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sysfs: add struct file* to bin_attr callbacks
[linux-2.6.git] / drivers / scsi / ipr.c
blob6a6661c35b2f9bb753f3de02e540a46678084c46
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/ioport.h>
64 #include <linux/delay.h>
65 #include <linux/pci.h>
66 #include <linux/wait.h>
67 #include <linux/spinlock.h>
68 #include <linux/sched.h>
69 #include <linux/interrupt.h>
70 #include <linux/blkdev.h>
71 #include <linux/firmware.h>
72 #include <linux/module.h>
73 #include <linux/moduleparam.h>
74 #include <linux/libata.h>
75 #include <linux/hdreg.h>
76 #include <linux/reboot.h>
77 #include <linux/stringify.h>
78 #include <asm/io.h>
79 #include <asm/irq.h>
80 #include <asm/processor.h>
81 #include <scsi/scsi.h>
82 #include <scsi/scsi_host.h>
83 #include <scsi/scsi_tcq.h>
84 #include <scsi/scsi_eh.h>
85 #include <scsi/scsi_cmnd.h>
86 #include "ipr.h"
87
88 /*
89 * Global Data
90 */
91 static LIST_HEAD(ipr_ioa_head);
92 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
93 static unsigned int ipr_max_speed = 1;
94 static int ipr_testmode = 0;
95 static unsigned int ipr_fastfail = 0;
96 static unsigned int ipr_transop_timeout = 0;
97 static unsigned int ipr_debug = 0;
98 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
99 static unsigned int ipr_dual_ioa_raid = 1;
100 static DEFINE_SPINLOCK(ipr_driver_lock);
101
102 /* This table describes the differences between DMA controller chips */
103 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
104 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
105 .mailbox = 0x0042C,
106 .cache_line_size = 0x20,
107 {
108 .set_interrupt_mask_reg = 0x0022C,
109 .clr_interrupt_mask_reg = 0x00230,
110 .clr_interrupt_mask_reg32 = 0x00230,
111 .sense_interrupt_mask_reg = 0x0022C,
112 .sense_interrupt_mask_reg32 = 0x0022C,
113 .clr_interrupt_reg = 0x00228,
114 .clr_interrupt_reg32 = 0x00228,
115 .sense_interrupt_reg = 0x00224,
116 .sense_interrupt_reg32 = 0x00224,
117 .ioarrin_reg = 0x00404,
118 .sense_uproc_interrupt_reg = 0x00214,
119 .sense_uproc_interrupt_reg32 = 0x00214,
120 .set_uproc_interrupt_reg = 0x00214,
121 .set_uproc_interrupt_reg32 = 0x00214,
122 .clr_uproc_interrupt_reg = 0x00218,
123 .clr_uproc_interrupt_reg32 = 0x00218
124 }
125 },
126 { /* Snipe and Scamp */
127 .mailbox = 0x0052C,
128 .cache_line_size = 0x20,
129 {
130 .set_interrupt_mask_reg = 0x00288,
131 .clr_interrupt_mask_reg = 0x0028C,
132 .clr_interrupt_mask_reg32 = 0x0028C,
133 .sense_interrupt_mask_reg = 0x00288,
134 .sense_interrupt_mask_reg32 = 0x00288,
135 .clr_interrupt_reg = 0x00284,
136 .clr_interrupt_reg32 = 0x00284,
137 .sense_interrupt_reg = 0x00280,
138 .sense_interrupt_reg32 = 0x00280,
139 .ioarrin_reg = 0x00504,
140 .sense_uproc_interrupt_reg = 0x00290,
141 .sense_uproc_interrupt_reg32 = 0x00290,
142 .set_uproc_interrupt_reg = 0x00290,
143 .set_uproc_interrupt_reg32 = 0x00290,
144 .clr_uproc_interrupt_reg = 0x00294,
145 .clr_uproc_interrupt_reg32 = 0x00294
146 }
147 },
148 { /* CRoC */
149 .mailbox = 0x00040,
150 .cache_line_size = 0x20,
151 {
152 .set_interrupt_mask_reg = 0x00010,
153 .clr_interrupt_mask_reg = 0x00018,
154 .clr_interrupt_mask_reg32 = 0x0001C,
155 .sense_interrupt_mask_reg = 0x00010,
156 .sense_interrupt_mask_reg32 = 0x00014,
157 .clr_interrupt_reg = 0x00008,
158 .clr_interrupt_reg32 = 0x0000C,
159 .sense_interrupt_reg = 0x00000,
160 .sense_interrupt_reg32 = 0x00004,
161 .ioarrin_reg = 0x00070,
162 .sense_uproc_interrupt_reg = 0x00020,
163 .sense_uproc_interrupt_reg32 = 0x00024,
164 .set_uproc_interrupt_reg = 0x00020,
165 .set_uproc_interrupt_reg32 = 0x00024,
166 .clr_uproc_interrupt_reg = 0x00028,
167 .clr_uproc_interrupt_reg32 = 0x0002C,
168 .init_feedback_reg = 0x0005C,
169 .dump_addr_reg = 0x00064,
170 .dump_data_reg = 0x00068
171 }
172 },
173 };
174
175 static const struct ipr_chip_t ipr_chip[] = {
176 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] },
177 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] },
178 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] },
179 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[0] },
180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, &ipr_chip_cfg[0] },
181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[1] },
182 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, &ipr_chip_cfg[1] },
183 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, &ipr_chip_cfg[2] },
184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, &ipr_chip_cfg[2] }
185 };
186
187 static int ipr_max_bus_speeds [] = {
188 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
189 };
190
191 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
192 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
193 module_param_named(max_speed, ipr_max_speed, uint, 0);
194 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
195 module_param_named(log_level, ipr_log_level, uint, 0);
196 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
197 module_param_named(testmode, ipr_testmode, int, 0);
198 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
199 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
200 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
201 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
202 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
203 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
204 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
205 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
206 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
207 module_param_named(max_devs, ipr_max_devs, int, 0);
208 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
209 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
210 MODULE_LICENSE("GPL");
211 MODULE_VERSION(IPR_DRIVER_VERSION);
212
213 /* A constant array of IOASCs/URCs/Error Messages */
214 static const
215 struct ipr_error_table_t ipr_error_table[] = {
216 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
217 "8155: An unknown error was received"},
218 {0x00330000, 0, 0,
219 "Soft underlength error"},
220 {0x005A0000, 0, 0,
221 "Command to be cancelled not found"},
222 {0x00808000, 0, 0,
223 "Qualified success"},
224 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
225 "FFFE: Soft device bus error recovered by the IOA"},
226 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
227 "4101: Soft device bus fabric error"},
228 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
229 "FFFC: Logical block guard error recovered by the device"},
230 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
231 "FFFC: Logical block reference tag error recovered by the device"},
232 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
233 "4171: Recovered scatter list tag / sequence number error"},
234 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
235 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
236 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
237 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
238 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
239 "FFFD: Recovered logical block reference tag error detected by the IOA"},
240 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
241 "FFFD: Logical block guard error recovered by the IOA"},
242 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
243 "FFF9: Device sector reassign successful"},
244 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
245 "FFF7: Media error recovered by device rewrite procedures"},
246 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
247 "7001: IOA sector reassignment successful"},
248 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
249 "FFF9: Soft media error. Sector reassignment recommended"},
250 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
251 "FFF7: Media error recovered by IOA rewrite procedures"},
252 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FF3D: Soft PCI bus error recovered by the IOA"},
254 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
255 "FFF6: Device hardware error recovered by the IOA"},
256 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
257 "FFF6: Device hardware error recovered by the device"},
258 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
259 "FF3D: Soft IOA error recovered by the IOA"},
260 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
261 "FFFA: Undefined device response recovered by the IOA"},
262 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
263 "FFF6: Device bus error, message or command phase"},
264 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
265 "FFFE: Task Management Function failed"},
266 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
267 "FFF6: Failure prediction threshold exceeded"},
268 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
269 "8009: Impending cache battery pack failure"},
270 {0x02040400, 0, 0,
271 "34FF: Disk device format in progress"},
272 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
273 "9070: IOA requested reset"},
274 {0x023F0000, 0, 0,
275 "Synchronization required"},
276 {0x024E0000, 0, 0,
277 "No ready, IOA shutdown"},
278 {0x025A0000, 0, 0,
279 "Not ready, IOA has been shutdown"},
280 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
281 "3020: Storage subsystem configuration error"},
282 {0x03110B00, 0, 0,
283 "FFF5: Medium error, data unreadable, recommend reassign"},
284 {0x03110C00, 0, 0,
285 "7000: Medium error, data unreadable, do not reassign"},
286 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
287 "FFF3: Disk media format bad"},
288 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
289 "3002: Addressed device failed to respond to selection"},
290 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
291 "3100: Device bus error"},
292 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
293 "3109: IOA timed out a device command"},
294 {0x04088000, 0, 0,
295 "3120: SCSI bus is not operational"},
296 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
297 "4100: Hard device bus fabric error"},
298 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
299 "310C: Logical block guard error detected by the device"},
300 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
301 "310C: Logical block reference tag error detected by the device"},
302 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
303 "4170: Scatter list tag / sequence number error"},
304 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
305 "8150: Logical block CRC error on IOA to Host transfer"},
306 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
307 "4170: Logical block sequence number error on IOA to Host transfer"},
308 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
309 "310D: Logical block reference tag error detected by the IOA"},
310 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
311 "310D: Logical block guard error detected by the IOA"},
312 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
313 "9000: IOA reserved area data check"},
314 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
315 "9001: IOA reserved area invalid data pattern"},
316 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
317 "9002: IOA reserved area LRC error"},
318 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
319 "Hardware Error, IOA metadata access error"},
320 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
321 "102E: Out of alternate sectors for disk storage"},
322 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
323 "FFF4: Data transfer underlength error"},
324 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
325 "FFF4: Data transfer overlength error"},
326 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
327 "3400: Logical unit failure"},
328 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
329 "FFF4: Device microcode is corrupt"},
330 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
331 "8150: PCI bus error"},
332 {0x04430000, 1, 0,
333 "Unsupported device bus message received"},
334 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
335 "FFF4: Disk device problem"},
336 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
337 "8150: Permanent IOA failure"},
338 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
339 "3010: Disk device returned wrong response to IOA"},
340 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
341 "8151: IOA microcode error"},
342 {0x04448500, 0, 0,
343 "Device bus status error"},
344 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
345 "8157: IOA error requiring IOA reset to recover"},
346 {0x04448700, 0, 0,
347 "ATA device status error"},
348 {0x04490000, 0, 0,
349 "Message reject received from the device"},
350 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
351 "8008: A permanent cache battery pack failure occurred"},
352 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
353 "9090: Disk unit has been modified after the last known status"},
354 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
355 "9081: IOA detected device error"},
356 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
357 "9082: IOA detected device error"},
358 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
359 "3110: Device bus error, message or command phase"},
360 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
361 "3110: SAS Command / Task Management Function failed"},
362 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
363 "9091: Incorrect hardware configuration change has been detected"},
364 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
365 "9073: Invalid multi-adapter configuration"},
366 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
367 "4010: Incorrect connection between cascaded expanders"},
368 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
369 "4020: Connections exceed IOA design limits"},
370 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
371 "4030: Incorrect multipath connection"},
372 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
373 "4110: Unsupported enclosure function"},
374 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
375 "FFF4: Command to logical unit failed"},
376 {0x05240000, 1, 0,
377 "Illegal request, invalid request type or request packet"},
378 {0x05250000, 0, 0,
379 "Illegal request, invalid resource handle"},
380 {0x05258000, 0, 0,
381 "Illegal request, commands not allowed to this device"},
382 {0x05258100, 0, 0,
383 "Illegal request, command not allowed to a secondary adapter"},
384 {0x05258200, 0, 0,
385 "Illegal request, command not allowed to a non-optimized resource"},
386 {0x05260000, 0, 0,
387 "Illegal request, invalid field in parameter list"},
388 {0x05260100, 0, 0,
389 "Illegal request, parameter not supported"},
390 {0x05260200, 0, 0,
391 "Illegal request, parameter value invalid"},
392 {0x052C0000, 0, 0,
393 "Illegal request, command sequence error"},
394 {0x052C8000, 1, 0,
395 "Illegal request, dual adapter support not enabled"},
396 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
397 "9031: Array protection temporarily suspended, protection resuming"},
398 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
399 "9040: Array protection temporarily suspended, protection resuming"},
400 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
401 "3140: Device bus not ready to ready transition"},
402 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
403 "FFFB: SCSI bus was reset"},
404 {0x06290500, 0, 0,
405 "FFFE: SCSI bus transition to single ended"},
406 {0x06290600, 0, 0,
407 "FFFE: SCSI bus transition to LVD"},
408 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
409 "FFFB: SCSI bus was reset by another initiator"},
410 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
411 "3029: A device replacement has occurred"},
412 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
413 "9051: IOA cache data exists for a missing or failed device"},
414 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
415 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
416 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
417 "9025: Disk unit is not supported at its physical location"},
418 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
419 "3020: IOA detected a SCSI bus configuration error"},
420 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
421 "3150: SCSI bus configuration error"},
422 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
423 "9074: Asymmetric advanced function disk configuration"},
424 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
425 "4040: Incomplete multipath connection between IOA and enclosure"},
426 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
427 "4041: Incomplete multipath connection between enclosure and device"},
428 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
429 "9075: Incomplete multipath connection between IOA and remote IOA"},
430 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
431 "9076: Configuration error, missing remote IOA"},
432 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
433 "4050: Enclosure does not support a required multipath function"},
434 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
435 "4070: Logically bad block written on device"},
436 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
437 "9041: Array protection temporarily suspended"},
438 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
439 "9042: Corrupt array parity detected on specified device"},
440 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
441 "9030: Array no longer protected due to missing or failed disk unit"},
442 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
443 "9071: Link operational transition"},
444 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
445 "9072: Link not operational transition"},
446 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
447 "9032: Array exposed but still protected"},
448 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
449 "70DD: Device forced failed by disrupt device command"},
450 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
451 "4061: Multipath redundancy level got better"},
452 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
453 "4060: Multipath redundancy level got worse"},
454 {0x07270000, 0, 0,
455 "Failure due to other device"},
456 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
457 "9008: IOA does not support functions expected by devices"},
458 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
459 "9010: Cache data associated with attached devices cannot be found"},
460 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
461 "9011: Cache data belongs to devices other than those attached"},
462 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
463 "9020: Array missing 2 or more devices with only 1 device present"},
464 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
465 "9021: Array missing 2 or more devices with 2 or more devices present"},
466 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
467 "9022: Exposed array is missing a required device"},
468 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
469 "9023: Array member(s) not at required physical locations"},
470 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
471 "9024: Array not functional due to present hardware configuration"},
472 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
473 "9026: Array not functional due to present hardware configuration"},
474 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
475 "9027: Array is missing a device and parity is out of sync"},
476 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
477 "9028: Maximum number of arrays already exist"},
478 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
479 "9050: Required cache data cannot be located for a disk unit"},
480 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
481 "9052: Cache data exists for a device that has been modified"},
482 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
483 "9054: IOA resources not available due to previous problems"},
484 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
485 "9092: Disk unit requires initialization before use"},
486 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
487 "9029: Incorrect hardware configuration change has been detected"},
488 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
489 "9060: One or more disk pairs are missing from an array"},
490 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
491 "9061: One or more disks are missing from an array"},
492 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
493 "9062: One or more disks are missing from an array"},
494 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
495 "9063: Maximum number of functional arrays has been exceeded"},
496 {0x0B260000, 0, 0,
497 "Aborted command, invalid descriptor"},
498 {0x0B5A0000, 0, 0,
499 "Command terminated by host"}
500 };
501
502 static const struct ipr_ses_table_entry ipr_ses_table[] = {
503 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
504 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
505 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
506 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
507 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
508 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
509 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
510 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
511 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
512 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
513 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
514 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
515 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
516 };
517
518 /*
519 * Function Prototypes
520 */
521 static int ipr_reset_alert(struct ipr_cmnd *);
522 static void ipr_process_ccn(struct ipr_cmnd *);
523 static void ipr_process_error(struct ipr_cmnd *);
524 static void ipr_reset_ioa_job(struct ipr_cmnd *);
525 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
526 enum ipr_shutdown_type);
527
528 #ifdef CONFIG_SCSI_IPR_TRACE
529 /**
530 * ipr_trc_hook - Add a trace entry to the driver trace
531 * @ipr_cmd: ipr command struct
532 * @type: trace type
533 * @add_data: additional data
534 *
535 * Return value:
536 * none
537 **/
538 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
539 u8 type, u32 add_data)
540 {
541 struct ipr_trace_entry *trace_entry;
542 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
543
544 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
545 trace_entry->time = jiffies;
546 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
547 trace_entry->type = type;
548 if (ipr_cmd->ioa_cfg->sis64)
549 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
550 else
551 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
552 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
553 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
554 trace_entry->u.add_data = add_data;
555 }
556 #else
557 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
558 #endif
559
560 /**
561 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
562 * @ipr_cmd: ipr command struct
563 *
564 * Return value:
565 * none
566 **/
567 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
568 {
569 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
570 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
571 dma_addr_t dma_addr = ipr_cmd->dma_addr;
572
573 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
574 ioarcb->data_transfer_length = 0;
575 ioarcb->read_data_transfer_length = 0;
576 ioarcb->ioadl_len = 0;
577 ioarcb->read_ioadl_len = 0;
578
579 if (ipr_cmd->ioa_cfg->sis64)
580 ioarcb->u.sis64_addr_data.data_ioadl_addr =
581 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
582 else {
583 ioarcb->write_ioadl_addr =
584 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
585 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
586 }
587
588 ioasa->ioasc = 0;
589 ioasa->residual_data_len = 0;
590 ioasa->u.gata.status = 0;
591
592 ipr_cmd->scsi_cmd = NULL;
593 ipr_cmd->qc = NULL;
594 ipr_cmd->sense_buffer[0] = 0;
595 ipr_cmd->dma_use_sg = 0;
596 }
597
598 /**
599 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
600 * @ipr_cmd: ipr command struct
601 *
602 * Return value:
603 * none
604 **/
605 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
606 {
607 ipr_reinit_ipr_cmnd(ipr_cmd);
608 ipr_cmd->u.scratch = 0;
609 ipr_cmd->sibling = NULL;
610 init_timer(&ipr_cmd->timer);
611 }
612
613 /**
614 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
615 * @ioa_cfg: ioa config struct
616 *
617 * Return value:
618 * pointer to ipr command struct
619 **/
620 static
621 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
622 {
623 struct ipr_cmnd *ipr_cmd;
624
625 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
626 list_del(&ipr_cmd->queue);
627 ipr_init_ipr_cmnd(ipr_cmd);
628
629 return ipr_cmd;
630 }
631
632 /**
633 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
634 * @ioa_cfg: ioa config struct
635 * @clr_ints: interrupts to clear
636 *
637 * This function masks all interrupts on the adapter, then clears the
638 * interrupts specified in the mask
639 *
640 * Return value:
641 * none
642 **/
643 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
644 u32 clr_ints)
645 {
646 volatile u32 int_reg;
647
648 /* Stop new interrupts */
649 ioa_cfg->allow_interrupts = 0;
650
651 /* Set interrupt mask to stop all new interrupts */
652 if (ioa_cfg->sis64)
653 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
654 else
655 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
656
657 /* Clear any pending interrupts */
658 if (ioa_cfg->sis64)
659 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
660 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
661 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
662 }
663
664 /**
665 * ipr_save_pcix_cmd_reg - Save PCI-X command register
666 * @ioa_cfg: ioa config struct
667 *
668 * Return value:
669 * 0 on success / -EIO on failure
670 **/
671 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
672 {
673 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
674
675 if (pcix_cmd_reg == 0)
676 return 0;
677
678 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
679 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
680 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
681 return -EIO;
682 }
683
684 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
685 return 0;
686 }
687
688 /**
689 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
690 * @ioa_cfg: ioa config struct
691 *
692 * Return value:
693 * 0 on success / -EIO on failure
694 **/
695 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
696 {
697 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
698
699 if (pcix_cmd_reg) {
700 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
701 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
702 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
703 return -EIO;
704 }
705 }
706
707 return 0;
708 }
709
710 /**
711 * ipr_sata_eh_done - done function for aborted SATA commands
712 * @ipr_cmd: ipr command struct
713 *
714 * This function is invoked for ops generated to SATA
715 * devices which are being aborted.
716 *
717 * Return value:
718 * none
719 **/
720 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
721 {
722 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
723 struct ata_queued_cmd *qc = ipr_cmd->qc;
724 struct ipr_sata_port *sata_port = qc->ap->private_data;
725
726 qc->err_mask |= AC_ERR_OTHER;
727 sata_port->ioasa.status |= ATA_BUSY;
728 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
729 ata_qc_complete(qc);
730 }
731
732 /**
733 * ipr_scsi_eh_done - mid-layer done function for aborted ops
734 * @ipr_cmd: ipr command struct
735 *
736 * This function is invoked by the interrupt handler for
737 * ops generated by the SCSI mid-layer which are being aborted.
738 *
739 * Return value:
740 * none
741 **/
742 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
743 {
744 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
745 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
746
747 scsi_cmd->result |= (DID_ERROR << 16);
748
749 scsi_dma_unmap(ipr_cmd->scsi_cmd);
750 scsi_cmd->scsi_done(scsi_cmd);
751 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
752 }
753
754 /**
755 * ipr_fail_all_ops - Fails all outstanding ops.
756 * @ioa_cfg: ioa config struct
757 *
758 * This function fails all outstanding ops.
759 *
760 * Return value:
761 * none
762 **/
763 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
764 {
765 struct ipr_cmnd *ipr_cmd, *temp;
766
767 ENTER;
768 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
769 list_del(&ipr_cmd->queue);
770
771 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
772 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
773
774 if (ipr_cmd->scsi_cmd)
775 ipr_cmd->done = ipr_scsi_eh_done;
776 else if (ipr_cmd->qc)
777 ipr_cmd->done = ipr_sata_eh_done;
778
779 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
780 del_timer(&ipr_cmd->timer);
781 ipr_cmd->done(ipr_cmd);
782 }
783
784 LEAVE;
785 }
786
787 /**
788 * ipr_send_command - Send driver initiated requests.
789 * @ipr_cmd: ipr command struct
790 *
791 * This function sends a command to the adapter using the correct write call.
792 * In the case of sis64, calculate the ioarcb size required. Then or in the
793 * appropriate bits.
794 *
795 * Return value:
796 * none
797 **/
798 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
799 {
800 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
801 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
802
803 if (ioa_cfg->sis64) {
804 /* The default size is 256 bytes */
805 send_dma_addr |= 0x1;
806
807 /* If the number of ioadls * size of ioadl > 128 bytes,
808 then use a 512 byte ioarcb */
809 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
810 send_dma_addr |= 0x4;
811 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
812 } else
813 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
814 }
815
816 /**
817 * ipr_do_req - Send driver initiated requests.
818 * @ipr_cmd: ipr command struct
819 * @done: done function
820 * @timeout_func: timeout function
821 * @timeout: timeout value
822 *
823 * This function sends the specified command to the adapter with the
824 * timeout given. The done function is invoked on command completion.
825 *
826 * Return value:
827 * none
828 **/
829 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
830 void (*done) (struct ipr_cmnd *),
831 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
832 {
833 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
834
835 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
836
837 ipr_cmd->done = done;
838
839 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
840 ipr_cmd->timer.expires = jiffies + timeout;
841 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
842
843 add_timer(&ipr_cmd->timer);
844
845 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
846
847 mb();
848
849 ipr_send_command(ipr_cmd);
850 }
851
852 /**
853 * ipr_internal_cmd_done - Op done function for an internally generated op.
854 * @ipr_cmd: ipr command struct
855 *
856 * This function is the op done function for an internally generated,
857 * blocking op. It simply wakes the sleeping thread.
858 *
859 * Return value:
860 * none
861 **/
862 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
863 {
864 if (ipr_cmd->sibling)
865 ipr_cmd->sibling = NULL;
866 else
867 complete(&ipr_cmd->completion);
868 }
869
870 /**
871 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
872 * @ipr_cmd: ipr command struct
873 * @dma_addr: dma address
874 * @len: transfer length
875 * @flags: ioadl flag value
876 *
877 * This function initializes an ioadl in the case where there is only a single
878 * descriptor.
879 *
880 * Return value:
881 * nothing
882 **/
883 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
884 u32 len, int flags)
885 {
886 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
887 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
888
889 ipr_cmd->dma_use_sg = 1;
890
891 if (ipr_cmd->ioa_cfg->sis64) {
892 ioadl64->flags = cpu_to_be32(flags);
893 ioadl64->data_len = cpu_to_be32(len);
894 ioadl64->address = cpu_to_be64(dma_addr);
895
896 ipr_cmd->ioarcb.ioadl_len =
897 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
898 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
899 } else {
900 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
901 ioadl->address = cpu_to_be32(dma_addr);
902
903 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
904 ipr_cmd->ioarcb.read_ioadl_len =
905 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
906 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
907 } else {
908 ipr_cmd->ioarcb.ioadl_len =
909 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
910 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
911 }
912 }
913 }
914
915 /**
916 * ipr_send_blocking_cmd - Send command and sleep on its completion.
917 * @ipr_cmd: ipr command struct
918 * @timeout_func: function to invoke if command times out
919 * @timeout: timeout
920 *
921 * Return value:
922 * none
923 **/
924 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
925 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
926 u32 timeout)
927 {
928 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
929
930 init_completion(&ipr_cmd->completion);
931 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
932
933 spin_unlock_irq(ioa_cfg->host->host_lock);
934 wait_for_completion(&ipr_cmd->completion);
935 spin_lock_irq(ioa_cfg->host->host_lock);
936 }
937
938 /**
939 * ipr_send_hcam - Send an HCAM to the adapter.
940 * @ioa_cfg: ioa config struct
941 * @type: HCAM type
942 * @hostrcb: hostrcb struct
943 *
944 * This function will send a Host Controlled Async command to the adapter.
945 * If HCAMs are currently not allowed to be issued to the adapter, it will
946 * place the hostrcb on the free queue.
947 *
948 * Return value:
949 * none
950 **/
951 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
952 struct ipr_hostrcb *hostrcb)
953 {
954 struct ipr_cmnd *ipr_cmd;
955 struct ipr_ioarcb *ioarcb;
956
957 if (ioa_cfg->allow_cmds) {
958 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
959 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
960 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
961
962 ipr_cmd->u.hostrcb = hostrcb;
963 ioarcb = &ipr_cmd->ioarcb;
964
965 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
966 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
967 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
968 ioarcb->cmd_pkt.cdb[1] = type;
969 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
970 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
971
972 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
973 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
974
975 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
976 ipr_cmd->done = ipr_process_ccn;
977 else
978 ipr_cmd->done = ipr_process_error;
979
980 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
981
982 mb();
983
984 ipr_send_command(ipr_cmd);
985 } else {
986 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
987 }
988 }
989
990 /**
991 * ipr_update_ata_class - Update the ata class in the resource entry
992 * @res: resource entry struct
993 * @proto: cfgte device bus protocol value
994 *
995 * Return value:
996 * none
997 **/
998 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
999 {
1000 switch(proto) {
1001 case IPR_PROTO_SATA:
1002 case IPR_PROTO_SAS_STP:
1003 res->ata_class = ATA_DEV_ATA;
1004 break;
1005 case IPR_PROTO_SATA_ATAPI:
1006 case IPR_PROTO_SAS_STP_ATAPI:
1007 res->ata_class = ATA_DEV_ATAPI;
1008 break;
1009 default:
1010 res->ata_class = ATA_DEV_UNKNOWN;
1011 break;
1012 };
1013 }
1014
1015 /**
1016 * ipr_init_res_entry - Initialize a resource entry struct.
1017 * @res: resource entry struct
1018 * @cfgtew: config table entry wrapper struct
1019 *
1020 * Return value:
1021 * none
1022 **/
1023 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1024 struct ipr_config_table_entry_wrapper *cfgtew)
1025 {
1026 int found = 0;
1027 unsigned int proto;
1028 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1029 struct ipr_resource_entry *gscsi_res = NULL;
1030
1031 res->needs_sync_complete = 0;
1032 res->in_erp = 0;
1033 res->add_to_ml = 0;
1034 res->del_from_ml = 0;
1035 res->resetting_device = 0;
1036 res->sdev = NULL;
1037 res->sata_port = NULL;
1038
1039 if (ioa_cfg->sis64) {
1040 proto = cfgtew->u.cfgte64->proto;
1041 res->res_flags = cfgtew->u.cfgte64->res_flags;
1042 res->qmodel = IPR_QUEUEING_MODEL64(res);
1043 res->type = cfgtew->u.cfgte64->res_type & 0x0f;
1044
1045 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1046 sizeof(res->res_path));
1047
1048 res->bus = 0;
1049 res->lun = scsilun_to_int(&res->dev_lun);
1050
1051 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1052 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1053 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1054 found = 1;
1055 res->target = gscsi_res->target;
1056 break;
1057 }
1058 }
1059 if (!found) {
1060 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1061 ioa_cfg->max_devs_supported);
1062 set_bit(res->target, ioa_cfg->target_ids);
1063 }
1064
1065 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1066 sizeof(res->dev_lun.scsi_lun));
1067 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1068 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1069 res->target = 0;
1070 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1071 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1072 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1073 ioa_cfg->max_devs_supported);
1074 set_bit(res->target, ioa_cfg->array_ids);
1075 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1076 res->bus = IPR_VSET_VIRTUAL_BUS;
1077 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1078 ioa_cfg->max_devs_supported);
1079 set_bit(res->target, ioa_cfg->vset_ids);
1080 } else {
1081 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1082 ioa_cfg->max_devs_supported);
1083 set_bit(res->target, ioa_cfg->target_ids);
1084 }
1085 } else {
1086 proto = cfgtew->u.cfgte->proto;
1087 res->qmodel = IPR_QUEUEING_MODEL(res);
1088 res->flags = cfgtew->u.cfgte->flags;
1089 if (res->flags & IPR_IS_IOA_RESOURCE)
1090 res->type = IPR_RES_TYPE_IOAFP;
1091 else
1092 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1093
1094 res->bus = cfgtew->u.cfgte->res_addr.bus;
1095 res->target = cfgtew->u.cfgte->res_addr.target;
1096 res->lun = cfgtew->u.cfgte->res_addr.lun;
1097 }
1098
1099 ipr_update_ata_class(res, proto);
1100 }
1101
1102 /**
1103 * ipr_is_same_device - Determine if two devices are the same.
