?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
USB: ftdi_sio: Add more identifiers
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / ipr.c
blobfd860d952b288f3cacf6066253f4d75936e0c53e
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/vmalloc.h>
64 #include <linux/ioport.h>
65 #include <linux/delay.h>
66 #include <linux/pci.h>
67 #include <linux/wait.h>
68 #include <linux/spinlock.h>
69 #include <linux/sched.h>
70 #include <linux/interrupt.h>
71 #include <linux/blkdev.h>
72 #include <linux/firmware.h>
73 #include <linux/module.h>
74 #include <linux/moduleparam.h>
75 #include <linux/libata.h>
76 #include <linux/hdreg.h>
77 #include <linux/reboot.h>
78 #include <linux/stringify.h>
79 #include <asm/io.h>
80 #include <asm/irq.h>
81 #include <asm/processor.h>
82 #include <scsi/scsi.h>
83 #include <scsi/scsi_host.h>
84 #include <scsi/scsi_tcq.h>
85 #include <scsi/scsi_eh.h>
86 #include <scsi/scsi_cmnd.h>
87 #include "ipr.h"
88
89 /*
90 * Global Data
91 */
92 static LIST_HEAD(ipr_ioa_head);
93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
94 static unsigned int ipr_max_speed = 1;
95 static int ipr_testmode = 0;
96 static unsigned int ipr_fastfail = 0;
97 static unsigned int ipr_transop_timeout = 0;
98 static unsigned int ipr_debug = 0;
99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
100 static unsigned int ipr_dual_ioa_raid = 1;
101 static DEFINE_SPINLOCK(ipr_driver_lock);
102
103 /* This table describes the differences between DMA controller chips */
104 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
105 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
106 .mailbox = 0x0042C,
107 .cache_line_size = 0x20,
108 {
109 .set_interrupt_mask_reg = 0x0022C,
110 .clr_interrupt_mask_reg = 0x00230,
111 .clr_interrupt_mask_reg32 = 0x00230,
112 .sense_interrupt_mask_reg = 0x0022C,
113 .sense_interrupt_mask_reg32 = 0x0022C,
114 .clr_interrupt_reg = 0x00228,
115 .clr_interrupt_reg32 = 0x00228,
116 .sense_interrupt_reg = 0x00224,
117 .sense_interrupt_reg32 = 0x00224,
118 .ioarrin_reg = 0x00404,
119 .sense_uproc_interrupt_reg = 0x00214,
120 .sense_uproc_interrupt_reg32 = 0x00214,
121 .set_uproc_interrupt_reg = 0x00214,
122 .set_uproc_interrupt_reg32 = 0x00214,
123 .clr_uproc_interrupt_reg = 0x00218,
124 .clr_uproc_interrupt_reg32 = 0x00218
125 }
126 },
127 { /* Snipe and Scamp */
128 .mailbox = 0x0052C,
129 .cache_line_size = 0x20,
130 {
131 .set_interrupt_mask_reg = 0x00288,
132 .clr_interrupt_mask_reg = 0x0028C,
133 .clr_interrupt_mask_reg32 = 0x0028C,
134 .sense_interrupt_mask_reg = 0x00288,
135 .sense_interrupt_mask_reg32 = 0x00288,
136 .clr_interrupt_reg = 0x00284,
137 .clr_interrupt_reg32 = 0x00284,
138 .sense_interrupt_reg = 0x00280,
139 .sense_interrupt_reg32 = 0x00280,
140 .ioarrin_reg = 0x00504,
141 .sense_uproc_interrupt_reg = 0x00290,
142 .sense_uproc_interrupt_reg32 = 0x00290,
143 .set_uproc_interrupt_reg = 0x00290,
144 .set_uproc_interrupt_reg32 = 0x00290,
145 .clr_uproc_interrupt_reg = 0x00294,
146 .clr_uproc_interrupt_reg32 = 0x00294
147 }
148 },
149 { /* CRoC */
150 .mailbox = 0x00044,
151 .cache_line_size = 0x20,
152 {
153 .set_interrupt_mask_reg = 0x00010,
154 .clr_interrupt_mask_reg = 0x00018,
155 .clr_interrupt_mask_reg32 = 0x0001C,
156 .sense_interrupt_mask_reg = 0x00010,
157 .sense_interrupt_mask_reg32 = 0x00014,
158 .clr_interrupt_reg = 0x00008,
159 .clr_interrupt_reg32 = 0x0000C,
160 .sense_interrupt_reg = 0x00000,
161 .sense_interrupt_reg32 = 0x00004,
162 .ioarrin_reg = 0x00070,
163 .sense_uproc_interrupt_reg = 0x00020,
164 .sense_uproc_interrupt_reg32 = 0x00024,
165 .set_uproc_interrupt_reg = 0x00020,
166 .set_uproc_interrupt_reg32 = 0x00024,
167 .clr_uproc_interrupt_reg = 0x00028,
168 .clr_uproc_interrupt_reg32 = 0x0002C,
169 .init_feedback_reg = 0x0005C,
170 .dump_addr_reg = 0x00064,
171 .dump_data_reg = 0x00068,
172 .endian_swap_reg = 0x00084
173 }
174 },
175 };
176
177 static const struct ipr_chip_t ipr_chip[] = {
178 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
179 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
180 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
183 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
184 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
186 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
187 };
188
189 static int ipr_max_bus_speeds [] = {
190 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
191 };
192
193 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
194 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
195 module_param_named(max_speed, ipr_max_speed, uint, 0);
196 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
197 module_param_named(log_level, ipr_log_level, uint, 0);
198 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
199 module_param_named(testmode, ipr_testmode, int, 0);
200 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
201 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
202 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
203 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
204 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
205 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
206 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
207 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
208 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
209 module_param_named(max_devs, ipr_max_devs, int, 0);
210 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
211 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
212 MODULE_LICENSE("GPL");
213 MODULE_VERSION(IPR_DRIVER_VERSION);
214
215 /* A constant array of IOASCs/URCs/Error Messages */
216 static const
217 struct ipr_error_table_t ipr_error_table[] = {
218 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
219 "8155: An unknown error was received"},
220 {0x00330000, 0, 0,
221 "Soft underlength error"},
222 {0x005A0000, 0, 0,
223 "Command to be cancelled not found"},
224 {0x00808000, 0, 0,
225 "Qualified success"},
226 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
227 "FFFE: Soft device bus error recovered by the IOA"},
228 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
229 "4101: Soft device bus fabric error"},
230 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
231 "FFFC: Logical block guard error recovered by the device"},
232 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
233 "FFFC: Logical block reference tag error recovered by the device"},
234 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
235 "4171: Recovered scatter list tag / sequence number error"},
236 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
237 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
238 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
239 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
240 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
241 "FFFD: Recovered logical block reference tag error detected by the IOA"},
242 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
243 "FFFD: Logical block guard error recovered by the IOA"},
244 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
245 "FFF9: Device sector reassign successful"},
246 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
247 "FFF7: Media error recovered by device rewrite procedures"},
248 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
249 "7001: IOA sector reassignment successful"},
250 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
251 "FFF9: Soft media error. Sector reassignment recommended"},
252 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FFF7: Media error recovered by IOA rewrite procedures"},
254 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
255 "FF3D: Soft PCI bus error recovered by the IOA"},
256 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
257 "FFF6: Device hardware error recovered by the IOA"},
258 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
259 "FFF6: Device hardware error recovered by the device"},
260 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
261 "FF3D: Soft IOA error recovered by the IOA"},
262 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
263 "FFFA: Undefined device response recovered by the IOA"},
264 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
265 "FFF6: Device bus error, message or command phase"},
266 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
267 "FFFE: Task Management Function failed"},
268 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
269 "FFF6: Failure prediction threshold exceeded"},
270 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
271 "8009: Impending cache battery pack failure"},
272 {0x02040400, 0, 0,
273 "34FF: Disk device format in progress"},
274 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
275 "9070: IOA requested reset"},
276 {0x023F0000, 0, 0,
277 "Synchronization required"},
278 {0x024E0000, 0, 0,
279 "No ready, IOA shutdown"},
280 {0x025A0000, 0, 0,
281 "Not ready, IOA has been shutdown"},
282 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
283 "3020: Storage subsystem configuration error"},
284 {0x03110B00, 0, 0,
285 "FFF5: Medium error, data unreadable, recommend reassign"},
286 {0x03110C00, 0, 0,
287 "7000: Medium error, data unreadable, do not reassign"},
288 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
289 "FFF3: Disk media format bad"},
290 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
291 "3002: Addressed device failed to respond to selection"},
292 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
293 "3100: Device bus error"},
294 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
295 "3109: IOA timed out a device command"},
296 {0x04088000, 0, 0,
297 "3120: SCSI bus is not operational"},
298 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
299 "4100: Hard device bus fabric error"},
300 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
301 "310C: Logical block guard error detected by the device"},
302 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
303 "310C: Logical block reference tag error detected by the device"},
304 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
305 "4170: Scatter list tag / sequence number error"},
306 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
307 "8150: Logical block CRC error on IOA to Host transfer"},
308 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
309 "4170: Logical block sequence number error on IOA to Host transfer"},
310 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
311 "310D: Logical block reference tag error detected by the IOA"},
312 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
313 "310D: Logical block guard error detected by the IOA"},
314 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
315 "9000: IOA reserved area data check"},
316 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
317 "9001: IOA reserved area invalid data pattern"},
318 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
319 "9002: IOA reserved area LRC error"},
320 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
321 "Hardware Error, IOA metadata access error"},
322 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
323 "102E: Out of alternate sectors for disk storage"},
324 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
325 "FFF4: Data transfer underlength error"},
326 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
327 "FFF4: Data transfer overlength error"},
328 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
329 "3400: Logical unit failure"},
330 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
331 "FFF4: Device microcode is corrupt"},
332 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
333 "8150: PCI bus error"},
334 {0x04430000, 1, 0,
335 "Unsupported device bus message received"},
336 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
337 "FFF4: Disk device problem"},
338 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
339 "8150: Permanent IOA failure"},
340 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
341 "3010: Disk device returned wrong response to IOA"},
342 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
343 "8151: IOA microcode error"},
344 {0x04448500, 0, 0,
345 "Device bus status error"},
346 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
347 "8157: IOA error requiring IOA reset to recover"},
348 {0x04448700, 0, 0,
349 "ATA device status error"},
350 {0x04490000, 0, 0,
351 "Message reject received from the device"},
352 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
353 "8008: A permanent cache battery pack failure occurred"},
354 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
355 "9090: Disk unit has been modified after the last known status"},
356 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
357 "9081: IOA detected device error"},
358 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
359 "9082: IOA detected device error"},
360 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
361 "3110: Device bus error, message or command phase"},
362 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
363 "3110: SAS Command / Task Management Function failed"},
364 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
365 "9091: Incorrect hardware configuration change has been detected"},
366 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
367 "9073: Invalid multi-adapter configuration"},
368 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
369 "4010: Incorrect connection between cascaded expanders"},
370 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
371 "4020: Connections exceed IOA design limits"},
372 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
373 "4030: Incorrect multipath connection"},
374 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
375 "4110: Unsupported enclosure function"},
376 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
377 "FFF4: Command to logical unit failed"},
378 {0x05240000, 1, 0,
379 "Illegal request, invalid request type or request packet"},
380 {0x05250000, 0, 0,
381 "Illegal request, invalid resource handle"},
382 {0x05258000, 0, 0,
383 "Illegal request, commands not allowed to this device"},
384 {0x05258100, 0, 0,
385 "Illegal request, command not allowed to a secondary adapter"},
386 {0x05258200, 0, 0,
387 "Illegal request, command not allowed to a non-optimized resource"},
388 {0x05260000, 0, 0,
389 "Illegal request, invalid field in parameter list"},
390 {0x05260100, 0, 0,
391 "Illegal request, parameter not supported"},
392 {0x05260200, 0, 0,
393 "Illegal request, parameter value invalid"},
394 {0x052C0000, 0, 0,
395 "Illegal request, command sequence error"},
396 {0x052C8000, 1, 0,
397 "Illegal request, dual adapter support not enabled"},
398 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
399 "9031: Array protection temporarily suspended, protection resuming"},
400 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
401 "9040: Array protection temporarily suspended, protection resuming"},
402 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
403 "3140: Device bus not ready to ready transition"},
404 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
405 "FFFB: SCSI bus was reset"},
406 {0x06290500, 0, 0,
407 "FFFE: SCSI bus transition to single ended"},
408 {0x06290600, 0, 0,
409 "FFFE: SCSI bus transition to LVD"},
410 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
411 "FFFB: SCSI bus was reset by another initiator"},
412 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
413 "3029: A device replacement has occurred"},
414 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
415 "9051: IOA cache data exists for a missing or failed device"},
416 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
417 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
418 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
419 "9025: Disk unit is not supported at its physical location"},
420 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
421 "3020: IOA detected a SCSI bus configuration error"},
422 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
423 "3150: SCSI bus configuration error"},
424 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
425 "9074: Asymmetric advanced function disk configuration"},
426 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
427 "4040: Incomplete multipath connection between IOA and enclosure"},
428 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
429 "4041: Incomplete multipath connection between enclosure and device"},
430 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
431 "9075: Incomplete multipath connection between IOA and remote IOA"},
432 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
433 "9076: Configuration error, missing remote IOA"},
434 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
435 "4050: Enclosure does not support a required multipath function"},
436 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
437 "4070: Logically bad block written on device"},
438 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
439 "9041: Array protection temporarily suspended"},
440 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
441 "9042: Corrupt array parity detected on specified device"},
442 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
443 "9030: Array no longer protected due to missing or failed disk unit"},
444 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
445 "9071: Link operational transition"},
446 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
447 "9072: Link not operational transition"},
448 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
449 "9032: Array exposed but still protected"},
450 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
451 "70DD: Device forced failed by disrupt device command"},
452 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
453 "4061: Multipath redundancy level got better"},
454 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
455 "4060: Multipath redundancy level got worse"},
456 {0x07270000, 0, 0,
457 "Failure due to other device"},
458 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
459 "9008: IOA does not support functions expected by devices"},
460 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
461 "9010: Cache data associated with attached devices cannot be found"},
462 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
463 "9011: Cache data belongs to devices other than those attached"},
464 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
465 "9020: Array missing 2 or more devices with only 1 device present"},
466 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
467 "9021: Array missing 2 or more devices with 2 or more devices present"},
468 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
469 "9022: Exposed array is missing a required device"},
470 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
471 "9023: Array member(s) not at required physical locations"},
472 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
473 "9024: Array not functional due to present hardware configuration"},
474 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
475 "9026: Array not functional due to present hardware configuration"},
476 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
477 "9027: Array is missing a device and parity is out of sync"},
478 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
479 "9028: Maximum number of arrays already exist"},
480 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
481 "9050: Required cache data cannot be located for a disk unit"},
482 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
483 "9052: Cache data exists for a device that has been modified"},
484 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
485 "9054: IOA resources not available due to previous problems"},
486 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
487 "9092: Disk unit requires initialization before use"},
488 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
489 "9029: Incorrect hardware configuration change has been detected"},
490 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
491 "9060: One or more disk pairs are missing from an array"},
492 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
493 "9061: One or more disks are missing from an array"},
494 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
495 "9062: One or more disks are missing from an array"},
496 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
497 "9063: Maximum number of functional arrays has been exceeded"},
498 {0x0B260000, 0, 0,
499 "Aborted command, invalid descriptor"},
500 {0x0B5A0000, 0, 0,
501 "Command terminated by host"}
502 };
503
504 static const struct ipr_ses_table_entry ipr_ses_table[] = {
505 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
506 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
507 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
508 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
509 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
510 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
511 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
512 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
513 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
514 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
515 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
516 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
517 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
518 };
519
520 /*
521 * Function Prototypes
522 */
523 static int ipr_reset_alert(struct ipr_cmnd *);
524 static void ipr_process_ccn(struct ipr_cmnd *);
525 static void ipr_process_error(struct ipr_cmnd *);
526 static void ipr_reset_ioa_job(struct ipr_cmnd *);
527 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
528 enum ipr_shutdown_type);
529
530 #ifdef CONFIG_SCSI_IPR_TRACE
531 /**
532 * ipr_trc_hook - Add a trace entry to the driver trace
533 * @ipr_cmd: ipr command struct
534 * @type: trace type
535 * @add_data: additional data
536 *
537 * Return value:
538 * none
539 **/
540 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
541 u8 type, u32 add_data)
542 {
543 struct ipr_trace_entry *trace_entry;
544 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
545
546 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
547 trace_entry->time = jiffies;
548 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
549 trace_entry->type = type;
550 if (ipr_cmd->ioa_cfg->sis64)
551 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
552 else
553 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
554 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
555 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
556 trace_entry->u.add_data = add_data;
557 }
558 #else
559 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
560 #endif
561
562 /**
563 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
564 * @ipr_cmd: ipr command struct
565 *
566 * Return value:
567 * none
568 **/
569 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
570 {
571 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
572 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
573 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
574 dma_addr_t dma_addr = ipr_cmd->dma_addr;
575
576 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
577 ioarcb->data_transfer_length = 0;
578 ioarcb->read_data_transfer_length = 0;
579 ioarcb->ioadl_len = 0;
580 ioarcb->read_ioadl_len = 0;
581
582 if (ipr_cmd->ioa_cfg->sis64) {
583 ioarcb->u.sis64_addr_data.data_ioadl_addr =
584 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
585 ioasa64->u.gata.status = 0;
586 } else {
587 ioarcb->write_ioadl_addr =
588 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
589 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
590 ioasa->u.gata.status = 0;
591 }
592
593 ioasa->hdr.ioasc = 0;
594 ioasa->hdr.residual_data_len = 0;
595 ipr_cmd->scsi_cmd = NULL;
596 ipr_cmd->qc = NULL;
597 ipr_cmd->sense_buffer[0] = 0;
598 ipr_cmd->dma_use_sg = 0;
599 }
600
601 /**
602 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
603 * @ipr_cmd: ipr command struct
604 *
605 * Return value:
606 * none
607 **/
608 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
609 {
610 ipr_reinit_ipr_cmnd(ipr_cmd);
611 ipr_cmd->u.scratch = 0;
612 ipr_cmd->sibling = NULL;
613 init_timer(&ipr_cmd->timer);
614 }
615
616 /**
617 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
618 * @ioa_cfg: ioa config struct
619 *
620 * Return value:
621 * pointer to ipr command struct
622 **/
623 static
624 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
625 {
626 struct ipr_cmnd *ipr_cmd;
627
628 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
629 list_del(&ipr_cmd->queue);
630 ipr_init_ipr_cmnd(ipr_cmd);
631
632 return ipr_cmd;
633 }
634
635 /**
636 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
637 * @ioa_cfg: ioa config struct
638 * @clr_ints: interrupts to clear
639 *
640 * This function masks all interrupts on the adapter, then clears the
641 * interrupts specified in the mask
642 *
643 * Return value:
644 * none
645 **/
646 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
647 u32 clr_ints)
648 {
649 volatile u32 int_reg;
650
651 /* Stop new interrupts */
652 ioa_cfg->allow_interrupts = 0;
653
654 /* Set interrupt mask to stop all new interrupts */
655 if (ioa_cfg->sis64)
656 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
657 else
658 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
659
660 /* Clear any pending interrupts */
661 if (ioa_cfg->sis64)
662 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
663 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
664 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
665 }
666
667 /**
668 * ipr_save_pcix_cmd_reg - Save PCI-X command register
669 * @ioa_cfg: ioa config struct
670 *
671 * Return value:
672 * 0 on success / -EIO on failure
673 **/
674 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
675 {
676 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
677
678 if (pcix_cmd_reg == 0)
679 return 0;
680
681 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
682 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
683 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
684 return -EIO;
685 }
686
687 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
688 return 0;
689 }
690
691 /**
692 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
693 * @ioa_cfg: ioa config struct
694 *
695 * Return value:
696 * 0 on success / -EIO on failure
697 **/
698 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
699 {
700 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
701
702 if (pcix_cmd_reg) {
703 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
704 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
705 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
706 return -EIO;
707 }
708 }
709
710 return 0;
711 }
712
713 /**
714 * ipr_sata_eh_done - done function for aborted SATA commands
715 * @ipr_cmd: ipr command struct
716 *
717 * This function is invoked for ops generated to SATA
718 * devices which are being aborted.
719 *
720 * Return value:
721 * none
722 **/
723 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
724 {
725 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
726 struct ata_queued_cmd *qc = ipr_cmd->qc;
727 struct ipr_sata_port *sata_port = qc->ap->private_data;
728
729 qc->err_mask |= AC_ERR_OTHER;
730 sata_port->ioasa.status |= ATA_BUSY;
731 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
732 ata_qc_complete(qc);
733 }
734
735 /**
736 * ipr_scsi_eh_done - mid-layer done function for aborted ops
737 * @ipr_cmd: ipr command struct
738 *
739 * This function is invoked by the interrupt handler for
740 * ops generated by the SCSI mid-layer which are being aborted.
741 *
742 * Return value:
743 * none
744 **/
745 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
746 {
747 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
748 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
749
750 scsi_cmd->result |= (DID_ERROR << 16);
751
752 scsi_dma_unmap(ipr_cmd->scsi_cmd);
753 scsi_cmd->scsi_done(scsi_cmd);
754 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
755 }
756
757 /**
758 * ipr_fail_all_ops - Fails all outstanding ops.
759 * @ioa_cfg: ioa config struct
760 *
761 * This function fails all outstanding ops.
762 *
763 * Return value:
764 * none
765 **/
766 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
767 {
768 struct ipr_cmnd *ipr_cmd, *temp;
769
770 ENTER;
771 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
772 list_del(&ipr_cmd->queue);
773
774 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
775 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
776
777 if (ipr_cmd->scsi_cmd)
778 ipr_cmd->done = ipr_scsi_eh_done;
779 else if (ipr_cmd->qc)
780 ipr_cmd->done = ipr_sata_eh_done;
781
782 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
783 del_timer(&ipr_cmd->timer);
784 ipr_cmd->done(ipr_cmd);
785 }
786
787 LEAVE;
788 }
789
790 /**
791 * ipr_send_command - Send driver initiated requests.
792 * @ipr_cmd: ipr command struct
793 *
794 * This function sends a command to the adapter using the correct write call.
795 * In the case of sis64, calculate the ioarcb size required. Then or in the
796 * appropriate bits.
797 *
798 * Return value:
799 * none
800 **/
801 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
802 {
803 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
804 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
805
806 if (ioa_cfg->sis64) {
807 /* The default size is 256 bytes */
808 send_dma_addr |= 0x1;
809
810 /* If the number of ioadls * size of ioadl > 128 bytes,
811 then use a 512 byte ioarcb */
812 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
813 send_dma_addr |= 0x4;
814 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
815 } else
816 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
817 }
818
819 /**
820 * ipr_do_req - Send driver initiated requests.
821 * @ipr_cmd: ipr command struct
822 * @done: done function
823 * @timeout_func: timeout function
824 * @timeout: timeout value
825 *
826 * This function sends the specified command to the adapter with the
827 * timeout given. The done function is invoked on command completion.
828 *
829 * Return value:
830 * none
831 **/
832 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
833 void (*done) (struct ipr_cmnd *),
834 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
835 {
836 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
837
838 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
839
840 ipr_cmd->done = done;
841
842 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
843 ipr_cmd->timer.expires = jiffies + timeout;
844 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
845
846 add_timer(&ipr_cmd->timer);
847
848 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
849
850 mb();
851
852 ipr_send_command(ipr_cmd);
853 }
854
855 /**
856 * ipr_internal_cmd_done - Op done function for an internally generated op.
857 * @ipr_cmd: ipr command struct
858 *
859 * This function is the op done function for an internally generated,
860 * blocking op. It simply wakes the sleeping thread.
861 *
862 * Return value:
863 * none
864 **/
865 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
866 {
867 if (ipr_cmd->sibling)
868 ipr_cmd->sibling = NULL;
869 else
870 complete(&ipr_cmd->completion);
871 }
872
873 /**
874 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
875 * @ipr_cmd: ipr command struct
876 * @dma_addr: dma address
877 * @len: transfer length
878 * @flags: ioadl flag value
879 *
880 * This function initializes an ioadl in the case where there is only a single
881 * descriptor.
882 *
883 * Return value:
884 * nothing
885 **/
886 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
887 u32 len, int flags)
888 {
889 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
890 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
891
892 ipr_cmd->dma_use_sg = 1;
893
894 if (ipr_cmd->ioa_cfg->sis64) {
895 ioadl64->flags = cpu_to_be32(flags);
896 ioadl64->data_len = cpu_to_be32(len);
897 ioadl64->address = cpu_to_be64(dma_addr);
898
899 ipr_cmd->ioarcb.ioadl_len =
900 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
901 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
902 } else {
903 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
904 ioadl->address = cpu_to_be32(dma_addr);
905
906 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
907 ipr_cmd->ioarcb.read_ioadl_len =
908 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
909 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
910 } else {
911 ipr_cmd->ioarcb.ioadl_len =
912 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
913 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
914 }
915 }
916 }
917
918 /**
919 * ipr_send_blocking_cmd - Send command and sleep on its completion.
920 * @ipr_cmd: ipr command struct
921 * @timeout_func: function to invoke if command times out
922 * @timeout: timeout
923 *
924 * Return value:
925 * none
926 **/
927 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
928 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
929 u32 timeout)
930 {
931 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
932
933 init_completion(&ipr_cmd->completion);
934 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
935
936 spin_unlock_irq(ioa_cfg->host->host_lock);
937 wait_for_completion(&ipr_cmd->completion);
938 spin_lock_irq(ioa_cfg->host->host_lock);
939 }
940
941 /**
942 * ipr_send_hcam - Send an HCAM to the adapter.
943 * @ioa_cfg: ioa config struct
944 * @type: HCAM type
945 * @hostrcb: hostrcb struct
946 *
947 * This function will send a Host Controlled Async command to the adapter.
948 * If HCAMs are currently not allowed to be issued to the adapter, it will
949 * place the hostrcb on the free queue.
950 *
951 * Return value:
952 * none
953 **/
954 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
955 struct ipr_hostrcb *hostrcb)
956 {
957 struct ipr_cmnd *ipr_cmd;
958 struct ipr_ioarcb *ioarcb;
959
960 if (ioa_cfg->allow_cmds) {
961 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
962 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
963 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
964
965 ipr_cmd->u.hostrcb = hostrcb;
966 ioarcb = &ipr_cmd->ioarcb;
967
968 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
969 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
970 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
971 ioarcb->cmd_pkt.cdb[1] = type;
972 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
973 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
974
975 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
976 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
977
978 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
979 ipr_cmd->done = ipr_process_ccn;
980 else
981 ipr_cmd->done = ipr_process_error;
982
983 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
984
985 mb();
986
987 ipr_send_command(ipr_cmd);
988 } else {
989 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
990 }
991 }
992
993 /**
994 * ipr_update_ata_class - Update the ata class in the resource entry
995 * @res: resource entry struct
996 * @proto: cfgte device bus protocol value
997 *
998 * Return value:
999 * none
1000 **/
1001 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1002 {
1003 switch(proto) {
1004 case IPR_PROTO_SATA:
1005 case IPR_PROTO_SAS_STP:
1006 res->ata_class = ATA_DEV_ATA;
1007 break;
1008 case IPR_PROTO_SATA_ATAPI:
1009 case IPR_PROTO_SAS_STP_ATAPI:
1010 res->ata_class = ATA_DEV_ATAPI;
1011 break;
1012 default:
1013 res->ata_class = ATA_DEV_UNKNOWN;
1014 break;
1015 };
1016 }
1017
1018 /**
1019 * ipr_init_res_entry - Initialize a resource entry struct.
1020 * @res: resource entry struct
1021 * @cfgtew: config table entry wrapper struct
1022 *
1023 * Return value:
1024 * none
1025 **/
1026 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1027 struct ipr_config_table_entry_wrapper *cfgtew)
1028 {
1029 int found = 0;
1030 unsigned int proto;
1031 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1032 struct ipr_resource_entry *gscsi_res = NULL;
1033
1034 res->needs_sync_complete = 0;
1035 res->in_erp = 0;
1036 res->add_to_ml = 0;
1037 res->del_from_ml = 0;
1038 res->resetting_device = 0;
1039 res->sdev = NULL;
1040 res->sata_port = NULL;
1041
1042 if (ioa_cfg->sis64) {
1043 proto = cfgtew->u.cfgte64->proto;
1044 res->res_flags = cfgtew->u.cfgte64->res_flags;
1045 res->qmodel = IPR_QUEUEING_MODEL64(res);
1046 res->type = cfgtew->u.cfgte64->res_type;
1047
1048 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1049 sizeof(res->res_path));
1050
1051 res->bus = 0;
1052 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1053 sizeof(res->dev_lun.scsi_lun));
1054 res->lun = scsilun_to_int(&res->dev_lun);
1055
1056 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1057 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1058 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1059 found = 1;
1060 res->target = gscsi_res->target;
1061 break;
1062 }
1063 }
1064 if (!found) {
1065 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1066 ioa_cfg->max_devs_supported);
1067 set_bit(res->target, ioa_cfg->target_ids);
1068 }
1069 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1070 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1071 res->target = 0;
1072 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1073 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1074 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1075 ioa_cfg->max_devs_supported);
1076 set_bit(res->target, ioa_cfg->array_ids);
1077 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1078 res->bus = IPR_VSET_VIRTUAL_BUS;
1079 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1080 ioa_cfg->max_devs_supported);
1081 set_bit(res->target, ioa_cfg->vset_ids);
1082 } else {
1083 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1084 ioa_cfg->max_devs_supported);
1085 set_bit(res->target, ioa_cfg->target_ids);
1086 }
1087 } else {
1088 proto = cfgtew->u.cfgte->proto;
1089 res->qmodel = IPR_QUEUEING_MODEL(res);
1090 res->flags = cfgtew->u.cfgte->flags;
1091 if (res->flags & IPR_IS_IOA_RESOURCE)
1092 res->type = IPR_RES_TYPE_IOAFP;
1093 else
1094 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1095
1096 res->bus = cfgtew->u.cfgte->res_addr.bus;
1097 res->target = cfgtew->u.cfgte->res_addr.target;
1098 res->lun = cfgtew->u.cfgte->res_addr.lun;
1099 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1100 }
1101
1102 ipr_update_ata_class(res, proto);
1103 }
1104
1105 /**
1106 * ipr_is_same_device - Determine if two devices are the same.
