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Staging: Merge 2.6.37-rc2 into staging-next
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / ipr.c
blobfa60d7df44bed7154adf9aa784cecc937db64d23
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/ioport.h>
64 #include <linux/delay.h>
65 #include <linux/pci.h>
66 #include <linux/wait.h>
67 #include <linux/spinlock.h>
68 #include <linux/sched.h>
69 #include <linux/interrupt.h>
70 #include <linux/blkdev.h>
71 #include <linux/firmware.h>
72 #include <linux/module.h>
73 #include <linux/moduleparam.h>
74 #include <linux/libata.h>
75 #include <linux/hdreg.h>
76 #include <linux/reboot.h>
77 #include <linux/stringify.h>
78 #include <asm/io.h>
79 #include <asm/irq.h>
80 #include <asm/processor.h>
81 #include <scsi/scsi.h>
82 #include <scsi/scsi_host.h>
83 #include <scsi/scsi_tcq.h>
84 #include <scsi/scsi_eh.h>
85 #include <scsi/scsi_cmnd.h>
86 #include "ipr.h"
87
88 /*
89 * Global Data
90 */
91 static LIST_HEAD(ipr_ioa_head);
92 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
93 static unsigned int ipr_max_speed = 1;
94 static int ipr_testmode = 0;
95 static unsigned int ipr_fastfail = 0;
96 static unsigned int ipr_transop_timeout = 0;
97 static unsigned int ipr_debug = 0;
98 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
99 static unsigned int ipr_dual_ioa_raid = 1;
100 static DEFINE_SPINLOCK(ipr_driver_lock);
101
102 /* This table describes the differences between DMA controller chips */
103 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
104 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
105 .mailbox = 0x0042C,
106 .cache_line_size = 0x20,
107 {
108 .set_interrupt_mask_reg = 0x0022C,
109 .clr_interrupt_mask_reg = 0x00230,
110 .clr_interrupt_mask_reg32 = 0x00230,
111 .sense_interrupt_mask_reg = 0x0022C,
112 .sense_interrupt_mask_reg32 = 0x0022C,
113 .clr_interrupt_reg = 0x00228,
114 .clr_interrupt_reg32 = 0x00228,
115 .sense_interrupt_reg = 0x00224,
116 .sense_interrupt_reg32 = 0x00224,
117 .ioarrin_reg = 0x00404,
118 .sense_uproc_interrupt_reg = 0x00214,
119 .sense_uproc_interrupt_reg32 = 0x00214,
120 .set_uproc_interrupt_reg = 0x00214,
121 .set_uproc_interrupt_reg32 = 0x00214,
122 .clr_uproc_interrupt_reg = 0x00218,
123 .clr_uproc_interrupt_reg32 = 0x00218
124 }
125 },
126 { /* Snipe and Scamp */
127 .mailbox = 0x0052C,
128 .cache_line_size = 0x20,
129 {
130 .set_interrupt_mask_reg = 0x00288,
131 .clr_interrupt_mask_reg = 0x0028C,
132 .clr_interrupt_mask_reg32 = 0x0028C,
133 .sense_interrupt_mask_reg = 0x00288,
134 .sense_interrupt_mask_reg32 = 0x00288,
135 .clr_interrupt_reg = 0x00284,
136 .clr_interrupt_reg32 = 0x00284,
137 .sense_interrupt_reg = 0x00280,
138 .sense_interrupt_reg32 = 0x00280,
139 .ioarrin_reg = 0x00504,
140 .sense_uproc_interrupt_reg = 0x00290,
141 .sense_uproc_interrupt_reg32 = 0x00290,
142 .set_uproc_interrupt_reg = 0x00290,
143 .set_uproc_interrupt_reg32 = 0x00290,
144 .clr_uproc_interrupt_reg = 0x00294,
145 .clr_uproc_interrupt_reg32 = 0x00294
146 }
147 },
148 { /* CRoC */
149 .mailbox = 0x00040,
150 .cache_line_size = 0x20,
151 {
152 .set_interrupt_mask_reg = 0x00010,
153 .clr_interrupt_mask_reg = 0x00018,
154 .clr_interrupt_mask_reg32 = 0x0001C,
155 .sense_interrupt_mask_reg = 0x00010,
156 .sense_interrupt_mask_reg32 = 0x00014,
157 .clr_interrupt_reg = 0x00008,
158 .clr_interrupt_reg32 = 0x0000C,
159 .sense_interrupt_reg = 0x00000,
160 .sense_interrupt_reg32 = 0x00004,
161 .ioarrin_reg = 0x00070,
162 .sense_uproc_interrupt_reg = 0x00020,
163 .sense_uproc_interrupt_reg32 = 0x00024,
164 .set_uproc_interrupt_reg = 0x00020,
165 .set_uproc_interrupt_reg32 = 0x00024,
166 .clr_uproc_interrupt_reg = 0x00028,
167 .clr_uproc_interrupt_reg32 = 0x0002C,
168 .init_feedback_reg = 0x0005C,
169 .dump_addr_reg = 0x00064,
170 .dump_data_reg = 0x00068,
171 .endian_swap_reg = 0x00084
172 }
173 },
174 };
175
176 static const struct ipr_chip_t ipr_chip[] = {
177 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
179 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
183 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
186 };
187
188 static int ipr_max_bus_speeds [] = {
189 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
190 };
191
192 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
193 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
194 module_param_named(max_speed, ipr_max_speed, uint, 0);
195 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
196 module_param_named(log_level, ipr_log_level, uint, 0);
197 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
198 module_param_named(testmode, ipr_testmode, int, 0);
199 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
200 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
201 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
202 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
203 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
204 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
205 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
206 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
207 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
208 module_param_named(max_devs, ipr_max_devs, int, 0);
209 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
210 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
211 MODULE_LICENSE("GPL");
212 MODULE_VERSION(IPR_DRIVER_VERSION);
213
214 /* A constant array of IOASCs/URCs/Error Messages */
215 static const
216 struct ipr_error_table_t ipr_error_table[] = {
217 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
218 "8155: An unknown error was received"},
219 {0x00330000, 0, 0,
220 "Soft underlength error"},
221 {0x005A0000, 0, 0,
222 "Command to be cancelled not found"},
223 {0x00808000, 0, 0,
224 "Qualified success"},
225 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
226 "FFFE: Soft device bus error recovered by the IOA"},
227 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
228 "4101: Soft device bus fabric error"},
229 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
230 "FFFC: Logical block guard error recovered by the device"},
231 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
232 "FFFC: Logical block reference tag error recovered by the device"},
233 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
234 "4171: Recovered scatter list tag / sequence number error"},
235 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
236 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
237 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
238 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
239 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
240 "FFFD: Recovered logical block reference tag error detected by the IOA"},
241 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
242 "FFFD: Logical block guard error recovered by the IOA"},
243 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
244 "FFF9: Device sector reassign successful"},
245 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
246 "FFF7: Media error recovered by device rewrite procedures"},
247 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
248 "7001: IOA sector reassignment successful"},
249 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
250 "FFF9: Soft media error. Sector reassignment recommended"},
251 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
252 "FFF7: Media error recovered by IOA rewrite procedures"},
253 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
254 "FF3D: Soft PCI bus error recovered by the IOA"},
255 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
256 "FFF6: Device hardware error recovered by the IOA"},
257 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
258 "FFF6: Device hardware error recovered by the device"},
259 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
260 "FF3D: Soft IOA error recovered by the IOA"},
261 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
262 "FFFA: Undefined device response recovered by the IOA"},
263 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
264 "FFF6: Device bus error, message or command phase"},
265 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
266 "FFFE: Task Management Function failed"},
267 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
268 "FFF6: Failure prediction threshold exceeded"},
269 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
270 "8009: Impending cache battery pack failure"},
271 {0x02040400, 0, 0,
272 "34FF: Disk device format in progress"},
273 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
274 "9070: IOA requested reset"},
275 {0x023F0000, 0, 0,
276 "Synchronization required"},
277 {0x024E0000, 0, 0,
278 "No ready, IOA shutdown"},
279 {0x025A0000, 0, 0,
280 "Not ready, IOA has been shutdown"},
281 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
282 "3020: Storage subsystem configuration error"},
283 {0x03110B00, 0, 0,
284 "FFF5: Medium error, data unreadable, recommend reassign"},
285 {0x03110C00, 0, 0,
286 "7000: Medium error, data unreadable, do not reassign"},
287 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
288 "FFF3: Disk media format bad"},
289 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
290 "3002: Addressed device failed to respond to selection"},
291 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
292 "3100: Device bus error"},
293 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
294 "3109: IOA timed out a device command"},
295 {0x04088000, 0, 0,
296 "3120: SCSI bus is not operational"},
297 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
298 "4100: Hard device bus fabric error"},
299 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
300 "310C: Logical block guard error detected by the device"},
301 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
302 "310C: Logical block reference tag error detected by the device"},
303 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
304 "4170: Scatter list tag / sequence number error"},
305 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
306 "8150: Logical block CRC error on IOA to Host transfer"},
307 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
308 "4170: Logical block sequence number error on IOA to Host transfer"},
309 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
310 "310D: Logical block reference tag error detected by the IOA"},
311 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
312 "310D: Logical block guard error detected by the IOA"},
313 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
314 "9000: IOA reserved area data check"},
315 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
316 "9001: IOA reserved area invalid data pattern"},
317 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
318 "9002: IOA reserved area LRC error"},
319 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
320 "Hardware Error, IOA metadata access error"},
321 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
322 "102E: Out of alternate sectors for disk storage"},
323 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
324 "FFF4: Data transfer underlength error"},
325 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
326 "FFF4: Data transfer overlength error"},
327 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
328 "3400: Logical unit failure"},
329 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
330 "FFF4: Device microcode is corrupt"},
331 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
332 "8150: PCI bus error"},
333 {0x04430000, 1, 0,
334 "Unsupported device bus message received"},
335 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
336 "FFF4: Disk device problem"},
337 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
338 "8150: Permanent IOA failure"},
339 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
340 "3010: Disk device returned wrong response to IOA"},
341 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
342 "8151: IOA microcode error"},
343 {0x04448500, 0, 0,
344 "Device bus status error"},
345 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
346 "8157: IOA error requiring IOA reset to recover"},
347 {0x04448700, 0, 0,
348 "ATA device status error"},
349 {0x04490000, 0, 0,
350 "Message reject received from the device"},
351 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
352 "8008: A permanent cache battery pack failure occurred"},
353 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
354 "9090: Disk unit has been modified after the last known status"},
355 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
356 "9081: IOA detected device error"},
357 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
358 "9082: IOA detected device error"},
359 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
360 "3110: Device bus error, message or command phase"},
361 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
362 "3110: SAS Command / Task Management Function failed"},
363 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
364 "9091: Incorrect hardware configuration change has been detected"},
365 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
366 "9073: Invalid multi-adapter configuration"},
367 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
368 "4010: Incorrect connection between cascaded expanders"},
369 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
370 "4020: Connections exceed IOA design limits"},
371 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
372 "4030: Incorrect multipath connection"},
373 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
374 "4110: Unsupported enclosure function"},
375 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
376 "FFF4: Command to logical unit failed"},
377 {0x05240000, 1, 0,
378 "Illegal request, invalid request type or request packet"},
379 {0x05250000, 0, 0,
380 "Illegal request, invalid resource handle"},
381 {0x05258000, 0, 0,
382 "Illegal request, commands not allowed to this device"},
383 {0x05258100, 0, 0,
384 "Illegal request, command not allowed to a secondary adapter"},
385 {0x05258200, 0, 0,
386 "Illegal request, command not allowed to a non-optimized resource"},
387 {0x05260000, 0, 0,
388 "Illegal request, invalid field in parameter list"},
389 {0x05260100, 0, 0,
390 "Illegal request, parameter not supported"},
391 {0x05260200, 0, 0,
392 "Illegal request, parameter value invalid"},
393 {0x052C0000, 0, 0,
394 "Illegal request, command sequence error"},
395 {0x052C8000, 1, 0,
396 "Illegal request, dual adapter support not enabled"},
397 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
398 "9031: Array protection temporarily suspended, protection resuming"},
399 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
400 "9040: Array protection temporarily suspended, protection resuming"},
401 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
402 "3140: Device bus not ready to ready transition"},
403 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
404 "FFFB: SCSI bus was reset"},
405 {0x06290500, 0, 0,
406 "FFFE: SCSI bus transition to single ended"},
407 {0x06290600, 0, 0,
408 "FFFE: SCSI bus transition to LVD"},
409 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
410 "FFFB: SCSI bus was reset by another initiator"},
411 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
412 "3029: A device replacement has occurred"},
413 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
414 "9051: IOA cache data exists for a missing or failed device"},
415 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
416 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
417 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
418 "9025: Disk unit is not supported at its physical location"},
419 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
420 "3020: IOA detected a SCSI bus configuration error"},
421 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
422 "3150: SCSI bus configuration error"},
423 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
424 "9074: Asymmetric advanced function disk configuration"},
425 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
426 "4040: Incomplete multipath connection between IOA and enclosure"},
427 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
428 "4041: Incomplete multipath connection between enclosure and device"},
429 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
430 "9075: Incomplete multipath connection between IOA and remote IOA"},
431 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
432 "9076: Configuration error, missing remote IOA"},
433 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
434 "4050: Enclosure does not support a required multipath function"},
435 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
436 "4070: Logically bad block written on device"},
437 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
438 "9041: Array protection temporarily suspended"},
439 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
440 "9042: Corrupt array parity detected on specified device"},
441 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
442 "9030: Array no longer protected due to missing or failed disk unit"},
443 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
444 "9071: Link operational transition"},
445 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
446 "9072: Link not operational transition"},
447 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
448 "9032: Array exposed but still protected"},
449 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
450 "70DD: Device forced failed by disrupt device command"},
451 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
452 "4061: Multipath redundancy level got better"},
453 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
454 "4060: Multipath redundancy level got worse"},
455 {0x07270000, 0, 0,
456 "Failure due to other device"},
457 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
458 "9008: IOA does not support functions expected by devices"},
459 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
460 "9010: Cache data associated with attached devices cannot be found"},
461 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
462 "9011: Cache data belongs to devices other than those attached"},
463 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
464 "9020: Array missing 2 or more devices with only 1 device present"},
465 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
466 "9021: Array missing 2 or more devices with 2 or more devices present"},
467 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
468 "9022: Exposed array is missing a required device"},
469 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
470 "9023: Array member(s) not at required physical locations"},
471 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
472 "9024: Array not functional due to present hardware configuration"},
473 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
474 "9026: Array not functional due to present hardware configuration"},
475 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
476 "9027: Array is missing a device and parity is out of sync"},
477 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
478 "9028: Maximum number of arrays already exist"},
479 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
480 "9050: Required cache data cannot be located for a disk unit"},
481 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
482 "9052: Cache data exists for a device that has been modified"},
483 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
484 "9054: IOA resources not available due to previous problems"},
485 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
486 "9092: Disk unit requires initialization before use"},
487 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
488 "9029: Incorrect hardware configuration change has been detected"},
489 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
490 "9060: One or more disk pairs are missing from an array"},
491 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
492 "9061: One or more disks are missing from an array"},
493 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
494 "9062: One or more disks are missing from an array"},
495 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
496 "9063: Maximum number of functional arrays has been exceeded"},
497 {0x0B260000, 0, 0,
498 "Aborted command, invalid descriptor"},
499 {0x0B5A0000, 0, 0,
500 "Command terminated by host"}
501 };
502
503 static const struct ipr_ses_table_entry ipr_ses_table[] = {
504 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
505 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
506 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
507 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
508 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
509 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
510 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
511 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
512 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
513 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
514 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
515 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
516 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
517 };
518
519 /*
520 * Function Prototypes
521 */
522 static int ipr_reset_alert(struct ipr_cmnd *);
523 static void ipr_process_ccn(struct ipr_cmnd *);
524 static void ipr_process_error(struct ipr_cmnd *);
525 static void ipr_reset_ioa_job(struct ipr_cmnd *);
526 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
527 enum ipr_shutdown_type);
528
529 #ifdef CONFIG_SCSI_IPR_TRACE
530 /**
531 * ipr_trc_hook - Add a trace entry to the driver trace
532 * @ipr_cmd: ipr command struct
533 * @type: trace type
534 * @add_data: additional data
535 *
536 * Return value:
537 * none
538 **/
539 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
540 u8 type, u32 add_data)
541 {
542 struct ipr_trace_entry *trace_entry;
543 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
544
545 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
546 trace_entry->time = jiffies;
547 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
548 trace_entry->type = type;
549 if (ipr_cmd->ioa_cfg->sis64)
550 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
551 else
552 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
553 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
554 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
555 trace_entry->u.add_data = add_data;
556 }
557 #else
558 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
559 #endif
560
561 /**
562 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
563 * @ipr_cmd: ipr command struct
564 *
565 * Return value:
566 * none
567 **/
568 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
569 {
570 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
571 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
572 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
573 dma_addr_t dma_addr = ipr_cmd->dma_addr;
574
575 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
576 ioarcb->data_transfer_length = 0;
577 ioarcb->read_data_transfer_length = 0;
578 ioarcb->ioadl_len = 0;
579 ioarcb->read_ioadl_len = 0;
580
581 if (ipr_cmd->ioa_cfg->sis64) {
582 ioarcb->u.sis64_addr_data.data_ioadl_addr =
583 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
584 ioasa64->u.gata.status = 0;
585 } else {
586 ioarcb->write_ioadl_addr =
587 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
588 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
589 ioasa->u.gata.status = 0;
590 }
591
592 ioasa->hdr.ioasc = 0;
593 ioasa->hdr.residual_data_len = 0;
594 ipr_cmd->scsi_cmd = NULL;
595 ipr_cmd->qc = NULL;
596 ipr_cmd->sense_buffer[0] = 0;
597 ipr_cmd->dma_use_sg = 0;
598 }
599
600 /**
601 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
602 * @ipr_cmd: ipr command struct
603 *
604 * Return value:
605 * none
606 **/
607 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
608 {
609 ipr_reinit_ipr_cmnd(ipr_cmd);
610 ipr_cmd->u.scratch = 0;
611 ipr_cmd->sibling = NULL;
612 init_timer(&ipr_cmd->timer);
613 }
614
615 /**
616 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
617 * @ioa_cfg: ioa config struct
618 *
619 * Return value:
620 * pointer to ipr command struct
621 **/
622 static
623 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
624 {
625 struct ipr_cmnd *ipr_cmd;
626
627 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
628 list_del(&ipr_cmd->queue);
629 ipr_init_ipr_cmnd(ipr_cmd);
630
631 return ipr_cmd;
632 }
633
634 /**
635 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
636 * @ioa_cfg: ioa config struct
637 * @clr_ints: interrupts to clear
638 *
639 * This function masks all interrupts on the adapter, then clears the
640 * interrupts specified in the mask
641 *
642 * Return value:
643 * none
644 **/
645 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
646 u32 clr_ints)
647 {
648 volatile u32 int_reg;
649
650 /* Stop new interrupts */
651 ioa_cfg->allow_interrupts = 0;
652
653 /* Set interrupt mask to stop all new interrupts */
654 if (ioa_cfg->sis64)
655 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
656 else
657 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
658
659 /* Clear any pending interrupts */
660 if (ioa_cfg->sis64)
661 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
662 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
663 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
664 }
665
666 /**
667 * ipr_save_pcix_cmd_reg - Save PCI-X command register
668 * @ioa_cfg: ioa config struct
669 *
670 * Return value:
671 * 0 on success / -EIO on failure
672 **/
673 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
674 {
675 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
676
677 if (pcix_cmd_reg == 0)
678 return 0;
679
680 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
681 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
682 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
683 return -EIO;
684 }
685
686 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
687 return 0;
688 }
689
690 /**
691 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
692 * @ioa_cfg: ioa config struct
693 *
694 * Return value:
695 * 0 on success / -EIO on failure
696 **/
697 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
698 {
699 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
700
701 if (pcix_cmd_reg) {
702 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
703 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
704 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
705 return -EIO;
706 }
707 }
708
709 return 0;
710 }
711
712 /**
713 * ipr_sata_eh_done - done function for aborted SATA commands
714 * @ipr_cmd: ipr command struct
715 *
716 * This function is invoked for ops generated to SATA
717 * devices which are being aborted.
718 *
719 * Return value:
720 * none
721 **/
722 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
723 {
724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
725 struct ata_queued_cmd *qc = ipr_cmd->qc;
726 struct ipr_sata_port *sata_port = qc->ap->private_data;
727
728 qc->err_mask |= AC_ERR_OTHER;
729 sata_port->ioasa.status |= ATA_BUSY;
730 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
731 ata_qc_complete(qc);
732 }
733
734 /**
735 * ipr_scsi_eh_done - mid-layer done function for aborted ops
736 * @ipr_cmd: ipr command struct
737 *
738 * This function is invoked by the interrupt handler for
739 * ops generated by the SCSI mid-layer which are being aborted.
740 *
741 * Return value:
742 * none
743 **/
744 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
745 {
746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
748
749 scsi_cmd->result |= (DID_ERROR << 16);
750
751 scsi_dma_unmap(ipr_cmd->scsi_cmd);
752 scsi_cmd->scsi_done(scsi_cmd);
753 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
754 }
755
756 /**
757 * ipr_fail_all_ops - Fails all outstanding ops.
758 * @ioa_cfg: ioa config struct
759 *
760 * This function fails all outstanding ops.
761 *
762 * Return value:
763 * none
764 **/
765 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
766 {
767 struct ipr_cmnd *ipr_cmd, *temp;
768
769 ENTER;
770 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
771 list_del(&ipr_cmd->queue);
772
773 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
774 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
775
776 if (ipr_cmd->scsi_cmd)
777 ipr_cmd->done = ipr_scsi_eh_done;
778 else if (ipr_cmd->qc)
779 ipr_cmd->done = ipr_sata_eh_done;
780
781 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
782 del_timer(&ipr_cmd->timer);
783 ipr_cmd->done(ipr_cmd);
784 }
785
786 LEAVE;
787 }
788
789 /**
790 * ipr_send_command - Send driver initiated requests.
791 * @ipr_cmd: ipr command struct
792 *
793 * This function sends a command to the adapter using the correct write call.
794 * In the case of sis64, calculate the ioarcb size required. Then or in the
795 * appropriate bits.
796 *
797 * Return value:
798 * none
799 **/
800 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
801 {
802 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
803 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
804
805 if (ioa_cfg->sis64) {
806 /* The default size is 256 bytes */
807 send_dma_addr |= 0x1;
808
809 /* If the number of ioadls * size of ioadl > 128 bytes,
810 then use a 512 byte ioarcb */
811 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
812 send_dma_addr |= 0x4;
813 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
814 } else
815 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
816 }
817
818 /**
819 * ipr_do_req - Send driver initiated requests.
820 * @ipr_cmd: ipr command struct
821 * @done: done function
822 * @timeout_func: timeout function
823 * @timeout: timeout value
824 *
825 * This function sends the specified command to the adapter with the
826 * timeout given. The done function is invoked on command completion.
827 *
828 * Return value:
829 * none
830 **/
831 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
832 void (*done) (struct ipr_cmnd *),
833 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
834 {
835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
836
837 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
838
839 ipr_cmd->done = done;
840
841 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
842 ipr_cmd->timer.expires = jiffies + timeout;
843 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
844
845 add_timer(&ipr_cmd->timer);
846
847 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
848
849 mb();
850
851 ipr_send_command(ipr_cmd);
852 }
853
854 /**
855 * ipr_internal_cmd_done - Op done function for an internally generated op.
856 * @ipr_cmd: ipr command struct
857 *
858 * This function is the op done function for an internally generated,
859 * blocking op. It simply wakes the sleeping thread.
860 *
861 * Return value:
862 * none
863 **/
864 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
865 {
866 if (ipr_cmd->sibling)
867 ipr_cmd->sibling = NULL;
868 else
869 complete(&ipr_cmd->completion);
870 }
871
872 /**
873 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
874 * @ipr_cmd: ipr command struct
875 * @dma_addr: dma address
876 * @len: transfer length
877 * @flags: ioadl flag value
878 *
879 * This function initializes an ioadl in the case where there is only a single
880 * descriptor.
881 *
882 * Return value:
883 * nothing
884 **/
885 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
886 u32 len, int flags)
887 {
888 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
889 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
890
891 ipr_cmd->dma_use_sg = 1;
892
893 if (ipr_cmd->ioa_cfg->sis64) {
894 ioadl64->flags = cpu_to_be32(flags);
895 ioadl64->data_len = cpu_to_be32(len);
896 ioadl64->address = cpu_to_be64(dma_addr);
897
898 ipr_cmd->ioarcb.ioadl_len =
899 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
900 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
901 } else {
902 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
903 ioadl->address = cpu_to_be32(dma_addr);
904
905 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
906 ipr_cmd->ioarcb.read_ioadl_len =
907 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
908 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
909 } else {
910 ipr_cmd->ioarcb.ioadl_len =
911 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
912 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
913 }
914 }
915 }
916
917 /**
918 * ipr_send_blocking_cmd - Send command and sleep on its completion.
919 * @ipr_cmd: ipr command struct
920 * @timeout_func: function to invoke if command times out
921 * @timeout: timeout
922 *
923 * Return value:
924 * none
925 **/
926 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
927 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
928 u32 timeout)
929 {
930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
931
932 init_completion(&ipr_cmd->completion);
933 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
934
935 spin_unlock_irq(ioa_cfg->host->host_lock);
936 wait_for_completion(&ipr_cmd->completion);
937 spin_lock_irq(ioa_cfg->host->host_lock);
938 }
939
940 /**
941 * ipr_send_hcam - Send an HCAM to the adapter.
942 * @ioa_cfg: ioa config struct
943 * @type: HCAM type
944 * @hostrcb: hostrcb struct
945 *
946 * This function will send a Host Controlled Async command to the adapter.
947 * If HCAMs are currently not allowed to be issued to the adapter, it will
948 * place the hostrcb on the free queue.
949 *
950 * Return value:
951 * none
952 **/
953 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
954 struct ipr_hostrcb *hostrcb)
955 {
956 struct ipr_cmnd *ipr_cmd;
957 struct ipr_ioarcb *ioarcb;
958
959 if (ioa_cfg->allow_cmds) {
960 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
961 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
962 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
963
964 ipr_cmd->u.hostrcb = hostrcb;
965 ioarcb = &ipr_cmd->ioarcb;
966
967 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
968 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
969 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
970 ioarcb->cmd_pkt.cdb[1] = type;
971 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
972 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
973
974 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
975 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
976
977 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
978 ipr_cmd->done = ipr_process_ccn;
979 else
980 ipr_cmd->done = ipr_process_error;
981
982 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
983
984 mb();
985
986 ipr_send_command(ipr_cmd);
987 } else {
988 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
989 }
990 }
991
992 /**
993 * ipr_update_ata_class - Update the ata class in the resource entry
994 * @res: resource entry struct
995 * @proto: cfgte device bus protocol value
996 *
997 * Return value:
998 * none
999 **/
1000 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1001 {
1002 switch(proto) {
1003 case IPR_PROTO_SATA:
1004 case IPR_PROTO_SAS_STP:
1005 res->ata_class = ATA_DEV_ATA;
1006 break;
1007 case IPR_PROTO_SATA_ATAPI:
1008 case IPR_PROTO_SAS_STP_ATAPI:
1009 res->ata_class = ATA_DEV_ATAPI;
1010 break;
1011 default:
1012 res->ata_class = ATA_DEV_UNKNOWN;
1013 break;
1014 };
1015 }
1016
1017 /**
1018 * ipr_init_res_entry - Initialize a resource entry struct.
1019 * @res: resource entry struct
1020 * @cfgtew: config table entry wrapper struct
1021 *
1022 * Return value:
1023 * none
1024 **/
1025 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1026 struct ipr_config_table_entry_wrapper *cfgtew)
1027 {
1028 int found = 0;
1029 unsigned int proto;
1030 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1031 struct ipr_resource_entry *gscsi_res = NULL;
1032
1033 res->needs_sync_complete = 0;
1034 res->in_erp = 0;
1035 res->add_to_ml = 0;
1036 res->del_from_ml = 0;
1037 res->resetting_device = 0;
1038 res->sdev = NULL;
1039 res->sata_port = NULL;
1040
1041 if (ioa_cfg->sis64) {
1042 proto = cfgtew->u.cfgte64->proto;
1043 res->res_flags = cfgtew->u.cfgte64->res_flags;
1044 res->qmodel = IPR_QUEUEING_MODEL64(res);
1045 res->type = cfgtew->u.cfgte64->res_type;
1046
1047 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1048 sizeof(res->res_path));
1049
1050 res->bus = 0;
1051 res->lun = scsilun_to_int(&res->dev_lun);
1052
1053 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1054 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1055 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1056 found = 1;
1057 res->target = gscsi_res->target;
1058 break;
1059 }
1060 }
1061 if (!found) {
1062 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1063 ioa_cfg->max_devs_supported);
1064 set_bit(res->target, ioa_cfg->target_ids);
1065 }
1066
1067 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1068 sizeof(res->dev_lun.scsi_lun));
1069 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1070 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1071 res->target = 0;
1072 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1073 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1074 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1075 ioa_cfg->max_devs_supported);
1076 set_bit(res->target, ioa_cfg->array_ids);
1077 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1078 res->bus = IPR_VSET_VIRTUAL_BUS;
1079 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1080 ioa_cfg->max_devs_supported);
1081 set_bit(res->target, ioa_cfg->vset_ids);
1082 } else {
1083 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1084 ioa_cfg->max_devs_supported);
1085 set_bit(res->target, ioa_cfg->target_ids);
1086 }
1087 } else {
1088 proto = cfgtew->u.cfgte->proto;
1089 res->qmodel = IPR_QUEUEING_MODEL(res);
1090 res->flags = cfgtew->u.cfgte->flags;
1091 if (res->flags & IPR_IS_IOA_RESOURCE)
1092 res->type = IPR_RES_TYPE_IOAFP;
1093 else
1094 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1095
1096 res->bus = cfgtew->u.cfgte->res_addr.bus;
1097 res->target = cfgtew->u.cfgte->res_addr.target;
1098 res->lun = cfgtew->u.cfgte->res_addr.lun;
1099 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1100 }
1101
1102 ipr_update_ata_class(res, proto);
1103 }
1104
1105 /**
1106 * ipr_is_same_device - Determine if two devices are the same.
