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uio: Statically allocate uio_class and use class .dev_attrs.
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / ipr.c
blob52568588039f731cf209dbd429d4790fbf44c629
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/ioport.h>
64 #include <linux/delay.h>
65 #include <linux/pci.h>
66 #include <linux/wait.h>
67 #include <linux/spinlock.h>
68 #include <linux/sched.h>
69 #include <linux/interrupt.h>
70 #include <linux/blkdev.h>
71 #include <linux/firmware.h>
72 #include <linux/module.h>
73 #include <linux/moduleparam.h>
74 #include <linux/libata.h>
75 #include <linux/hdreg.h>
76 #include <linux/reboot.h>
77 #include <linux/stringify.h>
78 #include <asm/io.h>
79 #include <asm/irq.h>
80 #include <asm/processor.h>
81 #include <scsi/scsi.h>
82 #include <scsi/scsi_host.h>
83 #include <scsi/scsi_tcq.h>
84 #include <scsi/scsi_eh.h>
85 #include <scsi/scsi_cmnd.h>
86 #include "ipr.h"
87
88 /*
89 * Global Data
90 */
91 static LIST_HEAD(ipr_ioa_head);
92 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
93 static unsigned int ipr_max_speed = 1;
94 static int ipr_testmode = 0;
95 static unsigned int ipr_fastfail = 0;
96 static unsigned int ipr_transop_timeout = 0;
97 static unsigned int ipr_debug = 0;
98 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
99 static unsigned int ipr_dual_ioa_raid = 1;
100 static DEFINE_SPINLOCK(ipr_driver_lock);
101
102 /* This table describes the differences between DMA controller chips */
103 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
104 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
105 .mailbox = 0x0042C,
106 .cache_line_size = 0x20,
107 {
108 .set_interrupt_mask_reg = 0x0022C,
109 .clr_interrupt_mask_reg = 0x00230,
110 .clr_interrupt_mask_reg32 = 0x00230,
111 .sense_interrupt_mask_reg = 0x0022C,
112 .sense_interrupt_mask_reg32 = 0x0022C,
113 .clr_interrupt_reg = 0x00228,
114 .clr_interrupt_reg32 = 0x00228,
115 .sense_interrupt_reg = 0x00224,
116 .sense_interrupt_reg32 = 0x00224,
117 .ioarrin_reg = 0x00404,
118 .sense_uproc_interrupt_reg = 0x00214,
119 .sense_uproc_interrupt_reg32 = 0x00214,
120 .set_uproc_interrupt_reg = 0x00214,
121 .set_uproc_interrupt_reg32 = 0x00214,
122 .clr_uproc_interrupt_reg = 0x00218,
123 .clr_uproc_interrupt_reg32 = 0x00218
124 }
125 },
126 { /* Snipe and Scamp */
127 .mailbox = 0x0052C,
128 .cache_line_size = 0x20,
129 {
130 .set_interrupt_mask_reg = 0x00288,
131 .clr_interrupt_mask_reg = 0x0028C,
132 .clr_interrupt_mask_reg32 = 0x0028C,
133 .sense_interrupt_mask_reg = 0x00288,
134 .sense_interrupt_mask_reg32 = 0x00288,
135 .clr_interrupt_reg = 0x00284,
136 .clr_interrupt_reg32 = 0x00284,
137 .sense_interrupt_reg = 0x00280,
138 .sense_interrupt_reg32 = 0x00280,
139 .ioarrin_reg = 0x00504,
140 .sense_uproc_interrupt_reg = 0x00290,
141 .sense_uproc_interrupt_reg32 = 0x00290,
142 .set_uproc_interrupt_reg = 0x00290,
143 .set_uproc_interrupt_reg32 = 0x00290,
144 .clr_uproc_interrupt_reg = 0x00294,
145 .clr_uproc_interrupt_reg32 = 0x00294
146 }
147 },
148 { /* CRoC */
149 .mailbox = 0x00040,
150 .cache_line_size = 0x20,
151 {
152 .set_interrupt_mask_reg = 0x00010,
153 .clr_interrupt_mask_reg = 0x00018,
154 .clr_interrupt_mask_reg32 = 0x0001C,
155 .sense_interrupt_mask_reg = 0x00010,
156 .sense_interrupt_mask_reg32 = 0x00014,
157 .clr_interrupt_reg = 0x00008,
158 .clr_interrupt_reg32 = 0x0000C,
159 .sense_interrupt_reg = 0x00000,
160 .sense_interrupt_reg32 = 0x00004,
161 .ioarrin_reg = 0x00070,
162 .sense_uproc_interrupt_reg = 0x00020,
163 .sense_uproc_interrupt_reg32 = 0x00024,
164 .set_uproc_interrupt_reg = 0x00020,
165 .set_uproc_interrupt_reg32 = 0x00024,
166 .clr_uproc_interrupt_reg = 0x00028,
167 .clr_uproc_interrupt_reg32 = 0x0002C,
168 .init_feedback_reg = 0x0005C,
169 .dump_addr_reg = 0x00064,
170 .dump_data_reg = 0x00068,
171 .endian_swap_reg = 0x00084
172 }
173 },
174 };
175
176 static const struct ipr_chip_t ipr_chip[] = {
177 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
179 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
181 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
183 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
185 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
186 };
187
188 static int ipr_max_bus_speeds [] = {
189 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
190 };
191
192 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
193 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
194 module_param_named(max_speed, ipr_max_speed, uint, 0);
195 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
196 module_param_named(log_level, ipr_log_level, uint, 0);
197 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
198 module_param_named(testmode, ipr_testmode, int, 0);
199 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
200 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
201 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
202 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
203 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
204 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
205 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
206 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
207 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
208 module_param_named(max_devs, ipr_max_devs, int, 0);
209 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
210 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
211 MODULE_LICENSE("GPL");
212 MODULE_VERSION(IPR_DRIVER_VERSION);
213
214 /* A constant array of IOASCs/URCs/Error Messages */
215 static const
216 struct ipr_error_table_t ipr_error_table[] = {
217 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
218 "8155: An unknown error was received"},
219 {0x00330000, 0, 0,
220 "Soft underlength error"},
221 {0x005A0000, 0, 0,
222 "Command to be cancelled not found"},
223 {0x00808000, 0, 0,
224 "Qualified success"},
225 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
226 "FFFE: Soft device bus error recovered by the IOA"},
227 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
228 "4101: Soft device bus fabric error"},
229 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
230 "FFFC: Logical block guard error recovered by the device"},
231 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
232 "FFFC: Logical block reference tag error recovered by the device"},
233 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
234 "4171: Recovered scatter list tag / sequence number error"},
235 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
236 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
237 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
238 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
239 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
240 "FFFD: Recovered logical block reference tag error detected by the IOA"},
241 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
242 "FFFD: Logical block guard error recovered by the IOA"},
243 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
244 "FFF9: Device sector reassign successful"},
245 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
246 "FFF7: Media error recovered by device rewrite procedures"},
247 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
248 "7001: IOA sector reassignment successful"},
249 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
250 "FFF9: Soft media error. Sector reassignment recommended"},
251 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
252 "FFF7: Media error recovered by IOA rewrite procedures"},
253 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
254 "FF3D: Soft PCI bus error recovered by the IOA"},
255 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
256 "FFF6: Device hardware error recovered by the IOA"},
257 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
258 "FFF6: Device hardware error recovered by the device"},
259 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
260 "FF3D: Soft IOA error recovered by the IOA"},
261 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
262 "FFFA: Undefined device response recovered by the IOA"},
263 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
264 "FFF6: Device bus error, message or command phase"},
265 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
266 "FFFE: Task Management Function failed"},
267 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
268 "FFF6: Failure prediction threshold exceeded"},
269 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
270 "8009: Impending cache battery pack failure"},
271 {0x02040400, 0, 0,
272 "34FF: Disk device format in progress"},
273 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
274 "9070: IOA requested reset"},
275 {0x023F0000, 0, 0,
276 "Synchronization required"},
277 {0x024E0000, 0, 0,
278 "No ready, IOA shutdown"},
279 {0x025A0000, 0, 0,
280 "Not ready, IOA has been shutdown"},
281 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
282 "3020: Storage subsystem configuration error"},
283 {0x03110B00, 0, 0,
284 "FFF5: Medium error, data unreadable, recommend reassign"},
285 {0x03110C00, 0, 0,
286 "7000: Medium error, data unreadable, do not reassign"},
287 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
288 "FFF3: Disk media format bad"},
289 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
290 "3002: Addressed device failed to respond to selection"},
291 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
292 "3100: Device bus error"},
293 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
294 "3109: IOA timed out a device command"},
295 {0x04088000, 0, 0,
296 "3120: SCSI bus is not operational"},
297 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
298 "4100: Hard device bus fabric error"},
299 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
300 "310C: Logical block guard error detected by the device"},
301 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
302 "310C: Logical block reference tag error detected by the device"},
303 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
304 "4170: Scatter list tag / sequence number error"},
305 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
306 "8150: Logical block CRC error on IOA to Host transfer"},
307 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
308 "4170: Logical block sequence number error on IOA to Host transfer"},
309 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
310 "310D: Logical block reference tag error detected by the IOA"},
311 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
312 "310D: Logical block guard error detected by the IOA"},
313 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
314 "9000: IOA reserved area data check"},
315 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
316 "9001: IOA reserved area invalid data pattern"},
317 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
318 "9002: IOA reserved area LRC error"},
319 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
320 "Hardware Error, IOA metadata access error"},
321 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
322 "102E: Out of alternate sectors for disk storage"},
323 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
324 "FFF4: Data transfer underlength error"},
325 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
326 "FFF4: Data transfer overlength error"},
327 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
328 "3400: Logical unit failure"},
329 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
330 "FFF4: Device microcode is corrupt"},
331 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
332 "8150: PCI bus error"},
333 {0x04430000, 1, 0,
334 "Unsupported device bus message received"},
335 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
336 "FFF4: Disk device problem"},
337 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
338 "8150: Permanent IOA failure"},
339 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
340 "3010: Disk device returned wrong response to IOA"},
341 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
342 "8151: IOA microcode error"},
343 {0x04448500, 0, 0,
344 "Device bus status error"},
345 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
346 "8157: IOA error requiring IOA reset to recover"},
347 {0x04448700, 0, 0,
348 "ATA device status error"},
349 {0x04490000, 0, 0,
350 "Message reject received from the device"},
351 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
352 "8008: A permanent cache battery pack failure occurred"},
353 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
354 "9090: Disk unit has been modified after the last known status"},
355 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
356 "9081: IOA detected device error"},
357 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
358 "9082: IOA detected device error"},
359 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
360 "3110: Device bus error, message or command phase"},
361 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
362 "3110: SAS Command / Task Management Function failed"},
363 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
364 "9091: Incorrect hardware configuration change has been detected"},
365 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
366 "9073: Invalid multi-adapter configuration"},
367 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
368 "4010: Incorrect connection between cascaded expanders"},
369 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
370 "4020: Connections exceed IOA design limits"},
371 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
372 "4030: Incorrect multipath connection"},
373 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
374 "4110: Unsupported enclosure function"},
375 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
376 "FFF4: Command to logical unit failed"},
377 {0x05240000, 1, 0,
378 "Illegal request, invalid request type or request packet"},
379 {0x05250000, 0, 0,
380 "Illegal request, invalid resource handle"},
381 {0x05258000, 0, 0,
382 "Illegal request, commands not allowed to this device"},
383 {0x05258100, 0, 0,
384 "Illegal request, command not allowed to a secondary adapter"},
385 {0x05258200, 0, 0,
386 "Illegal request, command not allowed to a non-optimized resource"},
387 {0x05260000, 0, 0,
388 "Illegal request, invalid field in parameter list"},
389 {0x05260100, 0, 0,
390 "Illegal request, parameter not supported"},
391 {0x05260200, 0, 0,
392 "Illegal request, parameter value invalid"},
393 {0x052C0000, 0, 0,
394 "Illegal request, command sequence error"},
395 {0x052C8000, 1, 0,
396 "Illegal request, dual adapter support not enabled"},
397 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
398 "9031: Array protection temporarily suspended, protection resuming"},
399 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
400 "9040: Array protection temporarily suspended, protection resuming"},
401 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
402 "3140: Device bus not ready to ready transition"},
403 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
404 "FFFB: SCSI bus was reset"},
405 {0x06290500, 0, 0,
406 "FFFE: SCSI bus transition to single ended"},
407 {0x06290600, 0, 0,
408 "FFFE: SCSI bus transition to LVD"},
409 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
410 "FFFB: SCSI bus was reset by another initiator"},
411 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
412 "3029: A device replacement has occurred"},
413 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
414 "9051: IOA cache data exists for a missing or failed device"},
415 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
416 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
417 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
418 "9025: Disk unit is not supported at its physical location"},
419 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
420 "3020: IOA detected a SCSI bus configuration error"},
421 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
422 "3150: SCSI bus configuration error"},
423 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
424 "9074: Asymmetric advanced function disk configuration"},
425 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
426 "4040: Incomplete multipath connection between IOA and enclosure"},
427 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
428 "4041: Incomplete multipath connection between enclosure and device"},
429 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
430 "9075: Incomplete multipath connection between IOA and remote IOA"},
431 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
432 "9076: Configuration error, missing remote IOA"},
433 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
434 "4050: Enclosure does not support a required multipath function"},
435 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
436 "4070: Logically bad block written on device"},
437 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
438 "9041: Array protection temporarily suspended"},
439 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
440 "9042: Corrupt array parity detected on specified device"},
441 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
442 "9030: Array no longer protected due to missing or failed disk unit"},
443 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
444 "9071: Link operational transition"},
445 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
446 "9072: Link not operational transition"},
447 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
448 "9032: Array exposed but still protected"},
449 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
450 "70DD: Device forced failed by disrupt device command"},
451 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
452 "4061: Multipath redundancy level got better"},
453 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
454 "4060: Multipath redundancy level got worse"},
455 {0x07270000, 0, 0,
456 "Failure due to other device"},
457 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
458 "9008: IOA does not support functions expected by devices"},
459 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
460 "9010: Cache data associated with attached devices cannot be found"},
461 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
462 "9011: Cache data belongs to devices other than those attached"},
463 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
464 "9020: Array missing 2 or more devices with only 1 device present"},
465 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
466 "9021: Array missing 2 or more devices with 2 or more devices present"},
467 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
468 "9022: Exposed array is missing a required device"},
469 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
470 "9023: Array member(s) not at required physical locations"},
471 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
472 "9024: Array not functional due to present hardware configuration"},
473 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
474 "9026: Array not functional due to present hardware configuration"},
475 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
476 "9027: Array is missing a device and parity is out of sync"},
477 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
478 "9028: Maximum number of arrays already exist"},
479 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
480 "9050: Required cache data cannot be located for a disk unit"},
481 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
482 "9052: Cache data exists for a device that has been modified"},
483 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
484 "9054: IOA resources not available due to previous problems"},
485 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
486 "9092: Disk unit requires initialization before use"},
487 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
488 "9029: Incorrect hardware configuration change has been detected"},
489 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
490 "9060: One or more disk pairs are missing from an array"},
491 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
492 "9061: One or more disks are missing from an array"},
493 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
494 "9062: One or more disks are missing from an array"},
495 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
496 "9063: Maximum number of functional arrays has been exceeded"},
497 {0x0B260000, 0, 0,
498 "Aborted command, invalid descriptor"},
499 {0x0B5A0000, 0, 0,
500 "Command terminated by host"}
501 };
502
503 static const struct ipr_ses_table_entry ipr_ses_table[] = {
504 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
505 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
506 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
507 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
508 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
509 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
510 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
511 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
512 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
513 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
514 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
515 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
516 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
517 };
518
519 /*
520 * Function Prototypes
521 */
522 static int ipr_reset_alert(struct ipr_cmnd *);
523 static void ipr_process_ccn(struct ipr_cmnd *);
524 static void ipr_process_error(struct ipr_cmnd *);
525 static void ipr_reset_ioa_job(struct ipr_cmnd *);
526 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
527 enum ipr_shutdown_type);
528
529 #ifdef CONFIG_SCSI_IPR_TRACE
530 /**
531 * ipr_trc_hook - Add a trace entry to the driver trace
532 * @ipr_cmd: ipr command struct
533 * @type: trace type
534 * @add_data: additional data
535 *
536 * Return value:
537 * none
538 **/
539 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
540 u8 type, u32 add_data)
541 {
542 struct ipr_trace_entry *trace_entry;
543 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
544
545 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
546 trace_entry->time = jiffies;
547 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
548 trace_entry->type = type;
549 if (ipr_cmd->ioa_cfg->sis64)
550 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
551 else
552 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
553 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
554 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
555 trace_entry->u.add_data = add_data;
556 }
557 #else
558 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
559 #endif
560
561 /**
562 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
563 * @ipr_cmd: ipr command struct
564 *
565 * Return value:
566 * none
567 **/
568 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
569 {
570 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
571 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
572 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
573 dma_addr_t dma_addr = ipr_cmd->dma_addr;
574
575 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
576 ioarcb->data_transfer_length = 0;
577 ioarcb->read_data_transfer_length = 0;
578 ioarcb->ioadl_len = 0;
579 ioarcb->read_ioadl_len = 0;
580
581 if (ipr_cmd->ioa_cfg->sis64) {
582 ioarcb->u.sis64_addr_data.data_ioadl_addr =
583 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
584 ioasa64->u.gata.status = 0;
585 } else {
586 ioarcb->write_ioadl_addr =
587 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
588 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
589 ioasa->u.gata.status = 0;
590 }
591
592 ioasa->hdr.ioasc = 0;
593 ioasa->hdr.residual_data_len = 0;
594 ipr_cmd->scsi_cmd = NULL;
595 ipr_cmd->qc = NULL;
596 ipr_cmd->sense_buffer[0] = 0;
597 ipr_cmd->dma_use_sg = 0;
598 }
599
600 /**
601 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
602 * @ipr_cmd: ipr command struct
603 *
604 * Return value:
605 * none
606 **/
607 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
608 {
609 ipr_reinit_ipr_cmnd(ipr_cmd);
610 ipr_cmd->u.scratch = 0;
611 ipr_cmd->sibling = NULL;
612 init_timer(&ipr_cmd->timer);
613 }
614
615 /**
616 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
617 * @ioa_cfg: ioa config struct
618 *
619 * Return value:
620 * pointer to ipr command struct
621 **/
622 static
623 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
624 {
625 struct ipr_cmnd *ipr_cmd;
626
627 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
628 list_del(&ipr_cmd->queue);
629 ipr_init_ipr_cmnd(ipr_cmd);
630
631 return ipr_cmd;
632 }
633
634 /**
635 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
636 * @ioa_cfg: ioa config struct
637 * @clr_ints: interrupts to clear
638 *
639 * This function masks all interrupts on the adapter, then clears the
640 * interrupts specified in the mask
641 *
642 * Return value:
643 * none
644 **/
645 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
646 u32 clr_ints)
647 {
648 volatile u32 int_reg;
649
650 /* Stop new interrupts */
651 ioa_cfg->allow_interrupts = 0;
652
653 /* Set interrupt mask to stop all new interrupts */
654 if (ioa_cfg->sis64)
655 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
656 else
657 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
658
659 /* Clear any pending interrupts */
660 if (ioa_cfg->sis64)
661 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
662 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
663 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
664 }
665
666 /**
667 * ipr_save_pcix_cmd_reg - Save PCI-X command register
668 * @ioa_cfg: ioa config struct
669 *
670 * Return value:
671 * 0 on success / -EIO on failure
672 **/
673 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
674 {
675 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
676
677 if (pcix_cmd_reg == 0)
678 return 0;
679
680 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
681 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
682 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
683 return -EIO;
684 }
685
686 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
687 return 0;
688 }
689
690 /**
691 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
692 * @ioa_cfg: ioa config struct
693 *
694 * Return value:
695 * 0 on success / -EIO on failure
696 **/
697 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
698 {
699 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
700
701 if (pcix_cmd_reg) {
702 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
703 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
704 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
705 return -EIO;
706 }
707 }
708
709 return 0;
710 }
711
712 /**
713 * ipr_sata_eh_done - done function for aborted SATA commands
714 * @ipr_cmd: ipr command struct
715 *
716 * This function is invoked for ops generated to SATA
717 * devices which are being aborted.
718 *
719 * Return value:
720 * none
721 **/
722 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
723 {
724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
725 struct ata_queued_cmd *qc = ipr_cmd->qc;
726 struct ipr_sata_port *sata_port = qc->ap->private_data;
727
728 qc->err_mask |= AC_ERR_OTHER;
729 sata_port->ioasa.status |= ATA_BUSY;
730 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
731 ata_qc_complete(qc);
732 }
733
734 /**
735 * ipr_scsi_eh_done - mid-layer done function for aborted ops
736 * @ipr_cmd: ipr command struct
737 *
738 * This function is invoked by the interrupt handler for
739 * ops generated by the SCSI mid-layer which are being aborted.
740 *
741 * Return value:
742 * none
743 **/
744 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
745 {
746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
748
749 scsi_cmd->result |= (DID_ERROR << 16);
750
751 scsi_dma_unmap(ipr_cmd->scsi_cmd);
752 scsi_cmd->scsi_done(scsi_cmd);
753 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
754 }
755
756 /**
757 * ipr_fail_all_ops - Fails all outstanding ops.
758 * @ioa_cfg: ioa config struct
759 *
760 * This function fails all outstanding ops.
761 *
762 * Return value:
763 * none
764 **/
765 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
766 {
767 struct ipr_cmnd *ipr_cmd, *temp;
768
769 ENTER;
770 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
771 list_del(&ipr_cmd->queue);
772
773 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
774 ipr_cmd->s.ioasa.hdr.ilid = cpu_to_be32(IPR_DRIVER_ILID);
775
776 if (ipr_cmd->scsi_cmd)
777 ipr_cmd->done = ipr_scsi_eh_done;
778 else if (ipr_cmd->qc)
779 ipr_cmd->done = ipr_sata_eh_done;
780
781 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
782 del_timer(&ipr_cmd->timer);
783 ipr_cmd->done(ipr_cmd);
784 }
785
786 LEAVE;
787 }
788
789 /**
790 * ipr_send_command - Send driver initiated requests.
791 * @ipr_cmd: ipr command struct
792 *
793 * This function sends a command to the adapter using the correct write call.
794 * In the case of sis64, calculate the ioarcb size required. Then or in the
795 * appropriate bits.
796 *
797 * Return value:
798 * none
799 **/
800 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
801 {
802 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
803 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
804
805 if (ioa_cfg->sis64) {
806 /* The default size is 256 bytes */
807 send_dma_addr |= 0x1;
808
809 /* If the number of ioadls * size of ioadl > 128 bytes,
810 then use a 512 byte ioarcb */
811 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
812 send_dma_addr |= 0x4;
813 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
814 } else
815 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
816 }
817
818 /**
819 * ipr_do_req - Send driver initiated requests.
820 * @ipr_cmd: ipr command struct
821 * @done: done function
822 * @timeout_func: timeout function
823 * @timeout: timeout value
824 *
825 * This function sends the specified command to the adapter with the
826 * timeout given. The done function is invoked on command completion.
827 *
828 * Return value:
829 * none
830 **/
831 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
832 void (*done) (struct ipr_cmnd *),
833 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
834 {
835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
836
837 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
838
839 ipr_cmd->done = done;
840
841 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
842 ipr_cmd->timer.expires = jiffies + timeout;
843 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
844
845 add_timer(&ipr_cmd->timer);
846
847 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
848
849 mb();
850
851 ipr_send_command(ipr_cmd);
852 }
853
854 /**
855 * ipr_internal_cmd_done - Op done function for an internally generated op.
856 * @ipr_cmd: ipr command struct
857 *
858 * This function is the op done function for an internally generated,
859 * blocking op. It simply wakes the sleeping thread.
860 *
861 * Return value:
862 * none
863 **/
864 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
865 {
866 if (ipr_cmd->sibling)
867 ipr_cmd->sibling = NULL;
868 else
869 complete(&ipr_cmd->completion);
870 }
871
872 /**
873 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
874 * @ipr_cmd: ipr command struct
875 * @dma_addr: dma address
876 * @len: transfer length
877 * @flags: ioadl flag value
878 *
879 * This function initializes an ioadl in the case where there is only a single
880 * descriptor.
881 *
882 * Return value:
883 * nothing
884 **/
885 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
886 u32 len, int flags)
887 {
888 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
889 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
890
891 ipr_cmd->dma_use_sg = 1;
892
893 if (ipr_cmd->ioa_cfg->sis64) {
894 ioadl64->flags = cpu_to_be32(flags);
895 ioadl64->data_len = cpu_to_be32(len);
896 ioadl64->address = cpu_to_be64(dma_addr);
897
898 ipr_cmd->ioarcb.ioadl_len =
899 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
900 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
901 } else {
902 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
903 ioadl->address = cpu_to_be32(dma_addr);
904
905 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
906 ipr_cmd->ioarcb.read_ioadl_len =
907 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
908 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
909 } else {
910 ipr_cmd->ioarcb.ioadl_len =
911 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
912 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
913 }
914 }
915 }
916
917 /**
918 * ipr_send_blocking_cmd - Send command and sleep on its completion.
919 * @ipr_cmd: ipr command struct
920 * @timeout_func: function to invoke if command times out
921 * @timeout: timeout
922 *
923 * Return value:
924 * none
925 **/
926 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
927 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
928 u32 timeout)
929 {
930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
931
932 init_completion(&ipr_cmd->completion);
933 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
934
935 spin_unlock_irq(ioa_cfg->host->host_lock);
936 wait_for_completion(&ipr_cmd->completion);
937 spin_lock_irq(ioa_cfg->host->host_lock);
938 }
939
940 /**
941 * ipr_send_hcam - Send an HCAM to the adapter.
942 * @ioa_cfg: ioa config struct
943 * @type: HCAM type
944 * @hostrcb: hostrcb struct
945 *
946 * This function will send a Host Controlled Async command to the adapter.
947 * If HCAMs are currently not allowed to be issued to the adapter, it will
948 * place the hostrcb on the free queue.
949 *
950 * Return value:
951 * none
952 **/
953 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
954 struct ipr_hostrcb *hostrcb)
955 {
956 struct ipr_cmnd *ipr_cmd;
957 struct ipr_ioarcb *ioarcb;
958
959 if (ioa_cfg->allow_cmds) {
960 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
961 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
962 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
963
964 ipr_cmd->u.hostrcb = hostrcb;
965 ioarcb = &ipr_cmd->ioarcb;
966
967 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
968 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
969 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
970 ioarcb->cmd_pkt.cdb[1] = type;
971 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
972 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
973
974 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
975 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
976
977 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
978 ipr_cmd->done = ipr_process_ccn;
979 else
980 ipr_cmd->done = ipr_process_error;
981
982 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
983
984 mb();
985
986 ipr_send_command(ipr_cmd);
987 } else {
988 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
989 }
990 }
991
992 /**
993 * ipr_update_ata_class - Update the ata class in the resource entry
994 * @res: resource entry struct
995 * @proto: cfgte device bus protocol value
996 *
997 * Return value:
998 * none
999 **/
1000 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1001 {
1002 switch(proto) {
1003 case IPR_PROTO_SATA:
1004 case IPR_PROTO_SAS_STP:
1005 res->ata_class = ATA_DEV_ATA;
1006 break;
1007 case IPR_PROTO_SATA_ATAPI:
1008 case IPR_PROTO_SAS_STP_ATAPI:
1009 res->ata_class = ATA_DEV_ATAPI;
1010 break;
1011 default:
1012 res->ata_class = ATA_DEV_UNKNOWN;
1013 break;
1014 };
1015 }
1016
1017 /**
1018 * ipr_init_res_entry - Initialize a resource entry struct.
1019 * @res: resource entry struct
1020 * @cfgtew: config table entry wrapper struct
1021 *
1022 * Return value:
1023 * none
1024 **/
1025 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1026 struct ipr_config_table_entry_wrapper *cfgtew)
1027 {
1028 int found = 0;
1029 unsigned int proto;
1030 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1031 struct ipr_resource_entry *gscsi_res = NULL;
1032
1033 res->needs_sync_complete = 0;
1034 res->in_erp = 0;
1035 res->add_to_ml = 0;
1036 res->del_from_ml = 0;
1037 res->resetting_device = 0;
1038 res->sdev = NULL;
1039 res->sata_port = NULL;
1040
1041 if (ioa_cfg->sis64) {
1042 proto = cfgtew->u.cfgte64->proto;
1043 res->res_flags = cfgtew->u.cfgte64->res_flags;
1044 res->qmodel = IPR_QUEUEING_MODEL64(res);
1045 res->type = cfgtew->u.cfgte64->res_type;
1046
1047 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1048 sizeof(res->res_path));
1049
1050 res->bus = 0;
1051 res->lun = scsilun_to_int(&res->dev_lun);
1052
1053 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1054 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1055 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1056 found = 1;
1057 res->target = gscsi_res->target;
1058 break;
1059 }
1060 }
1061 if (!found) {
1062 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1063 ioa_cfg->max_devs_supported);
1064 set_bit(res->target, ioa_cfg->target_ids);
1065 }
1066
1067 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1068 sizeof(res->dev_lun.scsi_lun));
1069 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1070 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1071 res->target = 0;
1072 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1073 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1074 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1075 ioa_cfg->max_devs_supported);
1076 set_bit(res->target, ioa_cfg->array_ids);
1077 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1078 res->bus = IPR_VSET_VIRTUAL_BUS;
1079 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1080 ioa_cfg->max_devs_supported);
1081 set_bit(res->target, ioa_cfg->vset_ids);
1082 } else {
1083 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1084 ioa_cfg->max_devs_supported);
1085 set_bit(res->target, ioa_cfg->target_ids);
1086 }
1087 } else {
1088 proto = cfgtew->u.cfgte->proto;
1089 res->qmodel = IPR_QUEUEING_MODEL(res);
1090 res->flags = cfgtew->u.cfgte->flags;
1091 if (res->flags & IPR_IS_IOA_RESOURCE)
1092 res->type = IPR_RES_TYPE_IOAFP;
1093 else
1094 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1095
1096 res->bus = cfgtew->u.cfgte->res_addr.bus;
1097 res->target = cfgtew->u.cfgte->res_addr.target;
1098 res->lun = cfgtew->u.cfgte->res_addr.lun;
1099 }
1100
1101 ipr_update_ata_class(res, proto);
1102 }
1103
1104 /**
1105 * ipr_is_same_device - Determine if two devices are the same.
1106 * @res: resource entry struct
1107 * @cfgtew: config table entry wrapper struct
1108 *
1109 * Return value:
1110 * 1 if the devices are the same / 0 otherwise
1111 **/
1112 static int ipr_is_same_device(struct ipr_resource_entry *res,
1113 struct ipr_config_table_entry_wrapper *cfgtew)
1114 {
1115 if (res->ioa_cfg->sis64) {
1116 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1117 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1118 !memcmp(&res->lun, &cfgtew->u.cfgte64->lun,
1119 sizeof(cfgtew->u.cfgte64->lun))) {
1120 return 1;
1121 }
1122 } else {
1123 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1124 res->target == cfgtew->u.cfgte->res_addr.target &&
1125 res->lun == cfgtew->u.cfgte->res_addr.lun)
1126 return 1;
1127 }
1128
1129 return 0;
1130 }
1131
1132 /**
1133 * ipr_format_res_path - Format the resource path for printing.
1134 * @res_path: resource path
1135 * @buf: buffer
1136 *
1137 * Return value:
1138 * pointer to buffer
1139 **/
1140 static char *ipr_format_res_path(u8 *res_path, char *buffer, int len)
1141 {
1142 int i;
1143 char *p = buffer;
1144
1145 res_path[0] = '\0';
1146 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1147 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1148 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1149
1150 return buffer;
1151 }
1152
1153 /**
1154 * ipr_update_res_entry - Update the resource entry.
1155 * @res: resource entry struct
1156 * @cfgtew: config table entry wrapper struct
1157 *
1158 * Return value:
1159 * none
1160 **/
1161 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1162 struct ipr_config_table_entry_wrapper *cfgtew)
1163 {
1164 char buffer[IPR_MAX_RES_PATH_LENGTH];
1165 unsigned int proto;
1166 int new_path = 0;
1167
1168 if (res->ioa_cfg->sis64) {
1169 res->flags = cfgtew->u.cfgte64->flags;
1170 res->res_flags = cfgtew->u.cfgte64->res_flags;
1171 res->type = cfgtew->u.cfgte64->res_type;
1172
1173 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1174 sizeof(struct ipr_std_inq_data));
1175
1176 res->qmodel = IPR_QUEUEING_MODEL64(res);
1177 proto = cfgtew->u.cfgte64->proto;
1178 res->res_handle = cfgtew->u.cfgte64->res_handle;
1179 res->dev_id = cfgtew->u.cfgte64->dev_id;
1180
1181 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1182 sizeof(res->dev_lun.scsi_lun));
1183
1184 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1185 sizeof(res->res_path))) {
1186 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1187 sizeof(res->res_path));
1188 new_path = 1;
1189 }
1190
1191 if (res->sdev && new_path)
1192 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1193 ipr_format_res_path(res->res_path, buffer,
1194 sizeof(buffer)));
1195 } else {
1196 res->flags = cfgtew->u.cfgte->flags;
1197 if (res->flags & IPR_IS_IOA_RESOURCE)
1198 res->type = IPR_RES_TYPE_IOAFP;
1199 else
1200 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1201
1202 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1203 sizeof(struct ipr_std_inq_data));
1204
1205 res->qmodel = IPR_QUEUEING_MODEL(res);
1206 proto = cfgtew->u.cfgte->proto;
1207 res->res_handle = cfgtew->u.cfgte->res_handle;
1208 }
1209
1210 ipr_update_ata_class(res, proto);
1211 }
1212
1213 /**
1214 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1215 * for the resource.
1216 * @res: resource entry struct
1217 * @cfgtew: config table entry wrapper struct
1218 *
1219 * Return value:
1220 * none
1221 **/
1222 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1223 {
1224 struct ipr_resource_entry *gscsi_res = NULL;
1225 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1226
1227 if (!ioa_cfg->sis64)
1228 return;
1229
1230 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1231 clear_bit(res->target, ioa_cfg->array_ids);
1232 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1233 clear_bit(res->target, ioa_cfg->vset_ids);
1234 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1235 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1236 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1237 return;
1238 clear_bit(res->target, ioa_cfg->target_ids);
1239
1240 } else if (res->bus == 0)
1241 clear_bit(res->target, ioa_cfg->target_ids);
1242 }
1243
1244 /**
1245 * ipr_handle_config_change - Handle a config change from the adapter
1246 * @ioa_cfg: ioa config struct
1247 * @hostrcb: hostrcb
1248 *
1249 * Return value:
1250 * none
1251 **/
1252 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1253 struct ipr_hostrcb *hostrcb)
1254 {
1255 struct ipr_resource_entry *res = NULL;
1256 struct ipr_config_table_entry_wrapper cfgtew;
1257 __be32 cc_res_handle;
1258
1259 u32 is_ndn = 1;
1260
1261 if (ioa_cfg->sis64) {
1262 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1263 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1264 } else {
1265 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1266 cc_res_handle = cfgtew.u.cfgte->res_handle;
1267 }
1268
1269 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1270 if (res->res_handle == cc_res_handle) {
1271 is_ndn = 0;
1272 break;
1273 }
1274 }
1275
1276 if (is_ndn) {
1277 if (list_empty(&ioa_cfg->free_res_q)) {
1278 ipr_send_hcam(ioa_cfg,
1279 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1280 hostrcb);
1281 return;
1282 }
1283
1284 res = list_entry(ioa_cfg->free_res_q.next,
1285 struct ipr_resource_entry, queue);
1286
1287 list_del(&res->queue);
1288 ipr_init_res_entry(res, &cfgtew);
1289 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1290 }
1291
1292 ipr_update_res_entry(res, &cfgtew);
1293
1294 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1295 if (res->sdev) {
1296 res->del_from_ml = 1;
1297 res->res_handle = IPR_INVALID_RES_HANDLE;
1298 if (ioa_cfg->allow_ml_add_del)
1299 schedule_work(&ioa_cfg->work_q);
1300 } else {
1301 ipr_clear_res_target(res);
1302 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1303 }
1304 } else if (!res->sdev) {
1305 res->add_to_ml = 1;
1306 if (ioa_cfg->allow_ml_add_del)
1307 schedule_work(&ioa_cfg->work_q);
1308 }
1309
1310 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1311 }
1312
1313 /**
1314 * ipr_process_ccn - Op done function for a CCN.
1315 * @ipr_cmd: ipr command struct
1316 *
1317 * This function is the op done function for a configuration
1318 * change notification host controlled async from the adapter.
1319 *
1320 * Return value:
1321 * none
1322 **/
1323 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1324 {
1325 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1326 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1327 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1328
1329 list_del(&hostrcb->queue);
1330 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1331
1332 if (ioasc) {
1333 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1334 dev_err(&ioa_cfg->pdev->dev,
1335 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1336
1337 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1338 } else {
1339 ipr_handle_config_change(ioa_cfg, hostrcb);
1340 }
1341 }
1342
1343 /**
1344 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1345 * @i: index into buffer
1346 * @buf: string to modify
1347 *
1348 * This function will strip all trailing whitespace, pad the end
1349 * of the string with a single space, and NULL terminate the string.
1350 *
1351 * Return value:
1352 * new length of string
1353 **/
1354 static int strip_and_pad_whitespace(int i, char *buf)
1355 {
1356 while (i && buf[i] == ' ')
1357 i--;
1358 buf[i+1] = ' ';
1359 buf[i+2] = '\0';
1360 return i + 2;
1361 }
1362
1363 /**
1364 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1365 * @prefix: string to print at start of printk
1366 * @hostrcb: hostrcb pointer
1367 * @vpd: vendor/product id/sn struct
1368 *
1369 * Return value:
1370 * none
1371 **/
1372 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1373 struct ipr_vpd *vpd)
1374 {
1375 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1376 int i = 0;
1377
1378 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1379 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1380
1381 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1382 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1383
1384 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1385 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1386
1387 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1388 }
1389
1390 /**
1391 * ipr_log_vpd - Log the passed VPD to the error log.
1392 * @vpd: vendor/product id/sn struct
1393 *
1394 * Return value:
1395 * none
1396 **/
1397 static void ipr_log_vpd(struct ipr_vpd *vpd)
1398 {
1399 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1400 + IPR_SERIAL_NUM_LEN];
1401
1402 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1403 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1404 IPR_PROD_ID_LEN);
1405 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1406 ipr_err("Vendor/Product ID: %s\n", buffer);
1407
1408 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1409 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1410 ipr_err(" Serial Number: %s\n", buffer);
1411 }
1412
1413 /**
1414 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1415 * @prefix: string to print at start of printk
1416 * @hostrcb: hostrcb pointer
1417 * @vpd: vendor/product id/sn/wwn struct
1418 *
1419 * Return value:
1420 * none
1421 **/
1422 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1423 struct ipr_ext_vpd *vpd)
1424 {
1425 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1426 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1427 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1428 }
1429
1430 /**
1431 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1432 * @vpd: vendor/product id/sn/wwn struct
1433 *
1434 * Return value:
1435 * none
1436 **/
1437 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1438 {
1439 ipr_log_vpd(&vpd->vpd);
1440 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1441 be32_to_cpu(vpd->wwid[1]));
1442 }
1443
1444 /**
1445 * ipr_log_enhanced_cache_error - Log a cache error.
1446 * @ioa_cfg: ioa config struct
1447 * @hostrcb: hostrcb struct
1448 *
1449 * Return value:
1450 * none
1451 **/
1452 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1453 struct ipr_hostrcb *hostrcb)
1454 {
1455 struct ipr_hostrcb_type_12_error *error;
1456
1457 if (ioa_cfg->sis64)
1458 error = &hostrcb->hcam.u.error64.u.type_12_error;
1459 else
1460 error = &hostrcb->hcam.u.error.u.type_12_error;
1461
1462 ipr_err("-----Current Configuration-----\n");
1463 ipr_err("Cache Directory Card Information:\n");
1464 ipr_log_ext_vpd(&error->ioa_vpd);
1465 ipr_err("Adapter Card Information:\n");
1466 ipr_log_ext_vpd(&error->cfc_vpd);
1467
1468 ipr_err("-----Expected Configuration-----\n");
1469 ipr_err("Cache Directory Card Information:\n");
1470 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1471 ipr_err("Adapter Card Information:\n");
1472 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1473
1474 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1475 be32_to_cpu(error->ioa_data[0]),
1476 be32_to_cpu(error->ioa_data[1]),
1477 be32_to_cpu(error->ioa_data[2]));
1478 }
1479
1480 /**
1481 * ipr_log_cache_error - Log a cache error.
1482 * @ioa_cfg: ioa config struct
1483 * @hostrcb: hostrcb struct
1484 *
1485 * Return value:
1486 * none
1487 **/
1488 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1489 struct ipr_hostrcb *hostrcb)
1490 {
1491 struct ipr_hostrcb_type_02_error *error =
1492 &hostrcb->hcam.u.error.u.type_02_error;
1493
1494 ipr_err("-----Current Configuration-----\n");
1495 ipr_err("Cache Directory Card Information:\n");
1496 ipr_log_vpd(&error->ioa_vpd);
1497 ipr_err("Adapter Card Information:\n");
1498 ipr_log_vpd(&error->cfc_vpd);
1499
1500 ipr_err("-----Expected Configuration-----\n");
1501 ipr_err("Cache Directory Card Information:\n");
1502 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1503 ipr_err("Adapter Card Information:\n");
1504 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1505
1506 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1507 be32_to_cpu(error->ioa_data[0]),
1508 be32_to_cpu(error->ioa_data[1]),
1509 be32_to_cpu(error->ioa_data[2]));
1510 }
1511
1512 /**
1513 * ipr_log_enhanced_config_error - Log a configuration error.
1514 * @ioa_cfg: ioa config struct
1515 * @hostrcb: hostrcb struct
1516 *
1517 * Return value:
1518 * none
1519 **/
1520 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1521 struct ipr_hostrcb *hostrcb)
1522 {
1523 int errors_logged, i;
1524 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1525 struct ipr_hostrcb_type_13_error *error;
1526
1527 error = &hostrcb->hcam.u.error.u.type_13_error;
1528 errors_logged = be32_to_cpu(error->errors_logged);
1529
1530 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1531 be32_to_cpu(error->errors_detected), errors_logged);
1532
1533 dev_entry = error->dev;
1534
1535 for (i = 0; i < errors_logged; i++, dev_entry++) {
1536 ipr_err_separator;
1537
1538 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1539 ipr_log_ext_vpd(&dev_entry->vpd);
1540
1541 ipr_err("-----New Device Information-----\n");
1542 ipr_log_ext_vpd(&dev_entry->new_vpd);
1543
1544 ipr_err("Cache Directory Card Information:\n");
1545 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1546
1547 ipr_err("Adapter Card Information:\n");
1548 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1549 }
1550 }
1551
1552 /**
1553 * ipr_log_sis64_config_error - Log a device error.
1554 * @ioa_cfg: ioa config struct
1555 * @hostrcb: hostrcb struct
1556 *
1557 * Return value:
1558 * none
1559 **/
1560 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1561 struct ipr_hostrcb *hostrcb)
1562 {
1563 int errors_logged, i;
1564 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1565 struct ipr_hostrcb_type_23_error *error;
1566 char buffer[IPR_MAX_RES_PATH_LENGTH];
1567
1568 error = &hostrcb->hcam.u.error64.u.type_23_error;
1569 errors_logged = be32_to_cpu(error->errors_logged);
1570
1571 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1572 be32_to_cpu(error->errors_detected), errors_logged);
1573
1574 dev_entry = error->dev;
1575
1576 for (i = 0; i < errors_logged; i++, dev_entry++) {
1577 ipr_err_separator;
1578
1579 ipr_err("Device %d : %s", i + 1,
1580 ipr_format_res_path(dev_entry->res_path, buffer,
1581 sizeof(buffer)));
1582 ipr_log_ext_vpd(&dev_entry->vpd);
1583
1584 ipr_err("-----New Device Information-----\n");
1585 ipr_log_ext_vpd(&dev_entry->new_vpd);
1586
1587 ipr_err("Cache Directory Card Information:\n");
1588 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1589
1590 ipr_err("Adapter Card Information:\n");
1591 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1592 }
1593 }
1594
1595 /**
1596 * ipr_log_config_error - Log a configuration error.
1597 * @ioa_cfg: ioa config struct
1598 * @hostrcb: hostrcb struct
1599 *
1600 * Return value:
1601 * none
1602 **/
1603 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1604 struct ipr_hostrcb *hostrcb)
1605 {
1606 int errors_logged, i;
1607 struct ipr_hostrcb_device_data_entry *dev_entry;
1608 struct ipr_hostrcb_type_03_error *error;
1609
1610 error = &hostrcb->hcam.u.error.u.type_03_error;
1611 errors_logged = be32_to_cpu(error->errors_logged);
1612
1613 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1614 be32_to_cpu(error->errors_detected), errors_logged);
1615
1616 dev_entry = error->dev;
1617
1618 for (i = 0; i < errors_logged; i++, dev_entry++) {
1619 ipr_err_separator;
1620
1621 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1622 ipr_log_vpd(&dev_entry->vpd);
1623
1624 ipr_err("-----New Device Information-----\n");
1625 ipr_log_vpd(&dev_entry->new_vpd);
1626
1627 ipr_err("Cache Directory Card Information:\n");
1628 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1629
1630 ipr_err("Adapter Card Information:\n");
1631 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1632
1633 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1634 be32_to_cpu(dev_entry->ioa_data[0]),
1635 be32_to_cpu(dev_entry->ioa_data[1]),
1636 be32_to_cpu(dev_entry->ioa_data[2]),
1637 be32_to_cpu(dev_entry->ioa_data[3]),
1638 be32_to_cpu(dev_entry->ioa_data[4]));
1639 }
1640 }
1641
1642 /**
1643 * ipr_log_enhanced_array_error - Log an array configuration error.
1644 * @ioa_cfg: ioa config struct
1645 * @hostrcb: hostrcb struct
1646 *
1647 * Return value:
1648 * none
1649 **/
1650 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1651 struct ipr_hostrcb *hostrcb)
1652 {
1653 int i, num_entries;
1654 struct ipr_hostrcb_type_14_error *error;
1655 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1656 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1657
1658 error = &hostrcb->hcam.u.error.u.type_14_error;
1659
1660 ipr_err_separator;
1661
1662 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1663 error->protection_level,
1664 ioa_cfg->host->host_no,
1665 error->last_func_vset_res_addr.bus,
1666 error->last_func_vset_res_addr.target,
1667 error->last_func_vset_res_addr.lun);
1668
1669 ipr_err_separator;
1670
1671 array_entry = error->array_member;
1672 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1673 sizeof(error->array_member));
1674
1675 for (i = 0; i < num_entries; i++, array_entry++) {
1676 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1677 continue;
1678
1679 if (be32_to_cpu(error->exposed_mode_adn) == i)
1680 ipr_err("Exposed Array Member %d:\n", i);
1681 else
1682 ipr_err("Array Member %d:\n", i);
1683
1684 ipr_log_ext_vpd(&array_entry->vpd);
1685 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1686 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1687 "Expected Location");
1688
1689 ipr_err_separator;
1690 }
1691 }
1692
1693 /**
1694 * ipr_log_array_error - Log an array configuration error.
1695 * @ioa_cfg: ioa config struct
1696 * @hostrcb: hostrcb struct
1697 *
1698 * Return value:
1699 * none
1700 **/
1701 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1702 struct ipr_hostrcb *hostrcb)
1703 {
1704 int i;
1705 struct ipr_hostrcb_type_04_error *error;
1706 struct ipr_hostrcb_array_data_entry *array_entry;
1707 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1708
1709 error = &hostrcb->hcam.u.error.u.type_04_error;
1710
1711 ipr_err_separator;
1712
1713 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1714 error->protection_level,
1715 ioa_cfg->host->host_no,
1716 error->last_func_vset_res_addr.bus,
1717 error->last_func_vset_res_addr.target,
1718 error->last_func_vset_res_addr.lun);
1719
1720 ipr_err_separator;
1721
1722 array_entry = error->array_member;
1723
1724 for (i = 0; i < 18; i++) {
1725 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1726 continue;
1727
1728 if (be32_to_cpu(error->exposed_mode_adn) == i)
1729 ipr_err("Exposed Array Member %d:\n", i);
1730 else
1731 ipr_err("Array Member %d:\n", i);
1732
1733 ipr_log_vpd(&array_entry->vpd);
1734
1735 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1736 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1737 "Expected Location");
1738
1739 ipr_err_separator;
1740
1741 if (i == 9)
1742 array_entry = error->array_member2;
1743 else
1744 array_entry++;
1745 }
1746 }
1747
1748 /**
1749 * ipr_log_hex_data - Log additional hex IOA error data.
1750 * @ioa_cfg: ioa config struct
1751 * @data: IOA error data
1752 * @len: data length
1753 *
1754 * Return value:
1755 * none
1756 **/
1757 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1758 {
1759 int i;
1760
1761 if (len == 0)
1762 return;
1763
1764 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1765 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1766
1767 for (i = 0; i < len / 4; i += 4) {
1768 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1769 be32_to_cpu(data[i]),
1770 be32_to_cpu(data[i+1]),
1771 be32_to_cpu(data[i+2]),
1772 be32_to_cpu(data[i+3]));
1773 }
1774 }
1775
1776 /**
1777 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1778 * @ioa_cfg: ioa config struct
1779 * @hostrcb: hostrcb struct
1780 *
1781 * Return value:
1782 * none
1783 **/
1784 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1785 struct ipr_hostrcb *hostrcb)
1786 {
1787 struct ipr_hostrcb_type_17_error *error;
1788
1789 if (ioa_cfg->sis64)
1790 error = &hostrcb->hcam.u.error64.u.type_17_error;
1791 else
1792 error = &hostrcb->hcam.u.error.u.type_17_error;
1793
1794 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1795 strim(error->failure_reason);
1796
1797 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1798 be32_to_cpu(hostrcb->hcam.u.error.prc));
1799 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1800 ipr_log_hex_data(ioa_cfg, error->data,
1801 be32_to_cpu(hostrcb->hcam.length) -
1802 (offsetof(struct ipr_hostrcb_error, u) +
1803 offsetof(struct ipr_hostrcb_type_17_error, data)));
1804 }
1805
1806 /**
1807 * ipr_log_dual_ioa_error - Log a dual adapter error.
1808 * @ioa_cfg: ioa config struct
1809 * @hostrcb: hostrcb struct
1810 *
1811 * Return value:
1812 * none
1813 **/
1814 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1815 struct ipr_hostrcb *hostrcb)
1816 {
1817 struct ipr_hostrcb_type_07_error *error;
1818
1819 error = &hostrcb->hcam.u.error.u.type_07_error;
1820 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1821 strim(error->failure_reason);
1822
1823 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1824 be32_to_cpu(hostrcb->hcam.u.error.prc));
1825 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1826 ipr_log_hex_data(ioa_cfg, error->data,
1827 be32_to_cpu(hostrcb->hcam.length) -
1828 (offsetof(struct ipr_hostrcb_error, u) +
1829 offsetof(struct ipr_hostrcb_type_07_error, data)));
1830 }
1831
1832 static const struct {
1833 u8 active;
1834 char *desc;
1835 } path_active_desc[] = {
1836 { IPR_PATH_NO_INFO, "Path" },
1837 { IPR_PATH_ACTIVE, "Active path" },
1838 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1839 };
1840
1841 static const struct {
1842 u8 state;
1843 char *desc;
1844 } path_state_desc[] = {
1845 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1846 { IPR_PATH_HEALTHY, "is healthy" },
1847 { IPR_PATH_DEGRADED, "is degraded" },
1848 { IPR_PATH_FAILED, "is failed" }
1849 };
1850
1851 /**
1852 * ipr_log_fabric_path - Log a fabric path error
1853 * @hostrcb: hostrcb struct
1854 * @fabric: fabric descriptor
1855 *
1856 * Return value:
1857 * none
1858 **/
1859 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1860 struct ipr_hostrcb_fabric_desc *fabric)
1861 {
1862 int i, j;
1863 u8 path_state = fabric->path_state;
1864 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1865 u8 state = path_state & IPR_PATH_STATE_MASK;
1866
1867 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1868 if (path_active_desc[i].active != active)
1869 continue;
1870
1871 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1872 if (path_state_desc[j].state != state)
1873 continue;
1874
1875 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1876 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1877 path_active_desc[i].desc, path_state_desc[j].desc,
1878 fabric->ioa_port);
1879 } else if (fabric->cascaded_expander == 0xff) {
1880 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1881 path_active_desc[i].desc, path_state_desc[j].desc,
1882 fabric->ioa_port, fabric->phy);
1883 } else if (fabric->phy == 0xff) {
1884 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1885 path_active_desc[i].desc, path_state_desc[j].desc,
1886 fabric->ioa_port, fabric->cascaded_expander);
1887 } else {
1888 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1889 path_active_desc[i].desc, path_state_desc[j].desc,
1890 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1891 }
1892 return;
1893 }
1894 }
1895
1896 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1897 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1898 }
1899
1900 /**
1901 * ipr_log64_fabric_path - Log a fabric path error
1902 * @hostrcb: hostrcb struct
1903 * @fabric: fabric descriptor
1904 *
1905 * Return value:
1906 * none
1907 **/
1908 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
1909 struct ipr_hostrcb64_fabric_desc *fabric)
1910 {
1911 int i, j;
1912 u8 path_state = fabric->path_state;
1913 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1914 u8 state = path_state & IPR_PATH_STATE_MASK;
1915 char buffer[IPR_MAX_RES_PATH_LENGTH];
1916
1917 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1918 if (path_active_desc[i].active != active)
1919 continue;
1920
1921 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1922 if (path_state_desc[j].state != state)
1923 continue;
1924
1925 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
1926 path_active_desc[i].desc, path_state_desc[j].desc,
1927 ipr_format_res_path(fabric->res_path, buffer,
1928 sizeof(buffer)));
1929 return;
1930 }
1931 }
1932
1933 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
1934 ipr_format_res_path(fabric->res_path, buffer, sizeof(buffer)));
1935 }
1936
1937 static const struct {
1938 u8 type;
1939 char *desc;
1940 } path_type_desc[] = {
1941 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1942 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1943 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1944 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1945 };
1946
1947 static const struct {
1948 u8 status;
1949 char *desc;
1950 } path_status_desc[] = {
1951 { IPR_PATH_CFG_NO_PROB, "Functional" },
1952 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1953 { IPR_PATH_CFG_FAILED, "Failed" },
1954 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1955 { IPR_PATH_NOT_DETECTED, "Missing" },
1956 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1957 };
1958
1959 static const char *link_rate[] = {
1960 "unknown",
1961 "disabled",
1962 "phy reset problem",
1963 "spinup hold",
1964 "port selector",
1965 "unknown",
1966 "unknown",
1967 "unknown",
1968 "1.5Gbps",
1969 "3.0Gbps",
1970 "unknown",
1971 "unknown",
1972 "unknown",
1973 "unknown",
1974 "unknown",
1975 "unknown"
1976 };
1977
1978 /**
1979 * ipr_log_path_elem - Log a fabric path element.
1980 * @hostrcb: hostrcb struct
1981 * @cfg: fabric path element struct
1982 *
1983 * Return value:
1984 * none
1985 **/
1986 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1987 struct ipr_hostrcb_config_element *cfg)
1988 {
1989 int i, j;
1990 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1991 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1992
1993 if (type == IPR_PATH_CFG_NOT_EXIST)
1994 return;
1995
1996 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1997 if (path_type_desc[i].type != type)
1998 continue;
1999
2000 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2001 if (path_status_desc[j].status != status)
2002 continue;
2003
2004 if (type == IPR_PATH_CFG_IOA_PORT) {
2005 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2006 path_status_desc[j].desc, path_type_desc[i].desc,
2007 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2008 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2009 } else {
2010 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2011 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2012 path_status_desc[j].desc, path_type_desc[i].desc,
2013 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2014 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2015 } else if (cfg->cascaded_expander == 0xff) {
2016 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2017 "WWN=%08X%08X\n", path_status_desc[j].desc,
2018 path_type_desc[i].desc, cfg->phy,
2019 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2020 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2021 } else if (cfg->phy == 0xff) {
2022 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2023 "WWN=%08X%08X\n", path_status_desc[j].desc,
2024 path_type_desc[i].desc, cfg->cascaded_expander,
2025 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2026 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2027 } else {
2028 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2029 "WWN=%08X%08X\n", path_status_desc[j].desc,
2030 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2031 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2032 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2033 }
2034 }
2035 return;
2036 }
2037 }
2038
2039 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2040 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2041 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2042 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2043 }
2044
2045 /**
2046 * ipr_log64_path_elem - Log a fabric path element.
2047 * @hostrcb: hostrcb struct
2048 * @cfg: fabric path element struct
2049 *
2050 * Return value:
2051 * none
2052 **/
2053 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2054 struct ipr_hostrcb64_config_element *cfg)
2055 {
2056 int i, j;
2057 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2058 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2059 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2060 char buffer[IPR_MAX_RES_PATH_LENGTH];
2061
2062 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2063 return;
2064
2065 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2066 if (path_type_desc[i].type != type)
2067 continue;
2068
2069 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2070 if (path_status_desc[j].status != status)
2071 continue;
2072
2073 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2074 path_status_desc[j].desc, path_type_desc[i].desc,
2075 ipr_format_res_path(cfg->res_path, buffer,
2076 sizeof(buffer)),
2077 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2078 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2079 return;
2080 }
2081 }
2082 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2083 "WWN=%08X%08X\n", cfg->type_status,
2084 ipr_format_res_path(cfg->res_path, buffer, sizeof(buffer)),
2085 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2086 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2087 }
2088
2089 /**
2090 * ipr_log_fabric_error - Log a fabric error.
2091 * @ioa_cfg: ioa config struct
2092 * @hostrcb: hostrcb struct
2093 *
2094 * Return value:
2095 * none
2096 **/
2097 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2098 struct ipr_hostrcb *hostrcb)
2099 {
2100 struct ipr_hostrcb_type_20_error *error;
2101 struct ipr_hostrcb_fabric_desc *fabric;
2102 struct ipr_hostrcb_config_element *cfg;
2103 int i, add_len;
2104
2105 error = &hostrcb->hcam.u.error.u.type_20_error;
2106 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2107 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2108
2109 add_len = be32_to_cpu(hostrcb->hcam.length) -
2110 (offsetof(struct ipr_hostrcb_error, u) +
2111 offsetof(struct ipr_hostrcb_type_20_error, desc));
2112
2113 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2114 ipr_log_fabric_path(hostrcb, fabric);
2115 for_each_fabric_cfg(fabric, cfg)
2116 ipr_log_path_elem(hostrcb, cfg);
2117
2118 add_len -= be16_to_cpu(fabric->length);
2119 fabric = (struct ipr_hostrcb_fabric_desc *)
2120 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2121 }
2122
2123 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2124 }
2125
2126 /**
2127 * ipr_log_sis64_array_error - Log a sis64 array error.