1107 * @res: resource entry struct
1108 * @cfgtew: config table entry wrapper struct
1109 *
1110 * Return value:
1111 * 1 if the devices are the same / 0 otherwise
1112 **/
1113 static int ipr_is_same_device(struct ipr_resource_entry *res,
1114 struct ipr_config_table_entry_wrapper *cfgtew)
1115 {
1116 if (res->ioa_cfg->sis64) {
1117 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1118 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1119 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1120 sizeof(cfgtew->u.cfgte64->lun))) {
1121 return 1;
1122 }
1123 } else {
1124 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1125 res->target == cfgtew->u.cfgte->res_addr.target &&
1126 res->lun == cfgtew->u.cfgte->res_addr.lun)
1127 return 1;
1128 }
1129
1130 return 0;
1131 }
1132
1133 /**
1134 * ipr_format_res_path - Format the resource path for printing.
1135 * @res_path: resource path
1136 * @buf: buffer
1137 *
1138 * Return value:
1139 * pointer to buffer
1140 **/
1141 static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
1142 {
1143 int i;
1144 char *p = buffer;
1145
1146 *p = '\0';
1147 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1148 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1149 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1150
1151 return buffer;
1152 }
1153
1154 /**
1155 * ipr_update_res_entry - Update the resource entry.
1156 * @res: resource entry struct
1157 * @cfgtew: config table entry wrapper struct
1158 *
1159 * Return value:
1160 * none
1161 **/
1162 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1163 struct ipr_config_table_entry_wrapper *cfgtew)
1164 {
1165 char buffer[IPR_MAX_RES_PATH_LENGTH];
1166 unsigned int proto;
1167 int new_path = 0;
1168
1169 if (res->ioa_cfg->sis64) {
1170 res->flags = cfgtew->u.cfgte64->flags;
1171 res->res_flags = cfgtew->u.cfgte64->res_flags;
1172 res->type = cfgtew->u.cfgte64->res_type;
1173
1174 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1175 sizeof(struct ipr_std_inq_data));
1176
1177 res->qmodel = IPR_QUEUEING_MODEL64(res);
1178 proto = cfgtew->u.cfgte64->proto;
1179 res->res_handle = cfgtew->u.cfgte64->res_handle;
1180 res->dev_id = cfgtew->u.cfgte64->dev_id;
1181
1182 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1183 sizeof(res->dev_lun.scsi_lun));
1184
1185 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1186 sizeof(res->res_path))) {
1187 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1188 sizeof(res->res_path));
1189 new_path = 1;
1190 }
1191
1192 if (res->sdev && new_path)
1193 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1194 ipr_format_res_path(res->res_path, buffer,
1195 sizeof(buffer)));
1196 } else {
1197 res->flags = cfgtew->u.cfgte->flags;
1198 if (res->flags & IPR_IS_IOA_RESOURCE)
1199 res->type = IPR_RES_TYPE_IOAFP;
1200 else
1201 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1202
1203 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1204 sizeof(struct ipr_std_inq_data));
1205
1206 res->qmodel = IPR_QUEUEING_MODEL(res);
1207 proto = cfgtew->u.cfgte->proto;
1208 res->res_handle = cfgtew->u.cfgte->res_handle;
1209 }
1210
1211 ipr_update_ata_class(res, proto);
1212 }
1213
1214 /**
1215 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1216 * for the resource.
1217 * @res: resource entry struct
1218 * @cfgtew: config table entry wrapper struct
1219 *
1220 * Return value:
1221 * none
1222 **/
1223 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1224 {
1225 struct ipr_resource_entry *gscsi_res = NULL;
1226 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1227
1228 if (!ioa_cfg->sis64)
1229 return;
1230
1231 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1232 clear_bit(res->target, ioa_cfg->array_ids);
1233 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1234 clear_bit(res->target, ioa_cfg->vset_ids);
1235 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1236 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1237 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1238 return;
1239 clear_bit(res->target, ioa_cfg->target_ids);
1240
1241 } else if (res->bus == 0)
1242 clear_bit(res->target, ioa_cfg->target_ids);
1243 }
1244
1245 /**
1246 * ipr_handle_config_change - Handle a config change from the adapter
1247 * @ioa_cfg: ioa config struct
1248 * @hostrcb: hostrcb
1249 *
1250 * Return value:
1251 * none
1252 **/
1253 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1254 struct ipr_hostrcb *hostrcb)
1255 {
1256 struct ipr_resource_entry *res = NULL;
1257 struct ipr_config_table_entry_wrapper cfgtew;
1258 __be32 cc_res_handle;
1259
1260 u32 is_ndn = 1;
1261
1262 if (ioa_cfg->sis64) {
1263 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1264 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1265 } else {
1266 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1267 cc_res_handle = cfgtew.u.cfgte->res_handle;
1268 }
1269
1270 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1271 if (res->res_handle == cc_res_handle) {
1272 is_ndn = 0;
1273 break;
1274 }
1275 }
1276
1277 if (is_ndn) {
1278 if (list_empty(&ioa_cfg->free_res_q)) {
1279 ipr_send_hcam(ioa_cfg,
1280 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1281 hostrcb);
1282 return;
1283 }
1284
1285 res = list_entry(ioa_cfg->free_res_q.next,
1286 struct ipr_resource_entry, queue);
1287
1288 list_del(&res->queue);
1289 ipr_init_res_entry(res, &cfgtew);
1290 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1291 }
1292
1293 ipr_update_res_entry(res, &cfgtew);
1294
1295 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1296 if (res->sdev) {
1297 res->del_from_ml = 1;
1298 res->res_handle = IPR_INVALID_RES_HANDLE;
1299 if (ioa_cfg->allow_ml_add_del)
1300 schedule_work(&ioa_cfg->work_q);
1301 } else {
1302 ipr_clear_res_target(res);
1303 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1304 }
1305 } else if (!res->sdev || res->del_from_ml) {
1306 res->add_to_ml = 1;
1307 if (ioa_cfg->allow_ml_add_del)
1308 schedule_work(&ioa_cfg->work_q);
1309 }
1310
1311 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1312 }
1313
1314 /**
1315 * ipr_process_ccn - Op done function for a CCN.
1316 * @ipr_cmd: ipr command struct
1317 *
1318 * This function is the op done function for a configuration
1319 * change notification host controlled async from the adapter.
1320 *
1321 * Return value:
1322 * none
1323 **/
1324 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1325 {
1326 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1327 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1328 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1329
1330 list_del(&hostrcb->queue);
1331 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1332
1333 if (ioasc) {
1334 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1335 dev_err(&ioa_cfg->pdev->dev,
1336 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1337
1338 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1339 } else {
1340 ipr_handle_config_change(ioa_cfg, hostrcb);
1341 }
1342 }
1343
1344 /**
1345 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1346 * @i: index into buffer
1347 * @buf: string to modify
1348 *
1349 * This function will strip all trailing whitespace, pad the end
1350 * of the string with a single space, and NULL terminate the string.
1351 *
1352 * Return value:
1353 * new length of string
1354 **/
1355 static int strip_and_pad_whitespace(int i, char *buf)
1356 {
1357 while (i && buf[i] == ' ')
1358 i--;
1359 buf[i+1] = ' ';
1360 buf[i+2] = '\0';
1361 return i + 2;
1362 }
1363
1364 /**
1365 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1366 * @prefix: string to print at start of printk
1367 * @hostrcb: hostrcb pointer
1368 * @vpd: vendor/product id/sn struct
1369 *
1370 * Return value:
1371 * none
1372 **/
1373 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1374 struct ipr_vpd *vpd)
1375 {
1376 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1377 int i = 0;
1378
1379 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1380 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1381
1382 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1383 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1384
1385 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1386 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1387
1388 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1389 }
1390
1391 /**
1392 * ipr_log_vpd - Log the passed VPD to the error log.
1393 * @vpd: vendor/product id/sn struct
1394 *
1395 * Return value:
1396 * none
1397 **/
1398 static void ipr_log_vpd(struct ipr_vpd *vpd)
1399 {
1400 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1401 + IPR_SERIAL_NUM_LEN];
1402
1403 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1404 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1405 IPR_PROD_ID_LEN);
1406 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1407 ipr_err("Vendor/Product ID: %s\n", buffer);
1408
1409 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1410 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1411 ipr_err(" Serial Number: %s\n", buffer);
1412 }
1413
1414 /**
1415 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1416 * @prefix: string to print at start of printk
1417 * @hostrcb: hostrcb pointer
1418 * @vpd: vendor/product id/sn/wwn struct
1419 *
1420 * Return value:
1421 * none
1422 **/
1423 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1424 struct ipr_ext_vpd *vpd)
1425 {
1426 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1427 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1428 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1429 }
1430
1431 /**
1432 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1433 * @vpd: vendor/product id/sn/wwn struct
1434 *
1435 * Return value:
1436 * none
1437 **/
1438 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1439 {
1440 ipr_log_vpd(&vpd->vpd);
1441 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1442 be32_to_cpu(vpd->wwid[1]));
1443 }
1444
1445 /**
1446 * ipr_log_enhanced_cache_error - Log a cache error.
1447 * @ioa_cfg: ioa config struct
1448 * @hostrcb: hostrcb struct
1449 *
1450 * Return value:
1451 * none
1452 **/
1453 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1454 struct ipr_hostrcb *hostrcb)
1455 {
1456 struct ipr_hostrcb_type_12_error *error;
1457
1458 if (ioa_cfg->sis64)
1459 error = &hostrcb->hcam.u.error64.u.type_12_error;
1460 else
1461 error = &hostrcb->hcam.u.error.u.type_12_error;
1462
1463 ipr_err("-----Current Configuration-----\n");
1464 ipr_err("Cache Directory Card Information:\n");
1465 ipr_log_ext_vpd(&error->ioa_vpd);
1466 ipr_err("Adapter Card Information:\n");
1467 ipr_log_ext_vpd(&error->cfc_vpd);
1468
1469 ipr_err("-----Expected Configuration-----\n");
1470 ipr_err("Cache Directory Card Information:\n");
1471 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1472 ipr_err("Adapter Card Information:\n");
1473 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1474
1475 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1476 be32_to_cpu(error->ioa_data[0]),
1477 be32_to_cpu(error->ioa_data[1]),
1478 be32_to_cpu(error->ioa_data[2]));
1479 }
1480
1481 /**
1482 * ipr_log_cache_error - Log a cache error.
1483 * @ioa_cfg: ioa config struct
1484 * @hostrcb: hostrcb struct
1485 *
1486 * Return value:
1487 * none
1488 **/
1489 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1490 struct ipr_hostrcb *hostrcb)
1491 {
1492 struct ipr_hostrcb_type_02_error *error =
1493 &hostrcb->hcam.u.error.u.type_02_error;
1494
1495 ipr_err("-----Current Configuration-----\n");
1496 ipr_err("Cache Directory Card Information:\n");
1497 ipr_log_vpd(&error->ioa_vpd);
1498 ipr_err("Adapter Card Information:\n");
1499 ipr_log_vpd(&error->cfc_vpd);
1500
1501 ipr_err("-----Expected Configuration-----\n");
1502 ipr_err("Cache Directory Card Information:\n");
1503 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1504 ipr_err("Adapter Card Information:\n");
1505 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1506
1507 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1508 be32_to_cpu(error->ioa_data[0]),
1509 be32_to_cpu(error->ioa_data[1]),
1510 be32_to_cpu(error->ioa_data[2]));
1511 }
1512
1513 /**
1514 * ipr_log_enhanced_config_error - Log a configuration error.
1515 * @ioa_cfg: ioa config struct
1516 * @hostrcb: hostrcb struct
1517 *
1518 * Return value:
1519 * none
1520 **/
1521 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1522 struct ipr_hostrcb *hostrcb)
1523 {
1524 int errors_logged, i;
1525 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1526 struct ipr_hostrcb_type_13_error *error;
1527
1528 error = &hostrcb->hcam.u.error.u.type_13_error;
1529 errors_logged = be32_to_cpu(error->errors_logged);
1530
1531 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1532 be32_to_cpu(error->errors_detected), errors_logged);
1533
1534 dev_entry = error->dev;
1535
1536 for (i = 0; i < errors_logged; i++, dev_entry++) {
1537 ipr_err_separator;
1538
1539 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1540 ipr_log_ext_vpd(&dev_entry->vpd);
1541
1542 ipr_err("-----New Device Information-----\n");
1543 ipr_log_ext_vpd(&dev_entry->new_vpd);
1544
1545 ipr_err("Cache Directory Card Information:\n");
1546 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1547
1548 ipr_err("Adapter Card Information:\n");
1549 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1550 }
1551 }
1552
1553 /**
1554 * ipr_log_sis64_config_error - Log a device error.
1555 * @ioa_cfg: ioa config struct
1556 * @hostrcb: hostrcb struct
1557 *
1558 * Return value:
1559 * none
1560 **/
1561 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1562 struct ipr_hostrcb *hostrcb)
1563 {
1564 int errors_logged, i;
1565 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1566 struct ipr_hostrcb_type_23_error *error;
1567 char buffer[IPR_MAX_RES_PATH_LENGTH];
1568
1569 error = &hostrcb->hcam.u.error64.u.type_23_error;
1570 errors_logged = be32_to_cpu(error->errors_logged);
1571
1572 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1573 be32_to_cpu(error->errors_detected), errors_logged);
1574
1575 dev_entry = error->dev;
1576
1577 for (i = 0; i < errors_logged; i++, dev_entry++) {
1578 ipr_err_separator;
1579
1580 ipr_err("Device %d : %s", i + 1,
1581 ipr_format_res_path(dev_entry->res_path, buffer,
1582 sizeof(buffer)));
1583 ipr_log_ext_vpd(&dev_entry->vpd);
1584
1585 ipr_err("-----New Device Information-----\n");
1586 ipr_log_ext_vpd(&dev_entry->new_vpd);
1587
1588 ipr_err("Cache Directory Card Information:\n");
1589 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1590
1591 ipr_err("Adapter Card Information:\n");
1592 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1593 }
1594 }
1595
1596 /**
1597 * ipr_log_config_error - Log a configuration error.
1598 * @ioa_cfg: ioa config struct
1599 * @hostrcb: hostrcb struct
1600 *
1601 * Return value:
1602 * none
1603 **/
1604 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1605 struct ipr_hostrcb *hostrcb)
1606 {
1607 int errors_logged, i;
1608 struct ipr_hostrcb_device_data_entry *dev_entry;
1609 struct ipr_hostrcb_type_03_error *error;
1610
1611 error = &hostrcb->hcam.u.error.u.type_03_error;
1612 errors_logged = be32_to_cpu(error->errors_logged);
1613
1614 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1615 be32_to_cpu(error->errors_detected), errors_logged);
1616
1617 dev_entry = error->dev;
1618
1619 for (i = 0; i < errors_logged; i++, dev_entry++) {
1620 ipr_err_separator;
1621
1622 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1623 ipr_log_vpd(&dev_entry->vpd);
1624
1625 ipr_err("-----New Device Information-----\n");
1626 ipr_log_vpd(&dev_entry->new_vpd);
1627
1628 ipr_err("Cache Directory Card Information:\n");
1629 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1630
1631 ipr_err("Adapter Card Information:\n");
1632 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1633
1634 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1635 be32_to_cpu(dev_entry->ioa_data[0]),
1636 be32_to_cpu(dev_entry->ioa_data[1]),
1637 be32_to_cpu(dev_entry->ioa_data[2]),
1638 be32_to_cpu(dev_entry->ioa_data[3]),
1639 be32_to_cpu(dev_entry->ioa_data[4]));
1640 }
1641 }
1642
1643 /**
1644 * ipr_log_enhanced_array_error - Log an array configuration error.
1645 * @ioa_cfg: ioa config struct
1646 * @hostrcb: hostrcb struct
1647 *
1648 * Return value:
1649 * none
1650 **/
1651 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1652 struct ipr_hostrcb *hostrcb)
1653 {
1654 int i, num_entries;
1655 struct ipr_hostrcb_type_14_error *error;
1656 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1657 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1658
1659 error = &hostrcb->hcam.u.error.u.type_14_error;
1660
1661 ipr_err_separator;
1662
1663 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1664 error->protection_level,
1665 ioa_cfg->host->host_no,
1666 error->last_func_vset_res_addr.bus,
1667 error->last_func_vset_res_addr.target,
1668 error->last_func_vset_res_addr.lun);
1669
1670 ipr_err_separator;
1671
1672 array_entry = error->array_member;
1673 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1674 ARRAY_SIZE(error->array_member));
1675
1676 for (i = 0; i < num_entries; i++, array_entry++) {
1677 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1678 continue;
1679
1680 if (be32_to_cpu(error->exposed_mode_adn) == i)
1681 ipr_err("Exposed Array Member %d:\n", i);
1682 else
1683 ipr_err("Array Member %d:\n", i);
1684
1685 ipr_log_ext_vpd(&array_entry->vpd);
1686 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1687 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1688 "Expected Location");
1689
1690 ipr_err_separator;
1691 }
1692 }
1693
1694 /**
1695 * ipr_log_array_error - Log an array configuration error.
1696 * @ioa_cfg: ioa config struct
1697 * @hostrcb: hostrcb struct
1698 *
1699 * Return value:
1700 * none
1701 **/
1702 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1703 struct ipr_hostrcb *hostrcb)
1704 {
1705 int i;
1706 struct ipr_hostrcb_type_04_error *error;
1707 struct ipr_hostrcb_array_data_entry *array_entry;
1708 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1709
1710 error = &hostrcb->hcam.u.error.u.type_04_error;
1711
1712 ipr_err_separator;
1713
1714 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1715 error->protection_level,
1716 ioa_cfg->host->host_no,
1717 error->last_func_vset_res_addr.bus,
1718 error->last_func_vset_res_addr.target,
1719 error->last_func_vset_res_addr.lun);
1720
1721 ipr_err_separator;
1722
1723 array_entry = error->array_member;
1724
1725 for (i = 0; i < 18; i++) {
1726 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1727 continue;
1728
1729 if (be32_to_cpu(error->exposed_mode_adn) == i)
1730 ipr_err("Exposed Array Member %d:\n", i);
1731 else
1732 ipr_err("Array Member %d:\n", i);
1733
1734 ipr_log_vpd(&array_entry->vpd);
1735
1736 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1737 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1738 "Expected Location");
1739
1740 ipr_err_separator;
1741
1742 if (i == 9)
1743 array_entry = error->array_member2;
1744 else
1745 array_entry++;
1746 }
1747 }
1748
1749 /**
1750 * ipr_log_hex_data - Log additional hex IOA error data.
1751 * @ioa_cfg: ioa config struct
1752 * @data: IOA error data
1753 * @len: data length
1754 *
1755 * Return value:
1756 * none
1757 **/
1758 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1759 {
1760 int i;
1761
1762 if (len == 0)
1763 return;
1764
1765 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1766 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1767
1768 for (i = 0; i < len / 4; i += 4) {
1769 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1770 be32_to_cpu(data[i]),
1771 be32_to_cpu(data[i+1]),
1772 be32_to_cpu(data[i+2]),
1773 be32_to_cpu(data[i+3]));
1774 }
1775 }
1776
1777 /**
1778 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1779 * @ioa_cfg: ioa config struct
1780 * @hostrcb: hostrcb struct
1781 *
1782 * Return value:
1783 * none
1784 **/
1785 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1786 struct ipr_hostrcb *hostrcb)
1787 {
1788 struct ipr_hostrcb_type_17_error *error;
1789
1790 if (ioa_cfg->sis64)
1791 error = &hostrcb->hcam.u.error64.u.type_17_error;
1792 else
1793 error = &hostrcb->hcam.u.error.u.type_17_error;
1794
1795 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1796 strim(error->failure_reason);
1797
1798 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1799 be32_to_cpu(hostrcb->hcam.u.error.prc));
1800 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1801 ipr_log_hex_data(ioa_cfg, error->data,
1802 be32_to_cpu(hostrcb->hcam.length) -
1803 (offsetof(struct ipr_hostrcb_error, u) +
1804 offsetof(struct ipr_hostrcb_type_17_error, data)));
1805 }
1806
1807 /**
1808 * ipr_log_dual_ioa_error - Log a dual adapter error.
1809 * @ioa_cfg: ioa config struct
1810 * @hostrcb: hostrcb struct
1811 *
1812 * Return value:
1813 * none
1814 **/
1815 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1816 struct ipr_hostrcb *hostrcb)
1817 {
1818 struct ipr_hostrcb_type_07_error *error;
1819
1820 error = &hostrcb->hcam.u.error.u.type_07_error;
1821 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1822 strim(error->failure_reason);
1823
1824 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1825 be32_to_cpu(hostrcb->hcam.u.error.prc));
1826 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1827 ipr_log_hex_data(ioa_cfg, error->data,
1828 be32_to_cpu(hostrcb->hcam.length) -
1829 (offsetof(struct ipr_hostrcb_error, u) +
1830 offsetof(struct ipr_hostrcb_type_07_error, data)));
1831 }
1832
1833 static const struct {
1834 u8 active;
1835 char *desc;
1836 } path_active_desc[] = {
1837 { IPR_PATH_NO_INFO, "Path" },
1838 { IPR_PATH_ACTIVE, "Active path" },
1839 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1840 };
1841
1842 static const struct {
1843 u8 state;
1844 char *desc;
1845 } path_state_desc[] = {
1846 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1847 { IPR_PATH_HEALTHY, "is healthy" },
1848 { IPR_PATH_DEGRADED, "is degraded" },
1849 { IPR_PATH_FAILED, "is failed" }
1850 };
1851
1852 /**
1853 * ipr_log_fabric_path - Log a fabric path error
1854 * @hostrcb: hostrcb struct
1855 * @fabric: fabric descriptor
1856 *
1857 * Return value:
1858 * none
1859 **/
1860 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1861 struct ipr_hostrcb_fabric_desc *fabric)
1862 {
1863 int i, j;
1864 u8 path_state = fabric->path_state;
1865 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1866 u8 state = path_state & IPR_PATH_STATE_MASK;
1867
1868 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1869 if (path_active_desc[i].active != active)
1870 continue;
1871
1872 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1873 if (path_state_desc[j].state != state)
1874 continue;
1875
1876 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1877 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1878 path_active_desc[i].desc, path_state_desc[j].desc,
1879 fabric->ioa_port);
1880 } else if (fabric->cascaded_expander == 0xff) {
1881 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1882 path_active_desc[i].desc, path_state_desc[j].desc,
1883 fabric->ioa_port, fabric->phy);
1884 } else if (fabric->phy == 0xff) {
1885 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1886 path_active_desc[i].desc, path_state_desc[j].desc,
1887 fabric->ioa_port, fabric->cascaded_expander);
1888 } else {
1889 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1890 path_active_desc[i].desc, path_state_desc[j].desc,
1891 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1892 }
1893 return;
1894 }
1895 }
1896
1897 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1898 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1899 }
1900
1901 /**
1902 * ipr_log64_fabric_path - Log a fabric path error
1903 * @hostrcb: hostrcb struct
1904 * @fabric: fabric descriptor
1905 *
1906 * Return value:
1907 * none
1908 **/
1909 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1910 struct ipr_hostrcb64_fabric_desc *fabric)
1911 {
1912 int i, j;
1913 u8 path_state = fabric->path_state;
1914 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1915 u8 state = path_state & IPR_PATH_STATE_MASK;
1916 char buffer[IPR_MAX_RES_PATH_LENGTH];
1917
1918 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1919 if (path_active_desc[i].active != active)
1920 continue;
1921
1922 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1923 if (path_state_desc[j].state != state)
1924 continue;
1925
1926 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
1927 path_active_desc[i].desc, path_state_desc[j].desc,
1928 ipr_format_res_path(fabric->res_path, buffer,
1929 sizeof(buffer)));
1930 return;
1931 }
1932 }
1933
1934 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
1935 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer)));
1936 }
1937
1938 static const struct {
1939 u8 type;
1940 char *desc;
1941 } path_type_desc[] = {
1942 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1943 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1944 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1945 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1946 };
1947
1948 static const struct {
1949 u8 status;
1950 char *desc;
1951 } path_status_desc[] = {
1952 { IPR_PATH_CFG_NO_PROB, "Functional" },
1953 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1954 { IPR_PATH_CFG_FAILED, "Failed" },
1955 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1956 { IPR_PATH_NOT_DETECTED, "Missing" },
1957 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1958 };
1959
1960 static const char *link_rate[] = {
1961 "unknown",
1962 "disabled",
1963 "phy reset problem",
1964 "spinup hold",
1965 "port selector",
1966 "unknown",
1967 "unknown",
1968 "unknown",
1969 "1.5Gbps",
1970 "3.0Gbps",
1971 "unknown",
1972 "unknown",
1973 "unknown",
1974 "unknown",
1975 "unknown",
1976 "unknown"
1977 };
1978
1979 /**
1980 * ipr_log_path_elem - Log a fabric path element.
1981 * @hostrcb: hostrcb struct
1982 * @cfg: fabric path element struct
1983 *
1984 * Return value:
1985 * none
1986 **/
1987 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1988 struct ipr_hostrcb_config_element *cfg)
1989 {
1990 int i, j;
1991 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1992 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1993
1994 if (type == IPR_PATH_CFG_NOT_EXIST)
1995 return;
1996
1997 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1998 if (path_type_desc[i].type != type)
1999 continue;
2000
2001 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2002 if (path_status_desc[j].status != status)
2003 continue;
2004
2005 if (type == IPR_PATH_CFG_IOA_PORT) {
2006 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2007 path_status_desc[j].desc, path_type_desc[i].desc,
2008 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2009 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2010 } else {
2011 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2012 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2013 path_status_desc[j].desc, path_type_desc[i].desc,
2014 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2015 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2016 } else if (cfg->cascaded_expander == 0xff) {
2017 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2018 "WWN=%08X%08X\n", path_status_desc[j].desc,
2019 path_type_desc[i].desc, cfg->phy,
2020 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2021 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2022 } else if (cfg->phy == 0xff) {
2023 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2024 "WWN=%08X%08X\n", path_status_desc[j].desc,
2025 path_type_desc[i].desc, cfg->cascaded_expander,
2026 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2027 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2028 } else {
2029 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2030 "WWN=%08X%08X\n", path_status_desc[j].desc,
2031 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2032 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2033 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2034 }
2035 }
2036 return;
2037 }
2038 }
2039
2040 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2041 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2042 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2043 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2044 }
2045
2046 /**
2047 * ipr_log64_path_elem - Log a fabric path element.
2048 * @hostrcb: hostrcb struct
2049 * @cfg: fabric path element struct
2050 *
2051 * Return value:
2052 * none
2053 **/
2054 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2055 struct ipr_hostrcb64_config_element *cfg)
2056 {
2057 int i, j;
2058 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2059 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2060 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2061 char buffer[IPR_MAX_RES_PATH_LENGTH];
2062
2063 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2064 return;
2065
2066 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2067 if (path_type_desc[i].type != type)
2068 continue;
2069
2070 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2071 if (path_status_desc[j].status != status)
2072 continue;
2073
2074 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2075 path_status_desc[j].desc, path_type_desc[i].desc,
2076 ipr_format_res_path(cfg->res_path, buffer,
2077 sizeof(buffer)),
2078 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2079 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2080 return;
2081 }
2082 }
2083 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2084 "WWN=%08X%08X\n", cfg->type_status,
2085 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)),
2086 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2087 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2088 }
2089
2090 /**
2091 * ipr_log_fabric_error - Log a fabric error.
2092 * @ioa_cfg: ioa config struct
2093 * @hostrcb: hostrcb struct
2094 *
2095 * Return value:
2096 * none
2097 **/
2098 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2099 struct ipr_hostrcb *hostrcb)
2100 {
2101 struct ipr_hostrcb_type_20_error *error;
2102 struct ipr_hostrcb_fabric_desc *fabric;
2103 struct ipr_hostrcb_config_element *cfg;
2104 int i, add_len;
2105
2106 error = &hostrcb->hcam.u.error.u.type_20_error;
2107 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2108 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2109
2110 add_len = be32_to_cpu(hostrcb->hcam.length) -
2111 (offsetof(struct ipr_hostrcb_error, u) +
2112 offsetof(struct ipr_hostrcb_type_20_error, desc));
2113
2114 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2115 ipr_log_fabric_path(hostrcb, fabric);
2116 for_each_fabric_cfg(fabric, cfg)
2117 ipr_log_path_elem(hostrcb, cfg);
2118
2119 add_len -= be16_to_cpu(fabric->length);
2120 fabric = (struct ipr_hostrcb_fabric_desc *)
2121 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2122 }
2123
2124 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2125 }
2126
2127 /**
2128 * ipr_log_sis64_array_error - Log a sis64 array error.
2129 * @ioa_cfg: ioa config struct
2130 * @hostrcb: hostrcb struct
2131 *
2132 * Return value:
2133 * none
2134 **/
2135 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_hostrcb *hostrcb)
2137 {
2138 int i, num_entries;
2139 struct ipr_hostrcb_type_24_error *error;
2140 struct ipr_hostrcb64_array_data_entry *array_entry;
2141 char buffer[IPR_MAX_RES_PATH_LENGTH];
2142 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2143
2144 error = &hostrcb->hcam.u.error64.u.type_24_error;
2145
2146 ipr_err_separator;
2147
2148 ipr_err("RAID %s Array Configuration: %s\n",
2149 error->protection_level,
2150 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer)));
2151
2152 ipr_err_separator;
2153
2154 array_entry = error->array_member;
2155 num_entries = min_t(u32, error->num_entries,
2156 ARRAY_SIZE(error->array_member));
2157
2158 for (i = 0; i < num_entries; i++, array_entry++) {
2159
2160 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2161 continue;
2162
2163 if (error->exposed_mode_adn == i)
2164 ipr_err("Exposed Array Member %d:\n", i);
2165 else
2166 ipr_err("Array Member %d:\n", i);
2167
2168 ipr_err("Array Member %d:\n", i);
2169 ipr_log_ext_vpd(&array_entry->vpd);
2170 ipr_err("Current Location: %s\n",
2171 ipr_format_res_path(array_entry->res_path, buffer,
2172 sizeof(buffer)));
2173 ipr_err("Expected Location: %s\n",
2174 ipr_format_res_path(array_entry->expected_res_path,
2175 buffer, sizeof(buffer)));
2176
2177 ipr_err_separator;
2178 }
2179 }
2180
2181 /**
2182 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2183 * @ioa_cfg: ioa config struct
2184 * @hostrcb: hostrcb struct
2185 *
2186 * Return value:
2187 * none
2188 **/
2189 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2190 struct ipr_hostrcb *hostrcb)
2191 {
2192 struct ipr_hostrcb_type_30_error *error;
2193 struct ipr_hostrcb64_fabric_desc *fabric;
2194 struct ipr_hostrcb64_config_element *cfg;
2195 int i, add_len;
2196
2197 error = &hostrcb->hcam.u.error64.u.type_30_error;
2198
2199 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2200 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2201
2202 add_len = be32_to_cpu(hostrcb->hcam.length) -
2203 (offsetof(struct ipr_hostrcb64_error, u) +
2204 offsetof(struct ipr_hostrcb_type_30_error, desc));
2205
2206 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2207 ipr_log64_fabric_path(hostrcb, fabric);
2208 for_each_fabric_cfg(fabric, cfg)
2209 ipr_log64_path_elem(hostrcb, cfg);
2210
2211 add_len -= be16_to_cpu(fabric->length);
2212 fabric = (struct ipr_hostrcb64_fabric_desc *)
2213 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2214 }
2215
2216 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2217 }
2218
2219 /**
2220 * ipr_log_generic_error - Log an adapter error.
2221 * @ioa_cfg: ioa config struct
2222 * @hostrcb: hostrcb struct
2223 *
2224 * Return value:
2225 * none
2226 **/
2227 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2228 struct ipr_hostrcb *hostrcb)
2229 {
2230 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2231 be32_to_cpu(hostrcb->hcam.length));
2232 }
2233
2234 /**
2235 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2236 * @ioasc: IOASC
2237 *
2238 * This function will return the index of into the ipr_error_table
2239 * for the specified IOASC. If the IOASC is not in the table,
2240 * 0 will be returned, which points to the entry used for unknown errors.
2241 *
2242 * Return value:
2243 * index into the ipr_error_table
2244 **/
2245 static u32 ipr_get_error(u32 ioasc)
2246 {
2247 int i;
2248
2249 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2250 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2251 return i;
2252
2253 return 0;
2254 }
2255
2256 /**
2257 * ipr_handle_log_data - Log an adapter error.
2258 * @ioa_cfg: ioa config struct
2259 * @hostrcb: hostrcb struct
2260 *
2261 * This function logs an adapter error to the system.
2262 *
2263 * Return value:
2264 * none
2265 **/
2266 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2267 struct ipr_hostrcb *hostrcb)
2268 {
2269 u32 ioasc;
2270 int error_index;
2271
2272 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2273 return;
2274
2275 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2276 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2277
2278 if (ioa_cfg->sis64)
2279 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2280 else
2281 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2282
2283 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2284 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2285 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2286 scsi_report_bus_reset(ioa_cfg->host,
2287 hostrcb->hcam.u.error.fd_res_addr.bus);
2288 }
2289
2290 error_index = ipr_get_error(ioasc);
2291
2292 if (!ipr_error_table[error_index].log_hcam)
2293 return;
2294
2295 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2296
2297 /* Set indication we have logged an error */
2298 ioa_cfg->errors_logged++;
2299
2300 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2301 return;
2302 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2303 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2304
2305 switch (hostrcb->hcam.overlay_id) {
2306 case IPR_HOST_RCB_OVERLAY_ID_2:
2307 ipr_log_cache_error(ioa_cfg, hostrcb);
2308 break;
2309 case IPR_HOST_RCB_OVERLAY_ID_3:
2310 ipr_log_config_error(ioa_cfg, hostrcb);
2311 break;
2312 case IPR_HOST_RCB_OVERLAY_ID_4:
2313 case IPR_HOST_RCB_OVERLAY_ID_6:
2314 ipr_log_array_error(ioa_cfg, hostrcb);
2315 break;
2316 case IPR_HOST_RCB_OVERLAY_ID_7:
2317 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2318 break;
2319 case IPR_HOST_RCB_OVERLAY_ID_12:
2320 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2321 break;
2322 case IPR_HOST_RCB_OVERLAY_ID_13:
2323 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2324 break;
2325 case IPR_HOST_RCB_OVERLAY_ID_14:
2326 case IPR_HOST_RCB_OVERLAY_ID_16:
2327 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2328 break;
2329 case IPR_HOST_RCB_OVERLAY_ID_17:
2330 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2331 break;
2332 case IPR_HOST_RCB_OVERLAY_ID_20:
2333 ipr_log_fabric_error(ioa_cfg, hostrcb);
2334 break;
2335 case IPR_HOST_RCB_OVERLAY_ID_23:
2336 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2337 break;
2338 case IPR_HOST_RCB_OVERLAY_ID_24:
2339 case IPR_HOST_RCB_OVERLAY_ID_26:
2340 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2341 break;
2342 case IPR_HOST_RCB_OVERLAY_ID_30:
2343 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2344 break;
2345 case IPR_HOST_RCB_OVERLAY_ID_1:
2346 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2347 default:
2348 ipr_log_generic_error(ioa_cfg, hostrcb);
2349 break;
2350 }
2351 }
2352
2353 /**
2354 * ipr_process_error - Op done function for an adapter error log.
2355 * @ipr_cmd: ipr command struct
2356 *
2357 * This function is the op done function for an error log host
2358 * controlled async from the adapter. It will log the error and
2359 * send the HCAM back to the adapter.
2360 *
2361 * Return value:
2362 * none
2363 **/
2364 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2365 {
2366 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2367 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2368 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2369 u32 fd_ioasc;
2370
2371 if (ioa_cfg->sis64)
2372 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2373 else
2374 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2375
2376 list_del(&hostrcb->queue);
2377 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2378
2379 if (!ioasc) {
2380 ipr_handle_log_data(ioa_cfg, hostrcb);
2381 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2382 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2383 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2384 dev_err(&ioa_cfg->pdev->dev,
2385 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2386 }
2387
2388 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2389 }
2390
2391 /**
2392 * ipr_timeout - An internally generated op has timed out.
2393 * @ipr_cmd: ipr command struct
2394 *
2395 * This function blocks host requests and initiates an
2396 * adapter reset.
2397 *
2398 * Return value:
2399 * none
2400 **/
2401 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2402 {
2403 unsigned long lock_flags = 0;
2404 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2405
2406 ENTER;
2407 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2408
2409 ioa_cfg->errors_logged++;
2410 dev_err(&ioa_cfg->pdev->dev,
2411 "Adapter being reset due to command timeout.\n");
2412
2413 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2414 ioa_cfg->sdt_state = GET_DUMP;
2415
2416 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2417 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2418
2419 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2420 LEAVE;
2421 }
2422
2423 /**
2424 * ipr_oper_timeout - Adapter timed out transitioning to operational
2425 * @ipr_cmd: ipr command struct
2426 *
2427 * This function blocks host requests and initiates an
2428 * adapter reset.
2429 *
2430 * Return value:
2431 * none
2432 **/
2433 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2434 {
2435 unsigned long lock_flags = 0;
2436 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2437
2438 ENTER;
2439 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2440
2441 ioa_cfg->errors_logged++;
2442 dev_err(&ioa_cfg->pdev->dev,
2443 "Adapter timed out transitioning to operational.\n");
2444
2445 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2446 ioa_cfg->sdt_state = GET_DUMP;
2447
2448 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2449 if (ipr_fastfail)
2450 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2451 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2452 }
2453
2454 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2455 LEAVE;
2456 }
2457
2458 /**
2459 * ipr_reset_reload - Reset/Reload the IOA
2460 * @ioa_cfg: ioa config struct
2461 * @shutdown_type: shutdown type
2462 *
2463 * This function resets the adapter and re-initializes it.
2464 * This function assumes that all new host commands have been stopped.
2465 * Return value:
2466 * SUCCESS / FAILED
2467 **/
2468 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
2469 enum ipr_shutdown_type shutdown_type)
2470 {
2471 if (!ioa_cfg->in_reset_reload)
2472 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
2473
2474 spin_unlock_irq(ioa_cfg->host->host_lock);
2475 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2476 spin_lock_irq(ioa_cfg->host->host_lock);
2477
2478 /* If we got hit with a host reset while we were already resetting
2479 the adapter for some reason, and the reset failed. */
2480 if (ioa_cfg->ioa_is_dead) {
2481 ipr_trace;
2482 return FAILED;
2483 }
2484
2485 return SUCCESS;
2486 }
2487
2488 /**
2489 * ipr_find_ses_entry - Find matching SES in SES table
2490 * @res: resource entry struct of SES
2491 *
2492 * Return value:
2493 * pointer to SES table entry / NULL on failure
2494 **/
2495 static const struct ipr_ses_table_entry *
2496 ipr_find_ses_entry(struct ipr_resource_entry *res)
2497 {
2498 int i, j, matches;
2499 struct ipr_std_inq_vpids *vpids;
2500 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2501
2502 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2503 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2504 if (ste->compare_product_id_byte[j] == 'X') {
2505 vpids = &res->std_inq_data.vpids;
2506 if (vpids->product_id[j] == ste->product_id[j])
2507 matches++;
2508 else
2509 break;
2510 } else
2511 matches++;
2512 }
2513
2514 if (matches == IPR_PROD_ID_LEN)
2515 return ste;
2516 }
2517
2518 return NULL;
2519 }
2520
2521 /**
2522 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2523 * @ioa_cfg: ioa config struct
2524 * @bus: SCSI bus
2525 * @bus_width: bus width
2526 *
2527 * Return value:
2528 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2529 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2530 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2531 * max 160MHz = max 320MB/sec).
2532 **/
2533 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2534 {
2535 struct ipr_resource_entry *res;
2536 const struct ipr_ses_table_entry *ste;
2537 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2538
2539 /* Loop through each config table entry in the config table buffer */
2540 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2541 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2542 continue;
2543
2544 if (bus != res->bus)
2545 continue;
2546
2547 if (!(ste = ipr_find_ses_entry(res)))
2548 continue;
2549
2550 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2551 }
2552
2553 return max_xfer_rate;
2554 }
2555
2556 /**
2557 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2558 * @ioa_cfg: ioa config struct
2559 * @max_delay: max delay in micro-seconds to wait
2560 *
2561 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2562 *
2563 * Return value:
2564 * 0 on success / other on failure
2565 **/
2566 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2567 {
2568 volatile u32 pcii_reg;
2569 int delay = 1;
2570
2571 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2572 while (delay < max_delay) {
2573 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2574
2575 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2576 return 0;
2577
2578 /* udelay cannot be used if delay is more than a few milliseconds */
2579 if ((delay / 1000) > MAX_UDELAY_MS)
2580 mdelay(delay / 1000);
2581 else
2582 udelay(delay);
2583
2584 delay += delay;
2585 }
2586 return -EIO;
2587 }
2588
2589 /**
2590 * ipr_get_sis64_dump_data_section - Dump IOA memory
2591 * @ioa_cfg: ioa config struct
2592 * @start_addr: adapter address to dump
2593 * @dest: destination kernel buffer
2594 * @length_in_words: length to dump in 4 byte words
2595 *
2596 * Return value:
2597 * 0 on success
2598 **/
2599 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2600 u32 start_addr,
2601 __be32 *dest, u32 length_in_words)
2602 {
2603 int i;
2604
2605 for (i = 0; i < length_in_words; i++) {
2606 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2607 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2608 dest++;
2609 }
2610
2611 return 0;
2612 }
2613
2614 /**
2615 * ipr_get_ldump_data_section - Dump IOA memory
2616 * @ioa_cfg: ioa config struct
2617 * @start_addr: adapter address to dump
2618 * @dest: destination kernel buffer
2619 * @length_in_words: length to dump in 4 byte words
2620 *
2621 * Return value:
2622 * 0 on success / -EIO on failure
2623 **/
2624 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2625 u32 start_addr,
2626 __be32 *dest, u32 length_in_words)
2627 {
2628 volatile u32 temp_pcii_reg;
2629 int i, delay = 0;
2630
2631 if (ioa_cfg->sis64)
2632 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2633 dest, length_in_words);
2634
2635 /* Write IOA interrupt reg starting LDUMP state */
2636 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2637 ioa_cfg->regs.set_uproc_interrupt_reg32);
2638
2639 /* Wait for IO debug acknowledge */
2640 if (ipr_wait_iodbg_ack(ioa_cfg,
2641 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2642 dev_err(&ioa_cfg->pdev->dev,
2643 "IOA dump long data transfer timeout\n");
2644 return -EIO;
2645 }
2646
2647 /* Signal LDUMP interlocked - clear IO debug ack */
2648 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2649 ioa_cfg->regs.clr_interrupt_reg);
2650
2651 /* Write Mailbox with starting address */
2652 writel(start_addr, ioa_cfg->ioa_mailbox);
2653
2654 /* Signal address valid - clear IOA Reset alert */
2655 writel(IPR_UPROCI_RESET_ALERT,
2656 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2657
2658 for (i = 0; i < length_in_words; i++) {
2659 /* Wait for IO debug acknowledge */
2660 if (ipr_wait_iodbg_ack(ioa_cfg,
2661 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2662 dev_err(&ioa_cfg->pdev->dev,
2663 "IOA dump short data transfer timeout\n");
2664 return -EIO;
2665 }
2666
2667 /* Read data from mailbox and increment destination pointer */
2668 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2669 dest++;
2670
2671 /* For all but the last word of data, signal data received */
2672 if (i < (length_in_words - 1)) {
2673 /* Signal dump data received - Clear IO debug Ack */
2674 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2675 ioa_cfg->regs.clr_interrupt_reg);
2676 }
2677 }
2678
2679 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2680 writel(IPR_UPROCI_RESET_ALERT,
2681 ioa_cfg->regs.set_uproc_interrupt_reg32);
2682
2683 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2684 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2685
2686 /* Signal dump data received - Clear IO debug Ack */
2687 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2688 ioa_cfg->regs.clr_interrupt_reg);
2689
2690 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2691 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2692 temp_pcii_reg =
2693 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2694
2695 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2696 return 0;
2697
2698 udelay(10);
2699 delay += 10;
2700 }
2701
2702 return 0;
2703 }
2704
2705 #ifdef CONFIG_SCSI_IPR_DUMP
2706 /**
2707 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2708 * @ioa_cfg: ioa config struct
2709 * @pci_address: adapter address
2710 * @length: length of data to copy
2711 *
2712 * Copy data from PCI adapter to kernel buffer.
2713 * Note: length MUST be a 4 byte multiple
2714 * Return value:
2715 * 0 on success / other on failure
2716 **/
2717 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2718 unsigned long pci_address, u32 length)
2719 {
2720 int bytes_copied = 0;
2721 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2722 __be32 *page;
2723 unsigned long lock_flags = 0;
2724 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2725
2726 if (ioa_cfg->sis64)
2727 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2728 else
2729 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2730
2731 while (bytes_copied < length &&
2732 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2733 if (ioa_dump->page_offset >= PAGE_SIZE ||
2734 ioa_dump->page_offset == 0) {
2735 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2736
2737 if (!page) {
2738 ipr_trace;
2739 return bytes_copied;
2740 }
2741
2742 ioa_dump->page_offset = 0;
2743 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2744 ioa_dump->next_page_index++;
2745 } else
2746 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2747
2748 rem_len = length - bytes_copied;
2749 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2750 cur_len = min(rem_len, rem_page_len);
2751
2752 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2753 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2754 rc = -EIO;
2755 } else {
2756 rc = ipr_get_ldump_data_section(ioa_cfg,
2757 pci_address + bytes_copied,
2758 &page[ioa_dump->page_offset / 4],
2759 (cur_len / sizeof(u32)));
2760 }
2761 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2762
2763 if (!rc) {
2764 ioa_dump->page_offset += cur_len;
2765 bytes_copied += cur_len;
2766 } else {
2767 ipr_trace;
2768 break;
2769 }
2770 schedule();
2771 }
2772
2773 return bytes_copied;
2774 }
2775
2776 /**
2777 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2778 * @hdr: dump entry header struct
2779 *
2780 * Return value:
2781 * nothing
2782 **/
2783 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2784 {
2785 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2786 hdr->num_elems = 1;
2787 hdr->offset = sizeof(*hdr);
2788 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2789 }
2790
2791 /**
2792 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2793 * @ioa_cfg: ioa config struct
2794 * @driver_dump: driver dump struct
2795 *
2796 * Return value:
2797 * nothing
2798 **/
2799 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2800 struct ipr_driver_dump *driver_dump)
2801 {
2802 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2803
2804 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2805 driver_dump->ioa_type_entry.hdr.len =
2806 sizeof(struct ipr_dump_ioa_type_entry) -
2807 sizeof(struct ipr_dump_entry_header);
2808 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2809 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2810 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2811 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2812 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2813 ucode_vpd->minor_release[1];
2814 driver_dump->hdr.num_entries++;
2815 }
2816
2817 /**
2818 * ipr_dump_version_data - Fill in the driver version in the dump.
2819 * @ioa_cfg: ioa config struct
2820 * @driver_dump: driver dump struct
2821 *
2822 * Return value:
2823 * nothing
2824 **/
2825 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2826 struct ipr_driver_dump *driver_dump)
2827 {
2828 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2829 driver_dump->version_entry.hdr.len =
2830 sizeof(struct ipr_dump_version_entry) -
2831 sizeof(struct ipr_dump_entry_header);
2832 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2833 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2834 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2835 driver_dump->hdr.num_entries++;
2836 }
2837
2838 /**
2839 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2840 * @ioa_cfg: ioa config struct
2841 * @driver_dump: driver dump struct
2842 *
2843 * Return value:
2844 * nothing
2845 **/
2846 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2847 struct ipr_driver_dump *driver_dump)
2848 {
2849 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2850 driver_dump->trace_entry.hdr.len =
2851 sizeof(struct ipr_dump_trace_entry) -
2852 sizeof(struct ipr_dump_entry_header);
2853 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2854 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2855 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2856 driver_dump->hdr.num_entries++;
2857 }
2858
2859 /**
2860 * ipr_dump_location_data - Fill in the IOA location in the dump.
2861 * @ioa_cfg: ioa config struct
2862 * @driver_dump: driver dump struct
2863 *
2864 * Return value:
2865 * nothing
2866 **/
2867 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2868 struct ipr_driver_dump *driver_dump)
2869 {
2870 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2871 driver_dump->location_entry.hdr.len =
2872 sizeof(struct ipr_dump_location_entry) -
2873 sizeof(struct ipr_dump_entry_header);
2874 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2875 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2876 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2877 driver_dump->hdr.num_entries++;
2878 }
2879
2880 /**
2881 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2882 * @ioa_cfg: ioa config struct
2883 * @dump: dump struct
2884 *
2885 * Return value:
2886 * nothing
2887 **/
2888 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2889 {
2890 unsigned long start_addr, sdt_word;
2891 unsigned long lock_flags = 0;
2892 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2893 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2894 u32 num_entries, max_num_entries, start_off, end_off;
2895 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
2896 struct ipr_sdt *sdt;
2897 int valid = 1;
2898 int i;
2899
2900 ENTER;
2901
2902 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2903
2904 if (ioa_cfg->sdt_state != READ_DUMP) {
2905 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2906 return;
2907 }
2908
2909 if (ioa_cfg->sis64) {
2910 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2911 ssleep(IPR_DUMP_DELAY_SECONDS);
2912 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2913 }
2914
2915 start_addr = readl(ioa_cfg->ioa_mailbox);
2916
2917 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
2918 dev_err(&ioa_cfg->pdev->dev,
2919 "Invalid dump table format: %lx\n", start_addr);
2920 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2921 return;
2922 }
2923
2924 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2925
2926 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2927
2928 /* Initialize the overall dump header */
2929 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2930 driver_dump->hdr.num_entries = 1;
2931 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2932 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2933 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2934 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2935
2936 ipr_dump_version_data(ioa_cfg, driver_dump);
2937 ipr_dump_location_data(ioa_cfg, driver_dump);
2938 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2939 ipr_dump_trace_data(ioa_cfg, driver_dump);
2940
2941 /* Update dump_header */
2942 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2943
2944 /* IOA Dump entry */
2945 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2946 ioa_dump->hdr.len = 0;
2947 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2948 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2949
2950 /* First entries in sdt are actually a list of dump addresses and
2951 lengths to gather the real dump data. sdt represents the pointer
2952 to the ioa generated dump table. Dump data will be extracted based
2953 on entries in this table */
2954 sdt = &ioa_dump->sdt;
2955
2956 if (ioa_cfg->sis64) {
2957 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
2958 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2959 } else {
2960 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
2961 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2962 }
2963
2964 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
2965 (max_num_entries * sizeof(struct ipr_sdt_entry));
2966 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2967 bytes_to_copy / sizeof(__be32));
2968
2969 /* Smart Dump table is ready to use and the first entry is valid */
2970 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2971 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
2972 dev_err(&ioa_cfg->pdev->dev,
2973 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2974 rc, be32_to_cpu(sdt->hdr.state));
2975 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2976 ioa_cfg->sdt_state = DUMP_OBTAINED;
2977 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2978 return;
2979 }
2980
2981 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2982
2983 if (num_entries > max_num_entries)
2984 num_entries = max_num_entries;
2985
2986 /* Update dump length to the actual data to be copied */
2987 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
2988 if (ioa_cfg->sis64)
2989 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
2990 else
2991 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
2992
2993 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2994
2995 for (i = 0; i < num_entries; i++) {
2996 if (ioa_dump->hdr.len > max_dump_size) {
2997 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2998 break;
2999 }
3000
3001 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3002 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3003 if (ioa_cfg->sis64)
3004 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3005 else {
3006 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3007 end_off = be32_to_cpu(sdt->entry[i].end_token);
3008
3009 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3010 bytes_to_copy = end_off - start_off;
3011 else
3012 valid = 0;
3013 }
3014 if (valid) {
3015 if (bytes_to_copy > max_dump_size) {
3016 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3017 continue;
3018 }
3019
3020 /* Copy data from adapter to driver buffers */
3021 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3022 bytes_to_copy);
3023
3024 ioa_dump->hdr.len += bytes_copied;
3025
3026 if (bytes_copied != bytes_to_copy) {
3027 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3028 break;
3029 }
3030 }
3031 }
3032 }
3033
3034 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3035
3036 /* Update dump_header */
3037 driver_dump->hdr.len += ioa_dump->hdr.len;
3038 wmb();
3039 ioa_cfg->sdt_state = DUMP_OBTAINED;
3040 LEAVE;
3041 }
3042
3043 #else
3044 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3045 #endif
3046
3047 /**
3048 * ipr_release_dump - Free adapter dump memory
3049 * @kref: kref struct
3050 *
3051 * Return value:
3052 * nothing
3053 **/
3054 static void ipr_release_dump(struct kref *kref)
3055 {
3056 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3057 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3058 unsigned long lock_flags = 0;
3059 int i;
3060
3061 ENTER;
3062 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3063 ioa_cfg->dump = NULL;
3064 ioa_cfg->sdt_state = INACTIVE;
3065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3066
3067 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3068 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3069
3070 vfree(dump->ioa_dump.ioa_data);
3071 kfree(dump);
3072 LEAVE;
3073 }
3074
3075 /**
3076 * ipr_worker_thread - Worker thread
3077 * @work: ioa config struct
3078 *
3079 * Called at task level from a work thread. This function takes care
3080 * of adding and removing device from the mid-layer as configuration
3081 * changes are detected by the adapter.
3082 *
3083 * Return value:
3084 * nothing
3085 **/
3086 static void ipr_worker_thread(struct work_struct *work)
3087 {
3088 unsigned long lock_flags;
3089 struct ipr_resource_entry *res;
3090 struct scsi_device *sdev;
3091 struct ipr_dump *dump;
3092 struct ipr_ioa_cfg *ioa_cfg =
3093 container_of(work, struct ipr_ioa_cfg, work_q);
3094 u8 bus, target, lun;
3095 int did_work;
3096
3097 ENTER;
3098 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3099
3100 if (ioa_cfg->sdt_state == READ_DUMP) {
3101 dump = ioa_cfg->dump;
3102 if (!dump) {
3103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3104 return;
3105 }
3106 kref_get(&dump->kref);
3107 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3108 ipr_get_ioa_dump(ioa_cfg, dump);
3109 kref_put(&dump->kref, ipr_release_dump);
3110
3111 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3112 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3113 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3114 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3115 return;
3116 }
3117
3118 restart:
3119 do {
3120 did_work = 0;
3121 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3122 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3123 return;
3124 }
3125
3126 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3127 if (res->del_from_ml && res->sdev) {
3128 did_work = 1;
3129 sdev = res->sdev;
3130 if (!scsi_device_get(sdev)) {
3131 if (!res->add_to_ml)
3132 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3133 else
3134 res->del_from_ml = 0;
3135 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3136 scsi_remove_device(sdev);
3137 scsi_device_put(sdev);
3138 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3139 }
3140 break;
3141 }
3142 }
3143 } while(did_work);
3144
3145 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3146 if (res->add_to_ml) {
3147 bus = res->bus;
3148 target = res->target;
3149 lun = res->lun;
3150 res->add_to_ml = 0;
3151 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3152 scsi_add_device(ioa_cfg->host, bus, target, lun);
3153 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3154 goto restart;
3155 }
3156 }
3157
3158 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3159 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3160 LEAVE;
3161 }
3162
3163 #ifdef CONFIG_SCSI_IPR_TRACE
3164 /**
3165 * ipr_read_trace - Dump the adapter trace
3166 * @filp: open sysfs file
3167 * @kobj: kobject struct
3168 * @bin_attr: bin_attribute struct
3169 * @buf: buffer
3170 * @off: offset
3171 * @count: buffer size
3172 *
3173 * Return value:
3174 * number of bytes printed to buffer
3175 **/
3176 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3177 struct bin_attribute *bin_attr,
3178 char *buf, loff_t off, size_t count)
3179 {
3180 struct device *dev = container_of(kobj, struct device, kobj);
3181 struct Scsi_Host *shost = class_to_shost(dev);
3182 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3183 unsigned long lock_flags = 0;
3184 ssize_t ret;
3185
3186 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3187 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3188 IPR_TRACE_SIZE);
3189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3190
3191 return ret;
3192 }
3193
3194 static struct bin_attribute ipr_trace_attr = {
3195 .attr = {
3196 .name = "trace",
3197 .mode = S_IRUGO,
3198 },
3199 .size = 0,
3200 .read = ipr_read_trace,
3201 };
3202 #endif
3203
3204 /**
3205 * ipr_show_fw_version - Show the firmware version
3206 * @dev: class device struct
3207 * @buf: buffer
3208 *
3209 * Return value:
3210 * number of bytes printed to buffer
3211 **/
3212 static ssize_t ipr_show_fw_version(struct device *dev,
3213 struct device_attribute *attr, char *buf)
3214 {
3215 struct Scsi_Host *shost = class_to_shost(dev);
3216 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3217 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3218 unsigned long lock_flags = 0;
3219 int len;
3220
3221 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3222 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3223 ucode_vpd->major_release, ucode_vpd->card_type,
3224 ucode_vpd->minor_release[0],
3225 ucode_vpd->minor_release[1]);
3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3227 return len;
3228 }
3229
3230 static struct device_attribute ipr_fw_version_attr = {
3231 .attr = {
3232 .name = "fw_version",
3233 .mode = S_IRUGO,
3234 },
3235 .show = ipr_show_fw_version,
3236 };
3237
3238 /**
3239 * ipr_show_log_level - Show the adapter's error logging level
3240 * @dev: class device struct
3241 * @buf: buffer
3242 *
3243 * Return value:
3244 * number of bytes printed to buffer
3245 **/
3246 static ssize_t ipr_show_log_level(struct device *dev,
3247 struct device_attribute *attr, char *buf)
3248 {
3249 struct Scsi_Host *shost = class_to_shost(dev);
3250 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3251 unsigned long lock_flags = 0;
3252 int len;
3253
3254 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3255 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3256 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3257 return len;
3258 }
3259
3260 /**
3261 * ipr_store_log_level - Change the adapter's error logging level
3262 * @dev: class device struct
3263 * @buf: buffer
3264 *
3265 * Return value:
3266 * number of bytes printed to buffer
3267 **/
3268 static ssize_t ipr_store_log_level(struct device *dev,
3269 struct device_attribute *attr,
3270 const char *buf, size_t count)
3271 {
3272 struct Scsi_Host *shost = class_to_shost(dev);
3273 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3274 unsigned long lock_flags = 0;
3275
3276 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3277 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3278 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3279 return strlen(buf);
3280 }
3281
3282 static struct device_attribute ipr_log_level_attr = {
3283 .attr = {
3284 .name = "log_level",
3285 .mode = S_IRUGO | S_IWUSR,
3286 },
3287 .show = ipr_show_log_level,
3288 .store = ipr_store_log_level
3289 };
3290
3291 /**
3292 * ipr_store_diagnostics - IOA Diagnostics interface
3293 * @dev: device struct
3294 * @buf: buffer
3295 * @count: buffer size
3296 *
3297 * This function will reset the adapter and wait a reasonable
3298 * amount of time for any errors that the adapter might log.
3299 *
3300 * Return value:
3301 * count on success / other on failure
3302 **/
3303 static ssize_t ipr_store_diagnostics(struct device *dev,
3304 struct device_attribute *attr,
3305 const char *buf, size_t count)
3306 {
3307 struct Scsi_Host *shost = class_to_shost(dev);
3308 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3309 unsigned long lock_flags = 0;
3310 int rc = count;
3311
3312 if (!capable(CAP_SYS_ADMIN))
3313 return -EACCES;
3314
3315 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3316 while(ioa_cfg->in_reset_reload) {
3317 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3318 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3319 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3320 }
3321
3322 ioa_cfg->errors_logged = 0;
3323 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3324
3325 if (ioa_cfg->in_reset_reload) {
3326 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3327 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3328
3329 /* Wait for a second for any errors to be logged */
3330 msleep(1000);
3331 } else {
3332 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3333 return -EIO;
3334 }
3335
3336 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3337 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3338 rc = -EIO;
3339 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3340
3341 return rc;
3342 }
3343
3344 static struct device_attribute ipr_diagnostics_attr = {
3345 .attr = {
3346 .name = "run_diagnostics",
3347 .mode = S_IWUSR,
3348 },
3349 .store = ipr_store_diagnostics
3350 };
3351
3352 /**
3353 * ipr_show_adapter_state - Show the adapter's state
3354 * @class_dev: device struct
3355 * @buf: buffer
3356 *
3357 * Return value:
3358 * number of bytes printed to buffer
3359 **/
3360 static ssize_t ipr_show_adapter_state(struct device *dev,
3361 struct device_attribute *attr, char *buf)
3362 {
3363 struct Scsi_Host *shost = class_to_shost(dev);
3364 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3365 unsigned long lock_flags = 0;
3366 int len;
3367
3368 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3369 if (ioa_cfg->ioa_is_dead)
3370 len = snprintf(buf, PAGE_SIZE, "offline\n");
3371 else
3372 len = snprintf(buf, PAGE_SIZE, "online\n");
3373 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3374 return len;
3375 }
3376
3377 /**
3378 * ipr_store_adapter_state - Change adapter state
3379 * @dev: device struct
3380 * @buf: buffer
3381 * @count: buffer size
3382 *
3383 * This function will change the adapter's state.