1107 * @res: resource entry struct
1108 * @cfgtew: config table entry wrapper struct
1109 *
1110 * Return value:
1111 * 1 if the devices are the same / 0 otherwise
1112 **/
1113 static int ipr_is_same_device(struct ipr_resource_entry *res,
1114 struct ipr_config_table_entry_wrapper *cfgtew)
1115 {
1116 if (res->ioa_cfg->sis64) {
1117 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1118 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1119 !memcmp(&res->lun, &cfgtew->u.cfgte64->lun,
1120 sizeof(cfgtew->u.cfgte64->lun))) {
1121 return 1;
1122 }
1123 } else {
1124 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1125 res->target == cfgtew->u.cfgte->res_addr.target &&
1126 res->lun == cfgtew->u.cfgte->res_addr.lun)
1127 return 1;
1128 }
1129
1130 return 0;
1131 }
1132
1133 /**
1134 * ipr_format_res_path - Format the resource path for printing.
1135 * @res_path: resource path
1136 * @buf: buffer
1137 *
1138 * Return value:
1139 * pointer to buffer
1140 **/
1141 static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
1142 {
1143 int i;
1144 char *p = buffer;
1145
1146 *p = '\0';
1147 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1148 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1149 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1150
1151 return buffer;
1152 }
1153
1154 /**
1155 * ipr_update_res_entry - Update the resource entry.
1156 * @res: resource entry struct
1157 * @cfgtew: config table entry wrapper struct
1158 *
1159 * Return value:
1160 * none
1161 **/
1162 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1163 struct ipr_config_table_entry_wrapper *cfgtew)
1164 {
1165 char buffer[IPR_MAX_RES_PATH_LENGTH];
1166 unsigned int proto;
1167 int new_path = 0;
1168
1169 if (res->ioa_cfg->sis64) {
1170 res->flags = cfgtew->u.cfgte64->flags;
1171 res->res_flags = cfgtew->u.cfgte64->res_flags;
1172 res->type = cfgtew->u.cfgte64->res_type;
1173
1174 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1175 sizeof(struct ipr_std_inq_data));
1176
1177 res->qmodel = IPR_QUEUEING_MODEL64(res);
1178 proto = cfgtew->u.cfgte64->proto;
1179 res->res_handle = cfgtew->u.cfgte64->res_handle;
1180 res->dev_id = cfgtew->u.cfgte64->dev_id;
1181
1182 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1183 sizeof(res->dev_lun.scsi_lun));
1184
1185 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1186 sizeof(res->res_path))) {
1187 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1188 sizeof(res->res_path));
1189 new_path = 1;
1190 }
1191
1192 if (res->sdev && new_path)
1193 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1194 ipr_format_res_path(res->res_path, buffer,
1195 sizeof(buffer)));
1196 } else {
1197 res->flags = cfgtew->u.cfgte->flags;
1198 if (res->flags & IPR_IS_IOA_RESOURCE)
1199 res->type = IPR_RES_TYPE_IOAFP;
1200 else
1201 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1202
1203 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1204 sizeof(struct ipr_std_inq_data));
1205
1206 res->qmodel = IPR_QUEUEING_MODEL(res);
1207 proto = cfgtew->u.cfgte->proto;
1208 res->res_handle = cfgtew->u.cfgte->res_handle;
1209 }
1210
1211 ipr_update_ata_class(res, proto);
1212 }
1213
1214 /**
1215 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1216 * for the resource.
1217 * @res: resource entry struct
1218 * @cfgtew: config table entry wrapper struct
1219 *
1220 * Return value:
1221 * none
1222 **/
1223 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1224 {
1225 struct ipr_resource_entry *gscsi_res = NULL;
1226 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1227
1228 if (!ioa_cfg->sis64)
1229 return;
1230
1231 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1232 clear_bit(res->target, ioa_cfg->array_ids);
1233 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1234 clear_bit(res->target, ioa_cfg->vset_ids);
1235 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1236 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1237 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1238 return;
1239 clear_bit(res->target, ioa_cfg->target_ids);
1240
1241 } else if (res->bus == 0)
1242 clear_bit(res->target, ioa_cfg->target_ids);
1243 }
1244
1245 /**
1246 * ipr_handle_config_change - Handle a config change from the adapter
1247 * @ioa_cfg: ioa config struct
1248 * @hostrcb: hostrcb
1249 *
1250 * Return value:
1251 * none
1252 **/
1253 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1254 struct ipr_hostrcb *hostrcb)
1255 {
1256 struct ipr_resource_entry *res = NULL;
1257 struct ipr_config_table_entry_wrapper cfgtew;
1258 __be32 cc_res_handle;
1259
1260 u32 is_ndn = 1;
1261
1262 if (ioa_cfg->sis64) {
1263 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1264 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1265 } else {
1266 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1267 cc_res_handle = cfgtew.u.cfgte->res_handle;
1268 }
1269
1270 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1271 if (res->res_handle == cc_res_handle) {
1272 is_ndn = 0;
1273 break;
1274 }
1275 }
1276
1277 if (is_ndn) {
1278 if (list_empty(&ioa_cfg->free_res_q)) {
1279 ipr_send_hcam(ioa_cfg,
1280 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1281 hostrcb);
1282 return;
1283 }
1284
1285 res = list_entry(ioa_cfg->free_res_q.next,
1286 struct ipr_resource_entry, queue);
1287
1288 list_del(&res->queue);
1289 ipr_init_res_entry(res, &cfgtew);
1290 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1291 }
1292
1293 ipr_update_res_entry(res, &cfgtew);
1294
1295 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1296 if (res->sdev) {
1297 res->del_from_ml = 1;
1298 res->res_handle = IPR_INVALID_RES_HANDLE;
1299 if (ioa_cfg->allow_ml_add_del)
1300 schedule_work(&ioa_cfg->work_q);
1301 } else {
1302 ipr_clear_res_target(res);
1303 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1304 }
1305 } else if (!res->sdev) {
1306 res->add_to_ml = 1;
1307 if (ioa_cfg->allow_ml_add_del)
1308 schedule_work(&ioa_cfg->work_q);
1309 }
1310
1311 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1312 }
1313
1314 /**
1315 * ipr_process_ccn - Op done function for a CCN.
1316 * @ipr_cmd: ipr command struct
1317 *
1318 * This function is the op done function for a configuration
1319 * change notification host controlled async from the adapter.
1320 *
1321 * Return value:
1322 * none
1323 **/
1324 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1325 {
1326 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1327 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1328 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1329
1330 list_del(&hostrcb->queue);
1331 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1332
1333 if (ioasc) {
1334 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1335 dev_err(&ioa_cfg->pdev->dev,
1336 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1337
1338 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1339 } else {
1340 ipr_handle_config_change(ioa_cfg, hostrcb);
1341 }
1342 }
1343
1344 /**
1345 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1346 * @i: index into buffer
1347 * @buf: string to modify
1348 *
1349 * This function will strip all trailing whitespace, pad the end
1350 * of the string with a single space, and NULL terminate the string.
1351 *
1352 * Return value:
1353 * new length of string
1354 **/
1355 static int strip_and_pad_whitespace(int i, char *buf)
1356 {
1357 while (i && buf[i] == ' ')
1358 i--;
1359 buf[i+1] = ' ';
1360 buf[i+2] = '\0';
1361 return i + 2;
1362 }
1363
1364 /**
1365 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1366 * @prefix: string to print at start of printk
1367 * @hostrcb: hostrcb pointer
1368 * @vpd: vendor/product id/sn struct
1369 *
1370 * Return value:
1371 * none
1372 **/
1373 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1374 struct ipr_vpd *vpd)
1375 {
1376 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1377 int i = 0;
1378
1379 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1380 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1381
1382 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1383 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1384
1385 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1386 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1387
1388 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1389 }
1390
1391 /**
1392 * ipr_log_vpd - Log the passed VPD to the error log.
1393 * @vpd: vendor/product id/sn struct
1394 *
1395 * Return value:
1396 * none
1397 **/
1398 static void ipr_log_vpd(struct ipr_vpd *vpd)
1399 {
1400 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1401 + IPR_SERIAL_NUM_LEN];
1402
1403 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1404 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1405 IPR_PROD_ID_LEN);
1406 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1407 ipr_err("Vendor/Product ID: %s\n", buffer);
1408
1409 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1410 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1411 ipr_err(" Serial Number: %s\n", buffer);
1412 }
1413
1414 /**
1415 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1416 * @prefix: string to print at start of printk
1417 * @hostrcb: hostrcb pointer
1418 * @vpd: vendor/product id/sn/wwn struct
1419 *
1420 * Return value:
1421 * none
1422 **/
1423 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1424 struct ipr_ext_vpd *vpd)
1425 {
1426 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1427 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1428 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1429 }
1430
1431 /**
1432 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1433 * @vpd: vendor/product id/sn/wwn struct
1434 *
1435 * Return value:
1436 * none
1437 **/
1438 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1439 {
1440 ipr_log_vpd(&vpd->vpd);
1441 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1442 be32_to_cpu(vpd->wwid[1]));
1443 }
1444
1445 /**
1446 * ipr_log_enhanced_cache_error - Log a cache error.
1447 * @ioa_cfg: ioa config struct
1448 * @hostrcb: hostrcb struct
1449 *
1450 * Return value:
1451 * none
1452 **/
1453 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1454 struct ipr_hostrcb *hostrcb)
1455 {
1456 struct ipr_hostrcb_type_12_error *error;
1457
1458 if (ioa_cfg->sis64)
1459 error = &hostrcb->hcam.u.error64.u.type_12_error;
1460 else
1461 error = &hostrcb->hcam.u.error.u.type_12_error;
1462
1463 ipr_err("-----Current Configuration-----\n");
1464 ipr_err("Cache Directory Card Information:\n");
1465 ipr_log_ext_vpd(&error->ioa_vpd);
1466 ipr_err("Adapter Card Information:\n");
1467 ipr_log_ext_vpd(&error->cfc_vpd);
1468
1469 ipr_err("-----Expected Configuration-----\n");
1470 ipr_err("Cache Directory Card Information:\n");
1471 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1472 ipr_err("Adapter Card Information:\n");
1473 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1474
1475 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1476 be32_to_cpu(error->ioa_data[0]),
1477 be32_to_cpu(error->ioa_data[1]),
1478 be32_to_cpu(error->ioa_data[2]));
1479 }
1480
1481 /**
1482 * ipr_log_cache_error - Log a cache error.
1483 * @ioa_cfg: ioa config struct
1484 * @hostrcb: hostrcb struct
1485 *
1486 * Return value:
1487 * none
1488 **/
1489 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1490 struct ipr_hostrcb *hostrcb)
1491 {
1492 struct ipr_hostrcb_type_02_error *error =
1493 &hostrcb->hcam.u.error.u.type_02_error;
1494
1495 ipr_err("-----Current Configuration-----\n");
1496 ipr_err("Cache Directory Card Information:\n");
1497 ipr_log_vpd(&error->ioa_vpd);
1498 ipr_err("Adapter Card Information:\n");
1499 ipr_log_vpd(&error->cfc_vpd);
1500
1501 ipr_err("-----Expected Configuration-----\n");
1502 ipr_err("Cache Directory Card Information:\n");
1503 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1504 ipr_err("Adapter Card Information:\n");
1505 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1506
1507 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1508 be32_to_cpu(error->ioa_data[0]),
1509 be32_to_cpu(error->ioa_data[1]),
1510 be32_to_cpu(error->ioa_data[2]));
1511 }
1512
1513 /**
1514 * ipr_log_enhanced_config_error - Log a configuration error.
1515 * @ioa_cfg: ioa config struct
1516 * @hostrcb: hostrcb struct
1517 *
1518 * Return value:
1519 * none
1520 **/
1521 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1522 struct ipr_hostrcb *hostrcb)
1523 {
1524 int errors_logged, i;
1525 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1526 struct ipr_hostrcb_type_13_error *error;
1527
1528 error = &hostrcb->hcam.u.error.u.type_13_error;
1529 errors_logged = be32_to_cpu(error->errors_logged);
1530
1531 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1532 be32_to_cpu(error->errors_detected), errors_logged);
1533
1534 dev_entry = error->dev;
1535
1536 for (i = 0; i < errors_logged; i++, dev_entry++) {
1537 ipr_err_separator;
1538
1539 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1540 ipr_log_ext_vpd(&dev_entry->vpd);
1541
1542 ipr_err("-----New Device Information-----\n");
1543 ipr_log_ext_vpd(&dev_entry->new_vpd);
1544
1545 ipr_err("Cache Directory Card Information:\n");
1546 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1547
1548 ipr_err("Adapter Card Information:\n");
1549 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1550 }
1551 }
1552
1553 /**
1554 * ipr_log_sis64_config_error - Log a device error.
1555 * @ioa_cfg: ioa config struct
1556 * @hostrcb: hostrcb struct
1557 *
1558 * Return value:
1559 * none
1560 **/
1561 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1562 struct ipr_hostrcb *hostrcb)
1563 {
1564 int errors_logged, i;
1565 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1566 struct ipr_hostrcb_type_23_error *error;
1567 char buffer[IPR_MAX_RES_PATH_LENGTH];
1568
1569 error = &hostrcb->hcam.u.error64.u.type_23_error;
1570 errors_logged = be32_to_cpu(error->errors_logged);
1571
1572 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1573 be32_to_cpu(error->errors_detected), errors_logged);
1574
1575 dev_entry = error->dev;
1576
1577 for (i = 0; i < errors_logged; i++, dev_entry++) {
1578 ipr_err_separator;
1579
1580 ipr_err("Device %d : %s", i + 1,
1581 ipr_format_res_path(dev_entry->res_path, buffer,
1582 sizeof(buffer)));
1583 ipr_log_ext_vpd(&dev_entry->vpd);
1584
1585 ipr_err("-----New Device Information-----\n");
1586 ipr_log_ext_vpd(&dev_entry->new_vpd);
1587
1588 ipr_err("Cache Directory Card Information:\n");
1589 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1590
1591 ipr_err("Adapter Card Information:\n");
1592 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1593 }
1594 }
1595
1596 /**
1597 * ipr_log_config_error - Log a configuration error.
1598 * @ioa_cfg: ioa config struct
1599 * @hostrcb: hostrcb struct
1600 *
1601 * Return value:
1602 * none
1603 **/
1604 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1605 struct ipr_hostrcb *hostrcb)
1606 {
1607 int errors_logged, i;
1608 struct ipr_hostrcb_device_data_entry *dev_entry;
1609 struct ipr_hostrcb_type_03_error *error;
1610
1611 error = &hostrcb->hcam.u.error.u.type_03_error;
1612 errors_logged = be32_to_cpu(error->errors_logged);
1613
1614 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1615 be32_to_cpu(error->errors_detected), errors_logged);
1616
1617 dev_entry = error->dev;
1618
1619 for (i = 0; i < errors_logged; i++, dev_entry++) {
1620 ipr_err_separator;
1621
1622 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1623 ipr_log_vpd(&dev_entry->vpd);
1624
1625 ipr_err("-----New Device Information-----\n");
1626 ipr_log_vpd(&dev_entry->new_vpd);
1627
1628 ipr_err("Cache Directory Card Information:\n");
1629 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1630
1631 ipr_err("Adapter Card Information:\n");
1632 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1633
1634 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1635 be32_to_cpu(dev_entry->ioa_data[0]),
1636 be32_to_cpu(dev_entry->ioa_data[1]),
1637 be32_to_cpu(dev_entry->ioa_data[2]),
1638 be32_to_cpu(dev_entry->ioa_data[3]),
1639 be32_to_cpu(dev_entry->ioa_data[4]));
1640 }
1641 }
1642
1643 /**
1644 * ipr_log_enhanced_array_error - Log an array configuration error.
1645 * @ioa_cfg: ioa config struct
1646 * @hostrcb: hostrcb struct
1647 *
1648 * Return value:
1649 * none
1650 **/
1651 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1652 struct ipr_hostrcb *hostrcb)
1653 {
1654 int i, num_entries;
1655 struct ipr_hostrcb_type_14_error *error;
1656 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1657 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1658
1659 error = &hostrcb->hcam.u.error.u.type_14_error;
1660
1661 ipr_err_separator;
1662
1663 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1664 error->protection_level,
1665 ioa_cfg->host->host_no,
1666 error->last_func_vset_res_addr.bus,
1667 error->last_func_vset_res_addr.target,
1668 error->last_func_vset_res_addr.lun);
1669
1670 ipr_err_separator;
1671
1672 array_entry = error->array_member;
1673 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1674 ARRAY_SIZE(error->array_member));
1675
1676 for (i = 0; i < num_entries; i++, array_entry++) {
1677 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1678 continue;
1679
1680 if (be32_to_cpu(error->exposed_mode_adn) == i)
1681 ipr_err("Exposed Array Member %d:\n", i);
1682 else
1683 ipr_err("Array Member %d:\n", i);
1684
1685 ipr_log_ext_vpd(&array_entry->vpd);
1686 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1687 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1688 "Expected Location");
1689
1690 ipr_err_separator;
1691 }
1692 }
1693
1694 /**
1695 * ipr_log_array_error - Log an array configuration error.
1696 * @ioa_cfg: ioa config struct
1697 * @hostrcb: hostrcb struct
1698 *
1699 * Return value:
1700 * none
1701 **/
1702 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1703 struct ipr_hostrcb *hostrcb)
1704 {
1705 int i;
1706 struct ipr_hostrcb_type_04_error *error;
1707 struct ipr_hostrcb_array_data_entry *array_entry;
1708 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1709
1710 error = &hostrcb->hcam.u.error.u.type_04_error;
1711
1712 ipr_err_separator;
1713
1714 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1715 error->protection_level,
1716 ioa_cfg->host->host_no,
1717 error->last_func_vset_res_addr.bus,
1718 error->last_func_vset_res_addr.target,
1719 error->last_func_vset_res_addr.lun);
1720
1721 ipr_err_separator;
1722
1723 array_entry = error->array_member;
1724
1725 for (i = 0; i < 18; i++) {
1726 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1727 continue;
1728
1729 if (be32_to_cpu(error->exposed_mode_adn) == i)
1730 ipr_err("Exposed Array Member %d:\n", i);
1731 else
1732 ipr_err("Array Member %d:\n", i);
1733
1734 ipr_log_vpd(&array_entry->vpd);
1735
1736 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1737 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1738 "Expected Location");
1739
1740 ipr_err_separator;
1741
1742 if (i == 9)
1743 array_entry = error->array_member2;
1744 else
1745 array_entry++;
1746 }
1747 }
1748
1749 /**
1750 * ipr_log_hex_data - Log additional hex IOA error data.
1751 * @ioa_cfg: ioa config struct
1752 * @data: IOA error data
1753 * @len: data length
1754 *
1755 * Return value:
1756 * none
1757 **/
1758 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1759 {
1760 int i;
1761
1762 if (len == 0)
1763 return;
1764
1765 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1766 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1767
1768 for (i = 0; i < len / 4; i += 4) {
1769 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1770 be32_to_cpu(data[i]),
1771 be32_to_cpu(data[i+1]),
1772 be32_to_cpu(data[i+2]),
1773 be32_to_cpu(data[i+3]));
1774 }
1775 }
1776
1777 /**
1778 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1779 * @ioa_cfg: ioa config struct
1780 * @hostrcb: hostrcb struct
1781 *
1782 * Return value:
1783 * none
1784 **/
1785 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1786 struct ipr_hostrcb *hostrcb)
1787 {
1788 struct ipr_hostrcb_type_17_error *error;
1789
1790 if (ioa_cfg->sis64)
1791 error = &hostrcb->hcam.u.error64.u.type_17_error;
1792 else
1793 error = &hostrcb->hcam.u.error.u.type_17_error;
1794
1795 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1796 strim(error->failure_reason);
1797
1798 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1799 be32_to_cpu(hostrcb->hcam.u.error.prc));
1800 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1801 ipr_log_hex_data(ioa_cfg, error->data,
1802 be32_to_cpu(hostrcb->hcam.length) -
1803 (offsetof(struct ipr_hostrcb_error, u) +
1804 offsetof(struct ipr_hostrcb_type_17_error, data)));
1805 }
1806
1807 /**
1808 * ipr_log_dual_ioa_error - Log a dual adapter error.
1809 * @ioa_cfg: ioa config struct
1810 * @hostrcb: hostrcb struct
1811 *
1812 * Return value:
1813 * none
1814 **/
1815 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1816 struct ipr_hostrcb *hostrcb)
1817 {
1818 struct ipr_hostrcb_type_07_error *error;
1819
1820 error = &hostrcb->hcam.u.error.u.type_07_error;
1821 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1822 strim(error->failure_reason);
1823
1824 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1825 be32_to_cpu(hostrcb->hcam.u.error.prc));
1826 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1827 ipr_log_hex_data(ioa_cfg, error->data,
1828 be32_to_cpu(hostrcb->hcam.length) -
1829 (offsetof(struct ipr_hostrcb_error, u) +
1830 offsetof(struct ipr_hostrcb_type_07_error, data)));
1831 }
1832
1833 static const struct {
1834 u8 active;
1835 char *desc;
1836 } path_active_desc[] = {
1837 { IPR_PATH_NO_INFO, "Path" },
1838 { IPR_PATH_ACTIVE, "Active path" },
1839 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1840 };
1841
1842 static const struct {
1843 u8 state;
1844 char *desc;
1845 } path_state_desc[] = {
1846 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1847 { IPR_PATH_HEALTHY, "is healthy" },
1848 { IPR_PATH_DEGRADED, "is degraded" },
1849 { IPR_PATH_FAILED, "is failed" }
1850 };
1851
1852 /**
1853 * ipr_log_fabric_path - Log a fabric path error
1854 * @hostrcb: hostrcb struct
1855 * @fabric: fabric descriptor
1856 *
1857 * Return value:
1858 * none
1859 **/
1860 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1861 struct ipr_hostrcb_fabric_desc *fabric)
1862 {
1863 int i, j;
1864 u8 path_state = fabric->path_state;
1865 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1866 u8 state = path_state & IPR_PATH_STATE_MASK;
1867
1868 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1869 if (path_active_desc[i].active != active)
1870 continue;
1871
1872 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1873 if (path_state_desc[j].state != state)
1874 continue;
1875
1876 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1877 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1878 path_active_desc[i].desc, path_state_desc[j].desc,
1879 fabric->ioa_port);
1880 } else if (fabric->cascaded_expander == 0xff) {
1881 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1882 path_active_desc[i].desc, path_state_desc[j].desc,
1883 fabric->ioa_port, fabric->phy);
1884 } else if (fabric->phy == 0xff) {
1885 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1886 path_active_desc[i].desc, path_state_desc[j].desc,
1887 fabric->ioa_port, fabric->cascaded_expander);
1888 } else {
1889 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1890 path_active_desc[i].desc, path_state_desc[j].desc,
1891 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1892 }
1893 return;
1894 }
1895 }
1896
1897 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1898 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1899 }
1900
1901 /**
1902 * ipr_log64_fabric_path - Log a fabric path error
1903 * @hostrcb: hostrcb struct
1904 * @fabric: fabric descriptor
1905 *
1906 * Return value:
1907 * none
1908 **/
1909 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1910 struct ipr_hostrcb64_fabric_desc *fabric)
1911 {
1912 int i, j;
1913 u8 path_state = fabric->path_state;
1914 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1915 u8 state = path_state & IPR_PATH_STATE_MASK;
1916 char buffer[IPR_MAX_RES_PATH_LENGTH];
1917
1918 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1919 if (path_active_desc[i].active != active)
1920 continue;
1921
1922 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1923 if (path_state_desc[j].state != state)
1924 continue;
1925
1926 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
1927 path_active_desc[i].desc, path_state_desc[j].desc,
1928 ipr_format_res_path(fabric->res_path, buffer,
1929 sizeof(buffer)));
1930 return;
1931 }
1932 }
1933
1934 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
1935 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer)));
1936 }
1937
1938 static const struct {
1939 u8 type;
1940 char *desc;
1941 } path_type_desc[] = {
1942 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1943 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1944 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1945 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1946 };
1947
1948 static const struct {
1949 u8 status;
1950 char *desc;
1951 } path_status_desc[] = {
1952 { IPR_PATH_CFG_NO_PROB, "Functional" },
1953 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1954 { IPR_PATH_CFG_FAILED, "Failed" },
1955 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1956 { IPR_PATH_NOT_DETECTED, "Missing" },
1957 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1958 };
1959
1960 static const char *link_rate[] = {
1961 "unknown",
1962 "disabled",
1963 "phy reset problem",
1964 "spinup hold",
1965 "port selector",
1966 "unknown",
1967 "unknown",
1968 "unknown",
1969 "1.5Gbps",
1970 "3.0Gbps",
1971 "unknown",
1972 "unknown",
1973 "unknown",
1974 "unknown",
1975 "unknown",
1976 "unknown"
1977 };
1978
1979 /**
1980 * ipr_log_path_elem - Log a fabric path element.
1981 * @hostrcb: hostrcb struct
1982 * @cfg: fabric path element struct
1983 *
1984 * Return value:
1985 * none
1986 **/
1987 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1988 struct ipr_hostrcb_config_element *cfg)
1989 {
1990 int i, j;
1991 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1992 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1993
1994 if (type == IPR_PATH_CFG_NOT_EXIST)
1995 return;
1996
1997 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1998 if (path_type_desc[i].type != type)
1999 continue;
2000
2001 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2002 if (path_status_desc[j].status != status)
2003 continue;
2004
2005 if (type == IPR_PATH_CFG_IOA_PORT) {
2006 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2007 path_status_desc[j].desc, path_type_desc[i].desc,
2008 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2009 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2010 } else {
2011 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2012 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2013 path_status_desc[j].desc, path_type_desc[i].desc,
2014 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2015 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2016 } else if (cfg->cascaded_expander == 0xff) {
2017 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2018 "WWN=%08X%08X\n", path_status_desc[j].desc,
2019 path_type_desc[i].desc, cfg->phy,
2020 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2021 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2022 } else if (cfg->phy == 0xff) {
2023 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2024 "WWN=%08X%08X\n", path_status_desc[j].desc,
2025 path_type_desc[i].desc, cfg->cascaded_expander,
2026 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2027 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2028 } else {
2029 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2030 "WWN=%08X%08X\n", path_status_desc[j].desc,
2031 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2032 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2033 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2034 }
2035 }
2036 return;
2037 }
2038 }
2039
2040 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2041 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2042 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2043 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2044 }
2045
2046 /**
2047 * ipr_log64_path_elem - Log a fabric path element.
2048 * @hostrcb: hostrcb struct
2049 * @cfg: fabric path element struct
2050 *
2051 * Return value:
2052 * none
2053 **/
2054 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2055 struct ipr_hostrcb64_config_element *cfg)
2056 {
2057 int i, j;
2058 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2059 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2060 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2061 char buffer[IPR_MAX_RES_PATH_LENGTH];
2062
2063 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2064 return;
2065
2066 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2067 if (path_type_desc[i].type != type)
2068 continue;
2069
2070 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2071 if (path_status_desc[j].status != status)
2072 continue;
2073
2074 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2075 path_status_desc[j].desc, path_type_desc[i].desc,
2076 ipr_format_res_path(cfg->res_path, buffer,
2077 sizeof(buffer)),
2078 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2079 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2080 return;
2081 }
2082 }
2083 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2084 "WWN=%08X%08X\n", cfg->type_status,
2085 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)),
2086 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2087 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2088 }
2089
2090 /**
2091 * ipr_log_fabric_error - Log a fabric error.
2092 * @ioa_cfg: ioa config struct
2093 * @hostrcb: hostrcb struct
2094 *
2095 * Return value:
2096 * none
2097 **/
2098 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2099 struct ipr_hostrcb *hostrcb)
2100 {
2101 struct ipr_hostrcb_type_20_error *error;
2102 struct ipr_hostrcb_fabric_desc *fabric;
2103 struct ipr_hostrcb_config_element *cfg;
2104 int i, add_len;
2105
2106 error = &hostrcb->hcam.u.error.u.type_20_error;
2107 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2108 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2109
2110 add_len = be32_to_cpu(hostrcb->hcam.length) -
2111 (offsetof(struct ipr_hostrcb_error, u) +
2112 offsetof(struct ipr_hostrcb_type_20_error, desc));
2113
2114 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2115 ipr_log_fabric_path(hostrcb, fabric);
2116 for_each_fabric_cfg(fabric, cfg)
2117 ipr_log_path_elem(hostrcb, cfg);
2118
2119 add_len -= be16_to_cpu(fabric->length);
2120 fabric = (struct ipr_hostrcb_fabric_desc *)
2121 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2122 }
2123
2124 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2125 }
2126
2127 /**
2128 * ipr_log_sis64_array_error - Log a sis64 array error.