2128 * @ioa_cfg: ioa config struct
2129 * @hostrcb: hostrcb struct
2130 *
2131 * Return value:
2132 * none
2133 **/
2134 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2135 struct ipr_hostrcb *hostrcb)
2136 {
2137 int i, num_entries;
2138 struct ipr_hostrcb_type_24_error *error;
2139 struct ipr_hostrcb64_array_data_entry *array_entry;
2140 char buffer[IPR_MAX_RES_PATH_LENGTH];
2141 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2142
2143 error = &hostrcb->hcam.u.error64.u.type_24_error;
2144
2145 ipr_err_separator;
2146
2147 ipr_err("RAID %s Array Configuration: %s\n",
2148 error->protection_level,
2149 ipr_format_res_path(error->last_res_path, buffer, sizeof(buffer)));
2150
2151 ipr_err_separator;
2152
2153 array_entry = error->array_member;
2154 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
2155 sizeof(error->array_member));
2156
2157 for (i = 0; i < num_entries; i++, array_entry++) {
2158
2159 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2160 continue;
2161
2162 if (error->exposed_mode_adn == i)
2163 ipr_err("Exposed Array Member %d:\n", i);
2164 else
2165 ipr_err("Array Member %d:\n", i);
2166
2167 ipr_err("Array Member %d:\n", i);
2168 ipr_log_ext_vpd(&array_entry->vpd);
2169 ipr_err("Current Location: %s",
2170 ipr_format_res_path(array_entry->res_path, buffer,
2171 sizeof(buffer)));
2172 ipr_err("Expected Location: %s",
2173 ipr_format_res_path(array_entry->expected_res_path,
2174 buffer, sizeof(buffer)));
2175
2176 ipr_err_separator;
2177 }
2178 }
2179
2180 /**
2181 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2182 * @ioa_cfg: ioa config struct
2183 * @hostrcb: hostrcb struct
2184 *
2185 * Return value:
2186 * none
2187 **/
2188 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2189 struct ipr_hostrcb *hostrcb)
2190 {
2191 struct ipr_hostrcb_type_30_error *error;
2192 struct ipr_hostrcb64_fabric_desc *fabric;
2193 struct ipr_hostrcb64_config_element *cfg;
2194 int i, add_len;
2195
2196 error = &hostrcb->hcam.u.error64.u.type_30_error;
2197
2198 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2199 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2200
2201 add_len = be32_to_cpu(hostrcb->hcam.length) -
2202 (offsetof(struct ipr_hostrcb64_error, u) +
2203 offsetof(struct ipr_hostrcb_type_30_error, desc));
2204
2205 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2206 ipr_log64_fabric_path(hostrcb, fabric);
2207 for_each_fabric_cfg(fabric, cfg)
2208 ipr_log64_path_elem(hostrcb, cfg);
2209
2210 add_len -= be16_to_cpu(fabric->length);
2211 fabric = (struct ipr_hostrcb64_fabric_desc *)
2212 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2213 }
2214
2215 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2216 }
2217
2218 /**
2219 * ipr_log_generic_error - Log an adapter error.
2220 * @ioa_cfg: ioa config struct
2221 * @hostrcb: hostrcb struct
2222 *
2223 * Return value:
2224 * none
2225 **/
2226 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2227 struct ipr_hostrcb *hostrcb)
2228 {
2229 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2230 be32_to_cpu(hostrcb->hcam.length));
2231 }
2232
2233 /**
2234 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2235 * @ioasc: IOASC
2236 *
2237 * This function will return the index of into the ipr_error_table
2238 * for the specified IOASC. If the IOASC is not in the table,
2239 * 0 will be returned, which points to the entry used for unknown errors.
2240 *
2241 * Return value:
2242 * index into the ipr_error_table
2243 **/
2244 static u32 ipr_get_error(u32 ioasc)
2245 {
2246 int i;
2247
2248 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2249 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2250 return i;
2251
2252 return 0;
2253 }
2254
2255 /**
2256 * ipr_handle_log_data - Log an adapter error.
2257 * @ioa_cfg: ioa config struct
2258 * @hostrcb: hostrcb struct
2259 *
2260 * This function logs an adapter error to the system.
2261 *
2262 * Return value:
2263 * none
2264 **/
2265 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2266 struct ipr_hostrcb *hostrcb)
2267 {
2268 u32 ioasc;
2269 int error_index;
2270
2271 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2272 return;
2273
2274 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2275 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2276
2277 if (ioa_cfg->sis64)
2278 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2279 else
2280 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2281
2282 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2283 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2284 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2285 scsi_report_bus_reset(ioa_cfg->host,
2286 hostrcb->hcam.u.error.fd_res_addr.bus);
2287 }
2288
2289 error_index = ipr_get_error(ioasc);
2290
2291 if (!ipr_error_table[error_index].log_hcam)
2292 return;
2293
2294 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2295
2296 /* Set indication we have logged an error */
2297 ioa_cfg->errors_logged++;
2298
2299 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2300 return;
2301 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2302 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2303
2304 switch (hostrcb->hcam.overlay_id) {
2305 case IPR_HOST_RCB_OVERLAY_ID_2:
2306 ipr_log_cache_error(ioa_cfg, hostrcb);
2307 break;
2308 case IPR_HOST_RCB_OVERLAY_ID_3:
2309 ipr_log_config_error(ioa_cfg, hostrcb);
2310 break;
2311 case IPR_HOST_RCB_OVERLAY_ID_4:
2312 case IPR_HOST_RCB_OVERLAY_ID_6:
2313 ipr_log_array_error(ioa_cfg, hostrcb);
2314 break;
2315 case IPR_HOST_RCB_OVERLAY_ID_7:
2316 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2317 break;
2318 case IPR_HOST_RCB_OVERLAY_ID_12:
2319 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2320 break;
2321 case IPR_HOST_RCB_OVERLAY_ID_13:
2322 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2323 break;
2324 case IPR_HOST_RCB_OVERLAY_ID_14:
2325 case IPR_HOST_RCB_OVERLAY_ID_16:
2326 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2327 break;
2328 case IPR_HOST_RCB_OVERLAY_ID_17:
2329 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2330 break;
2331 case IPR_HOST_RCB_OVERLAY_ID_20:
2332 ipr_log_fabric_error(ioa_cfg, hostrcb);
2333 break;
2334 case IPR_HOST_RCB_OVERLAY_ID_23:
2335 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2336 break;
2337 case IPR_HOST_RCB_OVERLAY_ID_24:
2338 case IPR_HOST_RCB_OVERLAY_ID_26:
2339 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2340 break;
2341 case IPR_HOST_RCB_OVERLAY_ID_30:
2342 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2343 break;
2344 case IPR_HOST_RCB_OVERLAY_ID_1:
2345 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2346 default:
2347 ipr_log_generic_error(ioa_cfg, hostrcb);
2348 break;
2349 }
2350 }
2351
2352 /**
2353 * ipr_process_error - Op done function for an adapter error log.
2354 * @ipr_cmd: ipr command struct
2355 *
2356 * This function is the op done function for an error log host
2357 * controlled async from the adapter. It will log the error and
2358 * send the HCAM back to the adapter.
2359 *
2360 * Return value:
2361 * none
2362 **/
2363 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2364 {
2365 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2366 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2367 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2368 u32 fd_ioasc;
2369
2370 if (ioa_cfg->sis64)
2371 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2372 else
2373 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2374
2375 list_del(&hostrcb->queue);
2376 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2377
2378 if (!ioasc) {
2379 ipr_handle_log_data(ioa_cfg, hostrcb);
2380 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2381 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2382 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2383 dev_err(&ioa_cfg->pdev->dev,
2384 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2385 }
2386
2387 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2388 }
2389
2390 /**
2391 * ipr_timeout - An internally generated op has timed out.
2392 * @ipr_cmd: ipr command struct
2393 *
2394 * This function blocks host requests and initiates an
2395 * adapter reset.
2396 *
2397 * Return value:
2398 * none
2399 **/
2400 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2401 {
2402 unsigned long lock_flags = 0;
2403 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2404
2405 ENTER;
2406 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2407
2408 ioa_cfg->errors_logged++;
2409 dev_err(&ioa_cfg->pdev->dev,
2410 "Adapter being reset due to command timeout.\n");
2411
2412 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2413 ioa_cfg->sdt_state = GET_DUMP;
2414
2415 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2416 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2417
2418 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2419 LEAVE;
2420 }
2421
2422 /**
2423 * ipr_oper_timeout - Adapter timed out transitioning to operational
2424 * @ipr_cmd: ipr command struct
2425 *
2426 * This function blocks host requests and initiates an
2427 * adapter reset.
2428 *
2429 * Return value:
2430 * none
2431 **/
2432 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2433 {
2434 unsigned long lock_flags = 0;
2435 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2436
2437 ENTER;
2438 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2439
2440 ioa_cfg->errors_logged++;
2441 dev_err(&ioa_cfg->pdev->dev,
2442 "Adapter timed out transitioning to operational.\n");
2443
2444 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2445 ioa_cfg->sdt_state = GET_DUMP;
2446
2447 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2448 if (ipr_fastfail)
2449 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2450 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2451 }
2452
2453 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2454 LEAVE;
2455 }
2456
2457 /**
2458 * ipr_reset_reload - Reset/Reload the IOA
2459 * @ioa_cfg: ioa config struct
2460 * @shutdown_type: shutdown type
2461 *
2462 * This function resets the adapter and re-initializes it.
2463 * This function assumes that all new host commands have been stopped.
2464 * Return value:
2465 * SUCCESS / FAILED
2466 **/
2467 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
2468 enum ipr_shutdown_type shutdown_type)
2469 {
2470 if (!ioa_cfg->in_reset_reload)
2471 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
2472
2473 spin_unlock_irq(ioa_cfg->host->host_lock);
2474 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2475 spin_lock_irq(ioa_cfg->host->host_lock);
2476
2477 /* If we got hit with a host reset while we were already resetting
2478 the adapter for some reason, and the reset failed. */
2479 if (ioa_cfg->ioa_is_dead) {
2480 ipr_trace;
2481 return FAILED;
2482 }
2483
2484 return SUCCESS;
2485 }
2486
2487 /**
2488 * ipr_find_ses_entry - Find matching SES in SES table
2489 * @res: resource entry struct of SES
2490 *
2491 * Return value:
2492 * pointer to SES table entry / NULL on failure
2493 **/
2494 static const struct ipr_ses_table_entry *
2495 ipr_find_ses_entry(struct ipr_resource_entry *res)
2496 {
2497 int i, j, matches;
2498 struct ipr_std_inq_vpids *vpids;
2499 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2500
2501 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2502 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2503 if (ste->compare_product_id_byte[j] == 'X') {
2504 vpids = &res->std_inq_data.vpids;
2505 if (vpids->product_id[j] == ste->product_id[j])
2506 matches++;
2507 else
2508 break;
2509 } else
2510 matches++;
2511 }
2512
2513 if (matches == IPR_PROD_ID_LEN)
2514 return ste;
2515 }
2516
2517 return NULL;
2518 }
2519
2520 /**
2521 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2522 * @ioa_cfg: ioa config struct
2523 * @bus: SCSI bus
2524 * @bus_width: bus width
2525 *
2526 * Return value:
2527 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2528 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2529 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2530 * max 160MHz = max 320MB/sec).
2531 **/
2532 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2533 {
2534 struct ipr_resource_entry *res;
2535 const struct ipr_ses_table_entry *ste;
2536 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2537
2538 /* Loop through each config table entry in the config table buffer */
2539 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2540 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2541 continue;
2542
2543 if (bus != res->bus)
2544 continue;
2545
2546 if (!(ste = ipr_find_ses_entry(res)))
2547 continue;
2548
2549 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2550 }
2551
2552 return max_xfer_rate;
2553 }
2554
2555 /**
2556 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2557 * @ioa_cfg: ioa config struct
2558 * @max_delay: max delay in micro-seconds to wait
2559 *
2560 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2561 *
2562 * Return value:
2563 * 0 on success / other on failure
2564 **/
2565 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2566 {
2567 volatile u32 pcii_reg;
2568 int delay = 1;
2569
2570 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2571 while (delay < max_delay) {
2572 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2573
2574 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2575 return 0;
2576
2577 /* udelay cannot be used if delay is more than a few milliseconds */
2578 if ((delay / 1000) > MAX_UDELAY_MS)
2579 mdelay(delay / 1000);
2580 else
2581 udelay(delay);
2582
2583 delay += delay;
2584 }
2585 return -EIO;
2586 }
2587
2588 /**
2589 * ipr_get_sis64_dump_data_section - Dump IOA memory
2590 * @ioa_cfg: ioa config struct
2591 * @start_addr: adapter address to dump
2592 * @dest: destination kernel buffer
2593 * @length_in_words: length to dump in 4 byte words
2594 *
2595 * Return value:
2596 * 0 on success
2597 **/
2598 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2599 u32 start_addr,
2600 __be32 *dest, u32 length_in_words)
2601 {
2602 int i;
2603
2604 for (i = 0; i < length_in_words; i++) {
2605 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2606 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2607 dest++;
2608 }
2609
2610 return 0;
2611 }
2612
2613 /**
2614 * ipr_get_ldump_data_section - Dump IOA memory
2615 * @ioa_cfg: ioa config struct
2616 * @start_addr: adapter address to dump
2617 * @dest: destination kernel buffer
2618 * @length_in_words: length to dump in 4 byte words
2619 *
2620 * Return value:
2621 * 0 on success / -EIO on failure
2622 **/
2623 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2624 u32 start_addr,
2625 __be32 *dest, u32 length_in_words)
2626 {
2627 volatile u32 temp_pcii_reg;
2628 int i, delay = 0;
2629
2630 if (ioa_cfg->sis64)
2631 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2632 dest, length_in_words);
2633
2634 /* Write IOA interrupt reg starting LDUMP state */
2635 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2636 ioa_cfg->regs.set_uproc_interrupt_reg32);
2637
2638 /* Wait for IO debug acknowledge */
2639 if (ipr_wait_iodbg_ack(ioa_cfg,
2640 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2641 dev_err(&ioa_cfg->pdev->dev,
2642 "IOA dump long data transfer timeout\n");
2643 return -EIO;
2644 }
2645
2646 /* Signal LDUMP interlocked - clear IO debug ack */
2647 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2648 ioa_cfg->regs.clr_interrupt_reg);
2649
2650 /* Write Mailbox with starting address */
2651 writel(start_addr, ioa_cfg->ioa_mailbox);
2652
2653 /* Signal address valid - clear IOA Reset alert */
2654 writel(IPR_UPROCI_RESET_ALERT,
2655 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2656
2657 for (i = 0; i < length_in_words; i++) {
2658 /* Wait for IO debug acknowledge */
2659 if (ipr_wait_iodbg_ack(ioa_cfg,
2660 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2661 dev_err(&ioa_cfg->pdev->dev,
2662 "IOA dump short data transfer timeout\n");
2663 return -EIO;
2664 }
2665
2666 /* Read data from mailbox and increment destination pointer */
2667 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2668 dest++;
2669
2670 /* For all but the last word of data, signal data received */
2671 if (i < (length_in_words - 1)) {
2672 /* Signal dump data received - Clear IO debug Ack */
2673 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2674 ioa_cfg->regs.clr_interrupt_reg);
2675 }
2676 }
2677
2678 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2679 writel(IPR_UPROCI_RESET_ALERT,
2680 ioa_cfg->regs.set_uproc_interrupt_reg32);
2681
2682 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2683 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2684
2685 /* Signal dump data received - Clear IO debug Ack */
2686 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2687 ioa_cfg->regs.clr_interrupt_reg);
2688
2689 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2690 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2691 temp_pcii_reg =
2692 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2693
2694 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2695 return 0;
2696
2697 udelay(10);
2698 delay += 10;
2699 }
2700
2701 return 0;
2702 }
2703
2704 #ifdef CONFIG_SCSI_IPR_DUMP
2705 /**
2706 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2707 * @ioa_cfg: ioa config struct
2708 * @pci_address: adapter address
2709 * @length: length of data to copy
2710 *
2711 * Copy data from PCI adapter to kernel buffer.
2712 * Note: length MUST be a 4 byte multiple
2713 * Return value:
2714 * 0 on success / other on failure
2715 **/
2716 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2717 unsigned long pci_address, u32 length)
2718 {
2719 int bytes_copied = 0;
2720 int cur_len, rc, rem_len, rem_page_len;
2721 __be32 *page;
2722 unsigned long lock_flags = 0;
2723 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2724
2725 while (bytes_copied < length &&
2726 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2727 if (ioa_dump->page_offset >= PAGE_SIZE ||
2728 ioa_dump->page_offset == 0) {
2729 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2730
2731 if (!page) {
2732 ipr_trace;
2733 return bytes_copied;
2734 }
2735
2736 ioa_dump->page_offset = 0;
2737 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2738 ioa_dump->next_page_index++;
2739 } else
2740 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2741
2742 rem_len = length - bytes_copied;
2743 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2744 cur_len = min(rem_len, rem_page_len);
2745
2746 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2747 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2748 rc = -EIO;
2749 } else {
2750 rc = ipr_get_ldump_data_section(ioa_cfg,
2751 pci_address + bytes_copied,
2752 &page[ioa_dump->page_offset / 4],
2753 (cur_len / sizeof(u32)));
2754 }
2755 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2756
2757 if (!rc) {
2758 ioa_dump->page_offset += cur_len;
2759 bytes_copied += cur_len;
2760 } else {
2761 ipr_trace;
2762 break;
2763 }
2764 schedule();
2765 }
2766
2767 return bytes_copied;
2768 }
2769
2770 /**
2771 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2772 * @hdr: dump entry header struct
2773 *
2774 * Return value:
2775 * nothing
2776 **/
2777 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2778 {
2779 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2780 hdr->num_elems = 1;
2781 hdr->offset = sizeof(*hdr);
2782 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2783 }
2784
2785 /**
2786 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2787 * @ioa_cfg: ioa config struct
2788 * @driver_dump: driver dump struct
2789 *
2790 * Return value:
2791 * nothing
2792 **/
2793 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2794 struct ipr_driver_dump *driver_dump)
2795 {
2796 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2797
2798 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2799 driver_dump->ioa_type_entry.hdr.len =
2800 sizeof(struct ipr_dump_ioa_type_entry) -
2801 sizeof(struct ipr_dump_entry_header);
2802 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2803 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2804 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2805 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2806 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2807 ucode_vpd->minor_release[1];
2808 driver_dump->hdr.num_entries++;
2809 }
2810
2811 /**
2812 * ipr_dump_version_data - Fill in the driver version in the dump.
2813 * @ioa_cfg: ioa config struct
2814 * @driver_dump: driver dump struct
2815 *
2816 * Return value:
2817 * nothing
2818 **/
2819 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2820 struct ipr_driver_dump *driver_dump)
2821 {
2822 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2823 driver_dump->version_entry.hdr.len =
2824 sizeof(struct ipr_dump_version_entry) -
2825 sizeof(struct ipr_dump_entry_header);
2826 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2827 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2828 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2829 driver_dump->hdr.num_entries++;
2830 }
2831
2832 /**
2833 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2834 * @ioa_cfg: ioa config struct
2835 * @driver_dump: driver dump struct
2836 *
2837 * Return value:
2838 * nothing
2839 **/
2840 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2841 struct ipr_driver_dump *driver_dump)
2842 {
2843 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2844 driver_dump->trace_entry.hdr.len =
2845 sizeof(struct ipr_dump_trace_entry) -
2846 sizeof(struct ipr_dump_entry_header);
2847 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2848 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2849 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2850 driver_dump->hdr.num_entries++;
2851 }
2852
2853 /**
2854 * ipr_dump_location_data - Fill in the IOA location in the dump.
2855 * @ioa_cfg: ioa config struct
2856 * @driver_dump: driver dump struct
2857 *
2858 * Return value:
2859 * nothing
2860 **/
2861 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2862 struct ipr_driver_dump *driver_dump)
2863 {
2864 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2865 driver_dump->location_entry.hdr.len =
2866 sizeof(struct ipr_dump_location_entry) -
2867 sizeof(struct ipr_dump_entry_header);
2868 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2869 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2870 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2871 driver_dump->hdr.num_entries++;
2872 }
2873
2874 /**
2875 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2876 * @ioa_cfg: ioa config struct
2877 * @dump: dump struct
2878 *
2879 * Return value:
2880 * nothing
2881 **/
2882 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2883 {
2884 unsigned long start_addr, sdt_word;
2885 unsigned long lock_flags = 0;
2886 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2887 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2888 u32 num_entries, start_off, end_off;
2889 u32 bytes_to_copy, bytes_copied, rc;
2890 struct ipr_sdt *sdt;
2891 int valid = 1;
2892 int i;
2893
2894 ENTER;
2895
2896 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2897
2898 if (ioa_cfg->sdt_state != GET_DUMP) {
2899 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2900 return;
2901 }
2902
2903 start_addr = readl(ioa_cfg->ioa_mailbox);
2904
2905 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
2906 dev_err(&ioa_cfg->pdev->dev,
2907 "Invalid dump table format: %lx\n", start_addr);
2908 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2909 return;
2910 }
2911
2912 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2913
2914 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2915
2916 /* Initialize the overall dump header */
2917 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2918 driver_dump->hdr.num_entries = 1;
2919 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2920 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2921 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2922 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2923
2924 ipr_dump_version_data(ioa_cfg, driver_dump);
2925 ipr_dump_location_data(ioa_cfg, driver_dump);
2926 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2927 ipr_dump_trace_data(ioa_cfg, driver_dump);
2928
2929 /* Update dump_header */
2930 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2931
2932 /* IOA Dump entry */
2933 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2934 ioa_dump->hdr.len = 0;
2935 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2936 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2937
2938 /* First entries in sdt are actually a list of dump addresses and
2939 lengths to gather the real dump data. sdt represents the pointer
2940 to the ioa generated dump table. Dump data will be extracted based
2941 on entries in this table */
2942 sdt = &ioa_dump->sdt;
2943
2944 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2945 sizeof(struct ipr_sdt) / sizeof(__be32));
2946
2947 /* Smart Dump table is ready to use and the first entry is valid */
2948 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
2949 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
2950 dev_err(&ioa_cfg->pdev->dev,
2951 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2952 rc, be32_to_cpu(sdt->hdr.state));
2953 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2954 ioa_cfg->sdt_state = DUMP_OBTAINED;
2955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2956 return;
2957 }
2958
2959 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2960
2961 if (num_entries > IPR_NUM_SDT_ENTRIES)
2962 num_entries = IPR_NUM_SDT_ENTRIES;
2963
2964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2965
2966 for (i = 0; i < num_entries; i++) {
2967 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2968 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2969 break;
2970 }
2971
2972 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2973 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
2974 if (ioa_cfg->sis64)
2975 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
2976 else {
2977 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2978 end_off = be32_to_cpu(sdt->entry[i].end_token);
2979
2980 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
2981 bytes_to_copy = end_off - start_off;
2982 else
2983 valid = 0;
2984 }
2985 if (valid) {
2986 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2987 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2988 continue;
2989 }
2990
2991 /* Copy data from adapter to driver buffers */
2992 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2993 bytes_to_copy);
2994
2995 ioa_dump->hdr.len += bytes_copied;
2996
2997 if (bytes_copied != bytes_to_copy) {
2998 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2999 break;
3000 }
3001 }
3002 }
3003 }
3004
3005 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3006
3007 /* Update dump_header */
3008 driver_dump->hdr.len += ioa_dump->hdr.len;
3009 wmb();
3010 ioa_cfg->sdt_state = DUMP_OBTAINED;
3011 LEAVE;
3012 }
3013
3014 #else
3015 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
3016 #endif
3017
3018 /**
3019 * ipr_release_dump - Free adapter dump memory
3020 * @kref: kref struct
3021 *
3022 * Return value:
3023 * nothing
3024 **/
3025 static void ipr_release_dump(struct kref *kref)
3026 {
3027 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
3028 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3029 unsigned long lock_flags = 0;
3030 int i;
3031
3032 ENTER;
3033 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3034 ioa_cfg->dump = NULL;
3035 ioa_cfg->sdt_state = INACTIVE;
3036 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3037
3038 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3039 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3040
3041 kfree(dump);
3042 LEAVE;
3043 }
3044
3045 /**
3046 * ipr_worker_thread - Worker thread
3047 * @work: ioa config struct
3048 *
3049 * Called at task level from a work thread. This function takes care
3050 * of adding and removing device from the mid-layer as configuration
3051 * changes are detected by the adapter.
3052 *
3053 * Return value:
3054 * nothing
3055 **/
3056 static void ipr_worker_thread(struct work_struct *work)
3057 {
3058 unsigned long lock_flags;
3059 struct ipr_resource_entry *res;
3060 struct scsi_device *sdev;
3061 struct ipr_dump *dump;
3062 struct ipr_ioa_cfg *ioa_cfg =
3063 container_of(work, struct ipr_ioa_cfg, work_q);
3064 u8 bus, target, lun;
3065 int did_work;
3066
3067 ENTER;
3068 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3069
3070 if (ioa_cfg->sdt_state == GET_DUMP) {
3071 dump = ioa_cfg->dump;
3072 if (!dump) {
3073 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3074 return;
3075 }
3076 kref_get(&dump->kref);
3077 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3078 ipr_get_ioa_dump(ioa_cfg, dump);
3079 kref_put(&dump->kref, ipr_release_dump);
3080
3081 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3082 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
3083 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3084 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3085 return;
3086 }
3087
3088 restart:
3089 do {
3090 did_work = 0;
3091 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
3092 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3093 return;
3094 }
3095
3096 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3097 if (res->del_from_ml && res->sdev) {
3098 did_work = 1;
3099 sdev = res->sdev;
3100 if (!scsi_device_get(sdev)) {
3101 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3103 scsi_remove_device(sdev);
3104 scsi_device_put(sdev);
3105 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3106 }
3107 break;
3108 }
3109 }
3110 } while(did_work);
3111
3112 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3113 if (res->add_to_ml) {
3114 bus = res->bus;
3115 target = res->target;
3116 lun = res->lun;
3117 res->add_to_ml = 0;
3118 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3119 scsi_add_device(ioa_cfg->host, bus, target, lun);
3120 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3121 goto restart;
3122 }
3123 }
3124
3125 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3126 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3127 LEAVE;
3128 }
3129
3130 #ifdef CONFIG_SCSI_IPR_TRACE
3131 /**
3132 * ipr_read_trace - Dump the adapter trace
3133 * @filp: open sysfs file
3134 * @kobj: kobject struct
3135 * @bin_attr: bin_attribute struct
3136 * @buf: buffer
3137 * @off: offset
3138 * @count: buffer size
3139 *
3140 * Return value:
3141 * number of bytes printed to buffer
3142 **/
3143 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3144 struct bin_attribute *bin_attr,
3145 char *buf, loff_t off, size_t count)
3146 {
3147 struct device *dev = container_of(kobj, struct device, kobj);
3148 struct Scsi_Host *shost = class_to_shost(dev);
3149 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3150 unsigned long lock_flags = 0;
3151 ssize_t ret;
3152
3153 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3154 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3155 IPR_TRACE_SIZE);
3156 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3157
3158 return ret;
3159 }
3160
3161 static struct bin_attribute ipr_trace_attr = {
3162 .attr = {
3163 .name = "trace",
3164 .mode = S_IRUGO,
3165 },
3166 .size = 0,
3167 .read = ipr_read_trace,
3168 };
3169 #endif
3170
3171 /**
3172 * ipr_show_fw_version - Show the firmware version
3173 * @dev: class device struct
3174 * @buf: buffer
3175 *
3176 * Return value:
3177 * number of bytes printed to buffer
3178 **/
3179 static ssize_t ipr_show_fw_version(struct device *dev,
3180 struct device_attribute *attr, char *buf)
3181 {
3182 struct Scsi_Host *shost = class_to_shost(dev);
3183 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3184 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3185 unsigned long lock_flags = 0;
3186 int len;
3187
3188 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3189 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3190 ucode_vpd->major_release, ucode_vpd->card_type,
3191 ucode_vpd->minor_release[0],
3192 ucode_vpd->minor_release[1]);
3193 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3194 return len;
3195 }
3196
3197 static struct device_attribute ipr_fw_version_attr = {
3198 .attr = {
3199 .name = "fw_version",
3200 .mode = S_IRUGO,
3201 },
3202 .show = ipr_show_fw_version,
3203 };
3204
3205 /**
3206 * ipr_show_log_level - Show the adapter's error logging level
3207 * @dev: class device struct
3208 * @buf: buffer
3209 *
3210 * Return value:
3211 * number of bytes printed to buffer
3212 **/
3213 static ssize_t ipr_show_log_level(struct device *dev,
3214 struct device_attribute *attr, char *buf)
3215 {
3216 struct Scsi_Host *shost = class_to_shost(dev);
3217 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
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, "%d\n", ioa_cfg->log_level);
3223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3224 return len;
3225 }
3226
3227 /**
3228 * ipr_store_log_level - Change the adapter's error logging level
3229 * @dev: class device struct
3230 * @buf: buffer
3231 *
3232 * Return value:
3233 * number of bytes printed to buffer
3234 **/
3235 static ssize_t ipr_store_log_level(struct device *dev,
3236 struct device_attribute *attr,
3237 const char *buf, size_t count)
3238 {
3239 struct Scsi_Host *shost = class_to_shost(dev);
3240 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3241 unsigned long lock_flags = 0;
3242
3243 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3244 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3245 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3246 return strlen(buf);
3247 }
3248
3249 static struct device_attribute ipr_log_level_attr = {
3250 .attr = {
3251 .name = "log_level",
3252 .mode = S_IRUGO | S_IWUSR,
3253 },
3254 .show = ipr_show_log_level,
3255 .store = ipr_store_log_level
3256 };
3257
3258 /**
3259 * ipr_store_diagnostics - IOA Diagnostics interface
3260 * @dev: device struct
3261 * @buf: buffer
3262 * @count: buffer size
3263 *
3264 * This function will reset the adapter and wait a reasonable
3265 * amount of time for any errors that the adapter might log.
3266 *
3267 * Return value:
3268 * count on success / other on failure
3269 **/
3270 static ssize_t ipr_store_diagnostics(struct device *dev,
3271 struct device_attribute *attr,
3272 const char *buf, size_t count)
3273 {
3274 struct Scsi_Host *shost = class_to_shost(dev);
3275 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3276 unsigned long lock_flags = 0;
3277 int rc = count;
3278
3279 if (!capable(CAP_SYS_ADMIN))
3280 return -EACCES;
3281
3282 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3283 while(ioa_cfg->in_reset_reload) {
3284 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3285 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3286 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3287 }
3288
3289 ioa_cfg->errors_logged = 0;
3290 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3291
3292 if (ioa_cfg->in_reset_reload) {
3293 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3294 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3295
3296 /* Wait for a second for any errors to be logged */
3297 msleep(1000);
3298 } else {
3299 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3300 return -EIO;
3301 }
3302
3303 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3304 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3305 rc = -EIO;
3306 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3307
3308 return rc;
3309 }
3310
3311 static struct device_attribute ipr_diagnostics_attr = {
3312 .attr = {
3313 .name = "run_diagnostics",
3314 .mode = S_IWUSR,
3315 },
3316 .store = ipr_store_diagnostics
3317 };
3318
3319 /**
3320 * ipr_show_adapter_state - Show the adapter's state
3321 * @class_dev: device struct
3322 * @buf: buffer
3323 *
3324 * Return value:
3325 * number of bytes printed to buffer
3326 **/
3327 static ssize_t ipr_show_adapter_state(struct device *dev,
3328 struct device_attribute *attr, char *buf)
3329 {
3330 struct Scsi_Host *shost = class_to_shost(dev);
3331 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3332 unsigned long lock_flags = 0;
3333 int len;
3334
3335 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3336 if (ioa_cfg->ioa_is_dead)
3337 len = snprintf(buf, PAGE_SIZE, "offline\n");
3338 else
3339 len = snprintf(buf, PAGE_SIZE, "online\n");
3340 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3341 return len;
3342 }
3343
3344 /**
3345 * ipr_store_adapter_state - Change adapter state
3346 * @dev: device struct
3347 * @buf: buffer
3348 * @count: buffer size
3349 *
3350 * This function will change the adapter's state.
3351 *
3352 * Return value:
3353 * count on success / other on failure
3354 **/
3355 static ssize_t ipr_store_adapter_state(struct device *dev,
3356 struct device_attribute *attr,
3357 const char *buf, size_t count)
3358 {
3359 struct Scsi_Host *shost = class_to_shost(dev);
3360 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3361 unsigned long lock_flags;
3362 int result = count;
3363
3364 if (!capable(CAP_SYS_ADMIN))
3365 return -EACCES;
3366
3367 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3368 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
3369 ioa_cfg->ioa_is_dead = 0;
3370 ioa_cfg->reset_retries = 0;
3371 ioa_cfg->in_ioa_bringdown = 0;
3372 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3373 }
3374 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3375 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3376
3377 return result;
3378 }
3379
3380 static struct device_attribute ipr_ioa_state_attr = {
3381 .attr = {
3382 .name = "online_state",
3383 .mode = S_IRUGO | S_IWUSR,
3384 },
3385 .show = ipr_show_adapter_state,
3386 .store = ipr_store_adapter_state
3387 };
3388
3389 /**
3390 * ipr_store_reset_adapter - Reset the adapter
3391 * @dev: device struct
3392 * @buf: buffer
3393 * @count: buffer size
3394 *
3395 * This function will reset the adapter.
3396 *
3397 * Return value:
3398 * count on success / other on failure
3399 **/
3400 static ssize_t ipr_store_reset_adapter(struct device *dev,
3401 struct device_attribute *attr,
3402 const char *buf, size_t count)
3403 {
3404 struct Scsi_Host *shost = class_to_shost(dev);
3405 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3406 unsigned long lock_flags;
3407 int result = count;
3408
3409 if (!capable(CAP_SYS_ADMIN))
3410 return -EACCES;
3411
3412 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3413 if (!ioa_cfg->in_reset_reload)
3414 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3415 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3416 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3417
3418 return result;
3419 }
3420
3421 static struct device_attribute ipr_ioa_reset_attr = {
3422 .attr = {
3423 .name = "reset_host",
3424 .mode = S_IWUSR,
3425 },
3426 .store = ipr_store_reset_adapter
3427 };
3428
3429 /**
3430 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3431 * @buf_len: buffer length
3432 *
3433 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3434 * list to use for microcode download
3435 *
3436 * Return value:
3437 * pointer to sglist / NULL on failure
3438 **/
3439 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3440 {
3441 int sg_size, order, bsize_elem, num_elem, i, j;
3442 struct ipr_sglist *sglist;
3443 struct scatterlist *scatterlist;
3444 struct page *page;
3445
3446 /* Get the minimum size per scatter/gather element */
3447 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3448
3449 /* Get the actual size per element */
3450 order = get_order(sg_size);
3451
3452 /* Determine the actual number of bytes per element */
3453 bsize_elem = PAGE_SIZE * (1 << order);
3454
3455 /* Determine the actual number of sg entries needed */
3456 if (buf_len % bsize_elem)
3457 num_elem = (buf_len / bsize_elem) + 1;
3458 else
3459 num_elem = buf_len / bsize_elem;
3460
3461 /* Allocate a scatter/gather list for the DMA */
3462 sglist = kzalloc(sizeof(struct ipr_sglist) +
3463 (sizeof(struct scatterlist) * (num_elem - 1)),
3464 GFP_KERNEL);
3465
3466 if (sglist == NULL) {
3467 ipr_trace;
3468 return NULL;
3469 }
3470
3471 scatterlist = sglist->scatterlist;
3472 sg_init_table(scatterlist, num_elem);
3473
3474 sglist->order = order;
3475 sglist->num_sg = num_elem;
3476
3477 /* Allocate a bunch of sg elements */
3478 for (i = 0; i < num_elem; i++) {
3479 page = alloc_pages(GFP_KERNEL, order);
3480 if (!page) {
3481 ipr_trace;
3482
3483 /* Free up what we already allocated */
3484 for (j = i - 1; j >= 0; j--)
3485 __free_pages(sg_page(&scatterlist[j]), order);
3486 kfree(sglist);
3487 return NULL;
3488 }
3489
3490 sg_set_page(&scatterlist[i], page, 0, 0);
3491 }
3492
3493 return sglist;
3494 }
3495
3496 /**
3497 * ipr_free_ucode_buffer - Frees a microcode download buffer
3498 * @p_dnld: scatter/gather list pointer
3499 *
3500 * Free a DMA'able ucode download buffer previously allocated with
3501 * ipr_alloc_ucode_buffer
3502 *
3503 * Return value:
3504 * nothing
3505 **/
3506 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3507 {
3508 int i;
3509
3510 for (i = 0; i < sglist->num_sg; i++)
3511 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3512
3513 kfree(sglist);
3514 }
3515
3516 /**
3517 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3518 * @sglist: scatter/gather list pointer
3519 * @buffer: buffer pointer
3520 * @len: buffer length
3521 *
3522 * Copy a microcode image from a user buffer into a buffer allocated by
3523 * ipr_alloc_ucode_buffer
3524 *
3525 * Return value:
3526 * 0 on success / other on failure
3527 **/
3528 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3529 u8 *buffer, u32 len)
3530 {
3531 int bsize_elem, i, result = 0;
3532 struct scatterlist *scatterlist;
3533 void *kaddr;
3534
3535 /* Determine the actual number of bytes per element */
3536 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3537
3538 scatterlist = sglist->scatterlist;
3539
3540 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3541 struct page *page = sg_page(&scatterlist[i]);
3542
3543 kaddr = kmap(page);
3544 memcpy(kaddr, buffer, bsize_elem);
3545 kunmap(page);
3546
3547 scatterlist[i].length = bsize_elem;
3548
3549 if (result != 0) {
3550 ipr_trace;
3551 return result;
3552 }
3553 }
3554
3555 if (len % bsize_elem) {
3556 struct page *page = sg_page(&scatterlist[i]);
3557
3558 kaddr = kmap(page);
3559 memcpy(kaddr, buffer, len % bsize_elem);
3560 kunmap(page);
3561
3562 scatterlist[i].length = len % bsize_elem;
3563 }
3564
3565 sglist->buffer_len = len;
3566 return result;
3567 }
3568
3569 /**
3570 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3571 * @ipr_cmd: ipr command struct
3572 * @sglist: scatter/gather list
3573 *
3574 * Builds a microcode download IOA data list (IOADL).
3575 *
3576 **/
3577 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3578 struct ipr_sglist *sglist)
3579 {
3580 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3581 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3582 struct scatterlist *scatterlist = sglist->scatterlist;
3583 int i;
3584
3585 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3586 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3587 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3588
3589 ioarcb->ioadl_len =
3590 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3591 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3592 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3593 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3594 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3595 }
3596
3597 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3598 }
3599
3600 /**
3601 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3602 * @ipr_cmd: ipr command struct
3603 * @sglist: scatter/gather list
3604 *
3605 * Builds a microcode download IOA data list (IOADL).
3606 *
3607 **/
3608 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3609 struct ipr_sglist *sglist)
3610 {
3611 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3612 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3613 struct scatterlist *scatterlist = sglist->scatterlist;
3614 int i;
3615
3616 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3617 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3618 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3619
3620 ioarcb->ioadl_len =
3621 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3622
3623 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3624 ioadl[i].flags_and_data_len =
3625 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3626 ioadl[i].address =
3627 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3628 }
3629
3630 ioadl[i-1].flags_and_data_len |=
3631 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3632 }
3633
3634 /**
3635 * ipr_update_ioa_ucode - Update IOA's microcode
3636 * @ioa_cfg: ioa config struct
3637 * @sglist: scatter/gather list
3638 *
3639 * Initiate an adapter reset to update the IOA's microcode
3640 *
3641 * Return value:
3642 * 0 on success / -EIO on failure
3643 **/
3644 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3645 struct ipr_sglist *sglist)
3646 {
3647 unsigned long lock_flags;
3648
3649 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3650 while(ioa_cfg->in_reset_reload) {
3651 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3652 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3653 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3654 }
3655
3656 if (ioa_cfg->ucode_sglist) {
3657 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3658 dev_err(&ioa_cfg->pdev->dev,
3659 "Microcode download already in progress\n");
3660 return -EIO;
3661 }
3662
3663 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3664 sglist->num_sg, DMA_TO_DEVICE);
3665
3666 if (!sglist->num_dma_sg) {
3667 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3668 dev_err(&ioa_cfg->pdev->dev,
3669 "Failed to map microcode download buffer!\n");
3670 return -EIO;
3671 }
3672
3673 ioa_cfg->ucode_sglist = sglist;
3674 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3675 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3676 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3677
3678 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3679 ioa_cfg->ucode_sglist = NULL;
3680 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3681 return 0;
3682 }
3683
3684 /**
3685 * ipr_store_update_fw - Update the firmware on the adapter
3686 * @class_dev: device struct
3687 * @buf: buffer
3688 * @count: buffer size
3689 *
3690 * This function will update the firmware on the adapter.
3691 *
3692 * Return value:
3693 * count on success / other on failure
3694 **/
3695 static ssize_t ipr_store_update_fw(struct device *dev,
3696 struct device_attribute *attr,
3697 const char *buf, size_t count)
3698 {
3699 struct Scsi_Host *shost = class_to_shost(dev);
3700 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3701 struct ipr_ucode_image_header *image_hdr;
3702 const struct firmware *fw_entry;
3703 struct ipr_sglist *sglist;
3704 char fname[100];
3705 char *src;
3706 int len, result, dnld_size;
3707
3708 if (!capable(CAP_SYS_ADMIN))
3709 return -EACCES;
3710
3711 len = snprintf(fname, 99, "%s", buf);
3712 fname[len-1] = '\0';
3713
3714 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3715 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3716 return -EIO;
3717 }
3718
3719 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3720
3721 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3722 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3723 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3724 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3725 release_firmware(fw_entry);
3726 return -EINVAL;
3727 }
3728
3729 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3730 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3731 sglist = ipr_alloc_ucode_buffer(dnld_size);
3732
3733 if (!sglist) {
3734 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3735 release_firmware(fw_entry);
3736 return -ENOMEM;
3737 }
3738
3739 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3740
3741 if (result) {
3742 dev_err(&ioa_cfg->pdev->dev,
3743 "Microcode buffer copy to DMA buffer failed\n");
3744 goto out;
3745 }
3746
3747 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3748
3749 if (!result)
3750 result = count;
3751 out:
3752 ipr_free_ucode_buffer(sglist);
3753 release_firmware(fw_entry);
3754 return result;
3755 }
3756
3757 static struct device_attribute ipr_update_fw_attr = {
3758 .attr = {
3759 .name = "update_fw",
3760 .mode = S_IWUSR,
3761 },
3762 .store = ipr_store_update_fw
3763 };
3764
3765 /**
3766 * ipr_show_fw_type - Show the adapter's firmware type.
3767 * @dev: class device struct
3768 * @buf: buffer
3769 *
3770 * Return value:
3771 * number of bytes printed to buffer
3772 **/
3773 static ssize_t ipr_show_fw_type(struct device *dev,
3774 struct device_attribute *attr, char *buf)
3775 {
3776 struct Scsi_Host *shost = class_to_shost(dev);
3777 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3778 unsigned long lock_flags = 0;
3779 int len;
3780
3781 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3782 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
3783 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3784 return len;
3785 }
3786
3787 static struct device_attribute ipr_ioa_fw_type_attr = {
3788 .attr = {
3789 .name = "fw_type",
3790 .mode = S_IRUGO,
3791 },
3792 .show = ipr_show_fw_type
3793 };
3794
3795 static struct device_attribute *ipr_ioa_attrs[] = {
3796 &ipr_fw_version_attr,
3797 &ipr_log_level_attr,
3798 &ipr_diagnostics_attr,
3799 &ipr_ioa_state_attr,
3800 &ipr_ioa_reset_attr,
3801 &ipr_update_fw_attr,
3802 &ipr_ioa_fw_type_attr,
3803 NULL,
3804 };
3805
3806 #ifdef CONFIG_SCSI_IPR_DUMP
3807 /**
3808 * ipr_read_dump - Dump the adapter
3809 * @filp: open sysfs file
3810 * @kobj: kobject struct
3811 * @bin_attr: bin_attribute struct
3812 * @buf: buffer
3813 * @off: offset
3814 * @count: buffer size
3815 *
3816 * Return value:
3817 * number of bytes printed to buffer
3818 **/
3819 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
3820 struct bin_attribute *bin_attr,
3821 char *buf, loff_t off, size_t count)
3822 {
3823 struct device *cdev = container_of(kobj, struct device, kobj);
3824 struct Scsi_Host *shost = class_to_shost(cdev);
3825 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3826 struct ipr_dump *dump;
3827 unsigned long lock_flags = 0;
3828 char *src;
3829 int len;
3830 size_t rc = count;
3831
3832 if (!capable(CAP_SYS_ADMIN))
3833 return -EACCES;
3834
3835 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3836 dump = ioa_cfg->dump;
3837
3838 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3839 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3840 return 0;
3841 }
3842 kref_get(&dump->kref);
3843 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3844
3845 if (off > dump->driver_dump.hdr.len) {
3846 kref_put(&dump->kref, ipr_release_dump);
3847 return 0;
3848 }
3849
3850 if (off + count > dump->driver_dump.hdr.len) {
3851 count = dump->driver_dump.hdr.len - off;
3852 rc = count;
3853 }
3854
3855 if (count && off < sizeof(dump->driver_dump)) {
3856 if (off + count > sizeof(dump->driver_dump))
3857 len = sizeof(dump->driver_dump) - off;
3858 else
3859 len = count;
3860 src = (u8 *)&dump->driver_dump + off;
3861 memcpy(buf, src, len);
3862 buf += len;
3863 off += len;
3864 count -= len;
3865 }
3866
3867 off -= sizeof(dump->driver_dump);
3868
3869 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3870 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3871 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3872 else
3873 len = count;
3874 src = (u8 *)&dump->ioa_dump + off;
3875 memcpy(buf, src, len);
3876 buf += len;
3877 off += len;
3878 count -= len;
3879 }
3880
3881 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3882
3883 while (count) {
3884 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3885 len = PAGE_ALIGN(off) - off;
3886 else
3887 len = count;
3888 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3889 src += off & ~PAGE_MASK;
3890 memcpy(buf, src, len);
3891 buf += len;
3892 off += len;
3893 count -= len;
3894 }
3895
3896 kref_put(&dump->kref, ipr_release_dump);
3897 return rc;
3898 }
3899
3900 /**
3901 * ipr_alloc_dump - Prepare for adapter dump
3902 * @ioa_cfg: ioa config struct
3903 *
3904 * Return value:
3905 * 0 on success / other on failure
3906 **/
3907 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3908 {
3909 struct ipr_dump *dump;
3910 unsigned long lock_flags = 0;
3911
3912 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3913
3914 if (!dump) {
3915 ipr_err("Dump memory allocation failed\n");
3916 return -ENOMEM;
3917 }
3918
3919 kref_init(&dump->kref);
3920 dump->ioa_cfg = ioa_cfg;
3921
3922 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3923
3924 if (INACTIVE != ioa_cfg->sdt_state) {
3925 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3926 kfree(dump);
3927 return 0;
3928 }
3929
3930 ioa_cfg->dump = dump;
3931 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3932 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3933 ioa_cfg->dump_taken = 1;
3934 schedule_work(&ioa_cfg->work_q);
3935 }
3936 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3937
3938 return 0;
3939 }
3940
3941 /**
3942 * ipr_free_dump - Free adapter dump memory
3943 * @ioa_cfg: ioa config struct
3944 *
3945 * Return value:
3946 * 0 on success / other on failure
3947 **/
3948 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3949 {
3950 struct ipr_dump *dump;
3951 unsigned long lock_flags = 0;
3952
3953 ENTER;
3954
3955 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3956 dump = ioa_cfg->dump;
3957 if (!dump) {
3958 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3959 return 0;
3960 }
3961
3962 ioa_cfg->dump = NULL;
3963 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3964
3965 kref_put(&dump->kref, ipr_release_dump);
3966
3967 LEAVE;
3968 return 0;
3969 }
3970
3971 /**
3972 * ipr_write_dump - Setup dump state of adapter
3973 * @filp: open sysfs file
3974 * @kobj: kobject struct
3975 * @bin_attr: bin_attribute struct
3976 * @buf: buffer
3977 * @off: offset
3978 * @count: buffer size
3979 *
3980 * Return value:
3981 * number of bytes printed to buffer
3982 **/
3983 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
3984 struct bin_attribute *bin_attr,
3985 char *buf, loff_t off, size_t count)
3986 {
3987 struct device *cdev = container_of(kobj, struct device, kobj);
3988 struct Scsi_Host *shost = class_to_shost(cdev);
3989 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3990 int rc;
3991
3992 if (!capable(CAP_SYS_ADMIN))
3993 return -EACCES;
3994
3995 if (buf[0] == '1')
3996 rc = ipr_alloc_dump(ioa_cfg);
3997 else if (buf[0] == '0')
3998 rc = ipr_free_dump(ioa_cfg);
3999 else
4000 return -EINVAL;
4001
4002 if (rc)
4003 return rc;
4004 else
4005 return count;
4006 }
4007
4008 static struct bin_attribute ipr_dump_attr = {
4009 .attr = {
4010 .name = "dump",
4011 .mode = S_IRUSR | S_IWUSR,
4012 },
4013 .size = 0,
4014 .read = ipr_read_dump,
4015 .write = ipr_write_dump
4016 };
4017 #else
4018 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4019 #endif
4020
4021 /**
4022 * ipr_change_queue_depth - Change the device's queue depth
4023 * @sdev: scsi device struct
4024 * @qdepth: depth to set
4025 * @reason: calling context
4026 *
4027 * Return value:
4028 * actual depth set
4029 **/
4030 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4031 int reason)
4032 {
4033 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4034 struct ipr_resource_entry *res;
4035 unsigned long lock_flags = 0;
4036
4037 if (reason != SCSI_QDEPTH_DEFAULT)
4038 return -EOPNOTSUPP;
4039
4040 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4041 res = (struct ipr_resource_entry *)sdev->hostdata;
4042
4043 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4044 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4045 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4046
4047 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4048 return sdev->queue_depth;
4049 }
4050
4051 /**
4052 * ipr_change_queue_type - Change the device's queue type
4053 * @dsev: scsi device struct
4054 * @tag_type: type of tags to use
4055 *
4056 * Return value:
4057 * actual queue type set
4058 **/
4059 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4060 {
4061 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4062 struct ipr_resource_entry *res;
4063 unsigned long lock_flags = 0;
4064
4065 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4066 res = (struct ipr_resource_entry *)sdev->hostdata;
4067
4068 if (res) {
4069 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4070 /*
4071 * We don't bother quiescing the device here since the
4072 * adapter firmware does it for us.
4073 */
4074 scsi_set_tag_type(sdev, tag_type);
4075
4076 if (tag_type)
4077 scsi_activate_tcq(sdev, sdev->queue_depth);
4078 else
4079 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4080 } else
4081 tag_type = 0;
4082 } else
4083 tag_type = 0;
4084
4085 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4086 return tag_type;
4087 }
4088
4089 /**
4090 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4091 * @dev: device struct
4092 * @buf: buffer
4093 *
4094 * Return value:
4095 * number of bytes printed to buffer
4096 **/
4097 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4098 {
4099 struct scsi_device *sdev = to_scsi_device(dev);
4100 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4101 struct ipr_resource_entry *res;
4102 unsigned long lock_flags = 0;
4103 ssize_t len = -ENXIO;
4104
4105 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4106 res = (struct ipr_resource_entry *)sdev->hostdata;
4107 if (res)
4108 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4109 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4110 return len;
4111 }
4112
4113 static struct device_attribute ipr_adapter_handle_attr = {
4114 .attr = {
4115 .name = "adapter_handle",
4116 .mode = S_IRUSR,
4117 },
4118 .show = ipr_show_adapter_handle
4119 };
4120
4121 /**
4122 * ipr_show_resource_path - Show the resource path or the resource address for
4123 * this device.
4124 * @dev: device struct
4125 * @buf: buffer
4126 *
4127 * Return value:
4128 * number of bytes printed to buffer
4129 **/
4130 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4131 {
4132 struct scsi_device *sdev = to_scsi_device(dev);
4133 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4134 struct ipr_resource_entry *res;
4135 unsigned long lock_flags = 0;
4136 ssize_t len = -ENXIO;
4137 char buffer[IPR_MAX_RES_PATH_LENGTH];
4138
4139 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4140 res = (struct ipr_resource_entry *)sdev->hostdata;
4141 if (res && ioa_cfg->sis64)
4142 len = snprintf(buf, PAGE_SIZE, "%s\n",
4143 ipr_format_res_path(res->res_path, buffer,
4144 sizeof(buffer)));
4145 else if (res)
4146 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4147 res->bus, res->target, res->lun);
4148
4149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4150 return len;
4151 }
4152
4153 static struct device_attribute ipr_resource_path_attr = {
4154 .attr = {
4155 .name = "resource_path",
4156 .mode = S_IRUGO,
4157 },
4158 .show = ipr_show_resource_path
4159 };
4160
4161 /**
4162 * ipr_show_resource_type - Show the resource type for this device.
4163 * @dev: device struct
4164 * @buf: buffer
4165 *
4166 * Return value:
4167 * number of bytes printed to buffer
4168 **/
4169 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4170 {
4171 struct scsi_device *sdev = to_scsi_device(dev);
4172 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4173 struct ipr_resource_entry *res;
4174 unsigned long lock_flags = 0;
4175 ssize_t len = -ENXIO;
4176
4177 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4178 res = (struct ipr_resource_entry *)sdev->hostdata;
4179
4180 if (res)
4181 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4182
4183 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4184 return len;
4185 }
4186
4187 static struct device_attribute ipr_resource_type_attr = {
4188 .attr = {
4189 .name = "resource_type",
4190 .mode = S_IRUGO,
4191 },
4192 .show = ipr_show_resource_type
4193 };
4194
4195 static struct device_attribute *ipr_dev_attrs[] = {
4196 &ipr_adapter_handle_attr,
4197 &ipr_resource_path_attr,
4198 &ipr_resource_type_attr,
4199 NULL,
4200 };
4201
4202 /**
4203 * ipr_biosparam - Return the HSC mapping
4204 * @sdev: scsi device struct
4205 * @block_device: block device pointer
4206 * @capacity: capacity of the device
4207 * @parm: Array containing returned HSC values.
4208 *
4209 * This function generates the HSC parms that fdisk uses.
4210 * We want to make sure we return something that places partitions
4211 * on 4k boundaries for best performance with the IOA.
4212 *
4213 * Return value:
4214 * 0 on success
4215 **/
4216 static int ipr_biosparam(struct scsi_device *sdev,
4217 struct block_device *block_device,
4218 sector_t capacity, int *parm)
4219 {
4220 int heads, sectors;
4221 sector_t cylinders;
4222
4223 heads = 128;
4224 sectors = 32;
4225
4226 cylinders = capacity;
4227 sector_div(cylinders, (128 * 32));
4228
4229 /* return result */
4230 parm[0] = heads;
4231 parm[1] = sectors;
4232 parm[2] = cylinders;
4233
4234 return 0;
4235 }
4236
4237 /**
4238 * ipr_find_starget - Find target based on bus/target.
4239 * @starget: scsi target struct
4240 *
4241 * Return value:
4242 * resource entry pointer if found / NULL if not found
4243 **/
4244 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4245 {
4246 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4247 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4248 struct ipr_resource_entry *res;
4249
4250 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4251 if ((res->bus == starget->channel) &&
4252 (res->target == starget->id) &&
4253 (res->lun == 0)) {
4254 return res;
4255 }
4256 }
4257
4258 return NULL;
4259 }
4260
4261 static struct ata_port_info sata_port_info;
4262
4263 /**
4264 * ipr_target_alloc - Prepare for commands to a SCSI target
4265 * @starget: scsi target struct
4266 *
4267 * If the device is a SATA device, this function allocates an
4268 * ATA port with libata, else it does nothing.
4269 *
4270 * Return value:
4271 * 0 on success / non-0 on failure
4272 **/
4273 static int ipr_target_alloc(struct scsi_target *starget)
4274 {
4275 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4276 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4277 struct ipr_sata_port *sata_port;
4278 struct ata_port *ap;
4279 struct ipr_resource_entry *res;
4280 unsigned long lock_flags;
4281
4282 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4283 res = ipr_find_starget(starget);
4284 starget->hostdata = NULL;
4285
4286 if (res && ipr_is_gata(res)) {
4287 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4288 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4289 if (!sata_port)
4290 return -ENOMEM;
4291
4292 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4293 if (ap) {
4294 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4295 sata_port->ioa_cfg = ioa_cfg;
4296 sata_port->ap = ap;
4297 sata_port->res = res;
4298
4299 res->sata_port = sata_port;
4300 ap->private_data = sata_port;
4301 starget->hostdata = sata_port;
4302 } else {
4303 kfree(sata_port);
4304 return -ENOMEM;
4305 }
4306 }
4307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4308
4309 return 0;
4310 }
4311
4312 /**
4313 * ipr_target_destroy - Destroy a SCSI target
4314 * @starget: scsi target struct
4315 *
4316 * If the device was a SATA device, this function frees the libata
4317 * ATA port, else it does nothing.
4318 *
4319 **/
4320 static void ipr_target_destroy(struct scsi_target *starget)
4321 {
4322 struct ipr_sata_port *sata_port = starget->hostdata;
4323 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4324 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4325
4326 if (ioa_cfg->sis64) {
4327 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4328 clear_bit(starget->id, ioa_cfg->array_ids);
4329 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4330 clear_bit(starget->id, ioa_cfg->vset_ids);
4331 else if (starget->channel == 0)
4332 clear_bit(starget->id, ioa_cfg->target_ids);
4333 }
4334
4335 if (sata_port) {
4336 starget->hostdata = NULL;
4337 ata_sas_port_destroy(sata_port->ap);
4338 kfree(sata_port);
4339 }
4340 }
4341
4342 /**
4343 * ipr_find_sdev - Find device based on bus/target/lun.
4344 * @sdev: scsi device struct
4345 *
4346 * Return value:
4347 * resource entry pointer if found / NULL if not found
4348 **/
4349 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4350 {
4351 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4352 struct ipr_resource_entry *res;
4353
4354 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4355 if ((res->bus == sdev->channel) &&
4356 (res->target == sdev->id) &&
4357 (res->lun == sdev->lun))
4358 return res;
4359 }
4360
4361 return NULL;
4362 }
4363
4364 /**
4365 * ipr_slave_destroy - Unconfigure a SCSI device
4366 * @sdev: scsi device struct
4367 *
4368 * Return value:
4369 * nothing
4370 **/
4371 static void ipr_slave_destroy(struct scsi_device *sdev)
4372 {
4373 struct ipr_resource_entry *res;
4374 struct ipr_ioa_cfg *ioa_cfg;
4375 unsigned long lock_flags = 0;
4376
4377 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4378
4379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4380 res = (struct ipr_resource_entry *) sdev->hostdata;
4381 if (res) {
4382 if (res->sata_port)
4383 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4384 sdev->hostdata = NULL;
4385 res->sdev = NULL;
4386 res->sata_port = NULL;
4387 }
4388 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4389 }
4390
4391 /**
4392 * ipr_slave_configure - Configure a SCSI device
4393 * @sdev: scsi device struct
4394 *
4395 * This function configures the specified scsi device.
4396 *
4397 * Return value:
4398 * 0 on success
4399 **/
4400 static int ipr_slave_configure(struct scsi_device *sdev)
4401 {
4402 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4403 struct ipr_resource_entry *res;
4404 struct ata_port *ap = NULL;
4405 unsigned long lock_flags = 0;
4406 char buffer[IPR_MAX_RES_PATH_LENGTH];
4407
4408 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4409 res = sdev->hostdata;
4410 if (res) {
4411 if (ipr_is_af_dasd_device(res))
4412 sdev->type = TYPE_RAID;
4413 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4414 sdev->scsi_level = 4;
4415 sdev->no_uld_attach = 1;
4416 }
4417 if (ipr_is_vset_device(res)) {
4418 blk_queue_rq_timeout(sdev->request_queue,
4419 IPR_VSET_RW_TIMEOUT);
4420 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4421 }
4422 if (ipr_is_gata(res) && res->sata_port)
4423 ap = res->sata_port->ap;
4424 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4425
4426 if (ap) {
4427 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
4428 ata_sas_slave_configure(sdev, ap);
4429 } else
4430 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4431 if (ioa_cfg->sis64)
4432 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4433 ipr_format_res_path(res->res_path, buffer,
4434 sizeof(buffer)));
4435 return 0;
4436 }
4437 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4438 return 0;
4439 }
4440
4441 /**
4442 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4443 * @sdev: scsi device struct
4444 *
4445 * This function initializes an ATA port so that future commands
4446 * sent through queuecommand will work.
4447 *
4448 * Return value:
4449 * 0 on success
4450 **/
4451 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4452 {
4453 struct ipr_sata_port *sata_port = NULL;
4454 int rc = -ENXIO;
4455
4456 ENTER;
4457 if (sdev->sdev_target)
4458 sata_port = sdev->sdev_target->hostdata;
4459 if (sata_port)
4460 rc = ata_sas_port_init(sata_port->ap);
4461 if (rc)
4462 ipr_slave_destroy(sdev);
4463
4464 LEAVE;
4465 return rc;
4466 }
4467
4468 /**
4469 * ipr_slave_alloc - Prepare for commands to a device.
4470 * @sdev: scsi device struct
4471 *
4472 * This function saves a pointer to the resource entry
4473 * in the scsi device struct if the device exists. We
4474 * can then use this pointer in ipr_queuecommand when
4475 * handling new commands.
4476 *
4477 * Return value:
4478 * 0 on success / -ENXIO if device does not exist
4479 **/
4480 static int ipr_slave_alloc(struct scsi_device *sdev)
4481 {
4482 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4483 struct ipr_resource_entry *res;
4484 unsigned long lock_flags;
4485 int rc = -ENXIO;
4486
4487 sdev->hostdata = NULL;
4488
4489 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4490
4491 res = ipr_find_sdev(sdev);
4492 if (res) {
4493 res->sdev = sdev;
4494 res->add_to_ml = 0;
4495 res->in_erp = 0;
4496 sdev->hostdata = res;
4497 if (!ipr_is_naca_model(res))
4498 res->needs_sync_complete = 1;
4499 rc = 0;
4500 if (ipr_is_gata(res)) {
4501 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4502 return ipr_ata_slave_alloc(sdev);
4503 }
4504 }
4505
4506 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4507
4508 return rc;
4509 }
4510
4511 /**
4512 * ipr_eh_host_reset - Reset the host adapter
4513 * @scsi_cmd: scsi command struct
4514 *
4515 * Return value:
4516 * SUCCESS / FAILED
4517 **/
4518 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
4519 {
4520 struct ipr_ioa_cfg *ioa_cfg;
4521 int rc;
4522
4523 ENTER;
4524 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4525
4526 dev_err(&ioa_cfg->pdev->dev,
4527 "Adapter being reset as a result of error recovery.\n");
4528
4529 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4530 ioa_cfg->sdt_state = GET_DUMP;
4531
4532 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4533
4534 LEAVE;
4535 return rc;
4536 }
4537
4538 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
4539 {
4540 int rc;
4541
4542 spin_lock_irq(cmd->device->host->host_lock);
4543 rc = __ipr_eh_host_reset(cmd);
4544 spin_unlock_irq(cmd->device->host->host_lock);
4545
4546 return rc;
4547 }
4548
4549 /**
4550 * ipr_device_reset - Reset the device
4551 * @ioa_cfg: ioa config struct
4552 * @res: resource entry struct
4553 *
4554 * This function issues a device reset to the affected device.
4555 * If the device is a SCSI device, a LUN reset will be sent
4556 * to the device first. If that does not work, a target reset
4557 * will be sent. If the device is a SATA device, a PHY reset will
4558 * be sent.
4559 *
4560 * Return value:
4561 * 0 on success / non-zero on failure
4562 **/
4563 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4564 struct ipr_resource_entry *res)
4565 {
4566 struct ipr_cmnd *ipr_cmd;
4567 struct ipr_ioarcb *ioarcb;
4568 struct ipr_cmd_pkt *cmd_pkt;
4569 struct ipr_ioarcb_ata_regs *regs;
4570 u32 ioasc;
4571
4572 ENTER;
4573 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4574 ioarcb = &ipr_cmd->ioarcb;
4575 cmd_pkt = &ioarcb->cmd_pkt;
4576
4577 if (ipr_cmd->ioa_cfg->sis64) {
4578 regs = &ipr_cmd->i.ata_ioadl.regs;
4579 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4580 } else
4581 regs = &ioarcb->u.add_data.u.regs;
4582
4583 ioarcb->res_handle = res->res_handle;
4584 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4585 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4586 if (ipr_is_gata(res)) {
4587 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
4588 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
4589 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4590 }
4591
4592 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4593 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4594 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4595 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4596 if (ipr_cmd->ioa_cfg->sis64)
4597 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4598 sizeof(struct ipr_ioasa_gata));
4599 else
4600 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4601 sizeof(struct ipr_ioasa_gata));
4602 }
4603
4604 LEAVE;
4605 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
4606 }
4607
4608 /**
4609 * ipr_sata_reset - Reset the SATA port
4610 * @link: SATA link to reset
4611 * @classes: class of the attached device
4612 *
4613 * This function issues a SATA phy reset to the affected ATA link.
4614 *
4615 * Return value:
4616 * 0 on success / non-zero on failure
4617 **/
4618 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
4619 unsigned long deadline)
4620 {
4621 struct ipr_sata_port *sata_port = link->ap->private_data;
4622 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4623 struct ipr_resource_entry *res;
4624 unsigned long lock_flags = 0;
4625 int rc = -ENXIO;
4626
4627 ENTER;
4628 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4629 while(ioa_cfg->in_reset_reload) {
4630 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4631 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4632 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4633 }
4634
4635 res = sata_port->res;
4636 if (res) {
4637 rc = ipr_device_reset(ioa_cfg, res);
4638 *classes = res->ata_class;
4639 }
4640
4641 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4642 LEAVE;
4643 return rc;
4644 }
4645
4646 /**
4647 * ipr_eh_dev_reset - Reset the device
4648 * @scsi_cmd: scsi command struct
4649 *
4650 * This function issues a device reset to the affected device.
4651 * A LUN reset will be sent to the device first. If that does
4652 * not work, a target reset will be sent.
4653 *
4654 * Return value:
4655 * SUCCESS / FAILED
4656 **/
4657 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
4658 {
4659 struct ipr_cmnd *ipr_cmd;
4660 struct ipr_ioa_cfg *ioa_cfg;
4661 struct ipr_resource_entry *res;
4662 struct ata_port *ap;
4663 int rc = 0;
4664
4665 ENTER;
4666 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4667 res = scsi_cmd->device->hostdata;
4668
4669 if (!res)
4670 return FAILED;
4671
4672 /*
4673 * If we are currently going through reset/reload, return failed. This will force the
4674 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4675 * reset to complete
4676 */
4677 if (ioa_cfg->in_reset_reload)
4678 return FAILED;
4679 if (ioa_cfg->ioa_is_dead)
4680 return FAILED;
4681
4682 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4683 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4684 if (ipr_cmd->scsi_cmd)
4685 ipr_cmd->done = ipr_scsi_eh_done;
4686 if (ipr_cmd->qc)
4687 ipr_cmd->done = ipr_sata_eh_done;
4688 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4689 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4690 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4691 }
4692 }
4693 }
4694
4695 res->resetting_device = 1;
4696 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
4697
4698 if (ipr_is_gata(res) && res->sata_port) {
4699 ap = res->sata_port->ap;
4700 spin_unlock_irq(scsi_cmd->device->host->host_lock);
4701 ata_std_error_handler(ap);
4702 spin_lock_irq(scsi_cmd->device->host->host_lock);
4703
4704 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4705 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4706 rc = -EIO;
4707 break;
4708 }
4709 }
4710 } else
4711 rc = ipr_device_reset(ioa_cfg, res);
4712 res->resetting_device = 0;
4713
4714 LEAVE;
4715 return (rc ? FAILED : SUCCESS);
4716 }
4717
4718 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
4719 {
4720 int rc;
4721
4722 spin_lock_irq(cmd->device->host->host_lock);
4723 rc = __ipr_eh_dev_reset(cmd);
4724 spin_unlock_irq(cmd->device->host->host_lock);
4725
4726 return rc;
4727 }
4728
4729 /**
4730 * ipr_bus_reset_done - Op done function for bus reset.
4731 * @ipr_cmd: ipr command struct
4732 *
4733 * This function is the op done function for a bus reset
4734 *
4735 * Return value:
4736 * none
4737 **/
4738 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
4739 {
4740 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4741 struct ipr_resource_entry *res;
4742
4743 ENTER;
4744 if (!ioa_cfg->sis64)
4745 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4746 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
4747 scsi_report_bus_reset(ioa_cfg->host, res->bus);
4748 break;
4749 }
4750 }
4751
4752 /*
4753 * If abort has not completed, indicate the reset has, else call the
4754 * abort's done function to wake the sleeping eh thread
4755 */
4756 if (ipr_cmd->sibling->sibling)
4757 ipr_cmd->sibling->sibling = NULL;
4758 else
4759 ipr_cmd->sibling->done(ipr_cmd->sibling);
4760
4761 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4762 LEAVE;
4763 }
4764
4765 /**
4766 * ipr_abort_timeout - An abort task has timed out
4767 * @ipr_cmd: ipr command struct
4768 *
4769 * This function handles when an abort task times out. If this
4770 * happens we issue a bus reset since we have resources tied
4771 * up that must be freed before returning to the midlayer.
4772 *
4773 * Return value:
4774 * none
4775 **/
4776 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4777 {
4778 struct ipr_cmnd *reset_cmd;
4779 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4780 struct ipr_cmd_pkt *cmd_pkt;
4781 unsigned long lock_flags = 0;
4782
4783 ENTER;
4784 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4785 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4786 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4787 return;
4788 }
4789
4790 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4791 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4792 ipr_cmd->sibling = reset_cmd;
4793 reset_cmd->sibling = ipr_cmd;
4794 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4795 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4796 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4797 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4798 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4799
4800 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4801 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4802 LEAVE;
4803 }
4804
4805 /**
4806 * ipr_cancel_op - Cancel specified op
4807 * @scsi_cmd: scsi command struct
4808 *
4809 * This function cancels specified op.
4810 *
4811 * Return value:
4812 * SUCCESS / FAILED
4813 **/
4814 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4815 {
4816 struct ipr_cmnd *ipr_cmd;
4817 struct ipr_ioa_cfg *ioa_cfg;
4818 struct ipr_resource_entry *res;
4819 struct ipr_cmd_pkt *cmd_pkt;
4820 u32 ioasc;
4821 int op_found = 0;
4822
4823 ENTER;
4824 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4825 res = scsi_cmd->device->hostdata;
4826
4827 /* If we are currently going through reset/reload, return failed.
4828 * This will force the mid-layer to call ipr_eh_host_reset,
4829 * which will then go to sleep and wait for the reset to complete
4830 */
4831 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4832 return FAILED;
4833 if (!res || !ipr_is_gscsi(res))
4834 return FAILED;
4835
4836 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4837 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4838 ipr_cmd->done = ipr_scsi_eh_done;
4839 op_found = 1;
4840 break;
4841 }
4842 }
4843
4844 if (!op_found)
4845 return SUCCESS;
4846
4847 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4848 ipr_cmd->ioarcb.res_handle = res->res_handle;
4849 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4850 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4851 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4852 ipr_cmd->u.sdev = scsi_cmd->device;
4853
4854 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4855 scsi_cmd->cmnd[0]);
4856 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4857 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4858
4859 /*
4860 * If the abort task timed out and we sent a bus reset, we will get
4861 * one the following responses to the abort
4862 */
4863 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4864 ioasc = 0;
4865 ipr_trace;
4866 }
4867
4868 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4869 if (!ipr_is_naca_model(res))
4870 res->needs_sync_complete = 1;
4871
4872 LEAVE;
4873 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4874 }
4875
4876 /**
4877 * ipr_eh_abort - Abort a single op
4878 * @scsi_cmd: scsi command struct
4879 *
4880 * Return value:
4881 * SUCCESS / FAILED
4882 **/
4883 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4884 {
4885 unsigned long flags;
4886 int rc;
4887
4888 ENTER;
4889
4890 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4891 rc = ipr_cancel_op(scsi_cmd);
4892 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4893
4894 LEAVE;
4895 return rc;
4896 }
4897
4898 /**
4899 * ipr_handle_other_interrupt - Handle "other" interrupts
4900 * @ioa_cfg: ioa config struct
4901 *
4902 * Return value:
4903 * IRQ_NONE / IRQ_HANDLED
4904 **/
4905 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg)
4906 {
4907 irqreturn_t rc = IRQ_HANDLED;
4908 volatile u32 int_reg, int_mask_reg;
4909
4910 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
4911 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32) & ~int_mask_reg;
4912
4913 /* If an interrupt on the adapter did not occur, ignore it.
4914 * Or in the case of SIS 64, check for a stage change interrupt.
4915 */
4916 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
4917 if (ioa_cfg->sis64) {
4918 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4919 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4920 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
4921
4922 /* clear stage change */
4923 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
4924 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4925 list_del(&ioa_cfg->reset_cmd->queue);
4926 del_timer(&ioa_cfg->reset_cmd->timer);
4927 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4928 return IRQ_HANDLED;
4929 }
4930 }
4931
4932 return IRQ_NONE;
4933 }
4934
4935 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4936 /* Mask the interrupt */
4937 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4938
4939 /* Clear the interrupt */
4940 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4941 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4942
4943 list_del(&ioa_cfg->reset_cmd->queue);
4944 del_timer(&ioa_cfg->reset_cmd->timer);
4945 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4946 } else {
4947 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4948 ioa_cfg->ioa_unit_checked = 1;
4949 else
4950 dev_err(&ioa_cfg->pdev->dev,
4951 "Permanent IOA failure. 0x%08X\n", int_reg);
4952
4953 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4954 ioa_cfg->sdt_state = GET_DUMP;
4955
4956 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4957 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4958 }
4959
4960 return rc;
4961 }
4962
4963 /**
4964 * ipr_isr_eh - Interrupt service routine error handler
4965 * @ioa_cfg: ioa config struct
4966 * @msg: message to log
4967 *
4968 * Return value:
4969 * none
4970 **/
4971 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
4972 {
4973 ioa_cfg->errors_logged++;
4974 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
4975
4976 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4977 ioa_cfg->sdt_state = GET_DUMP;
4978
4979 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4980 }
4981
4982 /**
4983 * ipr_isr - Interrupt service routine
4984 * @irq: irq number
4985 * @devp: pointer to ioa config struct
4986 *
4987 * Return value:
4988 * IRQ_NONE / IRQ_HANDLED
4989 **/
4990 static irqreturn_t ipr_isr(int irq, void *devp)
4991 {
4992 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4993 unsigned long lock_flags = 0;
4994 volatile u32 int_reg;
4995 u32 ioasc;
4996 u16 cmd_index;
4997 int num_hrrq = 0;
4998 struct ipr_cmnd *ipr_cmd;
4999 irqreturn_t rc = IRQ_NONE;
5000
5001 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5002
5003 /* If interrupts are disabled, ignore the interrupt */
5004 if (!ioa_cfg->allow_interrupts) {
5005 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5006 return IRQ_NONE;
5007 }
5008
5009 while (1) {
5010 ipr_cmd = NULL;
5011
5012 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5013 ioa_cfg->toggle_bit) {
5014
5015 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
5016 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5017
5018 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
5019 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
5020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5021 return IRQ_HANDLED;
5022 }
5023
5024 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5025
5026 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5027
5028 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5029
5030 list_del(&ipr_cmd->queue);
5031 del_timer(&ipr_cmd->timer);
5032 ipr_cmd->done(ipr_cmd);
5033
5034 rc = IRQ_HANDLED;
5035
5036 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
5037 ioa_cfg->hrrq_curr++;
5038 } else {
5039 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5040 ioa_cfg->toggle_bit ^= 1u;
5041 }
5042 }
5043
5044 if (ipr_cmd != NULL) {
5045 /* Clear the PCI interrupt */
5046 do {
5047 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5048 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5049 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5050 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5051
5052 if (int_reg & IPR_PCII_HRRQ_UPDATED) {
5053 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
5054 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5055 return IRQ_HANDLED;
5056 }
5057
5058 } else
5059 break;
5060 }
5061
5062 if (unlikely(rc == IRQ_NONE))
5063 rc = ipr_handle_other_interrupt(ioa_cfg);
5064
5065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5066 return rc;
5067 }
5068
5069 /**
5070 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5071 * @ioa_cfg: ioa config struct
5072 * @ipr_cmd: ipr command struct
5073 *
5074 * Return value:
5075 * 0 on success / -1 on failure
5076 **/
5077 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5078 struct ipr_cmnd *ipr_cmd)
5079 {
5080 int i, nseg;
5081 struct scatterlist *sg;
5082 u32 length;
5083 u32 ioadl_flags = 0;
5084 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5085 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5086 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5087
5088 length = scsi_bufflen(scsi_cmd);
5089 if (!length)
5090 return 0;
5091
5092 nseg = scsi_dma_map(scsi_cmd);
5093 if (nseg < 0) {
5094 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5095 return -1;
5096 }
5097
5098 ipr_cmd->dma_use_sg = nseg;
5099
5100 ioarcb->data_transfer_length = cpu_to_be32(length);
5101 ioarcb->ioadl_len =
5102 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5103
5104 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5105 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5106 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5107 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5108 ioadl_flags = IPR_IOADL_FLAGS_READ;
5109
5110 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5111 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5112 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5113 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5114 }
5115
5116 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5117 return 0;
5118 }
5119
5120 /**
5121 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5122 * @ioa_cfg: ioa config struct
5123 * @ipr_cmd: ipr command struct
5124 *
5125 * Return value:
5126 * 0 on success / -1 on failure
5127 **/
5128 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5129 struct ipr_cmnd *ipr_cmd)
5130 {
5131 int i, nseg;
5132 struct scatterlist *sg;
5133 u32 length;
5134 u32 ioadl_flags = 0;
5135 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5136 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5137 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5138
5139 length = scsi_bufflen(scsi_cmd);
5140 if (!length)
5141 return 0;
5142
5143 nseg = scsi_dma_map(scsi_cmd);
5144 if (nseg < 0) {
5145 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5146 return -1;
5147 }
5148
5149 ipr_cmd->dma_use_sg = nseg;
5150
5151 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5152 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5153 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5154 ioarcb->data_transfer_length = cpu_to_be32(length);
5155 ioarcb->ioadl_len =
5156 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5157 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5158 ioadl_flags = IPR_IOADL_FLAGS_READ;
5159 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5160 ioarcb->read_ioadl_len =
5161 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5162 }
5163
5164 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5165 ioadl = ioarcb->u.add_data.u.ioadl;
5166 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5167 offsetof(struct ipr_ioarcb, u.add_data));
5168 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5169 }
5170
5171 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5172 ioadl[i].flags_and_data_len =
5173 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5174 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5175 }
5176
5177 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5178 return 0;
5179 }
5180
5181 /**
5182 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5183 * @scsi_cmd: scsi command struct
5184 *
5185 * Return value:
5186 * task attributes
5187 **/
5188 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5189 {
5190 u8 tag[2];
5191 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5192
5193 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5194 switch (tag[0]) {
5195 case MSG_SIMPLE_TAG:
5196 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5197 break;
5198 case MSG_HEAD_TAG:
5199 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5200 break;
5201 case MSG_ORDERED_TAG:
5202 rc = IPR_FLAGS_LO_ORDERED_TASK;
5203 break;
5204 };
5205 }
5206
5207 return rc;
5208 }
5209
5210 /**
5211 * ipr_erp_done - Process completion of ERP for a device
5212 * @ipr_cmd: ipr command struct
5213 *
5214 * This function copies the sense buffer into the scsi_cmd
5215 * struct and pushes the scsi_done function.
5216 *
5217 * Return value:
5218 * nothing
5219 **/
5220 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5221 {
5222 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5223 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5224 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5225 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5226
5227 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5228 scsi_cmd->result |= (DID_ERROR << 16);
5229 scmd_printk(KERN_ERR, scsi_cmd,
5230 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5231 } else {
5232 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5233 SCSI_SENSE_BUFFERSIZE);
5234 }
5235
5236 if (res) {
5237 if (!ipr_is_naca_model(res))
5238 res->needs_sync_complete = 1;
5239 res->in_erp = 0;
5240 }
5241 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5242 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5243 scsi_cmd->scsi_done(scsi_cmd);
5244 }
5245
5246 /**
5247 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5248 * @ipr_cmd: ipr command struct
5249 *
5250 * Return value:
5251 * none
5252 **/
5253 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5254 {
5255 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5256 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5257 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5258
5259 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5260 ioarcb->data_transfer_length = 0;
5261 ioarcb->read_data_transfer_length = 0;
5262 ioarcb->ioadl_len = 0;
5263 ioarcb->read_ioadl_len = 0;
5264 ioasa->hdr.ioasc = 0;
5265 ioasa->hdr.residual_data_len = 0;
5266
5267 if (ipr_cmd->ioa_cfg->sis64)
5268 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5269 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5270 else {
5271 ioarcb->write_ioadl_addr =
5272 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5273 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5274 }
5275 }
5276
5277 /**
5278 * ipr_erp_request_sense - Send request sense to a device
5279 * @ipr_cmd: ipr command struct
5280 *
5281 * This function sends a request sense to a device as a result
5282 * of a check condition.
5283 *
5284 * Return value:
5285 * nothing
5286 **/
5287 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5288 {
5289 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5290 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5291
5292 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5293 ipr_erp_done(ipr_cmd);
5294 return;
5295 }
5296
5297 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5298
5299 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5300 cmd_pkt->cdb[0] = REQUEST_SENSE;
5301 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5302 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5303 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5304 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5305
5306 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5307 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5308
5309 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5310 IPR_REQUEST_SENSE_TIMEOUT * 2);
5311 }
5312
5313 /**
5314 * ipr_erp_cancel_all - Send cancel all to a device
5315 * @ipr_cmd: ipr command struct
5316 *
5317 * This function sends a cancel all to a device to clear the
5318 * queue. If we are running TCQ on the device, QERR is set to 1,
5319 * which means all outstanding ops have been dropped on the floor.
5320 * Cancel all will return them to us.
5321 *
5322 * Return value:
5323 * nothing
5324 **/
5325 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5326 {
5327 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5328 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5329 struct ipr_cmd_pkt *cmd_pkt;
5330
5331 res->in_erp = 1;
5332
5333 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5334
5335 if (!scsi_get_tag_type(scsi_cmd->device)) {
5336 ipr_erp_request_sense(ipr_cmd);
5337 return;
5338 }
5339
5340 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5341 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5342 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5343
5344 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5345 IPR_CANCEL_ALL_TIMEOUT);
5346 }
5347
5348 /**
5349 * ipr_dump_ioasa - Dump contents of IOASA
5350 * @ioa_cfg: ioa config struct
5351 * @ipr_cmd: ipr command struct
5352 * @res: resource entry struct
5353 *
5354 * This function is invoked by the interrupt handler when ops
5355 * fail. It will log the IOASA if appropriate. Only called
5356 * for GPDD ops.
5357 *
5358 * Return value:
5359 * none
5360 **/
5361 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5362 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5363 {
5364 int i;
5365 u16 data_len;
5366 u32 ioasc, fd_ioasc;
5367 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5368 __be32 *ioasa_data = (__be32 *)ioasa;
5369 int error_index;
5370
5371 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5372 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5373
5374 if (0 == ioasc)
5375 return;
5376
5377 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5378 return;
5379
5380 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5381 error_index = ipr_get_error(fd_ioasc);
5382 else
5383 error_index = ipr_get_error(ioasc);
5384
5385 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5386 /* Don't log an error if the IOA already logged one */
5387 if (ioasa->hdr.ilid != 0)
5388 return;
5389
5390 if (!ipr_is_gscsi(res))
5391 return;
5392
5393 if (ipr_error_table[error_index].log_ioasa == 0)
5394 return;
5395 }
5396
5397 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5398
5399 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5400 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5401 data_len = sizeof(struct ipr_ioasa64);
5402 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
5403 data_len = sizeof(struct ipr_ioasa);
5404
5405 ipr_err("IOASA Dump:\n");
5406
5407 for (i = 0; i < data_len / 4; i += 4) {
5408 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5409 be32_to_cpu(ioasa_data[i]),
5410 be32_to_cpu(ioasa_data[i+1]),
5411 be32_to_cpu(ioasa_data[i+2]),
5412 be32_to_cpu(ioasa_data[i+3]));
5413 }
5414 }
5415
5416 /**
5417 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5418 * @ioasa: IOASA
5419 * @sense_buf: sense data buffer
5420 *
5421 * Return value:
5422 * none
5423 **/
5424 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5425 {
5426 u32 failing_lba;
5427 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5428 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5429 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5430 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
5431
5432 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5433
5434 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5435 return;
5436
5437 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5438
5439 if (ipr_is_vset_device(res) &&
5440 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5441 ioasa->u.vset.failing_lba_hi != 0) {
5442 sense_buf[0] = 0x72;
5443 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5444 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5445 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5446
5447 sense_buf[7] = 12;
5448 sense_buf[8] = 0;
5449 sense_buf[9] = 0x0A;
5450 sense_buf[10] = 0x80;
5451
5452 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5453
5454 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5455 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5456 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5457 sense_buf[15] = failing_lba & 0x000000ff;
5458
5459 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5460
5461 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5462 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5463 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5464 sense_buf[19] = failing_lba & 0x000000ff;
5465 } else {
5466 sense_buf[0] = 0x70;
5467 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5468 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5469 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5470
5471 /* Illegal request */
5472 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
5473 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
5474 sense_buf[7] = 10; /* additional length */
5475
5476 /* IOARCB was in error */
5477 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5478 sense_buf[15] = 0xC0;
5479 else /* Parameter data was invalid */
5480 sense_buf[15] = 0x80;
5481
5482 sense_buf[16] =
5483 ((IPR_FIELD_POINTER_MASK &
5484 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
5485 sense_buf[17] =
5486 (IPR_FIELD_POINTER_MASK &
5487 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
5488 } else {
5489 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5490 if (ipr_is_vset_device(res))
5491 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5492 else
5493 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5494
5495 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5496 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5497 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5498 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5499 sense_buf[6] = failing_lba & 0x000000ff;
5500 }
5501
5502 sense_buf[7] = 6; /* additional length */
5503 }
5504 }
5505 }
5506
5507 /**
5508 * ipr_get_autosense - Copy autosense data to sense buffer
5509 * @ipr_cmd: ipr command struct
5510 *
5511 * This function copies the autosense buffer to the buffer
5512 * in the scsi_cmd, if there is autosense available.
5513 *
5514 * Return value:
5515 * 1 if autosense was available / 0 if not
5516 **/
5517 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5518 {
5519 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5520 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
5521
5522 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
5523 return 0;
5524
5525 if (ipr_cmd->ioa_cfg->sis64)
5526 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
5527 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
5528 SCSI_SENSE_BUFFERSIZE));
5529 else
5530 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5531 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5532 SCSI_SENSE_BUFFERSIZE));
5533 return 1;
5534 }
5535
5536 /**
5537 * ipr_erp_start - Process an error response for a SCSI op
5538 * @ioa_cfg: ioa config struct
5539 * @ipr_cmd: ipr command struct
5540 *
5541 * This function determines whether or not to initiate ERP
5542 * on the affected device.
5543 *
5544 * Return value:
5545 * nothing
5546 **/
5547 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5548 struct ipr_cmnd *ipr_cmd)
5549 {
5550 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5551 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5552 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5553 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
5554
5555 if (!res) {
5556 ipr_scsi_eh_done(ipr_cmd);
5557 return;
5558 }
5559
5560 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
5561 ipr_gen_sense(ipr_cmd);
5562
5563 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5564
5565 switch (masked_ioasc) {
5566 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
5567 if (ipr_is_naca_model(res))
5568 scsi_cmd->result |= (DID_ABORT << 16);
5569 else
5570 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5571 break;
5572 case IPR_IOASC_IR_RESOURCE_HANDLE:
5573 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
5574 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5575 break;
5576 case IPR_IOASC_HW_SEL_TIMEOUT:
5577 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5578 if (!ipr_is_naca_model(res))
5579 res->needs_sync_complete = 1;
5580 break;
5581 case IPR_IOASC_SYNC_REQUIRED:
5582 if (!res->in_erp)
5583 res->needs_sync_complete = 1;
5584 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5585 break;
5586 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
5587 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
5588 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5589 break;
5590 case IPR_IOASC_BUS_WAS_RESET:
5591 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5592 /*
5593 * Report the bus reset and ask for a retry. The device
5594 * will give CC/UA the next command.
5595 */
5596 if (!res->resetting_device)
5597 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
5598 scsi_cmd->result |= (DID_ERROR << 16);
5599 if (!ipr_is_naca_model(res))
5600 res->needs_sync_complete = 1;
5601 break;
5602 case IPR_IOASC_HW_DEV_BUS_STATUS:
5603 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
5604 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
5605 if (!ipr_get_autosense(ipr_cmd)) {
5606 if (!ipr_is_naca_model(res)) {
5607 ipr_erp_cancel_all(ipr_cmd);
5608 return;
5609 }
5610 }
5611 }
5612 if (!ipr_is_naca_model(res))
5613 res->needs_sync_complete = 1;
5614 break;
5615 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
5616 break;
5617 default:
5618 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5619 scsi_cmd->result |= (DID_ERROR << 16);
5620 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
5621 res->needs_sync_complete = 1;
5622 break;
5623 }
5624
5625 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5626 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5627 scsi_cmd->scsi_done(scsi_cmd);
5628 }
5629
5630 /**
5631 * ipr_scsi_done - mid-layer done function
5632 * @ipr_cmd: ipr command struct
5633 *
5634 * This function is invoked by the interrupt handler for
5635 * ops generated by the SCSI mid-layer
5636 *
5637 * Return value:
5638 * none
5639 **/
5640 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
5641 {
5642 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5643 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5644 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5645
5646 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
5647
5648 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
5649 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5650 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5651 scsi_cmd->scsi_done(scsi_cmd);
5652 } else
5653 ipr_erp_start(ioa_cfg, ipr_cmd);
5654 }
5655
5656 /**
5657 * ipr_queuecommand - Queue a mid-layer request
5658 * @scsi_cmd: scsi command struct
5659 * @done: done function
5660 *
5661 * This function queues a request generated by the mid-layer.
5662 *
5663 * Return value:
5664 * 0 on success
5665 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
5666 * SCSI_MLQUEUE_HOST_BUSY if host is busy
5667 **/
5668 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
5669 void (*done) (struct scsi_cmnd *))
5670 {
5671 struct ipr_ioa_cfg *ioa_cfg;
5672 struct ipr_resource_entry *res;
5673 struct ipr_ioarcb *ioarcb;
5674 struct ipr_cmnd *ipr_cmd;
5675 int rc = 0;
5676
5677 scsi_cmd->scsi_done = done;
5678 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5679 res = scsi_cmd->device->hostdata;
5680 scsi_cmd->result = (DID_OK << 16);
5681
5682 /*
5683 * We are currently blocking all devices due to a host reset
5684 * We have told the host to stop giving us new requests, but
5685 * ERP ops don't count. FIXME
5686 */
5687 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
5688 return SCSI_MLQUEUE_HOST_BUSY;
5689
5690 /*
5691 * FIXME - Create scsi_set_host_offline interface
5692 * and the ioa_is_dead check can be removed
5693 */
5694 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
5695 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
5696 scsi_cmd->result = (DID_NO_CONNECT << 16);
5697 scsi_cmd->scsi_done(scsi_cmd);
5698 return 0;
5699 }
5700
5701 if (ipr_is_gata(res) && res->sata_port)
5702 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
5703
5704 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5705 ioarcb = &ipr_cmd->ioarcb;
5706 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5707
5708 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
5709 ipr_cmd->scsi_cmd = scsi_cmd;
5710 ioarcb->res_handle = res->res_handle;
5711 ipr_cmd->done = ipr_scsi_done;
5712 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
5713
5714 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
5715 if (scsi_cmd->underflow == 0)
5716 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5717
5718 if (res->needs_sync_complete) {
5719 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
5720 res->needs_sync_complete = 0;
5721 }
5722
5723 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5724 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
5725 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
5726 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
5727 }
5728
5729 if (scsi_cmd->cmnd[0] >= 0xC0 &&
5730 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
5731 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5732
5733 if (likely(rc == 0)) {
5734 if (ioa_cfg->sis64)
5735 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
5736 else
5737 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
5738 }
5739
5740 if (likely(rc == 0)) {
5741 mb();
5742 ipr_send_command(ipr_cmd);
5743 } else {
5744 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5745 return SCSI_MLQUEUE_HOST_BUSY;
5746 }
5747
5748 return 0;
5749 }
5750
5751 /**
5752 * ipr_ioctl - IOCTL handler
5753 * @sdev: scsi device struct
5754 * @cmd: IOCTL cmd
5755 * @arg: IOCTL arg
5756 *
5757 * Return value:
5758 * 0 on success / other on failure
5759 **/
5760 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5761 {
5762 struct ipr_resource_entry *res;
5763
5764 res = (struct ipr_resource_entry *)sdev->hostdata;
5765 if (res && ipr_is_gata(res)) {
5766 if (cmd == HDIO_GET_IDENTITY)
5767 return -ENOTTY;
5768 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
5769 }
5770
5771 return -EINVAL;
5772 }
5773
5774 /**
5775 * ipr_info - Get information about the card/driver
5776 * @scsi_host: scsi host struct
5777 *
5778 * Return value:
5779 * pointer to buffer with description string
5780 **/
5781 static const char * ipr_ioa_info(struct Scsi_Host *host)
5782 {
5783 static char buffer[512];
5784 struct ipr_ioa_cfg *ioa_cfg;
5785 unsigned long lock_flags = 0;
5786
5787 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
5788
5789 spin_lock_irqsave(host->host_lock, lock_flags);
5790 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
5791 spin_unlock_irqrestore(host->host_lock, lock_flags);
5792
5793 return buffer;
5794 }
5795
5796 static struct scsi_host_template driver_template = {
5797 .module = THIS_MODULE,
5798 .name = "IPR",
5799 .info = ipr_ioa_info,
5800 .ioctl = ipr_ioctl,
5801 .queuecommand = ipr_queuecommand,
5802 .eh_abort_handler = ipr_eh_abort,
5803 .eh_device_reset_handler = ipr_eh_dev_reset,
5804 .eh_host_reset_handler = ipr_eh_host_reset,
5805 .slave_alloc = ipr_slave_alloc,
5806 .slave_configure = ipr_slave_configure,
5807 .slave_destroy = ipr_slave_destroy,
5808 .target_alloc = ipr_target_alloc,
5809 .target_destroy = ipr_target_destroy,
5810 .change_queue_depth = ipr_change_queue_depth,
5811 .change_queue_type = ipr_change_queue_type,
5812 .bios_param = ipr_biosparam,
5813 .can_queue = IPR_MAX_COMMANDS,
5814 .this_id = -1,
5815 .sg_tablesize = IPR_MAX_SGLIST,
5816 .max_sectors = IPR_IOA_MAX_SECTORS,
5817 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5818 .use_clustering = ENABLE_CLUSTERING,
5819 .shost_attrs = ipr_ioa_attrs,
5820 .sdev_attrs = ipr_dev_attrs,
5821 .proc_name = IPR_NAME
5822 };
5823
5824 /**
5825 * ipr_ata_phy_reset - libata phy_reset handler
5826 * @ap: ata port to reset
5827 *
5828 **/
5829 static void ipr_ata_phy_reset(struct ata_port *ap)
5830 {
5831 unsigned long flags;
5832 struct ipr_sata_port *sata_port = ap->private_data;
5833 struct ipr_resource_entry *res = sata_port->res;
5834 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5835 int rc;
5836
5837 ENTER;
5838 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5839 while(ioa_cfg->in_reset_reload) {
5840 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5841 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5842 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5843 }
5844
5845 if (!ioa_cfg->allow_cmds)
5846 goto out_unlock;
5847
5848 rc = ipr_device_reset(ioa_cfg, res);
5849
5850 if (rc) {
5851 ap->link.device[0].class = ATA_DEV_NONE;
5852 goto out_unlock;
5853 }
5854
5855 ap->link.device[0].class = res->ata_class;
5856 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
5857 ap->link.device[0].class = ATA_DEV_NONE;
5858
5859 out_unlock:
5860 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5861 LEAVE;
5862 }
5863
5864 /**
5865 * ipr_ata_post_internal - Cleanup after an internal command
5866 * @qc: ATA queued command
5867 *
5868 * Return value:
5869 * none
5870 **/
5871 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5872 {
5873 struct ipr_sata_port *sata_port = qc->ap->private_data;
5874 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5875 struct ipr_cmnd *ipr_cmd;
5876 unsigned long flags;
5877
5878 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5879 while(ioa_cfg->in_reset_reload) {
5880 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5881 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5882 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5883 }
5884
5885 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5886 if (ipr_cmd->qc == qc) {
5887 ipr_device_reset(ioa_cfg, sata_port->res);
5888 break;
5889 }
5890 }
5891 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5892 }
5893
5894 /**
5895 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5896 * @regs: destination
5897 * @tf: source ATA taskfile
5898 *
5899 * Return value:
5900 * none
5901 **/
5902 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5903 struct ata_taskfile *tf)
5904 {
5905 regs->feature = tf->feature;
5906 regs->nsect = tf->nsect;
5907 regs->lbal = tf->lbal;
5908 regs->lbam = tf->lbam;
5909 regs->lbah = tf->lbah;
5910 regs->device = tf->device;
5911 regs->command = tf->command;
5912 regs->hob_feature = tf->hob_feature;
5913 regs->hob_nsect = tf->hob_nsect;
5914 regs->hob_lbal = tf->hob_lbal;
5915 regs->hob_lbam = tf->hob_lbam;
5916 regs->hob_lbah = tf->hob_lbah;
5917 regs->ctl = tf->ctl;
5918 }
5919
5920 /**
5921 * ipr_sata_done - done function for SATA commands
5922 * @ipr_cmd: ipr command struct
5923 *
5924 * This function is invoked by the interrupt handler for
5925 * ops generated by the SCSI mid-layer to SATA devices
5926 *
5927 * Return value:
5928 * none
5929 **/
5930 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5931 {
5932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5933 struct ata_queued_cmd *qc = ipr_cmd->qc;
5934 struct ipr_sata_port *sata_port = qc->ap->private_data;
5935 struct ipr_resource_entry *res = sata_port->res;
5936 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5937
5938 if (ipr_cmd->ioa_cfg->sis64)
5939 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5940 sizeof(struct ipr_ioasa_gata));
5941 else
5942 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5943 sizeof(struct ipr_ioasa_gata));
5944 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5945
5946 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5947 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
5948
5949 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5950 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
5951 else
5952 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
5953 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5954 ata_qc_complete(qc);
5955 }
5956
5957 /**
5958 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
5959 * @ipr_cmd: ipr command struct
5960 * @qc: ATA queued command
5961 *
5962 **/
5963 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
5964 struct ata_queued_cmd *qc)
5965 {
5966 u32 ioadl_flags = 0;
5967 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5968 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5969 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
5970 int len = qc->nbytes;
5971 struct scatterlist *sg;
5972 unsigned int si;
5973 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5974
5975 if (len == 0)
5976 return;
5977
5978 if (qc->dma_dir == DMA_TO_DEVICE) {
5979 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5980 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5981 } else if (qc->dma_dir == DMA_FROM_DEVICE)
5982 ioadl_flags = IPR_IOADL_FLAGS_READ;
5983
5984 ioarcb->data_transfer_length = cpu_to_be32(len);
5985 ioarcb->ioadl_len =
5986 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5987 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5988 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
5989
5990 for_each_sg(qc->sg, sg, qc->n_elem, si) {
5991 ioadl64->flags = cpu_to_be32(ioadl_flags);
5992 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
5993 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
5994
5995 last_ioadl64 = ioadl64;
5996 ioadl64++;
5997 }
5998
5999 if (likely(last_ioadl64))
6000 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6001 }
6002
6003 /**
6004 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6005 * @ipr_cmd: ipr command struct
6006 * @qc: ATA queued command
6007 *
6008 **/
6009 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6010 struct ata_queued_cmd *qc)
6011 {
6012 u32 ioadl_flags = 0;
6013 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6014 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6015 struct ipr_ioadl_desc *last_ioadl = NULL;
6016 int len = qc->nbytes;
6017 struct scatterlist *sg;
6018 unsigned int si;
6019
6020 if (len == 0)
6021 return;
6022
6023 if (qc->dma_dir == DMA_TO_DEVICE) {
6024 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6025 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6026 ioarcb->data_transfer_length = cpu_to_be32(len);
6027 ioarcb->ioadl_len =
6028 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6029 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6030 ioadl_flags = IPR_IOADL_FLAGS_READ;
6031 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6032 ioarcb->read_ioadl_len =
6033 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6034 }
6035
6036 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6037 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6038 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6039
6040 last_ioadl = ioadl;
6041 ioadl++;
6042 }
6043
6044 if (likely(last_ioadl))
6045 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6046 }
6047
6048 /**
6049 * ipr_qc_issue - Issue a SATA qc to a device
6050 * @qc: queued command
6051 *
6052 * Return value:
6053 * 0 if success
6054 **/
6055 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6056 {
6057 struct ata_port *ap = qc->ap;
6058 struct ipr_sata_port *sata_port = ap->private_data;
6059 struct ipr_resource_entry *res = sata_port->res;
6060 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6061 struct ipr_cmnd *ipr_cmd;
6062 struct ipr_ioarcb *ioarcb;
6063 struct ipr_ioarcb_ata_regs *regs;
6064
6065 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
6066 return AC_ERR_SYSTEM;
6067
6068 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6069 ioarcb = &ipr_cmd->ioarcb;
6070
6071 if (ioa_cfg->sis64) {
6072 regs = &ipr_cmd->i.ata_ioadl.regs;
6073 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6074 } else
6075 regs = &ioarcb->u.add_data.u.regs;
6076
6077 memset(regs, 0, sizeof(*regs));
6078 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6079
6080 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6081 ipr_cmd->qc = qc;
6082 ipr_cmd->done = ipr_sata_done;
6083 ipr_cmd->ioarcb.res_handle = res->res_handle;
6084 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6085 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6086 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6087 ipr_cmd->dma_use_sg = qc->n_elem;
6088
6089 if (ioa_cfg->sis64)
6090 ipr_build_ata_ioadl64(ipr_cmd, qc);
6091 else
6092 ipr_build_ata_ioadl(ipr_cmd, qc);
6093
6094 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6095 ipr_copy_sata_tf(regs, &qc->tf);
6096 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6097 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6098
6099 switch (qc->tf.protocol) {
6100 case ATA_PROT_NODATA:
6101 case ATA_PROT_PIO:
6102 break;
6103
6104 case ATA_PROT_DMA:
6105 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6106 break;
6107
6108 case ATAPI_PROT_PIO:
6109 case ATAPI_PROT_NODATA:
6110 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6111 break;
6112
6113 case ATAPI_PROT_DMA:
6114 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6115 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6116 break;
6117
6118 default:
6119 WARN_ON(1);
6120 return AC_ERR_INVALID;
6121 }
6122
6123 mb();
6124
6125 ipr_send_command(ipr_cmd);
6126
6127 return 0;
6128 }
6129
6130 /**
6131 * ipr_qc_fill_rtf - Read result TF
6132 * @qc: ATA queued command
6133 *
6134 * Return value:
6135 * true
6136 **/
6137 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6138 {
6139 struct ipr_sata_port *sata_port = qc->ap->private_data;
6140 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6141 struct ata_taskfile *tf = &qc->result_tf;
6142
6143 tf->feature = g->error;
6144 tf->nsect = g->nsect;
6145 tf->lbal = g->lbal;
6146 tf->lbam = g->lbam;
6147 tf->lbah = g->lbah;
6148 tf->device = g->device;
6149 tf->command = g->status;
6150 tf->hob_nsect = g->hob_nsect;
6151 tf->hob_lbal = g->hob_lbal;
6152 tf->hob_lbam = g->hob_lbam;
6153 tf->hob_lbah = g->hob_lbah;
6154 tf->ctl = g->alt_status;
6155
6156 return true;
6157 }
6158
6159 static struct ata_port_operations ipr_sata_ops = {
6160 .phy_reset = ipr_ata_phy_reset,
6161 .hardreset = ipr_sata_reset,
6162 .post_internal_cmd = ipr_ata_post_internal,
6163 .qc_prep = ata_noop_qc_prep,
6164 .qc_issue = ipr_qc_issue,
6165 .qc_fill_rtf = ipr_qc_fill_rtf,
6166 .port_start = ata_sas_port_start,
6167 .port_stop = ata_sas_port_stop
6168 };
6169
6170 static struct ata_port_info sata_port_info = {
6171 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
6172 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
6173 .pio_mask = 0x10, /* pio4 */
6174 .mwdma_mask = 0x07,
6175 .udma_mask = 0x7f, /* udma0-6 */
6176 .port_ops = &ipr_sata_ops
6177 };
6178
6179 #ifdef CONFIG_PPC_PSERIES
6180 static const u16 ipr_blocked_processors[] = {
6181 PV_NORTHSTAR,
6182 PV_PULSAR,
6183 PV_POWER4,
6184 PV_ICESTAR,
6185 PV_SSTAR,
6186 PV_POWER4p,
6187 PV_630,
6188 PV_630p
6189 };
6190
6191 /**
6192 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6193 * @ioa_cfg: ioa cfg struct
6194 *
6195 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6196 * certain pSeries hardware. This function determines if the given
6197 * adapter is in one of these confgurations or not.
6198 *
6199 * Return value:
6200 * 1 if adapter is not supported / 0 if adapter is supported
6201 **/
6202 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6203 {
6204 int i;
6205
6206 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6207 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
6208 if (__is_processor(ipr_blocked_processors[i]))
6209 return 1;
6210 }
6211 }
6212 return 0;
6213 }
6214 #else
6215 #define ipr_invalid_adapter(ioa_cfg) 0
6216 #endif
6217
6218 /**
6219 * ipr_ioa_bringdown_done - IOA bring down completion.
6220 * @ipr_cmd: ipr command struct
6221 *
6222 * This function processes the completion of an adapter bring down.
6223 * It wakes any reset sleepers.
6224 *
6225 * Return value:
6226 * IPR_RC_JOB_RETURN
6227 **/
6228 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6229 {
6230 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6231
6232 ENTER;
6233 ioa_cfg->in_reset_reload = 0;
6234 ioa_cfg->reset_retries = 0;
6235 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6236 wake_up_all(&ioa_cfg->reset_wait_q);
6237
6238 spin_unlock_irq(ioa_cfg->host->host_lock);
6239 scsi_unblock_requests(ioa_cfg->host);
6240 spin_lock_irq(ioa_cfg->host->host_lock);
6241 LEAVE;
6242
6243 return IPR_RC_JOB_RETURN;
6244 }
6245
6246 /**
6247 * ipr_ioa_reset_done - IOA reset completion.
6248 * @ipr_cmd: ipr command struct
6249 *
6250 * This function processes the completion of an adapter reset.
6251 * It schedules any necessary mid-layer add/removes and
6252 * wakes any reset sleepers.
6253 *
6254 * Return value:
6255 * IPR_RC_JOB_RETURN
6256 **/
6257 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6258 {
6259 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6260 struct ipr_resource_entry *res;
6261 struct ipr_hostrcb *hostrcb, *temp;
6262 int i = 0;
6263
6264 ENTER;
6265 ioa_cfg->in_reset_reload = 0;
6266 ioa_cfg->allow_cmds = 1;
6267 ioa_cfg->reset_cmd = NULL;
6268 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6269
6270 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6271 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6272 ipr_trace;
6273 break;
6274 }
6275 }
6276 schedule_work(&ioa_cfg->work_q);
6277
6278 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6279 list_del(&hostrcb->queue);
6280 if (i++ < IPR_NUM_LOG_HCAMS)
6281 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6282 else
6283 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6284 }
6285
6286 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6287 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6288
6289 ioa_cfg->reset_retries = 0;
6290 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6291 wake_up_all(&ioa_cfg->reset_wait_q);
6292
6293 spin_unlock(ioa_cfg->host->host_lock);
6294 scsi_unblock_requests(ioa_cfg->host);
6295 spin_lock(ioa_cfg->host->host_lock);
6296
6297 if (!ioa_cfg->allow_cmds)
6298 scsi_block_requests(ioa_cfg->host);
6299
6300 LEAVE;
6301 return IPR_RC_JOB_RETURN;
6302 }
6303
6304 /**
6305 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6306 * @supported_dev: supported device struct
6307 * @vpids: vendor product id struct
6308 *
6309 * Return value:
6310 * none
6311 **/
6312 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6313 struct ipr_std_inq_vpids *vpids)
6314 {
6315 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6316 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6317 supported_dev->num_records = 1;
6318 supported_dev->data_length =
6319 cpu_to_be16(sizeof(struct ipr_supported_device));
6320 supported_dev->reserved = 0;
6321 }
6322
6323 /**
6324 * ipr_set_supported_devs - Send Set Supported Devices for a device
6325 * @ipr_cmd: ipr command struct
6326 *
6327 * This function sends a Set Supported Devices to the adapter
6328 *
6329 * Return value:
6330 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6331 **/
6332 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6333 {
6334 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6335 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6336 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6337 struct ipr_resource_entry *res = ipr_cmd->u.res;
6338
6339 ipr_cmd->job_step = ipr_ioa_reset_done;
6340
6341 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6342 if (!ipr_is_scsi_disk(res))
6343 continue;
6344
6345 ipr_cmd->u.res = res;
6346 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6347
6348 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6349 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6350 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6351
6352 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6353 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6354 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6355 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6356
6357 ipr_init_ioadl(ipr_cmd,
6358 ioa_cfg->vpd_cbs_dma +
6359 offsetof(struct ipr_misc_cbs, supp_dev),
6360 sizeof(struct ipr_supported_device),
6361 IPR_IOADL_FLAGS_WRITE_LAST);
6362
6363 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6364 IPR_SET_SUP_DEVICE_TIMEOUT);
6365
6366 if (!ioa_cfg->sis64)
6367 ipr_cmd->job_step = ipr_set_supported_devs;
6368 return IPR_RC_JOB_RETURN;
6369 }
6370
6371 return IPR_RC_JOB_CONTINUE;
6372 }
6373
6374 /**
6375 * ipr_get_mode_page - Locate specified mode page
6376 * @mode_pages: mode page buffer
6377 * @page_code: page code to find
6378 * @len: minimum required length for mode page
6379 *
6380 * Return value:
6381 * pointer to mode page / NULL on failure
6382 **/
6383 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6384 u32 page_code, u32 len)
6385 {
6386 struct ipr_mode_page_hdr *mode_hdr;
6387 u32 page_length;
6388 u32 length;
6389
6390 if (!mode_pages || (mode_pages->hdr.length == 0))
6391 return NULL;
6392
6393 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6394 mode_hdr = (struct ipr_mode_page_hdr *)
6395 (mode_pages->data + mode_pages->hdr.block_desc_len);
6396
6397 while (length) {
6398 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6399 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6400 return mode_hdr;
6401 break;
6402 } else {
6403 page_length = (sizeof(struct ipr_mode_page_hdr) +
6404 mode_hdr->page_length);
6405 length -= page_length;
6406 mode_hdr = (struct ipr_mode_page_hdr *)
6407 ((unsigned long)mode_hdr + page_length);
6408 }
6409 }
6410 return NULL;
6411 }
6412
6413 /**
6414 * ipr_check_term_power - Check for term power errors
6415 * @ioa_cfg: ioa config struct
6416 * @mode_pages: IOAFP mode pages buffer
6417 *
6418 * Check the IOAFP's mode page 28 for term power errors
6419 *
6420 * Return value:
6421 * nothing
6422 **/
6423 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6424 struct ipr_mode_pages *mode_pages)
6425 {
6426 int i;
6427 int entry_length;
6428 struct ipr_dev_bus_entry *bus;
6429 struct ipr_mode_page28 *mode_page;
6430
6431 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6432 sizeof(struct ipr_mode_page28));
6433
6434 entry_length = mode_page->entry_length;
6435
6436 bus = mode_page->bus;
6437
6438 for (i = 0; i < mode_page->num_entries; i++) {
6439 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6440 dev_err(&ioa_cfg->pdev->dev,
6441 "Term power is absent on scsi bus %d\n",
6442 bus->res_addr.bus);
6443 }
6444
6445 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6446 }
6447 }
6448
6449 /**
6450 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6451 * @ioa_cfg: ioa config struct
6452 *
6453 * Looks through the config table checking for SES devices. If
6454 * the SES device is in the SES table indicating a maximum SCSI
6455 * bus speed, the speed is limited for the bus.
6456 *
6457 * Return value:
6458 * none
6459 **/
6460 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6461 {
6462 u32 max_xfer_rate;
6463 int i;
6464
6465 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6466 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6467 ioa_cfg->bus_attr[i].bus_width);
6468
6469 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6470 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6471 }
6472 }
6473
6474 /**
6475 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6476 * @ioa_cfg: ioa config struct
6477 * @mode_pages: mode page 28 buffer
6478 *
6479 * Updates mode page 28 based on driver configuration
6480 *
6481 * Return value:
6482 * none
6483 **/
6484 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
6485 struct ipr_mode_pages *mode_pages)
6486 {
6487 int i, entry_length;
6488 struct ipr_dev_bus_entry *bus;
6489 struct ipr_bus_attributes *bus_attr;
6490 struct ipr_mode_page28 *mode_page;
6491
6492 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6493 sizeof(struct ipr_mode_page28));
6494
6495 entry_length = mode_page->entry_length;
6496
6497 /* Loop for each device bus entry */
6498 for (i = 0, bus = mode_page->bus;
6499 i < mode_page->num_entries;
6500 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
6501 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
6502 dev_err(&ioa_cfg->pdev->dev,
6503 "Invalid resource address reported: 0x%08X\n",
6504 IPR_GET_PHYS_LOC(bus->res_addr));
6505 continue;
6506 }
6507
6508 bus_attr = &ioa_cfg->bus_attr[i];
6509 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
6510 bus->bus_width = bus_attr->bus_width;
6511 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
6512 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
6513 if (bus_attr->qas_enabled)
6514 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
6515 else
6516 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
6517 }
6518 }
6519
6520 /**
6521 * ipr_build_mode_select - Build a mode select command
6522 * @ipr_cmd: ipr command struct
6523 * @res_handle: resource handle to send command to
6524 * @parm: Byte 2 of Mode Sense command
6525 * @dma_addr: DMA buffer address
6526 * @xfer_len: data transfer length
6527 *
6528 * Return value:
6529 * none
6530 **/
6531 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
6532 __be32 res_handle, u8 parm,
6533 dma_addr_t dma_addr, u8 xfer_len)
6534 {
6535 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6536
6537 ioarcb->res_handle = res_handle;
6538 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6539 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6540 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
6541 ioarcb->cmd_pkt.cdb[1] = parm;
6542 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6543
6544 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
6545 }
6546
6547 /**
6548 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
6549 * @ipr_cmd: ipr command struct
6550 *
6551 * This function sets up the SCSI bus attributes and sends
6552 * a Mode Select for Page 28 to activate them.
6553 *
6554 * Return value:
6555 * IPR_RC_JOB_RETURN
6556 **/
6557 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
6558 {
6559 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6560 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6561 int length;
6562
6563 ENTER;
6564 ipr_scsi_bus_speed_limit(ioa_cfg);
6565 ipr_check_term_power(ioa_cfg, mode_pages);
6566 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
6567 length = mode_pages->hdr.length + 1;
6568 mode_pages->hdr.length = 0;
6569
6570 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6571 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6572 length);
6573
6574 ipr_cmd->job_step = ipr_set_supported_devs;
6575 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6576 struct ipr_resource_entry, queue);
6577 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6578
6579 LEAVE;
6580 return IPR_RC_JOB_RETURN;
6581 }
6582
6583 /**
6584 * ipr_build_mode_sense - Builds a mode sense command
6585 * @ipr_cmd: ipr command struct
6586 * @res: resource entry struct
6587 * @parm: Byte 2 of mode sense command
6588 * @dma_addr: DMA address of mode sense buffer
6589 * @xfer_len: Size of DMA buffer
6590 *
6591 * Return value:
6592 * none
6593 **/
6594 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
6595 __be32 res_handle,
6596 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
6597 {
6598 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6599
6600 ioarcb->res_handle = res_handle;
6601 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
6602 ioarcb->cmd_pkt.cdb[2] = parm;
6603 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6604 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6605
6606 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6607 }
6608
6609 /**
6610 * ipr_reset_cmd_failed - Handle failure of IOA reset command
6611 * @ipr_cmd: ipr command struct
6612 *
6613 * This function handles the failure of an IOA bringup command.
6614 *
6615 * Return value:
6616 * IPR_RC_JOB_RETURN
6617 **/
6618 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
6619 {
6620 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6621 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6622
6623 dev_err(&ioa_cfg->pdev->dev,
6624 "0x%02X failed with IOASC: 0x%08X\n",
6625 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
6626
6627 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6628 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6629 return IPR_RC_JOB_RETURN;
6630 }
6631
6632 /**
6633 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
6634 * @ipr_cmd: ipr command struct
6635 *
6636 * This function handles the failure of a Mode Sense to the IOAFP.
6637 * Some adapters do not handle all mode pages.
6638 *
6639 * Return value:
6640 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6641 **/
6642 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
6643 {
6644 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6645 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6646
6647 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6648 ipr_cmd->job_step = ipr_set_supported_devs;
6649 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
6650 struct ipr_resource_entry, queue);
6651 return IPR_RC_JOB_CONTINUE;
6652 }
6653
6654 return ipr_reset_cmd_failed(ipr_cmd);
6655 }
6656
6657 /**
6658 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
6659 * @ipr_cmd: ipr command struct
6660 *
6661 * This function send a Page 28 mode sense to the IOA to
6662 * retrieve SCSI bus attributes.
6663 *
6664 * Return value:
6665 * IPR_RC_JOB_RETURN
6666 **/
6667 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
6668 {
6669 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6670
6671 ENTER;
6672 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6673 0x28, ioa_cfg->vpd_cbs_dma +
6674 offsetof(struct ipr_misc_cbs, mode_pages),
6675 sizeof(struct ipr_mode_pages));
6676
6677 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
6678 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
6679
6680 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6681
6682 LEAVE;
6683 return IPR_RC_JOB_RETURN;
6684 }
6685
6686 /**
6687 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
6688 * @ipr_cmd: ipr command struct
6689 *
6690 * This function enables dual IOA RAID support if possible.
6691 *
6692 * Return value:
6693 * IPR_RC_JOB_RETURN
6694 **/
6695 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
6696 {
6697 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6698 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
6699 struct ipr_mode_page24 *mode_page;
6700 int length;
6701
6702 ENTER;
6703 mode_page = ipr_get_mode_page(mode_pages, 0x24,
6704 sizeof(struct ipr_mode_page24));
6705
6706 if (mode_page)
6707 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
6708
6709 length = mode_pages->hdr.length + 1;
6710 mode_pages->hdr.length = 0;
6711
6712 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
6713 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
6714 length);
6715
6716 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6717 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6718
6719 LEAVE;
6720 return IPR_RC_JOB_RETURN;
6721 }
6722
6723 /**
6724 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
6725 * @ipr_cmd: ipr command struct
6726 *
6727 * This function handles the failure of a Mode Sense to the IOAFP.
6728 * Some adapters do not handle all mode pages.
6729 *
6730 * Return value:
6731 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6732 **/
6733 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
6734 {
6735 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6736
6737 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
6738 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6739 return IPR_RC_JOB_CONTINUE;
6740 }
6741
6742 return ipr_reset_cmd_failed(ipr_cmd);
6743 }
6744
6745 /**
6746 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
6747 * @ipr_cmd: ipr command struct
6748 *
6749 * This function send a mode sense to the IOA to retrieve
6750 * the IOA Advanced Function Control mode page.
6751 *
6752 * Return value:
6753 * IPR_RC_JOB_RETURN
6754 **/
6755 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
6756 {
6757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6758
6759 ENTER;
6760 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
6761 0x24, ioa_cfg->vpd_cbs_dma +
6762 offsetof(struct ipr_misc_cbs, mode_pages),
6763 sizeof(struct ipr_mode_pages));
6764
6765 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
6766 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
6767
6768 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6769
6770 LEAVE;
6771 return IPR_RC_JOB_RETURN;
6772 }
6773
6774 /**
6775 * ipr_init_res_table - Initialize the resource table
6776 * @ipr_cmd: ipr command struct
6777 *
6778 * This function looks through the existing resource table, comparing
6779 * it with the config table. This function will take care of old/new
6780 * devices and schedule adding/removing them from the mid-layer
6781 * as appropriate.
6782 *
6783 * Return value:
6784 * IPR_RC_JOB_CONTINUE
6785 **/
6786 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
6787 {
6788 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6789 struct ipr_resource_entry *res, *temp;
6790 struct ipr_config_table_entry_wrapper cfgtew;
6791 int entries, found, flag, i;
6792 LIST_HEAD(old_res);
6793
6794 ENTER;
6795 if (ioa_cfg->sis64)
6796 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
6797 else
6798 flag = ioa_cfg->u.cfg_table->hdr.flags;
6799
6800 if (flag & IPR_UCODE_DOWNLOAD_REQ)
6801 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6802
6803 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6804 list_move_tail(&res->queue, &old_res);
6805
6806 if (ioa_cfg->sis64)
6807 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
6808 else
6809 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
6810
6811 for (i = 0; i < entries; i++) {
6812 if (ioa_cfg->sis64)
6813 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
6814 else
6815 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
6816 found = 0;
6817
6818 list_for_each_entry_safe(res, temp, &old_res, queue) {
6819 if (ipr_is_same_device(res, &cfgtew)) {
6820 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6821 found = 1;
6822 break;
6823 }
6824 }
6825
6826 if (!found) {
6827 if (list_empty(&ioa_cfg->free_res_q)) {
6828 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6829 break;
6830 }
6831
6832 found = 1;
6833 res = list_entry(ioa_cfg->free_res_q.next,
6834 struct ipr_resource_entry, queue);
6835 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6836 ipr_init_res_entry(res, &cfgtew);
6837 res->add_to_ml = 1;
6838 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
6839 res->sdev->allow_restart = 1;
6840
6841 if (found)
6842 ipr_update_res_entry(res, &cfgtew);
6843 }
6844
6845 list_for_each_entry_safe(res, temp, &old_res, queue) {
6846 if (res->sdev) {
6847 res->del_from_ml = 1;
6848 res->res_handle = IPR_INVALID_RES_HANDLE;
6849 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6850 }
6851 }
6852
6853 list_for_each_entry_safe(res, temp, &old_res, queue) {
6854 ipr_clear_res_target(res);
6855 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6856 }
6857
6858 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6859 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6860 else
6861 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6862
6863 LEAVE;
6864 return IPR_RC_JOB_CONTINUE;
6865 }
6866
6867 /**
6868 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6869 * @ipr_cmd: ipr command struct
6870 *
6871 * This function sends a Query IOA Configuration command
6872 * to the adapter to retrieve the IOA configuration table.
6873 *
6874 * Return value:
6875 * IPR_RC_JOB_RETURN
6876 **/
6877 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6878 {
6879 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6880 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6881 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6882 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6883
6884 ENTER;
6885 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6886 ioa_cfg->dual_raid = 1;
6887 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6888 ucode_vpd->major_release, ucode_vpd->card_type,
6889 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6890 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6891 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6892
6893 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6894 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
6895 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
6896 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
6897
6898 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
6899 IPR_IOADL_FLAGS_READ_LAST);
6900
6901 ipr_cmd->job_step = ipr_init_res_table;
6902
6903 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6904
6905 LEAVE;
6906 return IPR_RC_JOB_RETURN;
6907 }
6908
6909 /**
6910 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6911 * @ipr_cmd: ipr command struct
6912 *
6913 * This utility function sends an inquiry to the adapter.
6914 *
6915 * Return value:
6916 * none
6917 **/
6918 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6919 dma_addr_t dma_addr, u8 xfer_len)
6920 {
6921 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6922
6923 ENTER;
6924 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6925 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6926
6927 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6928 ioarcb->cmd_pkt.cdb[1] = flags;
6929 ioarcb->cmd_pkt.cdb[2] = page;
6930 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6931
6932 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
6933
6934 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6935 LEAVE;
6936 }
6937
6938 /**
6939 * ipr_inquiry_page_supported - Is the given inquiry page supported
6940 * @page0: inquiry page 0 buffer
6941 * @page: page code.
6942 *
6943 * This function determines if the specified inquiry page is supported.
6944 *
6945 * Return value:
6946 * 1 if page is supported / 0 if not
6947 **/
6948 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6949 {
6950 int i;
6951
6952 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6953 if (page0->page[i] == page)
6954 return 1;
6955
6956 return 0;
6957 }
6958
6959 /**
6960 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6961 * @ipr_cmd: ipr command struct
6962 *
6963 * This function sends a Page 0xD0 inquiry to the adapter
6964 * to retrieve adapter capabilities.
6965 *
6966 * Return value:
6967 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6968 **/
6969 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6970 {
6971 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6972 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6973 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6974
6975 ENTER;
6976 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6977 memset(cap, 0, sizeof(*cap));
6978
6979 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6980 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6981 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6982 sizeof(struct ipr_inquiry_cap));
6983 return IPR_RC_JOB_RETURN;
6984 }
6985
6986 LEAVE;
6987 return IPR_RC_JOB_CONTINUE;
6988 }
6989
6990 /**
6991 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6992 * @ipr_cmd: ipr command struct
6993 *
6994 * This function sends a Page 3 inquiry to the adapter
6995 * to retrieve software VPD information.
6996 *
6997 * Return value:
6998 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6999 **/
7000 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7001 {
7002 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7003
7004 ENTER;
7005
7006 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7007
7008 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7009 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7010 sizeof(struct ipr_inquiry_page3));
7011
7012 LEAVE;
7013 return IPR_RC_JOB_RETURN;
7014 }
7015
7016 /**
7017 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7018 * @ipr_cmd: ipr command struct
7019 *
7020 * This function sends a Page 0 inquiry to the adapter
7021 * to retrieve supported inquiry pages.
7022 *
7023 * Return value:
7024 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7025 **/
7026 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7027 {
7028 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7029 char type[5];
7030
7031 ENTER;
7032
7033 /* Grab the type out of the VPD and store it away */
7034 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7035 type[4] = '\0';
7036 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7037
7038 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7039
7040 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7041 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7042 sizeof(struct ipr_inquiry_page0));
7043
7044 LEAVE;
7045 return IPR_RC_JOB_RETURN;
7046 }
7047
7048 /**
7049 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7050 * @ipr_cmd: ipr command struct
7051 *
7052 * This function sends a standard inquiry to the adapter.
7053 *
7054 * Return value:
7055 * IPR_RC_JOB_RETURN
7056 **/
7057 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7058 {
7059 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7060
7061 ENTER;
7062 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7063
7064 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7065 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7066 sizeof(struct ipr_ioa_vpd));
7067
7068 LEAVE;
7069 return IPR_RC_JOB_RETURN;
7070 }
7071
7072 /**
7073 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7074 * @ipr_cmd: ipr command struct
7075 *
7076 * This function send an Identify Host Request Response Queue
7077 * command to establish the HRRQ with the adapter.
7078 *
7079 * Return value:
7080 * IPR_RC_JOB_RETURN
7081 **/
7082 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7083 {
7084 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7085 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7086
7087 ENTER;
7088 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7089
7090 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7091 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7092
7093 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7094 if (ioa_cfg->sis64)
7095 ioarcb->cmd_pkt.cdb[1] = 0x1;
7096 ioarcb->cmd_pkt.cdb[2] =
7097 ((u64) ioa_cfg->host_rrq_dma >> 24) & 0xff;
7098 ioarcb->cmd_pkt.cdb[3] =
7099 ((u64) ioa_cfg->host_rrq_dma >> 16) & 0xff;
7100 ioarcb->cmd_pkt.cdb[4] =
7101 ((u64) ioa_cfg->host_rrq_dma >> 8) & 0xff;
7102 ioarcb->cmd_pkt.cdb[5] =
7103 ((u64) ioa_cfg->host_rrq_dma) & 0xff;
7104 ioarcb->cmd_pkt.cdb[7] =
7105 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
7106 ioarcb->cmd_pkt.cdb[8] =
7107 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
7108
7109 if (ioa_cfg->sis64) {
7110 ioarcb->cmd_pkt.cdb[10] =
7111 ((u64) ioa_cfg->host_rrq_dma >> 56) & 0xff;
7112 ioarcb->cmd_pkt.cdb[11] =
7113 ((u64) ioa_cfg->host_rrq_dma >> 48) & 0xff;
7114 ioarcb->cmd_pkt.cdb[12] =
7115 ((u64) ioa_cfg->host_rrq_dma >> 40) & 0xff;
7116 ioarcb->cmd_pkt.cdb[13] =
7117 ((u64) ioa_cfg->host_rrq_dma >> 32) & 0xff;
7118 }
7119
7120 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7121
7122 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7123
7124 LEAVE;
7125 return IPR_RC_JOB_RETURN;
7126 }
7127
7128 /**
7129 * ipr_reset_timer_done - Adapter reset timer function
7130 * @ipr_cmd: ipr command struct
7131 *
7132 * Description: This function is used in adapter reset processing
7133 * for timing events. If the reset_cmd pointer in the IOA
7134 * config struct is not this adapter's we are doing nested
7135 * resets and fail_all_ops will take care of freeing the
7136 * command block.
7137 *
7138 * Return value:
7139 * none
7140 **/
7141 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7142 {
7143 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7144 unsigned long lock_flags = 0;
7145
7146 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7147
7148 if (ioa_cfg->reset_cmd == ipr_cmd) {
7149 list_del(&ipr_cmd->queue);
7150 ipr_cmd->done(ipr_cmd);
7151 }
7152
7153 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7154 }
7155
7156 /**
7157 * ipr_reset_start_timer - Start a timer for adapter reset job
7158 * @ipr_cmd: ipr command struct
7159 * @timeout: timeout value
7160 *
7161 * Description: This function is used in adapter reset processing
7162 * for timing events. If the reset_cmd pointer in the IOA
7163 * config struct is not this adapter's we are doing nested
7164 * resets and fail_all_ops will take care of freeing the
7165 * command block.
7166 *
7167 * Return value:
7168 * none
7169 **/
7170 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7171 unsigned long timeout)
7172 {
7173 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7174 ipr_cmd->done = ipr_reset_ioa_job;
7175
7176 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7177 ipr_cmd->timer.expires = jiffies + timeout;
7178 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7179 add_timer(&ipr_cmd->timer);
7180 }
7181
7182 /**
7183 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7184 * @ioa_cfg: ioa cfg struct
7185 *
7186 * Return value:
7187 * nothing
7188 **/
7189 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7190 {
7191 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
7192
7193 /* Initialize Host RRQ pointers */
7194 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
7195 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
7196 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
7197 ioa_cfg->toggle_bit = 1;
7198
7199 /* Zero out config table */
7200 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7201 }
7202
7203 /**
7204 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7205 * @ipr_cmd: ipr command struct
7206 *
7207 * Return value:
7208 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7209 **/
7210 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7211 {
7212 unsigned long stage, stage_time;
7213 u32 feedback;
7214 volatile u32 int_reg;
7215 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7216 u64 maskval = 0;
7217
7218 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7219 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7220 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7221
7222 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7223
7224 /* sanity check the stage_time value */
7225 if (stage_time == 0)
7226 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7227 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7228 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7229 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7230 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7231
7232 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7233 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7234 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7235 stage_time = ioa_cfg->transop_timeout;
7236 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7237 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7238 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7239 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7240 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7241 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7242 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7243 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7244 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7245 return IPR_RC_JOB_CONTINUE;
7246 }
7247 }
7248
7249 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7250 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7251 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7252 ipr_cmd->done = ipr_reset_ioa_job;
7253 add_timer(&ipr_cmd->timer);
7254 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7255
7256 return IPR_RC_JOB_RETURN;
7257 }
7258
7259 /**
7260 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7261 * @ipr_cmd: ipr command struct
7262 *
7263 * This function reinitializes some control blocks and
7264 * enables destructive diagnostics on the adapter.
7265 *
7266 * Return value:
7267 * IPR_RC_JOB_RETURN
7268 **/
7269 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7270 {
7271 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7272 volatile u32 int_reg;
7273 volatile u64 maskval;
7274
7275 ENTER;
7276 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7277 ipr_init_ioa_mem(ioa_cfg);
7278
7279 ioa_cfg->allow_interrupts = 1;
7280 if (ioa_cfg->sis64) {
7281 /* Set the adapter to the correct endian mode. */
7282 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7283 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7284 }
7285
7286 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7287
7288 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7289 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7290 ioa_cfg->regs.clr_interrupt_mask_reg32);
7291 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7292 return IPR_RC_JOB_CONTINUE;
7293 }
7294
7295 /* Enable destructive diagnostics on IOA */
7296 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7297
7298 if (ioa_cfg->sis64) {
7299 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7300 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7301 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7302 } else
7303 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7304
7305 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7306
7307 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7308
7309 if (ioa_cfg->sis64) {
7310 ipr_cmd->job_step = ipr_reset_next_stage;
7311 return IPR_RC_JOB_CONTINUE;
7312 }
7313
7314 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7315 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7316 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7317 ipr_cmd->done = ipr_reset_ioa_job;
7318 add_timer(&ipr_cmd->timer);
7319 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
7320
7321 LEAVE;
7322 return IPR_RC_JOB_RETURN;
7323 }
7324
7325 /**
7326 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7327 * @ipr_cmd: ipr command struct
7328 *
7329 * This function is invoked when an adapter dump has run out
7330 * of processing time.
7331 *
7332 * Return value:
7333 * IPR_RC_JOB_CONTINUE
7334 **/
7335 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7336 {
7337 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7338
7339 if (ioa_cfg->sdt_state == GET_DUMP)
7340 ioa_cfg->sdt_state = ABORT_DUMP;
7341
7342 ipr_cmd->job_step = ipr_reset_alert;
7343
7344 return IPR_RC_JOB_CONTINUE;
7345 }
7346
7347 /**
7348 * ipr_unit_check_no_data - Log a unit check/no data error log
7349 * @ioa_cfg: ioa config struct
7350 *
7351 * Logs an error indicating the adapter unit checked, but for some
7352 * reason, we were unable to fetch the unit check buffer.
7353 *
7354 * Return value:
7355 * nothing
7356 **/
7357 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7358 {
7359 ioa_cfg->errors_logged++;
7360 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7361 }
7362
7363 /**
7364 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7365 * @ioa_cfg: ioa config struct
7366 *
7367 * Fetches the unit check buffer from the adapter by clocking the data
7368 * through the mailbox register.
7369 *
7370 * Return value:
7371 * nothing
7372 **/
7373 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7374 {
7375 unsigned long mailbox;
7376 struct ipr_hostrcb *hostrcb;
7377 struct ipr_uc_sdt sdt;
7378 int rc, length;
7379 u32 ioasc;
7380
7381 mailbox = readl(ioa_cfg->ioa_mailbox);
7382
7383 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
7384 ipr_unit_check_no_data(ioa_cfg);
7385 return;
7386 }
7387
7388 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7389 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7390 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7391
7392 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7393 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7394 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
7395 ipr_unit_check_no_data(ioa_cfg);
7396 return;
7397 }
7398
7399 /* Find length of the first sdt entry (UC buffer) */
7400 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7401 length = be32_to_cpu(sdt.entry[0].end_token);
7402 else
7403 length = (be32_to_cpu(sdt.entry[0].end_token) -
7404 be32_to_cpu(sdt.entry[0].start_token)) &
7405 IPR_FMT2_MBX_ADDR_MASK;
7406
7407 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7408 struct ipr_hostrcb, queue);
7409 list_del(&hostrcb->queue);
7410 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7411
7412 rc = ipr_get_ldump_data_section(ioa_cfg,
7413 be32_to_cpu(sdt.entry[0].start_token),
7414 (__be32 *)&hostrcb->hcam,
7415 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7416
7417 if (!rc) {
7418 ipr_handle_log_data(ioa_cfg, hostrcb);
7419 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
7420 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7421 ioa_cfg->sdt_state == GET_DUMP)
7422 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7423 } else
7424 ipr_unit_check_no_data(ioa_cfg);
7425
7426 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7427 }
7428
7429 /**
7430 * ipr_reset_restore_cfg_space - Restore PCI config space.
7431 * @ipr_cmd: ipr command struct
7432 *
7433 * Description: This function restores the saved PCI config space of
7434 * the adapter, fails all outstanding ops back to the callers, and
7435 * fetches the dump/unit check if applicable to this reset.
7436 *
7437 * Return value:
7438 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7439 **/
7440 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
7441 {
7442 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7443 volatile u32 int_reg;
7444 int rc;
7445
7446 ENTER;
7447 ioa_cfg->pdev->state_saved = true;
7448 rc = pci_restore_state(ioa_cfg->pdev);
7449
7450 if (rc != PCIBIOS_SUCCESSFUL) {
7451 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7452 return IPR_RC_JOB_CONTINUE;
7453 }
7454
7455 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
7456 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7457 return IPR_RC_JOB_CONTINUE;
7458 }
7459
7460 ipr_fail_all_ops(ioa_cfg);
7461
7462 if (ioa_cfg->sis64) {
7463 /* Set the adapter to the correct endian mode. */
7464 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7465 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7466 }
7467
7468 if (ioa_cfg->ioa_unit_checked) {
7469 ioa_cfg->ioa_unit_checked = 0;
7470 ipr_get_unit_check_buffer(ioa_cfg);
7471 ipr_cmd->job_step = ipr_reset_alert;
7472 ipr_reset_start_timer(ipr_cmd, 0);
7473 return IPR_RC_JOB_RETURN;
7474 }
7475
7476 if (ioa_cfg->in_ioa_bringdown) {
7477 ipr_cmd->job_step = ipr_ioa_bringdown_done;
7478 } else {
7479 ipr_cmd->job_step = ipr_reset_enable_ioa;
7480
7481 if (GET_DUMP == ioa_cfg->sdt_state) {
7482 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
7483 ipr_cmd->job_step = ipr_reset_wait_for_dump;
7484 schedule_work(&ioa_cfg->work_q);
7485 return IPR_RC_JOB_RETURN;
7486 }
7487 }
7488
7489 LEAVE;
7490 return IPR_RC_JOB_CONTINUE;
7491 }
7492
7493 /**
7494 * ipr_reset_bist_done - BIST has completed on the adapter.
7495 * @ipr_cmd: ipr command struct
7496 *
7497 * Description: Unblock config space and resume the reset process.
7498 *
7499 * Return value:
7500 * IPR_RC_JOB_CONTINUE
7501 **/
7502 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
7503 {
7504 ENTER;
7505 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7506 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
7507 LEAVE;
7508 return IPR_RC_JOB_CONTINUE;
7509 }
7510
7511 /**
7512 * ipr_reset_start_bist - Run BIST on the adapter.
7513 * @ipr_cmd: ipr command struct
7514 *
7515 * Description: This function runs BIST on the adapter, then delays 2 seconds.
7516 *
7517 * Return value:
7518 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7519 **/
7520 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
7521 {
7522 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7523 int rc = PCIBIOS_SUCCESSFUL;
7524
7525 ENTER;
7526 pci_block_user_cfg_access(ioa_cfg->pdev);
7527
7528 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
7529 writel(IPR_UPROCI_SIS64_START_BIST,
7530 ioa_cfg->regs.set_uproc_interrupt_reg32);
7531 else
7532 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
7533
7534 if (rc == PCIBIOS_SUCCESSFUL) {
7535 ipr_cmd->job_step = ipr_reset_bist_done;
7536 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7537 rc = IPR_RC_JOB_RETURN;
7538 } else {
7539 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
7540 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
7541 rc = IPR_RC_JOB_CONTINUE;
7542 }
7543
7544 LEAVE;
7545 return rc;
7546 }
7547
7548 /**
7549 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
7550 * @ipr_cmd: ipr command struct
7551 *
7552 * Description: This clears PCI reset to the adapter and delays two seconds.
7553 *
7554 * Return value:
7555 * IPR_RC_JOB_RETURN
7556 **/
7557 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
7558 {
7559 ENTER;
7560 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
7561 ipr_cmd->job_step = ipr_reset_bist_done;
7562 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
7563 LEAVE;
7564 return IPR_RC_JOB_RETURN;
7565 }
7566
7567 /**
7568 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
7569 * @ipr_cmd: ipr command struct
7570 *
7571 * Description: This asserts PCI reset to the adapter.
7572 *
7573 * Return value:
7574 * IPR_RC_JOB_RETURN
7575 **/
7576 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
7577 {
7578 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7579 struct pci_dev *pdev = ioa_cfg->pdev;
7580
7581 ENTER;
7582 pci_block_user_cfg_access(pdev);
7583 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
7584 ipr_cmd->job_step = ipr_reset_slot_reset_done;
7585 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
7586 LEAVE;
7587 return IPR_RC_JOB_RETURN;
7588 }
7589
7590 /**
7591 * ipr_reset_allowed - Query whether or not IOA can be reset
7592 * @ioa_cfg: ioa config struct
7593 *
7594 * Return value:
7595 * 0 if reset not allowed / non-zero if reset is allowed
7596 **/
7597 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
7598 {
7599 volatile u32 temp_reg;
7600
7601 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7602 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
7603 }
7604
7605 /**
7606 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
7607 * @ipr_cmd: ipr command struct
7608 *
7609 * Description: This function waits for adapter permission to run BIST,
7610 * then runs BIST. If the adapter does not give permission after a
7611 * reasonable time, we will reset the adapter anyway. The impact of
7612 * resetting the adapter without warning the adapter is the risk of
7613 * losing the persistent error log on the adapter. If the adapter is
7614 * reset while it is writing to the flash on the adapter, the flash
7615 * segment will have bad ECC and be zeroed.
7616 *
7617 * Return value:
7618 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7619 **/
7620 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
7621 {
7622 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7623 int rc = IPR_RC_JOB_RETURN;
7624
7625 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
7626 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
7627 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7628 } else {
7629 ipr_cmd->job_step = ioa_cfg->reset;
7630 rc = IPR_RC_JOB_CONTINUE;
7631 }
7632
7633 return rc;
7634 }
7635
7636 /**
7637 * ipr_reset_alert - Alert the adapter of a pending reset
7638 * @ipr_cmd: ipr command struct
7639 *
7640 * Description: This function alerts the adapter that it will be reset.
7641 * If memory space is not currently enabled, proceed directly
7642 * to running BIST on the adapter. The timer must always be started
7643 * so we guarantee we do not run BIST from ipr_isr.
7644 *
7645 * Return value:
7646 * IPR_RC_JOB_RETURN
7647 **/
7648 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
7649 {
7650 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7651 u16 cmd_reg;
7652 int rc;
7653
7654 ENTER;
7655 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
7656
7657 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
7658 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
7659 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
7660 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
7661 } else {
7662 ipr_cmd->job_step = ioa_cfg->reset;
7663 }
7664
7665 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
7666 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
7667
7668 LEAVE;
7669 return IPR_RC_JOB_RETURN;
7670 }
7671
7672 /**
7673 * ipr_reset_ucode_download_done - Microcode download completion
7674 * @ipr_cmd: ipr command struct
7675 *
7676 * Description: This function unmaps the microcode download buffer.
7677 *
7678 * Return value:
7679 * IPR_RC_JOB_CONTINUE
7680 **/
7681 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
7682 {
7683 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7684 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7685
7686 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
7687 sglist->num_sg, DMA_TO_DEVICE);
7688
7689 ipr_cmd->job_step = ipr_reset_alert;
7690 return IPR_RC_JOB_CONTINUE;
7691 }
7692
7693 /**
7694 * ipr_reset_ucode_download - Download microcode to the adapter
7695 * @ipr_cmd: ipr command struct
7696 *
7697 * Description: This function checks to see if it there is microcode
7698 * to download to the adapter. If there is, a download is performed.
7699 *
7700 * Return value:
7701 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7702 **/
7703 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
7704 {
7705 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7706 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
7707
7708 ENTER;
7709 ipr_cmd->job_step = ipr_reset_alert;
7710
7711 if (!sglist)
7712 return IPR_RC_JOB_CONTINUE;
7713
7714 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7715 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7716 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
7717 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
7718 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
7719 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
7720 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
7721
7722 if (ioa_cfg->sis64)
7723 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
7724 else
7725 ipr_build_ucode_ioadl(ipr_cmd, sglist);
7726 ipr_cmd->job_step = ipr_reset_ucode_download_done;
7727
7728 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7729 IPR_WRITE_BUFFER_TIMEOUT);
7730
7731 LEAVE;
7732 return IPR_RC_JOB_RETURN;
7733 }
7734
7735 /**
7736 * ipr_reset_shutdown_ioa - Shutdown the adapter
7737 * @ipr_cmd: ipr command struct
7738 *
7739 * Description: This function issues an adapter shutdown of the
7740 * specified type to the specified adapter as part of the
7741 * adapter reset job.
7742 *
7743 * Return value:
7744 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7745 **/
7746 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
7747 {
7748 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7749 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
7750 unsigned long timeout;
7751 int rc = IPR_RC_JOB_CONTINUE;
7752
7753 ENTER;
7754 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
7755 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7756 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7757 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
7758 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
7759
7760 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
7761 timeout = IPR_SHUTDOWN_TIMEOUT;
7762 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
7763 timeout = IPR_INTERNAL_TIMEOUT;
7764 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7765 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
7766 else
7767 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
7768
7769 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
7770
7771 rc = IPR_RC_JOB_RETURN;
7772 ipr_cmd->job_step = ipr_reset_ucode_download;
7773 } else
7774 ipr_cmd->job_step = ipr_reset_alert;
7775
7776 LEAVE;
7777 return rc;
7778 }
7779
7780 /**
7781 * ipr_reset_ioa_job - Adapter reset job
7782 * @ipr_cmd: ipr command struct
7783 *
7784 * Description: This function is the job router for the adapter reset job.
7785 *
7786 * Return value:
7787 * none
7788 **/
7789 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
7790 {
7791 u32 rc, ioasc;
7792 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7793
7794 do {
7795 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7796
7797 if (ioa_cfg->reset_cmd != ipr_cmd) {
7798 /*
7799 * We are doing nested adapter resets and this is
7800 * not the current reset job.
7801 */
7802 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7803 return;
7804 }
7805
7806 if (IPR_IOASC_SENSE_KEY(ioasc)) {
7807 rc = ipr_cmd->job_step_failed(ipr_cmd);
7808 if (rc == IPR_RC_JOB_RETURN)
7809 return;
7810 }
7811
7812 ipr_reinit_ipr_cmnd(ipr_cmd);
7813 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
7814 rc = ipr_cmd->job_step(ipr_cmd);
7815 } while(rc == IPR_RC_JOB_CONTINUE);
7816 }
7817
7818 /**
7819 * _ipr_initiate_ioa_reset - Initiate an adapter reset
7820 * @ioa_cfg: ioa config struct
7821 * @job_step: first job step of reset job
7822 * @shutdown_type: shutdown type
7823 *
7824 * Description: This function will initiate the reset of the given adapter
7825 * starting at the selected job step.
7826 * If the caller needs to wait on the completion of the reset,
7827 * the caller must sleep on the reset_wait_q.
7828 *
7829 * Return value:
7830 * none
7831 **/
7832 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7833 int (*job_step) (struct ipr_cmnd *),
7834 enum ipr_shutdown_type shutdown_type)
7835 {
7836 struct ipr_cmnd *ipr_cmd;
7837
7838 ioa_cfg->in_reset_reload = 1;
7839 ioa_cfg->allow_cmds = 0;
7840 scsi_block_requests(ioa_cfg->host);
7841
7842 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
7843 ioa_cfg->reset_cmd = ipr_cmd;
7844 ipr_cmd->job_step = job_step;
7845 ipr_cmd->u.shutdown_type = shutdown_type;
7846
7847 ipr_reset_ioa_job(ipr_cmd);
7848 }
7849
7850 /**
7851 * ipr_initiate_ioa_reset - Initiate an adapter reset
7852 * @ioa_cfg: ioa config struct
7853 * @shutdown_type: shutdown type
7854 *
7855 * Description: This function will initiate the reset of the given adapter.
7856 * If the caller needs to wait on the completion of the reset,
7857 * the caller must sleep on the reset_wait_q.
7858 *
7859 * Return value:
7860 * none
7861 **/
7862 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
7863 enum ipr_shutdown_type shutdown_type)
7864 {
7865 if (ioa_cfg->ioa_is_dead)
7866 return;
7867
7868 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
7869 ioa_cfg->sdt_state = ABORT_DUMP;
7870
7871 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
7872 dev_err(&ioa_cfg->pdev->dev,
7873 "IOA taken offline - error recovery failed\n");
7874
7875 ioa_cfg->reset_retries = 0;
7876 ioa_cfg->ioa_is_dead = 1;
7877
7878 if (ioa_cfg->in_ioa_bringdown) {
7879 ioa_cfg->reset_cmd = NULL;
7880 ioa_cfg->in_reset_reload = 0;
7881 ipr_fail_all_ops(ioa_cfg);
7882 wake_up_all(&ioa_cfg->reset_wait_q);
7883
7884 spin_unlock_irq(ioa_cfg->host->host_lock);
7885 scsi_unblock_requests(ioa_cfg->host);
7886 spin_lock_irq(ioa_cfg->host->host_lock);
7887 return;
7888 } else {
7889 ioa_cfg->in_ioa_bringdown = 1;
7890 shutdown_type = IPR_SHUTDOWN_NONE;
7891 }
7892 }
7893
7894 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
7895 shutdown_type);
7896 }
7897
7898 /**
7899 * ipr_reset_freeze - Hold off all I/O activity
7900 * @ipr_cmd: ipr command struct
7901 *
7902 * Description: If the PCI slot is frozen, hold off all I/O
7903 * activity; then, as soon as the slot is available again,
7904 * initiate an adapter reset.
7905 */
7906 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
7907 {
7908 /* Disallow new interrupts, avoid loop */
7909 ipr_cmd->ioa_cfg->allow_interrupts = 0;
7910 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7911 ipr_cmd->done = ipr_reset_ioa_job;
7912 return IPR_RC_JOB_RETURN;
7913 }
7914
7915 /**
7916 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
7917 * @pdev: PCI device struct
7918 *
7919 * Description: This routine is called to tell us that the PCI bus
7920 * is down. Can't do anything here, except put the device driver
7921 * into a holding pattern, waiting for the PCI bus to come back.
7922 */
7923 static void ipr_pci_frozen(struct pci_dev *pdev)
7924 {
7925 unsigned long flags = 0;
7926 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7927
7928 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7929 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
7930 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7931 }
7932
7933 /**
7934 * ipr_pci_slot_reset - Called when PCI slot has been reset.
7935 * @pdev: PCI device struct
7936 *
7937 * Description: This routine is called by the pci error recovery
7938 * code after the PCI slot has been reset, just before we
7939 * should resume normal operations.
7940 */
7941 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
7942 {
7943 unsigned long flags = 0;
7944 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7945
7946 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7947 if (ioa_cfg->needs_warm_reset)
7948 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7949 else
7950 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
7951 IPR_SHUTDOWN_NONE);
7952 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7953 return PCI_ERS_RESULT_RECOVERED;
7954 }
7955
7956 /**
7957 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
7958 * @pdev: PCI device struct
7959 *
7960 * Description: This routine is called when the PCI bus has
7961 * permanently failed.
7962 */
7963 static void ipr_pci_perm_failure(struct pci_dev *pdev)
7964 {
7965 unsigned long flags = 0;
7966 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7967
7968 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7969 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7970 ioa_cfg->sdt_state = ABORT_DUMP;
7971 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7972 ioa_cfg->in_ioa_bringdown = 1;
7973 ioa_cfg->allow_cmds = 0;
7974 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7975 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7976 }
7977
7978 /**
7979 * ipr_pci_error_detected - Called when a PCI error is detected.
7980 * @pdev: PCI device struct
7981 * @state: PCI channel state
7982 *
7983 * Description: Called when a PCI error is detected.
7984 *
7985 * Return value:
7986 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7987 */
7988 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7989 pci_channel_state_t state)
7990 {
7991 switch (state) {
7992 case pci_channel_io_frozen:
7993 ipr_pci_frozen(pdev);
7994 return PCI_ERS_RESULT_NEED_RESET;
7995 case pci_channel_io_perm_failure:
7996 ipr_pci_perm_failure(pdev);
7997 return PCI_ERS_RESULT_DISCONNECT;
7998 break;
7999 default:
8000 break;
8001 }
8002 return PCI_ERS_RESULT_NEED_RESET;
8003 }
8004
8005 /**
8006 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8007 * @ioa_cfg: ioa cfg struct
8008 *
8009 * Description: This is the second phase of adapter intialization
8010 * This function takes care of initilizing the adapter to the point
8011 * where it can accept new commands.
8012
8013 * Return value:
8014 * 0 on success / -EIO on failure
8015 **/
8016 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8017 {
8018 int rc = 0;
8019 unsigned long host_lock_flags = 0;
8020
8021 ENTER;
8022 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8023 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
8024 if (ioa_cfg->needs_hard_reset) {
8025 ioa_cfg->needs_hard_reset = 0;
8026 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8027 } else
8028 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8029 IPR_SHUTDOWN_NONE);
8030
8031 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8032 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8033 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8034
8035 if (ioa_cfg->ioa_is_dead) {
8036 rc = -EIO;
8037 } else if (ipr_invalid_adapter(ioa_cfg)) {
8038 if (!ipr_testmode)
8039 rc = -EIO;
8040
8041 dev_err(&ioa_cfg->pdev->dev,
8042 "Adapter not supported in this hardware configuration.\n");
8043 }
8044
8045 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8046
8047 LEAVE;
8048 return rc;
8049 }
8050
8051 /**
8052 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8053 * @ioa_cfg: ioa config struct
8054 *
8055 * Return value:
8056 * none
8057 **/
8058 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8059 {
8060 int i;
8061
8062 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8063 if (ioa_cfg->ipr_cmnd_list[i])
8064 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8065 ioa_cfg->ipr_cmnd_list[i],
8066 ioa_cfg->ipr_cmnd_list_dma[i]);
8067
8068 ioa_cfg->ipr_cmnd_list[i] = NULL;
8069 }
8070
8071 if (ioa_cfg->ipr_cmd_pool)
8072 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
8073
8074 ioa_cfg->ipr_cmd_pool = NULL;
8075 }
8076
8077 /**
8078 * ipr_free_mem - Frees memory allocated for an adapter
8079 * @ioa_cfg: ioa cfg struct
8080 *
8081 * Return value:
8082 * nothing
8083 **/
8084 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8085 {
8086 int i;
8087
8088 kfree(ioa_cfg->res_entries);
8089 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8090 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8091 ipr_free_cmd_blks(ioa_cfg);
8092 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8093 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8094 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8095 ioa_cfg->u.cfg_table,
8096 ioa_cfg->cfg_table_dma);
8097
8098 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8099 pci_free_consistent(ioa_cfg->pdev,
8100 sizeof(struct ipr_hostrcb),
8101 ioa_cfg->hostrcb[i],
8102 ioa_cfg->hostrcb_dma[i]);
8103 }
8104
8105 ipr_free_dump(ioa_cfg);
8106 kfree(ioa_cfg->trace);
8107 }
8108
8109 /**
8110 * ipr_free_all_resources - Free all allocated resources for an adapter.
8111 * @ipr_cmd: ipr command struct
8112 *
8113 * This function frees all allocated resources for the
8114 * specified adapter.
8115 *
8116 * Return value:
8117 * none
8118 **/
8119 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8120 {
8121 struct pci_dev *pdev = ioa_cfg->pdev;
8122
8123 ENTER;
8124 free_irq(pdev->irq, ioa_cfg);
8125 pci_disable_msi(pdev);
8126 iounmap(ioa_cfg->hdw_dma_regs);
8127 pci_release_regions(pdev);
8128 ipr_free_mem(ioa_cfg);
8129 scsi_host_put(ioa_cfg->host);
8130 pci_disable_device(pdev);
8131 LEAVE;
8132 }
8133
8134 /**
8135 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8136 * @ioa_cfg: ioa config struct
8137 *
8138 * Return value:
8139 * 0 on success / -ENOMEM on allocation failure
8140 **/
8141 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8142 {
8143 struct ipr_cmnd *ipr_cmd;
8144 struct ipr_ioarcb *ioarcb;
8145 dma_addr_t dma_addr;
8146 int i;
8147
8148 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
8149 sizeof(struct ipr_cmnd), 16, 0);
8150
8151 if (!ioa_cfg->ipr_cmd_pool)
8152 return -ENOMEM;
8153
8154 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8155 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
8156
8157 if (!ipr_cmd) {
8158 ipr_free_cmd_blks(ioa_cfg);
8159 return -ENOMEM;
8160 }
8161
8162 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8163 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8164 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8165
8166 ioarcb = &ipr_cmd->ioarcb;
8167 ipr_cmd->dma_addr = dma_addr;
8168 if (ioa_cfg->sis64)
8169 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8170 else
8171 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8172
8173 ioarcb->host_response_handle = cpu_to_be32(i << 2);
8174 if (ioa_cfg->sis64) {
8175 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8176 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8177 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
8178 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
8179 } else {
8180 ioarcb->write_ioadl_addr =
8181 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8182 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8183 ioarcb->ioasa_host_pci_addr =
8184 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
8185 }
8186 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8187 ipr_cmd->cmd_index = i;
8188 ipr_cmd->ioa_cfg = ioa_cfg;
8189 ipr_cmd->sense_buffer_dma = dma_addr +
8190 offsetof(struct ipr_cmnd, sense_buffer);
8191
8192 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
8193 }
8194
8195 return 0;
8196 }
8197
8198 /**
8199 * ipr_alloc_mem - Allocate memory for an adapter
8200 * @ioa_cfg: ioa config struct
8201 *
8202 * Return value:
8203 * 0 on success / non-zero for error
8204 **/
8205 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8206 {
8207 struct pci_dev *pdev = ioa_cfg->pdev;
8208 int i, rc = -ENOMEM;
8209
8210 ENTER;
8211 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
8212 ioa_cfg->max_devs_supported, GFP_KERNEL);
8213
8214 if (!ioa_cfg->res_entries)
8215 goto out;
8216
8217 if (ioa_cfg->sis64) {
8218 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8219 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8220 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8221 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8222 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8223 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8224 }
8225
8226 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
8227 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
8228 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8229 }
8230
8231 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8232 sizeof(struct ipr_misc_cbs),
8233 &ioa_cfg->vpd_cbs_dma);
8234
8235 if (!ioa_cfg->vpd_cbs)
8236 goto out_free_res_entries;
8237
8238 if (ipr_alloc_cmd_blks(ioa_cfg))
8239 goto out_free_vpd_cbs;
8240
8241 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
8242 sizeof(u32) * IPR_NUM_CMD_BLKS,
8243 &ioa_cfg->host_rrq_dma);
8244
8245 if (!ioa_cfg->host_rrq)
8246 goto out_ipr_free_cmd_blocks;
8247
8248 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
8249 ioa_cfg->cfg_table_size,
8250 &ioa_cfg->cfg_table_dma);
8251
8252 if (!ioa_cfg->u.cfg_table)
8253 goto out_free_host_rrq;
8254
8255 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8256 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
8257 sizeof(struct ipr_hostrcb),
8258 &ioa_cfg->hostrcb_dma[i]);
8259
8260 if (!ioa_cfg->hostrcb[i])
8261 goto out_free_hostrcb_dma;
8262
8263 ioa_cfg->hostrcb[i]->hostrcb_dma =
8264 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
8265 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
8266 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
8267 }
8268
8269 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
8270 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
8271
8272 if (!ioa_cfg->trace)
8273 goto out_free_hostrcb_dma;
8274
8275 rc = 0;
8276 out:
8277 LEAVE;
8278 return rc;
8279
8280 out_free_hostrcb_dma:
8281 while (i-- > 0) {
8282 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
8283 ioa_cfg->hostrcb[i],
8284 ioa_cfg->hostrcb_dma[i]);
8285 }
8286 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
8287 ioa_cfg->u.cfg_table,
8288 ioa_cfg->cfg_table_dma);
8289 out_free_host_rrq:
8290 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
8291 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
8292 out_ipr_free_cmd_blocks:
8293 ipr_free_cmd_blks(ioa_cfg);
8294 out_free_vpd_cbs:
8295 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
8296 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8297 out_free_res_entries:
8298 kfree(ioa_cfg->res_entries);
8299 goto out;
8300 }
8301
8302 /**
8303 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
8304 * @ioa_cfg: ioa config struct
8305 *
8306 * Return value:
8307 * none
8308 **/
8309 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
8310 {
8311 int i;
8312
8313 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
8314 ioa_cfg->bus_attr[i].bus = i;
8315 ioa_cfg->bus_attr[i].qas_enabled = 0;
8316 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
8317 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
8318 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
8319 else
8320 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
8321 }
8322 }
8323
8324 /**
8325 * ipr_init_ioa_cfg - Initialize IOA config struct
8326 * @ioa_cfg: ioa config struct
8327 * @host: scsi host struct
8328 * @pdev: PCI dev struct
8329 *
8330 * Return value:
8331 * none
8332 **/
8333 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
8334 struct Scsi_Host *host, struct pci_dev *pdev)
8335 {
8336 const struct ipr_interrupt_offsets *p;
8337 struct ipr_interrupts *t;
8338 void __iomem *base;
8339
8340 ioa_cfg->host = host;
8341 ioa_cfg->pdev = pdev;
8342 ioa_cfg->log_level = ipr_log_level;
8343 ioa_cfg->doorbell = IPR_DOORBELL;
8344 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
8345 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
8346 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
8347 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
8348 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
8349 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
8350 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
8351 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
8352
8353 INIT_LIST_HEAD(&ioa_cfg->free_q);
8354 INIT_LIST_HEAD(&ioa_cfg->pending_q);
8355 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
8356 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
8357 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
8358 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
8359 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
8360 init_waitqueue_head(&ioa_cfg->reset_wait_q);
8361 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8362 ioa_cfg->sdt_state = INACTIVE;
8363
8364 ipr_initialize_bus_attr(ioa_cfg);
8365 ioa_cfg->max_devs_supported = ipr_max_devs;
8366
8367 if (ioa_cfg->sis64) {
8368 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
8369 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
8370 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
8371 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
8372 } else {
8373 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
8374 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
8375 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
8376 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
8377 }
8378 host->max_channel = IPR_MAX_BUS_TO_SCAN;
8379 host->unique_id = host->host_no;
8380 host->max_cmd_len = IPR_MAX_CDB_LEN;
8381 pci_set_drvdata(pdev, ioa_cfg);
8382
8383 p = &ioa_cfg->chip_cfg->regs;
8384 t = &ioa_cfg->regs;
8385 base = ioa_cfg->hdw_dma_regs;
8386
8387 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
8388 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
8389 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
8390 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
8391 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
8392 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
8393 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
8394 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
8395 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
8396 t->ioarrin_reg = base + p->ioarrin_reg;
8397 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
8398 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
8399 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
8400 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
8401 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
8402 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
8403
8404 if (ioa_cfg->sis64) {
8405 t->init_feedback_reg = base + p->init_feedback_reg;
8406 t->dump_addr_reg = base + p->dump_addr_reg;
8407 t->dump_data_reg = base + p->dump_data_reg;
8408 t->endian_swap_reg = base + p->endian_swap_reg;
8409 }
8410 }
8411
8412 /**
8413 * ipr_get_chip_info - Find adapter chip information
8414 * @dev_id: PCI device id struct
8415 *
8416 * Return value:
8417 * ptr to chip information on success / NULL on failure
8418 **/
8419 static const struct ipr_chip_t * __devinit
8420 ipr_get_chip_info(const struct pci_device_id *dev_id)
8421 {
8422 int i;
8423
8424 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
8425 if (ipr_chip[i].vendor == dev_id->vendor &&
8426 ipr_chip[i].device == dev_id->device)
8427 return &ipr_chip[i];
8428 return NULL;
8429 }
8430
8431 /**
8432 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
8433 * @pdev: PCI device struct
8434 *
8435 * Description: Simply set the msi_received flag to 1 indicating that
8436 * Message Signaled Interrupts are supported.
8437 *
8438 * Return value:
8439 * 0 on success / non-zero on failure
8440 **/
8441 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
8442 {
8443 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
8444 unsigned long lock_flags = 0;
8445 irqreturn_t rc = IRQ_HANDLED;
8446
8447 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8448
8449 ioa_cfg->msi_received = 1;
8450 wake_up(&ioa_cfg->msi_wait_q);
8451
8452 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8453 return rc;
8454 }
8455
8456 /**
8457 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
8458 * @pdev: PCI device struct
8459 *
8460 * Description: The return value from pci_enable_msi() can not always be
8461 * trusted. This routine sets up and initiates a test interrupt to determine
8462 * if the interrupt is received via the ipr_test_intr() service routine.
8463 * If the tests fails, the driver will fall back to LSI.
8464 *
8465 * Return value:
8466 * 0 on success / non-zero on failure
8467 **/
8468 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
8469 struct pci_dev *pdev)
8470 {
8471 int rc;
8472 volatile u32 int_reg;
8473 unsigned long lock_flags = 0;
8474
8475 ENTER;
8476
8477 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8478 init_waitqueue_head(&ioa_cfg->msi_wait_q);
8479 ioa_cfg->msi_received = 0;
8480 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8481 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
8482 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8483 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8484
8485 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
8486 if (rc) {
8487 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
8488 return rc;
8489 } else if (ipr_debug)
8490 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
8491
8492 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
8493 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8494 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
8495 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8496
8497 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8498 if (!ioa_cfg->msi_received) {
8499 /* MSI test failed */
8500 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
8501 rc = -EOPNOTSUPP;
8502 } else if (ipr_debug)
8503 dev_info(&pdev->dev, "MSI test succeeded.\n");
8504
8505 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8506
8507 free_irq(pdev->irq, ioa_cfg);
8508
8509 LEAVE;
8510
8511 return rc;
8512 }
8513
8514 /**
8515 * ipr_probe_ioa - Allocates memory and does first stage of initialization
8516 * @pdev: PCI device struct
8517 * @dev_id: PCI device id struct
8518 *
8519 * Return value:
8520 * 0 on success / non-zero on failure
8521 **/
8522 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
8523 const struct pci_device_id *dev_id)
8524 {
8525 struct ipr_ioa_cfg *ioa_cfg;
8526 struct Scsi_Host *host;
8527 unsigned long ipr_regs_pci;
8528 void __iomem *ipr_regs;
8529 int rc = PCIBIOS_SUCCESSFUL;
8530 volatile u32 mask, uproc, interrupts;
8531
8532 ENTER;
8533
8534 if ((rc = pci_enable_device(pdev))) {
8535 dev_err(&pdev->dev, "Cannot enable adapter\n");
8536 goto out;
8537 }
8538
8539 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
8540
8541 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
8542
8543 if (!host) {
8544 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
8545 rc = -ENOMEM;
8546 goto out_disable;
8547 }
8548
8549 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
8550 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
8551 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
8552 sata_port_info.flags, &ipr_sata_ops);
8553
8554 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
8555
8556 if (!ioa_cfg->ipr_chip) {
8557 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
8558 dev_id->vendor, dev_id->device);
8559 goto out_scsi_host_put;
8560 }
8561
8562 /* set SIS 32 or SIS 64 */
8563 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
8564 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
8565
8566 if (ipr_transop_timeout)
8567 ioa_cfg->transop_timeout = ipr_transop_timeout;
8568 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
8569 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
8570 else
8571 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
8572
8573 ioa_cfg->revid = pdev->revision;
8574
8575 ipr_regs_pci = pci_resource_start(pdev, 0);
8576
8577 rc = pci_request_regions(pdev, IPR_NAME);
8578 if (rc < 0) {
8579 dev_err(&pdev->dev,
8580 "Couldn't register memory range of registers\n");
8581 goto out_scsi_host_put;
8582 }
8583
8584 ipr_regs = pci_ioremap_bar(pdev, 0);
8585
8586 if (!ipr_regs) {
8587 dev_err(&pdev->dev,
8588 "Couldn't map memory range of registers\n");
8589 rc = -ENOMEM;
8590 goto out_release_regions;
8591 }
8592
8593 ioa_cfg->hdw_dma_regs = ipr_regs;
8594 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
8595 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
8596
8597 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
8598
8599 pci_set_master(pdev);
8600
8601 if (ioa_cfg->sis64) {
8602 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8603 if (rc < 0) {
8604 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
8605 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8606 }
8607
8608 } else
8609 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8610
8611 if (rc < 0) {
8612 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
8613 goto cleanup_nomem;
8614 }
8615
8616 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
8617 ioa_cfg->chip_cfg->cache_line_size);
8618
8619 if (rc != PCIBIOS_SUCCESSFUL) {
8620 dev_err(&pdev->dev, "Write of cache line size failed\n");
8621 rc = -EIO;
8622 goto cleanup_nomem;
8623 }
8624
8625 /* Enable MSI style interrupts if they are supported. */
8626 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
8627 rc = ipr_test_msi(ioa_cfg, pdev);
8628 if (rc == -EOPNOTSUPP)
8629 pci_disable_msi(pdev);
8630 else if (rc)
8631 goto out_msi_disable;
8632 else
8633 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
8634 } else if (ipr_debug)
8635 dev_info(&pdev->dev, "Cannot enable MSI.\n");
8636
8637 /* Save away PCI config space for use following IOA reset */
8638 rc = pci_save_state(pdev);
8639
8640 if (rc != PCIBIOS_SUCCESSFUL) {
8641 dev_err(&pdev->dev, "Failed to save PCI config space\n");
8642 rc = -EIO;
8643 goto cleanup_nomem;
8644 }
8645
8646 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
8647 goto cleanup_nomem;
8648
8649 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
8650 goto cleanup_nomem;
8651
8652 if (ioa_cfg->sis64)
8653 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
8654 + ((sizeof(struct ipr_config_table_entry64)
8655 * ioa_cfg->max_devs_supported)));
8656 else
8657 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
8658 + ((sizeof(struct ipr_config_table_entry)
8659 * ioa_cfg->max_devs_supported)));
8660
8661 rc = ipr_alloc_mem(ioa_cfg);
8662 if (rc < 0) {
8663 dev_err(&pdev->dev,
8664 "Couldn't allocate enough memory for device driver!\n");
8665 goto cleanup_nomem;
8666 }
8667
8668 /*
8669 * If HRRQ updated interrupt is not masked, or reset alert is set,
8670 * the card is in an unknown state and needs a hard reset
8671 */
8672 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
8673 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
8674 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
8675 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
8676 ioa_cfg->needs_hard_reset = 1;
8677 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
8678 ioa_cfg->needs_hard_reset = 1;
8679 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
8680 ioa_cfg->ioa_unit_checked = 1;
8681
8682 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8683 rc = request_irq(pdev->irq, ipr_isr,
8684 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
8685 IPR_NAME, ioa_cfg);
8686
8687 if (rc) {
8688 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
8689 pdev->irq, rc);
8690 goto cleanup_nolog;
8691 }
8692
8693 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
8694 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
8695 ioa_cfg->needs_warm_reset = 1;
8696 ioa_cfg->reset = ipr_reset_slot_reset;
8697 } else
8698 ioa_cfg->reset = ipr_reset_start_bist;
8699
8700 spin_lock(&ipr_driver_lock);
8701 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
8702 spin_unlock(&ipr_driver_lock);
8703
8704 LEAVE;
8705 out:
8706 return rc;
8707
8708 cleanup_nolog:
8709 ipr_free_mem(ioa_cfg);
8710 cleanup_nomem:
8711 iounmap(ipr_regs);
8712 out_msi_disable:
8713 pci_disable_msi(pdev);
8714 out_release_regions:
8715 pci_release_regions(pdev);
8716 out_scsi_host_put:
8717 scsi_host_put(host);
8718 out_disable:
8719 pci_disable_device(pdev);
8720 goto out;
8721 }
8722
8723 /**
8724 * ipr_scan_vsets - Scans for VSET devices
8725 * @ioa_cfg: ioa config struct
8726 *
8727 * Description: Since the VSET resources do not follow SAM in that we can have
8728 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
8729 *
8730 * Return value:
8731 * none
8732 **/
8733 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
8734 {
8735 int target, lun;
8736
8737 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
8738 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
8739 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
8740 }
8741
8742 /**
8743 * ipr_initiate_ioa_bringdown - Bring down an adapter
8744 * @ioa_cfg: ioa config struct
8745 * @shutdown_type: shutdown type
8746 *
8747 * Description: This function will initiate bringing down the adapter.
8748 * This consists of issuing an IOA shutdown to the adapter
8749 * to flush the cache, and running BIST.
8750 * If the caller needs to wait on the completion of the reset,
8751 * the caller must sleep on the reset_wait_q.
8752 *
8753 * Return value:
8754 * none
8755 **/
8756 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
8757 enum ipr_shutdown_type shutdown_type)
8758 {
8759 ENTER;
8760 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8761 ioa_cfg->sdt_state = ABORT_DUMP;
8762 ioa_cfg->reset_retries = 0;
8763 ioa_cfg->in_ioa_bringdown = 1;
8764 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
8765 LEAVE;
8766 }
8767
8768 /**
8769 * __ipr_remove - Remove a single adapter
8770 * @pdev: pci device struct
8771 *
8772 * Adapter hot plug remove entry point.
8773 *
8774 * Return value:
8775 * none
8776 **/
8777 static void __ipr_remove(struct pci_dev *pdev)
8778 {
8779 unsigned long host_lock_flags = 0;
8780 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8781 ENTER;
8782
8783 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8784 while(ioa_cfg->in_reset_reload) {
8785 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8786 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8787 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8788 }
8789
8790 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8791
8792 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8793 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8794 flush_scheduled_work();
8795 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8796
8797 spin_lock(&ipr_driver_lock);
8798 list_del(&ioa_cfg->queue);
8799 spin_unlock(&ipr_driver_lock);
8800
8801 if (ioa_cfg->sdt_state == ABORT_DUMP)
8802 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8804
8805 ipr_free_all_resources(ioa_cfg);
8806
8807 LEAVE;
8808 }
8809
8810 /**
8811 * ipr_remove - IOA hot plug remove entry point
8812 * @pdev: pci device struct
8813 *
8814 * Adapter hot plug remove entry point.
8815 *
8816 * Return value:
8817 * none
8818 **/
8819 static void __devexit ipr_remove(struct pci_dev *pdev)
8820 {
8821 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8822
8823 ENTER;
8824
8825 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
8826 &ipr_trace_attr);
8827 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
8828 &ipr_dump_attr);
8829 scsi_remove_host(ioa_cfg->host);
8830
8831 __ipr_remove(pdev);
8832
8833 LEAVE;
8834 }
8835
8836 /**
8837 * ipr_probe - Adapter hot plug add entry point
8838 *
8839 * Return value:
8840 * 0 on success / non-zero on failure
8841 **/
8842 static int __devinit ipr_probe(struct pci_dev *pdev,
8843 const struct pci_device_id *dev_id)
8844 {
8845 struct ipr_ioa_cfg *ioa_cfg;
8846 int rc;
8847
8848 rc = ipr_probe_ioa(pdev, dev_id);
8849
8850 if (rc)
8851 return rc;
8852
8853 ioa_cfg = pci_get_drvdata(pdev);
8854 rc = ipr_probe_ioa_part2(ioa_cfg);
8855
8856 if (rc) {
8857 __ipr_remove(pdev);
8858 return rc;
8859 }
8860
8861 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
8862
8863 if (rc) {
8864 __ipr_remove(pdev);
8865 return rc;
8866 }
8867
8868 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
8869 &ipr_trace_attr);
8870
8871 if (rc) {
8872 scsi_remove_host(ioa_cfg->host);
8873 __ipr_remove(pdev);
8874 return rc;
8875 }
8876
8877 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
8878 &ipr_dump_attr);
8879
8880 if (rc) {
8881 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
8882 &ipr_trace_attr);
8883 scsi_remove_host(ioa_cfg->host);
8884 __ipr_remove(pdev);
8885 return rc;
8886 }
8887
8888 scsi_scan_host(ioa_cfg->host);
8889 ipr_scan_vsets(ioa_cfg);
8890 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
8891 ioa_cfg->allow_ml_add_del = 1;
8892 ioa_cfg->host->max_channel = IPR_VSET_BUS;
8893 schedule_work(&ioa_cfg->work_q);
8894 return 0;
8895 }
8896
8897 /**
8898 * ipr_shutdown - Shutdown handler.
8899 * @pdev: pci device struct
8900 *
8901 * This function is invoked upon system shutdown/reboot. It will issue
8902 * an adapter shutdown to the adapter to flush the write cache.
8903 *
8904 * Return value:
8905 * none
8906 **/
8907 static void ipr_shutdown(struct pci_dev *pdev)
8908 {
8909 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8910 unsigned long lock_flags = 0;
8911
8912 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8913 while(ioa_cfg->in_reset_reload) {
8914 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8915 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8916 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8917 }
8918
8919 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
8920 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8921 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8922 }
8923
8924 static struct pci_device_id ipr_pci_table[] __devinitdata = {
8925 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8926 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
8927 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8928 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
8929 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8930 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
8931 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
8932 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
8933 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8934 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
8935 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8936 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
8937 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8938 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
8939 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
8940 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
8941 IPR_USE_LONG_TRANSOP_TIMEOUT },
8942 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
8943 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
8944 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
8945 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
8946 IPR_USE_LONG_TRANSOP_TIMEOUT },
8947 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
8948 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
8949 IPR_USE_LONG_TRANSOP_TIMEOUT },
8950 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
8951 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
8952 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
8953 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
8954 IPR_USE_LONG_TRANSOP_TIMEOUT},
8955 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
8956 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
8957 IPR_USE_LONG_TRANSOP_TIMEOUT },
8958 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
8959 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
8960 IPR_USE_LONG_TRANSOP_TIMEOUT },
8961 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
8962 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
8963 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
8964 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
8965 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
8966 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
8967 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
8968 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
8969 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
8970 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
8971 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
8972 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
8973 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
8974 IPR_USE_LONG_TRANSOP_TIMEOUT },
8975 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
8976 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
8977 IPR_USE_LONG_TRANSOP_TIMEOUT },
8978 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
8979 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
8980 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
8981 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
8982 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
8983 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
8984 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8985 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
8986 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8987 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
8988 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8989 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
8990 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8991 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0, 0 },
8992 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_ASIC_E2,
8993 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
8994 { }
8995 };
8996 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
8997
8998 static struct pci_error_handlers ipr_err_handler = {
8999 .error_detected = ipr_pci_error_detected,
9000 .slot_reset = ipr_pci_slot_reset,
9001 };
9002
9003 static struct pci_driver ipr_driver = {
9004 .name = IPR_NAME,
9005 .id_table = ipr_pci_table,
9006 .probe = ipr_probe,
9007 .remove = __devexit_p(ipr_remove),
9008 .shutdown = ipr_shutdown,
9009 .err_handler = &ipr_err_handler,
9010 };
9011
9012 /**
9013 * ipr_halt_done - Shutdown prepare completion
9014 *
9015 * Return value:
9016 * none
9017 **/
9018 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9019 {
9020 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9021
9022 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
9023 }
9024
9025 /**
9026 * ipr_halt - Issue shutdown prepare to all adapters
9027 *
9028 * Return value:
9029 * NOTIFY_OK on success / NOTIFY_DONE on failure
9030 **/
9031 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9032 {
9033 struct ipr_cmnd *ipr_cmd;
9034 struct ipr_ioa_cfg *ioa_cfg;
9035 unsigned long flags = 0;
9036
9037 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
9038 return NOTIFY_DONE;
9039
9040 spin_lock(&ipr_driver_lock);
9041
9042 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
9043 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9044 if (!ioa_cfg->allow_cmds) {
9045 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9046 continue;
9047 }
9048
9049 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9050 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9051 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9052 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9053 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
9054
9055 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
9056 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9057 }
9058 spin_unlock(&ipr_driver_lock);
9059
9060 return NOTIFY_OK;
9061 }
9062
9063 static struct notifier_block ipr_notifier = {
9064 ipr_halt, NULL, 0
9065 };
9066
9067 /**
9068 * ipr_init - Module entry point
9069 *
9070 * Return value:
9071 * 0 on success / negative value on failure
9072 **/
9073 static int __init ipr_init(void)
9074 {
9075 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
9076 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
9077
9078 register_reboot_notifier(&ipr_notifier);
9079 return pci_register_driver(&ipr_driver);
9080 }
9081
9082 /**
9083 * ipr_exit - Module unload
9084 *
9085 * Module unload entry point.
9086 *
9087 * Return value:
9088 * none
9089 **/
9090 static void __exit ipr_exit(void)
9091 {
9092 unregister_reboot_notifier(&ipr_notifier);
9093 pci_unregister_driver(&ipr_driver);
9094 }
9095
9096 module_init(ipr_init);
9097 module_exit(ipr_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree