]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Adaptec AIC79xx device driver for Linux. | |
3 | * | |
4 | * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#171 $ | |
5 | * | |
6 | * -------------------------------------------------------------------------- | |
7 | * Copyright (c) 1994-2000 Justin T. Gibbs. | |
8 | * Copyright (c) 1997-1999 Doug Ledford | |
9 | * Copyright (c) 2000-2003 Adaptec Inc. | |
10 | * All rights reserved. | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions, and the following disclaimer, | |
17 | * without modification. | |
18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
19 | * substantially similar to the "NO WARRANTY" disclaimer below | |
20 | * ("Disclaimer") and any redistribution must be conditioned upon | |
21 | * including a substantially similar Disclaimer requirement for further | |
22 | * binary redistribution. | |
23 | * 3. Neither the names of the above-listed copyright holders nor the names | |
24 | * of any contributors may be used to endorse or promote products derived | |
25 | * from this software without specific prior written permission. | |
26 | * | |
27 | * Alternatively, this software may be distributed under the terms of the | |
28 | * GNU General Public License ("GPL") version 2 as published by the Free | |
29 | * Software Foundation. | |
30 | * | |
31 | * NO WARRANTY | |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
42 | * POSSIBILITY OF SUCH DAMAGES. | |
43 | */ | |
44 | ||
45 | #include "aic79xx_osm.h" | |
46 | #include "aic79xx_inline.h" | |
47 | #include <scsi/scsicam.h> | |
48 | ||
73a25462 HR |
49 | static struct scsi_transport_template *ahd_linux_transport_template = NULL; |
50 | ||
1da177e4 | 51 | #include <linux/init.h> /* __setup */ |
1da177e4 | 52 | #include <linux/mm.h> /* For fetching system memory size */ |
73a25462 | 53 | #include <linux/blkdev.h> /* For block_size() */ |
1da177e4 | 54 | #include <linux/delay.h> /* For ssleep/msleep */ |
017560fc | 55 | #include <linux/device.h> |
5a0e3ad6 | 56 | #include <linux/slab.h> |
1da177e4 | 57 | |
1da177e4 LT |
58 | /* |
59 | * Bucket size for counting good commands in between bad ones. | |
60 | */ | |
61 | #define AHD_LINUX_ERR_THRESH 1000 | |
62 | ||
63 | /* | |
64 | * Set this to the delay in seconds after SCSI bus reset. | |
65 | * Note, we honor this only for the initial bus reset. | |
66 | * The scsi error recovery code performs its own bus settle | |
67 | * delay handling for error recovery actions. | |
68 | */ | |
69 | #ifdef CONFIG_AIC79XX_RESET_DELAY_MS | |
70 | #define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS | |
71 | #else | |
72 | #define AIC79XX_RESET_DELAY 5000 | |
73 | #endif | |
74 | ||
75 | /* | |
76 | * To change the default number of tagged transactions allowed per-device, | |
77 | * add a line to the lilo.conf file like: | |
78 | * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}" | |
79 | * which will result in the first four devices on the first two | |
80 | * controllers being set to a tagged queue depth of 32. | |
81 | * | |
82 | * The tag_commands is an array of 16 to allow for wide and twin adapters. | |
83 | * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15 | |
84 | * for channel 1. | |
85 | */ | |
86 | typedef struct { | |
87 | uint16_t tag_commands[16]; /* Allow for wide/twin adapters. */ | |
88 | } adapter_tag_info_t; | |
89 | ||
90 | /* | |
91 | * Modify this as you see fit for your system. | |
92 | * | |
93 | * 0 tagged queuing disabled | |
94 | * 1 <= n <= 253 n == max tags ever dispatched. | |
95 | * | |
96 | * The driver will throttle the number of commands dispatched to a | |
97 | * device if it returns queue full. For devices with a fixed maximum | |
98 | * queue depth, the driver will eventually determine this depth and | |
99 | * lock it in (a console message is printed to indicate that a lock | |
100 | * has occurred). On some devices, queue full is returned for a temporary | |
101 | * resource shortage. These devices will return queue full at varying | |
102 | * depths. The driver will throttle back when the queue fulls occur and | |
103 | * attempt to slowly increase the depth over time as the device recovers | |
104 | * from the resource shortage. | |
105 | * | |
106 | * In this example, the first line will disable tagged queueing for all | |
107 | * the devices on the first probed aic79xx adapter. | |
108 | * | |
109 | * The second line enables tagged queueing with 4 commands/LUN for IDs | |
110 | * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the | |
111 | * driver to attempt to use up to 64 tags for ID 1. | |
112 | * | |
113 | * The third line is the same as the first line. | |
114 | * | |
115 | * The fourth line disables tagged queueing for devices 0 and 3. It | |
116 | * enables tagged queueing for the other IDs, with 16 commands/LUN | |
117 | * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for | |
118 | * IDs 2, 5-7, and 9-15. | |
119 | */ | |
120 | ||
121 | /* | |
122 | * NOTE: The below structure is for reference only, the actual structure | |
123 | * to modify in order to change things is just below this comment block. | |
124 | adapter_tag_info_t aic79xx_tag_info[] = | |
125 | { | |
126 | {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, | |
127 | {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}}, | |
128 | {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, | |
129 | {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}} | |
130 | }; | |
131 | */ | |
132 | ||
133 | #ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE | |
134 | #define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE | |
135 | #else | |
136 | #define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE | |
137 | #endif | |
138 | ||
139 | #define AIC79XX_CONFIGED_TAG_COMMANDS { \ | |
140 | AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ | |
141 | AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ | |
142 | AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ | |
143 | AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ | |
144 | AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ | |
145 | AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ | |
146 | AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ | |
147 | AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \ | |
148 | } | |
149 | ||
150 | /* | |
151 | * By default, use the number of commands specified by | |
152 | * the users kernel configuration. | |
153 | */ | |
154 | static adapter_tag_info_t aic79xx_tag_info[] = | |
155 | { | |
156 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
157 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
158 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
159 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
160 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
161 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
162 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
163 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
164 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
165 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
166 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
167 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
168 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
169 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
170 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
171 | {AIC79XX_CONFIGED_TAG_COMMANDS} | |
172 | }; | |
173 | ||
1da177e4 LT |
174 | /* |
175 | * The I/O cell on the chip is very configurable in respect to its analog | |
176 | * characteristics. Set the defaults here; they can be overriden with | |
177 | * the proper insmod parameters. | |
178 | */ | |
179 | struct ahd_linux_iocell_opts | |
180 | { | |
181 | uint8_t precomp; | |
182 | uint8_t slewrate; | |
183 | uint8_t amplitude; | |
184 | }; | |
185 | #define AIC79XX_DEFAULT_PRECOMP 0xFF | |
186 | #define AIC79XX_DEFAULT_SLEWRATE 0xFF | |
187 | #define AIC79XX_DEFAULT_AMPLITUDE 0xFF | |
188 | #define AIC79XX_DEFAULT_IOOPTS \ | |
189 | { \ | |
190 | AIC79XX_DEFAULT_PRECOMP, \ | |
191 | AIC79XX_DEFAULT_SLEWRATE, \ | |
192 | AIC79XX_DEFAULT_AMPLITUDE \ | |
193 | } | |
194 | #define AIC79XX_PRECOMP_INDEX 0 | |
195 | #define AIC79XX_SLEWRATE_INDEX 1 | |
196 | #define AIC79XX_AMPLITUDE_INDEX 2 | |
980b306a | 197 | static const struct ahd_linux_iocell_opts aic79xx_iocell_info[] = |
1da177e4 LT |
198 | { |
199 | AIC79XX_DEFAULT_IOOPTS, | |
200 | AIC79XX_DEFAULT_IOOPTS, | |
201 | AIC79XX_DEFAULT_IOOPTS, | |
202 | AIC79XX_DEFAULT_IOOPTS, | |
203 | AIC79XX_DEFAULT_IOOPTS, | |
204 | AIC79XX_DEFAULT_IOOPTS, | |
205 | AIC79XX_DEFAULT_IOOPTS, | |
206 | AIC79XX_DEFAULT_IOOPTS, | |
207 | AIC79XX_DEFAULT_IOOPTS, | |
208 | AIC79XX_DEFAULT_IOOPTS, | |
209 | AIC79XX_DEFAULT_IOOPTS, | |
210 | AIC79XX_DEFAULT_IOOPTS, | |
211 | AIC79XX_DEFAULT_IOOPTS, | |
212 | AIC79XX_DEFAULT_IOOPTS, | |
213 | AIC79XX_DEFAULT_IOOPTS, | |
214 | AIC79XX_DEFAULT_IOOPTS | |
215 | }; | |
216 | ||
217 | /* | |
218 | * There should be a specific return value for this in scsi.h, but | |
219 | * it seems that most drivers ignore it. | |
220 | */ | |
221 | #define DID_UNDERFLOW DID_ERROR | |
222 | ||
223 | void | |
224 | ahd_print_path(struct ahd_softc *ahd, struct scb *scb) | |
225 | { | |
226 | printk("(scsi%d:%c:%d:%d): ", | |
227 | ahd->platform_data->host->host_no, | |
228 | scb != NULL ? SCB_GET_CHANNEL(ahd, scb) : 'X', | |
229 | scb != NULL ? SCB_GET_TARGET(ahd, scb) : -1, | |
230 | scb != NULL ? SCB_GET_LUN(scb) : -1); | |
231 | } | |
232 | ||
233 | /* | |
234 | * XXX - these options apply unilaterally to _all_ adapters | |
235 | * cards in the system. This should be fixed. Exceptions to this | |
236 | * rule are noted in the comments. | |
237 | */ | |
238 | ||
239 | /* | |
240 | * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This | |
241 | * has no effect on any later resets that might occur due to things like | |
242 | * SCSI bus timeouts. | |
243 | */ | |
244 | static uint32_t aic79xx_no_reset; | |
245 | ||
1da177e4 LT |
246 | /* |
247 | * Should we force EXTENDED translation on a controller. | |
248 | * 0 == Use whatever is in the SEEPROM or default to off | |
249 | * 1 == Use whatever is in the SEEPROM or default to on | |
250 | */ | |
251 | static uint32_t aic79xx_extended; | |
252 | ||
253 | /* | |
254 | * PCI bus parity checking of the Adaptec controllers. This is somewhat | |
255 | * dubious at best. To my knowledge, this option has never actually | |
256 | * solved a PCI parity problem, but on certain machines with broken PCI | |
257 | * chipset configurations, it can generate tons of false error messages. | |
258 | * It's included in the driver for completeness. | |
259 | * 0 = Shut off PCI parity check | |
260 | * non-0 = Enable PCI parity check | |
261 | * | |
262 | * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this | |
263 | * variable to -1 you would actually want to simply pass the variable | |
264 | * name without a number. That will invert the 0 which will result in | |
265 | * -1. | |
266 | */ | |
267 | static uint32_t aic79xx_pci_parity = ~0; | |
268 | ||
269 | /* | |
270 | * There are lots of broken chipsets in the world. Some of them will | |
271 | * violate the PCI spec when we issue byte sized memory writes to our | |
272 | * controller. I/O mapped register access, if allowed by the given | |
273 | * platform, will work in almost all cases. | |
274 | */ | |
275 | uint32_t aic79xx_allow_memio = ~0; | |
276 | ||
1da177e4 LT |
277 | /* |
278 | * So that we can set how long each device is given as a selection timeout. | |
279 | * The table of values goes like this: | |
280 | * 0 - 256ms | |
281 | * 1 - 128ms | |
282 | * 2 - 64ms | |
283 | * 3 - 32ms | |
284 | * We default to 256ms because some older devices need a longer time | |
285 | * to respond to initial selection. | |
286 | */ | |
287 | static uint32_t aic79xx_seltime; | |
288 | ||
289 | /* | |
290 | * Certain devices do not perform any aging on commands. Should the | |
291 | * device be saturated by commands in one portion of the disk, it is | |
292 | * possible for transactions on far away sectors to never be serviced. | |
293 | * To handle these devices, we can periodically send an ordered tag to | |
294 | * force all outstanding transactions to be serviced prior to a new | |
295 | * transaction. | |
296 | */ | |
289fe5b1 | 297 | static uint32_t aic79xx_periodic_otag; |
1da177e4 | 298 | |
3fb08612 HR |
299 | /* Some storage boxes are using an LSI chip which has a bug making it |
300 | * impossible to use aic79xx Rev B chip in 320 speeds. The following | |
301 | * storage boxes have been reported to be buggy: | |
302 | * EonStor 3U 16-Bay: U16U-G3A3 | |
303 | * EonStor 2U 12-Bay: U12U-G3A3 | |
304 | * SentinelRAID: 2500F R5 / R6 | |
305 | * SentinelRAID: 2500F R1 | |
306 | * SentinelRAID: 2500F/1500F | |
307 | * SentinelRAID: 150F | |
308 | * | |
309 | * To get around this LSI bug, you can set your board to 160 mode | |
310 | * or you can enable the SLOWCRC bit. | |
311 | */ | |
312 | uint32_t aic79xx_slowcrc; | |
313 | ||
1da177e4 LT |
314 | /* |
315 | * Module information and settable options. | |
316 | */ | |
317 | static char *aic79xx = NULL; | |
318 | ||
64624d4f HR |
319 | MODULE_AUTHOR("Maintainer: Hannes Reinecke <hare@suse.de>"); |
320 | MODULE_DESCRIPTION("Adaptec AIC790X U320 SCSI Host Bus Adapter driver"); | |
1da177e4 LT |
321 | MODULE_LICENSE("Dual BSD/GPL"); |
322 | MODULE_VERSION(AIC79XX_DRIVER_VERSION); | |
73a25462 | 323 | module_param(aic79xx, charp, 0444); |
1da177e4 | 324 | MODULE_PARM_DESC(aic79xx, |
2b6ee9b5 | 325 | "period-delimited options string:\n" |
1da177e4 LT |
326 | " verbose Enable verbose/diagnostic logging\n" |
327 | " allow_memio Allow device registers to be memory mapped\n" | |
328 | " debug Bitmask of debug values to enable\n" | |
b1c11812 | 329 | " no_reset Suppress initial bus resets\n" |
1da177e4 LT |
330 | " extended Enable extended geometry on all controllers\n" |
331 | " periodic_otag Send an ordered tagged transaction\n" | |
332 | " periodically to prevent tag starvation.\n" | |
333 | " This may be required by some older disk\n" | |
334 | " or drives/RAID arrays.\n" | |
1da177e4 LT |
335 | " tag_info:<tag_str> Set per-target tag depth\n" |
336 | " global_tag_depth:<int> Global tag depth for all targets on all buses\n" | |
1da177e4 LT |
337 | " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n" |
338 | " precomp:<pcomp_list> Set the signal precompensation (0-7).\n" | |
339 | " amplitude:<int> Set the signal amplitude (0-7).\n" | |
340 | " seltime:<int> Selection Timeout:\n" | |
341 | " (0/256ms,1/128ms,2/64ms,3/32ms)\n" | |
3fb08612 | 342 | " slowcrc Turn on the SLOWCRC bit (Rev B only)\n" |
1da177e4 | 343 | "\n" |
970e2486 LDM |
344 | " Sample modprobe configuration file:\n" |
345 | " # Enable verbose logging\n" | |
346 | " # Set tag depth on Controller 2/Target 2 to 10 tags\n" | |
347 | " # Shorten the selection timeout to 128ms\n" | |
1da177e4 LT |
348 | "\n" |
349 | " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n" | |
2b6ee9b5 | 350 | ); |
1da177e4 LT |
351 | |
352 | static void ahd_linux_handle_scsi_status(struct ahd_softc *, | |
73a25462 | 353 | struct scsi_device *, |
1da177e4 LT |
354 | struct scb *); |
355 | static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, | |
73a25462 | 356 | struct scsi_cmnd *cmd); |
6902f416 | 357 | static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd); |
1da177e4 | 358 | static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd); |
1da177e4 LT |
359 | static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd, |
360 | struct ahd_devinfo *devinfo); | |
73a25462 | 361 | static void ahd_linux_device_queue_depth(struct scsi_device *); |
60a13213 | 362 | static int ahd_linux_run_command(struct ahd_softc*, |
73a25462 | 363 | struct ahd_linux_device *, |
60a13213 | 364 | struct scsi_cmnd *); |
1da177e4 | 365 | static void ahd_linux_setup_tag_info_global(char *p); |
73a25462 | 366 | static int aic79xx_setup(char *c); |
e3e0ca51 AB |
367 | static void ahd_freeze_simq(struct ahd_softc *ahd); |
368 | static void ahd_release_simq(struct ahd_softc *ahd); | |
85a46523 CH |
369 | |
370 | static int ahd_linux_unit; | |
371 | ||
1da177e4 | 372 | |
be0d6768 DV |
373 | /************************** OS Utility Wrappers *******************************/ |
374 | void ahd_delay(long); | |
375 | void | |
376 | ahd_delay(long usec) | |
377 | { | |
378 | /* | |
379 | * udelay on Linux can have problems for | |
380 | * multi-millisecond waits. Wait at most | |
381 | * 1024us per call. | |
382 | */ | |
383 | while (usec > 0) { | |
384 | udelay(usec % 1024); | |
385 | usec -= 1024; | |
386 | } | |
387 | } | |
388 | ||
389 | ||
390 | /***************************** Low Level I/O **********************************/ | |
391 | uint8_t ahd_inb(struct ahd_softc * ahd, long port); | |
be0d6768 DV |
392 | void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val); |
393 | void ahd_outw_atomic(struct ahd_softc * ahd, | |
394 | long port, uint16_t val); | |
395 | void ahd_outsb(struct ahd_softc * ahd, long port, | |
396 | uint8_t *, int count); | |
397 | void ahd_insb(struct ahd_softc * ahd, long port, | |
398 | uint8_t *, int count); | |
399 | ||
400 | uint8_t | |
401 | ahd_inb(struct ahd_softc * ahd, long port) | |
402 | { | |
403 | uint8_t x; | |
404 | ||
405 | if (ahd->tags[0] == BUS_SPACE_MEMIO) { | |
406 | x = readb(ahd->bshs[0].maddr + port); | |
407 | } else { | |
408 | x = inb(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); | |
409 | } | |
410 | mb(); | |
411 | return (x); | |
412 | } | |
413 | ||
d1d7b19d DV |
414 | #if 0 /* unused */ |
415 | static uint16_t | |
be0d6768 DV |
416 | ahd_inw_atomic(struct ahd_softc * ahd, long port) |
417 | { | |
418 | uint8_t x; | |
419 | ||
420 | if (ahd->tags[0] == BUS_SPACE_MEMIO) { | |
421 | x = readw(ahd->bshs[0].maddr + port); | |
422 | } else { | |
423 | x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF)); | |
424 | } | |
425 | mb(); | |
426 | return (x); | |
427 | } | |
d1d7b19d | 428 | #endif |
be0d6768 DV |
429 | |
430 | void | |
431 | ahd_outb(struct ahd_softc * ahd, long port, uint8_t val) | |
432 | { | |
433 | if (ahd->tags[0] == BUS_SPACE_MEMIO) { | |
434 | writeb(val, ahd->bshs[0].maddr + port); | |
435 | } else { | |
436 | outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); | |
437 | } | |
438 | mb(); | |
439 | } | |
440 | ||
441 | void | |
442 | ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val) | |
443 | { | |
444 | if (ahd->tags[0] == BUS_SPACE_MEMIO) { | |
445 | writew(val, ahd->bshs[0].maddr + port); | |
446 | } else { | |
447 | outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF)); | |
448 | } | |
449 | mb(); | |
450 | } | |
451 | ||
452 | void | |
453 | ahd_outsb(struct ahd_softc * ahd, long port, uint8_t *array, int count) | |
454 | { | |
455 | int i; | |
456 | ||
457 | /* | |
458 | * There is probably a more efficient way to do this on Linux | |
459 | * but we don't use this for anything speed critical and this | |
460 | * should work. | |
461 | */ | |
462 | for (i = 0; i < count; i++) | |
463 | ahd_outb(ahd, port, *array++); | |
464 | } | |
465 | ||
466 | void | |
467 | ahd_insb(struct ahd_softc * ahd, long port, uint8_t *array, int count) | |
468 | { | |
469 | int i; | |
470 | ||
471 | /* | |
472 | * There is probably a more efficient way to do this on Linux | |
473 | * but we don't use this for anything speed critical and this | |
474 | * should work. | |
475 | */ | |
476 | for (i = 0; i < count; i++) | |
477 | *array++ = ahd_inb(ahd, port); | |
478 | } | |
479 | ||
480 | /******************************* PCI Routines *********************************/ | |
481 | uint32_t | |
482 | ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width) | |
483 | { | |
484 | switch (width) { | |
485 | case 1: | |
486 | { | |
487 | uint8_t retval; | |
488 | ||
489 | pci_read_config_byte(pci, reg, &retval); | |
490 | return (retval); | |
491 | } | |
492 | case 2: | |
493 | { | |
494 | uint16_t retval; | |
495 | pci_read_config_word(pci, reg, &retval); | |
496 | return (retval); | |
497 | } | |
498 | case 4: | |
499 | { | |
500 | uint32_t retval; | |
501 | pci_read_config_dword(pci, reg, &retval); | |
502 | return (retval); | |
503 | } | |
504 | default: | |
505 | panic("ahd_pci_read_config: Read size too big"); | |
506 | /* NOTREACHED */ | |
507 | return (0); | |
508 | } | |
509 | } | |
510 | ||
511 | void | |
512 | ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width) | |
513 | { | |
514 | switch (width) { | |
515 | case 1: | |
516 | pci_write_config_byte(pci, reg, value); | |
517 | break; | |
518 | case 2: | |
519 | pci_write_config_word(pci, reg, value); | |
520 | break; | |
521 | case 4: | |
522 | pci_write_config_dword(pci, reg, value); | |
523 | break; | |
524 | default: | |
525 | panic("ahd_pci_write_config: Write size too big"); | |
526 | /* NOTREACHED */ | |
527 | } | |
528 | } | |
529 | ||
1da177e4 | 530 | /****************************** Inlines ***************************************/ |
be0d6768 | 531 | static void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*); |
1da177e4 | 532 | |
be0d6768 | 533 | static void |
1da177e4 LT |
534 | ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb) |
535 | { | |
73a25462 | 536 | struct scsi_cmnd *cmd; |
1da177e4 LT |
537 | |
538 | cmd = scb->io_ctx; | |
1da177e4 | 539 | ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE); |
4c688fc7 | 540 | scsi_dma_unmap(cmd); |
1da177e4 LT |
541 | } |
542 | ||
543 | /******************************** Macros **************************************/ | |
544 | #define BUILD_SCSIID(ahd, cmd) \ | |
422c0d61 | 545 | (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id) |
1da177e4 | 546 | |
1da177e4 LT |
547 | /* |
548 | * Return a string describing the driver. | |
549 | */ | |
550 | static const char * | |
551 | ahd_linux_info(struct Scsi_Host *host) | |
552 | { | |
553 | static char buffer[512]; | |
554 | char ahd_info[256]; | |
555 | char *bp; | |
556 | struct ahd_softc *ahd; | |
557 | ||
558 | bp = &buffer[0]; | |
559 | ahd = *(struct ahd_softc **)host->hostdata; | |
560 | memset(bp, 0, sizeof(buffer)); | |
980b306a DV |
561 | strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev " AIC79XX_DRIVER_VERSION "\n" |
562 | " <"); | |
1da177e4 | 563 | strcat(bp, ahd->description); |
980b306a DV |
564 | strcat(bp, ">\n" |
565 | " "); | |
1da177e4 LT |
566 | ahd_controller_info(ahd, ahd_info); |
567 | strcat(bp, ahd_info); | |
1da177e4 LT |
568 | |
569 | return (bp); | |
570 | } | |
571 | ||
572 | /* | |
573 | * Queue an SCB to the controller. | |
574 | */ | |
575 | static int | |
f281233d | 576 | ahd_linux_queue_lck(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *)) |
1da177e4 LT |
577 | { |
578 | struct ahd_softc *ahd; | |
73a25462 | 579 | struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device); |
4065a413 | 580 | int rtn = SCSI_MLQUEUE_HOST_BUSY; |
1da177e4 LT |
581 | |
582 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
583 | ||
7b22da38 HR |
584 | cmd->scsi_done = scsi_done; |
585 | cmd->result = CAM_REQ_INPROG << 16; | |
586 | rtn = ahd_linux_run_command(ahd, dev, cmd); | |
1da177e4 | 587 | |
4065a413 | 588 | return rtn; |
1da177e4 LT |
589 | } |
590 | ||
f281233d JG |
591 | static DEF_SCSI_QCMD(ahd_linux_queue) |
592 | ||
be0d6768 | 593 | static struct scsi_target ** |
73a25462 HR |
594 | ahd_linux_target_in_softc(struct scsi_target *starget) |
595 | { | |
596 | struct ahd_softc *ahd = | |
597 | *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); | |
598 | unsigned int target_offset; | |
599 | ||
600 | target_offset = starget->id; | |
601 | if (starget->channel != 0) | |
602 | target_offset += 8; | |
603 | ||
604 | return &ahd->platform_data->starget[target_offset]; | |
605 | } | |
606 | ||
1da177e4 | 607 | static int |
73a25462 | 608 | ahd_linux_target_alloc(struct scsi_target *starget) |
1da177e4 | 609 | { |
73a25462 HR |
610 | struct ahd_softc *ahd = |
611 | *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); | |
986a25f9 | 612 | struct seeprom_config *sc = ahd->seep_config; |
73a25462 HR |
613 | unsigned long flags; |
614 | struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); | |
73a25462 HR |
615 | struct ahd_devinfo devinfo; |
616 | struct ahd_initiator_tinfo *tinfo; | |
617 | struct ahd_tmode_tstate *tstate; | |
618 | char channel = starget->channel + 'A'; | |
1da177e4 | 619 | |
73a25462 HR |
620 | ahd_lock(ahd, &flags); |
621 | ||
622 | BUG_ON(*ahd_targp != NULL); | |
623 | ||
624 | *ahd_targp = starget; | |
73a25462 | 625 | |
986a25f9 HR |
626 | if (sc) { |
627 | int flags = sc->device_flags[starget->id]; | |
628 | ||
629 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
630 | starget->id, &tstate); | |
631 | ||
632 | if ((flags & CFPACKETIZED) == 0) { | |
ea443190 JB |
633 | /* don't negotiate packetized (IU) transfers */ |
634 | spi_max_iu(starget) = 0; | |
986a25f9 HR |
635 | } else { |
636 | if ((ahd->features & AHD_RTI) == 0) | |
637 | spi_rti(starget) = 0; | |
638 | } | |
639 | ||
640 | if ((flags & CFQAS) == 0) | |
ea443190 | 641 | spi_max_qas(starget) = 0; |
986a25f9 HR |
642 | |
643 | /* Transinfo values have been set to BIOS settings */ | |
644 | spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0; | |
645 | spi_min_period(starget) = tinfo->user.period; | |
646 | spi_max_offset(starget) = tinfo->user.offset; | |
647 | } | |
648 | ||
73a25462 HR |
649 | tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, |
650 | starget->id, &tstate); | |
651 | ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id, | |
652 | CAM_LUN_WILDCARD, channel, | |
653 | ROLE_INITIATOR); | |
73a25462 HR |
654 | ahd_set_syncrate(ahd, &devinfo, 0, 0, 0, |
655 | AHD_TRANS_GOAL, /*paused*/FALSE); | |
656 | ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, | |
657 | AHD_TRANS_GOAL, /*paused*/FALSE); | |
658 | ahd_unlock(ahd, &flags); | |
659 | ||
660 | return 0; | |
661 | } | |
662 | ||
663 | static void | |
664 | ahd_linux_target_destroy(struct scsi_target *starget) | |
665 | { | |
666 | struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); | |
667 | ||
668 | *ahd_targp = NULL; | |
1da177e4 LT |
669 | } |
670 | ||
671 | static int | |
73a25462 | 672 | ahd_linux_slave_alloc(struct scsi_device *sdev) |
1da177e4 | 673 | { |
73a25462 HR |
674 | struct ahd_softc *ahd = |
675 | *((struct ahd_softc **)sdev->host->hostdata); | |
73a25462 | 676 | struct ahd_linux_device *dev; |
1da177e4 | 677 | |
1da177e4 | 678 | if (bootverbose) |
48813cf9 | 679 | printk("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id); |
73a25462 | 680 | |
73a25462 HR |
681 | dev = scsi_transport_device_data(sdev); |
682 | memset(dev, 0, sizeof(*dev)); | |
683 | ||
684 | /* | |
685 | * We start out life using untagged | |
686 | * transactions of which we allow one. | |
687 | */ | |
688 | dev->openings = 1; | |
689 | ||
1da177e4 | 690 | /* |
73a25462 HR |
691 | * Set maxtags to 0. This will be changed if we |
692 | * later determine that we are dealing with | |
693 | * a tagged queuing capable device. | |
1da177e4 | 694 | */ |
73a25462 HR |
695 | dev->maxtags = 0; |
696 | ||
1da177e4 LT |
697 | return (0); |
698 | } | |
699 | ||
73a25462 HR |
700 | static int |
701 | ahd_linux_slave_configure(struct scsi_device *sdev) | |
702 | { | |
703 | struct ahd_softc *ahd; | |
704 | ||
705 | ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
706 | if (bootverbose) | |
017560fc | 707 | sdev_printk(KERN_INFO, sdev, "Slave Configure\n"); |
73a25462 HR |
708 | |
709 | ahd_linux_device_queue_depth(sdev); | |
710 | ||
711 | /* Initial Domain Validation */ | |
712 | if (!spi_initial_dv(sdev->sdev_target)) | |
713 | spi_dv_device(sdev); | |
714 | ||
715 | return 0; | |
716 | } | |
717 | ||
1da177e4 LT |
718 | #if defined(__i386__) |
719 | /* | |
720 | * Return the disk geometry for the given SCSI device. | |
721 | */ | |
722 | static int | |
1da177e4 LT |
723 | ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
724 | sector_t capacity, int geom[]) | |
725 | { | |
726 | uint8_t *bh; | |
1da177e4 LT |
727 | int heads; |
728 | int sectors; | |
729 | int cylinders; | |
730 | int ret; | |
731 | int extended; | |
732 | struct ahd_softc *ahd; | |
733 | ||
734 | ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
735 | ||
1da177e4 | 736 | bh = scsi_bios_ptable(bdev); |
1da177e4 LT |
737 | if (bh) { |
738 | ret = scsi_partsize(bh, capacity, | |
739 | &geom[2], &geom[0], &geom[1]); | |
1da177e4 | 740 | kfree(bh); |
1da177e4 LT |
741 | if (ret != -1) |
742 | return (ret); | |
743 | } | |
744 | heads = 64; | |
745 | sectors = 32; | |
746 | cylinders = aic_sector_div(capacity, heads, sectors); | |
747 | ||
748 | if (aic79xx_extended != 0) | |
749 | extended = 1; | |
750 | else | |
751 | extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0; | |
752 | if (extended && cylinders >= 1024) { | |
753 | heads = 255; | |
754 | sectors = 63; | |
755 | cylinders = aic_sector_div(capacity, heads, sectors); | |
756 | } | |
757 | geom[0] = heads; | |
758 | geom[1] = sectors; | |
759 | geom[2] = cylinders; | |
760 | return (0); | |
761 | } | |
762 | #endif | |
763 | ||
764 | /* | |
765 | * Abort the current SCSI command(s). | |
766 | */ | |
767 | static int | |
73a25462 HR |
768 | ahd_linux_abort(struct scsi_cmnd *cmd) |
769 | { | |
770 | int error; | |
6902f416 HR |
771 | |
772 | error = ahd_linux_queue_abort_cmd(cmd); | |
73a25462 | 773 | |
73a25462 HR |
774 | return error; |
775 | } | |
776 | ||
777 | /* | |
778 | * Attempt to send a target reset message to the device that timed out. | |
779 | */ | |
780 | static int | |
781 | ahd_linux_dev_reset(struct scsi_cmnd *cmd) | |
782 | { | |
6902f416 HR |
783 | struct ahd_softc *ahd; |
784 | struct ahd_linux_device *dev; | |
785 | struct scb *reset_scb; | |
786 | u_int cdb_byte; | |
787 | int retval = SUCCESS; | |
788 | int paused; | |
789 | int wait; | |
790 | struct ahd_initiator_tinfo *tinfo; | |
791 | struct ahd_tmode_tstate *tstate; | |
792 | unsigned long flags; | |
6e9a4738 | 793 | DECLARE_COMPLETION_ONSTACK(done); |
73a25462 | 794 | |
6902f416 HR |
795 | reset_scb = NULL; |
796 | paused = FALSE; | |
797 | wait = FALSE; | |
798 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
799 | ||
800 | scmd_printk(KERN_INFO, cmd, | |
801 | "Attempting to queue a TARGET RESET message:"); | |
802 | ||
48813cf9 | 803 | printk("CDB:"); |
6902f416 | 804 | for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) |
48813cf9 PE |
805 | printk(" 0x%x", cmd->cmnd[cdb_byte]); |
806 | printk("\n"); | |
6902f416 HR |
807 | |
808 | /* | |
809 | * Determine if we currently own this command. | |
810 | */ | |
811 | dev = scsi_transport_device_data(cmd->device); | |
812 | ||
813 | if (dev == NULL) { | |
814 | /* | |
815 | * No target device for this command exists, | |
816 | * so we must not still own the command. | |
817 | */ | |
818 | scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); | |
819 | return SUCCESS; | |
820 | } | |
821 | ||
822 | /* | |
823 | * Generate us a new SCB | |
824 | */ | |
825 | reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX); | |
826 | if (!reset_scb) { | |
827 | scmd_printk(KERN_INFO, cmd, "No SCB available\n"); | |
828 | return FAILED; | |
829 | } | |
830 | ||
831 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
832 | cmd->device->id, &tstate); | |
833 | reset_scb->io_ctx = cmd; | |
834 | reset_scb->platform_data->dev = dev; | |
835 | reset_scb->sg_count = 0; | |
836 | ahd_set_residual(reset_scb, 0); | |
837 | ahd_set_sense_residual(reset_scb, 0); | |
838 | reset_scb->platform_data->xfer_len = 0; | |
839 | reset_scb->hscb->control = 0; | |
840 | reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd); | |
841 | reset_scb->hscb->lun = cmd->device->lun; | |
842 | reset_scb->hscb->cdb_len = 0; | |
843 | reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET; | |
844 | reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE; | |
845 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { | |
846 | reset_scb->flags |= SCB_PACKETIZED; | |
847 | } else { | |
848 | reset_scb->hscb->control |= MK_MESSAGE; | |
849 | } | |
850 | dev->openings--; | |
851 | dev->active++; | |
852 | dev->commands_issued++; | |
853 | ||
854 | ahd_lock(ahd, &flags); | |
855 | ||
856 | LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links); | |
857 | ahd_queue_scb(ahd, reset_scb); | |
858 | ||
859 | ahd->platform_data->eh_done = &done; | |
860 | ahd_unlock(ahd, &flags); | |
861 | ||
48813cf9 | 862 | printk("%s: Device reset code sleeping\n", ahd_name(ahd)); |
6902f416 HR |
863 | if (!wait_for_completion_timeout(&done, 5 * HZ)) { |
864 | ahd_lock(ahd, &flags); | |
865 | ahd->platform_data->eh_done = NULL; | |
866 | ahd_unlock(ahd, &flags); | |
48813cf9 | 867 | printk("%s: Device reset timer expired (active %d)\n", |
6902f416 HR |
868 | ahd_name(ahd), dev->active); |
869 | retval = FAILED; | |
870 | } | |
48813cf9 | 871 | printk("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval); |
6902f416 HR |
872 | |
873 | return (retval); | |
73a25462 HR |
874 | } |
875 | ||
876 | /* | |
877 | * Reset the SCSI bus. | |
878 | */ | |
879 | static int | |
880 | ahd_linux_bus_reset(struct scsi_cmnd *cmd) | |
1da177e4 LT |
881 | { |
882 | struct ahd_softc *ahd; | |
73a25462 | 883 | int found; |
f41b5cec | 884 | unsigned long flags; |
1da177e4 | 885 | |
1da177e4 | 886 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; |
73a25462 HR |
887 | #ifdef AHD_DEBUG |
888 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) | |
48813cf9 | 889 | printk("%s: Bus reset called for cmd %p\n", |
73a25462 HR |
890 | ahd_name(ahd), cmd); |
891 | #endif | |
f41b5cec HR |
892 | ahd_lock(ahd, &flags); |
893 | ||
422c0d61 | 894 | found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A', |
73a25462 | 895 | /*initiate reset*/TRUE); |
f41b5cec | 896 | ahd_unlock(ahd, &flags); |
1da177e4 | 897 | |
73a25462 | 898 | if (bootverbose) |
48813cf9 | 899 | printk("%s: SCSI bus reset delivered. " |
73a25462 | 900 | "%d SCBs aborted.\n", ahd_name(ahd), found); |
1da177e4 | 901 | |
73a25462 HR |
902 | return (SUCCESS); |
903 | } | |
1da177e4 | 904 | |
73a25462 HR |
905 | struct scsi_host_template aic79xx_driver_template = { |
906 | .module = THIS_MODULE, | |
907 | .name = "aic79xx", | |
85a46523 | 908 | .proc_name = "aic79xx", |
f6f83a6c AV |
909 | .show_info = ahd_linux_show_info, |
910 | .write_info = ahd_proc_write_seeprom, | |
73a25462 HR |
911 | .info = ahd_linux_info, |
912 | .queuecommand = ahd_linux_queue, | |
913 | .eh_abort_handler = ahd_linux_abort, | |
914 | .eh_device_reset_handler = ahd_linux_dev_reset, | |
915 | .eh_bus_reset_handler = ahd_linux_bus_reset, | |
916 | #if defined(__i386__) | |
917 | .bios_param = ahd_linux_biosparam, | |
918 | #endif | |
919 | .can_queue = AHD_MAX_QUEUE, | |
920 | .this_id = -1, | |
80f1443c | 921 | .max_sectors = 8192, |
73a25462 HR |
922 | .cmd_per_lun = 2, |
923 | .use_clustering = ENABLE_CLUSTERING, | |
924 | .slave_alloc = ahd_linux_slave_alloc, | |
925 | .slave_configure = ahd_linux_slave_configure, | |
73a25462 HR |
926 | .target_alloc = ahd_linux_target_alloc, |
927 | .target_destroy = ahd_linux_target_destroy, | |
2ecb204d | 928 | .use_blk_tags = 1, |
73a25462 | 929 | }; |
1da177e4 | 930 | |
73a25462 HR |
931 | /******************************** Bus DMA *************************************/ |
932 | int | |
933 | ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent, | |
934 | bus_size_t alignment, bus_size_t boundary, | |
935 | dma_addr_t lowaddr, dma_addr_t highaddr, | |
936 | bus_dma_filter_t *filter, void *filterarg, | |
937 | bus_size_t maxsize, int nsegments, | |
938 | bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag) | |
939 | { | |
940 | bus_dma_tag_t dmat; | |
941 | ||
48813cf9 | 942 | dmat = kmalloc(sizeof(*dmat), GFP_ATOMIC); |
73a25462 HR |
943 | if (dmat == NULL) |
944 | return (ENOMEM); | |
1da177e4 | 945 | |
1da177e4 | 946 | /* |
73a25462 HR |
947 | * Linux is very simplistic about DMA memory. For now don't |
948 | * maintain all specification information. Once Linux supplies | |
949 | * better facilities for doing these operations, or the | |
950 | * needs of this particular driver change, we might need to do | |
951 | * more here. | |
1da177e4 | 952 | */ |
73a25462 HR |
953 | dmat->alignment = alignment; |
954 | dmat->boundary = boundary; | |
955 | dmat->maxsize = maxsize; | |
956 | *ret_tag = dmat; | |
957 | return (0); | |
958 | } | |
1da177e4 | 959 | |
73a25462 HR |
960 | void |
961 | ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat) | |
962 | { | |
48813cf9 | 963 | kfree(dmat); |
73a25462 | 964 | } |
1da177e4 | 965 | |
73a25462 HR |
966 | int |
967 | ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr, | |
968 | int flags, bus_dmamap_t *mapp) | |
969 | { | |
970 | *vaddr = pci_alloc_consistent(ahd->dev_softc, | |
971 | dmat->maxsize, mapp); | |
972 | if (*vaddr == NULL) | |
973 | return (ENOMEM); | |
974 | return(0); | |
975 | } | |
1da177e4 | 976 | |
73a25462 HR |
977 | void |
978 | ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat, | |
979 | void* vaddr, bus_dmamap_t map) | |
980 | { | |
981 | pci_free_consistent(ahd->dev_softc, dmat->maxsize, | |
982 | vaddr, map); | |
983 | } | |
984 | ||
985 | int | |
986 | ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map, | |
987 | void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb, | |
988 | void *cb_arg, int flags) | |
989 | { | |
1da177e4 | 990 | /* |
73a25462 HR |
991 | * Assume for now that this will only be used during |
992 | * initialization and not for per-transaction buffer mapping. | |
1da177e4 | 993 | */ |
73a25462 | 994 | bus_dma_segment_t stack_sg; |
1da177e4 | 995 | |
73a25462 HR |
996 | stack_sg.ds_addr = map; |
997 | stack_sg.ds_len = dmat->maxsize; | |
998 | cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); | |
999 | return (0); | |
1000 | } | |
1da177e4 | 1001 | |
73a25462 HR |
1002 | void |
1003 | ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
1004 | { | |
1005 | } | |
1da177e4 | 1006 | |
73a25462 HR |
1007 | int |
1008 | ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
1009 | { | |
1010 | /* Nothing to do */ | |
1011 | return (0); | |
1012 | } | |
1da177e4 | 1013 | |
73a25462 | 1014 | /********************* Platform Dependent Functions ***************************/ |
73a25462 HR |
1015 | static void |
1016 | ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value) | |
1017 | { | |
1da177e4 | 1018 | |
73a25462 | 1019 | if ((instance >= 0) |
6391a113 | 1020 | && (instance < ARRAY_SIZE(aic79xx_iocell_info))) { |
73a25462 HR |
1021 | uint8_t *iocell_info; |
1022 | ||
1023 | iocell_info = (uint8_t*)&aic79xx_iocell_info[instance]; | |
1024 | iocell_info[index] = value & 0xFFFF; | |
1025 | if (bootverbose) | |
48813cf9 | 1026 | printk("iocell[%d:%ld] = %d\n", instance, index, value); |
1da177e4 | 1027 | } |
73a25462 | 1028 | } |
1da177e4 | 1029 | |
73a25462 HR |
1030 | static void |
1031 | ahd_linux_setup_tag_info_global(char *p) | |
1032 | { | |
1033 | int tags, i, j; | |
1da177e4 | 1034 | |
73a25462 | 1035 | tags = simple_strtoul(p + 1, NULL, 0) & 0xff; |
48813cf9 | 1036 | printk("Setting Global Tags= %d\n", tags); |
73a25462 | 1037 | |
6391a113 | 1038 | for (i = 0; i < ARRAY_SIZE(aic79xx_tag_info); i++) { |
73a25462 HR |
1039 | for (j = 0; j < AHD_NUM_TARGETS; j++) { |
1040 | aic79xx_tag_info[i].tag_commands[j] = tags; | |
1da177e4 | 1041 | } |
1da177e4 | 1042 | } |
1da177e4 LT |
1043 | } |
1044 | ||
1da177e4 | 1045 | static void |
73a25462 | 1046 | ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) |
1da177e4 | 1047 | { |
1da177e4 | 1048 | |
73a25462 | 1049 | if ((instance >= 0) && (targ >= 0) |
6391a113 | 1050 | && (instance < ARRAY_SIZE(aic79xx_tag_info)) |
73a25462 HR |
1051 | && (targ < AHD_NUM_TARGETS)) { |
1052 | aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; | |
1053 | if (bootverbose) | |
48813cf9 | 1054 | printk("tag_info[%d:%d] = %d\n", instance, targ, value); |
1da177e4 | 1055 | } |
1da177e4 LT |
1056 | } |
1057 | ||
1ff92730 CH |
1058 | static char * |
1059 | ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth, | |
1060 | void (*callback)(u_long, int, int, int32_t), | |
1061 | u_long callback_arg) | |
1062 | { | |
1063 | char *tok_end; | |
1064 | char *tok_end2; | |
1065 | int i; | |
1066 | int instance; | |
1067 | int targ; | |
1068 | int done; | |
1069 | char tok_list[] = {'.', ',', '{', '}', '\0'}; | |
1070 | ||
1071 | /* All options use a ':' name/arg separator */ | |
1072 | if (*opt_arg != ':') | |
1073 | return (opt_arg); | |
1074 | opt_arg++; | |
1075 | instance = -1; | |
1076 | targ = -1; | |
1077 | done = FALSE; | |
1078 | /* | |
1079 | * Restore separator that may be in | |
1080 | * the middle of our option argument. | |
1081 | */ | |
1082 | tok_end = strchr(opt_arg, '\0'); | |
1083 | if (tok_end < end) | |
1084 | *tok_end = ','; | |
1085 | while (!done) { | |
1086 | switch (*opt_arg) { | |
1087 | case '{': | |
1088 | if (instance == -1) { | |
1089 | instance = 0; | |
1090 | } else { | |
1091 | if (depth > 1) { | |
1092 | if (targ == -1) | |
1093 | targ = 0; | |
1094 | } else { | |
48813cf9 | 1095 | printk("Malformed Option %s\n", |
1ff92730 CH |
1096 | opt_name); |
1097 | done = TRUE; | |
1098 | } | |
1099 | } | |
1100 | opt_arg++; | |
1101 | break; | |
1102 | case '}': | |
1103 | if (targ != -1) | |
1104 | targ = -1; | |
1105 | else if (instance != -1) | |
1106 | instance = -1; | |
1107 | opt_arg++; | |
1108 | break; | |
1109 | case ',': | |
1110 | case '.': | |
1111 | if (instance == -1) | |
1112 | done = TRUE; | |
1113 | else if (targ >= 0) | |
1114 | targ++; | |
1115 | else if (instance >= 0) | |
1116 | instance++; | |
1117 | opt_arg++; | |
1118 | break; | |
1119 | case '\0': | |
1120 | done = TRUE; | |
1121 | break; | |
1122 | default: | |
1123 | tok_end = end; | |
1124 | for (i = 0; tok_list[i]; i++) { | |
1125 | tok_end2 = strchr(opt_arg, tok_list[i]); | |
1126 | if ((tok_end2) && (tok_end2 < tok_end)) | |
1127 | tok_end = tok_end2; | |
1128 | } | |
1129 | callback(callback_arg, instance, targ, | |
1130 | simple_strtol(opt_arg, NULL, 0)); | |
1131 | opt_arg = tok_end; | |
1132 | break; | |
1133 | } | |
1134 | } | |
1135 | return (opt_arg); | |
1136 | } | |
1137 | ||
1da177e4 | 1138 | /* |
73a25462 HR |
1139 | * Handle Linux boot parameters. This routine allows for assigning a value |
1140 | * to a parameter with a ':' between the parameter and the value. | |
1141 | * ie. aic79xx=stpwlev:1,extended | |
1da177e4 LT |
1142 | */ |
1143 | static int | |
73a25462 | 1144 | aic79xx_setup(char *s) |
1da177e4 | 1145 | { |
73a25462 HR |
1146 | int i, n; |
1147 | char *p; | |
1148 | char *end; | |
1da177e4 | 1149 | |
980b306a | 1150 | static const struct { |
73a25462 HR |
1151 | const char *name; |
1152 | uint32_t *flag; | |
1153 | } options[] = { | |
1154 | { "extended", &aic79xx_extended }, | |
1155 | { "no_reset", &aic79xx_no_reset }, | |
1156 | { "verbose", &aic79xx_verbose }, | |
1157 | { "allow_memio", &aic79xx_allow_memio}, | |
1da177e4 | 1158 | #ifdef AHD_DEBUG |
73a25462 | 1159 | { "debug", &ahd_debug }, |
1da177e4 | 1160 | #endif |
73a25462 HR |
1161 | { "periodic_otag", &aic79xx_periodic_otag }, |
1162 | { "pci_parity", &aic79xx_pci_parity }, | |
1163 | { "seltime", &aic79xx_seltime }, | |
1164 | { "tag_info", NULL }, | |
1165 | { "global_tag_depth", NULL}, | |
1166 | { "slewrate", NULL }, | |
1167 | { "precomp", NULL }, | |
1168 | { "amplitude", NULL }, | |
3fb08612 | 1169 | { "slowcrc", &aic79xx_slowcrc }, |
73a25462 | 1170 | }; |
1da177e4 | 1171 | |
73a25462 | 1172 | end = strchr(s, '\0'); |
1da177e4 | 1173 | |
73a25462 | 1174 | /* |
6391a113 | 1175 | * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE |
73a25462 | 1176 | * will never be 0 in this case. |
6391a113 TK |
1177 | */ |
1178 | n = 0; | |
73a25462 HR |
1179 | |
1180 | while ((p = strsep(&s, ",.")) != NULL) { | |
1181 | if (*p == '\0') | |
1182 | continue; | |
6391a113 | 1183 | for (i = 0; i < ARRAY_SIZE(options); i++) { |
73a25462 HR |
1184 | |
1185 | n = strlen(options[i].name); | |
1186 | if (strncmp(options[i].name, p, n) == 0) | |
1187 | break; | |
1188 | } | |
6391a113 | 1189 | if (i == ARRAY_SIZE(options)) |
73a25462 HR |
1190 | continue; |
1191 | ||
1192 | if (strncmp(p, "global_tag_depth", n) == 0) { | |
1193 | ahd_linux_setup_tag_info_global(p + n); | |
1194 | } else if (strncmp(p, "tag_info", n) == 0) { | |
1ff92730 | 1195 | s = ahd_parse_brace_option("tag_info", p + n, end, |
73a25462 HR |
1196 | 2, ahd_linux_setup_tag_info, 0); |
1197 | } else if (strncmp(p, "slewrate", n) == 0) { | |
1ff92730 | 1198 | s = ahd_parse_brace_option("slewrate", |
73a25462 HR |
1199 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1200 | AIC79XX_SLEWRATE_INDEX); | |
1201 | } else if (strncmp(p, "precomp", n) == 0) { | |
1ff92730 | 1202 | s = ahd_parse_brace_option("precomp", |
73a25462 HR |
1203 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1204 | AIC79XX_PRECOMP_INDEX); | |
1205 | } else if (strncmp(p, "amplitude", n) == 0) { | |
1ff92730 | 1206 | s = ahd_parse_brace_option("amplitude", |
73a25462 HR |
1207 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1208 | AIC79XX_AMPLITUDE_INDEX); | |
1209 | } else if (p[n] == ':') { | |
1210 | *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); | |
1211 | } else if (!strncmp(p, "verbose", n)) { | |
1212 | *(options[i].flag) = 1; | |
1213 | } else { | |
1214 | *(options[i].flag) ^= 0xFFFFFFFF; | |
1215 | } | |
1216 | } | |
1217 | return 1; | |
1da177e4 LT |
1218 | } |
1219 | ||
73a25462 HR |
1220 | __setup("aic79xx=", aic79xx_setup); |
1221 | ||
1222 | uint32_t aic79xx_verbose; | |
1da177e4 | 1223 | |
1da177e4 | 1224 | int |
73a25462 | 1225 | ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template) |
1da177e4 | 1226 | { |
73a25462 HR |
1227 | char buf[80]; |
1228 | struct Scsi_Host *host; | |
1229 | char *new_name; | |
1230 | u_long s; | |
e7a1ca1d | 1231 | int retval; |
1da177e4 | 1232 | |
73a25462 HR |
1233 | template->name = ahd->description; |
1234 | host = scsi_host_alloc(template, sizeof(struct ahd_softc *)); | |
1235 | if (host == NULL) | |
1da177e4 LT |
1236 | return (ENOMEM); |
1237 | ||
73a25462 | 1238 | *((struct ahd_softc **)host->hostdata) = ahd; |
73a25462 HR |
1239 | ahd->platform_data->host = host; |
1240 | host->can_queue = AHD_MAX_QUEUE; | |
1241 | host->cmd_per_lun = 2; | |
1242 | host->sg_tablesize = AHD_NSEG; | |
1243 | host->this_id = ahd->our_id; | |
1244 | host->irq = ahd->platform_data->irq; | |
1245 | host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1246 | host->max_lun = AHD_NUM_LUNS; | |
1247 | host->max_channel = 0; | |
1248 | host->sg_tablesize = AHD_NSEG; | |
eb221849 | 1249 | ahd_lock(ahd, &s); |
85a46523 | 1250 | ahd_set_unit(ahd, ahd_linux_unit++); |
eb221849 | 1251 | ahd_unlock(ahd, &s); |
73a25462 | 1252 | sprintf(buf, "scsi%d", host->host_no); |
48813cf9 | 1253 | new_name = kmalloc(strlen(buf) + 1, GFP_ATOMIC); |
73a25462 HR |
1254 | if (new_name != NULL) { |
1255 | strcpy(new_name, buf); | |
1256 | ahd_set_name(ahd, new_name); | |
1257 | } | |
1258 | host->unique_id = ahd->unit; | |
1259 | ahd_linux_initialize_scsi_bus(ahd); | |
1260 | ahd_intr_enable(ahd, TRUE); | |
73a25462 HR |
1261 | |
1262 | host->transportt = ahd_linux_transport_template; | |
1263 | ||
e7a1ca1d JJ |
1264 | retval = scsi_add_host(host, &ahd->dev_softc->dev); |
1265 | if (retval) { | |
1266 | printk(KERN_WARNING "aic79xx: scsi_add_host failed\n"); | |
1267 | scsi_host_put(host); | |
1268 | return retval; | |
1269 | } | |
1270 | ||
73a25462 | 1271 | scsi_scan_host(host); |
e7a1ca1d | 1272 | return 0; |
1da177e4 LT |
1273 | } |
1274 | ||
73a25462 HR |
1275 | /* |
1276 | * Place the SCSI bus into a known state by either resetting it, | |
1277 | * or forcing transfer negotiations on the next command to any | |
1278 | * target. | |
1279 | */ | |
1280 | static void | |
1281 | ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd) | |
1da177e4 | 1282 | { |
73a25462 HR |
1283 | u_int target_id; |
1284 | u_int numtarg; | |
eb221849 | 1285 | unsigned long s; |
1da177e4 | 1286 | |
73a25462 HR |
1287 | target_id = 0; |
1288 | numtarg = 0; | |
1289 | ||
1290 | if (aic79xx_no_reset != 0) | |
1291 | ahd->flags &= ~AHD_RESET_BUS_A; | |
1292 | ||
1293 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) | |
1294 | ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE); | |
1295 | else | |
1296 | numtarg = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1da177e4 | 1297 | |
eb221849 HR |
1298 | ahd_lock(ahd, &s); |
1299 | ||
1da177e4 | 1300 | /* |
73a25462 HR |
1301 | * Force negotiation to async for all targets that |
1302 | * will not see an initial bus reset. | |
1da177e4 | 1303 | */ |
73a25462 HR |
1304 | for (; target_id < numtarg; target_id++) { |
1305 | struct ahd_devinfo devinfo; | |
1306 | struct ahd_initiator_tinfo *tinfo; | |
1307 | struct ahd_tmode_tstate *tstate; | |
1308 | ||
1309 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
1310 | target_id, &tstate); | |
1311 | ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, | |
1312 | CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); | |
1313 | ahd_update_neg_request(ahd, &devinfo, tstate, | |
1314 | tinfo, AHD_NEG_ALWAYS); | |
1315 | } | |
eb221849 | 1316 | ahd_unlock(ahd, &s); |
73a25462 HR |
1317 | /* Give the bus some time to recover */ |
1318 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) { | |
1319 | ahd_freeze_simq(ahd); | |
eb221849 HR |
1320 | msleep(AIC79XX_RESET_DELAY); |
1321 | ahd_release_simq(ahd); | |
73a25462 | 1322 | } |
1da177e4 LT |
1323 | } |
1324 | ||
1325 | int | |
73a25462 | 1326 | ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) |
1da177e4 | 1327 | { |
73a25462 | 1328 | ahd->platform_data = |
48813cf9 | 1329 | kmalloc(sizeof(struct ahd_platform_data), GFP_ATOMIC); |
73a25462 HR |
1330 | if (ahd->platform_data == NULL) |
1331 | return (ENOMEM); | |
1332 | memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); | |
1333 | ahd->platform_data->irq = AHD_LINUX_NOIRQ; | |
1334 | ahd_lockinit(ahd); | |
73a25462 | 1335 | ahd->seltime = (aic79xx_seltime & 0x3) << 4; |
1da177e4 LT |
1336 | return (0); |
1337 | } | |
1338 | ||
73a25462 HR |
1339 | void |
1340 | ahd_platform_free(struct ahd_softc *ahd) | |
1da177e4 | 1341 | { |
73a25462 | 1342 | struct scsi_target *starget; |
f89d0a4e | 1343 | int i; |
1da177e4 | 1344 | |
73a25462 | 1345 | if (ahd->platform_data != NULL) { |
73a25462 HR |
1346 | /* destroy all of the device and target objects */ |
1347 | for (i = 0; i < AHD_NUM_TARGETS; i++) { | |
1348 | starget = ahd->platform_data->starget[i]; | |
1349 | if (starget != NULL) { | |
73a25462 HR |
1350 | ahd->platform_data->starget[i] = NULL; |
1351 | } | |
1352 | } | |
1da177e4 | 1353 | |
73a25462 HR |
1354 | if (ahd->platform_data->irq != AHD_LINUX_NOIRQ) |
1355 | free_irq(ahd->platform_data->irq, ahd); | |
1356 | if (ahd->tags[0] == BUS_SPACE_PIO | |
1357 | && ahd->bshs[0].ioport != 0) | |
1358 | release_region(ahd->bshs[0].ioport, 256); | |
1359 | if (ahd->tags[1] == BUS_SPACE_PIO | |
1360 | && ahd->bshs[1].ioport != 0) | |
1361 | release_region(ahd->bshs[1].ioport, 256); | |
1362 | if (ahd->tags[0] == BUS_SPACE_MEMIO | |
1363 | && ahd->bshs[0].maddr != NULL) { | |
1364 | iounmap(ahd->bshs[0].maddr); | |
1365 | release_mem_region(ahd->platform_data->mem_busaddr, | |
1366 | 0x1000); | |
1367 | } | |
97af50f6 JB |
1368 | if (ahd->platform_data->host) |
1369 | scsi_host_put(ahd->platform_data->host); | |
1370 | ||
48813cf9 | 1371 | kfree(ahd->platform_data); |
73a25462 | 1372 | } |
1da177e4 LT |
1373 | } |
1374 | ||
73a25462 HR |
1375 | void |
1376 | ahd_platform_init(struct ahd_softc *ahd) | |
1da177e4 | 1377 | { |
73a25462 HR |
1378 | /* |
1379 | * Lookup and commit any modified IO Cell options. | |
1380 | */ | |
6391a113 | 1381 | if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) { |
980b306a | 1382 | const struct ahd_linux_iocell_opts *iocell_opts; |
1da177e4 | 1383 | |
73a25462 HR |
1384 | iocell_opts = &aic79xx_iocell_info[ahd->unit]; |
1385 | if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP) | |
1386 | AHD_SET_PRECOMP(ahd, iocell_opts->precomp); | |
1387 | if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE) | |
1388 | AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate); | |
1389 | if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE) | |
1390 | AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude); | |
1da177e4 | 1391 | } |
1da177e4 | 1392 | |
1da177e4 LT |
1393 | } |
1394 | ||
73a25462 HR |
1395 | void |
1396 | ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1397 | { |
73a25462 HR |
1398 | ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), |
1399 | SCB_GET_CHANNEL(ahd, scb), | |
1400 | SCB_GET_LUN(scb), SCB_LIST_NULL, | |
1401 | ROLE_UNKNOWN, CAM_REQUEUE_REQ); | |
1da177e4 LT |
1402 | } |
1403 | ||
73a25462 | 1404 | void |
f89d0a4e HR |
1405 | ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, |
1406 | struct ahd_devinfo *devinfo, ahd_queue_alg alg) | |
1da177e4 | 1407 | { |
73a25462 | 1408 | struct ahd_linux_device *dev; |
73a25462 HR |
1409 | int was_queuing; |
1410 | int now_queuing; | |
1da177e4 | 1411 | |
73a25462 HR |
1412 | if (sdev == NULL) |
1413 | return; | |
1da177e4 | 1414 | |
73a25462 | 1415 | dev = scsi_transport_device_data(sdev); |
1da177e4 | 1416 | |
73a25462 HR |
1417 | if (dev == NULL) |
1418 | return; | |
1419 | was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); | |
1420 | switch (alg) { | |
1421 | default: | |
1422 | case AHD_QUEUE_NONE: | |
1423 | now_queuing = 0; | |
1424 | break; | |
1425 | case AHD_QUEUE_BASIC: | |
1426 | now_queuing = AHD_DEV_Q_BASIC; | |
1427 | break; | |
1428 | case AHD_QUEUE_TAGGED: | |
1429 | now_queuing = AHD_DEV_Q_TAGGED; | |
1430 | break; | |
1431 | } | |
1432 | if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0 | |
1433 | && (was_queuing != now_queuing) | |
1434 | && (dev->active != 0)) { | |
1435 | dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY; | |
1436 | dev->qfrozen++; | |
1da177e4 | 1437 | } |
1da177e4 | 1438 | |
73a25462 HR |
1439 | dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG); |
1440 | if (now_queuing) { | |
1441 | u_int usertags; | |
1da177e4 | 1442 | |
73a25462 HR |
1443 | usertags = ahd_linux_user_tagdepth(ahd, devinfo); |
1444 | if (!was_queuing) { | |
1445 | /* | |
25985edc | 1446 | * Start out aggressively and allow our |
73a25462 HR |
1447 | * dynamic queue depth algorithm to take |
1448 | * care of the rest. | |
1449 | */ | |
1450 | dev->maxtags = usertags; | |
1451 | dev->openings = dev->maxtags - dev->active; | |
1da177e4 | 1452 | } |
73a25462 HR |
1453 | if (dev->maxtags == 0) { |
1454 | /* | |
1455 | * Queueing is disabled by the user. | |
1456 | */ | |
1457 | dev->openings = 1; | |
1458 | } else if (alg == AHD_QUEUE_TAGGED) { | |
1459 | dev->flags |= AHD_DEV_Q_TAGGED; | |
1460 | if (aic79xx_periodic_otag != 0) | |
1461 | dev->flags |= AHD_DEV_PERIODIC_OTAG; | |
1462 | } else | |
1463 | dev->flags |= AHD_DEV_Q_BASIC; | |
1464 | } else { | |
1465 | /* We can only have one opening. */ | |
1466 | dev->maxtags = 0; | |
1467 | dev->openings = 1 - dev->active; | |
1da177e4 | 1468 | } |
1da177e4 | 1469 | |
73a25462 HR |
1470 | switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { |
1471 | case AHD_DEV_Q_BASIC: | |
73a25462 | 1472 | case AHD_DEV_Q_TAGGED: |
c8b09f6f | 1473 | scsi_adjust_queue_depth(sdev, |
2ecb204d | 1474 | dev->openings + dev->active); |
73a25462 HR |
1475 | break; |
1476 | default: | |
1da177e4 | 1477 | /* |
73a25462 HR |
1478 | * We allow the OS to queue 2 untagged transactions to |
1479 | * us at any time even though we can only execute them | |
1480 | * serially on the controller/device. This should | |
1481 | * remove some latency. | |
1da177e4 | 1482 | */ |
c8b09f6f | 1483 | scsi_adjust_queue_depth(sdev, 1); |
73a25462 | 1484 | break; |
1da177e4 | 1485 | } |
1da177e4 LT |
1486 | } |
1487 | ||
73a25462 HR |
1488 | int |
1489 | ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, | |
1490 | int lun, u_int tag, role_t role, uint32_t status) | |
1da177e4 | 1491 | { |
73a25462 | 1492 | return 0; |
1da177e4 LT |
1493 | } |
1494 | ||
73a25462 HR |
1495 | static u_int |
1496 | ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) | |
1da177e4 | 1497 | { |
73a25462 HR |
1498 | static int warned_user; |
1499 | u_int tags; | |
1da177e4 | 1500 | |
73a25462 HR |
1501 | tags = 0; |
1502 | if ((ahd->user_discenable & devinfo->target_mask) != 0) { | |
6391a113 | 1503 | if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) { |
73a25462 HR |
1504 | |
1505 | if (warned_user == 0) { | |
48813cf9 | 1506 | printk(KERN_WARNING |
73a25462 HR |
1507 | "aic79xx: WARNING: Insufficient tag_info instances\n" |
1508 | "aic79xx: for installed controllers. Using defaults\n" | |
1509 | "aic79xx: Please update the aic79xx_tag_info array in\n" | |
1510 | "aic79xx: the aic79xx_osm.c source file.\n"); | |
1511 | warned_user++; | |
1512 | } | |
1513 | tags = AHD_MAX_QUEUE; | |
1514 | } else { | |
1515 | adapter_tag_info_t *tag_info; | |
1516 | ||
1517 | tag_info = &aic79xx_tag_info[ahd->unit]; | |
1518 | tags = tag_info->tag_commands[devinfo->target_offset]; | |
1519 | if (tags > AHD_MAX_QUEUE) | |
1520 | tags = AHD_MAX_QUEUE; | |
1da177e4 LT |
1521 | } |
1522 | } | |
73a25462 | 1523 | return (tags); |
1da177e4 LT |
1524 | } |
1525 | ||
1526 | /* | |
73a25462 | 1527 | * Determines the queue depth for a given device. |
1da177e4 LT |
1528 | */ |
1529 | static void | |
73a25462 | 1530 | ahd_linux_device_queue_depth(struct scsi_device *sdev) |
1da177e4 | 1531 | { |
73a25462 HR |
1532 | struct ahd_devinfo devinfo; |
1533 | u_int tags; | |
1534 | struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
1da177e4 | 1535 | |
73a25462 HR |
1536 | ahd_compile_devinfo(&devinfo, |
1537 | ahd->our_id, | |
1538 | sdev->sdev_target->id, sdev->lun, | |
1539 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1540 | ROLE_INITIATOR); | |
1541 | tags = ahd_linux_user_tagdepth(ahd, &devinfo); | |
1542 | if (tags != 0 && sdev->tagged_supported != 0) { | |
1da177e4 | 1543 | |
f89d0a4e HR |
1544 | ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_TAGGED); |
1545 | ahd_send_async(ahd, devinfo.channel, devinfo.target, | |
1546 | devinfo.lun, AC_TRANSFER_NEG); | |
73a25462 | 1547 | ahd_print_devinfo(ahd, &devinfo); |
48813cf9 | 1548 | printk("Tagged Queuing enabled. Depth %d\n", tags); |
73a25462 | 1549 | } else { |
f89d0a4e HR |
1550 | ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_NONE); |
1551 | ahd_send_async(ahd, devinfo.channel, devinfo.target, | |
1552 | devinfo.lun, AC_TRANSFER_NEG); | |
73a25462 HR |
1553 | } |
1554 | } | |
1da177e4 | 1555 | |
73a25462 HR |
1556 | static int |
1557 | ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, | |
1558 | struct scsi_cmnd *cmd) | |
1559 | { | |
1560 | struct scb *scb; | |
1561 | struct hardware_scb *hscb; | |
1562 | struct ahd_initiator_tinfo *tinfo; | |
1563 | struct ahd_tmode_tstate *tstate; | |
1564 | u_int col_idx; | |
1565 | uint16_t mask; | |
7b22da38 | 1566 | unsigned long flags; |
4c688fc7 | 1567 | int nseg; |
7b22da38 | 1568 | |
2505873a FT |
1569 | nseg = scsi_dma_map(cmd); |
1570 | if (nseg < 0) | |
1571 | return SCSI_MLQUEUE_HOST_BUSY; | |
1572 | ||
7b22da38 | 1573 | ahd_lock(ahd, &flags); |
1da177e4 LT |
1574 | |
1575 | /* | |
73a25462 | 1576 | * Get an scb to use. |
1da177e4 | 1577 | */ |
73a25462 HR |
1578 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
1579 | cmd->device->id, &tstate); | |
1580 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 | |
1581 | || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { | |
1582 | col_idx = AHD_NEVER_COL_IDX; | |
1583 | } else { | |
1584 | col_idx = AHD_BUILD_COL_IDX(cmd->device->id, | |
1585 | cmd->device->lun); | |
1586 | } | |
1587 | if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { | |
1588 | ahd->flags |= AHD_RESOURCE_SHORTAGE; | |
7b22da38 | 1589 | ahd_unlock(ahd, &flags); |
2505873a | 1590 | scsi_dma_unmap(cmd); |
73a25462 | 1591 | return SCSI_MLQUEUE_HOST_BUSY; |
1da177e4 | 1592 | } |
1da177e4 | 1593 | |
73a25462 HR |
1594 | scb->io_ctx = cmd; |
1595 | scb->platform_data->dev = dev; | |
1596 | hscb = scb->hscb; | |
1597 | cmd->host_scribble = (char *)scb; | |
1da177e4 | 1598 | |
73a25462 HR |
1599 | /* |
1600 | * Fill out basics of the HSCB. | |
1601 | */ | |
1602 | hscb->control = 0; | |
1603 | hscb->scsiid = BUILD_SCSIID(ahd, cmd); | |
1604 | hscb->lun = cmd->device->lun; | |
1605 | scb->hscb->task_management = 0; | |
1606 | mask = SCB_GET_TARGET_MASK(ahd, scb); | |
1da177e4 | 1607 | |
73a25462 HR |
1608 | if ((ahd->user_discenable & mask) != 0) |
1609 | hscb->control |= DISCENB; | |
1da177e4 | 1610 | |
73a25462 HR |
1611 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) |
1612 | scb->flags |= SCB_PACKETIZED; | |
1da177e4 | 1613 | |
73a25462 HR |
1614 | if ((tstate->auto_negotiate & mask) != 0) { |
1615 | scb->flags |= SCB_AUTO_NEGOTIATE; | |
1616 | scb->hscb->control |= MK_MESSAGE; | |
1617 | } | |
1618 | ||
1619 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { | |
73a25462 HR |
1620 | if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH |
1621 | && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { | |
1622 | hscb->control |= MSG_ORDERED_TASK; | |
1623 | dev->commands_since_idle_or_otag = 0; | |
1624 | } else { | |
1625 | hscb->control |= MSG_SIMPLE_TASK; | |
1da177e4 | 1626 | } |
73a25462 | 1627 | } |
1da177e4 | 1628 | |
73a25462 HR |
1629 | hscb->cdb_len = cmd->cmd_len; |
1630 | memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); | |
1631 | ||
1632 | scb->platform_data->xfer_len = 0; | |
1633 | ahd_set_residual(scb, 0); | |
1634 | ahd_set_sense_residual(scb, 0); | |
1635 | scb->sg_count = 0; | |
4c688fc7 | 1636 | |
4c688fc7 FT |
1637 | if (nseg > 0) { |
1638 | void *sg = scb->sg_list; | |
1639 | struct scatterlist *cur_seg; | |
1640 | int i; | |
1641 | ||
73a25462 | 1642 | scb->platform_data->xfer_len = 0; |
4c688fc7 FT |
1643 | |
1644 | scsi_for_each_sg(cmd, cur_seg, nseg, i) { | |
73a25462 HR |
1645 | dma_addr_t addr; |
1646 | bus_size_t len; | |
1647 | ||
1648 | addr = sg_dma_address(cur_seg); | |
1649 | len = sg_dma_len(cur_seg); | |
1650 | scb->platform_data->xfer_len += len; | |
1651 | sg = ahd_sg_setup(ahd, scb, sg, addr, len, | |
4c688fc7 | 1652 | i == (nseg - 1)); |
1da177e4 | 1653 | } |
1da177e4 | 1654 | } |
73a25462 HR |
1655 | |
1656 | LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); | |
1657 | dev->openings--; | |
1658 | dev->active++; | |
1659 | dev->commands_issued++; | |
1660 | ||
1661 | if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) | |
1662 | dev->commands_since_idle_or_otag++; | |
1663 | scb->flags |= SCB_ACTIVE; | |
1664 | ahd_queue_scb(ahd, scb); | |
1665 | ||
7b22da38 HR |
1666 | ahd_unlock(ahd, &flags); |
1667 | ||
73a25462 | 1668 | return 0; |
1da177e4 LT |
1669 | } |
1670 | ||
73a25462 HR |
1671 | /* |
1672 | * SCSI controller interrupt handler. | |
1673 | */ | |
1674 | irqreturn_t | |
7d12e780 | 1675 | ahd_linux_isr(int irq, void *dev_id) |
1da177e4 | 1676 | { |
73a25462 HR |
1677 | struct ahd_softc *ahd; |
1678 | u_long flags; | |
1679 | int ours; | |
1da177e4 | 1680 | |
73a25462 HR |
1681 | ahd = (struct ahd_softc *) dev_id; |
1682 | ahd_lock(ahd, &flags); | |
1683 | ours = ahd_intr(ahd); | |
1684 | ahd_unlock(ahd, &flags); | |
1685 | return IRQ_RETVAL(ours); | |
1da177e4 LT |
1686 | } |
1687 | ||
1da177e4 | 1688 | void |
73a25462 | 1689 | ahd_send_async(struct ahd_softc *ahd, char channel, |
f89d0a4e | 1690 | u_int target, u_int lun, ac_code code) |
1da177e4 | 1691 | { |
73a25462 HR |
1692 | switch (code) { |
1693 | case AC_TRANSFER_NEG: | |
1694 | { | |
73a25462 | 1695 | struct scsi_target *starget; |
73a25462 HR |
1696 | struct ahd_initiator_tinfo *tinfo; |
1697 | struct ahd_tmode_tstate *tstate; | |
1698 | unsigned int target_ppr_options; | |
1da177e4 | 1699 | |
73a25462 HR |
1700 | BUG_ON(target == CAM_TARGET_WILDCARD); |
1701 | ||
73a25462 HR |
1702 | tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, |
1703 | target, &tstate); | |
1704 | ||
1705 | /* | |
1706 | * Don't bother reporting results while | |
1707 | * negotiations are still pending. | |
1708 | */ | |
1709 | if (tinfo->curr.period != tinfo->goal.period | |
1710 | || tinfo->curr.width != tinfo->goal.width | |
1711 | || tinfo->curr.offset != tinfo->goal.offset | |
1712 | || tinfo->curr.ppr_options != tinfo->goal.ppr_options) | |
1713 | if (bootverbose == 0) | |
1714 | break; | |
1715 | ||
1716 | /* | |
1717 | * Don't bother reporting results that | |
1718 | * are identical to those last reported. | |
1719 | */ | |
1720 | starget = ahd->platform_data->starget[target]; | |
fc789a93 | 1721 | if (starget == NULL) |
73a25462 HR |
1722 | break; |
1723 | ||
1724 | target_ppr_options = | |
1725 | (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) | |
1726 | + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) | |
3f40d7d6 JB |
1727 | + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) |
1728 | + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) | |
1729 | + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) | |
1730 | + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) | |
88ff29a4 JB |
1731 | + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) |
1732 | + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); | |
73a25462 HR |
1733 | |
1734 | if (tinfo->curr.period == spi_period(starget) | |
1735 | && tinfo->curr.width == spi_width(starget) | |
1736 | && tinfo->curr.offset == spi_offset(starget) | |
1737 | && tinfo->curr.ppr_options == target_ppr_options) | |
1738 | if (bootverbose == 0) | |
1739 | break; | |
1740 | ||
1741 | spi_period(starget) = tinfo->curr.period; | |
1742 | spi_width(starget) = tinfo->curr.width; | |
1743 | spi_offset(starget) = tinfo->curr.offset; | |
a4b53a11 HR |
1744 | spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; |
1745 | spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; | |
1746 | spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; | |
3f40d7d6 JB |
1747 | spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; |
1748 | spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; | |
1749 | spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; | |
1750 | spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; | |
88ff29a4 | 1751 | spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; |
73a25462 | 1752 | spi_display_xfer_agreement(starget); |
1da177e4 | 1753 | break; |
73a25462 HR |
1754 | } |
1755 | case AC_SENT_BDR: | |
1756 | { | |
1757 | WARN_ON(lun != CAM_LUN_WILDCARD); | |
1758 | scsi_report_device_reset(ahd->platform_data->host, | |
1759 | channel - 'A', target); | |
1da177e4 LT |
1760 | break; |
1761 | } | |
73a25462 HR |
1762 | case AC_BUS_RESET: |
1763 | if (ahd->platform_data->host != NULL) { | |
1764 | scsi_report_bus_reset(ahd->platform_data->host, | |
1765 | channel - 'A'); | |
1da177e4 | 1766 | } |
73a25462 HR |
1767 | break; |
1768 | default: | |
1769 | panic("ahd_send_async: Unexpected async event"); | |
1770 | } | |
1da177e4 LT |
1771 | } |
1772 | ||
73a25462 HR |
1773 | /* |
1774 | * Calls the higher level scsi done function and frees the scb. | |
1775 | */ | |
1776 | void | |
1777 | ahd_done(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1778 | { |
73a25462 HR |
1779 | struct scsi_cmnd *cmd; |
1780 | struct ahd_linux_device *dev; | |
1da177e4 | 1781 | |
73a25462 | 1782 | if ((scb->flags & SCB_ACTIVE) == 0) { |
48813cf9 | 1783 | printk("SCB %d done'd twice\n", SCB_GET_TAG(scb)); |
73a25462 HR |
1784 | ahd_dump_card_state(ahd); |
1785 | panic("Stopping for safety"); | |
1da177e4 | 1786 | } |
73a25462 HR |
1787 | LIST_REMOVE(scb, pending_links); |
1788 | cmd = scb->io_ctx; | |
1789 | dev = scb->platform_data->dev; | |
1790 | dev->active--; | |
1791 | dev->openings++; | |
1792 | if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) { | |
1793 | cmd->result &= ~(CAM_DEV_QFRZN << 16); | |
1794 | dev->qfrozen--; | |
1795 | } | |
1796 | ahd_linux_unmap_scb(ahd, scb); | |
1da177e4 LT |
1797 | |
1798 | /* | |
73a25462 HR |
1799 | * Guard against stale sense data. |
1800 | * The Linux mid-layer assumes that sense | |
1801 | * was retrieved anytime the first byte of | |
1802 | * the sense buffer looks "sane". | |
1da177e4 | 1803 | */ |
73a25462 HR |
1804 | cmd->sense_buffer[0] = 0; |
1805 | if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) { | |
1806 | uint32_t amount_xferred; | |
1da177e4 | 1807 | |
73a25462 HR |
1808 | amount_xferred = |
1809 | ahd_get_transfer_length(scb) - ahd_get_residual(scb); | |
1810 | if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) { | |
1da177e4 | 1811 | #ifdef AHD_DEBUG |
73a25462 HR |
1812 | if ((ahd_debug & AHD_SHOW_MISC) != 0) { |
1813 | ahd_print_path(ahd, scb); | |
48813cf9 | 1814 | printk("Set CAM_UNCOR_PARITY\n"); |
73a25462 | 1815 | } |
1da177e4 | 1816 | #endif |
73a25462 HR |
1817 | ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); |
1818 | #ifdef AHD_REPORT_UNDERFLOWS | |
1da177e4 | 1819 | /* |
73a25462 HR |
1820 | * This code is disabled by default as some |
1821 | * clients of the SCSI system do not properly | |
1822 | * initialize the underflow parameter. This | |
1823 | * results in spurious termination of commands | |
1824 | * that complete as expected (e.g. underflow is | |
1825 | * allowed as command can return variable amounts | |
1826 | * of data. | |
1da177e4 | 1827 | */ |
73a25462 HR |
1828 | } else if (amount_xferred < scb->io_ctx->underflow) { |
1829 | u_int i; | |
1da177e4 | 1830 | |
73a25462 | 1831 | ahd_print_path(ahd, scb); |
48813cf9 | 1832 | printk("CDB:"); |
73a25462 | 1833 | for (i = 0; i < scb->io_ctx->cmd_len; i++) |
48813cf9 PE |
1834 | printk(" 0x%x", scb->io_ctx->cmnd[i]); |
1835 | printk("\n"); | |
73a25462 | 1836 | ahd_print_path(ahd, scb); |
48813cf9 | 1837 | printk("Saw underflow (%ld of %ld bytes). " |
73a25462 HR |
1838 | "Treated as error\n", |
1839 | ahd_get_residual(scb), | |
1840 | ahd_get_transfer_length(scb)); | |
1841 | ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); | |
1842 | #endif | |
1843 | } else { | |
1844 | ahd_set_transaction_status(scb, CAM_REQ_CMP); | |
1da177e4 | 1845 | } |
73a25462 HR |
1846 | } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { |
1847 | ahd_linux_handle_scsi_status(ahd, cmd->device, scb); | |
1848 | } | |
1da177e4 | 1849 | |
73a25462 HR |
1850 | if (dev->openings == 1 |
1851 | && ahd_get_transaction_status(scb) == CAM_REQ_CMP | |
1852 | && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL) | |
1853 | dev->tag_success_count++; | |
1854 | /* | |
1855 | * Some devices deal with temporary internal resource | |
1856 | * shortages by returning queue full. When the queue | |
1857 | * full occurrs, we throttle back. Slowly try to get | |
1858 | * back to our previous queue depth. | |
1859 | */ | |
1860 | if ((dev->openings + dev->active) < dev->maxtags | |
1861 | && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) { | |
1862 | dev->tag_success_count = 0; | |
1863 | dev->openings++; | |
1864 | } | |
1da177e4 | 1865 | |
73a25462 HR |
1866 | if (dev->active == 0) |
1867 | dev->commands_since_idle_or_otag = 0; | |
1da177e4 | 1868 | |
73a25462 | 1869 | if ((scb->flags & SCB_RECOVERY_SCB) != 0) { |
48813cf9 | 1870 | printk("Recovery SCB completes\n"); |
73a25462 HR |
1871 | if (ahd_get_transaction_status(scb) == CAM_BDR_SENT |
1872 | || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) | |
1873 | ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); | |
7b22da38 HR |
1874 | |
1875 | if (ahd->platform_data->eh_done) | |
1876 | complete(ahd->platform_data->eh_done); | |
1da177e4 | 1877 | } |
73a25462 HR |
1878 | |
1879 | ahd_free_scb(ahd, scb); | |
1880 | ahd_linux_queue_cmd_complete(ahd, cmd); | |
1da177e4 LT |
1881 | } |
1882 | ||
1883 | static void | |
73a25462 HR |
1884 | ahd_linux_handle_scsi_status(struct ahd_softc *ahd, |
1885 | struct scsi_device *sdev, struct scb *scb) | |
1da177e4 | 1886 | { |
73a25462 HR |
1887 | struct ahd_devinfo devinfo; |
1888 | struct ahd_linux_device *dev = scsi_transport_device_data(sdev); | |
1da177e4 | 1889 | |
73a25462 HR |
1890 | ahd_compile_devinfo(&devinfo, |
1891 | ahd->our_id, | |
1892 | sdev->sdev_target->id, sdev->lun, | |
1893 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1894 | ROLE_INITIATOR); | |
1895 | ||
1896 | /* | |
1897 | * We don't currently trust the mid-layer to | |
1898 | * properly deal with queue full or busy. So, | |
1899 | * when one occurs, we tell the mid-layer to | |
1900 | * unconditionally requeue the command to us | |
1901 | * so that we can retry it ourselves. We also | |
1902 | * implement our own throttling mechanism so | |
1903 | * we don't clobber the device with too many | |
1904 | * commands. | |
1905 | */ | |
1906 | switch (ahd_get_scsi_status(scb)) { | |
1907 | default: | |
1908 | break; | |
1909 | case SCSI_STATUS_CHECK_COND: | |
1910 | case SCSI_STATUS_CMD_TERMINATED: | |
1911 | { | |
1912 | struct scsi_cmnd *cmd; | |
1da177e4 LT |
1913 | |
1914 | /* | |
73a25462 HR |
1915 | * Copy sense information to the OS's cmd |
1916 | * structure if it is available. | |
1da177e4 | 1917 | */ |
73a25462 HR |
1918 | cmd = scb->io_ctx; |
1919 | if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) { | |
1920 | struct scsi_status_iu_header *siu; | |
1921 | u_int sense_size; | |
1922 | u_int sense_offset; | |
1da177e4 | 1923 | |
73a25462 | 1924 | if (scb->flags & SCB_SENSE) { |
6d07cb71 | 1925 | sense_size = min(sizeof(struct scsi_sense_data) |
73a25462 | 1926 | - ahd_get_sense_residual(scb), |
b80ca4f7 | 1927 | (u_long)SCSI_SENSE_BUFFERSIZE); |
73a25462 HR |
1928 | sense_offset = 0; |
1929 | } else { | |
1930 | /* | |
1931 | * Copy only the sense data into the provided | |
1932 | * buffer. | |
1933 | */ | |
1934 | siu = (struct scsi_status_iu_header *) | |
1935 | scb->sense_data; | |
6d07cb71 AL |
1936 | sense_size = min_t(size_t, |
1937 | scsi_4btoul(siu->sense_length), | |
b80ca4f7 | 1938 | SCSI_SENSE_BUFFERSIZE); |
73a25462 HR |
1939 | sense_offset = SIU_SENSE_OFFSET(siu); |
1940 | } | |
1da177e4 | 1941 | |
b80ca4f7 | 1942 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
73a25462 HR |
1943 | memcpy(cmd->sense_buffer, |
1944 | ahd_get_sense_buf(ahd, scb) | |
1945 | + sense_offset, sense_size); | |
1946 | cmd->result |= (DRIVER_SENSE << 24); | |
1da177e4 | 1947 | |
1da177e4 | 1948 | #ifdef AHD_DEBUG |
73a25462 HR |
1949 | if (ahd_debug & AHD_SHOW_SENSE) { |
1950 | int i; | |
1da177e4 | 1951 | |
48813cf9 | 1952 | printk("Copied %d bytes of sense data at %d:", |
73a25462 HR |
1953 | sense_size, sense_offset); |
1954 | for (i = 0; i < sense_size; i++) { | |
1da177e4 | 1955 | if ((i & 0xF) == 0) |
48813cf9 PE |
1956 | printk("\n"); |
1957 | printk("0x%x ", cmd->sense_buffer[i]); | |
1da177e4 | 1958 | } |
48813cf9 | 1959 | printk("\n"); |
1da177e4 LT |
1960 | } |
1961 | #endif | |
1da177e4 LT |
1962 | } |
1963 | break; | |
73a25462 HR |
1964 | } |
1965 | case SCSI_STATUS_QUEUE_FULL: | |
1966 | /* | |
1967 | * By the time the core driver has returned this | |
1968 | * command, all other commands that were queued | |
1969 | * to us but not the device have been returned. | |
1970 | * This ensures that dev->active is equal to | |
1971 | * the number of commands actually queued to | |
1972 | * the device. | |
1973 | */ | |
1974 | dev->tag_success_count = 0; | |
1975 | if (dev->active != 0) { | |
1da177e4 | 1976 | /* |
73a25462 HR |
1977 | * Drop our opening count to the number |
1978 | * of commands currently outstanding. | |
1da177e4 | 1979 | */ |
73a25462 | 1980 | dev->openings = 0; |
1da177e4 | 1981 | #ifdef AHD_DEBUG |
73a25462 HR |
1982 | if ((ahd_debug & AHD_SHOW_QFULL) != 0) { |
1983 | ahd_print_path(ahd, scb); | |
48813cf9 | 1984 | printk("Dropping tag count to %d\n", |
73a25462 | 1985 | dev->active); |
1da177e4 LT |
1986 | } |
1987 | #endif | |
73a25462 | 1988 | if (dev->active == dev->tags_on_last_queuefull) { |
1da177e4 | 1989 | |
73a25462 | 1990 | dev->last_queuefull_same_count++; |
1da177e4 | 1991 | /* |
73a25462 HR |
1992 | * If we repeatedly see a queue full |
1993 | * at the same queue depth, this | |
1994 | * device has a fixed number of tag | |
1995 | * slots. Lock in this tag depth | |
1996 | * so we stop seeing queue fulls from | |
1997 | * this device. | |
1da177e4 | 1998 | */ |
73a25462 HR |
1999 | if (dev->last_queuefull_same_count |
2000 | == AHD_LOCK_TAGS_COUNT) { | |
2001 | dev->maxtags = dev->active; | |
2002 | ahd_print_path(ahd, scb); | |
48813cf9 | 2003 | printk("Locking max tag count at %d\n", |
73a25462 | 2004 | dev->active); |
1da177e4 | 2005 | } |
73a25462 HR |
2006 | } else { |
2007 | dev->tags_on_last_queuefull = dev->active; | |
2008 | dev->last_queuefull_same_count = 0; | |
1da177e4 | 2009 | } |
73a25462 HR |
2010 | ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); |
2011 | ahd_set_scsi_status(scb, SCSI_STATUS_OK); | |
f89d0a4e | 2012 | ahd_platform_set_tags(ahd, sdev, &devinfo, |
73a25462 HR |
2013 | (dev->flags & AHD_DEV_Q_BASIC) |
2014 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
1da177e4 LT |
2015 | break; |
2016 | } | |
1da177e4 | 2017 | /* |
73a25462 HR |
2018 | * Drop down to a single opening, and treat this |
2019 | * as if the target returned BUSY SCSI status. | |
1da177e4 | 2020 | */ |
73a25462 | 2021 | dev->openings = 1; |
f89d0a4e | 2022 | ahd_platform_set_tags(ahd, sdev, &devinfo, |
73a25462 HR |
2023 | (dev->flags & AHD_DEV_Q_BASIC) |
2024 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
2025 | ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); | |
2026 | } | |
1da177e4 LT |
2027 | } |
2028 | ||
73a25462 HR |
2029 | static void |
2030 | ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) | |
1da177e4 | 2031 | { |
6902f416 HR |
2032 | int status; |
2033 | int new_status = DID_OK; | |
2034 | int do_fallback = 0; | |
2035 | int scsi_status; | |
2036 | ||
1da177e4 | 2037 | /* |
73a25462 HR |
2038 | * Map CAM error codes into Linux Error codes. We |
2039 | * avoid the conversion so that the DV code has the | |
2040 | * full error information available when making | |
2041 | * state change decisions. | |
1da177e4 | 2042 | */ |
6902f416 HR |
2043 | |
2044 | status = ahd_cmd_get_transaction_status(cmd); | |
2045 | switch (status) { | |
2046 | case CAM_REQ_INPROG: | |
2047 | case CAM_REQ_CMP: | |
2048 | new_status = DID_OK; | |
2049 | break; | |
2050 | case CAM_AUTOSENSE_FAIL: | |
2051 | new_status = DID_ERROR; | |
2052 | /* Fallthrough */ | |
2053 | case CAM_SCSI_STATUS_ERROR: | |
2054 | scsi_status = ahd_cmd_get_scsi_status(cmd); | |
2055 | ||
2056 | switch(scsi_status) { | |
2057 | case SCSI_STATUS_CMD_TERMINATED: | |
2058 | case SCSI_STATUS_CHECK_COND: | |
2059 | if ((cmd->result >> 24) != DRIVER_SENSE) { | |
2060 | do_fallback = 1; | |
2061 | } else { | |
2062 | struct scsi_sense_data *sense; | |
2063 | ||
2064 | sense = (struct scsi_sense_data *) | |
c1c9ce52 | 2065 | cmd->sense_buffer; |
6902f416 HR |
2066 | if (sense->extra_len >= 5 && |
2067 | (sense->add_sense_code == 0x47 | |
2068 | || sense->add_sense_code == 0x48)) | |
2069 | do_fallback = 1; | |
2070 | } | |
73a25462 HR |
2071 | break; |
2072 | default: | |
73a25462 HR |
2073 | break; |
2074 | } | |
6902f416 HR |
2075 | break; |
2076 | case CAM_REQ_ABORTED: | |
2077 | new_status = DID_ABORT; | |
2078 | break; | |
2079 | case CAM_BUSY: | |
2080 | new_status = DID_BUS_BUSY; | |
2081 | break; | |
2082 | case CAM_REQ_INVALID: | |
2083 | case CAM_PATH_INVALID: | |
2084 | new_status = DID_BAD_TARGET; | |
2085 | break; | |
2086 | case CAM_SEL_TIMEOUT: | |
2087 | new_status = DID_NO_CONNECT; | |
2088 | break; | |
2089 | case CAM_SCSI_BUS_RESET: | |
2090 | case CAM_BDR_SENT: | |
2091 | new_status = DID_RESET; | |
2092 | break; | |
2093 | case CAM_UNCOR_PARITY: | |
2094 | new_status = DID_PARITY; | |
2095 | do_fallback = 1; | |
2096 | break; | |
2097 | case CAM_CMD_TIMEOUT: | |
2098 | new_status = DID_TIME_OUT; | |
2099 | do_fallback = 1; | |
2100 | break; | |
2101 | case CAM_REQ_CMP_ERR: | |
2102 | case CAM_UNEXP_BUSFREE: | |
2103 | case CAM_DATA_RUN_ERR: | |
2104 | new_status = DID_ERROR; | |
2105 | do_fallback = 1; | |
2106 | break; | |
2107 | case CAM_UA_ABORT: | |
2108 | case CAM_NO_HBA: | |
2109 | case CAM_SEQUENCE_FAIL: | |
2110 | case CAM_CCB_LEN_ERR: | |
2111 | case CAM_PROVIDE_FAIL: | |
2112 | case CAM_REQ_TERMIO: | |
2113 | case CAM_UNREC_HBA_ERROR: | |
2114 | case CAM_REQ_TOO_BIG: | |
2115 | new_status = DID_ERROR; | |
2116 | break; | |
2117 | case CAM_REQUEUE_REQ: | |
2118 | new_status = DID_REQUEUE; | |
2119 | break; | |
2120 | default: | |
2121 | /* We should never get here */ | |
2122 | new_status = DID_ERROR; | |
2123 | break; | |
2124 | } | |
73a25462 | 2125 | |
6902f416 | 2126 | if (do_fallback) { |
48813cf9 | 2127 | printk("%s: device overrun (status %x) on %d:%d:%d\n", |
6902f416 | 2128 | ahd_name(ahd), status, cmd->device->channel, |
9cb78c16 | 2129 | cmd->device->id, (u8)cmd->device->lun); |
73a25462 HR |
2130 | } |
2131 | ||
6902f416 HR |
2132 | ahd_cmd_set_transaction_status(cmd, new_status); |
2133 | ||
73a25462 | 2134 | cmd->scsi_done(cmd); |
1da177e4 LT |
2135 | } |
2136 | ||
e3e0ca51 | 2137 | static void |
73a25462 | 2138 | ahd_freeze_simq(struct ahd_softc *ahd) |
1da177e4 | 2139 | { |
7b22da38 | 2140 | scsi_block_requests(ahd->platform_data->host); |
1da177e4 LT |
2141 | } |
2142 | ||
e3e0ca51 | 2143 | static void |
73a25462 | 2144 | ahd_release_simq(struct ahd_softc *ahd) |
1da177e4 | 2145 | { |
7b22da38 | 2146 | scsi_unblock_requests(ahd->platform_data->host); |
73a25462 | 2147 | } |
1da177e4 | 2148 | |
73a25462 | 2149 | static int |
6902f416 | 2150 | ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd) |
73a25462 HR |
2151 | { |
2152 | struct ahd_softc *ahd; | |
2153 | struct ahd_linux_device *dev; | |
2154 | struct scb *pending_scb; | |
2155 | u_int saved_scbptr; | |
2156 | u_int active_scbptr; | |
2157 | u_int last_phase; | |
2158 | u_int saved_scsiid; | |
2159 | u_int cdb_byte; | |
2160 | int retval; | |
2161 | int was_paused; | |
2162 | int paused; | |
2163 | int wait; | |
2164 | int disconnected; | |
2165 | ahd_mode_state saved_modes; | |
4065a413 | 2166 | unsigned long flags; |
73a25462 HR |
2167 | |
2168 | pending_scb = NULL; | |
2169 | paused = FALSE; | |
2170 | wait = FALSE; | |
2171 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
2172 | ||
017560fc | 2173 | scmd_printk(KERN_INFO, cmd, |
6902f416 | 2174 | "Attempting to queue an ABORT message:"); |
73a25462 | 2175 | |
48813cf9 | 2176 | printk("CDB:"); |
73a25462 | 2177 | for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) |
48813cf9 PE |
2178 | printk(" 0x%x", cmd->cmnd[cdb_byte]); |
2179 | printk("\n"); | |
73a25462 | 2180 | |
4065a413 | 2181 | ahd_lock(ahd, &flags); |
1da177e4 | 2182 | |
1da177e4 | 2183 | /* |
73a25462 HR |
2184 | * First determine if we currently own this command. |
2185 | * Start by searching the device queue. If not found | |
2186 | * there, check the pending_scb list. If not found | |
2187 | * at all, and the system wanted us to just abort the | |
2188 | * command, return success. | |
1da177e4 | 2189 | */ |
73a25462 HR |
2190 | dev = scsi_transport_device_data(cmd->device); |
2191 | ||
2192 | if (dev == NULL) { | |
2193 | /* | |
2194 | * No target device for this command exists, | |
2195 | * so we must not still own the command. | |
2196 | */ | |
017560fc | 2197 | scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); |
73a25462 HR |
2198 | retval = SUCCESS; |
2199 | goto no_cmd; | |
2200 | } | |
1da177e4 | 2201 | |
1da177e4 | 2202 | /* |
73a25462 | 2203 | * See if we can find a matching cmd in the pending list. |
1da177e4 | 2204 | */ |
73a25462 HR |
2205 | LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { |
2206 | if (pending_scb->io_ctx == cmd) | |
2207 | break; | |
1da177e4 LT |
2208 | } |
2209 | ||
73a25462 | 2210 | if (pending_scb == NULL) { |
017560fc | 2211 | scmd_printk(KERN_INFO, cmd, "Command not found\n"); |
73a25462 | 2212 | goto no_cmd; |
1da177e4 | 2213 | } |
1da177e4 | 2214 | |
73a25462 HR |
2215 | if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { |
2216 | /* | |
2217 | * We can't queue two recovery actions using the same SCB | |
2218 | */ | |
2219 | retval = FAILED; | |
2220 | goto done; | |
2221 | } | |
1da177e4 | 2222 | |
1da177e4 | 2223 | /* |
73a25462 HR |
2224 | * Ensure that the card doesn't do anything |
2225 | * behind our back. Also make sure that we | |
2226 | * didn't "just" miss an interrupt that would | |
2227 | * affect this cmd. | |
1da177e4 | 2228 | */ |
73a25462 HR |
2229 | was_paused = ahd_is_paused(ahd); |
2230 | ahd_pause_and_flushwork(ahd); | |
2231 | paused = TRUE; | |
1da177e4 | 2232 | |
73a25462 | 2233 | if ((pending_scb->flags & SCB_ACTIVE) == 0) { |
017560fc | 2234 | scmd_printk(KERN_INFO, cmd, "Command already completed\n"); |
73a25462 HR |
2235 | goto no_cmd; |
2236 | } | |
1da177e4 | 2237 | |
48813cf9 | 2238 | printk("%s: At time of recovery, card was %spaused\n", |
73a25462 HR |
2239 | ahd_name(ahd), was_paused ? "" : "not "); |
2240 | ahd_dump_card_state(ahd); | |
1da177e4 | 2241 | |
73a25462 | 2242 | disconnected = TRUE; |
6902f416 HR |
2243 | if (ahd_search_qinfifo(ahd, cmd->device->id, |
2244 | cmd->device->channel + 'A', | |
9cb78c16 | 2245 | cmd->device->lun, |
6902f416 HR |
2246 | pending_scb->hscb->tag, |
2247 | ROLE_INITIATOR, CAM_REQ_ABORTED, | |
2248 | SEARCH_COMPLETE) > 0) { | |
48813cf9 | 2249 | printk("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", |
6902f416 | 2250 | ahd_name(ahd), cmd->device->channel, |
9cb78c16 | 2251 | cmd->device->id, (u8)cmd->device->lun); |
6902f416 HR |
2252 | retval = SUCCESS; |
2253 | goto done; | |
73a25462 | 2254 | } |
1da177e4 | 2255 | |
73a25462 HR |
2256 | saved_modes = ahd_save_modes(ahd); |
2257 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); | |
2258 | last_phase = ahd_inb(ahd, LASTPHASE); | |
2259 | saved_scbptr = ahd_get_scbptr(ahd); | |
2260 | active_scbptr = saved_scbptr; | |
6902f416 | 2261 | if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { |
73a25462 | 2262 | struct scb *bus_scb; |
1da177e4 | 2263 | |
73a25462 HR |
2264 | bus_scb = ahd_lookup_scb(ahd, active_scbptr); |
2265 | if (bus_scb == pending_scb) | |
2266 | disconnected = FALSE; | |
1da177e4 | 2267 | } |
73a25462 HR |
2268 | |
2269 | /* | |
2270 | * At this point, pending_scb is the scb associated with the | |
2271 | * passed in command. That command is currently active on the | |
2272 | * bus or is in the disconnected state. | |
2273 | */ | |
2274 | saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); | |
6902f416 HR |
2275 | if (last_phase != P_BUSFREE |
2276 | && SCB_GET_TAG(pending_scb) == active_scbptr) { | |
73a25462 | 2277 | |
1da177e4 | 2278 | /* |
73a25462 HR |
2279 | * We're active on the bus, so assert ATN |
2280 | * and hope that the target responds. | |
1da177e4 | 2281 | */ |
73a25462 | 2282 | pending_scb = ahd_lookup_scb(ahd, active_scbptr); |
6902f416 | 2283 | pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
73a25462 HR |
2284 | ahd_outb(ahd, MSG_OUT, HOST_MSG); |
2285 | ahd_outb(ahd, SCSISIGO, last_phase|ATNO); | |
6902f416 | 2286 | scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n"); |
73a25462 HR |
2287 | wait = TRUE; |
2288 | } else if (disconnected) { | |
2289 | ||
2290 | /* | |
2291 | * Actually re-queue this SCB in an attempt | |
2292 | * to select the device before it reconnects. | |
2293 | */ | |
6902f416 | 2294 | pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
73a25462 HR |
2295 | ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); |
2296 | pending_scb->hscb->cdb_len = 0; | |
2297 | pending_scb->hscb->task_attribute = 0; | |
2298 | pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; | |
2299 | ||
2300 | if ((pending_scb->flags & SCB_PACKETIZED) != 0) { | |
1da177e4 | 2301 | /* |
73a25462 HR |
2302 | * Mark the SCB has having an outstanding |
2303 | * task management function. Should the command | |
2304 | * complete normally before the task management | |
2305 | * function can be sent, the host will be notified | |
2306 | * to abort our requeued SCB. | |
1da177e4 | 2307 | */ |
73a25462 HR |
2308 | ahd_outb(ahd, SCB_TASK_MANAGEMENT, |
2309 | pending_scb->hscb->task_management); | |
2310 | } else { | |
2311 | /* | |
2312 | * If non-packetized, set the MK_MESSAGE control | |
2313 | * bit indicating that we desire to send a message. | |
2314 | * We also set the disconnected flag since there is | |
2315 | * no guarantee that our SCB control byte matches | |
2316 | * the version on the card. We don't want the | |
2317 | * sequencer to abort the command thinking an | |
2318 | * unsolicited reselection occurred. | |
2319 | */ | |
2320 | pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; | |
2321 | ||
2322 | /* | |
2323 | * The sequencer will never re-reference the | |
2324 | * in-core SCB. To make sure we are notified | |
b71a8eb0 | 2325 | * during reselection, set the MK_MESSAGE flag in |
73a25462 HR |
2326 | * the card's copy of the SCB. |
2327 | */ | |
2328 | ahd_outb(ahd, SCB_CONTROL, | |
2329 | ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); | |
1da177e4 | 2330 | } |
73a25462 | 2331 | |
1da177e4 | 2332 | /* |
73a25462 HR |
2333 | * Clear out any entries in the QINFIFO first |
2334 | * so we are the next SCB for this target | |
2335 | * to run. | |
1da177e4 | 2336 | */ |
73a25462 HR |
2337 | ahd_search_qinfifo(ahd, cmd->device->id, |
2338 | cmd->device->channel + 'A', cmd->device->lun, | |
2339 | SCB_LIST_NULL, ROLE_INITIATOR, | |
2340 | CAM_REQUEUE_REQ, SEARCH_COMPLETE); | |
2341 | ahd_qinfifo_requeue_tail(ahd, pending_scb); | |
2342 | ahd_set_scbptr(ahd, saved_scbptr); | |
2343 | ahd_print_path(ahd, pending_scb); | |
48813cf9 | 2344 | printk("Device is disconnected, re-queuing SCB\n"); |
73a25462 HR |
2345 | wait = TRUE; |
2346 | } else { | |
017560fc | 2347 | scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); |
73a25462 HR |
2348 | retval = FAILED; |
2349 | goto done; | |
1da177e4 | 2350 | } |
1da177e4 | 2351 | |
73a25462 | 2352 | no_cmd: |
1da177e4 | 2353 | /* |
73a25462 HR |
2354 | * Our assumption is that if we don't have the command, no |
2355 | * recovery action was required, so we return success. Again, | |
2356 | * the semantics of the mid-layer recovery engine are not | |
2357 | * well defined, so this may change in time. | |
1da177e4 | 2358 | */ |
73a25462 HR |
2359 | retval = SUCCESS; |
2360 | done: | |
2361 | if (paused) | |
2362 | ahd_unpause(ahd); | |
2363 | if (wait) { | |
6e9a4738 | 2364 | DECLARE_COMPLETION_ONSTACK(done); |
1da177e4 | 2365 | |
7b22da38 | 2366 | ahd->platform_data->eh_done = &done; |
4065a413 CH |
2367 | ahd_unlock(ahd, &flags); |
2368 | ||
48813cf9 | 2369 | printk("%s: Recovery code sleeping\n", ahd_name(ahd)); |
7b22da38 HR |
2370 | if (!wait_for_completion_timeout(&done, 5 * HZ)) { |
2371 | ahd_lock(ahd, &flags); | |
2372 | ahd->platform_data->eh_done = NULL; | |
2373 | ahd_unlock(ahd, &flags); | |
48813cf9 | 2374 | printk("%s: Timer Expired (active %d)\n", |
11668bb6 | 2375 | ahd_name(ahd), dev->active); |
73a25462 | 2376 | retval = FAILED; |
1da177e4 | 2377 | } |
48813cf9 | 2378 | printk("Recovery code awake\n"); |
eb221849 HR |
2379 | } else |
2380 | ahd_unlock(ahd, &flags); | |
2381 | ||
7b22da38 | 2382 | if (retval != SUCCESS) |
48813cf9 | 2383 | printk("%s: Command abort returning 0x%x\n", |
7b22da38 HR |
2384 | ahd_name(ahd), retval); |
2385 | ||
2386 | return retval; | |
1da177e4 LT |
2387 | } |
2388 | ||
73a25462 | 2389 | static void ahd_linux_set_width(struct scsi_target *starget, int width) |
1da177e4 | 2390 | { |
73a25462 HR |
2391 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2392 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2393 | struct ahd_devinfo devinfo; | |
2394 | unsigned long flags; | |
1da177e4 | 2395 | |
73a25462 HR |
2396 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2397 | starget->channel + 'A', ROLE_INITIATOR); | |
2398 | ahd_lock(ahd, &flags); | |
2399 | ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); | |
2400 | ahd_unlock(ahd, &flags); | |
2401 | } | |
2402 | ||
2403 | static void ahd_linux_set_period(struct scsi_target *starget, int period) | |
2404 | { | |
2405 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2406 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2407 | struct ahd_tmode_tstate *tstate; | |
2408 | struct ahd_initiator_tinfo *tinfo | |
2409 | = ahd_fetch_transinfo(ahd, | |
2410 | starget->channel + 'A', | |
2411 | shost->this_id, starget->id, &tstate); | |
2412 | struct ahd_devinfo devinfo; | |
2413 | unsigned int ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 | 2414 | unsigned int dt; |
73a25462 HR |
2415 | unsigned long flags; |
2416 | unsigned long offset = tinfo->goal.offset; | |
1da177e4 | 2417 | |
a4b53a11 HR |
2418 | #ifdef AHD_DEBUG |
2419 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2420 | printk("%s: set period to %d\n", ahd_name(ahd), period); |
a4b53a11 | 2421 | #endif |
73a25462 HR |
2422 | if (offset == 0) |
2423 | offset = MAX_OFFSET; | |
1da177e4 | 2424 | |
73a25462 HR |
2425 | if (period < 8) |
2426 | period = 8; | |
2427 | if (period < 10) { | |
0f82cb92 JB |
2428 | if (spi_max_width(starget)) { |
2429 | ppr_options |= MSG_EXT_PPR_DT_REQ; | |
2430 | if (period == 8) | |
2431 | ppr_options |= MSG_EXT_PPR_IU_REQ; | |
2432 | } else | |
2433 | period = 10; | |
1da177e4 LT |
2434 | } |
2435 | ||
a4b53a11 HR |
2436 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
2437 | ||
73a25462 HR |
2438 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2439 | starget->channel + 'A', ROLE_INITIATOR); | |
1da177e4 | 2440 | |
73a25462 HR |
2441 | /* all PPR requests apart from QAS require wide transfers */ |
2442 | if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { | |
2443 | if (spi_width(starget) == 0) | |
2444 | ppr_options &= MSG_EXT_PPR_QAS_REQ; | |
1da177e4 | 2445 | } |
73a25462 | 2446 | |
a4b53a11 HR |
2447 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2448 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2449 | ||
73a25462 HR |
2450 | ahd_lock(ahd, &flags); |
2451 | ahd_set_syncrate(ahd, &devinfo, period, offset, | |
2452 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2453 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2454 | } |
2455 | ||
73a25462 | 2456 | static void ahd_linux_set_offset(struct scsi_target *starget, int offset) |
1da177e4 | 2457 | { |
73a25462 HR |
2458 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2459 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2460 | struct ahd_tmode_tstate *tstate; | |
2461 | struct ahd_initiator_tinfo *tinfo | |
2462 | = ahd_fetch_transinfo(ahd, | |
2463 | starget->channel + 'A', | |
2464 | shost->this_id, starget->id, &tstate); | |
2465 | struct ahd_devinfo devinfo; | |
2466 | unsigned int ppr_options = 0; | |
2467 | unsigned int period = 0; | |
a4b53a11 | 2468 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
73a25462 HR |
2469 | unsigned long flags; |
2470 | ||
a4b53a11 HR |
2471 | #ifdef AHD_DEBUG |
2472 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2473 | printk("%s: set offset to %d\n", ahd_name(ahd), offset); |
a4b53a11 HR |
2474 | #endif |
2475 | ||
73a25462 HR |
2476 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2477 | starget->channel + 'A', ROLE_INITIATOR); | |
2478 | if (offset != 0) { | |
2479 | period = tinfo->goal.period; | |
2480 | ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 HR |
2481 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2482 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
1da177e4 | 2483 | } |
a4b53a11 | 2484 | |
73a25462 HR |
2485 | ahd_lock(ahd, &flags); |
2486 | ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, | |
2487 | AHD_TRANS_GOAL, FALSE); | |
2488 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2489 | } |
2490 | ||
73a25462 | 2491 | static void ahd_linux_set_dt(struct scsi_target *starget, int dt) |
1da177e4 | 2492 | { |
73a25462 HR |
2493 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2494 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2495 | struct ahd_tmode_tstate *tstate; | |
2496 | struct ahd_initiator_tinfo *tinfo | |
2497 | = ahd_fetch_transinfo(ahd, | |
2498 | starget->channel + 'A', | |
2499 | shost->this_id, starget->id, &tstate); | |
2500 | struct ahd_devinfo devinfo; | |
2501 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2502 | & ~MSG_EXT_PPR_DT_REQ; | |
2503 | unsigned int period = tinfo->goal.period; | |
52b5cfb3 | 2504 | unsigned int width = tinfo->goal.width; |
73a25462 HR |
2505 | unsigned long flags; |
2506 | ||
a4b53a11 HR |
2507 | #ifdef AHD_DEBUG |
2508 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2509 | printk("%s: %s DT\n", ahd_name(ahd), |
a4b53a11 HR |
2510 | dt ? "enabling" : "disabling"); |
2511 | #endif | |
0f82cb92 | 2512 | if (dt && spi_max_width(starget)) { |
73a25462 | 2513 | ppr_options |= MSG_EXT_PPR_DT_REQ; |
52b5cfb3 HR |
2514 | if (!width) |
2515 | ahd_linux_set_width(starget, 1); | |
a4b53a11 HR |
2516 | } else { |
2517 | if (period <= 9) | |
2518 | period = 10; /* If resetting DT, period must be >= 25ns */ | |
2519 | /* IU is invalid without DT set */ | |
2520 | ppr_options &= ~MSG_EXT_PPR_IU_REQ; | |
2521 | } | |
73a25462 HR |
2522 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2523 | starget->channel + 'A', ROLE_INITIATOR); | |
2524 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2525 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2526 | |
73a25462 HR |
2527 | ahd_lock(ahd, &flags); |
2528 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2529 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2530 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2531 | } |
2532 | ||
73a25462 | 2533 | static void ahd_linux_set_qas(struct scsi_target *starget, int qas) |
1da177e4 | 2534 | { |
73a25462 HR |
2535 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2536 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2537 | struct ahd_tmode_tstate *tstate; | |
2538 | struct ahd_initiator_tinfo *tinfo | |
2539 | = ahd_fetch_transinfo(ahd, | |
2540 | starget->channel + 'A', | |
2541 | shost->this_id, starget->id, &tstate); | |
2542 | struct ahd_devinfo devinfo; | |
2543 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2544 | & ~MSG_EXT_PPR_QAS_REQ; | |
2545 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2546 | unsigned int dt; |
73a25462 HR |
2547 | unsigned long flags; |
2548 | ||
a4b53a11 HR |
2549 | #ifdef AHD_DEBUG |
2550 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2551 | printk("%s: %s QAS\n", ahd_name(ahd), |
a4b53a11 HR |
2552 | qas ? "enabling" : "disabling"); |
2553 | #endif | |
2554 | ||
2555 | if (qas) { | |
2556 | ppr_options |= MSG_EXT_PPR_QAS_REQ; | |
2557 | } | |
2558 | ||
2559 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2560 | |
2561 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2562 | starget->channel + 'A', ROLE_INITIATOR); | |
2563 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2564 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2565 | |
73a25462 HR |
2566 | ahd_lock(ahd, &flags); |
2567 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2568 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2569 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2570 | } |
2571 | ||
73a25462 | 2572 | static void ahd_linux_set_iu(struct scsi_target *starget, int iu) |
1da177e4 | 2573 | { |
73a25462 HR |
2574 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2575 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2576 | struct ahd_tmode_tstate *tstate; | |
2577 | struct ahd_initiator_tinfo *tinfo | |
2578 | = ahd_fetch_transinfo(ahd, | |
2579 | starget->channel + 'A', | |
2580 | shost->this_id, starget->id, &tstate); | |
2581 | struct ahd_devinfo devinfo; | |
2582 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2583 | & ~MSG_EXT_PPR_IU_REQ; | |
2584 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2585 | unsigned int dt; |
73a25462 HR |
2586 | unsigned long flags; |
2587 | ||
a4b53a11 HR |
2588 | #ifdef AHD_DEBUG |
2589 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2590 | printk("%s: %s IU\n", ahd_name(ahd), |
a4b53a11 HR |
2591 | iu ? "enabling" : "disabling"); |
2592 | #endif | |
2593 | ||
0f82cb92 | 2594 | if (iu && spi_max_width(starget)) { |
73a25462 | 2595 | ppr_options |= MSG_EXT_PPR_IU_REQ; |
a4b53a11 HR |
2596 | ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ |
2597 | } | |
2598 | ||
2599 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2600 | |
2601 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2602 | starget->channel + 'A', ROLE_INITIATOR); | |
2603 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2604 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2605 | |
73a25462 HR |
2606 | ahd_lock(ahd, &flags); |
2607 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2608 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2609 | ahd_unlock(ahd, &flags); | |
2610 | } | |
1da177e4 | 2611 | |
73a25462 HR |
2612 | static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) |
2613 | { | |
2614 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2615 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2616 | struct ahd_tmode_tstate *tstate; | |
2617 | struct ahd_initiator_tinfo *tinfo | |
2618 | = ahd_fetch_transinfo(ahd, | |
2619 | starget->channel + 'A', | |
2620 | shost->this_id, starget->id, &tstate); | |
2621 | struct ahd_devinfo devinfo; | |
2622 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2623 | & ~MSG_EXT_PPR_RD_STRM; | |
2624 | unsigned int period = tinfo->goal.period; | |
2625 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2626 | unsigned long flags; | |
2627 | ||
a4b53a11 HR |
2628 | #ifdef AHD_DEBUG |
2629 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2630 | printk("%s: %s Read Streaming\n", ahd_name(ahd), |
a4b53a11 HR |
2631 | rdstrm ? "enabling" : "disabling"); |
2632 | #endif | |
2633 | ||
0f82cb92 | 2634 | if (rdstrm && spi_max_width(starget)) |
73a25462 HR |
2635 | ppr_options |= MSG_EXT_PPR_RD_STRM; |
2636 | ||
2637 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2638 | starget->channel + 'A', ROLE_INITIATOR); | |
2639 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2640 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2641 | |
a4b53a11 HR |
2642 | ahd_lock(ahd, &flags); |
2643 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2644 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2645 | ahd_unlock(ahd, &flags); | |
2646 | } | |
2647 | ||
2648 | static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) | |
2649 | { | |
2650 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2651 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2652 | struct ahd_tmode_tstate *tstate; | |
2653 | struct ahd_initiator_tinfo *tinfo | |
2654 | = ahd_fetch_transinfo(ahd, | |
2655 | starget->channel + 'A', | |
2656 | shost->this_id, starget->id, &tstate); | |
2657 | struct ahd_devinfo devinfo; | |
2658 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2659 | & ~MSG_EXT_PPR_WR_FLOW; | |
2660 | unsigned int period = tinfo->goal.period; | |
2661 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2662 | unsigned long flags; | |
2663 | ||
2664 | #ifdef AHD_DEBUG | |
2665 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2666 | printk("%s: %s Write Flow Control\n", ahd_name(ahd), |
a4b53a11 HR |
2667 | wrflow ? "enabling" : "disabling"); |
2668 | #endif | |
2669 | ||
0f82cb92 | 2670 | if (wrflow && spi_max_width(starget)) |
a4b53a11 HR |
2671 | ppr_options |= MSG_EXT_PPR_WR_FLOW; |
2672 | ||
2673 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2674 | starget->channel + 'A', ROLE_INITIATOR); | |
2675 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2676 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2677 | ||
a4b53a11 HR |
2678 | ahd_lock(ahd, &flags); |
2679 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2680 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2681 | ahd_unlock(ahd, &flags); | |
2682 | } | |
2683 | ||
2684 | static void ahd_linux_set_rti(struct scsi_target *starget, int rti) | |
2685 | { | |
2686 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2687 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2688 | struct ahd_tmode_tstate *tstate; | |
2689 | struct ahd_initiator_tinfo *tinfo | |
2690 | = ahd_fetch_transinfo(ahd, | |
2691 | starget->channel + 'A', | |
2692 | shost->this_id, starget->id, &tstate); | |
2693 | struct ahd_devinfo devinfo; | |
2694 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2695 | & ~MSG_EXT_PPR_RTI; | |
2696 | unsigned int period = tinfo->goal.period; | |
2697 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2698 | unsigned long flags; | |
2699 | ||
2700 | if ((ahd->features & AHD_RTI) == 0) { | |
2701 | #ifdef AHD_DEBUG | |
2702 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2703 | printk("%s: RTI not available\n", ahd_name(ahd)); |
a4b53a11 HR |
2704 | #endif |
2705 | return; | |
2706 | } | |
2707 | ||
2708 | #ifdef AHD_DEBUG | |
2709 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2710 | printk("%s: %s RTI\n", ahd_name(ahd), |
a4b53a11 HR |
2711 | rti ? "enabling" : "disabling"); |
2712 | #endif | |
2713 | ||
0f82cb92 | 2714 | if (rti && spi_max_width(starget)) |
a4b53a11 HR |
2715 | ppr_options |= MSG_EXT_PPR_RTI; |
2716 | ||
2717 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2718 | starget->channel + 'A', ROLE_INITIATOR); | |
2719 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2720 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2721 | ||
a4b53a11 HR |
2722 | ahd_lock(ahd, &flags); |
2723 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2724 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2725 | ahd_unlock(ahd, &flags); | |
2726 | } | |
2727 | ||
2728 | static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) | |
2729 | { | |
2730 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2731 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2732 | struct ahd_tmode_tstate *tstate; | |
2733 | struct ahd_initiator_tinfo *tinfo | |
2734 | = ahd_fetch_transinfo(ahd, | |
2735 | starget->channel + 'A', | |
2736 | shost->this_id, starget->id, &tstate); | |
2737 | struct ahd_devinfo devinfo; | |
2738 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2739 | & ~MSG_EXT_PPR_PCOMP_EN; | |
2740 | unsigned int period = tinfo->goal.period; | |
2741 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2742 | unsigned long flags; | |
2743 | ||
2744 | #ifdef AHD_DEBUG | |
2745 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2746 | printk("%s: %s Precompensation\n", ahd_name(ahd), |
a4b53a11 HR |
2747 | pcomp ? "Enable" : "Disable"); |
2748 | #endif | |
2749 | ||
0f82cb92 | 2750 | if (pcomp && spi_max_width(starget)) { |
843822ad HR |
2751 | uint8_t precomp; |
2752 | ||
2753 | if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) { | |
980b306a | 2754 | const struct ahd_linux_iocell_opts *iocell_opts; |
843822ad HR |
2755 | |
2756 | iocell_opts = &aic79xx_iocell_info[ahd->unit]; | |
2757 | precomp = iocell_opts->precomp; | |
2758 | } else { | |
2759 | precomp = AIC79XX_DEFAULT_PRECOMP; | |
2760 | } | |
a4b53a11 | 2761 | ppr_options |= MSG_EXT_PPR_PCOMP_EN; |
843822ad HR |
2762 | AHD_SET_PRECOMP(ahd, precomp); |
2763 | } else { | |
2764 | AHD_SET_PRECOMP(ahd, 0); | |
2765 | } | |
a4b53a11 HR |
2766 | |
2767 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2768 | starget->channel + 'A', ROLE_INITIATOR); | |
2769 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2770 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2771 | ||
73a25462 HR |
2772 | ahd_lock(ahd, &flags); |
2773 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2774 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2775 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2776 | } |
2777 | ||
88ff29a4 JB |
2778 | static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) |
2779 | { | |
2780 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2781 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2782 | struct ahd_tmode_tstate *tstate; | |
2783 | struct ahd_initiator_tinfo *tinfo | |
2784 | = ahd_fetch_transinfo(ahd, | |
2785 | starget->channel + 'A', | |
2786 | shost->this_id, starget->id, &tstate); | |
2787 | struct ahd_devinfo devinfo; | |
2788 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2789 | & ~MSG_EXT_PPR_HOLD_MCS; | |
2790 | unsigned int period = tinfo->goal.period; | |
2791 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2792 | unsigned long flags; | |
2793 | ||
0f82cb92 | 2794 | if (hold && spi_max_width(starget)) |
88ff29a4 JB |
2795 | ppr_options |= MSG_EXT_PPR_HOLD_MCS; |
2796 | ||
2797 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2798 | starget->channel + 'A', ROLE_INITIATOR); | |
2799 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2800 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2801 | ||
2802 | ahd_lock(ahd, &flags); | |
2803 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2804 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2805 | ahd_unlock(ahd, &flags); | |
2806 | } | |
2807 | ||
d6b9ccbb HR |
2808 | static void ahd_linux_get_signalling(struct Scsi_Host *shost) |
2809 | { | |
2810 | struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata; | |
2811 | unsigned long flags; | |
2812 | u8 mode; | |
88ff29a4 | 2813 | |
d6b9ccbb HR |
2814 | ahd_lock(ahd, &flags); |
2815 | ahd_pause(ahd); | |
2816 | mode = ahd_inb(ahd, SBLKCTL); | |
2817 | ahd_unpause(ahd); | |
2818 | ahd_unlock(ahd, &flags); | |
2819 | ||
2820 | if (mode & ENAB40) | |
2821 | spi_signalling(shost) = SPI_SIGNAL_LVD; | |
2822 | else if (mode & ENAB20) | |
2823 | spi_signalling(shost) = SPI_SIGNAL_SE; | |
2824 | else | |
2825 | spi_signalling(shost) = SPI_SIGNAL_UNKNOWN; | |
2826 | } | |
88ff29a4 | 2827 | |
73a25462 HR |
2828 | static struct spi_function_template ahd_linux_transport_functions = { |
2829 | .set_offset = ahd_linux_set_offset, | |
2830 | .show_offset = 1, | |
2831 | .set_period = ahd_linux_set_period, | |
2832 | .show_period = 1, | |
2833 | .set_width = ahd_linux_set_width, | |
2834 | .show_width = 1, | |
2835 | .set_dt = ahd_linux_set_dt, | |
2836 | .show_dt = 1, | |
2837 | .set_iu = ahd_linux_set_iu, | |
2838 | .show_iu = 1, | |
2839 | .set_qas = ahd_linux_set_qas, | |
2840 | .show_qas = 1, | |
2841 | .set_rd_strm = ahd_linux_set_rd_strm, | |
2842 | .show_rd_strm = 1, | |
a4b53a11 HR |
2843 | .set_wr_flow = ahd_linux_set_wr_flow, |
2844 | .show_wr_flow = 1, | |
2845 | .set_rti = ahd_linux_set_rti, | |
2846 | .show_rti = 1, | |
2847 | .set_pcomp_en = ahd_linux_set_pcomp_en, | |
2848 | .show_pcomp_en = 1, | |
88ff29a4 JB |
2849 | .set_hold_mcs = ahd_linux_set_hold_mcs, |
2850 | .show_hold_mcs = 1, | |
d6b9ccbb | 2851 | .get_signalling = ahd_linux_get_signalling, |
73a25462 HR |
2852 | }; |
2853 | ||
1da177e4 LT |
2854 | static int __init |
2855 | ahd_linux_init(void) | |
2856 | { | |
85a46523 CH |
2857 | int error = 0; |
2858 | ||
2859 | /* | |
2860 | * If we've been passed any parameters, process them now. | |
2861 | */ | |
2862 | if (aic79xx) | |
2863 | aic79xx_setup(aic79xx); | |
2864 | ||
2865 | ahd_linux_transport_template = | |
2866 | spi_attach_transport(&ahd_linux_transport_functions); | |
73a25462 HR |
2867 | if (!ahd_linux_transport_template) |
2868 | return -ENODEV; | |
85a46523 | 2869 | |
73a25462 HR |
2870 | scsi_transport_reserve_device(ahd_linux_transport_template, |
2871 | sizeof(struct ahd_linux_device)); | |
a80b3424 | 2872 | |
85a46523 CH |
2873 | error = ahd_linux_pci_init(); |
2874 | if (error) | |
2875 | spi_release_transport(ahd_linux_transport_template); | |
2876 | return error; | |
1da177e4 LT |
2877 | } |
2878 | ||
2879 | static void __exit | |
2880 | ahd_linux_exit(void) | |
2881 | { | |
1da177e4 | 2882 | ahd_linux_pci_exit(); |
73a25462 | 2883 | spi_release_transport(ahd_linux_transport_template); |
1da177e4 LT |
2884 | } |
2885 | ||
2886 | module_init(ahd_linux_init); | |
2887 | module_exit(ahd_linux_exit); |