2129 * @ioa_cfg: ioa config struct
2130 * @hostrcb: hostrcb struct
2131 *
2132 * Return value:
2133 * none
2134 **/
2135 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_hostrcb *hostrcb)
2137 {
2138 int i, num_entries;
2139 struct ipr_hostrcb_type_24_error *error;
2140 struct ipr_hostrcb64_array_data_entry *array_entry;
2141 char buffer[IPR_MAX_RES_PATH_LENGTH];
2142 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2143
2144 error = &hostrcb->hcam.u.error64.u.type_24_error;
2145
2146 ipr_err_separator;
2147
2148 ipr_err("RAID %s Array Configuration: %s\n",
2149 error->protection_level,
2150 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer)));
2151
2152 ipr_err_separator;
2153
2154 array_entry = error->array_member;
2155 num_entries = min_t(u32, error->num_entries,
2156 ARRAY_SIZE(error->array_member));
2157
2158 for (i = 0; i < num_entries; i++, array_entry++) {
2159
2160 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2161 continue;
2162
2163 if (error->exposed_mode_adn == i)
2164 ipr_err("Exposed Array Member %d:\n", i);
2165 else
2166 ipr_err("Array Member %d:\n", i);
2167
2168 ipr_err("Array Member %d:\n", i);
2169 ipr_log_ext_vpd(&array_entry->vpd);
2170 ipr_err("Current Location: %s\n",
2171 ipr_format_res_path(array_entry->res_path, buffer,
2172 sizeof(buffer)));
2173 ipr_err("Expected Location: %s\n",
2174 ipr_format_res_path(array_entry->expected_res_path,
2175 buffer, sizeof(buffer)));
2176
2177 ipr_err_separator;
2178 }
2179 }
2180
2181 /**
2182 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2183 * @ioa_cfg: ioa config struct
2184 * @hostrcb: hostrcb struct
2185 *
2186 * Return value:
2187 * none
2188 **/
2189 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2190 struct ipr_hostrcb *hostrcb)
2191 {
2192 struct ipr_hostrcb_type_30_error *error;
2193 struct ipr_hostrcb64_fabric_desc *fabric;
2194 struct ipr_hostrcb64_config_element *cfg;
2195 int i, add_len;
2196
2197 error = &hostrcb->hcam.u.error64.u.type_30_error;
2198
2199 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2200 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2201
2202 add_len = be32_to_cpu(hostrcb->hcam.length) -
2203 (offsetof(struct ipr_hostrcb64_error, u) +
2204 offsetof(struct ipr_hostrcb_type_30_error, desc));
2205
2206 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2207 ipr_log64_fabric_path(hostrcb, fabric);
2208 for_each_fabric_cfg(fabric, cfg)
2209 ipr_log64_path_elem(hostrcb, cfg);
2210
2211 add_len -= be16_to_cpu(fabric->length);
2212 fabric = (struct ipr_hostrcb64_fabric_desc *)
2213 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2214 }
2215
2216 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2217 }
2218
2219 /**
2220 * ipr_log_generic_error - Log an adapter error.
2221 * @ioa_cfg: ioa config struct
2222 * @hostrcb: hostrcb struct
2223 *
2224 * Return value:
2225 * none
2226 **/
2227 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2228 struct ipr_hostrcb *hostrcb)
2229 {
2230 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2231 be32_to_cpu(hostrcb->hcam.length));
2232 }
2233
2234 /**
2235 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2236 * @ioasc: IOASC
2237 *
2238 * This function will return the index of into the ipr_error_table
2239 * for the specified IOASC. If the IOASC is not in the table,
2240 * 0 will be returned, which points to the entry used for unknown errors.
2241 *
2242 * Return value:
2243 * index into the ipr_error_table
2244 **/
2245 static u32 ipr_get_error(u32 ioasc)
2246 {
2247 int i;
2248
2249 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2250 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2251 return i;
2252
2253 return 0;
2254 }
2255
2256 /**
2257 * ipr_handle_log_data - Log an adapter error.
2258 * @ioa_cfg: ioa config struct
2259 * @hostrcb: hostrcb struct
2260 *
2261 * This function logs an adapter error to the system.
2262 *
2263 * Return value:
2264 * none
2265 **/
2266 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2267 struct ipr_hostrcb *hostrcb)
2268 {
2269 u32 ioasc;
2270 int error_index;
2271
2272 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2273 return;
2274
2275 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2276 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2277
2278 if (ioa_cfg->sis64)
2279 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2280 else
2281 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2282
2283 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2284 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2285 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2286 scsi_report_bus_reset(ioa_cfg->host,
2287 hostrcb->hcam.u.error.fd_res_addr.bus);
2288 }
2289
2290 error_index = ipr_get_error(ioasc);
2291
2292 if (!ipr_error_table[error_index].log_hcam)
2293 return;
2294
2295 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2296
2297 /* Set indication we have logged an error */
2298 ioa_cfg->errors_logged++;
2299
2300 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2301 return;
2302 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2303 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2304
2305 switch (hostrcb->hcam.overlay_id) {
2306 case IPR_HOST_RCB_OVERLAY_ID_2:
2307 ipr_log_cache_error(ioa_cfg, hostrcb);
2308 break;
2309 case IPR_HOST_RCB_OVERLAY_ID_3:
2310 ipr_log_config_error(ioa_cfg, hostrcb);
2311 break;
2312 case IPR_HOST_RCB_OVERLAY_ID_4:
2313 case IPR_HOST_RCB_OVERLAY_ID_6:
2314 ipr_log_array_error(ioa_cfg, hostrcb);
2315 break;
2316 case IPR_HOST_RCB_OVERLAY_ID_7:
2317 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2318 break;
2319 case IPR_HOST_RCB_OVERLAY_ID_12:
2320 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2321 break;
2322 case IPR_HOST_RCB_OVERLAY_ID_13:
2323 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2324 break;
2325 case IPR_HOST_RCB_OVERLAY_ID_14:
2326 case IPR_HOST_RCB_OVERLAY_ID_16:
2327 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2328 break;
2329 case IPR_HOST_RCB_OVERLAY_ID_17:
2330 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2331 break;
2332 case IPR_HOST_RCB_OVERLAY_ID_20:
2333 ipr_log_fabric_error(ioa_cfg, hostrcb);
2334 break;
2335 case IPR_HOST_RCB_OVERLAY_ID_23:
2336 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2337 break;
2338 case IPR_HOST_RCB_OVERLAY_ID_24:
2339 case IPR_HOST_RCB_OVERLAY_ID_26:
2340 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2341 break;
2342 case IPR_HOST_RCB_OVERLAY_ID_30:
2343 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2344 break;
2345 case IPR_HOST_RCB_OVERLAY_ID_1:
2346 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2347 default:
2348 ipr_log_generic_error(ioa_cfg, hostrcb);
2349 break;
2350 }
2351 }
2352
2353 /**
2354 * ipr_process_error - Op done function for an adapter error log.
2355 * @ipr_cmd: ipr command struct
2356 *
2357 * This function is the op done function for an error log host
2358 * controlled async from the adapter. It will log the error and
2359 * send the HCAM back to the adapter.
2360 *
2361 * Return value:
2362 * none
2363 **/
2364 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2365 {
2366 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2367 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2368 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2369 u32 fd_ioasc;
2370
2371 if (ioa_cfg->sis64)
2372 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2373 else
2374 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2375
2376 list_del(&hostrcb->queue);
2377 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2378
2379 if (!ioasc) {
2380 ipr_handle_log_data(ioa_cfg, hostrcb);
2381 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2382 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2383 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2384 dev_err(&ioa_cfg->pdev->dev,
2385 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2386 }
2387
2388 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2389 }
2390
2391 /**
2392 * ipr_timeout - An internally generated op has timed out.
2393 * @ipr_cmd: ipr command struct
2394 *
2395 * This function blocks host requests and initiates an
2396 * adapter reset.
2397 *
2398 * Return value:
2399 * none
2400 **/
2401 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2402 {
2403 unsigned long lock_flags = 0;
2404 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2405
2406 ENTER;
2407 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2408
2409 ioa_cfg->errors_logged++;
2410 dev_err(&ioa_cfg->pdev->dev,
2411 "Adapter being reset due to command timeout.\n");
2412
2413 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2414 ioa_cfg->sdt_state = GET_DUMP;
2415
2416 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2417 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2418
2419 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2420 LEAVE;
2421 }
2422
2423 /**
2424 * ipr_oper_timeout - Adapter timed out transitioning to operational
2425 * @ipr_cmd: ipr command struct
2426 *
2427 * This function blocks host requests and initiates an
2428 * adapter reset.
2429 *
2430 * Return value:
2431 * none
2432 **/
2433 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2434 {
2435 unsigned long lock_flags = 0;
2436 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2437
2438 ENTER;
2439 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2440
2441 ioa_cfg->errors_logged++;
2442 dev_err(&ioa_cfg->pdev->dev,
2443 "Adapter timed out transitioning to operational.\n");
2444
2445 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2446 ioa_cfg->sdt_state = GET_DUMP;
2447
2448 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2449 if (ipr_fastfail)
2450 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2451 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2452 }
2453
2454 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2455 LEAVE;
2456 }
2457
2458 /**
2459 * ipr_reset_reload - Reset/Reload the IOA
2460 * @ioa_cfg: ioa config struct
2461 * @shutdown_type: shutdown type
2462 *
2463 * This function resets the adapter and re-initializes it.
2464 * This function assumes that all new host commands have been stopped.
2465 * Return value:
2466 * SUCCESS / FAILED
2467 **/
2468 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
2469 enum ipr_shutdown_type shutdown_type)
2470 {
2471 if (!ioa_cfg->in_reset_reload)
2472 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
2473
2474 spin_unlock_irq(ioa_cfg->host->host_lock);
2475 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2476 spin_lock_irq(ioa_cfg->host->host_lock);
2477
2478 /* If we got hit with a host reset while we were already resetting
2479 the adapter for some reason, and the reset failed. */
2480 if (ioa_cfg->ioa_is_dead) {
2481 ipr_trace;
2482 return FAILED;
2483 }
2484
2485 return SUCCESS;
2486 }
2487
2488 /**
2489 * ipr_find_ses_entry - Find matching SES in SES table
2490 * @res: resource entry struct of SES
2491 *
2492 * Return value:
2493 * pointer to SES table entry / NULL on failure
2494 **/
2495 static const struct ipr_ses_table_entry *
2496 ipr_find_ses_entry(struct ipr_resource_entry *res)
2497 {
2498 int i, j, matches;
2499 struct ipr_std_inq_vpids *vpids;
2500 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2501
2502 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2503 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2504 if (ste->compare_product_id_byte[j] == 'X') {
2505 vpids = &res->std_inq_data.vpids;
2506 if (vpids->product_id[j] == ste->product_id[j])
2507 matches++;
2508 else
2509 break;
2510 } else
2511 matches++;
2512 }
2513
2514 if (matches == IPR_PROD_ID_LEN)
2515 return ste;
2516 }
2517
2518 return NULL;
2519 }
2520
2521 /**
2522 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2523 * @ioa_cfg: ioa config struct
2524 * @bus: SCSI bus
2525 * @bus_width: bus width
2526 *
2527 * Return value:
2528 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2529 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2530 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2531 * max 160MHz = max 320MB/sec).
2532 **/
2533 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2534 {
2535 struct ipr_resource_entry *res;
2536 const struct ipr_ses_table_entry *ste;
2537 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2538
2539 /* Loop through each config table entry in the config table buffer */
2540 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2541 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2542 continue;
2543
2544 if (bus != res->bus)
2545 continue;
2546
2547 if (!(ste = ipr_find_ses_entry(res)))
2548 continue;
2549
2550 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2551 }
2552
2553 return max_xfer_rate;
2554 }
2555
2556 /**
2557 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2558 * @ioa_cfg: ioa config struct
2559 * @max_delay: max delay in micro-seconds to wait
2560 *
2561 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2562 *
2563 * Return value:
2564 * 0 on success / other on failure
2565 **/
2566 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2567 {
2568 volatile u32 pcii_reg;
2569 int delay = 1;
2570
2571 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2572 while (delay < max_delay) {
2573 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2574
2575 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2576 return 0;
2577
2578 /* udelay cannot be used if delay is more than a few milliseconds */
2579 if ((delay / 1000) > MAX_UDELAY_MS)
2580 mdelay(delay / 1000);
2581 else
2582 udelay(delay);
2583
2584 delay += delay;
2585 }
2586 return -EIO;
2587 }
2588
2589 /**
2590 * ipr_get_sis64_dump_data_section - Dump IOA memory
2591 * @ioa_cfg: ioa config struct
2592 * @start_addr: adapter address to dump
2593 * @dest: destination kernel buffer
2594 * @length_in_words: length to dump in 4 byte words
2595 *
2596 * Return value:
2597 * 0 on success
2598 **/
2599 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2600 u32 start_addr,
2601 __be32 *dest, u32 length_in_words)
2602 {
2603 int i;
2604
2605 for (i = 0; i < length_in_words; i++) {
2606 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2607 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2608 dest++;
2609 }
2610
2611 return 0;
2612 }
2613
2614 /**
2615 * ipr_get_ldump_data_section - Dump IOA memory
2616 * @ioa_cfg: ioa config struct
2617 * @start_addr: adapter address to dump
2618 * @dest: destination kernel buffer
2619 * @length_in_words: length to dump in 4 byte words
2620 *
2621 * Return value:
2622 * 0 on success / -EIO on failure
2623 **/
2624 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2625 u32 start_addr,
2626 __be32 *dest, u32 length_in_words)
2627 {
2628 volatile u32 temp_pcii_reg;
2629 int i, delay = 0;
2630
2631 if (ioa_cfg->sis64)
2632 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2633 dest, length_in_words);
2634
2635 /* Write IOA interrupt reg starting LDUMP state */
2636 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2637 ioa_cfg->regs.set_uproc_interrupt_reg32);
2638
2639 /* Wait for IO debug acknowledge */
2640 if (ipr_wait_iodbg_ack(ioa_cfg,
2641 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2642 dev_err(&ioa_cfg->pdev->dev,
2643 "IOA dump long data transfer timeout\n");
2644 return -EIO;
2645 }
2646
2647 /* Signal LDUMP interlocked - clear IO debug ack */
2648 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2649 ioa_cfg->regs.clr_interrupt_reg);
2650
2651 /* Write Mailbox with starting address */
2652 writel(start_addr, ioa_cfg->ioa_mailbox);
2653
2654 /* Signal address valid - clear IOA Reset alert */
2655 writel(IPR_UPROCI_RESET_ALERT,
2656 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2657
2658 for (i = 0; i < length_in_words; i++) {
2659 /* Wait for IO debug acknowledge */
2660 if (ipr_wait_iodbg_ack(ioa_cfg,
2661 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2662 dev_err(&ioa_cfg->pdev->dev,
2663 "IOA dump short data transfer timeout\n");
2664 return -EIO;
2665 }
2666
2667 /* Read data from mailbox and increment destination pointer */
2668 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2669 dest++;
2670
2671 /* For all but the last word of data, signal data received */
2672 if (i < (length_in_words - 1)) {
2673 /* Signal dump data received - Clear IO debug Ack */
2674 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2675 ioa_cfg->regs.clr_interrupt_reg);
2676 }
2677 }
2678
2679 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2680 writel(IPR_UPROCI_RESET_ALERT,
2681 ioa_cfg->regs.set_uproc_interrupt_reg32);
2682
2683 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2684 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2685
2686 /* Signal dump data received - Clear IO debug Ack */
2687 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2688 ioa_cfg->regs.clr_interrupt_reg);
2689
2690 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2691 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2692 temp_pcii_reg =
2693 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2694
2695 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2696 return 0;
2697
2698 udelay(10);
2699 delay += 10;
2700 }
2701
2702 return 0;
2703 }
2704
2705 #ifdef CONFIG_SCSI_IPR_DUMP
2706 /**
2707 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2708 * @ioa_cfg: ioa config struct
2709 * @pci_address: adapter address
2710 * @length: length of data to copy
2711 *
2712 * Copy data from PCI adapter to kernel buffer.
2713 * Note: length MUST be a 4 byte multiple
2714 * Return value:
2715 * 0 on success / other on failure
2716 **/
2717 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2718 unsigned long pci_address, u32 length)
2719 {
2720 int bytes_copied = 0;
2721 int cur_len, rc, rem_len, rem_page_len;
2722 __be32 *page;
2723 unsigned long lock_flags = 0;
2724 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2725
2726 while (bytes_copied < length &&
2727 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2728 if (ioa_dump->page_offset >= PAGE_SIZE ||
2729 ioa_dump->page_offset == 0) {
2730 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2731
2732 if (!page) {
2733 ipr_trace;
2734 return bytes_copied;
2735 }
2736
2737 ioa_dump->page_offset = 0;
2738 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2739 ioa_dump->next_page_index++;
2740 } else
2741 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2742
2743 rem_len = length - bytes_copied;
2744 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2745 cur_len = min(rem_len, rem_page_len);
2746
2747 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2748 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2749 rc = -EIO;
2750 } else {
2751 rc = ipr_get_ldump_data_section(ioa_cfg,
2752 pci_address + bytes_copied,
2753 &page[ioa_dump->page_offset / 4],
2754 (cur_len / sizeof(u32)));
2755 }
2756 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2757
2758 if (!rc) {
2759 ioa_dump->page_offset += cur_len;
2760 bytes_copied += cur_len;
2761 } else {
2762 ipr_trace;
2763 break;
2764 }
2765 schedule();
2766 }
2767
2768 return bytes_copied;
2769 }
2770
2771 /**
2772 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2773 * @hdr: dump entry header struct
2774 *
2775 * Return value:
2776 * nothing
2777 **/
2778 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2779 {
2780 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2781 hdr->num_elems = 1;
2782 hdr->offset = sizeof(*hdr);
2783 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2784 }
2785
2786 /**
2787 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2788 * @ioa_cfg: ioa config struct
2789 * @driver_dump: driver dump struct
2790 *
2791 * Return value:
2792 * nothing
2793 **/
2794 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2795 struct ipr_driver_dump *driver_dump)
2796 {
2797 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2798
2799 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2800 driver_dump->ioa_type_entry.hdr.len =
2801 sizeof(struct ipr_dump_ioa_type_entry) -
2802 sizeof(struct ipr_dump_entry_header);
2803 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2804 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2805 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2806 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2807 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2808 ucode_vpd->minor_release[1];
2809 driver_dump->hdr.num_entries++;
2810 }
2811
2812 /**
2813 * ipr_dump_version_data - Fill in the driver version in the dump.
2814 * @ioa_cfg: ioa config struct
2815 * @driver_dump: driver dump struct
2816 *
2817 * Return value:
2818 * nothing
2819 **/
2820 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2821 struct ipr_driver_dump *driver_dump)
2822 {
2823 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2824 driver_dump->version_entry.hdr.len =
2825 sizeof(struct ipr_dump_version_entry) -
2826 sizeof(struct ipr_dump_entry_header);
2827 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2828 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2829 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2830 driver_dump->hdr.num_entries++;
2831 }
2832
2833 /**
2834 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2835 * @ioa_cfg: ioa config struct
2836 * @driver_dump: driver dump struct
2837 *
2838 * Return value:
2839 * nothing
2840 **/
2841 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2842 struct ipr_driver_dump *driver_dump)
2843 {
2844 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2845 driver_dump->trace_entry.hdr.len =
2846 sizeof(struct ipr_dump_trace_entry) -
2847 sizeof(struct ipr_dump_entry_header);
2848 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2849 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2850 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2851 driver_dump->hdr.num_entries++;
2852 }
2853
2854 /**
2855 * ipr_dump_location_data - Fill in the IOA location in the dump.
2856 * @ioa_cfg: ioa config struct
2857 * @driver_dump: driver dump struct
2858 *
2859 * Return value:
2860 * nothing
2861 **/
2862 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2863 struct ipr_driver_dump *driver_dump)
2864 {
2865 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2866 driver_dump->location_entry.hdr.len =
2867 sizeof(struct ipr_dump_location_entry) -
2868 sizeof(struct ipr_dump_entry_header);
2869 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2870 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2871 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2872 driver_dump->hdr.num_entries++;
2873 }
2874
2875 /**
2876 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2877 * @ioa_cfg: ioa config struct
2878 * @dump: dump struct
2879 *
2880 * Return value:
2881 * nothing
2882 **/
2883 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2884 {
2885 unsigned long start_addr, sdt_word;
2886 unsigned long lock_flags = 0;
2887 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2888 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2889 u32 num_entries, start_off, end_off;
2890 u32 bytes_to_copy, bytes_copied, rc;
2891 struct ipr_sdt *sdt;
2892 int valid = 1;
2893 int i;
2894
2895 ENTER;
2896
2897 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2898
2899 if (ioa_cfg->sdt_state != GET_DUMP) {
2900 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2901 return;
2902 }
2903
2904 start_addr = readl(ioa_cfg->ioa_mailbox);
2905
2906 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
2907 dev_err(&ioa_cfg->pdev->dev,
2908 "Invalid dump table format: %lx\n", start_addr);
2909 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2910 return;
2911 }
2912
2913 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2914
2915 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2916
2917 /* Initialize the overall dump header */
2918 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2919 driver_dump->hdr.num_entries = 1;
2920 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2921 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2922 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2923 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2924
2925 ipr_dump_version_data(ioa_cfg, driver_dump);
2926 ipr_dump_location_data(ioa_cfg, driver_dump);
2927 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2928 ipr_dump_trace_data(ioa_cfg, driver_dump);
2929
2930 /* Update dump_header */
2931 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2932
2933 /* IOA Dump entry */
2934 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2935 ioa_dump->hdr.len = 0;
2936 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2937 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2938
2939 /* First entries in sdt are actually a list of dump addresses and
2940 lengths to gather the real dump data. sdt represents the pointer
2941 to the ioa generated dump table. Dump data will be extracted based
2942 on entries in this table */
2943 sdt = &ioa_dump->sdt;
2944
2945 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2946 sizeof(struct ipr_sdt) / sizeof(__be32));
2947
2948 /* Smart Dump table is ready to use and the first entry is valid */
2949 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2950 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
2951 dev_err(&ioa_cfg->pdev->dev,
2952 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2953 rc, be32_to_cpu(sdt->hdr.state));
2954 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2955 ioa_cfg->sdt_state = DUMP_OBTAINED;
2956 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2957 return;
2958 }
2959
2960 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2961
2962 if (num_entries > IPR_NUM_SDT_ENTRIES)
2963 num_entries = IPR_NUM_SDT_ENTRIES;
2964
2965 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2966
2967 for (i = 0; i < num_entries; i++) {
2968 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2969 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2970 break;
2971 }
2972
2973 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2974 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
2975 if (ioa_cfg->sis64)
2976 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
2977 else {
2978 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2979 end_off = be32_to_cpu(sdt->entry[i].end_token);
2980
2981 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
2982 bytes_to_copy = end_off - start_off;
2983 else
2984 valid = 0;
2985 }
2986 if (valid) {
2987 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2988 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2989 continue;
2990 }
2991
2992 /* Copy data from adapter to driver buffers */
2993 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2994 bytes_to_copy);
2995
2996 ioa_dump->hdr.len += bytes_copied;
2997
2998 if (bytes_copied != bytes_to_copy) {
2999 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3000 break;
3001 }
3002 }
3003 }
3004 }
3005
3006 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3007
3008 /* Update dump_header */
3009 driver_dump->hdr.len += ioa_dump->hdr.len;
3010 wmb();
3011 ioa_cfg->sdt_state = DUMP_OBTAINED;
3012 LEAVE;
3013 }
3014
3015 #else
3016 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3017 #endif
3018
3019 /**
3020 * ipr_release_dump - Free adapter dump memory
3021 * @kref: kref struct
3022 *
3023 * Return value:
3024 * nothing
3025 **/
3026 static void ipr_release_dump(struct kref *kref)
3027 {
3028 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3029 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3030 unsigned long lock_flags = 0;
3031 int i;
3032
3033 ENTER;
3034 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3035 ioa_cfg->dump = NULL;
3036 ioa_cfg->sdt_state = INACTIVE;
3037 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3038
3039 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3040 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3041
3042 kfree(dump);
3043 LEAVE;
3044 }
3045
3046 /**
3047 * ipr_worker_thread - Worker thread
3048 * @work: ioa config struct
3049 *
3050 * Called at task level from a work thread. This function takes care
3051 * of adding and removing device from the mid-layer as configuration
3052 * changes are detected by the adapter.
3053 *
3054 * Return value:
3055 * nothing
3056 **/
3057 static void ipr_worker_thread(struct work_struct *work)
3058 {
3059 unsigned long lock_flags;
3060 struct ipr_resource_entry *res;
3061 struct scsi_device *sdev;
3062 struct ipr_dump *dump;
3063 struct ipr_ioa_cfg *ioa_cfg =
3064 container_of(work, struct ipr_ioa_cfg, work_q);
3065 u8 bus, target, lun;
3066 int did_work;
3067
3068 ENTER;
3069 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3070
3071 if (ioa_cfg->sdt_state == GET_DUMP) {
3072 dump = ioa_cfg->dump;
3073 if (!dump) {
3074 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3075 return;
3076 }
3077 kref_get(&dump->kref);
3078 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3079 ipr_get_ioa_dump(ioa_cfg, dump);
3080 kref_put(&dump->kref, ipr_release_dump);
3081
3082 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3083 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
3084 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3085 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3086 return;
3087 }
3088
3089 restart:
3090 do {
3091 did_work = 0;
3092 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3093 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3094 return;
3095 }
3096
3097 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3098 if (res->del_from_ml && res->sdev) {
3099 did_work = 1;
3100 sdev = res->sdev;
3101 if (!scsi_device_get(sdev)) {
3102 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3104 scsi_remove_device(sdev);
3105 scsi_device_put(sdev);
3106 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3107 }
3108 break;
3109 }
3110 }
3111 } while(did_work);
3112
3113 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3114 if (res->add_to_ml) {
3115 bus = res->bus;
3116 target = res->target;
3117 lun = res->lun;
3118 res->add_to_ml = 0;
3119 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3120 scsi_add_device(ioa_cfg->host, bus, target, lun);
3121 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3122 goto restart;
3123 }
3124 }
3125
3126 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3127 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3128 LEAVE;
3129 }
3130
3131 #ifdef CONFIG_SCSI_IPR_TRACE
3132 /**
3133 * ipr_read_trace - Dump the adapter trace
3134 * @filp: open sysfs file
3135 * @kobj: kobject struct
3136 * @bin_attr: bin_attribute struct
3137 * @buf: buffer
3138 * @off: offset
3139 * @count: buffer size
3140 *
3141 * Return value:
3142 * number of bytes printed to buffer
3143 **/
3144 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3145 struct bin_attribute *bin_attr,
3146 char *buf, loff_t off, size_t count)
3147 {
3148 struct device *dev = container_of(kobj, struct device, kobj);
3149 struct Scsi_Host *shost = class_to_shost(dev);
3150 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3151 unsigned long lock_flags = 0;
3152 ssize_t ret;
3153
3154 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3155 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3156 IPR_TRACE_SIZE);
3157 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3158
3159 return ret;
3160 }
3161
3162 static struct bin_attribute ipr_trace_attr = {
3163 .attr = {
3164 .name = "trace",
3165 .mode = S_IRUGO,
3166 },
3167 .size = 0,
3168 .read = ipr_read_trace,
3169 };
3170 #endif
3171
3172 /**
3173 * ipr_show_fw_version - Show the firmware version
3174 * @dev: class device struct
3175 * @buf: buffer
3176 *
3177 * Return value:
3178 * number of bytes printed to buffer
3179 **/
3180 static ssize_t ipr_show_fw_version(struct device *dev,
3181 struct device_attribute *attr, char *buf)
3182 {
3183 struct Scsi_Host *shost = class_to_shost(dev);
3184 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3185 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3186 unsigned long lock_flags = 0;
3187 int len;
3188
3189 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3190 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3191 ucode_vpd->major_release, ucode_vpd->card_type,
3192 ucode_vpd->minor_release[0],
3193 ucode_vpd->minor_release[1]);
3194 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3195 return len;
3196 }
3197
3198 static struct device_attribute ipr_fw_version_attr = {
3199 .attr = {
3200 .name = "fw_version",
3201 .mode = S_IRUGO,
3202 },
3203 .show = ipr_show_fw_version,
3204 };
3205
3206 /**
3207 * ipr_show_log_level - Show the adapter's error logging level
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_log_level(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 unsigned long lock_flags = 0;
3220 int len;
3221
3222 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3223 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3225 return len;
3226 }
3227
3228 /**
3229 * ipr_store_log_level - Change the adapter's error logging level
3230 * @dev: class device struct
3231 * @buf: buffer
3232 *
3233 * Return value:
3234 * number of bytes printed to buffer
3235 **/
3236 static ssize_t ipr_store_log_level(struct device *dev,
3237 struct device_attribute *attr,
3238 const char *buf, size_t count)
3239 {
3240 struct Scsi_Host *shost = class_to_shost(dev);
3241 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3242 unsigned long lock_flags = 0;
3243
3244 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3245 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3246 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3247 return strlen(buf);
3248 }
3249
3250 static struct device_attribute ipr_log_level_attr = {
3251 .attr = {
3252 .name = "log_level",
3253 .mode = S_IRUGO | S_IWUSR,
3254 },
3255 .show = ipr_show_log_level,
3256 .store = ipr_store_log_level
3257 };
3258
3259 /**
3260 * ipr_store_diagnostics - IOA Diagnostics interface
3261 * @dev: device struct
3262 * @buf: buffer
3263 * @count: buffer size
3264 *
3265 * This function will reset the adapter and wait a reasonable
3266 * amount of time for any errors that the adapter might log.
3267 *
3268 * Return value:
3269 * count on success / other on failure
3270 **/
3271 static ssize_t ipr_store_diagnostics(struct device *dev,
3272 struct device_attribute *attr,
3273 const char *buf, size_t count)
3274 {
3275 struct Scsi_Host *shost = class_to_shost(dev);
3276 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3277 unsigned long lock_flags = 0;
3278 int rc = count;
3279
3280 if (!capable(CAP_SYS_ADMIN))
3281 return -EACCES;
3282
3283 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3284 while(ioa_cfg->in_reset_reload) {
3285 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3286 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3287 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3288 }
3289
3290 ioa_cfg->errors_logged = 0;
3291 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3292
3293 if (ioa_cfg->in_reset_reload) {
3294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3295 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3296
3297 /* Wait for a second for any errors to be logged */
3298 msleep(1000);
3299 } else {
3300 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3301 return -EIO;
3302 }
3303
3304 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3305 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3306 rc = -EIO;
3307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3308
3309 return rc;
3310 }
3311
3312 static struct device_attribute ipr_diagnostics_attr = {
3313 .attr = {
3314 .name = "run_diagnostics",
3315 .mode = S_IWUSR,
3316 },
3317 .store = ipr_store_diagnostics
3318 };
3319
3320 /**
3321 * ipr_show_adapter_state - Show the adapter's state
3322 * @class_dev: device struct
3323 * @buf: buffer
3324 *
3325 * Return value:
3326 * number of bytes printed to buffer
3327 **/
3328 static ssize_t ipr_show_adapter_state(struct device *dev,
3329 struct device_attribute *attr, char *buf)
3330 {
3331 struct Scsi_Host *shost = class_to_shost(dev);
3332 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3333 unsigned long lock_flags = 0;
3334 int len;
3335
3336 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3337 if (ioa_cfg->ioa_is_dead)
3338 len = snprintf(buf, PAGE_SIZE, "offline\n");
3339 else
3340 len = snprintf(buf, PAGE_SIZE, "online\n");
3341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3342 return len;
3343 }
3344
3345 /**
3346 * ipr_store_adapter_state - Change adapter state
3347 * @dev: device struct
3348 * @buf: buffer
3349 * @count: buffer size
3350 *
3351 * This function will change the adapter's state.
3352 *
3353 * Return value:
3354 * count on success / other on failure
3355 **/
3356 static ssize_t ipr_store_adapter_state(struct device *dev,
3357 struct device_attribute *attr,
3358 const char *buf, size_t count)
3359 {
3360 struct Scsi_Host *shost = class_to_shost(dev);
3361 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3362 unsigned long lock_flags;
3363 int result = count;
3364
3365 if (!capable(CAP_SYS_ADMIN))
3366 return -EACCES;
3367
3368 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3369 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
3370 ioa_cfg->ioa_is_dead = 0;
3371 ioa_cfg->reset_retries = 0;
3372 ioa_cfg->in_ioa_bringdown = 0;
3373 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3374 }
3375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3376 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3377
3378 return result;
3379 }
3380
3381 static struct device_attribute ipr_ioa_state_attr = {
3382 .attr = {
3383 .name = "online_state",
3384 .mode = S_IRUGO | S_IWUSR,
3385 },
3386 .show = ipr_show_adapter_state,
3387 .store = ipr_store_adapter_state
3388 };
3389
3390 /**
3391 * ipr_store_reset_adapter - Reset the adapter
3392 * @dev: device struct
3393 * @buf: buffer
3394 * @count: buffer size
3395 *
3396 * This function will reset the adapter.
3397 *
3398 * Return value:
3399 * count on success / other on failure
3400 **/
3401 static ssize_t ipr_store_reset_adapter(struct device *dev,
3402 struct device_attribute *attr,
3403 const char *buf, size_t count)
3404 {
3405 struct Scsi_Host *shost = class_to_shost(dev);
3406 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3407 unsigned long lock_flags;
3408 int result = count;
3409
3410 if (!capable(CAP_SYS_ADMIN))
3411 return -EACCES;
3412
3413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3414 if (!ioa_cfg->in_reset_reload)
3415 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3416 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3417 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3418
3419 return result;
3420 }
3421
3422 static struct device_attribute ipr_ioa_reset_attr = {
3423 .attr = {
3424 .name = "reset_host",
3425 .mode = S_IWUSR,
3426 },
3427 .store = ipr_store_reset_adapter
3428 };
3429
3430 /**
3431 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3432 * @buf_len: buffer length
3433 *
3434 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3435 * list to use for microcode download
3436 *
3437 * Return value:
3438 * pointer to sglist / NULL on failure
3439 **/
3440 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3441 {
3442 int sg_size, order, bsize_elem, num_elem, i, j;
3443 struct ipr_sglist *sglist;
3444 struct scatterlist *scatterlist;
3445 struct page *page;
3446
3447 /* Get the minimum size per scatter/gather element */
3448 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3449
3450 /* Get the actual size per element */
3451 order = get_order(sg_size);
3452
3453 /* Determine the actual number of bytes per element */
3454 bsize_elem = PAGE_SIZE * (1 << order);
3455
3456 /* Determine the actual number of sg entries needed */
3457 if (buf_len % bsize_elem)
3458 num_elem = (buf_len / bsize_elem) + 1;
3459 else
3460 num_elem = buf_len / bsize_elem;
3461
3462 /* Allocate a scatter/gather list for the DMA */
3463 sglist = kzalloc(sizeof(struct ipr_sglist) +
3464 (sizeof(struct scatterlist) * (num_elem - 1)),
3465 GFP_KERNEL);
3466
3467 if (sglist == NULL) {
3468 ipr_trace;
3469 return NULL;
3470 }
3471
3472 scatterlist = sglist->scatterlist;
3473 sg_init_table(scatterlist, num_elem);
3474
3475 sglist->order = order;
3476 sglist->num_sg = num_elem;
3477
3478 /* Allocate a bunch of sg elements */
3479 for (i = 0; i < num_elem; i++) {
3480 page = alloc_pages(GFP_KERNEL, order);
3481 if (!page) {
3482 ipr_trace;
3483
3484 /* Free up what we already allocated */
3485 for (j = i - 1; j >= 0; j--)
3486 __free_pages(sg_page(&scatterlist[j]), order);
3487 kfree(sglist);
3488 return NULL;
3489 }
3490
3491 sg_set_page(&scatterlist[i], page, 0, 0);
3492 }
3493
3494 return sglist;
3495 }
3496
3497 /**
3498 * ipr_free_ucode_buffer - Frees a microcode download buffer
3499 * @p_dnld: scatter/gather list pointer
3500 *
3501 * Free a DMA'able ucode download buffer previously allocated with
3502 * ipr_alloc_ucode_buffer
3503 *
3504 * Return value:
3505 * nothing
3506 **/
3507 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3508 {
3509 int i;
3510
3511 for (i = 0; i < sglist->num_sg; i++)
3512 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3513
3514 kfree(sglist);
3515 }
3516
3517 /**
3518 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3519 * @sglist: scatter/gather list pointer
3520 * @buffer: buffer pointer
3521 * @len: buffer length
3522 *
3523 * Copy a microcode image from a user buffer into a buffer allocated by
3524 * ipr_alloc_ucode_buffer
3525 *
3526 * Return value:
3527 * 0 on success / other on failure
3528 **/
3529 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3530 u8 *buffer, u32 len)
3531 {
3532 int bsize_elem, i, result = 0;
3533 struct scatterlist *scatterlist;
3534 void *kaddr;
3535
3536 /* Determine the actual number of bytes per element */
3537 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3538
3539 scatterlist = sglist->scatterlist;
3540
3541 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3542 struct page *page = sg_page(&scatterlist[i]);
3543
3544 kaddr = kmap(page);
3545 memcpy(kaddr, buffer, bsize_elem);
3546 kunmap(page);
3547
3548 scatterlist[i].length = bsize_elem;
3549
3550 if (result != 0) {
3551 ipr_trace;
3552 return result;
3553 }
3554 }
3555
3556 if (len % bsize_elem) {
3557 struct page *page = sg_page(&scatterlist[i]);
3558
3559 kaddr = kmap(page);
3560 memcpy(kaddr, buffer, len % bsize_elem);
3561 kunmap(page);
3562
3563 scatterlist[i].length = len % bsize_elem;
3564 }
3565
3566 sglist->buffer_len = len;
3567 return result;
3568 }
3569
3570 /**
3571 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3572 * @ipr_cmd: ipr command struct
3573 * @sglist: scatter/gather list
3574 *
3575 * Builds a microcode download IOA data list (IOADL).
3576 *
3577 **/
3578 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3579 struct ipr_sglist *sglist)
3580 {
3581 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3582 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3583 struct scatterlist *scatterlist = sglist->scatterlist;
3584 int i;
3585
3586 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3587 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3588 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3589
3590 ioarcb->ioadl_len =
3591 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3592 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3593 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3594 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3595 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3596 }
3597
3598 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3599 }
3600
3601 /**
3602 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3603 * @ipr_cmd: ipr command struct
3604 * @sglist: scatter/gather list
3605 *
3606 * Builds a microcode download IOA data list (IOADL).
3607 *
3608 **/
3609 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3610 struct ipr_sglist *sglist)
3611 {
3612 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3613 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3614 struct scatterlist *scatterlist = sglist->scatterlist;
3615 int i;
3616
3617 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3618 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3619 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3620
3621 ioarcb->ioadl_len =
3622 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3623
3624 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3625 ioadl[i].flags_and_data_len =
3626 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3627 ioadl[i].address =
3628 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3629 }
3630
3631 ioadl[i-1].flags_and_data_len |=
3632 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3633 }
3634
3635 /**
3636 * ipr_update_ioa_ucode - Update IOA's microcode
3637 * @ioa_cfg: ioa config struct
3638 * @sglist: scatter/gather list
3639 *
3640 * Initiate an adapter reset to update the IOA's microcode
3641 *
3642 * Return value:
3643 * 0 on success / -EIO on failure
3644 **/
3645 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3646 struct ipr_sglist *sglist)
3647 {
3648 unsigned long lock_flags;
3649
3650 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3651 while(ioa_cfg->in_reset_reload) {
3652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3653 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3654 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3655 }
3656
3657 if (ioa_cfg->ucode_sglist) {
3658 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3659 dev_err(&ioa_cfg->pdev->dev,
3660 "Microcode download already in progress\n");
3661 return -EIO;
3662 }
3663
3664 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3665 sglist->num_sg, DMA_TO_DEVICE);
3666
3667 if (!sglist->num_dma_sg) {
3668 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3669 dev_err(&ioa_cfg->pdev->dev,
3670 "Failed to map microcode download buffer!\n");
3671 return -EIO;
3672 }
3673
3674 ioa_cfg->ucode_sglist = sglist;
3675 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3676 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3677 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3678
3679 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3680 ioa_cfg->ucode_sglist = NULL;
3681 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3682 return 0;
3683 }
3684
3685 /**
3686 * ipr_store_update_fw - Update the firmware on the adapter
3687 * @class_dev: device struct
3688 * @buf: buffer
3689 * @count: buffer size
3690 *
3691 * This function will update the firmware on the adapter.
3692 *
3693 * Return value:
3694 * count on success / other on failure
3695 **/
3696 static ssize_t ipr_store_update_fw(struct device *dev,
3697 struct device_attribute *attr,
3698 const char *buf, size_t count)
3699 {
3700 struct Scsi_Host *shost = class_to_shost(dev);
3701 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3702 struct ipr_ucode_image_header *image_hdr;
3703 const struct firmware *fw_entry;
3704 struct ipr_sglist *sglist;
3705 char fname[100];
3706 char *src;
3707 int len, result, dnld_size;
3708
3709 if (!capable(CAP_SYS_ADMIN))
3710 return -EACCES;
3711
3712 len = snprintf(fname, 99, "%s", buf);
3713 fname[len-1] = '\0';
3714
3715 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3716 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3717 return -EIO;
3718 }
3719
3720 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3721
3722 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3723 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3724 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3725 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3726 release_firmware(fw_entry);
3727 return -EINVAL;
3728 }
3729
3730 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3731 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3732 sglist = ipr_alloc_ucode_buffer(dnld_size);
3733
3734 if (!sglist) {
3735 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3736 release_firmware(fw_entry);
3737 return -ENOMEM;
3738 }
3739
3740 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3741
3742 if (result) {
3743 dev_err(&ioa_cfg->pdev->dev,
3744 "Microcode buffer copy to DMA buffer failed\n");
3745 goto out;
3746 }
3747
3748 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3749
3750 if (!result)
3751 result = count;
3752 out:
3753 ipr_free_ucode_buffer(sglist);
3754 release_firmware(fw_entry);
3755 return result;
3756 }
3757
3758 static struct device_attribute ipr_update_fw_attr = {
3759 .attr = {
3760 .name = "update_fw",
3761 .mode = S_IWUSR,
3762 },
3763 .store = ipr_store_update_fw
3764 };
3765
3766 /**
3767 * ipr_show_fw_type - Show the adapter's firmware type.
3768 * @dev: class device struct
3769 * @buf: buffer
3770 *
3771 * Return value:
3772 * number of bytes printed to buffer
3773 **/
3774 static ssize_t ipr_show_fw_type(struct device *dev,
3775 struct device_attribute *attr, char *buf)
3776 {
3777 struct Scsi_Host *shost = class_to_shost(dev);
3778 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3779 unsigned long lock_flags = 0;
3780 int len;
3781
3782 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3783 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
3784 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3785 return len;
3786 }
3787
3788 static struct device_attribute ipr_ioa_fw_type_attr = {
3789 .attr = {
3790 .name = "fw_type",
3791 .mode = S_IRUGO,
3792 },
3793 .show = ipr_show_fw_type
3794 };
3795
3796 static struct device_attribute *ipr_ioa_attrs[] = {
3797 &ipr_fw_version_attr,
3798 &ipr_log_level_attr,
3799 &ipr_diagnostics_attr,
3800 &ipr_ioa_state_attr,
3801 &ipr_ioa_reset_attr,
3802 &ipr_update_fw_attr,
3803 &ipr_ioa_fw_type_attr,
3804 NULL,
3805 };
3806
3807 #ifdef CONFIG_SCSI_IPR_DUMP
3808 /**
3809 * ipr_read_dump - Dump the adapter
3810 * @filp: open sysfs file
3811 * @kobj: kobject struct
3812 * @bin_attr: bin_attribute struct
3813 * @buf: buffer
3814 * @off: offset
3815 * @count: buffer size
3816 *
3817 * Return value:
3818 * number of bytes printed to buffer
3819 **/
3820 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
3821 struct bin_attribute *bin_attr,
3822 char *buf, loff_t off, size_t count)
3823 {
3824 struct device *cdev = container_of(kobj, struct device, kobj);
3825 struct Scsi_Host *shost = class_to_shost(cdev);
3826 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3827 struct ipr_dump *dump;
3828 unsigned long lock_flags = 0;
3829 char *src;
3830 int len;
3831 size_t rc = count;
3832
3833 if (!capable(CAP_SYS_ADMIN))
3834 return -EACCES;
3835
3836 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3837 dump = ioa_cfg->dump;
3838
3839 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3840 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3841 return 0;
3842 }
3843 kref_get(&dump->kref);
3844 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3845
3846 if (off > dump->driver_dump.hdr.len) {
3847 kref_put(&dump->kref, ipr_release_dump);
3848 return 0;
3849 }
3850
3851 if (off + count > dump->driver_dump.hdr.len) {
3852 count = dump->driver_dump.hdr.len - off;
3853 rc = count;
3854 }
3855
3856 if (count && off < sizeof(dump->driver_dump)) {
3857 if (off + count > sizeof(dump->driver_dump))
3858 len = sizeof(dump->driver_dump) - off;
3859 else
3860 len = count;
3861 src = (u8 *)&dump->driver_dump + off;
3862 memcpy(buf, src, len);
3863 buf += len;
3864 off += len;
3865 count -= len;
3866 }
3867
3868 off -= sizeof(dump->driver_dump);
3869
3870 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3871 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3872 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3873 else
3874 len = count;
3875 src = (u8 *)&dump->ioa_dump + off;
3876 memcpy(buf, src, len);
3877 buf += len;
3878 off += len;
3879 count -= len;
3880 }
3881
3882 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3883
3884 while (count) {
3885 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3886 len = PAGE_ALIGN(off) - off;
3887 else
3888 len = count;
3889 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3890 src += off & ~PAGE_MASK;
3891 memcpy(buf, src, len);
3892 buf += len;
3893 off += len;
3894 count -= len;
3895 }
3896
3897 kref_put(&dump->kref, ipr_release_dump);
3898 return rc;
3899 }
3900
3901 /**
3902 * ipr_alloc_dump - Prepare for adapter dump
3903 * @ioa_cfg: ioa config struct
3904 *
3905 * Return value:
3906 * 0 on success / other on failure
3907 **/
3908 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3909 {
3910 struct ipr_dump *dump;
3911 unsigned long lock_flags = 0;
3912
3913 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3914
3915 if (!dump) {
3916 ipr_err("Dump memory allocation failed\n");
3917 return -ENOMEM;
3918 }
3919
3920 kref_init(&dump->kref);
3921 dump->ioa_cfg = ioa_cfg;
3922
3923 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3924
3925 if (INACTIVE != ioa_cfg->sdt_state) {
3926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3927 kfree(dump);
3928 return 0;
3929 }
3930
3931 ioa_cfg->dump = dump;
3932 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3933 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3934 ioa_cfg->dump_taken = 1;
3935 schedule_work(&ioa_cfg->work_q);
3936 }
3937 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3938
3939 return 0;
3940 }
3941
3942 /**
3943 * ipr_free_dump - Free adapter dump memory
3944 * @ioa_cfg: ioa config struct
3945 *
3946 * Return value:
3947 * 0 on success / other on failure
3948 **/
3949 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3950 {
3951 struct ipr_dump *dump;
3952 unsigned long lock_flags = 0;
3953
3954 ENTER;
3955
3956 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3957 dump = ioa_cfg->dump;
3958 if (!dump) {
3959 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3960 return 0;
3961 }
3962
3963 ioa_cfg->dump = NULL;
3964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3965
3966 kref_put(&dump->kref, ipr_release_dump);
3967
3968 LEAVE;
3969 return 0;
3970 }
3971
3972 /**
3973 * ipr_write_dump - Setup dump state of adapter
3974 * @filp: open sysfs file
3975 * @kobj: kobject struct
3976 * @bin_attr: bin_attribute struct
3977 * @buf: buffer
3978 * @off: offset
3979 * @count: buffer size
3980 *
3981 * Return value:
3982 * number of bytes printed to buffer
3983 **/
3984 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
3985 struct bin_attribute *bin_attr,
3986 char *buf, loff_t off, size_t count)
3987 {
3988 struct device *cdev = container_of(kobj, struct device, kobj);
3989 struct Scsi_Host *shost = class_to_shost(cdev);
3990 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3991 int rc;
3992
3993 if (!capable(CAP_SYS_ADMIN))
3994 return -EACCES;
3995
3996 if (buf[0] == '1')
3997 rc = ipr_alloc_dump(ioa_cfg);
3998 else if (buf[0] == '0')
3999 rc = ipr_free_dump(ioa_cfg);
4000 else
4001 return -EINVAL;
4002
4003 if (rc)
4004 return rc;
4005 else
4006 return count;
4007 }
4008
4009 static struct bin_attribute ipr_dump_attr = {
4010 .attr = {
4011 .name = "dump",
4012 .mode = S_IRUSR | S_IWUSR,
4013 },
4014 .size = 0,
4015 .read = ipr_read_dump,
4016 .write = ipr_write_dump
4017 };
4018 #else
4019 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4020 #endif
4021
4022 /**
4023 * ipr_change_queue_depth - Change the device's queue depth
4024 * @sdev: scsi device struct
4025 * @qdepth: depth to set
4026 * @reason: calling context
4027 *
4028 * Return value:
4029 * actual depth set
4030 **/
4031 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4032 int reason)
4033 {
4034 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4035 struct ipr_resource_entry *res;
4036 unsigned long lock_flags = 0;
4037
4038 if (reason != SCSI_QDEPTH_DEFAULT)
4039 return -EOPNOTSUPP;
4040
4041 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4042 res = (struct ipr_resource_entry *)sdev->hostdata;
4043
4044 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4045 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4047
4048 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4049 return sdev->queue_depth;
4050 }
4051
4052 /**
4053 * ipr_change_queue_type - Change the device's queue type
4054 * @dsev: scsi device struct
4055 * @tag_type: type of tags to use
4056 *
4057 * Return value:
4058 * actual queue type set
4059 **/
4060 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4061 {
4062 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4063 struct ipr_resource_entry *res;
4064 unsigned long lock_flags = 0;
4065
4066 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4067 res = (struct ipr_resource_entry *)sdev->hostdata;
4068
4069 if (res) {
4070 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4071 /*
4072 * We don't bother quiescing the device here since the
4073 * adapter firmware does it for us.
4074 */
4075 scsi_set_tag_type(sdev, tag_type);
4076
4077 if (tag_type)
4078 scsi_activate_tcq(sdev, sdev->queue_depth);
4079 else
4080 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4081 } else
4082 tag_type = 0;
4083 } else
4084 tag_type = 0;
4085
4086 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4087 return tag_type;
4088 }
4089
4090 /**
4091 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4092 * @dev: device struct
4093 * @attr: device attribute structure
4094 * @buf: buffer
4095 *
4096 * Return value:
4097 * number of bytes printed to buffer
4098 **/
4099 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4100 {
4101 struct scsi_device *sdev = to_scsi_device(dev);
4102 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4103 struct ipr_resource_entry *res;
4104 unsigned long lock_flags = 0;
4105 ssize_t len = -ENXIO;
4106
4107 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4108 res = (struct ipr_resource_entry *)sdev->hostdata;
4109 if (res)
4110 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4111 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4112 return len;
4113 }
4114
4115 static struct device_attribute ipr_adapter_handle_attr = {
4116 .attr = {
4117 .name = "adapter_handle",
4118 .mode = S_IRUSR,
4119 },
4120 .show = ipr_show_adapter_handle
4121 };
4122
4123 /**
4124 * ipr_show_resource_path - Show the resource path or the resource address for
4125 * this device.
4126 * @dev: device struct
4127 * @attr: device attribute structure
4128 * @buf: buffer
4129 *
4130 * Return value:
4131 * number of bytes printed to buffer
4132 **/
4133 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4134 {
4135 struct scsi_device *sdev = to_scsi_device(dev);
4136 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4137 struct ipr_resource_entry *res;
4138 unsigned long lock_flags = 0;
4139 ssize_t len = -ENXIO;
4140 char buffer[IPR_MAX_RES_PATH_LENGTH];
4141
4142 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4143 res = (struct ipr_resource_entry *)sdev->hostdata;
4144 if (res && ioa_cfg->sis64)
4145 len = snprintf(buf, PAGE_SIZE, "%s\n",
4146 ipr_format_res_path(res->res_path, buffer,
4147 sizeof(buffer)));
4148 else if (res)
4149 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4150 res->bus, res->target, res->lun);
4151
4152 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4153 return len;
4154 }
4155
4156 static struct device_attribute ipr_resource_path_attr = {
4157 .attr = {
4158 .name = "resource_path",
4159 .mode = S_IRUGO,
4160 },
4161 .show = ipr_show_resource_path
4162 };
4163
4164 /**
4165 * ipr_show_device_id - Show the device_id for this device.
4166 * @dev: device struct
4167 * @attr: device attribute structure
4168 * @buf: buffer
4169 *
4170 * Return value:
4171 * number of bytes printed to buffer
4172 **/
4173 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4174 {
4175 struct scsi_device *sdev = to_scsi_device(dev);
4176 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4177 struct ipr_resource_entry *res;
4178 unsigned long lock_flags = 0;
4179 ssize_t len = -ENXIO;
4180
4181 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4182 res = (struct ipr_resource_entry *)sdev->hostdata;
4183 if (res && ioa_cfg->sis64)
4184 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id);
4185 else if (res)
4186 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4187
4188 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4189 return len;
4190 }
4191
4192 static struct device_attribute ipr_device_id_attr = {
4193 .attr = {
4194 .name = "device_id",
4195 .mode = S_IRUGO,
4196 },
4197 .show = ipr_show_device_id
4198 };
4199
4200 /**
4201 * ipr_show_resource_type - Show the resource type for this device.
4202 * @dev: device struct
4203 * @attr: device attribute structure
4204 * @buf: buffer
4205 *
4206 * Return value:
4207 * number of bytes printed to buffer
4208 **/
4209 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4210 {
4211 struct scsi_device *sdev = to_scsi_device(dev);
4212 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4213 struct ipr_resource_entry *res;
4214 unsigned long lock_flags = 0;
4215 ssize_t len = -ENXIO;
4216
4217 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4218 res = (struct ipr_resource_entry *)sdev->hostdata;
4219
4220 if (res)
4221 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4222
4223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4224 return len;
4225 }
4226
4227 static struct device_attribute ipr_resource_type_attr = {
4228 .attr = {
4229 .name = "resource_type",
4230 .mode = S_IRUGO,
4231 },
4232 .show = ipr_show_resource_type
4233 };
4234
4235 static struct device_attribute *ipr_dev_attrs[] = {
4236 &ipr_adapter_handle_attr,
4237 &ipr_resource_path_attr,
4238 &ipr_device_id_attr,
4239 &ipr_resource_type_attr,
4240 NULL,
4241 };
4242
4243 /**
4244 * ipr_biosparam - Return the HSC mapping
4245 * @sdev: scsi device struct
4246 * @block_device: block device pointer
4247 * @capacity: capacity of the device
4248 * @parm: Array containing returned HSC values.
4249 *
4250 * This function generates the HSC parms that fdisk uses.
4251 * We want to make sure we return something that places partitions
4252 * on 4k boundaries for best performance with the IOA.
4253 *
4254 * Return value:
4255 * 0 on success
4256 **/
4257 static int ipr_biosparam(struct scsi_device *sdev,
4258 struct block_device *block_device,
4259 sector_t capacity, int *parm)
4260 {
4261 int heads, sectors;
4262 sector_t cylinders;
4263
4264 heads = 128;
4265 sectors = 32;
4266
4267 cylinders = capacity;
4268 sector_div(cylinders, (128 * 32));
4269
4270 /* return result */
4271 parm[0] = heads;
4272 parm[1] = sectors;
4273 parm[2] = cylinders;
4274
4275 return 0;
4276 }
4277
4278 /**
4279 * ipr_find_starget - Find target based on bus/target.
4280 * @starget: scsi target struct
4281 *
4282 * Return value:
4283 * resource entry pointer if found / NULL if not found
4284 **/
4285 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4286 {
4287 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4288 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4289 struct ipr_resource_entry *res;
4290
4291 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4292 if ((res->bus == starget->channel) &&
4293 (res->target == starget->id) &&
4294 (res->lun == 0)) {
4295 return res;
4296 }
4297 }
4298
4299 return NULL;
4300 }
4301
4302 static struct ata_port_info sata_port_info;
4303
4304 /**
4305 * ipr_target_alloc - Prepare for commands to a SCSI target
4306 * @starget: scsi target struct
4307 *
4308 * If the device is a SATA device, this function allocates an
4309 * ATA port with libata, else it does nothing.
4310 *
4311 * Return value:
4312 * 0 on success / non-0 on failure
4313 **/
4314 static int ipr_target_alloc(struct scsi_target *starget)
4315 {
4316 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4317 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4318 struct ipr_sata_port *sata_port;
4319 struct ata_port *ap;
4320 struct ipr_resource_entry *res;
4321 unsigned long lock_flags;
4322
4323 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4324 res = ipr_find_starget(starget);
4325 starget->hostdata = NULL;
4326
4327 if (res && ipr_is_gata(res)) {
4328 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4329 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4330 if (!sata_port)
4331 return -ENOMEM;
4332
4333 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4334 if (ap) {
4335 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4336 sata_port->ioa_cfg = ioa_cfg;
4337 sata_port->ap = ap;
4338 sata_port->res = res;
4339
4340 res->sata_port = sata_port;
4341 ap->private_data = sata_port;
4342 starget->hostdata = sata_port;
4343 } else {
4344 kfree(sata_port);
4345 return -ENOMEM;
4346 }
4347 }
4348 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4349
4350 return 0;
4351 }
4352
4353 /**
4354 * ipr_target_destroy - Destroy a SCSI target
4355 * @starget: scsi target struct
4356 *
4357 * If the device was a SATA device, this function frees the libata
4358 * ATA port, else it does nothing.
4359 *
4360 **/
4361 static void ipr_target_destroy(struct scsi_target *starget)
4362 {
4363 struct ipr_sata_port *sata_port = starget->hostdata;
4364 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4365 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4366
4367 if (ioa_cfg->sis64) {
4368 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4369 clear_bit(starget->id, ioa_cfg->array_ids);
4370 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4371 clear_bit(starget->id, ioa_cfg->vset_ids);
4372 else if (starget->channel == 0)
4373 clear_bit(starget->id, ioa_cfg->target_ids);
4374 }
4375
4376 if (sata_port) {
4377 starget->hostdata = NULL;
4378 ata_sas_port_destroy(sata_port->ap);
4379 kfree(sata_port);
4380 }
4381 }
4382
4383 /**
4384 * ipr_find_sdev - Find device based on bus/target/lun.
4385 * @sdev: scsi device struct
4386 *
4387 * Return value:
4388 * resource entry pointer if found / NULL if not found
4389 **/
4390 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4391 {
4392 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4393 struct ipr_resource_entry *res;
4394
4395 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4396 if ((res->bus == sdev->channel) &&
4397 (res->target == sdev->id) &&
4398 (res->lun == sdev->lun))
4399 return res;
4400 }
4401
4402 return NULL;
4403 }
4404
4405 /**
4406 * ipr_slave_destroy - Unconfigure a SCSI device
4407 * @sdev: scsi device struct
4408 *
4409 * Return value:
4410 * nothing
4411 **/
4412 static void ipr_slave_destroy(struct scsi_device *sdev)
4413 {
4414 struct ipr_resource_entry *res;
4415 struct ipr_ioa_cfg *ioa_cfg;
4416 unsigned long lock_flags = 0;
4417
4418 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4419
4420 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4421 res = (struct ipr_resource_entry *) sdev->hostdata;
4422 if (res) {
4423 if (res->sata_port)
4424 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4425 sdev->hostdata = NULL;
4426 res->sdev = NULL;
4427 res->sata_port = NULL;
4428 }
4429 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4430 }
4431
4432 /**
4433 * ipr_slave_configure - Configure a SCSI device
4434 * @sdev: scsi device struct
4435 *
4436 * This function configures the specified scsi device.
4437 *
4438 * Return value:
4439 * 0 on success
4440 **/
4441 static int ipr_slave_configure(struct scsi_device *sdev)
4442 {
4443 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4444 struct ipr_resource_entry *res;
4445 struct ata_port *ap = NULL;
4446 unsigned long lock_flags = 0;
4447 char buffer[IPR_MAX_RES_PATH_LENGTH];
4448
4449 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4450 res = sdev->hostdata;
4451 if (res) {
4452 if (ipr_is_af_dasd_device(res))
4453 sdev->type = TYPE_RAID;
4454 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4455 sdev->scsi_level = 4;
4456 sdev->no_uld_attach = 1;
4457 }
4458 if (ipr_is_vset_device(res)) {
4459 blk_queue_rq_timeout(sdev->request_queue,
4460 IPR_VSET_RW_TIMEOUT);
4461 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4462 }
4463 if (ipr_is_gata(res) && res->sata_port)
4464 ap = res->sata_port->ap;
4465 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4466
4467 if (ap) {
4468 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
4469 ata_sas_slave_configure(sdev, ap);
4470 } else
4471 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4472 if (ioa_cfg->sis64)
4473 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4474 ipr_format_res_path(res->res_path, buffer,
4475 sizeof(buffer)));
4476 return 0;
4477 }
4478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4479 return 0;
4480 }
4481
4482 /**
4483 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4484 * @sdev: scsi device struct
4485 *
4486 * This function initializes an ATA port so that future commands
4487 * sent through queuecommand will work.
4488 *
4489 * Return value:
4490 * 0 on success
4491 **/
4492 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4493 {
4494 struct ipr_sata_port *sata_port = NULL;
4495 int rc = -ENXIO;
4496
4497 ENTER;
4498 if (sdev->sdev_target)
4499 sata_port = sdev->sdev_target->hostdata;
4500 if (sata_port)
4501 rc = ata_sas_port_init(sata_port->ap);
4502 if (rc)
4503 ipr_slave_destroy(sdev);
4504
4505 LEAVE;
4506 return rc;
4507 }
4508
4509 /**
4510 * ipr_slave_alloc - Prepare for commands to a device.
4511 * @sdev: scsi device struct
4512 *
4513 * This function saves a pointer to the resource entry
4514 * in the scsi device struct if the device exists. We
4515 * can then use this pointer in ipr_queuecommand when
4516 * handling new commands.
4517 *
4518 * Return value:
4519 * 0 on success / -ENXIO if device does not exist
4520 **/
4521 static int ipr_slave_alloc(struct scsi_device *sdev)
4522 {
4523 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4524 struct ipr_resource_entry *res;
4525 unsigned long lock_flags;
4526 int rc = -ENXIO;
4527
4528 sdev->hostdata = NULL;
4529
4530 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4531
4532 res = ipr_find_sdev(sdev);
4533 if (res) {
4534 res->sdev = sdev;
4535 res->add_to_ml = 0;
4536 res->in_erp = 0;
4537 sdev->hostdata = res;
4538 if (!ipr_is_naca_model(res))
4539 res->needs_sync_complete = 1;
4540 rc = 0;
4541 if (ipr_is_gata(res)) {
4542 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4543 return ipr_ata_slave_alloc(sdev);
4544 }
4545 }
4546
4547 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4548
4549 return rc;
4550 }
4551
4552 /**
4553 * ipr_eh_host_reset - Reset the host adapter
4554 * @scsi_cmd: scsi command struct
4555 *
4556 * Return value:
4557 * SUCCESS / FAILED
4558 **/
4559 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
4560 {
4561 struct ipr_ioa_cfg *ioa_cfg;
4562 int rc;
4563
4564 ENTER;
4565 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4566
4567 dev_err(&ioa_cfg->pdev->dev,
4568 "Adapter being reset as a result of error recovery.\n");
4569
4570 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4571 ioa_cfg->sdt_state = GET_DUMP;
4572
4573 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4574
4575 LEAVE;
4576 return rc;
4577 }
4578
4579 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
4580 {
4581 int rc;
4582
4583 spin_lock_irq(cmd->device->host->host_lock);
4584 rc = __ipr_eh_host_reset(cmd);
4585 spin_unlock_irq(cmd->device->host->host_lock);
4586
4587 return rc;
4588 }
4589
4590 /**
4591 * ipr_device_reset - Reset the device
4592 * @ioa_cfg: ioa config struct
4593 * @res: resource entry struct
4594 *
4595 * This function issues a device reset to the affected device.
4596 * If the device is a SCSI device, a LUN reset will be sent
4597 * to the device first. If that does not work, a target reset
4598 * will be sent. If the device is a SATA device, a PHY reset will
4599 * be sent.
4600 *
4601 * Return value:
4602 * 0 on success / non-zero on failure
4603 **/
4604 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4605 struct ipr_resource_entry *res)
4606 {
4607 struct ipr_cmnd *ipr_cmd;
4608 struct ipr_ioarcb *ioarcb;
4609 struct ipr_cmd_pkt *cmd_pkt;
4610 struct ipr_ioarcb_ata_regs *regs;
4611 u32 ioasc;
4612
4613 ENTER;
4614 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4615 ioarcb = &ipr_cmd->ioarcb;
4616 cmd_pkt = &ioarcb->cmd_pkt;
4617
4618 if (ipr_cmd->ioa_cfg->sis64) {
4619 regs = &ipr_cmd->i.ata_ioadl.regs;
4620 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4621 } else
4622 regs = &ioarcb->u.add_data.u.regs;
4623
4624 ioarcb->res_handle = res->res_handle;
4625 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4626 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4627 if (ipr_is_gata(res)) {
4628 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
4629 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
4630 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4631 }
4632
4633 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4634 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4635 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4636 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4637 if (ipr_cmd->ioa_cfg->sis64)
4638 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4639 sizeof(struct ipr_ioasa_gata));
4640 else
4641 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4642 sizeof(struct ipr_ioasa_gata));
4643 }
4644
4645 LEAVE;
4646 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
4647 }
4648
4649 /**
4650 * ipr_sata_reset - Reset the SATA port
4651 * @link: SATA link to reset
4652 * @classes: class of the attached device
4653 *
4654 * This function issues a SATA phy reset to the affected ATA link.
4655 *
4656 * Return value:
4657 * 0 on success / non-zero on failure
4658 **/
4659 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
4660 unsigned long deadline)
4661 {
4662 struct ipr_sata_port *sata_port = link->ap->private_data;
4663 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4664 struct ipr_resource_entry *res;
4665 unsigned long lock_flags = 0;
4666 int rc = -ENXIO;
4667
4668 ENTER;
4669 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4670 while(ioa_cfg->in_reset_reload) {
4671 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4672 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4673 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4674 }
4675
4676 res = sata_port->res;
4677 if (res) {
4678 rc = ipr_device_reset(ioa_cfg, res);
4679 *classes = res->ata_class;
4680 }
4681
4682 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4683 LEAVE;
4684 return rc;
4685 }
4686
4687 /**
4688 * ipr_eh_dev_reset - Reset the device
4689 * @scsi_cmd: scsi command struct
4690 *
4691 * This function issues a device reset to the affected device.
4692 * A LUN reset will be sent to the device first. If that does
4693 * not work, a target reset will be sent.
4694 *
4695 * Return value:
4696 * SUCCESS / FAILED
4697 **/
4698 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
4699 {
4700 struct ipr_cmnd *ipr_cmd;
4701 struct ipr_ioa_cfg *ioa_cfg;
4702 struct ipr_resource_entry *res;
4703 struct ata_port *ap;
4704 int rc = 0;
4705
4706 ENTER;
4707 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4708 res = scsi_cmd->device->hostdata;
4709
4710 if (!res)
4711 return FAILED;
4712
4713 /*
4714 * If we are currently going through reset/reload, return failed. This will force the
4715 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4716 * reset to complete
4717 */
4718 if (ioa_cfg->in_reset_reload)
4719 return FAILED;
4720 if (ioa_cfg->ioa_is_dead)
4721 return FAILED;
4722
4723 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4724 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4725 if (ipr_cmd->scsi_cmd)
4726 ipr_cmd->done = ipr_scsi_eh_done;
4727 if (ipr_cmd->qc)
4728 ipr_cmd->done = ipr_sata_eh_done;
4729 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4730 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4731 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4732 }
4733 }
4734 }
4735
4736 res->resetting_device = 1;
4737 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
4738
4739 if (ipr_is_gata(res) && res->sata_port) {
4740 ap = res->sata_port->ap;
4741 spin_unlock_irq(scsi_cmd->device->host->host_lock);
4742 ata_std_error_handler(ap);
4743 spin_lock_irq(scsi_cmd->device->host->host_lock);
4744
4745 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4746 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4747 rc = -EIO;
4748 break;
4749 }
4750 }
4751 } else
4752 rc = ipr_device_reset(ioa_cfg, res);
4753 res->resetting_device = 0;
4754
4755 LEAVE;
4756 return (rc ? FAILED : SUCCESS);
4757 }
4758
4759 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
4760 {
4761 int rc;
4762
4763 spin_lock_irq(cmd->device->host->host_lock);
4764 rc = __ipr_eh_dev_reset(cmd);
4765 spin_unlock_irq(cmd->device->host->host_lock);
4766
4767 return rc;
4768 }
4769
4770 /**
4771 * ipr_bus_reset_done - Op done function for bus reset.
4772 * @ipr_cmd: ipr command struct
4773 *
4774 * This function is the op done function for a bus reset
4775 *
4776 * Return value:
4777 * none
4778 **/
4779 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
4780 {
4781 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4782 struct ipr_resource_entry *res;
4783
4784 ENTER;
4785 if (!ioa_cfg->sis64)
4786 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4787 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
4788 scsi_report_bus_reset(ioa_cfg->host, res->bus);
4789 break;
4790 }
4791 }
4792
4793 /*
4794 * If abort has not completed, indicate the reset has, else call the
4795 * abort's done function to wake the sleeping eh thread
4796 */
4797 if (ipr_cmd->sibling->sibling)
4798 ipr_cmd->sibling->sibling = NULL;
4799 else
4800 ipr_cmd->sibling->done(ipr_cmd->sibling);
4801
4802 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4803 LEAVE;
4804 }
4805
4806 /**
4807 * ipr_abort_timeout - An abort task has timed out
4808 * @ipr_cmd: ipr command struct
4809 *
4810 * This function handles when an abort task times out. If this
4811 * happens we issue a bus reset since we have resources tied
4812 * up that must be freed before returning to the midlayer.
4813 *
4814 * Return value:
4815 * none
4816 **/
4817 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4818 {
4819 struct ipr_cmnd *reset_cmd;
4820 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4821 struct ipr_cmd_pkt *cmd_pkt;
4822 unsigned long lock_flags = 0;
4823
4824 ENTER;
4825 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4826 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4827 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4828 return;
4829 }
4830
4831 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4832 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4833 ipr_cmd->sibling = reset_cmd;
4834 reset_cmd->sibling = ipr_cmd;
4835 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4836 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4837 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4838 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4839 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4840
4841 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4842 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4843 LEAVE;
4844 }
4845
4846 /**
4847 * ipr_cancel_op - Cancel specified op
4848 * @scsi_cmd: scsi command struct
4849 *
4850 * This function cancels specified op.
4851 *
4852 * Return value:
4853 * SUCCESS / FAILED
4854 **/
4855 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4856 {
4857 struct ipr_cmnd *ipr_cmd;
4858 struct ipr_ioa_cfg *ioa_cfg;
4859 struct ipr_resource_entry *res;
4860 struct ipr_cmd_pkt *cmd_pkt;
4861 u32 ioasc;
4862 int op_found = 0;
4863
4864 ENTER;
4865 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4866 res = scsi_cmd->device->hostdata;
4867
4868 /* If we are currently going through reset/reload, return failed.
4869 * This will force the mid-layer to call ipr_eh_host_reset,
4870 * which will then go to sleep and wait for the reset to complete
4871 */
4872 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4873 return FAILED;
4874 if (!res || !ipr_is_gscsi(res))
4875 return FAILED;
4876
4877 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4878 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4879 ipr_cmd->done = ipr_scsi_eh_done;
4880 op_found = 1;
4881 break;
4882 }
4883 }
4884
4885 if (!op_found)
4886 return SUCCESS;
4887
4888 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4889 ipr_cmd->ioarcb.res_handle = res->res_handle;
4890 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4891 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4892 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4893 ipr_cmd->u.sdev = scsi_cmd->device;
4894
4895 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4896 scsi_cmd->cmnd[0]);
4897 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4898 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4899
4900 /*
4901 * If the abort task timed out and we sent a bus reset, we will get
4902 * one the following responses to the abort
4903 */
4904 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4905 ioasc = 0;
4906 ipr_trace;
4907 }
4908
4909 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4910 if (!ipr_is_naca_model(res))
4911 res->needs_sync_complete = 1;
4912
4913 LEAVE;
4914 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4915 }
4916
4917 /**
4918 * ipr_eh_abort - Abort a single op
4919 * @scsi_cmd: scsi command struct
4920 *
4921 * Return value:
4922 * SUCCESS / FAILED
4923 **/
4924 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4925 {
4926 unsigned long flags;
4927 int rc;
4928
4929 ENTER;
4930
4931 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4932 rc = ipr_cancel_op(scsi_cmd);
4933 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4934
4935 LEAVE;
4936 return rc;
4937 }
4938
4939 /**
4940 * ipr_handle_other_interrupt - Handle "other" interrupts
4941 * @ioa_cfg: ioa config struct
4942 * @int_reg: interrupt register
4943 *
4944 * Return value:
4945 * IRQ_NONE / IRQ_HANDLED
4946 **/
4947 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4948 volatile u32 int_reg)
4949 {
4950 irqreturn_t rc = IRQ_HANDLED;
4951
4952 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4953 /* Mask the interrupt */
4954 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4955
4956 /* Clear the interrupt */
4957 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4958 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4959
4960 list_del(&ioa_cfg->reset_cmd->queue);
4961 del_timer(&ioa_cfg->reset_cmd->timer);
4962 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4963 } else {
4964 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4965 ioa_cfg->ioa_unit_checked = 1;
4966 else
4967 dev_err(&ioa_cfg->pdev->dev,
4968 "Permanent IOA failure. 0x%08X\n", int_reg);
4969
4970 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4971 ioa_cfg->sdt_state = GET_DUMP;
4972
4973 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4974 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4975 }
4976
4977 return rc;
4978 }
4979
4980 /**
4981 * ipr_isr_eh - Interrupt service routine error handler
4982 * @ioa_cfg: ioa config struct
4983 * @msg: message to log
4984 *
4985 * Return value:
4986 * none
4987 **/
4988 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
4989 {
4990 ioa_cfg->errors_logged++;
4991 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
4992
4993 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4994 ioa_cfg->sdt_state = GET_DUMP;
4995
4996 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4997 }
4998
4999 /**
5000 * ipr_isr - Interrupt service routine
5001 * @irq: irq number
5002 * @devp: pointer to ioa config struct
5003 *
5004 * Return value:
5005 * IRQ_NONE / IRQ_HANDLED
5006 **/
5007 static irqreturn_t ipr_isr(int irq, void *devp)
5008 {
5009 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
5010 unsigned long lock_flags = 0;
5011 volatile u32 int_reg, int_mask_reg;
5012 u32 ioasc;
5013 u16 cmd_index;
5014 int num_hrrq = 0;
5015 struct ipr_cmnd *ipr_cmd;
5016 irqreturn_t rc = IRQ_NONE;
5017
5018 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5019
5020 /* If interrupts are disabled, ignore the interrupt */
5021 if (!ioa_cfg->allow_interrupts) {
5022 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5023 return IRQ_NONE;
5024 }
5025
5026 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5027 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
5028
5029 /* If an interrupt on the adapter did not occur, ignore it.
5030 * Or in the case of SIS 64, check for a stage change interrupt.
5031 */
5032 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
5033 if (ioa_cfg->sis64) {
5034 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5035 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5036 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5037
5038 /* clear stage change */
5039 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5040 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5041 list_del(&ioa_cfg->reset_cmd->queue);
5042 del_timer(&ioa_cfg->reset_cmd->timer);
5043 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5044 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5045 return IRQ_HANDLED;
5046 }
5047 }
5048
5049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5050 return IRQ_NONE;
5051 }
5052
5053 while (1) {
5054 ipr_cmd = NULL;
5055
5056 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5057 ioa_cfg->toggle_bit) {
5058
5059 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
5060 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5061
5062 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
5063 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
5064 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5065 return IRQ_HANDLED;
5066 }
5067
5068 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5069
5070 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5071
5072 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5073
5074 list_del(&ipr_cmd->queue);
5075 del_timer(&ipr_cmd->timer);
5076 ipr_cmd->done(ipr_cmd);
5077
5078 rc = IRQ_HANDLED;
5079
5080 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
5081 ioa_cfg->hrrq_curr++;
5082 } else {
5083 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5084 ioa_cfg->toggle_bit ^= 1u;
5085 }
5086 }
5087
5088 if (ipr_cmd != NULL) {
5089 /* Clear the PCI interrupt */
5090 do {
5091 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5092 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
5093 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5094 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5095
5096 if (int_reg & IPR_PCII_HRRQ_UPDATED) {
5097 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
5098 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5099 return IRQ_HANDLED;
5100 }
5101
5102 } else
5103 break;
5104 }
5105
5106 if (unlikely(rc == IRQ_NONE))
5107 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5108
5109 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5110 return rc;
5111 }
5112
5113 /**
5114 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5115 * @ioa_cfg: ioa config struct
5116 * @ipr_cmd: ipr command struct
5117 *
5118 * Return value:
5119 * 0 on success / -1 on failure
5120 **/
5121 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5122 struct ipr_cmnd *ipr_cmd)
5123 {
5124 int i, nseg;
5125 struct scatterlist *sg;
5126 u32 length;
5127 u32 ioadl_flags = 0;
5128 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5129 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5130 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5131
5132 length = scsi_bufflen(scsi_cmd);
5133 if (!length)
5134 return 0;
5135
5136 nseg = scsi_dma_map(scsi_cmd);
5137 if (nseg < 0) {
5138 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5139 return -1;
5140 }
5141
5142 ipr_cmd->dma_use_sg = nseg;
5143
5144 ioarcb->data_transfer_length = cpu_to_be32(length);
5145 ioarcb->ioadl_len =
5146 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5147
5148 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5149 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5150 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5151 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5152 ioadl_flags = IPR_IOADL_FLAGS_READ;
5153
5154 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5155 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5156 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5157 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5158 }
5159
5160 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5161 return 0;
5162 }
5163
5164 /**
5165 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5166 * @ioa_cfg: ioa config struct
5167 * @ipr_cmd: ipr command struct
5168 *
5169 * Return value:
5170 * 0 on success / -1 on failure
5171 **/
5172 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5173 struct ipr_cmnd *ipr_cmd)
5174 {
5175 int i, nseg;
5176 struct scatterlist *sg;
5177 u32 length;
5178 u32 ioadl_flags = 0;
5179 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5180 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5181 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5182
5183 length = scsi_bufflen(scsi_cmd);
5184 if (!length)
5185 return 0;
5186
5187 nseg = scsi_dma_map(scsi_cmd);
5188 if (nseg < 0) {
5189 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5190 return -1;
5191 }
5192
5193 ipr_cmd->dma_use_sg = nseg;
5194
5195 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5196 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5197 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5198 ioarcb->data_transfer_length = cpu_to_be32(length);
5199 ioarcb->ioadl_len =
5200 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5201 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5202 ioadl_flags = IPR_IOADL_FLAGS_READ;
5203 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5204 ioarcb->read_ioadl_len =
5205 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5206 }
5207
5208 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5209 ioadl = ioarcb->u.add_data.u.ioadl;
5210 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5211 offsetof(struct ipr_ioarcb, u.add_data));
5212 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5213 }
5214
5215 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5216 ioadl[i].flags_and_data_len =
5217 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5218 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5219 }
5220
5221 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5222 return 0;
5223 }
5224
5225 /**
5226 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5227 * @scsi_cmd: scsi command struct
5228 *
5229 * Return value:
5230 * task attributes
5231 **/
5232 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5233 {
5234 u8 tag[2];
5235 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5236
5237 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5238 switch (tag[0]) {
5239 case MSG_SIMPLE_TAG:
5240 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5241 break;
5242 case MSG_HEAD_TAG:
5243 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5244 break;
5245 case MSG_ORDERED_TAG:
5246 rc = IPR_FLAGS_LO_ORDERED_TASK;
5247 break;
5248 };
5249 }
5250
5251 return rc;
5252 }
5253
5254 /**
5255 * ipr_erp_done - Process completion of ERP for a device
5256 * @ipr_cmd: ipr command struct
5257 *
5258 * This function copies the sense buffer into the scsi_cmd
5259 * struct and pushes the scsi_done function.
5260 *
5261 * Return value:
5262 * nothing
5263 **/
5264 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5265 {
5266 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5267 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5268 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5269 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5270
5271 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5272 scsi_cmd->result |= (DID_ERROR << 16);
5273 scmd_printk(KERN_ERR, scsi_cmd,
5274 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5275 } else {
5276 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5277 SCSI_SENSE_BUFFERSIZE);
5278 }
5279
5280 if (res) {
5281 if (!ipr_is_naca_model(res))
5282 res->needs_sync_complete = 1;
5283 res->in_erp = 0;
5284 }
5285 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5286 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5287 scsi_cmd->scsi_done(scsi_cmd);
5288 }
5289
5290 /**
5291 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5292 * @ipr_cmd: ipr command struct
5293 *
5294 * Return value:
5295 * none
5296 **/
5297 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5298 {
5299 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5300 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5301 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5302
5303 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5304 ioarcb->data_transfer_length = 0;
5305 ioarcb->read_data_transfer_length = 0;
5306 ioarcb->ioadl_len = 0;
5307 ioarcb->read_ioadl_len = 0;
5308 ioasa->hdr.ioasc = 0;
5309 ioasa->hdr.residual_data_len = 0;
5310
5311 if (ipr_cmd->ioa_cfg->sis64)
5312 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5313 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5314 else {
5315 ioarcb->write_ioadl_addr =
5316 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5317 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5318 }
5319 }
5320
5321 /**
5322 * ipr_erp_request_sense - Send request sense to a device
5323 * @ipr_cmd: ipr command struct
5324 *
5325 * This function sends a request sense to a device as a result
5326 * of a check condition.
5327 *
5328 * Return value:
5329 * nothing
5330 **/
5331 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5332 {
5333 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5334 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5335
5336 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5337 ipr_erp_done(ipr_cmd);
5338 return;
5339 }
5340
5341 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5342
5343 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5344 cmd_pkt->cdb[0] = REQUEST_SENSE;
5345 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5346 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5347 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5348 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5349
5350 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5351 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5352
5353 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5354 IPR_REQUEST_SENSE_TIMEOUT * 2);
5355 }
5356
5357 /**
5358 * ipr_erp_cancel_all - Send cancel all to a device
5359 * @ipr_cmd: ipr command struct
5360 *
5361 * This function sends a cancel all to a device to clear the
5362 * queue. If we are running TCQ on the device, QERR is set to 1,
5363 * which means all outstanding ops have been dropped on the floor.
5364 * Cancel all will return them to us.
5365 *
5366 * Return value:
5367 * nothing
5368 **/
5369 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5370 {
5371 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5372 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5373 struct ipr_cmd_pkt *cmd_pkt;
5374
5375 res->in_erp = 1;
5376
5377 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5378
5379 if (!scsi_get_tag_type(scsi_cmd->device)) {
5380 ipr_erp_request_sense(ipr_cmd);
5381 return;
5382 }
5383
5384 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5385 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5386 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5387
5388 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5389 IPR_CANCEL_ALL_TIMEOUT);
5390 }
5391
5392 /**
5393 * ipr_dump_ioasa - Dump contents of IOASA
5394 * @ioa_cfg: ioa config struct
5395 * @ipr_cmd: ipr command struct
5396 * @res: resource entry struct
5397 *
5398 * This function is invoked by the interrupt handler when ops
5399 * fail. It will log the IOASA if appropriate. Only called
5400 * for GPDD ops.
5401 *
5402 * Return value:
5403 * none
5404 **/
5405 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5406 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5407 {
5408 int i;
5409 u16 data_len;
5410 u32 ioasc, fd_ioasc;
5411 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5412 __be32 *ioasa_data = (__be32 *)ioasa;
5413 int error_index;
5414
5415 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5416 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5417
5418 if (0 == ioasc)
5419 return;
5420
5421 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5422 return;
5423
5424 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5425 error_index = ipr_get_error(fd_ioasc);
5426 else
5427 error_index = ipr_get_error(ioasc);
5428
5429 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5430 /* Don't log an error if the IOA already logged one */
5431 if (ioasa->hdr.ilid != 0)
5432 return;
5433
5434 if (!ipr_is_gscsi(res))
5435 return;
5436
5437 if (ipr_error_table[error_index].log_ioasa == 0)
5438 return;
5439 }
5440
5441 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5442
5443 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5444 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5445 data_len = sizeof(struct ipr_ioasa64);
5446 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
5447 data_len = sizeof(struct ipr_ioasa);
5448
5449 ipr_err("IOASA Dump:\n");
5450
5451 for (i = 0; i < data_len / 4; i += 4) {
5452 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5453 be32_to_cpu(ioasa_data[i]),
5454 be32_to_cpu(ioasa_data[i+1]),
5455 be32_to_cpu(ioasa_data[i+2]),
5456 be32_to_cpu(ioasa_data[i+3]));
5457 }
5458 }
5459
5460 /**
5461 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5462 * @ioasa: IOASA
5463 * @sense_buf: sense data buffer
5464 *
5465 * Return value:
5466 * none
5467 **/
5468 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5469 {
5470 u32 failing_lba;
5471 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5472 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5473 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5474 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
5475
5476 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5477
5478 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5479 return;
5480
5481 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5482
5483 if (ipr_is_vset_device(res) &&
5484 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5485 ioasa->u.vset.failing_lba_hi != 0) {
5486 sense_buf[0] = 0x72;
5487 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5488 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5489 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5490
5491 sense_buf[7] = 12;
5492 sense_buf[8] = 0;
5493 sense_buf[9] = 0x0A;
5494 sense_buf[10] = 0x80;
5495
5496 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5497
5498 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5499 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5500 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5501 sense_buf[15] = failing_lba & 0x000000ff;
5502
5503 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5504
5505 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5506 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5507 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5508 sense_buf[19] = failing_lba & 0x000000ff;
5509 } else {
5510 sense_buf[0] = 0x70;
5511 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5512 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5513 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5514
5515 /* Illegal request */
5516 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
5517 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
5518 sense_buf[7] = 10; /* additional length */
5519
5520 /* IOARCB was in error */
5521 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5522 sense_buf[15] = 0xC0;
5523 else /* Parameter data was invalid */
5524 sense_buf[15] = 0x80;
5525
5526 sense_buf[16] =
5527 ((IPR_FIELD_POINTER_MASK &
5528 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
5529 sense_buf[17] =
5530 (IPR_FIELD_POINTER_MASK &
5531 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
5532 } else {
5533 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5534 if (ipr_is_vset_device(res))
5535 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5536 else
5537 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5538
5539 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5540 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5541 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5542 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5543 sense_buf[6] = failing_lba & 0x000000ff;
5544 }
5545
5546 sense_buf[7] = 6; /* additional length */
5547 }
5548 }
5549 }
5550
5551 /**
5552 * ipr_get_autosense - Copy autosense data to sense buffer
5553 * @ipr_cmd: ipr command struct
5554 *
5555 * This function copies the autosense buffer to the buffer
5556 * in the scsi_cmd, if there is autosense available.
5557 *
5558 * Return value:
5559 * 1 if autosense was available / 0 if not
5560 **/
5561 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5562 {
5563 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5564 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
5565
5566 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
5567 return 0;
5568
5569 if (ipr_cmd->ioa_cfg->sis64)
5570 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
5571 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
5572 SCSI_SENSE_BUFFERSIZE));
5573 else
5574 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5575 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5576 SCSI_SENSE_BUFFERSIZE));
5577 return 1;
5578 }
5579
5580 /**
5581 * ipr_erp_start - Process an error response for a SCSI op
5582 * @ioa_cfg: ioa config struct
5583 * @ipr_cmd: ipr command struct
5584 *
5585 * This function determines whether or not to initiate ERP
5586 * on the affected device.
5587 *
5588 * Return value:
5589 * nothing
5590 **/
5591 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5592 struct ipr_cmnd *ipr_cmd)
5593 {
5594 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5595 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5596 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5597 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
5598
5599 if (!res) {
5600 ipr_scsi_eh_done(ipr_cmd);
5601 return;
5602 }
5603
5604 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
5605 ipr_gen_sense(ipr_cmd);
5606
5607 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5608
5609 switch (masked_ioasc) {
5610 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
5611 if (ipr_is_naca_model(res))
5612 scsi_cmd->result |= (DID_ABORT << 16);
5613 else
5614 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5615 break;
5616 case IPR_IOASC_IR_RESOURCE_HANDLE:
5617 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
5618 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5619 break;
5620 case IPR_IOASC_HW_SEL_TIMEOUT:
5621 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5622 if (!ipr_is_naca_model(res))
5623 res->needs_sync_complete = 1;
5624 break;
5625 case IPR_IOASC_SYNC_REQUIRED:
5626 if (!res->in_erp)
5627 res->needs_sync_complete = 1;
5628 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5629 break;
5630 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
5631 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
5632 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5633 break;
5634 case IPR_IOASC_BUS_WAS_RESET:
5635 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5636 /*
5637 * Report the bus reset and ask for a retry. The device
5638 * will give CC/UA the next command.
5639 */
5640 if (!res->resetting_device)
5641 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
5642 scsi_cmd->result |= (DID_ERROR << 16);
5643 if (!ipr_is_naca_model(res))
5644 res->needs_sync_complete = 1;
5645 break;
5646 case IPR_IOASC_HW_DEV_BUS_STATUS:
5647 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
5648 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
5649 if (!ipr_get_autosense(ipr_cmd)) {
5650 if (!ipr_is_naca_model(res)) {
5651 ipr_erp_cancel_all(ipr_cmd);
5652 return;
5653 }
5654 }
5655 }
5656 if (!ipr_is_naca_model(res))
5657 res->needs_sync_complete = 1;
5658 break;
5659 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
5660 break;
5661 default:
5662 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5663 scsi_cmd->result |= (DID_ERROR << 16);
5664 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
5665 res->needs_sync_complete = 1;
5666 break;
5667 }
5668
5669 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5670 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5671 scsi_cmd->scsi_done(scsi_cmd);
5672 }
5673
5674 /**
5675 * ipr_scsi_done - mid-layer done function
5676 * @ipr_cmd: ipr command struct
5677 *
5678 * This function is invoked by the interrupt handler for
5679 * ops generated by the SCSI mid-layer
5680 *
5681 * Return value:
5682 * none
5683 **/
5684 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
5685 {
5686 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5687 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5688 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5689
5690 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
5691
5692 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
5693 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5694 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5695 scsi_cmd->scsi_done(scsi_cmd);
5696 } else
5697 ipr_erp_start(ioa_cfg, ipr_cmd);
5698 }
5699
5700 /**
5701 * ipr_queuecommand - Queue a mid-layer request
5702 * @scsi_cmd: scsi command struct
5703 * @done: done function
5704 *
5705 * This function queues a request generated by the mid-layer.
5706 *
5707 * Return value:
5708 * 0 on success
5709 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
5710 * SCSI_MLQUEUE_HOST_BUSY if host is busy
5711 **/
5712 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
5713 void (*done) (struct scsi_cmnd *))
5714 {
5715 struct ipr_ioa_cfg *ioa_cfg;
5716 struct ipr_resource_entry *res;
5717 struct ipr_ioarcb *ioarcb;
5718 struct ipr_cmnd *ipr_cmd;
5719 int rc = 0;
5720
5721 scsi_cmd->scsi_done = done;
5722 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5723 res = scsi_cmd->device->hostdata;
5724 scsi_cmd->result = (DID_OK << 16);
5725
5726 /*
5727 * We are currently blocking all devices due to a host reset
5728 * We have told the host to stop giving us new requests, but
5729 * ERP ops don't count. FIXME
5730 */
5731 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
5732 return SCSI_MLQUEUE_HOST_BUSY;
5733
5734 /*
5735 * FIXME - Create scsi_set_host_offline interface
5736 * and the ioa_is_dead check can be removed
5737 */
5738 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
5739 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
5740 scsi_cmd->result = (DID_NO_CONNECT << 16);
5741 scsi_cmd->scsi_done(scsi_cmd);
5742 return 0;
5743 }
5744
5745 if (ipr_is_gata(res) && res->sata_port)
5746 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
5747
5748 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5749 ioarcb = &ipr_cmd->ioarcb;
5750 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5751
5752 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
5753 ipr_cmd->scsi_cmd = scsi_cmd;
5754 ioarcb->res_handle = res->res_handle;
5755 ipr_cmd->done = ipr_scsi_done;
5756 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
5757
5758 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
5759 if (scsi_cmd->underflow == 0)
5760 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5761
5762 if (res->needs_sync_complete) {
5763 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
5764 res->needs_sync_complete = 0;
5765 }
5766
5767 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5768 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
5769 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
5770 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
5771 }
5772
5773 if (scsi_cmd->cmnd[0] >= 0xC0 &&
5774 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
5775 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5776
5777 if (likely(rc == 0)) {
5778 if (ioa_cfg->sis64)
5779 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
5780 else
5781 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
5782 }
5783
5784 if (likely(rc == 0)) {
5785 mb();
5786 ipr_send_command(ipr_cmd);
5787 } else {
5788 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5789 return SCSI_MLQUEUE_HOST_BUSY;
5790 }
5791
5792 return 0;
5793 }
5794
5795 /**
5796 * ipr_ioctl - IOCTL handler
5797 * @sdev: scsi device struct
5798 * @cmd: IOCTL cmd
5799 * @arg: IOCTL arg
5800 *
5801 * Return value:
5802 * 0 on success / other on failure
5803 **/
5804 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5805 {
5806 struct ipr_resource_entry *res;
5807
5808 res = (struct ipr_resource_entry *)sdev->hostdata;
5809 if (res && ipr_is_gata(res)) {
5810 if (cmd == HDIO_GET_IDENTITY)
5811 return -ENOTTY;
5812 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
5813 }
5814
5815 return -EINVAL;
5816 }
5817
5818 /**
5819 * ipr_info - Get information about the card/driver
5820 * @scsi_host: scsi host struct
5821 *
5822 * Return value:
5823 * pointer to buffer with description string
5824 **/
5825 static const char * ipr_ioa_info(struct Scsi_Host *host)
5826 {
5827 static char buffer[512];
5828 struct ipr_ioa_cfg *ioa_cfg;
5829 unsigned long lock_flags = 0;
5830
5831 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
5832
5833 spin_lock_irqsave(host->host_lock, lock_flags);
5834 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
5835 spin_unlock_irqrestore(host->host_lock, lock_flags);
5836
5837 return buffer;
5838 }
5839
5840 static struct scsi_host_template driver_template = {
5841 .module = THIS_MODULE,
5842 .name = "IPR",
5843 .info = ipr_ioa_info,
5844 .ioctl = ipr_ioctl,
5845 .queuecommand = ipr_queuecommand,
5846 .eh_abort_handler = ipr_eh_abort,
5847 .eh_device_reset_handler = ipr_eh_dev_reset,
5848 .eh_host_reset_handler = ipr_eh_host_reset,
5849 .slave_alloc = ipr_slave_alloc,
5850 .slave_configure = ipr_slave_configure,
5851 .slave_destroy = ipr_slave_destroy,
5852 .target_alloc = ipr_target_alloc,
5853 .target_destroy = ipr_target_destroy,
5854 .change_queue_depth = ipr_change_queue_depth,
5855 .change_queue_type = ipr_change_queue_type,
5856 .bios_param = ipr_biosparam,
5857 .can_queue = IPR_MAX_COMMANDS,
5858 .this_id = -1,
5859 .sg_tablesize = IPR_MAX_SGLIST,
5860 .max_sectors = IPR_IOA_MAX_SECTORS,
5861 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5862 .use_clustering = ENABLE_CLUSTERING,
5863 .shost_attrs = ipr_ioa_attrs,
5864 .sdev_attrs = ipr_dev_attrs,
5865 .proc_name = IPR_NAME
5866 };
5867
5868 /**
5869 * ipr_ata_phy_reset - libata phy_reset handler
5870 * @ap: ata port to reset
5871 *
5872 **/
5873 static void ipr_ata_phy_reset(struct ata_port *ap)
5874 {
5875 unsigned long flags;
5876 struct ipr_sata_port *sata_port = ap->private_data;
5877 struct ipr_resource_entry *res = sata_port->res;
5878 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5879 int rc;
5880
5881 ENTER;
5882 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5883 while(ioa_cfg->in_reset_reload) {
5884 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5885 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5886 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5887 }
5888
5889 if (!ioa_cfg->allow_cmds)
5890 goto out_unlock;
5891
5892 rc = ipr_device_reset(ioa_cfg, res);
5893
5894 if (rc) {
5895 ap->link.device[0].class = ATA_DEV_NONE;
5896 goto out_unlock;
5897 }
5898
5899 ap->link.device[0].class = res->ata_class;
5900 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
5901 ap->link.device[0].class = ATA_DEV_NONE;
5902
5903 out_unlock:
5904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5905 LEAVE;
5906 }
5907
5908 /**
5909 * ipr_ata_post_internal - Cleanup after an internal command
5910 * @qc: ATA queued command
5911 *
5912 * Return value:
5913 * none
5914 **/
5915 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5916 {
5917 struct ipr_sata_port *sata_port = qc->ap->private_data;
5918 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5919 struct ipr_cmnd *ipr_cmd;
5920 unsigned long flags;
5921
5922 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5923 while(ioa_cfg->in_reset_reload) {
5924 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5925 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5926 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5927 }
5928
5929 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5930 if (ipr_cmd->qc == qc) {
5931 ipr_device_reset(ioa_cfg, sata_port->res);
5932 break;
5933 }
5934 }
5935 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5936 }
5937
5938 /**
5939 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5940 * @regs: destination
5941 * @tf: source ATA taskfile
5942 *
5943 * Return value:
5944 * none
5945 **/
5946 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5947 struct ata_taskfile *tf)
5948 {
5949 regs->feature = tf->feature;
5950 regs->nsect = tf->nsect;
5951 regs->lbal = tf->lbal;
5952 regs->lbam = tf->lbam;
5953 regs->lbah = tf->lbah;
5954 regs->device = tf->device;
5955 regs->command = tf->command;
5956 regs->hob_feature = tf->hob_feature;
5957 regs->hob_nsect = tf->hob_nsect;
5958 regs->hob_lbal = tf->hob_lbal;
5959 regs->hob_lbam = tf->hob_lbam;
5960 regs->hob_lbah = tf->hob_lbah;
5961 regs->ctl = tf->ctl;
5962 }
5963
5964 /**
5965 * ipr_sata_done - done function for SATA commands
5966 * @ipr_cmd: ipr command struct
5967 *
5968 * This function is invoked by the interrupt handler for
5969 * ops generated by the SCSI mid-layer to SATA devices
5970 *
5971 * Return value:
5972 * none
5973 **/
5974 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5975 {
5976 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5977 struct ata_queued_cmd *qc = ipr_cmd->qc;
5978 struct ipr_sata_port *sata_port = qc->ap->private_data;
5979 struct ipr_resource_entry *res = sata_port->res;
5980 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5981
5982 if (ipr_cmd->ioa_cfg->sis64)
5983 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5984 sizeof(struct ipr_ioasa_gata));
5985 else
5986 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5987 sizeof(struct ipr_ioasa_gata));
5988 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5989
5990 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5991 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
5992
5993 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5994 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
5995 else
5996 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
5997 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5998 ata_qc_complete(qc);
5999 }
6000
6001 /**
6002 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6003 * @ipr_cmd: ipr command struct
6004 * @qc: ATA queued command
6005 *
6006 **/
6007 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6008 struct ata_queued_cmd *qc)
6009 {
6010 u32 ioadl_flags = 0;
6011 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6012 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
6013 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6014 int len = qc->nbytes;
6015 struct scatterlist *sg;
6016 unsigned int si;
6017 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6018
6019 if (len == 0)
6020 return;
6021
6022 if (qc->dma_dir == DMA_TO_DEVICE) {
6023 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6024 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6025 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6026 ioadl_flags = IPR_IOADL_FLAGS_READ;
6027
6028 ioarcb->data_transfer_length = cpu_to_be32(len);
6029 ioarcb->ioadl_len =
6030 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6031 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6032 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
6033
6034 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6035 ioadl64->flags = cpu_to_be32(ioadl_flags);
6036 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6037 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6038
6039 last_ioadl64 = ioadl64;
6040 ioadl64++;
6041 }
6042
6043 if (likely(last_ioadl64))
6044 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6045 }
6046
6047 /**
6048 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6049 * @ipr_cmd: ipr command struct
6050 * @qc: ATA queued command
6051 *
6052 **/
6053 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6054 struct ata_queued_cmd *qc)
6055 {
6056 u32 ioadl_flags = 0;
6057 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6058 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6059 struct ipr_ioadl_desc *last_ioadl = NULL;
6060 int len = qc->nbytes;
6061 struct scatterlist *sg;
6062 unsigned int si;
6063
6064 if (len == 0)
6065 return;
6066
6067 if (qc->dma_dir == DMA_TO_DEVICE) {
6068 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6069 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6070 ioarcb->data_transfer_length = cpu_to_be32(len);
6071 ioarcb->ioadl_len =
6072 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6073 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6074 ioadl_flags = IPR_IOADL_FLAGS_READ;
6075 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6076 ioarcb->read_ioadl_len =
6077 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6078 }
6079
6080 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6081 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6082 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6083
6084 last_ioadl = ioadl;
6085 ioadl++;
6086 }
6087
6088 if (likely(last_ioadl))
6089 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6090 }
6091
6092 /**
6093 * ipr_qc_issue - Issue a SATA qc to a device
6094 * @qc: queued command
6095 *
6096 * Return value:
6097 * 0 if success
6098 **/
6099 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6100 {
6101 struct ata_port *ap = qc->ap;
6102 struct ipr_sata_port *sata_port = ap->private_data;
6103 struct ipr_resource_entry *res = sata_port->res;
6104 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6105 struct ipr_cmnd *ipr_cmd;
6106 struct ipr_ioarcb *ioarcb;
6107 struct ipr_ioarcb_ata_regs *regs;
6108
6109 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
6110 return AC_ERR_SYSTEM;
6111
6112 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6113 ioarcb = &ipr_cmd->ioarcb;
6114
6115 if (ioa_cfg->sis64) {
6116 regs = &ipr_cmd->i.ata_ioadl.regs;
6117 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6118 } else
6119 regs = &ioarcb->u.add_data.u.regs;
6120
6121 memset(regs, 0, sizeof(*regs));
6122 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6123
6124 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6125 ipr_cmd->qc = qc;
6126 ipr_cmd->done = ipr_sata_done;
6127 ipr_cmd->ioarcb.res_handle = res->res_handle;
6128 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6129 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6130 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6131 ipr_cmd->dma_use_sg = qc->n_elem;
6132
6133 if (ioa_cfg->sis64)
6134 ipr_build_ata_ioadl64(ipr_cmd, qc);
6135 else
6136 ipr_build_ata_ioadl(ipr_cmd, qc);
6137
6138 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6139 ipr_copy_sata_tf(regs, &qc->tf);
6140 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6141 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6142
6143 switch (qc->tf.protocol) {
6144 case ATA_PROT_NODATA:
6145 case ATA_PROT_PIO:
6146 break;
6147
6148 case ATA_PROT_DMA:
6149 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6150 break;
6151
6152 case ATAPI_PROT_PIO:
6153 case ATAPI_PROT_NODATA:
6154 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6155 break;
6156
6157 case ATAPI_PROT_DMA:
6158 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6159 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6160 break;
6161
6162 default:
6163 WARN_ON(1);
6164 return AC_ERR_INVALID;
6165 }
6166
6167 mb();
6168
6169 ipr_send_command(ipr_cmd);
6170
6171 return 0;
6172 }
6173
6174 /**
6175 * ipr_qc_fill_rtf - Read result TF
6176 * @qc: ATA queued command
6177 *
6178 * Return value:
6179 * true
6180 **/
6181 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6182 {
6183 struct ipr_sata_port *sata_port = qc->ap->private_data;
6184 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6185 struct ata_taskfile *tf = &qc->result_tf;
6186
6187 tf->feature = g->error;
6188 tf->nsect = g->nsect;
6189 tf->lbal = g->lbal;
6190 tf->lbam = g->lbam;
6191 tf->lbah = g->lbah;
6192 tf->device = g->device;
6193 tf->command = g->status;
6194 tf->hob_nsect = g->hob_nsect;
6195 tf->hob_lbal = g->hob_lbal;
6196 tf->hob_lbam = g->hob_lbam;
6197 tf->hob_lbah = g->hob_lbah;
6198 tf->ctl = g->alt_status;
6199
6200 return true;
6201 }
6202
6203 static struct ata_port_operations ipr_sata_ops = {
6204 .phy_reset = ipr_ata_phy_reset,
6205 .hardreset = ipr_sata_reset,
6206 .post_internal_cmd = ipr_ata_post_internal,
6207 .qc_prep = ata_noop_qc_prep,
6208 .qc_issue = ipr_qc_issue,
6209 .qc_fill_rtf = ipr_qc_fill_rtf,
6210 .port_start = ata_sas_port_start,
6211 .port_stop = ata_sas_port_stop
6212 };
6213
6214 static struct ata_port_info sata_port_info = {
6215 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
6216 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
6217 .pio_mask = 0x10, /* pio4 */
6218 .mwdma_mask = 0x07,
6219 .udma_mask = 0x7f, /* udma0-6 */
6220 .port_ops = &ipr_sata_ops
6221 };
6222
6223 #ifdef CONFIG_PPC_PSERIES
6224 static const u16 ipr_blocked_processors[] = {
6225 PV_NORTHSTAR,
6226 PV_PULSAR,
6227 PV_POWER4,
6228 PV_ICESTAR,
6229 PV_SSTAR,
6230 PV_POWER4p,
6231 PV_630,
6232 PV_630p
6233 };
6234
6235 /**
6236 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6237 * @ioa_cfg: ioa cfg struct
6238 *
6239 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6240 * certain pSeries hardware. This function determines if the given
6241 * adapter is in one of these confgurations or not.
6242 *
6243 * Return value:
6244 * 1 if adapter is not supported / 0 if adapter is supported
6245 **/
6246 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6247 {
6248 int i;
6249
6250 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6251 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
6252 if (__is_processor(ipr_blocked_processors[i]))
6253 return 1;
6254 }
6255 }
6256 return 0;
6257 }
6258 #else
6259 #define ipr_invalid_adapter(ioa_cfg) 0
6260 #endif
6261
6262 /**
6263 * ipr_ioa_bringdown_done - IOA bring down completion.
6264 * @ipr_cmd: ipr command struct
6265 *
6266 * This function processes the completion of an adapter bring down.
6267 * It wakes any reset sleepers.
6268 *
6269 * Return value:
6270 * IPR_RC_JOB_RETURN
6271 **/
6272 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6273 {
6274 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6275
6276 ENTER;
6277 ioa_cfg->in_reset_reload = 0;
6278 ioa_cfg->reset_retries = 0;
6279 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6280 wake_up_all(&ioa_cfg->reset_wait_q);
6281
6282 spin_unlock_irq(ioa_cfg->host->host_lock);
6283 scsi_unblock_requests(ioa_cfg->host);
6284 spin_lock_irq(ioa_cfg->host->host_lock);
6285 LEAVE;
6286
6287 return IPR_RC_JOB_RETURN;
6288 }
6289
6290 /**
6291 * ipr_ioa_reset_done - IOA reset completion.
6292 * @ipr_cmd: ipr command struct
6293 *
6294 * This function processes the completion of an adapter reset.
6295 * It schedules any necessary mid-layer add/removes and
6296 * wakes any reset sleepers.
6297 *
6298 * Return value:
6299 * IPR_RC_JOB_RETURN
6300 **/
6301 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6302 {
6303 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6304 struct ipr_resource_entry *res;
6305 struct ipr_hostrcb *hostrcb, *temp;
6306 int i = 0;
6307
6308 ENTER;
6309 ioa_cfg->in_reset_reload = 0;
6310 ioa_cfg->allow_cmds = 1;
6311 ioa_cfg->reset_cmd = NULL;
6312 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6313
6314 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6315 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6316 ipr_trace;
6317 break;
6318 }
6319 }
6320 schedule_work(&ioa_cfg->work_q);
6321
6322 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6323 list_del(&hostrcb->queue);
6324 if (i++ < IPR_NUM_LOG_HCAMS)
6325 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6326 else
6327 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6328 }
6329
6330 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6331 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6332
6333 ioa_cfg->reset_retries = 0;
6334 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6335 wake_up_all(&ioa_cfg->reset_wait_q);
6336
6337 spin_unlock(ioa_cfg->host->host_lock);
6338 scsi_unblock_requests(ioa_cfg->host);
6339 spin_lock(ioa_cfg->host->host_lock);
6340
6341 if (!ioa_cfg->allow_cmds)
6342 scsi_block_requests(ioa_cfg->host);
6343
6344 LEAVE;
6345 return IPR_RC_JOB_RETURN;
6346 }
6347
6348 /**
6349 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6350 * @supported_dev: supported device struct
6351 * @vpids: vendor product id struct
6352 *
6353 * Return value:
6354 * none
6355 **/
6356 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6357 struct ipr_std_inq_vpids *vpids)
6358 {
6359 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6360 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6361 supported_dev->num_records = 1;
6362 supported_dev->data_length =
6363 cpu_to_be16(sizeof(struct ipr_supported_device));
6364 supported_dev->reserved = 0;
6365 }
6366
6367 /**
6368 * ipr_set_supported_devs - Send Set Supported Devices for a device
6369 * @ipr_cmd: ipr command struct
6370 *
6371 * This function sends a Set Supported Devices to the adapter
6372 *
6373 * Return value:
6374 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6375 **/
6376 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6377 {
6378 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6379 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6380 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6381 struct ipr_resource_entry *res = ipr_cmd->u.res;
6382
6383 ipr_cmd->job_step = ipr_ioa_reset_done;
6384
6385 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6386 if (!ipr_is_scsi_disk(res))
6387 continue;
6388
6389 ipr_cmd->u.res = res;
6390 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6391
6392 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6393 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6394 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6395
6396 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6397 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6398 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6399 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6400
6401 ipr_init_ioadl(ipr_cmd,
6402 ioa_cfg->vpd_cbs_dma +
6403 offsetof(struct ipr_misc_cbs, supp_dev),
6404 sizeof(struct ipr_supported_device),
6405 IPR_IOADL_FLAGS_WRITE_LAST);
6406
6407 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6408 IPR_SET_SUP_DEVICE_TIMEOUT);
6409
6410 if (!ioa_cfg->sis64)
6411 ipr_cmd->job_step = ipr_set_supported_devs;
6412 return IPR_RC_JOB_RETURN;
6413 }
6414
6415 return IPR_RC_JOB_CONTINUE;
6416 }
6417
6418 /**
6419 * ipr_get_mode_page - Locate specified mode page
6420 * @mode_pages: mode page buffer
6421 * @page_code: page code to find
6422 * @len: minimum required length for mode page
6423 *
6424 * Return value:
6425 * pointer to mode page / NULL on failure
6426 **/
6427 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6428 u32 page_code, u32 len)
6429 {
6430 struct ipr_mode_page_hdr *mode_hdr;
6431 u32 page_length;
6432 u32 length;
6433
6434 if (!mode_pages || (mode_pages->hdr.length == 0))
6435 return NULL;
6436
6437 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6438 mode_hdr = (struct ipr_mode_page_hdr *)
6439 (mode_pages->data + mode_pages->hdr.block_desc_len);
6440
6441 while (length) {
6442 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6443 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6444 return mode_hdr;
6445 break;
6446 } else {
6447 page_length = (sizeof(struct ipr_mode_page_hdr) +
6448 mode_hdr->page_length);
6449 length -= page_length;
6450 mode_hdr = (struct ipr_mode_page_hdr *)
6451 ((unsigned long)mode_hdr + page_length);
6452 }
6453 }
6454 return NULL;
6455 }
6456
6457 /**
6458 * ipr_check_term_power - Check for term power errors
6459 * @ioa_cfg: ioa config struct
6460 * @mode_pages: IOAFP mode pages buffer
6461 *
6462 * Check the IOAFP's mode page 28 for term power errors
6463 *
6464 * Return value:
6465 * nothing
6466 **/
6467 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6468 struct ipr_mode_pages *mode_pages)
6469 {
6470 int i;
6471 int entry_length;
6472 struct ipr_dev_bus_entry *bus;
6473 struct ipr_mode_page28 *mode_page;
6474
6475 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6476 sizeof(struct ipr_mode_page28));
6477
6478 entry_length = mode_page->entry_length;
6479
6480 bus = mode_page->bus;
6481
6482 for (i = 0; i < mode_page->num_entries; i++) {
6483 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6484 dev_err(&ioa_cfg->pdev->dev,
6485 "Term power is absent on scsi bus %d\n",
6486 bus->res_addr.bus);
6487 }
6488
6489 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6490 }
6491 }
6492
6493 /**
6494 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6495 * @ioa_cfg: ioa config struct
6496 *
6497 * Looks through the config table checking for SES devices. If
6498 * the SES device is in the SES table indicating a maximum SCSI
6499 * bus speed, the speed is limited for the bus.
6500 *
6501 * Return value:
6502 * none
6503 **/
6504 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6505 {
6506 u32 max_xfer_rate;
6507 int i;
6508
6509 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6510 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6511 ioa_cfg->bus_attr[i].bus_width);
6512
6513 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6514 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6515 }
6516 }
6517
6518 /**
6519 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6520 * @ioa_cfg: ioa config struct
6521 * @mode_pages: mode page 28 buffer
6522 *
6523 * Updates mode page 28 based on driver configuration
6524 *
6525 * Return value:
6526 * none
6527 **/
6528 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6529 struct ipr_mode_pages *mode_pages)
6530 {
6531 int i, entry_length;
6532 struct ipr_dev_bus_entry *bus;
6533 struct ipr_bus_attributes *bus_attr;
6534 struct ipr_mode_page28 *mode_page;
6535
6536 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6537 sizeof(struct ipr_mode_page28));
6538
6539 entry_length = mode_page->entry_length;
6540
6541 /* Loop for each device bus entry */
6542 for (i = 0, bus = mode_page->bus;
6543 i < mode_page->num_entries;
6544 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6545 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6546 dev_err(&ioa_cfg->pdev->dev,
6547 "Invalid resource address reported: 0x%08X\n",
6548 IPR_GET_PHYS_LOC(bus->res_addr));
6549 continue;
6550 }
6551
6552 bus_attr = &ioa_cfg->bus_attr[i];
6553 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6554 bus->bus_width = bus_attr->bus_width;
6555 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6556 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6557 if (bus_attr->qas_enabled)
6558 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6559 else
6560 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6561 }
6562 }
6563
6564 /**
6565 * ipr_build_mode_select - Build a mode select command
6566 * @ipr_cmd: ipr command struct
6567 * @res_handle: resource handle to send command to
6568 * @parm: Byte 2 of Mode Sense command
6569 * @dma_addr: DMA buffer address
6570 * @xfer_len: data transfer length
6571 *
6572 * Return value:
6573 * none
6574 **/
6575 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
6576 __be32 res_handle, u8 parm,
6577 dma_addr_t dma_addr, u8 xfer_len)
6578 {
6579 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6580
6581 ioarcb->res_handle = res_handle;
6582 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6583 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6584 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6585 ioarcb->cmd_pkt.cdb[1] = parm;
6586 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6587
6588 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
6589 }
6590
6591 /**
6592 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6593 * @ipr_cmd: ipr command struct
6594 *
6595 * This function sets up the SCSI bus attributes and sends
6596 * a Mode Select for Page 28 to activate them.
6597 *
6598 * Return value:
6599 * IPR_RC_JOB_RETURN
6600 **/
6601 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6602 {
6603 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6604 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6605 int length;
6606
6607 ENTER;
6608 ipr_scsi_bus_speed_limit(ioa_cfg);
6609 ipr_check_term_power(ioa_cfg, mode_pages);
6610 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6611 length = mode_pages->hdr.length + 1;
6612 mode_pages->hdr.length = 0;
6613
6614 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6615 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6616 length);
6617
6618 ipr_cmd->job_step = ipr_set_supported_devs;
6619 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6620 struct ipr_resource_entry, queue);
6621 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6622
6623 LEAVE;
6624 return IPR_RC_JOB_RETURN;
6625 }
6626
6627 /**
6628 * ipr_build_mode_sense - Builds a mode sense command
6629 * @ipr_cmd: ipr command struct
6630 * @res: resource entry struct
6631 * @parm: Byte 2 of mode sense command
6632 * @dma_addr: DMA address of mode sense buffer
6633 * @xfer_len: Size of DMA buffer
6634 *
6635 * Return value:
6636 * none
6637 **/
6638 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6639 __be32 res_handle,
6640 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
6641 {
6642 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6643
6644 ioarcb->res_handle = res_handle;
6645 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6646 ioarcb->cmd_pkt.cdb[2] = parm;
6647 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6648 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6649
6650 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6651 }
6652
6653 /**
6654 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6655 * @ipr_cmd: ipr command struct
6656 *
6657 * This function handles the failure of an IOA bringup command.
6658 *
6659 * Return value:
6660 * IPR_RC_JOB_RETURN
6661 **/
6662 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6663 {
6664 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6665 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6666
6667 dev_err(&ioa_cfg->pdev->dev,
6668 "0x%02X failed with IOASC: 0x%08X\n",
6669 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6670
6671 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6672 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6673 return IPR_RC_JOB_RETURN;
6674 }
6675
6676 /**
6677 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6678 * @ipr_cmd: ipr command struct
6679 *
6680 * This function handles the failure of a Mode Sense to the IOAFP.
6681 * Some adapters do not handle all mode pages.
6682 *
6683 * Return value:
6684 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6685 **/
6686 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6687 {
6688 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6689 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6690
6691 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6692 ipr_cmd->job_step = ipr_set_supported_devs;
6693 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6694 struct ipr_resource_entry, queue);
6695 return IPR_RC_JOB_CONTINUE;
6696 }
6697
6698 return ipr_reset_cmd_failed(ipr_cmd);
6699 }
6700
6701 /**
6702 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6703 * @ipr_cmd: ipr command struct
6704 *
6705 * This function send a Page 28 mode sense to the IOA to
6706 * retrieve SCSI bus attributes.
6707 *
6708 * Return value:
6709 * IPR_RC_JOB_RETURN
6710 **/
6711 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6712 {
6713 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6714
6715 ENTER;
6716 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6717 0x28, ioa_cfg->vpd_cbs_dma +
6718 offsetof(struct ipr_misc_cbs, mode_pages),
6719 sizeof(struct ipr_mode_pages));
6720
6721 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
6722 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
6723
6724 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6725
6726 LEAVE;
6727 return IPR_RC_JOB_RETURN;
6728 }
6729
6730 /**
6731 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6732 * @ipr_cmd: ipr command struct
6733 *
6734 * This function enables dual IOA RAID support if possible.
6735 *
6736 * Return value:
6737 * IPR_RC_JOB_RETURN
6738 **/
6739 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6740 {
6741 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6742 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6743 struct ipr_mode_page24 *mode_page;
6744 int length;
6745
6746 ENTER;
6747 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6748 sizeof(struct ipr_mode_page24));
6749
6750 if (mode_page)
6751 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6752
6753 length = mode_pages->hdr.length + 1;
6754 mode_pages->hdr.length = 0;
6755
6756 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6757 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6758 length);
6759
6760 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6761 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6762
6763 LEAVE;
6764 return IPR_RC_JOB_RETURN;
6765 }
6766
6767 /**
6768 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6769 * @ipr_cmd: ipr command struct
6770 *
6771 * This function handles the failure of a Mode Sense to the IOAFP.
6772 * Some adapters do not handle all mode pages.
6773 *
6774 * Return value:
6775 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6776 **/
6777 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6778 {
6779 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6780
6781 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6782 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6783 return IPR_RC_JOB_CONTINUE;
6784 }
6785
6786 return ipr_reset_cmd_failed(ipr_cmd);
6787 }
6788
6789 /**
6790 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6791 * @ipr_cmd: ipr command struct
6792 *
6793 * This function send a mode sense to the IOA to retrieve
6794 * the IOA Advanced Function Control mode page.
6795 *
6796 * Return value:
6797 * IPR_RC_JOB_RETURN
6798 **/
6799 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6800 {
6801 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6802
6803 ENTER;
6804 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6805 0x24, ioa_cfg->vpd_cbs_dma +
6806 offsetof(struct ipr_misc_cbs, mode_pages),
6807 sizeof(struct ipr_mode_pages));
6808
6809 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6810 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6811
6812 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6813
6814 LEAVE;
6815 return IPR_RC_JOB_RETURN;
6816 }
6817
6818 /**
6819 * ipr_init_res_table - Initialize the resource table
6820 * @ipr_cmd: ipr command struct
6821 *
6822 * This function looks through the existing resource table, comparing
6823 * it with the config table. This function will take care of old/new
6824 * devices and schedule adding/removing them from the mid-layer
6825 * as appropriate.
6826 *
6827 * Return value:
6828 * IPR_RC_JOB_CONTINUE
6829 **/
6830 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
6831 {
6832 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6833 struct ipr_resource_entry *res, *temp;
6834 struct ipr_config_table_entry_wrapper cfgtew;
6835 int entries, found, flag, i;
6836 LIST_HEAD(old_res);
6837
6838 ENTER;
6839 if (ioa_cfg->sis64)
6840 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
6841 else
6842 flag = ioa_cfg->u.cfg_table->hdr.flags;
6843
6844 if (flag & IPR_UCODE_DOWNLOAD_REQ)
6845 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6846
6847 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6848 list_move_tail(&res->queue, &old_res);
6849
6850 if (ioa_cfg->sis64)
6851 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
6852 else
6853 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
6854
6855 for (i = 0; i < entries; i++) {
6856 if (ioa_cfg->sis64)
6857 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
6858 else
6859 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
6860 found = 0;
6861
6862 list_for_each_entry_safe(res, temp, &old_res, queue) {
6863 if (ipr_is_same_device(res, &cfgtew)) {
6864 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6865 found = 1;
6866 break;
6867 }
6868 }
6869
6870 if (!found) {
6871 if (list_empty(&ioa_cfg->free_res_q)) {
6872 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6873 break;
6874 }
6875
6876 found = 1;
6877 res = list_entry(ioa_cfg->free_res_q.next,
6878 struct ipr_resource_entry, queue);
6879 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6880 ipr_init_res_entry(res, &cfgtew);
6881 res->add_to_ml = 1;
6882 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
6883 res->sdev->allow_restart = 1;
6884
6885 if (found)
6886 ipr_update_res_entry(res, &cfgtew);
6887 }
6888
6889 list_for_each_entry_safe(res, temp, &old_res, queue) {
6890 if (res->sdev) {
6891 res->del_from_ml = 1;
6892 res->res_handle = IPR_INVALID_RES_HANDLE;
6893 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6894 }
6895 }
6896
6897 list_for_each_entry_safe(res, temp, &old_res, queue) {
6898 ipr_clear_res_target(res);
6899 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6900 }
6901
6902 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6903 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6904 else
6905 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6906
6907 LEAVE;
6908 return IPR_RC_JOB_CONTINUE;
6909 }
6910
6911 /**
6912 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6913 * @ipr_cmd: ipr command struct
6914 *
6915 * This function sends a Query IOA Configuration command
6916 * to the adapter to retrieve the IOA configuration table.
6917 *
6918 * Return value:
6919 * IPR_RC_JOB_RETURN
6920 **/
6921 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6922 {
6923 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6924 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6925 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6926 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6927
6928 ENTER;
6929 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6930 ioa_cfg->dual_raid = 1;
6931 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6932 ucode_vpd->major_release, ucode_vpd->card_type,
6933 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6934 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6935 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6936
6937 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6938 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
6939 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
6940 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
6941
6942 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
6943 IPR_IOADL_FLAGS_READ_LAST);
6944
6945 ipr_cmd->job_step = ipr_init_res_table;
6946
6947 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6948
6949 LEAVE;
6950 return IPR_RC_JOB_RETURN;
6951 }
6952
6953 /**
6954 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6955 * @ipr_cmd: ipr command struct
6956 *
6957 * This utility function sends an inquiry to the adapter.
6958 *
6959 * Return value:
6960 * none
6961 **/
6962 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6963 dma_addr_t dma_addr, u8 xfer_len)
6964 {
6965 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6966
6967 ENTER;
6968 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6969 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6970
6971 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6972 ioarcb->cmd_pkt.cdb[1] = flags;
6973 ioarcb->cmd_pkt.cdb[2] = page;
6974 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6975
6976 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6977
6978 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6979 LEAVE;
6980 }
6981
6982 /**
6983 * ipr_inquiry_page_supported - Is the given inquiry page supported
6984 * @page0: inquiry page 0 buffer
6985 * @page: page code.
6986 *
6987 * This function determines if the specified inquiry page is supported.
6988 *
6989 * Return value:
6990 * 1 if page is supported / 0 if not
6991 **/
6992 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6993 {
6994 int i;
6995
6996 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6997 if (page0->page[i] == page)
6998 return 1;
6999
7000 return 0;
7001 }
7002
7003 /**
7004 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7005 * @ipr_cmd: ipr command struct
7006 *
7007 * This function sends a Page 0xD0 inquiry to the adapter
7008 * to retrieve adapter capabilities.
7009 *
7010 * Return value:
7011 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7012 **/
7013 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7014 {
7015 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7016 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7017 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7018
7019 ENTER;
7020 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7021 memset(cap, 0, sizeof(*cap));
7022
7023 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7024 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7025 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7026 sizeof(struct ipr_inquiry_cap));
7027 return IPR_RC_JOB_RETURN;
7028 }
7029
7030 LEAVE;
7031 return IPR_RC_JOB_CONTINUE;
7032 }
7033
7034 /**
7035 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7036 * @ipr_cmd: ipr command struct
7037 *
7038 * This function sends a Page 3 inquiry to the adapter
7039 * to retrieve software VPD information.
7040 *
7041 * Return value:
7042 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7043 **/
7044 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7045 {
7046 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7047
7048 ENTER;
7049
7050 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7051
7052 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7053 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7054 sizeof(struct ipr_inquiry_page3));
7055
7056 LEAVE;
7057 return IPR_RC_JOB_RETURN;
7058 }
7059
7060 /**
7061 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7062 * @ipr_cmd: ipr command struct
7063 *
7064 * This function sends a Page 0 inquiry to the adapter
7065 * to retrieve supported inquiry pages.
7066 *
7067 * Return value:
7068 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7069 **/
7070 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7071 {
7072 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7073 char type[5];
7074
7075 ENTER;
7076
7077 /* Grab the type out of the VPD and store it away */
7078 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7079 type[4] = '\0';
7080 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7081
7082 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7083
7084 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7085 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7086 sizeof(struct ipr_inquiry_page0));
7087
7088 LEAVE;
7089 return IPR_RC_JOB_RETURN;
7090 }
7091
7092 /**
7093 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7094 * @ipr_cmd: ipr command struct
7095 *
7096 * This function sends a standard inquiry to the adapter.
7097 *
7098 * Return value:
7099 * IPR_RC_JOB_RETURN
7100 **/
7101 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7102 {
7103 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7104
7105 ENTER;
7106 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7107
7108 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7109 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7110 sizeof(struct ipr_ioa_vpd));
7111
7112 LEAVE;
7113 return IPR_RC_JOB_RETURN;
7114 }
7115
7116 /**
7117 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7118 * @ipr_cmd: ipr command struct
7119 *
7120 * This function send an Identify Host Request Response Queue
7121 * command to establish the HRRQ with the adapter.
7122 *
7123 * Return value:
7124 * IPR_RC_JOB_RETURN
7125 **/
7126 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7127 {
7128 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7129 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7130
7131 ENTER;
7132 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7133
7134 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7135 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7136
7137 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7138 if (ioa_cfg->sis64)
7139 ioarcb->cmd_pkt.cdb[1] = 0x1;
7140 ioarcb->cmd_pkt.cdb[2] =
7141 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff;
7142 ioarcb->cmd_pkt.cdb[3] =
7143 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff;
7144 ioarcb->cmd_pkt.cdb[4] =
7145 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff;
7146 ioarcb->cmd_pkt.cdb[5] =
7147 ((u64) ioa_cfg->host_rrq_dma) & 0xff;
7148 ioarcb->cmd_pkt.cdb[7] =
7149 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
7150 ioarcb->cmd_pkt.cdb[8] =
7151 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
7152
7153 if (ioa_cfg->sis64) {
7154 ioarcb->cmd_pkt.cdb[10] =
7155 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff;
7156 ioarcb->cmd_pkt.cdb[11] =
7157 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff;
7158 ioarcb->cmd_pkt.cdb[12] =
7159 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff;
7160 ioarcb->cmd_pkt.cdb[13] =
7161 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff;
7162 }
7163
7164 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7165
7166 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7167
7168 LEAVE;
7169 return IPR_RC_JOB_RETURN;
7170 }
7171
7172 /**
7173 * ipr_reset_timer_done - Adapter reset timer function
7174 * @ipr_cmd: ipr command struct
7175 *
7176 * Description: This function is used in adapter reset processing
7177 * for timing events. If the reset_cmd pointer in the IOA
7178 * config struct is not this adapter's we are doing nested
7179 * resets and fail_all_ops will take care of freeing the
7180 * command block.
7181 *
7182 * Return value:
7183 * none
7184 **/
7185 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7186 {
7187 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7188 unsigned long lock_flags = 0;
7189
7190 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7191
7192 if (ioa_cfg->reset_cmd == ipr_cmd) {
7193 list_del(&ipr_cmd->queue);
7194 ipr_cmd->done(ipr_cmd);
7195 }
7196
7197 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7198 }
7199
7200 /**
7201 * ipr_reset_start_timer - Start a timer for adapter reset job
7202 * @ipr_cmd: ipr command struct
7203 * @timeout: timeout value
7204 *
7205 * Description: This function is used in adapter reset processing
7206 * for timing events. If the reset_cmd pointer in the IOA
7207 * config struct is not this adapter's we are doing nested
7208 * resets and fail_all_ops will take care of freeing the
7209 * command block.
7210 *
7211 * Return value:
7212 * none
7213 **/
7214 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7215 unsigned long timeout)
7216 {
7217 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7218 ipr_cmd->done = ipr_reset_ioa_job;
7219
7220 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7221 ipr_cmd->timer.expires = jiffies + timeout;
7222 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7223 add_timer(&ipr_cmd->timer);
7224 }
7225
7226 /**
7227 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7228 * @ioa_cfg: ioa cfg struct
7229 *
7230 * Return value:
7231 * nothing
7232 **/
7233 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7234 {
7235 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
7236
7237 /* Initialize Host RRQ pointers */
7238 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
7239 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
7240 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
7241 ioa_cfg->toggle_bit = 1;
7242
7243 /* Zero out config table */
7244 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7245 }
7246
7247 /**
7248 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7249 * @ipr_cmd: ipr command struct
7250 *
7251 * Return value:
7252 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7253 **/
7254 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7255 {
7256 unsigned long stage, stage_time;
7257 u32 feedback;
7258 volatile u32 int_reg;
7259 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7260 u64 maskval = 0;
7261
7262 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7263 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7264 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7265
7266 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7267
7268 /* sanity check the stage_time value */
7269 if (stage_time == 0)
7270 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7271 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7272 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7273 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7274 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7275
7276 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7277 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7278 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7279 stage_time = ioa_cfg->transop_timeout;
7280 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7281 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7282 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7283 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7284 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7285 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7286 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7287 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7288 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7289 return IPR_RC_JOB_CONTINUE;
7290 }
7291 }
7292
7293 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7294 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7295 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7296 ipr_cmd->done = ipr_reset_ioa_job;
7297 add_timer(&ipr_cmd->timer);
7298 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7299
7300 return IPR_RC_JOB_RETURN;
7301 }
7302
7303 /**
7304 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7305 * @ipr_cmd: ipr command struct
7306 *
7307 * This function reinitializes some control blocks and
7308 * enables destructive diagnostics on the adapter.
7309 *
7310 * Return value:
7311 * IPR_RC_JOB_RETURN
7312 **/
7313 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7314 {
7315 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7316 volatile u32 int_reg;
7317 volatile u64 maskval;
7318
7319 ENTER;
7320 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7321 ipr_init_ioa_mem(ioa_cfg);
7322
7323 ioa_cfg->allow_interrupts = 1;
7324 if (ioa_cfg->sis64) {
7325 /* Set the adapter to the correct endian mode. */
7326 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7327 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7328 }
7329
7330 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7331
7332 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7333 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7334 ioa_cfg->regs.clr_interrupt_mask_reg32);
7335 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7336 return IPR_RC_JOB_CONTINUE;
7337 }
7338
7339 /* Enable destructive diagnostics on IOA */
7340 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7341
7342 if (ioa_cfg->sis64) {
7343 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7344 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7345 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7346 } else
7347 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7348
7349 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7350
7351 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7352
7353 if (ioa_cfg->sis64) {
7354 ipr_cmd->job_step = ipr_reset_next_stage;
7355 return IPR_RC_JOB_CONTINUE;
7356 }
7357
7358 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7359 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7360 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7361 ipr_cmd->done = ipr_reset_ioa_job;
7362 add_timer(&ipr_cmd->timer);
7363 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7364
7365 LEAVE;
7366 return IPR_RC_JOB_RETURN;
7367 }
7368
7369 /**
7370 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7371 * @ipr_cmd: ipr command struct
7372 *
7373 * This function is invoked when an adapter dump has run out
7374 * of processing time.
7375 *
7376 * Return value:
7377 * IPR_RC_JOB_CONTINUE
7378 **/
7379 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7380 {
7381 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7382
7383 if (ioa_cfg->sdt_state == GET_DUMP)
7384 ioa_cfg->sdt_state = ABORT_DUMP;
7385
7386 ipr_cmd->job_step = ipr_reset_alert;
7387
7388 return IPR_RC_JOB_CONTINUE;
7389 }
7390
7391 /**
7392 * ipr_unit_check_no_data - Log a unit check/no data error log
7393 * @ioa_cfg: ioa config struct
7394 *
7395 * Logs an error indicating the adapter unit checked, but for some
7396 * reason, we were unable to fetch the unit check buffer.
7397 *
7398 * Return value:
7399 * nothing
7400 **/
7401 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7402 {
7403 ioa_cfg->errors_logged++;
7404 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7405 }
7406
7407 /**
7408 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7409 * @ioa_cfg: ioa config struct
7410 *
7411 * Fetches the unit check buffer from the adapter by clocking the data
7412 * through the mailbox register.
7413 *
7414 * Return value:
7415 * nothing
7416 **/
7417 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7418 {
7419 unsigned long mailbox;
7420 struct ipr_hostrcb *hostrcb;
7421 struct ipr_uc_sdt sdt;
7422 int rc, length;
7423 u32 ioasc;
7424
7425 mailbox = readl(ioa_cfg->ioa_mailbox);
7426
7427 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
7428 ipr_unit_check_no_data(ioa_cfg);
7429 return;
7430 }
7431
7432 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7433 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7434 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7435
7436 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7437 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7438 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
7439 ipr_unit_check_no_data(ioa_cfg);
7440 return;
7441 }
7442
7443 /* Find length of the first sdt entry (UC buffer) */
7444 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7445 length = be32_to_cpu(sdt.entry[0].end_token);
7446 else
7447 length = (be32_to_cpu(sdt.entry[0].end_token) -
7448 be32_to_cpu(sdt.entry[0].start_token)) &
7449 IPR_FMT2_MBX_ADDR_MASK;
7450
7451 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7452 struct ipr_hostrcb, queue);
7453 list_del(&hostrcb->queue);
7454 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7455
7456 rc = ipr_get_ldump_data_section(ioa_cfg,
7457 be32_to_cpu(sdt.entry[0].start_token),
7458 (__be32 *)&hostrcb->hcam,
7459 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7460
7461 if (!rc) {
7462 ipr_handle_log_data(ioa_cfg, hostrcb);
7463 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
7464 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7465 ioa_cfg->sdt_state == GET_DUMP)
7466 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7467 } else
7468 ipr_unit_check_no_data(ioa_cfg);
7469
7470 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7471 }
7472
7473 /**
7474 * ipr_reset_restore_cfg_space - Restore PCI config space.
7475 * @ipr_cmd: ipr command struct
7476 *
7477 * Description: This function restores the saved PCI config space of
7478 * the adapter, fails all outstanding ops back to the callers, and
7479 * fetches the dump/unit check if applicable to this reset.
7480 *
7481 * Return value:
7482 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7483 **/
7484 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7485 {
7486 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7487 volatile u32 int_reg;
7488 int rc;
7489
7490 ENTER;
7491 ioa_cfg->pdev->state_saved = true;
7492 rc = pci_restore_state(ioa_cfg->pdev);
7493
7494 if (rc != PCIBIOS_SUCCESSFUL) {
7495 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7496 return IPR_RC_JOB_CONTINUE;
7497 }
7498
7499 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
7500 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7501 return IPR_RC_JOB_CONTINUE;
7502 }
7503
7504 ipr_fail_all_ops(ioa_cfg);
7505
7506 if (ioa_cfg->sis64) {
7507 /* Set the adapter to the correct endian mode. */
7508 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7509 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7510 }
7511
7512 if (ioa_cfg->ioa_unit_checked) {
7513 ioa_cfg->ioa_unit_checked = 0;
7514 ipr_get_unit_check_buffer(ioa_cfg);
7515 ipr_cmd->job_step = ipr_reset_alert;
7516 ipr_reset_start_timer(ipr_cmd, 0);
7517 return IPR_RC_JOB_RETURN;
7518 }
7519
7520 if (ioa_cfg->in_ioa_bringdown) {
7521 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7522 } else {
7523 ipr_cmd->job_step = ipr_reset_enable_ioa;
7524
7525 if (GET_DUMP == ioa_cfg->sdt_state) {
7526 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
7527 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7528 schedule_work(&ioa_cfg->work_q);
7529 return IPR_RC_JOB_RETURN;
7530 }
7531 }
7532
7533 LEAVE;
7534 return IPR_RC_JOB_CONTINUE;
7535 }
7536
7537 /**
7538 * ipr_reset_bist_done - BIST has completed on the adapter.
7539 * @ipr_cmd: ipr command struct
7540 *
7541 * Description: Unblock config space and resume the reset process.
7542 *
7543 * Return value:
7544 * IPR_RC_JOB_CONTINUE
7545 **/
7546 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7547 {
7548 ENTER;
7549 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7550 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7551 LEAVE;
7552 return IPR_RC_JOB_CONTINUE;
7553 }
7554
7555 /**
7556 * ipr_reset_start_bist - Run BIST on the adapter.
7557 * @ipr_cmd: ipr command struct
7558 *
7559 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7560 *
7561 * Return value:
7562 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7563 **/
7564 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7565 {
7566 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7567 int rc = PCIBIOS_SUCCESSFUL;
7568
7569 ENTER;
7570 pci_block_user_cfg_access(ioa_cfg->pdev);
7571
7572 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
7573 writel(IPR_UPROCI_SIS64_START_BIST,
7574 ioa_cfg->regs.set_uproc_interrupt_reg32);
7575 else
7576 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7577
7578 if (rc == PCIBIOS_SUCCESSFUL) {
7579 ipr_cmd->job_step = ipr_reset_bist_done;
7580 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7581 rc = IPR_RC_JOB_RETURN;
7582 } else {
7583 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7584 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7585 rc = IPR_RC_JOB_CONTINUE;
7586 }
7587
7588 LEAVE;
7589 return rc;
7590 }
7591
7592 /**
7593 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7594 * @ipr_cmd: ipr command struct
7595 *
7596 * Description: This clears PCI reset to the adapter and delays two seconds.
7597 *
7598 * Return value:
7599 * IPR_RC_JOB_RETURN
7600 **/
7601 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7602 {
7603 ENTER;
7604 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
7605 ipr_cmd->job_step = ipr_reset_bist_done;
7606 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7607 LEAVE;
7608 return IPR_RC_JOB_RETURN;
7609 }
7610
7611 /**
7612 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
7613 * @ipr_cmd: ipr command struct
7614 *
7615 * Description: This asserts PCI reset to the adapter.
7616 *
7617 * Return value:
7618 * IPR_RC_JOB_RETURN
7619 **/
7620 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
7621 {
7622 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7623 struct pci_dev *pdev = ioa_cfg->pdev;
7624
7625 ENTER;
7626 pci_block_user_cfg_access(pdev);
7627 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7628 ipr_cmd->job_step = ipr_reset_slot_reset_done;
7629 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
7630 LEAVE;
7631 return IPR_RC_JOB_RETURN;
7632 }
7633
7634 /**
7635 * ipr_reset_allowed - Query whether or not IOA can be reset
7636 * @ioa_cfg: ioa config struct
7637 *
7638 * Return value:
7639 * 0 if reset not allowed / non-zero if reset is allowed
7640 **/
7641 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
7642 {
7643 volatile u32 temp_reg;
7644
7645 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7646 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
7647 }
7648
7649 /**
7650 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
7651 * @ipr_cmd: ipr command struct
7652 *
7653 * Description: This function waits for adapter permission to run BIST,
7654 * then runs BIST. If the adapter does not give permission after a
7655 * reasonable time, we will reset the adapter anyway. The impact of
7656 * resetting the adapter without warning the adapter is the risk of
7657 * losing the persistent error log on the adapter. If the adapter is
7658 * reset while it is writing to the flash on the adapter, the flash
7659 * segment will have bad ECC and be zeroed.
7660 *
7661 * Return value:
7662 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7663 **/
7664 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
7665 {
7666 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7667 int rc = IPR_RC_JOB_RETURN;
7668
7669 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
7670 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7671 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7672 } else {
7673 ipr_cmd->job_step = ioa_cfg->reset;
7674 rc = IPR_RC_JOB_CONTINUE;
7675 }
7676
7677 return rc;
7678 }
7679
7680 /**
7681 * ipr_reset_alert - Alert the adapter of a pending reset
7682 * @ipr_cmd: ipr command struct
7683 *
7684 * Description: This function alerts the adapter that it will be reset.
7685 * If memory space is not currently enabled, proceed directly
7686 * to running BIST on the adapter. The timer must always be started
7687 * so we guarantee we do not run BIST from ipr_isr.
7688 *
7689 * Return value:
7690 * IPR_RC_JOB_RETURN
7691 **/
7692 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
7693 {
7694 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7695 u16 cmd_reg;
7696 int rc;
7697
7698 ENTER;
7699 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
7700
7701 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
7702 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
7703 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
7704 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
7705 } else {
7706 ipr_cmd->job_step = ioa_cfg->reset;
7707 }
7708
7709 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7710 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7711
7712 LEAVE;
7713 return IPR_RC_JOB_RETURN;
7714 }
7715
7716 /**
7717 * ipr_reset_ucode_download_done - Microcode download completion
7718 * @ipr_cmd: ipr command struct
7719 *
7720 * Description: This function unmaps the microcode download buffer.
7721 *
7722 * Return value:
7723 * IPR_RC_JOB_CONTINUE
7724 **/
7725 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
7726 {
7727 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7728 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7729
7730 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
7731 sglist->num_sg, DMA_TO_DEVICE);
7732
7733 ipr_cmd->job_step = ipr_reset_alert;
7734 return IPR_RC_JOB_CONTINUE;
7735 }
7736
7737 /**
7738 * ipr_reset_ucode_download - Download microcode to the adapter
7739 * @ipr_cmd: ipr command struct
7740 *
7741 * Description: This function checks to see if it there is microcode
7742 * to download to the adapter. If there is, a download is performed.
7743 *
7744 * Return value:
7745 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7746 **/
7747 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
7748 {
7749 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7750 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7751
7752 ENTER;
7753 ipr_cmd->job_step = ipr_reset_alert;
7754
7755 if (!sglist)
7756 return IPR_RC_JOB_CONTINUE;
7757
7758 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7759 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7760 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
7761 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
7762 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
7763 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
7764 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
7765
7766 if (ioa_cfg->sis64)
7767 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
7768 else
7769 ipr_build_ucode_ioadl(ipr_cmd, sglist);
7770 ipr_cmd->job_step = ipr_reset_ucode_download_done;
7771
7772 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7773 IPR_WRITE_BUFFER_TIMEOUT);
7774
7775 LEAVE;
7776 return IPR_RC_JOB_RETURN;
7777 }
7778
7779 /**
7780 * ipr_reset_shutdown_ioa - Shutdown the adapter
7781 * @ipr_cmd: ipr command struct
7782 *
7783 * Description: This function issues an adapter shutdown of the
7784 * specified type to the specified adapter as part of the
7785 * adapter reset job.
7786 *
7787 * Return value:
7788 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7789 **/
7790 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
7791 {
7792 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7793 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
7794 unsigned long timeout;
7795 int rc = IPR_RC_JOB_CONTINUE;
7796
7797 ENTER;
7798 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
7799 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7800 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7801 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
7802 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
7803
7804 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
7805 timeout = IPR_SHUTDOWN_TIMEOUT;
7806 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
7807 timeout = IPR_INTERNAL_TIMEOUT;
7808 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7809 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
7810 else
7811 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
7812
7813 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
7814
7815 rc = IPR_RC_JOB_RETURN;
7816 ipr_cmd->job_step = ipr_reset_ucode_download;
7817 } else
7818 ipr_cmd->job_step = ipr_reset_alert;
7819
7820 LEAVE;
7821 return rc;
7822 }
7823
7824 /**
7825 * ipr_reset_ioa_job - Adapter reset job
7826 * @ipr_cmd: ipr command struct
7827 *
7828 * Description: This function is the job router for the adapter reset job.
7829 *
7830 * Return value:
7831 * none
7832 **/
7833 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
7834 {
7835 u32 rc, ioasc;
7836 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7837
7838 do {
7839 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7840
7841 if (ioa_cfg->reset_cmd != ipr_cmd) {
7842 /*
7843 * We are doing nested adapter resets and this is
7844 * not the current reset job.
7845 */
7846 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7847 return;
7848 }
7849
7850 if (IPR_IOASC_SENSE_KEY(ioasc)) {
7851 rc = ipr_cmd->job_step_failed(ipr_cmd);
7852 if (rc == IPR_RC_JOB_RETURN)
7853 return;
7854 }
7855
7856 ipr_reinit_ipr_cmnd(ipr_cmd);
7857 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
7858 rc = ipr_cmd->job_step(ipr_cmd);
7859 } while(rc == IPR_RC_JOB_CONTINUE);
7860 }
7861
7862 /**
7863 * _ipr_initiate_ioa_reset - Initiate an adapter reset
7864 * @ioa_cfg: ioa config struct
7865 * @job_step: first job step of reset job
7866 * @shutdown_type: shutdown type
7867 *
7868 * Description: This function will initiate the reset of the given adapter
7869 * starting at the selected job step.
7870 * If the caller needs to wait on the completion of the reset,
7871 * the caller must sleep on the reset_wait_q.
7872 *
7873 * Return value:
7874 * none
7875 **/
7876 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7877 int (*job_step) (struct ipr_cmnd *),
7878 enum ipr_shutdown_type shutdown_type)
7879 {
7880 struct ipr_cmnd *ipr_cmd;
7881
7882 ioa_cfg->in_reset_reload = 1;
7883 ioa_cfg->allow_cmds = 0;
7884 scsi_block_requests(ioa_cfg->host);
7885
7886 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
7887 ioa_cfg->reset_cmd = ipr_cmd;
7888 ipr_cmd->job_step = job_step;
7889 ipr_cmd->u.shutdown_type = shutdown_type;
7890
7891 ipr_reset_ioa_job(ipr_cmd);
7892 }
7893
7894 /**
7895 * ipr_initiate_ioa_reset - Initiate an adapter reset
7896 * @ioa_cfg: ioa config struct
7897 * @shutdown_type: shutdown type
7898 *
7899 * Description: This function will initiate the reset of the given adapter.
7900 * If the caller needs to wait on the completion of the reset,
7901 * the caller must sleep on the reset_wait_q.
7902 *
7903 * Return value:
7904 * none
7905 **/
7906 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7907 enum ipr_shutdown_type shutdown_type)
7908 {
7909 if (ioa_cfg->ioa_is_dead)
7910 return;
7911
7912 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
7913 ioa_cfg->sdt_state = ABORT_DUMP;
7914
7915 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
7916 dev_err(&ioa_cfg->pdev->dev,
7917 "IOA taken offline - error recovery failed\n");
7918
7919 ioa_cfg->reset_retries = 0;
7920 ioa_cfg->ioa_is_dead = 1;
7921
7922 if (ioa_cfg->in_ioa_bringdown) {
7923 ioa_cfg->reset_cmd = NULL;
7924 ioa_cfg->in_reset_reload = 0;
7925 ipr_fail_all_ops(ioa_cfg);
7926 wake_up_all(&ioa_cfg->reset_wait_q);
7927
7928 spin_unlock_irq(ioa_cfg->host->host_lock);
7929 scsi_unblock_requests(ioa_cfg->host);
7930 spin_lock_irq(ioa_cfg->host->host_lock);
7931 return;
7932 } else {
7933 ioa_cfg->in_ioa_bringdown = 1;
7934 shutdown_type = IPR_SHUTDOWN_NONE;
7935 }
7936 }
7937
7938 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
7939 shutdown_type);
7940 }
7941
7942 /**
7943 * ipr_reset_freeze - Hold off all I/O activity
7944 * @ipr_cmd: ipr command struct
7945 *
7946 * Description: If the PCI slot is frozen, hold off all I/O
7947 * activity; then, as soon as the slot is available again,
7948 * initiate an adapter reset.
7949 */
7950 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
7951 {
7952 /* Disallow new interrupts, avoid loop */
7953 ipr_cmd->ioa_cfg->allow_interrupts = 0;
7954 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7955 ipr_cmd->done = ipr_reset_ioa_job;
7956 return IPR_RC_JOB_RETURN;
7957 }
7958
7959 /**
7960 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
7961 * @pdev: PCI device struct
7962 *
7963 * Description: This routine is called to tell us that the PCI bus
7964 * is down. Can't do anything here, except put the device driver
7965 * into a holding pattern, waiting for the PCI bus to come back.
7966 */
7967 static void ipr_pci_frozen(struct pci_dev *pdev)
7968 {
7969 unsigned long flags = 0;
7970 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7971
7972 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7973 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
7974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7975 }
7976
7977 /**
7978 * ipr_pci_slot_reset - Called when PCI slot has been reset.
7979 * @pdev: PCI device struct
7980 *
7981 * Description: This routine is called by the pci error recovery
7982 * code after the PCI slot has been reset, just before we
7983 * should resume normal operations.
7984 */
7985 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
7986 {
7987 unsigned long flags = 0;
7988 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7989
7990 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7991 if (ioa_cfg->needs_warm_reset)
7992 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7993 else
7994 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
7995 IPR_SHUTDOWN_NONE);
7996 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7997 return PCI_ERS_RESULT_RECOVERED;
7998 }
7999
8000 /**
8001 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
8002 * @pdev: PCI device struct
8003 *
8004 * Description: This routine is called when the PCI bus has
8005 * permanently failed.
8006 */
8007 static void ipr_pci_perm_failure(struct pci_dev *pdev)
8008 {
8009 unsigned long flags = 0;
8010 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8011
8012 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8013 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8014 ioa_cfg->sdt_state = ABORT_DUMP;
8015 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
8016 ioa_cfg->in_ioa_bringdown = 1;
8017 ioa_cfg->allow_cmds = 0;
8018 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8019 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8020 }
8021
8022 /**
8023 * ipr_pci_error_detected - Called when a PCI error is detected.
8024 * @pdev: PCI device struct
8025 * @state: PCI channel state
8026 *
8027 * Description: Called when a PCI error is detected.
8028 *
8029 * Return value:
8030 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8031 */
8032 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8033 pci_channel_state_t state)
8034 {
8035 switch (state) {
8036 case pci_channel_io_frozen:
8037 ipr_pci_frozen(pdev);
8038 return PCI_ERS_RESULT_NEED_RESET;
8039 case pci_channel_io_perm_failure:
8040 ipr_pci_perm_failure(pdev);
8041 return PCI_ERS_RESULT_DISCONNECT;
8042 break;
8043 default:
8044 break;
8045 }
8046 return PCI_ERS_RESULT_NEED_RESET;
8047 }
8048
8049 /**
8050 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8051 * @ioa_cfg: ioa cfg struct
8052 *
8053 * Description: This is the second phase of adapter intialization
8054 * This function takes care of initilizing the adapter to the point
8055 * where it can accept new commands.
8056
8057 * Return value:
8058 * 0 on success / -EIO on failure
8059 **/
8060 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8061 {
8062 int rc = 0;
8063 unsigned long host_lock_flags = 0;
8064
8065 ENTER;
8066 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8067 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
8068 if (ioa_cfg->needs_hard_reset) {
8069 ioa_cfg->needs_hard_reset = 0;
8070 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8071 } else
8072 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8073 IPR_SHUTDOWN_NONE);
8074
8075 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8076 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8077 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8078
8079 if (ioa_cfg->ioa_is_dead) {
8080 rc = -EIO;
8081 } else if (ipr_invalid_adapter(ioa_cfg)) {
8082 if (!ipr_testmode)
8083 rc = -EIO;
8084
8085 dev_err(&ioa_cfg->pdev->dev,
8086 "Adapter not supported in this hardware configuration.\n");
8087 }
8088
8089 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8090
8091 LEAVE;
8092 return rc;
8093 }
8094
8095 /**
8096 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8097 * @ioa_cfg: ioa config struct
8098 *
8099 * Return value:
8100 * none
8101 **/
8102 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8103 {
8104 int i;
8105
8106 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8107 if (ioa_cfg->ipr_cmnd_list[i])
8108 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8109 ioa_cfg->ipr_cmnd_list[i],
8110 ioa_cfg->ipr_cmnd_list_dma[i]);
8111
8112 ioa_cfg->ipr_cmnd_list[i] = NULL;
8113 }
8114
8115 if (ioa_cfg->ipr_cmd_pool)
8116 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
8117
8118 ioa_cfg->ipr_cmd_pool = NULL;
8119 }
8120
8121 /**
8122 * ipr_free_mem - Frees memory allocated for an adapter
8123 * @ioa_cfg: ioa cfg struct
8124 *
8125 * Return value:
8126 * nothing
8127 **/
8128 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8129 {
8130 int i;
8131
8132 kfree(ioa_cfg->res_entries);
8133 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8134 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8135 ipr_free_cmd_blks(ioa_cfg);
8136 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8137 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8138 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8139 ioa_cfg->u.cfg_table,
8140 ioa_cfg->cfg_table_dma);
8141
8142 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8143 pci_free_consistent(ioa_cfg->pdev,
8144 sizeof(struct ipr_hostrcb),
8145 ioa_cfg->hostrcb[i],
8146 ioa_cfg->hostrcb_dma[i]);
8147 }
8148
8149 ipr_free_dump(ioa_cfg);
8150 kfree(ioa_cfg->trace);
8151 }
8152
8153 /**
8154 * ipr_free_all_resources - Free all allocated resources for an adapter.
8155 * @ipr_cmd: ipr command struct
8156 *
8157 * This function frees all allocated resources for the
8158 * specified adapter.
8159 *
8160 * Return value:
8161 * none
8162 **/
8163 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8164 {
8165 struct pci_dev *pdev = ioa_cfg->pdev;
8166
8167 ENTER;
8168 free_irq(pdev->irq, ioa_cfg);
8169 pci_disable_msi(pdev);
8170 iounmap(ioa_cfg->hdw_dma_regs);
8171 pci_release_regions(pdev);
8172 ipr_free_mem(ioa_cfg);
8173 scsi_host_put(ioa_cfg->host);
8174 pci_disable_device(pdev);
8175 LEAVE;
8176 }
8177
8178 /**
8179 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8180 * @ioa_cfg: ioa config struct
8181 *
8182 * Return value:
8183 * 0 on success / -ENOMEM on allocation failure
8184 **/
8185 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8186 {
8187 struct ipr_cmnd *ipr_cmd;
8188 struct ipr_ioarcb *ioarcb;
8189 dma_addr_t dma_addr;
8190 int i;
8191
8192 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
8193 sizeof(struct ipr_cmnd), 16, 0);
8194
8195 if (!ioa_cfg->ipr_cmd_pool)
8196 return -ENOMEM;
8197
8198 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8199 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
8200
8201 if (!ipr_cmd) {
8202 ipr_free_cmd_blks(ioa_cfg);
8203 return -ENOMEM;
8204 }
8205
8206 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8207 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8208 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8209
8210 ioarcb = &ipr_cmd->ioarcb;
8211 ipr_cmd->dma_addr = dma_addr;
8212 if (ioa_cfg->sis64)
8213 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8214 else
8215 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8216
8217 ioarcb->host_response_handle = cpu_to_be32(i << 2);
8218 if (ioa_cfg->sis64) {
8219 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8220 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8221 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
8222 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
8223 } else {
8224 ioarcb->write_ioadl_addr =
8225 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8226 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8227 ioarcb->ioasa_host_pci_addr =
8228 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
8229 }
8230 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8231 ipr_cmd->cmd_index = i;
8232 ipr_cmd->ioa_cfg = ioa_cfg;
8233 ipr_cmd->sense_buffer_dma = dma_addr +
8234 offsetof(struct ipr_cmnd, sense_buffer);
8235
8236 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8237 }
8238
8239 return 0;
8240 }
8241
8242 /**
8243 * ipr_alloc_mem - Allocate memory for an adapter
8244 * @ioa_cfg: ioa config struct
8245 *
8246 * Return value:
8247 * 0 on success / non-zero for error
8248 **/
8249 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8250 {
8251 struct pci_dev *pdev = ioa_cfg->pdev;
8252 int i, rc = -ENOMEM;
8253
8254 ENTER;
8255 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
8256 ioa_cfg->max_devs_supported, GFP_KERNEL);
8257
8258 if (!ioa_cfg->res_entries)
8259 goto out;
8260
8261 if (ioa_cfg->sis64) {
8262 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8263 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8264 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8265 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8266 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8267 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8268 }
8269
8270 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
8271 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
8272 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8273 }
8274
8275 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8276 sizeof(struct ipr_misc_cbs),
8277 &ioa_cfg->vpd_cbs_dma);
8278
8279 if (!ioa_cfg->vpd_cbs)
8280 goto out_free_res_entries;
8281
8282 if (ipr_alloc_cmd_blks(ioa_cfg))
8283 goto out_free_vpd_cbs;
8284
8285 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
8286 sizeof(u32) * IPR_NUM_CMD_BLKS,
8287 &ioa_cfg->host_rrq_dma);
8288
8289 if (!ioa_cfg->host_rrq)
8290 goto out_ipr_free_cmd_blocks;
8291
8292 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
8293 ioa_cfg->cfg_table_size,
8294 &ioa_cfg->cfg_table_dma);
8295
8296 if (!ioa_cfg->u.cfg_table)
8297 goto out_free_host_rrq;
8298
8299 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8300 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
8301 sizeof(struct ipr_hostrcb),
8302 &ioa_cfg->hostrcb_dma[i]);
8303
8304 if (!ioa_cfg->hostrcb[i])
8305 goto out_free_hostrcb_dma;
8306
8307 ioa_cfg->hostrcb[i]->hostrcb_dma =
8308 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
8309 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
8310 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
8311 }
8312
8313 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
8314 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
8315
8316 if (!ioa_cfg->trace)
8317 goto out_free_hostrcb_dma;
8318
8319 rc = 0;
8320 out:
8321 LEAVE;
8322 return rc;
8323
8324 out_free_hostrcb_dma:
8325 while (i-- > 0) {
8326 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
8327 ioa_cfg->hostrcb[i],
8328 ioa_cfg->hostrcb_dma[i]);
8329 }
8330 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
8331 ioa_cfg->u.cfg_table,
8332 ioa_cfg->cfg_table_dma);
8333 out_free_host_rrq:
8334 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8335 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8336 out_ipr_free_cmd_blocks:
8337 ipr_free_cmd_blks(ioa_cfg);
8338 out_free_vpd_cbs:
8339 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
8340 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8341 out_free_res_entries:
8342 kfree(ioa_cfg->res_entries);
8343 goto out;
8344 }
8345
8346 /**
8347 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
8348 * @ioa_cfg: ioa config struct
8349 *
8350 * Return value:
8351 * none
8352 **/
8353 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
8354 {
8355 int i;
8356
8357 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
8358 ioa_cfg->bus_attr[i].bus = i;
8359 ioa_cfg->bus_attr[i].qas_enabled = 0;
8360 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
8361 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
8362 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
8363 else
8364 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
8365 }
8366 }
8367
8368 /**
8369 * ipr_init_ioa_cfg - Initialize IOA config struct
8370 * @ioa_cfg: ioa config struct
8371 * @host: scsi host struct
8372 * @pdev: PCI dev struct
8373 *
8374 * Return value:
8375 * none
8376 **/
8377 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
8378 struct Scsi_Host *host, struct pci_dev *pdev)
8379 {
8380 const struct ipr_interrupt_offsets *p;
8381 struct ipr_interrupts *t;
8382 void __iomem *base;
8383
8384 ioa_cfg->host = host;
8385 ioa_cfg->pdev = pdev;
8386 ioa_cfg->log_level = ipr_log_level;
8387 ioa_cfg->doorbell = IPR_DOORBELL;
8388 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
8389 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
8390 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
8391 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
8392 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
8393 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
8394 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
8395 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
8396
8397 INIT_LIST_HEAD(&ioa_cfg->free_q);
8398 INIT_LIST_HEAD(&ioa_cfg->pending_q);
8399 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
8400 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
8401 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
8402 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
8403 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
8404 init_waitqueue_head(&ioa_cfg->reset_wait_q);
8405 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8406 ioa_cfg->sdt_state = INACTIVE;
8407
8408 ipr_initialize_bus_attr(ioa_cfg);
8409 ioa_cfg->max_devs_supported = ipr_max_devs;
8410
8411 if (ioa_cfg->sis64) {
8412 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
8413 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
8414 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
8415 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
8416 } else {
8417 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
8418 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
8419 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
8420 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
8421 }
8422 host->max_channel = IPR_MAX_BUS_TO_SCAN;
8423 host->unique_id = host->host_no;
8424 host->max_cmd_len = IPR_MAX_CDB_LEN;
8425 pci_set_drvdata(pdev, ioa_cfg);
8426
8427 p = &ioa_cfg->chip_cfg->regs;
8428 t = &ioa_cfg->regs;
8429 base = ioa_cfg->hdw_dma_regs;
8430
8431 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
8432 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
8433 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
8434 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
8435 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
8436 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
8437 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
8438 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
8439 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
8440 t->ioarrin_reg = base + p->ioarrin_reg;
8441 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
8442 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
8443 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
8444 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
8445 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
8446 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
8447
8448 if (ioa_cfg->sis64) {
8449 t->init_feedback_reg = base + p->init_feedback_reg;
8450 t->dump_addr_reg = base + p->dump_addr_reg;
8451 t->dump_data_reg = base + p->dump_data_reg;
8452 t->endian_swap_reg = base + p->endian_swap_reg;
8453 }
8454 }
8455
8456 /**
8457 * ipr_get_chip_info - Find adapter chip information
8458 * @dev_id: PCI device id struct
8459 *
8460 * Return value:
8461 * ptr to chip information on success / NULL on failure
8462 **/
8463 static const struct ipr_chip_t * __devinit
8464 ipr_get_chip_info(const struct pci_device_id *dev_id)
8465 {
8466 int i;
8467
8468 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
8469 if (ipr_chip[i].vendor == dev_id->vendor &&
8470 ipr_chip[i].device == dev_id->device)
8471 return &ipr_chip[i];
8472 return NULL;
8473 }
8474
8475 /**
8476 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
8477 * @pdev: PCI device struct
8478 *
8479 * Description: Simply set the msi_received flag to 1 indicating that
8480 * Message Signaled Interrupts are supported.
8481 *
8482 * Return value:
8483 * 0 on success / non-zero on failure
8484 **/
8485 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
8486 {
8487 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
8488 unsigned long lock_flags = 0;
8489 irqreturn_t rc = IRQ_HANDLED;
8490
8491 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8492
8493 ioa_cfg->msi_received = 1;
8494 wake_up(&ioa_cfg->msi_wait_q);
8495
8496 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8497 return rc;
8498 }
8499
8500 /**
8501 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
8502 * @pdev: PCI device struct
8503 *
8504 * Description: The return value from pci_enable_msi() can not always be
8505 * trusted. This routine sets up and initiates a test interrupt to determine
8506 * if the interrupt is received via the ipr_test_intr() service routine.
8507 * If the tests fails, the driver will fall back to LSI.
8508 *
8509 * Return value:
8510 * 0 on success / non-zero on failure
8511 **/
8512 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
8513 struct pci_dev *pdev)
8514 {
8515 int rc;
8516 volatile u32 int_reg;
8517 unsigned long lock_flags = 0;
8518
8519 ENTER;
8520
8521 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8522 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8523 ioa_cfg->msi_received = 0;
8524 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8525 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
8526 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8527 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8528
8529 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
8530 if (rc) {
8531 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
8532 return rc;
8533 } else if (ipr_debug)
8534 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
8535
8536 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
8537 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8538 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
8539 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8540
8541 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8542 if (!ioa_cfg->msi_received) {
8543 /* MSI test failed */
8544 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
8545 rc = -EOPNOTSUPP;
8546 } else if (ipr_debug)
8547 dev_info(&pdev->dev, "MSI test succeeded.\n");
8548
8549 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8550
8551 free_irq(pdev->irq, ioa_cfg);
8552
8553 LEAVE;
8554
8555 return rc;
8556 }
8557
8558 /**
8559 * ipr_probe_ioa - Allocates memory and does first stage of initialization
8560 * @pdev: PCI device struct
8561 * @dev_id: PCI device id struct
8562 *
8563 * Return value:
8564 * 0 on success / non-zero on failure
8565 **/
8566 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
8567 const struct pci_device_id *dev_id)
8568 {
8569 struct ipr_ioa_cfg *ioa_cfg;
8570 struct Scsi_Host *host;
8571 unsigned long ipr_regs_pci;
8572 void __iomem *ipr_regs;
8573 int rc = PCIBIOS_SUCCESSFUL;
8574 volatile u32 mask, uproc, interrupts;
8575
8576 ENTER;
8577
8578 if ((rc = pci_enable_device(pdev))) {
8579 dev_err(&pdev->dev, "Cannot enable adapter\n");
8580 goto out;
8581 }
8582
8583 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
8584
8585 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
8586
8587 if (!host) {
8588 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
8589 rc = -ENOMEM;
8590 goto out_disable;
8591 }
8592
8593 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
8594 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
8595 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
8596 sata_port_info.flags, &ipr_sata_ops);
8597
8598 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
8599
8600 if (!ioa_cfg->ipr_chip) {
8601 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
8602 dev_id->vendor, dev_id->device);
8603 goto out_scsi_host_put;
8604 }
8605
8606 /* set SIS 32 or SIS 64 */
8607 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
8608 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
8609
8610 if (ipr_transop_timeout)
8611 ioa_cfg->transop_timeout = ipr_transop_timeout;
8612 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
8613 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
8614 else
8615 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
8616
8617 ioa_cfg->revid = pdev->revision;
8618
8619 ipr_regs_pci = pci_resource_start(pdev, 0);
8620
8621 rc = pci_request_regions(pdev, IPR_NAME);
8622 if (rc < 0) {
8623 dev_err(&pdev->dev,
8624 "Couldn't register memory range of registers\n");
8625 goto out_scsi_host_put;
8626 }
8627
8628 ipr_regs = pci_ioremap_bar(pdev, 0);
8629
8630 if (!ipr_regs) {
8631 dev_err(&pdev->dev,
8632 "Couldn't map memory range of registers\n");
8633 rc = -ENOMEM;
8634 goto out_release_regions;
8635 }
8636
8637 ioa_cfg->hdw_dma_regs = ipr_regs;
8638 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
8639 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
8640
8641 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
8642
8643 pci_set_master(pdev);
8644
8645 if (ioa_cfg->sis64) {
8646 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8647 if (rc < 0) {
8648 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
8649 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8650 }
8651
8652 } else
8653 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8654
8655 if (rc < 0) {
8656 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
8657 goto cleanup_nomem;
8658 }
8659
8660 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
8661 ioa_cfg->chip_cfg->cache_line_size);
8662
8663 if (rc != PCIBIOS_SUCCESSFUL) {
8664 dev_err(&pdev->dev, "Write of cache line size failed\n");
8665 rc = -EIO;
8666 goto cleanup_nomem;
8667 }
8668
8669 /* Enable MSI style interrupts if they are supported. */
8670 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
8671 rc = ipr_test_msi(ioa_cfg, pdev);
8672 if (rc == -EOPNOTSUPP)
8673 pci_disable_msi(pdev);
8674 else if (rc)
8675 goto out_msi_disable;
8676 else
8677 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
8678 } else if (ipr_debug)
8679 dev_info(&pdev->dev, "Cannot enable MSI.\n");
8680
8681 /* Save away PCI config space for use following IOA reset */
8682 rc = pci_save_state(pdev);
8683
8684 if (rc != PCIBIOS_SUCCESSFUL) {
8685 dev_err(&pdev->dev, "Failed to save PCI config space\n");
8686 rc = -EIO;
8687 goto cleanup_nomem;
8688 }
8689
8690 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
8691 goto cleanup_nomem;
8692
8693 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
8694 goto cleanup_nomem;
8695
8696 if (ioa_cfg->sis64)
8697 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
8698 + ((sizeof(struct ipr_config_table_entry64)
8699 * ioa_cfg->max_devs_supported)));
8700 else
8701 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
8702 + ((sizeof(struct ipr_config_table_entry)
8703 * ioa_cfg->max_devs_supported)));
8704
8705 rc = ipr_alloc_mem(ioa_cfg);
8706 if (rc < 0) {
8707 dev_err(&pdev->dev,
8708 "Couldn't allocate enough memory for device driver!\n");
8709 goto cleanup_nomem;
8710 }
8711
8712 /*
8713 * If HRRQ updated interrupt is not masked, or reset alert is set,
8714 * the card is in an unknown state and needs a hard reset
8715 */
8716 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
8717 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
8718 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
8719 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
8720 ioa_cfg->needs_hard_reset = 1;
8721 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
8722 ioa_cfg->needs_hard_reset = 1;
8723 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
8724 ioa_cfg->ioa_unit_checked = 1;
8725
8726 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8727 rc = request_irq(pdev->irq, ipr_isr,
8728 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
8729 IPR_NAME, ioa_cfg);
8730
8731 if (rc) {
8732 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
8733 pdev->irq, rc);
8734 goto cleanup_nolog;
8735 }
8736
8737 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
8738 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
8739 ioa_cfg->needs_warm_reset = 1;
8740 ioa_cfg->reset = ipr_reset_slot_reset;
8741 } else
8742 ioa_cfg->reset = ipr_reset_start_bist;
8743
8744 spin_lock(&ipr_driver_lock);
8745 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
8746 spin_unlock(&ipr_driver_lock);
8747
8748 LEAVE;
8749 out:
8750 return rc;
8751
8752 cleanup_nolog:
8753 ipr_free_mem(ioa_cfg);
8754 cleanup_nomem:
8755 iounmap(ipr_regs);
8756 out_msi_disable:
8757 pci_disable_msi(pdev);
8758 out_release_regions:
8759 pci_release_regions(pdev);
8760 out_scsi_host_put:
8761 scsi_host_put(host);
8762 out_disable:
8763 pci_disable_device(pdev);
8764 goto out;
8765 }
8766
8767 /**
8768 * ipr_scan_vsets - Scans for VSET devices
8769 * @ioa_cfg: ioa config struct
8770 *
8771 * Description: Since the VSET resources do not follow SAM in that we can have
8772 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
8773 *
8774 * Return value:
8775 * none
8776 **/
8777 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
8778 {
8779 int target, lun;
8780
8781 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
8782 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
8783 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
8784 }
8785
8786 /**
8787 * ipr_initiate_ioa_bringdown - Bring down an adapter
8788 * @ioa_cfg: ioa config struct
8789 * @shutdown_type: shutdown type
8790 *
8791 * Description: This function will initiate bringing down the adapter.
8792 * This consists of issuing an IOA shutdown to the adapter
8793 * to flush the cache, and running BIST.
8794 * If the caller needs to wait on the completion of the reset,
8795 * the caller must sleep on the reset_wait_q.
8796 *
8797 * Return value:
8798 * none
8799 **/
8800 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
8801 enum ipr_shutdown_type shutdown_type)
8802 {
8803 ENTER;
8804 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8805 ioa_cfg->sdt_state = ABORT_DUMP;
8806 ioa_cfg->reset_retries = 0;
8807 ioa_cfg->in_ioa_bringdown = 1;
8808 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
8809 LEAVE;
8810 }
8811
8812 /**
8813 * __ipr_remove - Remove a single adapter
8814 * @pdev: pci device struct
8815 *
8816 * Adapter hot plug remove entry point.
8817 *
8818 * Return value:
8819 * none
8820 **/
8821 static void __ipr_remove(struct pci_dev *pdev)
8822 {
8823 unsigned long host_lock_flags = 0;
8824 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8825 ENTER;
8826
8827 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8828 while(ioa_cfg->in_reset_reload) {
8829 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8830 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8831 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8832 }
8833
8834 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8835
8836 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8837 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8838 flush_scheduled_work();
8839 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8840
8841 spin_lock(&ipr_driver_lock);
8842 list_del(&ioa_cfg->queue);
8843 spin_unlock(&ipr_driver_lock);
8844
8845 if (ioa_cfg->sdt_state == ABORT_DUMP)
8846 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8847 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8848
8849 ipr_free_all_resources(ioa_cfg);
8850
8851 LEAVE;
8852 }
8853
8854 /**
8855 * ipr_remove - IOA hot plug remove entry point
8856 * @pdev: pci device struct
8857 *
8858 * Adapter hot plug remove entry point.
8859 *
8860 * Return value:
8861 * none
8862 **/
8863 static void __devexit ipr_remove(struct pci_dev *pdev)
8864 {
8865 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8866
8867 ENTER;
8868
8869 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
8870 &ipr_trace_attr);
8871 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
8872 &ipr_dump_attr);
8873 scsi_remove_host(ioa_cfg->host);
8874
8875 __ipr_remove(pdev);
8876
8877 LEAVE;
8878 }
8879
8880 /**
8881 * ipr_probe - Adapter hot plug add entry point
8882 *
8883 * Return value:
8884 * 0 on success / non-zero on failure
8885 **/
8886 static int __devinit ipr_probe(struct pci_dev *pdev,
8887 const struct pci_device_id *dev_id)
8888 {
8889 struct ipr_ioa_cfg *ioa_cfg;
8890 int rc;
8891
8892 rc = ipr_probe_ioa(pdev, dev_id);
8893
8894 if (rc)
8895 return rc;
8896
8897 ioa_cfg = pci_get_drvdata(pdev);
8898 rc = ipr_probe_ioa_part2(ioa_cfg);
8899
8900 if (rc) {
8901 __ipr_remove(pdev);
8902 return rc;
8903 }
8904
8905 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
8906
8907 if (rc) {
8908 __ipr_remove(pdev);
8909 return rc;
8910 }
8911
8912 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
8913 &ipr_trace_attr);
8914
8915 if (rc) {
8916 scsi_remove_host(ioa_cfg->host);
8917 __ipr_remove(pdev);
8918 return rc;
8919 }
8920
8921 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
8922 &ipr_dump_attr);
8923
8924 if (rc) {
8925 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
8926 &ipr_trace_attr);
8927 scsi_remove_host(ioa_cfg->host);
8928 __ipr_remove(pdev);
8929 return rc;
8930 }
8931
8932 scsi_scan_host(ioa_cfg->host);
8933 ipr_scan_vsets(ioa_cfg);
8934 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
8935 ioa_cfg->allow_ml_add_del = 1;
8936 ioa_cfg->host->max_channel = IPR_VSET_BUS;
8937 schedule_work(&ioa_cfg->work_q);
8938 return 0;
8939 }
8940
8941 /**
8942 * ipr_shutdown - Shutdown handler.
8943 * @pdev: pci device struct
8944 *
8945 * This function is invoked upon system shutdown/reboot. It will issue
8946 * an adapter shutdown to the adapter to flush the write cache.
8947 *
8948 * Return value:
8949 * none
8950 **/
8951 static void ipr_shutdown(struct pci_dev *pdev)
8952 {
8953 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8954 unsigned long lock_flags = 0;
8955
8956 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8957 while(ioa_cfg->in_reset_reload) {
8958 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8959 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8960 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8961 }
8962
8963 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8965 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8966 }
8967
8968 static struct pci_device_id ipr_pci_table[] __devinitdata = {
8969 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8970 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
8971 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8972 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
8973 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8974 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
8975 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8976 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
8977 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8978 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
8979 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8980 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
8981 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8982 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
8983 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8984 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
8985 IPR_USE_LONG_TRANSOP_TIMEOUT },
8986 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
8987 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
8988 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
8989 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
8990 IPR_USE_LONG_TRANSOP_TIMEOUT },
8991 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
8992 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
8993 IPR_USE_LONG_TRANSOP_TIMEOUT },
8994 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
8995 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
8996 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
8997 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
8998 IPR_USE_LONG_TRANSOP_TIMEOUT},
8999 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9000 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9001 IPR_USE_LONG_TRANSOP_TIMEOUT },
9002 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9003 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
9004 IPR_USE_LONG_TRANSOP_TIMEOUT },
9005 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9006 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
9007 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9008 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
9009 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9010 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
9011 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
9012 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
9013 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
9014 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9015 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
9016 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9017 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
9018 IPR_USE_LONG_TRANSOP_TIMEOUT },
9019 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9020 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
9021 IPR_USE_LONG_TRANSOP_TIMEOUT },
9022 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9023 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
9024 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9025 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
9026 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9027 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
9028 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9029 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
9030 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9031 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
9032 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9033 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
9034 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9035 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
9036 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9037 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 },
9038 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9039 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
9040 { }
9041 };
9042 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
9043
9044 static struct pci_error_handlers ipr_err_handler = {
9045 .error_detected = ipr_pci_error_detected,
9046 .slot_reset = ipr_pci_slot_reset,
9047 };
9048
9049 static struct pci_driver ipr_driver = {
9050 .name = IPR_NAME,
9051 .id_table = ipr_pci_table,
9052 .probe = ipr_probe,
9053 .remove = __devexit_p(ipr_remove),
9054 .shutdown = ipr_shutdown,
9055 .err_handler = &ipr_err_handler,
9056 };
9057
9058 /**
9059 * ipr_halt_done - Shutdown prepare completion
9060 *
9061 * Return value:
9062 * none
9063 **/
9064 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9065 {
9066 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9067
9068 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
9069 }
9070
9071 /**
9072 * ipr_halt - Issue shutdown prepare to all adapters
9073 *
9074 * Return value:
9075 * NOTIFY_OK on success / NOTIFY_DONE on failure
9076 **/
9077 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9078 {
9079 struct ipr_cmnd *ipr_cmd;
9080 struct ipr_ioa_cfg *ioa_cfg;
9081 unsigned long flags = 0;
9082
9083 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
9084 return NOTIFY_DONE;
9085
9086 spin_lock(&ipr_driver_lock);
9087
9088 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
9089 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9090 if (!ioa_cfg->allow_cmds) {
9091 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9092 continue;
9093 }
9094
9095 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9096 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9097 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9098 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9099 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
9100
9101 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
9102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9103 }
9104 spin_unlock(&ipr_driver_lock);
9105
9106 return NOTIFY_OK;
9107 }
9108
9109 static struct notifier_block ipr_notifier = {
9110 ipr_halt, NULL, 0
9111 };
9112
9113 /**
9114 * ipr_init - Module entry point
9115 *
9116 * Return value:
9117 * 0 on success / negative value on failure
9118 **/
9119 static int __init ipr_init(void)
9120 {
9121 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
9122 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
9123
9124 register_reboot_notifier(&ipr_notifier);
9125 return pci_register_driver(&ipr_driver);
9126 }
9127
9128 /**
9129 * ipr_exit - Module unload
9130 *
9131 * Module unload entry point.
9132 *
9133 * Return value:
9134 * none
9135 **/
9136 static void __exit ipr_exit(void)
9137 {
9138 unregister_reboot_notifier(&ipr_notifier);
9139 pci_unregister_driver(&ipr_driver);
9140 }
9141
9142 module_init(ipr_init);
9143 module_exit(ipr_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree