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