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Merge tag 'stable/for-linus-3.4-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel...
[deliverable/linux.git] / drivers / scsi / ipr.c
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/vmalloc.h>
64 #include <linux/ioport.h>
65 #include <linux/delay.h>
66 #include <linux/pci.h>
67 #include <linux/wait.h>
68 #include <linux/spinlock.h>
69 #include <linux/sched.h>
70 #include <linux/interrupt.h>
71 #include <linux/blkdev.h>
72 #include <linux/firmware.h>
73 #include <linux/module.h>
74 #include <linux/moduleparam.h>
75 #include <linux/libata.h>
76 #include <linux/hdreg.h>
77 #include <linux/reboot.h>
78 #include <linux/stringify.h>
79 #include <asm/io.h>
80 #include <asm/irq.h>
81 #include <asm/processor.h>
82 #include <scsi/scsi.h>
83 #include <scsi/scsi_host.h>
84 #include <scsi/scsi_tcq.h>
85 #include <scsi/scsi_eh.h>
86 #include <scsi/scsi_cmnd.h>
87 #include "ipr.h"
88
89 /*
90 * Global Data
91 */
92 static LIST_HEAD(ipr_ioa_head);
93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
94 static unsigned int ipr_max_speed = 1;
95 static int ipr_testmode = 0;
96 static unsigned int ipr_fastfail = 0;
97 static unsigned int ipr_transop_timeout = 0;
98 static unsigned int ipr_debug = 0;
99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
100 static unsigned int ipr_dual_ioa_raid = 1;
101 static DEFINE_SPINLOCK(ipr_driver_lock);
102
103 /* This table describes the differences between DMA controller chips */
104 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
105 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
106 .mailbox = 0x0042C,
107 .max_cmds = 100,
108 .cache_line_size = 0x20,
109 .clear_isr = 1,
110 {
111 .set_interrupt_mask_reg = 0x0022C,
112 .clr_interrupt_mask_reg = 0x00230,
113 .clr_interrupt_mask_reg32 = 0x00230,
114 .sense_interrupt_mask_reg = 0x0022C,
115 .sense_interrupt_mask_reg32 = 0x0022C,
116 .clr_interrupt_reg = 0x00228,
117 .clr_interrupt_reg32 = 0x00228,
118 .sense_interrupt_reg = 0x00224,
119 .sense_interrupt_reg32 = 0x00224,
120 .ioarrin_reg = 0x00404,
121 .sense_uproc_interrupt_reg = 0x00214,
122 .sense_uproc_interrupt_reg32 = 0x00214,
123 .set_uproc_interrupt_reg = 0x00214,
124 .set_uproc_interrupt_reg32 = 0x00214,
125 .clr_uproc_interrupt_reg = 0x00218,
126 .clr_uproc_interrupt_reg32 = 0x00218
127 }
128 },
129 { /* Snipe and Scamp */
130 .mailbox = 0x0052C,
131 .max_cmds = 100,
132 .cache_line_size = 0x20,
133 .clear_isr = 1,
134 {
135 .set_interrupt_mask_reg = 0x00288,
136 .clr_interrupt_mask_reg = 0x0028C,
137 .clr_interrupt_mask_reg32 = 0x0028C,
138 .sense_interrupt_mask_reg = 0x00288,
139 .sense_interrupt_mask_reg32 = 0x00288,
140 .clr_interrupt_reg = 0x00284,
141 .clr_interrupt_reg32 = 0x00284,
142 .sense_interrupt_reg = 0x00280,
143 .sense_interrupt_reg32 = 0x00280,
144 .ioarrin_reg = 0x00504,
145 .sense_uproc_interrupt_reg = 0x00290,
146 .sense_uproc_interrupt_reg32 = 0x00290,
147 .set_uproc_interrupt_reg = 0x00290,
148 .set_uproc_interrupt_reg32 = 0x00290,
149 .clr_uproc_interrupt_reg = 0x00294,
150 .clr_uproc_interrupt_reg32 = 0x00294
151 }
152 },
153 { /* CRoC */
154 .mailbox = 0x00044,
155 .max_cmds = 1000,
156 .cache_line_size = 0x20,
157 .clear_isr = 0,
158 {
159 .set_interrupt_mask_reg = 0x00010,
160 .clr_interrupt_mask_reg = 0x00018,
161 .clr_interrupt_mask_reg32 = 0x0001C,
162 .sense_interrupt_mask_reg = 0x00010,
163 .sense_interrupt_mask_reg32 = 0x00014,
164 .clr_interrupt_reg = 0x00008,
165 .clr_interrupt_reg32 = 0x0000C,
166 .sense_interrupt_reg = 0x00000,
167 .sense_interrupt_reg32 = 0x00004,
168 .ioarrin_reg = 0x00070,
169 .sense_uproc_interrupt_reg = 0x00020,
170 .sense_uproc_interrupt_reg32 = 0x00024,
171 .set_uproc_interrupt_reg = 0x00020,
172 .set_uproc_interrupt_reg32 = 0x00024,
173 .clr_uproc_interrupt_reg = 0x00028,
174 .clr_uproc_interrupt_reg32 = 0x0002C,
175 .init_feedback_reg = 0x0005C,
176 .dump_addr_reg = 0x00064,
177 .dump_data_reg = 0x00068,
178 .endian_swap_reg = 0x00084
179 }
180 },
181 };
182
183 static const struct ipr_chip_t ipr_chip[] = {
184 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
186 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
187 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
188 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
189 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
190 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
191 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
193 };
194
195 static int ipr_max_bus_speeds [] = {
196 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
197 };
198
199 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
200 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
201 module_param_named(max_speed, ipr_max_speed, uint, 0);
202 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
203 module_param_named(log_level, ipr_log_level, uint, 0);
204 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
205 module_param_named(testmode, ipr_testmode, int, 0);
206 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
207 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
208 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
209 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
210 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
211 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
212 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
213 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
214 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
215 module_param_named(max_devs, ipr_max_devs, int, 0);
216 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
217 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
218 MODULE_LICENSE("GPL");
219 MODULE_VERSION(IPR_DRIVER_VERSION);
220
221 /* A constant array of IOASCs/URCs/Error Messages */
222 static const
223 struct ipr_error_table_t ipr_error_table[] = {
224 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
225 "8155: An unknown error was received"},
226 {0x00330000, 0, 0,
227 "Soft underlength error"},
228 {0x005A0000, 0, 0,
229 "Command to be cancelled not found"},
230 {0x00808000, 0, 0,
231 "Qualified success"},
232 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
233 "FFFE: Soft device bus error recovered by the IOA"},
234 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
235 "4101: Soft device bus fabric error"},
236 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
237 "FFFC: Logical block guard error recovered by the device"},
238 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
239 "FFFC: Logical block reference tag error recovered by the device"},
240 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
241 "4171: Recovered scatter list tag / sequence number error"},
242 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
243 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
244 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
245 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
246 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
247 "FFFD: Recovered logical block reference tag error detected by the IOA"},
248 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
249 "FFFD: Logical block guard error recovered by the IOA"},
250 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
251 "FFF9: Device sector reassign successful"},
252 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FFF7: Media error recovered by device rewrite procedures"},
254 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
255 "7001: IOA sector reassignment successful"},
256 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
257 "FFF9: Soft media error. Sector reassignment recommended"},
258 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
259 "FFF7: Media error recovered by IOA rewrite procedures"},
260 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
261 "FF3D: Soft PCI bus error recovered by the IOA"},
262 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
263 "FFF6: Device hardware error recovered by the IOA"},
264 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
265 "FFF6: Device hardware error recovered by the device"},
266 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
267 "FF3D: Soft IOA error recovered by the IOA"},
268 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
269 "FFFA: Undefined device response recovered by the IOA"},
270 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
271 "FFF6: Device bus error, message or command phase"},
272 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
273 "FFFE: Task Management Function failed"},
274 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
275 "FFF6: Failure prediction threshold exceeded"},
276 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
277 "8009: Impending cache battery pack failure"},
278 {0x02040400, 0, 0,
279 "34FF: Disk device format in progress"},
280 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
281 "9070: IOA requested reset"},
282 {0x023F0000, 0, 0,
283 "Synchronization required"},
284 {0x024E0000, 0, 0,
285 "No ready, IOA shutdown"},
286 {0x025A0000, 0, 0,
287 "Not ready, IOA has been shutdown"},
288 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
289 "3020: Storage subsystem configuration error"},
290 {0x03110B00, 0, 0,
291 "FFF5: Medium error, data unreadable, recommend reassign"},
292 {0x03110C00, 0, 0,
293 "7000: Medium error, data unreadable, do not reassign"},
294 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
295 "FFF3: Disk media format bad"},
296 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
297 "3002: Addressed device failed to respond to selection"},
298 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
299 "3100: Device bus error"},
300 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
301 "3109: IOA timed out a device command"},
302 {0x04088000, 0, 0,
303 "3120: SCSI bus is not operational"},
304 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
305 "4100: Hard device bus fabric error"},
306 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
307 "310C: Logical block guard error detected by the device"},
308 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
309 "310C: Logical block reference tag error detected by the device"},
310 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
311 "4170: Scatter list tag / sequence number error"},
312 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
313 "8150: Logical block CRC error on IOA to Host transfer"},
314 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
315 "4170: Logical block sequence number error on IOA to Host transfer"},
316 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
317 "310D: Logical block reference tag error detected by the IOA"},
318 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
319 "310D: Logical block guard error detected by the IOA"},
320 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
321 "9000: IOA reserved area data check"},
322 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
323 "9001: IOA reserved area invalid data pattern"},
324 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
325 "9002: IOA reserved area LRC error"},
326 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
327 "Hardware Error, IOA metadata access error"},
328 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
329 "102E: Out of alternate sectors for disk storage"},
330 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
331 "FFF4: Data transfer underlength error"},
332 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
333 "FFF4: Data transfer overlength error"},
334 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
335 "3400: Logical unit failure"},
336 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
337 "FFF4: Device microcode is corrupt"},
338 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
339 "8150: PCI bus error"},
340 {0x04430000, 1, 0,
341 "Unsupported device bus message received"},
342 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
343 "FFF4: Disk device problem"},
344 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
345 "8150: Permanent IOA failure"},
346 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
347 "3010: Disk device returned wrong response to IOA"},
348 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
349 "8151: IOA microcode error"},
350 {0x04448500, 0, 0,
351 "Device bus status error"},
352 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
353 "8157: IOA error requiring IOA reset to recover"},
354 {0x04448700, 0, 0,
355 "ATA device status error"},
356 {0x04490000, 0, 0,
357 "Message reject received from the device"},
358 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
359 "8008: A permanent cache battery pack failure occurred"},
360 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
361 "9090: Disk unit has been modified after the last known status"},
362 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
363 "9081: IOA detected device error"},
364 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
365 "9082: IOA detected device error"},
366 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
367 "3110: Device bus error, message or command phase"},
368 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
369 "3110: SAS Command / Task Management Function failed"},
370 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
371 "9091: Incorrect hardware configuration change has been detected"},
372 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
373 "9073: Invalid multi-adapter configuration"},
374 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
375 "4010: Incorrect connection between cascaded expanders"},
376 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
377 "4020: Connections exceed IOA design limits"},
378 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
379 "4030: Incorrect multipath connection"},
380 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
381 "4110: Unsupported enclosure function"},
382 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
383 "FFF4: Command to logical unit failed"},
384 {0x05240000, 1, 0,
385 "Illegal request, invalid request type or request packet"},
386 {0x05250000, 0, 0,
387 "Illegal request, invalid resource handle"},
388 {0x05258000, 0, 0,
389 "Illegal request, commands not allowed to this device"},
390 {0x05258100, 0, 0,
391 "Illegal request, command not allowed to a secondary adapter"},
392 {0x05258200, 0, 0,
393 "Illegal request, command not allowed to a non-optimized resource"},
394 {0x05260000, 0, 0,
395 "Illegal request, invalid field in parameter list"},
396 {0x05260100, 0, 0,
397 "Illegal request, parameter not supported"},
398 {0x05260200, 0, 0,
399 "Illegal request, parameter value invalid"},
400 {0x052C0000, 0, 0,
401 "Illegal request, command sequence error"},
402 {0x052C8000, 1, 0,
403 "Illegal request, dual adapter support not enabled"},
404 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
405 "9031: Array protection temporarily suspended, protection resuming"},
406 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
407 "9040: Array protection temporarily suspended, protection resuming"},
408 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
409 "3140: Device bus not ready to ready transition"},
410 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
411 "FFFB: SCSI bus was reset"},
412 {0x06290500, 0, 0,
413 "FFFE: SCSI bus transition to single ended"},
414 {0x06290600, 0, 0,
415 "FFFE: SCSI bus transition to LVD"},
416 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
417 "FFFB: SCSI bus was reset by another initiator"},
418 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
419 "3029: A device replacement has occurred"},
420 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
421 "9051: IOA cache data exists for a missing or failed device"},
422 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
423 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
424 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
425 "9025: Disk unit is not supported at its physical location"},
426 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
427 "3020: IOA detected a SCSI bus configuration error"},
428 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
429 "3150: SCSI bus configuration error"},
430 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
431 "9074: Asymmetric advanced function disk configuration"},
432 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
433 "4040: Incomplete multipath connection between IOA and enclosure"},
434 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
435 "4041: Incomplete multipath connection between enclosure and device"},
436 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
437 "9075: Incomplete multipath connection between IOA and remote IOA"},
438 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
439 "9076: Configuration error, missing remote IOA"},
440 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
441 "4050: Enclosure does not support a required multipath function"},
442 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
443 "4070: Logically bad block written on device"},
444 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
445 "9041: Array protection temporarily suspended"},
446 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
447 "9042: Corrupt array parity detected on specified device"},
448 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
449 "9030: Array no longer protected due to missing or failed disk unit"},
450 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
451 "9071: Link operational transition"},
452 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
453 "9072: Link not operational transition"},
454 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
455 "9032: Array exposed but still protected"},
456 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
457 "70DD: Device forced failed by disrupt device command"},
458 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
459 "4061: Multipath redundancy level got better"},
460 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
461 "4060: Multipath redundancy level got worse"},
462 {0x07270000, 0, 0,
463 "Failure due to other device"},
464 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
465 "9008: IOA does not support functions expected by devices"},
466 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
467 "9010: Cache data associated with attached devices cannot be found"},
468 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
469 "9011: Cache data belongs to devices other than those attached"},
470 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
471 "9020: Array missing 2 or more devices with only 1 device present"},
472 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
473 "9021: Array missing 2 or more devices with 2 or more devices present"},
474 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
475 "9022: Exposed array is missing a required device"},
476 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
477 "9023: Array member(s) not at required physical locations"},
478 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
479 "9024: Array not functional due to present hardware configuration"},
480 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
481 "9026: Array not functional due to present hardware configuration"},
482 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
483 "9027: Array is missing a device and parity is out of sync"},
484 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
485 "9028: Maximum number of arrays already exist"},
486 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
487 "9050: Required cache data cannot be located for a disk unit"},
488 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
489 "9052: Cache data exists for a device that has been modified"},
490 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
491 "9054: IOA resources not available due to previous problems"},
492 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
493 "9092: Disk unit requires initialization before use"},
494 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
495 "9029: Incorrect hardware configuration change has been detected"},
496 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
497 "9060: One or more disk pairs are missing from an array"},
498 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
499 "9061: One or more disks are missing from an array"},
500 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
501 "9062: One or more disks are missing from an array"},
502 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
503 "9063: Maximum number of functional arrays has been exceeded"},
504 {0x0B260000, 0, 0,
505 "Aborted command, invalid descriptor"},
506 {0x0B5A0000, 0, 0,
507 "Command terminated by host"}
508 };
509
510 static const struct ipr_ses_table_entry ipr_ses_table[] = {
511 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
512 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
513 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
514 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
515 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
516 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
517 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
518 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
519 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
520 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
521 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
522 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
523 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
524 };
525
526 /*
527 * Function Prototypes
528 */
529 static int ipr_reset_alert(struct ipr_cmnd *);
530 static void ipr_process_ccn(struct ipr_cmnd *);
531 static void ipr_process_error(struct ipr_cmnd *);
532 static void ipr_reset_ioa_job(struct ipr_cmnd *);
533 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
534 enum ipr_shutdown_type);
535
536 #ifdef CONFIG_SCSI_IPR_TRACE
537 /**
538 * ipr_trc_hook - Add a trace entry to the driver trace
539 * @ipr_cmd: ipr command struct
540 * @type: trace type
541 * @add_data: additional data
542 *
543 * Return value:
544 * none
545 **/
546 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
547 u8 type, u32 add_data)
548 {
549 struct ipr_trace_entry *trace_entry;
550 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
551
552 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
553 trace_entry->time = jiffies;
554 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
555 trace_entry->type = type;
556 if (ipr_cmd->ioa_cfg->sis64)
557 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
558 else
559 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
560 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
561 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
562 trace_entry->u.add_data = add_data;
563 }
564 #else
565 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
566 #endif
567
568 /**
569 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
570 * @ipr_cmd: ipr command struct
571 *
572 * Return value:
573 * none
574 **/
575 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
576 {
577 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
578 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
579 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
580 dma_addr_t dma_addr = ipr_cmd->dma_addr;
581
582 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
583 ioarcb->data_transfer_length = 0;
584 ioarcb->read_data_transfer_length = 0;
585 ioarcb->ioadl_len = 0;
586 ioarcb->read_ioadl_len = 0;
587
588 if (ipr_cmd->ioa_cfg->sis64) {
589 ioarcb->u.sis64_addr_data.data_ioadl_addr =
590 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
591 ioasa64->u.gata.status = 0;
592 } else {
593 ioarcb->write_ioadl_addr =
594 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
595 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
596 ioasa->u.gata.status = 0;
597 }
598
599 ioasa->hdr.ioasc = 0;
600 ioasa->hdr.residual_data_len = 0;
601 ipr_cmd->scsi_cmd = NULL;
602 ipr_cmd->qc = NULL;
603 ipr_cmd->sense_buffer[0] = 0;
604 ipr_cmd->dma_use_sg = 0;
605 }
606
607 /**
608 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
609 * @ipr_cmd: ipr command struct
610 *
611 * Return value:
612 * none
613 **/
614 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
615 {
616 ipr_reinit_ipr_cmnd(ipr_cmd);
617 ipr_cmd->u.scratch = 0;
618 ipr_cmd->sibling = NULL;
619 init_timer(&ipr_cmd->timer);
620 }
621
622 /**
623 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
624 * @ioa_cfg: ioa config struct
625 *
626 * Return value:
627 * pointer to ipr command struct
628 **/
629 static
630 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
631 {
632 struct ipr_cmnd *ipr_cmd;
633
634 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
635 list_del(&ipr_cmd->queue);
636 ipr_init_ipr_cmnd(ipr_cmd);
637
638 return ipr_cmd;
639 }
640
641 /**
642 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
643 * @ioa_cfg: ioa config struct
644 * @clr_ints: interrupts to clear
645 *
646 * This function masks all interrupts on the adapter, then clears the
647 * interrupts specified in the mask
648 *
649 * Return value:
650 * none
651 **/
652 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
653 u32 clr_ints)
654 {
655 volatile u32 int_reg;
656
657 /* Stop new interrupts */
658 ioa_cfg->allow_interrupts = 0;
659
660 /* Set interrupt mask to stop all new interrupts */
661 if (ioa_cfg->sis64)
662 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
663 else
664 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
665
666 /* Clear any pending interrupts */
667 if (ioa_cfg->sis64)
668 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
669 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
670 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
671 }
672
673 /**
674 * ipr_save_pcix_cmd_reg - Save PCI-X command register
675 * @ioa_cfg: ioa config struct
676 *
677 * Return value:
678 * 0 on success / -EIO on failure
679 **/
680 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
681 {
682 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
683
684 if (pcix_cmd_reg == 0)
685 return 0;
686
687 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
688 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
689 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
690 return -EIO;
691 }
692
693 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
694 return 0;
695 }
696
697 /**
698 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
699 * @ioa_cfg: ioa config struct
700 *
701 * Return value:
702 * 0 on success / -EIO on failure
703 **/
704 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
705 {
706 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
707
708 if (pcix_cmd_reg) {
709 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
710 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
711 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
712 return -EIO;
713 }
714 }
715
716 return 0;
717 }
718
719 /**
720 * ipr_sata_eh_done - done function for aborted SATA commands
721 * @ipr_cmd: ipr command struct
722 *
723 * This function is invoked for ops generated to SATA
724 * devices which are being aborted.
725 *
726 * Return value:
727 * none
728 **/
729 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
730 {
731 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
732 struct ata_queued_cmd *qc = ipr_cmd->qc;
733 struct ipr_sata_port *sata_port = qc->ap->private_data;
734
735 qc->err_mask |= AC_ERR_OTHER;
736 sata_port->ioasa.status |= ATA_BUSY;
737 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
738 ata_qc_complete(qc);
739 }
740
741 /**
742 * ipr_scsi_eh_done - mid-layer done function for aborted ops
743 * @ipr_cmd: ipr command struct
744 *
745 * This function is invoked by the interrupt handler for
746 * ops generated by the SCSI mid-layer which are being aborted.
747 *
748 * Return value:
749 * none
750 **/
751 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
752 {
753 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
754 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
755
756 scsi_cmd->result |= (DID_ERROR << 16);
757
758 scsi_dma_unmap(ipr_cmd->scsi_cmd);
759 scsi_cmd->scsi_done(scsi_cmd);
760 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
761 }
762
763 /**
764 * ipr_fail_all_ops - Fails all outstanding ops.
765 * @ioa_cfg: ioa config struct
766 *
767 * This function fails all outstanding ops.
768 *
769 * Return value:
770 * none
771 **/
772 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
773 {
774 struct ipr_cmnd *ipr_cmd, *temp;
775
776 ENTER;
777 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
778 list_del(&ipr_cmd->queue);
779
780 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
781 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
782
783 if (ipr_cmd->scsi_cmd)
784 ipr_cmd->done = ipr_scsi_eh_done;
785 else if (ipr_cmd->qc)
786 ipr_cmd->done = ipr_sata_eh_done;
787
788 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
789 del_timer(&ipr_cmd->timer);
790 ipr_cmd->done(ipr_cmd);
791 }
792
793 LEAVE;
794 }
795
796 /**
797 * ipr_send_command - Send driver initiated requests.
798 * @ipr_cmd: ipr command struct
799 *
800 * This function sends a command to the adapter using the correct write call.
801 * In the case of sis64, calculate the ioarcb size required. Then or in the
802 * appropriate bits.
803 *
804 * Return value:
805 * none
806 **/
807 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
808 {
809 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
810 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
811
812 if (ioa_cfg->sis64) {
813 /* The default size is 256 bytes */
814 send_dma_addr |= 0x1;
815
816 /* If the number of ioadls * size of ioadl > 128 bytes,
817 then use a 512 byte ioarcb */
818 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
819 send_dma_addr |= 0x4;
820 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
821 } else
822 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
823 }
824
825 /**
826 * ipr_do_req - Send driver initiated requests.
827 * @ipr_cmd: ipr command struct
828 * @done: done function
829 * @timeout_func: timeout function
830 * @timeout: timeout value
831 *
832 * This function sends the specified command to the adapter with the
833 * timeout given. The done function is invoked on command completion.
834 *
835 * Return value:
836 * none
837 **/
838 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
839 void (*done) (struct ipr_cmnd *),
840 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
841 {
842 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
843
844 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
845
846 ipr_cmd->done = done;
847
848 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
849 ipr_cmd->timer.expires = jiffies + timeout;
850 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
851
852 add_timer(&ipr_cmd->timer);
853
854 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
855
856 ipr_send_command(ipr_cmd);
857 }
858
859 /**
860 * ipr_internal_cmd_done - Op done function for an internally generated op.
861 * @ipr_cmd: ipr command struct
862 *
863 * This function is the op done function for an internally generated,
864 * blocking op. It simply wakes the sleeping thread.
865 *
866 * Return value:
867 * none
868 **/
869 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
870 {
871 if (ipr_cmd->sibling)
872 ipr_cmd->sibling = NULL;
873 else
874 complete(&ipr_cmd->completion);
875 }
876
877 /**
878 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
879 * @ipr_cmd: ipr command struct
880 * @dma_addr: dma address
881 * @len: transfer length
882 * @flags: ioadl flag value
883 *
884 * This function initializes an ioadl in the case where there is only a single
885 * descriptor.
886 *
887 * Return value:
888 * nothing
889 **/
890 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
891 u32 len, int flags)
892 {
893 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
894 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
895
896 ipr_cmd->dma_use_sg = 1;
897
898 if (ipr_cmd->ioa_cfg->sis64) {
899 ioadl64->flags = cpu_to_be32(flags);
900 ioadl64->data_len = cpu_to_be32(len);
901 ioadl64->address = cpu_to_be64(dma_addr);
902
903 ipr_cmd->ioarcb.ioadl_len =
904 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
905 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
906 } else {
907 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
908 ioadl->address = cpu_to_be32(dma_addr);
909
910 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
911 ipr_cmd->ioarcb.read_ioadl_len =
912 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
913 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
914 } else {
915 ipr_cmd->ioarcb.ioadl_len =
916 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
917 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
918 }
919 }
920 }
921
922 /**
923 * ipr_send_blocking_cmd - Send command and sleep on its completion.
924 * @ipr_cmd: ipr command struct
925 * @timeout_func: function to invoke if command times out
926 * @timeout: timeout
927 *
928 * Return value:
929 * none
930 **/
931 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
932 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
933 u32 timeout)
934 {
935 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
936
937 init_completion(&ipr_cmd->completion);
938 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
939
940 spin_unlock_irq(ioa_cfg->host->host_lock);
941 wait_for_completion(&ipr_cmd->completion);
942 spin_lock_irq(ioa_cfg->host->host_lock);
943 }
944
945 /**
946 * ipr_send_hcam - Send an HCAM to the adapter.
947 * @ioa_cfg: ioa config struct
948 * @type: HCAM type
949 * @hostrcb: hostrcb struct
950 *
951 * This function will send a Host Controlled Async command to the adapter.
952 * If HCAMs are currently not allowed to be issued to the adapter, it will
953 * place the hostrcb on the free queue.
954 *
955 * Return value:
956 * none
957 **/
958 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
959 struct ipr_hostrcb *hostrcb)
960 {
961 struct ipr_cmnd *ipr_cmd;
962 struct ipr_ioarcb *ioarcb;
963
964 if (ioa_cfg->allow_cmds) {
965 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
966 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
967 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
968
969 ipr_cmd->u.hostrcb = hostrcb;
970 ioarcb = &ipr_cmd->ioarcb;
971
972 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
973 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
974 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
975 ioarcb->cmd_pkt.cdb[1] = type;
976 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
977 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
978
979 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
980 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
981
982 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
983 ipr_cmd->done = ipr_process_ccn;
984 else
985 ipr_cmd->done = ipr_process_error;
986
987 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
988
989 ipr_send_command(ipr_cmd);
990 } else {
991 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
992 }
993 }
994
995 /**
996 * ipr_update_ata_class - Update the ata class in the resource entry
997 * @res: resource entry struct
998 * @proto: cfgte device bus protocol value
999 *
1000 * Return value:
1001 * none
1002 **/
1003 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1004 {
1005 switch(proto) {
1006 case IPR_PROTO_SATA:
1007 case IPR_PROTO_SAS_STP:
1008 res->ata_class = ATA_DEV_ATA;
1009 break;
1010 case IPR_PROTO_SATA_ATAPI:
1011 case IPR_PROTO_SAS_STP_ATAPI:
1012 res->ata_class = ATA_DEV_ATAPI;
1013 break;
1014 default:
1015 res->ata_class = ATA_DEV_UNKNOWN;
1016 break;
1017 };
1018 }
1019
1020 /**
1021 * ipr_init_res_entry - Initialize a resource entry struct.
1022 * @res: resource entry struct
1023 * @cfgtew: config table entry wrapper struct
1024 *
1025 * Return value:
1026 * none
1027 **/
1028 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1029 struct ipr_config_table_entry_wrapper *cfgtew)
1030 {
1031 int found = 0;
1032 unsigned int proto;
1033 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1034 struct ipr_resource_entry *gscsi_res = NULL;
1035
1036 res->needs_sync_complete = 0;
1037 res->in_erp = 0;
1038 res->add_to_ml = 0;
1039 res->del_from_ml = 0;
1040 res->resetting_device = 0;
1041 res->sdev = NULL;
1042 res->sata_port = NULL;
1043
1044 if (ioa_cfg->sis64) {
1045 proto = cfgtew->u.cfgte64->proto;
1046 res->res_flags = cfgtew->u.cfgte64->res_flags;
1047 res->qmodel = IPR_QUEUEING_MODEL64(res);
1048 res->type = cfgtew->u.cfgte64->res_type;
1049
1050 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1051 sizeof(res->res_path));
1052
1053 res->bus = 0;
1054 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1055 sizeof(res->dev_lun.scsi_lun));
1056 res->lun = scsilun_to_int(&res->dev_lun);
1057
1058 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1059 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1060 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1061 found = 1;
1062 res->target = gscsi_res->target;
1063 break;
1064 }
1065 }
1066 if (!found) {
1067 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1068 ioa_cfg->max_devs_supported);
1069 set_bit(res->target, ioa_cfg->target_ids);
1070 }
1071 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1072 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1073 res->target = 0;
1074 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1075 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1076 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1077 ioa_cfg->max_devs_supported);
1078 set_bit(res->target, ioa_cfg->array_ids);
1079 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1080 res->bus = IPR_VSET_VIRTUAL_BUS;
1081 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1082 ioa_cfg->max_devs_supported);
1083 set_bit(res->target, ioa_cfg->vset_ids);
1084 } else {
1085 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1086 ioa_cfg->max_devs_supported);
1087 set_bit(res->target, ioa_cfg->target_ids);
1088 }
1089 } else {
1090 proto = cfgtew->u.cfgte->proto;
1091 res->qmodel = IPR_QUEUEING_MODEL(res);
1092 res->flags = cfgtew->u.cfgte->flags;
1093 if (res->flags & IPR_IS_IOA_RESOURCE)
1094 res->type = IPR_RES_TYPE_IOAFP;
1095 else
1096 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1097
1098 res->bus = cfgtew->u.cfgte->res_addr.bus;
1099 res->target = cfgtew->u.cfgte->res_addr.target;
1100 res->lun = cfgtew->u.cfgte->res_addr.lun;
1101 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1102 }
1103
1104 ipr_update_ata_class(res, proto);
1105 }
1106
1107 /**
1108 * ipr_is_same_device - Determine if two devices are the same.
1109 * @res: resource entry struct
1110 * @cfgtew: config table entry wrapper struct
1111 *
1112 * Return value:
1113 * 1 if the devices are the same / 0 otherwise
1114 **/
1115 static int ipr_is_same_device(struct ipr_resource_entry *res,
1116 struct ipr_config_table_entry_wrapper *cfgtew)
1117 {
1118 if (res->ioa_cfg->sis64) {
1119 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1120 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1121 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1122 sizeof(cfgtew->u.cfgte64->lun))) {
1123 return 1;
1124 }
1125 } else {
1126 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1127 res->target == cfgtew->u.cfgte->res_addr.target &&
1128 res->lun == cfgtew->u.cfgte->res_addr.lun)
1129 return 1;
1130 }
1131
1132 return 0;
1133 }
1134
1135 /**
1136 * ipr_format_res_path - Format the resource path for printing.
1137 * @res_path: resource path
1138 * @buf: buffer
1139 *
1140 * Return value:
1141 * pointer to buffer
1142 **/
1143 static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
1144 {
1145 int i;
1146 char *p = buffer;
1147
1148 *p = '\0';
1149 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1150 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1151 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1152
1153 return buffer;
1154 }
1155
1156 /**
1157 * ipr_update_res_entry - Update the resource entry.
1158 * @res: resource entry struct
1159 * @cfgtew: config table entry wrapper struct
1160 *
1161 * Return value:
1162 * none
1163 **/
1164 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1165 struct ipr_config_table_entry_wrapper *cfgtew)
1166 {
1167 char buffer[IPR_MAX_RES_PATH_LENGTH];
1168 unsigned int proto;
1169 int new_path = 0;
1170
1171 if (res->ioa_cfg->sis64) {
1172 res->flags = cfgtew->u.cfgte64->flags;
1173 res->res_flags = cfgtew->u.cfgte64->res_flags;
1174 res->type = cfgtew->u.cfgte64->res_type;
1175
1176 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1177 sizeof(struct ipr_std_inq_data));
1178
1179 res->qmodel = IPR_QUEUEING_MODEL64(res);
1180 proto = cfgtew->u.cfgte64->proto;
1181 res->res_handle = cfgtew->u.cfgte64->res_handle;
1182 res->dev_id = cfgtew->u.cfgte64->dev_id;
1183
1184 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1185 sizeof(res->dev_lun.scsi_lun));
1186
1187 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1188 sizeof(res->res_path))) {
1189 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1190 sizeof(res->res_path));
1191 new_path = 1;
1192 }
1193
1194 if (res->sdev && new_path)
1195 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1196 ipr_format_res_path(res->res_path, buffer,
1197 sizeof(buffer)));
1198 } else {
1199 res->flags = cfgtew->u.cfgte->flags;
1200 if (res->flags & IPR_IS_IOA_RESOURCE)
1201 res->type = IPR_RES_TYPE_IOAFP;
1202 else
1203 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1204
1205 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1206 sizeof(struct ipr_std_inq_data));
1207
1208 res->qmodel = IPR_QUEUEING_MODEL(res);
1209 proto = cfgtew->u.cfgte->proto;
1210 res->res_handle = cfgtew->u.cfgte->res_handle;
1211 }
1212
1213 ipr_update_ata_class(res, proto);
1214 }
1215
1216 /**
1217 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1218 * for the resource.
1219 * @res: resource entry struct
1220 * @cfgtew: config table entry wrapper struct
1221 *
1222 * Return value:
1223 * none
1224 **/
1225 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1226 {
1227 struct ipr_resource_entry *gscsi_res = NULL;
1228 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1229
1230 if (!ioa_cfg->sis64)
1231 return;
1232
1233 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1234 clear_bit(res->target, ioa_cfg->array_ids);
1235 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1236 clear_bit(res->target, ioa_cfg->vset_ids);
1237 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1238 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1239 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1240 return;
1241 clear_bit(res->target, ioa_cfg->target_ids);
1242
1243 } else if (res->bus == 0)
1244 clear_bit(res->target, ioa_cfg->target_ids);
1245 }
1246
1247 /**
1248 * ipr_handle_config_change - Handle a config change from the adapter
1249 * @ioa_cfg: ioa config struct
1250 * @hostrcb: hostrcb
1251 *
1252 * Return value:
1253 * none
1254 **/
1255 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1256 struct ipr_hostrcb *hostrcb)
1257 {
1258 struct ipr_resource_entry *res = NULL;
1259 struct ipr_config_table_entry_wrapper cfgtew;
1260 __be32 cc_res_handle;
1261
1262 u32 is_ndn = 1;
1263
1264 if (ioa_cfg->sis64) {
1265 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1266 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1267 } else {
1268 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1269 cc_res_handle = cfgtew.u.cfgte->res_handle;
1270 }
1271
1272 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1273 if (res->res_handle == cc_res_handle) {
1274 is_ndn = 0;
1275 break;
1276 }
1277 }
1278
1279 if (is_ndn) {
1280 if (list_empty(&ioa_cfg->free_res_q)) {
1281 ipr_send_hcam(ioa_cfg,
1282 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1283 hostrcb);
1284 return;
1285 }
1286
1287 res = list_entry(ioa_cfg->free_res_q.next,
1288 struct ipr_resource_entry, queue);
1289
1290 list_del(&res->queue);
1291 ipr_init_res_entry(res, &cfgtew);
1292 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1293 }
1294
1295 ipr_update_res_entry(res, &cfgtew);
1296
1297 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1298 if (res->sdev) {
1299 res->del_from_ml = 1;
1300 res->res_handle = IPR_INVALID_RES_HANDLE;
1301 if (ioa_cfg->allow_ml_add_del)
1302 schedule_work(&ioa_cfg->work_q);
1303 } else {
1304 ipr_clear_res_target(res);
1305 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1306 }
1307 } else if (!res->sdev || res->del_from_ml) {
1308 res->add_to_ml = 1;
1309 if (ioa_cfg->allow_ml_add_del)
1310 schedule_work(&ioa_cfg->work_q);
1311 }
1312
1313 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1314 }
1315
1316 /**
1317 * ipr_process_ccn - Op done function for a CCN.
1318 * @ipr_cmd: ipr command struct
1319 *
1320 * This function is the op done function for a configuration
1321 * change notification host controlled async from the adapter.
1322 *
1323 * Return value:
1324 * none
1325 **/
1326 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1327 {
1328 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1329 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1330 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1331
1332 list_del(&hostrcb->queue);
1333 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1334
1335 if (ioasc) {
1336 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1337 dev_err(&ioa_cfg->pdev->dev,
1338 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1339
1340 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1341 } else {
1342 ipr_handle_config_change(ioa_cfg, hostrcb);
1343 }
1344 }
1345
1346 /**
1347 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1348 * @i: index into buffer
1349 * @buf: string to modify
1350 *
1351 * This function will strip all trailing whitespace, pad the end
1352 * of the string with a single space, and NULL terminate the string.
1353 *
1354 * Return value:
1355 * new length of string
1356 **/
1357 static int strip_and_pad_whitespace(int i, char *buf)
1358 {
1359 while (i && buf[i] == ' ')
1360 i--;
1361 buf[i+1] = ' ';
1362 buf[i+2] = '\0';
1363 return i + 2;
1364 }
1365
1366 /**
1367 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1368 * @prefix: string to print at start of printk
1369 * @hostrcb: hostrcb pointer
1370 * @vpd: vendor/product id/sn struct
1371 *
1372 * Return value:
1373 * none
1374 **/
1375 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1376 struct ipr_vpd *vpd)
1377 {
1378 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1379 int i = 0;
1380
1381 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1382 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1383
1384 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1385 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1386
1387 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1388 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1389
1390 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1391 }
1392
1393 /**
1394 * ipr_log_vpd - Log the passed VPD to the error log.
1395 * @vpd: vendor/product id/sn struct
1396 *
1397 * Return value:
1398 * none
1399 **/
1400 static void ipr_log_vpd(struct ipr_vpd *vpd)
1401 {
1402 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1403 + IPR_SERIAL_NUM_LEN];
1404
1405 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1406 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1407 IPR_PROD_ID_LEN);
1408 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1409 ipr_err("Vendor/Product ID: %s\n", buffer);
1410
1411 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1412 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1413 ipr_err(" Serial Number: %s\n", buffer);
1414 }
1415
1416 /**
1417 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1418 * @prefix: string to print at start of printk
1419 * @hostrcb: hostrcb pointer
1420 * @vpd: vendor/product id/sn/wwn struct
1421 *
1422 * Return value:
1423 * none
1424 **/
1425 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1426 struct ipr_ext_vpd *vpd)
1427 {
1428 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1429 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1430 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1431 }
1432
1433 /**
1434 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1435 * @vpd: vendor/product id/sn/wwn struct
1436 *
1437 * Return value:
1438 * none
1439 **/
1440 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1441 {
1442 ipr_log_vpd(&vpd->vpd);
1443 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1444 be32_to_cpu(vpd->wwid[1]));
1445 }
1446
1447 /**
1448 * ipr_log_enhanced_cache_error - Log a cache error.
1449 * @ioa_cfg: ioa config struct
1450 * @hostrcb: hostrcb struct
1451 *
1452 * Return value:
1453 * none
1454 **/
1455 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1456 struct ipr_hostrcb *hostrcb)
1457 {
1458 struct ipr_hostrcb_type_12_error *error;
1459
1460 if (ioa_cfg->sis64)
1461 error = &hostrcb->hcam.u.error64.u.type_12_error;
1462 else
1463 error = &hostrcb->hcam.u.error.u.type_12_error;
1464
1465 ipr_err("-----Current Configuration-----\n");
1466 ipr_err("Cache Directory Card Information:\n");
1467 ipr_log_ext_vpd(&error->ioa_vpd);
1468 ipr_err("Adapter Card Information:\n");
1469 ipr_log_ext_vpd(&error->cfc_vpd);
1470
1471 ipr_err("-----Expected Configuration-----\n");
1472 ipr_err("Cache Directory Card Information:\n");
1473 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1474 ipr_err("Adapter Card Information:\n");
1475 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1476
1477 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1478 be32_to_cpu(error->ioa_data[0]),
1479 be32_to_cpu(error->ioa_data[1]),
1480 be32_to_cpu(error->ioa_data[2]));
1481 }
1482
1483 /**
1484 * ipr_log_cache_error - Log a cache error.
1485 * @ioa_cfg: ioa config struct
1486 * @hostrcb: hostrcb struct
1487 *
1488 * Return value:
1489 * none
1490 **/
1491 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1492 struct ipr_hostrcb *hostrcb)
1493 {
1494 struct ipr_hostrcb_type_02_error *error =
1495 &hostrcb->hcam.u.error.u.type_02_error;
1496
1497 ipr_err("-----Current Configuration-----\n");
1498 ipr_err("Cache Directory Card Information:\n");
1499 ipr_log_vpd(&error->ioa_vpd);
1500 ipr_err("Adapter Card Information:\n");
1501 ipr_log_vpd(&error->cfc_vpd);
1502
1503 ipr_err("-----Expected Configuration-----\n");
1504 ipr_err("Cache Directory Card Information:\n");
1505 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1506 ipr_err("Adapter Card Information:\n");
1507 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1508
1509 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1510 be32_to_cpu(error->ioa_data[0]),
1511 be32_to_cpu(error->ioa_data[1]),
1512 be32_to_cpu(error->ioa_data[2]));
1513 }
1514
1515 /**
1516 * ipr_log_enhanced_config_error - Log a configuration error.
1517 * @ioa_cfg: ioa config struct
1518 * @hostrcb: hostrcb struct
1519 *
1520 * Return value:
1521 * none
1522 **/
1523 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1524 struct ipr_hostrcb *hostrcb)
1525 {
1526 int errors_logged, i;
1527 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1528 struct ipr_hostrcb_type_13_error *error;
1529
1530 error = &hostrcb->hcam.u.error.u.type_13_error;
1531 errors_logged = be32_to_cpu(error->errors_logged);
1532
1533 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1534 be32_to_cpu(error->errors_detected), errors_logged);
1535
1536 dev_entry = error->dev;
1537
1538 for (i = 0; i < errors_logged; i++, dev_entry++) {
1539 ipr_err_separator;
1540
1541 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1542 ipr_log_ext_vpd(&dev_entry->vpd);
1543
1544 ipr_err("-----New Device Information-----\n");
1545 ipr_log_ext_vpd(&dev_entry->new_vpd);
1546
1547 ipr_err("Cache Directory Card Information:\n");
1548 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1549
1550 ipr_err("Adapter Card Information:\n");
1551 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1552 }
1553 }
1554
1555 /**
1556 * ipr_log_sis64_config_error - Log a device error.
1557 * @ioa_cfg: ioa config struct
1558 * @hostrcb: hostrcb struct
1559 *
1560 * Return value:
1561 * none
1562 **/
1563 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1564 struct ipr_hostrcb *hostrcb)
1565 {
1566 int errors_logged, i;
1567 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1568 struct ipr_hostrcb_type_23_error *error;
1569 char buffer[IPR_MAX_RES_PATH_LENGTH];
1570
1571 error = &hostrcb->hcam.u.error64.u.type_23_error;
1572 errors_logged = be32_to_cpu(error->errors_logged);
1573
1574 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1575 be32_to_cpu(error->errors_detected), errors_logged);
1576
1577 dev_entry = error->dev;
1578
1579 for (i = 0; i < errors_logged; i++, dev_entry++) {
1580 ipr_err_separator;
1581
1582 ipr_err("Device %d : %s", i + 1,
1583 ipr_format_res_path(dev_entry->res_path, buffer,
1584 sizeof(buffer)));
1585 ipr_log_ext_vpd(&dev_entry->vpd);
1586
1587 ipr_err("-----New Device Information-----\n");
1588 ipr_log_ext_vpd(&dev_entry->new_vpd);
1589
1590 ipr_err("Cache Directory Card Information:\n");
1591 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1592
1593 ipr_err("Adapter Card Information:\n");
1594 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1595 }
1596 }
1597
1598 /**
1599 * ipr_log_config_error - Log a configuration error.
1600 * @ioa_cfg: ioa config struct
1601 * @hostrcb: hostrcb struct
1602 *
1603 * Return value:
1604 * none
1605 **/
1606 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1607 struct ipr_hostrcb *hostrcb)
1608 {
1609 int errors_logged, i;
1610 struct ipr_hostrcb_device_data_entry *dev_entry;
1611 struct ipr_hostrcb_type_03_error *error;
1612
1613 error = &hostrcb->hcam.u.error.u.type_03_error;
1614 errors_logged = be32_to_cpu(error->errors_logged);
1615
1616 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1617 be32_to_cpu(error->errors_detected), errors_logged);
1618
1619 dev_entry = error->dev;
1620
1621 for (i = 0; i < errors_logged; i++, dev_entry++) {
1622 ipr_err_separator;
1623
1624 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1625 ipr_log_vpd(&dev_entry->vpd);
1626
1627 ipr_err("-----New Device Information-----\n");
1628 ipr_log_vpd(&dev_entry->new_vpd);
1629
1630 ipr_err("Cache Directory Card Information:\n");
1631 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1632
1633 ipr_err("Adapter Card Information:\n");
1634 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1635
1636 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1637 be32_to_cpu(dev_entry->ioa_data[0]),
1638 be32_to_cpu(dev_entry->ioa_data[1]),
1639 be32_to_cpu(dev_entry->ioa_data[2]),
1640 be32_to_cpu(dev_entry->ioa_data[3]),
1641 be32_to_cpu(dev_entry->ioa_data[4]));
1642 }
1643 }
1644
1645 /**
1646 * ipr_log_enhanced_array_error - Log an array configuration error.
1647 * @ioa_cfg: ioa config struct
1648 * @hostrcb: hostrcb struct
1649 *
1650 * Return value:
1651 * none
1652 **/
1653 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1654 struct ipr_hostrcb *hostrcb)
1655 {
1656 int i, num_entries;
1657 struct ipr_hostrcb_type_14_error *error;
1658 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1659 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1660
1661 error = &hostrcb->hcam.u.error.u.type_14_error;
1662
1663 ipr_err_separator;
1664
1665 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1666 error->protection_level,
1667 ioa_cfg->host->host_no,
1668 error->last_func_vset_res_addr.bus,
1669 error->last_func_vset_res_addr.target,
1670 error->last_func_vset_res_addr.lun);
1671
1672 ipr_err_separator;
1673
1674 array_entry = error->array_member;
1675 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1676 ARRAY_SIZE(error->array_member));
1677
1678 for (i = 0; i < num_entries; i++, array_entry++) {
1679 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1680 continue;
1681
1682 if (be32_to_cpu(error->exposed_mode_adn) == i)
1683 ipr_err("Exposed Array Member %d:\n", i);
1684 else
1685 ipr_err("Array Member %d:\n", i);
1686
1687 ipr_log_ext_vpd(&array_entry->vpd);
1688 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1689 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1690 "Expected Location");
1691
1692 ipr_err_separator;
1693 }
1694 }
1695
1696 /**
1697 * ipr_log_array_error - Log an array configuration error.
1698 * @ioa_cfg: ioa config struct
1699 * @hostrcb: hostrcb struct
1700 *
1701 * Return value:
1702 * none
1703 **/
1704 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1705 struct ipr_hostrcb *hostrcb)
1706 {
1707 int i;
1708 struct ipr_hostrcb_type_04_error *error;
1709 struct ipr_hostrcb_array_data_entry *array_entry;
1710 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1711
1712 error = &hostrcb->hcam.u.error.u.type_04_error;
1713
1714 ipr_err_separator;
1715
1716 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1717 error->protection_level,
1718 ioa_cfg->host->host_no,
1719 error->last_func_vset_res_addr.bus,
1720 error->last_func_vset_res_addr.target,
1721 error->last_func_vset_res_addr.lun);
1722
1723 ipr_err_separator;
1724
1725 array_entry = error->array_member;
1726
1727 for (i = 0; i < 18; i++) {
1728 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1729 continue;
1730
1731 if (be32_to_cpu(error->exposed_mode_adn) == i)
1732 ipr_err("Exposed Array Member %d:\n", i);
1733 else
1734 ipr_err("Array Member %d:\n", i);
1735
1736 ipr_log_vpd(&array_entry->vpd);
1737
1738 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1739 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1740 "Expected Location");
1741
1742 ipr_err_separator;
1743
1744 if (i == 9)
1745 array_entry = error->array_member2;
1746 else
1747 array_entry++;
1748 }
1749 }
1750
1751 /**
1752 * ipr_log_hex_data - Log additional hex IOA error data.
1753 * @ioa_cfg: ioa config struct
1754 * @data: IOA error data
1755 * @len: data length
1756 *
1757 * Return value:
1758 * none
1759 **/
1760 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1761 {
1762 int i;
1763
1764 if (len == 0)
1765 return;
1766
1767 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1768 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1769
1770 for (i = 0; i < len / 4; i += 4) {
1771 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1772 be32_to_cpu(data[i]),
1773 be32_to_cpu(data[i+1]),
1774 be32_to_cpu(data[i+2]),
1775 be32_to_cpu(data[i+3]));
1776 }
1777 }
1778
1779 /**
1780 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1781 * @ioa_cfg: ioa config struct
1782 * @hostrcb: hostrcb struct
1783 *
1784 * Return value:
1785 * none
1786 **/
1787 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1788 struct ipr_hostrcb *hostrcb)
1789 {
1790 struct ipr_hostrcb_type_17_error *error;
1791
1792 if (ioa_cfg->sis64)
1793 error = &hostrcb->hcam.u.error64.u.type_17_error;
1794 else
1795 error = &hostrcb->hcam.u.error.u.type_17_error;
1796
1797 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1798 strim(error->failure_reason);
1799
1800 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1801 be32_to_cpu(hostrcb->hcam.u.error.prc));
1802 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1803 ipr_log_hex_data(ioa_cfg, error->data,
1804 be32_to_cpu(hostrcb->hcam.length) -
1805 (offsetof(struct ipr_hostrcb_error, u) +
1806 offsetof(struct ipr_hostrcb_type_17_error, data)));
1807 }
1808
1809 /**
1810 * ipr_log_dual_ioa_error - Log a dual adapter error.
1811 * @ioa_cfg: ioa config struct
1812 * @hostrcb: hostrcb struct
1813 *
1814 * Return value:
1815 * none
1816 **/
1817 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1818 struct ipr_hostrcb *hostrcb)
1819 {
1820 struct ipr_hostrcb_type_07_error *error;
1821
1822 error = &hostrcb->hcam.u.error.u.type_07_error;
1823 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1824 strim(error->failure_reason);
1825
1826 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1827 be32_to_cpu(hostrcb->hcam.u.error.prc));
1828 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1829 ipr_log_hex_data(ioa_cfg, error->data,
1830 be32_to_cpu(hostrcb->hcam.length) -
1831 (offsetof(struct ipr_hostrcb_error, u) +
1832 offsetof(struct ipr_hostrcb_type_07_error, data)));
1833 }
1834
1835 static const struct {
1836 u8 active;
1837 char *desc;
1838 } path_active_desc[] = {
1839 { IPR_PATH_NO_INFO, "Path" },
1840 { IPR_PATH_ACTIVE, "Active path" },
1841 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1842 };
1843
1844 static const struct {
1845 u8 state;
1846 char *desc;
1847 } path_state_desc[] = {
1848 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1849 { IPR_PATH_HEALTHY, "is healthy" },
1850 { IPR_PATH_DEGRADED, "is degraded" },
1851 { IPR_PATH_FAILED, "is failed" }
1852 };
1853
1854 /**
1855 * ipr_log_fabric_path - Log a fabric path error
1856 * @hostrcb: hostrcb struct
1857 * @fabric: fabric descriptor
1858 *
1859 * Return value:
1860 * none
1861 **/
1862 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1863 struct ipr_hostrcb_fabric_desc *fabric)
1864 {
1865 int i, j;
1866 u8 path_state = fabric->path_state;
1867 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1868 u8 state = path_state & IPR_PATH_STATE_MASK;
1869
1870 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1871 if (path_active_desc[i].active != active)
1872 continue;
1873
1874 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1875 if (path_state_desc[j].state != state)
1876 continue;
1877
1878 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1879 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1880 path_active_desc[i].desc, path_state_desc[j].desc,
1881 fabric->ioa_port);
1882 } else if (fabric->cascaded_expander == 0xff) {
1883 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1884 path_active_desc[i].desc, path_state_desc[j].desc,
1885 fabric->ioa_port, fabric->phy);
1886 } else if (fabric->phy == 0xff) {
1887 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1888 path_active_desc[i].desc, path_state_desc[j].desc,
1889 fabric->ioa_port, fabric->cascaded_expander);
1890 } else {
1891 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1892 path_active_desc[i].desc, path_state_desc[j].desc,
1893 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1894 }
1895 return;
1896 }
1897 }
1898
1899 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1900 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1901 }
1902
1903 /**
1904 * ipr_log64_fabric_path - Log a fabric path error
1905 * @hostrcb: hostrcb struct
1906 * @fabric: fabric descriptor
1907 *
1908 * Return value:
1909 * none
1910 **/
1911 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1912 struct ipr_hostrcb64_fabric_desc *fabric)
1913 {
1914 int i, j;
1915 u8 path_state = fabric->path_state;
1916 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1917 u8 state = path_state & IPR_PATH_STATE_MASK;
1918 char buffer[IPR_MAX_RES_PATH_LENGTH];
1919
1920 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1921 if (path_active_desc[i].active != active)
1922 continue;
1923
1924 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1925 if (path_state_desc[j].state != state)
1926 continue;
1927
1928 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
1929 path_active_desc[i].desc, path_state_desc[j].desc,
1930 ipr_format_res_path(fabric->res_path, buffer,
1931 sizeof(buffer)));
1932 return;
1933 }
1934 }
1935
1936 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
1937 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer)));
1938 }
1939
1940 static const struct {
1941 u8 type;
1942 char *desc;
1943 } path_type_desc[] = {
1944 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1945 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1946 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1947 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1948 };
1949
1950 static const struct {
1951 u8 status;
1952 char *desc;
1953 } path_status_desc[] = {
1954 { IPR_PATH_CFG_NO_PROB, "Functional" },
1955 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1956 { IPR_PATH_CFG_FAILED, "Failed" },
1957 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1958 { IPR_PATH_NOT_DETECTED, "Missing" },
1959 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1960 };
1961
1962 static const char *link_rate[] = {
1963 "unknown",
1964 "disabled",
1965 "phy reset problem",
1966 "spinup hold",
1967 "port selector",
1968 "unknown",
1969 "unknown",
1970 "unknown",
1971 "1.5Gbps",
1972 "3.0Gbps",
1973 "unknown",
1974 "unknown",
1975 "unknown",
1976 "unknown",
1977 "unknown",
1978 "unknown"
1979 };
1980
1981 /**
1982 * ipr_log_path_elem - Log a fabric path element.
1983 * @hostrcb: hostrcb struct
1984 * @cfg: fabric path element struct
1985 *
1986 * Return value:
1987 * none
1988 **/
1989 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1990 struct ipr_hostrcb_config_element *cfg)
1991 {
1992 int i, j;
1993 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1994 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1995
1996 if (type == IPR_PATH_CFG_NOT_EXIST)
1997 return;
1998
1999 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2000 if (path_type_desc[i].type != type)
2001 continue;
2002
2003 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2004 if (path_status_desc[j].status != status)
2005 continue;
2006
2007 if (type == IPR_PATH_CFG_IOA_PORT) {
2008 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2009 path_status_desc[j].desc, path_type_desc[i].desc,
2010 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2011 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2012 } else {
2013 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2014 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2015 path_status_desc[j].desc, path_type_desc[i].desc,
2016 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2017 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2018 } else if (cfg->cascaded_expander == 0xff) {
2019 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2020 "WWN=%08X%08X\n", path_status_desc[j].desc,
2021 path_type_desc[i].desc, cfg->phy,
2022 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2023 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2024 } else if (cfg->phy == 0xff) {
2025 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2026 "WWN=%08X%08X\n", path_status_desc[j].desc,
2027 path_type_desc[i].desc, cfg->cascaded_expander,
2028 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2029 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2030 } else {
2031 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2032 "WWN=%08X%08X\n", path_status_desc[j].desc,
2033 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2034 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2035 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2036 }
2037 }
2038 return;
2039 }
2040 }
2041
2042 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2043 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2044 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2045 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2046 }
2047
2048 /**
2049 * ipr_log64_path_elem - Log a fabric path element.
2050 * @hostrcb: hostrcb struct
2051 * @cfg: fabric path element struct
2052 *
2053 * Return value:
2054 * none
2055 **/
2056 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2057 struct ipr_hostrcb64_config_element *cfg)
2058 {
2059 int i, j;
2060 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2061 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2062 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2063 char buffer[IPR_MAX_RES_PATH_LENGTH];
2064
2065 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2066 return;
2067
2068 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2069 if (path_type_desc[i].type != type)
2070 continue;
2071
2072 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2073 if (path_status_desc[j].status != status)
2074 continue;
2075
2076 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2077 path_status_desc[j].desc, path_type_desc[i].desc,
2078 ipr_format_res_path(cfg->res_path, buffer,
2079 sizeof(buffer)),
2080 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2081 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2082 return;
2083 }
2084 }
2085 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2086 "WWN=%08X%08X\n", cfg->type_status,
2087 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)),
2088 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2089 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2090 }
2091
2092 /**
2093 * ipr_log_fabric_error - Log a fabric error.
2094 * @ioa_cfg: ioa config struct
2095 * @hostrcb: hostrcb struct
2096 *
2097 * Return value:
2098 * none
2099 **/
2100 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2101 struct ipr_hostrcb *hostrcb)
2102 {
2103 struct ipr_hostrcb_type_20_error *error;
2104 struct ipr_hostrcb_fabric_desc *fabric;
2105 struct ipr_hostrcb_config_element *cfg;
2106 int i, add_len;
2107
2108 error = &hostrcb->hcam.u.error.u.type_20_error;
2109 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2110 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2111
2112 add_len = be32_to_cpu(hostrcb->hcam.length) -
2113 (offsetof(struct ipr_hostrcb_error, u) +
2114 offsetof(struct ipr_hostrcb_type_20_error, desc));
2115
2116 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2117 ipr_log_fabric_path(hostrcb, fabric);
2118 for_each_fabric_cfg(fabric, cfg)
2119 ipr_log_path_elem(hostrcb, cfg);
2120
2121 add_len -= be16_to_cpu(fabric->length);
2122 fabric = (struct ipr_hostrcb_fabric_desc *)
2123 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2124 }
2125
2126 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2127 }
2128
2129 /**
2130 * ipr_log_sis64_array_error - Log a sis64 array error.
2131 * @ioa_cfg: ioa config struct
2132 * @hostrcb: hostrcb struct
2133 *
2134 * Return value:
2135 * none
2136 **/
2137 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2138 struct ipr_hostrcb *hostrcb)
2139 {
2140 int i, num_entries;
2141 struct ipr_hostrcb_type_24_error *error;
2142 struct ipr_hostrcb64_array_data_entry *array_entry;
2143 char buffer[IPR_MAX_RES_PATH_LENGTH];
2144 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2145
2146 error = &hostrcb->hcam.u.error64.u.type_24_error;
2147
2148 ipr_err_separator;
2149
2150 ipr_err("RAID %s Array Configuration: %s\n",
2151 error->protection_level,
2152 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer)));
2153
2154 ipr_err_separator;
2155
2156 array_entry = error->array_member;
2157 num_entries = min_t(u32, error->num_entries,
2158 ARRAY_SIZE(error->array_member));
2159
2160 for (i = 0; i < num_entries; i++, array_entry++) {
2161
2162 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2163 continue;
2164
2165 if (error->exposed_mode_adn == i)
2166 ipr_err("Exposed Array Member %d:\n", i);
2167 else
2168 ipr_err("Array Member %d:\n", i);
2169
2170 ipr_err("Array Member %d:\n", i);
2171 ipr_log_ext_vpd(&array_entry->vpd);
2172 ipr_err("Current Location: %s\n",
2173 ipr_format_res_path(array_entry->res_path, buffer,
2174 sizeof(buffer)));
2175 ipr_err("Expected Location: %s\n",
2176 ipr_format_res_path(array_entry->expected_res_path,
2177 buffer, sizeof(buffer)));
2178
2179 ipr_err_separator;
2180 }
2181 }
2182
2183 /**
2184 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2185 * @ioa_cfg: ioa config struct
2186 * @hostrcb: hostrcb struct
2187 *
2188 * Return value:
2189 * none
2190 **/
2191 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2192 struct ipr_hostrcb *hostrcb)
2193 {
2194 struct ipr_hostrcb_type_30_error *error;
2195 struct ipr_hostrcb64_fabric_desc *fabric;
2196 struct ipr_hostrcb64_config_element *cfg;
2197 int i, add_len;
2198
2199 error = &hostrcb->hcam.u.error64.u.type_30_error;
2200
2201 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2202 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2203
2204 add_len = be32_to_cpu(hostrcb->hcam.length) -
2205 (offsetof(struct ipr_hostrcb64_error, u) +
2206 offsetof(struct ipr_hostrcb_type_30_error, desc));
2207
2208 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2209 ipr_log64_fabric_path(hostrcb, fabric);
2210 for_each_fabric_cfg(fabric, cfg)
2211 ipr_log64_path_elem(hostrcb, cfg);
2212
2213 add_len -= be16_to_cpu(fabric->length);
2214 fabric = (struct ipr_hostrcb64_fabric_desc *)
2215 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2216 }
2217
2218 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2219 }
2220
2221 /**
2222 * ipr_log_generic_error - Log an adapter error.
2223 * @ioa_cfg: ioa config struct
2224 * @hostrcb: hostrcb struct
2225 *
2226 * Return value:
2227 * none
2228 **/
2229 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2230 struct ipr_hostrcb *hostrcb)
2231 {
2232 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2233 be32_to_cpu(hostrcb->hcam.length));
2234 }
2235
2236 /**
2237 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2238 * @ioasc: IOASC
2239 *
2240 * This function will return the index of into the ipr_error_table
2241 * for the specified IOASC. If the IOASC is not in the table,
2242 * 0 will be returned, which points to the entry used for unknown errors.
2243 *
2244 * Return value:
2245 * index into the ipr_error_table
2246 **/
2247 static u32 ipr_get_error(u32 ioasc)
2248 {
2249 int i;
2250
2251 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2252 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2253 return i;
2254
2255 return 0;
2256 }
2257
2258 /**
2259 * ipr_handle_log_data - Log an adapter error.
2260 * @ioa_cfg: ioa config struct
2261 * @hostrcb: hostrcb struct
2262 *
2263 * This function logs an adapter error to the system.
2264 *
2265 * Return value:
2266 * none
2267 **/
2268 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2269 struct ipr_hostrcb *hostrcb)
2270 {
2271 u32 ioasc;
2272 int error_index;
2273
2274 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2275 return;
2276
2277 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2278 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2279
2280 if (ioa_cfg->sis64)
2281 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2282 else
2283 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2284
2285 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2286 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2287 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2288 scsi_report_bus_reset(ioa_cfg->host,
2289 hostrcb->hcam.u.error.fd_res_addr.bus);
2290 }
2291
2292 error_index = ipr_get_error(ioasc);
2293
2294 if (!ipr_error_table[error_index].log_hcam)
2295 return;
2296
2297 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2298
2299 /* Set indication we have logged an error */
2300 ioa_cfg->errors_logged++;
2301
2302 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2303 return;
2304 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2305 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2306
2307 switch (hostrcb->hcam.overlay_id) {
2308 case IPR_HOST_RCB_OVERLAY_ID_2:
2309 ipr_log_cache_error(ioa_cfg, hostrcb);
2310 break;
2311 case IPR_HOST_RCB_OVERLAY_ID_3:
2312 ipr_log_config_error(ioa_cfg, hostrcb);
2313 break;
2314 case IPR_HOST_RCB_OVERLAY_ID_4:
2315 case IPR_HOST_RCB_OVERLAY_ID_6:
2316 ipr_log_array_error(ioa_cfg, hostrcb);
2317 break;
2318 case IPR_HOST_RCB_OVERLAY_ID_7:
2319 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2320 break;
2321 case IPR_HOST_RCB_OVERLAY_ID_12:
2322 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2323 break;
2324 case IPR_HOST_RCB_OVERLAY_ID_13:
2325 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2326 break;
2327 case IPR_HOST_RCB_OVERLAY_ID_14:
2328 case IPR_HOST_RCB_OVERLAY_ID_16:
2329 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2330 break;
2331 case IPR_HOST_RCB_OVERLAY_ID_17:
2332 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2333 break;
2334 case IPR_HOST_RCB_OVERLAY_ID_20:
2335 ipr_log_fabric_error(ioa_cfg, hostrcb);
2336 break;
2337 case IPR_HOST_RCB_OVERLAY_ID_23:
2338 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2339 break;
2340 case IPR_HOST_RCB_OVERLAY_ID_24:
2341 case IPR_HOST_RCB_OVERLAY_ID_26:
2342 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2343 break;
2344 case IPR_HOST_RCB_OVERLAY_ID_30:
2345 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2346 break;
2347 case IPR_HOST_RCB_OVERLAY_ID_1:
2348 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2349 default:
2350 ipr_log_generic_error(ioa_cfg, hostrcb);
2351 break;
2352 }
2353 }
2354
2355 /**
2356 * ipr_process_error - Op done function for an adapter error log.
2357 * @ipr_cmd: ipr command struct
2358 *
2359 * This function is the op done function for an error log host
2360 * controlled async from the adapter. It will log the error and
2361 * send the HCAM back to the adapter.
2362 *
2363 * Return value:
2364 * none
2365 **/
2366 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2367 {
2368 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2369 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2370 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2371 u32 fd_ioasc;
2372
2373 if (ioa_cfg->sis64)
2374 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2375 else
2376 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2377
2378 list_del(&hostrcb->queue);
2379 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2380
2381 if (!ioasc) {
2382 ipr_handle_log_data(ioa_cfg, hostrcb);
2383 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2384 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2385 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2386 dev_err(&ioa_cfg->pdev->dev,
2387 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2388 }
2389
2390 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2391 }
2392
2393 /**
2394 * ipr_timeout - An internally generated op has timed out.
2395 * @ipr_cmd: ipr command struct
2396 *
2397 * This function blocks host requests and initiates an
2398 * adapter reset.
2399 *
2400 * Return value:
2401 * none
2402 **/
2403 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2404 {
2405 unsigned long lock_flags = 0;
2406 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2407
2408 ENTER;
2409 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2410
2411 ioa_cfg->errors_logged++;
2412 dev_err(&ioa_cfg->pdev->dev,
2413 "Adapter being reset due to command timeout.\n");
2414
2415 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2416 ioa_cfg->sdt_state = GET_DUMP;
2417
2418 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2419 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2420
2421 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2422 LEAVE;
2423 }
2424
2425 /**
2426 * ipr_oper_timeout - Adapter timed out transitioning to operational
2427 * @ipr_cmd: ipr command struct
2428 *
2429 * This function blocks host requests and initiates an
2430 * adapter reset.
2431 *
2432 * Return value:
2433 * none
2434 **/
2435 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2436 {
2437 unsigned long lock_flags = 0;
2438 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2439
2440 ENTER;
2441 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2442
2443 ioa_cfg->errors_logged++;
2444 dev_err(&ioa_cfg->pdev->dev,
2445 "Adapter timed out transitioning to operational.\n");
2446
2447 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2448 ioa_cfg->sdt_state = GET_DUMP;
2449
2450 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2451 if (ipr_fastfail)
2452 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2453 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2454 }
2455
2456 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2457 LEAVE;
2458 }
2459
2460 /**
2461 * ipr_reset_reload - Reset/Reload the IOA
2462 * @ioa_cfg: ioa config struct
2463 * @shutdown_type: shutdown type
2464 *
2465 * This function resets the adapter and re-initializes it.
2466 * This function assumes that all new host commands have been stopped.
2467 * Return value:
2468 * SUCCESS / FAILED
2469 **/
2470 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
2471 enum ipr_shutdown_type shutdown_type)
2472 {
2473 if (!ioa_cfg->in_reset_reload)
2474 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
2475
2476 spin_unlock_irq(ioa_cfg->host->host_lock);
2477 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2478 spin_lock_irq(ioa_cfg->host->host_lock);
2479
2480 /* If we got hit with a host reset while we were already resetting
2481 the adapter for some reason, and the reset failed. */
2482 if (ioa_cfg->ioa_is_dead) {
2483 ipr_trace;
2484 return FAILED;
2485 }
2486
2487 return SUCCESS;
2488 }
2489
2490 /**
2491 * ipr_find_ses_entry - Find matching SES in SES table
2492 * @res: resource entry struct of SES
2493 *
2494 * Return value:
2495 * pointer to SES table entry / NULL on failure
2496 **/
2497 static const struct ipr_ses_table_entry *
2498 ipr_find_ses_entry(struct ipr_resource_entry *res)
2499 {
2500 int i, j, matches;
2501 struct ipr_std_inq_vpids *vpids;
2502 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2503
2504 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2505 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2506 if (ste->compare_product_id_byte[j] == 'X') {
2507 vpids = &res->std_inq_data.vpids;
2508 if (vpids->product_id[j] == ste->product_id[j])
2509 matches++;
2510 else
2511 break;
2512 } else
2513 matches++;
2514 }
2515
2516 if (matches == IPR_PROD_ID_LEN)
2517 return ste;
2518 }
2519
2520 return NULL;
2521 }
2522
2523 /**
2524 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2525 * @ioa_cfg: ioa config struct
2526 * @bus: SCSI bus
2527 * @bus_width: bus width
2528 *
2529 * Return value:
2530 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2531 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2532 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2533 * max 160MHz = max 320MB/sec).
2534 **/
2535 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2536 {
2537 struct ipr_resource_entry *res;
2538 const struct ipr_ses_table_entry *ste;
2539 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2540
2541 /* Loop through each config table entry in the config table buffer */
2542 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2543 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2544 continue;
2545
2546 if (bus != res->bus)
2547 continue;
2548
2549 if (!(ste = ipr_find_ses_entry(res)))
2550 continue;
2551
2552 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2553 }
2554
2555 return max_xfer_rate;
2556 }
2557
2558 /**
2559 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2560 * @ioa_cfg: ioa config struct
2561 * @max_delay: max delay in micro-seconds to wait
2562 *
2563 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2564 *
2565 * Return value:
2566 * 0 on success / other on failure
2567 **/
2568 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2569 {
2570 volatile u32 pcii_reg;
2571 int delay = 1;
2572
2573 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2574 while (delay < max_delay) {
2575 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2576
2577 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2578 return 0;
2579
2580 /* udelay cannot be used if delay is more than a few milliseconds */
2581 if ((delay / 1000) > MAX_UDELAY_MS)
2582 mdelay(delay / 1000);
2583 else
2584 udelay(delay);
2585
2586 delay += delay;
2587 }
2588 return -EIO;
2589 }
2590
2591 /**
2592 * ipr_get_sis64_dump_data_section - Dump IOA memory
2593 * @ioa_cfg: ioa config struct
2594 * @start_addr: adapter address to dump
2595 * @dest: destination kernel buffer
2596 * @length_in_words: length to dump in 4 byte words
2597 *
2598 * Return value:
2599 * 0 on success
2600 **/
2601 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2602 u32 start_addr,
2603 __be32 *dest, u32 length_in_words)
2604 {
2605 int i;
2606
2607 for (i = 0; i < length_in_words; i++) {
2608 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2609 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2610 dest++;
2611 }
2612
2613 return 0;
2614 }
2615
2616 /**
2617 * ipr_get_ldump_data_section - Dump IOA memory
2618 * @ioa_cfg: ioa config struct
2619 * @start_addr: adapter address to dump
2620 * @dest: destination kernel buffer
2621 * @length_in_words: length to dump in 4 byte words
2622 *
2623 * Return value:
2624 * 0 on success / -EIO on failure
2625 **/
2626 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2627 u32 start_addr,
2628 __be32 *dest, u32 length_in_words)
2629 {
2630 volatile u32 temp_pcii_reg;
2631 int i, delay = 0;
2632
2633 if (ioa_cfg->sis64)
2634 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2635 dest, length_in_words);
2636
2637 /* Write IOA interrupt reg starting LDUMP state */
2638 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2639 ioa_cfg->regs.set_uproc_interrupt_reg32);
2640
2641 /* Wait for IO debug acknowledge */
2642 if (ipr_wait_iodbg_ack(ioa_cfg,
2643 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2644 dev_err(&ioa_cfg->pdev->dev,
2645 "IOA dump long data transfer timeout\n");
2646 return -EIO;
2647 }
2648
2649 /* Signal LDUMP interlocked - clear IO debug ack */
2650 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2651 ioa_cfg->regs.clr_interrupt_reg);
2652
2653 /* Write Mailbox with starting address */
2654 writel(start_addr, ioa_cfg->ioa_mailbox);
2655
2656 /* Signal address valid - clear IOA Reset alert */
2657 writel(IPR_UPROCI_RESET_ALERT,
2658 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2659
2660 for (i = 0; i < length_in_words; i++) {
2661 /* Wait for IO debug acknowledge */
2662 if (ipr_wait_iodbg_ack(ioa_cfg,
2663 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2664 dev_err(&ioa_cfg->pdev->dev,
2665 "IOA dump short data transfer timeout\n");
2666 return -EIO;
2667 }
2668
2669 /* Read data from mailbox and increment destination pointer */
2670 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2671 dest++;
2672
2673 /* For all but the last word of data, signal data received */
2674 if (i < (length_in_words - 1)) {
2675 /* Signal dump data received - Clear IO debug Ack */
2676 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2677 ioa_cfg->regs.clr_interrupt_reg);
2678 }
2679 }
2680
2681 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2682 writel(IPR_UPROCI_RESET_ALERT,
2683 ioa_cfg->regs.set_uproc_interrupt_reg32);
2684
2685 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2686 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2687
2688 /* Signal dump data received - Clear IO debug Ack */
2689 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2690 ioa_cfg->regs.clr_interrupt_reg);
2691
2692 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2693 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2694 temp_pcii_reg =
2695 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2696
2697 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2698 return 0;
2699
2700 udelay(10);
2701 delay += 10;
2702 }
2703
2704 return 0;
2705 }
2706
2707 #ifdef CONFIG_SCSI_IPR_DUMP
2708 /**
2709 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2710 * @ioa_cfg: ioa config struct
2711 * @pci_address: adapter address
2712 * @length: length of data to copy
2713 *
2714 * Copy data from PCI adapter to kernel buffer.
2715 * Note: length MUST be a 4 byte multiple
2716 * Return value:
2717 * 0 on success / other on failure
2718 **/
2719 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2720 unsigned long pci_address, u32 length)
2721 {
2722 int bytes_copied = 0;
2723 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2724 __be32 *page;
2725 unsigned long lock_flags = 0;
2726 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2727
2728 if (ioa_cfg->sis64)
2729 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2730 else
2731 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2732
2733 while (bytes_copied < length &&
2734 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2735 if (ioa_dump->page_offset >= PAGE_SIZE ||
2736 ioa_dump->page_offset == 0) {
2737 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2738
2739 if (!page) {
2740 ipr_trace;
2741 return bytes_copied;
2742 }
2743
2744 ioa_dump->page_offset = 0;
2745 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2746 ioa_dump->next_page_index++;
2747 } else
2748 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2749
2750 rem_len = length - bytes_copied;
2751 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2752 cur_len = min(rem_len, rem_page_len);
2753
2754 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2755 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2756 rc = -EIO;
2757 } else {
2758 rc = ipr_get_ldump_data_section(ioa_cfg,
2759 pci_address + bytes_copied,
2760 &page[ioa_dump->page_offset / 4],
2761 (cur_len / sizeof(u32)));
2762 }
2763 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2764
2765 if (!rc) {
2766 ioa_dump->page_offset += cur_len;
2767 bytes_copied += cur_len;
2768 } else {
2769 ipr_trace;
2770 break;
2771 }
2772 schedule();
2773 }
2774
2775 return bytes_copied;
2776 }
2777
2778 /**
2779 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2780 * @hdr: dump entry header struct
2781 *
2782 * Return value:
2783 * nothing
2784 **/
2785 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2786 {
2787 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2788 hdr->num_elems = 1;
2789 hdr->offset = sizeof(*hdr);
2790 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2791 }
2792
2793 /**
2794 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2795 * @ioa_cfg: ioa config struct
2796 * @driver_dump: driver dump struct
2797 *
2798 * Return value:
2799 * nothing
2800 **/
2801 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2802 struct ipr_driver_dump *driver_dump)
2803 {
2804 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2805
2806 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2807 driver_dump->ioa_type_entry.hdr.len =
2808 sizeof(struct ipr_dump_ioa_type_entry) -
2809 sizeof(struct ipr_dump_entry_header);
2810 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2811 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2812 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2813 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2814 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2815 ucode_vpd->minor_release[1];
2816 driver_dump->hdr.num_entries++;
2817 }
2818
2819 /**
2820 * ipr_dump_version_data - Fill in the driver version in the dump.
2821 * @ioa_cfg: ioa config struct
2822 * @driver_dump: driver dump struct
2823 *
2824 * Return value:
2825 * nothing
2826 **/
2827 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2828 struct ipr_driver_dump *driver_dump)
2829 {
2830 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2831 driver_dump->version_entry.hdr.len =
2832 sizeof(struct ipr_dump_version_entry) -
2833 sizeof(struct ipr_dump_entry_header);
2834 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2835 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2836 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2837 driver_dump->hdr.num_entries++;
2838 }
2839
2840 /**
2841 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2842 * @ioa_cfg: ioa config struct
2843 * @driver_dump: driver dump struct
2844 *
2845 * Return value:
2846 * nothing
2847 **/
2848 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2849 struct ipr_driver_dump *driver_dump)
2850 {
2851 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2852 driver_dump->trace_entry.hdr.len =
2853 sizeof(struct ipr_dump_trace_entry) -
2854 sizeof(struct ipr_dump_entry_header);
2855 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2856 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2857 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2858 driver_dump->hdr.num_entries++;
2859 }
2860
2861 /**
2862 * ipr_dump_location_data - Fill in the IOA location in the dump.
2863 * @ioa_cfg: ioa config struct
2864 * @driver_dump: driver dump struct
2865 *
2866 * Return value:
2867 * nothing
2868 **/
2869 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2870 struct ipr_driver_dump *driver_dump)
2871 {
2872 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2873 driver_dump->location_entry.hdr.len =
2874 sizeof(struct ipr_dump_location_entry) -
2875 sizeof(struct ipr_dump_entry_header);
2876 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2877 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2878 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2879 driver_dump->hdr.num_entries++;
2880 }
2881
2882 /**
2883 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2884 * @ioa_cfg: ioa config struct
2885 * @dump: dump struct
2886 *
2887 * Return value:
2888 * nothing
2889 **/
2890 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2891 {
2892 unsigned long start_addr, sdt_word;
2893 unsigned long lock_flags = 0;
2894 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2895 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2896 u32 num_entries, max_num_entries, start_off, end_off;
2897 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
2898 struct ipr_sdt *sdt;
2899 int valid = 1;
2900 int i;
2901
2902 ENTER;
2903
2904 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2905
2906 if (ioa_cfg->sdt_state != READ_DUMP) {
2907 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2908 return;
2909 }
2910
2911 if (ioa_cfg->sis64) {
2912 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2913 ssleep(IPR_DUMP_DELAY_SECONDS);
2914 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2915 }
2916
2917 start_addr = readl(ioa_cfg->ioa_mailbox);
2918
2919 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
2920 dev_err(&ioa_cfg->pdev->dev,
2921 "Invalid dump table format: %lx\n", start_addr);
2922 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2923 return;
2924 }
2925
2926 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2927
2928 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2929
2930 /* Initialize the overall dump header */
2931 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2932 driver_dump->hdr.num_entries = 1;
2933 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2934 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2935 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2936 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2937
2938 ipr_dump_version_data(ioa_cfg, driver_dump);
2939 ipr_dump_location_data(ioa_cfg, driver_dump);
2940 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2941 ipr_dump_trace_data(ioa_cfg, driver_dump);
2942
2943 /* Update dump_header */
2944 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2945
2946 /* IOA Dump entry */
2947 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2948 ioa_dump->hdr.len = 0;
2949 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2950 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2951
2952 /* First entries in sdt are actually a list of dump addresses and
2953 lengths to gather the real dump data. sdt represents the pointer
2954 to the ioa generated dump table. Dump data will be extracted based
2955 on entries in this table */
2956 sdt = &ioa_dump->sdt;
2957
2958 if (ioa_cfg->sis64) {
2959 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
2960 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2961 } else {
2962 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
2963 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2964 }
2965
2966 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
2967 (max_num_entries * sizeof(struct ipr_sdt_entry));
2968 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2969 bytes_to_copy / sizeof(__be32));
2970
2971 /* Smart Dump table is ready to use and the first entry is valid */
2972 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2973 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
2974 dev_err(&ioa_cfg->pdev->dev,
2975 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2976 rc, be32_to_cpu(sdt->hdr.state));
2977 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2978 ioa_cfg->sdt_state = DUMP_OBTAINED;
2979 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2980 return;
2981 }
2982
2983 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2984
2985 if (num_entries > max_num_entries)
2986 num_entries = max_num_entries;
2987
2988 /* Update dump length to the actual data to be copied */
2989 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
2990 if (ioa_cfg->sis64)
2991 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
2992 else
2993 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
2994
2995 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2996
2997 for (i = 0; i < num_entries; i++) {
2998 if (ioa_dump->hdr.len > max_dump_size) {
2999 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3000 break;
3001 }
3002
3003 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3004 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3005 if (ioa_cfg->sis64)
3006 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3007 else {
3008 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3009 end_off = be32_to_cpu(sdt->entry[i].end_token);
3010
3011 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3012 bytes_to_copy = end_off - start_off;
3013 else
3014 valid = 0;
3015 }
3016 if (valid) {
3017 if (bytes_to_copy > max_dump_size) {
3018 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3019 continue;
3020 }
3021
3022 /* Copy data from adapter to driver buffers */
3023 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3024 bytes_to_copy);
3025
3026 ioa_dump->hdr.len += bytes_copied;
3027
3028 if (bytes_copied != bytes_to_copy) {
3029 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3030 break;
3031 }
3032 }
3033 }
3034 }
3035
3036 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3037
3038 /* Update dump_header */
3039 driver_dump->hdr.len += ioa_dump->hdr.len;
3040 wmb();
3041 ioa_cfg->sdt_state = DUMP_OBTAINED;
3042 LEAVE;
3043 }
3044
3045 #else
3046 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3047 #endif
3048
3049 /**
3050 * ipr_release_dump - Free adapter dump memory
3051 * @kref: kref struct
3052 *
3053 * Return value:
3054 * nothing
3055 **/
3056 static void ipr_release_dump(struct kref *kref)
3057 {
3058 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3059 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3060 unsigned long lock_flags = 0;
3061 int i;
3062
3063 ENTER;
3064 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3065 ioa_cfg->dump = NULL;
3066 ioa_cfg->sdt_state = INACTIVE;
3067 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3068
3069 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3070 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3071
3072 vfree(dump->ioa_dump.ioa_data);
3073 kfree(dump);
3074 LEAVE;
3075 }
3076
3077 /**
3078 * ipr_worker_thread - Worker thread
3079 * @work: ioa config struct
3080 *
3081 * Called at task level from a work thread. This function takes care
3082 * of adding and removing device from the mid-layer as configuration
3083 * changes are detected by the adapter.
3084 *
3085 * Return value:
3086 * nothing
3087 **/
3088 static void ipr_worker_thread(struct work_struct *work)
3089 {
3090 unsigned long lock_flags;
3091 struct ipr_resource_entry *res;
3092 struct scsi_device *sdev;
3093 struct ipr_dump *dump;
3094 struct ipr_ioa_cfg *ioa_cfg =
3095 container_of(work, struct ipr_ioa_cfg, work_q);
3096 u8 bus, target, lun;
3097 int did_work;
3098
3099 ENTER;
3100 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3101
3102 if (ioa_cfg->sdt_state == READ_DUMP) {
3103 dump = ioa_cfg->dump;
3104 if (!dump) {
3105 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3106 return;
3107 }
3108 kref_get(&dump->kref);
3109 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3110 ipr_get_ioa_dump(ioa_cfg, dump);
3111 kref_put(&dump->kref, ipr_release_dump);
3112
3113 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3114 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3115 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3116 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3117 return;
3118 }
3119
3120 restart:
3121 do {
3122 did_work = 0;
3123 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3124 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3125 return;
3126 }
3127
3128 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3129 if (res->del_from_ml && res->sdev) {
3130 did_work = 1;
3131 sdev = res->sdev;
3132 if (!scsi_device_get(sdev)) {
3133 if (!res->add_to_ml)
3134 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3135 else
3136 res->del_from_ml = 0;
3137 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3138 scsi_remove_device(sdev);
3139 scsi_device_put(sdev);
3140 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3141 }
3142 break;
3143 }
3144 }
3145 } while(did_work);
3146
3147 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3148 if (res->add_to_ml) {
3149 bus = res->bus;
3150 target = res->target;
3151 lun = res->lun;
3152 res->add_to_ml = 0;
3153 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3154 scsi_add_device(ioa_cfg->host, bus, target, lun);
3155 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3156 goto restart;
3157 }
3158 }
3159
3160 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3161 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3162 LEAVE;
3163 }
3164
3165 #ifdef CONFIG_SCSI_IPR_TRACE
3166 /**
3167 * ipr_read_trace - Dump the adapter trace
3168 * @filp: open sysfs file
3169 * @kobj: kobject struct
3170 * @bin_attr: bin_attribute struct
3171 * @buf: buffer
3172 * @off: offset
3173 * @count: buffer size
3174 *
3175 * Return value:
3176 * number of bytes printed to buffer
3177 **/
3178 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3179 struct bin_attribute *bin_attr,
3180 char *buf, loff_t off, size_t count)
3181 {
3182 struct device *dev = container_of(kobj, struct device, kobj);
3183 struct Scsi_Host *shost = class_to_shost(dev);
3184 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3185 unsigned long lock_flags = 0;
3186 ssize_t ret;
3187
3188 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3189 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3190 IPR_TRACE_SIZE);
3191 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3192
3193 return ret;
3194 }
3195
3196 static struct bin_attribute ipr_trace_attr = {
3197 .attr = {
3198 .name = "trace",
3199 .mode = S_IRUGO,
3200 },
3201 .size = 0,
3202 .read = ipr_read_trace,
3203 };
3204 #endif
3205
3206 /**
3207 * ipr_show_fw_version - Show the firmware version
3208 * @dev: class device struct
3209 * @buf: buffer
3210 *
3211 * Return value:
3212 * number of bytes printed to buffer
3213 **/
3214 static ssize_t ipr_show_fw_version(struct device *dev,
3215 struct device_attribute *attr, char *buf)
3216 {
3217 struct Scsi_Host *shost = class_to_shost(dev);
3218 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3219 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3220 unsigned long lock_flags = 0;
3221 int len;
3222
3223 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3224 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3225 ucode_vpd->major_release, ucode_vpd->card_type,
3226 ucode_vpd->minor_release[0],
3227 ucode_vpd->minor_release[1]);
3228 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3229 return len;
3230 }
3231
3232 static struct device_attribute ipr_fw_version_attr = {
3233 .attr = {
3234 .name = "fw_version",
3235 .mode = S_IRUGO,
3236 },
3237 .show = ipr_show_fw_version,
3238 };
3239
3240 /**
3241 * ipr_show_log_level - Show the adapter's error logging level
3242 * @dev: class device struct
3243 * @buf: buffer
3244 *
3245 * Return value:
3246 * number of bytes printed to buffer
3247 **/
3248 static ssize_t ipr_show_log_level(struct device *dev,
3249 struct device_attribute *attr, char *buf)
3250 {
3251 struct Scsi_Host *shost = class_to_shost(dev);
3252 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3253 unsigned long lock_flags = 0;
3254 int len;
3255
3256 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3257 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3258 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3259 return len;
3260 }
3261
3262 /**
3263 * ipr_store_log_level - Change the adapter's error logging level
3264 * @dev: class device struct
3265 * @buf: buffer
3266 *
3267 * Return value:
3268 * number of bytes printed to buffer
3269 **/
3270 static ssize_t ipr_store_log_level(struct device *dev,
3271 struct device_attribute *attr,
3272 const char *buf, size_t count)
3273 {
3274 struct Scsi_Host *shost = class_to_shost(dev);
3275 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3276 unsigned long lock_flags = 0;
3277
3278 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3279 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3281 return strlen(buf);
3282 }
3283
3284 static struct device_attribute ipr_log_level_attr = {
3285 .attr = {
3286 .name = "log_level",
3287 .mode = S_IRUGO | S_IWUSR,
3288 },
3289 .show = ipr_show_log_level,
3290 .store = ipr_store_log_level
3291 };
3292
3293 /**
3294 * ipr_store_diagnostics - IOA Diagnostics interface
3295 * @dev: device struct
3296 * @buf: buffer
3297 * @count: buffer size
3298 *
3299 * This function will reset the adapter and wait a reasonable
3300 * amount of time for any errors that the adapter might log.
3301 *
3302 * Return value:
3303 * count on success / other on failure
3304 **/
3305 static ssize_t ipr_store_diagnostics(struct device *dev,
3306 struct device_attribute *attr,
3307 const char *buf, size_t count)
3308 {
3309 struct Scsi_Host *shost = class_to_shost(dev);
3310 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3311 unsigned long lock_flags = 0;
3312 int rc = count;
3313
3314 if (!capable(CAP_SYS_ADMIN))
3315 return -EACCES;
3316
3317 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3318 while(ioa_cfg->in_reset_reload) {
3319 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3320 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3321 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3322 }
3323
3324 ioa_cfg->errors_logged = 0;
3325 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3326
3327 if (ioa_cfg->in_reset_reload) {
3328 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3329 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3330
3331 /* Wait for a second for any errors to be logged */
3332 msleep(1000);
3333 } else {
3334 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3335 return -EIO;
3336 }
3337
3338 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3339 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3340 rc = -EIO;
3341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3342
3343 return rc;
3344 }
3345
3346 static struct device_attribute ipr_diagnostics_attr = {
3347 .attr = {
3348 .name = "run_diagnostics",
3349 .mode = S_IWUSR,
3350 },
3351 .store = ipr_store_diagnostics
3352 };
3353
3354 /**
3355 * ipr_show_adapter_state - Show the adapter's state
3356 * @class_dev: device struct
3357 * @buf: buffer
3358 *
3359 * Return value:
3360 * number of bytes printed to buffer
3361 **/
3362 static ssize_t ipr_show_adapter_state(struct device *dev,
3363 struct device_attribute *attr, char *buf)
3364 {
3365 struct Scsi_Host *shost = class_to_shost(dev);
3366 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3367 unsigned long lock_flags = 0;
3368 int len;
3369
3370 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3371 if (ioa_cfg->ioa_is_dead)
3372 len = snprintf(buf, PAGE_SIZE, "offline\n");
3373 else
3374 len = snprintf(buf, PAGE_SIZE, "online\n");
3375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3376 return len;
3377 }
3378
3379 /**
3380 * ipr_store_adapter_state - Change adapter state
3381 * @dev: device struct
3382 * @buf: buffer
3383 * @count: buffer size
3384 *
3385 * This function will change the adapter's state.
3386 *
3387 * Return value:
3388 * count on success / other on failure
3389 **/
3390 static ssize_t ipr_store_adapter_state(struct device *dev,
3391 struct device_attribute *attr,
3392 const char *buf, size_t count)
3393 {
3394 struct Scsi_Host *shost = class_to_shost(dev);
3395 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3396 unsigned long lock_flags;
3397 int result = count;
3398
3399 if (!capable(CAP_SYS_ADMIN))
3400 return -EACCES;
3401
3402 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3403 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
3404 ioa_cfg->ioa_is_dead = 0;
3405 ioa_cfg->reset_retries = 0;
3406 ioa_cfg->in_ioa_bringdown = 0;
3407 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3408 }
3409 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3410 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3411
3412 return result;
3413 }
3414
3415 static struct device_attribute ipr_ioa_state_attr = {
3416 .attr = {
3417 .name = "online_state",
3418 .mode = S_IRUGO | S_IWUSR,
3419 },
3420 .show = ipr_show_adapter_state,
3421 .store = ipr_store_adapter_state
3422 };
3423
3424 /**
3425 * ipr_store_reset_adapter - Reset the adapter
3426 * @dev: device struct
3427 * @buf: buffer
3428 * @count: buffer size
3429 *
3430 * This function will reset the adapter.
3431 *
3432 * Return value:
3433 * count on success / other on failure
3434 **/
3435 static ssize_t ipr_store_reset_adapter(struct device *dev,
3436 struct device_attribute *attr,
3437 const char *buf, size_t count)
3438 {
3439 struct Scsi_Host *shost = class_to_shost(dev);
3440 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3441 unsigned long lock_flags;
3442 int result = count;
3443
3444 if (!capable(CAP_SYS_ADMIN))
3445 return -EACCES;
3446
3447 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3448 if (!ioa_cfg->in_reset_reload)
3449 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3450 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3451 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3452
3453 return result;
3454 }
3455
3456 static struct device_attribute ipr_ioa_reset_attr = {
3457 .attr = {
3458 .name = "reset_host",
3459 .mode = S_IWUSR,
3460 },
3461 .store = ipr_store_reset_adapter
3462 };
3463
3464 /**
3465 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3466 * @buf_len: buffer length
3467 *
3468 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3469 * list to use for microcode download
3470 *
3471 * Return value:
3472 * pointer to sglist / NULL on failure
3473 **/
3474 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3475 {
3476 int sg_size, order, bsize_elem, num_elem, i, j;
3477 struct ipr_sglist *sglist;
3478 struct scatterlist *scatterlist;
3479 struct page *page;
3480
3481 /* Get the minimum size per scatter/gather element */
3482 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3483
3484 /* Get the actual size per element */
3485 order = get_order(sg_size);
3486
3487 /* Determine the actual number of bytes per element */
3488 bsize_elem = PAGE_SIZE * (1 << order);
3489
3490 /* Determine the actual number of sg entries needed */
3491 if (buf_len % bsize_elem)
3492 num_elem = (buf_len / bsize_elem) + 1;
3493 else
3494 num_elem = buf_len / bsize_elem;
3495
3496 /* Allocate a scatter/gather list for the DMA */
3497 sglist = kzalloc(sizeof(struct ipr_sglist) +
3498 (sizeof(struct scatterlist) * (num_elem - 1)),
3499 GFP_KERNEL);
3500
3501 if (sglist == NULL) {
3502 ipr_trace;
3503 return NULL;
3504 }
3505
3506 scatterlist = sglist->scatterlist;
3507 sg_init_table(scatterlist, num_elem);
3508
3509 sglist->order = order;
3510 sglist->num_sg = num_elem;
3511
3512 /* Allocate a bunch of sg elements */
3513 for (i = 0; i < num_elem; i++) {
3514 page = alloc_pages(GFP_KERNEL, order);
3515 if (!page) {
3516 ipr_trace;
3517
3518 /* Free up what we already allocated */
3519 for (j = i - 1; j >= 0; j--)
3520 __free_pages(sg_page(&scatterlist[j]), order);
3521 kfree(sglist);
3522 return NULL;
3523 }
3524
3525 sg_set_page(&scatterlist[i], page, 0, 0);
3526 }
3527
3528 return sglist;
3529 }
3530
3531 /**
3532 * ipr_free_ucode_buffer - Frees a microcode download buffer
3533 * @p_dnld: scatter/gather list pointer
3534 *
3535 * Free a DMA'able ucode download buffer previously allocated with
3536 * ipr_alloc_ucode_buffer
3537 *
3538 * Return value:
3539 * nothing
3540 **/
3541 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3542 {
3543 int i;
3544
3545 for (i = 0; i < sglist->num_sg; i++)
3546 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3547
3548 kfree(sglist);
3549 }
3550
3551 /**
3552 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3553 * @sglist: scatter/gather list pointer
3554 * @buffer: buffer pointer
3555 * @len: buffer length
3556 *
3557 * Copy a microcode image from a user buffer into a buffer allocated by
3558 * ipr_alloc_ucode_buffer
3559 *
3560 * Return value:
3561 * 0 on success / other on failure
3562 **/
3563 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3564 u8 *buffer, u32 len)
3565 {
3566 int bsize_elem, i, result = 0;
3567 struct scatterlist *scatterlist;
3568 void *kaddr;
3569
3570 /* Determine the actual number of bytes per element */
3571 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3572
3573 scatterlist = sglist->scatterlist;
3574
3575 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3576 struct page *page = sg_page(&scatterlist[i]);
3577
3578 kaddr = kmap(page);
3579 memcpy(kaddr, buffer, bsize_elem);
3580 kunmap(page);
3581
3582 scatterlist[i].length = bsize_elem;
3583
3584 if (result != 0) {
3585 ipr_trace;
3586 return result;
3587 }
3588 }
3589
3590 if (len % bsize_elem) {
3591 struct page *page = sg_page(&scatterlist[i]);
3592
3593 kaddr = kmap(page);
3594 memcpy(kaddr, buffer, len % bsize_elem);
3595 kunmap(page);
3596
3597 scatterlist[i].length = len % bsize_elem;
3598 }
3599
3600 sglist->buffer_len = len;
3601 return result;
3602 }
3603
3604 /**
3605 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3606 * @ipr_cmd: ipr command struct
3607 * @sglist: scatter/gather list
3608 *
3609 * Builds a microcode download IOA data list (IOADL).
3610 *
3611 **/
3612 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3613 struct ipr_sglist *sglist)
3614 {
3615 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3616 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3617 struct scatterlist *scatterlist = sglist->scatterlist;
3618 int i;
3619
3620 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3621 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3622 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3623
3624 ioarcb->ioadl_len =
3625 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3626 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3627 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3628 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3629 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3630 }
3631
3632 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3633 }
3634
3635 /**
3636 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3637 * @ipr_cmd: ipr command struct
3638 * @sglist: scatter/gather list
3639 *
3640 * Builds a microcode download IOA data list (IOADL).
3641 *
3642 **/
3643 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3644 struct ipr_sglist *sglist)
3645 {
3646 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3647 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3648 struct scatterlist *scatterlist = sglist->scatterlist;
3649 int i;
3650
3651 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3652 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3653 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3654
3655 ioarcb->ioadl_len =
3656 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3657
3658 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3659 ioadl[i].flags_and_data_len =
3660 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3661 ioadl[i].address =
3662 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3663 }
3664
3665 ioadl[i-1].flags_and_data_len |=
3666 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3667 }
3668
3669 /**
3670 * ipr_update_ioa_ucode - Update IOA's microcode
3671 * @ioa_cfg: ioa config struct
3672 * @sglist: scatter/gather list
3673 *
3674 * Initiate an adapter reset to update the IOA's microcode
3675 *
3676 * Return value:
3677 * 0 on success / -EIO on failure
3678 **/
3679 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3680 struct ipr_sglist *sglist)
3681 {
3682 unsigned long lock_flags;
3683
3684 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3685 while(ioa_cfg->in_reset_reload) {
3686 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3687 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3688 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3689 }
3690
3691 if (ioa_cfg->ucode_sglist) {
3692 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3693 dev_err(&ioa_cfg->pdev->dev,
3694 "Microcode download already in progress\n");
3695 return -EIO;
3696 }
3697
3698 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3699 sglist->num_sg, DMA_TO_DEVICE);
3700
3701 if (!sglist->num_dma_sg) {
3702 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3703 dev_err(&ioa_cfg->pdev->dev,
3704 "Failed to map microcode download buffer!\n");
3705 return -EIO;
3706 }
3707
3708 ioa_cfg->ucode_sglist = sglist;
3709 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3710 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3711 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3712
3713 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3714 ioa_cfg->ucode_sglist = NULL;
3715 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3716 return 0;
3717 }
3718
3719 /**
3720 * ipr_store_update_fw - Update the firmware on the adapter
3721 * @class_dev: device struct
3722 * @buf: buffer
3723 * @count: buffer size
3724 *
3725 * This function will update the firmware on the adapter.
3726 *
3727 * Return value:
3728 * count on success / other on failure
3729 **/
3730 static ssize_t ipr_store_update_fw(struct device *dev,
3731 struct device_attribute *attr,
3732 const char *buf, size_t count)
3733 {
3734 struct Scsi_Host *shost = class_to_shost(dev);
3735 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3736 struct ipr_ucode_image_header *image_hdr;
3737 const struct firmware *fw_entry;
3738 struct ipr_sglist *sglist;
3739 char fname[100];
3740 char *src;
3741 int len, result, dnld_size;
3742
3743 if (!capable(CAP_SYS_ADMIN))
3744 return -EACCES;
3745
3746 len = snprintf(fname, 99, "%s", buf);
3747 fname[len-1] = '\0';
3748
3749 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3750 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3751 return -EIO;
3752 }
3753
3754 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3755
3756 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3757 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3758 sglist = ipr_alloc_ucode_buffer(dnld_size);
3759
3760 if (!sglist) {
3761 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3762 release_firmware(fw_entry);
3763 return -ENOMEM;
3764 }
3765
3766 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3767
3768 if (result) {
3769 dev_err(&ioa_cfg->pdev->dev,
3770 "Microcode buffer copy to DMA buffer failed\n");
3771 goto out;
3772 }
3773
3774 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
3775
3776 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3777
3778 if (!result)
3779 result = count;
3780 out:
3781 ipr_free_ucode_buffer(sglist);
3782 release_firmware(fw_entry);
3783 return result;
3784 }
3785
3786 static struct device_attribute ipr_update_fw_attr = {
3787 .attr = {
3788 .name = "update_fw",
3789 .mode = S_IWUSR,
3790 },
3791 .store = ipr_store_update_fw
3792 };
3793
3794 /**
3795 * ipr_show_fw_type - Show the adapter's firmware type.
3796 * @dev: class device struct
3797 * @buf: buffer
3798 *
3799 * Return value:
3800 * number of bytes printed to buffer
3801 **/
3802 static ssize_t ipr_show_fw_type(struct device *dev,
3803 struct device_attribute *attr, char *buf)
3804 {
3805 struct Scsi_Host *shost = class_to_shost(dev);
3806 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3807 unsigned long lock_flags = 0;
3808 int len;
3809
3810 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3811 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
3812 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3813 return len;
3814 }
3815
3816 static struct device_attribute ipr_ioa_fw_type_attr = {
3817 .attr = {
3818 .name = "fw_type",
3819 .mode = S_IRUGO,
3820 },
3821 .show = ipr_show_fw_type
3822 };
3823
3824 static struct device_attribute *ipr_ioa_attrs[] = {
3825 &ipr_fw_version_attr,
3826 &ipr_log_level_attr,
3827 &ipr_diagnostics_attr,
3828 &ipr_ioa_state_attr,
3829 &ipr_ioa_reset_attr,
3830 &ipr_update_fw_attr,
3831 &ipr_ioa_fw_type_attr,
3832 NULL,
3833 };
3834
3835 #ifdef CONFIG_SCSI_IPR_DUMP
3836 /**
3837 * ipr_read_dump - Dump the adapter
3838 * @filp: open sysfs file
3839 * @kobj: kobject struct
3840 * @bin_attr: bin_attribute struct
3841 * @buf: buffer
3842 * @off: offset
3843 * @count: buffer size
3844 *
3845 * Return value:
3846 * number of bytes printed to buffer
3847 **/
3848 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
3849 struct bin_attribute *bin_attr,
3850 char *buf, loff_t off, size_t count)
3851 {
3852 struct device *cdev = container_of(kobj, struct device, kobj);
3853 struct Scsi_Host *shost = class_to_shost(cdev);
3854 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3855 struct ipr_dump *dump;
3856 unsigned long lock_flags = 0;
3857 char *src;
3858 int len, sdt_end;
3859 size_t rc = count;
3860
3861 if (!capable(CAP_SYS_ADMIN))
3862 return -EACCES;
3863
3864 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3865 dump = ioa_cfg->dump;
3866
3867 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3868 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3869 return 0;
3870 }
3871 kref_get(&dump->kref);
3872 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3873
3874 if (off > dump->driver_dump.hdr.len) {
3875 kref_put(&dump->kref, ipr_release_dump);
3876 return 0;
3877 }
3878
3879 if (off + count > dump->driver_dump.hdr.len) {
3880 count = dump->driver_dump.hdr.len - off;
3881 rc = count;
3882 }
3883
3884 if (count && off < sizeof(dump->driver_dump)) {
3885 if (off + count > sizeof(dump->driver_dump))
3886 len = sizeof(dump->driver_dump) - off;
3887 else
3888 len = count;
3889 src = (u8 *)&dump->driver_dump + off;
3890 memcpy(buf, src, len);
3891 buf += len;
3892 off += len;
3893 count -= len;
3894 }
3895
3896 off -= sizeof(dump->driver_dump);
3897
3898 if (ioa_cfg->sis64)
3899 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
3900 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
3901 sizeof(struct ipr_sdt_entry));
3902 else
3903 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
3904 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
3905
3906 if (count && off < sdt_end) {
3907 if (off + count > sdt_end)
3908 len = sdt_end - off;
3909 else
3910 len = count;
3911 src = (u8 *)&dump->ioa_dump + off;
3912 memcpy(buf, src, len);
3913 buf += len;
3914 off += len;
3915 count -= len;
3916 }
3917
3918 off -= sdt_end;
3919
3920 while (count) {
3921 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3922 len = PAGE_ALIGN(off) - off;
3923 else
3924 len = count;
3925 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3926 src += off & ~PAGE_MASK;
3927 memcpy(buf, src, len);
3928 buf += len;
3929 off += len;
3930 count -= len;
3931 }
3932
3933 kref_put(&dump->kref, ipr_release_dump);
3934 return rc;
3935 }
3936
3937 /**
3938 * ipr_alloc_dump - Prepare for adapter dump
3939 * @ioa_cfg: ioa config struct
3940 *
3941 * Return value:
3942 * 0 on success / other on failure
3943 **/
3944 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3945 {
3946 struct ipr_dump *dump;
3947 __be32 **ioa_data;
3948 unsigned long lock_flags = 0;
3949
3950 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3951
3952 if (!dump) {
3953 ipr_err("Dump memory allocation failed\n");
3954 return -ENOMEM;
3955 }
3956
3957 if (ioa_cfg->sis64)
3958 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
3959 else
3960 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
3961
3962 if (!ioa_data) {
3963 ipr_err("Dump memory allocation failed\n");
3964 kfree(dump);
3965 return -ENOMEM;
3966 }
3967
3968 dump->ioa_dump.ioa_data = ioa_data;
3969
3970 kref_init(&dump->kref);
3971 dump->ioa_cfg = ioa_cfg;
3972
3973 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3974
3975 if (INACTIVE != ioa_cfg->sdt_state) {
3976 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3977 vfree(dump->ioa_dump.ioa_data);
3978 kfree(dump);
3979 return 0;
3980 }
3981
3982 ioa_cfg->dump = dump;
3983 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3984 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3985 ioa_cfg->dump_taken = 1;
3986 schedule_work(&ioa_cfg->work_q);
3987 }
3988 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3989
3990 return 0;
3991 }
3992
3993 /**
3994 * ipr_free_dump - Free adapter dump memory
3995 * @ioa_cfg: ioa config struct
3996 *
3997 * Return value:
3998 * 0 on success / other on failure
3999 **/
4000 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4001 {
4002 struct ipr_dump *dump;
4003 unsigned long lock_flags = 0;
4004
4005 ENTER;
4006
4007 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4008 dump = ioa_cfg->dump;
4009 if (!dump) {
4010 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4011 return 0;
4012 }
4013
4014 ioa_cfg->dump = NULL;
4015 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4016
4017 kref_put(&dump->kref, ipr_release_dump);
4018
4019 LEAVE;
4020 return 0;
4021 }
4022
4023 /**
4024 * ipr_write_dump - Setup dump state of adapter
4025 * @filp: open sysfs file
4026 * @kobj: kobject struct
4027 * @bin_attr: bin_attribute struct
4028 * @buf: buffer
4029 * @off: offset
4030 * @count: buffer size
4031 *
4032 * Return value:
4033 * number of bytes printed to buffer
4034 **/
4035 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4036 struct bin_attribute *bin_attr,
4037 char *buf, loff_t off, size_t count)
4038 {
4039 struct device *cdev = container_of(kobj, struct device, kobj);
4040 struct Scsi_Host *shost = class_to_shost(cdev);
4041 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4042 int rc;
4043
4044 if (!capable(CAP_SYS_ADMIN))
4045 return -EACCES;
4046
4047 if (buf[0] == '1')
4048 rc = ipr_alloc_dump(ioa_cfg);
4049 else if (buf[0] == '0')
4050 rc = ipr_free_dump(ioa_cfg);
4051 else
4052 return -EINVAL;
4053
4054 if (rc)
4055 return rc;
4056 else
4057 return count;
4058 }
4059
4060 static struct bin_attribute ipr_dump_attr = {
4061 .attr = {
4062 .name = "dump",
4063 .mode = S_IRUSR | S_IWUSR,
4064 },
4065 .size = 0,
4066 .read = ipr_read_dump,
4067 .write = ipr_write_dump
4068 };
4069 #else
4070 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4071 #endif
4072
4073 /**
4074 * ipr_change_queue_depth - Change the device's queue depth
4075 * @sdev: scsi device struct
4076 * @qdepth: depth to set
4077 * @reason: calling context
4078 *
4079 * Return value:
4080 * actual depth set
4081 **/
4082 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4083 int reason)
4084 {
4085 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4086 struct ipr_resource_entry *res;
4087 unsigned long lock_flags = 0;
4088
4089 if (reason != SCSI_QDEPTH_DEFAULT)
4090 return -EOPNOTSUPP;
4091
4092 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4093 res = (struct ipr_resource_entry *)sdev->hostdata;
4094
4095 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4096 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4097 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4098
4099 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4100 return sdev->queue_depth;
4101 }
4102
4103 /**
4104 * ipr_change_queue_type - Change the device's queue type
4105 * @dsev: scsi device struct
4106 * @tag_type: type of tags to use
4107 *
4108 * Return value:
4109 * actual queue type set
4110 **/
4111 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4112 {
4113 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4114 struct ipr_resource_entry *res;
4115 unsigned long lock_flags = 0;
4116
4117 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4118 res = (struct ipr_resource_entry *)sdev->hostdata;
4119
4120 if (res) {
4121 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4122 /*
4123 * We don't bother quiescing the device here since the
4124 * adapter firmware does it for us.
4125 */
4126 scsi_set_tag_type(sdev, tag_type);
4127
4128 if (tag_type)
4129 scsi_activate_tcq(sdev, sdev->queue_depth);
4130 else
4131 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4132 } else
4133 tag_type = 0;
4134 } else
4135 tag_type = 0;
4136
4137 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4138 return tag_type;
4139 }
4140
4141 /**
4142 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4143 * @dev: device struct
4144 * @attr: device attribute structure
4145 * @buf: buffer
4146 *
4147 * Return value:
4148 * number of bytes printed to buffer
4149 **/
4150 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4151 {
4152 struct scsi_device *sdev = to_scsi_device(dev);
4153 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4154 struct ipr_resource_entry *res;
4155 unsigned long lock_flags = 0;
4156 ssize_t len = -ENXIO;
4157
4158 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4159 res = (struct ipr_resource_entry *)sdev->hostdata;
4160 if (res)
4161 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4162 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4163 return len;
4164 }
4165
4166 static struct device_attribute ipr_adapter_handle_attr = {
4167 .attr = {
4168 .name = "adapter_handle",
4169 .mode = S_IRUSR,
4170 },
4171 .show = ipr_show_adapter_handle
4172 };
4173
4174 /**
4175 * ipr_show_resource_path - Show the resource path or the resource address for
4176 * this device.
4177 * @dev: device struct
4178 * @attr: device attribute structure
4179 * @buf: buffer
4180 *
4181 * Return value:
4182 * number of bytes printed to buffer
4183 **/
4184 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4185 {
4186 struct scsi_device *sdev = to_scsi_device(dev);
4187 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4188 struct ipr_resource_entry *res;
4189 unsigned long lock_flags = 0;
4190 ssize_t len = -ENXIO;
4191 char buffer[IPR_MAX_RES_PATH_LENGTH];
4192
4193 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4194 res = (struct ipr_resource_entry *)sdev->hostdata;
4195 if (res && ioa_cfg->sis64)
4196 len = snprintf(buf, PAGE_SIZE, "%s\n",
4197 ipr_format_res_path(res->res_path, buffer,
4198 sizeof(buffer)));
4199 else if (res)
4200 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4201 res->bus, res->target, res->lun);
4202
4203 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4204 return len;
4205 }
4206
4207 static struct device_attribute ipr_resource_path_attr = {
4208 .attr = {
4209 .name = "resource_path",
4210 .mode = S_IRUGO,
4211 },
4212 .show = ipr_show_resource_path
4213 };
4214
4215 /**
4216 * ipr_show_device_id - Show the device_id for this device.
4217 * @dev: device struct
4218 * @attr: device attribute structure
4219 * @buf: buffer
4220 *
4221 * Return value:
4222 * number of bytes printed to buffer
4223 **/
4224 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4225 {
4226 struct scsi_device *sdev = to_scsi_device(dev);
4227 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4228 struct ipr_resource_entry *res;
4229 unsigned long lock_flags = 0;
4230 ssize_t len = -ENXIO;
4231
4232 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4233 res = (struct ipr_resource_entry *)sdev->hostdata;
4234 if (res && ioa_cfg->sis64)
4235 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id);
4236 else if (res)
4237 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4238
4239 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4240 return len;
4241 }
4242
4243 static struct device_attribute ipr_device_id_attr = {
4244 .attr = {
4245 .name = "device_id",
4246 .mode = S_IRUGO,
4247 },
4248 .show = ipr_show_device_id
4249 };
4250
4251 /**
4252 * ipr_show_resource_type - Show the resource type for this device.
4253 * @dev: device struct
4254 * @attr: device attribute structure
4255 * @buf: buffer
4256 *
4257 * Return value:
4258 * number of bytes printed to buffer
4259 **/
4260 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4261 {
4262 struct scsi_device *sdev = to_scsi_device(dev);
4263 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4264 struct ipr_resource_entry *res;
4265 unsigned long lock_flags = 0;
4266 ssize_t len = -ENXIO;
4267
4268 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4269 res = (struct ipr_resource_entry *)sdev->hostdata;
4270
4271 if (res)
4272 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4273
4274 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4275 return len;
4276 }
4277
4278 static struct device_attribute ipr_resource_type_attr = {
4279 .attr = {
4280 .name = "resource_type",
4281 .mode = S_IRUGO,
4282 },
4283 .show = ipr_show_resource_type
4284 };
4285
4286 static struct device_attribute *ipr_dev_attrs[] = {
4287 &ipr_adapter_handle_attr,
4288 &ipr_resource_path_attr,
4289 &ipr_device_id_attr,
4290 &ipr_resource_type_attr,
4291 NULL,
4292 };
4293
4294 /**
4295 * ipr_biosparam - Return the HSC mapping
4296 * @sdev: scsi device struct
4297 * @block_device: block device pointer
4298 * @capacity: capacity of the device
4299 * @parm: Array containing returned HSC values.
4300 *
4301 * This function generates the HSC parms that fdisk uses.
4302 * We want to make sure we return something that places partitions
4303 * on 4k boundaries for best performance with the IOA.
4304 *
4305 * Return value:
4306 * 0 on success
4307 **/
4308 static int ipr_biosparam(struct scsi_device *sdev,
4309 struct block_device *block_device,
4310 sector_t capacity, int *parm)
4311 {
4312 int heads, sectors;
4313 sector_t cylinders;
4314
4315 heads = 128;
4316 sectors = 32;
4317
4318 cylinders = capacity;
4319 sector_div(cylinders, (128 * 32));
4320
4321 /* return result */
4322 parm[0] = heads;
4323 parm[1] = sectors;
4324 parm[2] = cylinders;
4325
4326 return 0;
4327 }
4328
4329 /**
4330 * ipr_find_starget - Find target based on bus/target.
4331 * @starget: scsi target struct
4332 *
4333 * Return value:
4334 * resource entry pointer if found / NULL if not found
4335 **/
4336 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4337 {
4338 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4339 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4340 struct ipr_resource_entry *res;
4341
4342 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4343 if ((res->bus == starget->channel) &&
4344 (res->target == starget->id)) {
4345 return res;
4346 }
4347 }
4348
4349 return NULL;
4350 }
4351
4352 static struct ata_port_info sata_port_info;
4353
4354 /**
4355 * ipr_target_alloc - Prepare for commands to a SCSI target
4356 * @starget: scsi target struct
4357 *
4358 * If the device is a SATA device, this function allocates an
4359 * ATA port with libata, else it does nothing.
4360 *
4361 * Return value:
4362 * 0 on success / non-0 on failure
4363 **/
4364 static int ipr_target_alloc(struct scsi_target *starget)
4365 {
4366 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4367 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4368 struct ipr_sata_port *sata_port;
4369 struct ata_port *ap;
4370 struct ipr_resource_entry *res;
4371 unsigned long lock_flags;
4372
4373 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4374 res = ipr_find_starget(starget);
4375 starget->hostdata = NULL;
4376
4377 if (res && ipr_is_gata(res)) {
4378 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4379 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4380 if (!sata_port)
4381 return -ENOMEM;
4382
4383 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4384 if (ap) {
4385 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4386 sata_port->ioa_cfg = ioa_cfg;
4387 sata_port->ap = ap;
4388 sata_port->res = res;
4389
4390 res->sata_port = sata_port;
4391 ap->private_data = sata_port;
4392 starget->hostdata = sata_port;
4393 } else {
4394 kfree(sata_port);
4395 return -ENOMEM;
4396 }
4397 }
4398 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4399
4400 return 0;
4401 }
4402
4403 /**
4404 * ipr_target_destroy - Destroy a SCSI target
4405 * @starget: scsi target struct
4406 *
4407 * If the device was a SATA device, this function frees the libata
4408 * ATA port, else it does nothing.
4409 *
4410 **/
4411 static void ipr_target_destroy(struct scsi_target *starget)
4412 {
4413 struct ipr_sata_port *sata_port = starget->hostdata;
4414 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4415 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4416
4417 if (ioa_cfg->sis64) {
4418 if (!ipr_find_starget(starget)) {
4419 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4420 clear_bit(starget->id, ioa_cfg->array_ids);
4421 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4422 clear_bit(starget->id, ioa_cfg->vset_ids);
4423 else if (starget->channel == 0)
4424 clear_bit(starget->id, ioa_cfg->target_ids);
4425 }
4426 }
4427
4428 if (sata_port) {
4429 starget->hostdata = NULL;
4430 ata_sas_port_destroy(sata_port->ap);
4431 kfree(sata_port);
4432 }
4433 }
4434
4435 /**
4436 * ipr_find_sdev - Find device based on bus/target/lun.
4437 * @sdev: scsi device struct
4438 *
4439 * Return value:
4440 * resource entry pointer if found / NULL if not found
4441 **/
4442 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4443 {
4444 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4445 struct ipr_resource_entry *res;
4446
4447 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4448 if ((res->bus == sdev->channel) &&
4449 (res->target == sdev->id) &&
4450 (res->lun == sdev->lun))
4451 return res;
4452 }
4453
4454 return NULL;
4455 }
4456
4457 /**
4458 * ipr_slave_destroy - Unconfigure a SCSI device
4459 * @sdev: scsi device struct
4460 *
4461 * Return value:
4462 * nothing
4463 **/
4464 static void ipr_slave_destroy(struct scsi_device *sdev)
4465 {
4466 struct ipr_resource_entry *res;
4467 struct ipr_ioa_cfg *ioa_cfg;
4468 unsigned long lock_flags = 0;
4469
4470 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4471
4472 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4473 res = (struct ipr_resource_entry *) sdev->hostdata;
4474 if (res) {
4475 if (res->sata_port)
4476 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4477 sdev->hostdata = NULL;
4478 res->sdev = NULL;
4479 res->sata_port = NULL;
4480 }
4481 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4482 }
4483
4484 /**
4485 * ipr_slave_configure - Configure a SCSI device
4486 * @sdev: scsi device struct
4487 *
4488 * This function configures the specified scsi device.
4489 *
4490 * Return value:
4491 * 0 on success
4492 **/
4493 static int ipr_slave_configure(struct scsi_device *sdev)
4494 {
4495 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4496 struct ipr_resource_entry *res;
4497 struct ata_port *ap = NULL;
4498 unsigned long lock_flags = 0;
4499 char buffer[IPR_MAX_RES_PATH_LENGTH];
4500
4501 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4502 res = sdev->hostdata;
4503 if (res) {
4504 if (ipr_is_af_dasd_device(res))
4505 sdev->type = TYPE_RAID;
4506 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4507 sdev->scsi_level = 4;
4508 sdev->no_uld_attach = 1;
4509 }
4510 if (ipr_is_vset_device(res)) {
4511 blk_queue_rq_timeout(sdev->request_queue,
4512 IPR_VSET_RW_TIMEOUT);
4513 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4514 }
4515 if (ipr_is_gata(res) && res->sata_port)
4516 ap = res->sata_port->ap;
4517 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4518
4519 if (ap) {
4520 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
4521 ata_sas_slave_configure(sdev, ap);
4522 } else
4523 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4524 if (ioa_cfg->sis64)
4525 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4526 ipr_format_res_path(res->res_path, buffer,
4527 sizeof(buffer)));
4528 return 0;
4529 }
4530 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4531 return 0;
4532 }
4533
4534 /**
4535 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4536 * @sdev: scsi device struct
4537 *
4538 * This function initializes an ATA port so that future commands
4539 * sent through queuecommand will work.
4540 *
4541 * Return value:
4542 * 0 on success
4543 **/
4544 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4545 {
4546 struct ipr_sata_port *sata_port = NULL;
4547 int rc = -ENXIO;
4548
4549 ENTER;
4550 if (sdev->sdev_target)
4551 sata_port = sdev->sdev_target->hostdata;
4552 if (sata_port)
4553 rc = ata_sas_port_init(sata_port->ap);
4554 if (rc)
4555 ipr_slave_destroy(sdev);
4556
4557 LEAVE;
4558 return rc;
4559 }
4560
4561 /**
4562 * ipr_slave_alloc - Prepare for commands to a device.
4563 * @sdev: scsi device struct
4564 *
4565 * This function saves a pointer to the resource entry
4566 * in the scsi device struct if the device exists. We
4567 * can then use this pointer in ipr_queuecommand when
4568 * handling new commands.
