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", |
73a25462 HR |
909 | .proc_info = ahd_linux_proc_info, |
910 | .info = ahd_linux_info, | |
911 | .queuecommand = ahd_linux_queue, | |
912 | .eh_abort_handler = ahd_linux_abort, | |
913 | .eh_device_reset_handler = ahd_linux_dev_reset, | |
914 | .eh_bus_reset_handler = ahd_linux_bus_reset, | |
915 | #if defined(__i386__) | |
916 | .bios_param = ahd_linux_biosparam, | |
917 | #endif | |
918 | .can_queue = AHD_MAX_QUEUE, | |
919 | .this_id = -1, | |
80f1443c | 920 | .max_sectors = 8192, |
73a25462 HR |
921 | .cmd_per_lun = 2, |
922 | .use_clustering = ENABLE_CLUSTERING, | |
923 | .slave_alloc = ahd_linux_slave_alloc, | |
924 | .slave_configure = ahd_linux_slave_configure, | |
73a25462 HR |
925 | .target_alloc = ahd_linux_target_alloc, |
926 | .target_destroy = ahd_linux_target_destroy, | |
927 | }; | |
1da177e4 | 928 | |
73a25462 HR |
929 | /******************************** Bus DMA *************************************/ |
930 | int | |
931 | ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent, | |
932 | bus_size_t alignment, bus_size_t boundary, | |
933 | dma_addr_t lowaddr, dma_addr_t highaddr, | |
934 | bus_dma_filter_t *filter, void *filterarg, | |
935 | bus_size_t maxsize, int nsegments, | |
936 | bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag) | |
937 | { | |
938 | bus_dma_tag_t dmat; | |
939 | ||
48813cf9 | 940 | dmat = kmalloc(sizeof(*dmat), GFP_ATOMIC); |
73a25462 HR |
941 | if (dmat == NULL) |
942 | return (ENOMEM); | |
1da177e4 | 943 | |
1da177e4 | 944 | /* |
73a25462 HR |
945 | * Linux is very simplistic about DMA memory. For now don't |
946 | * maintain all specification information. Once Linux supplies | |
947 | * better facilities for doing these operations, or the | |
948 | * needs of this particular driver change, we might need to do | |
949 | * more here. | |
1da177e4 | 950 | */ |
73a25462 HR |
951 | dmat->alignment = alignment; |
952 | dmat->boundary = boundary; | |
953 | dmat->maxsize = maxsize; | |
954 | *ret_tag = dmat; | |
955 | return (0); | |
956 | } | |
1da177e4 | 957 | |
73a25462 HR |
958 | void |
959 | ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat) | |
960 | { | |
48813cf9 | 961 | kfree(dmat); |
73a25462 | 962 | } |
1da177e4 | 963 | |
73a25462 HR |
964 | int |
965 | ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr, | |
966 | int flags, bus_dmamap_t *mapp) | |
967 | { | |
968 | *vaddr = pci_alloc_consistent(ahd->dev_softc, | |
969 | dmat->maxsize, mapp); | |
970 | if (*vaddr == NULL) | |
971 | return (ENOMEM); | |
972 | return(0); | |
973 | } | |
1da177e4 | 974 | |
73a25462 HR |
975 | void |
976 | ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat, | |
977 | void* vaddr, bus_dmamap_t map) | |
978 | { | |
979 | pci_free_consistent(ahd->dev_softc, dmat->maxsize, | |
980 | vaddr, map); | |
981 | } | |
982 | ||
983 | int | |
984 | ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map, | |
985 | void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb, | |
986 | void *cb_arg, int flags) | |
987 | { | |
1da177e4 | 988 | /* |
73a25462 HR |
989 | * Assume for now that this will only be used during |
990 | * initialization and not for per-transaction buffer mapping. | |
1da177e4 | 991 | */ |
73a25462 | 992 | bus_dma_segment_t stack_sg; |
1da177e4 | 993 | |
73a25462 HR |
994 | stack_sg.ds_addr = map; |
995 | stack_sg.ds_len = dmat->maxsize; | |
996 | cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); | |
997 | return (0); | |
998 | } | |
1da177e4 | 999 | |
73a25462 HR |
1000 | void |
1001 | ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
1002 | { | |
1003 | } | |
1da177e4 | 1004 | |
73a25462 HR |
1005 | int |
1006 | ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
1007 | { | |
1008 | /* Nothing to do */ | |
1009 | return (0); | |
1010 | } | |
1da177e4 | 1011 | |
73a25462 | 1012 | /********************* Platform Dependent Functions ***************************/ |
73a25462 HR |
1013 | static void |
1014 | ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value) | |
1015 | { | |
1da177e4 | 1016 | |
73a25462 | 1017 | if ((instance >= 0) |
6391a113 | 1018 | && (instance < ARRAY_SIZE(aic79xx_iocell_info))) { |
73a25462 HR |
1019 | uint8_t *iocell_info; |
1020 | ||
1021 | iocell_info = (uint8_t*)&aic79xx_iocell_info[instance]; | |
1022 | iocell_info[index] = value & 0xFFFF; | |
1023 | if (bootverbose) | |
48813cf9 | 1024 | printk("iocell[%d:%ld] = %d\n", instance, index, value); |
1da177e4 | 1025 | } |
73a25462 | 1026 | } |
1da177e4 | 1027 | |
73a25462 HR |
1028 | static void |
1029 | ahd_linux_setup_tag_info_global(char *p) | |
1030 | { | |
1031 | int tags, i, j; | |
1da177e4 | 1032 | |
73a25462 | 1033 | tags = simple_strtoul(p + 1, NULL, 0) & 0xff; |
48813cf9 | 1034 | printk("Setting Global Tags= %d\n", tags); |
73a25462 | 1035 | |
6391a113 | 1036 | for (i = 0; i < ARRAY_SIZE(aic79xx_tag_info); i++) { |
73a25462 HR |
1037 | for (j = 0; j < AHD_NUM_TARGETS; j++) { |
1038 | aic79xx_tag_info[i].tag_commands[j] = tags; | |
1da177e4 | 1039 | } |
1da177e4 | 1040 | } |
1da177e4 LT |
1041 | } |
1042 | ||
1da177e4 | 1043 | static void |
73a25462 | 1044 | ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) |
1da177e4 | 1045 | { |
1da177e4 | 1046 | |
73a25462 | 1047 | if ((instance >= 0) && (targ >= 0) |
6391a113 | 1048 | && (instance < ARRAY_SIZE(aic79xx_tag_info)) |
73a25462 HR |
1049 | && (targ < AHD_NUM_TARGETS)) { |
1050 | aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; | |
1051 | if (bootverbose) | |
48813cf9 | 1052 | printk("tag_info[%d:%d] = %d\n", instance, targ, value); |
1da177e4 | 1053 | } |
1da177e4 LT |
1054 | } |
1055 | ||
1ff92730 CH |
1056 | static char * |
1057 | ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth, | |
1058 | void (*callback)(u_long, int, int, int32_t), | |
1059 | u_long callback_arg) | |
1060 | { | |
1061 | char *tok_end; | |
1062 | char *tok_end2; | |
1063 | int i; | |
1064 | int instance; | |
1065 | int targ; | |
1066 | int done; | |
1067 | char tok_list[] = {'.', ',', '{', '}', '\0'}; | |
1068 | ||
1069 | /* All options use a ':' name/arg separator */ | |
1070 | if (*opt_arg != ':') | |
1071 | return (opt_arg); | |
1072 | opt_arg++; | |
1073 | instance = -1; | |
1074 | targ = -1; | |
1075 | done = FALSE; | |
1076 | /* | |
1077 | * Restore separator that may be in | |
1078 | * the middle of our option argument. | |
1079 | */ | |
1080 | tok_end = strchr(opt_arg, '\0'); | |
1081 | if (tok_end < end) | |
1082 | *tok_end = ','; | |
1083 | while (!done) { | |
1084 | switch (*opt_arg) { | |
1085 | case '{': | |
1086 | if (instance == -1) { | |
1087 | instance = 0; | |
1088 | } else { | |
1089 | if (depth > 1) { | |
1090 | if (targ == -1) | |
1091 | targ = 0; | |
1092 | } else { | |
48813cf9 | 1093 | printk("Malformed Option %s\n", |
1ff92730 CH |
1094 | opt_name); |
1095 | done = TRUE; | |
1096 | } | |
1097 | } | |
1098 | opt_arg++; | |
1099 | break; | |
1100 | case '}': | |
1101 | if (targ != -1) | |
1102 | targ = -1; | |
1103 | else if (instance != -1) | |
1104 | instance = -1; | |
1105 | opt_arg++; | |
1106 | break; | |
1107 | case ',': | |
1108 | case '.': | |
1109 | if (instance == -1) | |
1110 | done = TRUE; | |
1111 | else if (targ >= 0) | |
1112 | targ++; | |
1113 | else if (instance >= 0) | |
1114 | instance++; | |
1115 | opt_arg++; | |
1116 | break; | |
1117 | case '\0': | |
1118 | done = TRUE; | |
1119 | break; | |
1120 | default: | |
1121 | tok_end = end; | |
1122 | for (i = 0; tok_list[i]; i++) { | |
1123 | tok_end2 = strchr(opt_arg, tok_list[i]); | |
1124 | if ((tok_end2) && (tok_end2 < tok_end)) | |
1125 | tok_end = tok_end2; | |
1126 | } | |
1127 | callback(callback_arg, instance, targ, | |
1128 | simple_strtol(opt_arg, NULL, 0)); | |
1129 | opt_arg = tok_end; | |
1130 | break; | |
1131 | } | |
1132 | } | |
1133 | return (opt_arg); | |
1134 | } | |
1135 | ||
1da177e4 | 1136 | /* |
73a25462 HR |
1137 | * Handle Linux boot parameters. This routine allows for assigning a value |
1138 | * to a parameter with a ':' between the parameter and the value. | |
1139 | * ie. aic79xx=stpwlev:1,extended | |
1da177e4 LT |
1140 | */ |
1141 | static int | |
73a25462 | 1142 | aic79xx_setup(char *s) |
1da177e4 | 1143 | { |
73a25462 HR |
1144 | int i, n; |
1145 | char *p; | |
1146 | char *end; | |
1da177e4 | 1147 | |
980b306a | 1148 | static const struct { |
73a25462 HR |
1149 | const char *name; |
1150 | uint32_t *flag; | |
1151 | } options[] = { | |
1152 | { "extended", &aic79xx_extended }, | |
1153 | { "no_reset", &aic79xx_no_reset }, | |
1154 | { "verbose", &aic79xx_verbose }, | |
1155 | { "allow_memio", &aic79xx_allow_memio}, | |
1da177e4 | 1156 | #ifdef AHD_DEBUG |
73a25462 | 1157 | { "debug", &ahd_debug }, |
1da177e4 | 1158 | #endif |
73a25462 HR |
1159 | { "periodic_otag", &aic79xx_periodic_otag }, |
1160 | { "pci_parity", &aic79xx_pci_parity }, | |
1161 | { "seltime", &aic79xx_seltime }, | |
1162 | { "tag_info", NULL }, | |
1163 | { "global_tag_depth", NULL}, | |
1164 | { "slewrate", NULL }, | |
1165 | { "precomp", NULL }, | |
1166 | { "amplitude", NULL }, | |
3fb08612 | 1167 | { "slowcrc", &aic79xx_slowcrc }, |
73a25462 | 1168 | }; |
1da177e4 | 1169 | |
73a25462 | 1170 | end = strchr(s, '\0'); |
1da177e4 | 1171 | |
73a25462 | 1172 | /* |
6391a113 | 1173 | * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE |
73a25462 | 1174 | * will never be 0 in this case. |
6391a113 TK |
1175 | */ |
1176 | n = 0; | |
73a25462 HR |
1177 | |
1178 | while ((p = strsep(&s, ",.")) != NULL) { | |
1179 | if (*p == '\0') | |
1180 | continue; | |
6391a113 | 1181 | for (i = 0; i < ARRAY_SIZE(options); i++) { |
73a25462 HR |
1182 | |
1183 | n = strlen(options[i].name); | |
1184 | if (strncmp(options[i].name, p, n) == 0) | |
1185 | break; | |
1186 | } | |