3384 *
3385 * Return value:
3386 * count on success / other on failure
3387 **/
3388 static ssize_t ipr_store_adapter_state(struct device *dev,
3389 struct device_attribute *attr,
3390 const char *buf, size_t count)
3391 {
3392 struct Scsi_Host *shost = class_to_shost(dev);
3393 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3394 unsigned long lock_flags;
3395 int result = count;
3396
3397 if (!capable(CAP_SYS_ADMIN))
3398 return -EACCES;
3399
3400 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3401 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
3402 ioa_cfg->ioa_is_dead = 0;
3403 ioa_cfg->reset_retries = 0;
3404 ioa_cfg->in_ioa_bringdown = 0;
3405 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3406 }
3407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3408 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3409
3410 return result;
3411 }
3412
3413 static struct device_attribute ipr_ioa_state_attr = {
3414 .attr = {
3415 .name = "online_state",
3416 .mode = S_IRUGO | S_IWUSR,
3417 },
3418 .show = ipr_show_adapter_state,
3419 .store = ipr_store_adapter_state
3420 };
3421
3422 /**
3423 * ipr_store_reset_adapter - Reset the adapter
3424 * @dev: device struct
3425 * @buf: buffer
3426 * @count: buffer size
3427 *
3428 * This function will reset the adapter.
3429 *
3430 * Return value:
3431 * count on success / other on failure
3432 **/
3433 static ssize_t ipr_store_reset_adapter(struct device *dev,
3434 struct device_attribute *attr,
3435 const char *buf, size_t count)
3436 {
3437 struct Scsi_Host *shost = class_to_shost(dev);
3438 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3439 unsigned long lock_flags;
3440 int result = count;
3441
3442 if (!capable(CAP_SYS_ADMIN))
3443 return -EACCES;
3444
3445 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3446 if (!ioa_cfg->in_reset_reload)
3447 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3448 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3449 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3450
3451 return result;
3452 }
3453
3454 static struct device_attribute ipr_ioa_reset_attr = {
3455 .attr = {
3456 .name = "reset_host",
3457 .mode = S_IWUSR,
3458 },
3459 .store = ipr_store_reset_adapter
3460 };
3461
3462 /**
3463 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3464 * @buf_len: buffer length
3465 *
3466 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3467 * list to use for microcode download
3468 *
3469 * Return value:
3470 * pointer to sglist / NULL on failure
3471 **/
3472 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3473 {
3474 int sg_size, order, bsize_elem, num_elem, i, j;
3475 struct ipr_sglist *sglist;
3476 struct scatterlist *scatterlist;
3477 struct page *page;
3478
3479 /* Get the minimum size per scatter/gather element */
3480 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3481
3482 /* Get the actual size per element */
3483 order = get_order(sg_size);
3484
3485 /* Determine the actual number of bytes per element */
3486 bsize_elem = PAGE_SIZE * (1 << order);
3487
3488 /* Determine the actual number of sg entries needed */
3489 if (buf_len % bsize_elem)
3490 num_elem = (buf_len / bsize_elem) + 1;
3491 else
3492 num_elem = buf_len / bsize_elem;
3493
3494 /* Allocate a scatter/gather list for the DMA */
3495 sglist = kzalloc(sizeof(struct ipr_sglist) +
3496 (sizeof(struct scatterlist) * (num_elem - 1)),
3497 GFP_KERNEL);
3498
3499 if (sglist == NULL) {
3500 ipr_trace;
3501 return NULL;
3502 }
3503
3504 scatterlist = sglist->scatterlist;
3505 sg_init_table(scatterlist, num_elem);
3506
3507 sglist->order = order;
3508 sglist->num_sg = num_elem;
3509
3510 /* Allocate a bunch of sg elements */
3511 for (i = 0; i < num_elem; i++) {
3512 page = alloc_pages(GFP_KERNEL, order);
3513 if (!page) {
3514 ipr_trace;
3515
3516 /* Free up what we already allocated */
3517 for (j = i - 1; j >= 0; j--)
3518 __free_pages(sg_page(&scatterlist[j]), order);
3519 kfree(sglist);
3520 return NULL;
3521 }
3522
3523 sg_set_page(&scatterlist[i], page, 0, 0);
3524 }
3525
3526 return sglist;
3527 }
3528
3529 /**
3530 * ipr_free_ucode_buffer - Frees a microcode download buffer
3531 * @p_dnld: scatter/gather list pointer
3532 *
3533 * Free a DMA'able ucode download buffer previously allocated with
3534 * ipr_alloc_ucode_buffer
3535 *
3536 * Return value:
3537 * nothing
3538 **/
3539 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3540 {
3541 int i;
3542
3543 for (i = 0; i < sglist->num_sg; i++)
3544 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3545
3546 kfree(sglist);
3547 }
3548
3549 /**
3550 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3551 * @sglist: scatter/gather list pointer
3552 * @buffer: buffer pointer
3553 * @len: buffer length
3554 *
3555 * Copy a microcode image from a user buffer into a buffer allocated by
3556 * ipr_alloc_ucode_buffer
3557 *
3558 * Return value:
3559 * 0 on success / other on failure
3560 **/
3561 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3562 u8 *buffer, u32 len)
3563 {
3564 int bsize_elem, i, result = 0;
3565 struct scatterlist *scatterlist;
3566 void *kaddr;
3567
3568 /* Determine the actual number of bytes per element */
3569 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3570
3571 scatterlist = sglist->scatterlist;
3572
3573 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3574 struct page *page = sg_page(&scatterlist[i]);
3575
3576 kaddr = kmap(page);
3577 memcpy(kaddr, buffer, bsize_elem);
3578 kunmap(page);
3579
3580 scatterlist[i].length = bsize_elem;
3581
3582 if (result != 0) {
3583 ipr_trace;
3584 return result;
3585 }
3586 }
3587
3588 if (len % bsize_elem) {
3589 struct page *page = sg_page(&scatterlist[i]);
3590
3591 kaddr = kmap(page);
3592 memcpy(kaddr, buffer, len % bsize_elem);
3593 kunmap(page);
3594
3595 scatterlist[i].length = len % bsize_elem;
3596 }
3597
3598 sglist->buffer_len = len;
3599 return result;
3600 }
3601
3602 /**
3603 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3604 * @ipr_cmd: ipr command struct
3605 * @sglist: scatter/gather list
3606 *
3607 * Builds a microcode download IOA data list (IOADL).
3608 *
3609 **/
3610 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3611 struct ipr_sglist *sglist)
3612 {
3613 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3614 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3615 struct scatterlist *scatterlist = sglist->scatterlist;
3616 int i;
3617
3618 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3619 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3620 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3621
3622 ioarcb->ioadl_len =
3623 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3624 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3625 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3626 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3627 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3628 }
3629
3630 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3631 }
3632
3633 /**
3634 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3635 * @ipr_cmd: ipr command struct
3636 * @sglist: scatter/gather list
3637 *
3638 * Builds a microcode download IOA data list (IOADL).
3639 *
3640 **/
3641 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3642 struct ipr_sglist *sglist)
3643 {
3644 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3645 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3646 struct scatterlist *scatterlist = sglist->scatterlist;
3647 int i;
3648
3649 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3650 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3651 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3652
3653 ioarcb->ioadl_len =
3654 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3655
3656 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3657 ioadl[i].flags_and_data_len =
3658 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3659 ioadl[i].address =
3660 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3661 }
3662
3663 ioadl[i-1].flags_and_data_len |=
3664 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3665 }
3666
3667 /**
3668 * ipr_update_ioa_ucode - Update IOA's microcode
3669 * @ioa_cfg: ioa config struct
3670 * @sglist: scatter/gather list
3671 *
3672 * Initiate an adapter reset to update the IOA's microcode
3673 *
3674 * Return value:
3675 * 0 on success / -EIO on failure
3676 **/
3677 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3678 struct ipr_sglist *sglist)
3679 {
3680 unsigned long lock_flags;
3681
3682 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3683 while(ioa_cfg->in_reset_reload) {
3684 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3685 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3686 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3687 }
3688
3689 if (ioa_cfg->ucode_sglist) {
3690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3691 dev_err(&ioa_cfg->pdev->dev,
3692 "Microcode download already in progress\n");
3693 return -EIO;
3694 }
3695
3696 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3697 sglist->num_sg, DMA_TO_DEVICE);
3698
3699 if (!sglist->num_dma_sg) {
3700 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3701 dev_err(&ioa_cfg->pdev->dev,
3702 "Failed to map microcode download buffer!\n");
3703 return -EIO;
3704 }
3705
3706 ioa_cfg->ucode_sglist = sglist;
3707 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3709 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3710
3711 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3712 ioa_cfg->ucode_sglist = NULL;
3713 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3714 return 0;
3715 }
3716
3717 /**
3718 * ipr_store_update_fw - Update the firmware on the adapter
3719 * @class_dev: device struct
3720 * @buf: buffer
3721 * @count: buffer size
3722 *
3723 * This function will update the firmware on the adapter.
3724 *
3725 * Return value:
3726 * count on success / other on failure
3727 **/
3728 static ssize_t ipr_store_update_fw(struct device *dev,
3729 struct device_attribute *attr,
3730 const char *buf, size_t count)
3731 {
3732 struct Scsi_Host *shost = class_to_shost(dev);
3733 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3734 struct ipr_ucode_image_header *image_hdr;
3735 const struct firmware *fw_entry;
3736 struct ipr_sglist *sglist;
3737 char fname[100];
3738 char *src;
3739 int len, result, dnld_size;
3740
3741 if (!capable(CAP_SYS_ADMIN))
3742 return -EACCES;
3743
3744 len = snprintf(fname, 99, "%s", buf);
3745 fname[len-1] = '\0';
3746
3747 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3748 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3749 return -EIO;
3750 }
3751
3752 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3753
3754 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3755 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3756 sglist = ipr_alloc_ucode_buffer(dnld_size);
3757
3758 if (!sglist) {
3759 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3760 release_firmware(fw_entry);
3761 return -ENOMEM;
3762 }
3763
3764 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3765
3766 if (result) {
3767 dev_err(&ioa_cfg->pdev->dev,
3768 "Microcode buffer copy to DMA buffer failed\n");
3769 goto out;
3770 }
3771
3772 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
3773
3774 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3775
3776 if (!result)
3777 result = count;
3778 out:
3779 ipr_free_ucode_buffer(sglist);
3780 release_firmware(fw_entry);
3781 return result;
3782 }
3783
3784 static struct device_attribute ipr_update_fw_attr = {
3785 .attr = {
3786 .name = "update_fw",
3787 .mode = S_IWUSR,
3788 },
3789 .store = ipr_store_update_fw
3790 };
3791
3792 /**
3793 * ipr_show_fw_type - Show the adapter's firmware type.
3794 * @dev: class device struct
3795 * @buf: buffer
3796 *
3797 * Return value:
3798 * number of bytes printed to buffer
3799 **/
3800 static ssize_t ipr_show_fw_type(struct device *dev,
3801 struct device_attribute *attr, char *buf)
3802 {
3803 struct Scsi_Host *shost = class_to_shost(dev);
3804 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3805 unsigned long lock_flags = 0;
3806 int len;
3807
3808 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3809 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
3810 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3811 return len;
3812 }
3813
3814 static struct device_attribute ipr_ioa_fw_type_attr = {
3815 .attr = {
3816 .name = "fw_type",
3817 .mode = S_IRUGO,
3818 },
3819 .show = ipr_show_fw_type
3820 };
3821
3822 static struct device_attribute *ipr_ioa_attrs[] = {
3823 &ipr_fw_version_attr,
3824 &ipr_log_level_attr,
3825 &ipr_diagnostics_attr,
3826 &ipr_ioa_state_attr,
3827 &ipr_ioa_reset_attr,
3828 &ipr_update_fw_attr,
3829 &ipr_ioa_fw_type_attr,
3830 NULL,
3831 };
3832
3833 #ifdef CONFIG_SCSI_IPR_DUMP
3834 /**
3835 * ipr_read_dump - Dump the adapter
3836 * @filp: open sysfs file
3837 * @kobj: kobject struct
3838 * @bin_attr: bin_attribute struct
3839 * @buf: buffer
3840 * @off: offset
3841 * @count: buffer size
3842 *
3843 * Return value:
3844 * number of bytes printed to buffer
3845 **/
3846 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
3847 struct bin_attribute *bin_attr,
3848 char *buf, loff_t off, size_t count)
3849 {
3850 struct device *cdev = container_of(kobj, struct device, kobj);
3851 struct Scsi_Host *shost = class_to_shost(cdev);
3852 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3853 struct ipr_dump *dump;
3854 unsigned long lock_flags = 0;
3855 char *src;
3856 int len, sdt_end;
3857 size_t rc = count;
3858
3859 if (!capable(CAP_SYS_ADMIN))
3860 return -EACCES;
3861
3862 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3863 dump = ioa_cfg->dump;
3864
3865 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3866 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3867 return 0;
3868 }
3869 kref_get(&dump->kref);
3870 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3871
3872 if (off > dump->driver_dump.hdr.len) {
3873 kref_put(&dump->kref, ipr_release_dump);
3874 return 0;
3875 }
3876
3877 if (off + count > dump->driver_dump.hdr.len) {
3878 count = dump->driver_dump.hdr.len - off;
3879 rc = count;
3880 }
3881
3882 if (count && off < sizeof(dump->driver_dump)) {
3883 if (off + count > sizeof(dump->driver_dump))
3884 len = sizeof(dump->driver_dump) - off;
3885 else
3886 len = count;
3887 src = (u8 *)&dump->driver_dump + off;
3888 memcpy(buf, src, len);
3889 buf += len;
3890 off += len;
3891 count -= len;
3892 }
3893
3894 off -= sizeof(dump->driver_dump);
3895
3896 if (ioa_cfg->sis64)
3897 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
3898 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
3899 sizeof(struct ipr_sdt_entry));
3900 else
3901 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
3902 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
3903
3904 if (count && off < sdt_end) {
3905 if (off + count > sdt_end)
3906 len = sdt_end - off;
3907 else
3908 len = count;
3909 src = (u8 *)&dump->ioa_dump + off;
3910 memcpy(buf, src, len);
3911 buf += len;
3912 off += len;
3913 count -= len;
3914 }
3915
3916 off -= sdt_end;
3917
3918 while (count) {
3919 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3920 len = PAGE_ALIGN(off) - off;
3921 else
3922 len = count;
3923 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3924 src += off & ~PAGE_MASK;
3925 memcpy(buf, src, len);
3926 buf += len;
3927 off += len;
3928 count -= len;
3929 }
3930
3931 kref_put(&dump->kref, ipr_release_dump);
3932 return rc;
3933 }
3934
3935 /**
3936 * ipr_alloc_dump - Prepare for adapter dump
3937 * @ioa_cfg: ioa config struct
3938 *
3939 * Return value:
3940 * 0 on success / other on failure
3941 **/
3942 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3943 {
3944 struct ipr_dump *dump;
3945 __be32 **ioa_data;
3946 unsigned long lock_flags = 0;
3947
3948 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3949
3950 if (!dump) {
3951 ipr_err("Dump memory allocation failed\n");
3952 return -ENOMEM;
3953 }
3954
3955 if (ioa_cfg->sis64)
3956 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
3957 else
3958 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
3959
3960 if (!ioa_data) {
3961 ipr_err("Dump memory allocation failed\n");
3962 kfree(dump);
3963 return -ENOMEM;
3964 }
3965
3966 dump->ioa_dump.ioa_data = ioa_data;
3967
3968 kref_init(&dump->kref);
3969 dump->ioa_cfg = ioa_cfg;
3970
3971 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3972
3973 if (INACTIVE != ioa_cfg->sdt_state) {
3974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3975 vfree(dump->ioa_dump.ioa_data);
3976 kfree(dump);
3977 return 0;
3978 }
3979
3980 ioa_cfg->dump = dump;
3981 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3982 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3983 ioa_cfg->dump_taken = 1;
3984 schedule_work(&ioa_cfg->work_q);
3985 }
3986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3987
3988 return 0;
3989 }
3990
3991 /**
3992 * ipr_free_dump - Free adapter dump memory
3993 * @ioa_cfg: ioa config struct
3994 *
3995 * Return value:
3996 * 0 on success / other on failure
3997 **/
3998 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3999 {
4000 struct ipr_dump *dump;
4001 unsigned long lock_flags = 0;
4002
4003 ENTER;
4004
4005 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4006 dump = ioa_cfg->dump;
4007 if (!dump) {
4008 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4009 return 0;
4010 }
4011
4012 ioa_cfg->dump = NULL;
4013 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4014
4015 kref_put(&dump->kref, ipr_release_dump);
4016
4017 LEAVE;
4018 return 0;
4019 }
4020
4021 /**
4022 * ipr_write_dump - Setup dump state of adapter
4023 * @filp: open sysfs file
4024 * @kobj: kobject struct
4025 * @bin_attr: bin_attribute struct
4026 * @buf: buffer
4027 * @off: offset
4028 * @count: buffer size
4029 *
4030 * Return value:
4031 * number of bytes printed to buffer
4032 **/
4033 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4034 struct bin_attribute *bin_attr,
4035 char *buf, loff_t off, size_t count)
4036 {
4037 struct device *cdev = container_of(kobj, struct device, kobj);
4038 struct Scsi_Host *shost = class_to_shost(cdev);
4039 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4040 int rc;
4041
4042 if (!capable(CAP_SYS_ADMIN))
4043 return -EACCES;
4044
4045 if (buf[0] == '1')
4046 rc = ipr_alloc_dump(ioa_cfg);
4047 else if (buf[0] == '0')
4048 rc = ipr_free_dump(ioa_cfg);
4049 else
4050 return -EINVAL;
4051
4052 if (rc)
4053 return rc;
4054 else
4055 return count;
4056 }
4057
4058 static struct bin_attribute ipr_dump_attr = {
4059 .attr = {
4060 .name = "dump",
4061 .mode = S_IRUSR | S_IWUSR,
4062 },
4063 .size = 0,
4064 .read = ipr_read_dump,
4065 .write = ipr_write_dump
4066 };
4067 #else
4068 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4069 #endif
4070
4071 /**
4072 * ipr_change_queue_depth - Change the device's queue depth
4073 * @sdev: scsi device struct
4074 * @qdepth: depth to set
4075 * @reason: calling context
4076 *
4077 * Return value:
4078 * actual depth set
4079 **/
4080 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4081 int reason)
4082 {
4083 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4084 struct ipr_resource_entry *res;
4085 unsigned long lock_flags = 0;
4086
4087 if (reason != SCSI_QDEPTH_DEFAULT)
4088 return -EOPNOTSUPP;
4089
4090 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4091 res = (struct ipr_resource_entry *)sdev->hostdata;
4092
4093 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4094 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4095 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4096
4097 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4098 return sdev->queue_depth;
4099 }
4100
4101 /**
4102 * ipr_change_queue_type - Change the device's queue type
4103 * @dsev: scsi device struct
4104 * @tag_type: type of tags to use
4105 *
4106 * Return value:
4107 * actual queue type set
4108 **/
4109 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4110 {
4111 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4112 struct ipr_resource_entry *res;
4113 unsigned long lock_flags = 0;
4114
4115 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4116 res = (struct ipr_resource_entry *)sdev->hostdata;
4117
4118 if (res) {
4119 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4120 /*
4121 * We don't bother quiescing the device here since the
4122 * adapter firmware does it for us.
4123 */
4124 scsi_set_tag_type(sdev, tag_type);
4125
4126 if (tag_type)
4127 scsi_activate_tcq(sdev, sdev->queue_depth);
4128 else
4129 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4130 } else
4131 tag_type = 0;
4132 } else
4133 tag_type = 0;
4134
4135 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4136 return tag_type;
4137 }
4138
4139 /**
4140 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4141 * @dev: device struct
4142 * @attr: device attribute structure
4143 * @buf: buffer
4144 *
4145 * Return value:
4146 * number of bytes printed to buffer
4147 **/
4148 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4149 {
4150 struct scsi_device *sdev = to_scsi_device(dev);
4151 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4152 struct ipr_resource_entry *res;
4153 unsigned long lock_flags = 0;
4154 ssize_t len = -ENXIO;
4155
4156 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4157 res = (struct ipr_resource_entry *)sdev->hostdata;
4158 if (res)
4159 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4160 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4161 return len;
4162 }
4163
4164 static struct device_attribute ipr_adapter_handle_attr = {
4165 .attr = {
4166 .name = "adapter_handle",
4167 .mode = S_IRUSR,
4168 },
4169 .show = ipr_show_adapter_handle
4170 };
4171
4172 /**
4173 * ipr_show_resource_path - Show the resource path or the resource address for
4174 * this device.
4175 * @dev: device struct
4176 * @attr: device attribute structure
4177 * @buf: buffer
4178 *
4179 * Return value:
4180 * number of bytes printed to buffer
4181 **/
4182 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4183 {
4184 struct scsi_device *sdev = to_scsi_device(dev);
4185 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4186 struct ipr_resource_entry *res;
4187 unsigned long lock_flags = 0;
4188 ssize_t len = -ENXIO;
4189 char buffer[IPR_MAX_RES_PATH_LENGTH];
4190
4191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4192 res = (struct ipr_resource_entry *)sdev->hostdata;
4193 if (res && ioa_cfg->sis64)
4194 len = snprintf(buf, PAGE_SIZE, "%s\n",
4195 ipr_format_res_path(res->res_path, buffer,
4196 sizeof(buffer)));
4197 else if (res)
4198 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4199 res->bus, res->target, res->lun);
4200
4201 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4202 return len;
4203 }
4204
4205 static struct device_attribute ipr_resource_path_attr = {
4206 .attr = {
4207 .name = "resource_path",
4208 .mode = S_IRUGO,
4209 },
4210 .show = ipr_show_resource_path
4211 };
4212
4213 /**
4214 * ipr_show_device_id - Show the device_id for this device.
4215 * @dev: device struct
4216 * @attr: device attribute structure
4217 * @buf: buffer
4218 *
4219 * Return value:
4220 * number of bytes printed to buffer
4221 **/
4222 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4223 {
4224 struct scsi_device *sdev = to_scsi_device(dev);
4225 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4226 struct ipr_resource_entry *res;
4227 unsigned long lock_flags = 0;
4228 ssize_t len = -ENXIO;
4229
4230 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4231 res = (struct ipr_resource_entry *)sdev->hostdata;
4232 if (res && ioa_cfg->sis64)
4233 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id);
4234 else if (res)
4235 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4236
4237 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4238 return len;
4239 }
4240
4241 static struct device_attribute ipr_device_id_attr = {
4242 .attr = {
4243 .name = "device_id",
4244 .mode = S_IRUGO,
4245 },
4246 .show = ipr_show_device_id
4247 };
4248
4249 /**
4250 * ipr_show_resource_type - Show the resource type for this device.
4251 * @dev: device struct
4252 * @attr: device attribute structure
4253 * @buf: buffer
4254 *
4255 * Return value:
4256 * number of bytes printed to buffer
4257 **/
4258 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4259 {
4260 struct scsi_device *sdev = to_scsi_device(dev);
4261 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4262 struct ipr_resource_entry *res;
4263 unsigned long lock_flags = 0;
4264 ssize_t len = -ENXIO;
4265
4266 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4267 res = (struct ipr_resource_entry *)sdev->hostdata;
4268
4269 if (res)
4270 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4271
4272 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4273 return len;
4274 }
4275
4276 static struct device_attribute ipr_resource_type_attr = {
4277 .attr = {
4278 .name = "resource_type",
4279 .mode = S_IRUGO,
4280 },
4281 .show = ipr_show_resource_type
4282 };
4283
4284 static struct device_attribute *ipr_dev_attrs[] = {
4285 &ipr_adapter_handle_attr,
4286 &ipr_resource_path_attr,
4287 &ipr_device_id_attr,
4288 &ipr_resource_type_attr,
4289 NULL,
4290 };
4291
4292 /**
4293 * ipr_biosparam - Return the HSC mapping
4294 * @sdev: scsi device struct
4295 * @block_device: block device pointer
4296 * @capacity: capacity of the device
4297 * @parm: Array containing returned HSC values.
4298 *
4299 * This function generates the HSC parms that fdisk uses.
4300 * We want to make sure we return something that places partitions
4301 * on 4k boundaries for best performance with the IOA.
4302 *
4303 * Return value:
4304 * 0 on success
4305 **/
4306 static int ipr_biosparam(struct scsi_device *sdev,
4307 struct block_device *block_device,
4308 sector_t capacity, int *parm)
4309 {
4310 int heads, sectors;
4311 sector_t cylinders;
4312
4313 heads = 128;
4314 sectors = 32;
4315
4316 cylinders = capacity;
4317 sector_div(cylinders, (128 * 32));
4318
4319 /* return result */
4320 parm[0] = heads;
4321 parm[1] = sectors;
4322 parm[2] = cylinders;
4323
4324 return 0;
4325 }
4326
4327 /**
4328 * ipr_find_starget - Find target based on bus/target.
4329 * @starget: scsi target struct
4330 *
4331 * Return value:
4332 * resource entry pointer if found / NULL if not found
4333 **/
4334 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4335 {
4336 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4337 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4338 struct ipr_resource_entry *res;
4339
4340 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4341 if ((res->bus == starget->channel) &&
4342 (res->target == starget->id) &&
4343 (res->lun == 0)) {
4344 return res;
4345 }
4346 }
4347
4348 return NULL;
4349 }
4350
4351 static struct ata_port_info sata_port_info;
4352
4353 /**
4354 * ipr_target_alloc - Prepare for commands to a SCSI target
4355 * @starget: scsi target struct
4356 *
4357 * If the device is a SATA device, this function allocates an
4358 * ATA port with libata, else it does nothing.
4359 *
4360 * Return value:
4361 * 0 on success / non-0 on failure
4362 **/
4363 static int ipr_target_alloc(struct scsi_target *starget)
4364 {
4365 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4366 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4367 struct ipr_sata_port *sata_port;
4368 struct ata_port *ap;
4369 struct ipr_resource_entry *res;
4370 unsigned long lock_flags;
4371
4372 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4373 res = ipr_find_starget(starget);
4374 starget->hostdata = NULL;
4375
4376 if (res && ipr_is_gata(res)) {
4377 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4378 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4379 if (!sata_port)
4380 return -ENOMEM;
4381
4382 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4383 if (ap) {
4384 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4385 sata_port->ioa_cfg = ioa_cfg;
4386 sata_port->ap = ap;
4387 sata_port->res = res;
4388
4389 res->sata_port = sata_port;
4390 ap->private_data = sata_port;
4391 starget->hostdata = sata_port;
4392 } else {
4393 kfree(sata_port);
4394 return -ENOMEM;
4395 }
4396 }
4397 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4398
4399 return 0;
4400 }
4401
4402 /**
4403 * ipr_target_destroy - Destroy a SCSI target
4404 * @starget: scsi target struct
4405 *
4406 * If the device was a SATA device, this function frees the libata
4407 * ATA port, else it does nothing.
4408 *
4409 **/
4410 static void ipr_target_destroy(struct scsi_target *starget)
4411 {
4412 struct ipr_sata_port *sata_port = starget->hostdata;
4413 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4414 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4415
4416 if (ioa_cfg->sis64) {
4417 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4418 clear_bit(starget->id, ioa_cfg->array_ids);
4419 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4420 clear_bit(starget->id, ioa_cfg->vset_ids);
4421 else if (starget->channel == 0)
4422 clear_bit(starget->id, ioa_cfg->target_ids);
4423 }
4424
4425 if (sata_port) {
4426 starget->hostdata = NULL;
4427 ata_sas_port_destroy(sata_port->ap);
4428 kfree(sata_port);
4429 }
4430 }
4431
4432 /**
4433 * ipr_find_sdev - Find device based on bus/target/lun.
4434 * @sdev: scsi device struct
4435 *
4436 * Return value:
4437 * resource entry pointer if found / NULL if not found
4438 **/
4439 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4440 {
4441 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4442 struct ipr_resource_entry *res;
4443
4444 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4445 if ((res->bus == sdev->channel) &&
4446 (res->target == sdev->id) &&
4447 (res->lun == sdev->lun))
4448 return res;
4449 }
4450
4451 return NULL;
4452 }
4453
4454 /**
4455 * ipr_slave_destroy - Unconfigure a SCSI device
4456 * @sdev: scsi device struct
4457 *
4458 * Return value:
4459 * nothing
4460 **/
4461 static void ipr_slave_destroy(struct scsi_device *sdev)
4462 {
4463 struct ipr_resource_entry *res;
4464 struct ipr_ioa_cfg *ioa_cfg;
4465 unsigned long lock_flags = 0;
4466
4467 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4468
4469 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4470 res = (struct ipr_resource_entry *) sdev->hostdata;
4471 if (res) {
4472 if (res->sata_port)
4473 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4474 sdev->hostdata = NULL;
4475 res->sdev = NULL;
4476 res->sata_port = NULL;
4477 }
4478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4479 }
4480
4481 /**
4482 * ipr_slave_configure - Configure a SCSI device
4483 * @sdev: scsi device struct
4484 *
4485 * This function configures the specified scsi device.
4486 *
4487 * Return value:
4488 * 0 on success
4489 **/
4490 static int ipr_slave_configure(struct scsi_device *sdev)
4491 {
4492 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4493 struct ipr_resource_entry *res;
4494 struct ata_port *ap = NULL;
4495 unsigned long lock_flags = 0;
4496 char buffer[IPR_MAX_RES_PATH_LENGTH];
4497
4498 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4499 res = sdev->hostdata;
4500 if (res) {
4501 if (ipr_is_af_dasd_device(res))
4502 sdev->type = TYPE_RAID;
4503 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4504 sdev->scsi_level = 4;
4505 sdev->no_uld_attach = 1;
4506 }
4507 if (ipr_is_vset_device(res)) {
4508 blk_queue_rq_timeout(sdev->request_queue,
4509 IPR_VSET_RW_TIMEOUT);
4510 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4511 }
4512 if (ipr_is_gata(res) && res->sata_port)
4513 ap = res->sata_port->ap;
4514 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4515
4516 if (ap) {
4517 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
4518 ata_sas_slave_configure(sdev, ap);
4519 } else
4520 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4521 if (ioa_cfg->sis64)
4522 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4523 ipr_format_res_path(res->res_path, buffer,
4524 sizeof(buffer)));
4525 return 0;
4526 }
4527 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4528 return 0;
4529 }
4530
4531 /**
4532 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4533 * @sdev: scsi device struct
4534 *
4535 * This function initializes an ATA port so that future commands
4536 * sent through queuecommand will work.
4537 *
4538 * Return value:
4539 * 0 on success
4540 **/
4541 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4542 {
4543 struct ipr_sata_port *sata_port = NULL;
4544 int rc = -ENXIO;
4545
4546 ENTER;
4547 if (sdev->sdev_target)
4548 sata_port = sdev->sdev_target->hostdata;
4549 if (sata_port)
4550 rc = ata_sas_port_init(sata_port->ap);
4551 if (rc)
4552 ipr_slave_destroy(sdev);
4553
4554 LEAVE;
4555 return rc;
4556 }
4557
4558 /**
4559 * ipr_slave_alloc - Prepare for commands to a device.
4560 * @sdev: scsi device struct
4561 *
4562 * This function saves a pointer to the resource entry
4563 * in the scsi device struct if the device exists. We
4564 * can then use this pointer in ipr_queuecommand when
4565 * handling new commands.
4566 *
4567 * Return value:
4568 * 0 on success / -ENXIO if device does not exist
4569 **/
4570 static int ipr_slave_alloc(struct scsi_device *sdev)
4571 {
4572 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4573 struct ipr_resource_entry *res;
4574 unsigned long lock_flags;
4575 int rc = -ENXIO;
4576
4577 sdev->hostdata = NULL;
4578
4579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4580
4581 res = ipr_find_sdev(sdev);
4582 if (res) {
4583 res->sdev = sdev;
4584 res->add_to_ml = 0;
4585 res->in_erp = 0;
4586 sdev->hostdata = res;
4587 if (!ipr_is_naca_model(res))
4588 res->needs_sync_complete = 1;
4589 rc = 0;
4590 if (ipr_is_gata(res)) {
4591 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4592 return ipr_ata_slave_alloc(sdev);
4593 }
4594 }
4595
4596 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4597
4598 return rc;
4599 }
4600
4601 /**
4602 * ipr_eh_host_reset - Reset the host adapter
4603 * @scsi_cmd: scsi command struct
4604 *
4605 * Return value:
4606 * SUCCESS / FAILED
4607 **/
4608 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
4609 {
4610 struct ipr_ioa_cfg *ioa_cfg;
4611 int rc;
4612
4613 ENTER;
4614 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4615
4616 dev_err(&ioa_cfg->pdev->dev,
4617 "Adapter being reset as a result of error recovery.\n");
4618
4619 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4620 ioa_cfg->sdt_state = GET_DUMP;
4621
4622 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4623
4624 LEAVE;
4625 return rc;
4626 }
4627
4628 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
4629 {
4630 int rc;
4631
4632 spin_lock_irq(cmd->device->host->host_lock);
4633 rc = __ipr_eh_host_reset(cmd);
4634 spin_unlock_irq(cmd->device->host->host_lock);
4635
4636 return rc;
4637 }
4638
4639 /**
4640 * ipr_device_reset - Reset the device
4641 * @ioa_cfg: ioa config struct
4642 * @res: resource entry struct
4643 *
4644 * This function issues a device reset to the affected device.
4645 * If the device is a SCSI device, a LUN reset will be sent
4646 * to the device first. If that does not work, a target reset
4647 * will be sent. If the device is a SATA device, a PHY reset will
4648 * be sent.
4649 *
4650 * Return value:
4651 * 0 on success / non-zero on failure
4652 **/
4653 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4654 struct ipr_resource_entry *res)
4655 {
4656 struct ipr_cmnd *ipr_cmd;
4657 struct ipr_ioarcb *ioarcb;
4658 struct ipr_cmd_pkt *cmd_pkt;
4659 struct ipr_ioarcb_ata_regs *regs;
4660 u32 ioasc;
4661
4662 ENTER;
4663 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4664 ioarcb = &ipr_cmd->ioarcb;
4665 cmd_pkt = &ioarcb->cmd_pkt;
4666
4667 if (ipr_cmd->ioa_cfg->sis64) {
4668 regs = &ipr_cmd->i.ata_ioadl.regs;
4669 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4670 } else
4671 regs = &ioarcb->u.add_data.u.regs;
4672
4673 ioarcb->res_handle = res->res_handle;
4674 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4675 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4676 if (ipr_is_gata(res)) {
4677 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
4678 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
4679 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4680 }
4681
4682 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4683 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4684 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4685 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4686 if (ipr_cmd->ioa_cfg->sis64)
4687 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4688 sizeof(struct ipr_ioasa_gata));
4689 else
4690 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4691 sizeof(struct ipr_ioasa_gata));
4692 }
4693
4694 LEAVE;
4695 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
4696 }
4697
4698 /**
4699 * ipr_sata_reset - Reset the SATA port
4700 * @link: SATA link to reset
4701 * @classes: class of the attached device
4702 *
4703 * This function issues a SATA phy reset to the affected ATA link.
4704 *
4705 * Return value:
4706 * 0 on success / non-zero on failure
4707 **/
4708 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
4709 unsigned long deadline)
4710 {
4711 struct ipr_sata_port *sata_port = link->ap->private_data;
4712 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4713 struct ipr_resource_entry *res;
4714 unsigned long lock_flags = 0;
4715 int rc = -ENXIO;
4716
4717 ENTER;
4718 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4719 while(ioa_cfg->in_reset_reload) {
4720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4721 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4722 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4723 }
4724
4725 res = sata_port->res;
4726 if (res) {
4727 rc = ipr_device_reset(ioa_cfg, res);
4728 *classes = res->ata_class;
4729 }
4730
4731 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4732 LEAVE;
4733 return rc;
4734 }
4735
4736 /**
4737 * ipr_eh_dev_reset - Reset the device
4738 * @scsi_cmd: scsi command struct
4739 *
4740 * This function issues a device reset to the affected device.
4741 * A LUN reset will be sent to the device first. If that does
4742 * not work, a target reset will be sent.
4743 *
4744 * Return value:
4745 * SUCCESS / FAILED
4746 **/
4747 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
4748 {
4749 struct ipr_cmnd *ipr_cmd;
4750 struct ipr_ioa_cfg *ioa_cfg;
4751 struct ipr_resource_entry *res;
4752 struct ata_port *ap;
4753 int rc = 0;
4754
4755 ENTER;
4756 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4757 res = scsi_cmd->device->hostdata;
4758
4759 if (!res)
4760 return FAILED;
4761
4762 /*
4763 * If we are currently going through reset/reload, return failed. This will force the
4764 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4765 * reset to complete
4766 */
4767 if (ioa_cfg->in_reset_reload)
4768 return FAILED;
4769 if (ioa_cfg->ioa_is_dead)
4770 return FAILED;
4771
4772 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4773 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4774 if (ipr_cmd->scsi_cmd)
4775 ipr_cmd->done = ipr_scsi_eh_done;
4776 if (ipr_cmd->qc)
4777 ipr_cmd->done = ipr_sata_eh_done;
4778 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4779 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4780 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4781 }
4782 }
4783 }
4784
4785 res->resetting_device = 1;
4786 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
4787
4788 if (ipr_is_gata(res) && res->sata_port) {
4789 ap = res->sata_port->ap;
4790 spin_unlock_irq(scsi_cmd->device->host->host_lock);
4791 ata_std_error_handler(ap);
4792 spin_lock_irq(scsi_cmd->device->host->host_lock);
4793
4794 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4795 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4796 rc = -EIO;
4797 break;
4798 }
4799 }
4800 } else
4801 rc = ipr_device_reset(ioa_cfg, res);
4802 res->resetting_device = 0;
4803
4804 LEAVE;
4805 return (rc ? FAILED : SUCCESS);
4806 }
4807
4808 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
4809 {
4810 int rc;
4811
4812 spin_lock_irq(cmd->device->host->host_lock);
4813 rc = __ipr_eh_dev_reset(cmd);
4814 spin_unlock_irq(cmd->device->host->host_lock);
4815
4816 return rc;
4817 }
4818
4819 /**
4820 * ipr_bus_reset_done - Op done function for bus reset.
4821 * @ipr_cmd: ipr command struct
4822 *
4823 * This function is the op done function for a bus reset
4824 *
4825 * Return value:
4826 * none
4827 **/
4828 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
4829 {
4830 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4831 struct ipr_resource_entry *res;
4832
4833 ENTER;
4834 if (!ioa_cfg->sis64)
4835 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4836 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
4837 scsi_report_bus_reset(ioa_cfg->host, res->bus);
4838 break;
4839 }
4840 }
4841
4842 /*
4843 * If abort has not completed, indicate the reset has, else call the
4844 * abort's done function to wake the sleeping eh thread
4845 */
4846 if (ipr_cmd->sibling->sibling)
4847 ipr_cmd->sibling->sibling = NULL;
4848 else
4849 ipr_cmd->sibling->done(ipr_cmd->sibling);
4850
4851 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4852 LEAVE;
4853 }
4854
4855 /**
4856 * ipr_abort_timeout - An abort task has timed out
4857 * @ipr_cmd: ipr command struct
4858 *
4859 * This function handles when an abort task times out. If this
4860 * happens we issue a bus reset since we have resources tied
4861 * up that must be freed before returning to the midlayer.
4862 *
4863 * Return value:
4864 * none
4865 **/
4866 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4867 {
4868 struct ipr_cmnd *reset_cmd;
4869 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4870 struct ipr_cmd_pkt *cmd_pkt;
4871 unsigned long lock_flags = 0;
4872
4873 ENTER;
4874 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4875 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4876 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4877 return;
4878 }
4879
4880 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4881 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4882 ipr_cmd->sibling = reset_cmd;
4883 reset_cmd->sibling = ipr_cmd;
4884 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4885 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4886 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4887 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4888 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4889
4890 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4891 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4892 LEAVE;
4893 }
4894
4895 /**
4896 * ipr_cancel_op - Cancel specified op
4897 * @scsi_cmd: scsi command struct
4898 *
4899 * This function cancels specified op.
4900 *
4901 * Return value:
4902 * SUCCESS / FAILED
4903 **/
4904 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4905 {
4906 struct ipr_cmnd *ipr_cmd;
4907 struct ipr_ioa_cfg *ioa_cfg;
4908 struct ipr_resource_entry *res;
4909 struct ipr_cmd_pkt *cmd_pkt;
4910 u32 ioasc;
4911 int op_found = 0;
4912
4913 ENTER;
4914 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4915 res = scsi_cmd->device->hostdata;
4916
4917 /* If we are currently going through reset/reload, return failed.
4918 * This will force the mid-layer to call ipr_eh_host_reset,
4919 * which will then go to sleep and wait for the reset to complete
4920 */
4921 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4922 return FAILED;
4923 if (!res || !ipr_is_gscsi(res))
4924 return FAILED;
4925
4926 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4927 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4928 ipr_cmd->done = ipr_scsi_eh_done;
4929 op_found = 1;
4930 break;
4931 }
4932 }
4933
4934 if (!op_found)
4935 return SUCCESS;
4936
4937 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4938 ipr_cmd->ioarcb.res_handle = res->res_handle;
4939 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4940 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4941 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4942 ipr_cmd->u.sdev = scsi_cmd->device;
4943
4944 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4945 scsi_cmd->cmnd[0]);
4946 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4947 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4948
4949 /*
4950 * If the abort task timed out and we sent a bus reset, we will get
4951 * one the following responses to the abort
4952 */
4953 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4954 ioasc = 0;
4955 ipr_trace;
4956 }
4957
4958 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4959 if (!ipr_is_naca_model(res))
4960 res->needs_sync_complete = 1;
4961
4962 LEAVE;
4963 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4964 }
4965
4966 /**
4967 * ipr_eh_abort - Abort a single op
4968 * @scsi_cmd: scsi command struct
4969 *
4970 * Return value:
4971 * SUCCESS / FAILED
4972 **/
4973 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4974 {
4975 unsigned long flags;
4976 int rc;
4977
4978 ENTER;
4979
4980 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4981 rc = ipr_cancel_op(scsi_cmd);
4982 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4983
4984 LEAVE;
4985 return rc;
4986 }
4987
4988 /**
4989 * ipr_handle_other_interrupt - Handle "other" interrupts
4990 * @ioa_cfg: ioa config struct
4991 * @int_reg: interrupt register
4992 *
4993 * Return value:
4994 * IRQ_NONE / IRQ_HANDLED
4995 **/
4996 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4997 u32 int_reg)
4998 {
4999 irqreturn_t rc = IRQ_HANDLED;
5000 u32 int_mask_reg;
5001
5002 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5003 int_reg &= ~int_mask_reg;
5004
5005 /* If an interrupt on the adapter did not occur, ignore it.
5006 * Or in the case of SIS 64, check for a stage change interrupt.
5007 */
5008 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5009 if (ioa_cfg->sis64) {
5010 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5011 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5012 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5013
5014 /* clear stage change */
5015 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5016 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5017 list_del(&ioa_cfg->reset_cmd->queue);
5018 del_timer(&ioa_cfg->reset_cmd->timer);
5019 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5020 return IRQ_HANDLED;
5021 }
5022 }
5023
5024 return IRQ_NONE;
5025 }
5026
5027 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5028 /* Mask the interrupt */
5029 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5030
5031 /* Clear the interrupt */
5032 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
5033 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5034
5035 list_del(&ioa_cfg->reset_cmd->queue);
5036 del_timer(&ioa_cfg->reset_cmd->timer);
5037 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5038 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5039 if (ipr_debug && printk_ratelimit())
5040 dev_err(&ioa_cfg->pdev->dev,
5041 "Spurious interrupt detected. 0x%08X\n", int_reg);
5042 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5043 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5044 return IRQ_NONE;
5045 } else {
5046 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5047 ioa_cfg->ioa_unit_checked = 1;
5048 else
5049 dev_err(&ioa_cfg->pdev->dev,
5050 "Permanent IOA failure. 0x%08X\n", int_reg);
5051
5052 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5053 ioa_cfg->sdt_state = GET_DUMP;
5054
5055 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5056 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5057 }
5058
5059 return rc;
5060 }
5061
5062 /**
5063 * ipr_isr_eh - Interrupt service routine error handler
5064 * @ioa_cfg: ioa config struct
5065 * @msg: message to log
5066 *
5067 * Return value:
5068 * none
5069 **/
5070 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
5071 {
5072 ioa_cfg->errors_logged++;
5073 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
5074
5075 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5076 ioa_cfg->sdt_state = GET_DUMP;
5077
5078 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5079 }
5080
5081 /**
5082 * ipr_isr - Interrupt service routine
5083 * @irq: irq number
5084 * @devp: pointer to ioa config struct
5085 *
5086 * Return value:
5087 * IRQ_NONE / IRQ_HANDLED
5088 **/
5089 static irqreturn_t ipr_isr(int irq, void *devp)
5090 {
5091 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
5092 unsigned long lock_flags = 0;
5093 u32 int_reg = 0;
5094 u32 ioasc;
5095 u16 cmd_index;
5096 int num_hrrq = 0;
5097 int irq_none = 0;
5098 struct ipr_cmnd *ipr_cmd;
5099 irqreturn_t rc = IRQ_NONE;
5100
5101 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5102
5103 /* If interrupts are disabled, ignore the interrupt */
5104 if (!ioa_cfg->allow_interrupts) {
5105 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5106 return IRQ_NONE;
5107 }
5108
5109 while (1) {
5110 ipr_cmd = NULL;
5111
5112 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5113 ioa_cfg->toggle_bit) {
5114
5115 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
5116 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5117
5118 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
5119 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
5120 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5121 return IRQ_HANDLED;
5122 }
5123
5124 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5125
5126 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5127
5128 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5129
5130 list_del(&ipr_cmd->queue);
5131 del_timer(&ipr_cmd->timer);
5132 ipr_cmd->done(ipr_cmd);
5133
5134 rc = IRQ_HANDLED;
5135
5136 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
5137 ioa_cfg->hrrq_curr++;
5138 } else {
5139 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5140 ioa_cfg->toggle_bit ^= 1u;
5141 }
5142 }
5143
5144 if (ipr_cmd != NULL) {
5145 /* Clear the PCI interrupt */
5146 num_hrrq = 0;
5147 do {
5148 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5149 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5150 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5151 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5152
5153 } else if (rc == IRQ_NONE && irq_none == 0) {
5154 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5155 irq_none++;
5156 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5157 int_reg & IPR_PCII_HRRQ_UPDATED) {
5158 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
5159 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5160 return IRQ_HANDLED;
5161 } else
5162 break;
5163 }
5164
5165 if (unlikely(rc == IRQ_NONE))
5166 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5167
5168 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5169 return rc;
5170 }
5171
5172 /**
5173 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5174 * @ioa_cfg: ioa config struct
5175 * @ipr_cmd: ipr command struct
5176 *
5177 * Return value:
5178 * 0 on success / -1 on failure
5179 **/
5180 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5181 struct ipr_cmnd *ipr_cmd)
5182 {
5183 int i, nseg;
5184 struct scatterlist *sg;
5185 u32 length;
5186 u32 ioadl_flags = 0;
5187 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5188 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5189 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5190
5191 length = scsi_bufflen(scsi_cmd);
5192 if (!length)
5193 return 0;
5194
5195 nseg = scsi_dma_map(scsi_cmd);
5196 if (nseg < 0) {
5197 if (printk_ratelimit())
5198 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5199 return -1;
5200 }
5201
5202 ipr_cmd->dma_use_sg = nseg;
5203
5204 ioarcb->data_transfer_length = cpu_to_be32(length);
5205 ioarcb->ioadl_len =
5206 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5207
5208 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5209 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5210 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5211 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5212 ioadl_flags = IPR_IOADL_FLAGS_READ;
5213
5214 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5215 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5216 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5217 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5218 }
5219
5220 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5221 return 0;
5222 }
5223
5224 /**
5225 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5226 * @ioa_cfg: ioa config struct
5227 * @ipr_cmd: ipr command struct
5228 *
5229 * Return value:
5230 * 0 on success / -1 on failure
5231 **/
5232 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5233 struct ipr_cmnd *ipr_cmd)
5234 {
5235 int i, nseg;
5236 struct scatterlist *sg;
5237 u32 length;
5238 u32 ioadl_flags = 0;
5239 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5240 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5241 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5242
5243 length = scsi_bufflen(scsi_cmd);
5244 if (!length)
5245 return 0;
5246
5247 nseg = scsi_dma_map(scsi_cmd);
5248 if (nseg < 0) {
5249 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5250 return -1;
5251 }
5252
5253 ipr_cmd->dma_use_sg = nseg;
5254
5255 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5256 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5257 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5258 ioarcb->data_transfer_length = cpu_to_be32(length);
5259 ioarcb->ioadl_len =
5260 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5261 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5262 ioadl_flags = IPR_IOADL_FLAGS_READ;
5263 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5264 ioarcb->read_ioadl_len =
5265 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5266 }
5267
5268 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5269 ioadl = ioarcb->u.add_data.u.ioadl;
5270 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5271 offsetof(struct ipr_ioarcb, u.add_data));
5272 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5273 }
5274
5275 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5276 ioadl[i].flags_and_data_len =
5277 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5278 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5279 }
5280
5281 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5282 return 0;
5283 }
5284
5285 /**
5286 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5287 * @scsi_cmd: scsi command struct
5288 *
5289 * Return value:
5290 * task attributes
5291 **/
5292 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5293 {
5294 u8 tag[2];
5295 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5296
5297 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5298 switch (tag[0]) {
5299 case MSG_SIMPLE_TAG:
5300 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5301 break;
5302 case MSG_HEAD_TAG:
5303 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5304 break;
5305 case MSG_ORDERED_TAG:
5306 rc = IPR_FLAGS_LO_ORDERED_TASK;
5307 break;
5308 };
5309 }
5310
5311 return rc;
5312 }
5313
5314 /**
5315 * ipr_erp_done - Process completion of ERP for a device
5316 * @ipr_cmd: ipr command struct
5317 *
5318 * This function copies the sense buffer into the scsi_cmd
5319 * struct and pushes the scsi_done function.
5320 *
5321 * Return value:
5322 * nothing
5323 **/
5324 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5325 {
5326 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5327 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5328 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5329 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5330
5331 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5332 scsi_cmd->result |= (DID_ERROR << 16);
5333 scmd_printk(KERN_ERR, scsi_cmd,
5334 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5335 } else {
5336 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5337 SCSI_SENSE_BUFFERSIZE);
5338 }
5339
5340 if (res) {
5341 if (!ipr_is_naca_model(res))
5342 res->needs_sync_complete = 1;
5343 res->in_erp = 0;
5344 }
5345 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5346 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5347 scsi_cmd->scsi_done(scsi_cmd);
5348 }
5349
5350 /**
5351 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5352 * @ipr_cmd: ipr command struct
5353 *
5354 * Return value:
5355 * none
5356 **/
5357 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5358 {
5359 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5360 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5361 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5362
5363 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5364 ioarcb->data_transfer_length = 0;
5365 ioarcb->read_data_transfer_length = 0;
5366 ioarcb->ioadl_len = 0;
5367 ioarcb->read_ioadl_len = 0;
5368 ioasa->hdr.ioasc = 0;
5369 ioasa->hdr.residual_data_len = 0;
5370
5371 if (ipr_cmd->ioa_cfg->sis64)
5372 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5373 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5374 else {
5375 ioarcb->write_ioadl_addr =
5376 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5377 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5378 }
5379 }
5380
5381 /**
5382 * ipr_erp_request_sense - Send request sense to a device
5383 * @ipr_cmd: ipr command struct
5384 *
5385 * This function sends a request sense to a device as a result
5386 * of a check condition.
5387 *
5388 * Return value:
5389 * nothing
5390 **/
5391 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5392 {
5393 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5394 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5395
5396 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5397 ipr_erp_done(ipr_cmd);
5398 return;
5399 }
5400
5401 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5402
5403 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5404 cmd_pkt->cdb[0] = REQUEST_SENSE;
5405 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5406 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5407 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5408 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5409
5410 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5411 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5412
5413 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5414 IPR_REQUEST_SENSE_TIMEOUT * 2);
5415 }
5416
5417 /**
5418 * ipr_erp_cancel_all - Send cancel all to a device
5419 * @ipr_cmd: ipr command struct
5420 *
5421 * This function sends a cancel all to a device to clear the
5422 * queue. If we are running TCQ on the device, QERR is set to 1,
5423 * which means all outstanding ops have been dropped on the floor.
5424 * Cancel all will return them to us.
5425 *
5426 * Return value:
5427 * nothing
5428 **/
5429 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5430 {
5431 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5432 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5433 struct ipr_cmd_pkt *cmd_pkt;
5434
5435 res->in_erp = 1;
5436
5437 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5438
5439 if (!scsi_get_tag_type(scsi_cmd->device)) {
5440 ipr_erp_request_sense(ipr_cmd);
5441 return;
5442 }
5443
5444 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5445 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5446 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5447
5448 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5449 IPR_CANCEL_ALL_TIMEOUT);
5450 }
5451
5452 /**
5453 * ipr_dump_ioasa - Dump contents of IOASA
5454 * @ioa_cfg: ioa config struct
5455 * @ipr_cmd: ipr command struct
5456 * @res: resource entry struct
5457 *
5458 * This function is invoked by the interrupt handler when ops
5459 * fail. It will log the IOASA if appropriate. Only called
5460 * for GPDD ops.
5461 *
5462 * Return value:
5463 * none
5464 **/
5465 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5466 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5467 {
5468 int i;
5469 u16 data_len;
5470 u32 ioasc, fd_ioasc;
5471 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5472 __be32 *ioasa_data = (__be32 *)ioasa;
5473 int error_index;
5474
5475 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5476 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5477
5478 if (0 == ioasc)
5479 return;
5480
5481 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5482 return;
5483
5484 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5485 error_index = ipr_get_error(fd_ioasc);
5486 else
5487 error_index = ipr_get_error(ioasc);
5488
5489 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5490 /* Don't log an error if the IOA already logged one */
5491 if (ioasa->hdr.ilid != 0)
5492 return;
5493
5494 if (!ipr_is_gscsi(res))
5495 return;
5496
5497 if (ipr_error_table[error_index].log_ioasa == 0)
5498 return;
5499 }
5500
5501 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5502
5503 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5504 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5505 data_len = sizeof(struct ipr_ioasa64);
5506 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
5507 data_len = sizeof(struct ipr_ioasa);
5508
5509 ipr_err("IOASA Dump:\n");
5510
5511 for (i = 0; i < data_len / 4; i += 4) {
5512 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5513 be32_to_cpu(ioasa_data[i]),
5514 be32_to_cpu(ioasa_data[i+1]),
5515 be32_to_cpu(ioasa_data[i+2]),
5516 be32_to_cpu(ioasa_data[i+3]));
5517 }
5518 }
5519
5520 /**
5521 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5522 * @ioasa: IOASA
5523 * @sense_buf: sense data buffer
5524 *
5525 * Return value:
5526 * none
5527 **/
5528 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5529 {
5530 u32 failing_lba;
5531 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5532 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5533 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5534 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
5535
5536 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5537
5538 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5539 return;
5540
5541 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5542
5543 if (ipr_is_vset_device(res) &&
5544 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5545 ioasa->u.vset.failing_lba_hi != 0) {
5546 sense_buf[0] = 0x72;
5547 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5548 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5549 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5550
5551 sense_buf[7] = 12;
5552 sense_buf[8] = 0;
5553 sense_buf[9] = 0x0A;
5554 sense_buf[10] = 0x80;
5555
5556 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5557
5558 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5559 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5560 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5561 sense_buf[15] = failing_lba & 0x000000ff;
5562
5563 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5564
5565 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5566 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5567 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5568 sense_buf[19] = failing_lba & 0x000000ff;
5569 } else {
5570 sense_buf[0] = 0x70;
5571 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5572 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5573 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5574
5575 /* Illegal request */
5576 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
5577 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
5578 sense_buf[7] = 10; /* additional length */
5579
5580 /* IOARCB was in error */
5581 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5582 sense_buf[15] = 0xC0;
5583 else /* Parameter data was invalid */
5584 sense_buf[15] = 0x80;
5585
5586 sense_buf[16] =
5587 ((IPR_FIELD_POINTER_MASK &
5588 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
5589 sense_buf[17] =
5590 (IPR_FIELD_POINTER_MASK &
5591 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
5592 } else {
5593 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5594 if (ipr_is_vset_device(res))
5595 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5596 else
5597 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5598
5599 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5600 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5601 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5602 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5603 sense_buf[6] = failing_lba & 0x000000ff;
5604 }
5605
5606 sense_buf[7] = 6; /* additional length */
5607 }
5608 }
5609 }
5610
5611 /**
5612 * ipr_get_autosense - Copy autosense data to sense buffer
5613 * @ipr_cmd: ipr command struct
5614 *
5615 * This function copies the autosense buffer to the buffer
5616 * in the scsi_cmd, if there is autosense available.
5617 *
5618 * Return value:
5619 * 1 if autosense was available / 0 if not
5620 **/
5621 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5622 {
5623 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5624 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
5625
5626 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
5627 return 0;
5628
5629 if (ipr_cmd->ioa_cfg->sis64)
5630 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
5631 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
5632 SCSI_SENSE_BUFFERSIZE));
5633 else
5634 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5635 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5636 SCSI_SENSE_BUFFERSIZE));
5637 return 1;
5638 }
5639
5640 /**
5641 * ipr_erp_start - Process an error response for a SCSI op
5642 * @ioa_cfg: ioa config struct
5643 * @ipr_cmd: ipr command struct
5644 *
5645 * This function determines whether or not to initiate ERP
5646 * on the affected device.
5647 *
5648 * Return value:
5649 * nothing
5650 **/
5651 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5652 struct ipr_cmnd *ipr_cmd)
5653 {
5654 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5655 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5656 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5657 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
5658
5659 if (!res) {
5660 ipr_scsi_eh_done(ipr_cmd);
5661 return;
5662 }
5663
5664 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
5665 ipr_gen_sense(ipr_cmd);
5666
5667 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5668
5669 switch (masked_ioasc) {
5670 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
5671 if (ipr_is_naca_model(res))
5672 scsi_cmd->result |= (DID_ABORT << 16);
5673 else
5674 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5675 break;
5676 case IPR_IOASC_IR_RESOURCE_HANDLE:
5677 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
5678 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5679 break;
5680 case IPR_IOASC_HW_SEL_TIMEOUT:
5681 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5682 if (!ipr_is_naca_model(res))
5683 res->needs_sync_complete = 1;
5684 break;
5685 case IPR_IOASC_SYNC_REQUIRED:
5686 if (!res->in_erp)
5687 res->needs_sync_complete = 1;
5688 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5689 break;
5690 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
5691 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
5692 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5693 break;
5694 case IPR_IOASC_BUS_WAS_RESET:
5695 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5696 /*
5697 * Report the bus reset and ask for a retry. The device
5698 * will give CC/UA the next command.
5699 */
5700 if (!res->resetting_device)
5701 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
5702 scsi_cmd->result |= (DID_ERROR << 16);
5703 if (!ipr_is_naca_model(res))
5704 res->needs_sync_complete = 1;
5705 break;
5706 case IPR_IOASC_HW_DEV_BUS_STATUS:
5707 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
5708 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
5709 if (!ipr_get_autosense(ipr_cmd)) {
5710 if (!ipr_is_naca_model(res)) {
5711 ipr_erp_cancel_all(ipr_cmd);
5712 return;
5713 }
5714 }
5715 }
5716 if (!ipr_is_naca_model(res))
5717 res->needs_sync_complete = 1;
5718 break;
5719 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
5720 break;
5721 default:
5722 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5723 scsi_cmd->result |= (DID_ERROR << 16);
5724 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
5725 res->needs_sync_complete = 1;
5726 break;
5727 }
5728
5729 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5730 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5731 scsi_cmd->scsi_done(scsi_cmd);
5732 }
5733
5734 /**
5735 * ipr_scsi_done - mid-layer done function
5736 * @ipr_cmd: ipr command struct
5737 *
5738 * This function is invoked by the interrupt handler for
5739 * ops generated by the SCSI mid-layer
5740 *
5741 * Return value:
5742 * none
5743 **/
5744 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
5745 {
5746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5748 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5749
5750 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
5751
5752 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
5753 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5754 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5755 scsi_cmd->scsi_done(scsi_cmd);
5756 } else
5757 ipr_erp_start(ioa_cfg, ipr_cmd);
5758 }
5759
5760 /**
5761 * ipr_queuecommand - Queue a mid-layer request
5762 * @scsi_cmd: scsi command struct
5763 * @done: done function
5764 *
5765 * This function queues a request generated by the mid-layer.