4569 *
4570 * Return value:
4571 * 0 on success / -ENXIO if device does not exist
4572 **/
4573 static int ipr_slave_alloc(struct scsi_device *sdev)
4574 {
4575 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4576 struct ipr_resource_entry *res;
4577 unsigned long lock_flags;
4578 int rc = -ENXIO;
4579
4580 sdev->hostdata = NULL;
4581
4582 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4583
4584 res = ipr_find_sdev(sdev);
4585 if (res) {
4586 res->sdev = sdev;
4587 res->add_to_ml = 0;
4588 res->in_erp = 0;
4589 sdev->hostdata = res;
4590 if (!ipr_is_naca_model(res))
4591 res->needs_sync_complete = 1;
4592 rc = 0;
4593 if (ipr_is_gata(res)) {
4594 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4595 return ipr_ata_slave_alloc(sdev);
4596 }
4597 }
4598
4599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4600
4601 return rc;
4602 }
4603
4604 /**
4605 * ipr_eh_host_reset - Reset the host adapter
4606 * @scsi_cmd: scsi command struct
4607 *
4608 * Return value:
4609 * SUCCESS / FAILED
4610 **/
4611 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
4612 {
4613 struct ipr_ioa_cfg *ioa_cfg;
4614 int rc;
4615
4616 ENTER;
4617 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4618
4619 if (!ioa_cfg->in_reset_reload) {
4620 dev_err(&ioa_cfg->pdev->dev,
4621 "Adapter being reset as a result of error recovery.\n");
4622
4623 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4624 ioa_cfg->sdt_state = GET_DUMP;
4625 }
4626
4627 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4628
4629 LEAVE;
4630 return rc;
4631 }
4632
4633 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
4634 {
4635 int rc;
4636
4637 spin_lock_irq(cmd->device->host->host_lock);
4638 rc = __ipr_eh_host_reset(cmd);
4639 spin_unlock_irq(cmd->device->host->host_lock);
4640
4641 return rc;
4642 }
4643
4644 /**
4645 * ipr_device_reset - Reset the device
4646 * @ioa_cfg: ioa config struct
4647 * @res: resource entry struct
4648 *
4649 * This function issues a device reset to the affected device.
4650 * If the device is a SCSI device, a LUN reset will be sent
4651 * to the device first. If that does not work, a target reset
4652 * will be sent. If the device is a SATA device, a PHY reset will
4653 * be sent.
4654 *
4655 * Return value:
4656 * 0 on success / non-zero on failure
4657 **/
4658 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4659 struct ipr_resource_entry *res)
4660 {
4661 struct ipr_cmnd *ipr_cmd;
4662 struct ipr_ioarcb *ioarcb;
4663 struct ipr_cmd_pkt *cmd_pkt;
4664 struct ipr_ioarcb_ata_regs *regs;
4665 u32 ioasc;
4666
4667 ENTER;
4668 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4669 ioarcb = &ipr_cmd->ioarcb;
4670 cmd_pkt = &ioarcb->cmd_pkt;
4671
4672 if (ipr_cmd->ioa_cfg->sis64) {
4673 regs = &ipr_cmd->i.ata_ioadl.regs;
4674 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4675 } else
4676 regs = &ioarcb->u.add_data.u.regs;
4677
4678 ioarcb->res_handle = res->res_handle;
4679 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4680 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4681 if (ipr_is_gata(res)) {
4682 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
4683 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
4684 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4685 }
4686
4687 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4688 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4689 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4690 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4691 if (ipr_cmd->ioa_cfg->sis64)
4692 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4693 sizeof(struct ipr_ioasa_gata));
4694 else
4695 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4696 sizeof(struct ipr_ioasa_gata));
4697 }
4698
4699 LEAVE;
4700 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
4701 }
4702
4703 /**
4704 * ipr_sata_reset - Reset the SATA port
4705 * @link: SATA link to reset
4706 * @classes: class of the attached device
4707 *
4708 * This function issues a SATA phy reset to the affected ATA link.
4709 *
4710 * Return value:
4711 * 0 on success / non-zero on failure
4712 **/
4713 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
4714 unsigned long deadline)
4715 {
4716 struct ipr_sata_port *sata_port = link->ap->private_data;
4717 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4718 struct ipr_resource_entry *res;
4719 unsigned long lock_flags = 0;
4720 int rc = -ENXIO;
4721
4722 ENTER;
4723 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4724 while(ioa_cfg->in_reset_reload) {
4725 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4726 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4727 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4728 }
4729
4730 res = sata_port->res;
4731 if (res) {
4732 rc = ipr_device_reset(ioa_cfg, res);
4733 *classes = res->ata_class;
4734 }
4735
4736 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4737 LEAVE;
4738 return rc;
4739 }
4740
4741 /**
4742 * ipr_eh_dev_reset - Reset the device
4743 * @scsi_cmd: scsi command struct
4744 *
4745 * This function issues a device reset to the affected device.
4746 * A LUN reset will be sent to the device first. If that does
4747 * not work, a target reset will be sent.
4748 *
4749 * Return value:
4750 * SUCCESS / FAILED
4751 **/
4752 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
4753 {
4754 struct ipr_cmnd *ipr_cmd;
4755 struct ipr_ioa_cfg *ioa_cfg;
4756 struct ipr_resource_entry *res;
4757 struct ata_port *ap;
4758 int rc = 0;
4759
4760 ENTER;
4761 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4762 res = scsi_cmd->device->hostdata;
4763
4764 if (!res)
4765 return FAILED;
4766
4767 /*
4768 * If we are currently going through reset/reload, return failed. This will force the
4769 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4770 * reset to complete
4771 */
4772 if (ioa_cfg->in_reset_reload)
4773 return FAILED;
4774 if (ioa_cfg->ioa_is_dead)
4775 return FAILED;
4776
4777 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4778 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4779 if (ipr_cmd->scsi_cmd)
4780 ipr_cmd->done = ipr_scsi_eh_done;
4781 if (ipr_cmd->qc)
4782 ipr_cmd->done = ipr_sata_eh_done;
4783 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4784 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4785 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4786 }
4787 }
4788 }
4789
4790 res->resetting_device = 1;
4791 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
4792
4793 if (ipr_is_gata(res) && res->sata_port) {
4794 ap = res->sata_port->ap;
4795 spin_unlock_irq(scsi_cmd->device->host->host_lock);
4796 ata_std_error_handler(ap);
4797 spin_lock_irq(scsi_cmd->device->host->host_lock);
4798
4799 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4800 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4801 rc = -EIO;
4802 break;
4803 }
4804 }
4805 } else
4806 rc = ipr_device_reset(ioa_cfg, res);
4807 res->resetting_device = 0;
4808
4809 LEAVE;
4810 return (rc ? FAILED : SUCCESS);
4811 }
4812
4813 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
4814 {
4815 int rc;
4816
4817 spin_lock_irq(cmd->device->host->host_lock);
4818 rc = __ipr_eh_dev_reset(cmd);
4819 spin_unlock_irq(cmd->device->host->host_lock);
4820
4821 return rc;
4822 }
4823
4824 /**
4825 * ipr_bus_reset_done - Op done function for bus reset.
4826 * @ipr_cmd: ipr command struct
4827 *
4828 * This function is the op done function for a bus reset
4829 *
4830 * Return value:
4831 * none
4832 **/
4833 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
4834 {
4835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4836 struct ipr_resource_entry *res;
4837
4838 ENTER;
4839 if (!ioa_cfg->sis64)
4840 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4841 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
4842 scsi_report_bus_reset(ioa_cfg->host, res->bus);
4843 break;
4844 }
4845 }
4846
4847 /*
4848 * If abort has not completed, indicate the reset has, else call the
4849 * abort's done function to wake the sleeping eh thread
4850 */
4851 if (ipr_cmd->sibling->sibling)
4852 ipr_cmd->sibling->sibling = NULL;
4853 else
4854 ipr_cmd->sibling->done(ipr_cmd->sibling);
4855
4856 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4857 LEAVE;
4858 }
4859
4860 /**
4861 * ipr_abort_timeout - An abort task has timed out
4862 * @ipr_cmd: ipr command struct
4863 *
4864 * This function handles when an abort task times out. If this
4865 * happens we issue a bus reset since we have resources tied
4866 * up that must be freed before returning to the midlayer.
4867 *
4868 * Return value:
4869 * none
4870 **/
4871 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4872 {
4873 struct ipr_cmnd *reset_cmd;
4874 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4875 struct ipr_cmd_pkt *cmd_pkt;
4876 unsigned long lock_flags = 0;
4877
4878 ENTER;
4879 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4880 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4881 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4882 return;
4883 }
4884
4885 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4886 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4887 ipr_cmd->sibling = reset_cmd;
4888 reset_cmd->sibling = ipr_cmd;
4889 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4890 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4891 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4892 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4893 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4894
4895 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4896 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4897 LEAVE;
4898 }
4899
4900 /**
4901 * ipr_cancel_op - Cancel specified op
4902 * @scsi_cmd: scsi command struct
4903 *
4904 * This function cancels specified op.
4905 *
4906 * Return value:
4907 * SUCCESS / FAILED
4908 **/
4909 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4910 {
4911 struct ipr_cmnd *ipr_cmd;
4912 struct ipr_ioa_cfg *ioa_cfg;
4913 struct ipr_resource_entry *res;
4914 struct ipr_cmd_pkt *cmd_pkt;
4915 u32 ioasc, int_reg;
4916 int op_found = 0;
4917
4918 ENTER;
4919 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4920 res = scsi_cmd->device->hostdata;
4921
4922 /* If we are currently going through reset/reload, return failed.
4923 * This will force the mid-layer to call ipr_eh_host_reset,
4924 * which will then go to sleep and wait for the reset to complete
4925 */
4926 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4927 return FAILED;
4928 if (!res)
4929 return FAILED;
4930
4931 /*
4932 * If we are aborting a timed out op, chances are that the timeout was caused
4933 * by a still not detected EEH error. In such cases, reading a register will
4934 * trigger the EEH recovery infrastructure.
4935 */
4936 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4937
4938 if (!ipr_is_gscsi(res))
4939 return FAILED;
4940
4941 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4942 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4943 ipr_cmd->done = ipr_scsi_eh_done;
4944 op_found = 1;
4945 break;
4946 }
4947 }
4948
4949 if (!op_found)
4950 return SUCCESS;
4951
4952 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4953 ipr_cmd->ioarcb.res_handle = res->res_handle;
4954 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4955 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4956 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4957 ipr_cmd->u.sdev = scsi_cmd->device;
4958
4959 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4960 scsi_cmd->cmnd[0]);
4961 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4962 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4963
4964 /*
4965 * If the abort task timed out and we sent a bus reset, we will get
4966 * one the following responses to the abort
4967 */
4968 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4969 ioasc = 0;
4970 ipr_trace;
4971 }
4972
4973 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4974 if (!ipr_is_naca_model(res))
4975 res->needs_sync_complete = 1;
4976
4977 LEAVE;
4978 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4979 }
4980
4981 /**
4982 * ipr_eh_abort - Abort a single op
4983 * @scsi_cmd: scsi command struct
4984 *
4985 * Return value:
4986 * SUCCESS / FAILED
4987 **/
4988 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4989 {
4990 unsigned long flags;
4991 int rc;
4992
4993 ENTER;
4994
4995 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4996 rc = ipr_cancel_op(scsi_cmd);
4997 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4998
4999 LEAVE;
5000 return rc;
5001 }
5002
5003 /**
5004 * ipr_handle_other_interrupt - Handle "other" interrupts
5005 * @ioa_cfg: ioa config struct
5006 * @int_reg: interrupt register
5007 *
5008 * Return value:
5009 * IRQ_NONE / IRQ_HANDLED
5010 **/
5011 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5012 u32 int_reg)
5013 {
5014 irqreturn_t rc = IRQ_HANDLED;
5015 u32 int_mask_reg;
5016
5017 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5018 int_reg &= ~int_mask_reg;
5019
5020 /* If an interrupt on the adapter did not occur, ignore it.
5021 * Or in the case of SIS 64, check for a stage change interrupt.
5022 */
5023 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5024 if (ioa_cfg->sis64) {
5025 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5026 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5027 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5028
5029 /* clear stage change */
5030 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5031 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5032 list_del(&ioa_cfg->reset_cmd->queue);
5033 del_timer(&ioa_cfg->reset_cmd->timer);
5034 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5035 return IRQ_HANDLED;
5036 }
5037 }
5038
5039 return IRQ_NONE;
5040 }
5041
5042 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5043 /* Mask the interrupt */
5044 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5045
5046 /* Clear the interrupt */
5047 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
5048 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5049
5050 list_del(&ioa_cfg->reset_cmd->queue);
5051 del_timer(&ioa_cfg->reset_cmd->timer);
5052 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5053 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5054 if (ioa_cfg->clear_isr) {
5055 if (ipr_debug && printk_ratelimit())
5056 dev_err(&ioa_cfg->pdev->dev,
5057 "Spurious interrupt detected. 0x%08X\n", int_reg);
5058 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5059 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5060 return IRQ_NONE;
5061 }
5062 } else {
5063 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5064 ioa_cfg->ioa_unit_checked = 1;
5065 else
5066 dev_err(&ioa_cfg->pdev->dev,
5067 "Permanent IOA failure. 0x%08X\n", int_reg);
5068
5069 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5070 ioa_cfg->sdt_state = GET_DUMP;
5071
5072 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5073 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5074 }
5075
5076 return rc;
5077 }
5078
5079 /**
5080 * ipr_isr_eh - Interrupt service routine error handler
5081 * @ioa_cfg: ioa config struct
5082 * @msg: message to log
5083 *
5084 * Return value:
5085 * none
5086 **/
5087 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
5088 {
5089 ioa_cfg->errors_logged++;
5090 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
5091
5092 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5093 ioa_cfg->sdt_state = GET_DUMP;
5094
5095 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5096 }
5097
5098 /**
5099 * ipr_isr - Interrupt service routine
5100 * @irq: irq number
5101 * @devp: pointer to ioa config struct
5102 *
5103 * Return value:
5104 * IRQ_NONE / IRQ_HANDLED
5105 **/
5106 static irqreturn_t ipr_isr(int irq, void *devp)
5107 {
5108 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
5109 unsigned long lock_flags = 0;
5110 u32 int_reg = 0;
5111 u32 ioasc;
5112 u16 cmd_index;
5113 int num_hrrq = 0;
5114 int irq_none = 0;
5115 struct ipr_cmnd *ipr_cmd;
5116 irqreturn_t rc = IRQ_NONE;
5117
5118 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5119
5120 /* If interrupts are disabled, ignore the interrupt */
5121 if (!ioa_cfg->allow_interrupts) {
5122 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5123 return IRQ_NONE;
5124 }
5125
5126 while (1) {
5127 ipr_cmd = NULL;
5128
5129 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5130 ioa_cfg->toggle_bit) {
5131
5132 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
5133 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5134
5135 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
5136 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
5137 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5138 return IRQ_HANDLED;
5139 }
5140
5141 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5142
5143 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5144
5145 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5146
5147 list_del(&ipr_cmd->queue);
5148 del_timer(&ipr_cmd->timer);
5149 ipr_cmd->done(ipr_cmd);
5150
5151 rc = IRQ_HANDLED;
5152
5153 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
5154 ioa_cfg->hrrq_curr++;
5155 } else {
5156 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5157 ioa_cfg->toggle_bit ^= 1u;
5158 }
5159 }
5160
5161 if (ipr_cmd && !ioa_cfg->clear_isr)
5162 break;
5163
5164 if (ipr_cmd != NULL) {
5165 /* Clear the PCI interrupt */
5166 num_hrrq = 0;
5167 do {
5168 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5169 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5170 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5171 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5172
5173 } else if (rc == IRQ_NONE && irq_none == 0) {
5174 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5175 irq_none++;
5176 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5177 int_reg & IPR_PCII_HRRQ_UPDATED) {
5178 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
5179 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5180 return IRQ_HANDLED;
5181 } else
5182 break;
5183 }
5184
5185 if (unlikely(rc == IRQ_NONE))
5186 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5187
5188 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5189 return rc;
5190 }
5191
5192 /**
5193 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5194 * @ioa_cfg: ioa config struct
5195 * @ipr_cmd: ipr command struct
5196 *
5197 * Return value:
5198 * 0 on success / -1 on failure
5199 **/
5200 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5201 struct ipr_cmnd *ipr_cmd)
5202 {
5203 int i, nseg;
5204 struct scatterlist *sg;
5205 u32 length;
5206 u32 ioadl_flags = 0;
5207 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5208 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5209 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5210
5211 length = scsi_bufflen(scsi_cmd);
5212 if (!length)
5213 return 0;
5214
5215 nseg = scsi_dma_map(scsi_cmd);
5216 if (nseg < 0) {
5217 if (printk_ratelimit())
5218 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5219 return -1;
5220 }
5221
5222 ipr_cmd->dma_use_sg = nseg;
5223
5224 ioarcb->data_transfer_length = cpu_to_be32(length);
5225 ioarcb->ioadl_len =
5226 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5227
5228 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5229 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5230 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5231 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5232 ioadl_flags = IPR_IOADL_FLAGS_READ;
5233
5234 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5235 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5236 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5237 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5238 }
5239
5240 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5241 return 0;
5242 }
5243
5244 /**
5245 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5246 * @ioa_cfg: ioa config struct
5247 * @ipr_cmd: ipr command struct
5248 *
5249 * Return value:
5250 * 0 on success / -1 on failure
5251 **/
5252 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5253 struct ipr_cmnd *ipr_cmd)
5254 {
5255 int i, nseg;
5256 struct scatterlist *sg;
5257 u32 length;
5258 u32 ioadl_flags = 0;
5259 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5260 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5261 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5262
5263 length = scsi_bufflen(scsi_cmd);
5264 if (!length)
5265 return 0;
5266
5267 nseg = scsi_dma_map(scsi_cmd);
5268 if (nseg < 0) {
5269 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5270 return -1;
5271 }
5272
5273 ipr_cmd->dma_use_sg = nseg;
5274
5275 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5276 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5277 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5278 ioarcb->data_transfer_length = cpu_to_be32(length);
5279 ioarcb->ioadl_len =
5280 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5281 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5282 ioadl_flags = IPR_IOADL_FLAGS_READ;
5283 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5284 ioarcb->read_ioadl_len =
5285 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5286 }
5287
5288 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5289 ioadl = ioarcb->u.add_data.u.ioadl;
5290 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5291 offsetof(struct ipr_ioarcb, u.add_data));
5292 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5293 }
5294
5295 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5296 ioadl[i].flags_and_data_len =
5297 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5298 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5299 }
5300
5301 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5302 return 0;
5303 }
5304
5305 /**
5306 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5307 * @scsi_cmd: scsi command struct
5308 *
5309 * Return value:
5310 * task attributes
5311 **/
5312 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5313 {
5314 u8 tag[2];
5315 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5316
5317 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5318 switch (tag[0]) {
5319 case MSG_SIMPLE_TAG:
5320 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5321 break;
5322 case MSG_HEAD_TAG:
5323 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5324 break;
5325 case MSG_ORDERED_TAG:
5326 rc = IPR_FLAGS_LO_ORDERED_TASK;
5327 break;
5328 };
5329 }
5330
5331 return rc;
5332 }
5333
5334 /**
5335 * ipr_erp_done - Process completion of ERP for a device
5336 * @ipr_cmd: ipr command struct
5337 *
5338 * This function copies the sense buffer into the scsi_cmd
5339 * struct and pushes the scsi_done function.
5340 *
5341 * Return value:
5342 * nothing
5343 **/
5344 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5345 {
5346 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5347 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5348 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5349 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5350
5351 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5352 scsi_cmd->result |= (DID_ERROR << 16);
5353 scmd_printk(KERN_ERR, scsi_cmd,
5354 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5355 } else {
5356 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5357 SCSI_SENSE_BUFFERSIZE);
5358 }
5359
5360 if (res) {
5361 if (!ipr_is_naca_model(res))
5362 res->needs_sync_complete = 1;
5363 res->in_erp = 0;
5364 }
5365 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5366 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5367 scsi_cmd->scsi_done(scsi_cmd);
5368 }
5369
5370 /**
5371 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5372 * @ipr_cmd: ipr command struct
5373 *
5374 * Return value:
5375 * none
5376 **/
5377 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5378 {
5379 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5380 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5381 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5382
5383 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5384 ioarcb->data_transfer_length = 0;
5385 ioarcb->read_data_transfer_length = 0;
5386 ioarcb->ioadl_len = 0;
5387 ioarcb->read_ioadl_len = 0;
5388 ioasa->hdr.ioasc = 0;
5389 ioasa->hdr.residual_data_len = 0;
5390
5391 if (ipr_cmd->ioa_cfg->sis64)
5392 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5393 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5394 else {
5395 ioarcb->write_ioadl_addr =
5396 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5397 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5398 }
5399 }
5400
5401 /**
5402 * ipr_erp_request_sense - Send request sense to a device
5403 * @ipr_cmd: ipr command struct
5404 *
5405 * This function sends a request sense to a device as a result
5406 * of a check condition.
5407 *
5408 * Return value:
5409 * nothing
5410 **/
5411 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5412 {
5413 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5414 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5415
5416 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5417 ipr_erp_done(ipr_cmd);
5418 return;
5419 }
5420
5421 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5422
5423 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5424 cmd_pkt->cdb[0] = REQUEST_SENSE;
5425 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5426 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5427 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5428 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5429
5430 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5431 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5432
5433 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5434 IPR_REQUEST_SENSE_TIMEOUT * 2);
5435 }
5436
5437 /**
5438 * ipr_erp_cancel_all - Send cancel all to a device
5439 * @ipr_cmd: ipr command struct
5440 *
5441 * This function sends a cancel all to a device to clear the
5442 * queue. If we are running TCQ on the device, QERR is set to 1,
5443 * which means all outstanding ops have been dropped on the floor.
5444 * Cancel all will return them to us.
5445 *
5446 * Return value:
5447 * nothing
5448 **/
5449 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5450 {
5451 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5452 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5453 struct ipr_cmd_pkt *cmd_pkt;
5454
5455 res->in_erp = 1;
5456
5457 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5458
5459 if (!scsi_get_tag_type(scsi_cmd->device)) {
5460 ipr_erp_request_sense(ipr_cmd);
5461 return;
5462 }
5463
5464 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5465 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5466 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5467
5468 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5469 IPR_CANCEL_ALL_TIMEOUT);
5470 }
5471
5472 /**
5473 * ipr_dump_ioasa - Dump contents of IOASA
5474 * @ioa_cfg: ioa config struct
5475 * @ipr_cmd: ipr command struct
5476 * @res: resource entry struct
5477 *
5478 * This function is invoked by the interrupt handler when ops
5479 * fail. It will log the IOASA if appropriate. Only called
5480 * for GPDD ops.
5481 *
5482 * Return value:
5483 * none
5484 **/
5485 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5486 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5487 {
5488 int i;
5489 u16 data_len;
5490 u32 ioasc, fd_ioasc;
5491 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5492 __be32 *ioasa_data = (__be32 *)ioasa;
5493 int error_index;
5494
5495 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5496 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5497
5498 if (0 == ioasc)
5499 return;
5500
5501 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5502 return;
5503
5504 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5505 error_index = ipr_get_error(fd_ioasc);
5506 else
5507 error_index = ipr_get_error(ioasc);
5508
5509 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5510 /* Don't log an error if the IOA already logged one */
5511 if (ioasa->hdr.ilid != 0)
5512 return;
5513
5514 if (!ipr_is_gscsi(res))
5515 return;
5516
5517 if (ipr_error_table[error_index].log_ioasa == 0)
5518 return;
5519 }
5520
5521 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5522
5523 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5524 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5525 data_len = sizeof(struct ipr_ioasa64);
5526 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
5527 data_len = sizeof(struct ipr_ioasa);
5528
5529 ipr_err("IOASA Dump:\n");
5530
5531 for (i = 0; i < data_len / 4; i += 4) {
5532 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5533 be32_to_cpu(ioasa_data[i]),
5534 be32_to_cpu(ioasa_data[i+1]),
5535 be32_to_cpu(ioasa_data[i+2]),
5536 be32_to_cpu(ioasa_data[i+3]));
5537 }
5538 }
5539
5540 /**
5541 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5542 * @ioasa: IOASA
5543 * @sense_buf: sense data buffer
5544 *
5545 * Return value:
5546 * none
5547 **/
5548 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5549 {
5550 u32 failing_lba;
5551 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5552 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5553 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5554 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
5555
5556 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5557
5558 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5559 return;
5560
5561 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5562
5563 if (ipr_is_vset_device(res) &&
5564 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5565 ioasa->u.vset.failing_lba_hi != 0) {
5566 sense_buf[0] = 0x72;
5567 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5568 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5569 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5570
5571 sense_buf[7] = 12;
5572 sense_buf[8] = 0;
5573 sense_buf[9] = 0x0A;
5574 sense_buf[10] = 0x80;
5575
5576 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5577
5578 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5579 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5580 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5581 sense_buf[15] = failing_lba & 0x000000ff;
5582
5583 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5584
5585 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5586 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5587 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5588 sense_buf[19] = failing_lba & 0x000000ff;
5589 } else {
5590 sense_buf[0] = 0x70;
5591 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5592 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5593 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5594
5595 /* Illegal request */
5596 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
5597 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
5598 sense_buf[7] = 10; /* additional length */
5599
5600 /* IOARCB was in error */
5601 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5602 sense_buf[15] = 0xC0;
5603 else /* Parameter data was invalid */
5604 sense_buf[15] = 0x80;
5605
5606 sense_buf[16] =
5607 ((IPR_FIELD_POINTER_MASK &
5608 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
5609 sense_buf[17] =
5610 (IPR_FIELD_POINTER_MASK &
5611 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
5612 } else {
5613 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5614 if (ipr_is_vset_device(res))
5615 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5616 else
5617 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5618
5619 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5620 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5621 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5622 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5623 sense_buf[6] = failing_lba & 0x000000ff;
5624 }
5625
5626 sense_buf[7] = 6; /* additional length */
5627 }
5628 }
5629 }
5630
5631 /**
5632 * ipr_get_autosense - Copy autosense data to sense buffer
5633 * @ipr_cmd: ipr command struct
5634 *
5635 * This function copies the autosense buffer to the buffer
5636 * in the scsi_cmd, if there is autosense available.
5637 *
5638 * Return value:
5639 * 1 if autosense was available / 0 if not
5640 **/
5641 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5642 {
5643 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5644 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
5645
5646 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
5647 return 0;
5648
5649 if (ipr_cmd->ioa_cfg->sis64)
5650 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
5651 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
5652 SCSI_SENSE_BUFFERSIZE));
5653 else
5654 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5655 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5656 SCSI_SENSE_BUFFERSIZE));
5657 return 1;
5658 }
5659
5660 /**
5661 * ipr_erp_start - Process an error response for a SCSI op
5662 * @ioa_cfg: ioa config struct
5663 * @ipr_cmd: ipr command struct
5664 *
5665 * This function determines whether or not to initiate ERP
5666 * on the affected device.
5667 *
5668 * Return value:
5669 * nothing
5670 **/
5671 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5672 struct ipr_cmnd *ipr_cmd)
5673 {
5674 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5675 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5676 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5677 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
5678
5679 if (!res) {
5680 ipr_scsi_eh_done(ipr_cmd);
5681 return;
5682 }
5683
5684 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
5685 ipr_gen_sense(ipr_cmd);
5686
5687 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5688
5689 switch (masked_ioasc) {
5690 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
5691 if (ipr_is_naca_model(res))
5692 scsi_cmd->result |= (DID_ABORT << 16);
5693 else
5694 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5695 break;
5696 case IPR_IOASC_IR_RESOURCE_HANDLE:
5697 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
5698 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5699 break;
5700 case IPR_IOASC_HW_SEL_TIMEOUT:
5701 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5702 if (!ipr_is_naca_model(res))
5703 res->needs_sync_complete = 1;
5704 break;
5705 case IPR_IOASC_SYNC_REQUIRED:
5706 if (!res->in_erp)
5707 res->needs_sync_complete = 1;
5708 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5709 break;
5710 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
5711 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
5712 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5713 break;
5714 case IPR_IOASC_BUS_WAS_RESET:
5715 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5716 /*
5717 * Report the bus reset and ask for a retry. The device
5718 * will give CC/UA the next command.
5719 */
5720 if (!res->resetting_device)
5721 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
5722 scsi_cmd->result |= (DID_ERROR << 16);
5723 if (!ipr_is_naca_model(res))
5724 res->needs_sync_complete = 1;
5725 break;
5726 case IPR_IOASC_HW_DEV_BUS_STATUS:
5727 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
5728 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
5729 if (!ipr_get_autosense(ipr_cmd)) {
5730 if (!ipr_is_naca_model(res)) {
5731 ipr_erp_cancel_all(ipr_cmd);
5732 return;
5733 }
5734 }
5735 }
5736 if (!ipr_is_naca_model(res))
5737 res->needs_sync_complete = 1;
5738 break;
5739 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
5740 break;
5741 default:
5742 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5743 scsi_cmd->result |= (DID_ERROR << 16);
5744 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
5745 res->needs_sync_complete = 1;
5746 break;
5747 }
5748
5749 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5750 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5751 scsi_cmd->scsi_done(scsi_cmd);
5752 }
5753
5754 /**
5755 * ipr_scsi_done - mid-layer done function
5756 * @ipr_cmd: ipr command struct
5757 *
5758 * This function is invoked by the interrupt handler for
5759 * ops generated by the SCSI mid-layer
5760 *
5761 * Return value:
5762 * none
5763 **/
5764 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
5765 {
5766 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5767 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5768 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5769
5770 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
5771
5772 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
5773 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5774 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5775 scsi_cmd->scsi_done(scsi_cmd);
5776 } else
5777 ipr_erp_start(ioa_cfg, ipr_cmd);
5778 }
5779
5780 /**
5781 * ipr_queuecommand - Queue a mid-layer request
5782 * @scsi_cmd: scsi command struct
5783 * @done: done function
5784 *
5785 * This function queues a request generated by the mid-layer.
5786 *
5787 * Return value:
5788 * 0 on success
5789 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
5790 * SCSI_MLQUEUE_HOST_BUSY if host is busy
5791 **/
5792 static int ipr_queuecommand_lck(struct scsi_cmnd *scsi_cmd,
5793 void (*done) (struct scsi_cmnd *))
5794 {
5795 struct ipr_ioa_cfg *ioa_cfg;
5796 struct ipr_resource_entry *res;
5797 struct ipr_ioarcb *ioarcb;
5798 struct ipr_cmnd *ipr_cmd;
5799 int rc = 0;
5800
5801 scsi_cmd->scsi_done = done;
5802 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5803 res = scsi_cmd->device->hostdata;
5804 scsi_cmd->result = (DID_OK << 16);
5805
5806 /*
5807 * We are currently blocking all devices due to a host reset
5808 * We have told the host to stop giving us new requests, but
5809 * ERP ops don't count. FIXME
5810 */
5811 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
5812 return SCSI_MLQUEUE_HOST_BUSY;
5813
5814 /*
5815 * FIXME - Create scsi_set_host_offline interface
5816 * and the ioa_is_dead check can be removed
5817 */
5818 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
5819 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
5820 scsi_cmd->result = (DID_NO_CONNECT << 16);
5821 scsi_cmd->scsi_done(scsi_cmd);
5822 return 0;
5823 }
5824
5825 if (ipr_is_gata(res) && res->sata_port)
5826 return ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
5827
5828 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5829 ioarcb = &ipr_cmd->ioarcb;
5830 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5831
5832 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
5833 ipr_cmd->scsi_cmd = scsi_cmd;
5834 ioarcb->res_handle = res->res_handle;
5835 ipr_cmd->done = ipr_scsi_done;
5836 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
5837
5838 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
5839 if (scsi_cmd->underflow == 0)
5840 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5841
5842 if (res->needs_sync_complete) {
5843 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
5844 res->needs_sync_complete = 0;
5845 }
5846
5847 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5848 if (ipr_is_gscsi(res))
5849 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
5850 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
5851 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
5852 }
5853
5854 if (scsi_cmd->cmnd[0] >= 0xC0 &&
5855 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
5856 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5857
5858 if (likely(rc == 0)) {
5859 if (ioa_cfg->sis64)
5860 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
5861 else
5862 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
5863 }
5864
5865 if (unlikely(rc != 0)) {
5866 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5867 return SCSI_MLQUEUE_HOST_BUSY;
5868 }
5869
5870 ipr_send_command(ipr_cmd);
5871 return 0;
5872 }
5873
5874 static DEF_SCSI_QCMD(ipr_queuecommand)
5875
5876 /**
5877 * ipr_ioctl - IOCTL handler
5878 * @sdev: scsi device struct
5879 * @cmd: IOCTL cmd
5880 * @arg: IOCTL arg
5881 *
5882 * Return value:
5883 * 0 on success / other on failure
5884 **/
5885 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5886 {
5887 struct ipr_resource_entry *res;
5888
5889 res = (struct ipr_resource_entry *)sdev->hostdata;
5890 if (res && ipr_is_gata(res)) {
5891 if (cmd == HDIO_GET_IDENTITY)
5892 return -ENOTTY;
5893 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
5894 }
5895
5896 return -EINVAL;
5897 }
5898
5899 /**
5900 * ipr_info - Get information about the card/driver
5901 * @scsi_host: scsi host struct
5902 *
5903 * Return value:
5904 * pointer to buffer with description string
5905 **/
5906 static const char * ipr_ioa_info(struct Scsi_Host *host)
5907 {
5908 static char buffer[512];
5909 struct ipr_ioa_cfg *ioa_cfg;
5910 unsigned long lock_flags = 0;
5911
5912 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
5913
5914 spin_lock_irqsave(host->host_lock, lock_flags);
5915 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
5916 spin_unlock_irqrestore(host->host_lock, lock_flags);
5917
5918 return buffer;
5919 }
5920
5921 static struct scsi_host_template driver_template = {
5922 .module = THIS_MODULE,
5923 .name = "IPR",
5924 .info = ipr_ioa_info,
5925 .ioctl = ipr_ioctl,
5926 .queuecommand = ipr_queuecommand,
5927 .eh_abort_handler = ipr_eh_abort,
5928 .eh_device_reset_handler = ipr_eh_dev_reset,
5929 .eh_host_reset_handler = ipr_eh_host_reset,
5930 .slave_alloc = ipr_slave_alloc,
5931 .slave_configure = ipr_slave_configure,
5932 .slave_destroy = ipr_slave_destroy,
5933 .target_alloc = ipr_target_alloc,
5934 .target_destroy = ipr_target_destroy,
5935 .change_queue_depth = ipr_change_queue_depth,
5936 .change_queue_type = ipr_change_queue_type,
5937 .bios_param = ipr_biosparam,
5938 .can_queue = IPR_MAX_COMMANDS,
5939 .this_id = -1,
5940 .sg_tablesize = IPR_MAX_SGLIST,
5941 .max_sectors = IPR_IOA_MAX_SECTORS,
5942 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5943 .use_clustering = ENABLE_CLUSTERING,
5944 .shost_attrs = ipr_ioa_attrs,
5945 .sdev_attrs = ipr_dev_attrs,
5946 .proc_name = IPR_NAME
5947 };
5948
5949 /**
5950 * ipr_ata_phy_reset - libata phy_reset handler
5951 * @ap: ata port to reset
5952 *
5953 **/
5954 static void ipr_ata_phy_reset(struct ata_port *ap)
5955 {
5956 unsigned long flags;
5957 struct ipr_sata_port *sata_port = ap->private_data;
5958 struct ipr_resource_entry *res = sata_port->res;
5959 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5960 int rc;
5961
5962 ENTER;
5963 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5964 while(ioa_cfg->in_reset_reload) {
5965 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5966 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5967 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5968 }
5969
5970 if (!ioa_cfg->allow_cmds)
5971 goto out_unlock;
5972
5973 rc = ipr_device_reset(ioa_cfg, res);
5974
5975 if (rc) {
5976 ap->link.device[0].class = ATA_DEV_NONE;
5977 goto out_unlock;
5978 }
5979
5980 ap->link.device[0].class = res->ata_class;
5981 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
5982 ap->link.device[0].class = ATA_DEV_NONE;
5983
5984 out_unlock:
5985 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5986 LEAVE;
5987 }
5988
5989 /**
5990 * ipr_ata_post_internal - Cleanup after an internal command
5991 * @qc: ATA queued command
5992 *
5993 * Return value:
5994 * none
5995 **/
5996 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5997 {
5998 struct ipr_sata_port *sata_port = qc->ap->private_data;
5999 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6000 struct ipr_cmnd *ipr_cmd;
6001 unsigned long flags;
6002
6003 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6004 while(ioa_cfg->in_reset_reload) {
6005 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6006 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6007 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6008 }
6009
6010 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
6011 if (ipr_cmd->qc == qc) {
6012 ipr_device_reset(ioa_cfg, sata_port->res);
6013 break;
6014 }
6015 }
6016 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6017 }
6018
6019 /**
6020 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6021 * @regs: destination
6022 * @tf: source ATA taskfile
6023 *
6024 * Return value:
6025 * none
6026 **/
6027 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6028 struct ata_taskfile *tf)
6029 {
6030 regs->feature = tf->feature;
6031 regs->nsect = tf->nsect;
6032 regs->lbal = tf->lbal;
6033 regs->lbam = tf->lbam;
6034 regs->lbah = tf->lbah;
6035 regs->device = tf->device;
6036 regs->command = tf->command;
6037 regs->hob_feature = tf->hob_feature;
6038 regs->hob_nsect = tf->hob_nsect;
6039 regs->hob_lbal = tf->hob_lbal;
6040 regs->hob_lbam = tf->hob_lbam;
6041 regs->hob_lbah = tf->hob_lbah;
6042 regs->ctl = tf->ctl;
6043 }
6044
6045 /**
6046 * ipr_sata_done - done function for SATA commands
6047 * @ipr_cmd: ipr command struct
6048 *
6049 * This function is invoked by the interrupt handler for
6050 * ops generated by the SCSI mid-layer to SATA devices
6051 *
6052 * Return value:
6053 * none
6054 **/
6055 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6056 {
6057 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6058 struct ata_queued_cmd *qc = ipr_cmd->qc;
6059 struct ipr_sata_port *sata_port = qc->ap->private_data;
6060 struct ipr_resource_entry *res = sata_port->res;
6061 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6062
6063 if (ipr_cmd->ioa_cfg->sis64)
6064 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6065 sizeof(struct ipr_ioasa_gata));
6066 else
6067 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6068 sizeof(struct ipr_ioasa_gata));
6069 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6070
6071 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6072 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6073
6074 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6075 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6076 else
6077 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6078 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6079 ata_qc_complete(qc);
6080 }
6081
6082 /**
6083 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6084 * @ipr_cmd: ipr command struct
6085 * @qc: ATA queued command
6086 *
6087 **/
6088 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6089 struct ata_queued_cmd *qc)
6090 {
6091 u32 ioadl_flags = 0;
6092 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6093 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
6094 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6095 int len = qc->nbytes;
6096 struct scatterlist *sg;
6097 unsigned int si;
6098 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6099
6100 if (len == 0)
6101 return;
6102
6103 if (qc->dma_dir == DMA_TO_DEVICE) {
6104 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6105 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6106 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6107 ioadl_flags = IPR_IOADL_FLAGS_READ;
6108
6109 ioarcb->data_transfer_length = cpu_to_be32(len);
6110 ioarcb->ioadl_len =
6111 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6112 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6113 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
6114
6115 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6116 ioadl64->flags = cpu_to_be32(ioadl_flags);
6117 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6118 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6119
6120 last_ioadl64 = ioadl64;
6121 ioadl64++;
6122 }
6123
6124 if (likely(last_ioadl64))
6125 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6126 }
6127
6128 /**
6129 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6130 * @ipr_cmd: ipr command struct
6131 * @qc: ATA queued command
6132 *
6133 **/
6134 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6135 struct ata_queued_cmd *qc)
6136 {
6137 u32 ioadl_flags = 0;
6138 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6139 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6140 struct ipr_ioadl_desc *last_ioadl = NULL;
6141 int len = qc->nbytes;
6142 struct scatterlist *sg;
6143 unsigned int si;
6144
6145 if (len == 0)
6146 return;
6147
6148 if (qc->dma_dir == DMA_TO_DEVICE) {
6149 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6150 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6151 ioarcb->data_transfer_length = cpu_to_be32(len);
6152 ioarcb->ioadl_len =
6153 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6154 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6155 ioadl_flags = IPR_IOADL_FLAGS_READ;
6156 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6157 ioarcb->read_ioadl_len =
6158 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6159 }
6160
6161 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6162 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6163 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6164
6165 last_ioadl = ioadl;
6166 ioadl++;
6167 }
6168
6169 if (likely(last_ioadl))
6170 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6171 }
6172
6173 /**
6174 * ipr_qc_issue - Issue a SATA qc to a device
6175 * @qc: queued command
6176 *
6177 * Return value:
6178 * 0 if success
6179 **/
6180 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6181 {
6182 struct ata_port *ap = qc->ap;
6183 struct ipr_sata_port *sata_port = ap->private_data;
6184 struct ipr_resource_entry *res = sata_port->res;
6185 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6186 struct ipr_cmnd *ipr_cmd;
6187 struct ipr_ioarcb *ioarcb;
6188 struct ipr_ioarcb_ata_regs *regs;
6189
6190 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
6191 return AC_ERR_SYSTEM;
6192
6193 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6194 ioarcb = &ipr_cmd->ioarcb;
6195
6196 if (ioa_cfg->sis64) {
6197 regs = &ipr_cmd->i.ata_ioadl.regs;
6198 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6199 } else
6200 regs = &ioarcb->u.add_data.u.regs;
6201
6202 memset(regs, 0, sizeof(*regs));
6203 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6204
6205 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6206 ipr_cmd->qc = qc;
6207 ipr_cmd->done = ipr_sata_done;
6208 ipr_cmd->ioarcb.res_handle = res->res_handle;
6209 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6210 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6211 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6212 ipr_cmd->dma_use_sg = qc->n_elem;
6213
6214 if (ioa_cfg->sis64)
6215 ipr_build_ata_ioadl64(ipr_cmd, qc);
6216 else
6217 ipr_build_ata_ioadl(ipr_cmd, qc);
6218
6219 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6220 ipr_copy_sata_tf(regs, &qc->tf);
6221 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6222 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6223
6224 switch (qc->tf.protocol) {
6225 case ATA_PROT_NODATA:
6226 case ATA_PROT_PIO:
6227 break;
6228
6229 case ATA_PROT_DMA:
6230 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6231 break;
6232
6233 case ATAPI_PROT_PIO:
6234 case ATAPI_PROT_NODATA:
6235 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6236 break;
6237
6238 case ATAPI_PROT_DMA:
6239 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6240 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6241 break;
6242
6243 default:
6244 WARN_ON(1);
6245 return AC_ERR_INVALID;
6246 }
6247
6248 ipr_send_command(ipr_cmd);
6249
6250 return 0;
6251 }
6252
6253 /**
6254 * ipr_qc_fill_rtf - Read result TF
6255 * @qc: ATA queued command
6256 *
6257 * Return value:
6258 * true
6259 **/
6260 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6261 {
6262 struct ipr_sata_port *sata_port = qc->ap->private_data;
6263 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6264 struct ata_taskfile *tf = &qc->result_tf;
6265
6266 tf->feature = g->error;
6267 tf->nsect = g->nsect;
6268 tf->lbal = g->lbal;
6269 tf->lbam = g->lbam;
6270 tf->lbah = g->lbah;
6271 tf->device = g->device;
6272 tf->command = g->status;
6273 tf->hob_nsect = g->hob_nsect;
6274 tf->hob_lbal = g->hob_lbal;
6275 tf->hob_lbam = g->hob_lbam;
6276 tf->hob_lbah = g->hob_lbah;
6277 tf->ctl = g->alt_status;
6278
6279 return true;
6280 }
6281
6282 static struct ata_port_operations ipr_sata_ops = {
6283 .phy_reset = ipr_ata_phy_reset,
6284 .hardreset = ipr_sata_reset,
6285 .post_internal_cmd = ipr_ata_post_internal,
6286 .qc_prep = ata_noop_qc_prep,
6287 .qc_issue = ipr_qc_issue,
6288 .qc_fill_rtf = ipr_qc_fill_rtf,
6289 .port_start = ata_sas_port_start,
6290 .port_stop = ata_sas_port_stop
6291 };
6292
6293 static struct ata_port_info sata_port_info = {
6294 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
6295 .pio_mask = ATA_PIO4_ONLY,
6296 .mwdma_mask = ATA_MWDMA2,
6297 .udma_mask = ATA_UDMA6,
6298 .port_ops = &ipr_sata_ops
6299 };
6300
6301 #ifdef CONFIG_PPC_PSERIES
6302 static const u16 ipr_blocked_processors[] = {
6303 PV_NORTHSTAR,
6304 PV_PULSAR,
6305 PV_POWER4,
6306 PV_ICESTAR,
6307 PV_SSTAR,
6308 PV_POWER4p,
6309 PV_630,
6310 PV_630p
6311 };
6312
6313 /**
6314 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6315 * @ioa_cfg: ioa cfg struct
6316 *
6317 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6318 * certain pSeries hardware. This function determines if the given
6319 * adapter is in one of these confgurations or not.
6320 *
6321 * Return value:
6322 * 1 if adapter is not supported / 0 if adapter is supported
6323 **/
6324 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6325 {
6326 int i;
6327
6328 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6329 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
6330 if (__is_processor(ipr_blocked_processors[i]))
6331 return 1;
6332 }
6333 }
6334 return 0;
6335 }
6336 #else
6337 #define ipr_invalid_adapter(ioa_cfg) 0
6338 #endif
6339
6340 /**
6341 * ipr_ioa_bringdown_done - IOA bring down completion.
6342 * @ipr_cmd: ipr command struct
6343 *
6344 * This function processes the completion of an adapter bring down.
6345 * It wakes any reset sleepers.
6346 *
6347 * Return value:
6348 * IPR_RC_JOB_RETURN
6349 **/
6350 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6351 {
6352 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6353
6354 ENTER;
6355 ioa_cfg->in_reset_reload = 0;
6356 ioa_cfg->reset_retries = 0;
6357 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6358 wake_up_all(&ioa_cfg->reset_wait_q);
6359
6360 spin_unlock_irq(ioa_cfg->host->host_lock);
6361 scsi_unblock_requests(ioa_cfg->host);
6362 spin_lock_irq(ioa_cfg->host->host_lock);
6363 LEAVE;
6364
6365 return IPR_RC_JOB_RETURN;
6366 }
6367
6368 /**
6369 * ipr_ioa_reset_done - IOA reset completion.
6370 * @ipr_cmd: ipr command struct
6371 *
6372 * This function processes the completion of an adapter reset.
6373 * It schedules any necessary mid-layer add/removes and
6374 * wakes any reset sleepers.
6375 *
6376 * Return value:
6377 * IPR_RC_JOB_RETURN
6378 **/
6379 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6380 {
6381 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6382 struct ipr_resource_entry *res;
6383 struct ipr_hostrcb *hostrcb, *temp;
6384 int i = 0;
6385
6386 ENTER;
6387 ioa_cfg->in_reset_reload = 0;
6388 ioa_cfg->allow_cmds = 1;
6389 ioa_cfg->reset_cmd = NULL;
6390 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6391
6392 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6393 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6394 ipr_trace;
6395 break;
6396 }
6397 }
6398 schedule_work(&ioa_cfg->work_q);
6399
6400 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6401 list_del(&hostrcb->queue);
6402 if (i++ < IPR_NUM_LOG_HCAMS)
6403 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6404 else
6405 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6406 }
6407
6408 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6409 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6410
6411 ioa_cfg->reset_retries = 0;
6412 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6413 wake_up_all(&ioa_cfg->reset_wait_q);
6414
6415 spin_unlock(ioa_cfg->host->host_lock);
6416 scsi_unblock_requests(ioa_cfg->host);
6417 spin_lock(ioa_cfg->host->host_lock);
6418
6419 if (!ioa_cfg->allow_cmds)
6420 scsi_block_requests(ioa_cfg->host);
6421
6422 LEAVE;
6423 return IPR_RC_JOB_RETURN;
6424 }
6425
6426 /**
6427 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6428 * @supported_dev: supported device struct
6429 * @vpids: vendor product id struct
6430 *
6431 * Return value:
6432 * none
6433 **/
6434 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6435 struct ipr_std_inq_vpids *vpids)
6436 {
6437 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6438 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6439 supported_dev->num_records = 1;
6440 supported_dev->data_length =
6441 cpu_to_be16(sizeof(struct ipr_supported_device));
6442 supported_dev->reserved = 0;
6443 }
6444
6445 /**
6446 * ipr_set_supported_devs - Send Set Supported Devices for a device
6447 * @ipr_cmd: ipr command struct
6448 *
6449 * This function sends a Set Supported Devices to the adapter
6450 *
6451 * Return value:
6452 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6453 **/
6454 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6455 {
6456 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6457 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6458 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6459 struct ipr_resource_entry *res = ipr_cmd->u.res;
6460
6461 ipr_cmd->job_step = ipr_ioa_reset_done;
6462
6463 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6464 if (!ipr_is_scsi_disk(res))
6465 continue;
6466
6467 ipr_cmd->u.res = res;
6468 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6469
6470 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6471 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6472 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6473
6474 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6475 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6476 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6477 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6478
6479 ipr_init_ioadl(ipr_cmd,
6480 ioa_cfg->vpd_cbs_dma +
6481 offsetof(struct ipr_misc_cbs, supp_dev),
6482 sizeof(struct ipr_supported_device),
6483 IPR_IOADL_FLAGS_WRITE_LAST);
6484
6485 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6486 IPR_SET_SUP_DEVICE_TIMEOUT);
6487
6488 if (!ioa_cfg->sis64)
6489 ipr_cmd->job_step = ipr_set_supported_devs;
6490 return IPR_RC_JOB_RETURN;
6491 }
6492
6493 return IPR_RC_JOB_CONTINUE;
6494 }
6495
6496 /**
6497 * ipr_get_mode_page - Locate specified mode page
6498 * @mode_pages: mode page buffer
6499 * @page_code: page code to find
6500 * @len: minimum required length for mode page
6501 *
6502 * Return value:
6503 * pointer to mode page / NULL on failure
6504 **/
6505 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6506 u32 page_code, u32 len)
6507 {
6508 struct ipr_mode_page_hdr *mode_hdr;
6509 u32 page_length;
6510 u32 length;
6511
6512 if (!mode_pages || (mode_pages->hdr.length == 0))
6513 return NULL;
6514
6515 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6516 mode_hdr = (struct ipr_mode_page_hdr *)
6517 (mode_pages->data + mode_pages->hdr.block_desc_len);
6518
6519 while (length) {
6520 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6521 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6522 return mode_hdr;
6523 break;
6524 } else {
6525 page_length = (sizeof(struct ipr_mode_page_hdr) +
6526 mode_hdr->page_length);
6527 length -= page_length;
6528 mode_hdr = (struct ipr_mode_page_hdr *)
6529 ((unsigned long)mode_hdr + page_length);
6530 }
6531 }
6532 return NULL;
6533 }
6534
6535 /**
6536 * ipr_check_term_power - Check for term power errors
6537 * @ioa_cfg: ioa config struct
6538 * @mode_pages: IOAFP mode pages buffer
6539 *
6540 * Check the IOAFP's mode page 28 for term power errors
6541 *
6542 * Return value:
6543 * nothing
6544 **/
6545 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6546 struct ipr_mode_pages *mode_pages)
6547 {
6548 int i;
6549 int entry_length;
6550 struct ipr_dev_bus_entry *bus;
6551 struct ipr_mode_page28 *mode_page;
6552
6553 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6554 sizeof(struct ipr_mode_page28));
6555
6556 entry_length = mode_page->entry_length;
6557
6558 bus = mode_page->bus;
6559
6560 for (i = 0; i < mode_page->num_entries; i++) {
6561 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6562 dev_err(&ioa_cfg->pdev->dev,
6563 "Term power is absent on scsi bus %d\n",
6564 bus->res_addr.bus);
6565 }
6566
6567 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6568 }
6569 }
6570
6571 /**
6572 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6573 * @ioa_cfg: ioa config struct
6574 *
6575 * Looks through the config table checking for SES devices. If
6576 * the SES device is in the SES table indicating a maximum SCSI
6577 * bus speed, the speed is limited for the bus.
6578 *
6579 * Return value:
6580 * none
6581 **/
6582 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6583 {
6584 u32 max_xfer_rate;
6585 int i;
6586
6587 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6588 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6589 ioa_cfg->bus_attr[i].bus_width);
6590
6591 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6592 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6593 }
6594 }
6595
6596 /**
6597 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6598 * @ioa_cfg: ioa config struct
6599 * @mode_pages: mode page 28 buffer
6600 *
6601 * Updates mode page 28 based on driver configuration
6602 *
6603 * Return value:
6604 * none
6605 **/
6606 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6607 struct ipr_mode_pages *mode_pages)
6608 {
6609 int i, entry_length;
6610 struct ipr_dev_bus_entry *bus;
6611 struct ipr_bus_attributes *bus_attr;
6612 struct ipr_mode_page28 *mode_page;
6613
6614 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6615 sizeof(struct ipr_mode_page28));
6616
6617 entry_length = mode_page->entry_length;
6618
6619 /* Loop for each device bus entry */
6620 for (i = 0, bus = mode_page->bus;
6621 i < mode_page->num_entries;
6622 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6623 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6624 dev_err(&ioa_cfg->pdev->dev,
6625 "Invalid resource address reported: 0x%08X\n",
6626 IPR_GET_PHYS_LOC(bus->res_addr));
6627 continue;
6628 }
6629
6630 bus_attr = &ioa_cfg->bus_attr[i];
6631 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6632 bus->bus_width = bus_attr->bus_width;
6633 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6634 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6635 if (bus_attr->qas_enabled)
6636 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6637 else
6638 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6639 }
6640 }
6641
6642 /**
6643 * ipr_build_mode_select - Build a mode select command
6644 * @ipr_cmd: ipr command struct
6645 * @res_handle: resource handle to send command to
6646 * @parm: Byte 2 of Mode Sense command
6647 * @dma_addr: DMA buffer address
6648 * @xfer_len: data transfer length
6649 *
6650 * Return value:
6651 * none
6652 **/
6653 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
6654 __be32 res_handle, u8 parm,
6655 dma_addr_t dma_addr, u8 xfer_len)
6656 {
6657 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6658
6659 ioarcb->res_handle = res_handle;
6660 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6661 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6662 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6663 ioarcb->cmd_pkt.cdb[1] = parm;
6664 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6665
6666 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
6667 }
6668
6669 /**
6670 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6671 * @ipr_cmd: ipr command struct
6672 *
6673 * This function sets up the SCSI bus attributes and sends
6674 * a Mode Select for Page 28 to activate them.
6675 *
6676 * Return value:
6677 * IPR_RC_JOB_RETURN
6678 **/
6679 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6680 {
6681 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6682 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6683 int length;
6684
6685 ENTER;
6686 ipr_scsi_bus_speed_limit(ioa_cfg);
6687 ipr_check_term_power(ioa_cfg, mode_pages);
6688 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6689 length = mode_pages->hdr.length + 1;
6690 mode_pages->hdr.length = 0;
6691
6692 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6693 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6694 length);
6695
6696 ipr_cmd->job_step = ipr_set_supported_devs;
6697 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6698 struct ipr_resource_entry, queue);
6699 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6700
6701 LEAVE;
6702 return IPR_RC_JOB_RETURN;
6703 }
6704
6705 /**
6706 * ipr_build_mode_sense - Builds a mode sense command
6707 * @ipr_cmd: ipr command struct
6708 * @res: resource entry struct
6709 * @parm: Byte 2 of mode sense command
6710 * @dma_addr: DMA address of mode sense buffer
6711 * @xfer_len: Size of DMA buffer
6712 *
6713 * Return value:
6714 * none
6715 **/
6716 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6717 __be32 res_handle,
6718 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
6719 {
6720 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6721
6722 ioarcb->res_handle = res_handle;
6723 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6724 ioarcb->cmd_pkt.cdb[2] = parm;
6725 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6726 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6727
6728 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6729 }
6730
6731 /**
6732 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6733 * @ipr_cmd: ipr command struct
6734 *
6735 * This function handles the failure of an IOA bringup command.
6736 *
6737 * Return value:
6738 * IPR_RC_JOB_RETURN
6739 **/
6740 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6741 {
6742 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6743 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6744
6745 dev_err(&ioa_cfg->pdev->dev,
6746 "0x%02X failed with IOASC: 0x%08X\n",
6747 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6748
6749 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6750 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6751 return IPR_RC_JOB_RETURN;
6752 }
6753
6754 /**
6755 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6756 * @ipr_cmd: ipr command struct
6757 *
6758 * This function handles the failure of a Mode Sense to the IOAFP.
6759 * Some adapters do not handle all mode pages.
6760 *
6761 * Return value:
6762 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6763 **/
6764 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6765 {
6766 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6767 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6768
6769 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6770 ipr_cmd->job_step = ipr_set_supported_devs;
6771 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6772 struct ipr_resource_entry, queue);
6773 return IPR_RC_JOB_CONTINUE;
6774 }
6775
6776 return ipr_reset_cmd_failed(ipr_cmd);
6777 }
6778
6779 /**
6780 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6781 * @ipr_cmd: ipr command struct
6782 *
6783 * This function send a Page 28 mode sense to the IOA to
6784 * retrieve SCSI bus attributes.
6785 *
6786 * Return value:
6787 * IPR_RC_JOB_RETURN
6788 **/
6789 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6790 {
6791 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6792
6793 ENTER;
6794 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6795 0x28, ioa_cfg->vpd_cbs_dma +
6796 offsetof(struct ipr_misc_cbs, mode_pages),
6797 sizeof(struct ipr_mode_pages));
6798
6799 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
6800 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
6801
6802 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6803
6804 LEAVE;
6805 return IPR_RC_JOB_RETURN;
6806 }
6807
6808 /**
6809 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6810 * @ipr_cmd: ipr command struct
6811 *
6812 * This function enables dual IOA RAID support if possible.
6813 *
6814 * Return value:
6815 * IPR_RC_JOB_RETURN
6816 **/
6817 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6818 {
6819 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6820 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6821 struct ipr_mode_page24 *mode_page;
6822 int length;
6823
6824 ENTER;
6825 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6826 sizeof(struct ipr_mode_page24));
6827
6828 if (mode_page)
6829 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6830
6831 length = mode_pages->hdr.length + 1;
6832 mode_pages->hdr.length = 0;
6833
6834 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6835 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6836 length);
6837
6838 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6839 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6840
6841 LEAVE;
6842 return IPR_RC_JOB_RETURN;
6843 }
6844
6845 /**
6846 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6847 * @ipr_cmd: ipr command struct
6848 *
6849 * This function handles the failure of a Mode Sense to the IOAFP.
6850 * Some adapters do not handle all mode pages.
6851 *
6852 * Return value:
6853 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6854 **/
6855 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6856 {
6857 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6858
6859 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6860 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6861 return IPR_RC_JOB_CONTINUE;
6862 }
6863
6864 return ipr_reset_cmd_failed(ipr_cmd);
6865 }
6866
6867 /**
6868 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6869 * @ipr_cmd: ipr command struct
6870 *
6871 * This function send a mode sense to the IOA to retrieve
6872 * the IOA Advanced Function Control mode page.
6873 *
6874 * Return value:
6875 * IPR_RC_JOB_RETURN
6876 **/
6877 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6878 {
6879 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6880
6881 ENTER;
6882 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6883 0x24, ioa_cfg->vpd_cbs_dma +
6884 offsetof(struct ipr_misc_cbs, mode_pages),
6885 sizeof(struct ipr_mode_pages));
6886
6887 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6888 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6889
6890 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6891
6892 LEAVE;
6893 return IPR_RC_JOB_RETURN;
6894 }
6895
6896 /**
6897 * ipr_init_res_table - Initialize the resource table
6898 * @ipr_cmd: ipr command struct
6899 *
6900 * This function looks through the existing resource table, comparing
6901 * it with the config table. This function will take care of old/new
6902 * devices and schedule adding/removing them from the mid-layer
6903 * as appropriate.
6904 *
6905 * Return value:
6906 * IPR_RC_JOB_CONTINUE
6907 **/
6908 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
6909 {
6910 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6911 struct ipr_resource_entry *res, *temp;
6912 struct ipr_config_table_entry_wrapper cfgtew;
6913 int entries, found, flag, i;
6914 LIST_HEAD(old_res);
6915
6916 ENTER;
6917 if (ioa_cfg->sis64)
6918 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
6919 else
6920 flag = ioa_cfg->u.cfg_table->hdr.flags;
6921
6922 if (flag & IPR_UCODE_DOWNLOAD_REQ)
6923 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6924
6925 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6926 list_move_tail(&res->queue, &old_res);
6927
6928 if (ioa_cfg->sis64)
6929 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
6930 else
6931 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
6932
6933 for (i = 0; i < entries; i++) {
6934 if (ioa_cfg->sis64)
6935 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
6936 else
6937 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
6938 found = 0;
6939
6940 list_for_each_entry_safe(res, temp, &old_res, queue) {
6941 if (ipr_is_same_device(res, &cfgtew)) {
6942 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6943 found = 1;
6944 break;
6945 }
6946 }
6947
6948 if (!found) {
6949 if (list_empty(&ioa_cfg->free_res_q)) {
6950 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6951 break;
6952 }
6953
6954 found = 1;
6955 res = list_entry(ioa_cfg->free_res_q.next,
6956 struct ipr_resource_entry, queue);
6957 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6958 ipr_init_res_entry(res, &cfgtew);
6959 res->add_to_ml = 1;
6960 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
6961 res->sdev->allow_restart = 1;
6962
6963 if (found)
6964 ipr_update_res_entry(res, &cfgtew);
6965 }
6966
6967 list_for_each_entry_safe(res, temp, &old_res, queue) {
6968 if (res->sdev) {
6969 res->del_from_ml = 1;
6970 res->res_handle = IPR_INVALID_RES_HANDLE;
6971 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6972 }
6973 }
6974
6975 list_for_each_entry_safe(res, temp, &old_res, queue) {
6976 ipr_clear_res_target(res);
6977 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6978 }
6979
6980 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6981 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6982 else
6983 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6984
6985 LEAVE;
6986 return IPR_RC_JOB_CONTINUE;
6987 }
6988
6989 /**
6990 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6991 * @ipr_cmd: ipr command struct
6992 *
6993 * This function sends a Query IOA Configuration command
6994 * to the adapter to retrieve the IOA configuration table.
6995 *
6996 * Return value:
6997 * IPR_RC_JOB_RETURN
6998 **/
6999 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7000 {
7001 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7002 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7003 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7004 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7005
7006 ENTER;
7007 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7008 ioa_cfg->dual_raid = 1;
7009 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7010 ucode_vpd->major_release, ucode_vpd->card_type,
7011 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7012 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7013 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7014
7015 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7016 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7017 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7018 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7019
7020 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7021 IPR_IOADL_FLAGS_READ_LAST);
7022
7023 ipr_cmd->job_step = ipr_init_res_table;
7024
7025 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7026
7027 LEAVE;
7028 return IPR_RC_JOB_RETURN;
7029 }
7030
7031 /**
7032 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7033 * @ipr_cmd: ipr command struct
7034 *
7035 * This utility function sends an inquiry to the adapter.
7036 *
7037 * Return value:
7038 * none
7039 **/
7040 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7041 dma_addr_t dma_addr, u8 xfer_len)
7042 {
7043 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7044
7045 ENTER;
7046 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7047 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7048
7049 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7050 ioarcb->cmd_pkt.cdb[1] = flags;
7051 ioarcb->cmd_pkt.cdb[2] = page;
7052 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7053
7054 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7055
7056 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7057 LEAVE;
7058 }
7059
7060 /**
7061 * ipr_inquiry_page_supported - Is the given inquiry page supported
7062 * @page0: inquiry page 0 buffer
7063 * @page: page code.
7064 *
7065 * This function determines if the specified inquiry page is supported.
7066 *
7067 * Return value:
7068 * 1 if page is supported / 0 if not
7069 **/
7070 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7071 {
7072 int i;
7073
7074 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7075 if (page0->page[i] == page)
7076 return 1;
7077
7078 return 0;
7079 }
7080
7081 /**
7082 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7083 * @ipr_cmd: ipr command struct
7084 *
7085 * This function sends a Page 0xD0 inquiry to the adapter
7086 * to retrieve adapter capabilities.
7087 *
7088 * Return value:
7089 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7090 **/
7091 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7092 {
7093 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7094 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7095 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7096
7097 ENTER;
7098 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7099 memset(cap, 0, sizeof(*cap));
7100
7101 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7102 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7103 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7104 sizeof(struct ipr_inquiry_cap));
7105 return IPR_RC_JOB_RETURN;
7106 }
7107
7108 LEAVE;
7109 return IPR_RC_JOB_CONTINUE;
7110 }
7111
7112 /**
7113 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7114 * @ipr_cmd: ipr command struct
7115 *
7116 * This function sends a Page 3 inquiry to the adapter
7117 * to retrieve software VPD information.
7118 *
7119 * Return value:
7120 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7121 **/
7122 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7123 {
7124 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7125
7126 ENTER;
7127
7128 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7129
7130 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7131 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7132 sizeof(struct ipr_inquiry_page3));
7133
7134 LEAVE;
7135 return IPR_RC_JOB_RETURN;
7136 }
7137
7138 /**
7139 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7140 * @ipr_cmd: ipr command struct
7141 *
7142 * This function sends a Page 0 inquiry to the adapter
7143 * to retrieve supported inquiry pages.
7144 *
7145 * Return value:
7146 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7147 **/
7148 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7149 {
7150 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7151 char type[5];
7152
7153 ENTER;
7154
7155 /* Grab the type out of the VPD and store it away */
7156 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7157 type[4] = '\0';
7158 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7159
7160 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7161
7162 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7163 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7164 sizeof(struct ipr_inquiry_page0));
7165
7166 LEAVE;
7167 return IPR_RC_JOB_RETURN;
7168 }
7169
7170 /**
7171 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7172 * @ipr_cmd: ipr command struct
7173 *
7174 * This function sends a standard inquiry to the adapter.
7175 *
7176 * Return value:
7177 * IPR_RC_JOB_RETURN
7178 **/
7179 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7180 {
7181 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7182
7183 ENTER;
7184 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7185
7186 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7187 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7188 sizeof(struct ipr_ioa_vpd));
7189
7190 LEAVE;
7191 return IPR_RC_JOB_RETURN;
7192 }
7193
7194 /**
7195 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7196 * @ipr_cmd: ipr command struct
7197 *
7198 * This function send an Identify Host Request Response Queue
7199 * command to establish the HRRQ with the adapter.
7200 *
7201 * Return value:
7202 * IPR_RC_JOB_RETURN
7203 **/
7204 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7205 {
7206 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7207 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7208
7209 ENTER;
7210 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7211
7212 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7213 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7214
7215 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7216 if (ioa_cfg->sis64)
7217 ioarcb->cmd_pkt.cdb[1] = 0x1;
7218 ioarcb->cmd_pkt.cdb[2] =
7219 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff;
7220 ioarcb->cmd_pkt.cdb[3] =
7221 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff;
7222 ioarcb->cmd_pkt.cdb[4] =
7223 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff;
7224 ioarcb->cmd_pkt.cdb[5] =
7225 ((u64) ioa_cfg->host_rrq_dma) & 0xff;
7226 ioarcb->cmd_pkt.cdb[7] =
7227 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
7228 ioarcb->cmd_pkt.cdb[8] =
7229 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
7230
7231 if (ioa_cfg->sis64) {
7232 ioarcb->cmd_pkt.cdb[10] =
7233 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff;
7234 ioarcb->cmd_pkt.cdb[11] =
7235 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff;
7236 ioarcb->cmd_pkt.cdb[12] =
7237 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff;
7238 ioarcb->cmd_pkt.cdb[13] =
7239 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff;
7240 }
7241
7242 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7243
7244 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7245
7246 LEAVE;
7247 return IPR_RC_JOB_RETURN;
7248 }
7249
7250 /**
7251 * ipr_reset_timer_done - Adapter reset timer function
7252 * @ipr_cmd: ipr command struct
7253 *
7254 * Description: This function is used in adapter reset processing
7255 * for timing events. If the reset_cmd pointer in the IOA
7256 * config struct is not this adapter's we are doing nested
7257 * resets and fail_all_ops will take care of freeing the
7258 * command block.
7259 *
7260 * Return value:
7261 * none
7262 **/
7263 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7264 {
7265 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7266 unsigned long lock_flags = 0;
7267
7268 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7269
7270 if (ioa_cfg->reset_cmd == ipr_cmd) {
7271 list_del(&ipr_cmd->queue);
7272 ipr_cmd->done(ipr_cmd);
7273 }
7274
7275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7276 }
7277
7278 /**
7279 * ipr_reset_start_timer - Start a timer for adapter reset job
7280 * @ipr_cmd: ipr command struct
7281 * @timeout: timeout value
7282 *
7283 * Description: This function is used in adapter reset processing
7284 * for timing events. If the reset_cmd pointer in the IOA
7285 * config struct is not this adapter's we are doing nested
7286 * resets and fail_all_ops will take care of freeing the
7287 * command block.
7288 *
7289 * Return value:
7290 * none
7291 **/
7292 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7293 unsigned long timeout)
7294 {
7295 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7296 ipr_cmd->done = ipr_reset_ioa_job;
7297
7298 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7299 ipr_cmd->timer.expires = jiffies + timeout;
7300 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7301 add_timer(&ipr_cmd->timer);
7302 }
7303
7304 /**
7305 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7306 * @ioa_cfg: ioa cfg struct
7307 *
7308 * Return value:
7309 * nothing
7310 **/
7311 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7312 {
7313 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
7314
7315 /* Initialize Host RRQ pointers */
7316 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
7317 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
7318 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
7319 ioa_cfg->toggle_bit = 1;
7320
7321 /* Zero out config table */
7322 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7323 }
7324
7325 /**
7326 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7327 * @ipr_cmd: ipr command struct
7328 *
7329 * Return value:
7330 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7331 **/
7332 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7333 {
7334 unsigned long stage, stage_time;
7335 u32 feedback;
7336 volatile u32 int_reg;
7337 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7338 u64 maskval = 0;
7339
7340 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7341 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7342 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7343
7344 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7345
7346 /* sanity check the stage_time value */
7347 if (stage_time == 0)
7348 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7349 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7350 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7351 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7352 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7353
7354 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7355 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7356 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7357 stage_time = ioa_cfg->transop_timeout;
7358 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7359 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7360 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7361 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7362 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7363 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7364 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7365 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7366 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7367 return IPR_RC_JOB_CONTINUE;
7368 }
7369 }
7370
7371 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7372 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7373 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7374 ipr_cmd->done = ipr_reset_ioa_job;
7375 add_timer(&ipr_cmd->timer);
7376 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7377
7378 return IPR_RC_JOB_RETURN;
7379 }
7380
7381 /**
7382 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7383 * @ipr_cmd: ipr command struct
7384 *
7385 * This function reinitializes some control blocks and
7386 * enables destructive diagnostics on the adapter.
7387 *
7388 * Return value:
7389 * IPR_RC_JOB_RETURN
7390 **/
7391 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7392 {
7393 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7394 volatile u32 int_reg;
7395 volatile u64 maskval;
7396
7397 ENTER;
7398 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7399 ipr_init_ioa_mem(ioa_cfg);
7400
7401 ioa_cfg->allow_interrupts = 1;
7402 if (ioa_cfg->sis64) {
7403 /* Set the adapter to the correct endian mode. */
7404 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7405 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7406 }
7407
7408 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7409
7410 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7411 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7412 ioa_cfg->regs.clr_interrupt_mask_reg32);
7413 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7414 return IPR_RC_JOB_CONTINUE;
7415 }
7416
7417 /* Enable destructive diagnostics on IOA */
7418 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7419
7420 if (ioa_cfg->sis64) {
7421 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7422 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7423 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7424 } else
7425 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7426
7427 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7428
7429 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7430
7431 if (ioa_cfg->sis64) {
7432 ipr_cmd->job_step = ipr_reset_next_stage;
7433 return IPR_RC_JOB_CONTINUE;
7434 }
7435
7436 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7437 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7438 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7439 ipr_cmd->done = ipr_reset_ioa_job;
7440 add_timer(&ipr_cmd->timer);
7441 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7442
7443 LEAVE;
7444 return IPR_RC_JOB_RETURN;
7445 }
7446
7447 /**
7448 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7449 * @ipr_cmd: ipr command struct
7450 *
7451 * This function is invoked when an adapter dump has run out
7452 * of processing time.
7453 *
7454 * Return value:
7455 * IPR_RC_JOB_CONTINUE
7456 **/
7457 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7458 {
7459 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7460
7461 if (ioa_cfg->sdt_state == GET_DUMP)
7462 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7463 else if (ioa_cfg->sdt_state == READ_DUMP)
7464 ioa_cfg->sdt_state = ABORT_DUMP;
7465
7466 ioa_cfg->dump_timeout = 1;
7467 ipr_cmd->job_step = ipr_reset_alert;
7468
7469 return IPR_RC_JOB_CONTINUE;
7470 }
7471
7472 /**
7473 * ipr_unit_check_no_data - Log a unit check/no data error log
7474 * @ioa_cfg: ioa config struct
7475 *
7476 * Logs an error indicating the adapter unit checked, but for some
7477 * reason, we were unable to fetch the unit check buffer.
7478 *
7479 * Return value:
7480 * nothing
7481 **/
7482 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7483 {
7484 ioa_cfg->errors_logged++;
7485 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7486 }
7487
7488 /**
7489 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7490 * @ioa_cfg: ioa config struct
7491 *
7492 * Fetches the unit check buffer from the adapter by clocking the data
7493 * through the mailbox register.
7494 *
7495 * Return value:
7496 * nothing
7497 **/
7498 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7499 {
7500 unsigned long mailbox;
7501 struct ipr_hostrcb *hostrcb;
7502 struct ipr_uc_sdt sdt;
7503 int rc, length;
7504 u32 ioasc;
7505
7506 mailbox = readl(ioa_cfg->ioa_mailbox);
7507
7508 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
7509 ipr_unit_check_no_data(ioa_cfg);
7510 return;
7511 }
7512
7513 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7514 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7515 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7516
7517 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7518 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7519 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
7520 ipr_unit_check_no_data(ioa_cfg);
7521 return;
7522 }
7523
7524 /* Find length of the first sdt entry (UC buffer) */
7525 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7526 length = be32_to_cpu(sdt.entry[0].end_token);
7527 else
7528 length = (be32_to_cpu(sdt.entry[0].end_token) -
7529 be32_to_cpu(sdt.entry[0].start_token)) &
7530 IPR_FMT2_MBX_ADDR_MASK;
7531
7532 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7533 struct ipr_hostrcb, queue);
7534 list_del(&hostrcb->queue);
7535 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7536
7537 rc = ipr_get_ldump_data_section(ioa_cfg,
7538 be32_to_cpu(sdt.entry[0].start_token),
7539 (__be32 *)&hostrcb->hcam,
7540 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7541
7542 if (!rc) {
7543 ipr_handle_log_data(ioa_cfg, hostrcb);
7544 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
7545 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7546 ioa_cfg->sdt_state == GET_DUMP)
7547 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7548 } else
7549 ipr_unit_check_no_data(ioa_cfg);
7550
7551 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7552 }
7553
7554 /**
7555 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
7556 * @ipr_cmd: ipr command struct
7557 *
7558 * Description: This function will call to get the unit check buffer.
7559 *
7560 * Return value:
7561 * IPR_RC_JOB_RETURN
7562 **/
7563 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
7564 {
7565 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7566
7567 ENTER;
7568 ioa_cfg->ioa_unit_checked = 0;
7569 ipr_get_unit_check_buffer(ioa_cfg);
7570 ipr_cmd->job_step = ipr_reset_alert;
7571 ipr_reset_start_timer(ipr_cmd, 0);
7572
7573 LEAVE;
7574 return IPR_RC_JOB_RETURN;
7575 }
7576
7577 /**
7578 * ipr_reset_restore_cfg_space - Restore PCI config space.
7579 * @ipr_cmd: ipr command struct
7580 *
7581 * Description: This function restores the saved PCI config space of
7582 * the adapter, fails all outstanding ops back to the callers, and
7583 * fetches the dump/unit check if applicable to this reset.
7584 *
7585 * Return value:
7586 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7587 **/
7588 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7589 {
7590 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7591 u32 int_reg;
7592
7593 ENTER;
7594 ioa_cfg->pdev->state_saved = true;
7595 pci_restore_state(ioa_cfg->pdev);
7596
7597 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
7598 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7599 return IPR_RC_JOB_CONTINUE;
7600 }
7601
7602 ipr_fail_all_ops(ioa_cfg);
7603
7604 if (ioa_cfg->sis64) {
7605 /* Set the adapter to the correct endian mode. */
7606 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7607 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7608 }
7609
7610 if (ioa_cfg->ioa_unit_checked) {
7611 if (ioa_cfg->sis64) {
7612 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
7613 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
7614 return IPR_RC_JOB_RETURN;
7615 } else {
7616 ioa_cfg->ioa_unit_checked = 0;
7617 ipr_get_unit_check_buffer(ioa_cfg);
7618 ipr_cmd->job_step = ipr_reset_alert;
7619 ipr_reset_start_timer(ipr_cmd, 0);
7620 return IPR_RC_JOB_RETURN;
7621 }
7622 }
7623
7624 if (ioa_cfg->in_ioa_bringdown) {
7625 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7626 } else {
7627 ipr_cmd->job_step = ipr_reset_enable_ioa;
7628
7629 if (GET_DUMP == ioa_cfg->sdt_state) {
7630 ioa_cfg->sdt_state = READ_DUMP;
7631 ioa_cfg->dump_timeout = 0;
7632 if (ioa_cfg->sis64)
7633 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
7634 else
7635 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
7636 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7637 schedule_work(&ioa_cfg->work_q);
7638 return IPR_RC_JOB_RETURN;
7639 }
7640 }
7641
7642 LEAVE;
7643 return IPR_RC_JOB_CONTINUE;
7644 }
7645
7646 /**
7647 * ipr_reset_bist_done - BIST has completed on the adapter.
7648 * @ipr_cmd: ipr command struct
7649 *
7650 * Description: Unblock config space and resume the reset process.
7651 *
7652 * Return value:
7653 * IPR_RC_JOB_CONTINUE
7654 **/
7655 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7656 {
7657 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7658
7659 ENTER;
7660 if (ioa_cfg->cfg_locked)
7661 pci_cfg_access_unlock(ioa_cfg->pdev);
7662 ioa_cfg->cfg_locked = 0;
7663 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7664 LEAVE;
7665 return IPR_RC_JOB_CONTINUE;
7666 }
7667
7668 /**
7669 * ipr_reset_start_bist - Run BIST on the adapter.
7670 * @ipr_cmd: ipr command struct
7671 *
7672 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7673 *
7674 * Return value:
7675 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7676 **/
7677 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7678 {
7679 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7680 int rc = PCIBIOS_SUCCESSFUL;
7681
7682 ENTER;
7683 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
7684 writel(IPR_UPROCI_SIS64_START_BIST,
7685 ioa_cfg->regs.set_uproc_interrupt_reg32);
7686 else
7687 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7688
7689 if (rc == PCIBIOS_SUCCESSFUL) {
7690 ipr_cmd->job_step = ipr_reset_bist_done;
7691 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7692 rc = IPR_RC_JOB_RETURN;
7693 } else {
7694 if (ioa_cfg->cfg_locked)
7695 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
7696 ioa_cfg->cfg_locked = 0;
7697 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7698 rc = IPR_RC_JOB_CONTINUE;
7699 }
7700
7701 LEAVE;
7702 return rc;
7703 }
7704
7705 /**
7706 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7707 * @ipr_cmd: ipr command struct
7708 *
7709 * Description: This clears PCI reset to the adapter and delays two seconds.
7710 *
7711 * Return value:
7712 * IPR_RC_JOB_RETURN
7713 **/
7714 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7715 {
7716 ENTER;
7717 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
7718 ipr_cmd->job_step = ipr_reset_bist_done;
7719 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7720 LEAVE;
7721 return IPR_RC_JOB_RETURN;
7722 }
7723
7724 /**
7725 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
7726 * @ipr_cmd: ipr command struct
7727 *
7728 * Description: This asserts PCI reset to the adapter.
7729 *
7730 * Return value:
7731 * IPR_RC_JOB_RETURN
7732 **/
7733 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
7734 {
7735 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7736 struct pci_dev *pdev = ioa_cfg->pdev;
7737
7738 ENTER;
7739 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7740 ipr_cmd->job_step = ipr_reset_slot_reset_done;
7741 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
7742 LEAVE;
7743 return IPR_RC_JOB_RETURN;
7744 }
7745
7746 /**
7747 * ipr_reset_block_config_access_wait - Wait for permission to block config access
7748 * @ipr_cmd: ipr command struct
7749 *
7750 * Description: This attempts to block config access to the IOA.
7751 *
7752 * Return value:
7753 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7754 **/
7755 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
7756 {
7757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7758 int rc = IPR_RC_JOB_CONTINUE;
7759
7760 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
7761 ioa_cfg->cfg_locked = 1;
7762 ipr_cmd->job_step = ioa_cfg->reset;
7763 } else {
7764 if (ipr_cmd->u.time_left) {
7765 rc = IPR_RC_JOB_RETURN;
7766 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7767 ipr_reset_start_timer(ipr_cmd,
7768 IPR_CHECK_FOR_RESET_TIMEOUT);
7769 } else {
7770 ipr_cmd->job_step = ioa_cfg->reset;
7771 dev_err(&ioa_cfg->pdev->dev,
7772 "Timed out waiting to lock config access. Resetting anyway.\n");
7773 }
7774 }
7775
7776 return rc;
7777 }
7778
7779 /**
7780 * ipr_reset_block_config_access - Block config access to the IOA
7781 * @ipr_cmd: ipr command struct
7782 *
7783 * Description: This attempts to block config access to the IOA
7784 *
7785 * Return value:
7786 * IPR_RC_JOB_CONTINUE
7787 **/
7788 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
7789 {
7790 ipr_cmd->ioa_cfg->cfg_locked = 0;
7791 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
7792 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7793 return IPR_RC_JOB_CONTINUE;
7794 }
7795
7796 /**
7797 * ipr_reset_allowed - Query whether or not IOA can be reset
7798 * @ioa_cfg: ioa config struct
7799 *
7800 * Return value:
7801 * 0 if reset not allowed / non-zero if reset is allowed
7802 **/
7803 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
7804 {
7805 volatile u32 temp_reg;
7806
7807 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7808 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
7809 }
7810
7811 /**
7812 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
7813 * @ipr_cmd: ipr command struct
7814 *
7815 * Description: This function waits for adapter permission to run BIST,
7816 * then runs BIST. If the adapter does not give permission after a
7817 * reasonable time, we will reset the adapter anyway. The impact of
7818 * resetting the adapter without warning the adapter is the risk of
7819 * losing the persistent error log on the adapter. If the adapter is
7820 * reset while it is writing to the flash on the adapter, the flash
7821 * segment will have bad ECC and be zeroed.
7822 *
7823 * Return value:
7824 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7825 **/
7826 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
7827 {
7828 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7829 int rc = IPR_RC_JOB_RETURN;
7830
7831 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
7832 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7833 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7834 } else {
7835 ipr_cmd->job_step = ipr_reset_block_config_access;
7836 rc = IPR_RC_JOB_CONTINUE;
7837 }
7838
7839 return rc;
7840 }
7841
7842 /**
7843 * ipr_reset_alert - Alert the adapter of a pending reset
7844 * @ipr_cmd: ipr command struct
7845 *
7846 * Description: This function alerts the adapter that it will be reset.
7847 * If memory space is not currently enabled, proceed directly
7848 * to running BIST on the adapter. The timer must always be started
7849 * so we guarantee we do not run BIST from ipr_isr.
7850 *
7851 * Return value:
7852 * IPR_RC_JOB_RETURN
7853 **/
7854 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
7855 {
7856 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7857 u16 cmd_reg;
7858 int rc;
7859
7860 ENTER;
7861 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
7862
7863 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
7864 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
7865 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
7866 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
7867 } else {
7868 ipr_cmd->job_step = ipr_reset_block_config_access;
7869 }
7870
7871 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7872 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7873
7874 LEAVE;
7875 return IPR_RC_JOB_RETURN;
7876 }
7877
7878 /**
7879 * ipr_reset_ucode_download_done - Microcode download completion
7880 * @ipr_cmd: ipr command struct
7881 *
7882 * Description: This function unmaps the microcode download buffer.
7883 *
7884 * Return value:
7885 * IPR_RC_JOB_CONTINUE
7886 **/
7887 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
7888 {
7889 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7890 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7891
7892 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
7893 sglist->num_sg, DMA_TO_DEVICE);
7894
7895 ipr_cmd->job_step = ipr_reset_alert;
7896 return IPR_RC_JOB_CONTINUE;
7897 }
7898
7899 /**
7900 * ipr_reset_ucode_download - Download microcode to the adapter
7901 * @ipr_cmd: ipr command struct
7902 *
7903 * Description: This function checks to see if it there is microcode
7904 * to download to the adapter. If there is, a download is performed.
7905 *
7906 * Return value:
7907 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7908 **/
7909 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
7910 {
7911 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7912 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7913
7914 ENTER;
7915 ipr_cmd->job_step = ipr_reset_alert;
7916
7917 if (!sglist)
7918 return IPR_RC_JOB_CONTINUE;
7919
7920 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7921 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7922 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
7923 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
7924 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
7925 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
7926 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
7927
7928 if (ioa_cfg->sis64)
7929 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
7930 else
7931 ipr_build_ucode_ioadl(ipr_cmd, sglist);
7932 ipr_cmd->job_step = ipr_reset_ucode_download_done;
7933
7934 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7935 IPR_WRITE_BUFFER_TIMEOUT);
7936
7937 LEAVE;
7938 return IPR_RC_JOB_RETURN;
7939 }
7940
7941 /**
7942 * ipr_reset_shutdown_ioa - Shutdown the adapter
7943 * @ipr_cmd: ipr command struct
7944 *
7945 * Description: This function issues an adapter shutdown of the
7946 * specified type to the specified adapter as part of the
7947 * adapter reset job.
7948 *
7949 * Return value:
7950 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7951 **/
7952 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
7953 {
7954 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7955 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
7956 unsigned long timeout;
7957 int rc = IPR_RC_JOB_CONTINUE;
7958
7959 ENTER;
7960 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
7961 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7962 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7963 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
7964 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
7965
7966 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
7967 timeout = IPR_SHUTDOWN_TIMEOUT;
7968 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
7969 timeout = IPR_INTERNAL_TIMEOUT;
7970 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7971 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
7972 else
7973 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
7974
7975 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
7976
7977 rc = IPR_RC_JOB_RETURN;
7978 ipr_cmd->job_step = ipr_reset_ucode_download;
7979 } else
7980 ipr_cmd->job_step = ipr_reset_alert;
7981
7982 LEAVE;
7983 return rc;
7984 }
7985
7986 /**
7987 * ipr_reset_ioa_job - Adapter reset job
7988 * @ipr_cmd: ipr command struct
7989 *
7990 * Description: This function is the job router for the adapter reset job.
7991 *
7992 * Return value:
7993 * none
7994 **/
7995 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
7996 {
7997 u32 rc, ioasc;
7998 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7999
8000 do {
8001 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8002
8003 if (ioa_cfg->reset_cmd != ipr_cmd) {
8004 /*
8005 * We are doing nested adapter resets and this is
8006 * not the current reset job.
8007 */
8008 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8009 return;
8010 }
8011
8012 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8013 rc = ipr_cmd->job_step_failed(ipr_cmd);
8014 if (rc == IPR_RC_JOB_RETURN)
8015 return;
8016 }
8017
8018 ipr_reinit_ipr_cmnd(ipr_cmd);
8019 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8020 rc = ipr_cmd->job_step(ipr_cmd);
8021 } while(rc == IPR_RC_JOB_CONTINUE);
8022 }
8023
8024 /**
8025 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8026 * @ioa_cfg: ioa config struct
8027 * @job_step: first job step of reset job
8028 * @shutdown_type: shutdown type
8029 *
8030 * Description: This function will initiate the reset of the given adapter
8031 * starting at the selected job step.
8032 * If the caller needs to wait on the completion of the reset,
8033 * the caller must sleep on the reset_wait_q.
8034 *
8035 * Return value:
8036 * none
8037 **/
8038 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8039 int (*job_step) (struct ipr_cmnd *),
8040 enum ipr_shutdown_type shutdown_type)
8041 {
8042 struct ipr_cmnd *ipr_cmd;
8043
8044 ioa_cfg->in_reset_reload = 1;
8045 ioa_cfg->allow_cmds = 0;
8046 scsi_block_requests(ioa_cfg->host);
8047
8048 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
8049 ioa_cfg->reset_cmd = ipr_cmd;
8050 ipr_cmd->job_step = job_step;
8051 ipr_cmd->u.shutdown_type = shutdown_type;
8052
8053 ipr_reset_ioa_job(ipr_cmd);
8054 }
8055
8056 /**
8057 * ipr_initiate_ioa_reset - Initiate an adapter reset
8058 * @ioa_cfg: ioa config struct
8059 * @shutdown_type: shutdown type
8060 *
8061 * Description: This function will initiate the reset of the given adapter.
8062 * If the caller needs to wait on the completion of the reset,
8063 * the caller must sleep on the reset_wait_q.
8064 *
8065 * Return value:
8066 * none
8067 **/
8068 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8069 enum ipr_shutdown_type shutdown_type)
8070 {
8071 if (ioa_cfg->ioa_is_dead)
8072 return;
8073
8074 if (ioa_cfg->in_reset_reload) {
8075 if (ioa_cfg->sdt_state == GET_DUMP)
8076 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8077 else if (ioa_cfg->sdt_state == READ_DUMP)
8078 ioa_cfg->sdt_state = ABORT_DUMP;
8079 }
8080
8081 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
8082 dev_err(&ioa_cfg->pdev->dev,
8083 "IOA taken offline - error recovery failed\n");
8084
8085 ioa_cfg->reset_retries = 0;
8086 ioa_cfg->ioa_is_dead = 1;
8087
8088 if (ioa_cfg->in_ioa_bringdown) {
8089 ioa_cfg->reset_cmd = NULL;
8090 ioa_cfg->in_reset_reload = 0;
8091 ipr_fail_all_ops(ioa_cfg);
8092 wake_up_all(&ioa_cfg->reset_wait_q);
8093
8094 spin_unlock_irq(ioa_cfg->host->host_lock);
8095 scsi_unblock_requests(ioa_cfg->host);
8096 spin_lock_irq(ioa_cfg->host->host_lock);
8097 return;
8098 } else {
8099 ioa_cfg->in_ioa_bringdown = 1;
8100 shutdown_type = IPR_SHUTDOWN_NONE;
8101 }
8102 }
8103
8104 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
8105 shutdown_type);
8106 }
8107
8108 /**
8109 * ipr_reset_freeze - Hold off all I/O activity
8110 * @ipr_cmd: ipr command struct
8111 *
8112 * Description: If the PCI slot is frozen, hold off all I/O
8113 * activity; then, as soon as the slot is available again,
8114 * initiate an adapter reset.
8115 */
8116 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
8117 {
8118 /* Disallow new interrupts, avoid loop */
8119 ipr_cmd->ioa_cfg->allow_interrupts = 0;
8120 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
8121 ipr_cmd->done = ipr_reset_ioa_job;
8122 return IPR_RC_JOB_RETURN;
8123 }
8124
8125 /**
8126 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
8127 * @pdev: PCI device struct
8128 *
8129 * Description: This routine is called to tell us that the PCI bus
8130 * is down. Can't do anything here, except put the device driver
8131 * into a holding pattern, waiting for the PCI bus to come back.
8132 */
8133 static void ipr_pci_frozen(struct pci_dev *pdev)
8134 {
8135 unsigned long flags = 0;
8136 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8137
8138 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8139 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
8140 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8141 }
8142
8143 /**
8144 * ipr_pci_slot_reset - Called when PCI slot has been reset.
8145 * @pdev: PCI device struct
8146 *
8147 * Description: This routine is called by the pci error recovery
8148 * code after the PCI slot has been reset, just before we
8149 * should resume normal operations.
8150 */
8151 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
8152 {
8153 unsigned long flags = 0;
8154 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8155
8156 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8157 if (ioa_cfg->needs_warm_reset)
8158 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8159 else
8160 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
8161 IPR_SHUTDOWN_NONE);
8162 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8163 return PCI_ERS_RESULT_RECOVERED;
8164 }
8165
8166 /**
8167 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
8168 * @pdev: PCI device struct
8169 *
8170 * Description: This routine is called when the PCI bus has
8171 * permanently failed.
8172 */
8173 static void ipr_pci_perm_failure(struct pci_dev *pdev)
8174 {
8175 unsigned long flags = 0;
8176 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8177
8178 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8179 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8180 ioa_cfg->sdt_state = ABORT_DUMP;
8181 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
8182 ioa_cfg->in_ioa_bringdown = 1;
8183 ioa_cfg->allow_cmds = 0;
8184 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8185 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8186 }
8187
8188 /**
8189 * ipr_pci_error_detected - Called when a PCI error is detected.
8190 * @pdev: PCI device struct
8191 * @state: PCI channel state
8192 *
8193 * Description: Called when a PCI error is detected.
8194 *
8195 * Return value:
8196 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8197 */
8198 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8199 pci_channel_state_t state)
8200 {
8201 switch (state) {
8202 case pci_channel_io_frozen:
8203 ipr_pci_frozen(pdev);
8204 return PCI_ERS_RESULT_NEED_RESET;
8205 case pci_channel_io_perm_failure:
8206 ipr_pci_perm_failure(pdev);
8207 return PCI_ERS_RESULT_DISCONNECT;
8208 break;
8209 default:
8210 break;
8211 }
8212 return PCI_ERS_RESULT_NEED_RESET;
8213 }
8214
8215 /**
8216 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8217 * @ioa_cfg: ioa cfg struct
8218 *
8219 * Description: This is the second phase of adapter intialization
8220 * This function takes care of initilizing the adapter to the point
8221 * where it can accept new commands.
8222
8223 * Return value:
8224 * 0 on success / -EIO on failure
8225 **/
8226 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8227 {
8228 int rc = 0;
8229 unsigned long host_lock_flags = 0;
8230
8231 ENTER;
8232 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8233 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
8234 if (ioa_cfg->needs_hard_reset) {
8235 ioa_cfg->needs_hard_reset = 0;
8236 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8237 } else
8238 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8239 IPR_SHUTDOWN_NONE);
8240
8241 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8242 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8243 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8244
8245 if (ioa_cfg->ioa_is_dead) {
8246 rc = -EIO;
8247 } else if (ipr_invalid_adapter(ioa_cfg)) {
8248 if (!ipr_testmode)
8249 rc = -EIO;
8250
8251 dev_err(&ioa_cfg->pdev->dev,
8252 "Adapter not supported in this hardware configuration.\n");
8253 }
8254
8255 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8256
8257 LEAVE;
8258 return rc;
8259 }
8260
8261 /**
8262 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8263 * @ioa_cfg: ioa config struct
8264 *
8265 * Return value:
8266 * none
8267 **/
8268 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8269 {
8270 int i;
8271
8272 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8273 if (ioa_cfg->ipr_cmnd_list[i])
8274 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8275 ioa_cfg->ipr_cmnd_list[i],
8276 ioa_cfg->ipr_cmnd_list_dma[i]);
8277
8278 ioa_cfg->ipr_cmnd_list[i] = NULL;
8279 }
8280
8281 if (ioa_cfg->ipr_cmd_pool)
8282 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
8283
8284 kfree(ioa_cfg->ipr_cmnd_list);
8285 kfree(ioa_cfg->ipr_cmnd_list_dma);
8286 ioa_cfg->ipr_cmnd_list = NULL;
8287 ioa_cfg->ipr_cmnd_list_dma = NULL;
8288 ioa_cfg->ipr_cmd_pool = NULL;
8289 }
8290
8291 /**
8292 * ipr_free_mem - Frees memory allocated for an adapter
8293 * @ioa_cfg: ioa cfg struct
8294 *
8295 * Return value:
8296 * nothing
8297 **/
8298 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8299 {
8300 int i;
8301
8302 kfree(ioa_cfg->res_entries);
8303 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8304 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8305 ipr_free_cmd_blks(ioa_cfg);
8306 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8307 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8308 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8309 ioa_cfg->u.cfg_table,
8310 ioa_cfg->cfg_table_dma);
8311
8312 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8313 pci_free_consistent(ioa_cfg->pdev,
8314 sizeof(struct ipr_hostrcb),
8315 ioa_cfg->hostrcb[i],
8316 ioa_cfg->hostrcb_dma[i]);
8317 }
8318
8319 ipr_free_dump(ioa_cfg);
8320 kfree(ioa_cfg->trace);
8321 }
8322
8323 /**
8324 * ipr_free_all_resources - Free all allocated resources for an adapter.
8325 * @ipr_cmd: ipr command struct
8326 *
8327 * This function frees all allocated resources for the
8328 * specified adapter.
8329 *
8330 * Return value:
8331 * none
8332 **/
8333 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8334 {
8335 struct pci_dev *pdev = ioa_cfg->pdev;
8336
8337 ENTER;
8338 free_irq(pdev->irq, ioa_cfg);
8339 pci_disable_msi(pdev);
8340 iounmap(ioa_cfg->hdw_dma_regs);
8341 pci_release_regions(pdev);
8342 ipr_free_mem(ioa_cfg);
8343 scsi_host_put(ioa_cfg->host);
8344 pci_disable_device(pdev);
8345 LEAVE;
8346 }
8347
8348 /**
8349 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8350 * @ioa_cfg: ioa config struct
8351 *
8352 * Return value:
8353 * 0 on success / -ENOMEM on allocation failure
8354 **/
8355 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8356 {
8357 struct ipr_cmnd *ipr_cmd;
8358 struct ipr_ioarcb *ioarcb;
8359 dma_addr_t dma_addr;
8360 int i;
8361
8362 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
8363 sizeof(struct ipr_cmnd), 512, 0);
8364
8365 if (!ioa_cfg->ipr_cmd_pool)
8366 return -ENOMEM;
8367
8368 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
8369 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
8370
8371 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
8372 ipr_free_cmd_blks(ioa_cfg);
8373 return -ENOMEM;
8374 }
8375
8376 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8377 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
8378
8379 if (!ipr_cmd) {
8380 ipr_free_cmd_blks(ioa_cfg);
8381 return -ENOMEM;
8382 }
8383
8384 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8385 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8386 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8387
8388 ioarcb = &ipr_cmd->ioarcb;
8389 ipr_cmd->dma_addr = dma_addr;
8390 if (ioa_cfg->sis64)
8391 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8392 else
8393 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8394
8395 ioarcb->host_response_handle = cpu_to_be32(i << 2);
8396 if (ioa_cfg->sis64) {
8397 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8398 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8399 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
8400 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
8401 } else {
8402 ioarcb->write_ioadl_addr =
8403 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8404 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8405 ioarcb->ioasa_host_pci_addr =
8406 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
8407 }
8408 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8409 ipr_cmd->cmd_index = i;
8410 ipr_cmd->ioa_cfg = ioa_cfg;
8411 ipr_cmd->sense_buffer_dma = dma_addr +
8412 offsetof(struct ipr_cmnd, sense_buffer);
8413
8414 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8415 }
8416
8417 return 0;
8418 }
8419
8420 /**
8421 * ipr_alloc_mem - Allocate memory for an adapter
8422 * @ioa_cfg: ioa config struct
8423 *
8424 * Return value:
8425 * 0 on success / non-zero for error
8426 **/
8427 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8428 {
8429 struct pci_dev *pdev = ioa_cfg->pdev;
8430 int i, rc = -ENOMEM;
8431
8432 ENTER;
8433 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
8434 ioa_cfg->max_devs_supported, GFP_KERNEL);
8435
8436 if (!ioa_cfg->res_entries)
8437 goto out;
8438
8439 if (ioa_cfg->sis64) {
8440 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8441 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8442 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8443 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8444 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8445 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8446 }
8447
8448 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
8449 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
8450 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8451 }
8452
8453 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8454 sizeof(struct ipr_misc_cbs),
8455 &ioa_cfg->vpd_cbs_dma);
8456
8457 if (!ioa_cfg->vpd_cbs)
8458 goto out_free_res_entries;
8459
8460 if (ipr_alloc_cmd_blks(ioa_cfg))
8461 goto out_free_vpd_cbs;
8462
8463 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
8464 sizeof(u32) * IPR_NUM_CMD_BLKS,
8465 &ioa_cfg->host_rrq_dma);
8466
8467 if (!ioa_cfg->host_rrq)
8468 goto out_ipr_free_cmd_blocks;
8469
8470 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
8471 ioa_cfg->cfg_table_size,
8472 &ioa_cfg->cfg_table_dma);
8473
8474 if (!ioa_cfg->u.cfg_table)
8475 goto out_free_host_rrq;
8476
8477 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8478 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
8479 sizeof(struct ipr_hostrcb),
8480 &ioa_cfg->hostrcb_dma[i]);
8481
8482 if (!ioa_cfg->hostrcb[i])
8483 goto out_free_hostrcb_dma;
8484
8485 ioa_cfg->hostrcb[i]->hostrcb_dma =
8486 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
8487 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
8488 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
8489 }
8490
8491 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
8492 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
8493
8494 if (!ioa_cfg->trace)
8495 goto out_free_hostrcb_dma;
8496
8497 rc = 0;
8498 out:
8499 LEAVE;
8500 return rc;
8501
8502 out_free_hostrcb_dma:
8503 while (i-- > 0) {
8504 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
8505 ioa_cfg->hostrcb[i],
8506 ioa_cfg->hostrcb_dma[i]);
8507 }
8508 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
8509 ioa_cfg->u.cfg_table,
8510 ioa_cfg->cfg_table_dma);
8511 out_free_host_rrq:
8512 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8513 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8514 out_ipr_free_cmd_blocks:
8515 ipr_free_cmd_blks(ioa_cfg);
8516 out_free_vpd_cbs:
8517 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
8518 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8519 out_free_res_entries:
8520 kfree(ioa_cfg->res_entries);
8521 goto out;
8522 }
8523
8524 /**
8525 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
8526 * @ioa_cfg: ioa config struct
8527 *
8528 * Return value:
8529 * none
8530 **/
8531 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
8532 {
8533 int i;
8534
8535 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
8536 ioa_cfg->bus_attr[i].bus = i;
8537 ioa_cfg->bus_attr[i].qas_enabled = 0;
8538 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
8539 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
8540 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
8541 else
8542 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
8543 }
8544 }
8545
8546 /**
8547 * ipr_init_ioa_cfg - Initialize IOA config struct
8548 * @ioa_cfg: ioa config struct
8549 * @host: scsi host struct
8550 * @pdev: PCI dev struct
8551 *
8552 * Return value:
8553 * none
8554 **/
8555 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
8556 struct Scsi_Host *host, struct pci_dev *pdev)
8557 {
8558 const struct ipr_interrupt_offsets *p;
8559 struct ipr_interrupts *t;
8560 void __iomem *base;
8561
8562 ioa_cfg->host = host;
8563 ioa_cfg->pdev = pdev;
8564 ioa_cfg->log_level = ipr_log_level;
8565 ioa_cfg->doorbell = IPR_DOORBELL;
8566 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
8567 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
8568 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
8569 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
8570 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
8571 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
8572 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
8573 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
8574
8575 INIT_LIST_HEAD(&ioa_cfg->free_q);
8576 INIT_LIST_HEAD(&ioa_cfg->pending_q);
8577 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
8578 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
8579 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
8580 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
8581 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
8582 init_waitqueue_head(&ioa_cfg->reset_wait_q);
8583 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8584 ioa_cfg->sdt_state = INACTIVE;
8585
8586 ipr_initialize_bus_attr(ioa_cfg);
8587 ioa_cfg->max_devs_supported = ipr_max_devs;
8588
8589 if (ioa_cfg->sis64) {
8590 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
8591 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
8592 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
8593 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
8594 } else {
8595 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
8596 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
8597 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
8598 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
8599 }
8600 host->max_channel = IPR_MAX_BUS_TO_SCAN;
8601 host->unique_id = host->host_no;
8602 host->max_cmd_len = IPR_MAX_CDB_LEN;
8603 host->can_queue = ioa_cfg->max_cmds;
8604 pci_set_drvdata(pdev, ioa_cfg);
8605
8606 p = &ioa_cfg->chip_cfg->regs;
8607 t = &ioa_cfg->regs;
8608 base = ioa_cfg->hdw_dma_regs;
8609
8610 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
8611 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
8612 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
8613 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
8614 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
8615 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
8616 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
8617 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
8618 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
8619 t->ioarrin_reg = base + p->ioarrin_reg;
8620 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
8621 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
8622 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
8623 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
8624 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
8625 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
8626
8627 if (ioa_cfg->sis64) {
8628 t->init_feedback_reg = base + p->init_feedback_reg;
8629 t->dump_addr_reg = base + p->dump_addr_reg;
8630 t->dump_data_reg = base + p->dump_data_reg;
8631 t->endian_swap_reg = base + p->endian_swap_reg;
8632 }
8633 }
8634
8635 /**
8636 * ipr_get_chip_info - Find adapter chip information
8637 * @dev_id: PCI device id struct
8638 *
8639 * Return value:
8640 * ptr to chip information on success / NULL on failure
8641 **/
8642 static const struct ipr_chip_t * __devinit
8643 ipr_get_chip_info(const struct pci_device_id *dev_id)
8644 {
8645 int i;
8646
8647 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
8648 if (ipr_chip[i].vendor == dev_id->vendor &&
8649 ipr_chip[i].device == dev_id->device)
8650 return &ipr_chip[i];
8651 return NULL;
8652 }
8653
8654 /**
8655 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
8656 * @pdev: PCI device struct
8657 *
8658 * Description: Simply set the msi_received flag to 1 indicating that
8659 * Message Signaled Interrupts are supported.
8660 *
8661 * Return value:
8662 * 0 on success / non-zero on failure
8663 **/
8664 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
8665 {
8666 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
8667 unsigned long lock_flags = 0;
8668 irqreturn_t rc = IRQ_HANDLED;
8669
8670 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8671
8672 ioa_cfg->msi_received = 1;
8673 wake_up(&ioa_cfg->msi_wait_q);
8674
8675 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8676 return rc;
8677 }
8678
8679 /**
8680 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
8681 * @pdev: PCI device struct
8682 *
8683 * Description: The return value from pci_enable_msi() can not always be
8684 * trusted. This routine sets up and initiates a test interrupt to determine
8685 * if the interrupt is received via the ipr_test_intr() service routine.
8686 * If the tests fails, the driver will fall back to LSI.
8687 *
8688 * Return value:
8689 * 0 on success / non-zero on failure
8690 **/
8691 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
8692 struct pci_dev *pdev)
8693 {
8694 int rc;
8695 volatile u32 int_reg;
8696 unsigned long lock_flags = 0;
8697
8698 ENTER;
8699
8700 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8701 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8702 ioa_cfg->msi_received = 0;
8703 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8704 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
8705 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8706 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8707
8708 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
8709 if (rc) {
8710 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
8711 return rc;
8712 } else if (ipr_debug)
8713 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
8714
8715 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
8716 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8717 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
8718 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8719
8720 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8721 if (!ioa_cfg->msi_received) {
8722 /* MSI test failed */
8723 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
8724 rc = -EOPNOTSUPP;
8725 } else if (ipr_debug)
8726 dev_info(&pdev->dev, "MSI test succeeded.\n");
8727
8728 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8729
8730 free_irq(pdev->irq, ioa_cfg);
8731
8732 LEAVE;
8733
8734 return rc;
8735 }
8736
8737 /**
8738 * ipr_probe_ioa - Allocates memory and does first stage of initialization
8739 * @pdev: PCI device struct
8740 * @dev_id: PCI device id struct
8741 *
8742 * Return value:
8743 * 0 on success / non-zero on failure
8744 **/
8745 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
8746 const struct pci_device_id *dev_id)
8747 {
8748 struct ipr_ioa_cfg *ioa_cfg;
8749 struct Scsi_Host *host;
8750 unsigned long ipr_regs_pci;
8751 void __iomem *ipr_regs;
8752 int rc = PCIBIOS_SUCCESSFUL;
8753 volatile u32 mask, uproc, interrupts;
8754
8755 ENTER;
8756
8757 if ((rc = pci_enable_device(pdev))) {
8758 dev_err(&pdev->dev, "Cannot enable adapter\n");
8759 goto out;
8760 }
8761
8762 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
8763
8764 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
8765
8766 if (!host) {
8767 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
8768 rc = -ENOMEM;
8769 goto out_disable;
8770 }
8771
8772 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
8773 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
8774 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
8775 sata_port_info.flags, &ipr_sata_ops);
8776
8777 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
8778
8779 if (!ioa_cfg->ipr_chip) {
8780 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
8781 dev_id->vendor, dev_id->device);
8782 goto out_scsi_host_put;
8783 }
8784
8785 /* set SIS 32 or SIS 64 */
8786 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
8787 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
8788 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
8789 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
8790
8791 if (ipr_transop_timeout)
8792 ioa_cfg->transop_timeout = ipr_transop_timeout;
8793 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
8794 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
8795 else
8796 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
8797
8798 ioa_cfg->revid = pdev->revision;
8799
8800 ipr_regs_pci = pci_resource_start(pdev, 0);
8801
8802 rc = pci_request_regions(pdev, IPR_NAME);
8803 if (rc < 0) {
8804 dev_err(&pdev->dev,
8805 "Couldn't register memory range of registers\n");
8806 goto out_scsi_host_put;
8807 }
8808
8809 ipr_regs = pci_ioremap_bar(pdev, 0);
8810
8811 if (!ipr_regs) {
8812 dev_err(&pdev->dev,
8813 "Couldn't map memory range of registers\n");
8814 rc = -ENOMEM;
8815 goto out_release_regions;
8816 }
8817
8818 ioa_cfg->hdw_dma_regs = ipr_regs;
8819 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
8820 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
8821
8822 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
8823
8824 pci_set_master(pdev);
8825
8826 if (ioa_cfg->sis64) {
8827 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8828 if (rc < 0) {
8829 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
8830 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8831 }
8832
8833 } else
8834 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8835
8836 if (rc < 0) {
8837 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
8838 goto cleanup_nomem;
8839 }
8840
8841 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
8842 ioa_cfg->chip_cfg->cache_line_size);
8843
8844 if (rc != PCIBIOS_SUCCESSFUL) {
8845 dev_err(&pdev->dev, "Write of cache line size failed\n");
8846 rc = -EIO;
8847 goto cleanup_nomem;
8848 }
8849
8850 /* Enable MSI style interrupts if they are supported. */
8851 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
8852 rc = ipr_test_msi(ioa_cfg, pdev);
8853 if (rc == -EOPNOTSUPP)
8854 pci_disable_msi(pdev);
8855 else if (rc)
8856 goto out_msi_disable;
8857 else
8858 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
8859 } else if (ipr_debug)
8860 dev_info(&pdev->dev, "Cannot enable MSI.\n");
8861
8862 /* Save away PCI config space for use following IOA reset */
8863 rc = pci_save_state(pdev);
8864
8865 if (rc != PCIBIOS_SUCCESSFUL) {
8866 dev_err(&pdev->dev, "Failed to save PCI config space\n");
8867 rc = -EIO;
8868 goto out_msi_disable;
8869 }
8870
8871 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
8872 goto out_msi_disable;
8873
8874 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
8875 goto out_msi_disable;
8876
8877 if (ioa_cfg->sis64)
8878 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
8879 + ((sizeof(struct ipr_config_table_entry64)
8880 * ioa_cfg->max_devs_supported)));
8881 else
8882 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
8883 + ((sizeof(struct ipr_config_table_entry)
8884 * ioa_cfg->max_devs_supported)));
8885
8886 rc = ipr_alloc_mem(ioa_cfg);
8887 if (rc < 0) {
8888 dev_err(&pdev->dev,
8889 "Couldn't allocate enough memory for device driver!\n");
8890 goto out_msi_disable;
8891 }
8892
8893 /*
8894 * If HRRQ updated interrupt is not masked, or reset alert is set,
8895 * the card is in an unknown state and needs a hard reset
8896 */
8897 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
8898 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
8899 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
8900 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
8901 ioa_cfg->needs_hard_reset = 1;
8902 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
8903 ioa_cfg->needs_hard_reset = 1;
8904 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
8905 ioa_cfg->ioa_unit_checked = 1;
8906
8907 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8908 rc = request_irq(pdev->irq, ipr_isr,
8909 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
8910 IPR_NAME, ioa_cfg);
8911
8912 if (rc) {
8913 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
8914 pdev->irq, rc);
8915 goto cleanup_nolog;
8916 }
8917
8918 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
8919 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
8920 ioa_cfg->needs_warm_reset = 1;
8921 ioa_cfg->reset = ipr_reset_slot_reset;
8922 } else
8923 ioa_cfg->reset = ipr_reset_start_bist;
8924
8925 spin_lock(&ipr_driver_lock);
8926 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
8927 spin_unlock(&ipr_driver_lock);
8928
8929 LEAVE;
8930 out:
8931 return rc;
8932
8933 cleanup_nolog:
8934 ipr_free_mem(ioa_cfg);
8935 out_msi_disable:
8936 pci_disable_msi(pdev);
8937 cleanup_nomem:
8938 iounmap(ipr_regs);
8939 out_release_regions:
8940 pci_release_regions(pdev);
8941 out_scsi_host_put:
8942 scsi_host_put(host);
8943 out_disable:
8944 pci_disable_device(pdev);
8945 goto out;
8946 }
8947
8948 /**
8949 * ipr_scan_vsets - Scans for VSET devices
8950 * @ioa_cfg: ioa config struct
8951 *
8952 * Description: Since the VSET resources do not follow SAM in that we can have
8953 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
8954 *
8955 * Return value:
8956 * none
8957 **/
8958 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
8959 {
8960 int target, lun;
8961
8962 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
8963 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
8964 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
8965 }
8966
8967 /**
8968 * ipr_initiate_ioa_bringdown - Bring down an adapter
8969 * @ioa_cfg: ioa config struct
8970 * @shutdown_type: shutdown type
8971 *
8972 * Description: This function will initiate bringing down the adapter.
8973 * This consists of issuing an IOA shutdown to the adapter
8974 * to flush the cache, and running BIST.
8975 * If the caller needs to wait on the completion of the reset,
8976 * the caller must sleep on the reset_wait_q.
8977 *
8978 * Return value:
8979 * none
8980 **/
8981 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
8982 enum ipr_shutdown_type shutdown_type)
8983 {
8984 ENTER;
8985 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8986 ioa_cfg->sdt_state = ABORT_DUMP;
8987 ioa_cfg->reset_retries = 0;
8988 ioa_cfg->in_ioa_bringdown = 1;
8989 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
8990 LEAVE;
8991 }
8992
8993 /**
8994 * __ipr_remove - Remove a single adapter
8995 * @pdev: pci device struct
8996 *
8997 * Adapter hot plug remove entry point.
8998 *
8999 * Return value:
9000 * none
9001 **/
9002 static void __ipr_remove(struct pci_dev *pdev)
9003 {
9004 unsigned long host_lock_flags = 0;
9005 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9006 ENTER;
9007
9008 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9009 while(ioa_cfg->in_reset_reload) {
9010 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9011 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9012 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9013 }
9014
9015 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
9016
9017 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9018 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9019 flush_work_sync(&ioa_cfg->work_q);
9020 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9021
9022 spin_lock(&ipr_driver_lock);
9023 list_del(&ioa_cfg->queue);
9024 spin_unlock(&ipr_driver_lock);
9025
9026 if (ioa_cfg->sdt_state == ABORT_DUMP)
9027 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9028 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9029
9030 ipr_free_all_resources(ioa_cfg);
9031
9032 LEAVE;
9033 }
9034
9035 /**
9036 * ipr_remove - IOA hot plug remove entry point
9037 * @pdev: pci device struct
9038 *
9039 * Adapter hot plug remove entry point.
9040 *
9041 * Return value:
9042 * none
9043 **/
9044 static void __devexit ipr_remove(struct pci_dev *pdev)
9045 {
9046 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9047
9048 ENTER;
9049
9050 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9051 &ipr_trace_attr);
9052 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
9053 &ipr_dump_attr);
9054 scsi_remove_host(ioa_cfg->host);
9055
9056 __ipr_remove(pdev);
9057
9058 LEAVE;
9059 }
9060
9061 /**
9062 * ipr_probe - Adapter hot plug add entry point
9063 *
9064 * Return value:
9065 * 0 on success / non-zero on failure
9066 **/
9067 static int __devinit ipr_probe(struct pci_dev *pdev,
9068 const struct pci_device_id *dev_id)
9069 {
9070 struct ipr_ioa_cfg *ioa_cfg;
9071 int rc;
9072
9073 rc = ipr_probe_ioa(pdev, dev_id);
9074
9075 if (rc)
9076 return rc;
9077
9078 ioa_cfg = pci_get_drvdata(pdev);
9079 rc = ipr_probe_ioa_part2(ioa_cfg);
9080
9081 if (rc) {
9082 __ipr_remove(pdev);
9083 return rc;
9084 }
9085
9086 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
9087
9088 if (rc) {
9089 __ipr_remove(pdev);
9090 return rc;
9091 }
9092
9093 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
9094 &ipr_trace_attr);
9095
9096 if (rc) {
9097 scsi_remove_host(ioa_cfg->host);
9098 __ipr_remove(pdev);
9099 return rc;
9100 }
9101
9102 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
9103 &ipr_dump_attr);
9104
9105 if (rc) {
9106 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9107 &ipr_trace_attr);
9108 scsi_remove_host(ioa_cfg->host);
9109 __ipr_remove(pdev);
9110 return rc;
9111 }
9112
9113 scsi_scan_host(ioa_cfg->host);
9114 ipr_scan_vsets(ioa_cfg);
9115 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
9116 ioa_cfg->allow_ml_add_del = 1;
9117 ioa_cfg->host->max_channel = IPR_VSET_BUS;
9118 schedule_work(&ioa_cfg->work_q);
9119 return 0;
9120 }
9121
9122 /**
9123 * ipr_shutdown - Shutdown handler.
9124 * @pdev: pci device struct
9125 *
9126 * This function is invoked upon system shutdown/reboot. It will issue
9127 * an adapter shutdown to the adapter to flush the write cache.
9128 *
9129 * Return value:
9130 * none
9131 **/
9132 static void ipr_shutdown(struct pci_dev *pdev)
9133 {
9134 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9135 unsigned long lock_flags = 0;
9136
9137 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9138 while(ioa_cfg->in_reset_reload) {
9139 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9140 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9141 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9142 }
9143
9144 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
9145 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9146 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9147 }
9148
9149 static struct pci_device_id ipr_pci_table[] __devinitdata = {
9150 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9151 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
9152 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9153 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
9154 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9155 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
9156 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9157 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
9158 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9159 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
9160 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9161 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
9162 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9163 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
9164 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9165 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
9166 IPR_USE_LONG_TRANSOP_TIMEOUT },
9167 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9168 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9169 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9170 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9171 IPR_USE_LONG_TRANSOP_TIMEOUT },
9172 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9173 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9174 IPR_USE_LONG_TRANSOP_TIMEOUT },
9175 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9176 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9177 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9178 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9179 IPR_USE_LONG_TRANSOP_TIMEOUT},
9180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9181 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9182 IPR_USE_LONG_TRANSOP_TIMEOUT },
9183 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9184 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
9185 IPR_USE_LONG_TRANSOP_TIMEOUT },
9186 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9187 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
9188 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9189 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
9190 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9191 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
9192 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
9193 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
9194 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
9195 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9196 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
9197 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9198 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
9199 IPR_USE_LONG_TRANSOP_TIMEOUT },
9200 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9201 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
9202 IPR_USE_LONG_TRANSOP_TIMEOUT },
9203 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9204 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
9205 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9206 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
9207 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9208 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
9209 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9210 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
9211 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9212 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
9213 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9214 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
9215 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9216 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
9217 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9218 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
9219 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9220 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
9221 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9222 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
9223 { }
9224 };
9225 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
9226
9227 static struct pci_error_handlers ipr_err_handler = {
9228 .error_detected = ipr_pci_error_detected,
9229 .slot_reset = ipr_pci_slot_reset,
9230 };
9231
9232 static struct pci_driver ipr_driver = {
9233 .name = IPR_NAME,
9234 .id_table = ipr_pci_table,
9235 .probe = ipr_probe,
9236 .remove = __devexit_p(ipr_remove),
9237 .shutdown = ipr_shutdown,
9238 .err_handler = &ipr_err_handler,
9239 };
9240
9241 /**
9242 * ipr_halt_done - Shutdown prepare completion
9243 *
9244 * Return value:
9245 * none
9246 **/
9247 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9248 {
9249 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9250
9251 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
9252 }
9253
9254 /**
9255 * ipr_halt - Issue shutdown prepare to all adapters
9256 *
9257 * Return value:
9258 * NOTIFY_OK on success / NOTIFY_DONE on failure
9259 **/
9260 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9261 {
9262 struct ipr_cmnd *ipr_cmd;
9263 struct ipr_ioa_cfg *ioa_cfg;
9264 unsigned long flags = 0;
9265
9266 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
9267 return NOTIFY_DONE;
9268
9269 spin_lock(&ipr_driver_lock);
9270
9271 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
9272 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9273 if (!ioa_cfg->allow_cmds) {
9274 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9275 continue;
9276 }
9277
9278 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9279 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9280 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9281 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9282 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
9283
9284 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
9285 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9286 }
9287 spin_unlock(&ipr_driver_lock);
9288
9289 return NOTIFY_OK;
9290 }
9291
9292 static struct notifier_block ipr_notifier = {
9293 ipr_halt, NULL, 0
9294 };
9295
9296 /**
9297 * ipr_init - Module entry point
9298 *
9299 * Return value:
9300 * 0 on success / negative value on failure
9301 **/
9302 static int __init ipr_init(void)
9303 {
9304 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
9305 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
9306
9307 register_reboot_notifier(&ipr_notifier);
9308 return pci_register_driver(&ipr_driver);
9309 }
9310
9311 /**
9312 * ipr_exit - Module unload
9313 *
9314 * Module unload entry point.
9315 *
9316 * Return value:
9317 * none
9318 **/
9319 static void __exit ipr_exit(void)
9320 {
9321 unregister_reboot_notifier(&ipr_notifier);
9322 pci_unregister_driver(&ipr_driver);
9323 }
9324
9325 module_init(ipr_init);
9326 module_exit(ipr_exit);
Linux kernel - Deliverables
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