6391a113 | 1187 | if (i == ARRAY_SIZE(options)) |
73a25462 HR |
1188 | continue; |
1189 | ||
1190 | if (strncmp(p, "global_tag_depth", n) == 0) { | |
1191 | ahd_linux_setup_tag_info_global(p + n); | |
1192 | } else if (strncmp(p, "tag_info", n) == 0) { | |
1ff92730 | 1193 | s = ahd_parse_brace_option("tag_info", p + n, end, |
73a25462 HR |
1194 | 2, ahd_linux_setup_tag_info, 0); |
1195 | } else if (strncmp(p, "slewrate", n) == 0) { | |
1ff92730 | 1196 | s = ahd_parse_brace_option("slewrate", |
73a25462 HR |
1197 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1198 | AIC79XX_SLEWRATE_INDEX); | |
1199 | } else if (strncmp(p, "precomp", n) == 0) { | |
1ff92730 | 1200 | s = ahd_parse_brace_option("precomp", |
73a25462 HR |
1201 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1202 | AIC79XX_PRECOMP_INDEX); | |
1203 | } else if (strncmp(p, "amplitude", n) == 0) { | |
1ff92730 | 1204 | s = ahd_parse_brace_option("amplitude", |
73a25462 HR |
1205 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1206 | AIC79XX_AMPLITUDE_INDEX); | |
1207 | } else if (p[n] == ':') { | |
1208 | *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); | |
1209 | } else if (!strncmp(p, "verbose", n)) { | |
1210 | *(options[i].flag) = 1; | |
1211 | } else { | |
1212 | *(options[i].flag) ^= 0xFFFFFFFF; | |
1213 | } | |
1214 | } | |
1215 | return 1; | |
1da177e4 LT |
1216 | } |
1217 | ||
73a25462 HR |
1218 | __setup("aic79xx=", aic79xx_setup); |
1219 | ||
1220 | uint32_t aic79xx_verbose; | |
1da177e4 | 1221 | |
1da177e4 | 1222 | int |
73a25462 | 1223 | ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template) |
1da177e4 | 1224 | { |
73a25462 HR |
1225 | char buf[80]; |
1226 | struct Scsi_Host *host; | |
1227 | char *new_name; | |
1228 | u_long s; | |
e7a1ca1d | 1229 | int retval; |
1da177e4 | 1230 | |
73a25462 HR |
1231 | template->name = ahd->description; |
1232 | host = scsi_host_alloc(template, sizeof(struct ahd_softc *)); | |
1233 | if (host == NULL) | |
1da177e4 LT |
1234 | return (ENOMEM); |
1235 | ||
73a25462 | 1236 | *((struct ahd_softc **)host->hostdata) = ahd; |
73a25462 HR |
1237 | ahd->platform_data->host = host; |
1238 | host->can_queue = AHD_MAX_QUEUE; | |
1239 | host->cmd_per_lun = 2; | |
1240 | host->sg_tablesize = AHD_NSEG; | |
1241 | host->this_id = ahd->our_id; | |
1242 | host->irq = ahd->platform_data->irq; | |
1243 | host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1244 | host->max_lun = AHD_NUM_LUNS; | |
1245 | host->max_channel = 0; | |
1246 | host->sg_tablesize = AHD_NSEG; | |
eb221849 | 1247 | ahd_lock(ahd, &s); |
85a46523 | 1248 | ahd_set_unit(ahd, ahd_linux_unit++); |
eb221849 | 1249 | ahd_unlock(ahd, &s); |
73a25462 | 1250 | sprintf(buf, "scsi%d", host->host_no); |
48813cf9 | 1251 | new_name = kmalloc(strlen(buf) + 1, GFP_ATOMIC); |
73a25462 HR |
1252 | if (new_name != NULL) { |
1253 | strcpy(new_name, buf); | |
1254 | ahd_set_name(ahd, new_name); | |
1255 | } | |
1256 | host->unique_id = ahd->unit; | |
1257 | ahd_linux_initialize_scsi_bus(ahd); | |
1258 | ahd_intr_enable(ahd, TRUE); | |
73a25462 HR |
1259 | |
1260 | host->transportt = ahd_linux_transport_template; | |
1261 | ||
e7a1ca1d JJ |
1262 | retval = scsi_add_host(host, &ahd->dev_softc->dev); |
1263 | if (retval) { | |
1264 | printk(KERN_WARNING "aic79xx: scsi_add_host failed\n"); | |
1265 | scsi_host_put(host); | |
1266 | return retval; | |
1267 | } | |
1268 | ||
73a25462 | 1269 | scsi_scan_host(host); |
e7a1ca1d | 1270 | return 0; |
1da177e4 LT |
1271 | } |
1272 | ||
73a25462 HR |
1273 | /* |
1274 | * Place the SCSI bus into a known state by either resetting it, | |
1275 | * or forcing transfer negotiations on the next command to any | |
1276 | * target. | |
1277 | */ | |
1278 | static void | |
1279 | ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd) | |
1da177e4 | 1280 | { |
73a25462 HR |
1281 | u_int target_id; |
1282 | u_int numtarg; | |
eb221849 | 1283 | unsigned long s; |
1da177e4 | 1284 | |
73a25462 HR |
1285 | target_id = 0; |
1286 | numtarg = 0; | |
1287 | ||
1288 | if (aic79xx_no_reset != 0) | |
1289 | ahd->flags &= ~AHD_RESET_BUS_A; | |
1290 | ||
1291 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) | |
1292 | ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE); | |
1293 | else | |
1294 | numtarg = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1da177e4 | 1295 | |
eb221849 HR |
1296 | ahd_lock(ahd, &s); |
1297 | ||
1da177e4 | 1298 | /* |
73a25462 HR |
1299 | * Force negotiation to async for all targets that |
1300 | * will not see an initial bus reset. | |
1da177e4 | 1301 | */ |
73a25462 HR |
1302 | for (; target_id < numtarg; target_id++) { |
1303 | struct ahd_devinfo devinfo; | |
1304 | struct ahd_initiator_tinfo *tinfo; | |
1305 | struct ahd_tmode_tstate *tstate; | |
1306 | ||
1307 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
1308 | target_id, &tstate); | |
1309 | ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, | |
1310 | CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); | |
1311 | ahd_update_neg_request(ahd, &devinfo, tstate, | |
1312 | tinfo, AHD_NEG_ALWAYS); | |
1313 | } | |
eb221849 | 1314 | ahd_unlock(ahd, &s); |
73a25462 HR |
1315 | /* Give the bus some time to recover */ |
1316 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) { | |
1317 | ahd_freeze_simq(ahd); | |
eb221849 HR |
1318 | msleep(AIC79XX_RESET_DELAY); |
1319 | ahd_release_simq(ahd); | |
73a25462 | 1320 | } |
1da177e4 LT |
1321 | } |
1322 | ||
1323 | int | |
73a25462 | 1324 | ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) |
1da177e4 | 1325 | { |
73a25462 | 1326 | ahd->platform_data = |
48813cf9 | 1327 | kmalloc(sizeof(struct ahd_platform_data), GFP_ATOMIC); |
73a25462 HR |
1328 | if (ahd->platform_data == NULL) |
1329 | return (ENOMEM); | |
1330 | memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); | |
1331 | ahd->platform_data->irq = AHD_LINUX_NOIRQ; | |
1332 | ahd_lockinit(ahd); | |
73a25462 | 1333 | ahd->seltime = (aic79xx_seltime & 0x3) << 4; |
1da177e4 LT |
1334 | return (0); |
1335 | } | |
1336 | ||
73a25462 HR |
1337 | void |
1338 | ahd_platform_free(struct ahd_softc *ahd) | |
1da177e4 | 1339 | { |
73a25462 | 1340 | struct scsi_target *starget; |
f89d0a4e | 1341 | int i; |
1da177e4 | 1342 | |
73a25462 | 1343 | if (ahd->platform_data != NULL) { |
73a25462 HR |
1344 | /* destroy all of the device and target objects */ |
1345 | for (i = 0; i < AHD_NUM_TARGETS; i++) { | |
1346 | starget = ahd->platform_data->starget[i]; | |
1347 | if (starget != NULL) { | |
73a25462 HR |
1348 | ahd->platform_data->starget[i] = NULL; |
1349 | } | |
1350 | } | |
1da177e4 | 1351 | |
73a25462 HR |
1352 | if (ahd->platform_data->irq != AHD_LINUX_NOIRQ) |
1353 | free_irq(ahd->platform_data->irq, ahd); | |
1354 | if (ahd->tags[0] == BUS_SPACE_PIO | |
1355 | && ahd->bshs[0].ioport != 0) | |
1356 | release_region(ahd->bshs[0].ioport, 256); | |
1357 | if (ahd->tags[1] == BUS_SPACE_PIO | |
1358 | && ahd->bshs[1].ioport != 0) | |
1359 | release_region(ahd->bshs[1].ioport, 256); | |
1360 | if (ahd->tags[0] == BUS_SPACE_MEMIO | |
1361 | && ahd->bshs[0].maddr != NULL) { | |
1362 | iounmap(ahd->bshs[0].maddr); | |
1363 | release_mem_region(ahd->platform_data->mem_busaddr, | |
1364 | 0x1000); | |
1365 | } | |
97af50f6 JB |
1366 | if (ahd->platform_data->host) |
1367 | scsi_host_put(ahd->platform_data->host); | |
1368 | ||
48813cf9 | 1369 | kfree(ahd->platform_data); |
73a25462 | 1370 | } |
1da177e4 LT |
1371 | } |
1372 | ||
73a25462 HR |
1373 | void |
1374 | ahd_platform_init(struct ahd_softc *ahd) | |
1da177e4 | 1375 | { |
73a25462 HR |
1376 | /* |
1377 | * Lookup and commit any modified IO Cell options. | |
1378 | */ | |
6391a113 | 1379 | if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) { |
980b306a | 1380 | const struct ahd_linux_iocell_opts *iocell_opts; |
1da177e4 | 1381 | |
73a25462 HR |
1382 | iocell_opts = &aic79xx_iocell_info[ahd->unit]; |
1383 | if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP) | |
1384 | AHD_SET_PRECOMP(ahd, iocell_opts->precomp); | |
1385 | if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE) | |
1386 | AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate); | |
1387 | if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE) | |
1388 | AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude); | |
1da177e4 | 1389 | } |
1da177e4 | 1390 | |
1da177e4 LT |
1391 | } |
1392 | ||
73a25462 HR |
1393 | void |
1394 | ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1395 | { |
73a25462 HR |
1396 | ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), |
1397 | SCB_GET_CHANNEL(ahd, scb), | |
1398 | SCB_GET_LUN(scb), SCB_LIST_NULL, | |
1399 | ROLE_UNKNOWN, CAM_REQUEUE_REQ); | |
1da177e4 LT |
1400 | } |
1401 | ||
73a25462 | 1402 | void |
f89d0a4e HR |
1403 | ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, |
1404 | struct ahd_devinfo *devinfo, ahd_queue_alg alg) | |
1da177e4 | 1405 | { |
73a25462 | 1406 | struct ahd_linux_device *dev; |
73a25462 HR |
1407 | int was_queuing; |
1408 | int now_queuing; | |
1da177e4 | 1409 | |
73a25462 HR |
1410 | if (sdev == NULL) |
1411 | return; | |
1da177e4 | 1412 | |
73a25462 | 1413 | dev = scsi_transport_device_data(sdev); |
1da177e4 | 1414 | |
73a25462 HR |
1415 | if (dev == NULL) |
1416 | return; | |
1417 | was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); | |
1418 | switch (alg) { | |
1419 | default: | |
1420 | case AHD_QUEUE_NONE: | |
1421 | now_queuing = 0; | |
1422 | break; | |
1423 | case AHD_QUEUE_BASIC: | |
1424 | now_queuing = AHD_DEV_Q_BASIC; | |
1425 | break; | |
1426 | case AHD_QUEUE_TAGGED: | |
1427 | now_queuing = AHD_DEV_Q_TAGGED; | |
1428 | break; | |
1429 | } | |
1430 | if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0 | |
1431 | && (was_queuing != now_queuing) | |
1432 | && (dev->active != 0)) { | |
