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Use dentry_path() to create full path to inode object
[pohmelfs.git] / drivers / scsi / ipr.c
blobb538f0883fd2e2314e76115936b606d38a79bc01
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/vmalloc.h>
64 #include <linux/ioport.h>
65 #include <linux/delay.h>
66 #include <linux/pci.h>
67 #include <linux/wait.h>
68 #include <linux/spinlock.h>
69 #include <linux/sched.h>
70 #include <linux/interrupt.h>
71 #include <linux/blkdev.h>
72 #include <linux/firmware.h>
73 #include <linux/module.h>
74 #include <linux/moduleparam.h>
75 #include <linux/libata.h>
76 #include <linux/hdreg.h>
77 #include <linux/reboot.h>
78 #include <linux/stringify.h>
79 #include <asm/io.h>
80 #include <asm/irq.h>
81 #include <asm/processor.h>
82 #include <scsi/scsi.h>
83 #include <scsi/scsi_host.h>
84 #include <scsi/scsi_tcq.h>
85 #include <scsi/scsi_eh.h>
86 #include <scsi/scsi_cmnd.h>
87 #include "ipr.h"
88
89 /*
90 * Global Data
91 */
92 static LIST_HEAD(ipr_ioa_head);
93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
94 static unsigned int ipr_max_speed = 1;
95 static int ipr_testmode = 0;
96 static unsigned int ipr_fastfail = 0;
97 static unsigned int ipr_transop_timeout = 0;
98 static unsigned int ipr_debug = 0;
99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
100 static unsigned int ipr_dual_ioa_raid = 1;
101 static DEFINE_SPINLOCK(ipr_driver_lock);
102
103 /* This table describes the differences between DMA controller chips */
104 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
105 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
106 .mailbox = 0x0042C,
107 .cache_line_size = 0x20,
108 {
109 .set_interrupt_mask_reg = 0x0022C,
110 .clr_interrupt_mask_reg = 0x00230,
111 .clr_interrupt_mask_reg32 = 0x00230,
112 .sense_interrupt_mask_reg = 0x0022C,
113 .sense_interrupt_mask_reg32 = 0x0022C,
114 .clr_interrupt_reg = 0x00228,
115 .clr_interrupt_reg32 = 0x00228,
116 .sense_interrupt_reg = 0x00224,
117 .sense_interrupt_reg32 = 0x00224,
118 .ioarrin_reg = 0x00404,
119 .sense_uproc_interrupt_reg = 0x00214,
120 .sense_uproc_interrupt_reg32 = 0x00214,
121 .set_uproc_interrupt_reg = 0x00214,
122 .set_uproc_interrupt_reg32 = 0x00214,
123 .clr_uproc_interrupt_reg = 0x00218,
124 .clr_uproc_interrupt_reg32 = 0x00218
125 }
126 },
127 { /* Snipe and Scamp */
128 .mailbox = 0x0052C,
129 .cache_line_size = 0x20,
130 {
131 .set_interrupt_mask_reg = 0x00288,
132 .clr_interrupt_mask_reg = 0x0028C,
133 .clr_interrupt_mask_reg32 = 0x0028C,
134 .sense_interrupt_mask_reg = 0x00288,
135 .sense_interrupt_mask_reg32 = 0x00288,
136 .clr_interrupt_reg = 0x00284,
137 .clr_interrupt_reg32 = 0x00284,
138 .sense_interrupt_reg = 0x00280,
139 .sense_interrupt_reg32 = 0x00280,
140 .ioarrin_reg = 0x00504,
141 .sense_uproc_interrupt_reg = 0x00290,
142 .sense_uproc_interrupt_reg32 = 0x00290,
143 .set_uproc_interrupt_reg = 0x00290,
144 .set_uproc_interrupt_reg32 = 0x00290,
145 .clr_uproc_interrupt_reg = 0x00294,
146 .clr_uproc_interrupt_reg32 = 0x00294
147 }
148 },
149 { /* CRoC */
150 .mailbox = 0x00044,
151 .cache_line_size = 0x20,
152 {
153 .set_interrupt_mask_reg = 0x00010,
154 .clr_interrupt_mask_reg = 0x00018,
155 .clr_interrupt_mask_reg32 = 0x0001C,
156 .sense_interrupt_mask_reg = 0x00010,
157 .sense_interrupt_mask_reg32 = 0x00014,
158 .clr_interrupt_reg = 0x00008,
159 .clr_interrupt_reg32 = 0x0000C,
160 .sense_interrupt_reg = 0x00000,
161 .sense_interrupt_reg32 = 0x00004,
162 .ioarrin_reg = 0x00070,
163 .sense_uproc_interrupt_reg = 0x00020,
164 .sense_uproc_interrupt_reg32 = 0x00024,
165 .set_uproc_interrupt_reg = 0x00020,
166 .set_uproc_interrupt_reg32 = 0x00024,
167 .clr_uproc_interrupt_reg = 0x00028,
168 .clr_uproc_interrupt_reg32 = 0x0002C,
169 .init_feedback_reg = 0x0005C,
170 .dump_addr_reg = 0x00064,
171 .dump_data_reg = 0x00068,
172 .endian_swap_reg = 0x00084
173 }
174 },
175 };
176
177 static const struct ipr_chip_t ipr_chip[] = {
178 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
179 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
180 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
183 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
184 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
186 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
187 };
188
189 static int ipr_max_bus_speeds [] = {
190 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
191 };
192
193 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
194 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
195 module_param_named(max_speed, ipr_max_speed, uint, 0);
196 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
197 module_param_named(log_level, ipr_log_level, uint, 0);
198 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
199 module_param_named(testmode, ipr_testmode, int, 0);
200 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
201 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
202 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
203 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
204 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
205 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
206 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
207 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
208 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
209 module_param_named(max_devs, ipr_max_devs, int, 0);
210 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
211 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
212 MODULE_LICENSE("GPL");
213 MODULE_VERSION(IPR_DRIVER_VERSION);
214
215 /* A constant array of IOASCs/URCs/Error Messages */
216 static const
217 struct ipr_error_table_t ipr_error_table[] = {
218 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
219 "8155: An unknown error was received"},
220 {0x00330000, 0, 0,
221 "Soft underlength error"},
222 {0x005A0000, 0, 0,
223 "Command to be cancelled not found"},
224 {0x00808000, 0, 0,
225 "Qualified success"},
226 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
227 "FFFE: Soft device bus error recovered by the IOA"},
228 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
229 "4101: Soft device bus fabric error"},
230 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
231 "FFFC: Logical block guard error recovered by the device"},
232 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
233 "FFFC: Logical block reference tag error recovered by the device"},
234 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
235 "4171: Recovered scatter list tag / sequence number error"},
236 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
237 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
238 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
239 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
240 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
241 "FFFD: Recovered logical block reference tag error detected by the IOA"},
242 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
243 "FFFD: Logical block guard error recovered by the IOA"},
244 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
245 "FFF9: Device sector reassign successful"},
246 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
247 "FFF7: Media error recovered by device rewrite procedures"},
248 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
249 "7001: IOA sector reassignment successful"},
250 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
251 "FFF9: Soft media error. Sector reassignment recommended"},
252 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FFF7: Media error recovered by IOA rewrite procedures"},
254 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
255 "FF3D: Soft PCI bus error recovered by the IOA"},
256 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
257 "FFF6: Device hardware error recovered by the IOA"},
258 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
259 "FFF6: Device hardware error recovered by the device"},
260 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
261 "FF3D: Soft IOA error recovered by the IOA"},
262 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
263 "FFFA: Undefined device response recovered by the IOA"},
264 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
265 "FFF6: Device bus error, message or command phase"},
266 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
267 "FFFE: Task Management Function failed"},
268 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
269 "FFF6: Failure prediction threshold exceeded"},
270 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
271 "8009: Impending cache battery pack failure"},
272 {0x02040400, 0, 0,
273 "34FF: Disk device format in progress"},
274 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
275 "9070: IOA requested reset"},
276 {0x023F0000, 0, 0,
277 "Synchronization required"},
278 {0x024E0000, 0, 0,
279 "No ready, IOA shutdown"},
280 {0x025A0000, 0, 0,
281 "Not ready, IOA has been shutdown"},
282 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
283 "3020: Storage subsystem configuration error"},
284 {0x03110B00, 0, 0,
285 "FFF5: Medium error, data unreadable, recommend reassign"},
286 {0x03110C00, 0, 0,
287 "7000: Medium error, data unreadable, do not reassign"},
288 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
289 "FFF3: Disk media format bad"},
290 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
291 "3002: Addressed device failed to respond to selection"},
292 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
293 "3100: Device bus error"},
294 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
295 "3109: IOA timed out a device command"},
296 {0x04088000, 0, 0,
297 "3120: SCSI bus is not operational"},
298 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
299 "4100: Hard device bus fabric error"},
300 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
301 "310C: Logical block guard error detected by the device"},
302 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
303 "310C: Logical block reference tag error detected by the device"},
304 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
305 "4170: Scatter list tag / sequence number error"},
306 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
307 "8150: Logical block CRC error on IOA to Host transfer"},
308 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
309 "4170: Logical block sequence number error on IOA to Host transfer"},
310 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
311 "310D: Logical block reference tag error detected by the IOA"},
312 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
313 "310D: Logical block guard error detected by the IOA"},
314 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
315 "9000: IOA reserved area data check"},
316 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
317 "9001: IOA reserved area invalid data pattern"},
318 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
319 "9002: IOA reserved area LRC error"},
320 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
321 "Hardware Error, IOA metadata access error"},
322 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
323 "102E: Out of alternate sectors for disk storage"},
324 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
325 "FFF4: Data transfer underlength error"},
326 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
327 "FFF4: Data transfer overlength error"},
328 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
329 "3400: Logical unit failure"},
330 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
331 "FFF4: Device microcode is corrupt"},
332 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
333 "8150: PCI bus error"},
334 {0x04430000, 1, 0,
335 "Unsupported device bus message received"},
336 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
337 "FFF4: Disk device problem"},
338 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
339 "8150: Permanent IOA failure"},
340 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
341 "3010: Disk device returned wrong response to IOA"},
342 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
343 "8151: IOA microcode error"},
344 {0x04448500, 0, 0,
345 "Device bus status error"},
346 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
347 "8157: IOA error requiring IOA reset to recover"},
348 {0x04448700, 0, 0,
349 "ATA device status error"},
350 {0x04490000, 0, 0,
351 "Message reject received from the device"},
352 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
353 "8008: A permanent cache battery pack failure occurred"},
354 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
355 "9090: Disk unit has been modified after the last known status"},
356 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
357 "9081: IOA detected device error"},
358 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
359 "9082: IOA detected device error"},
360 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
361 "3110: Device bus error, message or command phase"},
362 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
363 "3110: SAS Command / Task Management Function failed"},
364 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
365 "9091: Incorrect hardware configuration change has been detected"},
366 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
367 "9073: Invalid multi-adapter configuration"},
368 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
369 "4010: Incorrect connection between cascaded expanders"},
370 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
371 "4020: Connections exceed IOA design limits"},
372 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
373 "4030: Incorrect multipath connection"},
374 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
375 "4110: Unsupported enclosure function"},
376 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
377 "FFF4: Command to logical unit failed"},
378 {0x05240000, 1, 0,
379 "Illegal request, invalid request type or request packet"},
380 {0x05250000, 0, 0,
381 "Illegal request, invalid resource handle"},
382 {0x05258000, 0, 0,
383 "Illegal request, commands not allowed to this device"},
384 {0x05258100, 0, 0,
385 "Illegal request, command not allowed to a secondary adapter"},
386 {0x05258200, 0, 0,
387 "Illegal request, command not allowed to a non-optimized resource"},
388 {0x05260000, 0, 0,
389 "Illegal request, invalid field in parameter list"},
390 {0x05260100, 0, 0,
391 "Illegal request, parameter not supported"},
392 {0x05260200, 0, 0,
393 "Illegal request, parameter value invalid"},
394 {0x052C0000, 0, 0,
395 "Illegal request, command sequence error"},
396 {0x052C8000, 1, 0,
397 "Illegal request, dual adapter support not enabled"},
398 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
399 "9031: Array protection temporarily suspended, protection resuming"},
400 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
401 "9040: Array protection temporarily suspended, protection resuming"},
402 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
403 "3140: Device bus not ready to ready transition"},
404 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
405 "FFFB: SCSI bus was reset"},
406 {0x06290500, 0, 0,
407 "FFFE: SCSI bus transition to single ended"},
408 {0x06290600, 0, 0,
409 "FFFE: SCSI bus transition to LVD"},
410 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
411 "FFFB: SCSI bus was reset by another initiator"},
412 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
413 "3029: A device replacement has occurred"},
414 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
415 "9051: IOA cache data exists for a missing or failed device"},
416 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
417 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
418 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
419 "9025: Disk unit is not supported at its physical location"},
420 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
421 "3020: IOA detected a SCSI bus configuration error"},
422 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
423 "3150: SCSI bus configuration error"},
424 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
425 "9074: Asymmetric advanced function disk configuration"},
426 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
427 "4040: Incomplete multipath connection between IOA and enclosure"},
428 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
429 "4041: Incomplete multipath connection between enclosure and device"},
430 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
431 "9075: Incomplete multipath connection between IOA and remote IOA"},
432 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
433 "9076: Configuration error, missing remote IOA"},
434 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
435 "4050: Enclosure does not support a required multipath function"},
436 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
437 "4070: Logically bad block written on device"},
438 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
439 "9041: Array protection temporarily suspended"},
440 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
441 "9042: Corrupt array parity detected on specified device"},
442 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
443 "9030: Array no longer protected due to missing or failed disk unit"},
444 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
445 "9071: Link operational transition"},
446 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
447 "9072: Link not operational transition"},
448 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
449 "9032: Array exposed but still protected"},
450 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
451 "70DD: Device forced failed by disrupt device command"},
452 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
453 "4061: Multipath redundancy level got better"},
454 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
455 "4060: Multipath redundancy level got worse"},
456 {0x07270000, 0, 0,
457 "Failure due to other device"},
458 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
459 "9008: IOA does not support functions expected by devices"},
460 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
461 "9010: Cache data associated with attached devices cannot be found"},
462 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
463 "9011: Cache data belongs to devices other than those attached"},
464 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
465 "9020: Array missing 2 or more devices with only 1 device present"},
466 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
467 "9021: Array missing 2 or more devices with 2 or more devices present"},
468 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
469 "9022: Exposed array is missing a required device"},
470 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
471 "9023: Array member(s) not at required physical locations"},
472 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
473 "9024: Array not functional due to present hardware configuration"},
474 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
475 "9026: Array not functional due to present hardware configuration"},
476 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
477 "9027: Array is missing a device and parity is out of sync"},
478 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
479 "9028: Maximum number of arrays already exist"},
480 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
481 "9050: Required cache data cannot be located for a disk unit"},
482 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
483 "9052: Cache data exists for a device that has been modified"},
484 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
485 "9054: IOA resources not available due to previous problems"},
486 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
487 "9092: Disk unit requires initialization before use"},
488 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
489 "9029: Incorrect hardware configuration change has been detected"},
490 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
491 "9060: One or more disk pairs are missing from an array"},
492 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
493 "9061: One or more disks are missing from an array"},
494 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
495 "9062: One or more disks are missing from an array"},
496 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
497 "9063: Maximum number of functional arrays has been exceeded"},
498 {0x0B260000, 0, 0,
499 "Aborted command, invalid descriptor"},
500 {0x0B5A0000, 0, 0,
501 "Command terminated by host"}
502 };
503
504 static const struct ipr_ses_table_entry ipr_ses_table[] = {
505 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
506 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
507 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
508 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
509 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
510 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
511 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
512 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
513 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
514 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
515 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
516 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
517 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
518 };
519
520 /*
521 * Function Prototypes
522 */
523 static int ipr_reset_alert(struct ipr_cmnd *);
524 static void ipr_process_ccn(struct ipr_cmnd *);
525 static void ipr_process_error(struct ipr_cmnd *);
526 static void ipr_reset_ioa_job(struct ipr_cmnd *);
527 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
528 enum ipr_shutdown_type);
529
530 #ifdef CONFIG_SCSI_IPR_TRACE
531 /**
532 * ipr_trc_hook - Add a trace entry to the driver trace
533 * @ipr_cmd: ipr command struct
534 * @type: trace type
535 * @add_data: additional data
536 *
537 * Return value:
538 * none
539 **/
540 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
541 u8 type, u32 add_data)
542 {
543 struct ipr_trace_entry *trace_entry;
544 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
545
546 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
547 trace_entry->time = jiffies;
548 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
549 trace_entry->type = type;
550 if (ipr_cmd->ioa_cfg->sis64)
551 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
552 else
553 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
554 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
555 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
556 trace_entry->u.add_data = add_data;
557 }
558 #else
559 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
560 #endif
561
562 /**
563 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
564 * @ipr_cmd: ipr command struct
565 *
566 * Return value:
567 * none
568 **/
569 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
570 {
571 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
572 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
573 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
574 dma_addr_t dma_addr = ipr_cmd->dma_addr;
575
576 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
577 ioarcb->data_transfer_length = 0;
578 ioarcb->read_data_transfer_length = 0;
579 ioarcb->ioadl_len = 0;
580 ioarcb->read_ioadl_len = 0;
581
582 if (ipr_cmd->ioa_cfg->sis64) {
583 ioarcb->u.sis64_addr_data.data_ioadl_addr =
584 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
585 ioasa64->u.gata.status = 0;
586 } else {
587 ioarcb->write_ioadl_addr =
588 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
589 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
590 ioasa->u.gata.status = 0;
591 }
592
593 ioasa->hdr.ioasc = 0;
594 ioasa->hdr.residual_data_len = 0;
595 ipr_cmd->scsi_cmd = NULL;
596 ipr_cmd->qc = NULL;
597 ipr_cmd->sense_buffer[0] = 0;
598 ipr_cmd->dma_use_sg = 0;
599 }
600
601 /**
602 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
603 * @ipr_cmd: ipr command struct
604 *
605 * Return value:
606 * none
607 **/
608 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
609 {
610 ipr_reinit_ipr_cmnd(ipr_cmd);
611 ipr_cmd->u.scratch = 0;
612 ipr_cmd->sibling = NULL;
613 init_timer(&ipr_cmd->timer);
614 }
615
616 /**
617 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
618 * @ioa_cfg: ioa config struct
619 *
620 * Return value:
621 * pointer to ipr command struct
622 **/
623 static
624 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
625 {
626 struct ipr_cmnd *ipr_cmd;
627
628 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
629 list_del(&ipr_cmd->queue);
630 ipr_init_ipr_cmnd(ipr_cmd);
631
632 return ipr_cmd;
633 }
634
635 /**
636 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
637 * @ioa_cfg: ioa config struct
638 * @clr_ints: interrupts to clear
639 *
640 * This function masks all interrupts on the adapter, then clears the
641 * interrupts specified in the mask
642 *
643 * Return value:
644 * none
645 **/
646 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
647 u32 clr_ints)
648 {
649 volatile u32 int_reg;
650
651 /* Stop new interrupts */
652 ioa_cfg->allow_interrupts = 0;
653
654 /* Set interrupt mask to stop all new interrupts */
655 if (ioa_cfg->sis64)
656 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
657 else
658 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
659
660 /* Clear any pending interrupts */
661 if (ioa_cfg->sis64)
662 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
663 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
664 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
665 }
666
667 /**
668 * ipr_save_pcix_cmd_reg - Save PCI-X command register
669 * @ioa_cfg: ioa config struct
670 *
671 * Return value:
672 * 0 on success / -EIO on failure
673 **/
674 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
675 {
676 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
677
678 if (pcix_cmd_reg == 0)
679 return 0;
680
681 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
682 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
683 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
684 return -EIO;
685 }
686
687 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
688 return 0;
689 }
690
691 /**
692 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
693 * @ioa_cfg: ioa config struct
694 *
695 * Return value:
696 * 0 on success / -EIO on failure
697 **/
698 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
699 {
700 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
701
702 if (pcix_cmd_reg) {
703 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
704 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
705 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
706 return -EIO;
707 }
708 }
709
710 return 0;
711 }
712
713 /**
714 * ipr_sata_eh_done - done function for aborted SATA commands
715 * @ipr_cmd: ipr command struct
716 *
717 * This function is invoked for ops generated to SATA
718 * devices which are being aborted.
719 *
720 * Return value:
721 * none
722 **/
723 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
724 {
725 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
726 struct ata_queued_cmd *qc = ipr_cmd->qc;
727 struct ipr_sata_port *sata_port = qc->ap->private_data;
728
729 qc->err_mask |= AC_ERR_OTHER;
730 sata_port->ioasa.status |= ATA_BUSY;
731 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
732 ata_qc_complete(qc);
733 }
734
735 /**
736 * ipr_scsi_eh_done - mid-layer done function for aborted ops
737 * @ipr_cmd: ipr command struct
738 *
739 * This function is invoked by the interrupt handler for
740 * ops generated by the SCSI mid-layer which are being aborted.
741 *
742 * Return value:
743 * none
744 **/
745 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
746 {
747 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
748 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
749
750 scsi_cmd->result |= (DID_ERROR << 16);
751
752 scsi_dma_unmap(ipr_cmd->scsi_cmd);
753 scsi_cmd->scsi_done(scsi_cmd);
754 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
755 }
756
757 /**
758 * ipr_fail_all_ops - Fails all outstanding ops.
759 * @ioa_cfg: ioa config struct
760 *
761 * This function fails all outstanding ops.
762 *
763 * Return value:
764 * none
765 **/
766 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
767 {
768 struct ipr_cmnd *ipr_cmd, *temp;
769
770 ENTER;
771 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
772 list_del(&ipr_cmd->queue);
773
774 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
775 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
776
777 if (ipr_cmd->scsi_cmd)
778 ipr_cmd->done = ipr_scsi_eh_done;
779 else if (ipr_cmd->qc)
780 ipr_cmd->done = ipr_sata_eh_done;
781
782 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
783 del_timer(&ipr_cmd->timer);
784 ipr_cmd->done(ipr_cmd);
785 }
786
787 LEAVE;
788 }
789
790 /**
791 * ipr_send_command - Send driver initiated requests.
792 * @ipr_cmd: ipr command struct
793 *
794 * This function sends a command to the adapter using the correct write call.
795 * In the case of sis64, calculate the ioarcb size required. Then or in the
796 * appropriate bits.
797 *
798 * Return value:
799 * none
800 **/
801 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
802 {
803 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
804 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
805
806 if (ioa_cfg->sis64) {
807 /* The default size is 256 bytes */
808 send_dma_addr |= 0x1;
809
810 /* If the number of ioadls * size of ioadl > 128 bytes,
811 then use a 512 byte ioarcb */
812 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
813 send_dma_addr |= 0x4;
814 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
815 } else
816 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
817 }
818
819 /**
820 * ipr_do_req - Send driver initiated requests.
821 * @ipr_cmd: ipr command struct
822 * @done: done function
823 * @timeout_func: timeout function
824 * @timeout: timeout value
825 *
826 * This function sends the specified command to the adapter with the
827 * timeout given. The done function is invoked on command completion.
828 *
829 * Return value:
830 * none
831 **/
832 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
833 void (*done) (struct ipr_cmnd *),
834 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
835 {
836 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
837
838 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
839
840 ipr_cmd->done = done;
841
842 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
843 ipr_cmd->timer.expires = jiffies + timeout;
844 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
845
846 add_timer(&ipr_cmd->timer);
847
848 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
849
850 mb();
851
852 ipr_send_command(ipr_cmd);
853 }
854
855 /**
856 * ipr_internal_cmd_done - Op done function for an internally generated op.
857 * @ipr_cmd: ipr command struct
858 *
859 * This function is the op done function for an internally generated,
860 * blocking op. It simply wakes the sleeping thread.
861 *
862 * Return value:
863 * none
864 **/
865 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
866 {
867 if (ipr_cmd->sibling)
868 ipr_cmd->sibling = NULL;
869 else
870 complete(&ipr_cmd->completion);
871 }
872
873 /**
874 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
875 * @ipr_cmd: ipr command struct
876 * @dma_addr: dma address
877 * @len: transfer length
878 * @flags: ioadl flag value
879 *
880 * This function initializes an ioadl in the case where there is only a single
881 * descriptor.
882 *
883 * Return value:
884 * nothing
885 **/
886 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
887 u32 len, int flags)
888 {
889 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
890 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
891
892 ipr_cmd->dma_use_sg = 1;
893
894 if (ipr_cmd->ioa_cfg->sis64) {
895 ioadl64->flags = cpu_to_be32(flags);
896 ioadl64->data_len = cpu_to_be32(len);
897 ioadl64->address = cpu_to_be64(dma_addr);
898
899 ipr_cmd->ioarcb.ioadl_len =
900 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
901 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
902 } else {
903 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
904 ioadl->address = cpu_to_be32(dma_addr);
905
906 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
907 ipr_cmd->ioarcb.read_ioadl_len =
908 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
909 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
910 } else {
911 ipr_cmd->ioarcb.ioadl_len =
912 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
913 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
914 }
915 }
916 }
917
918 /**
919 * ipr_send_blocking_cmd - Send command and sleep on its completion.
920 * @ipr_cmd: ipr command struct
921 * @timeout_func: function to invoke if command times out
922 * @timeout: timeout
923 *
924 * Return value:
925 * none
926 **/
927 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
928 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
929 u32 timeout)
930 {
931 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
932
933 init_completion(&ipr_cmd->completion);
934 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
935
936 spin_unlock_irq(ioa_cfg->host->host_lock);
937 wait_for_completion(&ipr_cmd->completion);
938 spin_lock_irq(ioa_cfg->host->host_lock);
939 }
940
941 /**
942 * ipr_send_hcam - Send an HCAM to the adapter.
943 * @ioa_cfg: ioa config struct
944 * @type: HCAM type
945 * @hostrcb: hostrcb struct
946 *
947 * This function will send a Host Controlled Async command to the adapter.
948 * If HCAMs are currently not allowed to be issued to the adapter, it will
949 * place the hostrcb on the free queue.
950 *
951 * Return value:
952 * none
953 **/
954 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
955 struct ipr_hostrcb *hostrcb)
956 {
957 struct ipr_cmnd *ipr_cmd;
958 struct ipr_ioarcb *ioarcb;
959
960 if (ioa_cfg->allow_cmds) {
961 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
962 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
963 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
964
965 ipr_cmd->u.hostrcb = hostrcb;
966 ioarcb = &ipr_cmd->ioarcb;
967
968 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
969 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
970 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
971 ioarcb->cmd_pkt.cdb[1] = type;
972 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
973 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
974
975 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
976 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
977
978 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
979 ipr_cmd->done = ipr_process_ccn;
980 else
981 ipr_cmd->done = ipr_process_error;
982
983 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
984
985 mb();
986
987 ipr_send_command(ipr_cmd);
988 } else {
989 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
990 }
991 }
992
993 /**
994 * ipr_update_ata_class - Update the ata class in the resource entry
995 * @res: resource entry struct
996 * @proto: cfgte device bus protocol value
997 *
998 * Return value:
999 * none
1000 **/
1001 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1002 {
1003 switch(proto) {
1004 case IPR_PROTO_SATA:
1005 case IPR_PROTO_SAS_STP:
1006 res->ata_class = ATA_DEV_ATA;
1007 break;
1008 case IPR_PROTO_SATA_ATAPI:
1009 case IPR_PROTO_SAS_STP_ATAPI:
1010 res->ata_class = ATA_DEV_ATAPI;
1011 break;
1012 default:
1013 res->ata_class = ATA_DEV_UNKNOWN;
1014 break;
1015 };
1016 }
1017
1018 /**
1019 * ipr_init_res_entry - Initialize a resource entry struct.
1020 * @res: resource entry struct
1021 * @cfgtew: config table entry wrapper struct
1022 *
1023 * Return value:
1024 * none
1025 **/
1026 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1027 struct ipr_config_table_entry_wrapper *cfgtew)
1028 {
1029 int found = 0;
1030 unsigned int proto;
1031 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1032 struct ipr_resource_entry *gscsi_res = NULL;
1033
1034 res->needs_sync_complete = 0;
1035 res->in_erp = 0;
1036 res->add_to_ml = 0;
1037 res->del_from_ml = 0;
1038 res->resetting_device = 0;
1039 res->sdev = NULL;
1040 res->sata_port = NULL;
1041
1042 if (ioa_cfg->sis64) {
1043 proto = cfgtew->u.cfgte64->proto;
1044 res->res_flags = cfgtew->u.cfgte64->res_flags;
1045 res->qmodel = IPR_QUEUEING_MODEL64(res);
1046 res->type = cfgtew->u.cfgte64->res_type;
1047
1048 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1049 sizeof(res->res_path));
1050
1051 res->bus = 0;
1052 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1053 sizeof(res->dev_lun.scsi_lun));
1054 res->lun = scsilun_to_int(&res->dev_lun);
1055
1056 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1057 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1058 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1059 found = 1;
1060 res->target = gscsi_res->target;
1061 break;
1062 }
1063 }
1064 if (!found) {
1065 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1066 ioa_cfg->max_devs_supported);
1067 set_bit(res->target, ioa_cfg->target_ids);
1068 }
1069 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1070 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1071 res->target = 0;
1072 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1073 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1074 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1075 ioa_cfg->max_devs_supported);
1076 set_bit(res->target, ioa_cfg->array_ids);
1077 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1078 res->bus = IPR_VSET_VIRTUAL_BUS;
1079 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1080 ioa_cfg->max_devs_supported);
1081 set_bit(res->target, ioa_cfg->vset_ids);
1082 } else {
1083 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1084 ioa_cfg->max_devs_supported);
1085 set_bit(res->target, ioa_cfg->target_ids);
1086 }
1087 } else {
1088 proto = cfgtew->u.cfgte->proto;
1089 res->qmodel = IPR_QUEUEING_MODEL(res);
1090 res->flags = cfgtew->u.cfgte->flags;
1091 if (res->flags & IPR_IS_IOA_RESOURCE)
1092 res->type = IPR_RES_TYPE_IOAFP;
1093 else
1094 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1095
1096 res->bus = cfgtew->u.cfgte->res_addr.bus;
1097 res->target = cfgtew->u.cfgte->res_addr.target;
1098 res->lun = cfgtew->u.cfgte->res_addr.lun;
1099 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1100 }
1101
1102 ipr_update_ata_class(res, proto);
1103 }
1104
1105 /**
1106 * ipr_is_same_device - Determine if two devices are the same.
1107 * @res: resource entry struct
1108 * @cfgtew: config table entry wrapper struct
1109 *
1110 * Return value:
1111 * 1 if the devices are the same / 0 otherwise
1112 **/
1113 static int ipr_is_same_device(struct ipr_resource_entry *res,
1114 struct ipr_config_table_entry_wrapper *cfgtew)
1115 {
1116 if (res->ioa_cfg->sis64) {
1117 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1118 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1119 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1120 sizeof(cfgtew->u.cfgte64->lun))) {
1121 return 1;
1122 }
1123 } else {
1124 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1125 res->target == cfgtew->u.cfgte->res_addr.target &&
1126 res->lun == cfgtew->u.cfgte->res_addr.lun)
1127 return 1;
1128 }
1129
1130 return 0;
1131 }
1132
1133 /**
1134 * ipr_format_res_path - Format the resource path for printing.
1135 * @res_path: resource path
1136 * @buf: buffer
1137 *
1138 * Return value:
1139 * pointer to buffer
1140 **/
1141 static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
1142 {
1143 int i;
1144 char *p = buffer;
1145
1146 *p = '\0';
1147 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1148 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1149 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1150
1151 return buffer;
1152 }
1153
1154 /**
1155 * ipr_update_res_entry - Update the resource entry.
1156 * @res: resource entry struct
1157 * @cfgtew: config table entry wrapper struct
1158 *
1159 * Return value:
1160 * none
1161 **/
1162 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1163 struct ipr_config_table_entry_wrapper *cfgtew)
1164 {
1165 char buffer[IPR_MAX_RES_PATH_LENGTH];
1166 unsigned int proto;
1167 int new_path = 0;
1168
1169 if (res->ioa_cfg->sis64) {
1170 res->flags = cfgtew->u.cfgte64->flags;
1171 res->res_flags = cfgtew->u.cfgte64->res_flags;
1172 res->type = cfgtew->u.cfgte64->res_type;
1173
1174 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1175 sizeof(struct ipr_std_inq_data));
1176
1177 res->qmodel = IPR_QUEUEING_MODEL64(res);
1178 proto = cfgtew->u.cfgte64->proto;
1179 res->res_handle = cfgtew->u.cfgte64->res_handle;
1180 res->dev_id = cfgtew->u.cfgte64->dev_id;
1181
1182 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1183 sizeof(res->dev_lun.scsi_lun));
1184
1185 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1186 sizeof(res->res_path))) {
1187 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1188 sizeof(res->res_path));
1189 new_path = 1;
1190 }
1191
1192 if (res->sdev && new_path)
1193 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1194 ipr_format_res_path(res->res_path, buffer,
1195 sizeof(buffer)));
1196 } else {
1197 res->flags = cfgtew->u.cfgte->flags;
1198 if (res->flags & IPR_IS_IOA_RESOURCE)
1199 res->type = IPR_RES_TYPE_IOAFP;
1200 else
1201 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1202
1203 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1204 sizeof(struct ipr_std_inq_data));
1205
1206 res->qmodel = IPR_QUEUEING_MODEL(res);
1207 proto = cfgtew->u.cfgte->proto;
1208 res->res_handle = cfgtew->u.cfgte->res_handle;
1209 }
1210
1211 ipr_update_ata_class(res, proto);
1212 }
1213
1214 /**
1215 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1216 * for the resource.
1217 * @res: resource entry struct
1218 * @cfgtew: config table entry wrapper struct
1219 *
1220 * Return value:
1221 * none
1222 **/
1223 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1224 {
1225 struct ipr_resource_entry *gscsi_res = NULL;
1226 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1227
1228 if (!ioa_cfg->sis64)
1229 return;
1230
1231 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1232 clear_bit(res->target, ioa_cfg->array_ids);
1233 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1234 clear_bit(res->target, ioa_cfg->vset_ids);
1235 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1236 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1237 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1238 return;
1239 clear_bit(res->target, ioa_cfg->target_ids);
1240
1241 } else if (res->bus == 0)
1242 clear_bit(res->target, ioa_cfg->target_ids);
1243 }
1244
1245 /**
1246 * ipr_handle_config_change - Handle a config change from the adapter
1247 * @ioa_cfg: ioa config struct
1248 * @hostrcb: hostrcb
1249 *
1250 * Return value:
1251 * none
1252 **/
1253 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1254 struct ipr_hostrcb *hostrcb)
1255 {
1256 struct ipr_resource_entry *res = NULL;
1257 struct ipr_config_table_entry_wrapper cfgtew;
1258 __be32 cc_res_handle;
1259
1260 u32 is_ndn = 1;
1261
1262 if (ioa_cfg->sis64) {
1263 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1264 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1265 } else {
1266 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1267 cc_res_handle = cfgtew.u.cfgte->res_handle;
1268 }
1269
1270 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1271 if (res->res_handle == cc_res_handle) {
1272 is_ndn = 0;
1273 break;
1274 }
1275 }
1276
1277 if (is_ndn) {
1278 if (list_empty(&ioa_cfg->free_res_q)) {
1279 ipr_send_hcam(ioa_cfg,
1280 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1281 hostrcb);
1282 return;
1283 }
1284
1285 res = list_entry(ioa_cfg->free_res_q.next,
1286 struct ipr_resource_entry, queue);
1287
1288 list_del(&res->queue);
1289 ipr_init_res_entry(res, &cfgtew);
1290 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1291 }
1292
1293 ipr_update_res_entry(res, &cfgtew);
1294
1295 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1296 if (res->sdev) {
1297 res->del_from_ml = 1;
1298 res->res_handle = IPR_INVALID_RES_HANDLE;
1299 if (ioa_cfg->allow_ml_add_del)
1300 schedule_work(&ioa_cfg->work_q);
1301 } else {
1302 ipr_clear_res_target(res);
1303 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1304 }
1305 } else if (!res->sdev || res->del_from_ml) {
1306 res->add_to_ml = 1;
1307 if (ioa_cfg->allow_ml_add_del)
1308 schedule_work(&ioa_cfg->work_q);
1309 }
1310
1311 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1312 }
1313
1314 /**
1315 * ipr_process_ccn - Op done function for a CCN.
1316 * @ipr_cmd: ipr command struct
1317 *
1318 * This function is the op done function for a configuration
1319 * change notification host controlled async from the adapter.
1320 *
1321 * Return value:
1322 * none
1323 **/
1324 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1325 {
1326 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1327 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1328 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1329
1330 list_del(&hostrcb->queue);
1331 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1332
1333 if (ioasc) {
1334 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1335 dev_err(&ioa_cfg->pdev->dev,
1336 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1337
1338 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1339 } else {
1340 ipr_handle_config_change(ioa_cfg, hostrcb);
1341 }
1342 }
1343
1344 /**
1345 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1346 * @i: index into buffer
1347 * @buf: string to modify
1348 *
1349 * This function will strip all trailing whitespace, pad the end
1350 * of the string with a single space, and NULL terminate the string.
1351 *
1352 * Return value:
1353 * new length of string
1354 **/
1355 static int strip_and_pad_whitespace(int i, char *buf)
1356 {
1357 while (i && buf[i] == ' ')
1358 i--;
1359 buf[i+1] = ' ';
1360 buf[i+2] = '\0';
1361 return i + 2;
1362 }
1363
1364 /**
1365 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1366 * @prefix: string to print at start of printk
1367 * @hostrcb: hostrcb pointer
1368 * @vpd: vendor/product id/sn struct
1369 *
1370 * Return value:
1371 * none
1372 **/
1373 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1374 struct ipr_vpd *vpd)
1375 {
1376 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1377 int i = 0;
1378
1379 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1380 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1381
1382 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1383 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1384
1385 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1386 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1387
1388 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1389 }
1390
1391 /**
1392 * ipr_log_vpd - Log the passed VPD to the error log.
1393 * @vpd: vendor/product id/sn struct
1394 *
1395 * Return value:
1396 * none
1397 **/
1398 static void ipr_log_vpd(struct ipr_vpd *vpd)
1399 {
1400 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1401 + IPR_SERIAL_NUM_LEN];
1402
1403 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1404 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1405 IPR_PROD_ID_LEN);
1406 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1407 ipr_err("Vendor/Product ID: %s\n", buffer);
1408
1409 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1410 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1411 ipr_err(" Serial Number: %s\n", buffer);
1412 }
1413
1414 /**
1415 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1416 * @prefix: string to print at start of printk
1417 * @hostrcb: hostrcb pointer
1418 * @vpd: vendor/product id/sn/wwn struct
1419 *
1420 * Return value:
1421 * none
1422 **/
1423 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1424 struct ipr_ext_vpd *vpd)
1425 {
1426 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1427 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1428 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1429 }
1430
1431 /**
1432 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1433 * @vpd: vendor/product id/sn/wwn struct
1434 *
1435 * Return value:
1436 * none
1437 **/
1438 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1439 {
1440 ipr_log_vpd(&vpd->vpd);
1441 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1442 be32_to_cpu(vpd->wwid[1]));
1443 }
1444
1445 /**
1446 * ipr_log_enhanced_cache_error - Log a cache error.
1447 * @ioa_cfg: ioa config struct
1448 * @hostrcb: hostrcb struct
1449 *
1450 * Return value:
1451 * none
1452 **/
1453 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1454 struct ipr_hostrcb *hostrcb)
1455 {
1456 struct ipr_hostrcb_type_12_error *error;
1457
1458 if (ioa_cfg->sis64)
1459 error = &hostrcb->hcam.u.error64.u.type_12_error;
1460 else
1461 error = &hostrcb->hcam.u.error.u.type_12_error;
1462
1463 ipr_err("-----Current Configuration-----\n");
1464 ipr_err("Cache Directory Card Information:\n");
1465 ipr_log_ext_vpd(&error->ioa_vpd);
1466 ipr_err("Adapter Card Information:\n");
1467 ipr_log_ext_vpd(&error->cfc_vpd);
1468
1469 ipr_err("-----Expected Configuration-----\n");
1470 ipr_err("Cache Directory Card Information:\n");
1471 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1472 ipr_err("Adapter Card Information:\n");
1473 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1474
1475 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1476 be32_to_cpu(error->ioa_data[0]),
1477 be32_to_cpu(error->ioa_data[1]),
1478 be32_to_cpu(error->ioa_data[2]));
1479 }
1480
1481 /**
1482 * ipr_log_cache_error - Log a cache error.
1483 * @ioa_cfg: ioa config struct
1484 * @hostrcb: hostrcb struct
1485 *
1486 * Return value:
1487 * none
1488 **/
1489 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1490 struct ipr_hostrcb *hostrcb)
1491 {
1492 struct ipr_hostrcb_type_02_error *error =
1493 &hostrcb->hcam.u.error.u.type_02_error;
1494
1495 ipr_err("-----Current Configuration-----\n");
1496 ipr_err("Cache Directory Card Information:\n");
1497 ipr_log_vpd(&error->ioa_vpd);
1498 ipr_err("Adapter Card Information:\n");
1499 ipr_log_vpd(&error->cfc_vpd);
1500
1501 ipr_err("-----Expected Configuration-----\n");
1502 ipr_err("Cache Directory Card Information:\n");
1503 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1504 ipr_err("Adapter Card Information:\n");
1505 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1506
1507 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1508 be32_to_cpu(error->ioa_data[0]),
1509 be32_to_cpu(error->ioa_data[1]),
1510 be32_to_cpu(error->ioa_data[2]));
1511 }
1512
1513 /**
1514 * ipr_log_enhanced_config_error - Log a configuration error.
1515 * @ioa_cfg: ioa config struct
1516 * @hostrcb: hostrcb struct
1517 *
1518 * Return value:
1519 * none
1520 **/
1521 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1522 struct ipr_hostrcb *hostrcb)
1523 {
1524 int errors_logged, i;
1525 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1526 struct ipr_hostrcb_type_13_error *error;
1527
1528 error = &hostrcb->hcam.u.error.u.type_13_error;
1529 errors_logged = be32_to_cpu(error->errors_logged);
1530
1531 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1532 be32_to_cpu(error->errors_detected), errors_logged);
1533
1534 dev_entry = error->dev;
1535
1536 for (i = 0; i < errors_logged; i++, dev_entry++) {
1537 ipr_err_separator;
1538
1539 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1540 ipr_log_ext_vpd(&dev_entry->vpd);
1541
1542 ipr_err("-----New Device Information-----\n");
1543 ipr_log_ext_vpd(&dev_entry->new_vpd);
1544
1545 ipr_err("Cache Directory Card Information:\n");
1546 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1547
1548 ipr_err("Adapter Card Information:\n");
1549 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1550 }
1551 }
1552
1553 /**
1554 * ipr_log_sis64_config_error - Log a device error.
1555 * @ioa_cfg: ioa config struct
1556 * @hostrcb: hostrcb struct
1557 *
1558 * Return value:
1559 * none
1560 **/
1561 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1562 struct ipr_hostrcb *hostrcb)
1563 {
1564 int errors_logged, i;
1565 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1566 struct ipr_hostrcb_type_23_error *error;
1567 char buffer[IPR_MAX_RES_PATH_LENGTH];
1568
1569 error = &hostrcb->hcam.u.error64.u.type_23_error;
1570 errors_logged = be32_to_cpu(error->errors_logged);
1571
1572 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1573 be32_to_cpu(error->errors_detected), errors_logged);
1574
1575 dev_entry = error->dev;
1576
1577 for (i = 0; i < errors_logged; i++, dev_entry++) {
1578 ipr_err_separator;
1579
1580 ipr_err("Device %d : %s", i + 1,
1581 ipr_format_res_path(dev_entry->res_path, buffer,
1582 sizeof(buffer)));
1583 ipr_log_ext_vpd(&dev_entry->vpd);
1584
1585 ipr_err("-----New Device Information-----\n");
1586 ipr_log_ext_vpd(&dev_entry->new_vpd);
1587
1588 ipr_err("Cache Directory Card Information:\n");
1589 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1590
1591 ipr_err("Adapter Card Information:\n");
1592 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1593 }
1594 }
1595
1596 /**
1597 * ipr_log_config_error - Log a configuration error.
1598 * @ioa_cfg: ioa config struct
1599 * @hostrcb: hostrcb struct
1600 *
1601 * Return value:
1602 * none
1603 **/
1604 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1605 struct ipr_hostrcb *hostrcb)
1606 {
1607 int errors_logged, i;
1608 struct ipr_hostrcb_device_data_entry *dev_entry;
1609 struct ipr_hostrcb_type_03_error *error;
1610
1611 error = &hostrcb->hcam.u.error.u.type_03_error;
1612 errors_logged = be32_to_cpu(error->errors_logged);
1613
1614 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1615 be32_to_cpu(error->errors_detected), errors_logged);
1616
1617 dev_entry = error->dev;
1618
1619 for (i = 0; i < errors_logged; i++, dev_entry++) {
1620 ipr_err_separator;
1621
1622 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1623 ipr_log_vpd(&dev_entry->vpd);
1624
1625 ipr_err("-----New Device Information-----\n");
1626 ipr_log_vpd(&dev_entry->new_vpd);
1627
1628 ipr_err("Cache Directory Card Information:\n");
1629 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1630
1631 ipr_err("Adapter Card Information:\n");
1632 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1633
1634 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1635 be32_to_cpu(dev_entry->ioa_data[0]),
1636 be32_to_cpu(dev_entry->ioa_data[1]),
1637 be32_to_cpu(dev_entry->ioa_data[2]),
1638 be32_to_cpu(dev_entry->ioa_data[3]),
1639 be32_to_cpu(dev_entry->ioa_data[4]));
1640 }
1641 }
1642
1643 /**
1644 * ipr_log_enhanced_array_error - Log an array configuration error.
1645 * @ioa_cfg: ioa config struct
1646 * @hostrcb: hostrcb struct
1647 *
1648 * Return value:
1649 * none
1650 **/
1651 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1652 struct ipr_hostrcb *hostrcb)
1653 {
1654 int i, num_entries;
1655 struct ipr_hostrcb_type_14_error *error;
1656 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1657 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1658
1659 error = &hostrcb->hcam.u.error.u.type_14_error;
1660
1661 ipr_err_separator;
1662
1663 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1664 error->protection_level,
1665 ioa_cfg->host->host_no,
1666 error->last_func_vset_res_addr.bus,
1667 error->last_func_vset_res_addr.target,
1668 error->last_func_vset_res_addr.lun);
1669
1670 ipr_err_separator;
1671
1672 array_entry = error->array_member;
1673 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1674 ARRAY_SIZE(error->array_member));
1675
1676 for (i = 0; i < num_entries; i++, array_entry++) {
1677 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1678 continue;
1679
1680 if (be32_to_cpu(error->exposed_mode_adn) == i)
1681 ipr_err("Exposed Array Member %d:\n", i);
1682 else
1683 ipr_err("Array Member %d:\n", i);
1684
1685 ipr_log_ext_vpd(&array_entry->vpd);
1686 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1687 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1688 "Expected Location");
1689
1690 ipr_err_separator;
1691 }
1692 }
1693
1694 /**
1695 * ipr_log_array_error - Log an array configuration error.
1696 * @ioa_cfg: ioa config struct
1697 * @hostrcb: hostrcb struct
1698 *
1699 * Return value:
1700 * none
1701 **/
1702 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1703 struct ipr_hostrcb *hostrcb)
1704 {
1705 int i;
1706 struct ipr_hostrcb_type_04_error *error;
1707 struct ipr_hostrcb_array_data_entry *array_entry;
1708 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1709
1710 error = &hostrcb->hcam.u.error.u.type_04_error;
1711
1712 ipr_err_separator;
1713
1714 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1715 error->protection_level,
1716 ioa_cfg->host->host_no,
1717 error->last_func_vset_res_addr.bus,
1718 error->last_func_vset_res_addr.target,
1719 error->last_func_vset_res_addr.lun);
1720
1721 ipr_err_separator;
1722
1723 array_entry = error->array_member;
1724
1725 for (i = 0; i < 18; i++) {
1726 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1727 continue;
1728
1729 if (be32_to_cpu(error->exposed_mode_adn) == i)
1730 ipr_err("Exposed Array Member %d:\n", i);
1731 else
1732 ipr_err("Array Member %d:\n", i);
1733
1734 ipr_log_vpd(&array_entry->vpd);
1735
1736 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1737 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1738 "Expected Location");
1739
1740 ipr_err_separator;
1741
1742 if (i == 9)
1743 array_entry = error->array_member2;
1744 else
1745 array_entry++;
1746 }
1747 }
1748
1749 /**
1750 * ipr_log_hex_data - Log additional hex IOA error data.
1751 * @ioa_cfg: ioa config struct
1752 * @data: IOA error data
1753 * @len: data length
1754 *
1755 * Return value:
1756 * none
1757 **/
1758 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1759 {
1760 int i;
1761
1762 if (len == 0)
1763 return;
1764
1765 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1766 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1767
1768 for (i = 0; i < len / 4; i += 4) {
1769 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1770 be32_to_cpu(data[i]),
1771 be32_to_cpu(data[i+1]),
1772 be32_to_cpu(data[i+2]),
1773 be32_to_cpu(data[i+3]));
1774 }
1775 }
1776
1777 /**
1778 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1779 * @ioa_cfg: ioa config struct
1780 * @hostrcb: hostrcb struct
1781 *
1782 * Return value:
1783 * none
1784 **/
1785 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1786 struct ipr_hostrcb *hostrcb)
1787 {
1788 struct ipr_hostrcb_type_17_error *error;
1789
1790 if (ioa_cfg->sis64)
1791 error = &hostrcb->hcam.u.error64.u.type_17_error;
1792 else
1793 error = &hostrcb->hcam.u.error.u.type_17_error;
1794
1795 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1796 strim(error->failure_reason);
1797
1798 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1799 be32_to_cpu(hostrcb->hcam.u.error.prc));
1800 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1801 ipr_log_hex_data(ioa_cfg, error->data,
1802 be32_to_cpu(hostrcb->hcam.length) -
1803 (offsetof(struct ipr_hostrcb_error, u) +
1804 offsetof(struct ipr_hostrcb_type_17_error, data)));
1805 }
1806
1807 /**
1808 * ipr_log_dual_ioa_error - Log a dual adapter error.
1809 * @ioa_cfg: ioa config struct
1810 * @hostrcb: hostrcb struct
1811 *
1812 * Return value:
1813 * none
1814 **/
1815 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1816 struct ipr_hostrcb *hostrcb)
1817 {
1818 struct ipr_hostrcb_type_07_error *error;
1819
1820 error = &hostrcb->hcam.u.error.u.type_07_error;
1821 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1822 strim(error->failure_reason);
1823
1824 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1825 be32_to_cpu(hostrcb->hcam.u.error.prc));
1826 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1827 ipr_log_hex_data(ioa_cfg, error->data,
1828 be32_to_cpu(hostrcb->hcam.length) -
1829 (offsetof(struct ipr_hostrcb_error, u) +
1830 offsetof(struct ipr_hostrcb_type_07_error, data)));
1831 }
1832
1833 static const struct {
1834 u8 active;
1835 char *desc;
1836 } path_active_desc[] = {
1837 { IPR_PATH_NO_INFO, "Path" },
1838 { IPR_PATH_ACTIVE, "Active path" },
1839 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1840 };
1841
1842 static const struct {
1843 u8 state;
1844 char *desc;
1845 } path_state_desc[] = {
1846 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1847 { IPR_PATH_HEALTHY, "is healthy" },
1848 { IPR_PATH_DEGRADED, "is degraded" },
1849 { IPR_PATH_FAILED, "is failed" }
1850 };
1851
1852 /**
1853 * ipr_log_fabric_path - Log a fabric path error
1854 * @hostrcb: hostrcb struct
1855 * @fabric: fabric descriptor
1856 *
1857 * Return value:
1858 * none
1859 **/
1860 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1861 struct ipr_hostrcb_fabric_desc *fabric)
1862 {
1863 int i, j;
1864 u8 path_state = fabric->path_state;
1865 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1866 u8 state = path_state & IPR_PATH_STATE_MASK;
1867
1868 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1869 if (path_active_desc[i].active != active)
1870 continue;
1871
1872 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1873 if (path_state_desc[j].state != state)
1874 continue;
1875
1876 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1877 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1878 path_active_desc[i].desc, path_state_desc[j].desc,
1879 fabric->ioa_port);
1880 } else if (fabric->cascaded_expander == 0xff) {
1881 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1882 path_active_desc[i].desc, path_state_desc[j].desc,
1883 fabric->ioa_port, fabric->phy);
1884 } else if (fabric->phy == 0xff) {
1885 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1886 path_active_desc[i].desc, path_state_desc[j].desc,
1887 fabric->ioa_port, fabric->cascaded_expander);
1888 } else {
1889 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1890 path_active_desc[i].desc, path_state_desc[j].desc,
1891 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1892 }
1893 return;
1894 }
1895 }
1896
1897 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1898 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1899 }
1900
1901 /**
1902 * ipr_log64_fabric_path - Log a fabric path error
1903 * @hostrcb: hostrcb struct
1904 * @fabric: fabric descriptor
1905 *
1906 * Return value:
1907 * none
1908 **/
1909 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1910 struct ipr_hostrcb64_fabric_desc *fabric)
1911 {
1912 int i, j;
1913 u8 path_state = fabric->path_state;
1914 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1915 u8 state = path_state & IPR_PATH_STATE_MASK;
1916 char buffer[IPR_MAX_RES_PATH_LENGTH];
1917
1918 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1919 if (path_active_desc[i].active != active)
1920 continue;
1921
1922 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1923 if (path_state_desc[j].state != state)
1924 continue;
1925
1926 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
1927 path_active_desc[i].desc, path_state_desc[j].desc,
1928 ipr_format_res_path(fabric->res_path, buffer,
1929 sizeof(buffer)));
1930 return;
1931 }
1932 }
1933
1934 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
1935 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer)));
1936 }
1937
1938 static const struct {
1939 u8 type;
1940 char *desc;
1941 } path_type_desc[] = {
1942 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1943 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1944 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1945 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1946 };
1947
1948 static const struct {
1949 u8 status;
1950 char *desc;
1951 } path_status_desc[] = {
1952 { IPR_PATH_CFG_NO_PROB, "Functional" },
1953 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1954 { IPR_PATH_CFG_FAILED, "Failed" },
1955 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1956 { IPR_PATH_NOT_DETECTED, "Missing" },
1957 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1958 };
1959
1960 static const char *link_rate[] = {
1961 "unknown",
1962 "disabled",
1963 "phy reset problem",
1964 "spinup hold",
1965 "port selector",
1966 "unknown",
1967 "unknown",
1968 "unknown",
1969 "1.5Gbps",
1970 "3.0Gbps",
1971 "unknown",
1972 "unknown",
1973 "unknown",
1974 "unknown",
1975 "unknown",
1976 "unknown"
1977 };
1978
1979 /**
1980 * ipr_log_path_elem - Log a fabric path element.
1981 * @hostrcb: hostrcb struct
1982 * @cfg: fabric path element struct
1983 *
1984 * Return value:
1985 * none
1986 **/
1987 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1988 struct ipr_hostrcb_config_element *cfg)
1989 {
1990 int i, j;
1991 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1992 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1993
1994 if (type == IPR_PATH_CFG_NOT_EXIST)
1995 return;
1996
1997 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1998 if (path_type_desc[i].type != type)
1999 continue;
2000
2001 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2002 if (path_status_desc[j].status != status)
2003 continue;
2004
2005 if (type == IPR_PATH_CFG_IOA_PORT) {
2006 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2007 path_status_desc[j].desc, path_type_desc[i].desc,
2008 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2009 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2010 } else {
2011 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2012 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2013 path_status_desc[j].desc, path_type_desc[i].desc,
2014 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2015 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2016 } else if (cfg->cascaded_expander == 0xff) {
2017 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2018 "WWN=%08X%08X\n", path_status_desc[j].desc,
2019 path_type_desc[i].desc, cfg->phy,
2020 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2021 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2022 } else if (cfg->phy == 0xff) {
2023 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2024 "WWN=%08X%08X\n", path_status_desc[j].desc,
2025 path_type_desc[i].desc, cfg->cascaded_expander,
2026 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2027 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2028 } else {
2029 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2030 "WWN=%08X%08X\n", path_status_desc[j].desc,
2031 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2032 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2033 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2034 }
2035 }
2036 return;
2037 }
2038 }
2039
2040 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2041 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2042 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2043 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2044 }
2045
2046 /**
2047 * ipr_log64_path_elem - Log a fabric path element.
2048 * @hostrcb: hostrcb struct
2049 * @cfg: fabric path element struct
2050 *
2051 * Return value:
2052 * none
2053 **/
2054 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2055 struct ipr_hostrcb64_config_element *cfg)
2056 {
2057 int i, j;
2058 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2059 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2060 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2061 char buffer[IPR_MAX_RES_PATH_LENGTH];
2062
2063 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2064 return;
2065
2066 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2067 if (path_type_desc[i].type != type)
2068 continue;
2069
2070 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2071 if (path_status_desc[j].status != status)
2072 continue;
2073
2074 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2075 path_status_desc[j].desc, path_type_desc[i].desc,
2076 ipr_format_res_path(cfg->res_path, buffer,
2077 sizeof(buffer)),
2078 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2079 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2080 return;
2081 }
2082 }
2083 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2084 "WWN=%08X%08X\n", cfg->type_status,
2085 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)),
2086 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2087 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2088 }
2089
2090 /**
2091 * ipr_log_fabric_error - Log a fabric error.
2092 * @ioa_cfg: ioa config struct
2093 * @hostrcb: hostrcb struct
2094 *
2095 * Return value:
2096 * none
2097 **/
2098 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2099 struct ipr_hostrcb *hostrcb)
2100 {
2101 struct ipr_hostrcb_type_20_error *error;
2102 struct ipr_hostrcb_fabric_desc *fabric;
2103 struct ipr_hostrcb_config_element *cfg;
2104 int i, add_len;
2105
2106 error = &hostrcb->hcam.u.error.u.type_20_error;
2107 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2108 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2109
2110 add_len = be32_to_cpu(hostrcb->hcam.length) -
2111 (offsetof(struct ipr_hostrcb_error, u) +
2112 offsetof(struct ipr_hostrcb_type_20_error, desc));
2113
2114 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2115 ipr_log_fabric_path(hostrcb, fabric);
2116 for_each_fabric_cfg(fabric, cfg)
2117 ipr_log_path_elem(hostrcb, cfg);
2118
2119 add_len -= be16_to_cpu(fabric->length);
2120 fabric = (struct ipr_hostrcb_fabric_desc *)
2121 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2122 }
2123
2124 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2125 }
2126
2127 /**
2128 * ipr_log_sis64_array_error - Log a sis64 array error.
2129 * @ioa_cfg: ioa config struct
2130 * @hostrcb: hostrcb struct
2131 *
2132 * Return value:
2133 * none
2134 **/
2135 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_hostrcb *hostrcb)
2137 {
2138 int i, num_entries;
2139 struct ipr_hostrcb_type_24_error *error;
2140 struct ipr_hostrcb64_array_data_entry *array_entry;
2141 char buffer[IPR_MAX_RES_PATH_LENGTH];
2142 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2143
2144 error = &hostrcb->hcam.u.error64.u.type_24_error;
2145
2146 ipr_err_separator;
2147
2148 ipr_err("RAID %s Array Configuration: %s\n",
2149 error->protection_level,
2150 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer)));
2151
2152 ipr_err_separator;
2153
2154 array_entry = error->array_member;
2155 num_entries = min_t(u32, error->num_entries,
2156 ARRAY_SIZE(error->array_member));
2157
2158 for (i = 0; i < num_entries; i++, array_entry++) {
2159
2160 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2161 continue;
2162
2163 if (error->exposed_mode_adn == i)
2164 ipr_err("Exposed Array Member %d:\n", i);
2165 else
2166 ipr_err("Array Member %d:\n", i);
2167
2168 ipr_err("Array Member %d:\n", i);
2169 ipr_log_ext_vpd(&array_entry->vpd);
2170 ipr_err("Current Location: %s\n",
2171 ipr_format_res_path(array_entry->res_path, buffer,
2172 sizeof(buffer)));
2173 ipr_err("Expected Location: %s\n",
2174 ipr_format_res_path(array_entry->expected_res_path,
2175 buffer, sizeof(buffer)));
2176
2177 ipr_err_separator;
2178 }
2179 }
2180
2181 /**
2182 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2183 * @ioa_cfg: ioa config struct
2184 * @hostrcb: hostrcb struct
2185 *
2186 * Return value:
2187 * none
2188 **/
2189 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2190 struct ipr_hostrcb *hostrcb)
2191 {
2192 struct ipr_hostrcb_type_30_error *error;
2193 struct ipr_hostrcb64_fabric_desc *fabric;
2194 struct ipr_hostrcb64_config_element *cfg;
2195 int i, add_len;
2196
2197 error = &hostrcb->hcam.u.error64.u.type_30_error;
2198
2199 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2200 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2201
2202 add_len = be32_to_cpu(hostrcb->hcam.length) -
2203 (offsetof(struct ipr_hostrcb64_error, u) +
2204 offsetof(struct ipr_hostrcb_type_30_error, desc));
2205
2206 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2207 ipr_log64_fabric_path(hostrcb, fabric);
2208 for_each_fabric_cfg(fabric, cfg)
2209 ipr_log64_path_elem(hostrcb, cfg);
2210
2211 add_len -= be16_to_cpu(fabric->length);
2212 fabric = (struct ipr_hostrcb64_fabric_desc *)
2213 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2214 }
2215
2216 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2217 }
2218
2219 /**
2220 * ipr_log_generic_error - Log an adapter error.
2221 * @ioa_cfg: ioa config struct
2222 * @hostrcb: hostrcb struct
2223 *
2224 * Return value:
2225 * none
2226 **/
2227 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2228 struct ipr_hostrcb *hostrcb)
2229 {
2230 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2231 be32_to_cpu(hostrcb->hcam.length));
2232 }
2233
2234 /**
2235 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2236 * @ioasc: IOASC
2237 *
2238 * This function will return the index of into the ipr_error_table
2239 * for the specified IOASC. If the IOASC is not in the table,
2240 * 0 will be returned, which points to the entry used for unknown errors.
2241 *
2242 * Return value:
2243 * index into the ipr_error_table
2244 **/
2245 static u32 ipr_get_error(u32 ioasc)
2246 {
2247 int i;
2248
2249 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2250 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2251 return i;
2252
2253 return 0;
2254 }
2255
2256 /**
2257 * ipr_handle_log_data - Log an adapter error.
2258 * @ioa_cfg: ioa config struct
2259 * @hostrcb: hostrcb struct
2260 *
2261 * This function logs an adapter error to the system.
2262 *
2263 * Return value:
2264 * none
2265 **/
2266 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2267 struct ipr_hostrcb *hostrcb)
2268 {
2269 u32 ioasc;
2270 int error_index;
2271
2272 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2273 return;
2274
2275 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2276 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2277
2278 if (ioa_cfg->sis64)
2279 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2280 else
2281 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2282
2283 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2284 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2285 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2286 scsi_report_bus_reset(ioa_cfg->host,
2287 hostrcb->hcam.u.error.fd_res_addr.bus);
2288 }
2289
2290 error_index = ipr_get_error(ioasc);
2291
2292 if (!ipr_error_table[error_index].log_hcam)
2293 return;
2294
2295 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2296
2297 /* Set indication we have logged an error */
2298 ioa_cfg->errors_logged++;
2299
2300 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2301 return;
2302 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2303 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2304
2305 switch (hostrcb->hcam.overlay_id) {
2306 case IPR_HOST_RCB_OVERLAY_ID_2:
2307 ipr_log_cache_error(ioa_cfg, hostrcb);
2308 break;
2309 case IPR_HOST_RCB_OVERLAY_ID_3:
2310 ipr_log_config_error(ioa_cfg, hostrcb);
2311 break;
2312 case IPR_HOST_RCB_OVERLAY_ID_4:
2313 case IPR_HOST_RCB_OVERLAY_ID_6:
2314 ipr_log_array_error(ioa_cfg, hostrcb);
2315 break;
2316 case IPR_HOST_RCB_OVERLAY_ID_7:
2317 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2318 break;
2319 case IPR_HOST_RCB_OVERLAY_ID_12:
2320 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2321 break;
2322 case IPR_HOST_RCB_OVERLAY_ID_13:
2323 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2324 break;
2325 case IPR_HOST_RCB_OVERLAY_ID_14:
2326 case IPR_HOST_RCB_OVERLAY_ID_16:
2327 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2328 break;
2329 case IPR_HOST_RCB_OVERLAY_ID_17:
2330 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2331 break;
2332 case IPR_HOST_RCB_OVERLAY_ID_20:
2333 ipr_log_fabric_error(ioa_cfg, hostrcb);
2334 break;
2335 case IPR_HOST_RCB_OVERLAY_ID_23:
2336 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2337 break;
2338 case IPR_HOST_RCB_OVERLAY_ID_24:
2339 case IPR_HOST_RCB_OVERLAY_ID_26:
2340 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2341 break;
2342 case IPR_HOST_RCB_OVERLAY_ID_30:
2343 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2344 break;
2345 case IPR_HOST_RCB_OVERLAY_ID_1:
2346 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2347 default:
2348 ipr_log_generic_error(ioa_cfg, hostrcb);
2349 break;
2350 }
2351 }
2352
2353 /**
2354 * ipr_process_error - Op done function for an adapter error log.
2355 * @ipr_cmd: ipr command struct
2356 *
2357 * This function is the op done function for an error log host
2358 * controlled async from the adapter. It will log the error and
2359 * send the HCAM back to the adapter.
2360 *
2361 * Return value:
2362 * none
2363 **/
2364 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2365 {
2366 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2367 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2368 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2369 u32 fd_ioasc;
2370
2371 if (ioa_cfg->sis64)
2372 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2373 else
2374 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2375
2376 list_del(&hostrcb->queue);
2377 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2378
2379 if (!ioasc) {
2380 ipr_handle_log_data(ioa_cfg, hostrcb);
2381 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2382 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2383 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2384 dev_err(&ioa_cfg->pdev->dev,
2385 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2386 }
2387
2388 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2389 }
2390
2391 /**
2392 * ipr_timeout - An internally generated op has timed out.
2393 * @ipr_cmd: ipr command struct
2394 *
2395 * This function blocks host requests and initiates an
2396 * adapter reset.
2397 *
2398 * Return value:
2399 * none
2400 **/
2401 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2402 {
2403 unsigned long lock_flags = 0;
2404 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2405
2406 ENTER;
2407 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2408
2409 ioa_cfg->errors_logged++;
2410 dev_err(&ioa_cfg->pdev->dev,
2411 "Adapter being reset due to command timeout.\n");
2412
2413 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2414 ioa_cfg->sdt_state = GET_DUMP;
2415
2416 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2417 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2418
2419 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2420 LEAVE;
2421 }
2422
2423 /**
2424 * ipr_oper_timeout - Adapter timed out transitioning to operational
2425 * @ipr_cmd: ipr command struct
2426 *
2427 * This function blocks host requests and initiates an
2428 * adapter reset.
2429 *
2430 * Return value:
2431 * none
2432 **/
2433 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2434 {
2435 unsigned long lock_flags = 0;
2436 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2437
2438 ENTER;
2439 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2440
2441 ioa_cfg->errors_logged++;
2442 dev_err(&ioa_cfg->pdev->dev,
2443 "Adapter timed out transitioning to operational.\n");
2444
2445 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2446 ioa_cfg->sdt_state = GET_DUMP;
2447
2448 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2449 if (ipr_fastfail)
2450 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2451 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2452 }
2453
2454 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2455 LEAVE;
2456 }
2457
2458 /**
2459 * ipr_reset_reload - Reset/Reload the IOA
2460 * @ioa_cfg: ioa config struct
2461 * @shutdown_type: shutdown type
2462 *
2463 * This function resets the adapter and re-initializes it.
2464 * This function assumes that all new host commands have been stopped.
2465 * Return value:
2466 * SUCCESS / FAILED
2467 **/
2468 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
2469 enum ipr_shutdown_type shutdown_type)
2470 {
2471 if (!ioa_cfg->in_reset_reload)
2472 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
2473
2474 spin_unlock_irq(ioa_cfg->host->host_lock);
2475 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2476 spin_lock_irq(ioa_cfg->host->host_lock);
2477
2478 /* If we got hit with a host reset while we were already resetting
2479 the adapter for some reason, and the reset failed. */
2480 if (ioa_cfg->ioa_is_dead) {
2481 ipr_trace;
2482 return FAILED;
2483 }
2484
2485 return SUCCESS;
2486 }
2487
2488 /**
2489 * ipr_find_ses_entry - Find matching SES in SES table
2490 * @res: resource entry struct of SES
2491 *
2492 * Return value:
2493 * pointer to SES table entry / NULL on failure
2494 **/
2495 static const struct ipr_ses_table_entry *
2496 ipr_find_ses_entry(struct ipr_resource_entry *res)
2497 {
2498 int i, j, matches;
2499 struct ipr_std_inq_vpids *vpids;
2500 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2501
2502 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2503 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2504 if (ste->compare_product_id_byte[j] == 'X') {
2505 vpids = &res->std_inq_data.vpids;
2506 if (vpids->product_id[j] == ste->product_id[j])
2507 matches++;
2508 else
2509 break;
2510 } else
2511 matches++;
2512 }
2513
2514 if (matches == IPR_PROD_ID_LEN)
2515 return ste;
2516 }
2517
2518 return NULL;
2519 }
2520
2521 /**
2522 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2523 * @ioa_cfg: ioa config struct
2524 * @bus: SCSI bus
2525 * @bus_width: bus width
2526 *
2527 * Return value:
2528 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2529 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2530 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2531 * max 160MHz = max 320MB/sec).
2532 **/
2533 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2534 {
2535 struct ipr_resource_entry *res;
2536 const struct ipr_ses_table_entry *ste;
2537 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2538
2539 /* Loop through each config table entry in the config table buffer */
2540 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2541 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2542 continue;
2543
2544 if (bus != res->bus)
2545 continue;
2546
2547 if (!(ste = ipr_find_ses_entry(res)))
2548 continue;
2549
2550 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2551 }
2552
2553 return max_xfer_rate;
2554 }
2555
2556 /**
2557 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2558 * @ioa_cfg: ioa config struct
2559 * @max_delay: max delay in micro-seconds to wait
2560 *
2561 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2562 *
2563 * Return value:
2564 * 0 on success / other on failure
2565 **/
2566 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2567 {
2568 volatile u32 pcii_reg;
2569 int delay = 1;
2570
2571 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2572 while (delay < max_delay) {
2573 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2574
2575 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2576 return 0;
2577
2578 /* udelay cannot be used if delay is more than a few milliseconds */
2579 if ((delay / 1000) > MAX_UDELAY_MS)
2580 mdelay(delay / 1000);
2581 else
2582 udelay(delay);
2583
2584 delay += delay;
2585 }
2586 return -EIO;
2587 }
2588
2589 /**
2590 * ipr_get_sis64_dump_data_section - Dump IOA memory
2591 * @ioa_cfg: ioa config struct
2592 * @start_addr: adapter address to dump
2593 * @dest: destination kernel buffer
2594 * @length_in_words: length to dump in 4 byte words
2595 *
2596 * Return value:
2597 * 0 on success
2598 **/
2599 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2600 u32 start_addr,
2601 __be32 *dest, u32 length_in_words)
2602 {
2603 int i;
2604
2605 for (i = 0; i < length_in_words; i++) {
2606 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2607 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2608 dest++;
2609 }
2610
2611 return 0;
2612 }
2613
2614 /**
2615 * ipr_get_ldump_data_section - Dump IOA memory
2616 * @ioa_cfg: ioa config struct
2617 * @start_addr: adapter address to dump
2618 * @dest: destination kernel buffer
2619 * @length_in_words: length to dump in 4 byte words
2620 *
2621 * Return value:
2622 * 0 on success / -EIO on failure
2623 **/
2624 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2625 u32 start_addr,
2626 __be32 *dest, u32 length_in_words)
2627 {
2628 volatile u32 temp_pcii_reg;
2629 int i, delay = 0;
2630
2631 if (ioa_cfg->sis64)
2632 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2633 dest, length_in_words);
2634
2635 /* Write IOA interrupt reg starting LDUMP state */
2636 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2637 ioa_cfg->regs.set_uproc_interrupt_reg32);
2638
2639 /* Wait for IO debug acknowledge */
2640 if (ipr_wait_iodbg_ack(ioa_cfg,
2641 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2642 dev_err(&ioa_cfg->pdev->dev,
2643 "IOA dump long data transfer timeout\n");
2644 return -EIO;
2645 }
2646
2647 /* Signal LDUMP interlocked - clear IO debug ack */
2648 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2649 ioa_cfg->regs.clr_interrupt_reg);
2650
2651 /* Write Mailbox with starting address */
2652 writel(start_addr, ioa_cfg->ioa_mailbox);
2653
2654 /* Signal address valid - clear IOA Reset alert */
2655 writel(IPR_UPROCI_RESET_ALERT,
2656 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2657
2658 for (i = 0; i < length_in_words; i++) {
2659 /* Wait for IO debug acknowledge */
2660 if (ipr_wait_iodbg_ack(ioa_cfg,
2661 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2662 dev_err(&ioa_cfg->pdev->dev,
2663 "IOA dump short data transfer timeout\n");
2664 return -EIO;
2665 }
2666
2667 /* Read data from mailbox and increment destination pointer */
2668 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2669 dest++;
2670
2671 /* For all but the last word of data, signal data received */
2672 if (i < (length_in_words - 1)) {
2673 /* Signal dump data received - Clear IO debug Ack */
2674 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2675 ioa_cfg->regs.clr_interrupt_reg);
2676 }
2677 }
2678
2679 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2680 writel(IPR_UPROCI_RESET_ALERT,
2681 ioa_cfg->regs.set_uproc_interrupt_reg32);
2682
2683 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2684 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2685
2686 /* Signal dump data received - Clear IO debug Ack */
2687 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2688 ioa_cfg->regs.clr_interrupt_reg);
2689
2690 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2691 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2692 temp_pcii_reg =
2693 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2694
2695 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2696 return 0;
2697
2698 udelay(10);
2699 delay += 10;
2700 }
2701
2702 return 0;
2703 }
2704
2705 #ifdef CONFIG_SCSI_IPR_DUMP
2706 /**
2707 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2708 * @ioa_cfg: ioa config struct
2709 * @pci_address: adapter address
2710 * @length: length of data to copy
2711 *
2712 * Copy data from PCI adapter to kernel buffer.
2713 * Note: length MUST be a 4 byte multiple
2714 * Return value:
2715 * 0 on success / other on failure
2716 **/
2717 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2718 unsigned long pci_address, u32 length)
2719 {
2720 int bytes_copied = 0;
2721 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2722 __be32 *page;
2723 unsigned long lock_flags = 0;
2724 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2725
2726 if (ioa_cfg->sis64)
2727 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2728 else
2729 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2730
2731 while (bytes_copied < length &&
2732 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2733 if (ioa_dump->page_offset >= PAGE_SIZE ||
2734 ioa_dump->page_offset == 0) {
2735 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2736
2737 if (!page) {
2738 ipr_trace;
2739 return bytes_copied;
2740 }
2741
2742 ioa_dump->page_offset = 0;
2743 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2744 ioa_dump->next_page_index++;
2745 } else
2746 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2747
2748 rem_len = length - bytes_copied;
2749 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2750 cur_len = min(rem_len, rem_page_len);
2751
2752 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2753 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2754 rc = -EIO;
2755 } else {
2756 rc = ipr_get_ldump_data_section(ioa_cfg,
2757 pci_address + bytes_copied,
2758 &page[ioa_dump->page_offset / 4],
2759 (cur_len / sizeof(u32)));
2760 }
2761 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2762
2763 if (!rc) {
2764 ioa_dump->page_offset += cur_len;
2765 bytes_copied += cur_len;
2766 } else {
2767 ipr_trace;
2768 break;
2769 }
2770 schedule();
2771 }
2772
2773 return bytes_copied;
2774 }
2775
2776 /**
2777 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2778 * @hdr: dump entry header struct
2779 *
2780 * Return value:
2781 * nothing
2782 **/
2783 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2784 {
2785 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2786 hdr->num_elems = 1;
2787 hdr->offset = sizeof(*hdr);
2788 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2789 }
2790
2791 /**
2792 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2793 * @ioa_cfg: ioa config struct
2794 * @driver_dump: driver dump struct
2795 *
2796 * Return value:
2797 * nothing
2798 **/
2799 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2800 struct ipr_driver_dump *driver_dump)
2801 {
2802 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2803
2804 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2805 driver_dump->ioa_type_entry.hdr.len =
2806 sizeof(struct ipr_dump_ioa_type_entry) -
2807 sizeof(struct ipr_dump_entry_header);
2808 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2809 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2810 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2811 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2812 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2813 ucode_vpd->minor_release[1];
2814 driver_dump->hdr.num_entries++;
2815 }
2816
2817 /**
2818 * ipr_dump_version_data - Fill in the driver version in the dump.
2819 * @ioa_cfg: ioa config struct
2820 * @driver_dump: driver dump struct
2821 *
2822 * Return value:
2823 * nothing
2824 **/
2825 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2826 struct ipr_driver_dump *driver_dump)
2827 {
2828 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2829 driver_dump->version_entry.hdr.len =
2830 sizeof(struct ipr_dump_version_entry) -
2831 sizeof(struct ipr_dump_entry_header);
2832 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2833 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2834 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2835 driver_dump->hdr.num_entries++;
2836 }
2837
2838 /**
2839 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2840 * @ioa_cfg: ioa config struct
2841 * @driver_dump: driver dump struct
2842 *
2843 * Return value:
2844 * nothing
2845 **/
2846 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2847 struct ipr_driver_dump *driver_dump)
2848 {
2849 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2850 driver_dump->trace_entry.hdr.len =
2851 sizeof(struct ipr_dump_trace_entry) -
2852 sizeof(struct ipr_dump_entry_header);
2853 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2854 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2855 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2856 driver_dump->hdr.num_entries++;
2857 }
2858
2859 /**
2860 * ipr_dump_location_data - Fill in the IOA location in the dump.
2861 * @ioa_cfg: ioa config struct
2862 * @driver_dump: driver dump struct
2863 *
2864 * Return value:
2865 * nothing
2866 **/
2867 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2868 struct ipr_driver_dump *driver_dump)
2869 {
2870 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2871 driver_dump->location_entry.hdr.len =
2872 sizeof(struct ipr_dump_location_entry) -
2873 sizeof(struct ipr_dump_entry_header);
2874 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2875 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2876 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2877 driver_dump->hdr.num_entries++;
2878 }
2879
2880 /**
2881 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2882 * @ioa_cfg: ioa config struct
2883 * @dump: dump struct
2884 *
2885 * Return value:
2886 * nothing
2887 **/
2888 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2889 {
2890 unsigned long start_addr, sdt_word;
2891 unsigned long lock_flags = 0;
2892 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2893 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2894 u32 num_entries, max_num_entries, start_off, end_off;
2895 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
2896 struct ipr_sdt *sdt;
2897 int valid = 1;
2898 int i;
2899
2900 ENTER;
2901
2902 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2903
2904 if (ioa_cfg->sdt_state != READ_DUMP) {
2905 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2906 return;
2907 }
2908
2909 if (ioa_cfg->sis64) {
2910 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2911 ssleep(IPR_DUMP_DELAY_SECONDS);
2912 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2913 }
2914
2915 start_addr = readl(ioa_cfg->ioa_mailbox);
2916
2917 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
2918 dev_err(&ioa_cfg->pdev->dev,
2919 "Invalid dump table format: %lx\n", start_addr);
2920 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2921 return;
2922 }
2923
2924 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2925
2926 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2927
2928 /* Initialize the overall dump header */
2929 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2930 driver_dump->hdr.num_entries = 1;
2931 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2932 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2933 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2934 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2935
2936 ipr_dump_version_data(ioa_cfg, driver_dump);
2937 ipr_dump_location_data(ioa_cfg, driver_dump);
2938 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2939 ipr_dump_trace_data(ioa_cfg, driver_dump);
2940
2941 /* Update dump_header */
2942 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2943
2944 /* IOA Dump entry */
2945 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2946 ioa_dump->hdr.len = 0;
2947 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2948 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2949
2950 /* First entries in sdt are actually a list of dump addresses and
2951 lengths to gather the real dump data. sdt represents the pointer
2952 to the ioa generated dump table. Dump data will be extracted based
2953 on entries in this table */
2954 sdt = &ioa_dump->sdt;
2955
2956 if (ioa_cfg->sis64) {
2957 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
2958 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2959 } else {
2960 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
2961 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2962 }
2963
2964 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
2965 (max_num_entries * sizeof(struct ipr_sdt_entry));
2966 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2967 bytes_to_copy / sizeof(__be32));
2968
2969 /* Smart Dump table is ready to use and the first entry is valid */
2970 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2971 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
2972 dev_err(&ioa_cfg->pdev->dev,
2973 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2974 rc, be32_to_cpu(sdt->hdr.state));
2975 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2976 ioa_cfg->sdt_state = DUMP_OBTAINED;
2977 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2978 return;
2979 }
2980
2981 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2982
2983 if (num_entries > max_num_entries)
2984 num_entries = max_num_entries;
2985
2986 /* Update dump length to the actual data to be copied */
2987 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
2988 if (ioa_cfg->sis64)
2989 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
2990 else
2991 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
2992
2993 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2994
2995 for (i = 0; i < num_entries; i++) {
2996 if (ioa_dump->hdr.len > max_dump_size) {
2997 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2998 break;
2999 }
3000
3001 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3002 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3003 if (ioa_cfg->sis64)
3004 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3005 else {
3006 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3007 end_off = be32_to_cpu(sdt->entry[i].end_token);
3008
3009 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3010 bytes_to_copy = end_off - start_off;
3011 else
3012 valid = 0;
3013 }
3014 if (valid) {
3015 if (bytes_to_copy > max_dump_size) {
3016 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3017 continue;
3018 }
3019
3020 /* Copy data from adapter to driver buffers */
3021 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3022 bytes_to_copy);
3023
3024 ioa_dump->hdr.len += bytes_copied;
3025
3026 if (bytes_copied != bytes_to_copy) {
3027 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3028 break;
3029 }
3030 }
3031 }
3032 }
3033
3034 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3035
3036 /* Update dump_header */
3037 driver_dump->hdr.len += ioa_dump->hdr.len;
3038 wmb();
3039 ioa_cfg->sdt_state = DUMP_OBTAINED;
3040 LEAVE;
3041 }
3042
3043 #else
3044 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3045 #endif
3046
3047 /**
3048 * ipr_release_dump - Free adapter dump memory
3049 * @kref: kref struct
3050 *
3051 * Return value:
3052 * nothing
3053 **/
3054 static void ipr_release_dump(struct kref *kref)
3055 {
3056 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3057 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3058 unsigned long lock_flags = 0;
3059 int i;
3060
3061 ENTER;
3062 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3063 ioa_cfg->dump = NULL;
3064 ioa_cfg->sdt_state = INACTIVE;
3065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3066
3067 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3068 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3069
3070 vfree(dump->ioa_dump.ioa_data);
3071 kfree(dump);
3072 LEAVE;
3073 }
3074
3075 /**
3076 * ipr_worker_thread - Worker thread
3077 * @work: ioa config struct
3078 *
3079 * Called at task level from a work thread. This function takes care
3080 * of adding and removing device from the mid-layer as configuration
3081 * changes are detected by the adapter.
3082 *
3083 * Return value:
3084 * nothing
3085 **/
3086 static void ipr_worker_thread(struct work_struct *work)
3087 {
3088 unsigned long lock_flags;
3089 struct ipr_resource_entry *res;
3090 struct scsi_device *sdev;
3091 struct ipr_dump *dump;
3092 struct ipr_ioa_cfg *ioa_cfg =
3093 container_of(work, struct ipr_ioa_cfg, work_q);
3094 u8 bus, target, lun;
3095 int did_work;
3096
3097 ENTER;
3098 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3099
3100 if (ioa_cfg->sdt_state == READ_DUMP) {
3101 dump = ioa_cfg->dump;
3102 if (!dump) {
3103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3104 return;
3105 }
3106 kref_get(&dump->kref);
3107 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3108 ipr_get_ioa_dump(ioa_cfg, dump);
3109 kref_put(&dump->kref, ipr_release_dump);
3110
3111 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3112 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3113 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3114 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3115 return;
3116 }
3117
3118 restart:
3119 do {
3120 did_work = 0;
3121 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3122 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3123 return;
3124 }
3125
3126 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3127 if (res->del_from_ml && res->sdev) {
3128 did_work = 1;
3129 sdev = res->sdev;
3130 if (!scsi_device_get(sdev)) {
3131 if (!res->add_to_ml)
3132 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3133 else
3134 res->del_from_ml = 0;
3135 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3136 scsi_remove_device(sdev);
3137 scsi_device_put(sdev);
3138 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3139 }
3140 break;
3141 }
3142 }
3143 } while(did_work);
3144
3145 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3146 if (res->add_to_ml) {
3147 bus = res->bus;
3148 target = res->target;
3149 lun = res->lun;
3150 res->add_to_ml = 0;
3151 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3152 scsi_add_device(ioa_cfg->host, bus, target, lun);
3153 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3154 goto restart;
3155 }
3156 }
3157
3158 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3159 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3160 LEAVE;
3161 }
3162
3163 #ifdef CONFIG_SCSI_IPR_TRACE
3164 /**
3165 * ipr_read_trace - Dump the adapter trace
3166 * @filp: open sysfs file
3167 * @kobj: kobject struct
3168 * @bin_attr: bin_attribute struct
3169 * @buf: buffer
3170 * @off: offset
3171 * @count: buffer size
3172 *
3173 * Return value:
3174 * number of bytes printed to buffer
3175 **/
3176 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3177 struct bin_attribute *bin_attr,
3178 char *buf, loff_t off, size_t count)
3179 {
3180 struct device *dev = container_of(kobj, struct device, kobj);
3181 struct Scsi_Host *shost = class_to_shost(dev);
3182 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3183 unsigned long lock_flags = 0;
3184 ssize_t ret;
3185
3186 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3187 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3188 IPR_TRACE_SIZE);
3189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3190
3191 return ret;
3192 }
3193
3194 static struct bin_attribute ipr_trace_attr = {
3195 .attr = {
3196 .name = "trace",
3197 .mode = S_IRUGO,
3198 },
3199 .size = 0,
3200 .read = ipr_read_trace,
3201 };
3202 #endif
3203
3204 /**
3205 * ipr_show_fw_version - Show the firmware version
3206 * @dev: class device struct
3207 * @buf: buffer
3208 *
3209 * Return value:
3210 * number of bytes printed to buffer
3211 **/
3212 static ssize_t ipr_show_fw_version(struct device *dev,
3213 struct device_attribute *attr, char *buf)
3214 {
3215 struct Scsi_Host *shost = class_to_shost(dev);
3216 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3217 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3218 unsigned long lock_flags = 0;
3219 int len;
3220
3221 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3222 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3223 ucode_vpd->major_release, ucode_vpd->card_type,
3224 ucode_vpd->minor_release[0],
3225 ucode_vpd->minor_release[1]);
3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3227 return len;
3228 }
3229
3230 static struct device_attribute ipr_fw_version_attr = {
3231 .attr = {
3232 .name = "fw_version",
3233 .mode = S_IRUGO,
3234 },
3235 .show = ipr_show_fw_version,
3236 };
3237
3238 /**
3239 * ipr_show_log_level - Show the adapter's error logging level
3240 * @dev: class device struct
3241 * @buf: buffer
3242 *
3243 * Return value:
3244 * number of bytes printed to buffer
3245 **/
3246 static ssize_t ipr_show_log_level(struct device *dev,
3247 struct device_attribute *attr, char *buf)
3248 {
3249 struct Scsi_Host *shost = class_to_shost(dev);
3250 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3251 unsigned long lock_flags = 0;
3252 int len;
3253
3254 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3255 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3256 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3257 return len;
3258 }
3259
3260 /**
3261 * ipr_store_log_level - Change the adapter's error logging level
3262 * @dev: class device struct
3263 * @buf: buffer
3264 *
3265 * Return value:
3266 * number of bytes printed to buffer
3267 **/
3268 static ssize_t ipr_store_log_level(struct device *dev,
3269 struct device_attribute *attr,
3270 const char *buf, size_t count)
3271 {
3272 struct Scsi_Host *shost = class_to_shost(dev);
3273 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3274 unsigned long lock_flags = 0;
3275
3276 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3277 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3278 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3279 return strlen(buf);
3280 }
3281
3282 static struct device_attribute ipr_log_level_attr = {
3283 .attr = {
3284 .name = "log_level",
3285 .mode = S_IRUGO | S_IWUSR,
3286 },
3287 .show = ipr_show_log_level,
3288 .store = ipr_store_log_level
3289 };
3290
3291 /**
3292 * ipr_store_diagnostics - IOA Diagnostics interface
3293 * @dev: device struct
3294 * @buf: buffer
3295 * @count: buffer size
3296 *
3297 * This function will reset the adapter and wait a reasonable
3298 * amount of time for any errors that the adapter might log.
3299 *
3300 * Return value:
3301 * count on success / other on failure
3302 **/
3303 static ssize_t ipr_store_diagnostics(struct device *dev,
3304 struct device_attribute *attr,
3305 const char *buf, size_t count)
3306 {
3307 struct Scsi_Host *shost = class_to_shost(dev);
3308 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3309 unsigned long lock_flags = 0;
3310 int rc = count;
3311
3312 if (!capable(CAP_SYS_ADMIN))
3313 return -EACCES;
3314
3315 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3316 while(ioa_cfg->in_reset_reload) {
3317 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3318 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3319 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3320 }
3321
3322 ioa_cfg->errors_logged = 0;
3323 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3324
3325 if (ioa_cfg->in_reset_reload) {
3326 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3327 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3328
3329 /* Wait for a second for any errors to be logged */
3330 msleep(1000);
3331 } else {
3332 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3333 return -EIO;
3334 }
3335
3336 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3337 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3338 rc = -EIO;
3339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3340
3341 return rc;
3342 }
3343
3344 static struct device_attribute ipr_diagnostics_attr = {
3345 .attr = {
3346 .name = "run_diagnostics",
3347 .mode = S_IWUSR,
3348 },
3349 .store = ipr_store_diagnostics
3350 };
3351
3352 /**
3353 * ipr_show_adapter_state - Show the adapter's state
3354 * @class_dev: device struct
3355 * @buf: buffer
3356 *
3357 * Return value:
3358 * number of bytes printed to buffer
3359 **/
3360 static ssize_t ipr_show_adapter_state(struct device *dev,
3361 struct device_attribute *attr, char *buf)
3362 {
3363 struct Scsi_Host *shost = class_to_shost(dev);
3364 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3365 unsigned long lock_flags = 0;
3366 int len;
3367
3368 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3369 if (ioa_cfg->ioa_is_dead)
3370 len = snprintf(buf, PAGE_SIZE, "offline\n");
3371 else
3372 len = snprintf(buf, PAGE_SIZE, "online\n");
3373 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3374 return len;
3375 }
3376
3377 /**
3378 * ipr_store_adapter_state - Change adapter state
3379 * @dev: device struct
3380 * @buf: buffer
3381 * @count: buffer size
3382 *
3383 * This function will change the adapter's state.
3384 *
3385 * Return value:
3386 * count on success / other on failure
3387 **/
3388 static ssize_t ipr_store_adapter_state(struct device *dev,
3389 struct device_attribute *attr,
3390 const char *buf, size_t count)
3391 {
3392 struct Scsi_Host *shost = class_to_shost(dev);
3393 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3394 unsigned long lock_flags;
3395 int result = count;
3396
3397 if (!capable(CAP_SYS_ADMIN))
3398 return -EACCES;
3399
3400 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3401 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
3402 ioa_cfg->ioa_is_dead = 0;
3403 ioa_cfg->reset_retries = 0;
3404 ioa_cfg->in_ioa_bringdown = 0;
3405 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3406 }
3407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3408 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3409
3410 return result;
3411 }
3412
3413 static struct device_attribute ipr_ioa_state_attr = {
3414 .attr = {
3415 .name = "online_state",
3416 .mode = S_IRUGO | S_IWUSR,
3417 },
3418 .show = ipr_show_adapter_state,
3419 .store = ipr_store_adapter_state
3420 };
3421
3422 /**
3423 * ipr_store_reset_adapter - Reset the adapter
3424 * @dev: device struct
3425 * @buf: buffer
3426 * @count: buffer size
3427 *
3428 * This function will reset the adapter.
3429 *
3430 * Return value:
3431 * count on success / other on failure
3432 **/
3433 static ssize_t ipr_store_reset_adapter(struct device *dev,
3434 struct device_attribute *attr,
3435 const char *buf, size_t count)
3436 {
3437 struct Scsi_Host *shost = class_to_shost(dev);
3438 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3439 unsigned long lock_flags;
3440 int result = count;
3441
3442 if (!capable(CAP_SYS_ADMIN))
3443 return -EACCES;
3444
3445 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3446 if (!ioa_cfg->in_reset_reload)
3447 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3448 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3449 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3450
3451 return result;
3452 }
3453
3454 static struct device_attribute ipr_ioa_reset_attr = {
3455 .attr = {
3456 .name = "reset_host",
3457 .mode = S_IWUSR,
3458 },
3459 .store = ipr_store_reset_adapter
3460 };
3461
3462 /**
3463 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3464 * @buf_len: buffer length
3465 *
3466 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3467 * list to use for microcode download
3468 *
3469 * Return value:
3470 * pointer to sglist / NULL on failure
3471 **/
3472 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3473 {
3474 int sg_size, order, bsize_elem, num_elem, i, j;
3475 struct ipr_sglist *sglist;
3476 struct scatterlist *scatterlist;
3477 struct page *page;
3478
3479 /* Get the minimum size per scatter/gather element */
3480 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3481
3482 /* Get the actual size per element */
3483 order = get_order(sg_size);
3484
3485 /* Determine the actual number of bytes per element */
3486 bsize_elem = PAGE_SIZE * (1 << order);
3487
3488 /* Determine the actual number of sg entries needed */
3489 if (buf_len % bsize_elem)
3490 num_elem = (buf_len / bsize_elem) + 1;
3491 else
3492 num_elem = buf_len / bsize_elem;
3493
3494 /* Allocate a scatter/gather list for the DMA */
3495 sglist = kzalloc(sizeof(struct ipr_sglist) +
3496 (sizeof(struct scatterlist) * (num_elem - 1)),
3497 GFP_KERNEL);
3498
3499 if (sglist == NULL) {
3500 ipr_trace;
3501 return NULL;
3502 }
3503
3504 scatterlist = sglist->scatterlist;
3505 sg_init_table(scatterlist, num_elem);
3506
3507 sglist->order = order;
3508 sglist->num_sg = num_elem;
3509
3510 /* Allocate a bunch of sg elements */
3511 for (i = 0; i < num_elem; i++) {
3512 page = alloc_pages(GFP_KERNEL, order);
3513 if (!page) {
3514 ipr_trace;
3515
3516 /* Free up what we already allocated */
3517 for (j = i - 1; j >= 0; j--)
3518 __free_pages(sg_page(&scatterlist[j]), order);
3519 kfree(sglist);
3520 return NULL;
3521 }
3522
3523 sg_set_page(&scatterlist[i], page, 0, 0);
3524 }
3525
3526 return sglist;
3527 }
3528
3529 /**
3530 * ipr_free_ucode_buffer - Frees a microcode download buffer
3531 * @p_dnld: scatter/gather list pointer
3532 *
3533 * Free a DMA'able ucode download buffer previously allocated with
3534 * ipr_alloc_ucode_buffer
3535 *
3536 * Return value:
3537 * nothing
3538 **/
3539 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3540 {
3541 int i;
3542
3543 for (i = 0; i < sglist->num_sg; i++)
3544 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3545
3546 kfree(sglist);
3547 }
3548
3549 /**
3550 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3551 * @sglist: scatter/gather list pointer
3552 * @buffer: buffer pointer
3553 * @len: buffer length
3554 *
3555 * Copy a microcode image from a user buffer into a buffer allocated by
3556 * ipr_alloc_ucode_buffer
3557 *
3558 * Return value:
3559 * 0 on success / other on failure
3560 **/
3561 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3562 u8 *buffer, u32 len)
3563 {
3564 int bsize_elem, i, result = 0;
3565 struct scatterlist *scatterlist;
3566 void *kaddr;
3567
3568 /* Determine the actual number of bytes per element */
3569 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3570
3571 scatterlist = sglist->scatterlist;
3572
3573 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3574 struct page *page = sg_page(&scatterlist[i]);
3575
3576 kaddr = kmap(page);
3577 memcpy(kaddr, buffer, bsize_elem);
3578 kunmap(page);
3579
3580 scatterlist[i].length = bsize_elem;
3581
3582 if (result != 0) {
3583 ipr_trace;
3584 return result;
3585 }
3586 }
3587
3588 if (len % bsize_elem) {
3589 struct page *page = sg_page(&scatterlist[i]);
3590
3591 kaddr = kmap(page);
3592 memcpy(kaddr, buffer, len % bsize_elem);
3593 kunmap(page);
3594
3595 scatterlist[i].length = len % bsize_elem;
3596 }
3597
3598 sglist->buffer_len = len;
3599 return result;
3600 }
3601
3602 /**
3603 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3604 * @ipr_cmd: ipr command struct
3605 * @sglist: scatter/gather list
3606 *
3607 * Builds a microcode download IOA data list (IOADL).
3608 *
3609 **/
3610 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3611 struct ipr_sglist *sglist)
3612 {
3613 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3614 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3615 struct scatterlist *scatterlist = sglist->scatterlist;
3616 int i;
3617
3618 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3619 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3620 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3621
3622 ioarcb->ioadl_len =
3623 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3624 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3625 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3626 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3627 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3628 }
3629
3630 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3631 }
3632
3633 /**
3634 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3635 * @ipr_cmd: ipr command struct
3636 * @sglist: scatter/gather list
3637 *
3638 * Builds a microcode download IOA data list (IOADL).
3639 *
3640 **/
3641 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3642 struct ipr_sglist *sglist)
3643 {
3644 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3645 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3646 struct scatterlist *scatterlist = sglist->scatterlist;
3647 int i;
3648
3649 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3650 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3651 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3652
3653 ioarcb->ioadl_len =
3654 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3655
3656 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3657 ioadl[i].flags_and_data_len =
3658 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3659 ioadl[i].address =
3660 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3661 }
3662
3663 ioadl[i-1].flags_and_data_len |=
3664 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3665 }
3666
3667 /**
3668 * ipr_update_ioa_ucode - Update IOA's microcode
3669 * @ioa_cfg: ioa config struct
3670 * @sglist: scatter/gather list
3671 *
3672 * Initiate an adapter reset to update the IOA's microcode
3673 *
3674 * Return value:
3675 * 0 on success / -EIO on failure
3676 **/
3677 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3678 struct ipr_sglist *sglist)
3679 {
3680 unsigned long lock_flags;
3681
3682 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3683 while(ioa_cfg->in_reset_reload) {
3684 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3685 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3686 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3687 }
3688
3689 if (ioa_cfg->ucode_sglist) {
3690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3691 dev_err(&ioa_cfg->pdev->dev,
3692 "Microcode download already in progress\n");
3693 return -EIO;
3694 }
3695
3696 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3697 sglist->num_sg, DMA_TO_DEVICE);
3698
3699 if (!sglist->num_dma_sg) {
3700 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3701 dev_err(&ioa_cfg->pdev->dev,
3702 "Failed to map microcode download buffer!\n");
3703 return -EIO;
3704 }
3705
3706 ioa_cfg->ucode_sglist = sglist;
3707 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3709 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3710
3711 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3712 ioa_cfg->ucode_sglist = NULL;
3713 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3714 return 0;
3715 }
3716
3717 /**
3718 * ipr_store_update_fw - Update the firmware on the adapter
3719 * @class_dev: device struct
3720 * @buf: buffer
3721 * @count: buffer size
3722 *
3723 * This function will update the firmware on the adapter.
3724 *
3725 * Return value:
3726 * count on success / other on failure
3727 **/
3728 static ssize_t ipr_store_update_fw(struct device *dev,
3729 struct device_attribute *attr,
3730 const char *buf, size_t count)
3731 {
3732 struct Scsi_Host *shost = class_to_shost(dev);
3733 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3734 struct ipr_ucode_image_header *image_hdr;
3735 const struct firmware *fw_entry;
3736 struct ipr_sglist *sglist;
3737 char fname[100];
3738 char *src;
3739 int len, result, dnld_size;
3740
3741 if (!capable(CAP_SYS_ADMIN))
3742 return -EACCES;
3743
3744 len = snprintf(fname, 99, "%s", buf);
3745 fname[len-1] = '\0';
3746
3747 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3748 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3749 return -EIO;
3750 }
3751
3752 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3753
3754 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3755 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3756 sglist = ipr_alloc_ucode_buffer(dnld_size);
3757
3758 if (!sglist) {
3759 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3760 release_firmware(fw_entry);
3761 return -ENOMEM;
3762 }
3763
3764 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3765
3766 if (result) {
3767 dev_err(&ioa_cfg->pdev->dev,
3768 "Microcode buffer copy to DMA buffer failed\n");
3769 goto out;
3770 }
3771
3772 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
3773
3774 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3775
3776 if (!result)
3777 result = count;
3778 out:
3779 ipr_free_ucode_buffer(sglist);
3780 release_firmware(fw_entry);
3781 return result;
3782 }
3783
3784 static struct device_attribute ipr_update_fw_attr = {
3785 .attr = {
3786 .name = "update_fw",
3787 .mode = S_IWUSR,
3788 },
3789 .store = ipr_store_update_fw
3790 };
3791
3792 /**
3793 * ipr_show_fw_type - Show the adapter's firmware type.
3794 * @dev: class device struct
3795 * @buf: buffer
3796 *
3797 * Return value:
3798 * number of bytes printed to buffer
3799 **/
3800 static ssize_t ipr_show_fw_type(struct device *dev,
3801 struct device_attribute *attr, char *buf)
3802 {
3803 struct Scsi_Host *shost = class_to_shost(dev);
3804 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3805 unsigned long lock_flags = 0;
3806 int len;
3807
3808 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3809 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
3810 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3811 return len;
3812 }
3813
3814 static struct device_attribute ipr_ioa_fw_type_attr = {
3815 .attr = {
3816 .name = "fw_type",
3817 .mode = S_IRUGO,
3818 },
3819 .show = ipr_show_fw_type
3820 };
3821
3822 static struct device_attribute *ipr_ioa_attrs[] = {
3823 &ipr_fw_version_attr,
3824 &ipr_log_level_attr,
3825 &ipr_diagnostics_attr,
3826 &ipr_ioa_state_attr,
3827 &ipr_ioa_reset_attr,
3828 &ipr_update_fw_attr,
3829 &ipr_ioa_fw_type_attr,
3830 NULL,
3831 };
3832
3833 #ifdef CONFIG_SCSI_IPR_DUMP
3834 /**
3835 * ipr_read_dump - Dump the adapter
3836 * @filp: open sysfs file
3837 * @kobj: kobject struct
3838 * @bin_attr: bin_attribute struct
3839 * @buf: buffer
3840 * @off: offset
3841 * @count: buffer size
3842 *
3843 * Return value:
3844 * number of bytes printed to buffer
3845 **/
3846 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
3847 struct bin_attribute *bin_attr,
3848 char *buf, loff_t off, size_t count)
3849 {
3850 struct device *cdev = container_of(kobj, struct device, kobj);
3851 struct Scsi_Host *shost = class_to_shost(cdev);
3852 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3853 struct ipr_dump *dump;
3854 unsigned long lock_flags = 0;
3855 char *src;
3856 int len, sdt_end;
3857 size_t rc = count;
3858
3859 if (!capable(CAP_SYS_ADMIN))
3860 return -EACCES;
3861
3862 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3863 dump = ioa_cfg->dump;
3864
3865 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3866 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3867 return 0;
3868 }
3869 kref_get(&dump->kref);
3870 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3871
3872 if (off > dump->driver_dump.hdr.len) {
3873 kref_put(&dump->kref, ipr_release_dump);
3874 return 0;
3875 }
3876
3877 if (off + count > dump->driver_dump.hdr.len) {
3878 count = dump->driver_dump.hdr.len - off;
3879 rc = count;
3880 }
3881
3882 if (count && off < sizeof(dump->driver_dump)) {
3883 if (off + count > sizeof(dump->driver_dump))
3884 len = sizeof(dump->driver_dump) - off;
3885 else
3886 len = count;
3887 src = (u8 *)&dump->driver_dump + off;
3888 memcpy(buf, src, len);
3889 buf += len;
3890 off += len;
3891 count -= len;
3892 }
3893
3894 off -= sizeof(dump->driver_dump);
3895
3896 if (ioa_cfg->sis64)
3897 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
3898 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
3899 sizeof(struct ipr_sdt_entry));
3900 else
3901 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
3902 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
3903
3904 if (count && off < sdt_end) {
3905 if (off + count > sdt_end)
3906 len = sdt_end - off;
3907 else
3908 len = count;
3909 src = (u8 *)&dump->ioa_dump + off;
3910 memcpy(buf, src, len);
3911 buf += len;
3912 off += len;
3913 count -= len;
3914 }
3915
3916 off -= sdt_end;
3917
3918 while (count) {
3919 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3920 len = PAGE_ALIGN(off) - off;
3921 else
3922 len = count;
3923 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3924 src += off & ~PAGE_MASK;
3925 memcpy(buf, src, len);
3926 buf += len;
3927 off += len;
3928 count -= len;
3929 }
3930
3931 kref_put(&dump->kref, ipr_release_dump);
3932 return rc;
3933 }
3934
3935 /**
3936 * ipr_alloc_dump - Prepare for adapter dump
3937 * @ioa_cfg: ioa config struct
3938 *
3939 * Return value:
3940 * 0 on success / other on failure
3941 **/
3942 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3943 {
3944 struct ipr_dump *dump;
3945 __be32 **ioa_data;
3946 unsigned long lock_flags = 0;
3947
3948 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3949
3950 if (!dump) {
3951 ipr_err("Dump memory allocation failed\n");
3952 return -ENOMEM;
3953 }
3954
3955 if (ioa_cfg->sis64)
3956 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
3957 else
3958 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
3959
3960 if (!ioa_data) {
3961 ipr_err("Dump memory allocation failed\n");
3962 kfree(dump);
3963 return -ENOMEM;
3964 }
3965
3966 dump->ioa_dump.ioa_data = ioa_data;
3967
3968 kref_init(&dump->kref);
3969 dump->ioa_cfg = ioa_cfg;
3970
3971 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3972
3973 if (INACTIVE != ioa_cfg->sdt_state) {
3974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3975 vfree(dump->ioa_dump.ioa_data);
3976 kfree(dump);
3977 return 0;
3978 }
3979
3980 ioa_cfg->dump = dump;
3981 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3982 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3983 ioa_cfg->dump_taken = 1;
3984 schedule_work(&ioa_cfg->work_q);
3985 }
3986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3987
3988 return 0;
3989 }
3990
3991 /**
3992 * ipr_free_dump - Free adapter dump memory
3993 * @ioa_cfg: ioa config struct
3994 *
3995 * Return value:
3996 * 0 on success / other on failure
3997 **/
3998 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3999 {
4000 struct ipr_dump *dump;
4001 unsigned long lock_flags = 0;
4002
4003 ENTER;
4004
4005 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4006 dump = ioa_cfg->dump;
4007 if (!dump) {
4008 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4009 return 0;
4010 }
4011
4012 ioa_cfg->dump = NULL;
4013 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4014
4015 kref_put(&dump->kref, ipr_release_dump);
4016
4017 LEAVE;
4018 return 0;
4019 }
4020
4021 /**
4022 * ipr_write_dump - Setup dump state of adapter
4023 * @filp: open sysfs file
4024 * @kobj: kobject struct
4025 * @bin_attr: bin_attribute struct
4026 * @buf: buffer
4027 * @off: offset
4028 * @count: buffer size
4029 *
4030 * Return value:
4031 * number of bytes printed to buffer
4032 **/
4033 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4034 struct bin_attribute *bin_attr,
4035 char *buf, loff_t off, size_t count)
4036 {
4037 struct device *cdev = container_of(kobj, struct device, kobj);
4038 struct Scsi_Host *shost = class_to_shost(cdev);
4039 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4040 int rc;
4041
4042 if (!capable(CAP_SYS_ADMIN))
4043 return -EACCES;
4044
4045 if (buf[0] == '1')
4046 rc = ipr_alloc_dump(ioa_cfg);
4047 else if (buf[0] == '0')
4048 rc = ipr_free_dump(ioa_cfg);
4049 else
4050 return -EINVAL;
4051
4052 if (rc)
4053 return rc;
4054 else
4055 return count;
4056 }
4057
4058 static struct bin_attribute ipr_dump_attr = {
4059 .attr = {
4060 .name = "dump",
4061 .mode = S_IRUSR | S_IWUSR,
4062 },
4063 .size = 0,
4064 .read = ipr_read_dump,
4065 .write = ipr_write_dump
4066 };
4067 #else
4068 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4069 #endif
4070
4071 /**
4072 * ipr_change_queue_depth - Change the device's queue depth
4073 * @sdev: scsi device struct
4074 * @qdepth: depth to set
4075 * @reason: calling context
4076 *
4077 * Return value:
4078 * actual depth set
4079 **/
4080 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4081 int reason)
4082 {
4083 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4084 struct ipr_resource_entry *res;
4085 unsigned long lock_flags = 0;
4086
4087 if (reason != SCSI_QDEPTH_DEFAULT)
4088 return -EOPNOTSUPP;
4089
4090 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4091 res = (struct ipr_resource_entry *)sdev->hostdata;
4092
4093 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4094 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4095 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4096
4097 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4098 return sdev->queue_depth;
4099 }
4100
4101 /**
4102 * ipr_change_queue_type - Change the device's queue type
4103 * @dsev: scsi device struct
4104 * @tag_type: type of tags to use
4105 *
4106 * Return value:
4107 * actual queue type set
4108 **/
4109 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4110 {
4111 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4112 struct ipr_resource_entry *res;
4113 unsigned long lock_flags = 0;
4114
4115 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4116 res = (struct ipr_resource_entry *)sdev->hostdata;
4117
4118 if (res) {
4119 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4120 /*
4121 * We don't bother quiescing the device here since the
4122 * adapter firmware does it for us.
4123 */
4124 scsi_set_tag_type(sdev, tag_type);
4125
4126 if (tag_type)
4127 scsi_activate_tcq(sdev, sdev->queue_depth);
4128 else
4129 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4130 } else
4131 tag_type = 0;
4132 } else
4133 tag_type = 0;
4134
4135 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4136 return tag_type;
4137 }
4138
4139 /**
4140 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4141 * @dev: device struct
4142 * @attr: device attribute structure
4143 * @buf: buffer
4144 *
4145 * Return value:
4146 * number of bytes printed to buffer
4147 **/
4148 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4149 {
4150 struct scsi_device *sdev = to_scsi_device(dev);
4151 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4152 struct ipr_resource_entry *res;
4153 unsigned long lock_flags = 0;
4154 ssize_t len = -ENXIO;
4155
4156 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4157 res = (struct ipr_resource_entry *)sdev->hostdata;
4158 if (res)
4159 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4160 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4161 return len;
4162 }
4163
4164 static struct device_attribute ipr_adapter_handle_attr = {
4165 .attr = {
4166 .name = "adapter_handle",
4167 .mode = S_IRUSR,
4168 },
4169 .show = ipr_show_adapter_handle
4170 };
4171
4172 /**
4173 * ipr_show_resource_path - Show the resource path or the resource address for
4174 * this device.
4175 * @dev: device struct
4176 * @attr: device attribute structure
4177 * @buf: buffer
4178 *
4179 * Return value:
4180 * number of bytes printed to buffer
4181 **/
4182 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4183 {
4184 struct scsi_device *sdev = to_scsi_device(dev);
4185 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4186 struct ipr_resource_entry *res;
4187 unsigned long lock_flags = 0;
4188 ssize_t len = -ENXIO;
4189 char buffer[IPR_MAX_RES_PATH_LENGTH];
4190
4191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4192 res = (struct ipr_resource_entry *)sdev->hostdata;
4193 if (res && ioa_cfg->sis64)
4194 len = snprintf(buf, PAGE_SIZE, "%s\n",
4195 ipr_format_res_path(res->res_path, buffer,
4196 sizeof(buffer)));
4197 else if (res)
4198 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4199 res->bus, res->target, res->lun);
4200
4201 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4202 return len;
4203 }
4204
4205 static struct device_attribute ipr_resource_path_attr = {
4206 .attr = {
4207 .name = "resource_path",
4208 .mode = S_IRUGO,
4209 },
4210 .show = ipr_show_resource_path
4211 };
4212
4213 /**
4214 * ipr_show_device_id - Show the device_id for this device.
4215 * @dev: device struct
4216 * @attr: device attribute structure
4217 * @buf: buffer
4218 *
4219 * Return value:
4220 * number of bytes printed to buffer
4221 **/
4222 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4223 {
4224 struct scsi_device *sdev = to_scsi_device(dev);
4225 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4226 struct ipr_resource_entry *res;
4227 unsigned long lock_flags = 0;
4228 ssize_t len = -ENXIO;
4229
4230 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4231 res = (struct ipr_resource_entry *)sdev->hostdata;
4232 if (res && ioa_cfg->sis64)
4233 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id);
4234 else if (res)
4235 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4236
4237 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4238 return len;
4239 }
4240
4241 static struct device_attribute ipr_device_id_attr = {
4242 .attr = {
4243 .name = "device_id",
4244 .mode = S_IRUGO,
4245 },
4246 .show = ipr_show_device_id
4247 };
4248
4249 /**
4250 * ipr_show_resource_type - Show the resource type for this device.
4251 * @dev: device struct
4252 * @attr: device attribute structure
4253 * @buf: buffer
4254 *
4255 * Return value:
4256 * number of bytes printed to buffer
4257 **/
4258 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4259 {
4260 struct scsi_device *sdev = to_scsi_device(dev);
4261 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4262 struct ipr_resource_entry *res;
4263 unsigned long lock_flags = 0;
4264 ssize_t len = -ENXIO;
4265
4266 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4267 res = (struct ipr_resource_entry *)sdev->hostdata;
4268
4269 if (res)
4270 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4271
4272 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4273 return len;
4274 }
4275
4276 static struct device_attribute ipr_resource_type_attr = {
4277 .attr = {
4278 .name = "resource_type",
4279 .mode = S_IRUGO,
4280 },
4281 .show = ipr_show_resource_type
4282 };
4283
4284 static struct device_attribute *ipr_dev_attrs[] = {
4285 &ipr_adapter_handle_attr,
4286 &ipr_resource_path_attr,
4287 &ipr_device_id_attr,
4288 &ipr_resource_type_attr,
4289 NULL,
4290 };
4291
4292 /**
4293 * ipr_biosparam - Return the HSC mapping
4294 * @sdev: scsi device struct
4295 * @block_device: block device pointer
4296 * @capacity: capacity of the device
4297 * @parm: Array containing returned HSC values.
4298 *
4299 * This function generates the HSC parms that fdisk uses.
4300 * We want to make sure we return something that places partitions
4301 * on 4k boundaries for best performance with the IOA.
4302 *
4303 * Return value:
4304 * 0 on success
4305 **/
4306 static int ipr_biosparam(struct scsi_device *sdev,
4307 struct block_device *block_device,
4308 sector_t capacity, int *parm)
4309 {
4310 int heads, sectors;
4311 sector_t cylinders;
4312
4313 heads = 128;
4314 sectors = 32;
4315
4316 cylinders = capacity;
4317 sector_div(cylinders, (128 * 32));
4318
4319 /* return result */
4320 parm[0] = heads;
4321 parm[1] = sectors;
4322 parm[2] = cylinders;
4323
4324 return 0;
4325 }
4326
4327 /**
4328 * ipr_find_starget - Find target based on bus/target.
4329 * @starget: scsi target struct
4330 *
4331 * Return value:
4332 * resource entry pointer if found / NULL if not found
4333 **/
4334 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4335 {
4336 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4337 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4338 struct ipr_resource_entry *res;
4339
4340 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4341 if ((res->bus == starget->channel) &&
4342 (res->target == starget->id) &&
4343 (res->lun == 0)) {
4344 return res;
4345 }
4346 }
4347
4348 return NULL;
4349 }
4350
4351 static struct ata_port_info sata_port_info;
4352
4353 /**
4354 * ipr_target_alloc - Prepare for commands to a SCSI target
4355 * @starget: scsi target struct
4356 *
4357 * If the device is a SATA device, this function allocates an
4358 * ATA port with libata, else it does nothing.
4359 *
4360 * Return value:
4361 * 0 on success / non-0 on failure
4362 **/
4363 static int ipr_target_alloc(struct scsi_target *starget)
4364 {
4365 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4366 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4367 struct ipr_sata_port *sata_port;
4368 struct ata_port *ap;
4369 struct ipr_resource_entry *res;
4370 unsigned long lock_flags;
4371
4372 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4373 res = ipr_find_starget(starget);
4374 starget->hostdata = NULL;
4375
4376 if (res && ipr_is_gata(res)) {
4377 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4378 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4379 if (!sata_port)
4380 return -ENOMEM;
4381
4382 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4383 if (ap) {
4384 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4385 sata_port->ioa_cfg = ioa_cfg;
4386 sata_port->ap = ap;
4387 sata_port->res = res;
4388
4389 res->sata_port = sata_port;
4390 ap->private_data = sata_port;
4391 starget->hostdata = sata_port;
4392 } else {
4393 kfree(sata_port);
4394 return -ENOMEM;
4395 }
4396 }
4397 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4398
4399 return 0;
4400 }
4401
4402 /**
4403 * ipr_target_destroy - Destroy a SCSI target
4404 * @starget: scsi target struct
4405 *
4406 * If the device was a SATA device, this function frees the libata
4407 * ATA port, else it does nothing.
4408 *
4409 **/
4410 static void ipr_target_destroy(struct scsi_target *starget)
4411 {
4412 struct ipr_sata_port *sata_port = starget->hostdata;
4413 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4414 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4415
4416 if (ioa_cfg->sis64) {
4417 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4418 clear_bit(starget->id, ioa_cfg->array_ids);
4419 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4420 clear_bit(starget->id, ioa_cfg->vset_ids);
4421 else if (starget->channel == 0)
4422 clear_bit(starget->id, ioa_cfg->target_ids);
4423 }
4424
4425 if (sata_port) {
4426 starget->hostdata = NULL;
4427 ata_sas_port_destroy(sata_port->ap);
4428 kfree(sata_port);
4429 }
4430 }
4431
4432 /**
4433 * ipr_find_sdev - Find device based on bus/target/lun.
4434 * @sdev: scsi device struct
4435 *
4436 * Return value:
4437 * resource entry pointer if found / NULL if not found
4438 **/
4439 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4440 {
4441 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4442 struct ipr_resource_entry *res;
4443
4444 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4445 if ((res->bus == sdev->channel) &&
4446 (res->target == sdev->id) &&
4447 (res->lun == sdev->lun))
4448 return res;
4449 }
4450
4451 return NULL;
4452 }
4453
4454 /**
4455 * ipr_slave_destroy - Unconfigure a SCSI device
4456 * @sdev: scsi device struct
4457 *
4458 * Return value:
4459 * nothing
4460 **/
4461 static void ipr_slave_destroy(struct scsi_device *sdev)
4462 {
4463 struct ipr_resource_entry *res;
4464 struct ipr_ioa_cfg *ioa_cfg;
4465 unsigned long lock_flags = 0;
4466
4467 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4468
4469 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4470 res = (struct ipr_resource_entry *) sdev->hostdata;
4471 if (res) {
4472 if (res->sata_port)
4473 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4474 sdev->hostdata = NULL;
4475 res->sdev = NULL;
4476 res->sata_port = NULL;
4477 }
4478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4479 }
4480
4481 /**
4482 * ipr_slave_configure - Configure a SCSI device
4483 * @sdev: scsi device struct
4484 *
4485 * This function configures the specified scsi device.
4486 *
4487 * Return value:
4488 * 0 on success
4489 **/
4490 static int ipr_slave_configure(struct scsi_device *sdev)
4491 {
4492 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4493 struct ipr_resource_entry *res;
4494 struct ata_port *ap = NULL;
4495 unsigned long lock_flags = 0;
4496 char buffer[IPR_MAX_RES_PATH_LENGTH];
4497
4498 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4499 res = sdev->hostdata;
4500 if (res) {
4501 if (ipr_is_af_dasd_device(res))
4502 sdev->type = TYPE_RAID;
4503 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4504 sdev->scsi_level = 4;
4505 sdev->no_uld_attach = 1;
4506 }
4507 if (ipr_is_vset_device(res)) {
4508 blk_queue_rq_timeout(sdev->request_queue,
4509 IPR_VSET_RW_TIMEOUT);
4510 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4511 }
4512 if (ipr_is_gata(res) && res->sata_port)
4513 ap = res->sata_port->ap;
4514 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4515
4516 if (ap) {
4517 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
4518 ata_sas_slave_configure(sdev, ap);
4519 } else
4520 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4521 if (ioa_cfg->sis64)
4522 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4523 ipr_format_res_path(res->res_path, buffer,
4524 sizeof(buffer)));
4525 return 0;
4526 }
4527 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4528 return 0;
4529 }
4530
4531 /**
4532 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4533 * @sdev: scsi device struct
4534 *
4535 * This function initializes an ATA port so that future commands
4536 * sent through queuecommand will work.
4537 *
4538 * Return value:
4539 * 0 on success
4540 **/
4541 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4542 {
4543 struct ipr_sata_port *sata_port = NULL;
4544 int rc = -ENXIO;
4545
4546 ENTER;
4547 if (sdev->sdev_target)
4548 sata_port = sdev->sdev_target->hostdata;
4549 if (sata_port)
4550 rc = ata_sas_port_init(sata_port->ap);
4551 if (rc)
4552 ipr_slave_destroy(sdev);
4553
4554 LEAVE;
4555 return rc;
4556 }
4557
4558 /**
4559 * ipr_slave_alloc - Prepare for commands to a device.
4560 * @sdev: scsi device struct
4561 *
4562 * This function saves a pointer to the resource entry
4563 * in the scsi device struct if the device exists. We
4564 * can then use this pointer in ipr_queuecommand when
4565 * handling new commands.
4566 *
4567 * Return value:
4568 * 0 on success / -ENXIO if device does not exist
4569 **/
4570 static int ipr_slave_alloc(struct scsi_device *sdev)
4571 {
4572 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4573 struct ipr_resource_entry *res;
4574 unsigned long lock_flags;
4575 int rc = -ENXIO;
4576
4577 sdev->hostdata = NULL;
4578
4579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4580
4581 res = ipr_find_sdev(sdev);
4582 if (res) {
4583 res->sdev = sdev;
4584 res->add_to_ml = 0;
4585 res->in_erp = 0;
4586 sdev->hostdata = res;
4587 if (!ipr_is_naca_model(res))
4588 res->needs_sync_complete = 1;
4589 rc = 0;
4590 if (ipr_is_gata(res)) {
4591 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4592 return ipr_ata_slave_alloc(sdev);
4593 }
4594 }
4595
4596 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4597
4598 return rc;
4599 }
4600
4601 /**
4602 * ipr_eh_host_reset - Reset the host adapter
4603 * @scsi_cmd: scsi command struct
4604 *
4605 * Return value:
4606 * SUCCESS / FAILED
4607 **/
4608 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
4609 {
4610 struct ipr_ioa_cfg *ioa_cfg;
4611 int rc;
4612
4613 ENTER;
4614 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4615
4616 if (!ioa_cfg->in_reset_reload) {
4617 dev_err(&ioa_cfg->pdev->dev,
4618 "Adapter being reset as a result of error recovery.\n");
4619
4620 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4621 ioa_cfg->sdt_state = GET_DUMP;
4622 }
4623
4624 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4625
4626 LEAVE;
4627 return rc;
4628 }
4629
4630 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
4631 {
4632 int rc;
4633
4634 spin_lock_irq(cmd->device->host->host_lock);
4635 rc = __ipr_eh_host_reset(cmd);
4636 spin_unlock_irq(cmd->device->host->host_lock);
4637
4638 return rc;
4639 }
4640
4641 /**
4642 * ipr_device_reset - Reset the device
4643 * @ioa_cfg: ioa config struct
4644 * @res: resource entry struct
4645 *
4646 * This function issues a device reset to the affected device.
4647 * If the device is a SCSI device, a LUN reset will be sent
4648 * to the device first. If that does not work, a target reset
4649 * will be sent. If the device is a SATA device, a PHY reset will
4650 * be sent.
4651 *
4652 * Return value:
4653 * 0 on success / non-zero on failure
4654 **/
4655 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4656 struct ipr_resource_entry *res)
4657 {
4658 struct ipr_cmnd *ipr_cmd;
4659 struct ipr_ioarcb *ioarcb;
4660 struct ipr_cmd_pkt *cmd_pkt;
4661 struct ipr_ioarcb_ata_regs *regs;
4662 u32 ioasc;
4663
4664 ENTER;
4665 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4666 ioarcb = &ipr_cmd->ioarcb;
4667 cmd_pkt = &ioarcb->cmd_pkt;
4668
4669 if (ipr_cmd->ioa_cfg->sis64) {
4670 regs = &ipr_cmd->i.ata_ioadl.regs;
4671 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4672 } else
4673 regs = &ioarcb->u.add_data.u.regs;
4674
4675 ioarcb->res_handle = res->res_handle;
4676 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4677 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4678 if (ipr_is_gata(res)) {
4679 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
4680 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
4681 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4682 }
4683
4684 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4685 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4686 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4687 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4688 if (ipr_cmd->ioa_cfg->sis64)
4689 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4690 sizeof(struct ipr_ioasa_gata));
4691 else
4692 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4693 sizeof(struct ipr_ioasa_gata));
4694 }
4695
4696 LEAVE;
4697 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
4698 }
4699
4700 /**
4701 * ipr_sata_reset - Reset the SATA port
4702 * @link: SATA link to reset
4703 * @classes: class of the attached device
4704 *
4705 * This function issues a SATA phy reset to the affected ATA link.
4706 *
4707 * Return value:
4708 * 0 on success / non-zero on failure
4709 **/
4710 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
4711 unsigned long deadline)
4712 {
4713 struct ipr_sata_port *sata_port = link->ap->private_data;
4714 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4715 struct ipr_resource_entry *res;
4716 unsigned long lock_flags = 0;
4717 int rc = -ENXIO;
4718
4719 ENTER;
4720 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4721 while(ioa_cfg->in_reset_reload) {
4722 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4723 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4724 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4725 }
4726
4727 res = sata_port->res;
4728 if (res) {
4729 rc = ipr_device_reset(ioa_cfg, res);
4730 *classes = res->ata_class;
4731 }
4732
4733 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4734 LEAVE;
4735 return rc;
4736 }
4737
4738 /**
4739 * ipr_eh_dev_reset - Reset the device
4740 * @scsi_cmd: scsi command struct
4741 *
4742 * This function issues a device reset to the affected device.
4743 * A LUN reset will be sent to the device first. If that does
4744 * not work, a target reset will be sent.
4745 *
4746 * Return value:
4747 * SUCCESS / FAILED
4748 **/
4749 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
4750 {
4751 struct ipr_cmnd *ipr_cmd;
4752 struct ipr_ioa_cfg *ioa_cfg;
4753 struct ipr_resource_entry *res;
4754 struct ata_port *ap;
4755 int rc = 0;
4756
4757 ENTER;
4758 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4759 res = scsi_cmd->device->hostdata;
4760
4761 if (!res)
4762 return FAILED;
4763
4764 /*
4765 * If we are currently going through reset/reload, return failed. This will force the
4766 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4767 * reset to complete
4768 */
4769 if (ioa_cfg->in_reset_reload)
4770 return FAILED;
4771 if (ioa_cfg->ioa_is_dead)
4772 return FAILED;
4773
4774 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4775 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4776 if (ipr_cmd->scsi_cmd)
4777 ipr_cmd->done = ipr_scsi_eh_done;
4778 if (ipr_cmd->qc)
4779 ipr_cmd->done = ipr_sata_eh_done;
4780 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4781 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4782 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4783 }
4784 }
4785 }
4786
4787 res->resetting_device = 1;
4788 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
4789
4790 if (ipr_is_gata(res) && res->sata_port) {
4791 ap = res->sata_port->ap;
4792 spin_unlock_irq(scsi_cmd->device->host->host_lock);
4793 ata_std_error_handler(ap);
4794 spin_lock_irq(scsi_cmd->device->host->host_lock);
4795
4796 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4797 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4798 rc = -EIO;
4799 break;
4800 }
4801 }
4802 } else
4803 rc = ipr_device_reset(ioa_cfg, res);
4804 res->resetting_device = 0;
4805
4806 LEAVE;
4807 return (rc ? FAILED : SUCCESS);
4808 }
4809
4810 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
4811 {
4812 int rc;
4813
4814 spin_lock_irq(cmd->device->host->host_lock);
4815 rc = __ipr_eh_dev_reset(cmd);
4816 spin_unlock_irq(cmd->device->host->host_lock);
4817
4818 return rc;
4819 }
4820
4821 /**
4822 * ipr_bus_reset_done - Op done function for bus reset.
4823 * @ipr_cmd: ipr command struct
4824 *
4825 * This function is the op done function for a bus reset
4826 *
4827 * Return value:
4828 * none
4829 **/
4830 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
4831 {
4832 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4833 struct ipr_resource_entry *res;
4834
4835 ENTER;
4836 if (!ioa_cfg->sis64)
4837 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4838 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
4839 scsi_report_bus_reset(ioa_cfg->host, res->bus);
4840 break;
4841 }
4842 }
4843
4844 /*
4845 * If abort has not completed, indicate the reset has, else call the
4846 * abort's done function to wake the sleeping eh thread
4847 */
4848 if (ipr_cmd->sibling->sibling)
4849 ipr_cmd->sibling->sibling = NULL;
4850 else
4851 ipr_cmd->sibling->done(ipr_cmd->sibling);
4852
4853 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4854 LEAVE;
4855 }
4856
4857 /**
4858 * ipr_abort_timeout - An abort task has timed out
4859 * @ipr_cmd: ipr command struct
4860 *
4861 * This function handles when an abort task times out. If this
4862 * happens we issue a bus reset since we have resources tied
4863 * up that must be freed before returning to the midlayer.
4864 *
4865 * Return value:
4866 * none
4867 **/
4868 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4869 {
4870 struct ipr_cmnd *reset_cmd;
4871 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4872 struct ipr_cmd_pkt *cmd_pkt;
4873 unsigned long lock_flags = 0;
4874
4875 ENTER;
4876 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4877 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4878 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4879 return;
4880 }
4881
4882 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4883 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4884 ipr_cmd->sibling = reset_cmd;
4885 reset_cmd->sibling = ipr_cmd;
4886 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4887 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4888 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4889 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4890 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4891
4892 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4893 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4894 LEAVE;
4895 }
4896
4897 /**
4898 * ipr_cancel_op - Cancel specified op
4899 * @scsi_cmd: scsi command struct
4900 *
4901 * This function cancels specified op.
4902 *
4903 * Return value:
4904 * SUCCESS / FAILED
4905 **/
4906 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4907 {
4908 struct ipr_cmnd *ipr_cmd;
4909 struct ipr_ioa_cfg *ioa_cfg;
4910 struct ipr_resource_entry *res;
4911 struct ipr_cmd_pkt *cmd_pkt;
4912 u32 ioasc, int_reg;
4913 int op_found = 0;
4914
4915 ENTER;
4916 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4917 res = scsi_cmd->device->hostdata;
4918
4919 /* If we are currently going through reset/reload, return failed.
4920 * This will force the mid-layer to call ipr_eh_host_reset,
4921 * which will then go to sleep and wait for the reset to complete
4922 */
4923 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4924 return FAILED;
4925 if (!res)
4926 return FAILED;
4927
4928 /*
4929 * If we are aborting a timed out op, chances are that the timeout was caused
4930 * by a still not detected EEH error. In such cases, reading a register will
4931 * trigger the EEH recovery infrastructure.
4932 */
4933 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4934
4935 if (!ipr_is_gscsi(res))
4936 return FAILED;
4937
4938 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4939 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4940 ipr_cmd->done = ipr_scsi_eh_done;
4941 op_found = 1;
4942 break;
4943 }
4944 }
4945
4946 if (!op_found)
4947 return SUCCESS;
4948
4949 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4950 ipr_cmd->ioarcb.res_handle = res->res_handle;
4951 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4952 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4953 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4954 ipr_cmd->u.sdev = scsi_cmd->device;
4955
4956 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4957 scsi_cmd->cmnd[0]);
4958 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4959 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4960
4961 /*
4962 * If the abort task timed out and we sent a bus reset, we will get
4963 * one the following responses to the abort
4964 */
4965 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4966 ioasc = 0;
4967 ipr_trace;
4968 }
4969
4970 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4971 if (!ipr_is_naca_model(res))
4972 res->needs_sync_complete = 1;
4973
4974 LEAVE;
4975 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4976 }
4977
4978 /**
4979 * ipr_eh_abort - Abort a single op
4980 * @scsi_cmd: scsi command struct
4981 *
4982 * Return value:
4983 * SUCCESS / FAILED
4984 **/
4985 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4986 {
4987 unsigned long flags;
4988 int rc;
4989
4990 ENTER;
4991
4992 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4993 rc = ipr_cancel_op(scsi_cmd);
4994 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4995
4996 LEAVE;
4997 return rc;
4998 }
4999
5000 /**
5001 * ipr_handle_other_interrupt - Handle "other" interrupts
5002 * @ioa_cfg: ioa config struct
5003 * @int_reg: interrupt register
5004 *
5005 * Return value:
5006 * IRQ_NONE / IRQ_HANDLED
5007 **/
5008 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5009 u32 int_reg)
5010 {
5011 irqreturn_t rc = IRQ_HANDLED;
5012 u32 int_mask_reg;
5013
5014 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5015 int_reg &= ~int_mask_reg;
5016
5017 /* If an interrupt on the adapter did not occur, ignore it.
5018 * Or in the case of SIS 64, check for a stage change interrupt.
5019 */
5020 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5021 if (ioa_cfg->sis64) {
5022 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5023 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5024 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5025
5026 /* clear stage change */
5027 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5028 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5029 list_del(&ioa_cfg->reset_cmd->queue);
5030 del_timer(&ioa_cfg->reset_cmd->timer);
5031 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5032 return IRQ_HANDLED;
5033 }
5034 }
5035
5036 return IRQ_NONE;
5037 }
5038
5039 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5040 /* Mask the interrupt */
5041 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5042
5043 /* Clear the interrupt */
5044 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
5045 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5046
5047 list_del(&ioa_cfg->reset_cmd->queue);
5048 del_timer(&ioa_cfg->reset_cmd->timer);
5049 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5050 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5051 if (ipr_debug && printk_ratelimit())
5052 dev_err(&ioa_cfg->pdev->dev,
5053 "Spurious interrupt detected. 0x%08X\n", int_reg);
5054 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5055 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5056 return IRQ_NONE;
5057 } else {
5058 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5059 ioa_cfg->ioa_unit_checked = 1;
5060 else
5061 dev_err(&ioa_cfg->pdev->dev,
5062 "Permanent IOA failure. 0x%08X\n", int_reg);
5063
5064 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5065 ioa_cfg->sdt_state = GET_DUMP;
5066
5067 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5068 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5069 }
5070
5071 return rc;
5072 }
5073
5074 /**
5075 * ipr_isr_eh - Interrupt service routine error handler
5076 * @ioa_cfg: ioa config struct
5077 * @msg: message to log
5078 *
5079 * Return value:
5080 * none
5081 **/
5082 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
5083 {
5084 ioa_cfg->errors_logged++;
5085 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
5086
5087 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5088 ioa_cfg->sdt_state = GET_DUMP;
5089
5090 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5091 }
5092
5093 /**
5094 * ipr_isr - Interrupt service routine
5095 * @irq: irq number
5096 * @devp: pointer to ioa config struct
5097 *
5098 * Return value:
5099 * IRQ_NONE / IRQ_HANDLED
5100 **/
5101 static irqreturn_t ipr_isr(int irq, void *devp)
5102 {
5103 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
5104 unsigned long lock_flags = 0;
5105 u32 int_reg = 0;
5106 u32 ioasc;
5107 u16 cmd_index;
5108 int num_hrrq = 0;
5109 int irq_none = 0;
5110 struct ipr_cmnd *ipr_cmd;
5111 irqreturn_t rc = IRQ_NONE;
5112
5113 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5114
5115 /* If interrupts are disabled, ignore the interrupt */
5116 if (!ioa_cfg->allow_interrupts) {
5117 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5118 return IRQ_NONE;
5119 }
5120
5121 while (1) {
5122 ipr_cmd = NULL;
5123
5124 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5125 ioa_cfg->toggle_bit) {
5126
5127 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
5128 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5129
5130 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
5131 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
5132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5133 return IRQ_HANDLED;
5134 }
5135
5136 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5137
5138 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5139
5140 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5141
5142 list_del(&ipr_cmd->queue);
5143 del_timer(&ipr_cmd->timer);
5144 ipr_cmd->done(ipr_cmd);
5145
5146 rc = IRQ_HANDLED;
5147
5148 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
5149 ioa_cfg->hrrq_curr++;
5150 } else {
5151 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5152 ioa_cfg->toggle_bit ^= 1u;
5153 }
5154 }
5155
5156 if (ipr_cmd != NULL) {
5157 /* Clear the PCI interrupt */
5158 num_hrrq = 0;
5159 do {
5160 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5161 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5162 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5163 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5164
5165 } else if (rc == IRQ_NONE && irq_none == 0) {
5166 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5167 irq_none++;
5168 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5169 int_reg & IPR_PCII_HRRQ_UPDATED) {
5170 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
5171 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5172 return IRQ_HANDLED;
5173 } else
5174 break;
5175 }
5176
5177 if (unlikely(rc == IRQ_NONE))
5178 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5179
5180 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5181 return rc;
5182 }
5183
5184 /**
5185 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5186 * @ioa_cfg: ioa config struct
5187 * @ipr_cmd: ipr command struct
5188 *
5189 * Return value:
5190 * 0 on success / -1 on failure
5191 **/
5192 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5193 struct ipr_cmnd *ipr_cmd)
5194 {
5195 int i, nseg;
5196 struct scatterlist *sg;
5197 u32 length;
5198 u32 ioadl_flags = 0;
5199 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5200 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5201 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5202
5203 length = scsi_bufflen(scsi_cmd);
5204 if (!length)
5205 return 0;
5206
5207 nseg = scsi_dma_map(scsi_cmd);
5208 if (nseg < 0) {
5209 if (printk_ratelimit())
5210 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5211 return -1;
5212 }
5213
5214 ipr_cmd->dma_use_sg = nseg;
5215
5216 ioarcb->data_transfer_length = cpu_to_be32(length);
5217 ioarcb->ioadl_len =
5218 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5219
5220 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5221 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5222 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5223 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5224 ioadl_flags = IPR_IOADL_FLAGS_READ;
5225
5226 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5227 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5228 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5229 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5230 }
5231
5232 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5233 return 0;
5234 }
5235
5236 /**
5237 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5238 * @ioa_cfg: ioa config struct
5239 * @ipr_cmd: ipr command struct
5240 *
5241 * Return value:
5242 * 0 on success / -1 on failure
5243 **/
5244 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5245 struct ipr_cmnd *ipr_cmd)
5246 {
5247 int i, nseg;
5248 struct scatterlist *sg;
5249 u32 length;
5250 u32 ioadl_flags = 0;
5251 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5252 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5253 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5254
5255 length = scsi_bufflen(scsi_cmd);
5256 if (!length)
5257 return 0;
5258
5259 nseg = scsi_dma_map(scsi_cmd);
5260 if (nseg < 0) {
5261 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5262 return -1;
5263 }
5264
5265 ipr_cmd->dma_use_sg = nseg;
5266
5267 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5268 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5269 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5270 ioarcb->data_transfer_length = cpu_to_be32(length);
5271 ioarcb->ioadl_len =
5272 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5273 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5274 ioadl_flags = IPR_IOADL_FLAGS_READ;
5275 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5276 ioarcb->read_ioadl_len =
5277 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5278 }
5279
5280 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5281 ioadl = ioarcb->u.add_data.u.ioadl;
5282 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5283 offsetof(struct ipr_ioarcb, u.add_data));
5284 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5285 }
5286
5287 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5288 ioadl[i].flags_and_data_len =
5289 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5290 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5291 }
5292
5293 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5294 return 0;
5295 }
5296
5297 /**
5298 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5299 * @scsi_cmd: scsi command struct
5300 *
5301 * Return value:
5302 * task attributes
5303 **/
5304 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5305 {
5306 u8 tag[2];
5307 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5308
5309 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5310 switch (tag[0]) {
5311 case MSG_SIMPLE_TAG:
5312 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5313 break;
5314 case MSG_HEAD_TAG:
5315 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5316 break;
5317 case MSG_ORDERED_TAG:
5318 rc = IPR_FLAGS_LO_ORDERED_TASK;
5319 break;
5320 };
5321 }
5322
5323 return rc;
5324 }
5325
5326 /**
5327 * ipr_erp_done - Process completion of ERP for a device
5328 * @ipr_cmd: ipr command struct
5329 *
5330 * This function copies the sense buffer into the scsi_cmd
5331 * struct and pushes the scsi_done function.
5332 *
5333 * Return value:
5334 * nothing
5335 **/
5336 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5337 {
5338 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5339 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5340 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5341 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5342
5343 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5344 scsi_cmd->result |= (DID_ERROR << 16);
5345 scmd_printk(KERN_ERR, scsi_cmd,
5346 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5347 } else {
5348 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5349 SCSI_SENSE_BUFFERSIZE);
5350 }
5351
5352 if (res) {
5353 if (!ipr_is_naca_model(res))
5354 res->needs_sync_complete = 1;
5355 res->in_erp = 0;
5356 }
5357 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5358 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5359 scsi_cmd->scsi_done(scsi_cmd);
5360 }
5361
5362 /**
5363 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5364 * @ipr_cmd: ipr command struct
5365 *
5366 * Return value:
5367 * none
5368 **/
5369 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5370 {
5371 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5372 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5373 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5374
5375 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5376 ioarcb->data_transfer_length = 0;
5377 ioarcb->read_data_transfer_length = 0;
5378 ioarcb->ioadl_len = 0;
5379 ioarcb->read_ioadl_len = 0;
5380 ioasa->hdr.ioasc = 0;
5381 ioasa->hdr.residual_data_len = 0;
5382
5383 if (ipr_cmd->ioa_cfg->sis64)
5384 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5385 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5386 else {
5387 ioarcb->write_ioadl_addr =
5388 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5389 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5390 }
5391 }
5392
5393 /**
5394 * ipr_erp_request_sense - Send request sense to a device
5395 * @ipr_cmd: ipr command struct
5396 *
5397 * This function sends a request sense to a device as a result
5398 * of a check condition.
5399 *
5400 * Return value:
5401 * nothing
5402 **/
5403 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5404 {
5405 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5406 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5407
5408 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5409 ipr_erp_done(ipr_cmd);
5410 return;
5411 }
5412
5413 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5414
5415 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5416 cmd_pkt->cdb[0] = REQUEST_SENSE;
5417 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5418 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5419 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5420 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5421
5422 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5423 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5424
5425 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5426 IPR_REQUEST_SENSE_TIMEOUT * 2);
5427 }
5428
5429 /**
5430 * ipr_erp_cancel_all - Send cancel all to a device
5431 * @ipr_cmd: ipr command struct
5432 *
5433 * This function sends a cancel all to a device to clear the
5434 * queue. If we are running TCQ on the device, QERR is set to 1,
5435 * which means all outstanding ops have been dropped on the floor.
5436 * Cancel all will return them to us.
5437 *
5438 * Return value:
5439 * nothing
5440 **/
5441 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5442 {
5443 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5444 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5445 struct ipr_cmd_pkt *cmd_pkt;
5446
5447 res->in_erp = 1;
5448
5449 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5450
5451 if (!scsi_get_tag_type(scsi_cmd->device)) {
5452 ipr_erp_request_sense(ipr_cmd);
5453 return;
5454 }
5455
5456 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5457 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5458 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5459
5460 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5461 IPR_CANCEL_ALL_TIMEOUT);
5462 }
5463
5464 /**
5465 * ipr_dump_ioasa - Dump contents of IOASA
5466 * @ioa_cfg: ioa config struct
5467 * @ipr_cmd: ipr command struct
5468 * @res: resource entry struct
5469 *
5470 * This function is invoked by the interrupt handler when ops
5471 * fail. It will log the IOASA if appropriate. Only called
5472 * for GPDD ops.
5473 *
5474 * Return value:
5475 * none
5476 **/
5477 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5478 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5479 {
5480 int i;
5481 u16 data_len;
5482 u32 ioasc, fd_ioasc;
5483 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5484 __be32 *ioasa_data = (__be32 *)ioasa;
5485 int error_index;
5486
5487 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5488 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5489
5490 if (0 == ioasc)
5491 return;
5492
5493 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5494 return;
5495
5496 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5497 error_index = ipr_get_error(fd_ioasc);
5498 else
5499 error_index = ipr_get_error(ioasc);
5500
5501 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5502 /* Don't log an error if the IOA already logged one */
5503 if (ioasa->hdr.ilid != 0)
5504 return;
5505
5506 if (!ipr_is_gscsi(res))
5507 return;
5508
5509 if (ipr_error_table[error_index].log_ioasa == 0)
5510 return;
5511 }
5512
5513 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5514
5515 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5516 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5517 data_len = sizeof(struct ipr_ioasa64);
5518 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
5519 data_len = sizeof(struct ipr_ioasa);
5520
5521 ipr_err("IOASA Dump:\n");
5522
5523 for (i = 0; i < data_len / 4; i += 4) {
5524 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5525 be32_to_cpu(ioasa_data[i]),
5526 be32_to_cpu(ioasa_data[i+1]),
5527 be32_to_cpu(ioasa_data[i+2]),
5528 be32_to_cpu(ioasa_data[i+3]));
5529 }
5530 }
5531
5532 /**
5533 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5534 * @ioasa: IOASA
5535 * @sense_buf: sense data buffer
5536 *
5537 * Return value:
5538 * none
5539 **/
5540 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5541 {
5542 u32 failing_lba;
5543 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5544 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5545 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5546 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
5547
5548 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5549
5550 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5551 return;
5552
5553 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5554
5555 if (ipr_is_vset_device(res) &&
5556 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5557 ioasa->u.vset.failing_lba_hi != 0) {
5558 sense_buf[0] = 0x72;
5559 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5560 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5561 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5562
5563 sense_buf[7] = 12;
5564 sense_buf[8] = 0;
5565 sense_buf[9] = 0x0A;
5566 sense_buf[10] = 0x80;
5567
5568 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5569
5570 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5571 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5572 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5573 sense_buf[15] = failing_lba & 0x000000ff;
5574
5575 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5576
5577 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5578 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5579 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5580 sense_buf[19] = failing_lba & 0x000000ff;
5581 } else {
5582 sense_buf[0] = 0x70;
5583 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5584 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5585 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5586
5587 /* Illegal request */
5588 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
5589 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
5590 sense_buf[7] = 10; /* additional length */
5591
5592 /* IOARCB was in error */
5593 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5594 sense_buf[15] = 0xC0;
5595 else /* Parameter data was invalid */
5596 sense_buf[15] = 0x80;
5597
5598 sense_buf[16] =
5599 ((IPR_FIELD_POINTER_MASK &
5600 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
5601 sense_buf[17] =
5602 (IPR_FIELD_POINTER_MASK &
5603 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
5604 } else {
5605 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5606 if (ipr_is_vset_device(res))
5607 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5608 else
5609 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5610
5611 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5612 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5613 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5614 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5615 sense_buf[6] = failing_lba & 0x000000ff;
5616 }
5617
5618 sense_buf[7] = 6; /* additional length */
5619 }
5620 }
5621 }
5622
5623 /**
5624 * ipr_get_autosense - Copy autosense data to sense buffer
5625 * @ipr_cmd: ipr command struct
5626 *
5627 * This function copies the autosense buffer to the buffer
5628 * in the scsi_cmd, if there is autosense available.
5629 *
5630 * Return value:
5631 * 1 if autosense was available / 0 if not
5632 **/
5633 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5634 {
5635 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5636 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
5637
5638 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
5639 return 0;
5640
5641 if (ipr_cmd->ioa_cfg->sis64)
5642 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
5643 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
5644 SCSI_SENSE_BUFFERSIZE));
5645 else
5646 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5647 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5648 SCSI_SENSE_BUFFERSIZE));
5649 return 1;
5650 }
5651
5652 /**
5653 * ipr_erp_start - Process an error response for a SCSI op
5654 * @ioa_cfg: ioa config struct
5655 * @ipr_cmd: ipr command struct
5656 *
5657 * This function determines whether or not to initiate ERP
5658 * on the affected device.
5659 *
5660 * Return value:
5661 * nothing
5662 **/
5663 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5664 struct ipr_cmnd *ipr_cmd)
5665 {
5666 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5667 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5668 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5669 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
5670
5671 if (!res) {
5672 ipr_scsi_eh_done(ipr_cmd);
5673 return;
5674 }
5675
5676 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
5677 ipr_gen_sense(ipr_cmd);
5678
5679 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5680
5681 switch (masked_ioasc) {
5682 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
5683 if (ipr_is_naca_model(res))
5684 scsi_cmd->result |= (DID_ABORT << 16);
5685 else
5686 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5687 break;
5688 case IPR_IOASC_IR_RESOURCE_HANDLE:
5689 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
5690 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5691 break;
5692 case IPR_IOASC_HW_SEL_TIMEOUT:
5693 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5694 if (!ipr_is_naca_model(res))
5695 res->needs_sync_complete = 1;
5696 break;
5697 case IPR_IOASC_SYNC_REQUIRED:
5698 if (!res->in_erp)
5699 res->needs_sync_complete = 1;
5700 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5701 break;
5702 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
5703 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
5704 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5705 break;
5706 case IPR_IOASC_BUS_WAS_RESET:
5707 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5708 /*
5709 * Report the bus reset and ask for a retry. The device
5710 * will give CC/UA the next command.
5711 */
5712 if (!res->resetting_device)
5713 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
5714 scsi_cmd->result |= (DID_ERROR << 16);
5715 if (!ipr_is_naca_model(res))
5716 res->needs_sync_complete = 1;
5717 break;
5718 case IPR_IOASC_HW_DEV_BUS_STATUS:
5719 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
5720 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
5721 if (!ipr_get_autosense(ipr_cmd)) {
5722 if (!ipr_is_naca_model(res)) {
5723 ipr_erp_cancel_all(ipr_cmd);
5724 return;
5725 }
5726 }
5727 }
5728 if (!ipr_is_naca_model(res))
5729 res->needs_sync_complete = 1;
5730 break;
5731 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
5732 break;
5733 default:
5734 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5735 scsi_cmd->result |= (DID_ERROR << 16);
5736 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
5737 res->needs_sync_complete = 1;
5738 break;
5739 }
5740
5741 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5742 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5743 scsi_cmd->scsi_done(scsi_cmd);
5744 }
5745
5746 /**
5747 * ipr_scsi_done - mid-layer done function
5748 * @ipr_cmd: ipr command struct
5749 *
5750 * This function is invoked by the interrupt handler for
5751 * ops generated by the SCSI mid-layer
5752 *
5753 * Return value:
5754 * none
5755 **/
5756 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
5757 {
5758 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5759 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5760 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5761
5762 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
5763
5764 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
5765 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5766 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5767 scsi_cmd->scsi_done(scsi_cmd);
5768 } else
5769 ipr_erp_start(ioa_cfg, ipr_cmd);
5770 }
5771
5772 /**
5773 * ipr_queuecommand - Queue a mid-layer request
5774 * @scsi_cmd: scsi command struct
5775 * @done: done function
5776 *
5777 * This function queues a request generated by the mid-layer.
5778 *
5779 * Return value:
5780 * 0 on success
5781 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
5782 * SCSI_MLQUEUE_HOST_BUSY if host is busy
5783 **/
5784 static int ipr_queuecommand_lck(struct scsi_cmnd *scsi_cmd,
5785 void (*done) (struct scsi_cmnd *))
5786 {
5787 struct ipr_ioa_cfg *ioa_cfg;
5788 struct ipr_resource_entry *res;
5789 struct ipr_ioarcb *ioarcb;
5790 struct ipr_cmnd *ipr_cmd;
5791 int rc = 0;
5792
5793 scsi_cmd->scsi_done = done;
5794 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5795 res = scsi_cmd->device->hostdata;
5796 scsi_cmd->result = (DID_OK << 16);
5797
5798 /*
5799 * We are currently blocking all devices due to a host reset
5800 * We have told the host to stop giving us new requests, but
5801 * ERP ops don't count. FIXME
5802 */
5803 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
5804 return SCSI_MLQUEUE_HOST_BUSY;
5805
5806 /*
5807 * FIXME - Create scsi_set_host_offline interface
5808 * and the ioa_is_dead check can be removed
5809 */
5810 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
5811 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
5812 scsi_cmd->result = (DID_NO_CONNECT << 16);
5813 scsi_cmd->scsi_done(scsi_cmd);
5814 return 0;
5815 }
5816
5817 if (ipr_is_gata(res) && res->sata_port)
5818 return ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
5819
5820 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5821 ioarcb = &ipr_cmd->ioarcb;
5822 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5823
5824 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
5825 ipr_cmd->scsi_cmd = scsi_cmd;
5826 ioarcb->res_handle = res->res_handle;
5827 ipr_cmd->done = ipr_scsi_done;
5828 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
5829
5830 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
5831 if (scsi_cmd->underflow == 0)
5832 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5833
5834 if (res->needs_sync_complete) {
5835 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
5836 res->needs_sync_complete = 0;
5837 }
5838
5839 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5840 if (ipr_is_gscsi(res))
5841 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
5842 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
5843 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
5844 }
5845
5846 if (scsi_cmd->cmnd[0] >= 0xC0 &&
5847 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
5848 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5849
5850 if (likely(rc == 0)) {
5851 if (ioa_cfg->sis64)
5852 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
5853 else
5854 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
5855 }
5856
5857 if (likely(rc == 0)) {
5858 mb();
5859 ipr_send_command(ipr_cmd);
5860 } else {
5861 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5862 return SCSI_MLQUEUE_HOST_BUSY;
5863 }
5864
5865 return 0;
5866 }
5867
5868 static DEF_SCSI_QCMD(ipr_queuecommand)
5869
5870 /**
5871 * ipr_ioctl - IOCTL handler
5872 * @sdev: scsi device struct
5873 * @cmd: IOCTL cmd
5874 * @arg: IOCTL arg
5875 *
5876 * Return value:
5877 * 0 on success / other on failure
5878 **/
5879 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5880 {
5881 struct ipr_resource_entry *res;
5882
5883 res = (struct ipr_resource_entry *)sdev->hostdata;
5884 if (res && ipr_is_gata(res)) {
5885 if (cmd == HDIO_GET_IDENTITY)
5886 return -ENOTTY;
5887 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
5888 }
5889
5890 return -EINVAL;
5891 }
5892
5893 /**
5894 * ipr_info - Get information about the card/driver
5895 * @scsi_host: scsi host struct
5896 *
5897 * Return value:
5898 * pointer to buffer with description string
5899 **/
5900 static const char * ipr_ioa_info(struct Scsi_Host *host)
5901 {
5902 static char buffer[512];
5903 struct ipr_ioa_cfg *ioa_cfg;
5904 unsigned long lock_flags = 0;
5905
5906 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
5907
5908 spin_lock_irqsave(host->host_lock, lock_flags);
5909 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
5910 spin_unlock_irqrestore(host->host_lock, lock_flags);
5911
5912 return buffer;
5913 }
5914
5915 static struct scsi_host_template driver_template = {
5916 .module = THIS_MODULE,
5917 .name = "IPR",
5918 .info = ipr_ioa_info,
5919 .ioctl = ipr_ioctl,
5920 .queuecommand = ipr_queuecommand,
5921 .eh_abort_handler = ipr_eh_abort,
5922 .eh_device_reset_handler = ipr_eh_dev_reset,
5923 .eh_host_reset_handler = ipr_eh_host_reset,
5924 .slave_alloc = ipr_slave_alloc,
5925 .slave_configure = ipr_slave_configure,
5926 .slave_destroy = ipr_slave_destroy,
5927 .target_alloc = ipr_target_alloc,
5928 .target_destroy = ipr_target_destroy,
5929 .change_queue_depth = ipr_change_queue_depth,
5930 .change_queue_type = ipr_change_queue_type,
5931 .bios_param = ipr_biosparam,
5932 .can_queue = IPR_MAX_COMMANDS,
5933 .this_id = -1,
5934 .sg_tablesize = IPR_MAX_SGLIST,
5935 .max_sectors = IPR_IOA_MAX_SECTORS,
5936 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5937 .use_clustering = ENABLE_CLUSTERING,
5938 .shost_attrs = ipr_ioa_attrs,
5939 .sdev_attrs = ipr_dev_attrs,
5940 .proc_name = IPR_NAME
5941 };
5942
5943 /**
5944 * ipr_ata_phy_reset - libata phy_reset handler
5945 * @ap: ata port to reset
5946 *
5947 **/
5948 static void ipr_ata_phy_reset(struct ata_port *ap)
5949 {
5950 unsigned long flags;
5951 struct ipr_sata_port *sata_port = ap->private_data;
5952 struct ipr_resource_entry *res = sata_port->res;
5953 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5954 int rc;
5955
5956 ENTER;
5957 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5958 while(ioa_cfg->in_reset_reload) {
5959 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5960 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5961 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5962 }
5963
5964 if (!ioa_cfg->allow_cmds)
5965 goto out_unlock;
5966
5967 rc = ipr_device_reset(ioa_cfg, res);
5968
5969 if (rc) {
5970 ap->link.device[0].class = ATA_DEV_NONE;
5971 goto out_unlock;
5972 }
5973
5974 ap->link.device[0].class = res->ata_class;
5975 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
5976 ap->link.device[0].class = ATA_DEV_NONE;
5977
5978 out_unlock:
5979 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5980 LEAVE;
5981 }
5982
5983 /**
5984 * ipr_ata_post_internal - Cleanup after an internal command
5985 * @qc: ATA queued command
5986 *
5987 * Return value:
5988 * none
5989 **/
5990 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5991 {
5992 struct ipr_sata_port *sata_port = qc->ap->private_data;
5993 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5994 struct ipr_cmnd *ipr_cmd;
5995 unsigned long flags;
5996
5997 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5998 while(ioa_cfg->in_reset_reload) {
5999 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6000 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6001 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6002 }
6003
6004 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
6005 if (ipr_cmd->qc == qc) {
6006 ipr_device_reset(ioa_cfg, sata_port->res);
6007 break;
6008 }
6009 }
6010 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6011 }
6012
6013 /**
6014 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6015 * @regs: destination
6016 * @tf: source ATA taskfile
6017 *
6018 * Return value:
6019 * none
6020 **/
6021 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6022 struct ata_taskfile *tf)
6023 {
6024 regs->feature = tf->feature;
6025 regs->nsect = tf->nsect;
6026 regs->lbal = tf->lbal;
6027 regs->lbam = tf->lbam;
6028 regs->lbah = tf->lbah;
6029 regs->device = tf->device;
6030 regs->command = tf->command;
6031 regs->hob_feature = tf->hob_feature;
6032 regs->hob_nsect = tf->hob_nsect;
6033 regs->hob_lbal = tf->hob_lbal;
6034 regs->hob_lbam = tf->hob_lbam;
6035 regs->hob_lbah = tf->hob_lbah;
6036 regs->ctl = tf->ctl;
6037 }
6038
6039 /**
6040 * ipr_sata_done - done function for SATA commands
6041 * @ipr_cmd: ipr command struct
6042 *
6043 * This function is invoked by the interrupt handler for
6044 * ops generated by the SCSI mid-layer to SATA devices
6045 *
6046 * Return value:
6047 * none
6048 **/
6049 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6050 {
6051 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6052 struct ata_queued_cmd *qc = ipr_cmd->qc;
6053 struct ipr_sata_port *sata_port = qc->ap->private_data;
6054 struct ipr_resource_entry *res = sata_port->res;
6055 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6056
6057 if (ipr_cmd->ioa_cfg->sis64)
6058 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6059 sizeof(struct ipr_ioasa_gata));
6060 else
6061 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6062 sizeof(struct ipr_ioasa_gata));
6063 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6064
6065 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6066 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6067
6068 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6069 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6070 else
6071 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6072 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6073 ata_qc_complete(qc);
6074 }
6075
6076 /**
6077 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6078 * @ipr_cmd: ipr command struct
6079 * @qc: ATA queued command
6080 *
6081 **/
6082 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6083 struct ata_queued_cmd *qc)
6084 {
6085 u32 ioadl_flags = 0;
6086 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6087 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
6088 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6089 int len = qc->nbytes;
6090 struct scatterlist *sg;
6091 unsigned int si;
6092 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6093
6094 if (len == 0)
6095 return;
6096
6097 if (qc->dma_dir == DMA_TO_DEVICE) {
6098 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6099 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6100 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6101 ioadl_flags = IPR_IOADL_FLAGS_READ;
6102
6103 ioarcb->data_transfer_length = cpu_to_be32(len);
6104 ioarcb->ioadl_len =
6105 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6106 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6107 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
6108
6109 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6110 ioadl64->flags = cpu_to_be32(ioadl_flags);
6111 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6112 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6113
6114 last_ioadl64 = ioadl64;
6115 ioadl64++;
6116 }
6117
6118 if (likely(last_ioadl64))
6119 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6120 }
6121
6122 /**
6123 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6124 * @ipr_cmd: ipr command struct
6125 * @qc: ATA queued command
6126 *
6127 **/
6128 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6129 struct ata_queued_cmd *qc)
6130 {
6131 u32 ioadl_flags = 0;
6132 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6133 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6134 struct ipr_ioadl_desc *last_ioadl = NULL;
6135 int len = qc->nbytes;
6136 struct scatterlist *sg;
6137 unsigned int si;
6138
6139 if (len == 0)
6140 return;
6141
6142 if (qc->dma_dir == DMA_TO_DEVICE) {
6143 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6144 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6145 ioarcb->data_transfer_length = cpu_to_be32(len);
6146 ioarcb->ioadl_len =
6147 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6148 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6149 ioadl_flags = IPR_IOADL_FLAGS_READ;
6150 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6151 ioarcb->read_ioadl_len =
6152 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6153 }
6154
6155 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6156 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6157 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6158
6159 last_ioadl = ioadl;
6160 ioadl++;
6161 }
6162
6163 if (likely(last_ioadl))
6164 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6165 }
6166
6167 /**
6168 * ipr_qc_issue - Issue a SATA qc to a device
6169 * @qc: queued command
6170 *
6171 * Return value:
6172 * 0 if success
6173 **/
6174 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6175 {
6176 struct ata_port *ap = qc->ap;
6177 struct ipr_sata_port *sata_port = ap->private_data;
6178 struct ipr_resource_entry *res = sata_port->res;
6179 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6180 struct ipr_cmnd *ipr_cmd;
6181 struct ipr_ioarcb *ioarcb;
6182 struct ipr_ioarcb_ata_regs *regs;
6183
6184 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
6185 return AC_ERR_SYSTEM;
6186
6187 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6188 ioarcb = &ipr_cmd->ioarcb;
6189
6190 if (ioa_cfg->sis64) {
6191 regs = &ipr_cmd->i.ata_ioadl.regs;
6192 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6193 } else
6194 regs = &ioarcb->u.add_data.u.regs;
6195
6196 memset(regs, 0, sizeof(*regs));
6197 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6198
6199 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6200 ipr_cmd->qc = qc;
6201 ipr_cmd->done = ipr_sata_done;
6202 ipr_cmd->ioarcb.res_handle = res->res_handle;
6203 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6204 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6205 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6206 ipr_cmd->dma_use_sg = qc->n_elem;
6207
6208 if (ioa_cfg->sis64)
6209 ipr_build_ata_ioadl64(ipr_cmd, qc);
6210 else
6211 ipr_build_ata_ioadl(ipr_cmd, qc);
6212
6213 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6214 ipr_copy_sata_tf(regs, &qc->tf);
6215 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6216 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6217
6218 switch (qc->tf.protocol) {
6219 case ATA_PROT_NODATA:
6220 case ATA_PROT_PIO:
6221 break;
6222
6223 case ATA_PROT_DMA:
6224 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6225 break;
6226
6227 case ATAPI_PROT_PIO:
6228 case ATAPI_PROT_NODATA:
6229 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6230 break;
6231
6232 case ATAPI_PROT_DMA:
6233 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6234 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6235 break;
6236
6237 default:
6238 WARN_ON(1);
6239 return AC_ERR_INVALID;
6240 }
6241
6242 mb();
6243
6244 ipr_send_command(ipr_cmd);
6245
6246 return 0;
6247 }
6248
6249 /**
6250 * ipr_qc_fill_rtf - Read result TF
6251 * @qc: ATA queued command
6252 *
6253 * Return value:
6254 * true
6255 **/
6256 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6257 {
6258 struct ipr_sata_port *sata_port = qc->ap->private_data;
6259 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6260 struct ata_taskfile *tf = &qc->result_tf;
6261
6262 tf->feature = g->error;
6263 tf->nsect = g->nsect;
6264 tf->lbal = g->lbal;
6265 tf->lbam = g->lbam;
6266 tf->lbah = g->lbah;
6267 tf->device = g->device;
6268 tf->command = g->status;
6269 tf->hob_nsect = g->hob_nsect;
6270 tf->hob_lbal = g->hob_lbal;
6271 tf->hob_lbam = g->hob_lbam;
6272 tf->hob_lbah = g->hob_lbah;
6273 tf->ctl = g->alt_status;
6274
6275 return true;
6276 }
6277
6278 static struct ata_port_operations ipr_sata_ops = {
6279 .phy_reset = ipr_ata_phy_reset,
6280 .hardreset = ipr_sata_reset,
6281 .post_internal_cmd = ipr_ata_post_internal,
6282 .qc_prep = ata_noop_qc_prep,
6283 .qc_issue = ipr_qc_issue,
6284 .qc_fill_rtf = ipr_qc_fill_rtf,
6285 .port_start = ata_sas_port_start,
6286 .port_stop = ata_sas_port_stop
6287 };
6288
6289 static struct ata_port_info sata_port_info = {
6290 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
6291 .pio_mask = ATA_PIO4_ONLY,
6292 .mwdma_mask = ATA_MWDMA2,
6293 .udma_mask = ATA_UDMA6,
6294 .port_ops = &ipr_sata_ops
6295 };
6296
6297 #ifdef CONFIG_PPC_PSERIES
6298 static const u16 ipr_blocked_processors[] = {
6299 PV_NORTHSTAR,
6300 PV_PULSAR,
6301 PV_POWER4,
6302 PV_ICESTAR,
6303 PV_SSTAR,
6304 PV_POWER4p,
6305 PV_630,
6306 PV_630p
6307 };
6308
6309 /**
6310 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6311 * @ioa_cfg: ioa cfg struct
6312 *
6313 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6314 * certain pSeries hardware. This function determines if the given
6315 * adapter is in one of these confgurations or not.
6316 *
6317 * Return value:
6318 * 1 if adapter is not supported / 0 if adapter is supported
6319 **/
6320 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6321 {
6322 int i;
6323
6324 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6325 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
6326 if (__is_processor(ipr_blocked_processors[i]))
6327 return 1;
6328 }
6329 }
6330 return 0;
6331 }
6332 #else
6333 #define ipr_invalid_adapter(ioa_cfg) 0
6334 #endif
6335
6336 /**
6337 * ipr_ioa_bringdown_done - IOA bring down completion.
6338 * @ipr_cmd: ipr command struct
6339 *
6340 * This function processes the completion of an adapter bring down.
6341 * It wakes any reset sleepers.
6342 *
6343 * Return value:
6344 * IPR_RC_JOB_RETURN
6345 **/
6346 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6347 {
6348 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6349
6350 ENTER;
6351 ioa_cfg->in_reset_reload = 0;
6352 ioa_cfg->reset_retries = 0;
6353 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6354 wake_up_all(&ioa_cfg->reset_wait_q);
6355
6356 spin_unlock_irq(ioa_cfg->host->host_lock);
6357 scsi_unblock_requests(ioa_cfg->host);
6358 spin_lock_irq(ioa_cfg->host->host_lock);
6359 LEAVE;
6360
6361 return IPR_RC_JOB_RETURN;
6362 }
6363
6364 /**
6365 * ipr_ioa_reset_done - IOA reset completion.
6366 * @ipr_cmd: ipr command struct
6367 *
6368 * This function processes the completion of an adapter reset.
6369 * It schedules any necessary mid-layer add/removes and
6370 * wakes any reset sleepers.
6371 *
6372 * Return value:
6373 * IPR_RC_JOB_RETURN
6374 **/
6375 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6376 {
6377 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6378 struct ipr_resource_entry *res;
6379 struct ipr_hostrcb *hostrcb, *temp;
6380 int i = 0;
6381
6382 ENTER;
6383 ioa_cfg->in_reset_reload = 0;
6384 ioa_cfg->allow_cmds = 1;
6385 ioa_cfg->reset_cmd = NULL;
6386 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6387
6388 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6389 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6390 ipr_trace;
6391 break;
6392 }
6393 }
6394 schedule_work(&ioa_cfg->work_q);
6395
6396 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6397 list_del(&hostrcb->queue);
6398 if (i++ < IPR_NUM_LOG_HCAMS)
6399 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6400 else
6401 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6402 }
6403
6404 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6405 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6406
6407 ioa_cfg->reset_retries = 0;
6408 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6409 wake_up_all(&ioa_cfg->reset_wait_q);
6410
6411 spin_unlock(ioa_cfg->host->host_lock);
6412 scsi_unblock_requests(ioa_cfg->host);
6413 spin_lock(ioa_cfg->host->host_lock);
6414
6415 if (!ioa_cfg->allow_cmds)
6416 scsi_block_requests(ioa_cfg->host);
6417
6418 LEAVE;
6419 return IPR_RC_JOB_RETURN;
6420 }
6421
6422 /**
6423 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6424 * @supported_dev: supported device struct
6425 * @vpids: vendor product id struct
6426 *
6427 * Return value:
6428 * none
6429 **/
6430 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6431 struct ipr_std_inq_vpids *vpids)
6432 {
6433 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6434 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6435 supported_dev->num_records = 1;
6436 supported_dev->data_length =
6437 cpu_to_be16(sizeof(struct ipr_supported_device));
6438 supported_dev->reserved = 0;
6439 }
6440
6441 /**
6442 * ipr_set_supported_devs - Send Set Supported Devices for a device
6443 * @ipr_cmd: ipr command struct
6444 *
6445 * This function sends a Set Supported Devices to the adapter
6446 *
6447 * Return value:
6448 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6449 **/
6450 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6451 {
6452 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6453 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6454 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6455 struct ipr_resource_entry *res = ipr_cmd->u.res;
6456
6457 ipr_cmd->job_step = ipr_ioa_reset_done;
6458
6459 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6460 if (!ipr_is_scsi_disk(res))
6461 continue;
6462
6463 ipr_cmd->u.res = res;
6464 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6465
6466 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6467 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6468 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6469
6470 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6471 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6472 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6473 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6474
6475 ipr_init_ioadl(ipr_cmd,
6476 ioa_cfg->vpd_cbs_dma +
6477 offsetof(struct ipr_misc_cbs, supp_dev),
6478 sizeof(struct ipr_supported_device),
6479 IPR_IOADL_FLAGS_WRITE_LAST);
6480
6481 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6482 IPR_SET_SUP_DEVICE_TIMEOUT);
6483
6484 if (!ioa_cfg->sis64)
6485 ipr_cmd->job_step = ipr_set_supported_devs;
6486 return IPR_RC_JOB_RETURN;
6487 }
6488
6489 return IPR_RC_JOB_CONTINUE;
6490 }
6491
6492 /**
6493 * ipr_get_mode_page - Locate specified mode page
6494 * @mode_pages: mode page buffer
6495 * @page_code: page code to find
6496 * @len: minimum required length for mode page
6497 *
6498 * Return value:
6499 * pointer to mode page / NULL on failure
6500 **/
6501 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6502 u32 page_code, u32 len)
6503 {
6504 struct ipr_mode_page_hdr *mode_hdr;
6505 u32 page_length;
6506 u32 length;
6507
6508 if (!mode_pages || (mode_pages->hdr.length == 0))
6509 return NULL;
6510
6511 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6512 mode_hdr = (struct ipr_mode_page_hdr *)
6513 (mode_pages->data + mode_pages->hdr.block_desc_len);
6514
6515 while (length) {
6516 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6517 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6518 return mode_hdr;
6519 break;
6520 } else {
6521 page_length = (sizeof(struct ipr_mode_page_hdr) +
6522 mode_hdr->page_length);
6523 length -= page_length;
6524 mode_hdr = (struct ipr_mode_page_hdr *)
6525 ((unsigned long)mode_hdr + page_length);
6526 }
6527 }
6528 return NULL;
6529 }
6530
6531 /**
6532 * ipr_check_term_power - Check for term power errors
6533 * @ioa_cfg: ioa config struct
6534 * @mode_pages: IOAFP mode pages buffer
6535 *
6536 * Check the IOAFP's mode page 28 for term power errors
6537 *
6538 * Return value:
6539 * nothing
6540 **/
6541 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6542 struct ipr_mode_pages *mode_pages)
6543 {
6544 int i;
6545 int entry_length;
6546 struct ipr_dev_bus_entry *bus;
6547 struct ipr_mode_page28 *mode_page;
6548
6549 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6550 sizeof(struct ipr_mode_page28));
6551
6552 entry_length = mode_page->entry_length;
6553
6554 bus = mode_page->bus;
6555
6556 for (i = 0; i < mode_page->num_entries; i++) {
6557 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6558 dev_err(&ioa_cfg->pdev->dev,
6559 "Term power is absent on scsi bus %d\n",
6560 bus->res_addr.bus);
6561 }
6562
6563 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6564 }
6565 }
6566
6567 /**
6568 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6569 * @ioa_cfg: ioa config struct
6570 *
6571 * Looks through the config table checking for SES devices. If
6572 * the SES device is in the SES table indicating a maximum SCSI
6573 * bus speed, the speed is limited for the bus.
6574 *
6575 * Return value:
6576 * none
6577 **/
6578 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6579 {
6580 u32 max_xfer_rate;
6581 int i;
6582
6583 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6584 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6585 ioa_cfg->bus_attr[i].bus_width);
6586
6587 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6588 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6589 }
6590 }
6591
6592 /**
6593 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6594 * @ioa_cfg: ioa config struct
6595 * @mode_pages: mode page 28 buffer
6596 *
6597 * Updates mode page 28 based on driver configuration
6598 *
6599 * Return value:
6600 * none
6601 **/
6602 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6603 struct ipr_mode_pages *mode_pages)
6604 {
6605 int i, entry_length;
6606 struct ipr_dev_bus_entry *bus;
6607 struct ipr_bus_attributes *bus_attr;
6608 struct ipr_mode_page28 *mode_page;
6609
6610 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6611 sizeof(struct ipr_mode_page28));
6612
6613 entry_length = mode_page->entry_length;
6614
6615 /* Loop for each device bus entry */
6616 for (i = 0, bus = mode_page->bus;
6617 i < mode_page->num_entries;
6618 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6619 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6620 dev_err(&ioa_cfg->pdev->dev,
6621 "Invalid resource address reported: 0x%08X\n",
6622 IPR_GET_PHYS_LOC(bus->res_addr));
6623 continue;
6624 }
6625
6626 bus_attr = &ioa_cfg->bus_attr[i];
6627 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6628 bus->bus_width = bus_attr->bus_width;
6629 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6630 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6631 if (bus_attr->qas_enabled)
6632 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6633 else
6634 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6635 }
6636 }
6637
6638 /**
6639 * ipr_build_mode_select - Build a mode select command
6640 * @ipr_cmd: ipr command struct
6641 * @res_handle: resource handle to send command to
6642 * @parm: Byte 2 of Mode Sense command
6643 * @dma_addr: DMA buffer address
6644 * @xfer_len: data transfer length
6645 *
6646 * Return value:
6647 * none
6648 **/
6649 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
6650 __be32 res_handle, u8 parm,
6651 dma_addr_t dma_addr, u8 xfer_len)
6652 {
6653 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6654
6655 ioarcb->res_handle = res_handle;
6656 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6657 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6658 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6659 ioarcb->cmd_pkt.cdb[1] = parm;
6660 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6661
6662 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
6663 }
6664
6665 /**
6666 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6667 * @ipr_cmd: ipr command struct
6668 *
6669 * This function sets up the SCSI bus attributes and sends
6670 * a Mode Select for Page 28 to activate them.
6671 *
6672 * Return value:
6673 * IPR_RC_JOB_RETURN
6674 **/
6675 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6676 {
6677 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6678 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6679 int length;
6680
6681 ENTER;
6682 ipr_scsi_bus_speed_limit(ioa_cfg);
6683 ipr_check_term_power(ioa_cfg, mode_pages);
6684 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6685 length = mode_pages->hdr.length + 1;
6686 mode_pages->hdr.length = 0;
6687
6688 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6689 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6690 length);
6691
6692 ipr_cmd->job_step = ipr_set_supported_devs;
6693 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6694 struct ipr_resource_entry, queue);
6695 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6696
6697 LEAVE;
6698 return IPR_RC_JOB_RETURN;
6699 }
6700
6701 /**
6702 * ipr_build_mode_sense - Builds a mode sense command
6703 * @ipr_cmd: ipr command struct
6704 * @res: resource entry struct
6705 * @parm: Byte 2 of mode sense command
6706 * @dma_addr: DMA address of mode sense buffer
6707 * @xfer_len: Size of DMA buffer
6708 *
6709 * Return value:
6710 * none
6711 **/
6712 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6713 __be32 res_handle,
6714 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
6715 {
6716 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6717
6718 ioarcb->res_handle = res_handle;
6719 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6720 ioarcb->cmd_pkt.cdb[2] = parm;
6721 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6722 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6723
6724 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6725 }
6726
6727 /**
6728 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6729 * @ipr_cmd: ipr command struct
6730 *
6731 * This function handles the failure of an IOA bringup command.
6732 *
6733 * Return value:
6734 * IPR_RC_JOB_RETURN
6735 **/
6736 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6737 {
6738 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6739 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6740
6741 dev_err(&ioa_cfg->pdev->dev,
6742 "0x%02X failed with IOASC: 0x%08X\n",
6743 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6744
6745 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6746 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6747 return IPR_RC_JOB_RETURN;
6748 }
6749
6750 /**
6751 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6752 * @ipr_cmd: ipr command struct
6753 *
6754 * This function handles the failure of a Mode Sense to the IOAFP.
6755 * Some adapters do not handle all mode pages.
6756 *
6757 * Return value:
6758 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6759 **/
6760 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6761 {
6762 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6763 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6764
6765 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6766 ipr_cmd->job_step = ipr_set_supported_devs;
6767 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6768 struct ipr_resource_entry, queue);
6769 return IPR_RC_JOB_CONTINUE;
6770 }
6771
6772 return ipr_reset_cmd_failed(ipr_cmd);
6773 }
6774
6775 /**
6776 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6777 * @ipr_cmd: ipr command struct
6778 *
6779 * This function send a Page 28 mode sense to the IOA to
6780 * retrieve SCSI bus attributes.
6781 *
6782 * Return value:
6783 * IPR_RC_JOB_RETURN
6784 **/
6785 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6786 {
6787 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6788
6789 ENTER;
6790 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6791 0x28, ioa_cfg->vpd_cbs_dma +
6792 offsetof(struct ipr_misc_cbs, mode_pages),
6793 sizeof(struct ipr_mode_pages));
6794
6795 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
6796 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
6797
6798 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6799
6800 LEAVE;
6801 return IPR_RC_JOB_RETURN;
6802 }
6803
6804 /**
6805 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6806 * @ipr_cmd: ipr command struct
6807 *
6808 * This function enables dual IOA RAID support if possible.
6809 *
6810 * Return value:
6811 * IPR_RC_JOB_RETURN
6812 **/
6813 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6814 {
6815 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6816 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6817 struct ipr_mode_page24 *mode_page;
6818 int length;
6819
6820 ENTER;
6821 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6822 sizeof(struct ipr_mode_page24));
6823
6824 if (mode_page)
6825 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6826
6827 length = mode_pages->hdr.length + 1;
6828 mode_pages->hdr.length = 0;
6829
6830 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6831 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6832 length);
6833
6834 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6835 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6836
6837 LEAVE;
6838 return IPR_RC_JOB_RETURN;
6839 }
6840
6841 /**
6842 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6843 * @ipr_cmd: ipr command struct
6844 *
6845 * This function handles the failure of a Mode Sense to the IOAFP.
6846 * Some adapters do not handle all mode pages.
6847 *
6848 * Return value:
6849 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6850 **/
6851 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6852 {
6853 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6854
6855 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6856 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6857 return IPR_RC_JOB_CONTINUE;
6858 }
6859
6860 return ipr_reset_cmd_failed(ipr_cmd);
6861 }
6862
6863 /**
6864 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6865 * @ipr_cmd: ipr command struct
6866 *
6867 * This function send a mode sense to the IOA to retrieve
6868 * the IOA Advanced Function Control mode page.
6869 *
6870 * Return value:
6871 * IPR_RC_JOB_RETURN
6872 **/
6873 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6874 {
6875 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6876
6877 ENTER;
6878 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6879 0x24, ioa_cfg->vpd_cbs_dma +
6880 offsetof(struct ipr_misc_cbs, mode_pages),
6881 sizeof(struct ipr_mode_pages));
6882
6883 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6884 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6885
6886 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6887
6888 LEAVE;
6889 return IPR_RC_JOB_RETURN;
6890 }
6891
6892 /**
6893 * ipr_init_res_table - Initialize the resource table
6894 * @ipr_cmd: ipr command struct
6895 *
6896 * This function looks through the existing resource table, comparing
6897 * it with the config table. This function will take care of old/new
6898 * devices and schedule adding/removing them from the mid-layer
6899 * as appropriate.
6900 *
6901 * Return value:
6902 * IPR_RC_JOB_CONTINUE
6903 **/
6904 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
6905 {
6906 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6907 struct ipr_resource_entry *res, *temp;
6908 struct ipr_config_table_entry_wrapper cfgtew;
6909 int entries, found, flag, i;
6910 LIST_HEAD(old_res);
6911
6912 ENTER;
6913 if (ioa_cfg->sis64)
6914 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
6915 else
6916 flag = ioa_cfg->u.cfg_table->hdr.flags;
6917
6918 if (flag & IPR_UCODE_DOWNLOAD_REQ)
6919 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6920
6921 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6922 list_move_tail(&res->queue, &old_res);
6923
6924 if (ioa_cfg->sis64)
6925 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
6926 else
6927 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
6928
6929 for (i = 0; i < entries; i++) {
6930 if (ioa_cfg->sis64)
6931 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
6932 else
6933 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
6934 found = 0;
6935
6936 list_for_each_entry_safe(res, temp, &old_res, queue) {
6937 if (ipr_is_same_device(res, &cfgtew)) {
6938 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6939 found = 1;
6940 break;
6941 }
6942 }
6943
6944 if (!found) {
6945 if (list_empty(&ioa_cfg->free_res_q)) {
6946 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6947 break;
6948 }
6949
6950 found = 1;
6951 res = list_entry(ioa_cfg->free_res_q.next,
6952 struct ipr_resource_entry, queue);
6953 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6954 ipr_init_res_entry(res, &cfgtew);
6955 res->add_to_ml = 1;
6956 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
6957 res->sdev->allow_restart = 1;
6958
6959 if (found)
6960 ipr_update_res_entry(res, &cfgtew);
6961 }
6962
6963 list_for_each_entry_safe(res, temp, &old_res, queue) {
6964 if (res->sdev) {
6965 res->del_from_ml = 1;
6966 res->res_handle = IPR_INVALID_RES_HANDLE;
6967 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6968 }
6969 }
6970
6971 list_for_each_entry_safe(res, temp, &old_res, queue) {
6972 ipr_clear_res_target(res);
6973 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6974 }
6975
6976 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6977 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6978 else
6979 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6980
6981 LEAVE;
6982 return IPR_RC_JOB_CONTINUE;
6983 }
6984
6985 /**
6986 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6987 * @ipr_cmd: ipr command struct
6988 *
6989 * This function sends a Query IOA Configuration command
6990 * to the adapter to retrieve the IOA configuration table.
6991 *
6992 * Return value:
6993 * IPR_RC_JOB_RETURN
6994 **/
6995 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6996 {
6997 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6998 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6999 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7000 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7001
7002 ENTER;
7003 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7004 ioa_cfg->dual_raid = 1;
7005 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7006 ucode_vpd->major_release, ucode_vpd->card_type,
7007 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7008 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7009 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7010
7011 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7012 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7013 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7014 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7015
7016 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7017 IPR_IOADL_FLAGS_READ_LAST);
7018
7019 ipr_cmd->job_step = ipr_init_res_table;
7020
7021 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7022
7023 LEAVE;
7024 return IPR_RC_JOB_RETURN;
7025 }
7026
7027 /**
7028 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7029 * @ipr_cmd: ipr command struct
7030 *
7031 * This utility function sends an inquiry to the adapter.
7032 *
7033 * Return value:
7034 * none
7035 **/
7036 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7037 dma_addr_t dma_addr, u8 xfer_len)
7038 {
7039 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7040
7041 ENTER;
7042 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7043 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7044
7045 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7046 ioarcb->cmd_pkt.cdb[1] = flags;
7047 ioarcb->cmd_pkt.cdb[2] = page;
7048 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7049
7050 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7051
7052 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7053 LEAVE;
7054 }
7055
7056 /**
7057 * ipr_inquiry_page_supported - Is the given inquiry page supported
7058 * @page0: inquiry page 0 buffer
7059 * @page: page code.
7060 *
7061 * This function determines if the specified inquiry page is supported.
7062 *
7063 * Return value:
7064 * 1 if page is supported / 0 if not
7065 **/
7066 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7067 {
7068 int i;
7069
7070 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7071 if (page0->page[i] == page)
7072 return 1;
7073
7074 return 0;
7075 }
7076
7077 /**
7078 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7079 * @ipr_cmd: ipr command struct
7080 *
7081 * This function sends a Page 0xD0 inquiry to the adapter
7082 * to retrieve adapter capabilities.
7083 *
7084 * Return value:
7085 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7086 **/
7087 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7088 {
7089 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7090 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7091 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7092
7093 ENTER;
7094 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7095 memset(cap, 0, sizeof(*cap));
7096
7097 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7098 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7099 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7100 sizeof(struct ipr_inquiry_cap));
7101 return IPR_RC_JOB_RETURN;
7102 }
7103
7104 LEAVE;
7105 return IPR_RC_JOB_CONTINUE;
7106 }
7107
7108 /**
7109 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7110 * @ipr_cmd: ipr command struct
7111 *
7112 * This function sends a Page 3 inquiry to the adapter
7113 * to retrieve software VPD information.
7114 *
7115 * Return value:
7116 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7117 **/
7118 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7119 {
7120 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7121
7122 ENTER;
7123
7124 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7125
7126 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7127 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7128 sizeof(struct ipr_inquiry_page3));
7129
7130 LEAVE;
7131 return IPR_RC_JOB_RETURN;
7132 }
7133
7134 /**
7135 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7136 * @ipr_cmd: ipr command struct
7137 *
7138 * This function sends a Page 0 inquiry to the adapter
7139 * to retrieve supported inquiry pages.
7140 *
7141 * Return value:
7142 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7143 **/
7144 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7145 {
7146 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7147 char type[5];
7148
7149 ENTER;
7150
7151 /* Grab the type out of the VPD and store it away */
7152 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7153 type[4] = '\0';
7154 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7155
7156 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7157
7158 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7159 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7160 sizeof(struct ipr_inquiry_page0));
7161
7162 LEAVE;
7163 return IPR_RC_JOB_RETURN;
7164 }
7165
7166 /**
7167 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7168 * @ipr_cmd: ipr command struct
7169 *
7170 * This function sends a standard inquiry to the adapter.
7171 *
7172 * Return value:
7173 * IPR_RC_JOB_RETURN
7174 **/
7175 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7176 {
7177 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7178
7179 ENTER;
7180 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7181
7182 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7183 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7184 sizeof(struct ipr_ioa_vpd));
7185
7186 LEAVE;
7187 return IPR_RC_JOB_RETURN;
7188 }
7189
7190 /**
7191 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7192 * @ipr_cmd: ipr command struct
7193 *
7194 * This function send an Identify Host Request Response Queue
7195 * command to establish the HRRQ with the adapter.
7196 *
7197 * Return value:
7198 * IPR_RC_JOB_RETURN
7199 **/
7200 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7201 {
7202 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7203 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7204
7205 ENTER;
7206 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7207
7208 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7209 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7210
7211 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7212 if (ioa_cfg->sis64)
7213 ioarcb->cmd_pkt.cdb[1] = 0x1;
7214 ioarcb->cmd_pkt.cdb[2] =
7215 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff;
7216 ioarcb->cmd_pkt.cdb[3] =
7217 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff;
7218 ioarcb->cmd_pkt.cdb[4] =
7219 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff;
7220 ioarcb->cmd_pkt.cdb[5] =
7221 ((u64) ioa_cfg->host_rrq_dma) & 0xff;
7222 ioarcb->cmd_pkt.cdb[7] =
7223 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
7224 ioarcb->cmd_pkt.cdb[8] =
7225 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
7226
7227 if (ioa_cfg->sis64) {
7228 ioarcb->cmd_pkt.cdb[10] =
7229 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff;
7230 ioarcb->cmd_pkt.cdb[11] =
7231 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff;
7232 ioarcb->cmd_pkt.cdb[12] =
7233 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff;
7234 ioarcb->cmd_pkt.cdb[13] =
7235 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff;
7236 }
7237
7238 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7239
7240 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7241
7242 LEAVE;
7243 return IPR_RC_JOB_RETURN;
7244 }
7245
7246 /**
7247 * ipr_reset_timer_done - Adapter reset timer function
7248 * @ipr_cmd: ipr command struct
7249 *
7250 * Description: This function is used in adapter reset processing
7251 * for timing events. If the reset_cmd pointer in the IOA
7252 * config struct is not this adapter's we are doing nested
7253 * resets and fail_all_ops will take care of freeing the
7254 * command block.
7255 *
7256 * Return value:
7257 * none
7258 **/
7259 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7260 {
7261 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7262 unsigned long lock_flags = 0;
7263
7264 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7265
7266 if (ioa_cfg->reset_cmd == ipr_cmd) {
7267 list_del(&ipr_cmd->queue);
7268 ipr_cmd->done(ipr_cmd);
7269 }
7270
7271 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7272 }
7273
7274 /**
7275 * ipr_reset_start_timer - Start a timer for adapter reset job
7276 * @ipr_cmd: ipr command struct
7277 * @timeout: timeout value
7278 *
7279 * Description: This function is used in adapter reset processing
7280 * for timing events. If the reset_cmd pointer in the IOA
7281 * config struct is not this adapter's we are doing nested
7282 * resets and fail_all_ops will take care of freeing the
7283 * command block.
7284 *
7285 * Return value:
7286 * none
7287 **/
7288 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7289 unsigned long timeout)
7290 {
7291 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7292 ipr_cmd->done = ipr_reset_ioa_job;
7293
7294 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7295 ipr_cmd->timer.expires = jiffies + timeout;
7296 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7297 add_timer(&ipr_cmd->timer);
7298 }
7299
7300 /**
7301 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7302 * @ioa_cfg: ioa cfg struct
7303 *
7304 * Return value:
7305 * nothing
7306 **/
7307 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7308 {
7309 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
7310
7311 /* Initialize Host RRQ pointers */
7312 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
7313 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
7314 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
7315 ioa_cfg->toggle_bit = 1;
7316
7317 /* Zero out config table */
7318 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7319 }
7320
7321 /**
7322 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7323 * @ipr_cmd: ipr command struct
7324 *
7325 * Return value:
7326 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7327 **/
7328 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7329 {
7330 unsigned long stage, stage_time;
7331 u32 feedback;
7332 volatile u32 int_reg;
7333 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7334 u64 maskval = 0;
7335
7336 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7337 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7338 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7339
7340 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7341
7342 /* sanity check the stage_time value */
7343 if (stage_time == 0)
7344 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7345 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7346 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7347 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7348 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7349
7350 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7351 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7352 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7353 stage_time = ioa_cfg->transop_timeout;
7354 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7355 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7356 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7357 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7358 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7359 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7360 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7361 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7362 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7363 return IPR_RC_JOB_CONTINUE;
7364 }
7365 }
7366
7367 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7368 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7369 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7370 ipr_cmd->done = ipr_reset_ioa_job;
7371 add_timer(&ipr_cmd->timer);
7372 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7373
7374 return IPR_RC_JOB_RETURN;
7375 }
7376
7377 /**
7378 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7379 * @ipr_cmd: ipr command struct
7380 *
7381 * This function reinitializes some control blocks and
7382 * enables destructive diagnostics on the adapter.
7383 *
7384 * Return value:
7385 * IPR_RC_JOB_RETURN
7386 **/
7387 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7388 {
7389 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7390 volatile u32 int_reg;
7391 volatile u64 maskval;
7392
7393 ENTER;
7394 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7395 ipr_init_ioa_mem(ioa_cfg);
7396
7397 ioa_cfg->allow_interrupts = 1;
7398 if (ioa_cfg->sis64) {
7399 /* Set the adapter to the correct endian mode. */
7400 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7401 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7402 }
7403
7404 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7405
7406 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7407 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7408 ioa_cfg->regs.clr_interrupt_mask_reg32);
7409 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7410 return IPR_RC_JOB_CONTINUE;
7411 }
7412
7413 /* Enable destructive diagnostics on IOA */
7414 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7415
7416 if (ioa_cfg->sis64) {
7417 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7418 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7419 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7420 } else
7421 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7422
7423 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7424
7425 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7426
7427 if (ioa_cfg->sis64) {
7428 ipr_cmd->job_step = ipr_reset_next_stage;
7429 return IPR_RC_JOB_CONTINUE;
7430 }
7431
7432 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7433 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7434 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7435 ipr_cmd->done = ipr_reset_ioa_job;
7436 add_timer(&ipr_cmd->timer);
7437 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7438
7439 LEAVE;
7440 return IPR_RC_JOB_RETURN;
7441 }
7442
7443 /**
7444 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7445 * @ipr_cmd: ipr command struct
7446 *
7447 * This function is invoked when an adapter dump has run out
7448 * of processing time.
7449 *
7450 * Return value:
7451 * IPR_RC_JOB_CONTINUE
7452 **/
7453 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7454 {
7455 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7456
7457 if (ioa_cfg->sdt_state == GET_DUMP)
7458 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7459 else if (ioa_cfg->sdt_state == READ_DUMP)
7460 ioa_cfg->sdt_state = ABORT_DUMP;
7461
7462 ioa_cfg->dump_timeout = 1;
7463 ipr_cmd->job_step = ipr_reset_alert;
7464
7465 return IPR_RC_JOB_CONTINUE;
7466 }
7467
7468 /**
7469 * ipr_unit_check_no_data - Log a unit check/no data error log
7470 * @ioa_cfg: ioa config struct
7471 *
7472 * Logs an error indicating the adapter unit checked, but for some
7473 * reason, we were unable to fetch the unit check buffer.
7474 *
7475 * Return value:
7476 * nothing
7477 **/
7478 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7479 {
7480 ioa_cfg->errors_logged++;
7481 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7482 }
7483
7484 /**
7485 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7486 * @ioa_cfg: ioa config struct
7487 *
7488 * Fetches the unit check buffer from the adapter by clocking the data
7489 * through the mailbox register.
7490 *
7491 * Return value:
7492 * nothing
7493 **/
7494 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7495 {
7496 unsigned long mailbox;
7497 struct ipr_hostrcb *hostrcb;
7498 struct ipr_uc_sdt sdt;
7499 int rc, length;
7500 u32 ioasc;
7501
7502 mailbox = readl(ioa_cfg->ioa_mailbox);
7503
7504 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
7505 ipr_unit_check_no_data(ioa_cfg);
7506 return;
7507 }
7508
7509 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7510 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7511 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7512
7513 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7514 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7515 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
7516 ipr_unit_check_no_data(ioa_cfg);
7517 return;
7518 }
7519
7520 /* Find length of the first sdt entry (UC buffer) */
7521 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7522 length = be32_to_cpu(sdt.entry[0].end_token);
7523 else
7524 length = (be32_to_cpu(sdt.entry[0].end_token) -
7525 be32_to_cpu(sdt.entry[0].start_token)) &
7526 IPR_FMT2_MBX_ADDR_MASK;
7527
7528 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7529 struct ipr_hostrcb, queue);
7530 list_del(&hostrcb->queue);
7531 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7532
7533 rc = ipr_get_ldump_data_section(ioa_cfg,
7534 be32_to_cpu(sdt.entry[0].start_token),
7535 (__be32 *)&hostrcb->hcam,
7536 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7537
7538 if (!rc) {
7539 ipr_handle_log_data(ioa_cfg, hostrcb);
7540 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
7541 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7542 ioa_cfg->sdt_state == GET_DUMP)
7543 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7544 } else
7545 ipr_unit_check_no_data(ioa_cfg);
7546
7547 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7548 }
7549
7550 /**
7551 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
7552 * @ipr_cmd: ipr command struct
7553 *
7554 * Description: This function will call to get the unit check buffer.
7555 *
7556 * Return value:
7557 * IPR_RC_JOB_RETURN
7558 **/
7559 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
7560 {
7561 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7562
7563 ENTER;
7564 ioa_cfg->ioa_unit_checked = 0;
7565 ipr_get_unit_check_buffer(ioa_cfg);
7566 ipr_cmd->job_step = ipr_reset_alert;
7567 ipr_reset_start_timer(ipr_cmd, 0);
7568
7569 LEAVE;
7570 return IPR_RC_JOB_RETURN;
7571 }
7572
7573 /**
7574 * ipr_reset_restore_cfg_space - Restore PCI config space.
7575 * @ipr_cmd: ipr command struct
7576 *
7577 * Description: This function restores the saved PCI config space of
7578 * the adapter, fails all outstanding ops back to the callers, and
7579 * fetches the dump/unit check if applicable to this reset.
7580 *
7581 * Return value:
7582 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7583 **/
7584 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7585 {
7586 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7587 u32 int_reg;
7588
7589 ENTER;
7590 ioa_cfg->pdev->state_saved = true;
7591 pci_restore_state(ioa_cfg->pdev);
7592
7593 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
7594 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7595 return IPR_RC_JOB_CONTINUE;
7596 }
7597
7598 ipr_fail_all_ops(ioa_cfg);
7599
7600 if (ioa_cfg->sis64) {
7601 /* Set the adapter to the correct endian mode. */
7602 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7603 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7604 }
7605
7606 if (ioa_cfg->ioa_unit_checked) {
7607 if (ioa_cfg->sis64) {
7608 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
7609 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
7610 return IPR_RC_JOB_RETURN;
7611 } else {
7612 ioa_cfg->ioa_unit_checked = 0;
7613 ipr_get_unit_check_buffer(ioa_cfg);
7614 ipr_cmd->job_step = ipr_reset_alert;
7615 ipr_reset_start_timer(ipr_cmd, 0);
7616 return IPR_RC_JOB_RETURN;
7617 }
7618 }
7619
7620 if (ioa_cfg->in_ioa_bringdown) {
7621 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7622 } else {
7623 ipr_cmd->job_step = ipr_reset_enable_ioa;
7624
7625 if (GET_DUMP == ioa_cfg->sdt_state) {
7626 ioa_cfg->sdt_state = READ_DUMP;
7627 ioa_cfg->dump_timeout = 0;
7628 if (ioa_cfg->sis64)
7629 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
7630 else
7631 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
7632 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7633 schedule_work(&ioa_cfg->work_q);
7634 return IPR_RC_JOB_RETURN;
7635 }
7636 }
7637
7638 LEAVE;
7639 return IPR_RC_JOB_CONTINUE;
7640 }
7641
7642 /**
7643 * ipr_reset_bist_done - BIST has completed on the adapter.
7644 * @ipr_cmd: ipr command struct
7645 *
7646 * Description: Unblock config space and resume the reset process.
7647 *
7648 * Return value:
7649 * IPR_RC_JOB_CONTINUE
7650 **/
7651 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7652 {
7653 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7654
7655 ENTER;
7656 if (ioa_cfg->cfg_locked)
7657 pci_cfg_access_unlock(ioa_cfg->pdev);
7658 ioa_cfg->cfg_locked = 0;
7659 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7660 LEAVE;
7661 return IPR_RC_JOB_CONTINUE;
7662 }
7663
7664 /**
7665 * ipr_reset_start_bist - Run BIST on the adapter.
7666 * @ipr_cmd: ipr command struct
7667 *
7668 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7669 *
7670 * Return value:
7671 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7672 **/
7673 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7674 {
7675 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7676 int rc = PCIBIOS_SUCCESSFUL;
7677
7678 ENTER;
7679 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
7680 writel(IPR_UPROCI_SIS64_START_BIST,
7681 ioa_cfg->regs.set_uproc_interrupt_reg32);
7682 else
7683 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7684
7685 if (rc == PCIBIOS_SUCCESSFUL) {
7686 ipr_cmd->job_step = ipr_reset_bist_done;
7687 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7688 rc = IPR_RC_JOB_RETURN;
7689 } else {
7690 if (ioa_cfg->cfg_locked)
7691 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
7692 ioa_cfg->cfg_locked = 0;
7693 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7694 rc = IPR_RC_JOB_CONTINUE;
7695 }
7696
7697 LEAVE;
7698 return rc;
7699 }
7700
7701 /**
7702 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7703 * @ipr_cmd: ipr command struct
7704 *
7705 * Description: This clears PCI reset to the adapter and delays two seconds.
7706 *
7707 * Return value:
7708 * IPR_RC_JOB_RETURN
7709 **/
7710 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7711 {
7712 ENTER;
7713 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
7714 ipr_cmd->job_step = ipr_reset_bist_done;
7715 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7716 LEAVE;
7717 return IPR_RC_JOB_RETURN;
7718 }
7719
7720 /**
7721 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
7722 * @ipr_cmd: ipr command struct
7723 *
7724 * Description: This asserts PCI reset to the adapter.
7725 *
7726 * Return value:
7727 * IPR_RC_JOB_RETURN
7728 **/
7729 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
7730 {
7731 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7732 struct pci_dev *pdev = ioa_cfg->pdev;
7733
7734 ENTER;
7735 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7736 ipr_cmd->job_step = ipr_reset_slot_reset_done;
7737 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
7738 LEAVE;
7739 return IPR_RC_JOB_RETURN;
7740 }
7741
7742 /**
7743 * ipr_reset_block_config_access_wait - Wait for permission to block config access
7744 * @ipr_cmd: ipr command struct
7745 *
7746 * Description: This attempts to block config access to the IOA.
7747 *
7748 * Return value:
7749 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7750 **/
7751 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
7752 {
7753 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7754 int rc = IPR_RC_JOB_CONTINUE;
7755
7756 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
7757 ioa_cfg->cfg_locked = 1;
7758 ipr_cmd->job_step = ioa_cfg->reset;
7759 } else {
7760 if (ipr_cmd->u.time_left) {
7761 rc = IPR_RC_JOB_RETURN;
7762 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7763 ipr_reset_start_timer(ipr_cmd,
7764 IPR_CHECK_FOR_RESET_TIMEOUT);
7765 } else {
7766 ipr_cmd->job_step = ioa_cfg->reset;
7767 dev_err(&ioa_cfg->pdev->dev,
7768 "Timed out waiting to lock config access. Resetting anyway.\n");
7769 }
7770 }
7771
7772 return rc;
7773 }
7774
7775 /**
7776 * ipr_reset_block_config_access - Block config access to the IOA
7777 * @ipr_cmd: ipr command struct
7778 *
7779 * Description: This attempts to block config access to the IOA
7780 *
7781 * Return value:
7782 * IPR_RC_JOB_CONTINUE
7783 **/
7784 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
7785 {
7786 ipr_cmd->ioa_cfg->cfg_locked = 0;
7787 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
7788 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7789 return IPR_RC_JOB_CONTINUE;
7790 }
7791
7792 /**
7793 * ipr_reset_allowed - Query whether or not IOA can be reset
7794 * @ioa_cfg: ioa config struct
7795 *
7796 * Return value:
7797 * 0 if reset not allowed / non-zero if reset is allowed
7798 **/
7799 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
7800 {
7801 volatile u32 temp_reg;
7802
7803 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7804 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
7805 }
7806
7807 /**
7808 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
7809 * @ipr_cmd: ipr command struct
7810 *
7811 * Description: This function waits for adapter permission to run BIST,
7812 * then runs BIST. If the adapter does not give permission after a
7813 * reasonable time, we will reset the adapter anyway. The impact of
7814 * resetting the adapter without warning the adapter is the risk of
7815 * losing the persistent error log on the adapter. If the adapter is
7816 * reset while it is writing to the flash on the adapter, the flash
7817 * segment will have bad ECC and be zeroed.
7818 *
7819 * Return value:
7820 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7821 **/
7822 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
7823 {
7824 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7825 int rc = IPR_RC_JOB_RETURN;
7826
7827 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
7828 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7829 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7830 } else {
7831 ipr_cmd->job_step = ipr_reset_block_config_access;
7832 rc = IPR_RC_JOB_CONTINUE;
7833 }
7834
7835 return rc;
7836 }
7837
7838 /**
7839 * ipr_reset_alert - Alert the adapter of a pending reset
7840 * @ipr_cmd: ipr command struct
7841 *
7842 * Description: This function alerts the adapter that it will be reset.
7843 * If memory space is not currently enabled, proceed directly
7844 * to running BIST on the adapter. The timer must always be started
7845 * so we guarantee we do not run BIST from ipr_isr.
7846 *
7847 * Return value:
7848 * IPR_RC_JOB_RETURN
7849 **/
7850 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
7851 {
7852 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7853 u16 cmd_reg;
7854 int rc;
7855
7856 ENTER;
7857 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
7858
7859 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
7860 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
7861 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
7862 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
7863 } else {
7864 ipr_cmd->job_step = ipr_reset_block_config_access;
7865 }
7866
7867 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7868 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7869
7870 LEAVE;
7871 return IPR_RC_JOB_RETURN;
7872 }
7873
7874 /**
7875 * ipr_reset_ucode_download_done - Microcode download completion
7876 * @ipr_cmd: ipr command struct
7877 *
7878 * Description: This function unmaps the microcode download buffer.
7879 *
7880 * Return value:
7881 * IPR_RC_JOB_CONTINUE
7882 **/
7883 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
7884 {
7885 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7886 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7887
7888 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
7889 sglist->num_sg, DMA_TO_DEVICE);
7890
7891 ipr_cmd->job_step = ipr_reset_alert;
7892 return IPR_RC_JOB_CONTINUE;
7893 }
7894
7895 /**
7896 * ipr_reset_ucode_download - Download microcode to the adapter
7897 * @ipr_cmd: ipr command struct
7898 *
7899 * Description: This function checks to see if it there is microcode
7900 * to download to the adapter. If there is, a download is performed.
7901 *
7902 * Return value:
7903 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7904 **/
7905 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
7906 {
7907 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7908 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7909
7910 ENTER;
7911 ipr_cmd->job_step = ipr_reset_alert;
7912
7913 if (!sglist)
7914 return IPR_RC_JOB_CONTINUE;
7915
7916 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7917 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7918 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
7919 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
7920 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
7921 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
7922 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
7923
7924 if (ioa_cfg->sis64)
7925 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
7926 else
7927 ipr_build_ucode_ioadl(ipr_cmd, sglist);
7928 ipr_cmd->job_step = ipr_reset_ucode_download_done;
7929
7930 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7931 IPR_WRITE_BUFFER_TIMEOUT);
7932
7933 LEAVE;
7934 return IPR_RC_JOB_RETURN;
7935 }
7936
7937 /**
7938 * ipr_reset_shutdown_ioa - Shutdown the adapter
7939 * @ipr_cmd: ipr command struct
7940 *
7941 * Description: This function issues an adapter shutdown of the
7942 * specified type to the specified adapter as part of the
7943 * adapter reset job.
7944 *
7945 * Return value:
7946 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7947 **/
7948 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
7949 {
7950 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7951 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
7952 unsigned long timeout;
7953 int rc = IPR_RC_JOB_CONTINUE;
7954
7955 ENTER;
7956 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
7957 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7958 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7959 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
7960 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
7961
7962 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
7963 timeout = IPR_SHUTDOWN_TIMEOUT;
7964 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
7965 timeout = IPR_INTERNAL_TIMEOUT;
7966 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7967 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
7968 else
7969 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
7970
7971 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
7972
7973 rc = IPR_RC_JOB_RETURN;
7974 ipr_cmd->job_step = ipr_reset_ucode_download;
7975 } else
7976 ipr_cmd->job_step = ipr_reset_alert;
7977
7978 LEAVE;
7979 return rc;
7980 }
7981
7982 /**
7983 * ipr_reset_ioa_job - Adapter reset job
7984 * @ipr_cmd: ipr command struct
7985 *
7986 * Description: This function is the job router for the adapter reset job.
7987 *
7988 * Return value:
7989 * none
7990 **/
7991 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
7992 {
7993 u32 rc, ioasc;
7994 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7995
7996 do {
7997 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7998
7999 if (ioa_cfg->reset_cmd != ipr_cmd) {
8000 /*
8001 * We are doing nested adapter resets and this is
8002 * not the current reset job.
8003 */
8004 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8005 return;
8006 }
8007
8008 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8009 rc = ipr_cmd->job_step_failed(ipr_cmd);
8010 if (rc == IPR_RC_JOB_RETURN)
8011 return;
8012 }
8013
8014 ipr_reinit_ipr_cmnd(ipr_cmd);
8015 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8016 rc = ipr_cmd->job_step(ipr_cmd);
8017 } while(rc == IPR_RC_JOB_CONTINUE);
8018 }
8019
8020 /**
8021 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8022 * @ioa_cfg: ioa config struct
8023 * @job_step: first job step of reset job
8024 * @shutdown_type: shutdown type
8025 *
8026 * Description: This function will initiate the reset of the given adapter
8027 * starting at the selected job step.
8028 * If the caller needs to wait on the completion of the reset,
8029 * the caller must sleep on the reset_wait_q.
8030 *
8031 * Return value:
8032 * none
8033 **/
8034 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8035 int (*job_step) (struct ipr_cmnd *),
8036 enum ipr_shutdown_type shutdown_type)
8037 {
8038 struct ipr_cmnd *ipr_cmd;
8039
8040 ioa_cfg->in_reset_reload = 1;
8041 ioa_cfg->allow_cmds = 0;
8042 scsi_block_requests(ioa_cfg->host);
8043
8044 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
8045 ioa_cfg->reset_cmd = ipr_cmd;
8046 ipr_cmd->job_step = job_step;
8047 ipr_cmd->u.shutdown_type = shutdown_type;
8048
8049 ipr_reset_ioa_job(ipr_cmd);
8050 }
8051
8052 /**
8053 * ipr_initiate_ioa_reset - Initiate an adapter reset
8054 * @ioa_cfg: ioa config struct
8055 * @shutdown_type: shutdown type
8056 *
8057 * Description: This function will initiate the reset of the given adapter.
8058 * If the caller needs to wait on the completion of the reset,
8059 * the caller must sleep on the reset_wait_q.
8060 *
8061 * Return value:
8062 * none
8063 **/
8064 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8065 enum ipr_shutdown_type shutdown_type)
8066 {
8067 if (ioa_cfg->ioa_is_dead)
8068 return;
8069
8070 if (ioa_cfg->in_reset_reload) {
8071 if (ioa_cfg->sdt_state == GET_DUMP)
8072 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8073 else if (ioa_cfg->sdt_state == READ_DUMP)
8074 ioa_cfg->sdt_state = ABORT_DUMP;
8075 }
8076
8077 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
8078 dev_err(&ioa_cfg->pdev->dev,
8079 "IOA taken offline - error recovery failed\n");
8080
8081 ioa_cfg->reset_retries = 0;
8082 ioa_cfg->ioa_is_dead = 1;
8083
8084 if (ioa_cfg->in_ioa_bringdown) {
8085 ioa_cfg->reset_cmd = NULL;
8086 ioa_cfg->in_reset_reload = 0;
8087 ipr_fail_all_ops(ioa_cfg);
8088 wake_up_all(&ioa_cfg->reset_wait_q);
8089
8090 spin_unlock_irq(ioa_cfg->host->host_lock);
8091 scsi_unblock_requests(ioa_cfg->host);
8092 spin_lock_irq(ioa_cfg->host->host_lock);
8093 return;
8094 } else {
8095 ioa_cfg->in_ioa_bringdown = 1;
8096 shutdown_type = IPR_SHUTDOWN_NONE;
8097 }
8098 }
8099
8100 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
8101 shutdown_type);
8102 }
8103
8104 /**
8105 * ipr_reset_freeze - Hold off all I/O activity
8106 * @ipr_cmd: ipr command struct
8107 *
8108 * Description: If the PCI slot is frozen, hold off all I/O
8109 * activity; then, as soon as the slot is available again,
8110 * initiate an adapter reset.
8111 */
8112 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
8113 {
8114 /* Disallow new interrupts, avoid loop */
8115 ipr_cmd->ioa_cfg->allow_interrupts = 0;
8116 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
8117 ipr_cmd->done = ipr_reset_ioa_job;
8118 return IPR_RC_JOB_RETURN;
8119 }
8120
8121 /**
8122 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
8123 * @pdev: PCI device struct
8124 *
8125 * Description: This routine is called to tell us that the PCI bus
8126 * is down. Can't do anything here, except put the device driver
8127 * into a holding pattern, waiting for the PCI bus to come back.
8128 */
8129 static void ipr_pci_frozen(struct pci_dev *pdev)
8130 {
8131 unsigned long flags = 0;
8132 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8133
8134 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8135 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
8136 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8137 }
8138
8139 /**
8140 * ipr_pci_slot_reset - Called when PCI slot has been reset.
8141 * @pdev: PCI device struct
8142 *
8143 * Description: This routine is called by the pci error recovery
8144 * code after the PCI slot has been reset, just before we
8145 * should resume normal operations.
8146 */
8147 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
8148 {
8149 unsigned long flags = 0;
8150 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8151
8152 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8153 if (ioa_cfg->needs_warm_reset)
8154 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8155 else
8156 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
8157 IPR_SHUTDOWN_NONE);
8158 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8159 return PCI_ERS_RESULT_RECOVERED;
8160 }
8161
8162 /**
8163 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
8164 * @pdev: PCI device struct
8165 *
8166 * Description: This routine is called when the PCI bus has
8167 * permanently failed.
8168 */
8169 static void ipr_pci_perm_failure(struct pci_dev *pdev)
8170 {
8171 unsigned long flags = 0;
8172 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8173
8174 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8175 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8176 ioa_cfg->sdt_state = ABORT_DUMP;
8177 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
8178 ioa_cfg->in_ioa_bringdown = 1;
8179 ioa_cfg->allow_cmds = 0;
8180 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8181 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8182 }
8183
8184 /**
8185 * ipr_pci_error_detected - Called when a PCI error is detected.
8186 * @pdev: PCI device struct
8187 * @state: PCI channel state
8188 *
8189 * Description: Called when a PCI error is detected.
8190 *
8191 * Return value:
8192 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8193 */
8194 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8195 pci_channel_state_t state)
8196 {
8197 switch (state) {
8198 case pci_channel_io_frozen:
8199 ipr_pci_frozen(pdev);
8200 return PCI_ERS_RESULT_NEED_RESET;
8201 case pci_channel_io_perm_failure:
8202 ipr_pci_perm_failure(pdev);
8203 return PCI_ERS_RESULT_DISCONNECT;
8204 break;
8205 default:
8206 break;
8207 }
8208 return PCI_ERS_RESULT_NEED_RESET;
8209 }
8210
8211 /**
8212 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8213 * @ioa_cfg: ioa cfg struct
8214 *
8215 * Description: This is the second phase of adapter intialization
8216 * This function takes care of initilizing the adapter to the point
8217 * where it can accept new commands.
8218
8219 * Return value:
8220 * 0 on success / -EIO on failure
8221 **/
8222 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8223 {
8224 int rc = 0;
8225 unsigned long host_lock_flags = 0;
8226
8227 ENTER;
8228 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8229 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
8230 if (ioa_cfg->needs_hard_reset) {
8231 ioa_cfg->needs_hard_reset = 0;
8232 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8233 } else
8234 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8235 IPR_SHUTDOWN_NONE);
8236
8237 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8238 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8239 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8240
8241 if (ioa_cfg->ioa_is_dead) {
8242 rc = -EIO;
8243 } else if (ipr_invalid_adapter(ioa_cfg)) {
8244 if (!ipr_testmode)
8245 rc = -EIO;
8246
8247 dev_err(&ioa_cfg->pdev->dev,
8248 "Adapter not supported in this hardware configuration.\n");
8249 }
8250
8251 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8252
8253 LEAVE;
8254 return rc;
8255 }
8256
8257 /**
8258 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8259 * @ioa_cfg: ioa config struct
8260 *
8261 * Return value:
8262 * none
8263 **/
8264 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8265 {
8266 int i;
8267
8268 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8269 if (ioa_cfg->ipr_cmnd_list[i])
8270 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8271 ioa_cfg->ipr_cmnd_list[i],
8272 ioa_cfg->ipr_cmnd_list_dma[i]);
8273
8274 ioa_cfg->ipr_cmnd_list[i] = NULL;
8275 }
8276
8277 if (ioa_cfg->ipr_cmd_pool)
8278 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
8279
8280 ioa_cfg->ipr_cmd_pool = NULL;
8281 }
8282
8283 /**
8284 * ipr_free_mem - Frees memory allocated for an adapter
8285 * @ioa_cfg: ioa cfg struct
8286 *
8287 * Return value:
8288 * nothing
8289 **/
8290 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8291 {
8292 int i;
8293
8294 kfree(ioa_cfg->res_entries);
8295 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8296 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8297 ipr_free_cmd_blks(ioa_cfg);
8298 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8299 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8300 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8301 ioa_cfg->u.cfg_table,
8302 ioa_cfg->cfg_table_dma);
8303
8304 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8305 pci_free_consistent(ioa_cfg->pdev,
8306 sizeof(struct ipr_hostrcb),
8307 ioa_cfg->hostrcb[i],
8308 ioa_cfg->hostrcb_dma[i]);
8309 }
8310
8311 ipr_free_dump(ioa_cfg);
8312 kfree(ioa_cfg->trace);
8313 }
8314
8315 /**
8316 * ipr_free_all_resources - Free all allocated resources for an adapter.
8317 * @ipr_cmd: ipr command struct
8318 *
8319 * This function frees all allocated resources for the
8320 * specified adapter.
8321 *
8322 * Return value:
8323 * none
8324 **/
8325 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8326 {
8327 struct pci_dev *pdev = ioa_cfg->pdev;
8328
8329 ENTER;
8330 free_irq(pdev->irq, ioa_cfg);
8331 pci_disable_msi(pdev);
8332 iounmap(ioa_cfg->hdw_dma_regs);
8333 pci_release_regions(pdev);
8334 ipr_free_mem(ioa_cfg);
8335 scsi_host_put(ioa_cfg->host);
8336 pci_disable_device(pdev);
8337 LEAVE;
8338 }
8339
8340 /**
8341 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8342 * @ioa_cfg: ioa config struct
8343 *
8344 * Return value:
8345 * 0 on success / -ENOMEM on allocation failure
8346 **/
8347 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8348 {
8349 struct ipr_cmnd *ipr_cmd;
8350 struct ipr_ioarcb *ioarcb;
8351 dma_addr_t dma_addr;
8352 int i;
8353
8354 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
8355 sizeof(struct ipr_cmnd), 16, 0);
8356
8357 if (!ioa_cfg->ipr_cmd_pool)
8358 return -ENOMEM;
8359
8360 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8361 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
8362
8363 if (!ipr_cmd) {
8364 ipr_free_cmd_blks(ioa_cfg);
8365 return -ENOMEM;
8366 }
8367
8368 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8369 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8370 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8371
8372 ioarcb = &ipr_cmd->ioarcb;
8373 ipr_cmd->dma_addr = dma_addr;
8374 if (ioa_cfg->sis64)
8375 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8376 else
8377 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8378
8379 ioarcb->host_response_handle = cpu_to_be32(i << 2);
8380 if (ioa_cfg->sis64) {
8381 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8382 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8383 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
8384 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
8385 } else {
8386 ioarcb->write_ioadl_addr =
8387 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8388 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8389 ioarcb->ioasa_host_pci_addr =
8390 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
8391 }
8392 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8393 ipr_cmd->cmd_index = i;
8394 ipr_cmd->ioa_cfg = ioa_cfg;
8395 ipr_cmd->sense_buffer_dma = dma_addr +
8396 offsetof(struct ipr_cmnd, sense_buffer);
8397
8398 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8399 }
8400
8401 return 0;
8402 }
8403
8404 /**
8405 * ipr_alloc_mem - Allocate memory for an adapter
8406 * @ioa_cfg: ioa config struct
8407 *
8408 * Return value:
8409 * 0 on success / non-zero for error
8410 **/
8411 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8412 {
8413 struct pci_dev *pdev = ioa_cfg->pdev;
8414 int i, rc = -ENOMEM;
8415
8416 ENTER;
8417 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
8418 ioa_cfg->max_devs_supported, GFP_KERNEL);
8419
8420 if (!ioa_cfg->res_entries)
8421 goto out;
8422
8423 if (ioa_cfg->sis64) {
8424 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8425 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8426 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8427 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8428 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8429 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8430 }
8431
8432 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
8433 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
8434 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8435 }
8436
8437 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8438 sizeof(struct ipr_misc_cbs),
8439 &ioa_cfg->vpd_cbs_dma);
8440
8441 if (!ioa_cfg->vpd_cbs)
8442 goto out_free_res_entries;
8443
8444 if (ipr_alloc_cmd_blks(ioa_cfg))
8445 goto out_free_vpd_cbs;
8446
8447 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
8448 sizeof(u32) * IPR_NUM_CMD_BLKS,
8449 &ioa_cfg->host_rrq_dma);
8450
8451 if (!ioa_cfg->host_rrq)
8452 goto out_ipr_free_cmd_blocks;
8453
8454 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
8455 ioa_cfg->cfg_table_size,
8456 &ioa_cfg->cfg_table_dma);
8457
8458 if (!ioa_cfg->u.cfg_table)
8459 goto out_free_host_rrq;
8460
8461 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8462 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
8463 sizeof(struct ipr_hostrcb),
8464 &ioa_cfg->hostrcb_dma[i]);
8465
8466 if (!ioa_cfg->hostrcb[i])
8467 goto out_free_hostrcb_dma;
8468
8469 ioa_cfg->hostrcb[i]->hostrcb_dma =
8470 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
8471 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
8472 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
8473 }
8474
8475 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
8476 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
8477
8478 if (!ioa_cfg->trace)
8479 goto out_free_hostrcb_dma;
8480
8481 rc = 0;
8482 out:
8483 LEAVE;
8484 return rc;
8485
8486 out_free_hostrcb_dma:
8487 while (i-- > 0) {
8488 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
8489 ioa_cfg->hostrcb[i],
8490 ioa_cfg->hostrcb_dma[i]);
8491 }
8492 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
8493 ioa_cfg->u.cfg_table,
8494 ioa_cfg->cfg_table_dma);
8495 out_free_host_rrq:
8496 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8497 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8498 out_ipr_free_cmd_blocks:
8499 ipr_free_cmd_blks(ioa_cfg);
8500 out_free_vpd_cbs:
8501 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
8502 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8503 out_free_res_entries:
8504 kfree(ioa_cfg->res_entries);
8505 goto out;
8506 }
8507
8508 /**
8509 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
8510 * @ioa_cfg: ioa config struct
8511 *
8512 * Return value:
8513 * none
8514 **/
8515 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
8516 {
8517 int i;
8518
8519 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
8520 ioa_cfg->bus_attr[i].bus = i;
8521 ioa_cfg->bus_attr[i].qas_enabled = 0;
8522 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
8523 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
8524 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
8525 else
8526 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
8527 }
8528 }
8529
8530 /**
8531 * ipr_init_ioa_cfg - Initialize IOA config struct
8532 * @ioa_cfg: ioa config struct
8533 * @host: scsi host struct
8534 * @pdev: PCI dev struct
8535 *
8536 * Return value:
8537 * none
8538 **/
8539 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
8540 struct Scsi_Host *host, struct pci_dev *pdev)
8541 {
8542 const struct ipr_interrupt_offsets *p;
8543 struct ipr_interrupts *t;
8544 void __iomem *base;
8545
8546 ioa_cfg->host = host;
8547 ioa_cfg->pdev = pdev;
8548 ioa_cfg->log_level = ipr_log_level;
8549 ioa_cfg->doorbell = IPR_DOORBELL;
8550 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
8551 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
8552 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
8553 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
8554 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
8555 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
8556 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
8557 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
8558
8559 INIT_LIST_HEAD(&ioa_cfg->free_q);
8560 INIT_LIST_HEAD(&ioa_cfg->pending_q);
8561 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
8562 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
8563 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
8564 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
8565 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
8566 init_waitqueue_head(&ioa_cfg->reset_wait_q);
8567 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8568 ioa_cfg->sdt_state = INACTIVE;
8569
8570 ipr_initialize_bus_attr(ioa_cfg);
8571 ioa_cfg->max_devs_supported = ipr_max_devs;
8572
8573 if (ioa_cfg->sis64) {
8574 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
8575 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
8576 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
8577 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
8578 } else {
8579 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
8580 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
8581 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
8582 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
8583 }
8584 host->max_channel = IPR_MAX_BUS_TO_SCAN;
8585 host->unique_id = host->host_no;
8586 host->max_cmd_len = IPR_MAX_CDB_LEN;
8587 pci_set_drvdata(pdev, ioa_cfg);
8588
8589 p = &ioa_cfg->chip_cfg->regs;
8590 t = &ioa_cfg->regs;
8591 base = ioa_cfg->hdw_dma_regs;
8592
8593 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
8594 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
8595 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
8596 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
8597 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
8598 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
8599 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
8600 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
8601 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
8602 t->ioarrin_reg = base + p->ioarrin_reg;
8603 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
8604 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
8605 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
8606 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
8607 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
8608 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
8609
8610 if (ioa_cfg->sis64) {
8611 t->init_feedback_reg = base + p->init_feedback_reg;
8612 t->dump_addr_reg = base + p->dump_addr_reg;
8613 t->dump_data_reg = base + p->dump_data_reg;
8614 t->endian_swap_reg = base + p->endian_swap_reg;
8615 }
8616 }
8617
8618 /**
8619 * ipr_get_chip_info - Find adapter chip information
8620 * @dev_id: PCI device id struct
8621 *
8622 * Return value:
8623 * ptr to chip information on success / NULL on failure
8624 **/
8625 static const struct ipr_chip_t * __devinit
8626 ipr_get_chip_info(const struct pci_device_id *dev_id)
8627 {
8628 int i;
8629
8630 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
8631 if (ipr_chip[i].vendor == dev_id->vendor &&
8632 ipr_chip[i].device == dev_id->device)
8633 return &ipr_chip[i];
8634 return NULL;
8635 }
8636
8637 /**
8638 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
8639 * @pdev: PCI device struct
8640 *
8641 * Description: Simply set the msi_received flag to 1 indicating that
8642 * Message Signaled Interrupts are supported.
8643 *
8644 * Return value:
8645 * 0 on success / non-zero on failure
8646 **/
8647 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
8648 {
8649 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
8650 unsigned long lock_flags = 0;
8651 irqreturn_t rc = IRQ_HANDLED;
8652
8653 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8654
8655 ioa_cfg->msi_received = 1;
8656 wake_up(&ioa_cfg->msi_wait_q);
8657
8658 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8659 return rc;
8660 }
8661
8662 /**
8663 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
8664 * @pdev: PCI device struct
8665 *
8666 * Description: The return value from pci_enable_msi() can not always be
8667 * trusted. This routine sets up and initiates a test interrupt to determine
8668 * if the interrupt is received via the ipr_test_intr() service routine.
8669 * If the tests fails, the driver will fall back to LSI.
8670 *
8671 * Return value:
8672 * 0 on success / non-zero on failure
8673 **/
8674 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
8675 struct pci_dev *pdev)
8676 {
8677 int rc;
8678 volatile u32 int_reg;
8679 unsigned long lock_flags = 0;
8680
8681 ENTER;
8682
8683 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8684 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8685 ioa_cfg->msi_received = 0;
8686 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8687 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
8688 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8689 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8690
8691 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
8692 if (rc) {
8693 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
8694 return rc;
8695 } else if (ipr_debug)
8696 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
8697
8698 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
8699 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8700 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
8701 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8702
8703 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8704 if (!ioa_cfg->msi_received) {
8705 /* MSI test failed */
8706 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
8707 rc = -EOPNOTSUPP;
8708 } else if (ipr_debug)
8709 dev_info(&pdev->dev, "MSI test succeeded.\n");
8710
8711 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8712
8713 free_irq(pdev->irq, ioa_cfg);
8714
8715 LEAVE;
8716
8717 return rc;
8718 }
8719
8720 /**
8721 * ipr_probe_ioa - Allocates memory and does first stage of initialization
8722 * @pdev: PCI device struct
8723 * @dev_id: PCI device id struct
8724 *
8725 * Return value:
8726 * 0 on success / non-zero on failure
8727 **/
8728 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
8729 const struct pci_device_id *dev_id)
8730 {
8731 struct ipr_ioa_cfg *ioa_cfg;
8732 struct Scsi_Host *host;
8733 unsigned long ipr_regs_pci;
8734 void __iomem *ipr_regs;
8735 int rc = PCIBIOS_SUCCESSFUL;
8736 volatile u32 mask, uproc, interrupts;
8737
8738 ENTER;
8739
8740 if ((rc = pci_enable_device(pdev))) {
8741 dev_err(&pdev->dev, "Cannot enable adapter\n");
8742 goto out;
8743 }
8744
8745 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
8746
8747 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
8748
8749 if (!host) {
8750 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
8751 rc = -ENOMEM;
8752 goto out_disable;
8753 }
8754
8755 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
8756 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
8757 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
8758 sata_port_info.flags, &ipr_sata_ops);
8759
8760 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
8761
8762 if (!ioa_cfg->ipr_chip) {
8763 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
8764 dev_id->vendor, dev_id->device);
8765 goto out_scsi_host_put;
8766 }
8767
8768 /* set SIS 32 or SIS 64 */
8769 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
8770 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
8771
8772 if (ipr_transop_timeout)
8773 ioa_cfg->transop_timeout = ipr_transop_timeout;
8774 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
8775 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
8776 else
8777 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
8778
8779 ioa_cfg->revid = pdev->revision;
8780
8781 ipr_regs_pci = pci_resource_start(pdev, 0);
8782
8783 rc = pci_request_regions(pdev, IPR_NAME);
8784 if (rc < 0) {
8785 dev_err(&pdev->dev,
8786 "Couldn't register memory range of registers\n");
8787 goto out_scsi_host_put;
8788 }
8789
8790 ipr_regs = pci_ioremap_bar(pdev, 0);
8791
8792 if (!ipr_regs) {
8793 dev_err(&pdev->dev,
8794 "Couldn't map memory range of registers\n");
8795 rc = -ENOMEM;
8796 goto out_release_regions;
8797 }
8798
8799 ioa_cfg->hdw_dma_regs = ipr_regs;
8800 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
8801 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
8802
8803 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
8804
8805 pci_set_master(pdev);
8806
8807 if (ioa_cfg->sis64) {
8808 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8809 if (rc < 0) {
8810 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
8811 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8812 }
8813
8814 } else
8815 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8816
8817 if (rc < 0) {
8818 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
8819 goto cleanup_nomem;
8820 }
8821
8822 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
8823 ioa_cfg->chip_cfg->cache_line_size);
8824
8825 if (rc != PCIBIOS_SUCCESSFUL) {
8826 dev_err(&pdev->dev, "Write of cache line size failed\n");
8827 rc = -EIO;
8828 goto cleanup_nomem;
8829 }
8830
8831 /* Enable MSI style interrupts if they are supported. */
8832 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
8833 rc = ipr_test_msi(ioa_cfg, pdev);
8834 if (rc == -EOPNOTSUPP)
8835 pci_disable_msi(pdev);
8836 else if (rc)
8837 goto out_msi_disable;
8838 else
8839 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
8840 } else if (ipr_debug)
8841 dev_info(&pdev->dev, "Cannot enable MSI.\n");
8842
8843 /* Save away PCI config space for use following IOA reset */
8844 rc = pci_save_state(pdev);
8845
8846 if (rc != PCIBIOS_SUCCESSFUL) {
8847 dev_err(&pdev->dev, "Failed to save PCI config space\n");
8848 rc = -EIO;
8849 goto out_msi_disable;
8850 }
8851
8852 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
8853 goto out_msi_disable;
8854
8855 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
8856 goto out_msi_disable;
8857
8858 if (ioa_cfg->sis64)
8859 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
8860 + ((sizeof(struct ipr_config_table_entry64)
8861 * ioa_cfg->max_devs_supported)));
8862 else
8863 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
8864 + ((sizeof(struct ipr_config_table_entry)
8865 * ioa_cfg->max_devs_supported)));
8866
8867 rc = ipr_alloc_mem(ioa_cfg);
8868 if (rc < 0) {
8869 dev_err(&pdev->dev,
8870 "Couldn't allocate enough memory for device driver!\n");
8871 goto out_msi_disable;
8872 }
8873
8874 /*
8875 * If HRRQ updated interrupt is not masked, or reset alert is set,
8876 * the card is in an unknown state and needs a hard reset
8877 */
8878 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
8879 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
8880 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
8881 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
8882 ioa_cfg->needs_hard_reset = 1;
8883 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
8884 ioa_cfg->needs_hard_reset = 1;
8885 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
8886 ioa_cfg->ioa_unit_checked = 1;
8887
8888 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8889 rc = request_irq(pdev->irq, ipr_isr,
8890 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
8891 IPR_NAME, ioa_cfg);
8892
8893 if (rc) {
8894 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
8895 pdev->irq, rc);
8896 goto cleanup_nolog;
8897 }
8898
8899 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
8900 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
8901 ioa_cfg->needs_warm_reset = 1;
8902 ioa_cfg->reset = ipr_reset_slot_reset;
8903 } else
8904 ioa_cfg->reset = ipr_reset_start_bist;
8905
8906 spin_lock(&ipr_driver_lock);
8907 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
8908 spin_unlock(&ipr_driver_lock);
8909
8910 LEAVE;
8911 out:
8912 return rc;
8913
8914 cleanup_nolog:
8915 ipr_free_mem(ioa_cfg);
8916 out_msi_disable:
8917 pci_disable_msi(pdev);
8918 cleanup_nomem:
8919 iounmap(ipr_regs);
8920 out_release_regions:
8921 pci_release_regions(pdev);
8922 out_scsi_host_put:
8923 scsi_host_put(host);
8924 out_disable:
8925 pci_disable_device(pdev);
8926 goto out;
8927 }
8928
8929 /**
8930 * ipr_scan_vsets - Scans for VSET devices
8931 * @ioa_cfg: ioa config struct
8932 *
8933 * Description: Since the VSET resources do not follow SAM in that we can have
8934 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
8935 *
8936 * Return value:
8937 * none
8938 **/
8939 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
8940 {
8941 int target, lun;
8942
8943 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
8944 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
8945 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
8946 }
8947
8948 /**
8949 * ipr_initiate_ioa_bringdown - Bring down an adapter
8950 * @ioa_cfg: ioa config struct
8951 * @shutdown_type: shutdown type
8952 *
8953 * Description: This function will initiate bringing down the adapter.
8954 * This consists of issuing an IOA shutdown to the adapter
8955 * to flush the cache, and running BIST.
8956 * If the caller needs to wait on the completion of the reset,
8957 * the caller must sleep on the reset_wait_q.
8958 *
8959 * Return value:
8960 * none
8961 **/
8962 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
8963 enum ipr_shutdown_type shutdown_type)
8964 {
8965 ENTER;
8966 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8967 ioa_cfg->sdt_state = ABORT_DUMP;
8968 ioa_cfg->reset_retries = 0;
8969 ioa_cfg->in_ioa_bringdown = 1;
8970 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
8971 LEAVE;
8972 }
8973
8974 /**
8975 * __ipr_remove - Remove a single adapter
8976 * @pdev: pci device struct
8977 *
8978 * Adapter hot plug remove entry point.
8979 *
8980 * Return value:
8981 * none
8982 **/
8983 static void __ipr_remove(struct pci_dev *pdev)
8984 {
8985 unsigned long host_lock_flags = 0;
8986 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8987 ENTER;
8988
8989 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8990 while(ioa_cfg->in_reset_reload) {
8991 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8992 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8993 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8994 }
8995
8996 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8997
8998 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8999 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9000 flush_work_sync(&ioa_cfg->work_q);
9001 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9002
9003 spin_lock(&ipr_driver_lock);
9004 list_del(&ioa_cfg->queue);
9005 spin_unlock(&ipr_driver_lock);
9006
9007 if (ioa_cfg->sdt_state == ABORT_DUMP)
9008 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9010
9011 ipr_free_all_resources(ioa_cfg);
9012
9013 LEAVE;
9014 }
9015
9016 /**
9017 * ipr_remove - IOA hot plug remove entry point
9018 * @pdev: pci device struct
9019 *
9020 * Adapter hot plug remove entry point.
9021 *
9022 * Return value:
9023 * none
9024 **/
9025 static void __devexit ipr_remove(struct pci_dev *pdev)
9026 {
9027 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9028
9029 ENTER;
9030
9031 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9032 &ipr_trace_attr);
9033 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
9034 &ipr_dump_attr);
9035 scsi_remove_host(ioa_cfg->host);
9036
9037 __ipr_remove(pdev);
9038
9039 LEAVE;
9040 }
9041
9042 /**
9043 * ipr_probe - Adapter hot plug add entry point
9044 *
9045 * Return value:
9046 * 0 on success / non-zero on failure
9047 **/
9048 static int __devinit ipr_probe(struct pci_dev *pdev,
9049 const struct pci_device_id *dev_id)
9050 {
9051 struct ipr_ioa_cfg *ioa_cfg;
9052 int rc;
9053
9054 rc = ipr_probe_ioa(pdev, dev_id);
9055
9056 if (rc)
9057 return rc;
9058
9059 ioa_cfg = pci_get_drvdata(pdev);
9060 rc = ipr_probe_ioa_part2(ioa_cfg);
9061
9062 if (rc) {
9063 __ipr_remove(pdev);
9064 return rc;
9065 }
9066
9067 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
9068
9069 if (rc) {
9070 __ipr_remove(pdev);
9071 return rc;
9072 }
9073
9074 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
9075 &ipr_trace_attr);
9076
9077 if (rc) {
9078 scsi_remove_host(ioa_cfg->host);
9079 __ipr_remove(pdev);
9080 return rc;
9081 }
9082
9083 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
9084 &ipr_dump_attr);
9085
9086 if (rc) {
9087 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9088 &ipr_trace_attr);
9089 scsi_remove_host(ioa_cfg->host);
9090 __ipr_remove(pdev);
9091 return rc;
9092 }
9093
9094 scsi_scan_host(ioa_cfg->host);
9095 ipr_scan_vsets(ioa_cfg);
9096 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
9097 ioa_cfg->allow_ml_add_del = 1;
9098 ioa_cfg->host->max_channel = IPR_VSET_BUS;
9099 schedule_work(&ioa_cfg->work_q);
9100 return 0;
9101 }
9102
9103 /**
9104 * ipr_shutdown - Shutdown handler.
9105 * @pdev: pci device struct
9106 *
9107 * This function is invoked upon system shutdown/reboot. It will issue
9108 * an adapter shutdown to the adapter to flush the write cache.
9109 *
9110 * Return value:
9111 * none
9112 **/
9113 static void ipr_shutdown(struct pci_dev *pdev)
9114 {
9115 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9116 unsigned long lock_flags = 0;
9117
9118 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9119 while(ioa_cfg->in_reset_reload) {
9120 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9121 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9122 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9123 }
9124
9125 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
9126 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9127 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9128 }
9129
9130 static struct pci_device_id ipr_pci_table[] __devinitdata = {
9131 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9132 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
9133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9134 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
9135 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9136 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
9137 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9138 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
9139 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9140 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
9141 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9142 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
9143 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9144 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
9145 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9146 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
9147 IPR_USE_LONG_TRANSOP_TIMEOUT },
9148 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9149 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9150 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9151 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9152 IPR_USE_LONG_TRANSOP_TIMEOUT },
9153 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9154 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9155 IPR_USE_LONG_TRANSOP_TIMEOUT },
9156 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9157 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9158 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9159 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9160 IPR_USE_LONG_TRANSOP_TIMEOUT},
9161 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9162 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9163 IPR_USE_LONG_TRANSOP_TIMEOUT },
9164 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9165 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
9166 IPR_USE_LONG_TRANSOP_TIMEOUT },
9167 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9168 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
9169 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9170 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
9171 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9172 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
9173 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
9174 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
9175 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
9176 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9177 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
9178 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9179 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
9180 IPR_USE_LONG_TRANSOP_TIMEOUT },
9181 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9182 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
9183 IPR_USE_LONG_TRANSOP_TIMEOUT },
9184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9185 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
9186 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9187 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
9188 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9189 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
9190 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9191 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
9192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9193 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
9194 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9195 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
9196 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9197 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
9198 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9199 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
9200 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9201 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 },
9202 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9203 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
9204 { }
9205 };
9206 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
9207
9208 static struct pci_error_handlers ipr_err_handler = {
9209 .error_detected = ipr_pci_error_detected,
9210 .slot_reset = ipr_pci_slot_reset,
9211 };
9212
9213 static struct pci_driver ipr_driver = {
9214 .name = IPR_NAME,
9215 .id_table = ipr_pci_table,
9216 .probe = ipr_probe,
9217 .remove = __devexit_p(ipr_remove),
9218 .shutdown = ipr_shutdown,
9219 .err_handler = &ipr_err_handler,
9220 };
9221
9222 /**
9223 * ipr_halt_done - Shutdown prepare completion
9224 *
9225 * Return value:
9226 * none
9227 **/
9228 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9229 {
9230 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9231
9232 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
9233 }
9234
9235 /**
9236 * ipr_halt - Issue shutdown prepare to all adapters
9237 *
9238 * Return value:
9239 * NOTIFY_OK on success / NOTIFY_DONE on failure
9240 **/
9241 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9242 {
9243 struct ipr_cmnd *ipr_cmd;
9244 struct ipr_ioa_cfg *ioa_cfg;
9245 unsigned long flags = 0;
9246
9247 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
9248 return NOTIFY_DONE;
9249
9250 spin_lock(&ipr_driver_lock);
9251
9252 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
9253 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9254 if (!ioa_cfg->allow_cmds) {
9255 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9256 continue;
9257 }
9258
9259 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9260 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9261 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9262 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9263 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
9264
9265 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
9266 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9267 }
9268 spin_unlock(&ipr_driver_lock);
9269
9270 return NOTIFY_OK;
9271 }
9272
9273 static struct notifier_block ipr_notifier = {
9274 ipr_halt, NULL, 0
9275 };
9276
9277 /**
9278 * ipr_init - Module entry point
9279 *
9280 * Return value:
9281 * 0 on success / negative value on failure
9282 **/
9283 static int __init ipr_init(void)
9284 {
9285 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
9286 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
9287
9288 register_reboot_notifier(&ipr_notifier);
9289 return pci_register_driver(&ipr_driver);
9290 }
9291
9292 /**
9293 * ipr_exit - Module unload
9294 *
9295 * Module unload entry point.
9296 *
9297 * Return value:
9298 * none
9299 **/
9300 static void __exit ipr_exit(void)
9301 {
9302 unregister_reboot_notifier(&ipr_notifier);
9303 pci_unregister_driver(&ipr_driver);
9304 }
9305
9306 module_init(ipr_init);
9307 module_exit(ipr_exit);