1104 * @res: resource entry struct
1105 * @cfgtew: config table entry wrapper struct
1106 *
1107 * Return value:
1108 * 1 if the devices are the same / 0 otherwise
1109 **/
1110 static int ipr_is_same_device(struct ipr_resource_entry *res,
1111 struct ipr_config_table_entry_wrapper *cfgtew)
1112 {
1113 if (res->ioa_cfg->sis64) {
1114 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1115 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1116 !memcmp(&res->lun, &cfgtew->u.cfgte64->lun,
1117 sizeof(cfgtew->u.cfgte64->lun))) {
1118 return 1;
1119 }
1120 } else {
1121 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1122 res->target == cfgtew->u.cfgte->res_addr.target &&
1123 res->lun == cfgtew->u.cfgte->res_addr.lun)
1124 return 1;
1125 }
1126
1127 return 0;
1128 }
1129
1130 /**
1131 * ipr_format_resource_path - Format the resource path for printing.
1132 * @res_path: resource path
1133 * @buf: buffer
1134 *
1135 * Return value:
1136 * pointer to buffer
1137 **/
1138 static char *ipr_format_resource_path(u8 *res_path, char *buffer)
1139 {
1140 int i;
1141
1142 sprintf(buffer, "%02X", res_path[0]);
1143 for (i=1; res_path[i] != 0xff; i++)
1144 sprintf(buffer, "%s-%02X", buffer, res_path[i]);
1145
1146 return buffer;
1147 }
1148
1149 /**
1150 * ipr_update_res_entry - Update the resource entry.
1151 * @res: resource entry struct
1152 * @cfgtew: config table entry wrapper struct
1153 *
1154 * Return value:
1155 * none
1156 **/
1157 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1158 struct ipr_config_table_entry_wrapper *cfgtew)
1159 {
1160 char buffer[IPR_MAX_RES_PATH_LENGTH];
1161 unsigned int proto;
1162 int new_path = 0;
1163
1164 if (res->ioa_cfg->sis64) {
1165 res->flags = cfgtew->u.cfgte64->flags;
1166 res->res_flags = cfgtew->u.cfgte64->res_flags;
1167 res->type = cfgtew->u.cfgte64->res_type & 0x0f;
1168
1169 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1170 sizeof(struct ipr_std_inq_data));
1171
1172 res->qmodel = IPR_QUEUEING_MODEL64(res);
1173 proto = cfgtew->u.cfgte64->proto;
1174 res->res_handle = cfgtew->u.cfgte64->res_handle;
1175 res->dev_id = cfgtew->u.cfgte64->dev_id;
1176
1177 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1178 sizeof(res->dev_lun.scsi_lun));
1179
1180 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1181 sizeof(res->res_path))) {
1182 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1183 sizeof(res->res_path));
1184 new_path = 1;
1185 }
1186
1187 if (res->sdev && new_path)
1188 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1189 ipr_format_resource_path(&res->res_path[0], &buffer[0]));
1190 } else {
1191 res->flags = cfgtew->u.cfgte->flags;
1192 if (res->flags & IPR_IS_IOA_RESOURCE)
1193 res->type = IPR_RES_TYPE_IOAFP;
1194 else
1195 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1196
1197 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1198 sizeof(struct ipr_std_inq_data));
1199
1200 res->qmodel = IPR_QUEUEING_MODEL(res);
1201 proto = cfgtew->u.cfgte->proto;
1202 res->res_handle = cfgtew->u.cfgte->res_handle;
1203 }
1204
1205 ipr_update_ata_class(res, proto);
1206 }
1207
1208 /**
1209 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1210 * for the resource.
1211 * @res: resource entry struct
1212 * @cfgtew: config table entry wrapper struct
1213 *
1214 * Return value:
1215 * none
1216 **/
1217 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1218 {
1219 struct ipr_resource_entry *gscsi_res = NULL;
1220 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1221
1222 if (!ioa_cfg->sis64)
1223 return;
1224
1225 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1226 clear_bit(res->target, ioa_cfg->array_ids);
1227 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1228 clear_bit(res->target, ioa_cfg->vset_ids);
1229 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1230 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1231 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1232 return;
1233 clear_bit(res->target, ioa_cfg->target_ids);
1234
1235 } else if (res->bus == 0)
1236 clear_bit(res->target, ioa_cfg->target_ids);
1237 }
1238
1239 /**
1240 * ipr_handle_config_change - Handle a config change from the adapter
1241 * @ioa_cfg: ioa config struct
1242 * @hostrcb: hostrcb
1243 *
1244 * Return value:
1245 * none
1246 **/
1247 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1248 struct ipr_hostrcb *hostrcb)
1249 {
1250 struct ipr_resource_entry *res = NULL;
1251 struct ipr_config_table_entry_wrapper cfgtew;
1252 __be32 cc_res_handle;
1253
1254 u32 is_ndn = 1;
1255
1256 if (ioa_cfg->sis64) {
1257 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1258 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1259 } else {
1260 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1261 cc_res_handle = cfgtew.u.cfgte->res_handle;
1262 }
1263
1264 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1265 if (res->res_handle == cc_res_handle) {
1266 is_ndn = 0;
1267 break;
1268 }
1269 }
1270
1271 if (is_ndn) {
1272 if (list_empty(&ioa_cfg->free_res_q)) {
1273 ipr_send_hcam(ioa_cfg,
1274 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1275 hostrcb);
1276 return;
1277 }
1278
1279 res = list_entry(ioa_cfg->free_res_q.next,
1280 struct ipr_resource_entry, queue);
1281
1282 list_del(&res->queue);
1283 ipr_init_res_entry(res, &cfgtew);
1284 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1285 }
1286
1287 ipr_update_res_entry(res, &cfgtew);
1288
1289 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1290 if (res->sdev) {
1291 res->del_from_ml = 1;
1292 res->res_handle = IPR_INVALID_RES_HANDLE;
1293 if (ioa_cfg->allow_ml_add_del)
1294 schedule_work(&ioa_cfg->work_q);
1295 } else {
1296 ipr_clear_res_target(res);
1297 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1298 }
1299 } else if (!res->sdev) {
1300 res->add_to_ml = 1;
1301 if (ioa_cfg->allow_ml_add_del)
1302 schedule_work(&ioa_cfg->work_q);
1303 }
1304
1305 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1306 }
1307
1308 /**
1309 * ipr_process_ccn - Op done function for a CCN.
1310 * @ipr_cmd: ipr command struct
1311 *
1312 * This function is the op done function for a configuration
1313 * change notification host controlled async from the adapter.
1314 *
1315 * Return value:
1316 * none
1317 **/
1318 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1319 {
1320 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1321 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1322 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1323
1324 list_del(&hostrcb->queue);
1325 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1326
1327 if (ioasc) {
1328 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1329 dev_err(&ioa_cfg->pdev->dev,
1330 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1331
1332 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1333 } else {
1334 ipr_handle_config_change(ioa_cfg, hostrcb);
1335 }
1336 }
1337
1338 /**
1339 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1340 * @i: index into buffer
1341 * @buf: string to modify
1342 *
1343 * This function will strip all trailing whitespace, pad the end
1344 * of the string with a single space, and NULL terminate the string.
1345 *
1346 * Return value:
1347 * new length of string
1348 **/
1349 static int strip_and_pad_whitespace(int i, char *buf)
1350 {
1351 while (i && buf[i] == ' ')
1352 i--;
1353 buf[i+1] = ' ';
1354 buf[i+2] = '\0';
1355 return i + 2;
1356 }
1357
1358 /**
1359 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1360 * @prefix: string to print at start of printk
1361 * @hostrcb: hostrcb pointer
1362 * @vpd: vendor/product id/sn struct
1363 *
1364 * Return value:
1365 * none
1366 **/
1367 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1368 struct ipr_vpd *vpd)
1369 {
1370 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1371 int i = 0;
1372
1373 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1374 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1375
1376 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1377 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1378
1379 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1380 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1381
1382 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1383 }
1384
1385 /**
1386 * ipr_log_vpd - Log the passed VPD to the error log.
1387 * @vpd: vendor/product id/sn struct
1388 *
1389 * Return value:
1390 * none
1391 **/
1392 static void ipr_log_vpd(struct ipr_vpd *vpd)
1393 {
1394 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1395 + IPR_SERIAL_NUM_LEN];
1396
1397 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1398 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1399 IPR_PROD_ID_LEN);
1400 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1401 ipr_err("Vendor/Product ID: %s\n", buffer);
1402
1403 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1404 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1405 ipr_err(" Serial Number: %s\n", buffer);
1406 }
1407
1408 /**
1409 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1410 * @prefix: string to print at start of printk
1411 * @hostrcb: hostrcb pointer
1412 * @vpd: vendor/product id/sn/wwn struct
1413 *
1414 * Return value:
1415 * none
1416 **/
1417 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1418 struct ipr_ext_vpd *vpd)
1419 {
1420 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1421 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1422 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1423 }
1424
1425 /**
1426 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1427 * @vpd: vendor/product id/sn/wwn struct
1428 *
1429 * Return value:
1430 * none
1431 **/
1432 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1433 {
1434 ipr_log_vpd(&vpd->vpd);
1435 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1436 be32_to_cpu(vpd->wwid[1]));
1437 }
1438
1439 /**
1440 * ipr_log_enhanced_cache_error - Log a cache error.
1441 * @ioa_cfg: ioa config struct
1442 * @hostrcb: hostrcb struct
1443 *
1444 * Return value:
1445 * none
1446 **/
1447 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1448 struct ipr_hostrcb *hostrcb)
1449 {
1450 struct ipr_hostrcb_type_12_error *error;
1451
1452 if (ioa_cfg->sis64)
1453 error = &hostrcb->hcam.u.error64.u.type_12_error;
1454 else
1455 error = &hostrcb->hcam.u.error.u.type_12_error;
1456
1457 ipr_err("-----Current Configuration-----\n");
1458 ipr_err("Cache Directory Card Information:\n");
1459 ipr_log_ext_vpd(&error->ioa_vpd);
1460 ipr_err("Adapter Card Information:\n");
1461 ipr_log_ext_vpd(&error->cfc_vpd);
1462
1463 ipr_err("-----Expected Configuration-----\n");
1464 ipr_err("Cache Directory Card Information:\n");
1465 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1466 ipr_err("Adapter Card Information:\n");
1467 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1468
1469 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1470 be32_to_cpu(error->ioa_data[0]),
1471 be32_to_cpu(error->ioa_data[1]),
1472 be32_to_cpu(error->ioa_data[2]));
1473 }
1474
1475 /**
1476 * ipr_log_cache_error - Log a cache error.
1477 * @ioa_cfg: ioa config struct
1478 * @hostrcb: hostrcb struct
1479 *
1480 * Return value:
1481 * none
1482 **/
1483 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1484 struct ipr_hostrcb *hostrcb)
1485 {
1486 struct ipr_hostrcb_type_02_error *error =
1487 &hostrcb->hcam.u.error.u.type_02_error;
1488
1489 ipr_err("-----Current Configuration-----\n");
1490 ipr_err("Cache Directory Card Information:\n");
1491 ipr_log_vpd(&error->ioa_vpd);
1492 ipr_err("Adapter Card Information:\n");
1493 ipr_log_vpd(&error->cfc_vpd);
1494
1495 ipr_err("-----Expected Configuration-----\n");
1496 ipr_err("Cache Directory Card Information:\n");
1497 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1498 ipr_err("Adapter Card Information:\n");
1499 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1500
1501 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1502 be32_to_cpu(error->ioa_data[0]),
1503 be32_to_cpu(error->ioa_data[1]),
1504 be32_to_cpu(error->ioa_data[2]));
1505 }
1506
1507 /**
1508 * ipr_log_enhanced_config_error - Log a configuration error.
1509 * @ioa_cfg: ioa config struct
1510 * @hostrcb: hostrcb struct
1511 *
1512 * Return value:
1513 * none
1514 **/
1515 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1516 struct ipr_hostrcb *hostrcb)
1517 {
1518 int errors_logged, i;
1519 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1520 struct ipr_hostrcb_type_13_error *error;
1521
1522 error = &hostrcb->hcam.u.error.u.type_13_error;
1523 errors_logged = be32_to_cpu(error->errors_logged);
1524
1525 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1526 be32_to_cpu(error->errors_detected), errors_logged);
1527
1528 dev_entry = error->dev;
1529
1530 for (i = 0; i < errors_logged; i++, dev_entry++) {
1531 ipr_err_separator;
1532
1533 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1534 ipr_log_ext_vpd(&dev_entry->vpd);
1535
1536 ipr_err("-----New Device Information-----\n");
1537 ipr_log_ext_vpd(&dev_entry->new_vpd);
1538
1539 ipr_err("Cache Directory Card Information:\n");
1540 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1541
1542 ipr_err("Adapter Card Information:\n");
1543 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1544 }
1545 }
1546
1547 /**
1548 * ipr_log_sis64_config_error - Log a device error.
1549 * @ioa_cfg: ioa config struct
1550 * @hostrcb: hostrcb struct
1551 *
1552 * Return value:
1553 * none
1554 **/
1555 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1556 struct ipr_hostrcb *hostrcb)
1557 {
1558 int errors_logged, i;
1559 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1560 struct ipr_hostrcb_type_23_error *error;
1561 char buffer[IPR_MAX_RES_PATH_LENGTH];
1562
1563 error = &hostrcb->hcam.u.error64.u.type_23_error;
1564 errors_logged = be32_to_cpu(error->errors_logged);
1565
1566 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1567 be32_to_cpu(error->errors_detected), errors_logged);
1568
1569 dev_entry = error->dev;
1570
1571 for (i = 0; i < errors_logged; i++, dev_entry++) {
1572 ipr_err_separator;
1573
1574 ipr_err("Device %d : %s", i + 1,
1575 ipr_format_resource_path(&dev_entry->res_path[0], &buffer[0]));
1576 ipr_log_ext_vpd(&dev_entry->vpd);
1577
1578 ipr_err("-----New Device Information-----\n");
1579 ipr_log_ext_vpd(&dev_entry->new_vpd);
1580
1581 ipr_err("Cache Directory Card Information:\n");
1582 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1583
1584 ipr_err("Adapter Card Information:\n");
1585 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1586 }
1587 }
1588
1589 /**
1590 * ipr_log_config_error - Log a configuration error.
1591 * @ioa_cfg: ioa config struct
1592 * @hostrcb: hostrcb struct
1593 *
1594 * Return value:
1595 * none
1596 **/
1597 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1598 struct ipr_hostrcb *hostrcb)
1599 {
1600 int errors_logged, i;
1601 struct ipr_hostrcb_device_data_entry *dev_entry;
1602 struct ipr_hostrcb_type_03_error *error;
1603
1604 error = &hostrcb->hcam.u.error.u.type_03_error;
1605 errors_logged = be32_to_cpu(error->errors_logged);
1606
1607 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1608 be32_to_cpu(error->errors_detected), errors_logged);
1609
1610 dev_entry = error->dev;
1611
1612 for (i = 0; i < errors_logged; i++, dev_entry++) {
1613 ipr_err_separator;
1614
1615 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1616 ipr_log_vpd(&dev_entry->vpd);
1617
1618 ipr_err("-----New Device Information-----\n");
1619 ipr_log_vpd(&dev_entry->new_vpd);
1620
1621 ipr_err("Cache Directory Card Information:\n");
1622 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1623
1624 ipr_err("Adapter Card Information:\n");
1625 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1626
1627 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1628 be32_to_cpu(dev_entry->ioa_data[0]),
1629 be32_to_cpu(dev_entry->ioa_data[1]),
1630 be32_to_cpu(dev_entry->ioa_data[2]),
1631 be32_to_cpu(dev_entry->ioa_data[3]),
1632 be32_to_cpu(dev_entry->ioa_data[4]));
1633 }
1634 }
1635
1636 /**
1637 * ipr_log_enhanced_array_error - Log an array configuration error.
1638 * @ioa_cfg: ioa config struct
1639 * @hostrcb: hostrcb struct
1640 *
1641 * Return value:
1642 * none
1643 **/
1644 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1645 struct ipr_hostrcb *hostrcb)
1646 {
1647 int i, num_entries;
1648 struct ipr_hostrcb_type_14_error *error;
1649 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1650 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1651
1652 error = &hostrcb->hcam.u.error.u.type_14_error;
1653
1654 ipr_err_separator;
1655
1656 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1657 error->protection_level,
1658 ioa_cfg->host->host_no,
1659 error->last_func_vset_res_addr.bus,
1660 error->last_func_vset_res_addr.target,
1661 error->last_func_vset_res_addr.lun);
1662
1663 ipr_err_separator;
1664
1665 array_entry = error->array_member;
1666 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1667 sizeof(error->array_member));
1668
1669 for (i = 0; i < num_entries; i++, array_entry++) {
1670 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1671 continue;
1672
1673 if (be32_to_cpu(error->exposed_mode_adn) == i)
1674 ipr_err("Exposed Array Member %d:\n", i);
1675 else
1676 ipr_err("Array Member %d:\n", i);
1677
1678 ipr_log_ext_vpd(&array_entry->vpd);
1679 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1680 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1681 "Expected Location");
1682
1683 ipr_err_separator;
1684 }
1685 }
1686
1687 /**
1688 * ipr_log_array_error - Log an array configuration error.
1689 * @ioa_cfg: ioa config struct
1690 * @hostrcb: hostrcb struct
1691 *
1692 * Return value:
1693 * none
1694 **/
1695 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1696 struct ipr_hostrcb *hostrcb)
1697 {
1698 int i;
1699 struct ipr_hostrcb_type_04_error *error;
1700 struct ipr_hostrcb_array_data_entry *array_entry;
1701 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1702
1703 error = &hostrcb->hcam.u.error.u.type_04_error;
1704
1705 ipr_err_separator;
1706
1707 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1708 error->protection_level,
1709 ioa_cfg->host->host_no,
1710 error->last_func_vset_res_addr.bus,
1711 error->last_func_vset_res_addr.target,
1712 error->last_func_vset_res_addr.lun);
1713
1714 ipr_err_separator;
1715
1716 array_entry = error->array_member;
1717
1718 for (i = 0; i < 18; i++) {
1719 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1720 continue;
1721
1722 if (be32_to_cpu(error->exposed_mode_adn) == i)
1723 ipr_err("Exposed Array Member %d:\n", i);
1724 else
1725 ipr_err("Array Member %d:\n", i);
1726
1727 ipr_log_vpd(&array_entry->vpd);
1728
1729 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1730 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1731 "Expected Location");
1732
1733 ipr_err_separator;
1734
1735 if (i == 9)
1736 array_entry = error->array_member2;
1737 else
1738 array_entry++;
1739 }
1740 }
1741
1742 /**
1743 * ipr_log_hex_data - Log additional hex IOA error data.
1744 * @ioa_cfg: ioa config struct
1745 * @data: IOA error data
1746 * @len: data length
1747 *
1748 * Return value:
1749 * none
1750 **/
1751 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1752 {
1753 int i;
1754
1755 if (len == 0)
1756 return;
1757
1758 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1759 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1760
1761 for (i = 0; i < len / 4; i += 4) {
1762 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1763 be32_to_cpu(data[i]),
1764 be32_to_cpu(data[i+1]),
1765 be32_to_cpu(data[i+2]),
1766 be32_to_cpu(data[i+3]));
1767 }
1768 }
1769
1770 /**
1771 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1772 * @ioa_cfg: ioa config struct
1773 * @hostrcb: hostrcb struct
1774 *
1775 * Return value:
1776 * none
1777 **/
1778 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1779 struct ipr_hostrcb *hostrcb)
1780 {
1781 struct ipr_hostrcb_type_17_error *error;
1782
1783 if (ioa_cfg->sis64)
1784 error = &hostrcb->hcam.u.error64.u.type_17_error;
1785 else
1786 error = &hostrcb->hcam.u.error.u.type_17_error;
1787
1788 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1789 strim(error->failure_reason);
1790
1791 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1792 be32_to_cpu(hostrcb->hcam.u.error.prc));
1793 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1794 ipr_log_hex_data(ioa_cfg, error->data,
1795 be32_to_cpu(hostrcb->hcam.length) -
1796 (offsetof(struct ipr_hostrcb_error, u) +
1797 offsetof(struct ipr_hostrcb_type_17_error, data)));
1798 }
1799
1800 /**
1801 * ipr_log_dual_ioa_error - Log a dual adapter error.
1802 * @ioa_cfg: ioa config struct
1803 * @hostrcb: hostrcb struct
1804 *
1805 * Return value:
1806 * none
1807 **/
1808 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1809 struct ipr_hostrcb *hostrcb)
1810 {
1811 struct ipr_hostrcb_type_07_error *error;
1812
1813 error = &hostrcb->hcam.u.error.u.type_07_error;
1814 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1815 strim(error->failure_reason);
1816
1817 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1818 be32_to_cpu(hostrcb->hcam.u.error.prc));
1819 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1820 ipr_log_hex_data(ioa_cfg, error->data,
1821 be32_to_cpu(hostrcb->hcam.length) -
1822 (offsetof(struct ipr_hostrcb_error, u) +
1823 offsetof(struct ipr_hostrcb_type_07_error, data)));
1824 }
1825
1826 static const struct {
1827 u8 active;
1828 char *desc;
1829 } path_active_desc[] = {
1830 { IPR_PATH_NO_INFO, "Path" },
1831 { IPR_PATH_ACTIVE, "Active path" },
1832 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1833 };
1834
1835 static const struct {
1836 u8 state;
1837 char *desc;
1838 } path_state_desc[] = {
1839 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1840 { IPR_PATH_HEALTHY, "is healthy" },
1841 { IPR_PATH_DEGRADED, "is degraded" },
1842 { IPR_PATH_FAILED, "is failed" }
1843 };
1844
1845 /**
1846 * ipr_log_fabric_path - Log a fabric path error
1847 * @hostrcb: hostrcb struct
1848 * @fabric: fabric descriptor
1849 *
1850 * Return value:
1851 * none
1852 **/
1853 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1854 struct ipr_hostrcb_fabric_desc *fabric)
1855 {
1856 int i, j;
1857 u8 path_state = fabric->path_state;
1858 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1859 u8 state = path_state & IPR_PATH_STATE_MASK;
1860
1861 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1862 if (path_active_desc[i].active != active)
1863 continue;
1864
1865 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1866 if (path_state_desc[j].state != state)
1867 continue;
1868
1869 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1870 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1871 path_active_desc[i].desc, path_state_desc[j].desc,
1872 fabric->ioa_port);
1873 } else if (fabric->cascaded_expander == 0xff) {
1874 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1875 path_active_desc[i].desc, path_state_desc[j].desc,
1876 fabric->ioa_port, fabric->phy);
1877 } else if (fabric->phy == 0xff) {
1878 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1879 path_active_desc[i].desc, path_state_desc[j].desc,
1880 fabric->ioa_port, fabric->cascaded_expander);
1881 } else {
1882 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1883 path_active_desc[i].desc, path_state_desc[j].desc,
1884 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1885 }
1886 return;
1887 }
1888 }
1889
1890 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1891 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1892 }
1893
1894 /**
1895 * ipr_log64_fabric_path - Log a fabric path error
1896 * @hostrcb: hostrcb struct
1897 * @fabric: fabric descriptor
1898 *
1899 * Return value:
1900 * none
1901 **/
1902 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1903 struct ipr_hostrcb64_fabric_desc *fabric)
1904 {
1905 int i, j;
1906 u8 path_state = fabric->path_state;
1907 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1908 u8 state = path_state & IPR_PATH_STATE_MASK;
1909 char buffer[IPR_MAX_RES_PATH_LENGTH];
1910
1911 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1912 if (path_active_desc[i].active != active)
1913 continue;
1914
1915 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1916 if (path_state_desc[j].state != state)
1917 continue;
1918
1919 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
1920 path_active_desc[i].desc, path_state_desc[j].desc,
1921 ipr_format_resource_path(&fabric->res_path[0], &buffer[0]));
1922 return;
1923 }
1924 }
1925
1926 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
1927 ipr_format_resource_path(&fabric->res_path[0], &buffer[0]));
1928 }
1929
1930 static const struct {
1931 u8 type;
1932 char *desc;
1933 } path_type_desc[] = {
1934 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1935 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1936 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1937 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1938 };
1939
1940 static const struct {
1941 u8 status;
1942 char *desc;
1943 } path_status_desc[] = {
1944 { IPR_PATH_CFG_NO_PROB, "Functional" },
1945 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1946 { IPR_PATH_CFG_FAILED, "Failed" },
1947 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1948 { IPR_PATH_NOT_DETECTED, "Missing" },
1949 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1950 };
1951
1952 static const char *link_rate[] = {
1953 "unknown",
1954 "disabled",
1955 "phy reset problem",
1956 "spinup hold",
1957 "port selector",
1958 "unknown",
1959 "unknown",
1960 "unknown",
1961 "1.5Gbps",
1962 "3.0Gbps",
1963 "unknown",
1964 "unknown",
1965 "unknown",
1966 "unknown",
1967 "unknown",
1968 "unknown"
1969 };
1970
1971 /**
1972 * ipr_log_path_elem - Log a fabric path element.
1973 * @hostrcb: hostrcb struct
1974 * @cfg: fabric path element struct
1975 *
1976 * Return value:
1977 * none
1978 **/
1979 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1980 struct ipr_hostrcb_config_element *cfg)
1981 {
1982 int i, j;
1983 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1984 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1985
1986 if (type == IPR_PATH_CFG_NOT_EXIST)
1987 return;
1988
1989 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1990 if (path_type_desc[i].type != type)
1991 continue;
1992
1993 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1994 if (path_status_desc[j].status != status)
1995 continue;
1996
1997 if (type == IPR_PATH_CFG_IOA_PORT) {
1998 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1999 path_status_desc[j].desc, path_type_desc[i].desc,
2000 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2001 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2002 } else {
2003 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2004 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2005 path_status_desc[j].desc, path_type_desc[i].desc,
2006 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2007 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2008 } else if (cfg->cascaded_expander == 0xff) {
2009 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2010 "WWN=%08X%08X\n", path_status_desc[j].desc,
2011 path_type_desc[i].desc, cfg->phy,
2012 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2013 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2014 } else if (cfg->phy == 0xff) {
2015 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2016 "WWN=%08X%08X\n", path_status_desc[j].desc,
2017 path_type_desc[i].desc, cfg->cascaded_expander,
2018 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2019 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2020 } else {
2021 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2022 "WWN=%08X%08X\n", path_status_desc[j].desc,
2023 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2024 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2025 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2026 }
2027 }
2028 return;
2029 }
2030 }
2031
2032 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2033 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2034 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2035 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2036 }
2037
2038 /**
2039 * ipr_log64_path_elem - Log a fabric path element.
2040 * @hostrcb: hostrcb struct
2041 * @cfg: fabric path element struct
2042 *
2043 * Return value:
2044 * none
2045 **/
2046 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2047 struct ipr_hostrcb64_config_element *cfg)
2048 {
2049 int i, j;
2050 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2051 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2052 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2053 char buffer[IPR_MAX_RES_PATH_LENGTH];
2054
2055 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2056 return;
2057
2058 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2059 if (path_type_desc[i].type != type)
2060 continue;
2061
2062 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2063 if (path_status_desc[j].status != status)
2064 continue;
2065
2066 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2067 path_status_desc[j].desc, path_type_desc[i].desc,
2068 ipr_format_resource_path(&cfg->res_path[0], &buffer[0]),
2069 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2070 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2071 return;
2072 }
2073 }
2074 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2075 "WWN=%08X%08X\n", cfg->type_status,
2076 ipr_format_resource_path(&cfg->res_path[0], &buffer[0]),
2077 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2078 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2079 }
2080
2081 /**
2082 * ipr_log_fabric_error - Log a fabric error.
2083 * @ioa_cfg: ioa config struct
2084 * @hostrcb: hostrcb struct
2085 *
2086 * Return value:
2087 * none
2088 **/
2089 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2090 struct ipr_hostrcb *hostrcb)
2091 {
2092 struct ipr_hostrcb_type_20_error *error;
2093 struct ipr_hostrcb_fabric_desc *fabric;
2094 struct ipr_hostrcb_config_element *cfg;
2095 int i, add_len;
2096
2097 error = &hostrcb->hcam.u.error.u.type_20_error;
2098 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2099 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2100
2101 add_len = be32_to_cpu(hostrcb->hcam.length) -
2102 (offsetof(struct ipr_hostrcb_error, u) +
2103 offsetof(struct ipr_hostrcb_type_20_error, desc));
2104
2105 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2106 ipr_log_fabric_path(hostrcb, fabric);
2107 for_each_fabric_cfg(fabric, cfg)
2108 ipr_log_path_elem(hostrcb, cfg);
2109
2110 add_len -= be16_to_cpu(fabric->length);
2111 fabric = (struct ipr_hostrcb_fabric_desc *)
2112 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2113 }
2114
2115 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2116 }
2117
2118 /**
2119 * ipr_log_sis64_array_error - Log a sis64 array error.
2120 * @ioa_cfg: ioa config struct
2121 * @hostrcb: hostrcb struct
2122 *
2123 * Return value:
2124 * none
2125 **/
2126 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2127 struct ipr_hostrcb *hostrcb)
2128 {
2129 int i, num_entries;
2130 struct ipr_hostrcb_type_24_error *error;
2131 struct ipr_hostrcb64_array_data_entry *array_entry;
2132 char buffer[IPR_MAX_RES_PATH_LENGTH];
2133 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2134
2135 error = &hostrcb->hcam.u.error64.u.type_24_error;
2136
2137 ipr_err_separator;
2138
2139 ipr_err("RAID %s Array Configuration: %s\n",
2140 error->protection_level,
2141 ipr_format_resource_path(&error->last_res_path[0], &buffer[0]));
2142
2143 ipr_err_separator;
2144
2145 array_entry = error->array_member;
2146 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
2147 sizeof(error->array_member));
2148
2149 for (i = 0; i < num_entries; i++, array_entry++) {
2150
2151 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2152 continue;
2153
2154 if (error->exposed_mode_adn == i)
2155 ipr_err("Exposed Array Member %d:\n", i);
2156 else
2157 ipr_err("Array Member %d:\n", i);
2158
2159 ipr_err("Array Member %d:\n", i);
2160 ipr_log_ext_vpd(&array_entry->vpd);
2161 ipr_err("Current Location: %s",
2162 ipr_format_resource_path(&array_entry->res_path[0], &buffer[0]));
2163 ipr_err("Expected Location: %s",
2164 ipr_format_resource_path(&array_entry->expected_res_path[0], &buffer[0]));
2165
2166 ipr_err_separator;
2167 }
2168 }
2169
2170 /**
2171 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2172 * @ioa_cfg: ioa config struct
2173 * @hostrcb: hostrcb struct
2174 *
2175 * Return value:
2176 * none
2177 **/
2178 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2179 struct ipr_hostrcb *hostrcb)
2180 {
2181 struct ipr_hostrcb_type_30_error *error;
2182 struct ipr_hostrcb64_fabric_desc *fabric;
2183 struct ipr_hostrcb64_config_element *cfg;
2184 int i, add_len;
2185
2186 error = &hostrcb->hcam.u.error64.u.type_30_error;
2187
2188 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2189 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2190
2191 add_len = be32_to_cpu(hostrcb->hcam.length) -
2192 (offsetof(struct ipr_hostrcb64_error, u) +
2193 offsetof(struct ipr_hostrcb_type_30_error, desc));
2194
2195 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2196 ipr_log64_fabric_path(hostrcb, fabric);
2197 for_each_fabric_cfg(fabric, cfg)
2198 ipr_log64_path_elem(hostrcb, cfg);
2199
2200 add_len -= be16_to_cpu(fabric->length);
2201 fabric = (struct ipr_hostrcb64_fabric_desc *)
2202 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2203 }
2204
2205 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2206 }
2207
2208 /**
2209 * ipr_log_generic_error - Log an adapter error.
2210 * @ioa_cfg: ioa config struct
2211 * @hostrcb: hostrcb struct
2212 *
2213 * Return value:
2214 * none
2215 **/
2216 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2217 struct ipr_hostrcb *hostrcb)
2218 {
2219 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2220 be32_to_cpu(hostrcb->hcam.length));
2221 }
2222
2223 /**
2224 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2225 * @ioasc: IOASC
2226 *
2227 * This function will return the index of into the ipr_error_table
2228 * for the specified IOASC. If the IOASC is not in the table,
2229 * 0 will be returned, which points to the entry used for unknown errors.
2230 *
2231 * Return value:
2232 * index into the ipr_error_table
2233 **/
2234 static u32 ipr_get_error(u32 ioasc)
2235 {
2236 int i;
2237
2238 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2239 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2240 return i;
2241
2242 return 0;
2243 }
2244
2245 /**
2246 * ipr_handle_log_data - Log an adapter error.
2247 * @ioa_cfg: ioa config struct
2248 * @hostrcb: hostrcb struct
2249 *
2250 * This function logs an adapter error to the system.
2251 *
2252 * Return value:
2253 * none
2254 **/
2255 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2256 struct ipr_hostrcb *hostrcb)
2257 {
2258 u32 ioasc;
2259 int error_index;
2260
2261 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2262 return;
2263
2264 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2265 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2266
2267 if (ioa_cfg->sis64)
2268 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2269 else
2270 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2271
2272 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2273 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2274 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2275 scsi_report_bus_reset(ioa_cfg->host,
2276 hostrcb->hcam.u.error.fd_res_addr.bus);
2277 }
2278
2279 error_index = ipr_get_error(ioasc);
2280
2281 if (!ipr_error_table[error_index].log_hcam)
2282 return;
2283
2284 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2285
2286 /* Set indication we have logged an error */
2287 ioa_cfg->errors_logged++;
2288
2289 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2290 return;
2291 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2292 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2293
2294 switch (hostrcb->hcam.overlay_id) {
2295 case IPR_HOST_RCB_OVERLAY_ID_2:
2296 ipr_log_cache_error(ioa_cfg, hostrcb);
2297 break;
2298 case IPR_HOST_RCB_OVERLAY_ID_3:
2299 ipr_log_config_error(ioa_cfg, hostrcb);
2300 break;
2301 case IPR_HOST_RCB_OVERLAY_ID_4:
2302 case IPR_HOST_RCB_OVERLAY_ID_6:
2303 ipr_log_array_error(ioa_cfg, hostrcb);
2304 break;
2305 case IPR_HOST_RCB_OVERLAY_ID_7:
2306 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2307 break;
2308 case IPR_HOST_RCB_OVERLAY_ID_12:
2309 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2310 break;
2311 case IPR_HOST_RCB_OVERLAY_ID_13:
2312 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2313 break;
2314 case IPR_HOST_RCB_OVERLAY_ID_14:
2315 case IPR_HOST_RCB_OVERLAY_ID_16:
2316 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2317 break;
2318 case IPR_HOST_RCB_OVERLAY_ID_17:
2319 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2320 break;
2321 case IPR_HOST_RCB_OVERLAY_ID_20:
2322 ipr_log_fabric_error(ioa_cfg, hostrcb);
2323 break;
2324 case IPR_HOST_RCB_OVERLAY_ID_23:
2325 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2326 break;
2327 case IPR_HOST_RCB_OVERLAY_ID_24:
2328 case IPR_HOST_RCB_OVERLAY_ID_26:
2329 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2330 break;
2331 case IPR_HOST_RCB_OVERLAY_ID_30:
2332 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2333 break;
2334 case IPR_HOST_RCB_OVERLAY_ID_1:
2335 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2336 default:
2337 ipr_log_generic_error(ioa_cfg, hostrcb);
2338 break;
2339 }
2340 }
2341
2342 /**
2343 * ipr_process_error - Op done function for an adapter error log.
2344 * @ipr_cmd: ipr command struct
2345 *
2346 * This function is the op done function for an error log host
2347 * controlled async from the adapter. It will log the error and
2348 * send the HCAM back to the adapter.
2349 *
2350 * Return value:
2351 * none
2352 **/
2353 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2354 {
2355 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2356 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2357 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
2358 u32 fd_ioasc;
2359
2360 if (ioa_cfg->sis64)
2361 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2362 else
2363 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2364
2365 list_del(&hostrcb->queue);
2366 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2367
2368 if (!ioasc) {
2369 ipr_handle_log_data(ioa_cfg, hostrcb);
2370 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2371 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2372 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2373 dev_err(&ioa_cfg->pdev->dev,
2374 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2375 }
2376
2377 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2378 }
2379
2380 /**
2381 * ipr_timeout - An internally generated op has timed out.
2382 * @ipr_cmd: ipr command struct
2383 *
2384 * This function blocks host requests and initiates an
2385 * adapter reset.
2386 *
2387 * Return value:
2388 * none
2389 **/
2390 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2391 {
2392 unsigned long lock_flags = 0;
2393 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2394
2395 ENTER;
2396 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2397
2398 ioa_cfg->errors_logged++;
2399 dev_err(&ioa_cfg->pdev->dev,
2400 "Adapter being reset due to command timeout.\n");
2401
2402 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2403 ioa_cfg->sdt_state = GET_DUMP;
2404
2405 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2406 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2407
2408 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2409 LEAVE;
2410 }
2411
2412 /**
2413 * ipr_oper_timeout - Adapter timed out transitioning to operational
2414 * @ipr_cmd: ipr command struct
2415 *
2416 * This function blocks host requests and initiates an
2417 * adapter reset.
2418 *
2419 * Return value:
2420 * none
2421 **/
2422 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2423 {
2424 unsigned long lock_flags = 0;
2425 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2426
2427 ENTER;
2428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2429
2430 ioa_cfg->errors_logged++;
2431 dev_err(&ioa_cfg->pdev->dev,
2432 "Adapter timed out transitioning to operational.\n");
2433
2434 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2435 ioa_cfg->sdt_state = GET_DUMP;
2436
2437 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2438 if (ipr_fastfail)
2439 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2440 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2441 }
2442
2443 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2444 LEAVE;
2445 }
2446
2447 /**
2448 * ipr_reset_reload - Reset/Reload the IOA
2449 * @ioa_cfg: ioa config struct
2450 * @shutdown_type: shutdown type
2451 *
2452 * This function resets the adapter and re-initializes it.
2453 * This function assumes that all new host commands have been stopped.
2454 * Return value:
2455 * SUCCESS / FAILED
2456 **/
2457 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
2458 enum ipr_shutdown_type shutdown_type)
2459 {
2460 if (!ioa_cfg->in_reset_reload)
2461 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
2462
2463 spin_unlock_irq(ioa_cfg->host->host_lock);
2464 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2465 spin_lock_irq(ioa_cfg->host->host_lock);
2466
2467 /* If we got hit with a host reset while we were already resetting
2468 the adapter for some reason, and the reset failed. */
2469 if (ioa_cfg->ioa_is_dead) {
2470 ipr_trace;
2471 return FAILED;
2472 }
2473
2474 return SUCCESS;
2475 }
2476
2477 /**
2478 * ipr_find_ses_entry - Find matching SES in SES table
2479 * @res: resource entry struct of SES
2480 *
2481 * Return value:
2482 * pointer to SES table entry / NULL on failure
2483 **/
2484 static const struct ipr_ses_table_entry *
2485 ipr_find_ses_entry(struct ipr_resource_entry *res)
2486 {
2487 int i, j, matches;
2488 struct ipr_std_inq_vpids *vpids;
2489 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2490
2491 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2492 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2493 if (ste->compare_product_id_byte[j] == 'X') {
2494 vpids = &res->std_inq_data.vpids;
2495 if (vpids->product_id[j] == ste->product_id[j])
2496 matches++;
2497 else
2498 break;
2499 } else
2500 matches++;
2501 }
2502
2503 if (matches == IPR_PROD_ID_LEN)
2504 return ste;
2505 }
2506
2507 return NULL;
2508 }
2509
2510 /**
2511 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2512 * @ioa_cfg: ioa config struct
2513 * @bus: SCSI bus
2514 * @bus_width: bus width
2515 *
2516 * Return value:
2517 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2518 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2519 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2520 * max 160MHz = max 320MB/sec).
2521 **/
2522 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2523 {
2524 struct ipr_resource_entry *res;
2525 const struct ipr_ses_table_entry *ste;
2526 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2527
2528 /* Loop through each config table entry in the config table buffer */
2529 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2530 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2531 continue;
2532
2533 if (bus != res->bus)
2534 continue;
2535
2536 if (!(ste = ipr_find_ses_entry(res)))
2537 continue;
2538
2539 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2540 }
2541
2542 return max_xfer_rate;
2543 }
2544
2545 /**
2546 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2547 * @ioa_cfg: ioa config struct
2548 * @max_delay: max delay in micro-seconds to wait
2549 *
2550 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2551 *
2552 * Return value:
2553 * 0 on success / other on failure
2554 **/
2555 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2556 {
2557 volatile u32 pcii_reg;
2558 int delay = 1;
2559
2560 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2561 while (delay < max_delay) {
2562 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2563
2564 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2565 return 0;
2566
2567 /* udelay cannot be used if delay is more than a few milliseconds */
2568 if ((delay / 1000) > MAX_UDELAY_MS)
2569 mdelay(delay / 1000);
2570 else
2571 udelay(delay);
2572
2573 delay += delay;
2574 }
2575 return -EIO;
2576 }
2577
2578 /**
2579 * ipr_get_sis64_dump_data_section - Dump IOA memory
2580 * @ioa_cfg: ioa config struct
2581 * @start_addr: adapter address to dump
2582 * @dest: destination kernel buffer
2583 * @length_in_words: length to dump in 4 byte words
2584 *
2585 * Return value:
2586 * 0 on success
2587 **/
2588 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2589 u32 start_addr,
2590 __be32 *dest, u32 length_in_words)
2591 {
2592 int i;
2593
2594 for (i = 0; i < length_in_words; i++) {
2595 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2596 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2597 dest++;
2598 }
2599
2600 return 0;
2601 }
2602
2603 /**
2604 * ipr_get_ldump_data_section - Dump IOA memory
2605 * @ioa_cfg: ioa config struct
2606 * @start_addr: adapter address to dump
2607 * @dest: destination kernel buffer
2608 * @length_in_words: length to dump in 4 byte words
2609 *
2610 * Return value:
2611 * 0 on success / -EIO on failure
2612 **/
2613 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2614 u32 start_addr,
2615 __be32 *dest, u32 length_in_words)
2616 {
2617 volatile u32 temp_pcii_reg;
2618 int i, delay = 0;
2619
2620 if (ioa_cfg->sis64)
2621 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2622 dest, length_in_words);
2623
2624 /* Write IOA interrupt reg starting LDUMP state */
2625 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2626 ioa_cfg->regs.set_uproc_interrupt_reg32);
2627
2628 /* Wait for IO debug acknowledge */
2629 if (ipr_wait_iodbg_ack(ioa_cfg,
2630 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2631 dev_err(&ioa_cfg->pdev->dev,
2632 "IOA dump long data transfer timeout\n");
2633 return -EIO;
2634 }
2635
2636 /* Signal LDUMP interlocked - clear IO debug ack */
2637 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2638 ioa_cfg->regs.clr_interrupt_reg);
2639
2640 /* Write Mailbox with starting address */
2641 writel(start_addr, ioa_cfg->ioa_mailbox);
2642
2643 /* Signal address valid - clear IOA Reset alert */
2644 writel(IPR_UPROCI_RESET_ALERT,
2645 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2646
2647 for (i = 0; i < length_in_words; i++) {
2648 /* Wait for IO debug acknowledge */
2649 if (ipr_wait_iodbg_ack(ioa_cfg,
2650 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2651 dev_err(&ioa_cfg->pdev->dev,
2652 "IOA dump short data transfer timeout\n");
2653 return -EIO;
2654 }
2655
2656 /* Read data from mailbox and increment destination pointer */
2657 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2658 dest++;
2659
2660 /* For all but the last word of data, signal data received */
2661 if (i < (length_in_words - 1)) {
2662 /* Signal dump data received - Clear IO debug Ack */
2663 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2664 ioa_cfg->regs.clr_interrupt_reg);
2665 }
2666 }
2667
2668 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2669 writel(IPR_UPROCI_RESET_ALERT,
2670 ioa_cfg->regs.set_uproc_interrupt_reg32);
2671
2672 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2673 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2674
2675 /* Signal dump data received - Clear IO debug Ack */
2676 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2677 ioa_cfg->regs.clr_interrupt_reg);
2678
2679 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2680 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2681 temp_pcii_reg =
2682 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2683
2684 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2685 return 0;
2686
2687 udelay(10);
2688 delay += 10;
2689 }
2690
2691 return 0;
2692 }
2693
2694 #ifdef CONFIG_SCSI_IPR_DUMP
2695 /**
2696 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2697 * @ioa_cfg: ioa config struct
2698 * @pci_address: adapter address
2699 * @length: length of data to copy
2700 *
2701 * Copy data from PCI adapter to kernel buffer.
2702 * Note: length MUST be a 4 byte multiple
2703 * Return value:
2704 * 0 on success / other on failure
2705 **/
2706 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2707 unsigned long pci_address, u32 length)
2708 {
2709 int bytes_copied = 0;
2710 int cur_len, rc, rem_len, rem_page_len;
2711 __be32 *page;
2712 unsigned long lock_flags = 0;
2713 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2714
2715 while (bytes_copied < length &&
2716 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2717 if (ioa_dump->page_offset >= PAGE_SIZE ||
2718 ioa_dump->page_offset == 0) {
2719 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2720
2721 if (!page) {
2722 ipr_trace;
2723 return bytes_copied;
2724 }
2725
2726 ioa_dump->page_offset = 0;
2727 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2728 ioa_dump->next_page_index++;
2729 } else
2730 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2731
2732 rem_len = length - bytes_copied;
2733 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2734 cur_len = min(rem_len, rem_page_len);
2735
2736 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2737 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2738 rc = -EIO;
2739 } else {
2740 rc = ipr_get_ldump_data_section(ioa_cfg,
2741 pci_address + bytes_copied,
2742 &page[ioa_dump->page_offset / 4],
2743 (cur_len / sizeof(u32)));
2744 }
2745 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2746
2747 if (!rc) {
2748 ioa_dump->page_offset += cur_len;
2749 bytes_copied += cur_len;
2750 } else {
2751 ipr_trace;
2752 break;
2753 }
2754 schedule();
2755 }
2756
2757 return bytes_copied;
2758 }
2759
2760 /**
2761 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2762 * @hdr: dump entry header struct
2763 *
2764 * Return value:
2765 * nothing
2766 **/
2767 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2768 {
2769 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2770 hdr->num_elems = 1;
2771 hdr->offset = sizeof(*hdr);
2772 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2773 }
2774
2775 /**
2776 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2777 * @ioa_cfg: ioa config struct
2778 * @driver_dump: driver dump struct
2779 *
2780 * Return value:
2781 * nothing
2782 **/
2783 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2784 struct ipr_driver_dump *driver_dump)
2785 {
2786 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2787
2788 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2789 driver_dump->ioa_type_entry.hdr.len =
2790 sizeof(struct ipr_dump_ioa_type_entry) -
2791 sizeof(struct ipr_dump_entry_header);
2792 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2793 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2794 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2795 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2796 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2797 ucode_vpd->minor_release[1];
2798 driver_dump->hdr.num_entries++;
2799 }
2800
2801 /**
2802 * ipr_dump_version_data - Fill in the driver version in the dump.
2803 * @ioa_cfg: ioa config struct
2804 * @driver_dump: driver dump struct
2805 *
2806 * Return value:
2807 * nothing
2808 **/
2809 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2810 struct ipr_driver_dump *driver_dump)
2811 {
2812 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2813 driver_dump->version_entry.hdr.len =
2814 sizeof(struct ipr_dump_version_entry) -
2815 sizeof(struct ipr_dump_entry_header);
2816 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2817 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2818 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2819 driver_dump->hdr.num_entries++;
2820 }
2821
2822 /**
2823 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2824 * @ioa_cfg: ioa config struct
2825 * @driver_dump: driver dump struct
2826 *
2827 * Return value:
2828 * nothing
2829 **/
2830 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2831 struct ipr_driver_dump *driver_dump)
2832 {
2833 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2834 driver_dump->trace_entry.hdr.len =
2835 sizeof(struct ipr_dump_trace_entry) -
2836 sizeof(struct ipr_dump_entry_header);
2837 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2838 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2839 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2840 driver_dump->hdr.num_entries++;
2841 }
2842
2843 /**
2844 * ipr_dump_location_data - Fill in the IOA location in the dump.
2845 * @ioa_cfg: ioa config struct
2846 * @driver_dump: driver dump struct
2847 *
2848 * Return value:
2849 * nothing
2850 **/
2851 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2852 struct ipr_driver_dump *driver_dump)
2853 {
2854 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2855 driver_dump->location_entry.hdr.len =
2856 sizeof(struct ipr_dump_location_entry) -
2857 sizeof(struct ipr_dump_entry_header);
2858 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2859 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2860 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2861 driver_dump->hdr.num_entries++;
2862 }
2863
2864 /**
2865 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2866 * @ioa_cfg: ioa config struct
2867 * @dump: dump struct
2868 *
2869 * Return value:
2870 * nothing
2871 **/
2872 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2873 {
2874 unsigned long start_addr, sdt_word;
2875 unsigned long lock_flags = 0;
2876 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2877 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2878 u32 num_entries, start_off, end_off;
2879 u32 bytes_to_copy, bytes_copied, rc;
2880 struct ipr_sdt *sdt;
2881 int valid = 1;
2882 int i;
2883
2884 ENTER;
2885
2886 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2887
2888 if (ioa_cfg->sdt_state != GET_DUMP) {
2889 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2890 return;
2891 }
2892
2893 start_addr = readl(ioa_cfg->ioa_mailbox);
2894
2895 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
2896 dev_err(&ioa_cfg->pdev->dev,
2897 "Invalid dump table format: %lx\n", start_addr);
2898 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2899 return;
2900 }
2901
2902 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2903
2904 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2905
2906 /* Initialize the overall dump header */
2907 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2908 driver_dump->hdr.num_entries = 1;
2909 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2910 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2911 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2912 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2913
2914 ipr_dump_version_data(ioa_cfg, driver_dump);
2915 ipr_dump_location_data(ioa_cfg, driver_dump);
2916 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2917 ipr_dump_trace_data(ioa_cfg, driver_dump);
2918
2919 /* Update dump_header */
2920 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2921
2922 /* IOA Dump entry */
2923 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2924 ioa_dump->hdr.len = 0;
2925 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2926 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2927
2928 /* First entries in sdt are actually a list of dump addresses and
2929 lengths to gather the real dump data. sdt represents the pointer
2930 to the ioa generated dump table. Dump data will be extracted based
2931 on entries in this table */
2932 sdt = &ioa_dump->sdt;
2933
2934 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2935 sizeof(struct ipr_sdt) / sizeof(__be32));
2936
2937 /* Smart Dump table is ready to use and the first entry is valid */
2938 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2939 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
2940 dev_err(&ioa_cfg->pdev->dev,
2941 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2942 rc, be32_to_cpu(sdt->hdr.state));
2943 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2944 ioa_cfg->sdt_state = DUMP_OBTAINED;
2945 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2946 return;
2947 }
2948
2949 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2950
2951 if (num_entries > IPR_NUM_SDT_ENTRIES)
2952 num_entries = IPR_NUM_SDT_ENTRIES;
2953
2954 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2955
2956 for (i = 0; i < num_entries; i++) {
2957 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2958 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2959 break;
2960 }
2961
2962 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2963 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
2964 if (ioa_cfg->sis64)
2965 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
2966 else {
2967 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2968 end_off = be32_to_cpu(sdt->entry[i].end_token);
2969
2970 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
2971 bytes_to_copy = end_off - start_off;
2972 else
2973 valid = 0;
2974 }
2975 if (valid) {
2976 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2977 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2978 continue;
2979 }
2980
2981 /* Copy data from adapter to driver buffers */
2982 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2983 bytes_to_copy);
2984
2985 ioa_dump->hdr.len += bytes_copied;
2986
2987 if (bytes_copied != bytes_to_copy) {
2988 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2989 break;
2990 }
2991 }
2992 }
2993 }
2994
2995 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2996
2997 /* Update dump_header */
2998 driver_dump->hdr.len += ioa_dump->hdr.len;
2999 wmb();
3000 ioa_cfg->sdt_state = DUMP_OBTAINED;
3001 LEAVE;
3002 }
3003
3004 #else
3005 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3006 #endif
3007
3008 /**
3009 * ipr_release_dump - Free adapter dump memory
3010 * @kref: kref struct
3011 *
3012 * Return value:
3013 * nothing
3014 **/
3015 static void ipr_release_dump(struct kref *kref)
3016 {
3017 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3018 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3019 unsigned long lock_flags = 0;
3020 int i;
3021
3022 ENTER;
3023 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3024 ioa_cfg->dump = NULL;
3025 ioa_cfg->sdt_state = INACTIVE;
3026 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3027
3028 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3029 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3030
3031 kfree(dump);
3032 LEAVE;
3033 }
3034
3035 /**
3036 * ipr_worker_thread - Worker thread
3037 * @work: ioa config struct
3038 *
3039 * Called at task level from a work thread. This function takes care
3040 * of adding and removing device from the mid-layer as configuration
3041 * changes are detected by the adapter.
3042 *
3043 * Return value:
3044 * nothing
3045 **/
3046 static void ipr_worker_thread(struct work_struct *work)
3047 {
3048 unsigned long lock_flags;
3049 struct ipr_resource_entry *res;
3050 struct scsi_device *sdev;
3051 struct ipr_dump *dump;
3052 struct ipr_ioa_cfg *ioa_cfg =
3053 container_of(work, struct ipr_ioa_cfg, work_q);
3054 u8 bus, target, lun;
3055 int did_work;
3056
3057 ENTER;
3058 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3059
3060 if (ioa_cfg->sdt_state == GET_DUMP) {
3061 dump = ioa_cfg->dump;
3062 if (!dump) {
3063 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3064 return;
3065 }
3066 kref_get(&dump->kref);
3067 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3068 ipr_get_ioa_dump(ioa_cfg, dump);
3069 kref_put(&dump->kref, ipr_release_dump);
3070
3071 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3072 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
3073 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3074 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3075 return;
3076 }
3077
3078 restart:
3079 do {
3080 did_work = 0;
3081 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3082 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3083 return;
3084 }
3085
3086 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3087 if (res->del_from_ml && res->sdev) {
3088 did_work = 1;
3089 sdev = res->sdev;
3090 if (!scsi_device_get(sdev)) {
3091 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3092 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3093 scsi_remove_device(sdev);
3094 scsi_device_put(sdev);
3095 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3096 }
3097 break;
3098 }
3099 }
3100 } while(did_work);
3101
3102 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3103 if (res->add_to_ml) {
3104 bus = res->bus;
3105 target = res->target;
3106 lun = res->lun;
3107 res->add_to_ml = 0;
3108 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3109 scsi_add_device(ioa_cfg->host, bus, target, lun);
3110 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3111 goto restart;
3112 }
3113 }
3114
3115 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3116 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3117 LEAVE;
3118 }
3119
3120 #ifdef CONFIG_SCSI_IPR_TRACE
3121 /**
3122 * ipr_read_trace - Dump the adapter trace
3123 * @filp: open sysfs file
3124 * @kobj: kobject struct
3125 * @bin_attr: bin_attribute struct
3126 * @buf: buffer
3127 * @off: offset
3128 * @count: buffer size
3129 *
3130 * Return value:
3131 * number of bytes printed to buffer
3132 **/
3133 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3134 struct bin_attribute *bin_attr,
3135 char *buf, loff_t off, size_t count)
3136 {
3137 struct device *dev = container_of(kobj, struct device, kobj);
3138 struct Scsi_Host *shost = class_to_shost(dev);
3139 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3140 unsigned long lock_flags = 0;
3141 ssize_t ret;
3142
3143 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3144 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3145 IPR_TRACE_SIZE);
3146 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3147
3148 return ret;
3149 }
3150
3151 static struct bin_attribute ipr_trace_attr = {
3152 .attr = {
3153 .name = "trace",
3154 .mode = S_IRUGO,
3155 },
3156 .size = 0,
3157 .read = ipr_read_trace,
3158 };
3159 #endif
3160
3161 /**
3162 * ipr_show_fw_version - Show the firmware version
3163 * @dev: class device struct
3164 * @buf: buffer
3165 *
3166 * Return value:
3167 * number of bytes printed to buffer
3168 **/
3169 static ssize_t ipr_show_fw_version(struct device *dev,
3170 struct device_attribute *attr, char *buf)
3171 {
3172 struct Scsi_Host *shost = class_to_shost(dev);
3173 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3174 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3175 unsigned long lock_flags = 0;
3176 int len;
3177
3178 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3179 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3180 ucode_vpd->major_release, ucode_vpd->card_type,
3181 ucode_vpd->minor_release[0],
3182 ucode_vpd->minor_release[1]);
3183 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3184 return len;
3185 }
3186
3187 static struct device_attribute ipr_fw_version_attr = {
3188 .attr = {
3189 .name = "fw_version",
3190 .mode = S_IRUGO,
3191 },
3192 .show = ipr_show_fw_version,
3193 };
3194
3195 /**
3196 * ipr_show_log_level - Show the adapter's error logging level
3197 * @dev: class device struct
3198 * @buf: buffer
3199 *
3200 * Return value:
3201 * number of bytes printed to buffer
3202 **/
3203 static ssize_t ipr_show_log_level(struct device *dev,
3204 struct device_attribute *attr, char *buf)
3205 {
3206 struct Scsi_Host *shost = class_to_shost(dev);
3207 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3208 unsigned long lock_flags = 0;
3209 int len;
3210
3211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3212 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3213 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3214 return len;
3215 }
3216
3217 /**
3218 * ipr_store_log_level - Change the adapter's error logging level
3219 * @dev: class device struct
3220 * @buf: buffer
3221 *
3222 * Return value:
3223 * number of bytes printed to buffer
3224 **/
3225 static ssize_t ipr_store_log_level(struct device *dev,
3226 struct device_attribute *attr,
3227 const char *buf, size_t count)
3228 {
3229 struct Scsi_Host *shost = class_to_shost(dev);
3230 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3231 unsigned long lock_flags = 0;
3232
3233 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3234 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3235 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3236 return strlen(buf);
3237 }
3238
3239 static struct device_attribute ipr_log_level_attr = {
3240 .attr = {
3241 .name = "log_level",
3242 .mode = S_IRUGO | S_IWUSR,
3243 },
3244 .show = ipr_show_log_level,
3245 .store = ipr_store_log_level
3246 };
3247
3248 /**
3249 * ipr_store_diagnostics - IOA Diagnostics interface
3250 * @dev: device struct
3251 * @buf: buffer
3252 * @count: buffer size
3253 *
3254 * This function will reset the adapter and wait a reasonable
3255 * amount of time for any errors that the adapter might log.
3256 *
3257 * Return value:
3258 * count on success / other on failure
3259 **/
3260 static ssize_t ipr_store_diagnostics(struct device *dev,
3261 struct device_attribute *attr,
3262 const char *buf, size_t count)
3263 {
3264 struct Scsi_Host *shost = class_to_shost(dev);
3265 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3266 unsigned long lock_flags = 0;
3267 int rc = count;
3268
3269 if (!capable(CAP_SYS_ADMIN))
3270 return -EACCES;
3271
3272 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3273 while(ioa_cfg->in_reset_reload) {
3274 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3275 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3276 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3277 }
3278
3279 ioa_cfg->errors_logged = 0;
3280 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3281
3282 if (ioa_cfg->in_reset_reload) {
3283 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3284 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3285
3286 /* Wait for a second for any errors to be logged */
3287 msleep(1000);
3288 } else {
3289 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3290 return -EIO;
3291 }
3292
3293 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3294 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3295 rc = -EIO;
3296 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3297
3298 return rc;
3299 }
3300
3301 static struct device_attribute ipr_diagnostics_attr = {
3302 .attr = {
3303 .name = "run_diagnostics",
3304 .mode = S_IWUSR,
3305 },
3306 .store = ipr_store_diagnostics
3307 };
3308
3309 /**
3310 * ipr_show_adapter_state - Show the adapter's state
3311 * @class_dev: device struct
3312 * @buf: buffer
3313 *
3314 * Return value:
3315 * number of bytes printed to buffer
3316 **/
3317 static ssize_t ipr_show_adapter_state(struct device *dev,
3318 struct device_attribute *attr, char *buf)
3319 {
3320 struct Scsi_Host *shost = class_to_shost(dev);
3321 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3322 unsigned long lock_flags = 0;
3323 int len;
3324
3325 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3326 if (ioa_cfg->ioa_is_dead)
3327 len = snprintf(buf, PAGE_SIZE, "offline\n");
3328 else
3329 len = snprintf(buf, PAGE_SIZE, "online\n");
3330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3331 return len;
3332 }
3333
3334 /**
3335 * ipr_store_adapter_state - Change adapter state
3336 * @dev: device struct
3337 * @buf: buffer
3338 * @count: buffer size
3339 *
3340 * This function will change the adapter's state.
3341 *
3342 * Return value:
3343 * count on success / other on failure
3344 **/
3345 static ssize_t ipr_store_adapter_state(struct device *dev,
3346 struct device_attribute *attr,
3347 const char *buf, size_t count)
3348 {
3349 struct Scsi_Host *shost = class_to_shost(dev);
3350 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3351 unsigned long lock_flags;
3352 int result = count;
3353
3354 if (!capable(CAP_SYS_ADMIN))
3355 return -EACCES;
3356
3357 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3358 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
3359 ioa_cfg->ioa_is_dead = 0;
3360 ioa_cfg->reset_retries = 0;
3361 ioa_cfg->in_ioa_bringdown = 0;
3362 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3363 }
3364 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3365 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3366
3367 return result;
3368 }
3369
3370 static struct device_attribute ipr_ioa_state_attr = {
3371 .attr = {
3372 .name = "online_state",
3373 .mode = S_IRUGO | S_IWUSR,
3374 },
3375 .show = ipr_show_adapter_state,
3376 .store = ipr_store_adapter_state
3377 };
3378
3379 /**
3380 * ipr_store_reset_adapter - Reset the adapter
3381 * @dev: device struct
3382 * @buf: buffer
3383 * @count: buffer size
3384 *
3385 * This function will reset the adapter.
3386 *
3387 * Return value:
3388 * count on success / other on failure
3389 **/
3390 static ssize_t ipr_store_reset_adapter(struct device *dev,
3391 struct device_attribute *attr,
3392 const char *buf, size_t count)
3393 {
3394 struct Scsi_Host *shost = class_to_shost(dev);
3395 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3396 unsigned long lock_flags;
3397 int result = count;
3398
3399 if (!capable(CAP_SYS_ADMIN))
3400 return -EACCES;
3401
3402 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3403 if (!ioa_cfg->in_reset_reload)
3404 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3405 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3406 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3407
3408 return result;
3409 }
3410
3411 static struct device_attribute ipr_ioa_reset_attr = {
3412 .attr = {
3413 .name = "reset_host",
3414 .mode = S_IWUSR,
3415 },
3416 .store = ipr_store_reset_adapter
3417 };
3418
3419 /**
3420 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3421 * @buf_len: buffer length
3422 *
3423 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3424 * list to use for microcode download
3425 *
3426 * Return value:
3427 * pointer to sglist / NULL on failure
3428 **/
3429 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3430 {
3431 int sg_size, order, bsize_elem, num_elem, i, j;
3432 struct ipr_sglist *sglist;
3433 struct scatterlist *scatterlist;
3434 struct page *page;
3435
3436 /* Get the minimum size per scatter/gather element */
3437 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3438
3439 /* Get the actual size per element */
3440 order = get_order(sg_size);
3441
3442 /* Determine the actual number of bytes per element */
3443 bsize_elem = PAGE_SIZE * (1 << order);
3444
3445 /* Determine the actual number of sg entries needed */
3446 if (buf_len % bsize_elem)
3447 num_elem = (buf_len / bsize_elem) + 1;
3448 else
3449 num_elem = buf_len / bsize_elem;
3450
3451 /* Allocate a scatter/gather list for the DMA */
3452 sglist = kzalloc(sizeof(struct ipr_sglist) +
3453 (sizeof(struct scatterlist) * (num_elem - 1)),
3454 GFP_KERNEL);
3455
3456 if (sglist == NULL) {
3457 ipr_trace;
3458 return NULL;
3459 }
3460
3461 scatterlist = sglist->scatterlist;
3462 sg_init_table(scatterlist, num_elem);
3463
3464 sglist->order = order;
3465 sglist->num_sg = num_elem;
3466
3467 /* Allocate a bunch of sg elements */
3468 for (i = 0; i < num_elem; i++) {
3469 page = alloc_pages(GFP_KERNEL, order);
3470 if (!page) {
3471 ipr_trace;
3472
3473 /* Free up what we already allocated */
3474 for (j = i - 1; j >= 0; j--)
3475 __free_pages(sg_page(&scatterlist[j]), order);
3476 kfree(sglist);
3477 return NULL;
3478 }
3479
3480 sg_set_page(&scatterlist[i], page, 0, 0);
3481 }
3482
3483 return sglist;
3484 }
3485
3486 /**
3487 * ipr_free_ucode_buffer - Frees a microcode download buffer
3488 * @p_dnld: scatter/gather list pointer
3489 *
3490 * Free a DMA'able ucode download buffer previously allocated with
3491 * ipr_alloc_ucode_buffer
3492 *
3493 * Return value:
3494 * nothing
3495 **/
3496 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3497 {
3498 int i;
3499
3500 for (i = 0; i < sglist->num_sg; i++)
3501 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3502
3503 kfree(sglist);
3504 }
3505
3506 /**
3507 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3508 * @sglist: scatter/gather list pointer
3509 * @buffer: buffer pointer
3510 * @len: buffer length
3511 *
3512 * Copy a microcode image from a user buffer into a buffer allocated by
3513 * ipr_alloc_ucode_buffer
3514 *
3515 * Return value:
3516 * 0 on success / other on failure
3517 **/
3518 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3519 u8 *buffer, u32 len)
3520 {
3521 int bsize_elem, i, result = 0;
3522 struct scatterlist *scatterlist;
3523 void *kaddr;
3524
3525 /* Determine the actual number of bytes per element */
3526 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3527
3528 scatterlist = sglist->scatterlist;
3529
3530 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3531 struct page *page = sg_page(&scatterlist[i]);
3532
3533 kaddr = kmap(page);
3534 memcpy(kaddr, buffer, bsize_elem);
3535 kunmap(page);
3536
3537 scatterlist[i].length = bsize_elem;
3538
3539 if (result != 0) {
3540 ipr_trace;
3541 return result;
3542 }
3543 }
3544
3545 if (len % bsize_elem) {
3546 struct page *page = sg_page(&scatterlist[i]);
3547
3548 kaddr = kmap(page);
3549 memcpy(kaddr, buffer, len % bsize_elem);
3550 kunmap(page);
3551
3552 scatterlist[i].length = len % bsize_elem;
3553 }
3554
3555 sglist->buffer_len = len;
3556 return result;
3557 }
3558
3559 /**
3560 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3561 * @ipr_cmd: ipr command struct
3562 * @sglist: scatter/gather list
3563 *
3564 * Builds a microcode download IOA data list (IOADL).
3565 *
3566 **/
3567 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3568 struct ipr_sglist *sglist)
3569 {
3570 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3571 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3572 struct scatterlist *scatterlist = sglist->scatterlist;
3573 int i;
3574
3575 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3576 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3577 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3578
3579 ioarcb->ioadl_len =
3580 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3581 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3582 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3583 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3584 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3585 }
3586
3587 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3588 }
3589
3590 /**
3591 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3592 * @ipr_cmd: ipr command struct
3593 * @sglist: scatter/gather list
3594 *
3595 * Builds a microcode download IOA data list (IOADL).
3596 *
3597 **/
3598 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3599 struct ipr_sglist *sglist)
3600 {
3601 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3602 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3603 struct scatterlist *scatterlist = sglist->scatterlist;
3604 int i;
3605
3606 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3607 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3608 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3609
3610 ioarcb->ioadl_len =
3611 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3612
3613 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3614 ioadl[i].flags_and_data_len =
3615 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3616 ioadl[i].address =
3617 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3618 }
3619
3620 ioadl[i-1].flags_and_data_len |=
3621 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3622 }
3623
3624 /**
3625 * ipr_update_ioa_ucode - Update IOA's microcode
3626 * @ioa_cfg: ioa config struct
3627 * @sglist: scatter/gather list
3628 *
3629 * Initiate an adapter reset to update the IOA's microcode
3630 *
3631 * Return value:
3632 * 0 on success / -EIO on failure
3633 **/
3634 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3635 struct ipr_sglist *sglist)
3636 {
3637 unsigned long lock_flags;
3638
3639 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3640 while(ioa_cfg->in_reset_reload) {
3641 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3642 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3643 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3644 }
3645
3646 if (ioa_cfg->ucode_sglist) {
3647 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3648 dev_err(&ioa_cfg->pdev->dev,
3649 "Microcode download already in progress\n");
3650 return -EIO;
3651 }
3652
3653 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3654 sglist->num_sg, DMA_TO_DEVICE);
3655
3656 if (!sglist->num_dma_sg) {
3657 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3658 dev_err(&ioa_cfg->pdev->dev,
3659 "Failed to map microcode download buffer!\n");
3660 return -EIO;
3661 }
3662
3663 ioa_cfg->ucode_sglist = sglist;
3664 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3665 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3666 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3667
3668 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3669 ioa_cfg->ucode_sglist = NULL;
3670 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3671 return 0;
3672 }
3673
3674 /**
3675 * ipr_store_update_fw - Update the firmware on the adapter
3676 * @class_dev: device struct
3677 * @buf: buffer
3678 * @count: buffer size
3679 *
3680 * This function will update the firmware on the adapter.
3681 *
3682 * Return value:
3683 * count on success / other on failure
3684 **/
3685 static ssize_t ipr_store_update_fw(struct device *dev,
3686 struct device_attribute *attr,
3687 const char *buf, size_t count)
3688 {
3689 struct Scsi_Host *shost = class_to_shost(dev);
3690 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3691 struct ipr_ucode_image_header *image_hdr;
3692 const struct firmware *fw_entry;
3693 struct ipr_sglist *sglist;
3694 char fname[100];
3695 char *src;
3696 int len, result, dnld_size;
3697
3698 if (!capable(CAP_SYS_ADMIN))
3699 return -EACCES;
3700
3701 len = snprintf(fname, 99, "%s", buf);
3702 fname[len-1] = '\0';
3703
3704 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3705 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3706 return -EIO;
3707 }
3708
3709 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3710
3711 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3712 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3713 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3714 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3715 release_firmware(fw_entry);
3716 return -EINVAL;
3717 }
3718
3719 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3720 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3721 sglist = ipr_alloc_ucode_buffer(dnld_size);
3722
3723 if (!sglist) {
3724 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3725 release_firmware(fw_entry);
3726 return -ENOMEM;
3727 }
3728
3729 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3730
3731 if (result) {
3732 dev_err(&ioa_cfg->pdev->dev,
3733 "Microcode buffer copy to DMA buffer failed\n");
3734 goto out;
3735 }
3736
3737 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3738
3739 if (!result)
3740 result = count;
3741 out:
3742 ipr_free_ucode_buffer(sglist);
3743 release_firmware(fw_entry);
3744 return result;
3745 }
3746
3747 static struct device_attribute ipr_update_fw_attr = {
3748 .attr = {
3749 .name = "update_fw",
3750 .mode = S_IWUSR,
3751 },
3752 .store = ipr_store_update_fw
3753 };
3754
3755 static struct device_attribute *ipr_ioa_attrs[] = {
3756 &ipr_fw_version_attr,
3757 &ipr_log_level_attr,
3758 &ipr_diagnostics_attr,
3759 &ipr_ioa_state_attr,
3760 &ipr_ioa_reset_attr,
3761 &ipr_update_fw_attr,
3762 NULL,
3763 };
3764
3765 #ifdef CONFIG_SCSI_IPR_DUMP
3766 /**
3767 * ipr_read_dump - Dump the adapter
3768 * @filp: open sysfs file
3769 * @kobj: kobject struct
3770 * @bin_attr: bin_attribute struct
3771 * @buf: buffer
3772 * @off: offset
3773 * @count: buffer size
3774 *
3775 * Return value:
3776 * number of bytes printed to buffer
3777 **/
3778 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
3779 struct bin_attribute *bin_attr,
3780 char *buf, loff_t off, size_t count)
3781 {
3782 struct device *cdev = container_of(kobj, struct device, kobj);
3783 struct Scsi_Host *shost = class_to_shost(cdev);
3784 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3785 struct ipr_dump *dump;
3786 unsigned long lock_flags = 0;
3787 char *src;
3788 int len;
3789 size_t rc = count;
3790
3791 if (!capable(CAP_SYS_ADMIN))
3792 return -EACCES;
3793
3794 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3795 dump = ioa_cfg->dump;
3796
3797 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3798 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3799 return 0;
3800 }
3801 kref_get(&dump->kref);
3802 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3803
3804 if (off > dump->driver_dump.hdr.len) {
3805 kref_put(&dump->kref, ipr_release_dump);
3806 return 0;
3807 }
3808
3809 if (off + count > dump->driver_dump.hdr.len) {
3810 count = dump->driver_dump.hdr.len - off;
3811 rc = count;
3812 }
3813
3814 if (count && off < sizeof(dump->driver_dump)) {
3815 if (off + count > sizeof(dump->driver_dump))
3816 len = sizeof(dump->driver_dump) - off;
3817 else
3818 len = count;
3819 src = (u8 *)&dump->driver_dump + off;
3820 memcpy(buf, src, len);
3821 buf += len;
3822 off += len;
3823 count -= len;
3824 }
3825
3826 off -= sizeof(dump->driver_dump);
3827
3828 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3829 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3830 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3831 else
3832 len = count;
3833 src = (u8 *)&dump->ioa_dump + off;
3834 memcpy(buf, src, len);
3835 buf += len;
3836 off += len;
3837 count -= len;
3838 }
3839
3840 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3841
3842 while (count) {
3843 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3844 len = PAGE_ALIGN(off) - off;
3845 else
3846 len = count;
3847 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3848 src += off & ~PAGE_MASK;
3849 memcpy(buf, src, len);
3850 buf += len;
3851 off += len;
3852 count -= len;
3853 }
3854
3855 kref_put(&dump->kref, ipr_release_dump);
3856 return rc;
3857 }
3858
3859 /**
3860 * ipr_alloc_dump - Prepare for adapter dump
3861 * @ioa_cfg: ioa config struct
3862 *
3863 * Return value:
3864 * 0 on success / other on failure
3865 **/
3866 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3867 {
3868 struct ipr_dump *dump;
3869 unsigned long lock_flags = 0;
3870
3871 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3872
3873 if (!dump) {
3874 ipr_err("Dump memory allocation failed\n");
3875 return -ENOMEM;
3876 }
3877
3878 kref_init(&dump->kref);
3879 dump->ioa_cfg = ioa_cfg;
3880
3881 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3882
3883 if (INACTIVE != ioa_cfg->sdt_state) {
3884 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3885 kfree(dump);
3886 return 0;
3887 }
3888
3889 ioa_cfg->dump = dump;
3890 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3891 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3892 ioa_cfg->dump_taken = 1;
3893 schedule_work(&ioa_cfg->work_q);
3894 }
3895 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3896
3897 return 0;
3898 }
3899
3900 /**
3901 * ipr_free_dump - Free adapter dump memory
3902 * @ioa_cfg: ioa config struct
3903 *
3904 * Return value:
3905 * 0 on success / other on failure
3906 **/
3907 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3908 {
3909 struct ipr_dump *dump;
3910 unsigned long lock_flags = 0;
3911
3912 ENTER;
3913
3914 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3915 dump = ioa_cfg->dump;
3916 if (!dump) {
3917 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3918 return 0;
3919 }
3920
3921 ioa_cfg->dump = NULL;
3922 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3923
3924 kref_put(&dump->kref, ipr_release_dump);
3925
3926 LEAVE;
3927 return 0;
3928 }
3929
3930 /**
3931 * ipr_write_dump - Setup dump state of adapter
3932 * @filp: open sysfs file
3933 * @kobj: kobject struct
3934 * @bin_attr: bin_attribute struct
3935 * @buf: buffer
3936 * @off: offset
3937 * @count: buffer size
3938 *
3939 * Return value:
3940 * number of bytes printed to buffer
3941 **/
3942 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
3943 struct bin_attribute *bin_attr,
3944 char *buf, loff_t off, size_t count)
3945 {
3946 struct device *cdev = container_of(kobj, struct device, kobj);
3947 struct Scsi_Host *shost = class_to_shost(cdev);
3948 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3949 int rc;
3950
3951 if (!capable(CAP_SYS_ADMIN))
3952 return -EACCES;
3953
3954 if (buf[0] == '1')
3955 rc = ipr_alloc_dump(ioa_cfg);
3956 else if (buf[0] == '0')
3957 rc = ipr_free_dump(ioa_cfg);
3958 else
3959 return -EINVAL;
3960
3961 if (rc)
3962 return rc;
3963 else
3964 return count;
3965 }
3966
3967 static struct bin_attribute ipr_dump_attr = {
3968 .attr = {
3969 .name = "dump",
3970 .mode = S_IRUSR | S_IWUSR,
3971 },
3972 .size = 0,
3973 .read = ipr_read_dump,
3974 .write = ipr_write_dump
3975 };
3976 #else
3977 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3978 #endif
3979
3980 /**
3981 * ipr_change_queue_depth - Change the device's queue depth
3982 * @sdev: scsi device struct
3983 * @qdepth: depth to set
3984 * @reason: calling context
3985 *
3986 * Return value:
3987 * actual depth set
3988 **/
3989 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
3990 int reason)
3991 {
3992 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3993 struct ipr_resource_entry *res;
3994 unsigned long lock_flags = 0;
3995
3996 if (reason != SCSI_QDEPTH_DEFAULT)
3997 return -EOPNOTSUPP;
3998
3999 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4000 res = (struct ipr_resource_entry *)sdev->hostdata;
4001
4002 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4003 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4004 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4005
4006 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4007 return sdev->queue_depth;
4008 }
4009
4010 /**
4011 * ipr_change_queue_type - Change the device's queue type
4012 * @dsev: scsi device struct
4013 * @tag_type: type of tags to use
4014 *
4015 * Return value:
4016 * actual queue type set
4017 **/
4018 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4019 {
4020 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4021 struct ipr_resource_entry *res;
4022 unsigned long lock_flags = 0;
4023
4024 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4025 res = (struct ipr_resource_entry *)sdev->hostdata;
4026
4027 if (res) {
4028 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4029 /*
4030 * We don't bother quiescing the device here since the
4031 * adapter firmware does it for us.
4032 */
4033 scsi_set_tag_type(sdev, tag_type);
4034
4035 if (tag_type)
4036 scsi_activate_tcq(sdev, sdev->queue_depth);
4037 else
4038 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4039 } else
4040 tag_type = 0;
4041 } else
4042 tag_type = 0;
4043
4044 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4045 return tag_type;
4046 }
4047
4048 /**
4049 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4050 * @dev: device struct
4051 * @buf: buffer
4052 *
4053 * Return value:
4054 * number of bytes printed to buffer
4055 **/
4056 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4057 {
4058 struct scsi_device *sdev = to_scsi_device(dev);
4059 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4060 struct ipr_resource_entry *res;
4061 unsigned long lock_flags = 0;
4062 ssize_t len = -ENXIO;
4063
4064 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4065 res = (struct ipr_resource_entry *)sdev->hostdata;
4066 if (res)
4067 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4068 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4069 return len;
4070 }
4071
4072 static struct device_attribute ipr_adapter_handle_attr = {
4073 .attr = {
4074 .name = "adapter_handle",
4075 .mode = S_IRUSR,
4076 },
4077 .show = ipr_show_adapter_handle
4078 };
4079
4080 /**
4081 * ipr_show_resource_path - Show the resource path for this device.
4082 * @dev: device struct
4083 * @buf: buffer
4084 *
4085 * Return value:
4086 * number of bytes printed to buffer
4087 **/
4088 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4089 {
4090 struct scsi_device *sdev = to_scsi_device(dev);
4091 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4092 struct ipr_resource_entry *res;
4093 unsigned long lock_flags = 0;
4094 ssize_t len = -ENXIO;
4095 char buffer[IPR_MAX_RES_PATH_LENGTH];
4096
4097 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4098 res = (struct ipr_resource_entry *)sdev->hostdata;
4099 if (res)
4100 len = snprintf(buf, PAGE_SIZE, "%s\n",
4101 ipr_format_resource_path(&res->res_path[0], &buffer[0]));
4102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4103 return len;
4104 }
4105
4106 static struct device_attribute ipr_resource_path_attr = {
4107 .attr = {
4108 .name = "resource_path",
4109 .mode = S_IRUSR,
4110 },
4111 .show = ipr_show_resource_path
4112 };
4113
4114 static struct device_attribute *ipr_dev_attrs[] = {
4115 &ipr_adapter_handle_attr,
4116 &ipr_resource_path_attr,
4117 NULL,
4118 };
4119
4120 /**
4121 * ipr_biosparam - Return the HSC mapping
4122 * @sdev: scsi device struct
4123 * @block_device: block device pointer
4124 * @capacity: capacity of the device
4125 * @parm: Array containing returned HSC values.
4126 *
4127 * This function generates the HSC parms that fdisk uses.
4128 * We want to make sure we return something that places partitions
4129 * on 4k boundaries for best performance with the IOA.
4130 *
4131 * Return value:
4132 * 0 on success
4133 **/
4134 static int ipr_biosparam(struct scsi_device *sdev,
4135 struct block_device *block_device,
4136 sector_t capacity, int *parm)
4137 {
4138 int heads, sectors;
4139 sector_t cylinders;
4140
4141 heads = 128;
4142 sectors = 32;
4143
4144 cylinders = capacity;
4145 sector_div(cylinders, (128 * 32));
4146
4147 /* return result */
4148 parm[0] = heads;
4149 parm[1] = sectors;
4150 parm[2] = cylinders;
4151
4152 return 0;
4153 }
4154
4155 /**
4156 * ipr_find_starget - Find target based on bus/target.
4157 * @starget: scsi target struct
4158 *
4159 * Return value:
4160 * resource entry pointer if found / NULL if not found
4161 **/
4162 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4163 {
4164 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4165 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4166 struct ipr_resource_entry *res;
4167
4168 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4169 if ((res->bus == starget->channel) &&
4170 (res->target == starget->id) &&
4171 (res->lun == 0)) {
4172 return res;
4173 }
4174 }
4175
4176 return NULL;
4177 }
4178
4179 static struct ata_port_info sata_port_info;
4180
4181 /**
4182 * ipr_target_alloc - Prepare for commands to a SCSI target
4183 * @starget: scsi target struct
4184 *
4185 * If the device is a SATA device, this function allocates an
4186 * ATA port with libata, else it does nothing.
4187 *
4188 * Return value:
4189 * 0 on success / non-0 on failure
4190 **/
4191 static int ipr_target_alloc(struct scsi_target *starget)
4192 {
4193 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4194 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4195 struct ipr_sata_port *sata_port;
4196 struct ata_port *ap;
4197 struct ipr_resource_entry *res;
4198 unsigned long lock_flags;
4199
4200 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4201 res = ipr_find_starget(starget);
4202 starget->hostdata = NULL;
4203
4204 if (res && ipr_is_gata(res)) {
4205 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4206 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4207 if (!sata_port)
4208 return -ENOMEM;
4209
4210 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4211 if (ap) {
4212 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4213 sata_port->ioa_cfg = ioa_cfg;
4214 sata_port->ap = ap;
4215 sata_port->res = res;
4216
4217 res->sata_port = sata_port;
4218 ap->private_data = sata_port;
4219 starget->hostdata = sata_port;
4220 } else {
4221 kfree(sata_port);
4222 return -ENOMEM;
4223 }
4224 }
4225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4226
4227 return 0;
4228 }
4229
4230 /**
4231 * ipr_target_destroy - Destroy a SCSI target
4232 * @starget: scsi target struct
4233 *
4234 * If the device was a SATA device, this function frees the libata
4235 * ATA port, else it does nothing.
4236 *
4237 **/
4238 static void ipr_target_destroy(struct scsi_target *starget)
4239 {
4240 struct ipr_sata_port *sata_port = starget->hostdata;
4241 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4242 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4243
4244 if (ioa_cfg->sis64) {
4245 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4246 clear_bit(starget->id, ioa_cfg->array_ids);
4247 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4248 clear_bit(starget->id, ioa_cfg->vset_ids);
4249 else if (starget->channel == 0)
4250 clear_bit(starget->id, ioa_cfg->target_ids);
4251 }
4252
4253 if (sata_port) {
4254 starget->hostdata = NULL;
4255 ata_sas_port_destroy(sata_port->ap);
4256 kfree(sata_port);
4257 }
4258 }
4259
4260 /**
4261 * ipr_find_sdev - Find device based on bus/target/lun.
4262 * @sdev: scsi device struct
4263 *
4264 * Return value:
4265 * resource entry pointer if found / NULL if not found
4266 **/
4267 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4268 {
4269 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4270 struct ipr_resource_entry *res;
4271
4272 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4273 if ((res->bus == sdev->channel) &&
4274 (res->target == sdev->id) &&
4275 (res->lun == sdev->lun))
4276 return res;
4277 }
4278
4279 return NULL;
4280 }
4281
4282 /**
4283 * ipr_slave_destroy - Unconfigure a SCSI device
4284 * @sdev: scsi device struct
4285 *
4286 * Return value:
4287 * nothing
4288 **/
4289 static void ipr_slave_destroy(struct scsi_device *sdev)
4290 {
4291 struct ipr_resource_entry *res;
4292 struct ipr_ioa_cfg *ioa_cfg;
4293 unsigned long lock_flags = 0;
4294
4295 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4296
4297 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4298 res = (struct ipr_resource_entry *) sdev->hostdata;
4299 if (res) {
4300 if (res->sata_port)
4301 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4302 sdev->hostdata = NULL;
4303 res->sdev = NULL;
4304 res->sata_port = NULL;
4305 }
4306 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4307 }
4308
4309 /**
4310 * ipr_slave_configure - Configure a SCSI device
4311 * @sdev: scsi device struct
4312 *
4313 * This function configures the specified scsi device.
4314 *
4315 * Return value:
4316 * 0 on success
4317 **/
4318 static int ipr_slave_configure(struct scsi_device *sdev)
4319 {
4320 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4321 struct ipr_resource_entry *res;
4322 struct ata_port *ap = NULL;
4323 unsigned long lock_flags = 0;
4324 char buffer[IPR_MAX_RES_PATH_LENGTH];
4325
4326 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4327 res = sdev->hostdata;
4328 if (res) {
4329 if (ipr_is_af_dasd_device(res))
4330 sdev->type = TYPE_RAID;
4331 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4332 sdev->scsi_level = 4;
4333 sdev->no_uld_attach = 1;
4334 }
4335 if (ipr_is_vset_device(res)) {
4336 blk_queue_rq_timeout(sdev->request_queue,
4337 IPR_VSET_RW_TIMEOUT);
4338 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4339 }
4340 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
4341 sdev->allow_restart = 1;
4342 if (ipr_is_gata(res) && res->sata_port)
4343 ap = res->sata_port->ap;
4344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4345
4346 if (ap) {
4347 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
4348 ata_sas_slave_configure(sdev, ap);
4349 } else
4350 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4351 if (ioa_cfg->sis64)
4352 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4353 ipr_format_resource_path(&res->res_path[0], &buffer[0]));
4354 return 0;
4355 }
4356 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4357 return 0;
4358 }
4359
4360 /**
4361 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4362 * @sdev: scsi device struct
4363 *
4364 * This function initializes an ATA port so that future commands
4365 * sent through queuecommand will work.
4366 *
4367 * Return value:
4368 * 0 on success
4369 **/
4370 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4371 {
4372 struct ipr_sata_port *sata_port = NULL;
4373 int rc = -ENXIO;
4374
4375 ENTER;
4376 if (sdev->sdev_target)
4377 sata_port = sdev->sdev_target->hostdata;
4378 if (sata_port)
4379 rc = ata_sas_port_init(sata_port->ap);
4380 if (rc)
4381 ipr_slave_destroy(sdev);
4382
4383 LEAVE;
4384 return rc;
4385 }
4386
4387 /**
4388 * ipr_slave_alloc - Prepare for commands to a device.
4389 * @sdev: scsi device struct
4390 *
4391 * This function saves a pointer to the resource entry
4392 * in the scsi device struct if the device exists. We
4393 * can then use this pointer in ipr_queuecommand when
4394 * handling new commands.
4395 *
4396 * Return value:
4397 * 0 on success / -ENXIO if device does not exist
4398 **/
4399 static int ipr_slave_alloc(struct scsi_device *sdev)
4400 {
4401 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4402 struct ipr_resource_entry *res;
4403 unsigned long lock_flags;
4404 int rc = -ENXIO;
4405
4406 sdev->hostdata = NULL;
4407
4408 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4409
4410 res = ipr_find_sdev(sdev);
4411 if (res) {
4412 res->sdev = sdev;
4413 res->add_to_ml = 0;
4414 res->in_erp = 0;
4415 sdev->hostdata = res;
4416 if (!ipr_is_naca_model(res))
4417 res->needs_sync_complete = 1;
4418 rc = 0;
4419 if (ipr_is_gata(res)) {
4420 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4421 return ipr_ata_slave_alloc(sdev);
4422 }
4423 }
4424
4425 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4426
4427 return rc;
4428 }
4429
4430 /**
4431 * ipr_eh_host_reset - Reset the host adapter
4432 * @scsi_cmd: scsi command struct
4433 *
4434 * Return value:
4435 * SUCCESS / FAILED
4436 **/
4437 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
4438 {
4439 struct ipr_ioa_cfg *ioa_cfg;
4440 int rc;
4441
4442 ENTER;
4443 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4444
4445 dev_err(&ioa_cfg->pdev->dev,
4446 "Adapter being reset as a result of error recovery.\n");
4447
4448 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4449 ioa_cfg->sdt_state = GET_DUMP;
4450
4451 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4452
4453 LEAVE;
4454 return rc;
4455 }
4456
4457 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
4458 {
4459 int rc;
4460
4461 spin_lock_irq(cmd->device->host->host_lock);
4462 rc = __ipr_eh_host_reset(cmd);
4463 spin_unlock_irq(cmd->device->host->host_lock);
4464
4465 return rc;
4466 }
4467
4468 /**
4469 * ipr_device_reset - Reset the device
4470 * @ioa_cfg: ioa config struct
4471 * @res: resource entry struct
4472 *
4473 * This function issues a device reset to the affected device.
4474 * If the device is a SCSI device, a LUN reset will be sent
4475 * to the device first. If that does not work, a target reset
4476 * will be sent. If the device is a SATA device, a PHY reset will
4477 * be sent.
4478 *
4479 * Return value:
4480 * 0 on success / non-zero on failure
4481 **/
4482 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4483 struct ipr_resource_entry *res)
4484 {
4485 struct ipr_cmnd *ipr_cmd;
4486 struct ipr_ioarcb *ioarcb;
4487 struct ipr_cmd_pkt *cmd_pkt;
4488 struct ipr_ioarcb_ata_regs *regs;
4489 u32 ioasc;
4490
4491 ENTER;
4492 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4493 ioarcb = &ipr_cmd->ioarcb;
4494 cmd_pkt = &ioarcb->cmd_pkt;
4495
4496 if (ipr_cmd->ioa_cfg->sis64) {
4497 regs = &ipr_cmd->i.ata_ioadl.regs;
4498 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4499 } else
4500 regs = &ioarcb->u.add_data.u.regs;
4501
4502 ioarcb->res_handle = res->res_handle;
4503 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4504 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4505 if (ipr_is_gata(res)) {
4506 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
4507 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
4508 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4509 }
4510
4511 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4512 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4513 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4514 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
4515 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
4516 sizeof(struct ipr_ioasa_gata));
4517
4518 LEAVE;
4519 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
4520 }
4521
4522 /**
4523 * ipr_sata_reset - Reset the SATA port
4524 * @link: SATA link to reset
4525 * @classes: class of the attached device
4526 *
4527 * This function issues a SATA phy reset to the affected ATA link.
4528 *
4529 * Return value:
4530 * 0 on success / non-zero on failure
4531 **/
4532 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
4533 unsigned long deadline)
4534 {
4535 struct ipr_sata_port *sata_port = link->ap->private_data;
4536 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4537 struct ipr_resource_entry *res;
4538 unsigned long lock_flags = 0;
4539 int rc = -ENXIO;
4540
4541 ENTER;
4542 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4543 while(ioa_cfg->in_reset_reload) {
4544 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4545 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4546 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4547 }
4548
4549 res = sata_port->res;
4550 if (res) {
4551 rc = ipr_device_reset(ioa_cfg, res);
4552 *classes = res->ata_class;
4553 }
4554
4555 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4556 LEAVE;
4557 return rc;
4558 }
4559
4560 /**
4561 * ipr_eh_dev_reset - Reset the device
4562 * @scsi_cmd: scsi command struct
4563 *
4564 * This function issues a device reset to the affected device.
4565 * A LUN reset will be sent to the device first. If that does
4566 * not work, a target reset will be sent.
4567 *
4568 * Return value:
4569 * SUCCESS / FAILED
4570 **/
4571 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
4572 {
4573 struct ipr_cmnd *ipr_cmd;
4574 struct ipr_ioa_cfg *ioa_cfg;
4575 struct ipr_resource_entry *res;
4576 struct ata_port *ap;
4577 int rc = 0;
4578
4579 ENTER;
4580 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4581 res = scsi_cmd->device->hostdata;
4582
4583 if (!res)
4584 return FAILED;
4585
4586 /*
4587 * If we are currently going through reset/reload, return failed. This will force the
4588 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4589 * reset to complete
4590 */
4591 if (ioa_cfg->in_reset_reload)
4592 return FAILED;
4593 if (ioa_cfg->ioa_is_dead)
4594 return FAILED;
4595
4596 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4597 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4598 if (ipr_cmd->scsi_cmd)
4599 ipr_cmd->done = ipr_scsi_eh_done;
4600 if (ipr_cmd->qc)
4601 ipr_cmd->done = ipr_sata_eh_done;
4602 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4603 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4604 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4605 }
4606 }
4607 }
4608
4609 res->resetting_device = 1;
4610 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
4611
4612 if (ipr_is_gata(res) && res->sata_port) {
4613 ap = res->sata_port->ap;
4614 spin_unlock_irq(scsi_cmd->device->host->host_lock);
4615 ata_std_error_handler(ap);
4616 spin_lock_irq(scsi_cmd->device->host->host_lock);
4617
4618 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4619 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4620 rc = -EIO;
4621 break;
4622 }
4623 }
4624 } else
4625 rc = ipr_device_reset(ioa_cfg, res);
4626 res->resetting_device = 0;
4627
4628 LEAVE;
4629 return (rc ? FAILED : SUCCESS);
4630 }
4631
4632 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
4633 {
4634 int rc;
4635
4636 spin_lock_irq(cmd->device->host->host_lock);
4637 rc = __ipr_eh_dev_reset(cmd);
4638 spin_unlock_irq(cmd->device->host->host_lock);
4639
4640 return rc;
4641 }
4642
4643 /**
4644 * ipr_bus_reset_done - Op done function for bus reset.
4645 * @ipr_cmd: ipr command struct
4646 *
4647 * This function is the op done function for a bus reset
4648 *
4649 * Return value:
4650 * none
4651 **/
4652 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
4653 {
4654 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4655 struct ipr_resource_entry *res;
4656
4657 ENTER;
4658 if (!ioa_cfg->sis64)
4659 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4660 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
4661 scsi_report_bus_reset(ioa_cfg->host, res->bus);
4662 break;
4663 }
4664 }
4665
4666 /*
4667 * If abort has not completed, indicate the reset has, else call the
4668 * abort's done function to wake the sleeping eh thread
4669 */
4670 if (ipr_cmd->sibling->sibling)
4671 ipr_cmd->sibling->sibling = NULL;
4672 else
4673 ipr_cmd->sibling->done(ipr_cmd->sibling);
4674
4675 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4676 LEAVE;
4677 }
4678
4679 /**
4680 * ipr_abort_timeout - An abort task has timed out
4681 * @ipr_cmd: ipr command struct
4682 *
4683 * This function handles when an abort task times out. If this
4684 * happens we issue a bus reset since we have resources tied
4685 * up that must be freed before returning to the midlayer.
4686 *
4687 * Return value:
4688 * none
4689 **/
4690 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4691 {
4692 struct ipr_cmnd *reset_cmd;
4693 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4694 struct ipr_cmd_pkt *cmd_pkt;
4695 unsigned long lock_flags = 0;
4696
4697 ENTER;
4698 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4699 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4700 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4701 return;
4702 }
4703
4704 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4705 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4706 ipr_cmd->sibling = reset_cmd;
4707 reset_cmd->sibling = ipr_cmd;
4708 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4709 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4710 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4711 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4712 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4713
4714 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4715 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4716 LEAVE;
4717 }
4718
4719 /**
4720 * ipr_cancel_op - Cancel specified op
4721 * @scsi_cmd: scsi command struct
4722 *
4723 * This function cancels specified op.
4724 *
4725 * Return value:
4726 * SUCCESS / FAILED
4727 **/
4728 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4729 {
4730 struct ipr_cmnd *ipr_cmd;
4731 struct ipr_ioa_cfg *ioa_cfg;
4732 struct ipr_resource_entry *res;
4733 struct ipr_cmd_pkt *cmd_pkt;
4734 u32 ioasc;
4735 int op_found = 0;
4736
4737 ENTER;
4738 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4739 res = scsi_cmd->device->hostdata;
4740
4741 /* If we are currently going through reset/reload, return failed.
4742 * This will force the mid-layer to call ipr_eh_host_reset,
4743 * which will then go to sleep and wait for the reset to complete
4744 */
4745 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4746 return FAILED;
4747 if (!res || !ipr_is_gscsi(res))
4748 return FAILED;
4749
4750 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4751 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4752 ipr_cmd->done = ipr_scsi_eh_done;
4753 op_found = 1;
4754 break;
4755 }
4756 }
4757
4758 if (!op_found)
4759 return SUCCESS;
4760
4761 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4762 ipr_cmd->ioarcb.res_handle = res->res_handle;
4763 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4764 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4765 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4766 ipr_cmd->u.sdev = scsi_cmd->device;
4767
4768 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4769 scsi_cmd->cmnd[0]);
4770 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4771 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4772
4773 /*
4774 * If the abort task timed out and we sent a bus reset, we will get
4775 * one the following responses to the abort
4776 */
4777 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4778 ioasc = 0;
4779 ipr_trace;
4780 }
4781
4782 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4783 if (!ipr_is_naca_model(res))
4784 res->needs_sync_complete = 1;
4785
4786 LEAVE;
4787 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4788 }
4789
4790 /**
4791 * ipr_eh_abort - Abort a single op
4792 * @scsi_cmd: scsi command struct
4793 *
4794 * Return value:
4795 * SUCCESS / FAILED
4796 **/
4797 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4798 {
4799 unsigned long flags;
4800 int rc;
4801
4802 ENTER;
4803
4804 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4805 rc = ipr_cancel_op(scsi_cmd);
4806 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4807
4808 LEAVE;
4809 return rc;
4810 }
4811
4812 /**
4813 * ipr_handle_other_interrupt - Handle "other" interrupts
4814 * @ioa_cfg: ioa config struct
4815 * @int_reg: interrupt register
4816 *
4817 * Return value:
4818 * IRQ_NONE / IRQ_HANDLED
4819 **/
4820 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4821 volatile u32 int_reg)
4822 {
4823 irqreturn_t rc = IRQ_HANDLED;
4824
4825 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4826 /* Mask the interrupt */
4827 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4828
4829 /* Clear the interrupt */
4830 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4831 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4832
4833 list_del(&ioa_cfg->reset_cmd->queue);
4834 del_timer(&ioa_cfg->reset_cmd->timer);
4835 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4836 } else {
4837 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4838 ioa_cfg->ioa_unit_checked = 1;
4839 else
4840 dev_err(&ioa_cfg->pdev->dev,
4841 "Permanent IOA failure. 0x%08X\n", int_reg);
4842
4843 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4844 ioa_cfg->sdt_state = GET_DUMP;
4845
4846 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4847 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4848 }
4849
4850 return rc;
4851 }
4852
4853 /**
4854 * ipr_isr_eh - Interrupt service routine error handler
4855 * @ioa_cfg: ioa config struct
4856 * @msg: message to log
4857 *
4858 * Return value:
4859 * none
4860 **/
4861 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
4862 {
4863 ioa_cfg->errors_logged++;
4864 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
4865
4866 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4867 ioa_cfg->sdt_state = GET_DUMP;
4868
4869 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4870 }
4871
4872 /**
4873 * ipr_isr - Interrupt service routine
4874 * @irq: irq number
4875 * @devp: pointer to ioa config struct
4876 *
4877 * Return value:
4878 * IRQ_NONE / IRQ_HANDLED
4879 **/
4880 static irqreturn_t ipr_isr(int irq, void *devp)
4881 {
4882 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4883 unsigned long lock_flags = 0;
4884 volatile u32 int_reg, int_mask_reg;
4885 u32 ioasc;
4886 u16 cmd_index;
4887 int num_hrrq = 0;
4888 struct ipr_cmnd *ipr_cmd;
4889 irqreturn_t rc = IRQ_NONE;
4890
4891 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4892
4893 /* If interrupts are disabled, ignore the interrupt */
4894 if (!ioa_cfg->allow_interrupts) {
4895 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4896 return IRQ_NONE;
4897 }
4898
4899 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
4900 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
4901
4902 /* If an interrupt on the adapter did not occur, ignore it.
4903 * Or in the case of SIS 64, check for a stage change interrupt.
4904 */
4905 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4906 if (ioa_cfg->sis64) {
4907 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4908 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4909 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
4910
4911 /* clear stage change */
4912 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
4913 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4914 list_del(&ioa_cfg->reset_cmd->queue);
4915 del_timer(&ioa_cfg->reset_cmd->timer);
4916 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4917 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4918 return IRQ_HANDLED;
4919 }
4920 }
4921
4922 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4923 return IRQ_NONE;
4924 }
4925
4926 while (1) {
4927 ipr_cmd = NULL;
4928
4929 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4930 ioa_cfg->toggle_bit) {
4931
4932 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4933 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4934
4935 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4936 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
4937 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4938 return IRQ_HANDLED;
4939 }
4940
4941 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4942
4943 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4944
4945 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4946
4947 list_del(&ipr_cmd->queue);
4948 del_timer(&ipr_cmd->timer);
4949 ipr_cmd->done(ipr_cmd);
4950
4951 rc = IRQ_HANDLED;
4952
4953 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4954 ioa_cfg->hrrq_curr++;
4955 } else {
4956 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4957 ioa_cfg->toggle_bit ^= 1u;
4958 }
4959 }
4960
4961 if (ipr_cmd != NULL) {
4962 /* Clear the PCI interrupt */
4963 do {
4964 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
4965 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
4966 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
4967 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
4968
4969 if (int_reg & IPR_PCII_HRRQ_UPDATED) {
4970 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
4971 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4972 return IRQ_HANDLED;
4973 }
4974
4975 } else
4976 break;
4977 }
4978
4979 if (unlikely(rc == IRQ_NONE))
4980 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4981
4982 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4983 return rc;
4984 }
4985
4986 /**
4987 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
4988 * @ioa_cfg: ioa config struct
4989 * @ipr_cmd: ipr command struct
4990 *
4991 * Return value:
4992 * 0 on success / -1 on failure
4993 **/
4994 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
4995 struct ipr_cmnd *ipr_cmd)
4996 {
4997 int i, nseg;
4998 struct scatterlist *sg;
4999 u32 length;
5000 u32 ioadl_flags = 0;
5001 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5002 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5003 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5004
5005 length = scsi_bufflen(scsi_cmd);
5006 if (!length)
5007 return 0;
5008
5009 nseg = scsi_dma_map(scsi_cmd);
5010 if (nseg < 0) {
5011 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5012 return -1;
5013 }
5014
5015 ipr_cmd->dma_use_sg = nseg;
5016
5017 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5018 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5019 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5020 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5021 ioadl_flags = IPR_IOADL_FLAGS_READ;
5022
5023 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5024 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5025 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5026 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5027 }
5028
5029 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5030 return 0;
5031 }
5032
5033 /**
5034 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5035 * @ioa_cfg: ioa config struct
5036 * @ipr_cmd: ipr command struct
5037 *
5038 * Return value:
5039 * 0 on success / -1 on failure
5040 **/
5041 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5042 struct ipr_cmnd *ipr_cmd)
5043 {
5044 int i, nseg;
5045 struct scatterlist *sg;
5046 u32 length;
5047 u32 ioadl_flags = 0;
5048 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5049 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5050 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5051
5052 length = scsi_bufflen(scsi_cmd);
5053 if (!length)
5054 return 0;
5055
5056 nseg = scsi_dma_map(scsi_cmd);
5057 if (nseg < 0) {
5058 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5059 return -1;
5060 }
5061
5062 ipr_cmd->dma_use_sg = nseg;
5063
5064 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5065 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5066 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5067 ioarcb->data_transfer_length = cpu_to_be32(length);
5068 ioarcb->ioadl_len =
5069 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5070 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5071 ioadl_flags = IPR_IOADL_FLAGS_READ;
5072 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5073 ioarcb->read_ioadl_len =
5074 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5075 }
5076
5077 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5078 ioadl = ioarcb->u.add_data.u.ioadl;
5079 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5080 offsetof(struct ipr_ioarcb, u.add_data));
5081 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5082 }
5083
5084 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5085 ioadl[i].flags_and_data_len =
5086 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5087 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5088 }
5089
5090 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5091 return 0;
5092 }
5093
5094 /**
5095 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5096 * @scsi_cmd: scsi command struct
5097 *
5098 * Return value:
5099 * task attributes
5100 **/
5101 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5102 {
5103 u8 tag[2];
5104 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5105
5106 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5107 switch (tag[0]) {
5108 case MSG_SIMPLE_TAG:
5109 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5110 break;
5111 case MSG_HEAD_TAG:
5112 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5113 break;
5114 case MSG_ORDERED_TAG:
5115 rc = IPR_FLAGS_LO_ORDERED_TASK;
5116 break;
5117 };
5118 }
5119
5120 return rc;
5121 }
5122
5123 /**
5124 * ipr_erp_done - Process completion of ERP for a device
5125 * @ipr_cmd: ipr command struct
5126 *
5127 * This function copies the sense buffer into the scsi_cmd
5128 * struct and pushes the scsi_done function.
5129 *
5130 * Return value:
5131 * nothing
5132 **/
5133 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5134 {
5135 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5136 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5137 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5138 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5139
5140 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5141 scsi_cmd->result |= (DID_ERROR << 16);
5142 scmd_printk(KERN_ERR, scsi_cmd,
5143 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5144 } else {
5145 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5146 SCSI_SENSE_BUFFERSIZE);
5147 }
5148
5149 if (res) {
5150 if (!ipr_is_naca_model(res))
5151 res->needs_sync_complete = 1;
5152 res->in_erp = 0;
5153 }
5154 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5155 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5156 scsi_cmd->scsi_done(scsi_cmd);
5157 }
5158
5159 /**
5160 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5161 * @ipr_cmd: ipr command struct
5162 *
5163 * Return value:
5164 * none
5165 **/
5166 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5167 {
5168 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5169 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
5170 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5171
5172 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5173 ioarcb->data_transfer_length = 0;
5174 ioarcb->read_data_transfer_length = 0;
5175 ioarcb->ioadl_len = 0;
5176 ioarcb->read_ioadl_len = 0;
5177 ioasa->ioasc = 0;
5178 ioasa->residual_data_len = 0;
5179
5180 if (ipr_cmd->ioa_cfg->sis64)
5181 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5182 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5183 else {
5184 ioarcb->write_ioadl_addr =
5185 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5186 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5187 }
5188 }
5189
5190 /**
5191 * ipr_erp_request_sense - Send request sense to a device
5192 * @ipr_cmd: ipr command struct
5193 *
5194 * This function sends a request sense to a device as a result
5195 * of a check condition.
5196 *
5197 * Return value:
5198 * nothing
5199 **/
5200 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5201 {
5202 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5203 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5204
5205 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5206 ipr_erp_done(ipr_cmd);
5207 return;
5208 }
5209
5210 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5211
5212 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5213 cmd_pkt->cdb[0] = REQUEST_SENSE;
5214 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5215 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5216 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5217 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5218
5219 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5220 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5221
5222 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5223 IPR_REQUEST_SENSE_TIMEOUT * 2);
5224 }
5225
5226 /**
5227 * ipr_erp_cancel_all - Send cancel all to a device
5228 * @ipr_cmd: ipr command struct
5229 *
5230 * This function sends a cancel all to a device to clear the
5231 * queue. If we are running TCQ on the device, QERR is set to 1,
5232 * which means all outstanding ops have been dropped on the floor.
5233 * Cancel all will return them to us.
5234 *
5235 * Return value:
5236 * nothing
5237 **/
5238 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5239 {
5240 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5241 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5242 struct ipr_cmd_pkt *cmd_pkt;
5243
5244 res->in_erp = 1;
5245
5246 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5247
5248 if (!scsi_get_tag_type(scsi_cmd->device)) {
5249 ipr_erp_request_sense(ipr_cmd);
5250 return;
5251 }
5252
5253 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5254 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5255 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5256
5257 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5258 IPR_CANCEL_ALL_TIMEOUT);
5259 }
5260
5261 /**
5262 * ipr_dump_ioasa - Dump contents of IOASA
5263 * @ioa_cfg: ioa config struct
5264 * @ipr_cmd: ipr command struct
5265 * @res: resource entry struct
5266 *
5267 * This function is invoked by the interrupt handler when ops
5268 * fail. It will log the IOASA if appropriate. Only called
5269 * for GPDD ops.
5270 *
5271 * Return value:
5272 * none
5273 **/
5274 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5275 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5276 {
5277 int i;
5278 u16 data_len;
5279 u32 ioasc, fd_ioasc;
5280 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
5281 __be32 *ioasa_data = (__be32 *)ioasa;
5282 int error_index;
5283
5284 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
5285 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
5286
5287 if (0 == ioasc)
5288 return;
5289
5290 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5291 return;
5292
5293 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5294 error_index = ipr_get_error(fd_ioasc);
5295 else
5296 error_index = ipr_get_error(ioasc);
5297
5298 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5299 /* Don't log an error if the IOA already logged one */
5300 if (ioasa->ilid != 0)
5301 return;
5302
5303 if (!ipr_is_gscsi(res))
5304 return;
5305
5306 if (ipr_error_table[error_index].log_ioasa == 0)
5307 return;
5308 }
5309
5310 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5311
5312 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
5313 data_len = sizeof(struct ipr_ioasa);
5314 else
5315 data_len = be16_to_cpu(ioasa->ret_stat_len);
5316
5317 ipr_err("IOASA Dump:\n");
5318
5319 for (i = 0; i < data_len / 4; i += 4) {
5320 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5321 be32_to_cpu(ioasa_data[i]),
5322 be32_to_cpu(ioasa_data[i+1]),
5323 be32_to_cpu(ioasa_data[i+2]),
5324 be32_to_cpu(ioasa_data[i+3]));
5325 }
5326 }
5327
5328 /**
5329 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5330 * @ioasa: IOASA
5331 * @sense_buf: sense data buffer
5332 *
5333 * Return value:
5334 * none
5335 **/
5336 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5337 {
5338 u32 failing_lba;
5339 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5340 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5341 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
5342 u32 ioasc = be32_to_cpu(ioasa->ioasc);
5343
5344 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5345
5346 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5347 return;
5348
5349 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5350
5351 if (ipr_is_vset_device(res) &&
5352 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5353 ioasa->u.vset.failing_lba_hi != 0) {
5354 sense_buf[0] = 0x72;
5355 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5356 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5357 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5358
5359 sense_buf[7] = 12;
5360 sense_buf[8] = 0;
5361 sense_buf[9] = 0x0A;
5362 sense_buf[10] = 0x80;
5363
5364 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5365
5366 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5367 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5368 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5369 sense_buf[15] = failing_lba & 0x000000ff;
5370
5371 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5372
5373 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5374 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5375 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5376 sense_buf[19] = failing_lba & 0x000000ff;
5377 } else {
5378 sense_buf[0] = 0x70;
5379 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5380 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5381 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5382
5383 /* Illegal request */
5384 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
5385 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
5386 sense_buf[7] = 10; /* additional length */
5387
5388 /* IOARCB was in error */
5389 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5390 sense_buf[15] = 0xC0;
5391 else /* Parameter data was invalid */
5392 sense_buf[15] = 0x80;
5393
5394 sense_buf[16] =
5395 ((IPR_FIELD_POINTER_MASK &
5396 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
5397 sense_buf[17] =
5398 (IPR_FIELD_POINTER_MASK &
5399 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
5400 } else {
5401 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5402 if (ipr_is_vset_device(res))
5403 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5404 else
5405 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5406
5407 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5408 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5409 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5410 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5411 sense_buf[6] = failing_lba & 0x000000ff;
5412 }
5413
5414 sense_buf[7] = 6; /* additional length */
5415 }
5416 }
5417 }
5418
5419 /**
5420 * ipr_get_autosense - Copy autosense data to sense buffer
5421 * @ipr_cmd: ipr command struct
5422 *
5423 * This function copies the autosense buffer to the buffer
5424 * in the scsi_cmd, if there is autosense available.
5425 *
5426 * Return value:
5427 * 1 if autosense was available / 0 if not
5428 **/
5429 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5430 {
5431 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
5432
5433 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
5434 return 0;
5435
5436 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5437 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5438 SCSI_SENSE_BUFFERSIZE));
5439 return 1;
5440 }
5441
5442 /**
5443 * ipr_erp_start - Process an error response for a SCSI op
5444 * @ioa_cfg: ioa config struct
5445 * @ipr_cmd: ipr command struct
5446 *
5447 * This function determines whether or not to initiate ERP
5448 * on the affected device.
5449 *
5450 * Return value:
5451 * nothing
5452 **/
5453 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5454 struct ipr_cmnd *ipr_cmd)
5455 {
5456 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5457 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5458 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5459 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
5460
5461 if (!res) {
5462 ipr_scsi_eh_done(ipr_cmd);
5463 return;
5464 }
5465
5466 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
5467 ipr_gen_sense(ipr_cmd);
5468
5469 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5470
5471 switch (masked_ioasc) {
5472 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
5473 if (ipr_is_naca_model(res))
5474 scsi_cmd->result |= (DID_ABORT << 16);
5475 else
5476 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5477 break;
5478 case IPR_IOASC_IR_RESOURCE_HANDLE:
5479 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
5480 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5481 break;
5482 case IPR_IOASC_HW_SEL_TIMEOUT:
5483 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5484 if (!ipr_is_naca_model(res))
5485 res->needs_sync_complete = 1;
5486 break;
5487 case IPR_IOASC_SYNC_REQUIRED:
5488 if (!res->in_erp)
5489 res->needs_sync_complete = 1;
5490 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5491 break;
5492 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
5493 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
5494 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5495 break;
5496 case IPR_IOASC_BUS_WAS_RESET:
5497 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5498 /*
5499 * Report the bus reset and ask for a retry. The device
5500 * will give CC/UA the next command.
5501 */
5502 if (!res->resetting_device)
5503 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
5504 scsi_cmd->result |= (DID_ERROR << 16);
5505 if (!ipr_is_naca_model(res))
5506 res->needs_sync_complete = 1;
5507 break;
5508 case IPR_IOASC_HW_DEV_BUS_STATUS:
5509 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
5510 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
5511 if (!ipr_get_autosense(ipr_cmd)) {
5512 if (!ipr_is_naca_model(res)) {
5513 ipr_erp_cancel_all(ipr_cmd);
5514 return;
5515 }
5516 }
5517 }
5518 if (!ipr_is_naca_model(res))
5519 res->needs_sync_complete = 1;
5520 break;
5521 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
5522 break;
5523 default:
5524 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5525 scsi_cmd->result |= (DID_ERROR << 16);
5526 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
5527 res->needs_sync_complete = 1;
5528 break;
5529 }
5530
5531 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5532 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5533 scsi_cmd->scsi_done(scsi_cmd);
5534 }
5535
5536 /**
5537 * ipr_scsi_done - mid-layer done function
5538 * @ipr_cmd: ipr command struct
5539 *
5540 * This function is invoked by the interrupt handler for
5541 * ops generated by the SCSI mid-layer
5542 *
5543 * Return value:
5544 * none
5545 **/
5546 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
5547 {
5548 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5549 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5550 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5551
5552 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
5553
5554 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
5555 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5556 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5557 scsi_cmd->scsi_done(scsi_cmd);
5558 } else
5559 ipr_erp_start(ioa_cfg, ipr_cmd);
5560 }
5561
5562 /**
5563 * ipr_queuecommand - Queue a mid-layer request
5564 * @scsi_cmd: scsi command struct
5565 * @done: done function
5566 *
5567 * This function queues a request generated by the mid-layer.
5568 *
5569 * Return value:
5570 * 0 on success
5571 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
5572 * SCSI_MLQUEUE_HOST_BUSY if host is busy
5573 **/
5574 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
5575 void (*done) (struct scsi_cmnd *))
5576 {
5577 struct ipr_ioa_cfg *ioa_cfg;
5578 struct ipr_resource_entry *res;
5579 struct ipr_ioarcb *ioarcb;
5580 struct ipr_cmnd *ipr_cmd;
5581 int rc = 0;
5582
5583 scsi_cmd->scsi_done = done;
5584 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5585 res = scsi_cmd->device->hostdata;
5586 scsi_cmd->result = (DID_OK << 16);
5587
5588 /*
5589 * We are currently blocking all devices due to a host reset
5590 * We have told the host to stop giving us new requests, but
5591 * ERP ops don't count. FIXME
5592 */
5593 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
5594 return SCSI_MLQUEUE_HOST_BUSY;
5595
5596 /*
5597 * FIXME - Create scsi_set_host_offline interface
5598 * and the ioa_is_dead check can be removed
5599 */
5600 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
5601 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
5602 scsi_cmd->result = (DID_NO_CONNECT << 16);
5603 scsi_cmd->scsi_done(scsi_cmd);
5604 return 0;
5605 }
5606
5607 if (ipr_is_gata(res) && res->sata_port)
5608 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
5609
5610 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5611 ioarcb = &ipr_cmd->ioarcb;
5612 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5613
5614 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
5615 ipr_cmd->scsi_cmd = scsi_cmd;
5616 ioarcb->res_handle = res->res_handle;
5617 ipr_cmd->done = ipr_scsi_done;
5618 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
5619
5620 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
5621 if (scsi_cmd->underflow == 0)
5622 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5623
5624 if (res->needs_sync_complete) {
5625 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
5626 res->needs_sync_complete = 0;
5627 }
5628
5629 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5630 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
5631 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
5632 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
5633 }
5634
5635 if (scsi_cmd->cmnd[0] >= 0xC0 &&
5636 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
5637 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5638
5639 if (likely(rc == 0)) {
5640 if (ioa_cfg->sis64)
5641 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
5642 else
5643 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
5644 }
5645
5646 if (likely(rc == 0)) {
5647 mb();
5648 ipr_send_command(ipr_cmd);
5649 } else {
5650 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5651 return SCSI_MLQUEUE_HOST_BUSY;
5652 }
5653
5654 return 0;
5655 }
5656
5657 /**
5658 * ipr_ioctl - IOCTL handler
5659 * @sdev: scsi device struct
5660 * @cmd: IOCTL cmd
5661 * @arg: IOCTL arg
5662 *
5663 * Return value:
5664 * 0 on success / other on failure
5665 **/
5666 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5667 {
5668 struct ipr_resource_entry *res;
5669
5670 res = (struct ipr_resource_entry *)sdev->hostdata;
5671 if (res && ipr_is_gata(res)) {
5672 if (cmd == HDIO_GET_IDENTITY)
5673 return -ENOTTY;
5674 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
5675 }
5676
5677 return -EINVAL;
5678 }
5679
5680 /**
5681 * ipr_info - Get information about the card/driver
5682 * @scsi_host: scsi host struct
5683 *
5684 * Return value:
5685 * pointer to buffer with description string
5686 **/
5687 static const char * ipr_ioa_info(struct Scsi_Host *host)
5688 {
5689 static char buffer[512];
5690 struct ipr_ioa_cfg *ioa_cfg;
5691 unsigned long lock_flags = 0;
5692
5693 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
5694
5695 spin_lock_irqsave(host->host_lock, lock_flags);
5696 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
5697 spin_unlock_irqrestore(host->host_lock, lock_flags);
5698
5699 return buffer;
5700 }
5701
5702 static struct scsi_host_template driver_template = {
5703 .module = THIS_MODULE,
5704 .name = "IPR",
5705 .info = ipr_ioa_info,
5706 .ioctl = ipr_ioctl,
5707 .queuecommand = ipr_queuecommand,
5708 .eh_abort_handler = ipr_eh_abort,
5709 .eh_device_reset_handler = ipr_eh_dev_reset,
5710 .eh_host_reset_handler = ipr_eh_host_reset,
5711 .slave_alloc = ipr_slave_alloc,
5712 .slave_configure = ipr_slave_configure,
5713 .slave_destroy = ipr_slave_destroy,
5714 .target_alloc = ipr_target_alloc,
5715 .target_destroy = ipr_target_destroy,
5716 .change_queue_depth = ipr_change_queue_depth,
5717 .change_queue_type = ipr_change_queue_type,
5718 .bios_param = ipr_biosparam,
5719 .can_queue = IPR_MAX_COMMANDS,
5720 .this_id = -1,
5721 .sg_tablesize = IPR_MAX_SGLIST,
5722 .max_sectors = IPR_IOA_MAX_SECTORS,
5723 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5724 .use_clustering = ENABLE_CLUSTERING,
5725 .shost_attrs = ipr_ioa_attrs,
5726 .sdev_attrs = ipr_dev_attrs,
5727 .proc_name = IPR_NAME
5728 };
5729
5730 /**
5731 * ipr_ata_phy_reset - libata phy_reset handler
5732 * @ap: ata port to reset
5733 *
5734 **/
5735 static void ipr_ata_phy_reset(struct ata_port *ap)
5736 {
5737 unsigned long flags;
5738 struct ipr_sata_port *sata_port = ap->private_data;
5739 struct ipr_resource_entry *res = sata_port->res;
5740 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5741 int rc;
5742
5743 ENTER;
5744 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5745 while(ioa_cfg->in_reset_reload) {
5746 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5747 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5748 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5749 }
5750
5751 if (!ioa_cfg->allow_cmds)
5752 goto out_unlock;
5753
5754 rc = ipr_device_reset(ioa_cfg, res);
5755
5756 if (rc) {
5757 ap->link.device[0].class = ATA_DEV_NONE;
5758 goto out_unlock;
5759 }
5760
5761 ap->link.device[0].class = res->ata_class;
5762 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
5763 ap->link.device[0].class = ATA_DEV_NONE;
5764
5765 out_unlock:
5766 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5767 LEAVE;
5768 }
5769
5770 /**
5771 * ipr_ata_post_internal - Cleanup after an internal command
5772 * @qc: ATA queued command
5773 *
5774 * Return value:
5775 * none
5776 **/
5777 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5778 {
5779 struct ipr_sata_port *sata_port = qc->ap->private_data;
5780 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5781 struct ipr_cmnd *ipr_cmd;
5782 unsigned long flags;
5783
5784 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5785 while(ioa_cfg->in_reset_reload) {
5786 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5787 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5788 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5789 }
5790
5791 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5792 if (ipr_cmd->qc == qc) {
5793 ipr_device_reset(ioa_cfg, sata_port->res);
5794 break;
5795 }
5796 }
5797 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5798 }
5799
5800 /**
5801 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5802 * @regs: destination
5803 * @tf: source ATA taskfile
5804 *
5805 * Return value:
5806 * none
5807 **/
5808 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5809 struct ata_taskfile *tf)
5810 {
5811 regs->feature = tf->feature;
5812 regs->nsect = tf->nsect;
5813 regs->lbal = tf->lbal;
5814 regs->lbam = tf->lbam;
5815 regs->lbah = tf->lbah;
5816 regs->device = tf->device;
5817 regs->command = tf->command;
5818 regs->hob_feature = tf->hob_feature;
5819 regs->hob_nsect = tf->hob_nsect;
5820 regs->hob_lbal = tf->hob_lbal;
5821 regs->hob_lbam = tf->hob_lbam;
5822 regs->hob_lbah = tf->hob_lbah;
5823 regs->ctl = tf->ctl;
5824 }
5825
5826 /**
5827 * ipr_sata_done - done function for SATA commands
5828 * @ipr_cmd: ipr command struct
5829 *
5830 * This function is invoked by the interrupt handler for
5831 * ops generated by the SCSI mid-layer to SATA devices
5832 *
5833 * Return value:
5834 * none
5835 **/
5836 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5837 {
5838 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5839 struct ata_queued_cmd *qc = ipr_cmd->qc;
5840 struct ipr_sata_port *sata_port = qc->ap->private_data;
5841 struct ipr_resource_entry *res = sata_port->res;
5842 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5843
5844 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5845 sizeof(struct ipr_ioasa_gata));
5846 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5847
5848 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5849 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
5850
5851 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5852 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5853 else
5854 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5855 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5856 ata_qc_complete(qc);
5857 }
5858
5859 /**
5860 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
5861 * @ipr_cmd: ipr command struct
5862 * @qc: ATA queued command
5863 *
5864 **/
5865 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
5866 struct ata_queued_cmd *qc)
5867 {
5868 u32 ioadl_flags = 0;
5869 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5870 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5871 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
5872 int len = qc->nbytes;
5873 struct scatterlist *sg;
5874 unsigned int si;
5875 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5876
5877 if (len == 0)
5878 return;
5879
5880 if (qc->dma_dir == DMA_TO_DEVICE) {
5881 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5882 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5883 } else if (qc->dma_dir == DMA_FROM_DEVICE)
5884 ioadl_flags = IPR_IOADL_FLAGS_READ;
5885
5886 ioarcb->data_transfer_length = cpu_to_be32(len);
5887 ioarcb->ioadl_len =
5888 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5889 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5890 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
5891
5892 for_each_sg(qc->sg, sg, qc->n_elem, si) {
5893 ioadl64->flags = cpu_to_be32(ioadl_flags);
5894 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
5895 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
5896
5897 last_ioadl64 = ioadl64;
5898 ioadl64++;
5899 }
5900
5901 if (likely(last_ioadl64))
5902 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5903 }
5904
5905 /**
5906 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5907 * @ipr_cmd: ipr command struct
5908 * @qc: ATA queued command
5909 *
5910 **/
5911 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5912 struct ata_queued_cmd *qc)
5913 {
5914 u32 ioadl_flags = 0;
5915 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5916 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5917 struct ipr_ioadl_desc *last_ioadl = NULL;
5918 int len = qc->nbytes;
5919 struct scatterlist *sg;
5920 unsigned int si;
5921
5922 if (len == 0)
5923 return;
5924
5925 if (qc->dma_dir == DMA_TO_DEVICE) {
5926 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5927 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5928 ioarcb->data_transfer_length = cpu_to_be32(len);
5929 ioarcb->ioadl_len =
5930 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5931 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5932 ioadl_flags = IPR_IOADL_FLAGS_READ;
5933 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5934 ioarcb->read_ioadl_len =
5935 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5936 }
5937
5938 for_each_sg(qc->sg, sg, qc->n_elem, si) {
5939 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5940 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5941
5942 last_ioadl = ioadl;
5943 ioadl++;
5944 }
5945
5946 if (likely(last_ioadl))
5947 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5948 }
5949
5950 /**
5951 * ipr_qc_issue - Issue a SATA qc to a device
5952 * @qc: queued command
5953 *
5954 * Return value:
5955 * 0 if success
5956 **/
5957 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5958 {
5959 struct ata_port *ap = qc->ap;
5960 struct ipr_sata_port *sata_port = ap->private_data;
5961 struct ipr_resource_entry *res = sata_port->res;
5962 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5963 struct ipr_cmnd *ipr_cmd;
5964 struct ipr_ioarcb *ioarcb;
5965 struct ipr_ioarcb_ata_regs *regs;
5966
5967 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5968 return AC_ERR_SYSTEM;
5969
5970 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5971 ioarcb = &ipr_cmd->ioarcb;
5972
5973 if (ioa_cfg->sis64) {
5974 regs = &ipr_cmd->i.ata_ioadl.regs;
5975 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5976 } else
5977 regs = &ioarcb->u.add_data.u.regs;
5978
5979 memset(regs, 0, sizeof(*regs));
5980 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
5981
5982 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5983 ipr_cmd->qc = qc;
5984 ipr_cmd->done = ipr_sata_done;
5985 ipr_cmd->ioarcb.res_handle = res->res_handle;
5986 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5987 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5988 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5989 ipr_cmd->dma_use_sg = qc->n_elem;
5990
5991 if (ioa_cfg->sis64)
5992 ipr_build_ata_ioadl64(ipr_cmd, qc);
5993 else
5994 ipr_build_ata_ioadl(ipr_cmd, qc);
5995
5996 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5997 ipr_copy_sata_tf(regs, &qc->tf);
5998 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5999 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6000
6001 switch (qc->tf.protocol) {
6002 case ATA_PROT_NODATA:
6003 case ATA_PROT_PIO:
6004 break;
6005
6006 case ATA_PROT_DMA:
6007 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6008 break;
6009
6010 case ATAPI_PROT_PIO:
6011 case ATAPI_PROT_NODATA:
6012 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6013 break;
6014
6015 case ATAPI_PROT_DMA:
6016 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6017 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6018 break;
6019
6020 default:
6021 WARN_ON(1);
6022 return AC_ERR_INVALID;
6023 }
6024
6025 mb();
6026
6027 ipr_send_command(ipr_cmd);
6028
6029 return 0;
6030 }
6031
6032 /**
6033 * ipr_qc_fill_rtf - Read result TF
6034 * @qc: ATA queued command
6035 *
6036 * Return value:
6037 * true
6038 **/
6039 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6040 {
6041 struct ipr_sata_port *sata_port = qc->ap->private_data;
6042 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6043 struct ata_taskfile *tf = &qc->result_tf;
6044
6045 tf->feature = g->error;
6046 tf->nsect = g->nsect;
6047 tf->lbal = g->lbal;
6048 tf->lbam = g->lbam;
6049 tf->lbah = g->lbah;
6050 tf->device = g->device;
6051 tf->command = g->status;
6052 tf->hob_nsect = g->hob_nsect;
6053 tf->hob_lbal = g->hob_lbal;
6054 tf->hob_lbam = g->hob_lbam;
6055 tf->hob_lbah = g->hob_lbah;
6056 tf->ctl = g->alt_status;
6057
6058 return true;
6059 }
6060
6061 static struct ata_port_operations ipr_sata_ops = {
6062 .phy_reset = ipr_ata_phy_reset,
6063 .hardreset = ipr_sata_reset,
6064 .post_internal_cmd = ipr_ata_post_internal,
6065 .qc_prep = ata_noop_qc_prep,
6066 .qc_issue = ipr_qc_issue,
6067 .qc_fill_rtf = ipr_qc_fill_rtf,
6068 .port_start = ata_sas_port_start,
6069 .port_stop = ata_sas_port_stop
6070 };
6071
6072 static struct ata_port_info sata_port_info = {
6073 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
6074 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
6075 .pio_mask = 0x10, /* pio4 */
6076 .mwdma_mask = 0x07,
6077 .udma_mask = 0x7f, /* udma0-6 */
6078 .port_ops = &ipr_sata_ops
6079 };
6080
6081 #ifdef CONFIG_PPC_PSERIES
6082 static const u16 ipr_blocked_processors[] = {
6083 PV_NORTHSTAR,
6084 PV_PULSAR,
6085 PV_POWER4,
6086 PV_ICESTAR,
6087 PV_SSTAR,
6088 PV_POWER4p,
6089 PV_630,
6090 PV_630p
6091 };
6092
6093 /**
6094 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6095 * @ioa_cfg: ioa cfg struct
6096 *
6097 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6098 * certain pSeries hardware. This function determines if the given
6099 * adapter is in one of these confgurations or not.
6100 *
6101 * Return value:
6102 * 1 if adapter is not supported / 0 if adapter is supported
6103 **/
6104 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6105 {
6106 int i;
6107
6108 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6109 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
6110 if (__is_processor(ipr_blocked_processors[i]))
6111 return 1;
6112 }
6113 }
6114 return 0;
6115 }
6116 #else
6117 #define ipr_invalid_adapter(ioa_cfg) 0
6118 #endif
6119
6120 /**
6121 * ipr_ioa_bringdown_done - IOA bring down completion.
6122 * @ipr_cmd: ipr command struct
6123 *
6124 * This function processes the completion of an adapter bring down.
6125 * It wakes any reset sleepers.
6126 *
6127 * Return value:
6128 * IPR_RC_JOB_RETURN
6129 **/
6130 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6131 {
6132 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6133
6134 ENTER;
6135 ioa_cfg->in_reset_reload = 0;
6136 ioa_cfg->reset_retries = 0;
6137 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6138 wake_up_all(&ioa_cfg->reset_wait_q);
6139
6140 spin_unlock_irq(ioa_cfg->host->host_lock);
6141 scsi_unblock_requests(ioa_cfg->host);
6142 spin_lock_irq(ioa_cfg->host->host_lock);
6143 LEAVE;
6144
6145 return IPR_RC_JOB_RETURN;
6146 }
6147
6148 /**
6149 * ipr_ioa_reset_done - IOA reset completion.
6150 * @ipr_cmd: ipr command struct
6151 *
6152 * This function processes the completion of an adapter reset.
6153 * It schedules any necessary mid-layer add/removes and
6154 * wakes any reset sleepers.
6155 *
6156 * Return value:
6157 * IPR_RC_JOB_RETURN
6158 **/
6159 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6160 {
6161 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6162 struct ipr_resource_entry *res;
6163 struct ipr_hostrcb *hostrcb, *temp;
6164 int i = 0;
6165
6166 ENTER;
6167 ioa_cfg->in_reset_reload = 0;
6168 ioa_cfg->allow_cmds = 1;
6169 ioa_cfg->reset_cmd = NULL;
6170 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6171
6172 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6173 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6174 ipr_trace;
6175 break;
6176 }
6177 }
6178 schedule_work(&ioa_cfg->work_q);
6179
6180 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6181 list_del(&hostrcb->queue);
6182 if (i++ < IPR_NUM_LOG_HCAMS)
6183 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6184 else
6185 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6186 }
6187
6188 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6189 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6190
6191 ioa_cfg->reset_retries = 0;
6192 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6193 wake_up_all(&ioa_cfg->reset_wait_q);
6194
6195 spin_unlock(ioa_cfg->host->host_lock);
6196 scsi_unblock_requests(ioa_cfg->host);
6197 spin_lock(ioa_cfg->host->host_lock);
6198
6199 if (!ioa_cfg->allow_cmds)
6200 scsi_block_requests(ioa_cfg->host);
6201
6202 LEAVE;
6203 return IPR_RC_JOB_RETURN;
6204 }
6205
6206 /**
6207 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6208 * @supported_dev: supported device struct
6209 * @vpids: vendor product id struct
6210 *
6211 * Return value:
6212 * none
6213 **/
6214 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6215 struct ipr_std_inq_vpids *vpids)
6216 {
6217 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6218 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6219 supported_dev->num_records = 1;
6220 supported_dev->data_length =
6221 cpu_to_be16(sizeof(struct ipr_supported_device));
6222 supported_dev->reserved = 0;
6223 }
6224
6225 /**
6226 * ipr_set_supported_devs - Send Set Supported Devices for a device
6227 * @ipr_cmd: ipr command struct
6228 *
6229 * This function sends a Set Supported Devices to the adapter
6230 *
6231 * Return value:
6232 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6233 **/
6234 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6235 {
6236 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6237 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6238 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6239 struct ipr_resource_entry *res = ipr_cmd->u.res;
6240
6241 ipr_cmd->job_step = ipr_ioa_reset_done;
6242
6243 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6244 if (!ipr_is_scsi_disk(res))
6245 continue;
6246
6247 ipr_cmd->u.res = res;
6248 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6249
6250 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6251 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6252 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6253
6254 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6255 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6256 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6257 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6258
6259 ipr_init_ioadl(ipr_cmd,
6260 ioa_cfg->vpd_cbs_dma +
6261 offsetof(struct ipr_misc_cbs, supp_dev),
6262 sizeof(struct ipr_supported_device),
6263 IPR_IOADL_FLAGS_WRITE_LAST);
6264
6265 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6266 IPR_SET_SUP_DEVICE_TIMEOUT);
6267
6268 if (!ioa_cfg->sis64)
6269 ipr_cmd->job_step = ipr_set_supported_devs;
6270 return IPR_RC_JOB_RETURN;
6271 }
6272
6273 return IPR_RC_JOB_CONTINUE;
6274 }
6275
6276 /**
6277 * ipr_get_mode_page - Locate specified mode page
6278 * @mode_pages: mode page buffer
6279 * @page_code: page code to find
6280 * @len: minimum required length for mode page
6281 *
6282 * Return value:
6283 * pointer to mode page / NULL on failure
6284 **/
6285 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6286 u32 page_code, u32 len)
6287 {
6288 struct ipr_mode_page_hdr *mode_hdr;
6289 u32 page_length;
6290 u32 length;
6291
6292 if (!mode_pages || (mode_pages->hdr.length == 0))
6293 return NULL;
6294
6295 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6296 mode_hdr = (struct ipr_mode_page_hdr *)
6297 (mode_pages->data + mode_pages->hdr.block_desc_len);
6298
6299 while (length) {
6300 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6301 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6302 return mode_hdr;
6303 break;
6304 } else {
6305 page_length = (sizeof(struct ipr_mode_page_hdr) +
6306 mode_hdr->page_length);
6307 length -= page_length;
6308 mode_hdr = (struct ipr_mode_page_hdr *)
6309 ((unsigned long)mode_hdr + page_length);
6310 }
6311 }
6312 return NULL;
6313 }
6314
6315 /**
6316 * ipr_check_term_power - Check for term power errors
6317 * @ioa_cfg: ioa config struct
6318 * @mode_pages: IOAFP mode pages buffer
6319 *
6320 * Check the IOAFP's mode page 28 for term power errors
6321 *
6322 * Return value:
6323 * nothing
6324 **/
6325 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6326 struct ipr_mode_pages *mode_pages)
6327 {
6328 int i;
6329 int entry_length;
6330 struct ipr_dev_bus_entry *bus;
6331 struct ipr_mode_page28 *mode_page;
6332
6333 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6334 sizeof(struct ipr_mode_page28));
6335
6336 entry_length = mode_page->entry_length;
6337
6338 bus = mode_page->bus;
6339
6340 for (i = 0; i < mode_page->num_entries; i++) {
6341 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6342 dev_err(&ioa_cfg->pdev->dev,
6343 "Term power is absent on scsi bus %d\n",
6344 bus->res_addr.bus);
6345 }
6346
6347 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6348 }
6349 }
6350
6351 /**
6352 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6353 * @ioa_cfg: ioa config struct
6354 *
6355 * Looks through the config table checking for SES devices. If
6356 * the SES device is in the SES table indicating a maximum SCSI
6357 * bus speed, the speed is limited for the bus.
6358 *
6359 * Return value:
6360 * none
6361 **/
6362 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6363 {
6364 u32 max_xfer_rate;
6365 int i;
6366
6367 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6368 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6369 ioa_cfg->bus_attr[i].bus_width);
6370
6371 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6372 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6373 }
6374 }
6375
6376 /**
6377 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6378 * @ioa_cfg: ioa config struct
6379 * @mode_pages: mode page 28 buffer
6380 *
6381 * Updates mode page 28 based on driver configuration
6382 *
6383 * Return value:
6384 * none
6385 **/
6386 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6387 struct ipr_mode_pages *mode_pages)
6388 {
6389 int i, entry_length;
6390 struct ipr_dev_bus_entry *bus;
6391 struct ipr_bus_attributes *bus_attr;
6392 struct ipr_mode_page28 *mode_page;
6393
6394 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6395 sizeof(struct ipr_mode_page28));
6396
6397 entry_length = mode_page->entry_length;
6398
6399 /* Loop for each device bus entry */
6400 for (i = 0, bus = mode_page->bus;
6401 i < mode_page->num_entries;
6402 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6403 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6404 dev_err(&ioa_cfg->pdev->dev,
6405 "Invalid resource address reported: 0x%08X\n",
6406 IPR_GET_PHYS_LOC(bus->res_addr));
6407 continue;
6408 }
6409
6410 bus_attr = &ioa_cfg->bus_attr[i];
6411 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6412 bus->bus_width = bus_attr->bus_width;
6413 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6414 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6415 if (bus_attr->qas_enabled)
6416 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6417 else
6418 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6419 }
6420 }
6421
6422 /**
6423 * ipr_build_mode_select - Build a mode select command
6424 * @ipr_cmd: ipr command struct
6425 * @res_handle: resource handle to send command to
6426 * @parm: Byte 2 of Mode Sense command
6427 * @dma_addr: DMA buffer address
6428 * @xfer_len: data transfer length
6429 *
6430 * Return value:
6431 * none
6432 **/
6433 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
6434 __be32 res_handle, u8 parm,
6435 dma_addr_t dma_addr, u8 xfer_len)
6436 {
6437 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6438
6439 ioarcb->res_handle = res_handle;
6440 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6441 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6442 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6443 ioarcb->cmd_pkt.cdb[1] = parm;
6444 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6445
6446 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
6447 }
6448
6449 /**
6450 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6451 * @ipr_cmd: ipr command struct
6452 *
6453 * This function sets up the SCSI bus attributes and sends
6454 * a Mode Select for Page 28 to activate them.
6455 *
6456 * Return value:
6457 * IPR_RC_JOB_RETURN
6458 **/
6459 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6460 {
6461 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6462 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6463 int length;
6464
6465 ENTER;
6466 ipr_scsi_bus_speed_limit(ioa_cfg);
6467 ipr_check_term_power(ioa_cfg, mode_pages);
6468 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6469 length = mode_pages->hdr.length + 1;
6470 mode_pages->hdr.length = 0;
6471
6472 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6473 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6474 length);
6475
6476 ipr_cmd->job_step = ipr_set_supported_devs;
6477 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6478 struct ipr_resource_entry, queue);
6479 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6480
6481 LEAVE;
6482 return IPR_RC_JOB_RETURN;
6483 }
6484
6485 /**
6486 * ipr_build_mode_sense - Builds a mode sense command
6487 * @ipr_cmd: ipr command struct
6488 * @res: resource entry struct
6489 * @parm: Byte 2 of mode sense command
6490 * @dma_addr: DMA address of mode sense buffer
6491 * @xfer_len: Size of DMA buffer
6492 *
6493 * Return value:
6494 * none
6495 **/
6496 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6497 __be32 res_handle,
6498 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
6499 {
6500 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6501
6502 ioarcb->res_handle = res_handle;
6503 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6504 ioarcb->cmd_pkt.cdb[2] = parm;
6505 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6506 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6507
6508 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6509 }
6510
6511 /**
6512 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6513 * @ipr_cmd: ipr command struct
6514 *
6515 * This function handles the failure of an IOA bringup command.
6516 *
6517 * Return value:
6518 * IPR_RC_JOB_RETURN
6519 **/
6520 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6521 {
6522 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6523 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6524
6525 dev_err(&ioa_cfg->pdev->dev,
6526 "0x%02X failed with IOASC: 0x%08X\n",
6527 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6528
6529 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6530 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6531 return IPR_RC_JOB_RETURN;
6532 }
6533
6534 /**
6535 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6536 * @ipr_cmd: ipr command struct
6537 *
6538 * This function handles the failure of a Mode Sense to the IOAFP.
6539 * Some adapters do not handle all mode pages.
6540 *
6541 * Return value:
6542 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6543 **/
6544 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6545 {
6546 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6547 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6548
6549 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6550 ipr_cmd->job_step = ipr_set_supported_devs;
6551 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6552 struct ipr_resource_entry, queue);
6553 return IPR_RC_JOB_CONTINUE;
6554 }
6555
6556 return ipr_reset_cmd_failed(ipr_cmd);
6557 }
6558
6559 /**
6560 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6561 * @ipr_cmd: ipr command struct
6562 *
6563 * This function send a Page 28 mode sense to the IOA to
6564 * retrieve SCSI bus attributes.
6565 *
6566 * Return value:
6567 * IPR_RC_JOB_RETURN
6568 **/
6569 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6570 {
6571 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6572
6573 ENTER;
6574 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6575 0x28, ioa_cfg->vpd_cbs_dma +
6576 offsetof(struct ipr_misc_cbs, mode_pages),
6577 sizeof(struct ipr_mode_pages));
6578
6579 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
6580 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
6581
6582 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6583
6584 LEAVE;
6585 return IPR_RC_JOB_RETURN;
6586 }
6587
6588 /**
6589 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6590 * @ipr_cmd: ipr command struct
6591 *
6592 * This function enables dual IOA RAID support if possible.
6593 *
6594 * Return value:
6595 * IPR_RC_JOB_RETURN
6596 **/
6597 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6598 {
6599 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6600 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6601 struct ipr_mode_page24 *mode_page;
6602 int length;
6603
6604 ENTER;
6605 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6606 sizeof(struct ipr_mode_page24));
6607
6608 if (mode_page)
6609 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6610
6611 length = mode_pages->hdr.length + 1;
6612 mode_pages->hdr.length = 0;
6613
6614 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6615 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6616 length);
6617
6618 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6619 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6620
6621 LEAVE;
6622 return IPR_RC_JOB_RETURN;
6623 }
6624
6625 /**
6626 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6627 * @ipr_cmd: ipr command struct
6628 *
6629 * This function handles the failure of a Mode Sense to the IOAFP.
6630 * Some adapters do not handle all mode pages.
6631 *
6632 * Return value:
6633 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6634 **/
6635 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6636 {
6637 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6638
6639 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6640 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6641 return IPR_RC_JOB_CONTINUE;
6642 }
6643
6644 return ipr_reset_cmd_failed(ipr_cmd);
6645 }
6646
6647 /**
6648 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6649 * @ipr_cmd: ipr command struct
6650 *
6651 * This function send a mode sense to the IOA to retrieve
6652 * the IOA Advanced Function Control mode page.
6653 *
6654 * Return value:
6655 * IPR_RC_JOB_RETURN
6656 **/
6657 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6658 {
6659 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6660
6661 ENTER;
6662 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6663 0x24, ioa_cfg->vpd_cbs_dma +
6664 offsetof(struct ipr_misc_cbs, mode_pages),
6665 sizeof(struct ipr_mode_pages));
6666
6667 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6668 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6669
6670 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6671
6672 LEAVE;
6673 return IPR_RC_JOB_RETURN;
6674 }
6675
6676 /**
6677 * ipr_init_res_table - Initialize the resource table
6678 * @ipr_cmd: ipr command struct
6679 *
6680 * This function looks through the existing resource table, comparing
6681 * it with the config table. This function will take care of old/new
6682 * devices and schedule adding/removing them from the mid-layer
6683 * as appropriate.
6684 *
6685 * Return value:
6686 * IPR_RC_JOB_CONTINUE
6687 **/
6688 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
6689 {
6690 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6691 struct ipr_resource_entry *res, *temp;
6692 struct ipr_config_table_entry_wrapper cfgtew;
6693 int entries, found, flag, i;
6694 LIST_HEAD(old_res);
6695
6696 ENTER;
6697 if (ioa_cfg->sis64)
6698 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
6699 else
6700 flag = ioa_cfg->u.cfg_table->hdr.flags;
6701
6702 if (flag & IPR_UCODE_DOWNLOAD_REQ)
6703 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6704
6705 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6706 list_move_tail(&res->queue, &old_res);
6707
6708 if (ioa_cfg->sis64)
6709 entries = ioa_cfg->u.cfg_table64->hdr64.num_entries;
6710 else
6711 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
6712
6713 for (i = 0; i < entries; i++) {
6714 if (ioa_cfg->sis64)
6715 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
6716 else
6717 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
6718 found = 0;
6719
6720 list_for_each_entry_safe(res, temp, &old_res, queue) {
6721 if (ipr_is_same_device(res, &cfgtew)) {
6722 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6723 found = 1;
6724 break;
6725 }
6726 }
6727
6728 if (!found) {
6729 if (list_empty(&ioa_cfg->free_res_q)) {
6730 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6731 break;
6732 }
6733
6734 found = 1;
6735 res = list_entry(ioa_cfg->free_res_q.next,
6736 struct ipr_resource_entry, queue);
6737 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6738 ipr_init_res_entry(res, &cfgtew);
6739 res->add_to_ml = 1;
6740 }
6741
6742 if (found)
6743 ipr_update_res_entry(res, &cfgtew);
6744 }
6745
6746 list_for_each_entry_safe(res, temp, &old_res, queue) {
6747 if (res->sdev) {
6748 res->del_from_ml = 1;
6749 res->res_handle = IPR_INVALID_RES_HANDLE;
6750 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6751 }
6752 }
6753
6754 list_for_each_entry_safe(res, temp, &old_res, queue) {
6755 ipr_clear_res_target(res);
6756 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6757 }
6758
6759 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6760 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6761 else
6762 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6763
6764 LEAVE;
6765 return IPR_RC_JOB_CONTINUE;
6766 }
6767
6768 /**
6769 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6770 * @ipr_cmd: ipr command struct
6771 *
6772 * This function sends a Query IOA Configuration command
6773 * to the adapter to retrieve the IOA configuration table.
6774 *
6775 * Return value:
6776 * IPR_RC_JOB_RETURN
6777 **/
6778 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6779 {
6780 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6781 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6782 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6783 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6784
6785 ENTER;
6786 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6787 ioa_cfg->dual_raid = 1;
6788 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6789 ucode_vpd->major_release, ucode_vpd->card_type,
6790 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6791 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6792 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6793
6794 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6795 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
6796 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
6797
6798 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
6799 IPR_IOADL_FLAGS_READ_LAST);
6800
6801 ipr_cmd->job_step = ipr_init_res_table;
6802
6803 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6804
6805 LEAVE;
6806 return IPR_RC_JOB_RETURN;
6807 }
6808
6809 /**
6810 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6811 * @ipr_cmd: ipr command struct
6812 *
6813 * This utility function sends an inquiry to the adapter.
6814 *
6815 * Return value:
6816 * none
6817 **/
6818 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6819 dma_addr_t dma_addr, u8 xfer_len)
6820 {
6821 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6822
6823 ENTER;
6824 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6825 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6826
6827 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6828 ioarcb->cmd_pkt.cdb[1] = flags;
6829 ioarcb->cmd_pkt.cdb[2] = page;
6830 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6831
6832 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6833
6834 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6835 LEAVE;
6836 }
6837
6838 /**
6839 * ipr_inquiry_page_supported - Is the given inquiry page supported
6840 * @page0: inquiry page 0 buffer
6841 * @page: page code.
6842 *
6843 * This function determines if the specified inquiry page is supported.
6844 *
6845 * Return value:
6846 * 1 if page is supported / 0 if not
6847 **/
6848 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6849 {
6850 int i;
6851
6852 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6853 if (page0->page[i] == page)
6854 return 1;
6855
6856 return 0;
6857 }
6858
6859 /**
6860 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6861 * @ipr_cmd: ipr command struct
6862 *
6863 * This function sends a Page 0xD0 inquiry to the adapter
6864 * to retrieve adapter capabilities.
6865 *
6866 * Return value:
6867 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6868 **/
6869 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6870 {
6871 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6872 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6873 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6874
6875 ENTER;
6876 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6877 memset(cap, 0, sizeof(*cap));
6878
6879 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6880 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6881 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6882 sizeof(struct ipr_inquiry_cap));
6883 return IPR_RC_JOB_RETURN;
6884 }
6885
6886 LEAVE;
6887 return IPR_RC_JOB_CONTINUE;
6888 }
6889
6890 /**
6891 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6892 * @ipr_cmd: ipr command struct
6893 *
6894 * This function sends a Page 3 inquiry to the adapter
6895 * to retrieve software VPD information.
6896 *
6897 * Return value:
6898 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6899 **/
6900 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
6901 {
6902 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6903
6904 ENTER;
6905
6906 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
6907
6908 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6909 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6910 sizeof(struct ipr_inquiry_page3));
6911
6912 LEAVE;
6913 return IPR_RC_JOB_RETURN;
6914 }
6915
6916 /**
6917 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6918 * @ipr_cmd: ipr command struct
6919 *
6920 * This function sends a Page 0 inquiry to the adapter
6921 * to retrieve supported inquiry pages.
6922 *
6923 * Return value:
6924 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6925 **/
6926 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
6927 {
6928 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6929 char type[5];
6930
6931 ENTER;
6932
6933 /* Grab the type out of the VPD and store it away */
6934 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6935 type[4] = '\0';
6936 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6937
6938 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6939
6940 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6941 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6942 sizeof(struct ipr_inquiry_page0));
6943
6944 LEAVE;
6945 return IPR_RC_JOB_RETURN;
6946 }
6947
6948 /**
6949 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6950 * @ipr_cmd: ipr command struct
6951 *
6952 * This function sends a standard inquiry to the adapter.
6953 *
6954 * Return value:
6955 * IPR_RC_JOB_RETURN
6956 **/
6957 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6958 {
6959 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6960
6961 ENTER;
6962 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6963
6964 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6965 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6966 sizeof(struct ipr_ioa_vpd));
6967
6968 LEAVE;
6969 return IPR_RC_JOB_RETURN;
6970 }
6971
6972 /**
6973 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
6974 * @ipr_cmd: ipr command struct
6975 *
6976 * This function send an Identify Host Request Response Queue
6977 * command to establish the HRRQ with the adapter.
6978 *
6979 * Return value:
6980 * IPR_RC_JOB_RETURN
6981 **/
6982 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
6983 {
6984 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6985 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6986
6987 ENTER;
6988 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6989
6990 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6991 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6992
6993 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6994 if (ioa_cfg->sis64)
6995 ioarcb->cmd_pkt.cdb[1] = 0x1;
6996 ioarcb->cmd_pkt.cdb[2] =
6997 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6998 ioarcb->cmd_pkt.cdb[3] =
6999 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff;
7000 ioarcb->cmd_pkt.cdb[4] =
7001 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff;
7002 ioarcb->cmd_pkt.cdb[5] =
7003 ((u64) ioa_cfg->host_rrq_dma) & 0xff;
7004 ioarcb->cmd_pkt.cdb[7] =
7005 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
7006 ioarcb->cmd_pkt.cdb[8] =
7007 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
7008
7009 if (ioa_cfg->sis64) {
7010 ioarcb->cmd_pkt.cdb[10] =
7011 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff;
7012 ioarcb->cmd_pkt.cdb[11] =
7013 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff;
7014 ioarcb->cmd_pkt.cdb[12] =
7015 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff;
7016 ioarcb->cmd_pkt.cdb[13] =
7017 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff;
7018 }
7019
7020 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7021
7022 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7023
7024 LEAVE;
7025 return IPR_RC_JOB_RETURN;
7026 }
7027
7028 /**
7029 * ipr_reset_timer_done - Adapter reset timer function
7030 * @ipr_cmd: ipr command struct
7031 *
7032 * Description: This function is used in adapter reset processing
7033 * for timing events. If the reset_cmd pointer in the IOA
7034 * config struct is not this adapter's we are doing nested
7035 * resets and fail_all_ops will take care of freeing the
7036 * command block.
7037 *
7038 * Return value:
7039 * none
7040 **/
7041 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7042 {
7043 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7044 unsigned long lock_flags = 0;
7045
7046 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7047
7048 if (ioa_cfg->reset_cmd == ipr_cmd) {
7049 list_del(&ipr_cmd->queue);
7050 ipr_cmd->done(ipr_cmd);
7051 }
7052
7053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7054 }
7055
7056 /**
7057 * ipr_reset_start_timer - Start a timer for adapter reset job
7058 * @ipr_cmd: ipr command struct
7059 * @timeout: timeout value
7060 *
7061 * Description: This function is used in adapter reset processing
7062 * for timing events. If the reset_cmd pointer in the IOA
7063 * config struct is not this adapter's we are doing nested
7064 * resets and fail_all_ops will take care of freeing the
7065 * command block.
7066 *
7067 * Return value:
7068 * none
7069 **/
7070 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7071 unsigned long timeout)
7072 {
7073 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7074 ipr_cmd->done = ipr_reset_ioa_job;
7075
7076 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7077 ipr_cmd->timer.expires = jiffies + timeout;
7078 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7079 add_timer(&ipr_cmd->timer);
7080 }
7081
7082 /**
7083 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7084 * @ioa_cfg: ioa cfg struct
7085 *
7086 * Return value:
7087 * nothing
7088 **/
7089 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7090 {
7091 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
7092
7093 /* Initialize Host RRQ pointers */
7094 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
7095 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
7096 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
7097 ioa_cfg->toggle_bit = 1;
7098
7099 /* Zero out config table */
7100 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7101 }
7102
7103 /**
7104 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7105 * @ipr_cmd: ipr command struct
7106 *
7107 * Return value:
7108 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7109 **/
7110 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7111 {
7112 unsigned long stage, stage_time;
7113 u32 feedback;
7114 volatile u32 int_reg;
7115 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7116 u64 maskval = 0;
7117
7118 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7119 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7120 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7121
7122 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7123
7124 /* sanity check the stage_time value */
7125 if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7126 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7127 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7128 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7129
7130 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7131 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7132 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7133 stage_time = ioa_cfg->transop_timeout;
7134 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7135 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7136 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7137 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7138 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7139 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7140 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7141 return IPR_RC_JOB_CONTINUE;
7142 }
7143
7144 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7145 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7146 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7147 ipr_cmd->done = ipr_reset_ioa_job;
7148 add_timer(&ipr_cmd->timer);
7149 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7150
7151 return IPR_RC_JOB_RETURN;
7152 }
7153
7154 /**
7155 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7156 * @ipr_cmd: ipr command struct
7157 *
7158 * This function reinitializes some control blocks and
7159 * enables destructive diagnostics on the adapter.
7160 *
7161 * Return value:
7162 * IPR_RC_JOB_RETURN
7163 **/
7164 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7165 {
7166 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7167 volatile u32 int_reg;
7168
7169 ENTER;
7170 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7171 ipr_init_ioa_mem(ioa_cfg);
7172
7173 ioa_cfg->allow_interrupts = 1;
7174 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7175
7176 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7177 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7178 ioa_cfg->regs.clr_interrupt_mask_reg32);
7179 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7180 return IPR_RC_JOB_CONTINUE;
7181 }
7182
7183 /* Enable destructive diagnostics on IOA */
7184 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7185
7186 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7187 if (ioa_cfg->sis64)
7188 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_mask_reg);
7189
7190 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7191
7192 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7193
7194 if (ioa_cfg->sis64) {
7195 ipr_cmd->job_step = ipr_reset_next_stage;
7196 return IPR_RC_JOB_CONTINUE;
7197 }
7198
7199 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7200 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7201 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7202 ipr_cmd->done = ipr_reset_ioa_job;
7203 add_timer(&ipr_cmd->timer);
7204 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7205
7206 LEAVE;
7207 return IPR_RC_JOB_RETURN;
7208 }
7209
7210 /**
7211 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7212 * @ipr_cmd: ipr command struct
7213 *
7214 * This function is invoked when an adapter dump has run out
7215 * of processing time.
7216 *
7217 * Return value:
7218 * IPR_RC_JOB_CONTINUE
7219 **/
7220 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7221 {
7222 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7223
7224 if (ioa_cfg->sdt_state == GET_DUMP)
7225 ioa_cfg->sdt_state = ABORT_DUMP;
7226
7227 ipr_cmd->job_step = ipr_reset_alert;
7228
7229 return IPR_RC_JOB_CONTINUE;
7230 }
7231
7232 /**
7233 * ipr_unit_check_no_data - Log a unit check/no data error log
7234 * @ioa_cfg: ioa config struct
7235 *
7236 * Logs an error indicating the adapter unit checked, but for some
7237 * reason, we were unable to fetch the unit check buffer.
7238 *
7239 * Return value:
7240 * nothing
7241 **/
7242 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7243 {
7244 ioa_cfg->errors_logged++;
7245 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7246 }
7247
7248 /**
7249 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7250 * @ioa_cfg: ioa config struct
7251 *
7252 * Fetches the unit check buffer from the adapter by clocking the data
7253 * through the mailbox register.
7254 *
7255 * Return value:
7256 * nothing
7257 **/
7258 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7259 {
7260 unsigned long mailbox;
7261 struct ipr_hostrcb *hostrcb;
7262 struct ipr_uc_sdt sdt;
7263 int rc, length;
7264 u32 ioasc;
7265
7266 mailbox = readl(ioa_cfg->ioa_mailbox);
7267
7268 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
7269 ipr_unit_check_no_data(ioa_cfg);
7270 return;
7271 }
7272
7273 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7274 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7275 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7276
7277 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7278 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7279 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
7280 ipr_unit_check_no_data(ioa_cfg);
7281 return;
7282 }
7283
7284 /* Find length of the first sdt entry (UC buffer) */
7285 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7286 length = be32_to_cpu(sdt.entry[0].end_token);
7287 else
7288 length = (be32_to_cpu(sdt.entry[0].end_token) -
7289 be32_to_cpu(sdt.entry[0].start_token)) &
7290 IPR_FMT2_MBX_ADDR_MASK;
7291
7292 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7293 struct ipr_hostrcb, queue);
7294 list_del(&hostrcb->queue);
7295 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7296
7297 rc = ipr_get_ldump_data_section(ioa_cfg,
7298 be32_to_cpu(sdt.entry[0].start_token),
7299 (__be32 *)&hostrcb->hcam,
7300 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7301
7302 if (!rc) {
7303 ipr_handle_log_data(ioa_cfg, hostrcb);
7304 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
7305 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7306 ioa_cfg->sdt_state == GET_DUMP)
7307 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7308 } else
7309 ipr_unit_check_no_data(ioa_cfg);
7310
7311 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7312 }
7313
7314 /**
7315 * ipr_reset_restore_cfg_space - Restore PCI config space.
7316 * @ipr_cmd: ipr command struct
7317 *
7318 * Description: This function restores the saved PCI config space of
7319 * the adapter, fails all outstanding ops back to the callers, and
7320 * fetches the dump/unit check if applicable to this reset.
7321 *
7322 * Return value:
7323 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7324 **/
7325 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7326 {
7327 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7328 int rc;
7329
7330 ENTER;
7331 ioa_cfg->pdev->state_saved = true;
7332 rc = pci_restore_state(ioa_cfg->pdev);
7333
7334 if (rc != PCIBIOS_SUCCESSFUL) {
7335 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7336 return IPR_RC_JOB_CONTINUE;
7337 }
7338
7339 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
7340 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7341 return IPR_RC_JOB_CONTINUE;
7342 }
7343
7344 ipr_fail_all_ops(ioa_cfg);
7345
7346 if (ioa_cfg->ioa_unit_checked) {
7347 ioa_cfg->ioa_unit_checked = 0;
7348 ipr_get_unit_check_buffer(ioa_cfg);
7349 ipr_cmd->job_step = ipr_reset_alert;
7350 ipr_reset_start_timer(ipr_cmd, 0);
7351 return IPR_RC_JOB_RETURN;
7352 }
7353
7354 if (ioa_cfg->in_ioa_bringdown) {
7355 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7356 } else {
7357 ipr_cmd->job_step = ipr_reset_enable_ioa;
7358
7359 if (GET_DUMP == ioa_cfg->sdt_state) {
7360 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
7361 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7362 schedule_work(&ioa_cfg->work_q);
7363 return IPR_RC_JOB_RETURN;
7364 }
7365 }
7366
7367 ENTER;
7368 return IPR_RC_JOB_CONTINUE;
7369 }
7370
7371 /**
7372 * ipr_reset_bist_done - BIST has completed on the adapter.
7373 * @ipr_cmd: ipr command struct
7374 *
7375 * Description: Unblock config space and resume the reset process.
7376 *
7377 * Return value:
7378 * IPR_RC_JOB_CONTINUE
7379 **/
7380 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7381 {
7382 ENTER;
7383 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7384 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7385 LEAVE;
7386 return IPR_RC_JOB_CONTINUE;
7387 }
7388
7389 /**
7390 * ipr_reset_start_bist - Run BIST on the adapter.
7391 * @ipr_cmd: ipr command struct
7392 *
7393 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7394 *
7395 * Return value:
7396 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7397 **/
7398 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7399 {
7400 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7401 int rc;
7402
7403 ENTER;
7404 pci_block_user_cfg_access(ioa_cfg->pdev);
7405 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7406
7407 if (rc != PCIBIOS_SUCCESSFUL) {
7408 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7409 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7410 rc = IPR_RC_JOB_CONTINUE;
7411 } else {
7412 ipr_cmd->job_step = ipr_reset_bist_done;
7413 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7414 rc = IPR_RC_JOB_RETURN;
7415 }
7416
7417 LEAVE;
7418 return rc;
7419 }
7420
7421 /**
7422 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7423 * @ipr_cmd: ipr command struct
7424 *
7425 * Description: This clears PCI reset to the adapter and delays two seconds.
7426 *
7427 * Return value:
7428 * IPR_RC_JOB_RETURN
7429 **/
7430 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7431 {
7432 ENTER;
7433 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
7434 ipr_cmd->job_step = ipr_reset_bist_done;
7435 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7436 LEAVE;
7437 return IPR_RC_JOB_RETURN;
7438 }
7439
7440 /**
7441 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
7442 * @ipr_cmd: ipr command struct
7443 *
7444 * Description: This asserts PCI reset to the adapter.
7445 *
7446 * Return value:
7447 * IPR_RC_JOB_RETURN
7448 **/
7449 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
7450 {
7451 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7452 struct pci_dev *pdev = ioa_cfg->pdev;
7453
7454 ENTER;
7455 pci_block_user_cfg_access(pdev);
7456 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7457 ipr_cmd->job_step = ipr_reset_slot_reset_done;
7458 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
7459 LEAVE;
7460 return IPR_RC_JOB_RETURN;
7461 }
7462
7463 /**
7464 * ipr_reset_allowed - Query whether or not IOA can be reset
7465 * @ioa_cfg: ioa config struct
7466 *
7467 * Return value:
7468 * 0 if reset not allowed / non-zero if reset is allowed
7469 **/
7470 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
7471 {
7472 volatile u32 temp_reg;
7473
7474 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7475 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
7476 }
7477
7478 /**
7479 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
7480 * @ipr_cmd: ipr command struct
7481 *
7482 * Description: This function waits for adapter permission to run BIST,
7483 * then runs BIST. If the adapter does not give permission after a
7484 * reasonable time, we will reset the adapter anyway. The impact of
7485 * resetting the adapter without warning the adapter is the risk of
7486 * losing the persistent error log on the adapter. If the adapter is
7487 * reset while it is writing to the flash on the adapter, the flash
7488 * segment will have bad ECC and be zeroed.
7489 *
7490 * Return value:
7491 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7492 **/
7493 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
7494 {
7495 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7496 int rc = IPR_RC_JOB_RETURN;
7497
7498 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
7499 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7500 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7501 } else {
7502 ipr_cmd->job_step = ioa_cfg->reset;
7503 rc = IPR_RC_JOB_CONTINUE;
7504 }
7505
7506 return rc;
7507 }
7508
7509 /**
7510 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
7511 * @ipr_cmd: ipr command struct
7512 *
7513 * Description: This function alerts the adapter that it will be reset.
7514 * If memory space is not currently enabled, proceed directly
7515 * to running BIST on the adapter. The timer must always be started
7516 * so we guarantee we do not run BIST from ipr_isr.
7517 *
7518 * Return value:
7519 * IPR_RC_JOB_RETURN
7520 **/
7521 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
7522 {
7523 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7524 u16 cmd_reg;
7525 int rc;
7526
7527 ENTER;
7528 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
7529
7530 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
7531 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
7532 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
7533 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
7534 } else {
7535 ipr_cmd->job_step = ioa_cfg->reset;
7536 }
7537
7538 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7539 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7540
7541 LEAVE;
7542 return IPR_RC_JOB_RETURN;
7543 }
7544
7545 /**
7546 * ipr_reset_ucode_download_done - Microcode download completion
7547 * @ipr_cmd: ipr command struct
7548 *
7549 * Description: This function unmaps the microcode download buffer.
7550 *
7551 * Return value:
7552 * IPR_RC_JOB_CONTINUE
7553 **/
7554 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
7555 {
7556 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7557 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7558
7559 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
7560 sglist->num_sg, DMA_TO_DEVICE);
7561
7562 ipr_cmd->job_step = ipr_reset_alert;
7563 return IPR_RC_JOB_CONTINUE;
7564 }
7565
7566 /**
7567 * ipr_reset_ucode_download - Download microcode to the adapter
7568 * @ipr_cmd: ipr command struct
7569 *
7570 * Description: This function checks to see if it there is microcode
7571 * to download to the adapter. If there is, a download is performed.
7572 *
7573 * Return value:
7574 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7575 **/
7576 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
7577 {
7578 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7579 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7580
7581 ENTER;
7582 ipr_cmd->job_step = ipr_reset_alert;
7583
7584 if (!sglist)
7585 return IPR_RC_JOB_CONTINUE;
7586
7587 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7588 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7589 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
7590 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
7591 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
7592 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
7593 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
7594
7595 if (ioa_cfg->sis64)
7596 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
7597 else
7598 ipr_build_ucode_ioadl(ipr_cmd, sglist);
7599 ipr_cmd->job_step = ipr_reset_ucode_download_done;
7600
7601 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7602 IPR_WRITE_BUFFER_TIMEOUT);
7603
7604 LEAVE;
7605 return IPR_RC_JOB_RETURN;
7606 }
7607
7608 /**
7609 * ipr_reset_shutdown_ioa - Shutdown the adapter
7610 * @ipr_cmd: ipr command struct
7611 *
7612 * Description: This function issues an adapter shutdown of the
7613 * specified type to the specified adapter as part of the
7614 * adapter reset job.
7615 *
7616 * Return value:
7617 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7618 **/
7619 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
7620 {
7621 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7622 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
7623 unsigned long timeout;
7624 int rc = IPR_RC_JOB_CONTINUE;
7625
7626 ENTER;
7627 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
7628 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7629 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7630 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
7631 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
7632
7633 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
7634 timeout = IPR_SHUTDOWN_TIMEOUT;
7635 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
7636 timeout = IPR_INTERNAL_TIMEOUT;
7637 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7638 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
7639 else
7640 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
7641
7642 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
7643
7644 rc = IPR_RC_JOB_RETURN;
7645 ipr_cmd->job_step = ipr_reset_ucode_download;
7646 } else
7647 ipr_cmd->job_step = ipr_reset_alert;
7648
7649 LEAVE;
7650 return rc;
7651 }
7652
7653 /**
7654 * ipr_reset_ioa_job - Adapter reset job
7655 * @ipr_cmd: ipr command struct
7656 *
7657 * Description: This function is the job router for the adapter reset job.
7658 *
7659 * Return value:
7660 * none
7661 **/
7662 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
7663 {
7664 u32 rc, ioasc;
7665 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7666
7667 do {
7668 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
7669
7670 if (ioa_cfg->reset_cmd != ipr_cmd) {
7671 /*
7672 * We are doing nested adapter resets and this is
7673 * not the current reset job.
7674 */
7675 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7676 return;
7677 }
7678
7679 if (IPR_IOASC_SENSE_KEY(ioasc)) {
7680 rc = ipr_cmd->job_step_failed(ipr_cmd);
7681 if (rc == IPR_RC_JOB_RETURN)
7682 return;
7683 }
7684
7685 ipr_reinit_ipr_cmnd(ipr_cmd);
7686 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
7687 rc = ipr_cmd->job_step(ipr_cmd);
7688 } while(rc == IPR_RC_JOB_CONTINUE);
7689 }
7690
7691 /**
7692 * _ipr_initiate_ioa_reset - Initiate an adapter reset
7693 * @ioa_cfg: ioa config struct
7694 * @job_step: first job step of reset job
7695 * @shutdown_type: shutdown type
7696 *
7697 * Description: This function will initiate the reset of the given adapter
7698 * starting at the selected job step.
7699 * If the caller needs to wait on the completion of the reset,
7700 * the caller must sleep on the reset_wait_q.
7701 *
7702 * Return value:
7703 * none
7704 **/
7705 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7706 int (*job_step) (struct ipr_cmnd *),
7707 enum ipr_shutdown_type shutdown_type)
7708 {
7709 struct ipr_cmnd *ipr_cmd;
7710
7711 ioa_cfg->in_reset_reload = 1;
7712 ioa_cfg->allow_cmds = 0;
7713 scsi_block_requests(ioa_cfg->host);
7714
7715 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
7716 ioa_cfg->reset_cmd = ipr_cmd;
7717 ipr_cmd->job_step = job_step;
7718 ipr_cmd->u.shutdown_type = shutdown_type;
7719
7720 ipr_reset_ioa_job(ipr_cmd);
7721 }
7722
7723 /**
7724 * ipr_initiate_ioa_reset - Initiate an adapter reset
7725 * @ioa_cfg: ioa config struct
7726 * @shutdown_type: shutdown type
7727 *
7728 * Description: This function will initiate the reset of the given adapter.
7729 * If the caller needs to wait on the completion of the reset,
7730 * the caller must sleep on the reset_wait_q.
7731 *
7732 * Return value:
7733 * none
7734 **/
7735 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7736 enum ipr_shutdown_type shutdown_type)
7737 {
7738 if (ioa_cfg->ioa_is_dead)
7739 return;
7740
7741 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
7742 ioa_cfg->sdt_state = ABORT_DUMP;
7743
7744 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
7745 dev_err(&ioa_cfg->pdev->dev,
7746 "IOA taken offline - error recovery failed\n");
7747
7748 ioa_cfg->reset_retries = 0;
7749 ioa_cfg->ioa_is_dead = 1;
7750
7751 if (ioa_cfg->in_ioa_bringdown) {
7752 ioa_cfg->reset_cmd = NULL;
7753 ioa_cfg->in_reset_reload = 0;
7754 ipr_fail_all_ops(ioa_cfg);
7755 wake_up_all(&ioa_cfg->reset_wait_q);
7756
7757 spin_unlock_irq(ioa_cfg->host->host_lock);
7758 scsi_unblock_requests(ioa_cfg->host);
7759 spin_lock_irq(ioa_cfg->host->host_lock);
7760 return;
7761 } else {
7762 ioa_cfg->in_ioa_bringdown = 1;
7763 shutdown_type = IPR_SHUTDOWN_NONE;
7764 }
7765 }
7766
7767 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
7768 shutdown_type);
7769 }
7770
7771 /**
7772 * ipr_reset_freeze - Hold off all I/O activity
7773 * @ipr_cmd: ipr command struct
7774 *
7775 * Description: If the PCI slot is frozen, hold off all I/O
7776 * activity; then, as soon as the slot is available again,
7777 * initiate an adapter reset.
7778 */
7779 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
7780 {
7781 /* Disallow new interrupts, avoid loop */
7782 ipr_cmd->ioa_cfg->allow_interrupts = 0;
7783 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7784 ipr_cmd->done = ipr_reset_ioa_job;
7785 return IPR_RC_JOB_RETURN;
7786 }
7787
7788 /**
7789 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
7790 * @pdev: PCI device struct
7791 *
7792 * Description: This routine is called to tell us that the PCI bus
7793 * is down. Can't do anything here, except put the device driver
7794 * into a holding pattern, waiting for the PCI bus to come back.
7795 */
7796 static void ipr_pci_frozen(struct pci_dev *pdev)
7797 {
7798 unsigned long flags = 0;
7799 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7800
7801 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7802 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
7803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7804 }
7805
7806 /**
7807 * ipr_pci_slot_reset - Called when PCI slot has been reset.
7808 * @pdev: PCI device struct
7809 *
7810 * Description: This routine is called by the pci error recovery
7811 * code after the PCI slot has been reset, just before we
7812 * should resume normal operations.
7813 */
7814 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
7815 {
7816 unsigned long flags = 0;
7817 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7818
7819 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7820 if (ioa_cfg->needs_warm_reset)
7821 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7822 else
7823 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
7824 IPR_SHUTDOWN_NONE);
7825 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7826 return PCI_ERS_RESULT_RECOVERED;
7827 }
7828
7829 /**
7830 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
7831 * @pdev: PCI device struct
7832 *
7833 * Description: This routine is called when the PCI bus has
7834 * permanently failed.
7835 */
7836 static void ipr_pci_perm_failure(struct pci_dev *pdev)
7837 {
7838 unsigned long flags = 0;
7839 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7840
7841 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7842 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7843 ioa_cfg->sdt_state = ABORT_DUMP;
7844 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7845 ioa_cfg->in_ioa_bringdown = 1;
7846 ioa_cfg->allow_cmds = 0;
7847 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7848 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7849 }
7850
7851 /**
7852 * ipr_pci_error_detected - Called when a PCI error is detected.
7853 * @pdev: PCI device struct
7854 * @state: PCI channel state
7855 *
7856 * Description: Called when a PCI error is detected.
7857 *
7858 * Return value:
7859 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7860 */
7861 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7862 pci_channel_state_t state)
7863 {
7864 switch (state) {
7865 case pci_channel_io_frozen:
7866 ipr_pci_frozen(pdev);
7867 return PCI_ERS_RESULT_NEED_RESET;
7868 case pci_channel_io_perm_failure:
7869 ipr_pci_perm_failure(pdev);
7870 return PCI_ERS_RESULT_DISCONNECT;
7871 break;
7872 default:
7873 break;
7874 }
7875 return PCI_ERS_RESULT_NEED_RESET;
7876 }
7877
7878 /**
7879 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7880 * @ioa_cfg: ioa cfg struct
7881 *
7882 * Description: This is the second phase of adapter intialization
7883 * This function takes care of initilizing the adapter to the point
7884 * where it can accept new commands.
7885
7886 * Return value:
7887 * 0 on success / -EIO on failure
7888 **/
7889 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7890 {
7891 int rc = 0;
7892 unsigned long host_lock_flags = 0;
7893
7894 ENTER;
7895 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7896 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
7897 if (ioa_cfg->needs_hard_reset) {
7898 ioa_cfg->needs_hard_reset = 0;
7899 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7900 } else
7901 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7902 IPR_SHUTDOWN_NONE);
7903
7904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7905 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7906 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7907
7908 if (ioa_cfg->ioa_is_dead) {
7909 rc = -EIO;
7910 } else if (ipr_invalid_adapter(ioa_cfg)) {
7911 if (!ipr_testmode)
7912 rc = -EIO;
7913
7914 dev_err(&ioa_cfg->pdev->dev,
7915 "Adapter not supported in this hardware configuration.\n");
7916 }
7917
7918 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7919
7920 LEAVE;
7921 return rc;
7922 }
7923
7924 /**
7925 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7926 * @ioa_cfg: ioa config struct
7927 *
7928 * Return value:
7929 * none
7930 **/
7931 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7932 {
7933 int i;
7934
7935 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7936 if (ioa_cfg->ipr_cmnd_list[i])
7937 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7938 ioa_cfg->ipr_cmnd_list[i],
7939 ioa_cfg->ipr_cmnd_list_dma[i]);
7940
7941 ioa_cfg->ipr_cmnd_list[i] = NULL;
7942 }
7943
7944 if (ioa_cfg->ipr_cmd_pool)
7945 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7946
7947 ioa_cfg->ipr_cmd_pool = NULL;
7948 }
7949
7950 /**
7951 * ipr_free_mem - Frees memory allocated for an adapter
7952 * @ioa_cfg: ioa cfg struct
7953 *
7954 * Return value:
7955 * nothing
7956 **/
7957 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7958 {
7959 int i;
7960
7961 kfree(ioa_cfg->res_entries);
7962 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7963 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7964 ipr_free_cmd_blks(ioa_cfg);
7965 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7966 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7967 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
7968 ioa_cfg->u.cfg_table,
7969 ioa_cfg->cfg_table_dma);
7970
7971 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7972 pci_free_consistent(ioa_cfg->pdev,
7973 sizeof(struct ipr_hostrcb),
7974 ioa_cfg->hostrcb[i],
7975 ioa_cfg->hostrcb_dma[i]);
7976 }
7977
7978 ipr_free_dump(ioa_cfg);
7979 kfree(ioa_cfg->trace);
7980 }
7981
7982 /**
7983 * ipr_free_all_resources - Free all allocated resources for an adapter.
7984 * @ipr_cmd: ipr command struct
7985 *
7986 * This function frees all allocated resources for the
7987 * specified adapter.
7988 *
7989 * Return value:
7990 * none
7991 **/
7992 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7993 {
7994 struct pci_dev *pdev = ioa_cfg->pdev;
7995
7996 ENTER;
7997 free_irq(pdev->irq, ioa_cfg);
7998 pci_disable_msi(pdev);
7999 iounmap(ioa_cfg->hdw_dma_regs);
8000 pci_release_regions(pdev);
8001 ipr_free_mem(ioa_cfg);
8002 scsi_host_put(ioa_cfg->host);
8003 pci_disable_device(pdev);
8004 LEAVE;
8005 }
8006
8007 /**
8008 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8009 * @ioa_cfg: ioa config struct
8010 *
8011 * Return value:
8012 * 0 on success / -ENOMEM on allocation failure
8013 **/
8014 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8015 {
8016 struct ipr_cmnd *ipr_cmd;
8017 struct ipr_ioarcb *ioarcb;
8018 dma_addr_t dma_addr;
8019 int i;
8020
8021 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
8022 sizeof(struct ipr_cmnd), 16, 0);
8023
8024 if (!ioa_cfg->ipr_cmd_pool)
8025 return -ENOMEM;
8026
8027 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8028 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
8029
8030 if (!ipr_cmd) {
8031 ipr_free_cmd_blks(ioa_cfg);
8032 return -ENOMEM;
8033 }
8034
8035 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8036 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8037 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8038
8039 ioarcb = &ipr_cmd->ioarcb;
8040 ipr_cmd->dma_addr = dma_addr;
8041 if (ioa_cfg->sis64)
8042 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8043 else
8044 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8045
8046 ioarcb->host_response_handle = cpu_to_be32(i << 2);
8047 if (ioa_cfg->sis64) {
8048 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8049 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8050 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
8051 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, ioasa));
8052 } else {
8053 ioarcb->write_ioadl_addr =
8054 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8055 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8056 ioarcb->ioasa_host_pci_addr =
8057 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
8058 }
8059 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8060 ipr_cmd->cmd_index = i;
8061 ipr_cmd->ioa_cfg = ioa_cfg;
8062 ipr_cmd->sense_buffer_dma = dma_addr +
8063 offsetof(struct ipr_cmnd, sense_buffer);
8064
8065 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8066 }
8067
8068 return 0;
8069 }
8070
8071 /**
8072 * ipr_alloc_mem - Allocate memory for an adapter
8073 * @ioa_cfg: ioa config struct
8074 *
8075 * Return value:
8076 * 0 on success / non-zero for error
8077 **/
8078 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8079 {
8080 struct pci_dev *pdev = ioa_cfg->pdev;
8081 int i, rc = -ENOMEM;
8082
8083 ENTER;
8084 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
8085 ioa_cfg->max_devs_supported, GFP_KERNEL);
8086
8087 if (!ioa_cfg->res_entries)
8088 goto out;
8089
8090 if (ioa_cfg->sis64) {
8091 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8092 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8093 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8094 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8095 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8096 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8097 }
8098
8099 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
8100 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
8101 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8102 }
8103
8104 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8105 sizeof(struct ipr_misc_cbs),
8106 &ioa_cfg->vpd_cbs_dma);
8107
8108 if (!ioa_cfg->vpd_cbs)
8109 goto out_free_res_entries;
8110
8111 if (ipr_alloc_cmd_blks(ioa_cfg))
8112 goto out_free_vpd_cbs;
8113
8114 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
8115 sizeof(u32) * IPR_NUM_CMD_BLKS,
8116 &ioa_cfg->host_rrq_dma);
8117
8118 if (!ioa_cfg->host_rrq)
8119 goto out_ipr_free_cmd_blocks;
8120
8121 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
8122 ioa_cfg->cfg_table_size,
8123 &ioa_cfg->cfg_table_dma);
8124
8125 if (!ioa_cfg->u.cfg_table)
8126 goto out_free_host_rrq;
8127
8128 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8129 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
8130 sizeof(struct ipr_hostrcb),
8131 &ioa_cfg->hostrcb_dma[i]);
8132
8133 if (!ioa_cfg->hostrcb[i])
8134 goto out_free_hostrcb_dma;
8135
8136 ioa_cfg->hostrcb[i]->hostrcb_dma =
8137 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
8138 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
8139 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
8140 }
8141
8142 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
8143 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
8144
8145 if (!ioa_cfg->trace)
8146 goto out_free_hostrcb_dma;
8147
8148 rc = 0;
8149 out:
8150 LEAVE;
8151 return rc;
8152
8153 out_free_hostrcb_dma:
8154 while (i-- > 0) {
8155 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
8156 ioa_cfg->hostrcb[i],
8157 ioa_cfg->hostrcb_dma[i]);
8158 }
8159 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
8160 ioa_cfg->u.cfg_table,
8161 ioa_cfg->cfg_table_dma);
8162 out_free_host_rrq:
8163 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8164 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8165 out_ipr_free_cmd_blocks:
8166 ipr_free_cmd_blks(ioa_cfg);
8167 out_free_vpd_cbs:
8168 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
8169 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8170 out_free_res_entries:
8171 kfree(ioa_cfg->res_entries);
8172 goto out;
8173 }
8174
8175 /**
8176 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
8177 * @ioa_cfg: ioa config struct
8178 *
8179 * Return value:
8180 * none
8181 **/
8182 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
8183 {
8184 int i;
8185
8186 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
8187 ioa_cfg->bus_attr[i].bus = i;
8188 ioa_cfg->bus_attr[i].qas_enabled = 0;
8189 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
8190 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
8191 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
8192 else
8193 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
8194 }
8195 }
8196
8197 /**
8198 * ipr_init_ioa_cfg - Initialize IOA config struct
8199 * @ioa_cfg: ioa config struct
8200 * @host: scsi host struct
8201 * @pdev: PCI dev struct
8202 *
8203 * Return value:
8204 * none
8205 **/
8206 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
8207 struct Scsi_Host *host, struct pci_dev *pdev)
8208 {
8209 const struct ipr_interrupt_offsets *p;
8210 struct ipr_interrupts *t;
8211 void __iomem *base;
8212
8213 ioa_cfg->host = host;
8214 ioa_cfg->pdev = pdev;
8215 ioa_cfg->log_level = ipr_log_level;
8216 ioa_cfg->doorbell = IPR_DOORBELL;
8217 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
8218 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
8219 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
8220 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
8221 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
8222 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
8223 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
8224 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
8225
8226 INIT_LIST_HEAD(&ioa_cfg->free_q);
8227 INIT_LIST_HEAD(&ioa_cfg->pending_q);
8228 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
8229 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
8230 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
8231 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
8232 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
8233 init_waitqueue_head(&ioa_cfg->reset_wait_q);
8234 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8235 ioa_cfg->sdt_state = INACTIVE;
8236
8237 ipr_initialize_bus_attr(ioa_cfg);
8238 ioa_cfg->max_devs_supported = ipr_max_devs;
8239
8240 if (ioa_cfg->sis64) {
8241 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
8242 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
8243 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
8244 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
8245 } else {
8246 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
8247 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
8248 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
8249 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
8250 }
8251 host->max_channel = IPR_MAX_BUS_TO_SCAN;
8252 host->unique_id = host->host_no;
8253 host->max_cmd_len = IPR_MAX_CDB_LEN;
8254 pci_set_drvdata(pdev, ioa_cfg);
8255
8256 p = &ioa_cfg->chip_cfg->regs;
8257 t = &ioa_cfg->regs;
8258 base = ioa_cfg->hdw_dma_regs;
8259
8260 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
8261 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
8262 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
8263 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
8264 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
8265 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
8266 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
8267 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
8268 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
8269 t->ioarrin_reg = base + p->ioarrin_reg;
8270 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
8271 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
8272 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
8273 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
8274 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
8275 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
8276
8277 if (ioa_cfg->sis64) {
8278 t->init_feedback_reg = base + p->init_feedback_reg;
8279 t->dump_addr_reg = base + p->dump_addr_reg;
8280 t->dump_data_reg = base + p->dump_data_reg;
8281 }
8282 }
8283
8284 /**
8285 * ipr_get_chip_info - Find adapter chip information
8286 * @dev_id: PCI device id struct
8287 *
8288 * Return value:
8289 * ptr to chip information on success / NULL on failure
8290 **/
8291 static const struct ipr_chip_t * __devinit
8292 ipr_get_chip_info(const struct pci_device_id *dev_id)
8293 {
8294 int i;
8295
8296 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
8297 if (ipr_chip[i].vendor == dev_id->vendor &&
8298 ipr_chip[i].device == dev_id->device)
8299 return &ipr_chip[i];
8300 return NULL;
8301 }
8302
8303 /**
8304 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
8305 * @pdev: PCI device struct
8306 *
8307 * Description: Simply set the msi_received flag to 1 indicating that
8308 * Message Signaled Interrupts are supported.
8309 *
8310 * Return value:
8311 * 0 on success / non-zero on failure
8312 **/
8313 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
8314 {
8315 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
8316 unsigned long lock_flags = 0;
8317 irqreturn_t rc = IRQ_HANDLED;
8318
8319 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8320
8321 ioa_cfg->msi_received = 1;
8322 wake_up(&ioa_cfg->msi_wait_q);
8323
8324 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8325 return rc;
8326 }
8327
8328 /**
8329 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
8330 * @pdev: PCI device struct
8331 *
8332 * Description: The return value from pci_enable_msi() can not always be
8333 * trusted. This routine sets up and initiates a test interrupt to determine
8334 * if the interrupt is received via the ipr_test_intr() service routine.
8335 * If the tests fails, the driver will fall back to LSI.
8336 *
8337 * Return value:
8338 * 0 on success / non-zero on failure
8339 **/
8340 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
8341 struct pci_dev *pdev)
8342 {
8343 int rc;
8344 volatile u32 int_reg;
8345 unsigned long lock_flags = 0;
8346
8347 ENTER;
8348
8349 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8350 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8351 ioa_cfg->msi_received = 0;
8352 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8353 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
8354 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8355 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8356
8357 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
8358 if (rc) {
8359 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
8360 return rc;
8361 } else if (ipr_debug)
8362 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
8363
8364 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
8365 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8366 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
8367 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8368
8369 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8370 if (!ioa_cfg->msi_received) {
8371 /* MSI test failed */
8372 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
8373 rc = -EOPNOTSUPP;
8374 } else if (ipr_debug)
8375 dev_info(&pdev->dev, "MSI test succeeded.\n");
8376
8377 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8378
8379 free_irq(pdev->irq, ioa_cfg);
8380
8381 LEAVE;
8382
8383 return rc;
8384 }
8385
8386 /**
8387 * ipr_probe_ioa - Allocates memory and does first stage of initialization
8388 * @pdev: PCI device struct
8389 * @dev_id: PCI device id struct
8390 *
8391 * Return value:
8392 * 0 on success / non-zero on failure
8393 **/
8394 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
8395 const struct pci_device_id *dev_id)
8396 {
8397 struct ipr_ioa_cfg *ioa_cfg;
8398 struct Scsi_Host *host;
8399 unsigned long ipr_regs_pci;
8400 void __iomem *ipr_regs;
8401 int rc = PCIBIOS_SUCCESSFUL;
8402 volatile u32 mask, uproc, interrupts;
8403
8404 ENTER;
8405
8406 if ((rc = pci_enable_device(pdev))) {
8407 dev_err(&pdev->dev, "Cannot enable adapter\n");
8408 goto out;
8409 }
8410
8411 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
8412
8413 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
8414
8415 if (!host) {
8416 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
8417 rc = -ENOMEM;
8418 goto out_disable;
8419 }
8420
8421 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
8422 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
8423 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
8424 sata_port_info.flags, &ipr_sata_ops);
8425
8426 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
8427
8428 if (!ioa_cfg->ipr_chip) {
8429 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
8430 dev_id->vendor, dev_id->device);
8431 goto out_scsi_host_put;
8432 }
8433
8434 /* set SIS 32 or SIS 64 */
8435 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
8436 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
8437
8438 if (ipr_transop_timeout)
8439 ioa_cfg->transop_timeout = ipr_transop_timeout;
8440 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
8441 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
8442 else
8443 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
8444
8445 ioa_cfg->revid = pdev->revision;
8446
8447 ipr_regs_pci = pci_resource_start(pdev, 0);
8448
8449 rc = pci_request_regions(pdev, IPR_NAME);
8450 if (rc < 0) {
8451 dev_err(&pdev->dev,
8452 "Couldn't register memory range of registers\n");
8453 goto out_scsi_host_put;
8454 }
8455
8456 ipr_regs = pci_ioremap_bar(pdev, 0);
8457
8458 if (!ipr_regs) {
8459 dev_err(&pdev->dev,
8460 "Couldn't map memory range of registers\n");
8461 rc = -ENOMEM;
8462 goto out_release_regions;
8463 }
8464
8465 ioa_cfg->hdw_dma_regs = ipr_regs;
8466 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
8467 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
8468
8469 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
8470
8471 pci_set_master(pdev);
8472
8473 if (ioa_cfg->sis64) {
8474 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8475 if (rc < 0) {
8476 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
8477 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8478 }
8479
8480 } else
8481 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8482
8483 if (rc < 0) {
8484 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
8485 goto cleanup_nomem;
8486 }
8487
8488 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
8489 ioa_cfg->chip_cfg->cache_line_size);
8490
8491 if (rc != PCIBIOS_SUCCESSFUL) {
8492 dev_err(&pdev->dev, "Write of cache line size failed\n");
8493 rc = -EIO;
8494 goto cleanup_nomem;
8495 }
8496
8497 /* Enable MSI style interrupts if they are supported. */
8498 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
8499 rc = ipr_test_msi(ioa_cfg, pdev);
8500 if (rc == -EOPNOTSUPP)
8501 pci_disable_msi(pdev);
8502 else if (rc)
8503 goto out_msi_disable;
8504 else
8505 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
8506 } else if (ipr_debug)
8507 dev_info(&pdev->dev, "Cannot enable MSI.\n");
8508
8509 /* Save away PCI config space for use following IOA reset */
8510 rc = pci_save_state(pdev);
8511
8512 if (rc != PCIBIOS_SUCCESSFUL) {
8513 dev_err(&pdev->dev, "Failed to save PCI config space\n");
8514 rc = -EIO;
8515 goto cleanup_nomem;
8516 }
8517
8518 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
8519 goto cleanup_nomem;
8520
8521 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
8522 goto cleanup_nomem;
8523
8524 if (ioa_cfg->sis64)
8525 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
8526 + ((sizeof(struct ipr_config_table_entry64)
8527 * ioa_cfg->max_devs_supported)));
8528 else
8529 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
8530 + ((sizeof(struct ipr_config_table_entry)
8531 * ioa_cfg->max_devs_supported)));
8532
8533 rc = ipr_alloc_mem(ioa_cfg);
8534 if (rc < 0) {
8535 dev_err(&pdev->dev,
8536 "Couldn't allocate enough memory for device driver!\n");
8537 goto cleanup_nomem;
8538 }
8539
8540 /*
8541 * If HRRQ updated interrupt is not masked, or reset alert is set,
8542 * the card is in an unknown state and needs a hard reset
8543 */
8544 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
8545 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
8546 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
8547 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
8548 ioa_cfg->needs_hard_reset = 1;
8549 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
8550 ioa_cfg->needs_hard_reset = 1;
8551 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
8552 ioa_cfg->ioa_unit_checked = 1;
8553
8554 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8555 rc = request_irq(pdev->irq, ipr_isr,
8556 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
8557 IPR_NAME, ioa_cfg);
8558
8559 if (rc) {
8560 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
8561 pdev->irq, rc);
8562 goto cleanup_nolog;
8563 }
8564
8565 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
8566 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
8567 ioa_cfg->needs_warm_reset = 1;
8568 ioa_cfg->reset = ipr_reset_slot_reset;
8569 } else
8570 ioa_cfg->reset = ipr_reset_start_bist;
8571
8572 spin_lock(&ipr_driver_lock);
8573 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
8574 spin_unlock(&ipr_driver_lock);
8575
8576 LEAVE;
8577 out:
8578 return rc;
8579
8580 cleanup_nolog:
8581 ipr_free_mem(ioa_cfg);
8582 cleanup_nomem:
8583 iounmap(ipr_regs);
8584 out_msi_disable:
8585 pci_disable_msi(pdev);
8586 out_release_regions:
8587 pci_release_regions(pdev);
8588 out_scsi_host_put:
8589 scsi_host_put(host);
8590 out_disable:
8591 pci_disable_device(pdev);
8592 goto out;
8593 }
8594
8595 /**
8596 * ipr_scan_vsets - Scans for VSET devices
8597 * @ioa_cfg: ioa config struct
8598 *
8599 * Description: Since the VSET resources do not follow SAM in that we can have
8600 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
8601 *
8602 * Return value:
8603 * none
8604 **/
8605 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
8606 {
8607 int target, lun;
8608
8609 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
8610 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
8611 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
8612 }
8613
8614 /**
8615 * ipr_initiate_ioa_bringdown - Bring down an adapter
8616 * @ioa_cfg: ioa config struct
8617 * @shutdown_type: shutdown type
8618 *
8619 * Description: This function will initiate bringing down the adapter.
8620 * This consists of issuing an IOA shutdown to the adapter
8621 * to flush the cache, and running BIST.
8622 * If the caller needs to wait on the completion of the reset,
8623 * the caller must sleep on the reset_wait_q.
8624 *
8625 * Return value:
8626 * none
8627 **/
8628 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
8629 enum ipr_shutdown_type shutdown_type)
8630 {
8631 ENTER;
8632 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8633 ioa_cfg->sdt_state = ABORT_DUMP;
8634 ioa_cfg->reset_retries = 0;
8635 ioa_cfg->in_ioa_bringdown = 1;
8636 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
8637 LEAVE;
8638 }
8639
8640 /**
8641 * __ipr_remove - Remove a single adapter
8642 * @pdev: pci device struct
8643 *
8644 * Adapter hot plug remove entry point.
8645 *
8646 * Return value:
8647 * none
8648 **/
8649 static void __ipr_remove(struct pci_dev *pdev)
8650 {
8651 unsigned long host_lock_flags = 0;
8652 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8653 ENTER;
8654
8655 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8656 while(ioa_cfg->in_reset_reload) {
8657 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8658 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8659 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8660 }
8661
8662 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8663
8664 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8665 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8666 flush_scheduled_work();
8667 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8668
8669 spin_lock(&ipr_driver_lock);
8670 list_del(&ioa_cfg->queue);
8671 spin_unlock(&ipr_driver_lock);
8672
8673 if (ioa_cfg->sdt_state == ABORT_DUMP)
8674 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8675 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8676
8677 ipr_free_all_resources(ioa_cfg);
8678
8679 LEAVE;
8680 }
8681
8682 /**
8683 * ipr_remove - IOA hot plug remove entry point
8684 * @pdev: pci device struct
8685 *
8686 * Adapter hot plug remove entry point.
8687 *
8688 * Return value:
8689 * none
8690 **/
8691 static void __devexit ipr_remove(struct pci_dev *pdev)
8692 {
8693 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8694
8695 ENTER;
8696
8697 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
8698 &ipr_trace_attr);
8699 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
8700 &ipr_dump_attr);
8701 scsi_remove_host(ioa_cfg->host);
8702
8703 __ipr_remove(pdev);
8704
8705 LEAVE;
8706 }
8707
8708 /**
8709 * ipr_probe - Adapter hot plug add entry point
8710 *
8711 * Return value:
8712 * 0 on success / non-zero on failure
8713 **/
8714 static int __devinit ipr_probe(struct pci_dev *pdev,
8715 const struct pci_device_id *dev_id)
8716 {
8717 struct ipr_ioa_cfg *ioa_cfg;
8718 int rc;
8719
8720 rc = ipr_probe_ioa(pdev, dev_id);
8721
8722 if (rc)
8723 return rc;
8724
8725 ioa_cfg = pci_get_drvdata(pdev);
8726 rc = ipr_probe_ioa_part2(ioa_cfg);
8727
8728 if (rc) {
8729 __ipr_remove(pdev);
8730 return rc;
8731 }
8732
8733 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
8734
8735 if (rc) {
8736 __ipr_remove(pdev);
8737 return rc;
8738 }
8739
8740 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
8741 &ipr_trace_attr);
8742
8743 if (rc) {
8744 scsi_remove_host(ioa_cfg->host);
8745 __ipr_remove(pdev);
8746 return rc;
8747 }
8748
8749 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
8750 &ipr_dump_attr);
8751
8752 if (rc) {
8753 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
8754 &ipr_trace_attr);
8755 scsi_remove_host(ioa_cfg->host);
8756 __ipr_remove(pdev);
8757 return rc;
8758 }
8759
8760 scsi_scan_host(ioa_cfg->host);
8761 ipr_scan_vsets(ioa_cfg);
8762 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
8763 ioa_cfg->allow_ml_add_del = 1;
8764 ioa_cfg->host->max_channel = IPR_VSET_BUS;
8765 schedule_work(&ioa_cfg->work_q);
8766 return 0;
8767 }
8768
8769 /**
8770 * ipr_shutdown - Shutdown handler.
8771 * @pdev: pci device struct
8772 *
8773 * This function is invoked upon system shutdown/reboot. It will issue
8774 * an adapter shutdown to the adapter to flush the write cache.
8775 *
8776 * Return value:
8777 * none
8778 **/
8779 static void ipr_shutdown(struct pci_dev *pdev)
8780 {
8781 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8782 unsigned long lock_flags = 0;
8783
8784 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8785 while(ioa_cfg->in_reset_reload) {
8786 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8787 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8788 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8789 }
8790
8791 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8792 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8793 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8794 }
8795
8796 static struct pci_device_id ipr_pci_table[] __devinitdata = {
8797 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8798 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
8799 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8800 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
8801 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8802 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
8803 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8804 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
8805 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8806 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
8807 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8808 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
8809 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8810 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
8811 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8812 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
8813 IPR_USE_LONG_TRANSOP_TIMEOUT },
8814 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
8815 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
8816 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
8817 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
8818 IPR_USE_LONG_TRANSOP_TIMEOUT },
8819 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
8820 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
8821 IPR_USE_LONG_TRANSOP_TIMEOUT },
8822 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
8823 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
8824 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
8825 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
8826 IPR_USE_LONG_TRANSOP_TIMEOUT},
8827 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
8828 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
8829 IPR_USE_LONG_TRANSOP_TIMEOUT },
8830 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
8831 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
8832 IPR_USE_LONG_TRANSOP_TIMEOUT },
8833 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
8834 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
8835 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
8836 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
8837 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
8838 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
8839 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
8840 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
8841 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
8842 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
8843 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
8844 IPR_USE_LONG_TRANSOP_TIMEOUT },
8845 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
8846 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
8847 IPR_USE_LONG_TRANSOP_TIMEOUT },
8848 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
8849 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
8850 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
8851 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
8852 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
8853 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
8854 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8855 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
8856 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8857 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
8858 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8859 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
8860 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8861 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 },
8862 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8863 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
8864 { }
8865 };
8866 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
8867
8868 static struct pci_error_handlers ipr_err_handler = {
8869 .error_detected = ipr_pci_error_detected,
8870 .slot_reset = ipr_pci_slot_reset,
8871 };
8872
8873 static struct pci_driver ipr_driver = {
8874 .name = IPR_NAME,
8875 .id_table = ipr_pci_table,
8876 .probe = ipr_probe,
8877 .remove = __devexit_p(ipr_remove),
8878 .shutdown = ipr_shutdown,
8879 .err_handler = &ipr_err_handler,
8880 };
8881
8882 /**
8883 * ipr_halt_done - Shutdown prepare completion
8884 *
8885 * Return value:
8886 * none
8887 **/
8888 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
8889 {
8890 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8891
8892 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8893 }
8894
8895 /**
8896 * ipr_halt - Issue shutdown prepare to all adapters
8897 *
8898 * Return value:
8899 * NOTIFY_OK on success / NOTIFY_DONE on failure
8900 **/
8901 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
8902 {
8903 struct ipr_cmnd *ipr_cmd;
8904 struct ipr_ioa_cfg *ioa_cfg;
8905 unsigned long flags = 0;
8906
8907 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
8908 return NOTIFY_DONE;
8909
8910 spin_lock(&ipr_driver_lock);
8911
8912 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
8913 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8914 if (!ioa_cfg->allow_cmds) {
8915 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8916 continue;
8917 }
8918
8919 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
8920 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8921 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8922 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8923 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
8924
8925 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
8926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8927 }
8928 spin_unlock(&ipr_driver_lock);
8929
8930 return NOTIFY_OK;
8931 }
8932
8933 static struct notifier_block ipr_notifier = {
8934 ipr_halt, NULL, 0
8935 };
8936
8937 /**
8938 * ipr_init - Module entry point
8939 *
8940 * Return value:
8941 * 0 on success / negative value on failure
8942 **/
8943 static int __init ipr_init(void)
8944 {
8945 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
8946 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
8947
8948 register_reboot_notifier(&ipr_notifier);
8949 return pci_register_driver(&ipr_driver);
8950 }
8951
8952 /**
8953 * ipr_exit - Module unload
8954 *
8955 * Module unload entry point.
8956 *
8957 * Return value:
8958 * none
8959 **/
8960 static void __exit ipr_exit(void)
8961 {
8962 unregister_reboot_notifier(&ipr_notifier);
8963 pci_unregister_driver(&ipr_driver);
8964 }
8965
8966 module_init(ipr_init);
8967 module_exit(ipr_exit);
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