1433 | dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY; | |
1434 | dev->qfrozen++; | |
1da177e4 | 1435 | } |
1da177e4 | 1436 | |
73a25462 HR |
1437 | dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG); |
1438 | if (now_queuing) { | |
1439 | u_int usertags; | |
1da177e4 | 1440 | |
73a25462 HR |
1441 | usertags = ahd_linux_user_tagdepth(ahd, devinfo); |
1442 | if (!was_queuing) { | |
1443 | /* | |
25985edc | 1444 | * Start out aggressively and allow our |
73a25462 HR |
1445 | * dynamic queue depth algorithm to take |
1446 | * care of the rest. | |
1447 | */ | |
1448 | dev->maxtags = usertags; | |
1449 | dev->openings = dev->maxtags - dev->active; | |
1da177e4 | 1450 | } |
73a25462 HR |
1451 | if (dev->maxtags == 0) { |
1452 | /* | |
1453 | * Queueing is disabled by the user. | |
1454 | */ | |
1455 | dev->openings = 1; | |
1456 | } else if (alg == AHD_QUEUE_TAGGED) { | |
1457 | dev->flags |= AHD_DEV_Q_TAGGED; | |
1458 | if (aic79xx_periodic_otag != 0) | |
1459 | dev->flags |= AHD_DEV_PERIODIC_OTAG; | |
1460 | } else | |
1461 | dev->flags |= AHD_DEV_Q_BASIC; | |
1462 | } else { | |
1463 | /* We can only have one opening. */ | |
1464 | dev->maxtags = 0; | |
1465 | dev->openings = 1 - dev->active; | |
1da177e4 | 1466 | } |
1da177e4 | 1467 | |
73a25462 HR |
1468 | switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { |
1469 | case AHD_DEV_Q_BASIC: | |
0aa800db HR |
1470 | scsi_set_tag_type(sdev, MSG_SIMPLE_TASK); |
1471 | scsi_activate_tcq(sdev, dev->openings + dev->active); | |
73a25462 HR |
1472 | break; |
1473 | case AHD_DEV_Q_TAGGED: | |
0aa800db HR |
1474 | scsi_set_tag_type(sdev, MSG_ORDERED_TASK); |
1475 | scsi_activate_tcq(sdev, dev->openings + dev->active); | |
73a25462 HR |
1476 | break; |
1477 | default: | |
1da177e4 | 1478 | /* |
73a25462 HR |
1479 | * We allow the OS to queue 2 untagged transactions to |
1480 | * us at any time even though we can only execute them | |
1481 | * serially on the controller/device. This should | |
1482 | * remove some latency. | |
1da177e4 | 1483 | */ |
0aa800db | 1484 | scsi_deactivate_tcq(sdev, 1); |
73a25462 | 1485 | break; |
1da177e4 | 1486 | } |
1da177e4 LT |
1487 | } |
1488 | ||
73a25462 HR |
1489 | int |
1490 | ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, | |
1491 | int lun, u_int tag, role_t role, uint32_t status) | |
1da177e4 | 1492 | { |
73a25462 | 1493 | return 0; |
1da177e4 LT |
1494 | } |
1495 | ||
73a25462 HR |
1496 | static u_int |
1497 | ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) | |
1da177e4 | 1498 | { |
73a25462 HR |
1499 | static int warned_user; |
1500 | u_int tags; | |
1da177e4 | 1501 | |
73a25462 HR |
1502 | tags = 0; |
1503 | if ((ahd->user_discenable & devinfo->target_mask) != 0) { | |
6391a113 | 1504 | if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) { |
73a25462 HR |
1505 | |
1506 | if (warned_user == 0) { | |
48813cf9 | 1507 | printk(KERN_WARNING |
73a25462 HR |
1508 | "aic79xx: WARNING: Insufficient tag_info instances\n" |
1509 | "aic79xx: for installed controllers. Using defaults\n" | |
1510 | "aic79xx: Please update the aic79xx_tag_info array in\n" | |
1511 | "aic79xx: the aic79xx_osm.c source file.\n"); | |
1512 | warned_user++; | |
1513 | } | |
1514 | tags = AHD_MAX_QUEUE; | |
1515 | } else { | |
1516 | adapter_tag_info_t *tag_info; | |
1517 | ||
1518 | tag_info = &aic79xx_tag_info[ahd->unit]; | |
1519 | tags = tag_info->tag_commands[devinfo->target_offset]; | |
1520 | if (tags > AHD_MAX_QUEUE) | |
1521 | tags = AHD_MAX_QUEUE; | |
1da177e4 LT |
1522 | } |
1523 | } | |
73a25462 | 1524 | return (tags); |
1da177e4 LT |
1525 | } |
1526 | ||
1527 | /* | |
73a25462 | 1528 | * Determines the queue depth for a given device. |
1da177e4 LT |
1529 | */ |
1530 | static void | |
73a25462 | 1531 | ahd_linux_device_queue_depth(struct scsi_device *sdev) |
1da177e4 | 1532 | { |
73a25462 HR |
1533 | struct ahd_devinfo devinfo; |
1534 | u_int tags; | |
1535 | struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
1da177e4 | 1536 | |
73a25462 HR |
1537 | ahd_compile_devinfo(&devinfo, |
1538 | ahd->our_id, | |
1539 | sdev->sdev_target->id, sdev->lun, | |
1540 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1541 | ROLE_INITIATOR); | |
1542 | tags = ahd_linux_user_tagdepth(ahd, &devinfo); | |
1543 | if (tags != 0 && sdev->tagged_supported != 0) { | |
1da177e4 | 1544 | |
f89d0a4e HR |
1545 | ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_TAGGED); |
1546 | ahd_send_async(ahd, devinfo.channel, devinfo.target, | |
1547 | devinfo.lun, AC_TRANSFER_NEG); | |
73a25462 | 1548 | ahd_print_devinfo(ahd, &devinfo); |
48813cf9 | 1549 | printk("Tagged Queuing enabled. Depth %d\n", tags); |
73a25462 | 1550 | } else { |
f89d0a4e HR |
1551 | ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_NONE); |
1552 | ahd_send_async(ahd, devinfo.channel, devinfo.target, | |
1553 | devinfo.lun, AC_TRANSFER_NEG); | |
73a25462 HR |
1554 | } |
1555 | } | |
1da177e4 | 1556 | |
73a25462 HR |
1557 | static int |
1558 | ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, | |
1559 | struct scsi_cmnd *cmd) | |
1560 | { | |
1561 | struct scb *scb; | |
1562 | struct hardware_scb *hscb; | |
1563 | struct ahd_initiator_tinfo *tinfo; | |
1564 | struct ahd_tmode_tstate *tstate; | |
1565 | u_int col_idx; | |
1566 | uint16_t mask; | |
7b22da38 | 1567 | unsigned long flags; |
4c688fc7 | 1568 | int nseg; |
7b22da38 | 1569 | |
2505873a FT |
1570 | nseg = scsi_dma_map(cmd); |
1571 | if (nseg < 0) | |
1572 | return SCSI_MLQUEUE_HOST_BUSY; | |
1573 | ||
7b22da38 | 1574 | ahd_lock(ahd, &flags); |
1da177e4 LT |
1575 | |
1576 | /* | |
73a25462 | 1577 | * Get an scb to use. |
1da177e4 | 1578 | */ |
73a25462 HR |
1579 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
1580 | cmd->device->id, &tstate); | |
1581 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 | |
1582 | || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { | |
1583 | col_idx = AHD_NEVER_COL_IDX; | |
1584 | } else { | |
1585 | col_idx = AHD_BUILD_COL_IDX(cmd->device->id, | |
1586 | cmd->device->lun); | |
1587 | } | |
1588 | if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { | |
1589 | ahd->flags |= AHD_RESOURCE_SHORTAGE; | |
7b22da38 | 1590 | ahd_unlock(ahd, &flags); |
2505873a | 1591 | scsi_dma_unmap(cmd); |
73a25462 | 1592 | return SCSI_MLQUEUE_HOST_BUSY; |
1da177e4 | 1593 | } |
1da177e4 | 1594 | |
73a25462 HR |
1595 | scb->io_ctx = cmd; |
1596 | scb->platform_data->dev = dev; | |
1597 | hscb = scb->hscb; | |
1598 | cmd->host_scribble = (char *)scb; | |
1da177e4 | 1599 | |
73a25462 HR |
1600 | /* |
1601 | * Fill out basics of the HSCB. | |
1602 | */ | |
1603 | hscb->control = 0; | |
1604 | hscb->scsiid = BUILD_SCSIID(ahd, cmd); | |
1605 | hscb->lun = cmd->device->lun; | |
1606 | scb->hscb->task_management = 0; | |
1607 | mask = SCB_GET_TARGET_MASK(ahd, scb); | |
1da177e4 | 1608 | |
73a25462 HR |
1609 | if ((ahd->user_discenable & mask) != 0) |
1610 | hscb->control |= DISCENB; | |
1da177e4 | 1611 | |
73a25462 HR |
1612 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) |
1613 | scb->flags |= SCB_PACKETIZED; | |
1da177e4 | 1614 | |
73a25462 HR |
1615 | if ((tstate->auto_negotiate & mask) != 0) { |
1616 | scb->flags |= SCB_AUTO_NEGOTIATE; | |
1617 | scb->hscb->control |= MK_MESSAGE; | |
1618 | } | |
1619 | ||
1620 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { | |
1621 | int msg_bytes; | |
1622 | uint8_t tag_msgs[2]; | |
1623 | ||
1624 | msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); | |
1625 | if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { | |
1626 | hscb->control |= tag_msgs[0]; | |
1627 | if (tag_msgs[0] == MSG_ORDERED_TASK) | |
1628 | dev->commands_since_idle_or_otag = 0; | |
1629 | } else | |
1630 | if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH | |
1631 | && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { | |
1632 | hscb->control |= MSG_ORDERED_TASK; | |
1633 | dev->commands_since_idle_or_otag = 0; | |
1634 | } else { | |
1635 | hscb->control |= MSG_SIMPLE_TASK; | |
1da177e4 | 1636 | } |
73a25462 | 1637 | } |
1da177e4 | 1638 | |
73a25462 HR |
1639 | hscb->cdb_len = cmd->cmd_len; |
1640 | memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); | |
1641 | ||
1642 | scb->platform_data->xfer_len = 0; | |
1643 | ahd_set_residual(scb, 0); | |
1644 | ahd_set_sense_residual(scb, 0); | |
1645 | scb->sg_count = 0; | |
4c688fc7 | 1646 | |
4c688fc7 FT |
1647 | if (nseg > 0) { |
1648 | void *sg = scb->sg_list; | |
1649 | struct scatterlist *cur_seg; | |
1650 | int i; | |
1651 | ||
73a25462 | 1652 | scb->platform_data->xfer_len = 0; |
4c688fc7 FT |
1653 | |
1654 | scsi_for_each_sg(cmd, cur_seg, nseg, i) { | |
73a25462 HR |
1655 | dma_addr_t addr; |
1656 | bus_size_t len; | |
1657 | ||
1658 | addr = sg_dma_address(cur_seg); | |
1659 | len = sg_dma_len(cur_seg); | |
1660 | scb->platform_data->xfer_len += len; | |
1661 | sg = ahd_sg_setup(ahd, scb, sg, addr, len, | |
4c688fc7 | 1662 | i == (nseg - 1)); |
1da177e4 | 1663 | } |
1da177e4 | 1664 | } |
73a25462 HR |
1665 | |
1666 | LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); | |
1667 | dev->openings--; | |
1668 | dev->active++; | |
1669 | dev->commands_issued++; | |
1670 | ||
1671 | if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) | |
1672 | dev->commands_since_idle_or_otag++; | |
1673 | scb->flags |= SCB_ACTIVE; | |
1674 | ahd_queue_scb(ahd, scb); | |
1675 | ||
7b22da38 HR |
1676 | ahd_unlock(ahd, &flags); |
1677 | ||
73a25462 | 1678 | return 0; |
1da177e4 LT |
1679 | } |
1680 | ||
73a25462 HR |
1681 | /* |
1682 | * SCSI controller interrupt handler. | |
1683 | */ | |
1684 | irqreturn_t | |
7d12e780 | 1685 | ahd_linux_isr(int irq, void *dev_id) |
1da177e4 | 1686 | { |
73a25462 HR |
1687 | struct ahd_softc *ahd; |
1688 | u_long flags; | |
1689 | int ours; | |
1da177e4 | 1690 | |
73a25462 HR |
1691 | ahd = (struct ahd_softc *) dev_id; |
1692 | ahd_lock(ahd, &flags); | |
1693 | ours = ahd_intr(ahd); | |
1694 | ahd_unlock(ahd, &flags); | |
1695 | return IRQ_RETVAL(ours); | |
1da177e4 LT |
1696 | } |
1697 | ||
1da177e4 | 1698 | void |
73a25462 | 1699 | ahd_send_async(struct ahd_softc *ahd, char channel, |
f89d0a4e | 1700 | u_int target, u_int lun, ac_code code) |
1da177e4 | 1701 | { |
73a25462 HR |
1702 | switch (code) { |
1703 | case AC_TRANSFER_NEG: | |
1704 | { | |
1705 | char buf[80]; | |
1706 | struct scsi_target *starget; | |
73a25462 HR |
1707 | struct info_str info; |
1708 | struct ahd_initiator_tinfo *tinfo; | |
1709 | struct ahd_tmode_tstate *tstate; | |
1710 | unsigned int target_ppr_options; | |
1da177e4 | 1711 | |
73a25462 HR |
1712 | BUG_ON(target == CAM_TARGET_WILDCARD); |
1713 | ||
1714 | info.buffer = buf; | |
1715 | info.length = sizeof(buf); | |
1716 | info.offset = 0; | |
1717 | info.pos = 0; | |
1718 | tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, | |
1719 | target, &tstate); | |
1720 | ||
1721 | /* | |
1722 | * Don't bother reporting results while | |
1723 | * negotiations are still pending. | |
1724 | */ | |
1725 | if (tinfo->curr.period != tinfo->goal.period | |
1726 | || tinfo->curr.width != tinfo->goal.width | |
1727 | || tinfo->curr.offset != tinfo->goal.offset | |
1728 | || tinfo->curr.ppr_options != tinfo->goal.ppr_options) | |
1729 | if (bootverbose == 0) | |
1730 | break; | |
1731 | ||
1732 | /* | |
1733 | * Don't bother reporting results that | |
1734 | * are identical to those last reported. | |
1735 | */ | |
1736 | starget = ahd->platform_data->starget[target]; | |
fc789a93 | 1737 | if (starget == NULL) |
73a25462 HR |
1738 | break; |
1739 | ||
1740 | target_ppr_options = | |
1741 | (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) | |
1742 | + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) | |
3f40d7d6 JB |
1743 | + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) |
1744 | + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) | |
1745 | + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) | |
1746 | + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) | |
88ff29a4 JB |
1747 | + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) |
1748 | + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); | |
73a25462 HR |
1749 | |
1750 | if (tinfo->curr.period == spi_period(starget) | |
1751 | && tinfo->curr.width == spi_width(starget) | |
1752 | && tinfo->curr.offset == spi_offset(starget) | |
1753 | && tinfo->curr.ppr_options == target_ppr_options) | |
1754 | if (bootverbose == 0) | |
1755 | break; | |
1756 | ||
1757 | spi_period(starget) = tinfo->curr.period; | |
1758 | spi_width(starget) = tinfo->curr.width; | |
1759 | spi_offset(starget) = tinfo->curr.offset; | |
a4b53a11 HR |
1760 | spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; |
1761 | spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; | |
1762 | spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; | |
3f40d7d6 JB |
1763 | spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; |
1764 | spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; | |
1765 | spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; | |
1766 | spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; | |
88ff29a4 | 1767 | spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; |
73a25462 | 1768 | spi_display_xfer_agreement(starget); |
1da177e4 | 1769 | break; |
73a25462 HR |
1770 | } |
1771 | case AC_SENT_BDR: | |
1772 | { | |
1773 | WARN_ON(lun != CAM_LUN_WILDCARD); | |
1774 | scsi_report_device_reset(ahd->platform_data->host, | |
1775 | channel - 'A', target); | |
1da177e4 LT |
1776 | break; |
1777 | } | |
73a25462 HR |
1778 | case AC_BUS_RESET: |
1779 | if (ahd->platform_data->host != NULL) { | |
1780 | scsi_report_bus_reset(ahd->platform_data->host, | |
1781 | channel - 'A'); | |
1da177e4 | 1782 | } |
73a25462 HR |
1783 | break; |
1784 | default: | |
1785 | panic("ahd_send_async: Unexpected async event"); | |
1786 | } | |
1da177e4 LT |
1787 | } |
1788 | ||
73a25462 HR |
1789 | /* |
1790 | * Calls the higher level scsi done function and frees the scb. | |
1791 | */ | |
1792 | void | |
1793 | ahd_done(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1794 | { |
73a25462 HR |
1795 | struct scsi_cmnd *cmd; |
1796 | struct ahd_linux_device *dev; | |
1da177e4 | 1797 | |
73a25462 | 1798 | if ((scb->flags & SCB_ACTIVE) == 0) { |
48813cf9 | 1799 | printk("SCB %d done'd twice\n", SCB_GET_TAG(scb)); |
73a25462 HR |
1800 | ahd_dump_card_state(ahd); |
1801 | panic("Stopping for safety"); | |
1da177e4 | 1802 | } |
73a25462 HR |
1803 | LIST_REMOVE(scb, pending_links); |
1804 | cmd = scb->io_ctx; | |
1805 | dev = scb->platform_data->dev; | |
1806 | dev->active--; | |
1807 | dev->openings++; | |
1808 | if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) { | |
1809 | cmd->result &= ~(CAM_DEV_QFRZN << 16); | |
1810 | dev->qfrozen--; | |
1811 | } | |
1812 | ahd_linux_unmap_scb(ahd, scb); | |
1da177e4 LT |
1813 | |
1814 | /* | |
73a25462 HR |
1815 | * Guard against stale sense data. |
1816 | * The Linux mid-layer assumes that sense | |
1817 | * was retrieved anytime the first byte of | |
1818 | * the sense buffer looks "sane". | |
1da177e4 | 1819 | */ |
73a25462 HR |
1820 | cmd->sense_buffer[0] = 0; |
1821 | if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) { | |
1822 | uint32_t amount_xferred; | |
1da177e4 | 1823 | |
73a25462 HR |
1824 | amount_xferred = |
1825 | ahd_get_transfer_length(scb) - ahd_get_residual(scb); | |
1826 | if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) { | |
1da177e4 | 1827 | #ifdef AHD_DEBUG |
73a25462 HR |
1828 | if ((ahd_debug & AHD_SHOW_MISC) != 0) { |
1829 | ahd_print_path(ahd, scb); | |
48813cf9 | 1830 | printk("Set CAM_UNCOR_PARITY\n"); |
73a25462 | 1831 | } |
1da177e4 | 1832 | #endif |
73a25462 HR |
1833 | ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); |
1834 | #ifdef AHD_REPORT_UNDERFLOWS | |
1da177e4 | 1835 | /* |
73a25462 HR |
1836 | * This code is disabled by default as some |
1837 | * clients of the SCSI system do not properly | |
1838 | * initialize the underflow parameter. This | |
1839 | * results in spurious termination of commands | |
1840 | * that complete as expected (e.g. underflow is | |
1841 | * allowed as command can return variable amounts | |
1842 | * of data. | |
1da177e4 | 1843 | */ |
73a25462 HR |
1844 | } else if (amount_xferred < scb->io_ctx->underflow) { |
1845 | u_int i; | |
1da177e4 | 1846 | |
73a25462 | 1847 | ahd_print_path(ahd, scb); |
48813cf9 | 1848 | printk("CDB:"); |
73a25462 | 1849 | for (i = 0; i < scb->io_ctx->cmd_len; i++) |
48813cf9 PE |
1850 | printk(" 0x%x", scb->io_ctx->cmnd[i]); |
1851 | printk("\n"); | |
73a25462 | 1852 | ahd_print_path(ahd, scb); |
48813cf9 | 1853 | printk("Saw underflow (%ld of %ld bytes). " |
73a25462 HR |
1854 | "Treated as error\n", |
1855 | ahd_get_residual(scb), | |
1856 | ahd_get_transfer_length(scb)); | |
1857 | ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); | |
1858 | #endif | |
1859 | } else { | |
1860 | ahd_set_transaction_status(scb, CAM_REQ_CMP); | |
1da177e4 | 1861 | } |
73a25462 HR |
1862 | } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { |
1863 | ahd_linux_handle_scsi_status(ahd, cmd->device, scb); | |
1864 | } | |
1da177e4 | 1865 | |
73a25462 HR |
1866 | if (dev->openings == 1 |
1867 | && ahd_get_transaction_status(scb) == CAM_REQ_CMP | |
1868 | && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL) | |
1869 | dev->tag_success_count++; | |
1870 | /* | |
1871 | * Some devices deal with temporary internal resource | |
1872 | * shortages by returning queue full. When the queue | |
1873 | * full occurrs, we throttle back. Slowly try to get | |
1874 | * back to our previous queue depth. | |
1875 | */ | |
1876 | if ((dev->openings + dev->active) < dev->maxtags | |
1877 | && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) { | |
1878 | dev->tag_success_count = 0; | |
1879 | dev->openings++; | |
1880 | } | |
1da177e4 | 1881 | |
73a25462 HR |
1882 | if (dev->active == 0) |
1883 | dev->commands_since_idle_or_otag = 0; | |
1da177e4 | 1884 | |
73a25462 | 1885 | if ((scb->flags & SCB_RECOVERY_SCB) != 0) { |
48813cf9 | 1886 | printk("Recovery SCB completes\n"); |
73a25462 HR |
1887 | if (ahd_get_transaction_status(scb) == CAM_BDR_SENT |
1888 | || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) | |
1889 | ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); | |
7b22da38 HR |
1890 | |
1891 | if (ahd->platform_data->eh_done) | |
1892 | complete(ahd->platform_data->eh_done); | |
1da177e4 | 1893 | } |
73a25462 HR |
1894 | |
1895 | ahd_free_scb(ahd, scb); | |
1896 | ahd_linux_queue_cmd_complete(ahd, cmd); | |
1da177e4 LT |
1897 | } |
1898 | ||
1899 | static void | |
73a25462 HR |
1900 | ahd_linux_handle_scsi_status(struct ahd_softc *ahd, |
1901 | struct scsi_device *sdev, struct scb *scb) | |
1da177e4 | 1902 | { |
73a25462 HR |
1903 | struct ahd_devinfo devinfo; |
1904 | struct ahd_linux_device *dev = scsi_transport_device_data(sdev); | |
1da177e4 | 1905 | |
73a25462 HR |
1906 | ahd_compile_devinfo(&devinfo, |
1907 | ahd->our_id, | |
1908 | sdev->sdev_target->id, sdev->lun, | |
1909 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1910 | ROLE_INITIATOR); | |
1911 | ||
1912 | /* | |
1913 | * We don't currently trust the mid-layer to | |
1914 | * properly deal with queue full or busy. So, | |
1915 | * when one occurs, we tell the mid-layer to | |
1916 | * unconditionally requeue the command to us | |
1917 | * so that we can retry it ourselves. We also | |
1918 | * implement our own throttling mechanism so | |
1919 | * we don't clobber the device with too many | |
1920 | * commands. | |
1921 | */ | |
1922 | switch (ahd_get_scsi_status(scb)) { | |
1923 | default: | |
1924 | break; | |
1925 | case SCSI_STATUS_CHECK_COND: | |
1926 | case SCSI_STATUS_CMD_TERMINATED: | |
1927 | { | |
1928 | struct scsi_cmnd *cmd; | |
1da177e4 LT |
1929 | |
1930 | /* | |
73a25462 HR |
1931 | * Copy sense information to the OS's cmd |
1932 | * structure if it is available. | |
1da177e4 | 1933 | */ |
73a25462 HR |
1934 | cmd = scb->io_ctx; |
1935 | if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) { | |
1936 | struct scsi_status_iu_header *siu; | |
1937 | u_int sense_size; | |
1938 | u_int sense_offset; | |
1da177e4 | 1939 | |
73a25462 | 1940 | if (scb->flags & SCB_SENSE) { |
6d07cb71 | 1941 | sense_size = min(sizeof(struct scsi_sense_data) |
73a25462 | 1942 | - ahd_get_sense_residual(scb), |
b80ca4f7 | 1943 | (u_long)SCSI_SENSE_BUFFERSIZE); |
73a25462 HR |
1944 | sense_offset = 0; |
1945 | } else { | |
1946 | /* | |
1947 | * Copy only the sense data into the provided | |
1948 | * buffer. | |
1949 | */ | |
1950 | siu = (struct scsi_status_iu_header *) | |
1951 | scb->sense_data; | |
6d07cb71 AL |
1952 | sense_size = min_t(size_t, |
1953 | scsi_4btoul(siu->sense_length), | |
b80ca4f7 | 1954 | SCSI_SENSE_BUFFERSIZE); |
73a25462 HR |
1955 | sense_offset = SIU_SENSE_OFFSET(siu); |
1956 | } | |
1da177e4 | 1957 | |
b80ca4f7 | 1958 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
73a25462 HR |
1959 | memcpy(cmd->sense_buffer, |
1960 | ahd_get_sense_buf(ahd, scb) | |
1961 | + sense_offset, sense_size); | |
1962 | cmd->result |= (DRIVER_SENSE << 24); | |
1da177e4 | 1963 | |
1da177e4 | 1964 | #ifdef AHD_DEBUG |
73a25462 HR |
1965 | if (ahd_debug & AHD_SHOW_SENSE) { |
1966 | int i; | |
1da177e4 | 1967 | |
48813cf9 | 1968 | printk("Copied %d bytes of sense data at %d:", |
73a25462 HR |
1969 | sense_size, sense_offset); |
1970 | for (i = 0; i < sense_size; i++) { | |
1da177e4 | 1971 | if ((i & 0xF) == 0) |
48813cf9 PE |
1972 | printk("\n"); |
1973 | printk("0x%x ", cmd->sense_buffer[i]); | |
1da177e4 | 1974 | } |
48813cf9 | 1975 | printk("\n"); |
1da177e4 LT |
1976 | } |
1977 | #endif | |
1da177e4 LT |
1978 | } |
1979 | break; | |
73a25462 HR |
1980 | } |
1981 | case SCSI_STATUS_QUEUE_FULL: | |
1982 | /* | |
1983 | * By the time the core driver has returned this | |
1984 | * command, all other commands that were queued | |
1985 | * to us but not the device have been returned. | |
1986 | * This ensures that dev->active is equal to | |
1987 | * the number of commands actually queued to | |
1988 | * the device. | |
1989 | */ | |
1990 | dev->tag_success_count = 0; | |
1991 | if (dev->active != 0) { | |
1da177e4 | 1992 | /* |
73a25462 HR |
1993 | * Drop our opening count to the number |
1994 | * of commands currently outstanding. | |
1da177e4 | 1995 | */ |
73a25462 | 1996 | dev->openings = 0; |
1da177e4 | 1997 | #ifdef AHD_DEBUG |
73a25462 HR |
1998 | if ((ahd_debug & AHD_SHOW_QFULL) != 0) { |
1999 | ahd_print_path(ahd, scb); | |
48813cf9 | 2000 | printk("Dropping tag count to %d\n", |
73a25462 | 2001 | dev->active); |
1da177e4 LT |
2002 | } |
2003 | #endif | |
73a25462 | 2004 | if (dev->active == dev->tags_on_last_queuefull) { |
1da177e4 | 2005 | |
73a25462 | 2006 | dev->last_queuefull_same_count++; |
1da177e4 | 2007 | /* |
73a25462 HR |
2008 | * If we repeatedly see a queue full |
2009 | * at the same queue depth, this | |
2010 | * device has a fixed number of tag | |
2011 | * slots. Lock in this tag depth | |
2012 | * so we stop seeing queue fulls from | |
2013 | * this device. | |
1da177e4 | 2014 | */ |
73a25462 HR |
2015 | if (dev->last_queuefull_same_count |
2016 | == AHD_LOCK_TAGS_COUNT) { | |
2017 | dev->maxtags = dev->active; | |
2018 | ahd_print_path(ahd, scb); | |
48813cf9 | 2019 | printk("Locking max tag count at %d\n", |
73a25462 | 2020 | dev->active); |
1da177e4 | 2021 | } |
73a25462 HR |
2022 | } else { |
2023 | dev->tags_on_last_queuefull = dev->active; | |
2024 | dev->last_queuefull_same_count = 0; | |
1da177e4 | 2025 | } |
73a25462 HR |
2026 | ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); |
2027 | ahd_set_scsi_status(scb, SCSI_STATUS_OK); | |
f89d0a4e | 2028 | ahd_platform_set_tags(ahd, sdev, &devinfo, |
73a25462 HR |
2029 | (dev->flags & AHD_DEV_Q_BASIC) |
2030 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
1da177e4 LT |
2031 | break; |
2032 | } | |
1da177e4 | 2033 | /* |
73a25462 HR |
2034 | * Drop down to a single opening, and treat this |
2035 | * as if the target returned BUSY SCSI status. | |
1da177e4 | 2036 | */ |
73a25462 | 2037 | dev->openings = 1; |
f89d0a4e | 2038 | ahd_platform_set_tags(ahd, sdev, &devinfo, |
73a25462 HR |
2039 | (dev->flags & AHD_DEV_Q_BASIC) |
2040 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
2041 | ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); | |
2042 | } | |
1da177e4 LT |
2043 | } |
2044 | ||
73a25462 HR |
2045 | static void |
2046 | ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) | |
1da177e4 | 2047 | { |
6902f416 HR |
2048 | int status; |
2049 | int new_status = DID_OK; | |
2050 | int do_fallback = 0; | |
2051 | int scsi_status; | |
2052 | ||
1da177e4 | 2053 | /* |
73a25462 HR |
2054 | * Map CAM error codes into Linux Error codes. We |
2055 | * avoid the conversion so that the DV code has the | |
2056 | * full error information available when making | |
2057 | * state change decisions. | |
1da177e4 | 2058 | */ |
6902f416 HR |
2059 | |
2060 | status = ahd_cmd_get_transaction_status(cmd); | |
2061 | switch (status) { | |
2062 | case CAM_REQ_INPROG: | |
2063 | case CAM_REQ_CMP: | |
2064 | new_status = DID_OK; | |
2065 | break; | |
2066 | case CAM_AUTOSENSE_FAIL: | |
2067 | new_status = DID_ERROR; | |
2068 | /* Fallthrough */ | |
2069 | case CAM_SCSI_STATUS_ERROR: | |
2070 | scsi_status = ahd_cmd_get_scsi_status(cmd); | |
2071 | ||
2072 | switch(scsi_status) { | |
2073 | case SCSI_STATUS_CMD_TERMINATED: | |
2074 | case SCSI_STATUS_CHECK_COND: | |
2075 | if ((cmd->result >> 24) != DRIVER_SENSE) { | |
2076 | do_fallback = 1; | |
2077 | } else { | |
2078 | struct scsi_sense_data *sense; | |
2079 | ||
2080 | sense = (struct scsi_sense_data *) | |
c1c9ce52 | 2081 | cmd->sense_buffer; |
6902f416 HR |
2082 | if (sense->extra_len >= 5 && |
2083 | (sense->add_sense_code == 0x47 | |
2084 | || sense->add_sense_code == 0x48)) | |
2085 | do_fallback = 1; | |
2086 | } | |
73a25462 HR |
2087 | break; |
2088 | default: | |
73a25462 HR |
2089 | break; |
2090 | } | |
6902f416 HR |
2091 | break; |
2092 | case CAM_REQ_ABORTED: | |
2093 | new_status = DID_ABORT; | |
2094 | break; | |
2095 | case CAM_BUSY: | |
2096 | new_status = DID_BUS_BUSY; | |
2097 | break; | |
2098 | case CAM_REQ_INVALID: | |
2099 | case CAM_PATH_INVALID: | |
2100 | new_status = DID_BAD_TARGET; | |
2101 | break; | |
2102 | case CAM_SEL_TIMEOUT: | |
2103 | new_status = DID_NO_CONNECT; | |
2104 | break; | |
2105 | case CAM_SCSI_BUS_RESET: | |
2106 | case CAM_BDR_SENT: | |
2107 | new_status = DID_RESET; | |
2108 | break; | |
2109 | case CAM_UNCOR_PARITY: | |
2110 | new_status = DID_PARITY; | |
2111 | do_fallback = 1; | |
2112 | break; | |
2113 | case CAM_CMD_TIMEOUT: | |
2114 | new_status = DID_TIME_OUT; | |
2115 | do_fallback = 1; | |
2116 | break; | |
2117 | case CAM_REQ_CMP_ERR: | |
2118 | case CAM_UNEXP_BUSFREE: | |
2119 | case CAM_DATA_RUN_ERR: | |
2120 | new_status = DID_ERROR; | |
2121 | do_fallback = 1; | |
2122 | break; | |
2123 | case CAM_UA_ABORT: | |
2124 | case CAM_NO_HBA: | |
2125 | case CAM_SEQUENCE_FAIL: | |
2126 | case CAM_CCB_LEN_ERR: | |
2127 | case CAM_PROVIDE_FAIL: | |
2128 | case CAM_REQ_TERMIO: | |
2129 | case CAM_UNREC_HBA_ERROR: | |
2130 | case CAM_REQ_TOO_BIG: | |
2131 | new_status = DID_ERROR; | |
2132 | break; | |
2133 | case CAM_REQUEUE_REQ: | |
2134 | new_status = DID_REQUEUE; | |
2135 | break; | |
2136 | default: | |
2137 | /* We should never get here */ | |
2138 | new_status = DID_ERROR; | |
2139 | break; | |
2140 | } | |
73a25462 | 2141 | |
6902f416 | 2142 | if (do_fallback) { |
48813cf9 | 2143 | printk("%s: device overrun (status %x) on %d:%d:%d\n", |
6902f416 HR |
2144 | ahd_name(ahd), status, cmd->device->channel, |
2145 | cmd->device->id, cmd->device->lun); | |
73a25462 HR |
2146 | } |
2147 | ||
6902f416 HR |
2148 | ahd_cmd_set_transaction_status(cmd, new_status); |
2149 | ||
73a25462 | 2150 | cmd->scsi_done(cmd); |
1da177e4 LT |
2151 | } |
2152 | ||
e3e0ca51 | 2153 | static void |
73a25462 | 2154 | ahd_freeze_simq(struct ahd_softc *ahd) |
1da177e4 | 2155 | { |
7b22da38 | 2156 | scsi_block_requests(ahd->platform_data->host); |
1da177e4 LT |
2157 | } |
2158 | ||
e3e0ca51 | 2159 | static void |
73a25462 | 2160 | ahd_release_simq(struct ahd_softc *ahd) |
1da177e4 | 2161 | { |
7b22da38 | 2162 | scsi_unblock_requests(ahd->platform_data->host); |
73a25462 | 2163 | } |
1da177e4 | 2164 | |
73a25462 | 2165 | static int |
6902f416 | 2166 | ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd) |
73a25462 HR |
2167 | { |
2168 | struct ahd_softc *ahd; | |
2169 | struct ahd_linux_device *dev; | |
2170 | struct scb *pending_scb; | |
2171 | u_int saved_scbptr; | |
2172 | u_int active_scbptr; | |
2173 | u_int last_phase; | |
2174 | u_int saved_scsiid; | |
2175 | u_int cdb_byte; | |
2176 | int retval; | |
2177 | int was_paused; | |
2178 | int paused; | |
2179 | int wait; | |
2180 | int disconnected; | |
2181 | ahd_mode_state saved_modes; | |
4065a413 | 2182 | unsigned long flags; |
73a25462 HR |
2183 | |
2184 | pending_scb = NULL; | |
2185 | paused = FALSE; | |
2186 | wait = FALSE; | |
2187 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
2188 | ||
017560fc | 2189 | scmd_printk(KERN_INFO, cmd, |
6902f416 | 2190 | "Attempting to queue an ABORT message:"); |
73a25462 | 2191 | |
48813cf9 | 2192 | printk("CDB:"); |
73a25462 | 2193 | for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) |
48813cf9 PE |
2194 | printk(" 0x%x", cmd->cmnd[cdb_byte]); |
2195 | printk("\n"); | |
73a25462 | 2196 | |
4065a413 | 2197 | ahd_lock(ahd, &flags); |
1da177e4 | 2198 | |
1da177e4 | 2199 | /* |
73a25462 HR |
2200 | * First determine if we currently own this command. |
2201 | * Start by searching the device queue. If not found | |
2202 | * there, check the pending_scb list. If not found | |
2203 | * at all, and the system wanted us to just abort the | |
2204 | * command, return success. | |
1da177e4 | 2205 | */ |
73a25462 HR |
2206 | dev = scsi_transport_device_data(cmd->device); |
2207 | ||
2208 | if (dev == NULL) { | |
2209 | /* | |
2210 | * No target device for this command exists, | |
2211 | * so we must not still own the command. | |
2212 | */ | |
017560fc | 2213 | scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); |
73a25462 HR |
2214 | retval = SUCCESS; |
2215 | goto no_cmd; | |
2216 | } | |
1da177e4 | 2217 | |
1da177e4 | 2218 | /* |
73a25462 | 2219 | * See if we can find a matching cmd in the pending list. |
1da177e4 | 2220 | */ |
73a25462 HR |
2221 | LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { |
2222 | if (pending_scb->io_ctx == cmd) | |
2223 | break; | |
1da177e4 LT |
2224 | } |
2225 | ||
73a25462 | 2226 | if (pending_scb == NULL) { |
017560fc | 2227 | scmd_printk(KERN_INFO, cmd, "Command not found\n"); |
73a25462 | 2228 | goto no_cmd; |
1da177e4 | 2229 | } |
1da177e4 | 2230 | |
73a25462 HR |
2231 | if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { |
2232 | /* | |
2233 | * We can't queue two recovery actions using the same SCB | |
2234 | */ | |
2235 | retval = FAILED; | |
2236 | goto done; | |
2237 | } | |
1da177e4 | 2238 | |
1da177e4 | 2239 | /* |
73a25462 HR |
2240 | * Ensure that the card doesn't do anything |
2241 | * behind our back. Also make sure that we | |
2242 | * didn't "just" miss an interrupt that would | |
2243 | * affect this cmd. | |
1da177e4 | 2244 | */ |
73a25462 HR |
2245 | was_paused = ahd_is_paused(ahd); |
2246 | ahd_pause_and_flushwork(ahd); | |
2247 | paused = TRUE; | |
1da177e4 | 2248 | |
73a25462 | 2249 | if ((pending_scb->flags & SCB_ACTIVE) == 0) { |
017560fc | 2250 | scmd_printk(KERN_INFO, cmd, "Command already completed\n"); |
73a25462 HR |
2251 | goto no_cmd; |
2252 | } | |
1da177e4 | 2253 | |
48813cf9 | 2254 | printk("%s: At time of recovery, card was %spaused\n", |
73a25462 HR |
2255 | ahd_name(ahd), was_paused ? "" : "not "); |
2256 | ahd_dump_card_state(ahd); | |
1da177e4 | 2257 | |
73a25462 | 2258 | disconnected = TRUE; |
6902f416 HR |
2259 | if (ahd_search_qinfifo(ahd, cmd->device->id, |
2260 | cmd->device->channel + 'A', | |
2261 | cmd->device->lun, | |
2262 | pending_scb->hscb->tag, | |
2263 | ROLE_INITIATOR, CAM_REQ_ABORTED, | |
2264 | SEARCH_COMPLETE) > 0) { | |
48813cf9 | 2265 | printk("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", |
6902f416 HR |
2266 | ahd_name(ahd), cmd->device->channel, |
2267 | cmd->device->id, cmd->device->lun); | |
2268 | retval = SUCCESS; | |
2269 | goto done; | |
73a25462 | 2270 | } |
1da177e4 | 2271 | |
73a25462 HR |
2272 | saved_modes = ahd_save_modes(ahd); |
2273 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); | |
2274 | last_phase = ahd_inb(ahd, LASTPHASE); | |
2275 | saved_scbptr = ahd_get_scbptr(ahd); | |
2276 | active_scbptr = saved_scbptr; | |
6902f416 | 2277 | if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { |
73a25462 | 2278 | struct scb *bus_scb; |
1da177e4 | 2279 | |
73a25462 HR |
2280 | bus_scb = ahd_lookup_scb(ahd, active_scbptr); |
2281 | if (bus_scb == pending_scb) | |
2282 | disconnected = FALSE; | |
1da177e4 | 2283 | } |
73a25462 HR |
2284 | |
2285 | /* | |
2286 | * At this point, pending_scb is the scb associated with the | |
2287 | * passed in command. That command is currently active on the | |
2288 | * bus or is in the disconnected state. | |
2289 | */ | |
2290 | saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); | |
6902f416 HR |
2291 | if (last_phase != P_BUSFREE |
2292 | && SCB_GET_TAG(pending_scb) == active_scbptr) { | |
73a25462 | 2293 | |
1da177e4 | 2294 | /* |
73a25462 HR |
2295 | * We're active on the bus, so assert ATN |
2296 | * and hope that the target responds. | |
1da177e4 | 2297 | */ |
73a25462 | 2298 | pending_scb = ahd_lookup_scb(ahd, active_scbptr); |
6902f416 | 2299 | pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
73a25462 HR |
2300 | ahd_outb(ahd, MSG_OUT, HOST_MSG); |
2301 | ahd_outb(ahd, SCSISIGO, last_phase|ATNO); | |
6902f416 | 2302 | scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n"); |
73a25462 HR |
2303 | wait = TRUE; |
2304 | } else if (disconnected) { | |
2305 | ||
2306 | /* | |
2307 | * Actually re-queue this SCB in an attempt | |
2308 | * to select the device before it reconnects. | |
2309 | */ | |
6902f416 | 2310 | pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
73a25462 HR |
2311 | ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); |
2312 | pending_scb->hscb->cdb_len = 0; | |
2313 | pending_scb->hscb->task_attribute = 0; | |
2314 | pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; | |
2315 | ||
2316 | if ((pending_scb->flags & SCB_PACKETIZED) != 0) { | |
1da177e4 | 2317 | /* |
73a25462 HR |
2318 | * Mark the SCB has having an outstanding |
2319 | * task management function. Should the command | |
2320 | * complete normally before the task management | |
2321 | * function can be sent, the host will be notified | |
2322 | * to abort our requeued SCB. | |
1da177e4 | 2323 | */ |
73a25462 HR |
2324 | ahd_outb(ahd, SCB_TASK_MANAGEMENT, |
2325 | pending_scb->hscb->task_management); | |
2326 | } else { | |
2327 | /* | |
2328 | * If non-packetized, set the MK_MESSAGE control | |
2329 | * bit indicating that we desire to send a message. | |
2330 | * We also set the disconnected flag since there is | |
2331 | * no guarantee that our SCB control byte matches | |
2332 | * the version on the card. We don't want the | |
2333 | * sequencer to abort the command thinking an | |
2334 | * unsolicited reselection occurred. | |
2335 | */ | |
2336 | pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; | |
2337 | ||
2338 | /* | |
2339 | * The sequencer will never re-reference the | |
2340 | * in-core SCB. To make sure we are notified | |
b71a8eb0 | 2341 | * during reselection, set the MK_MESSAGE flag in |
73a25462 HR |
2342 | * the card's copy of the SCB. |
2343 | */ | |
2344 | ahd_outb(ahd, SCB_CONTROL, | |
2345 | ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); | |
1da177e4 | 2346 | } |
73a25462 | 2347 | |
1da177e4 | 2348 | /* |
73a25462 HR |
2349 | * Clear out any entries in the QINFIFO first |
2350 | * so we are the next SCB for this target | |
2351 | * to run. | |
1da177e4 | 2352 | */ |
73a25462 HR |
2353 | ahd_search_qinfifo(ahd, cmd->device->id, |
2354 | cmd->device->channel + 'A', cmd->device->lun, | |
2355 | SCB_LIST_NULL, ROLE_INITIATOR, | |
2356 | CAM_REQUEUE_REQ, SEARCH_COMPLETE); | |
2357 | ahd_qinfifo_requeue_tail(ahd, pending_scb); | |
2358 | ahd_set_scbptr(ahd, saved_scbptr); | |
2359 | ahd_print_path(ahd, pending_scb); | |
48813cf9 | 2360 | printk("Device is disconnected, re-queuing SCB\n"); |
73a25462 HR |
2361 | wait = TRUE; |
2362 | } else { | |
017560fc | 2363 | scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); |
73a25462 HR |
2364 | retval = FAILED; |
2365 | goto done; | |
1da177e4 | 2366 | } |
1da177e4 | 2367 | |
73a25462 | 2368 | no_cmd: |
1da177e4 | 2369 | /* |
73a25462 HR |
2370 | * Our assumption is that if we don't have the command, no |
2371 | * recovery action was required, so we return success. Again, | |
2372 | * the semantics of the mid-layer recovery engine are not | |
2373 | * well defined, so this may change in time. | |
1da177e4 | 2374 | */ |
73a25462 HR |
2375 | retval = SUCCESS; |
2376 | done: | |
2377 | if (paused) | |
2378 | ahd_unpause(ahd); | |
2379 | if (wait) { | |
6e9a4738 | 2380 | DECLARE_COMPLETION_ONSTACK(done); |
1da177e4 | 2381 | |
7b22da38 | 2382 | ahd->platform_data->eh_done = &done; |
4065a413 CH |
2383 | ahd_unlock(ahd, &flags); |
2384 | ||
48813cf9 | 2385 | printk("%s: Recovery code sleeping\n", ahd_name(ahd)); |
7b22da38 HR |
2386 | if (!wait_for_completion_timeout(&done, 5 * HZ)) { |
2387 | ahd_lock(ahd, &flags); | |
2388 | ahd->platform_data->eh_done = NULL; | |
2389 | ahd_unlock(ahd, &flags); | |
48813cf9 | 2390 | printk("%s: Timer Expired (active %d)\n", |
11668bb6 | 2391 | ahd_name(ahd), dev->active); |
73a25462 | 2392 | retval = FAILED; |
1da177e4 | 2393 | } |
48813cf9 | 2394 | printk("Recovery code awake\n"); |
eb221849 HR |
2395 | } else |
2396 | ahd_unlock(ahd, &flags); | |
2397 | ||
7b22da38 | 2398 | if (retval != SUCCESS) |
48813cf9 | 2399 | printk("%s: Command abort returning 0x%x\n", |
7b22da38 HR |
2400 | ahd_name(ahd), retval); |
2401 | ||
2402 | return retval; | |
1da177e4 LT |
2403 | } |
2404 | ||
73a25462 | 2405 | static void ahd_linux_set_width(struct scsi_target *starget, int width) |
1da177e4 | 2406 | { |
73a25462 HR |
2407 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2408 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2409 | struct ahd_devinfo devinfo; | |
2410 | unsigned long flags; | |
1da177e4 | 2411 | |
73a25462 HR |
2412 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2413 | starget->channel + 'A', ROLE_INITIATOR); | |
2414 | ahd_lock(ahd, &flags); | |
2415 | ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); | |
2416 | ahd_unlock(ahd, &flags); | |
2417 | } | |
2418 | ||
2419 | static void ahd_linux_set_period(struct scsi_target *starget, int period) | |
2420 | { | |
2421 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2422 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2423 | struct ahd_tmode_tstate *tstate; | |
2424 | struct ahd_initiator_tinfo *tinfo | |
2425 | = ahd_fetch_transinfo(ahd, | |
2426 | starget->channel + 'A', | |
2427 | shost->this_id, starget->id, &tstate); | |
2428 | struct ahd_devinfo devinfo; | |
2429 | unsigned int ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 | 2430 | unsigned int dt; |
73a25462 HR |
2431 | unsigned long flags; |
2432 | unsigned long offset = tinfo->goal.offset; | |
1da177e4 | 2433 | |
a4b53a11 HR |
2434 | #ifdef AHD_DEBUG |
2435 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2436 | printk("%s: set period to %d\n", ahd_name(ahd), period); |
a4b53a11 | 2437 | #endif |
73a25462 HR |
2438 | if (offset == 0) |
2439 | offset = MAX_OFFSET; | |
1da177e4 | 2440 | |
73a25462 HR |
2441 | if (period < 8) |
2442 | period = 8; | |
2443 | if (period < 10) { | |
0f82cb92 JB |
2444 | if (spi_max_width(starget)) { |
2445 | ppr_options |= MSG_EXT_PPR_DT_REQ; | |
2446 | if (period == 8) | |
2447 | ppr_options |= MSG_EXT_PPR_IU_REQ; | |
2448 | } else | |
2449 | period = 10; | |
1da177e4 LT |
2450 | } |
2451 | ||
a4b53a11 HR |
2452 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
2453 | ||
73a25462 HR |
2454 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2455 | starget->channel + 'A', ROLE_INITIATOR); | |
1da177e4 | 2456 | |
73a25462 HR |
2457 | /* all PPR requests apart from QAS require wide transfers */ |
2458 | if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { | |
2459 | if (spi_width(starget) == 0) | |
2460 | ppr_options &= MSG_EXT_PPR_QAS_REQ; | |
1da177e4 | 2461 | } |
73a25462 | 2462 | |
a4b53a11 HR |
2463 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2464 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2465 | ||
73a25462 HR |
2466 | ahd_lock(ahd, &flags); |
2467 | ahd_set_syncrate(ahd, &devinfo, period, offset, | |
2468 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2469 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2470 | } |
2471 | ||
73a25462 | 2472 | static void ahd_linux_set_offset(struct scsi_target *starget, int offset) |
1da177e4 | 2473 | { |
73a25462 HR |
2474 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2475 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2476 | struct ahd_tmode_tstate *tstate; | |
2477 | struct ahd_initiator_tinfo *tinfo | |
2478 | = ahd_fetch_transinfo(ahd, | |
2479 | starget->channel + 'A', | |
2480 | shost->this_id, starget->id, &tstate); | |
2481 | struct ahd_devinfo devinfo; | |
2482 | unsigned int ppr_options = 0; | |
2483 | unsigned int period = 0; | |
a4b53a11 | 2484 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
73a25462 HR |
2485 | unsigned long flags; |
2486 | ||
a4b53a11 HR |
2487 | #ifdef AHD_DEBUG |
2488 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2489 | printk("%s: set offset to %d\n", ahd_name(ahd), offset); |
a4b53a11 HR |
2490 | #endif |
2491 | ||
73a25462 HR |
2492 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2493 | starget->channel + 'A', ROLE_INITIATOR); | |
2494 | if (offset != 0) { | |
2495 | period = tinfo->goal.period; | |
2496 | ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 HR |
2497 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2498 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
1da177e4 | 2499 | } |
a4b53a11 | 2500 | |
73a25462 HR |
2501 | ahd_lock(ahd, &flags); |
2502 | ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, | |
2503 | AHD_TRANS_GOAL, FALSE); | |
2504 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2505 | } |
2506 | ||
73a25462 | 2507 | static void ahd_linux_set_dt(struct scsi_target *starget, int dt) |
1da177e4 | 2508 | { |
73a25462 HR |
2509 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2510 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2511 | struct ahd_tmode_tstate *tstate; | |
2512 | struct ahd_initiator_tinfo *tinfo | |
2513 | = ahd_fetch_transinfo(ahd, | |
2514 | starget->channel + 'A', | |
2515 | shost->this_id, starget->id, &tstate); | |
2516 | struct ahd_devinfo devinfo; | |
2517 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2518 | & ~MSG_EXT_PPR_DT_REQ; | |
2519 | unsigned int period = tinfo->goal.period; | |
52b5cfb3 | 2520 | unsigned int width = tinfo->goal.width; |
73a25462 HR |
2521 | unsigned long flags; |
2522 | ||
a4b53a11 HR |
2523 | #ifdef AHD_DEBUG |
2524 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2525 | printk("%s: %s DT\n", ahd_name(ahd), |
a4b53a11 HR |
2526 | dt ? "enabling" : "disabling"); |
2527 | #endif | |
0f82cb92 | 2528 | if (dt && spi_max_width(starget)) { |
73a25462 | 2529 | ppr_options |= MSG_EXT_PPR_DT_REQ; |
52b5cfb3 HR |
2530 | if (!width) |
2531 | ahd_linux_set_width(starget, 1); | |
a4b53a11 HR |
2532 | } else { |
2533 | if (period <= 9) | |
2534 | period = 10; /* If resetting DT, period must be >= 25ns */ | |
2535 | /* IU is invalid without DT set */ | |
2536 | ppr_options &= ~MSG_EXT_PPR_IU_REQ; | |
2537 | } | |
73a25462 HR |
2538 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2539 | starget->channel + 'A', ROLE_INITIATOR); | |
2540 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2541 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2542 | |
73a25462 HR |
2543 | ahd_lock(ahd, &flags); |
2544 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2545 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2546 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2547 | } |
2548 | ||
73a25462 | 2549 | static void ahd_linux_set_qas(struct scsi_target *starget, int qas) |
1da177e4 | 2550 | { |
73a25462 HR |
2551 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2552 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2553 | struct ahd_tmode_tstate *tstate; | |
2554 | struct ahd_initiator_tinfo *tinfo | |
2555 | = ahd_fetch_transinfo(ahd, | |
2556 | starget->channel + 'A', | |
2557 | shost->this_id, starget->id, &tstate); | |
2558 | struct ahd_devinfo devinfo; | |
2559 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2560 | & ~MSG_EXT_PPR_QAS_REQ; | |
2561 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2562 | unsigned int dt; |
73a25462 HR |
2563 | unsigned long flags; |
2564 | ||
a4b53a11 HR |
2565 | #ifdef AHD_DEBUG |
2566 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2567 | printk("%s: %s QAS\n", ahd_name(ahd), |
a4b53a11 HR |
2568 | qas ? "enabling" : "disabling"); |
2569 | #endif | |
2570 | ||
2571 | if (qas) { | |
2572 | ppr_options |= MSG_EXT_PPR_QAS_REQ; | |
2573 | } | |
2574 | ||
2575 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2576 | |
2577 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2578 | starget->channel + 'A', ROLE_INITIATOR); | |
2579 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2580 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2581 | |
73a25462 HR |
2582 | ahd_lock(ahd, &flags); |
2583 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2584 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2585 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2586 | } |
2587 | ||
73a25462 | 2588 | static void ahd_linux_set_iu(struct scsi_target *starget, int iu) |
1da177e4 | 2589 | { |
73a25462 HR |
2590 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2591 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2592 | struct ahd_tmode_tstate *tstate; | |
2593 | struct ahd_initiator_tinfo *tinfo | |
2594 | = ahd_fetch_transinfo(ahd, | |
2595 | starget->channel + 'A', | |
2596 | shost->this_id, starget->id, &tstate); | |
2597 | struct ahd_devinfo devinfo; | |
2598 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2599 | & ~MSG_EXT_PPR_IU_REQ; | |
2600 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2601 | unsigned int dt; |
73a25462 HR |
2602 | unsigned long flags; |
2603 | ||
a4b53a11 HR |
2604 | #ifdef AHD_DEBUG |
2605 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2606 | printk("%s: %s IU\n", ahd_name(ahd), |
a4b53a11 HR |
2607 | iu ? "enabling" : "disabling"); |
2608 | #endif | |
2609 | ||
0f82cb92 | 2610 | if (iu && spi_max_width(starget)) { |
73a25462 | 2611 | ppr_options |= MSG_EXT_PPR_IU_REQ; |
a4b53a11 HR |
2612 | ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ |
2613 | } | |
2614 | ||
2615 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2616 | |
2617 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2618 | starget->channel + 'A', ROLE_INITIATOR); | |
2619 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2620 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2621 | |
73a25462 HR |
2622 | ahd_lock(ahd, &flags); |
2623 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2624 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2625 | ahd_unlock(ahd, &flags); | |
2626 | } | |
1da177e4 | 2627 | |
73a25462 HR |
2628 | static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) |
2629 | { | |
2630 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2631 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2632 | struct ahd_tmode_tstate *tstate; | |
2633 | struct ahd_initiator_tinfo *tinfo | |
2634 | = ahd_fetch_transinfo(ahd, | |
2635 | starget->channel + 'A', | |
2636 | shost->this_id, starget->id, &tstate); | |
2637 | struct ahd_devinfo devinfo; | |
2638 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2639 | & ~MSG_EXT_PPR_RD_STRM; | |
2640 | unsigned int period = tinfo->goal.period; | |
2641 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2642 | unsigned long flags; | |
2643 | ||
a4b53a11 HR |
2644 | #ifdef AHD_DEBUG |
2645 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2646 | printk("%s: %s Read Streaming\n", ahd_name(ahd), |
a4b53a11 HR |
2647 | rdstrm ? "enabling" : "disabling"); |
2648 | #endif | |
2649 | ||
0f82cb92 | 2650 | if (rdstrm && spi_max_width(starget)) |
73a25462 HR |
2651 | ppr_options |= MSG_EXT_PPR_RD_STRM; |
2652 | ||
2653 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2654 | starget->channel + 'A', ROLE_INITIATOR); | |
2655 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2656 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2657 | |
a4b53a11 HR |
2658 | ahd_lock(ahd, &flags); |
2659 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2660 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2661 | ahd_unlock(ahd, &flags); | |
2662 | } | |
2663 | ||
2664 | static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) | |
2665 | { | |
2666 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2667 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2668 | struct ahd_tmode_tstate *tstate; | |
2669 | struct ahd_initiator_tinfo *tinfo | |
2670 | = ahd_fetch_transinfo(ahd, | |
2671 | starget->channel + 'A', | |
2672 | shost->this_id, starget->id, &tstate); | |
2673 | struct ahd_devinfo devinfo; | |
2674 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2675 | & ~MSG_EXT_PPR_WR_FLOW; | |
2676 | unsigned int period = tinfo->goal.period; | |
2677 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2678 | unsigned long flags; | |
2679 | ||
2680 | #ifdef AHD_DEBUG | |
2681 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2682 | printk("%s: %s Write Flow Control\n", ahd_name(ahd), |
a4b53a11 HR |
2683 | wrflow ? "enabling" : "disabling"); |
2684 | #endif | |
2685 | ||
0f82cb92 | 2686 | if (wrflow && spi_max_width(starget)) |
a4b53a11 HR |
2687 | ppr_options |= MSG_EXT_PPR_WR_FLOW; |
2688 | ||
2689 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2690 | starget->channel + 'A', ROLE_INITIATOR); | |
2691 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2692 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2693 | ||
a4b53a11 HR |
2694 | ahd_lock(ahd, &flags); |
2695 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2696 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2697 | ahd_unlock(ahd, &flags); | |
2698 | } | |
2699 | ||
2700 | static void ahd_linux_set_rti(struct scsi_target *starget, int rti) | |
2701 | { | |
2702 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2703 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2704 | struct ahd_tmode_tstate *tstate; | |
2705 | struct ahd_initiator_tinfo *tinfo | |
2706 | = ahd_fetch_transinfo(ahd, | |
2707 | starget->channel + 'A', | |
2708 | shost->this_id, starget->id, &tstate); | |
2709 | struct ahd_devinfo devinfo; | |
2710 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2711 | & ~MSG_EXT_PPR_RTI; | |
2712 | unsigned int period = tinfo->goal.period; | |
2713 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2714 | unsigned long flags; | |
2715 | ||
2716 | if ((ahd->features & AHD_RTI) == 0) { | |
2717 | #ifdef AHD_DEBUG | |
2718 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2719 | printk("%s: RTI not available\n", ahd_name(ahd)); |
a4b53a11 HR |
2720 | #endif |
2721 | return; | |
2722 | } | |
2723 | ||
2724 | #ifdef AHD_DEBUG | |
2725 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2726 | printk("%s: %s RTI\n", ahd_name(ahd), |
a4b53a11 HR |
2727 | rti ? "enabling" : "disabling"); |
2728 | #endif | |
2729 | ||
0f82cb92 | 2730 | if (rti && spi_max_width(starget)) |
a4b53a11 HR |
2731 | ppr_options |= MSG_EXT_PPR_RTI; |
2732 | ||
2733 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2734 | starget->channel + 'A', ROLE_INITIATOR); | |
2735 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2736 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2737 | ||
a4b53a11 HR |
2738 | ahd_lock(ahd, &flags); |
2739 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2740 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2741 | ahd_unlock(ahd, &flags); | |
2742 | } | |
2743 | ||
2744 | static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) | |
2745 | { | |
2746 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2747 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2748 | struct ahd_tmode_tstate *tstate; | |
2749 | struct ahd_initiator_tinfo *tinfo | |
2750 | = ahd_fetch_transinfo(ahd, | |
2751 | starget->channel + 'A', | |
2752 | shost->this_id, starget->id, &tstate); | |
2753 | struct ahd_devinfo devinfo; | |
2754 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2755 | & ~MSG_EXT_PPR_PCOMP_EN; | |
2756 | unsigned int period = tinfo->goal.period; | |
2757 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2758 | unsigned long flags; | |
2759 | ||
2760 | #ifdef AHD_DEBUG | |
2761 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
48813cf9 | 2762 | printk("%s: %s Precompensation\n", ahd_name(ahd), |
a4b53a11 HR |
2763 | pcomp ? "Enable" : "Disable"); |
2764 | #endif | |
2765 | ||
0f82cb92 | 2766 | if (pcomp && spi_max_width(starget)) { |
843822ad HR |
2767 | uint8_t precomp; |
2768 | ||
2769 | if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) { | |
980b306a | 2770 | const struct ahd_linux_iocell_opts *iocell_opts; |
843822ad HR |
2771 | |
2772 | iocell_opts = &aic79xx_iocell_info[ahd->unit]; | |
2773 | precomp = iocell_opts->precomp; | |
2774 | } else { | |
2775 | precomp = AIC79XX_DEFAULT_PRECOMP; | |
2776 | } | |
a4b53a11 | 2777 | ppr_options |= MSG_EXT_PPR_PCOMP_EN; |
843822ad HR |
2778 | AHD_SET_PRECOMP(ahd, precomp); |
2779 | } else { | |
2780 | AHD_SET_PRECOMP(ahd, 0); | |
2781 | } | |
a4b53a11 HR |
2782 | |
2783 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2784 | starget->channel + 'A', ROLE_INITIATOR); | |
2785 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2786 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2787 | ||
73a25462 HR |
2788 | ahd_lock(ahd, &flags); |
2789 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2790 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2791 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2792 | } |
2793 | ||
88ff29a4 JB |
2794 | static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) |
2795 | { | |
2796 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2797 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2798 | struct ahd_tmode_tstate *tstate; | |
2799 | struct ahd_initiator_tinfo *tinfo | |
2800 | = ahd_fetch_transinfo(ahd, | |
2801 | starget->channel + 'A', | |
2802 | shost->this_id, starget->id, &tstate); | |
2803 | struct ahd_devinfo devinfo; | |
2804 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2805 | & ~MSG_EXT_PPR_HOLD_MCS; | |
2806 | unsigned int period = tinfo->goal.period; | |
2807 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2808 | unsigned long flags; | |
2809 | ||
0f82cb92 | 2810 | if (hold && spi_max_width(starget)) |
88ff29a4 JB |
2811 | ppr_options |= MSG_EXT_PPR_HOLD_MCS; |
2812 | ||
2813 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2814 | starget->channel + 'A', ROLE_INITIATOR); | |
2815 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2816 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2817 | ||
2818 | ahd_lock(ahd, &flags); | |
2819 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2820 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2821 | ahd_unlock(ahd, &flags); | |
2822 | } | |
2823 | ||
d6b9ccbb HR |
2824 | static void ahd_linux_get_signalling(struct Scsi_Host *shost) |
2825 | { | |
2826 | struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata; | |
2827 | unsigned long flags; | |
2828 | u8 mode; | |
88ff29a4 | 2829 | |
d6b9ccbb HR |
2830 | ahd_lock(ahd, &flags); |
2831 | ahd_pause(ahd); | |
2832 | mode = ahd_inb(ahd, SBLKCTL); | |
2833 | ahd_unpause(ahd); | |
2834 | ahd_unlock(ahd, &flags); | |
2835 | ||
2836 | if (mode & ENAB40) | |
2837 | spi_signalling(shost) = SPI_SIGNAL_LVD; | |
2838 | else if (mode & ENAB20) | |
2839 | spi_signalling(shost) = SPI_SIGNAL_SE; | |
2840 | else | |
2841 | spi_signalling(shost) = SPI_SIGNAL_UNKNOWN; | |
2842 | } | |
88ff29a4 | 2843 | |
73a25462 HR |
2844 | static struct spi_function_template ahd_linux_transport_functions = { |
2845 | .set_offset = ahd_linux_set_offset, | |
2846 | .show_offset = 1, | |
2847 | .set_period = ahd_linux_set_period, | |
2848 | .show_period = 1, | |
2849 | .set_width = ahd_linux_set_width, | |
2850 | .show_width = 1, | |
2851 | .set_dt = ahd_linux_set_dt, | |
2852 | .show_dt = 1, | |
2853 | .set_iu = ahd_linux_set_iu, | |
2854 | .show_iu = 1, | |
2855 | .set_qas = ahd_linux_set_qas, | |
2856 | .show_qas = 1, | |
2857 | .set_rd_strm = ahd_linux_set_rd_strm, | |
2858 | .show_rd_strm = 1, | |
a4b53a11 HR |
2859 | .set_wr_flow = ahd_linux_set_wr_flow, |
2860 | .show_wr_flow = 1, | |
2861 | .set_rti = ahd_linux_set_rti, | |
2862 | .show_rti = 1, | |
2863 | .set_pcomp_en = ahd_linux_set_pcomp_en, | |
2864 | .show_pcomp_en = 1, | |
88ff29a4 JB |
2865 | .set_hold_mcs = ahd_linux_set_hold_mcs, |
2866 | .show_hold_mcs = 1, | |
d6b9ccbb | 2867 | .get_signalling = ahd_linux_get_signalling, |
73a25462 HR |
2868 | }; |
2869 | ||
1da177e4 LT |
2870 | static int __init |
2871 | ahd_linux_init(void) | |
2872 | { | |
85a46523 CH |
2873 | int error = 0; |
2874 | ||
2875 | /* | |
2876 | * If we've been passed any parameters, process them now. | |
2877 | */ | |
2878 | if (aic79xx) | |
2879 | aic79xx_setup(aic79xx); | |
2880 | ||
2881 | ahd_linux_transport_template = | |
2882 | spi_attach_transport(&ahd_linux_transport_functions); | |
73a25462 HR |
2883 | if (!ahd_linux_transport_template) |
2884 | return -ENODEV; | |
85a46523 | 2885 | |
73a25462 HR |
2886 | scsi_transport_reserve_device(ahd_linux_transport_template, |
2887 | sizeof(struct ahd_linux_device)); | |
a80b3424 | 2888 | |
85a46523 CH |
2889 | error = ahd_linux_pci_init(); |
2890 | if (error) | |
2891 | spi_release_transport(ahd_linux_transport_template); | |
2892 | return error; | |
1da177e4 LT |
2893 | } |
2894 | ||
2895 | static void __exit | |
2896 | ahd_linux_exit(void) | |
2897 | { | |
1da177e4 | 2898 | ahd_linux_pci_exit(); |
73a25462 | 2899 | spi_release_transport(ahd_linux_transport_template); |
1da177e4 LT |
2900 | } |
2901 | ||
2902 | module_init(ahd_linux_init); | |
2903 | module_exit(ahd_linux_exit); |