5766 *
5767 * Return value:
5768 * 0 on success
5769 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
5770 * SCSI_MLQUEUE_HOST_BUSY if host is busy
5771 **/
5772 static int ipr_queuecommand_lck(struct scsi_cmnd *scsi_cmd,
5773 void (*done) (struct scsi_cmnd *))
5774 {
5775 struct ipr_ioa_cfg *ioa_cfg;
5776 struct ipr_resource_entry *res;
5777 struct ipr_ioarcb *ioarcb;
5778 struct ipr_cmnd *ipr_cmd;
5779 int rc = 0;
5780
5781 scsi_cmd->scsi_done = done;
5782 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5783 res = scsi_cmd->device->hostdata;
5784 scsi_cmd->result = (DID_OK << 16);
5785
5786 /*
5787 * We are currently blocking all devices due to a host reset
5788 * We have told the host to stop giving us new requests, but
5789 * ERP ops don't count. FIXME
5790 */
5791 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
5792 return SCSI_MLQUEUE_HOST_BUSY;
5793
5794 /*
5795 * FIXME - Create scsi_set_host_offline interface
5796 * and the ioa_is_dead check can be removed
5797 */
5798 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
5799 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
5800 scsi_cmd->result = (DID_NO_CONNECT << 16);
5801 scsi_cmd->scsi_done(scsi_cmd);
5802 return 0;
5803 }
5804
5805 if (ipr_is_gata(res) && res->sata_port)
5806 return ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
5807
5808 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5809 ioarcb = &ipr_cmd->ioarcb;
5810 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5811
5812 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
5813 ipr_cmd->scsi_cmd = scsi_cmd;
5814 ioarcb->res_handle = res->res_handle;
5815 ipr_cmd->done = ipr_scsi_done;
5816 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
5817
5818 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
5819 if (scsi_cmd->underflow == 0)
5820 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5821
5822 if (res->needs_sync_complete) {
5823 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
5824 res->needs_sync_complete = 0;
5825 }
5826
5827 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5828 if (ipr_is_gscsi(res))
5829 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
5830 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
5831 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
5832 }
5833
5834 if (scsi_cmd->cmnd[0] >= 0xC0 &&
5835 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
5836 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5837
5838 if (likely(rc == 0)) {
5839 if (ioa_cfg->sis64)
5840 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
5841 else
5842 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
5843 }
5844
5845 if (likely(rc == 0)) {
5846 mb();
5847 ipr_send_command(ipr_cmd);
5848 } else {
5849 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5850 return SCSI_MLQUEUE_HOST_BUSY;
5851 }
5852
5853 return 0;
5854 }
5855
5856 static DEF_SCSI_QCMD(ipr_queuecommand)
5857
5858 /**
5859 * ipr_ioctl - IOCTL handler
5860 * @sdev: scsi device struct
5861 * @cmd: IOCTL cmd
5862 * @arg: IOCTL arg
5863 *
5864 * Return value:
5865 * 0 on success / other on failure
5866 **/
5867 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5868 {
5869 struct ipr_resource_entry *res;
5870
5871 res = (struct ipr_resource_entry *)sdev->hostdata;
5872 if (res && ipr_is_gata(res)) {
5873 if (cmd == HDIO_GET_IDENTITY)
5874 return -ENOTTY;
5875 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
5876 }
5877
5878 return -EINVAL;
5879 }
5880
5881 /**
5882 * ipr_info - Get information about the card/driver
5883 * @scsi_host: scsi host struct
5884 *
5885 * Return value:
5886 * pointer to buffer with description string
5887 **/
5888 static const char * ipr_ioa_info(struct Scsi_Host *host)
5889 {
5890 static char buffer[512];
5891 struct ipr_ioa_cfg *ioa_cfg;
5892 unsigned long lock_flags = 0;
5893
5894 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
5895
5896 spin_lock_irqsave(host->host_lock, lock_flags);
5897 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
5898 spin_unlock_irqrestore(host->host_lock, lock_flags);
5899
5900 return buffer;
5901 }
5902
5903 static struct scsi_host_template driver_template = {
5904 .module = THIS_MODULE,
5905 .name = "IPR",
5906 .info = ipr_ioa_info,
5907 .ioctl = ipr_ioctl,
5908 .queuecommand = ipr_queuecommand,
5909 .eh_abort_handler = ipr_eh_abort,
5910 .eh_device_reset_handler = ipr_eh_dev_reset,
5911 .eh_host_reset_handler = ipr_eh_host_reset,
5912 .slave_alloc = ipr_slave_alloc,
5913 .slave_configure = ipr_slave_configure,
5914 .slave_destroy = ipr_slave_destroy,
5915 .target_alloc = ipr_target_alloc,
5916 .target_destroy = ipr_target_destroy,
5917 .change_queue_depth = ipr_change_queue_depth,
5918 .change_queue_type = ipr_change_queue_type,
5919 .bios_param = ipr_biosparam,
5920 .can_queue = IPR_MAX_COMMANDS,
5921 .this_id = -1,
5922 .sg_tablesize = IPR_MAX_SGLIST,
5923 .max_sectors = IPR_IOA_MAX_SECTORS,
5924 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5925 .use_clustering = ENABLE_CLUSTERING,
5926 .shost_attrs = ipr_ioa_attrs,
5927 .sdev_attrs = ipr_dev_attrs,
5928 .proc_name = IPR_NAME
5929 };
5930
5931 /**
5932 * ipr_ata_phy_reset - libata phy_reset handler
5933 * @ap: ata port to reset
5934 *
5935 **/
5936 static void ipr_ata_phy_reset(struct ata_port *ap)
5937 {
5938 unsigned long flags;
5939 struct ipr_sata_port *sata_port = ap->private_data;
5940 struct ipr_resource_entry *res = sata_port->res;
5941 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5942 int rc;
5943
5944 ENTER;
5945 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5946 while(ioa_cfg->in_reset_reload) {
5947 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5948 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5949 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5950 }
5951
5952 if (!ioa_cfg->allow_cmds)
5953 goto out_unlock;
5954
5955 rc = ipr_device_reset(ioa_cfg, res);
5956
5957 if (rc) {
5958 ap->link.device[0].class = ATA_DEV_NONE;
5959 goto out_unlock;
5960 }
5961
5962 ap->link.device[0].class = res->ata_class;
5963 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
5964 ap->link.device[0].class = ATA_DEV_NONE;
5965
5966 out_unlock:
5967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5968 LEAVE;
5969 }
5970
5971 /**
5972 * ipr_ata_post_internal - Cleanup after an internal command
5973 * @qc: ATA queued command
5974 *
5975 * Return value:
5976 * none
5977 **/
5978 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5979 {
5980 struct ipr_sata_port *sata_port = qc->ap->private_data;
5981 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5982 struct ipr_cmnd *ipr_cmd;
5983 unsigned long flags;
5984
5985 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5986 while(ioa_cfg->in_reset_reload) {
5987 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5988 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5989 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5990 }
5991
5992 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5993 if (ipr_cmd->qc == qc) {
5994 ipr_device_reset(ioa_cfg, sata_port->res);
5995 break;
5996 }
5997 }
5998 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5999 }
6000
6001 /**
6002 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6003 * @regs: destination
6004 * @tf: source ATA taskfile
6005 *
6006 * Return value:
6007 * none
6008 **/
6009 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6010 struct ata_taskfile *tf)
6011 {
6012 regs->feature = tf->feature;
6013 regs->nsect = tf->nsect;
6014 regs->lbal = tf->lbal;
6015 regs->lbam = tf->lbam;
6016 regs->lbah = tf->lbah;
6017 regs->device = tf->device;
6018 regs->command = tf->command;
6019 regs->hob_feature = tf->hob_feature;
6020 regs->hob_nsect = tf->hob_nsect;
6021 regs->hob_lbal = tf->hob_lbal;
6022 regs->hob_lbam = tf->hob_lbam;
6023 regs->hob_lbah = tf->hob_lbah;
6024 regs->ctl = tf->ctl;
6025 }
6026
6027 /**
6028 * ipr_sata_done - done function for SATA commands
6029 * @ipr_cmd: ipr command struct
6030 *
6031 * This function is invoked by the interrupt handler for
6032 * ops generated by the SCSI mid-layer to SATA devices
6033 *
6034 * Return value:
6035 * none
6036 **/
6037 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6038 {
6039 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6040 struct ata_queued_cmd *qc = ipr_cmd->qc;
6041 struct ipr_sata_port *sata_port = qc->ap->private_data;
6042 struct ipr_resource_entry *res = sata_port->res;
6043 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6044
6045 if (ipr_cmd->ioa_cfg->sis64)
6046 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6047 sizeof(struct ipr_ioasa_gata));
6048 else
6049 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6050 sizeof(struct ipr_ioasa_gata));
6051 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6052
6053 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6054 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6055
6056 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6057 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6058 else
6059 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6060 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6061 ata_qc_complete(qc);
6062 }
6063
6064 /**
6065 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6066 * @ipr_cmd: ipr command struct
6067 * @qc: ATA queued command
6068 *
6069 **/
6070 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6071 struct ata_queued_cmd *qc)
6072 {
6073 u32 ioadl_flags = 0;
6074 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6075 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
6076 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6077 int len = qc->nbytes;
6078 struct scatterlist *sg;
6079 unsigned int si;
6080 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6081
6082 if (len == 0)
6083 return;
6084
6085 if (qc->dma_dir == DMA_TO_DEVICE) {
6086 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6087 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6088 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6089 ioadl_flags = IPR_IOADL_FLAGS_READ;
6090
6091 ioarcb->data_transfer_length = cpu_to_be32(len);
6092 ioarcb->ioadl_len =
6093 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6094 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6095 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
6096
6097 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6098 ioadl64->flags = cpu_to_be32(ioadl_flags);
6099 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6100 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6101
6102 last_ioadl64 = ioadl64;
6103 ioadl64++;
6104 }
6105
6106 if (likely(last_ioadl64))
6107 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6108 }
6109
6110 /**
6111 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6112 * @ipr_cmd: ipr command struct
6113 * @qc: ATA queued command
6114 *
6115 **/
6116 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6117 struct ata_queued_cmd *qc)
6118 {
6119 u32 ioadl_flags = 0;
6120 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6121 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6122 struct ipr_ioadl_desc *last_ioadl = NULL;
6123 int len = qc->nbytes;
6124 struct scatterlist *sg;
6125 unsigned int si;
6126
6127 if (len == 0)
6128 return;
6129
6130 if (qc->dma_dir == DMA_TO_DEVICE) {
6131 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6132 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6133 ioarcb->data_transfer_length = cpu_to_be32(len);
6134 ioarcb->ioadl_len =
6135 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6136 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6137 ioadl_flags = IPR_IOADL_FLAGS_READ;
6138 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6139 ioarcb->read_ioadl_len =
6140 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6141 }
6142
6143 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6144 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6145 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6146
6147 last_ioadl = ioadl;
6148 ioadl++;
6149 }
6150
6151 if (likely(last_ioadl))
6152 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6153 }
6154
6155 /**
6156 * ipr_qc_issue - Issue a SATA qc to a device
6157 * @qc: queued command
6158 *
6159 * Return value:
6160 * 0 if success
6161 **/
6162 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6163 {
6164 struct ata_port *ap = qc->ap;
6165 struct ipr_sata_port *sata_port = ap->private_data;
6166 struct ipr_resource_entry *res = sata_port->res;
6167 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6168 struct ipr_cmnd *ipr_cmd;
6169 struct ipr_ioarcb *ioarcb;
6170 struct ipr_ioarcb_ata_regs *regs;
6171
6172 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
6173 return AC_ERR_SYSTEM;
6174
6175 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6176 ioarcb = &ipr_cmd->ioarcb;
6177
6178 if (ioa_cfg->sis64) {
6179 regs = &ipr_cmd->i.ata_ioadl.regs;
6180 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6181 } else
6182 regs = &ioarcb->u.add_data.u.regs;
6183
6184 memset(regs, 0, sizeof(*regs));
6185 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6186
6187 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6188 ipr_cmd->qc = qc;
6189 ipr_cmd->done = ipr_sata_done;
6190 ipr_cmd->ioarcb.res_handle = res->res_handle;
6191 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6192 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6193 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6194 ipr_cmd->dma_use_sg = qc->n_elem;
6195
6196 if (ioa_cfg->sis64)
6197 ipr_build_ata_ioadl64(ipr_cmd, qc);
6198 else
6199 ipr_build_ata_ioadl(ipr_cmd, qc);
6200
6201 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6202 ipr_copy_sata_tf(regs, &qc->tf);
6203 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6204 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6205
6206 switch (qc->tf.protocol) {
6207 case ATA_PROT_NODATA:
6208 case ATA_PROT_PIO:
6209 break;
6210
6211 case ATA_PROT_DMA:
6212 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6213 break;
6214
6215 case ATAPI_PROT_PIO:
6216 case ATAPI_PROT_NODATA:
6217 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6218 break;
6219
6220 case ATAPI_PROT_DMA:
6221 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6222 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6223 break;
6224
6225 default:
6226 WARN_ON(1);
6227 return AC_ERR_INVALID;
6228 }
6229
6230 mb();
6231
6232 ipr_send_command(ipr_cmd);
6233
6234 return 0;
6235 }
6236
6237 /**
6238 * ipr_qc_fill_rtf - Read result TF
6239 * @qc: ATA queued command
6240 *
6241 * Return value:
6242 * true
6243 **/
6244 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6245 {
6246 struct ipr_sata_port *sata_port = qc->ap->private_data;
6247 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6248 struct ata_taskfile *tf = &qc->result_tf;
6249
6250 tf->feature = g->error;
6251 tf->nsect = g->nsect;
6252 tf->lbal = g->lbal;
6253 tf->lbam = g->lbam;
6254 tf->lbah = g->lbah;
6255 tf->device = g->device;
6256 tf->command = g->status;
6257 tf->hob_nsect = g->hob_nsect;
6258 tf->hob_lbal = g->hob_lbal;
6259 tf->hob_lbam = g->hob_lbam;
6260 tf->hob_lbah = g->hob_lbah;
6261 tf->ctl = g->alt_status;
6262
6263 return true;
6264 }
6265
6266 static struct ata_port_operations ipr_sata_ops = {
6267 .phy_reset = ipr_ata_phy_reset,
6268 .hardreset = ipr_sata_reset,
6269 .post_internal_cmd = ipr_ata_post_internal,
6270 .qc_prep = ata_noop_qc_prep,
6271 .qc_issue = ipr_qc_issue,
6272 .qc_fill_rtf = ipr_qc_fill_rtf,
6273 .port_start = ata_sas_port_start,
6274 .port_stop = ata_sas_port_stop
6275 };
6276
6277 static struct ata_port_info sata_port_info = {
6278 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
6279 .pio_mask = ATA_PIO4_ONLY,
6280 .mwdma_mask = ATA_MWDMA2,
6281 .udma_mask = ATA_UDMA6,
6282 .port_ops = &ipr_sata_ops
6283 };
6284
6285 #ifdef CONFIG_PPC_PSERIES
6286 static const u16 ipr_blocked_processors[] = {
6287 PV_NORTHSTAR,
6288 PV_PULSAR,
6289 PV_POWER4,
6290 PV_ICESTAR,
6291 PV_SSTAR,
6292 PV_POWER4p,
6293 PV_630,
6294 PV_630p
6295 };
6296
6297 /**
6298 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6299 * @ioa_cfg: ioa cfg struct
6300 *
6301 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6302 * certain pSeries hardware. This function determines if the given
6303 * adapter is in one of these confgurations or not.
6304 *
6305 * Return value:
6306 * 1 if adapter is not supported / 0 if adapter is supported
6307 **/
6308 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6309 {
6310 int i;
6311
6312 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6313 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
6314 if (__is_processor(ipr_blocked_processors[i]))
6315 return 1;
6316 }
6317 }
6318 return 0;
6319 }
6320 #else
6321 #define ipr_invalid_adapter(ioa_cfg) 0
6322 #endif
6323
6324 /**
6325 * ipr_ioa_bringdown_done - IOA bring down completion.
6326 * @ipr_cmd: ipr command struct
6327 *
6328 * This function processes the completion of an adapter bring down.
6329 * It wakes any reset sleepers.
6330 *
6331 * Return value:
6332 * IPR_RC_JOB_RETURN
6333 **/
6334 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6335 {
6336 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6337
6338 ENTER;
6339 ioa_cfg->in_reset_reload = 0;
6340 ioa_cfg->reset_retries = 0;
6341 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6342 wake_up_all(&ioa_cfg->reset_wait_q);
6343
6344 spin_unlock_irq(ioa_cfg->host->host_lock);
6345 scsi_unblock_requests(ioa_cfg->host);
6346 spin_lock_irq(ioa_cfg->host->host_lock);
6347 LEAVE;
6348
6349 return IPR_RC_JOB_RETURN;
6350 }
6351
6352 /**
6353 * ipr_ioa_reset_done - IOA reset completion.
6354 * @ipr_cmd: ipr command struct
6355 *
6356 * This function processes the completion of an adapter reset.
6357 * It schedules any necessary mid-layer add/removes and
6358 * wakes any reset sleepers.
6359 *
6360 * Return value:
6361 * IPR_RC_JOB_RETURN
6362 **/
6363 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6364 {
6365 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6366 struct ipr_resource_entry *res;
6367 struct ipr_hostrcb *hostrcb, *temp;
6368 int i = 0;
6369
6370 ENTER;
6371 ioa_cfg->in_reset_reload = 0;
6372 ioa_cfg->allow_cmds = 1;
6373 ioa_cfg->reset_cmd = NULL;
6374 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6375
6376 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6377 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6378 ipr_trace;
6379 break;
6380 }
6381 }
6382 schedule_work(&ioa_cfg->work_q);
6383
6384 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6385 list_del(&hostrcb->queue);
6386 if (i++ < IPR_NUM_LOG_HCAMS)
6387 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6388 else
6389 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6390 }
6391
6392 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6393 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6394
6395 ioa_cfg->reset_retries = 0;
6396 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6397 wake_up_all(&ioa_cfg->reset_wait_q);
6398
6399 spin_unlock(ioa_cfg->host->host_lock);
6400 scsi_unblock_requests(ioa_cfg->host);
6401 spin_lock(ioa_cfg->host->host_lock);
6402
6403 if (!ioa_cfg->allow_cmds)
6404 scsi_block_requests(ioa_cfg->host);
6405
6406 LEAVE;
6407 return IPR_RC_JOB_RETURN;
6408 }
6409
6410 /**
6411 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6412 * @supported_dev: supported device struct
6413 * @vpids: vendor product id struct
6414 *
6415 * Return value:
6416 * none
6417 **/
6418 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6419 struct ipr_std_inq_vpids *vpids)
6420 {
6421 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6422 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6423 supported_dev->num_records = 1;
6424 supported_dev->data_length =
6425 cpu_to_be16(sizeof(struct ipr_supported_device));
6426 supported_dev->reserved = 0;
6427 }
6428
6429 /**
6430 * ipr_set_supported_devs - Send Set Supported Devices for a device
6431 * @ipr_cmd: ipr command struct
6432 *
6433 * This function sends a Set Supported Devices to the adapter
6434 *
6435 * Return value:
6436 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6437 **/
6438 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6439 {
6440 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6441 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6442 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6443 struct ipr_resource_entry *res = ipr_cmd->u.res;
6444
6445 ipr_cmd->job_step = ipr_ioa_reset_done;
6446
6447 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6448 if (!ipr_is_scsi_disk(res))
6449 continue;
6450
6451 ipr_cmd->u.res = res;
6452 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6453
6454 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6455 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6456 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6457
6458 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6459 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6460 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6461 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6462
6463 ipr_init_ioadl(ipr_cmd,
6464 ioa_cfg->vpd_cbs_dma +
6465 offsetof(struct ipr_misc_cbs, supp_dev),
6466 sizeof(struct ipr_supported_device),
6467 IPR_IOADL_FLAGS_WRITE_LAST);
6468
6469 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6470 IPR_SET_SUP_DEVICE_TIMEOUT);
6471
6472 if (!ioa_cfg->sis64)
6473 ipr_cmd->job_step = ipr_set_supported_devs;
6474 return IPR_RC_JOB_RETURN;
6475 }
6476
6477 return IPR_RC_JOB_CONTINUE;
6478 }
6479
6480 /**
6481 * ipr_get_mode_page - Locate specified mode page
6482 * @mode_pages: mode page buffer
6483 * @page_code: page code to find
6484 * @len: minimum required length for mode page
6485 *
6486 * Return value:
6487 * pointer to mode page / NULL on failure
6488 **/
6489 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6490 u32 page_code, u32 len)
6491 {
6492 struct ipr_mode_page_hdr *mode_hdr;
6493 u32 page_length;
6494 u32 length;
6495
6496 if (!mode_pages || (mode_pages->hdr.length == 0))
6497 return NULL;
6498
6499 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6500 mode_hdr = (struct ipr_mode_page_hdr *)
6501 (mode_pages->data + mode_pages->hdr.block_desc_len);
6502
6503 while (length) {
6504 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6505 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6506 return mode_hdr;
6507 break;
6508 } else {
6509 page_length = (sizeof(struct ipr_mode_page_hdr) +
6510 mode_hdr->page_length);
6511 length -= page_length;
6512 mode_hdr = (struct ipr_mode_page_hdr *)
6513 ((unsigned long)mode_hdr + page_length);
6514 }
6515 }
6516 return NULL;
6517 }
6518
6519 /**
6520 * ipr_check_term_power - Check for term power errors
6521 * @ioa_cfg: ioa config struct
6522 * @mode_pages: IOAFP mode pages buffer
6523 *
6524 * Check the IOAFP's mode page 28 for term power errors
6525 *
6526 * Return value:
6527 * nothing
6528 **/
6529 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6530 struct ipr_mode_pages *mode_pages)
6531 {
6532 int i;
6533 int entry_length;
6534 struct ipr_dev_bus_entry *bus;
6535 struct ipr_mode_page28 *mode_page;
6536
6537 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6538 sizeof(struct ipr_mode_page28));
6539
6540 entry_length = mode_page->entry_length;
6541
6542 bus = mode_page->bus;
6543
6544 for (i = 0; i < mode_page->num_entries; i++) {
6545 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6546 dev_err(&ioa_cfg->pdev->dev,
6547 "Term power is absent on scsi bus %d\n",
6548 bus->res_addr.bus);
6549 }
6550
6551 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6552 }
6553 }
6554
6555 /**
6556 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6557 * @ioa_cfg: ioa config struct
6558 *
6559 * Looks through the config table checking for SES devices. If
6560 * the SES device is in the SES table indicating a maximum SCSI
6561 * bus speed, the speed is limited for the bus.
6562 *
6563 * Return value:
6564 * none
6565 **/
6566 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6567 {
6568 u32 max_xfer_rate;
6569 int i;
6570
6571 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6572 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6573 ioa_cfg->bus_attr[i].bus_width);
6574
6575 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6576 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6577 }
6578 }
6579
6580 /**
6581 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6582 * @ioa_cfg: ioa config struct
6583 * @mode_pages: mode page 28 buffer
6584 *
6585 * Updates mode page 28 based on driver configuration
6586 *
6587 * Return value:
6588 * none
6589 **/
6590 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6591 struct ipr_mode_pages *mode_pages)
6592 {
6593 int i, entry_length;
6594 struct ipr_dev_bus_entry *bus;
6595 struct ipr_bus_attributes *bus_attr;
6596 struct ipr_mode_page28 *mode_page;
6597
6598 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6599 sizeof(struct ipr_mode_page28));
6600
6601 entry_length = mode_page->entry_length;
6602
6603 /* Loop for each device bus entry */
6604 for (i = 0, bus = mode_page->bus;
6605 i < mode_page->num_entries;
6606 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6607 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6608 dev_err(&ioa_cfg->pdev->dev,
6609 "Invalid resource address reported: 0x%08X\n",
6610 IPR_GET_PHYS_LOC(bus->res_addr));
6611 continue;
6612 }
6613
6614 bus_attr = &ioa_cfg->bus_attr[i];
6615 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6616 bus->bus_width = bus_attr->bus_width;
6617 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6618 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6619 if (bus_attr->qas_enabled)
6620 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6621 else
6622 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6623 }
6624 }
6625
6626 /**
6627 * ipr_build_mode_select - Build a mode select command
6628 * @ipr_cmd: ipr command struct
6629 * @res_handle: resource handle to send command to
6630 * @parm: Byte 2 of Mode Sense command
6631 * @dma_addr: DMA buffer address
6632 * @xfer_len: data transfer length
6633 *
6634 * Return value:
6635 * none
6636 **/
6637 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
6638 __be32 res_handle, u8 parm,
6639 dma_addr_t dma_addr, u8 xfer_len)
6640 {
6641 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6642
6643 ioarcb->res_handle = res_handle;
6644 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6645 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6646 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6647 ioarcb->cmd_pkt.cdb[1] = parm;
6648 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6649
6650 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
6651 }
6652
6653 /**
6654 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6655 * @ipr_cmd: ipr command struct
6656 *
6657 * This function sets up the SCSI bus attributes and sends
6658 * a Mode Select for Page 28 to activate them.
6659 *
6660 * Return value:
6661 * IPR_RC_JOB_RETURN
6662 **/
6663 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6664 {
6665 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6666 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6667 int length;
6668
6669 ENTER;
6670 ipr_scsi_bus_speed_limit(ioa_cfg);
6671 ipr_check_term_power(ioa_cfg, mode_pages);
6672 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6673 length = mode_pages->hdr.length + 1;
6674 mode_pages->hdr.length = 0;
6675
6676 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6677 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6678 length);
6679
6680 ipr_cmd->job_step = ipr_set_supported_devs;
6681 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6682 struct ipr_resource_entry, queue);
6683 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6684
6685 LEAVE;
6686 return IPR_RC_JOB_RETURN;
6687 }
6688
6689 /**
6690 * ipr_build_mode_sense - Builds a mode sense command
6691 * @ipr_cmd: ipr command struct
6692 * @res: resource entry struct
6693 * @parm: Byte 2 of mode sense command
6694 * @dma_addr: DMA address of mode sense buffer
6695 * @xfer_len: Size of DMA buffer
6696 *
6697 * Return value:
6698 * none
6699 **/
6700 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6701 __be32 res_handle,
6702 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
6703 {
6704 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6705
6706 ioarcb->res_handle = res_handle;
6707 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6708 ioarcb->cmd_pkt.cdb[2] = parm;
6709 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6710 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6711
6712 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6713 }
6714
6715 /**
6716 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6717 * @ipr_cmd: ipr command struct
6718 *
6719 * This function handles the failure of an IOA bringup command.
6720 *
6721 * Return value:
6722 * IPR_RC_JOB_RETURN
6723 **/
6724 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6725 {
6726 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6727 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6728
6729 dev_err(&ioa_cfg->pdev->dev,
6730 "0x%02X failed with IOASC: 0x%08X\n",
6731 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6732
6733 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6734 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6735 return IPR_RC_JOB_RETURN;
6736 }
6737
6738 /**
6739 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6740 * @ipr_cmd: ipr command struct
6741 *
6742 * This function handles the failure of a Mode Sense to the IOAFP.
6743 * Some adapters do not handle all mode pages.
6744 *
6745 * Return value:
6746 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6747 **/
6748 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6749 {
6750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6751 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6752
6753 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6754 ipr_cmd->job_step = ipr_set_supported_devs;
6755 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6756 struct ipr_resource_entry, queue);
6757 return IPR_RC_JOB_CONTINUE;
6758 }
6759
6760 return ipr_reset_cmd_failed(ipr_cmd);
6761 }
6762
6763 /**
6764 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6765 * @ipr_cmd: ipr command struct
6766 *
6767 * This function send a Page 28 mode sense to the IOA to
6768 * retrieve SCSI bus attributes.
6769 *
6770 * Return value:
6771 * IPR_RC_JOB_RETURN
6772 **/
6773 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6774 {
6775 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6776
6777 ENTER;
6778 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6779 0x28, ioa_cfg->vpd_cbs_dma +
6780 offsetof(struct ipr_misc_cbs, mode_pages),
6781 sizeof(struct ipr_mode_pages));
6782
6783 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
6784 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
6785
6786 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6787
6788 LEAVE;
6789 return IPR_RC_JOB_RETURN;
6790 }
6791
6792 /**
6793 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6794 * @ipr_cmd: ipr command struct
6795 *
6796 * This function enables dual IOA RAID support if possible.
6797 *
6798 * Return value:
6799 * IPR_RC_JOB_RETURN
6800 **/
6801 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6802 {
6803 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6804 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6805 struct ipr_mode_page24 *mode_page;
6806 int length;
6807
6808 ENTER;
6809 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6810 sizeof(struct ipr_mode_page24));
6811
6812 if (mode_page)
6813 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6814
6815 length = mode_pages->hdr.length + 1;
6816 mode_pages->hdr.length = 0;
6817
6818 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6819 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6820 length);
6821
6822 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6823 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6824
6825 LEAVE;
6826 return IPR_RC_JOB_RETURN;
6827 }
6828
6829 /**
6830 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6831 * @ipr_cmd: ipr command struct
6832 *
6833 * This function handles the failure of a Mode Sense to the IOAFP.
6834 * Some adapters do not handle all mode pages.
6835 *
6836 * Return value:
6837 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6838 **/
6839 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6840 {
6841 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6842
6843 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6844 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6845 return IPR_RC_JOB_CONTINUE;
6846 }
6847
6848 return ipr_reset_cmd_failed(ipr_cmd);
6849 }
6850
6851 /**
6852 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6853 * @ipr_cmd: ipr command struct
6854 *
6855 * This function send a mode sense to the IOA to retrieve
6856 * the IOA Advanced Function Control mode page.
6857 *
6858 * Return value:
6859 * IPR_RC_JOB_RETURN
6860 **/
6861 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6862 {
6863 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6864
6865 ENTER;
6866 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6867 0x24, ioa_cfg->vpd_cbs_dma +
6868 offsetof(struct ipr_misc_cbs, mode_pages),
6869 sizeof(struct ipr_mode_pages));
6870
6871 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6872 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6873
6874 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6875
6876 LEAVE;
6877 return IPR_RC_JOB_RETURN;
6878 }
6879
6880 /**
6881 * ipr_init_res_table - Initialize the resource table
6882 * @ipr_cmd: ipr command struct
6883 *
6884 * This function looks through the existing resource table, comparing
6885 * it with the config table. This function will take care of old/new
6886 * devices and schedule adding/removing them from the mid-layer
6887 * as appropriate.
6888 *
6889 * Return value:
6890 * IPR_RC_JOB_CONTINUE
6891 **/
6892 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
6893 {
6894 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6895 struct ipr_resource_entry *res, *temp;
6896 struct ipr_config_table_entry_wrapper cfgtew;
6897 int entries, found, flag, i;
6898 LIST_HEAD(old_res);
6899
6900 ENTER;
6901 if (ioa_cfg->sis64)
6902 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
6903 else
6904 flag = ioa_cfg->u.cfg_table->hdr.flags;
6905
6906 if (flag & IPR_UCODE_DOWNLOAD_REQ)
6907 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6908
6909 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6910 list_move_tail(&res->queue, &old_res);
6911
6912 if (ioa_cfg->sis64)
6913 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
6914 else
6915 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
6916
6917 for (i = 0; i < entries; i++) {
6918 if (ioa_cfg->sis64)
6919 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
6920 else
6921 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
6922 found = 0;
6923
6924 list_for_each_entry_safe(res, temp, &old_res, queue) {
6925 if (ipr_is_same_device(res, &cfgtew)) {
6926 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6927 found = 1;
6928 break;
6929 }
6930 }
6931
6932 if (!found) {
6933 if (list_empty(&ioa_cfg->free_res_q)) {
6934 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6935 break;
6936 }
6937
6938 found = 1;
6939 res = list_entry(ioa_cfg->free_res_q.next,
6940 struct ipr_resource_entry, queue);
6941 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6942 ipr_init_res_entry(res, &cfgtew);
6943 res->add_to_ml = 1;
6944 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
6945 res->sdev->allow_restart = 1;
6946
6947 if (found)
6948 ipr_update_res_entry(res, &cfgtew);
6949 }
6950
6951 list_for_each_entry_safe(res, temp, &old_res, queue) {
6952 if (res->sdev) {
6953 res->del_from_ml = 1;
6954 res->res_handle = IPR_INVALID_RES_HANDLE;
6955 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6956 }
6957 }
6958
6959 list_for_each_entry_safe(res, temp, &old_res, queue) {
6960 ipr_clear_res_target(res);
6961 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6962 }
6963
6964 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6965 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6966 else
6967 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6968
6969 LEAVE;
6970 return IPR_RC_JOB_CONTINUE;
6971 }
6972
6973 /**
6974 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6975 * @ipr_cmd: ipr command struct
6976 *
6977 * This function sends a Query IOA Configuration command
6978 * to the adapter to retrieve the IOA configuration table.
6979 *
6980 * Return value:
6981 * IPR_RC_JOB_RETURN
6982 **/
6983 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6984 {
6985 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6986 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6987 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6988 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6989
6990 ENTER;
6991 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6992 ioa_cfg->dual_raid = 1;
6993 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6994 ucode_vpd->major_release, ucode_vpd->card_type,
6995 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6996 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6997 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6998
6999 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7000 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7001 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7002 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7003
7004 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7005 IPR_IOADL_FLAGS_READ_LAST);
7006
7007 ipr_cmd->job_step = ipr_init_res_table;
7008
7009 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7010
7011 LEAVE;
7012 return IPR_RC_JOB_RETURN;
7013 }
7014
7015 /**
7016 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7017 * @ipr_cmd: ipr command struct
7018 *
7019 * This utility function sends an inquiry to the adapter.
7020 *
7021 * Return value:
7022 * none
7023 **/
7024 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7025 dma_addr_t dma_addr, u8 xfer_len)
7026 {
7027 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7028
7029 ENTER;
7030 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7031 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7032
7033 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7034 ioarcb->cmd_pkt.cdb[1] = flags;
7035 ioarcb->cmd_pkt.cdb[2] = page;
7036 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7037
7038 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7039
7040 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7041 LEAVE;
7042 }
7043
7044 /**
7045 * ipr_inquiry_page_supported - Is the given inquiry page supported
7046 * @page0: inquiry page 0 buffer
7047 * @page: page code.
7048 *
7049 * This function determines if the specified inquiry page is supported.
7050 *
7051 * Return value:
7052 * 1 if page is supported / 0 if not
7053 **/
7054 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7055 {
7056 int i;
7057
7058 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7059 if (page0->page[i] == page)
7060 return 1;
7061
7062 return 0;
7063 }
7064
7065 /**
7066 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7067 * @ipr_cmd: ipr command struct
7068 *
7069 * This function sends a Page 0xD0 inquiry to the adapter
7070 * to retrieve adapter capabilities.
7071 *
7072 * Return value:
7073 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7074 **/
7075 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7076 {
7077 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7078 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7079 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7080
7081 ENTER;
7082 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7083 memset(cap, 0, sizeof(*cap));
7084
7085 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7086 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7087 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7088 sizeof(struct ipr_inquiry_cap));
7089 return IPR_RC_JOB_RETURN;
7090 }
7091
7092 LEAVE;
7093 return IPR_RC_JOB_CONTINUE;
7094 }
7095
7096 /**
7097 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7098 * @ipr_cmd: ipr command struct
7099 *
7100 * This function sends a Page 3 inquiry to the adapter
7101 * to retrieve software VPD information.
7102 *
7103 * Return value:
7104 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7105 **/
7106 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7107 {
7108 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7109
7110 ENTER;
7111
7112 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7113
7114 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7115 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7116 sizeof(struct ipr_inquiry_page3));
7117
7118 LEAVE;
7119 return IPR_RC_JOB_RETURN;
7120 }
7121
7122 /**
7123 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7124 * @ipr_cmd: ipr command struct
7125 *
7126 * This function sends a Page 0 inquiry to the adapter
7127 * to retrieve supported inquiry pages.
7128 *
7129 * Return value:
7130 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7131 **/
7132 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7133 {
7134 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7135 char type[5];
7136
7137 ENTER;
7138
7139 /* Grab the type out of the VPD and store it away */
7140 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7141 type[4] = '\0';
7142 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7143
7144 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7145
7146 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7147 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7148 sizeof(struct ipr_inquiry_page0));
7149
7150 LEAVE;
7151 return IPR_RC_JOB_RETURN;
7152 }
7153
7154 /**
7155 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7156 * @ipr_cmd: ipr command struct
7157 *
7158 * This function sends a standard inquiry to the adapter.
7159 *
7160 * Return value:
7161 * IPR_RC_JOB_RETURN
7162 **/
7163 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7164 {
7165 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7166
7167 ENTER;
7168 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7169
7170 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7171 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7172 sizeof(struct ipr_ioa_vpd));
7173
7174 LEAVE;
7175 return IPR_RC_JOB_RETURN;
7176 }
7177
7178 /**
7179 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7180 * @ipr_cmd: ipr command struct
7181 *
7182 * This function send an Identify Host Request Response Queue
7183 * command to establish the HRRQ with the adapter.
7184 *
7185 * Return value:
7186 * IPR_RC_JOB_RETURN
7187 **/
7188 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7189 {
7190 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7191 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7192
7193 ENTER;
7194 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7195
7196 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7197 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7198
7199 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7200 if (ioa_cfg->sis64)
7201 ioarcb->cmd_pkt.cdb[1] = 0x1;
7202 ioarcb->cmd_pkt.cdb[2] =
7203 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff;
7204 ioarcb->cmd_pkt.cdb[3] =
7205 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff;
7206 ioarcb->cmd_pkt.cdb[4] =
7207 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff;
7208 ioarcb->cmd_pkt.cdb[5] =
7209 ((u64) ioa_cfg->host_rrq_dma) & 0xff;
7210 ioarcb->cmd_pkt.cdb[7] =
7211 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
7212 ioarcb->cmd_pkt.cdb[8] =
7213 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
7214
7215 if (ioa_cfg->sis64) {
7216 ioarcb->cmd_pkt.cdb[10] =
7217 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff;
7218 ioarcb->cmd_pkt.cdb[11] =
7219 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff;
7220 ioarcb->cmd_pkt.cdb[12] =
7221 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff;
7222 ioarcb->cmd_pkt.cdb[13] =
7223 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff;
7224 }
7225
7226 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7227
7228 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7229
7230 LEAVE;
7231 return IPR_RC_JOB_RETURN;
7232 }
7233
7234 /**
7235 * ipr_reset_timer_done - Adapter reset timer function
7236 * @ipr_cmd: ipr command struct
7237 *
7238 * Description: This function is used in adapter reset processing
7239 * for timing events. If the reset_cmd pointer in the IOA
7240 * config struct is not this adapter's we are doing nested
7241 * resets and fail_all_ops will take care of freeing the
7242 * command block.
7243 *
7244 * Return value:
7245 * none
7246 **/
7247 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7248 {
7249 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7250 unsigned long lock_flags = 0;
7251
7252 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7253
7254 if (ioa_cfg->reset_cmd == ipr_cmd) {
7255 list_del(&ipr_cmd->queue);
7256 ipr_cmd->done(ipr_cmd);
7257 }
7258
7259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7260 }
7261
7262 /**
7263 * ipr_reset_start_timer - Start a timer for adapter reset job
7264 * @ipr_cmd: ipr command struct
7265 * @timeout: timeout value
7266 *
7267 * Description: This function is used in adapter reset processing
7268 * for timing events. If the reset_cmd pointer in the IOA
7269 * config struct is not this adapter's we are doing nested
7270 * resets and fail_all_ops will take care of freeing the
7271 * command block.
7272 *
7273 * Return value:
7274 * none
7275 **/
7276 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7277 unsigned long timeout)
7278 {
7279 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7280 ipr_cmd->done = ipr_reset_ioa_job;
7281
7282 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7283 ipr_cmd->timer.expires = jiffies + timeout;
7284 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7285 add_timer(&ipr_cmd->timer);
7286 }
7287
7288 /**
7289 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7290 * @ioa_cfg: ioa cfg struct
7291 *
7292 * Return value:
7293 * nothing
7294 **/
7295 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7296 {
7297 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
7298
7299 /* Initialize Host RRQ pointers */
7300 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
7301 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
7302 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
7303 ioa_cfg->toggle_bit = 1;
7304
7305 /* Zero out config table */
7306 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7307 }
7308
7309 /**
7310 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7311 * @ipr_cmd: ipr command struct
7312 *
7313 * Return value:
7314 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7315 **/
7316 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7317 {
7318 unsigned long stage, stage_time;
7319 u32 feedback;
7320 volatile u32 int_reg;
7321 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7322 u64 maskval = 0;
7323
7324 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7325 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7326 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7327
7328 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7329
7330 /* sanity check the stage_time value */
7331 if (stage_time == 0)
7332 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7333 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7334 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7335 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7336 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7337
7338 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7339 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7340 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7341 stage_time = ioa_cfg->transop_timeout;
7342 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7343 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7344 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7345 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7346 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7347 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7348 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7349 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7350 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7351 return IPR_RC_JOB_CONTINUE;
7352 }
7353 }
7354
7355 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7356 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7357 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7358 ipr_cmd->done = ipr_reset_ioa_job;
7359 add_timer(&ipr_cmd->timer);
7360 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7361
7362 return IPR_RC_JOB_RETURN;
7363 }
7364
7365 /**
7366 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7367 * @ipr_cmd: ipr command struct
7368 *
7369 * This function reinitializes some control blocks and
7370 * enables destructive diagnostics on the adapter.
7371 *
7372 * Return value:
7373 * IPR_RC_JOB_RETURN
7374 **/
7375 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7376 {
7377 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7378 volatile u32 int_reg;
7379 volatile u64 maskval;
7380
7381 ENTER;
7382 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7383 ipr_init_ioa_mem(ioa_cfg);
7384
7385 ioa_cfg->allow_interrupts = 1;
7386 if (ioa_cfg->sis64) {
7387 /* Set the adapter to the correct endian mode. */
7388 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7389 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7390 }
7391
7392 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7393
7394 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7395 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7396 ioa_cfg->regs.clr_interrupt_mask_reg32);
7397 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7398 return IPR_RC_JOB_CONTINUE;
7399 }
7400
7401 /* Enable destructive diagnostics on IOA */
7402 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7403
7404 if (ioa_cfg->sis64) {
7405 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7406 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7407 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7408 } else
7409 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7410
7411 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7412
7413 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7414
7415 if (ioa_cfg->sis64) {
7416 ipr_cmd->job_step = ipr_reset_next_stage;
7417 return IPR_RC_JOB_CONTINUE;
7418 }
7419
7420 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7421 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7422 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7423 ipr_cmd->done = ipr_reset_ioa_job;
7424 add_timer(&ipr_cmd->timer);
7425 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7426
7427 LEAVE;
7428 return IPR_RC_JOB_RETURN;
7429 }
7430
7431 /**
7432 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7433 * @ipr_cmd: ipr command struct
7434 *
7435 * This function is invoked when an adapter dump has run out
7436 * of processing time.
7437 *
7438 * Return value:
7439 * IPR_RC_JOB_CONTINUE
7440 **/
7441 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7442 {
7443 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7444
7445 if (ioa_cfg->sdt_state == GET_DUMP)
7446 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7447 else if (ioa_cfg->sdt_state == READ_DUMP)
7448 ioa_cfg->sdt_state = ABORT_DUMP;
7449
7450 ioa_cfg->dump_timeout = 1;
7451 ipr_cmd->job_step = ipr_reset_alert;
7452
7453 return IPR_RC_JOB_CONTINUE;
7454 }
7455
7456 /**
7457 * ipr_unit_check_no_data - Log a unit check/no data error log
7458 * @ioa_cfg: ioa config struct
7459 *
7460 * Logs an error indicating the adapter unit checked, but for some
7461 * reason, we were unable to fetch the unit check buffer.
7462 *
7463 * Return value:
7464 * nothing
7465 **/
7466 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7467 {
7468 ioa_cfg->errors_logged++;
7469 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7470 }
7471
7472 /**
7473 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7474 * @ioa_cfg: ioa config struct
7475 *
7476 * Fetches the unit check buffer from the adapter by clocking the data
7477 * through the mailbox register.
7478 *
7479 * Return value:
7480 * nothing
7481 **/
7482 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7483 {
7484 unsigned long mailbox;
7485 struct ipr_hostrcb *hostrcb;
7486 struct ipr_uc_sdt sdt;
7487 int rc, length;
7488 u32 ioasc;
7489
7490 mailbox = readl(ioa_cfg->ioa_mailbox);
7491
7492 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
7493 ipr_unit_check_no_data(ioa_cfg);
7494 return;
7495 }
7496
7497 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7498 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7499 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7500
7501 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7502 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7503 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
7504 ipr_unit_check_no_data(ioa_cfg);
7505 return;
7506 }
7507
7508 /* Find length of the first sdt entry (UC buffer) */
7509 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7510 length = be32_to_cpu(sdt.entry[0].end_token);
7511 else
7512 length = (be32_to_cpu(sdt.entry[0].end_token) -
7513 be32_to_cpu(sdt.entry[0].start_token)) &
7514 IPR_FMT2_MBX_ADDR_MASK;
7515
7516 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7517 struct ipr_hostrcb, queue);
7518 list_del(&hostrcb->queue);
7519 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7520
7521 rc = ipr_get_ldump_data_section(ioa_cfg,
7522 be32_to_cpu(sdt.entry[0].start_token),
7523 (__be32 *)&hostrcb->hcam,
7524 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7525
7526 if (!rc) {
7527 ipr_handle_log_data(ioa_cfg, hostrcb);
7528 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
7529 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7530 ioa_cfg->sdt_state == GET_DUMP)
7531 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7532 } else
7533 ipr_unit_check_no_data(ioa_cfg);
7534
7535 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7536 }
7537
7538 /**
7539 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
7540 * @ipr_cmd: ipr command struct
7541 *
7542 * Description: This function will call to get the unit check buffer.
7543 *
7544 * Return value:
7545 * IPR_RC_JOB_RETURN
7546 **/
7547 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
7548 {
7549 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7550
7551 ENTER;
7552 ioa_cfg->ioa_unit_checked = 0;
7553 ipr_get_unit_check_buffer(ioa_cfg);
7554 ipr_cmd->job_step = ipr_reset_alert;
7555 ipr_reset_start_timer(ipr_cmd, 0);
7556
7557 LEAVE;
7558 return IPR_RC_JOB_RETURN;
7559 }
7560
7561 /**
7562 * ipr_reset_restore_cfg_space - Restore PCI config space.
7563 * @ipr_cmd: ipr command struct
7564 *
7565 * Description: This function restores the saved PCI config space of
7566 * the adapter, fails all outstanding ops back to the callers, and
7567 * fetches the dump/unit check if applicable to this reset.
7568 *
7569 * Return value:
7570 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7571 **/
7572 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7573 {
7574 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7575 u32 int_reg;
7576
7577 ENTER;
7578 ioa_cfg->pdev->state_saved = true;
7579 pci_restore_state(ioa_cfg->pdev);
7580
7581 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
7582 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7583 return IPR_RC_JOB_CONTINUE;
7584 }
7585
7586 ipr_fail_all_ops(ioa_cfg);
7587
7588 if (ioa_cfg->sis64) {
7589 /* Set the adapter to the correct endian mode. */
7590 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7591 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7592 }
7593
7594 if (ioa_cfg->ioa_unit_checked) {
7595 if (ioa_cfg->sis64) {
7596 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
7597 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
7598 return IPR_RC_JOB_RETURN;
7599 } else {
7600 ioa_cfg->ioa_unit_checked = 0;
7601 ipr_get_unit_check_buffer(ioa_cfg);
7602 ipr_cmd->job_step = ipr_reset_alert;
7603 ipr_reset_start_timer(ipr_cmd, 0);
7604 return IPR_RC_JOB_RETURN;
7605 }
7606 }
7607
7608 if (ioa_cfg->in_ioa_bringdown) {
7609 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7610 } else {
7611 ipr_cmd->job_step = ipr_reset_enable_ioa;
7612
7613 if (GET_DUMP == ioa_cfg->sdt_state) {
7614 ioa_cfg->sdt_state = READ_DUMP;
7615 ioa_cfg->dump_timeout = 0;
7616 if (ioa_cfg->sis64)
7617 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
7618 else
7619 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
7620 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7621 schedule_work(&ioa_cfg->work_q);
7622 return IPR_RC_JOB_RETURN;
7623 }
7624 }
7625
7626 LEAVE;
7627 return IPR_RC_JOB_CONTINUE;
7628 }
7629
7630 /**
7631 * ipr_reset_bist_done - BIST has completed on the adapter.
7632 * @ipr_cmd: ipr command struct
7633 *
7634 * Description: Unblock config space and resume the reset process.
7635 *
7636 * Return value:
7637 * IPR_RC_JOB_CONTINUE
7638 **/
7639 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7640 {
7641 ENTER;
7642 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7643 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7644 LEAVE;
7645 return IPR_RC_JOB_CONTINUE;
7646 }
7647
7648 /**
7649 * ipr_reset_start_bist - Run BIST on the adapter.
7650 * @ipr_cmd: ipr command struct
7651 *
7652 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7653 *
7654 * Return value:
7655 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7656 **/
7657 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7658 {
7659 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7660 int rc = PCIBIOS_SUCCESSFUL;
7661
7662 ENTER;
7663 pci_block_user_cfg_access(ioa_cfg->pdev);
7664
7665 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
7666 writel(IPR_UPROCI_SIS64_START_BIST,
7667 ioa_cfg->regs.set_uproc_interrupt_reg32);
7668 else
7669 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7670
7671 if (rc == PCIBIOS_SUCCESSFUL) {
7672 ipr_cmd->job_step = ipr_reset_bist_done;
7673 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7674 rc = IPR_RC_JOB_RETURN;
7675 } else {
7676 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7677 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7678 rc = IPR_RC_JOB_CONTINUE;
7679 }
7680
7681 LEAVE;
7682 return rc;
7683 }
7684
7685 /**
7686 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7687 * @ipr_cmd: ipr command struct
7688 *
7689 * Description: This clears PCI reset to the adapter and delays two seconds.
7690 *
7691 * Return value:
7692 * IPR_RC_JOB_RETURN
7693 **/
7694 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7695 {
7696 ENTER;
7697 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
7698 ipr_cmd->job_step = ipr_reset_bist_done;
7699 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7700 LEAVE;
7701 return IPR_RC_JOB_RETURN;
7702 }
7703
7704 /**
7705 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
7706 * @ipr_cmd: ipr command struct
7707 *
7708 * Description: This asserts PCI reset to the adapter.
7709 *
7710 * Return value:
7711 * IPR_RC_JOB_RETURN
7712 **/
7713 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
7714 {
7715 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7716 struct pci_dev *pdev = ioa_cfg->pdev;
7717
7718 ENTER;
7719 pci_block_user_cfg_access(pdev);
7720 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7721 ipr_cmd->job_step = ipr_reset_slot_reset_done;
7722 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
7723 LEAVE;
7724 return IPR_RC_JOB_RETURN;
7725 }
7726
7727 /**
7728 * ipr_reset_allowed - Query whether or not IOA can be reset
7729 * @ioa_cfg: ioa config struct
7730 *
7731 * Return value:
7732 * 0 if reset not allowed / non-zero if reset is allowed
7733 **/
7734 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
7735 {
7736 volatile u32 temp_reg;
7737
7738 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7739 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
7740 }
7741
7742 /**
7743 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
7744 * @ipr_cmd: ipr command struct
7745 *
7746 * Description: This function waits for adapter permission to run BIST,
7747 * then runs BIST. If the adapter does not give permission after a
7748 * reasonable time, we will reset the adapter anyway. The impact of
7749 * resetting the adapter without warning the adapter is the risk of
7750 * losing the persistent error log on the adapter. If the adapter is
7751 * reset while it is writing to the flash on the adapter, the flash
7752 * segment will have bad ECC and be zeroed.
7753 *
7754 * Return value:
7755 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7756 **/
7757 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
7758 {
7759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7760 int rc = IPR_RC_JOB_RETURN;
7761
7762 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
7763 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7764 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7765 } else {
7766 ipr_cmd->job_step = ioa_cfg->reset;
7767 rc = IPR_RC_JOB_CONTINUE;
7768 }
7769
7770 return rc;
7771 }
7772
7773 /**
7774 * ipr_reset_alert - Alert the adapter of a pending reset
7775 * @ipr_cmd: ipr command struct
7776 *
7777 * Description: This function alerts the adapter that it will be reset.
7778 * If memory space is not currently enabled, proceed directly
7779 * to running BIST on the adapter. The timer must always be started
7780 * so we guarantee we do not run BIST from ipr_isr.
7781 *
7782 * Return value:
7783 * IPR_RC_JOB_RETURN
7784 **/
7785 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
7786 {
7787 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7788 u16 cmd_reg;
7789 int rc;
7790
7791 ENTER;
7792 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
7793
7794 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
7795 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
7796 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
7797 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
7798 } else {
7799 ipr_cmd->job_step = ioa_cfg->reset;
7800 }
7801
7802 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7803 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7804
7805 LEAVE;
7806 return IPR_RC_JOB_RETURN;
7807 }
7808
7809 /**
7810 * ipr_reset_ucode_download_done - Microcode download completion
7811 * @ipr_cmd: ipr command struct
7812 *
7813 * Description: This function unmaps the microcode download buffer.
7814 *
7815 * Return value:
7816 * IPR_RC_JOB_CONTINUE
7817 **/
7818 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
7819 {
7820 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7821 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7822
7823 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
7824 sglist->num_sg, DMA_TO_DEVICE);
7825
7826 ipr_cmd->job_step = ipr_reset_alert;
7827 return IPR_RC_JOB_CONTINUE;
7828 }
7829
7830 /**
7831 * ipr_reset_ucode_download - Download microcode to the adapter
7832 * @ipr_cmd: ipr command struct
7833 *
7834 * Description: This function checks to see if it there is microcode
7835 * to download to the adapter. If there is, a download is performed.
7836 *
7837 * Return value:
7838 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7839 **/
7840 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
7841 {
7842 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7843 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7844
7845 ENTER;
7846 ipr_cmd->job_step = ipr_reset_alert;
7847
7848 if (!sglist)
7849 return IPR_RC_JOB_CONTINUE;
7850
7851 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7852 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7853 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
7854 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
7855 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
7856 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
7857 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
7858
7859 if (ioa_cfg->sis64)
7860 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
7861 else
7862 ipr_build_ucode_ioadl(ipr_cmd, sglist);
7863 ipr_cmd->job_step = ipr_reset_ucode_download_done;
7864
7865 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7866 IPR_WRITE_BUFFER_TIMEOUT);
7867
7868 LEAVE;
7869 return IPR_RC_JOB_RETURN;
7870 }
7871
7872 /**
7873 * ipr_reset_shutdown_ioa - Shutdown the adapter
7874 * @ipr_cmd: ipr command struct
7875 *
7876 * Description: This function issues an adapter shutdown of the
7877 * specified type to the specified adapter as part of the
7878 * adapter reset job.
7879 *
7880 * Return value:
7881 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7882 **/
7883 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
7884 {
7885 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7886 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
7887 unsigned long timeout;
7888 int rc = IPR_RC_JOB_CONTINUE;
7889
7890 ENTER;
7891 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
7892 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7893 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7894 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
7895 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
7896
7897 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
7898 timeout = IPR_SHUTDOWN_TIMEOUT;
7899 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
7900 timeout = IPR_INTERNAL_TIMEOUT;
7901 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7902 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
7903 else
7904 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
7905
7906 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
7907
7908 rc = IPR_RC_JOB_RETURN;
7909 ipr_cmd->job_step = ipr_reset_ucode_download;
7910 } else
7911 ipr_cmd->job_step = ipr_reset_alert;
7912
7913 LEAVE;
7914 return rc;
7915 }
7916
7917 /**
7918 * ipr_reset_ioa_job - Adapter reset job
7919 * @ipr_cmd: ipr command struct
7920 *
7921 * Description: This function is the job router for the adapter reset job.
7922 *
7923 * Return value:
7924 * none
7925 **/
7926 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
7927 {
7928 u32 rc, ioasc;
7929 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7930
7931 do {
7932 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7933
7934 if (ioa_cfg->reset_cmd != ipr_cmd) {
7935 /*
7936 * We are doing nested adapter resets and this is
7937 * not the current reset job.
7938 */
7939 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7940 return;
7941 }
7942
7943 if (IPR_IOASC_SENSE_KEY(ioasc)) {
7944 rc = ipr_cmd->job_step_failed(ipr_cmd);
7945 if (rc == IPR_RC_JOB_RETURN)
7946 return;
7947 }
7948
7949 ipr_reinit_ipr_cmnd(ipr_cmd);
7950 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
7951 rc = ipr_cmd->job_step(ipr_cmd);
7952 } while(rc == IPR_RC_JOB_CONTINUE);
7953 }
7954
7955 /**
7956 * _ipr_initiate_ioa_reset - Initiate an adapter reset
7957 * @ioa_cfg: ioa config struct
7958 * @job_step: first job step of reset job
7959 * @shutdown_type: shutdown type
7960 *
7961 * Description: This function will initiate the reset of the given adapter
7962 * starting at the selected job step.
7963 * If the caller needs to wait on the completion of the reset,
7964 * the caller must sleep on the reset_wait_q.
7965 *
7966 * Return value:
7967 * none
7968 **/
7969 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7970 int (*job_step) (struct ipr_cmnd *),
7971 enum ipr_shutdown_type shutdown_type)
7972 {
7973 struct ipr_cmnd *ipr_cmd;
7974
7975 ioa_cfg->in_reset_reload = 1;
7976 ioa_cfg->allow_cmds = 0;
7977 scsi_block_requests(ioa_cfg->host);
7978
7979 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
7980 ioa_cfg->reset_cmd = ipr_cmd;
7981 ipr_cmd->job_step = job_step;
7982 ipr_cmd->u.shutdown_type = shutdown_type;
7983
7984 ipr_reset_ioa_job(ipr_cmd);
7985 }
7986
7987 /**
7988 * ipr_initiate_ioa_reset - Initiate an adapter reset
7989 * @ioa_cfg: ioa config struct
7990 * @shutdown_type: shutdown type
7991 *
7992 * Description: This function will initiate the reset of the given adapter.
7993 * If the caller needs to wait on the completion of the reset,
7994 * the caller must sleep on the reset_wait_q.
7995 *
7996 * Return value:
7997 * none
7998 **/
7999 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8000 enum ipr_shutdown_type shutdown_type)
8001 {
8002 if (ioa_cfg->ioa_is_dead)
8003 return;
8004
8005 if (ioa_cfg->in_reset_reload) {
8006 if (ioa_cfg->sdt_state == GET_DUMP)
8007 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8008 else if (ioa_cfg->sdt_state == READ_DUMP)
8009 ioa_cfg->sdt_state = ABORT_DUMP;
8010 }
8011
8012 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
8013 dev_err(&ioa_cfg->pdev->dev,
8014 "IOA taken offline - error recovery failed\n");
8015
8016 ioa_cfg->reset_retries = 0;
8017 ioa_cfg->ioa_is_dead = 1;
8018
8019 if (ioa_cfg->in_ioa_bringdown) {
8020 ioa_cfg->reset_cmd = NULL;
8021 ioa_cfg->in_reset_reload = 0;
8022 ipr_fail_all_ops(ioa_cfg);
8023 wake_up_all(&ioa_cfg->reset_wait_q);
8024
8025 spin_unlock_irq(ioa_cfg->host->host_lock);
8026 scsi_unblock_requests(ioa_cfg->host);
8027 spin_lock_irq(ioa_cfg->host->host_lock);
8028 return;
8029 } else {
8030 ioa_cfg->in_ioa_bringdown = 1;
8031 shutdown_type = IPR_SHUTDOWN_NONE;
8032 }
8033 }
8034
8035 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
8036 shutdown_type);
8037 }
8038
8039 /**
8040 * ipr_reset_freeze - Hold off all I/O activity
8041 * @ipr_cmd: ipr command struct
8042 *
8043 * Description: If the PCI slot is frozen, hold off all I/O
8044 * activity; then, as soon as the slot is available again,
8045 * initiate an adapter reset.
8046 */
8047 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
8048 {
8049 /* Disallow new interrupts, avoid loop */
8050 ipr_cmd->ioa_cfg->allow_interrupts = 0;
8051 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
8052 ipr_cmd->done = ipr_reset_ioa_job;
8053 return IPR_RC_JOB_RETURN;
8054 }
8055
8056 /**
8057 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
8058 * @pdev: PCI device struct
8059 *
8060 * Description: This routine is called to tell us that the PCI bus
8061 * is down. Can't do anything here, except put the device driver
8062 * into a holding pattern, waiting for the PCI bus to come back.
8063 */
8064 static void ipr_pci_frozen(struct pci_dev *pdev)
8065 {
8066 unsigned long flags = 0;
8067 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8068
8069 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8070 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
8071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8072 }
8073
8074 /**
8075 * ipr_pci_slot_reset - Called when PCI slot has been reset.
8076 * @pdev: PCI device struct
8077 *
8078 * Description: This routine is called by the pci error recovery
8079 * code after the PCI slot has been reset, just before we
8080 * should resume normal operations.
8081 */
8082 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
8083 {
8084 unsigned long flags = 0;
8085 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8086
8087 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8088 if (ioa_cfg->needs_warm_reset)
8089 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8090 else
8091 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
8092 IPR_SHUTDOWN_NONE);
8093 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8094 return PCI_ERS_RESULT_RECOVERED;
8095 }
8096
8097 /**
8098 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
8099 * @pdev: PCI device struct
8100 *
8101 * Description: This routine is called when the PCI bus has
8102 * permanently failed.
8103 */
8104 static void ipr_pci_perm_failure(struct pci_dev *pdev)
8105 {
8106 unsigned long flags = 0;
8107 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8108
8109 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8110 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8111 ioa_cfg->sdt_state = ABORT_DUMP;
8112 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
8113 ioa_cfg->in_ioa_bringdown = 1;
8114 ioa_cfg->allow_cmds = 0;
8115 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8116 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8117 }
8118
8119 /**
8120 * ipr_pci_error_detected - Called when a PCI error is detected.
8121 * @pdev: PCI device struct
8122 * @state: PCI channel state
8123 *
8124 * Description: Called when a PCI error is detected.
8125 *
8126 * Return value:
8127 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8128 */
8129 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8130 pci_channel_state_t state)
8131 {
8132 switch (state) {
8133 case pci_channel_io_frozen:
8134 ipr_pci_frozen(pdev);
8135 return PCI_ERS_RESULT_NEED_RESET;
8136 case pci_channel_io_perm_failure:
8137 ipr_pci_perm_failure(pdev);
8138 return PCI_ERS_RESULT_DISCONNECT;
8139 break;
8140 default:
8141 break;
8142 }
8143 return PCI_ERS_RESULT_NEED_RESET;
8144 }
8145
8146 /**
8147 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8148 * @ioa_cfg: ioa cfg struct
8149 *
8150 * Description: This is the second phase of adapter intialization
8151 * This function takes care of initilizing the adapter to the point
8152 * where it can accept new commands.
8153
8154 * Return value:
8155 * 0 on success / -EIO on failure
8156 **/
8157 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8158 {
8159 int rc = 0;
8160 unsigned long host_lock_flags = 0;
8161
8162 ENTER;
8163 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8164 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
8165 if (ioa_cfg->needs_hard_reset) {
8166 ioa_cfg->needs_hard_reset = 0;
8167 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8168 } else
8169 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8170 IPR_SHUTDOWN_NONE);
8171
8172 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8173 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8174 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8175
8176 if (ioa_cfg->ioa_is_dead) {
8177 rc = -EIO;
8178 } else if (ipr_invalid_adapter(ioa_cfg)) {
8179 if (!ipr_testmode)
8180 rc = -EIO;
8181
8182 dev_err(&ioa_cfg->pdev->dev,
8183 "Adapter not supported in this hardware configuration.\n");
8184 }
8185
8186 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8187
8188 LEAVE;
8189 return rc;
8190 }
8191
8192 /**
8193 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8194 * @ioa_cfg: ioa config struct
8195 *
8196 * Return value:
8197 * none
8198 **/
8199 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8200 {
8201 int i;
8202
8203 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8204 if (ioa_cfg->ipr_cmnd_list[i])
8205 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8206 ioa_cfg->ipr_cmnd_list[i],
8207 ioa_cfg->ipr_cmnd_list_dma[i]);
8208
8209 ioa_cfg->ipr_cmnd_list[i] = NULL;
8210 }
8211
8212 if (ioa_cfg->ipr_cmd_pool)
8213 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
8214
8215 ioa_cfg->ipr_cmd_pool = NULL;
8216 }
8217
8218 /**
8219 * ipr_free_mem - Frees memory allocated for an adapter
8220 * @ioa_cfg: ioa cfg struct
8221 *
8222 * Return value:
8223 * nothing
8224 **/
8225 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8226 {
8227 int i;
8228
8229 kfree(ioa_cfg->res_entries);
8230 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8231 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8232 ipr_free_cmd_blks(ioa_cfg);
8233 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8234 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8235 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8236 ioa_cfg->u.cfg_table,
8237 ioa_cfg->cfg_table_dma);
8238
8239 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8240 pci_free_consistent(ioa_cfg->pdev,
8241 sizeof(struct ipr_hostrcb),
8242 ioa_cfg->hostrcb[i],
8243 ioa_cfg->hostrcb_dma[i]);
8244 }
8245
8246 ipr_free_dump(ioa_cfg);
8247 kfree(ioa_cfg->trace);
8248 }
8249
8250 /**
8251 * ipr_free_all_resources - Free all allocated resources for an adapter.
8252 * @ipr_cmd: ipr command struct
8253 *
8254 * This function frees all allocated resources for the
8255 * specified adapter.
8256 *
8257 * Return value:
8258 * none
8259 **/
8260 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8261 {
8262 struct pci_dev *pdev = ioa_cfg->pdev;
8263
8264 ENTER;
8265 free_irq(pdev->irq, ioa_cfg);
8266 pci_disable_msi(pdev);
8267 iounmap(ioa_cfg->hdw_dma_regs);
8268 pci_release_regions(pdev);
8269 ipr_free_mem(ioa_cfg);
8270 scsi_host_put(ioa_cfg->host);
8271 pci_disable_device(pdev);
8272 LEAVE;
8273 }
8274
8275 /**
8276 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8277 * @ioa_cfg: ioa config struct
8278 *
8279 * Return value:
8280 * 0 on success / -ENOMEM on allocation failure
8281 **/
8282 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8283 {
8284 struct ipr_cmnd *ipr_cmd;
8285 struct ipr_ioarcb *ioarcb;
8286 dma_addr_t dma_addr;
8287 int i;
8288
8289 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
8290 sizeof(struct ipr_cmnd), 16, 0);
8291
8292 if (!ioa_cfg->ipr_cmd_pool)
8293 return -ENOMEM;
8294
8295 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8296 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
8297
8298 if (!ipr_cmd) {
8299 ipr_free_cmd_blks(ioa_cfg);
8300 return -ENOMEM;
8301 }
8302
8303 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8304 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8305 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8306
8307 ioarcb = &ipr_cmd->ioarcb;
8308 ipr_cmd->dma_addr = dma_addr;
8309 if (ioa_cfg->sis64)
8310 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8311 else
8312 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8313
8314 ioarcb->host_response_handle = cpu_to_be32(i << 2);
8315 if (ioa_cfg->sis64) {
8316 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8317 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8318 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
8319 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
8320 } else {
8321 ioarcb->write_ioadl_addr =
8322 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8323 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8324 ioarcb->ioasa_host_pci_addr =
8325 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
8326 }
8327 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8328 ipr_cmd->cmd_index = i;
8329 ipr_cmd->ioa_cfg = ioa_cfg;
8330 ipr_cmd->sense_buffer_dma = dma_addr +
8331 offsetof(struct ipr_cmnd, sense_buffer);
8332
8333 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8334 }
8335
8336 return 0;
8337 }
8338
8339 /**
8340 * ipr_alloc_mem - Allocate memory for an adapter
8341 * @ioa_cfg: ioa config struct
8342 *
8343 * Return value:
8344 * 0 on success / non-zero for error
8345 **/
8346 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8347 {
8348 struct pci_dev *pdev = ioa_cfg->pdev;
8349 int i, rc = -ENOMEM;
8350
8351 ENTER;
8352 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
8353 ioa_cfg->max_devs_supported, GFP_KERNEL);
8354
8355 if (!ioa_cfg->res_entries)
8356 goto out;
8357
8358 if (ioa_cfg->sis64) {
8359 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8360 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8361 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8362 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8363 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8364 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8365 }
8366
8367 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
8368 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
8369 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8370 }
8371
8372 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8373 sizeof(struct ipr_misc_cbs),
8374 &ioa_cfg->vpd_cbs_dma);
8375
8376 if (!ioa_cfg->vpd_cbs)
8377 goto out_free_res_entries;
8378
8379 if (ipr_alloc_cmd_blks(ioa_cfg))
8380 goto out_free_vpd_cbs;
8381
8382 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
8383 sizeof(u32) * IPR_NUM_CMD_BLKS,
8384 &ioa_cfg->host_rrq_dma);
8385
8386 if (!ioa_cfg->host_rrq)
8387 goto out_ipr_free_cmd_blocks;
8388
8389 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
8390 ioa_cfg->cfg_table_size,
8391 &ioa_cfg->cfg_table_dma);
8392
8393 if (!ioa_cfg->u.cfg_table)
8394 goto out_free_host_rrq;
8395
8396 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8397 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
8398 sizeof(struct ipr_hostrcb),
8399 &ioa_cfg->hostrcb_dma[i]);
8400
8401 if (!ioa_cfg->hostrcb[i])
8402 goto out_free_hostrcb_dma;
8403
8404 ioa_cfg->hostrcb[i]->hostrcb_dma =
8405 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
8406 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
8407 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
8408 }
8409
8410 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
8411 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
8412
8413 if (!ioa_cfg->trace)
8414 goto out_free_hostrcb_dma;
8415
8416 rc = 0;
8417 out:
8418 LEAVE;
8419 return rc;
8420
8421 out_free_hostrcb_dma:
8422 while (i-- > 0) {
8423 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
8424 ioa_cfg->hostrcb[i],
8425 ioa_cfg->hostrcb_dma[i]);
8426 }
8427 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
8428 ioa_cfg->u.cfg_table,
8429 ioa_cfg->cfg_table_dma);
8430 out_free_host_rrq:
8431 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8432 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8433 out_ipr_free_cmd_blocks:
8434 ipr_free_cmd_blks(ioa_cfg);
8435 out_free_vpd_cbs:
8436 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
8437 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8438 out_free_res_entries:
8439 kfree(ioa_cfg->res_entries);
8440 goto out;
8441 }
8442
8443 /**
8444 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
8445 * @ioa_cfg: ioa config struct
8446 *
8447 * Return value:
8448 * none
8449 **/
8450 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
8451 {
8452 int i;
8453
8454 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
8455 ioa_cfg->bus_attr[i].bus = i;
8456 ioa_cfg->bus_attr[i].qas_enabled = 0;
8457 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
8458 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
8459 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
8460 else
8461 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
8462 }
8463 }
8464
8465 /**
8466 * ipr_init_ioa_cfg - Initialize IOA config struct
8467 * @ioa_cfg: ioa config struct
8468 * @host: scsi host struct
8469 * @pdev: PCI dev struct
8470 *
8471 * Return value:
8472 * none
8473 **/
8474 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
8475 struct Scsi_Host *host, struct pci_dev *pdev)
8476 {
8477 const struct ipr_interrupt_offsets *p;
8478 struct ipr_interrupts *t;
8479 void __iomem *base;
8480
8481 ioa_cfg->host = host;
8482 ioa_cfg->pdev = pdev;
8483 ioa_cfg->log_level = ipr_log_level;
8484 ioa_cfg->doorbell = IPR_DOORBELL;
8485 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
8486 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
8487 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
8488 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
8489 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
8490 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
8491 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
8492 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
8493
8494 INIT_LIST_HEAD(&ioa_cfg->free_q);
8495 INIT_LIST_HEAD(&ioa_cfg->pending_q);
8496 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
8497 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
8498 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
8499 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
8500 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
8501 init_waitqueue_head(&ioa_cfg->reset_wait_q);
8502 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8503 ioa_cfg->sdt_state = INACTIVE;
8504
8505 ipr_initialize_bus_attr(ioa_cfg);
8506 ioa_cfg->max_devs_supported = ipr_max_devs;
8507
8508 if (ioa_cfg->sis64) {
8509 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
8510 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
8511 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
8512 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
8513 } else {
8514 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
8515 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
8516 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
8517 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
8518 }
8519 host->max_channel = IPR_MAX_BUS_TO_SCAN;
8520 host->unique_id = host->host_no;
8521 host->max_cmd_len = IPR_MAX_CDB_LEN;
8522 pci_set_drvdata(pdev, ioa_cfg);
8523
8524 p = &ioa_cfg->chip_cfg->regs;
8525 t = &ioa_cfg->regs;
8526 base = ioa_cfg->hdw_dma_regs;
8527
8528 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
8529 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
8530 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
8531 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
8532 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
8533 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
8534 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
8535 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
8536 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
8537 t->ioarrin_reg = base + p->ioarrin_reg;
8538 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
8539 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
8540 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
8541 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
8542 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
8543 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
8544
8545 if (ioa_cfg->sis64) {
8546 t->init_feedback_reg = base + p->init_feedback_reg;
8547 t->dump_addr_reg = base + p->dump_addr_reg;
8548 t->dump_data_reg = base + p->dump_data_reg;
8549 t->endian_swap_reg = base + p->endian_swap_reg;
8550 }
8551 }
8552
8553 /**
8554 * ipr_get_chip_info - Find adapter chip information
8555 * @dev_id: PCI device id struct
8556 *
8557 * Return value:
8558 * ptr to chip information on success / NULL on failure
8559 **/
8560 static const struct ipr_chip_t * __devinit
8561 ipr_get_chip_info(const struct pci_device_id *dev_id)
8562 {
8563 int i;
8564
8565 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
8566 if (ipr_chip[i].vendor == dev_id->vendor &&
8567 ipr_chip[i].device == dev_id->device)
8568 return &ipr_chip[i];
8569 return NULL;
8570 }
8571
8572 /**
8573 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
8574 * @pdev: PCI device struct
8575 *
8576 * Description: Simply set the msi_received flag to 1 indicating that
8577 * Message Signaled Interrupts are supported.
8578 *
8579 * Return value:
8580 * 0 on success / non-zero on failure
8581 **/
8582 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
8583 {
8584 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
8585 unsigned long lock_flags = 0;
8586 irqreturn_t rc = IRQ_HANDLED;
8587
8588 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8589
8590 ioa_cfg->msi_received = 1;
8591 wake_up(&ioa_cfg->msi_wait_q);
8592
8593 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8594 return rc;
8595 }
8596
8597 /**
8598 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
8599 * @pdev: PCI device struct
8600 *
8601 * Description: The return value from pci_enable_msi() can not always be
8602 * trusted. This routine sets up and initiates a test interrupt to determine
8603 * if the interrupt is received via the ipr_test_intr() service routine.
8604 * If the tests fails, the driver will fall back to LSI.
8605 *
8606 * Return value:
8607 * 0 on success / non-zero on failure
8608 **/
8609 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
8610 struct pci_dev *pdev)
8611 {
8612 int rc;
8613 volatile u32 int_reg;
8614 unsigned long lock_flags = 0;
8615
8616 ENTER;
8617
8618 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8619 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8620 ioa_cfg->msi_received = 0;
8621 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8622 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
8623 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8624 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8625
8626 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
8627 if (rc) {
8628 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
8629 return rc;
8630 } else if (ipr_debug)
8631 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
8632
8633 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
8634 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8635 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
8636 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8637
8638 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8639 if (!ioa_cfg->msi_received) {
8640 /* MSI test failed */
8641 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
8642 rc = -EOPNOTSUPP;
8643 } else if (ipr_debug)
8644 dev_info(&pdev->dev, "MSI test succeeded.\n");
8645
8646 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8647
8648 free_irq(pdev->irq, ioa_cfg);
8649
8650 LEAVE;
8651
8652 return rc;
8653 }
8654
8655 /**
8656 * ipr_probe_ioa - Allocates memory and does first stage of initialization
8657 * @pdev: PCI device struct
8658 * @dev_id: PCI device id struct
8659 *
8660 * Return value:
8661 * 0 on success / non-zero on failure
8662 **/
8663 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
8664 const struct pci_device_id *dev_id)
8665 {
8666 struct ipr_ioa_cfg *ioa_cfg;
8667 struct Scsi_Host *host;
8668 unsigned long ipr_regs_pci;
8669 void __iomem *ipr_regs;
8670 int rc = PCIBIOS_SUCCESSFUL;
8671 volatile u32 mask, uproc, interrupts;
8672
8673 ENTER;
8674
8675 if ((rc = pci_enable_device(pdev))) {
8676 dev_err(&pdev->dev, "Cannot enable adapter\n");
8677 goto out;
8678 }
8679
8680 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
8681
8682 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
8683
8684 if (!host) {
8685 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
8686 rc = -ENOMEM;
8687 goto out_disable;
8688 }
8689
8690 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
8691 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
8692 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
8693 sata_port_info.flags, &ipr_sata_ops);
8694
8695 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
8696
8697 if (!ioa_cfg->ipr_chip) {
8698 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
8699 dev_id->vendor, dev_id->device);
8700 goto out_scsi_host_put;
8701 }
8702
8703 /* set SIS 32 or SIS 64 */
8704 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
8705 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
8706
8707 if (ipr_transop_timeout)
8708 ioa_cfg->transop_timeout = ipr_transop_timeout;
8709 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
8710 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
8711 else
8712 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
8713
8714 ioa_cfg->revid = pdev->revision;
8715
8716 ipr_regs_pci = pci_resource_start(pdev, 0);
8717
8718 rc = pci_request_regions(pdev, IPR_NAME);
8719 if (rc < 0) {
8720 dev_err(&pdev->dev,
8721 "Couldn't register memory range of registers\n");
8722 goto out_scsi_host_put;
8723 }
8724
8725 ipr_regs = pci_ioremap_bar(pdev, 0);
8726
8727 if (!ipr_regs) {
8728 dev_err(&pdev->dev,
8729 "Couldn't map memory range of registers\n");
8730 rc = -ENOMEM;
8731 goto out_release_regions;
8732 }
8733
8734 ioa_cfg->hdw_dma_regs = ipr_regs;
8735 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
8736 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
8737
8738 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
8739
8740 pci_set_master(pdev);
8741
8742 if (ioa_cfg->sis64) {
8743 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8744 if (rc < 0) {
8745 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
8746 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8747 }
8748
8749 } else
8750 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8751
8752 if (rc < 0) {
8753 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
8754 goto cleanup_nomem;
8755 }
8756
8757 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
8758 ioa_cfg->chip_cfg->cache_line_size);
8759
8760 if (rc != PCIBIOS_SUCCESSFUL) {
8761 dev_err(&pdev->dev, "Write of cache line size failed\n");
8762 rc = -EIO;
8763 goto cleanup_nomem;
8764 }
8765
8766 /* Enable MSI style interrupts if they are supported. */
8767 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
8768 rc = ipr_test_msi(ioa_cfg, pdev);
8769 if (rc == -EOPNOTSUPP)
8770 pci_disable_msi(pdev);
8771 else if (rc)
8772 goto out_msi_disable;
8773 else
8774 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
8775 } else if (ipr_debug)
8776 dev_info(&pdev->dev, "Cannot enable MSI.\n");
8777
8778 /* Save away PCI config space for use following IOA reset */
8779 rc = pci_save_state(pdev);
8780
8781 if (rc != PCIBIOS_SUCCESSFUL) {
8782 dev_err(&pdev->dev, "Failed to save PCI config space\n");
8783 rc = -EIO;
8784 goto out_msi_disable;
8785 }
8786
8787 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
8788 goto out_msi_disable;
8789
8790 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
8791 goto out_msi_disable;
8792
8793 if (ioa_cfg->sis64)
8794 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
8795 + ((sizeof(struct ipr_config_table_entry64)
8796 * ioa_cfg->max_devs_supported)));
8797 else
8798 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
8799 + ((sizeof(struct ipr_config_table_entry)
8800 * ioa_cfg->max_devs_supported)));
8801
8802 rc = ipr_alloc_mem(ioa_cfg);
8803 if (rc < 0) {
8804 dev_err(&pdev->dev,
8805 "Couldn't allocate enough memory for device driver!\n");
8806 goto out_msi_disable;
8807 }
8808
8809 /*
8810 * If HRRQ updated interrupt is not masked, or reset alert is set,
8811 * the card is in an unknown state and needs a hard reset
8812 */
8813 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
8814 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
8815 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
8816 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
8817 ioa_cfg->needs_hard_reset = 1;
8818 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
8819 ioa_cfg->needs_hard_reset = 1;
8820 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
8821 ioa_cfg->ioa_unit_checked = 1;
8822
8823 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8824 rc = request_irq(pdev->irq, ipr_isr,
8825 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
8826 IPR_NAME, ioa_cfg);
8827
8828 if (rc) {
8829 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
8830 pdev->irq, rc);
8831 goto cleanup_nolog;
8832 }
8833
8834 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
8835 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
8836 ioa_cfg->needs_warm_reset = 1;
8837 ioa_cfg->reset = ipr_reset_slot_reset;
8838 } else
8839 ioa_cfg->reset = ipr_reset_start_bist;
8840
8841 spin_lock(&ipr_driver_lock);
8842 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
8843 spin_unlock(&ipr_driver_lock);
8844
8845 LEAVE;
8846 out:
8847 return rc;
8848
8849 cleanup_nolog:
8850 ipr_free_mem(ioa_cfg);
8851 out_msi_disable:
8852 pci_disable_msi(pdev);
8853 cleanup_nomem:
8854 iounmap(ipr_regs);
8855 out_release_regions:
8856 pci_release_regions(pdev);
8857 out_scsi_host_put:
8858 scsi_host_put(host);
8859 out_disable:
8860 pci_disable_device(pdev);
8861 goto out;
8862 }
8863
8864 /**
8865 * ipr_scan_vsets - Scans for VSET devices
8866 * @ioa_cfg: ioa config struct
8867 *
8868 * Description: Since the VSET resources do not follow SAM in that we can have
8869 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
8870 *
8871 * Return value:
8872 * none
8873 **/
8874 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
8875 {
8876 int target, lun;
8877
8878 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
8879 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
8880 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
8881 }
8882
8883 /**
8884 * ipr_initiate_ioa_bringdown - Bring down an adapter
8885 * @ioa_cfg: ioa config struct
8886 * @shutdown_type: shutdown type
8887 *
8888 * Description: This function will initiate bringing down the adapter.
8889 * This consists of issuing an IOA shutdown to the adapter
8890 * to flush the cache, and running BIST.
8891 * If the caller needs to wait on the completion of the reset,
8892 * the caller must sleep on the reset_wait_q.
8893 *
8894 * Return value:
8895 * none
8896 **/
8897 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
8898 enum ipr_shutdown_type shutdown_type)
8899 {
8900 ENTER;
8901 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8902 ioa_cfg->sdt_state = ABORT_DUMP;
8903 ioa_cfg->reset_retries = 0;
8904 ioa_cfg->in_ioa_bringdown = 1;
8905 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
8906 LEAVE;
8907 }
8908
8909 /**
8910 * __ipr_remove - Remove a single adapter
8911 * @pdev: pci device struct
8912 *
8913 * Adapter hot plug remove entry point.
8914 *
8915 * Return value:
8916 * none
8917 **/
8918 static void __ipr_remove(struct pci_dev *pdev)
8919 {
8920 unsigned long host_lock_flags = 0;
8921 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8922 ENTER;
8923
8924 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8925 while(ioa_cfg->in_reset_reload) {
8926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8927 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8928 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8929 }
8930
8931 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8932
8933 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8934 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8935 flush_work_sync(&ioa_cfg->work_q);
8936 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8937
8938 spin_lock(&ipr_driver_lock);
8939 list_del(&ioa_cfg->queue);
8940 spin_unlock(&ipr_driver_lock);
8941
8942 if (ioa_cfg->sdt_state == ABORT_DUMP)
8943 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8945
8946 ipr_free_all_resources(ioa_cfg);
8947
8948 LEAVE;
8949 }
8950
8951 /**
8952 * ipr_remove - IOA hot plug remove entry point
8953 * @pdev: pci device struct
8954 *
8955 * Adapter hot plug remove entry point.
8956 *
8957 * Return value:
8958 * none
8959 **/
8960 static void __devexit ipr_remove(struct pci_dev *pdev)
8961 {
8962 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8963
8964 ENTER;
8965
8966 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
8967 &ipr_trace_attr);
8968 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
8969 &ipr_dump_attr);
8970 scsi_remove_host(ioa_cfg->host);
8971
8972 __ipr_remove(pdev);
8973
8974 LEAVE;
8975 }
8976
8977 /**
8978 * ipr_probe - Adapter hot plug add entry point
8979 *
8980 * Return value:
8981 * 0 on success / non-zero on failure
8982 **/
8983 static int __devinit ipr_probe(struct pci_dev *pdev,
8984 const struct pci_device_id *dev_id)
8985 {
8986 struct ipr_ioa_cfg *ioa_cfg;
8987 int rc;
8988
8989 rc = ipr_probe_ioa(pdev, dev_id);
8990
8991 if (rc)
8992 return rc;
8993
8994 ioa_cfg = pci_get_drvdata(pdev);
8995 rc = ipr_probe_ioa_part2(ioa_cfg);
8996
8997 if (rc) {
8998 __ipr_remove(pdev);
8999 return rc;
9000 }
9001
9002 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
9003
9004 if (rc) {
9005 __ipr_remove(pdev);
9006 return rc;
9007 }
9008
9009 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
9010 &ipr_trace_attr);
9011
9012 if (rc) {
9013 scsi_remove_host(ioa_cfg->host);
9014 __ipr_remove(pdev);
9015 return rc;
9016 }
9017
9018 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
9019 &ipr_dump_attr);
9020
9021 if (rc) {
9022 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9023 &ipr_trace_attr);
9024 scsi_remove_host(ioa_cfg->host);
9025 __ipr_remove(pdev);
9026 return rc;
9027 }
9028
9029 scsi_scan_host(ioa_cfg->host);
9030 ipr_scan_vsets(ioa_cfg);
9031 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
9032 ioa_cfg->allow_ml_add_del = 1;
9033 ioa_cfg->host->max_channel = IPR_VSET_BUS;
9034 schedule_work(&ioa_cfg->work_q);
9035 return 0;
9036 }
9037
9038 /**
9039 * ipr_shutdown - Shutdown handler.
9040 * @pdev: pci device struct
9041 *
9042 * This function is invoked upon system shutdown/reboot. It will issue
9043 * an adapter shutdown to the adapter to flush the write cache.
9044 *
9045 * Return value:
9046 * none
9047 **/
9048 static void ipr_shutdown(struct pci_dev *pdev)
9049 {
9050 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9051 unsigned long lock_flags = 0;
9052
9053 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9054 while(ioa_cfg->in_reset_reload) {
9055 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9056 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9057 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9058 }
9059
9060 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
9061 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9062 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9063 }
9064
9065 static struct pci_device_id ipr_pci_table[] __devinitdata = {
9066 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9067 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
9068 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9069 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
9070 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9071 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
9072 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9073 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
9074 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9075 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
9076 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9077 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
9078 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9079 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
9080 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9081 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
9082 IPR_USE_LONG_TRANSOP_TIMEOUT },
9083 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9084 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9085 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9086 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9087 IPR_USE_LONG_TRANSOP_TIMEOUT },
9088 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9089 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9090 IPR_USE_LONG_TRANSOP_TIMEOUT },
9091 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9092 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9093 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9094 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9095 IPR_USE_LONG_TRANSOP_TIMEOUT},
9096 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9097 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9098 IPR_USE_LONG_TRANSOP_TIMEOUT },
9099 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9100 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
9101 IPR_USE_LONG_TRANSOP_TIMEOUT },
9102 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9103 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
9104 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9105 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
9106 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9107 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
9108 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
9109 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
9110 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
9111 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9112 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
9113 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9114 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
9115 IPR_USE_LONG_TRANSOP_TIMEOUT },
9116 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9117 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
9118 IPR_USE_LONG_TRANSOP_TIMEOUT },
9119 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9120 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
9121 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9122 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
9123 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9124 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
9125 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9126 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
9127 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9128 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
9129 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9130 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
9131 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9132 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
9133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9134 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
9135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9136 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 },
9137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
9138 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
9139 { }
9140 };
9141 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
9142
9143 static struct pci_error_handlers ipr_err_handler = {
9144 .error_detected = ipr_pci_error_detected,
9145 .slot_reset = ipr_pci_slot_reset,
9146 };
9147
9148 static struct pci_driver ipr_driver = {
9149 .name = IPR_NAME,
9150 .id_table = ipr_pci_table,
9151 .probe = ipr_probe,
9152 .remove = __devexit_p(ipr_remove),
9153 .shutdown = ipr_shutdown,
9154 .err_handler = &ipr_err_handler,
9155 };
9156
9157 /**
9158 * ipr_halt_done - Shutdown prepare completion
9159 *
9160 * Return value:
9161 * none
9162 **/
9163 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9164 {
9165 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9166
9167 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
9168 }
9169
9170 /**
9171 * ipr_halt - Issue shutdown prepare to all adapters
9172 *
9173 * Return value:
9174 * NOTIFY_OK on success / NOTIFY_DONE on failure
9175 **/
9176 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9177 {
9178 struct ipr_cmnd *ipr_cmd;
9179 struct ipr_ioa_cfg *ioa_cfg;
9180 unsigned long flags = 0;
9181
9182 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
9183 return NOTIFY_DONE;
9184
9185 spin_lock(&ipr_driver_lock);
9186
9187 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
9188 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9189 if (!ioa_cfg->allow_cmds) {
9190 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9191 continue;
9192 }
9193
9194 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9195 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9196 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9197 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9198 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
9199
9200 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
9201 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9202 }
9203 spin_unlock(&ipr_driver_lock);
9204
9205 return NOTIFY_OK;
9206 }
9207
9208 static struct notifier_block ipr_notifier = {
9209 ipr_halt, NULL, 0
9210 };
9211
9212 /**
9213 * ipr_init - Module entry point
9214 *
9215 * Return value:
9216 * 0 on success / negative value on failure
9217 **/
9218 static int __init ipr_init(void)
9219 {
9220 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
9221 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
9222
9223 register_reboot_notifier(&ipr_notifier);
9224 return pci_register_driver(&ipr_driver);
9225 }
9226
9227 /**
9228 * ipr_exit - Module unload
9229 *
9230 * Module unload entry point.
9231 *
9232 * Return value:
9233 * none
9234 **/
9235 static void __exit ipr_exit(void)
9236 {
9237 unregister_reboot_notifier(&ipr_notifier);
9238 pci_unregister_driver(&ipr_driver);
9239 }
9240
9241 module_init(ipr_init);
9242 module_exit(ipr_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree