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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> |
1da177e4 | 56 | |
1da177e4 LT |
57 | /* |
58 | * Bucket size for counting good commands in between bad ones. | |
59 | */ | |
60 | #define AHD_LINUX_ERR_THRESH 1000 | |
61 | ||
62 | /* | |
63 | * Set this to the delay in seconds after SCSI bus reset. | |
64 | * Note, we honor this only for the initial bus reset. | |
65 | * The scsi error recovery code performs its own bus settle | |
66 | * delay handling for error recovery actions. | |
67 | */ | |
68 | #ifdef CONFIG_AIC79XX_RESET_DELAY_MS | |
69 | #define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS | |
70 | #else | |
71 | #define AIC79XX_RESET_DELAY 5000 | |
72 | #endif | |
73 | ||
74 | /* | |
75 | * To change the default number of tagged transactions allowed per-device, | |
76 | * add a line to the lilo.conf file like: | |
77 | * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}" | |
78 | * which will result in the first four devices on the first two | |
79 | * controllers being set to a tagged queue depth of 32. | |
80 | * | |
81 | * The tag_commands is an array of 16 to allow for wide and twin adapters. | |
82 | * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15 | |
83 | * for channel 1. | |
84 | */ | |
85 | typedef struct { | |
86 | uint16_t tag_commands[16]; /* Allow for wide/twin adapters. */ | |
87 | } adapter_tag_info_t; | |
88 | ||
89 | /* | |
90 | * Modify this as you see fit for your system. | |
91 | * | |
92 | * 0 tagged queuing disabled | |
93 | * 1 <= n <= 253 n == max tags ever dispatched. | |
94 | * | |
95 | * The driver will throttle the number of commands dispatched to a | |
96 | * device if it returns queue full. For devices with a fixed maximum | |
97 | * queue depth, the driver will eventually determine this depth and | |
98 | * lock it in (a console message is printed to indicate that a lock | |
99 | * has occurred). On some devices, queue full is returned for a temporary | |
100 | * resource shortage. These devices will return queue full at varying | |
101 | * depths. The driver will throttle back when the queue fulls occur and | |
102 | * attempt to slowly increase the depth over time as the device recovers | |
103 | * from the resource shortage. | |
104 | * | |
105 | * In this example, the first line will disable tagged queueing for all | |
106 | * the devices on the first probed aic79xx adapter. | |
107 | * | |
108 | * The second line enables tagged queueing with 4 commands/LUN for IDs | |
109 | * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the | |
110 | * driver to attempt to use up to 64 tags for ID 1. | |
111 | * | |
112 | * The third line is the same as the first line. | |
113 | * | |
114 | * The fourth line disables tagged queueing for devices 0 and 3. It | |
115 | * enables tagged queueing for the other IDs, with 16 commands/LUN | |
116 | * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for | |
117 | * IDs 2, 5-7, and 9-15. | |
118 | */ | |
119 | ||
120 | /* | |
121 | * NOTE: The below structure is for reference only, the actual structure | |
122 | * to modify in order to change things is just below this comment block. | |
123 | adapter_tag_info_t aic79xx_tag_info[] = | |
124 | { | |
125 | {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, | |
126 | {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}}, | |
127 | {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}}, | |
128 | {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}} | |
129 | }; | |
130 | */ | |
131 | ||
132 | #ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE | |
133 | #define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE | |
134 | #else | |
135 | #define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE | |
136 | #endif | |
137 | ||
138 | #define AIC79XX_CONFIGED_TAG_COMMANDS { \ | |
139 | AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \ | |
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 | } | |
148 | ||
149 | /* | |
150 | * By default, use the number of commands specified by | |
151 | * the users kernel configuration. | |
152 | */ | |
153 | static adapter_tag_info_t aic79xx_tag_info[] = | |
154 | { | |
155 | {AIC79XX_CONFIGED_TAG_COMMANDS}, | |
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 | }; | |
172 | ||
1da177e4 LT |
173 | /* |
174 | * The I/O cell on the chip is very configurable in respect to its analog | |
175 | * characteristics. Set the defaults here; they can be overriden with | |
176 | * the proper insmod parameters. | |
177 | */ | |
178 | struct ahd_linux_iocell_opts | |
179 | { | |
180 | uint8_t precomp; | |
181 | uint8_t slewrate; | |
182 | uint8_t amplitude; | |
183 | }; | |
184 | #define AIC79XX_DEFAULT_PRECOMP 0xFF | |
185 | #define AIC79XX_DEFAULT_SLEWRATE 0xFF | |
186 | #define AIC79XX_DEFAULT_AMPLITUDE 0xFF | |
187 | #define AIC79XX_DEFAULT_IOOPTS \ | |
188 | { \ | |
189 | AIC79XX_DEFAULT_PRECOMP, \ | |
190 | AIC79XX_DEFAULT_SLEWRATE, \ | |
191 | AIC79XX_DEFAULT_AMPLITUDE \ | |
192 | } | |
193 | #define AIC79XX_PRECOMP_INDEX 0 | |
194 | #define AIC79XX_SLEWRATE_INDEX 1 | |
195 | #define AIC79XX_AMPLITUDE_INDEX 2 | |
196 | static struct ahd_linux_iocell_opts aic79xx_iocell_info[] = | |
197 | { | |
198 | AIC79XX_DEFAULT_IOOPTS, | |
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 | }; | |
215 | ||
216 | /* | |
217 | * There should be a specific return value for this in scsi.h, but | |
218 | * it seems that most drivers ignore it. | |
219 | */ | |
220 | #define DID_UNDERFLOW DID_ERROR | |
221 | ||
222 | void | |
223 | ahd_print_path(struct ahd_softc *ahd, struct scb *scb) | |
224 | { | |
225 | printk("(scsi%d:%c:%d:%d): ", | |
226 | ahd->platform_data->host->host_no, | |
227 | scb != NULL ? SCB_GET_CHANNEL(ahd, scb) : 'X', | |
228 | scb != NULL ? SCB_GET_TARGET(ahd, scb) : -1, | |
229 | scb != NULL ? SCB_GET_LUN(scb) : -1); | |
230 | } | |
231 | ||
232 | /* | |
233 | * XXX - these options apply unilaterally to _all_ adapters | |
234 | * cards in the system. This should be fixed. Exceptions to this | |
235 | * rule are noted in the comments. | |
236 | */ | |
237 | ||
238 | /* | |
239 | * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This | |
240 | * has no effect on any later resets that might occur due to things like | |
241 | * SCSI bus timeouts. | |
242 | */ | |
243 | static uint32_t aic79xx_no_reset; | |
244 | ||
245 | /* | |
246 | * Certain PCI motherboards will scan PCI devices from highest to lowest, | |
247 | * others scan from lowest to highest, and they tend to do all kinds of | |
248 | * strange things when they come into contact with PCI bridge chips. The | |
249 | * net result of all this is that the PCI card that is actually used to boot | |
250 | * the machine is very hard to detect. Most motherboards go from lowest | |
251 | * PCI slot number to highest, and the first SCSI controller found is the | |
252 | * one you boot from. The only exceptions to this are when a controller | |
253 | * has its BIOS disabled. So, we by default sort all of our SCSI controllers | |
254 | * from lowest PCI slot number to highest PCI slot number. We also force | |
255 | * all controllers with their BIOS disabled to the end of the list. This | |
256 | * works on *almost* all computers. Where it doesn't work, we have this | |
257 | * option. Setting this option to non-0 will reverse the order of the sort | |
258 | * to highest first, then lowest, but will still leave cards with their BIOS | |
259 | * disabled at the very end. That should fix everyone up unless there are | |
260 | * really strange cirumstances. | |
261 | */ | |
262 | static uint32_t aic79xx_reverse_scan; | |
263 | ||
264 | /* | |
265 | * Should we force EXTENDED translation on a controller. | |
266 | * 0 == Use whatever is in the SEEPROM or default to off | |
267 | * 1 == Use whatever is in the SEEPROM or default to on | |
268 | */ | |
269 | static uint32_t aic79xx_extended; | |
270 | ||
271 | /* | |
272 | * PCI bus parity checking of the Adaptec controllers. This is somewhat | |
273 | * dubious at best. To my knowledge, this option has never actually | |
274 | * solved a PCI parity problem, but on certain machines with broken PCI | |
275 | * chipset configurations, it can generate tons of false error messages. | |
276 | * It's included in the driver for completeness. | |
277 | * 0 = Shut off PCI parity check | |
278 | * non-0 = Enable PCI parity check | |
279 | * | |
280 | * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this | |
281 | * variable to -1 you would actually want to simply pass the variable | |
282 | * name without a number. That will invert the 0 which will result in | |
283 | * -1. | |
284 | */ | |
285 | static uint32_t aic79xx_pci_parity = ~0; | |
286 | ||
287 | /* | |
288 | * There are lots of broken chipsets in the world. Some of them will | |
289 | * violate the PCI spec when we issue byte sized memory writes to our | |
290 | * controller. I/O mapped register access, if allowed by the given | |
291 | * platform, will work in almost all cases. | |
292 | */ | |
293 | uint32_t aic79xx_allow_memio = ~0; | |
294 | ||
1da177e4 LT |
295 | /* |
296 | * So that we can set how long each device is given as a selection timeout. | |
297 | * The table of values goes like this: | |
298 | * 0 - 256ms | |
299 | * 1 - 128ms | |
300 | * 2 - 64ms | |
301 | * 3 - 32ms | |
302 | * We default to 256ms because some older devices need a longer time | |
303 | * to respond to initial selection. | |
304 | */ | |
305 | static uint32_t aic79xx_seltime; | |
306 | ||
307 | /* | |
308 | * Certain devices do not perform any aging on commands. Should the | |
309 | * device be saturated by commands in one portion of the disk, it is | |
310 | * possible for transactions on far away sectors to never be serviced. | |
311 | * To handle these devices, we can periodically send an ordered tag to | |
312 | * force all outstanding transactions to be serviced prior to a new | |
313 | * transaction. | |
314 | */ | |
315 | uint32_t aic79xx_periodic_otag; | |
316 | ||
3fb08612 HR |
317 | /* Some storage boxes are using an LSI chip which has a bug making it |
318 | * impossible to use aic79xx Rev B chip in 320 speeds. The following | |
319 | * storage boxes have been reported to be buggy: | |
320 | * EonStor 3U 16-Bay: U16U-G3A3 | |
321 | * EonStor 2U 12-Bay: U12U-G3A3 | |
322 | * SentinelRAID: 2500F R5 / R6 | |
323 | * SentinelRAID: 2500F R1 | |
324 | * SentinelRAID: 2500F/1500F | |
325 | * SentinelRAID: 150F | |
326 | * | |
327 | * To get around this LSI bug, you can set your board to 160 mode | |
328 | * or you can enable the SLOWCRC bit. | |
329 | */ | |
330 | uint32_t aic79xx_slowcrc; | |
331 | ||
1da177e4 LT |
332 | /* |
333 | * Module information and settable options. | |
334 | */ | |
335 | static char *aic79xx = NULL; | |
336 | ||
337 | MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>"); | |
338 | MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver"); | |
339 | MODULE_LICENSE("Dual BSD/GPL"); | |
340 | MODULE_VERSION(AIC79XX_DRIVER_VERSION); | |
73a25462 | 341 | module_param(aic79xx, charp, 0444); |
1da177e4 LT |
342 | MODULE_PARM_DESC(aic79xx, |
343 | "period delimited, options string.\n" | |
344 | " verbose Enable verbose/diagnostic logging\n" | |
345 | " allow_memio Allow device registers to be memory mapped\n" | |
346 | " debug Bitmask of debug values to enable\n" | |
347 | " no_reset Supress initial bus resets\n" | |
348 | " extended Enable extended geometry on all controllers\n" | |
349 | " periodic_otag Send an ordered tagged transaction\n" | |
350 | " periodically to prevent tag starvation.\n" | |
351 | " This may be required by some older disk\n" | |
352 | " or drives/RAID arrays.\n" | |
353 | " reverse_scan Sort PCI devices highest Bus/Slot to lowest\n" | |
354 | " tag_info:<tag_str> Set per-target tag depth\n" | |
355 | " global_tag_depth:<int> Global tag depth for all targets on all buses\n" | |
1da177e4 LT |
356 | " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n" |
357 | " precomp:<pcomp_list> Set the signal precompensation (0-7).\n" | |
358 | " amplitude:<int> Set the signal amplitude (0-7).\n" | |
359 | " seltime:<int> Selection Timeout:\n" | |
360 | " (0/256ms,1/128ms,2/64ms,3/32ms)\n" | |
3fb08612 | 361 | " slowcrc Turn on the SLOWCRC bit (Rev B only)\n" |
1da177e4 LT |
362 | "\n" |
363 | " Sample /etc/modprobe.conf line:\n" | |
364 | " Enable verbose logging\n" | |
365 | " Set tag depth on Controller 2/Target 2 to 10 tags\n" | |
366 | " Shorten the selection timeout to 128ms\n" | |
367 | "\n" | |
368 | " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n" | |
73a25462 | 369 | "\n"); |
1da177e4 LT |
370 | |
371 | static void ahd_linux_handle_scsi_status(struct ahd_softc *, | |
73a25462 | 372 | struct scsi_device *, |
1da177e4 LT |
373 | struct scb *); |
374 | static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, | |
73a25462 | 375 | struct scsi_cmnd *cmd); |
6902f416 | 376 | static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd); |
1da177e4 | 377 | static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd); |
1da177e4 LT |
378 | static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd, |
379 | struct ahd_devinfo *devinfo); | |
73a25462 | 380 | static void ahd_linux_device_queue_depth(struct scsi_device *); |
60a13213 | 381 | static int ahd_linux_run_command(struct ahd_softc*, |
73a25462 | 382 | struct ahd_linux_device *, |
60a13213 | 383 | struct scsi_cmnd *); |
1da177e4 | 384 | static void ahd_linux_setup_tag_info_global(char *p); |
73a25462 | 385 | static int aic79xx_setup(char *c); |
85a46523 CH |
386 | |
387 | static int ahd_linux_unit; | |
388 | ||
1da177e4 LT |
389 | |
390 | /****************************** Inlines ***************************************/ | |
1da177e4 LT |
391 | static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*); |
392 | ||
1da177e4 LT |
393 | static __inline void |
394 | ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb) | |
395 | { | |
73a25462 | 396 | struct scsi_cmnd *cmd; |
1da177e4 LT |
397 | int direction; |
398 | ||
399 | cmd = scb->io_ctx; | |
be7db055 | 400 | direction = cmd->sc_data_direction; |
1da177e4 LT |
401 | ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE); |
402 | if (cmd->use_sg != 0) { | |
403 | struct scatterlist *sg; | |
404 | ||
405 | sg = (struct scatterlist *)cmd->request_buffer; | |
406 | pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction); | |
407 | } else if (cmd->request_bufflen != 0) { | |
408 | pci_unmap_single(ahd->dev_softc, | |
409 | scb->platform_data->buf_busaddr, | |
410 | cmd->request_bufflen, direction); | |
411 | } | |
412 | } | |
413 | ||
414 | /******************************** Macros **************************************/ | |
415 | #define BUILD_SCSIID(ahd, cmd) \ | |
422c0d61 | 416 | (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id) |
1da177e4 | 417 | |
1da177e4 LT |
418 | /* |
419 | * Return a string describing the driver. | |
420 | */ | |
421 | static const char * | |
422 | ahd_linux_info(struct Scsi_Host *host) | |
423 | { | |
424 | static char buffer[512]; | |
425 | char ahd_info[256]; | |
426 | char *bp; | |
427 | struct ahd_softc *ahd; | |
428 | ||
429 | bp = &buffer[0]; | |
430 | ahd = *(struct ahd_softc **)host->hostdata; | |
431 | memset(bp, 0, sizeof(buffer)); | |
432 | strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev "); | |
433 | strcat(bp, AIC79XX_DRIVER_VERSION); | |
434 | strcat(bp, "\n"); | |
435 | strcat(bp, " <"); | |
436 | strcat(bp, ahd->description); | |
437 | strcat(bp, ">\n"); | |
438 | strcat(bp, " "); | |
439 | ahd_controller_info(ahd, ahd_info); | |
440 | strcat(bp, ahd_info); | |
441 | strcat(bp, "\n"); | |
442 | ||
443 | return (bp); | |
444 | } | |
445 | ||
446 | /* | |
447 | * Queue an SCB to the controller. | |
448 | */ | |
449 | static int | |
73a25462 | 450 | ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *)) |
1da177e4 LT |
451 | { |
452 | struct ahd_softc *ahd; | |
73a25462 | 453 | struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device); |
4065a413 | 454 | int rtn = SCSI_MLQUEUE_HOST_BUSY; |
1da177e4 LT |
455 | |
456 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
457 | ||
7b22da38 HR |
458 | cmd->scsi_done = scsi_done; |
459 | cmd->result = CAM_REQ_INPROG << 16; | |
460 | rtn = ahd_linux_run_command(ahd, dev, cmd); | |
1da177e4 | 461 | |
4065a413 | 462 | return rtn; |
1da177e4 LT |
463 | } |
464 | ||
73a25462 HR |
465 | static inline struct scsi_target ** |
466 | ahd_linux_target_in_softc(struct scsi_target *starget) | |
467 | { | |
468 | struct ahd_softc *ahd = | |
469 | *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); | |
470 | unsigned int target_offset; | |
471 | ||
472 | target_offset = starget->id; | |
473 | if (starget->channel != 0) | |
474 | target_offset += 8; | |
475 | ||
476 | return &ahd->platform_data->starget[target_offset]; | |
477 | } | |
478 | ||
1da177e4 | 479 | static int |
73a25462 | 480 | ahd_linux_target_alloc(struct scsi_target *starget) |
1da177e4 | 481 | { |
73a25462 HR |
482 | struct ahd_softc *ahd = |
483 | *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); | |
484 | unsigned long flags; | |
485 | struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); | |
486 | struct ahd_linux_target *targ = scsi_transport_target_data(starget); | |
487 | struct ahd_devinfo devinfo; | |
488 | struct ahd_initiator_tinfo *tinfo; | |
489 | struct ahd_tmode_tstate *tstate; | |
490 | char channel = starget->channel + 'A'; | |
1da177e4 | 491 | |
73a25462 HR |
492 | ahd_lock(ahd, &flags); |
493 | ||
494 | BUG_ON(*ahd_targp != NULL); | |
495 | ||
496 | *ahd_targp = starget; | |
497 | memset(targ, 0, sizeof(*targ)); | |
498 | ||
499 | tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, | |
500 | starget->id, &tstate); | |
501 | ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id, | |
502 | CAM_LUN_WILDCARD, channel, | |
503 | ROLE_INITIATOR); | |
504 | spi_min_period(starget) = AHD_SYNCRATE_MAX; /* We can do U320 */ | |
505 | if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0) | |
506 | spi_max_offset(starget) = MAX_OFFSET_PACED_BUG; | |
507 | else | |
508 | spi_max_offset(starget) = MAX_OFFSET_PACED; | |
509 | spi_max_width(starget) = ahd->features & AHD_WIDE; | |
510 | ||
511 | ahd_set_syncrate(ahd, &devinfo, 0, 0, 0, | |
512 | AHD_TRANS_GOAL, /*paused*/FALSE); | |
513 | ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, | |
514 | AHD_TRANS_GOAL, /*paused*/FALSE); | |
515 | ahd_unlock(ahd, &flags); | |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
520 | static void | |
521 | ahd_linux_target_destroy(struct scsi_target *starget) | |
522 | { | |
523 | struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); | |
524 | ||
525 | *ahd_targp = NULL; | |
1da177e4 LT |
526 | } |
527 | ||
528 | static int | |
73a25462 | 529 | ahd_linux_slave_alloc(struct scsi_device *sdev) |
1da177e4 | 530 | { |
73a25462 HR |
531 | struct ahd_softc *ahd = |
532 | *((struct ahd_softc **)sdev->host->hostdata); | |
533 | struct scsi_target *starget = sdev->sdev_target; | |
534 | struct ahd_linux_target *targ = scsi_transport_target_data(starget); | |
535 | struct ahd_linux_device *dev; | |
1da177e4 | 536 | |
1da177e4 | 537 | if (bootverbose) |
73a25462 HR |
538 | printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id); |
539 | ||
540 | BUG_ON(targ->sdev[sdev->lun] != NULL); | |
541 | ||
542 | dev = scsi_transport_device_data(sdev); | |
543 | memset(dev, 0, sizeof(*dev)); | |
544 | ||
545 | /* | |
546 | * We start out life using untagged | |
547 | * transactions of which we allow one. | |
548 | */ | |
549 | dev->openings = 1; | |
550 | ||
1da177e4 | 551 | /* |
73a25462 HR |
552 | * Set maxtags to 0. This will be changed if we |
553 | * later determine that we are dealing with | |
554 | * a tagged queuing capable device. | |
1da177e4 | 555 | */ |
73a25462 HR |
556 | dev->maxtags = 0; |
557 | ||
558 | targ->sdev[sdev->lun] = sdev; | |
559 | ||
1da177e4 LT |
560 | return (0); |
561 | } | |
562 | ||
73a25462 HR |
563 | static int |
564 | ahd_linux_slave_configure(struct scsi_device *sdev) | |
565 | { | |
566 | struct ahd_softc *ahd; | |
567 | ||
568 | ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
569 | if (bootverbose) | |
017560fc | 570 | sdev_printk(KERN_INFO, sdev, "Slave Configure\n"); |
73a25462 HR |
571 | |
572 | ahd_linux_device_queue_depth(sdev); | |
573 | ||
574 | /* Initial Domain Validation */ | |
575 | if (!spi_initial_dv(sdev->sdev_target)) | |
576 | spi_dv_device(sdev); | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
1da177e4 | 581 | static void |
73a25462 | 582 | ahd_linux_slave_destroy(struct scsi_device *sdev) |
1da177e4 LT |
583 | { |
584 | struct ahd_softc *ahd; | |
73a25462 HR |
585 | struct ahd_linux_device *dev = scsi_transport_device_data(sdev); |
586 | struct ahd_linux_target *targ = scsi_transport_target_data(sdev->sdev_target); | |
1da177e4 | 587 | |
73a25462 | 588 | ahd = *((struct ahd_softc **)sdev->host->hostdata); |
1da177e4 | 589 | if (bootverbose) |
73a25462 HR |
590 | printf("%s: Slave Destroy %d\n", ahd_name(ahd), sdev->id); |
591 | ||
592 | BUG_ON(dev->active); | |
593 | ||
594 | targ->sdev[sdev->lun] = NULL; | |
1da177e4 | 595 | |
1da177e4 | 596 | } |
1da177e4 LT |
597 | |
598 | #if defined(__i386__) | |
599 | /* | |
600 | * Return the disk geometry for the given SCSI device. | |
601 | */ | |
602 | static int | |
1da177e4 LT |
603 | ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
604 | sector_t capacity, int geom[]) | |
605 | { | |
606 | uint8_t *bh; | |
1da177e4 LT |
607 | int heads; |
608 | int sectors; | |
609 | int cylinders; | |
610 | int ret; | |
611 | int extended; | |
612 | struct ahd_softc *ahd; | |
613 | ||
614 | ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
615 | ||
1da177e4 | 616 | bh = scsi_bios_ptable(bdev); |
1da177e4 LT |
617 | if (bh) { |
618 | ret = scsi_partsize(bh, capacity, | |
619 | &geom[2], &geom[0], &geom[1]); | |
1da177e4 | 620 | kfree(bh); |
1da177e4 LT |
621 | if (ret != -1) |
622 | return (ret); | |
623 | } | |
624 | heads = 64; | |
625 | sectors = 32; | |
626 | cylinders = aic_sector_div(capacity, heads, sectors); | |
627 | ||
628 | if (aic79xx_extended != 0) | |
629 | extended = 1; | |
630 | else | |
631 | extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0; | |
632 | if (extended && cylinders >= 1024) { | |
633 | heads = 255; | |
634 | sectors = 63; | |
635 | cylinders = aic_sector_div(capacity, heads, sectors); | |
636 | } | |
637 | geom[0] = heads; | |
638 | geom[1] = sectors; | |
639 | geom[2] = cylinders; | |
640 | return (0); | |
641 | } | |
642 | #endif | |
643 | ||
644 | /* | |
645 | * Abort the current SCSI command(s). | |
646 | */ | |
647 | static int | |
73a25462 HR |
648 | ahd_linux_abort(struct scsi_cmnd *cmd) |
649 | { | |
650 | int error; | |
6902f416 HR |
651 | |
652 | error = ahd_linux_queue_abort_cmd(cmd); | |
73a25462 | 653 | |
73a25462 HR |
654 | return error; |
655 | } | |
656 | ||
657 | /* | |
658 | * Attempt to send a target reset message to the device that timed out. | |
659 | */ | |
660 | static int | |
661 | ahd_linux_dev_reset(struct scsi_cmnd *cmd) | |
662 | { | |
6902f416 HR |
663 | struct ahd_softc *ahd; |
664 | struct ahd_linux_device *dev; | |
665 | struct scb *reset_scb; | |
666 | u_int cdb_byte; | |
667 | int retval = SUCCESS; | |
668 | int paused; | |
669 | int wait; | |
670 | struct ahd_initiator_tinfo *tinfo; | |
671 | struct ahd_tmode_tstate *tstate; | |
672 | unsigned long flags; | |
673 | DECLARE_COMPLETION(done); | |
73a25462 | 674 | |
6902f416 HR |
675 | reset_scb = NULL; |
676 | paused = FALSE; | |
677 | wait = FALSE; | |
678 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
679 | ||
680 | scmd_printk(KERN_INFO, cmd, | |
681 | "Attempting to queue a TARGET RESET message:"); | |
682 | ||
683 | printf("CDB:"); | |
684 | for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) | |
685 | printf(" 0x%x", cmd->cmnd[cdb_byte]); | |
686 | printf("\n"); | |
687 | ||
688 | /* | |
689 | * Determine if we currently own this command. | |
690 | */ | |
691 | dev = scsi_transport_device_data(cmd->device); | |
692 | ||
693 | if (dev == NULL) { | |
694 | /* | |
695 | * No target device for this command exists, | |
696 | * so we must not still own the command. | |
697 | */ | |
698 | scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); | |
699 | return SUCCESS; | |
700 | } | |
701 | ||
702 | /* | |
703 | * Generate us a new SCB | |
704 | */ | |
705 | reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX); | |
706 | if (!reset_scb) { | |
707 | scmd_printk(KERN_INFO, cmd, "No SCB available\n"); | |
708 | return FAILED; | |
709 | } | |
710 | ||
711 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
712 | cmd->device->id, &tstate); | |
713 | reset_scb->io_ctx = cmd; | |
714 | reset_scb->platform_data->dev = dev; | |
715 | reset_scb->sg_count = 0; | |
716 | ahd_set_residual(reset_scb, 0); | |
717 | ahd_set_sense_residual(reset_scb, 0); | |
718 | reset_scb->platform_data->xfer_len = 0; | |
719 | reset_scb->hscb->control = 0; | |
720 | reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd); | |
721 | reset_scb->hscb->lun = cmd->device->lun; | |
722 | reset_scb->hscb->cdb_len = 0; | |
723 | reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET; | |
724 | reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE; | |
725 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { | |
726 | reset_scb->flags |= SCB_PACKETIZED; | |
727 | } else { | |
728 | reset_scb->hscb->control |= MK_MESSAGE; | |
729 | } | |
730 | dev->openings--; | |
731 | dev->active++; | |
732 | dev->commands_issued++; | |
733 | ||
734 | ahd_lock(ahd, &flags); | |
735 | ||
736 | LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links); | |
737 | ahd_queue_scb(ahd, reset_scb); | |
738 | ||
739 | ahd->platform_data->eh_done = &done; | |
740 | ahd_unlock(ahd, &flags); | |
741 | ||
742 | printf("%s: Device reset code sleeping\n", ahd_name(ahd)); | |
743 | if (!wait_for_completion_timeout(&done, 5 * HZ)) { | |
744 | ahd_lock(ahd, &flags); | |
745 | ahd->platform_data->eh_done = NULL; | |
746 | ahd_unlock(ahd, &flags); | |
747 | printf("%s: Device reset timer expired (active %d)\n", | |
748 | ahd_name(ahd), dev->active); | |
749 | retval = FAILED; | |
750 | } | |
751 | printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval); | |
752 | ||
753 | return (retval); | |
73a25462 HR |
754 | } |
755 | ||
756 | /* | |
757 | * Reset the SCSI bus. | |
758 | */ | |
759 | static int | |
760 | ahd_linux_bus_reset(struct scsi_cmnd *cmd) | |
1da177e4 LT |
761 | { |
762 | struct ahd_softc *ahd; | |
73a25462 | 763 | int found; |
1da177e4 | 764 | |
1da177e4 | 765 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; |
73a25462 HR |
766 | #ifdef AHD_DEBUG |
767 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) | |
768 | printf("%s: Bus reset called for cmd %p\n", | |
769 | ahd_name(ahd), cmd); | |
770 | #endif | |
422c0d61 | 771 | found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A', |
73a25462 | 772 | /*initiate reset*/TRUE); |
1da177e4 | 773 | |
73a25462 HR |
774 | if (bootverbose) |
775 | printf("%s: SCSI bus reset delivered. " | |
776 | "%d SCBs aborted.\n", ahd_name(ahd), found); | |
1da177e4 | 777 | |
73a25462 HR |
778 | return (SUCCESS); |
779 | } | |
1da177e4 | 780 | |
73a25462 HR |
781 | struct scsi_host_template aic79xx_driver_template = { |
782 | .module = THIS_MODULE, | |
783 | .name = "aic79xx", | |
85a46523 | 784 | .proc_name = "aic79xx", |
73a25462 HR |
785 | .proc_info = ahd_linux_proc_info, |
786 | .info = ahd_linux_info, | |
787 | .queuecommand = ahd_linux_queue, | |
788 | .eh_abort_handler = ahd_linux_abort, | |
789 | .eh_device_reset_handler = ahd_linux_dev_reset, | |
790 | .eh_bus_reset_handler = ahd_linux_bus_reset, | |
791 | #if defined(__i386__) | |
792 | .bios_param = ahd_linux_biosparam, | |
793 | #endif | |
794 | .can_queue = AHD_MAX_QUEUE, | |
795 | .this_id = -1, | |
796 | .cmd_per_lun = 2, | |
797 | .use_clustering = ENABLE_CLUSTERING, | |
798 | .slave_alloc = ahd_linux_slave_alloc, | |
799 | .slave_configure = ahd_linux_slave_configure, | |
800 | .slave_destroy = ahd_linux_slave_destroy, | |
801 | .target_alloc = ahd_linux_target_alloc, | |
802 | .target_destroy = ahd_linux_target_destroy, | |
803 | }; | |
1da177e4 | 804 | |
73a25462 HR |
805 | /******************************** Bus DMA *************************************/ |
806 | int | |
807 | ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent, | |
808 | bus_size_t alignment, bus_size_t boundary, | |
809 | dma_addr_t lowaddr, dma_addr_t highaddr, | |
810 | bus_dma_filter_t *filter, void *filterarg, | |
811 | bus_size_t maxsize, int nsegments, | |
812 | bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag) | |
813 | { | |
814 | bus_dma_tag_t dmat; | |
815 | ||
816 | dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT); | |
817 | if (dmat == NULL) | |
818 | return (ENOMEM); | |
1da177e4 | 819 | |
1da177e4 | 820 | /* |
73a25462 HR |
821 | * Linux is very simplistic about DMA memory. For now don't |
822 | * maintain all specification information. Once Linux supplies | |
823 | * better facilities for doing these operations, or the | |
824 | * needs of this particular driver change, we might need to do | |
825 | * more here. | |
1da177e4 | 826 | */ |
73a25462 HR |
827 | dmat->alignment = alignment; |
828 | dmat->boundary = boundary; | |
829 | dmat->maxsize = maxsize; | |
830 | *ret_tag = dmat; | |
831 | return (0); | |
832 | } | |
1da177e4 | 833 | |
73a25462 HR |
834 | void |
835 | ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat) | |
836 | { | |
837 | free(dmat, M_DEVBUF); | |
838 | } | |
1da177e4 | 839 | |
73a25462 HR |
840 | int |
841 | ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr, | |
842 | int flags, bus_dmamap_t *mapp) | |
843 | { | |
844 | *vaddr = pci_alloc_consistent(ahd->dev_softc, | |
845 | dmat->maxsize, mapp); | |
846 | if (*vaddr == NULL) | |
847 | return (ENOMEM); | |
848 | return(0); | |
849 | } | |
1da177e4 | 850 | |
73a25462 HR |
851 | void |
852 | ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat, | |
853 | void* vaddr, bus_dmamap_t map) | |
854 | { | |
855 | pci_free_consistent(ahd->dev_softc, dmat->maxsize, | |
856 | vaddr, map); | |
857 | } | |
858 | ||
859 | int | |
860 | ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map, | |
861 | void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb, | |
862 | void *cb_arg, int flags) | |
863 | { | |
1da177e4 | 864 | /* |
73a25462 HR |
865 | * Assume for now that this will only be used during |
866 | * initialization and not for per-transaction buffer mapping. | |
1da177e4 | 867 | */ |
73a25462 | 868 | bus_dma_segment_t stack_sg; |
1da177e4 | 869 | |
73a25462 HR |
870 | stack_sg.ds_addr = map; |
871 | stack_sg.ds_len = dmat->maxsize; | |
872 | cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); | |
873 | return (0); | |
874 | } | |
1da177e4 | 875 | |
73a25462 HR |
876 | void |
877 | ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
878 | { | |
879 | } | |
1da177e4 | 880 | |
73a25462 HR |
881 | int |
882 | ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
883 | { | |
884 | /* Nothing to do */ | |
885 | return (0); | |
886 | } | |
1da177e4 | 887 | |
73a25462 | 888 | /********************* Platform Dependent Functions ***************************/ |
73a25462 HR |
889 | static void |
890 | ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value) | |
891 | { | |
1da177e4 | 892 | |
73a25462 HR |
893 | if ((instance >= 0) |
894 | && (instance < NUM_ELEMENTS(aic79xx_iocell_info))) { | |
895 | uint8_t *iocell_info; | |
896 | ||
897 | iocell_info = (uint8_t*)&aic79xx_iocell_info[instance]; | |
898 | iocell_info[index] = value & 0xFFFF; | |
899 | if (bootverbose) | |
900 | printf("iocell[%d:%ld] = %d\n", instance, index, value); | |
1da177e4 | 901 | } |
73a25462 | 902 | } |
1da177e4 | 903 | |
73a25462 HR |
904 | static void |
905 | ahd_linux_setup_tag_info_global(char *p) | |
906 | { | |
907 | int tags, i, j; | |
1da177e4 | 908 | |
73a25462 HR |
909 | tags = simple_strtoul(p + 1, NULL, 0) & 0xff; |
910 | printf("Setting Global Tags= %d\n", tags); | |
911 | ||
912 | for (i = 0; i < NUM_ELEMENTS(aic79xx_tag_info); i++) { | |
913 | for (j = 0; j < AHD_NUM_TARGETS; j++) { | |
914 | aic79xx_tag_info[i].tag_commands[j] = tags; | |
1da177e4 | 915 | } |
1da177e4 | 916 | } |
1da177e4 LT |
917 | } |
918 | ||
1da177e4 | 919 | static void |
73a25462 | 920 | ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) |
1da177e4 | 921 | { |
1da177e4 | 922 | |
73a25462 HR |
923 | if ((instance >= 0) && (targ >= 0) |
924 | && (instance < NUM_ELEMENTS(aic79xx_tag_info)) | |
925 | && (targ < AHD_NUM_TARGETS)) { | |
926 | aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; | |
927 | if (bootverbose) | |
928 | printf("tag_info[%d:%d] = %d\n", instance, targ, value); | |
1da177e4 | 929 | } |
1da177e4 LT |
930 | } |
931 | ||
1ff92730 CH |
932 | static char * |
933 | ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth, | |
934 | void (*callback)(u_long, int, int, int32_t), | |
935 | u_long callback_arg) | |
936 | { | |
937 | char *tok_end; | |
938 | char *tok_end2; | |
939 | int i; | |
940 | int instance; | |
941 | int targ; | |
942 | int done; | |
943 | char tok_list[] = {'.', ',', '{', '}', '\0'}; | |
944 | ||
945 | /* All options use a ':' name/arg separator */ | |
946 | if (*opt_arg != ':') | |
947 | return (opt_arg); | |
948 | opt_arg++; | |
949 | instance = -1; | |
950 | targ = -1; | |
951 | done = FALSE; | |
952 | /* | |
953 | * Restore separator that may be in | |
954 | * the middle of our option argument. | |
955 | */ | |
956 | tok_end = strchr(opt_arg, '\0'); | |
957 | if (tok_end < end) | |
958 | *tok_end = ','; | |
959 | while (!done) { | |
960 | switch (*opt_arg) { | |
961 | case '{': | |
962 | if (instance == -1) { | |
963 | instance = 0; | |
964 | } else { | |
965 | if (depth > 1) { | |
966 | if (targ == -1) | |
967 | targ = 0; | |
968 | } else { | |
969 | printf("Malformed Option %s\n", | |
970 | opt_name); | |
971 | done = TRUE; | |
972 | } | |
973 | } | |
974 | opt_arg++; | |
975 | break; | |
976 | case '}': | |
977 | if (targ != -1) | |
978 | targ = -1; | |
979 | else if (instance != -1) | |
980 | instance = -1; | |
981 | opt_arg++; | |
982 | break; | |
983 | case ',': | |
984 | case '.': | |
985 | if (instance == -1) | |
986 | done = TRUE; | |
987 | else if (targ >= 0) | |
988 | targ++; | |
989 | else if (instance >= 0) | |
990 | instance++; | |
991 | opt_arg++; | |
992 | break; | |
993 | case '\0': | |
994 | done = TRUE; | |
995 | break; | |
996 | default: | |
997 | tok_end = end; | |
998 | for (i = 0; tok_list[i]; i++) { | |
999 | tok_end2 = strchr(opt_arg, tok_list[i]); | |
1000 | if ((tok_end2) && (tok_end2 < tok_end)) | |
1001 | tok_end = tok_end2; | |
1002 | } | |
1003 | callback(callback_arg, instance, targ, | |
1004 | simple_strtol(opt_arg, NULL, 0)); | |
1005 | opt_arg = tok_end; | |
1006 | break; | |
1007 | } | |
1008 | } | |
1009 | return (opt_arg); | |
1010 | } | |
1011 | ||
1da177e4 | 1012 | /* |
73a25462 HR |
1013 | * Handle Linux boot parameters. This routine allows for assigning a value |
1014 | * to a parameter with a ':' between the parameter and the value. | |
1015 | * ie. aic79xx=stpwlev:1,extended | |
1da177e4 LT |
1016 | */ |
1017 | static int | |
73a25462 | 1018 | aic79xx_setup(char *s) |
1da177e4 | 1019 | { |
73a25462 HR |
1020 | int i, n; |
1021 | char *p; | |
1022 | char *end; | |
1da177e4 | 1023 | |
73a25462 HR |
1024 | static struct { |
1025 | const char *name; | |
1026 | uint32_t *flag; | |
1027 | } options[] = { | |
1028 | { "extended", &aic79xx_extended }, | |
1029 | { "no_reset", &aic79xx_no_reset }, | |
1030 | { "verbose", &aic79xx_verbose }, | |
1031 | { "allow_memio", &aic79xx_allow_memio}, | |
1da177e4 | 1032 | #ifdef AHD_DEBUG |
73a25462 | 1033 | { "debug", &ahd_debug }, |
1da177e4 | 1034 | #endif |
73a25462 HR |
1035 | { "reverse_scan", &aic79xx_reverse_scan }, |
1036 | { "periodic_otag", &aic79xx_periodic_otag }, | |
1037 | { "pci_parity", &aic79xx_pci_parity }, | |
1038 | { "seltime", &aic79xx_seltime }, | |
1039 | { "tag_info", NULL }, | |
1040 | { "global_tag_depth", NULL}, | |
1041 | { "slewrate", NULL }, | |
1042 | { "precomp", NULL }, | |
1043 | { "amplitude", NULL }, | |
3fb08612 | 1044 | { "slowcrc", &aic79xx_slowcrc }, |
73a25462 | 1045 | }; |
1da177e4 | 1046 | |
73a25462 | 1047 | end = strchr(s, '\0'); |
1da177e4 | 1048 | |
73a25462 HR |
1049 | /* |
1050 | * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS | |
1051 | * will never be 0 in this case. | |
1052 | */ | |
1053 | n = 0; | |
1054 | ||
1055 | while ((p = strsep(&s, ",.")) != NULL) { | |
1056 | if (*p == '\0') | |
1057 | continue; | |
1058 | for (i = 0; i < NUM_ELEMENTS(options); i++) { | |
1059 | ||
1060 | n = strlen(options[i].name); | |
1061 | if (strncmp(options[i].name, p, n) == 0) | |
1062 | break; | |
1063 | } | |
1064 | if (i == NUM_ELEMENTS(options)) | |
1065 | continue; | |
1066 | ||
1067 | if (strncmp(p, "global_tag_depth", n) == 0) { | |
1068 | ahd_linux_setup_tag_info_global(p + n); | |
1069 | } else if (strncmp(p, "tag_info", n) == 0) { | |
1ff92730 | 1070 | s = ahd_parse_brace_option("tag_info", p + n, end, |
73a25462 HR |
1071 | 2, ahd_linux_setup_tag_info, 0); |
1072 | } else if (strncmp(p, "slewrate", n) == 0) { | |
1ff92730 | 1073 | s = ahd_parse_brace_option("slewrate", |
73a25462 HR |
1074 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1075 | AIC79XX_SLEWRATE_INDEX); | |
1076 | } else if (strncmp(p, "precomp", n) == 0) { | |
1ff92730 | 1077 | s = ahd_parse_brace_option("precomp", |
73a25462 HR |
1078 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1079 | AIC79XX_PRECOMP_INDEX); | |
1080 | } else if (strncmp(p, "amplitude", n) == 0) { | |
1ff92730 | 1081 | s = ahd_parse_brace_option("amplitude", |
73a25462 HR |
1082 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1083 | AIC79XX_AMPLITUDE_INDEX); | |
1084 | } else if (p[n] == ':') { | |
1085 | *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); | |
1086 | } else if (!strncmp(p, "verbose", n)) { | |
1087 | *(options[i].flag) = 1; | |
1088 | } else { | |
1089 | *(options[i].flag) ^= 0xFFFFFFFF; | |
1090 | } | |
1091 | } | |
1092 | return 1; | |
1da177e4 LT |
1093 | } |
1094 | ||
73a25462 HR |
1095 | __setup("aic79xx=", aic79xx_setup); |
1096 | ||
1097 | uint32_t aic79xx_verbose; | |
1da177e4 | 1098 | |
1da177e4 | 1099 | int |
73a25462 | 1100 | ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template) |
1da177e4 | 1101 | { |
73a25462 HR |
1102 | char buf[80]; |
1103 | struct Scsi_Host *host; | |
1104 | char *new_name; | |
1105 | u_long s; | |
e7a1ca1d | 1106 | int retval; |
1da177e4 | 1107 | |
73a25462 HR |
1108 | template->name = ahd->description; |
1109 | host = scsi_host_alloc(template, sizeof(struct ahd_softc *)); | |
1110 | if (host == NULL) | |
1da177e4 LT |
1111 | return (ENOMEM); |
1112 | ||
73a25462 | 1113 | *((struct ahd_softc **)host->hostdata) = ahd; |
73a25462 HR |
1114 | ahd->platform_data->host = host; |
1115 | host->can_queue = AHD_MAX_QUEUE; | |
1116 | host->cmd_per_lun = 2; | |
1117 | host->sg_tablesize = AHD_NSEG; | |
1118 | host->this_id = ahd->our_id; | |
1119 | host->irq = ahd->platform_data->irq; | |
1120 | host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1121 | host->max_lun = AHD_NUM_LUNS; | |
1122 | host->max_channel = 0; | |
1123 | host->sg_tablesize = AHD_NSEG; | |
eb221849 | 1124 | ahd_lock(ahd, &s); |
85a46523 | 1125 | ahd_set_unit(ahd, ahd_linux_unit++); |
eb221849 | 1126 | ahd_unlock(ahd, &s); |
73a25462 HR |
1127 | sprintf(buf, "scsi%d", host->host_no); |
1128 | new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); | |
1129 | if (new_name != NULL) { | |
1130 | strcpy(new_name, buf); | |
1131 | ahd_set_name(ahd, new_name); | |
1132 | } | |
1133 | host->unique_id = ahd->unit; | |
1134 | ahd_linux_initialize_scsi_bus(ahd); | |
1135 | ahd_intr_enable(ahd, TRUE); | |
73a25462 HR |
1136 | |
1137 | host->transportt = ahd_linux_transport_template; | |
1138 | ||
e7a1ca1d JJ |
1139 | retval = scsi_add_host(host, &ahd->dev_softc->dev); |
1140 | if (retval) { | |
1141 | printk(KERN_WARNING "aic79xx: scsi_add_host failed\n"); | |
1142 | scsi_host_put(host); | |
1143 | return retval; | |
1144 | } | |
1145 | ||
73a25462 | 1146 | scsi_scan_host(host); |
e7a1ca1d | 1147 | return 0; |
1da177e4 LT |
1148 | } |
1149 | ||
73a25462 HR |
1150 | uint64_t |
1151 | ahd_linux_get_memsize(void) | |
1da177e4 | 1152 | { |
73a25462 HR |
1153 | struct sysinfo si; |
1154 | ||
1155 | si_meminfo(&si); | |
1156 | return ((uint64_t)si.totalram << PAGE_SHIFT); | |
1da177e4 LT |
1157 | } |
1158 | ||
73a25462 HR |
1159 | /* |
1160 | * Place the SCSI bus into a known state by either resetting it, | |
1161 | * or forcing transfer negotiations on the next command to any | |
1162 | * target. | |
1163 | */ | |
1164 | static void | |
1165 | ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd) | |
1da177e4 | 1166 | { |
73a25462 HR |
1167 | u_int target_id; |
1168 | u_int numtarg; | |
eb221849 | 1169 | unsigned long s; |
1da177e4 | 1170 | |
73a25462 HR |
1171 | target_id = 0; |
1172 | numtarg = 0; | |
1173 | ||
1174 | if (aic79xx_no_reset != 0) | |
1175 | ahd->flags &= ~AHD_RESET_BUS_A; | |
1176 | ||
1177 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) | |
1178 | ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE); | |
1179 | else | |
1180 | numtarg = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1da177e4 | 1181 | |
eb221849 HR |
1182 | ahd_lock(ahd, &s); |
1183 | ||
1da177e4 | 1184 | /* |
73a25462 HR |
1185 | * Force negotiation to async for all targets that |
1186 | * will not see an initial bus reset. | |
1da177e4 | 1187 | */ |
73a25462 HR |
1188 | for (; target_id < numtarg; target_id++) { |
1189 | struct ahd_devinfo devinfo; | |
1190 | struct ahd_initiator_tinfo *tinfo; | |
1191 | struct ahd_tmode_tstate *tstate; | |
1192 | ||
1193 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
1194 | target_id, &tstate); | |
1195 | ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, | |
1196 | CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); | |
1197 | ahd_update_neg_request(ahd, &devinfo, tstate, | |
1198 | tinfo, AHD_NEG_ALWAYS); | |
1199 | } | |
eb221849 | 1200 | ahd_unlock(ahd, &s); |
73a25462 HR |
1201 | /* Give the bus some time to recover */ |
1202 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) { | |
1203 | ahd_freeze_simq(ahd); | |
eb221849 HR |
1204 | msleep(AIC79XX_RESET_DELAY); |
1205 | ahd_release_simq(ahd); | |
73a25462 | 1206 | } |
1da177e4 LT |
1207 | } |
1208 | ||
1209 | int | |
73a25462 | 1210 | ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) |
1da177e4 | 1211 | { |
73a25462 HR |
1212 | ahd->platform_data = |
1213 | malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT); | |
1214 | if (ahd->platform_data == NULL) | |
1215 | return (ENOMEM); | |
1216 | memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); | |
1217 | ahd->platform_data->irq = AHD_LINUX_NOIRQ; | |
1218 | ahd_lockinit(ahd); | |
73a25462 | 1219 | ahd->seltime = (aic79xx_seltime & 0x3) << 4; |
1da177e4 LT |
1220 | return (0); |
1221 | } | |
1222 | ||
73a25462 HR |
1223 | void |
1224 | ahd_platform_free(struct ahd_softc *ahd) | |
1da177e4 | 1225 | { |
73a25462 HR |
1226 | struct scsi_target *starget; |
1227 | int i, j; | |
1da177e4 | 1228 | |
73a25462 | 1229 | if (ahd->platform_data != NULL) { |
73a25462 HR |
1230 | /* destroy all of the device and target objects */ |
1231 | for (i = 0; i < AHD_NUM_TARGETS; i++) { | |
1232 | starget = ahd->platform_data->starget[i]; | |
1233 | if (starget != NULL) { | |
1234 | for (j = 0; j < AHD_NUM_LUNS; j++) { | |
1235 | struct ahd_linux_target *targ = | |
1236 | scsi_transport_target_data(starget); | |
1237 | if (targ->sdev[j] == NULL) | |
1238 | continue; | |
1239 | targ->sdev[j] = NULL; | |
1240 | } | |
1241 | ahd->platform_data->starget[i] = NULL; | |
1242 | } | |
1243 | } | |
1da177e4 | 1244 | |
73a25462 HR |
1245 | if (ahd->platform_data->irq != AHD_LINUX_NOIRQ) |
1246 | free_irq(ahd->platform_data->irq, ahd); | |
1247 | if (ahd->tags[0] == BUS_SPACE_PIO | |
1248 | && ahd->bshs[0].ioport != 0) | |
1249 | release_region(ahd->bshs[0].ioport, 256); | |
1250 | if (ahd->tags[1] == BUS_SPACE_PIO | |
1251 | && ahd->bshs[1].ioport != 0) | |
1252 | release_region(ahd->bshs[1].ioport, 256); | |
1253 | if (ahd->tags[0] == BUS_SPACE_MEMIO | |
1254 | && ahd->bshs[0].maddr != NULL) { | |
1255 | iounmap(ahd->bshs[0].maddr); | |
1256 | release_mem_region(ahd->platform_data->mem_busaddr, | |
1257 | 0x1000); | |
1258 | } | |
97af50f6 JB |
1259 | if (ahd->platform_data->host) |
1260 | scsi_host_put(ahd->platform_data->host); | |
1261 | ||
73a25462 HR |
1262 | free(ahd->platform_data, M_DEVBUF); |
1263 | } | |
1da177e4 LT |
1264 | } |
1265 | ||
73a25462 HR |
1266 | void |
1267 | ahd_platform_init(struct ahd_softc *ahd) | |
1da177e4 | 1268 | { |
73a25462 HR |
1269 | /* |
1270 | * Lookup and commit any modified IO Cell options. | |
1271 | */ | |
1272 | if (ahd->unit < NUM_ELEMENTS(aic79xx_iocell_info)) { | |
1273 | struct ahd_linux_iocell_opts *iocell_opts; | |
1da177e4 | 1274 | |
73a25462 HR |
1275 | iocell_opts = &aic79xx_iocell_info[ahd->unit]; |
1276 | if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP) | |
1277 | AHD_SET_PRECOMP(ahd, iocell_opts->precomp); | |
1278 | if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE) | |
1279 | AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate); | |
1280 | if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE) | |
1281 | AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude); | |
1da177e4 | 1282 | } |
1da177e4 | 1283 | |
1da177e4 LT |
1284 | } |
1285 | ||
73a25462 HR |
1286 | void |
1287 | ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1288 | { |
73a25462 HR |
1289 | ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), |
1290 | SCB_GET_CHANNEL(ahd, scb), | |
1291 | SCB_GET_LUN(scb), SCB_LIST_NULL, | |
1292 | ROLE_UNKNOWN, CAM_REQUEUE_REQ); | |
1da177e4 LT |
1293 | } |
1294 | ||
73a25462 HR |
1295 | void |
1296 | ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, | |
1297 | ahd_queue_alg alg) | |
1da177e4 | 1298 | { |
73a25462 HR |
1299 | struct scsi_target *starget; |
1300 | struct ahd_linux_target *targ; | |
1301 | struct ahd_linux_device *dev; | |
1302 | struct scsi_device *sdev; | |
1303 | int was_queuing; | |
1304 | int now_queuing; | |
1da177e4 | 1305 | |
73a25462 HR |
1306 | starget = ahd->platform_data->starget[devinfo->target]; |
1307 | targ = scsi_transport_target_data(starget); | |
1308 | BUG_ON(targ == NULL); | |
1309 | sdev = targ->sdev[devinfo->lun]; | |
1310 | if (sdev == NULL) | |
1311 | return; | |
1da177e4 | 1312 | |
73a25462 | 1313 | dev = scsi_transport_device_data(sdev); |
1da177e4 | 1314 | |
73a25462 HR |
1315 | if (dev == NULL) |
1316 | return; | |
1317 | was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); | |
1318 | switch (alg) { | |
1319 | default: | |
1320 | case AHD_QUEUE_NONE: | |
1321 | now_queuing = 0; | |
1322 | break; | |
1323 | case AHD_QUEUE_BASIC: | |
1324 | now_queuing = AHD_DEV_Q_BASIC; | |
1325 | break; | |
1326 | case AHD_QUEUE_TAGGED: | |
1327 | now_queuing = AHD_DEV_Q_TAGGED; | |
1328 | break; | |
1329 | } | |
1330 | if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0 | |
1331 | && (was_queuing != now_queuing) | |
1332 | && (dev->active != 0)) { | |
1333 | dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY; | |
1334 | dev->qfrozen++; | |
1da177e4 | 1335 | } |
1da177e4 | 1336 | |
73a25462 HR |
1337 | dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG); |
1338 | if (now_queuing) { | |
1339 | u_int usertags; | |
1da177e4 | 1340 | |
73a25462 HR |
1341 | usertags = ahd_linux_user_tagdepth(ahd, devinfo); |
1342 | if (!was_queuing) { | |
1343 | /* | |
1344 | * Start out agressively and allow our | |
1345 | * dynamic queue depth algorithm to take | |
1346 | * care of the rest. | |
1347 | */ | |
1348 | dev->maxtags = usertags; | |
1349 | dev->openings = dev->maxtags - dev->active; | |
1da177e4 | 1350 | } |
73a25462 HR |
1351 | if (dev->maxtags == 0) { |
1352 | /* | |
1353 | * Queueing is disabled by the user. | |
1354 | */ | |
1355 | dev->openings = 1; | |
1356 | } else if (alg == AHD_QUEUE_TAGGED) { | |
1357 | dev->flags |= AHD_DEV_Q_TAGGED; | |
1358 | if (aic79xx_periodic_otag != 0) | |
1359 | dev->flags |= AHD_DEV_PERIODIC_OTAG; | |
1360 | } else | |
1361 | dev->flags |= AHD_DEV_Q_BASIC; | |
1362 | } else { | |
1363 | /* We can only have one opening. */ | |
1364 | dev->maxtags = 0; | |
1365 | dev->openings = 1 - dev->active; | |
1da177e4 | 1366 | } |
1da177e4 | 1367 | |
73a25462 HR |
1368 | switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { |
1369 | case AHD_DEV_Q_BASIC: | |
0aa800db HR |
1370 | scsi_set_tag_type(sdev, MSG_SIMPLE_TASK); |
1371 | scsi_activate_tcq(sdev, dev->openings + dev->active); | |
73a25462 HR |
1372 | break; |
1373 | case AHD_DEV_Q_TAGGED: | |
0aa800db HR |
1374 | scsi_set_tag_type(sdev, MSG_ORDERED_TASK); |
1375 | scsi_activate_tcq(sdev, dev->openings + dev->active); | |
73a25462 HR |
1376 | break; |
1377 | default: | |
1da177e4 | 1378 | /* |
73a25462 HR |
1379 | * We allow the OS to queue 2 untagged transactions to |
1380 | * us at any time even though we can only execute them | |
1381 | * serially on the controller/device. This should | |
1382 | * remove some latency. | |
1da177e4 | 1383 | */ |
0aa800db | 1384 | scsi_deactivate_tcq(sdev, 1); |
73a25462 | 1385 | break; |
1da177e4 | 1386 | } |
1da177e4 LT |
1387 | } |
1388 | ||
73a25462 HR |
1389 | int |
1390 | ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, | |
1391 | int lun, u_int tag, role_t role, uint32_t status) | |
1da177e4 | 1392 | { |
73a25462 | 1393 | return 0; |
1da177e4 LT |
1394 | } |
1395 | ||
73a25462 HR |
1396 | static u_int |
1397 | ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) | |
1da177e4 | 1398 | { |
73a25462 HR |
1399 | static int warned_user; |
1400 | u_int tags; | |
1da177e4 | 1401 | |
73a25462 HR |
1402 | tags = 0; |
1403 | if ((ahd->user_discenable & devinfo->target_mask) != 0) { | |
1404 | if (ahd->unit >= NUM_ELEMENTS(aic79xx_tag_info)) { | |
1405 | ||
1406 | if (warned_user == 0) { | |
1407 | printf(KERN_WARNING | |
1408 | "aic79xx: WARNING: Insufficient tag_info instances\n" | |
1409 | "aic79xx: for installed controllers. Using defaults\n" | |
1410 | "aic79xx: Please update the aic79xx_tag_info array in\n" | |
1411 | "aic79xx: the aic79xx_osm.c source file.\n"); | |
1412 | warned_user++; | |
1413 | } | |
1414 | tags = AHD_MAX_QUEUE; | |
1415 | } else { | |
1416 | adapter_tag_info_t *tag_info; | |
1417 | ||
1418 | tag_info = &aic79xx_tag_info[ahd->unit]; | |
1419 | tags = tag_info->tag_commands[devinfo->target_offset]; | |
1420 | if (tags > AHD_MAX_QUEUE) | |
1421 | tags = AHD_MAX_QUEUE; | |
1da177e4 LT |
1422 | } |
1423 | } | |
73a25462 | 1424 | return (tags); |
1da177e4 LT |
1425 | } |
1426 | ||
1427 | /* | |
73a25462 | 1428 | * Determines the queue depth for a given device. |
1da177e4 LT |
1429 | */ |
1430 | static void | |
73a25462 | 1431 | ahd_linux_device_queue_depth(struct scsi_device *sdev) |
1da177e4 | 1432 | { |
73a25462 HR |
1433 | struct ahd_devinfo devinfo; |
1434 | u_int tags; | |
1435 | struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
1da177e4 | 1436 | |
73a25462 HR |
1437 | ahd_compile_devinfo(&devinfo, |
1438 | ahd->our_id, | |
1439 | sdev->sdev_target->id, sdev->lun, | |
1440 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1441 | ROLE_INITIATOR); | |
1442 | tags = ahd_linux_user_tagdepth(ahd, &devinfo); | |
1443 | if (tags != 0 && sdev->tagged_supported != 0) { | |
1da177e4 | 1444 | |
73a25462 HR |
1445 | ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED); |
1446 | ahd_print_devinfo(ahd, &devinfo); | |
1447 | printf("Tagged Queuing enabled. Depth %d\n", tags); | |
1448 | } else { | |
1449 | ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE); | |
1450 | } | |
1451 | } | |
1da177e4 | 1452 | |
73a25462 HR |
1453 | static int |
1454 | ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, | |
1455 | struct scsi_cmnd *cmd) | |
1456 | { | |
1457 | struct scb *scb; | |
1458 | struct hardware_scb *hscb; | |
1459 | struct ahd_initiator_tinfo *tinfo; | |
1460 | struct ahd_tmode_tstate *tstate; | |
1461 | u_int col_idx; | |
1462 | uint16_t mask; | |
7b22da38 HR |
1463 | unsigned long flags; |
1464 | ||
1465 | ahd_lock(ahd, &flags); | |
1da177e4 LT |
1466 | |
1467 | /* | |
73a25462 | 1468 | * Get an scb to use. |
1da177e4 | 1469 | */ |
73a25462 HR |
1470 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
1471 | cmd->device->id, &tstate); | |
1472 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 | |
1473 | || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { | |
1474 | col_idx = AHD_NEVER_COL_IDX; | |
1475 | } else { | |
1476 | col_idx = AHD_BUILD_COL_IDX(cmd->device->id, | |
1477 | cmd->device->lun); | |
1478 | } | |
1479 | if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { | |
1480 | ahd->flags |= AHD_RESOURCE_SHORTAGE; | |
7b22da38 | 1481 | ahd_unlock(ahd, &flags); |
73a25462 | 1482 | return SCSI_MLQUEUE_HOST_BUSY; |
1da177e4 | 1483 | } |
1da177e4 | 1484 | |
73a25462 HR |
1485 | scb->io_ctx = cmd; |
1486 | scb->platform_data->dev = dev; | |
1487 | hscb = scb->hscb; | |
1488 | cmd->host_scribble = (char *)scb; | |
1da177e4 | 1489 | |
73a25462 HR |
1490 | /* |
1491 | * Fill out basics of the HSCB. | |
1492 | */ | |
1493 | hscb->control = 0; | |
1494 | hscb->scsiid = BUILD_SCSIID(ahd, cmd); | |
1495 | hscb->lun = cmd->device->lun; | |
1496 | scb->hscb->task_management = 0; | |
1497 | mask = SCB_GET_TARGET_MASK(ahd, scb); | |
1da177e4 | 1498 | |
73a25462 HR |
1499 | if ((ahd->user_discenable & mask) != 0) |
1500 | hscb->control |= DISCENB; | |
1da177e4 | 1501 | |
73a25462 HR |
1502 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) |
1503 | scb->flags |= SCB_PACKETIZED; | |
1da177e4 | 1504 | |
73a25462 HR |
1505 | if ((tstate->auto_negotiate & mask) != 0) { |
1506 | scb->flags |= SCB_AUTO_NEGOTIATE; | |
1507 | scb->hscb->control |= MK_MESSAGE; | |
11668bb6 HR |
1508 | } else if (cmd->cmnd[0] == INQUIRY |
1509 | && (tinfo->curr.offset != 0 | |
1510 | || tinfo->curr.width != MSG_EXT_WDTR_BUS_8_BIT | |
1511 | || tinfo->curr.ppr_options != 0) | |
1512 | && (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ)==0) { | |
1513 | /* | |
1514 | * The SCSI spec requires inquiry | |
1515 | * commands to complete without | |
1516 | * reporting unit attention conditions. | |
1517 | * Because of this, an inquiry command | |
1518 | * that occurs just after a device is | |
1519 | * reset will result in a data phase | |
1520 | * with mismatched negotiated rates. | |
1521 | * The core already forces a renegotiation | |
1522 | * for reset events that are visible to | |
1523 | * our controller or that we initiate, | |
1524 | * but a third party device reset or a | |
1525 | * hot-plug insertion can still cause this | |
1526 | * issue. Therefore, we force a re-negotiation | |
1527 | * for every inquiry command unless we | |
1528 | * are async. | |
1529 | */ | |
1530 | scb->flags |= SCB_NEGOTIATE; | |
1531 | scb->hscb->control |= MK_MESSAGE; | |
73a25462 HR |
1532 | } |
1533 | ||
1534 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { | |
1535 | int msg_bytes; | |
1536 | uint8_t tag_msgs[2]; | |
1537 | ||
1538 | msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); | |
1539 | if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { | |
1540 | hscb->control |= tag_msgs[0]; | |
1541 | if (tag_msgs[0] == MSG_ORDERED_TASK) | |
1542 | dev->commands_since_idle_or_otag = 0; | |
1543 | } else | |
1544 | if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH | |
1545 | && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { | |
1546 | hscb->control |= MSG_ORDERED_TASK; | |
1547 | dev->commands_since_idle_or_otag = 0; | |
1548 | } else { | |
1549 | hscb->control |= MSG_SIMPLE_TASK; | |
1da177e4 | 1550 | } |
73a25462 | 1551 | } |
1da177e4 | 1552 | |
73a25462 HR |
1553 | hscb->cdb_len = cmd->cmd_len; |
1554 | memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); | |
1555 | ||
1556 | scb->platform_data->xfer_len = 0; | |
1557 | ahd_set_residual(scb, 0); | |
1558 | ahd_set_sense_residual(scb, 0); | |
1559 | scb->sg_count = 0; | |
1560 | if (cmd->use_sg != 0) { | |
1561 | void *sg; | |
1562 | struct scatterlist *cur_seg; | |
1563 | u_int nseg; | |
1564 | int dir; | |
1565 | ||
1566 | cur_seg = (struct scatterlist *)cmd->request_buffer; | |
1567 | dir = cmd->sc_data_direction; | |
1568 | nseg = pci_map_sg(ahd->dev_softc, cur_seg, | |
1569 | cmd->use_sg, dir); | |
1570 | scb->platform_data->xfer_len = 0; | |
1571 | for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) { | |
1572 | dma_addr_t addr; | |
1573 | bus_size_t len; | |
1574 | ||
1575 | addr = sg_dma_address(cur_seg); | |
1576 | len = sg_dma_len(cur_seg); | |
1577 | scb->platform_data->xfer_len += len; | |
1578 | sg = ahd_sg_setup(ahd, scb, sg, addr, len, | |
1579 | /*last*/nseg == 1); | |
1da177e4 | 1580 | } |
73a25462 HR |
1581 | } else if (cmd->request_bufflen != 0) { |
1582 | void *sg; | |
1583 | dma_addr_t addr; | |
1584 | int dir; | |
1585 | ||
1586 | sg = scb->sg_list; | |
1587 | dir = cmd->sc_data_direction; | |
1588 | addr = pci_map_single(ahd->dev_softc, | |
1589 | cmd->request_buffer, | |
1590 | cmd->request_bufflen, dir); | |
1591 | scb->platform_data->xfer_len = cmd->request_bufflen; | |
1592 | scb->platform_data->buf_busaddr = addr; | |
1593 | sg = ahd_sg_setup(ahd, scb, sg, addr, | |
1594 | cmd->request_bufflen, /*last*/TRUE); | |
1da177e4 | 1595 | } |
73a25462 HR |
1596 | |
1597 | LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); | |
1598 | dev->openings--; | |
1599 | dev->active++; | |
1600 | dev->commands_issued++; | |
1601 | ||
1602 | if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) | |
1603 | dev->commands_since_idle_or_otag++; | |
1604 | scb->flags |= SCB_ACTIVE; | |
1605 | ahd_queue_scb(ahd, scb); | |
1606 | ||
7b22da38 HR |
1607 | ahd_unlock(ahd, &flags); |
1608 | ||
73a25462 | 1609 | return 0; |
1da177e4 LT |
1610 | } |
1611 | ||
73a25462 HR |
1612 | /* |
1613 | * SCSI controller interrupt handler. | |
1614 | */ | |
1615 | irqreturn_t | |
1616 | ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs) | |
1da177e4 | 1617 | { |
73a25462 HR |
1618 | struct ahd_softc *ahd; |
1619 | u_long flags; | |
1620 | int ours; | |
1da177e4 | 1621 | |
73a25462 HR |
1622 | ahd = (struct ahd_softc *) dev_id; |
1623 | ahd_lock(ahd, &flags); | |
1624 | ours = ahd_intr(ahd); | |
1625 | ahd_unlock(ahd, &flags); | |
1626 | return IRQ_RETVAL(ours); | |
1da177e4 LT |
1627 | } |
1628 | ||
1da177e4 | 1629 | void |
73a25462 HR |
1630 | ahd_send_async(struct ahd_softc *ahd, char channel, |
1631 | u_int target, u_int lun, ac_code code, void *arg) | |
1da177e4 | 1632 | { |
73a25462 HR |
1633 | switch (code) { |
1634 | case AC_TRANSFER_NEG: | |
1635 | { | |
1636 | char buf[80]; | |
1637 | struct scsi_target *starget; | |
73a25462 HR |
1638 | struct info_str info; |
1639 | struct ahd_initiator_tinfo *tinfo; | |
1640 | struct ahd_tmode_tstate *tstate; | |
1641 | unsigned int target_ppr_options; | |
1da177e4 | 1642 | |
73a25462 HR |
1643 | BUG_ON(target == CAM_TARGET_WILDCARD); |
1644 | ||
1645 | info.buffer = buf; | |
1646 | info.length = sizeof(buf); | |
1647 | info.offset = 0; | |
1648 | info.pos = 0; | |
1649 | tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, | |
1650 | target, &tstate); | |
1651 | ||
1652 | /* | |
1653 | * Don't bother reporting results while | |
1654 | * negotiations are still pending. | |
1655 | */ | |
1656 | if (tinfo->curr.period != tinfo->goal.period | |
1657 | || tinfo->curr.width != tinfo->goal.width | |
1658 | || tinfo->curr.offset != tinfo->goal.offset | |
1659 | || tinfo->curr.ppr_options != tinfo->goal.ppr_options) | |
1660 | if (bootverbose == 0) | |
1661 | break; | |
1662 | ||
1663 | /* | |
1664 | * Don't bother reporting results that | |
1665 | * are identical to those last reported. | |
1666 | */ | |
1667 | starget = ahd->platform_data->starget[target]; | |
fc789a93 | 1668 | if (starget == NULL) |
73a25462 HR |
1669 | break; |
1670 | ||
1671 | target_ppr_options = | |
1672 | (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) | |
1673 | + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) | |
3f40d7d6 JB |
1674 | + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) |
1675 | + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) | |
1676 | + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) | |
1677 | + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) | |
88ff29a4 JB |
1678 | + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) |
1679 | + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); | |
73a25462 HR |
1680 | |
1681 | if (tinfo->curr.period == spi_period(starget) | |
1682 | && tinfo->curr.width == spi_width(starget) | |
1683 | && tinfo->curr.offset == spi_offset(starget) | |
1684 | && tinfo->curr.ppr_options == target_ppr_options) | |
1685 | if (bootverbose == 0) | |
1686 | break; | |
1687 | ||
1688 | spi_period(starget) = tinfo->curr.period; | |
1689 | spi_width(starget) = tinfo->curr.width; | |
1690 | spi_offset(starget) = tinfo->curr.offset; | |
a4b53a11 HR |
1691 | spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; |
1692 | spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; | |
1693 | spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; | |
3f40d7d6 JB |
1694 | spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; |
1695 | spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; | |
1696 | spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; | |
1697 | spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; | |
88ff29a4 | 1698 | spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; |
73a25462 | 1699 | spi_display_xfer_agreement(starget); |
1da177e4 | 1700 | break; |
73a25462 HR |
1701 | } |
1702 | case AC_SENT_BDR: | |
1703 | { | |
1704 | WARN_ON(lun != CAM_LUN_WILDCARD); | |
1705 | scsi_report_device_reset(ahd->platform_data->host, | |
1706 | channel - 'A', target); | |
1da177e4 LT |
1707 | break; |
1708 | } | |
73a25462 HR |
1709 | case AC_BUS_RESET: |
1710 | if (ahd->platform_data->host != NULL) { | |
1711 | scsi_report_bus_reset(ahd->platform_data->host, | |
1712 | channel - 'A'); | |
1da177e4 | 1713 | } |
73a25462 HR |
1714 | break; |
1715 | default: | |
1716 | panic("ahd_send_async: Unexpected async event"); | |
1717 | } | |
1da177e4 LT |
1718 | } |
1719 | ||
73a25462 HR |
1720 | /* |
1721 | * Calls the higher level scsi done function and frees the scb. | |
1722 | */ | |
1723 | void | |
1724 | ahd_done(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1725 | { |
73a25462 HR |
1726 | struct scsi_cmnd *cmd; |
1727 | struct ahd_linux_device *dev; | |
1da177e4 | 1728 | |
73a25462 HR |
1729 | if ((scb->flags & SCB_ACTIVE) == 0) { |
1730 | printf("SCB %d done'd twice\n", SCB_GET_TAG(scb)); | |
1731 | ahd_dump_card_state(ahd); | |
1732 | panic("Stopping for safety"); | |
1da177e4 | 1733 | } |
73a25462 HR |
1734 | LIST_REMOVE(scb, pending_links); |
1735 | cmd = scb->io_ctx; | |
1736 | dev = scb->platform_data->dev; | |
1737 | dev->active--; | |
1738 | dev->openings++; | |
1739 | if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) { | |
1740 | cmd->result &= ~(CAM_DEV_QFRZN << 16); | |
1741 | dev->qfrozen--; | |
1742 | } | |
1743 | ahd_linux_unmap_scb(ahd, scb); | |
1da177e4 LT |
1744 | |
1745 | /* | |
73a25462 HR |
1746 | * Guard against stale sense data. |
1747 | * The Linux mid-layer assumes that sense | |
1748 | * was retrieved anytime the first byte of | |
1749 | * the sense buffer looks "sane". | |
1da177e4 | 1750 | */ |
73a25462 HR |
1751 | cmd->sense_buffer[0] = 0; |
1752 | if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) { | |
1753 | uint32_t amount_xferred; | |
1da177e4 | 1754 | |
73a25462 HR |
1755 | amount_xferred = |
1756 | ahd_get_transfer_length(scb) - ahd_get_residual(scb); | |
1757 | if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) { | |
1da177e4 | 1758 | #ifdef AHD_DEBUG |
73a25462 HR |
1759 | if ((ahd_debug & AHD_SHOW_MISC) != 0) { |
1760 | ahd_print_path(ahd, scb); | |
1761 | printf("Set CAM_UNCOR_PARITY\n"); | |
1762 | } | |
1da177e4 | 1763 | #endif |
73a25462 HR |
1764 | ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); |
1765 | #ifdef AHD_REPORT_UNDERFLOWS | |
1da177e4 | 1766 | /* |
73a25462 HR |
1767 | * This code is disabled by default as some |
1768 | * clients of the SCSI system do not properly | |
1769 | * initialize the underflow parameter. This | |
1770 | * results in spurious termination of commands | |
1771 | * that complete as expected (e.g. underflow is | |
1772 | * allowed as command can return variable amounts | |
1773 | * of data. | |
1da177e4 | 1774 | */ |
73a25462 HR |
1775 | } else if (amount_xferred < scb->io_ctx->underflow) { |
1776 | u_int i; | |
1da177e4 | 1777 | |
73a25462 HR |
1778 | ahd_print_path(ahd, scb); |
1779 | printf("CDB:"); | |
1780 | for (i = 0; i < scb->io_ctx->cmd_len; i++) | |
1781 | printf(" 0x%x", scb->io_ctx->cmnd[i]); | |
1782 | printf("\n"); | |
1783 | ahd_print_path(ahd, scb); | |
1784 | printf("Saw underflow (%ld of %ld bytes). " | |
1785 | "Treated as error\n", | |
1786 | ahd_get_residual(scb), | |
1787 | ahd_get_transfer_length(scb)); | |
1788 | ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); | |
1789 | #endif | |
1790 | } else { | |
1791 | ahd_set_transaction_status(scb, CAM_REQ_CMP); | |
1da177e4 | 1792 | } |
73a25462 HR |
1793 | } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { |
1794 | ahd_linux_handle_scsi_status(ahd, cmd->device, scb); | |
1795 | } | |
1da177e4 | 1796 | |
73a25462 HR |
1797 | if (dev->openings == 1 |
1798 | && ahd_get_transaction_status(scb) == CAM_REQ_CMP | |
1799 | && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL) | |
1800 | dev->tag_success_count++; | |
1801 | /* | |
1802 | * Some devices deal with temporary internal resource | |
1803 | * shortages by returning queue full. When the queue | |
1804 | * full occurrs, we throttle back. Slowly try to get | |
1805 | * back to our previous queue depth. | |
1806 | */ | |
1807 | if ((dev->openings + dev->active) < dev->maxtags | |
1808 | && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) { | |
1809 | dev->tag_success_count = 0; | |
1810 | dev->openings++; | |
1811 | } | |
1da177e4 | 1812 | |
73a25462 HR |
1813 | if (dev->active == 0) |
1814 | dev->commands_since_idle_or_otag = 0; | |
1da177e4 | 1815 | |
73a25462 HR |
1816 | if ((scb->flags & SCB_RECOVERY_SCB) != 0) { |
1817 | printf("Recovery SCB completes\n"); | |
1818 | if (ahd_get_transaction_status(scb) == CAM_BDR_SENT | |
1819 | || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) | |
1820 | ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); | |
7b22da38 HR |
1821 | |
1822 | if (ahd->platform_data->eh_done) | |
1823 | complete(ahd->platform_data->eh_done); | |
1da177e4 | 1824 | } |
73a25462 HR |
1825 | |
1826 | ahd_free_scb(ahd, scb); | |
1827 | ahd_linux_queue_cmd_complete(ahd, cmd); | |
1da177e4 LT |
1828 | } |
1829 | ||
1830 | static void | |
73a25462 HR |
1831 | ahd_linux_handle_scsi_status(struct ahd_softc *ahd, |
1832 | struct scsi_device *sdev, struct scb *scb) | |
1da177e4 | 1833 | { |
73a25462 HR |
1834 | struct ahd_devinfo devinfo; |
1835 | struct ahd_linux_device *dev = scsi_transport_device_data(sdev); | |
1da177e4 | 1836 | |
73a25462 HR |
1837 | ahd_compile_devinfo(&devinfo, |
1838 | ahd->our_id, | |
1839 | sdev->sdev_target->id, sdev->lun, | |
1840 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1841 | ROLE_INITIATOR); | |
1842 | ||
1843 | /* | |
1844 | * We don't currently trust the mid-layer to | |
1845 | * properly deal with queue full or busy. So, | |
1846 | * when one occurs, we tell the mid-layer to | |
1847 | * unconditionally requeue the command to us | |
1848 | * so that we can retry it ourselves. We also | |
1849 | * implement our own throttling mechanism so | |
1850 | * we don't clobber the device with too many | |
1851 | * commands. | |
1852 | */ | |
1853 | switch (ahd_get_scsi_status(scb)) { | |
1854 | default: | |
1855 | break; | |
1856 | case SCSI_STATUS_CHECK_COND: | |
1857 | case SCSI_STATUS_CMD_TERMINATED: | |
1858 | { | |
1859 | struct scsi_cmnd *cmd; | |
1da177e4 LT |
1860 | |
1861 | /* | |
73a25462 HR |
1862 | * Copy sense information to the OS's cmd |
1863 | * structure if it is available. | |
1da177e4 | 1864 | */ |
73a25462 HR |
1865 | cmd = scb->io_ctx; |
1866 | if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) { | |
1867 | struct scsi_status_iu_header *siu; | |
1868 | u_int sense_size; | |
1869 | u_int sense_offset; | |
1da177e4 | 1870 | |
73a25462 HR |
1871 | if (scb->flags & SCB_SENSE) { |
1872 | sense_size = MIN(sizeof(struct scsi_sense_data) | |
1873 | - ahd_get_sense_residual(scb), | |
1874 | sizeof(cmd->sense_buffer)); | |
1875 | sense_offset = 0; | |
1876 | } else { | |
1877 | /* | |
1878 | * Copy only the sense data into the provided | |
1879 | * buffer. | |
1880 | */ | |
1881 | siu = (struct scsi_status_iu_header *) | |
1882 | scb->sense_data; | |
1883 | sense_size = MIN(scsi_4btoul(siu->sense_length), | |
1884 | sizeof(cmd->sense_buffer)); | |
1885 | sense_offset = SIU_SENSE_OFFSET(siu); | |
1886 | } | |
1da177e4 | 1887 | |
73a25462 HR |
1888 | memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); |
1889 | memcpy(cmd->sense_buffer, | |
1890 | ahd_get_sense_buf(ahd, scb) | |
1891 | + sense_offset, sense_size); | |
1892 | cmd->result |= (DRIVER_SENSE << 24); | |
1da177e4 | 1893 | |
1da177e4 | 1894 | #ifdef AHD_DEBUG |
73a25462 HR |
1895 | if (ahd_debug & AHD_SHOW_SENSE) { |
1896 | int i; | |
1da177e4 | 1897 | |
73a25462 HR |
1898 | printf("Copied %d bytes of sense data at %d:", |
1899 | sense_size, sense_offset); | |
1900 | for (i = 0; i < sense_size; i++) { | |
1da177e4 | 1901 | if ((i & 0xF) == 0) |
73a25462 HR |
1902 | printf("\n"); |
1903 | printf("0x%x ", cmd->sense_buffer[i]); | |
1da177e4 LT |
1904 | } |
1905 | printf("\n"); | |
1906 | } | |
1907 | #endif | |
1da177e4 LT |
1908 | } |
1909 | break; | |
73a25462 HR |
1910 | } |
1911 | case SCSI_STATUS_QUEUE_FULL: | |
1912 | /* | |
1913 | * By the time the core driver has returned this | |
1914 | * command, all other commands that were queued | |
1915 | * to us but not the device have been returned. | |
1916 | * This ensures that dev->active is equal to | |
1917 | * the number of commands actually queued to | |
1918 | * the device. | |
1919 | */ | |
1920 | dev->tag_success_count = 0; | |
1921 | if (dev->active != 0) { | |
1da177e4 | 1922 | /* |
73a25462 HR |
1923 | * Drop our opening count to the number |
1924 | * of commands currently outstanding. | |
1da177e4 | 1925 | */ |
73a25462 | 1926 | dev->openings = 0; |
1da177e4 | 1927 | #ifdef AHD_DEBUG |
73a25462 HR |
1928 | if ((ahd_debug & AHD_SHOW_QFULL) != 0) { |
1929 | ahd_print_path(ahd, scb); | |
1930 | printf("Dropping tag count to %d\n", | |
1931 | dev->active); | |
1da177e4 LT |
1932 | } |
1933 | #endif | |
73a25462 | 1934 | if (dev->active == dev->tags_on_last_queuefull) { |
1da177e4 | 1935 | |
73a25462 | 1936 | dev->last_queuefull_same_count++; |
1da177e4 | 1937 | /* |
73a25462 HR |
1938 | * If we repeatedly see a queue full |
1939 | * at the same queue depth, this | |
1940 | * device has a fixed number of tag | |
1941 | * slots. Lock in this tag depth | |
1942 | * so we stop seeing queue fulls from | |
1943 | * this device. | |
1da177e4 | 1944 | */ |
73a25462 HR |
1945 | if (dev->last_queuefull_same_count |
1946 | == AHD_LOCK_TAGS_COUNT) { | |
1947 | dev->maxtags = dev->active; | |
1948 | ahd_print_path(ahd, scb); | |
1949 | printf("Locking max tag count at %d\n", | |
1950 | dev->active); | |
1da177e4 | 1951 | } |
73a25462 HR |
1952 | } else { |
1953 | dev->tags_on_last_queuefull = dev->active; | |
1954 | dev->last_queuefull_same_count = 0; | |
1da177e4 | 1955 | } |
73a25462 HR |
1956 | ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); |
1957 | ahd_set_scsi_status(scb, SCSI_STATUS_OK); | |
1958 | ahd_platform_set_tags(ahd, &devinfo, | |
1959 | (dev->flags & AHD_DEV_Q_BASIC) | |
1960 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
1da177e4 LT |
1961 | break; |
1962 | } | |
1da177e4 | 1963 | /* |
73a25462 HR |
1964 | * Drop down to a single opening, and treat this |
1965 | * as if the target returned BUSY SCSI status. | |
1da177e4 | 1966 | */ |
73a25462 HR |
1967 | dev->openings = 1; |
1968 | ahd_platform_set_tags(ahd, &devinfo, | |
1969 | (dev->flags & AHD_DEV_Q_BASIC) | |
1970 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
1971 | ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); | |
1972 | } | |
1da177e4 LT |
1973 | } |
1974 | ||
73a25462 HR |
1975 | static void |
1976 | ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) | |
1da177e4 | 1977 | { |
6902f416 HR |
1978 | int status; |
1979 | int new_status = DID_OK; | |
1980 | int do_fallback = 0; | |
1981 | int scsi_status; | |
1982 | ||
1da177e4 | 1983 | /* |
73a25462 HR |
1984 | * Map CAM error codes into Linux Error codes. We |
1985 | * avoid the conversion so that the DV code has the | |
1986 | * full error information available when making | |
1987 | * state change decisions. | |
1da177e4 | 1988 | */ |
6902f416 HR |
1989 | |
1990 | status = ahd_cmd_get_transaction_status(cmd); | |
1991 | switch (status) { | |
1992 | case CAM_REQ_INPROG: | |
1993 | case CAM_REQ_CMP: | |
1994 | new_status = DID_OK; | |
1995 | break; | |
1996 | case CAM_AUTOSENSE_FAIL: | |
1997 | new_status = DID_ERROR; | |
1998 | /* Fallthrough */ | |
1999 | case CAM_SCSI_STATUS_ERROR: | |
2000 | scsi_status = ahd_cmd_get_scsi_status(cmd); | |
2001 | ||
2002 | switch(scsi_status) { | |
2003 | case SCSI_STATUS_CMD_TERMINATED: | |
2004 | case SCSI_STATUS_CHECK_COND: | |
2005 | if ((cmd->result >> 24) != DRIVER_SENSE) { | |
2006 | do_fallback = 1; | |
2007 | } else { | |
2008 | struct scsi_sense_data *sense; | |
2009 | ||
2010 | sense = (struct scsi_sense_data *) | |
2011 | &cmd->sense_buffer; | |
2012 | if (sense->extra_len >= 5 && | |
2013 | (sense->add_sense_code == 0x47 | |
2014 | || sense->add_sense_code == 0x48)) | |
2015 | do_fallback = 1; | |
2016 | } | |
73a25462 HR |
2017 | break; |
2018 | default: | |
73a25462 HR |
2019 | break; |
2020 | } | |
6902f416 HR |
2021 | break; |
2022 | case CAM_REQ_ABORTED: | |
2023 | new_status = DID_ABORT; | |
2024 | break; | |
2025 | case CAM_BUSY: | |
2026 | new_status = DID_BUS_BUSY; | |
2027 | break; | |
2028 | case CAM_REQ_INVALID: | |
2029 | case CAM_PATH_INVALID: | |
2030 | new_status = DID_BAD_TARGET; | |
2031 | break; | |
2032 | case CAM_SEL_TIMEOUT: | |
2033 | new_status = DID_NO_CONNECT; | |
2034 | break; | |
2035 | case CAM_SCSI_BUS_RESET: | |
2036 | case CAM_BDR_SENT: | |
2037 | new_status = DID_RESET; | |
2038 | break; | |
2039 | case CAM_UNCOR_PARITY: | |
2040 | new_status = DID_PARITY; | |
2041 | do_fallback = 1; | |
2042 | break; | |
2043 | case CAM_CMD_TIMEOUT: | |
2044 | new_status = DID_TIME_OUT; | |
2045 | do_fallback = 1; | |
2046 | break; | |
2047 | case CAM_REQ_CMP_ERR: | |
2048 | case CAM_UNEXP_BUSFREE: | |
2049 | case CAM_DATA_RUN_ERR: | |
2050 | new_status = DID_ERROR; | |
2051 | do_fallback = 1; | |
2052 | break; | |
2053 | case CAM_UA_ABORT: | |
2054 | case CAM_NO_HBA: | |
2055 | case CAM_SEQUENCE_FAIL: | |
2056 | case CAM_CCB_LEN_ERR: | |
2057 | case CAM_PROVIDE_FAIL: | |
2058 | case CAM_REQ_TERMIO: | |
2059 | case CAM_UNREC_HBA_ERROR: | |
2060 | case CAM_REQ_TOO_BIG: | |
2061 | new_status = DID_ERROR; | |
2062 | break; | |
2063 | case CAM_REQUEUE_REQ: | |
2064 | new_status = DID_REQUEUE; | |
2065 | break; | |
2066 | default: | |
2067 | /* We should never get here */ | |
2068 | new_status = DID_ERROR; | |
2069 | break; | |
2070 | } | |
73a25462 | 2071 | |
6902f416 HR |
2072 | if (do_fallback) { |
2073 | printf("%s: device overrun (status %x) on %d:%d:%d\n", | |
2074 | ahd_name(ahd), status, cmd->device->channel, | |
2075 | cmd->device->id, cmd->device->lun); | |
73a25462 HR |
2076 | } |
2077 | ||
6902f416 HR |
2078 | ahd_cmd_set_transaction_status(cmd, new_status); |
2079 | ||
73a25462 | 2080 | cmd->scsi_done(cmd); |
1da177e4 LT |
2081 | } |
2082 | ||
1da177e4 | 2083 | void |
73a25462 | 2084 | ahd_freeze_simq(struct ahd_softc *ahd) |
1da177e4 | 2085 | { |
7b22da38 | 2086 | scsi_block_requests(ahd->platform_data->host); |
1da177e4 LT |
2087 | } |
2088 | ||
1da177e4 | 2089 | void |
73a25462 | 2090 | ahd_release_simq(struct ahd_softc *ahd) |
1da177e4 | 2091 | { |
7b22da38 | 2092 | scsi_unblock_requests(ahd->platform_data->host); |
73a25462 | 2093 | } |
1da177e4 | 2094 | |
73a25462 | 2095 | static int |
6902f416 | 2096 | ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd) |
73a25462 HR |
2097 | { |
2098 | struct ahd_softc *ahd; | |
2099 | struct ahd_linux_device *dev; | |
2100 | struct scb *pending_scb; | |
2101 | u_int saved_scbptr; | |
2102 | u_int active_scbptr; | |
2103 | u_int last_phase; | |
2104 | u_int saved_scsiid; | |
2105 | u_int cdb_byte; | |
2106 | int retval; | |
2107 | int was_paused; | |
2108 | int paused; | |
2109 | int wait; | |
2110 | int disconnected; | |
2111 | ahd_mode_state saved_modes; | |
4065a413 | 2112 | unsigned long flags; |
73a25462 HR |
2113 | |
2114 | pending_scb = NULL; | |
2115 | paused = FALSE; | |
2116 | wait = FALSE; | |
2117 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
2118 | ||
017560fc | 2119 | scmd_printk(KERN_INFO, cmd, |
6902f416 | 2120 | "Attempting to queue an ABORT message:"); |
73a25462 HR |
2121 | |
2122 | printf("CDB:"); | |
2123 | for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) | |
2124 | printf(" 0x%x", cmd->cmnd[cdb_byte]); | |
2125 | printf("\n"); | |
2126 | ||
4065a413 | 2127 | ahd_lock(ahd, &flags); |
1da177e4 | 2128 | |
1da177e4 | 2129 | /* |
73a25462 HR |
2130 | * First determine if we currently own this command. |
2131 | * Start by searching the device queue. If not found | |
2132 | * there, check the pending_scb list. If not found | |
2133 | * at all, and the system wanted us to just abort the | |
2134 | * command, return success. | |
1da177e4 | 2135 | */ |
73a25462 HR |
2136 | dev = scsi_transport_device_data(cmd->device); |
2137 | ||
2138 | if (dev == NULL) { | |
2139 | /* | |
2140 | * No target device for this command exists, | |
2141 | * so we must not still own the command. | |
2142 | */ | |
017560fc | 2143 | scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); |
73a25462 HR |
2144 | retval = SUCCESS; |
2145 | goto no_cmd; | |
2146 | } | |
1da177e4 | 2147 | |
1da177e4 | 2148 | /* |
73a25462 | 2149 | * See if we can find a matching cmd in the pending list. |
1da177e4 | 2150 | */ |
73a25462 HR |
2151 | LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { |
2152 | if (pending_scb->io_ctx == cmd) | |
2153 | break; | |
1da177e4 LT |
2154 | } |
2155 | ||
73a25462 | 2156 | if (pending_scb == NULL) { |
017560fc | 2157 | scmd_printk(KERN_INFO, cmd, "Command not found\n"); |
73a25462 | 2158 | goto no_cmd; |
1da177e4 | 2159 | } |
1da177e4 | 2160 | |
73a25462 HR |
2161 | if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { |
2162 | /* | |
2163 | * We can't queue two recovery actions using the same SCB | |
2164 | */ | |
2165 | retval = FAILED; | |
2166 | goto done; | |
2167 | } | |
1da177e4 | 2168 | |
1da177e4 | 2169 | /* |
73a25462 HR |
2170 | * Ensure that the card doesn't do anything |
2171 | * behind our back. Also make sure that we | |
2172 | * didn't "just" miss an interrupt that would | |
2173 | * affect this cmd. | |
1da177e4 | 2174 | */ |
73a25462 HR |
2175 | was_paused = ahd_is_paused(ahd); |
2176 | ahd_pause_and_flushwork(ahd); | |
2177 | paused = TRUE; | |
1da177e4 | 2178 | |
73a25462 | 2179 | if ((pending_scb->flags & SCB_ACTIVE) == 0) { |
017560fc | 2180 | scmd_printk(KERN_INFO, cmd, "Command already completed\n"); |
73a25462 HR |
2181 | goto no_cmd; |
2182 | } | |
1da177e4 | 2183 | |
73a25462 HR |
2184 | printf("%s: At time of recovery, card was %spaused\n", |
2185 | ahd_name(ahd), was_paused ? "" : "not "); | |
2186 | ahd_dump_card_state(ahd); | |
1da177e4 | 2187 | |
73a25462 | 2188 | disconnected = TRUE; |
6902f416 HR |
2189 | if (ahd_search_qinfifo(ahd, cmd->device->id, |
2190 | cmd->device->channel + 'A', | |
2191 | cmd->device->lun, | |
2192 | pending_scb->hscb->tag, | |
2193 | ROLE_INITIATOR, CAM_REQ_ABORTED, | |
2194 | SEARCH_COMPLETE) > 0) { | |
2195 | printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", | |
2196 | ahd_name(ahd), cmd->device->channel, | |
2197 | cmd->device->id, cmd->device->lun); | |
2198 | retval = SUCCESS; | |
2199 | goto done; | |
73a25462 | 2200 | } |
1da177e4 | 2201 | |
73a25462 HR |
2202 | saved_modes = ahd_save_modes(ahd); |
2203 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); | |
2204 | last_phase = ahd_inb(ahd, LASTPHASE); | |
2205 | saved_scbptr = ahd_get_scbptr(ahd); | |
2206 | active_scbptr = saved_scbptr; | |
6902f416 | 2207 | if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { |
73a25462 | 2208 | struct scb *bus_scb; |
1da177e4 | 2209 | |
73a25462 HR |
2210 | bus_scb = ahd_lookup_scb(ahd, active_scbptr); |
2211 | if (bus_scb == pending_scb) | |
2212 | disconnected = FALSE; | |
1da177e4 | 2213 | } |
73a25462 HR |
2214 | |
2215 | /* | |
2216 | * At this point, pending_scb is the scb associated with the | |
2217 | * passed in command. That command is currently active on the | |
2218 | * bus or is in the disconnected state. | |
2219 | */ | |
2220 | saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); | |
6902f416 HR |
2221 | if (last_phase != P_BUSFREE |
2222 | && SCB_GET_TAG(pending_scb) == active_scbptr) { | |
73a25462 | 2223 | |
1da177e4 | 2224 | /* |
73a25462 HR |
2225 | * We're active on the bus, so assert ATN |
2226 | * and hope that the target responds. | |
1da177e4 | 2227 | */ |
73a25462 | 2228 | pending_scb = ahd_lookup_scb(ahd, active_scbptr); |
6902f416 | 2229 | pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
73a25462 HR |
2230 | ahd_outb(ahd, MSG_OUT, HOST_MSG); |
2231 | ahd_outb(ahd, SCSISIGO, last_phase|ATNO); | |
6902f416 | 2232 | scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n"); |
73a25462 HR |
2233 | wait = TRUE; |
2234 | } else if (disconnected) { | |
2235 | ||
2236 | /* | |
2237 | * Actually re-queue this SCB in an attempt | |
2238 | * to select the device before it reconnects. | |
2239 | */ | |
6902f416 | 2240 | pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
73a25462 HR |
2241 | ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); |
2242 | pending_scb->hscb->cdb_len = 0; | |
2243 | pending_scb->hscb->task_attribute = 0; | |
2244 | pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; | |
2245 | ||
2246 | if ((pending_scb->flags & SCB_PACKETIZED) != 0) { | |
1da177e4 | 2247 | /* |
73a25462 HR |
2248 | * Mark the SCB has having an outstanding |
2249 | * task management function. Should the command | |
2250 | * complete normally before the task management | |
2251 | * function can be sent, the host will be notified | |
2252 | * to abort our requeued SCB. | |
1da177e4 | 2253 | */ |
73a25462 HR |
2254 | ahd_outb(ahd, SCB_TASK_MANAGEMENT, |
2255 | pending_scb->hscb->task_management); | |
2256 | } else { | |
2257 | /* | |
2258 | * If non-packetized, set the MK_MESSAGE control | |
2259 | * bit indicating that we desire to send a message. | |
2260 | * We also set the disconnected flag since there is | |
2261 | * no guarantee that our SCB control byte matches | |
2262 | * the version on the card. We don't want the | |
2263 | * sequencer to abort the command thinking an | |
2264 | * unsolicited reselection occurred. | |
2265 | */ | |
2266 | pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; | |
2267 | ||
2268 | /* | |
2269 | * The sequencer will never re-reference the | |
2270 | * in-core SCB. To make sure we are notified | |
2271 | * during reslection, set the MK_MESSAGE flag in | |
2272 | * the card's copy of the SCB. | |
2273 | */ | |
2274 | ahd_outb(ahd, SCB_CONTROL, | |
2275 | ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); | |
1da177e4 | 2276 | } |
73a25462 | 2277 | |
1da177e4 | 2278 | /* |
73a25462 HR |
2279 | * Clear out any entries in the QINFIFO first |
2280 | * so we are the next SCB for this target | |
2281 | * to run. | |
1da177e4 | 2282 | */ |
73a25462 HR |
2283 | ahd_search_qinfifo(ahd, cmd->device->id, |
2284 | cmd->device->channel + 'A', cmd->device->lun, | |
2285 | SCB_LIST_NULL, ROLE_INITIATOR, | |
2286 | CAM_REQUEUE_REQ, SEARCH_COMPLETE); | |
2287 | ahd_qinfifo_requeue_tail(ahd, pending_scb); | |
2288 | ahd_set_scbptr(ahd, saved_scbptr); | |
2289 | ahd_print_path(ahd, pending_scb); | |
2290 | printf("Device is disconnected, re-queuing SCB\n"); | |
2291 | wait = TRUE; | |
2292 | } else { | |
017560fc | 2293 | scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); |
73a25462 HR |
2294 | retval = FAILED; |
2295 | goto done; | |
1da177e4 | 2296 | } |
1da177e4 | 2297 | |
73a25462 | 2298 | no_cmd: |
1da177e4 | 2299 | /* |
73a25462 HR |
2300 | * Our assumption is that if we don't have the command, no |
2301 | * recovery action was required, so we return success. Again, | |
2302 | * the semantics of the mid-layer recovery engine are not | |
2303 | * well defined, so this may change in time. | |
1da177e4 | 2304 | */ |
73a25462 HR |
2305 | retval = SUCCESS; |
2306 | done: | |
2307 | if (paused) | |
2308 | ahd_unpause(ahd); | |
2309 | if (wait) { | |
7b22da38 | 2310 | DECLARE_COMPLETION(done); |
1da177e4 | 2311 | |
7b22da38 | 2312 | ahd->platform_data->eh_done = &done; |
4065a413 CH |
2313 | ahd_unlock(ahd, &flags); |
2314 | ||
11668bb6 | 2315 | printf("%s: Recovery code sleeping\n", ahd_name(ahd)); |
7b22da38 HR |
2316 | if (!wait_for_completion_timeout(&done, 5 * HZ)) { |
2317 | ahd_lock(ahd, &flags); | |
2318 | ahd->platform_data->eh_done = NULL; | |
2319 | ahd_unlock(ahd, &flags); | |
11668bb6 HR |
2320 | printf("%s: Timer Expired (active %d)\n", |
2321 | ahd_name(ahd), dev->active); | |
73a25462 | 2322 | retval = FAILED; |
1da177e4 | 2323 | } |
7b22da38 | 2324 | printf("Recovery code awake\n"); |
eb221849 HR |
2325 | } else |
2326 | ahd_unlock(ahd, &flags); | |
2327 | ||
7b22da38 HR |
2328 | if (retval != SUCCESS) |
2329 | printf("%s: Command abort returning 0x%x\n", | |
2330 | ahd_name(ahd), retval); | |
2331 | ||
2332 | return retval; | |
1da177e4 LT |
2333 | } |
2334 | ||
73a25462 | 2335 | static void ahd_linux_set_width(struct scsi_target *starget, int width) |
1da177e4 | 2336 | { |
73a25462 HR |
2337 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2338 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2339 | struct ahd_devinfo devinfo; | |
2340 | unsigned long flags; | |
1da177e4 | 2341 | |
73a25462 HR |
2342 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2343 | starget->channel + 'A', ROLE_INITIATOR); | |
2344 | ahd_lock(ahd, &flags); | |
2345 | ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); | |
2346 | ahd_unlock(ahd, &flags); | |
2347 | } | |
2348 | ||
2349 | static void ahd_linux_set_period(struct scsi_target *starget, int period) | |
2350 | { | |
2351 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2352 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2353 | struct ahd_tmode_tstate *tstate; | |
2354 | struct ahd_initiator_tinfo *tinfo | |
2355 | = ahd_fetch_transinfo(ahd, | |
2356 | starget->channel + 'A', | |
2357 | shost->this_id, starget->id, &tstate); | |
2358 | struct ahd_devinfo devinfo; | |
2359 | unsigned int ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 | 2360 | unsigned int dt; |
73a25462 HR |
2361 | unsigned long flags; |
2362 | unsigned long offset = tinfo->goal.offset; | |
1da177e4 | 2363 | |
a4b53a11 HR |
2364 | #ifdef AHD_DEBUG |
2365 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2366 | printf("%s: set period to %d\n", ahd_name(ahd), period); | |
2367 | #endif | |
73a25462 HR |
2368 | if (offset == 0) |
2369 | offset = MAX_OFFSET; | |
1da177e4 | 2370 | |
73a25462 HR |
2371 | if (period < 8) |
2372 | period = 8; | |
2373 | if (period < 10) { | |
2374 | ppr_options |= MSG_EXT_PPR_DT_REQ; | |
2375 | if (period == 8) | |
2376 | ppr_options |= MSG_EXT_PPR_IU_REQ; | |
1da177e4 LT |
2377 | } |
2378 | ||
a4b53a11 HR |
2379 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
2380 | ||
73a25462 HR |
2381 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2382 | starget->channel + 'A', ROLE_INITIATOR); | |
1da177e4 | 2383 | |
73a25462 HR |
2384 | /* all PPR requests apart from QAS require wide transfers */ |
2385 | if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { | |
2386 | if (spi_width(starget) == 0) | |
2387 | ppr_options &= MSG_EXT_PPR_QAS_REQ; | |
1da177e4 | 2388 | } |
73a25462 | 2389 | |
a4b53a11 HR |
2390 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2391 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2392 | ||
73a25462 HR |
2393 | ahd_lock(ahd, &flags); |
2394 | ahd_set_syncrate(ahd, &devinfo, period, offset, | |
2395 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2396 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2397 | } |
2398 | ||
73a25462 | 2399 | static void ahd_linux_set_offset(struct scsi_target *starget, int offset) |
1da177e4 | 2400 | { |
73a25462 HR |
2401 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2402 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2403 | struct ahd_tmode_tstate *tstate; | |
2404 | struct ahd_initiator_tinfo *tinfo | |
2405 | = ahd_fetch_transinfo(ahd, | |
2406 | starget->channel + 'A', | |
2407 | shost->this_id, starget->id, &tstate); | |
2408 | struct ahd_devinfo devinfo; | |
2409 | unsigned int ppr_options = 0; | |
2410 | unsigned int period = 0; | |
a4b53a11 | 2411 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
73a25462 HR |
2412 | unsigned long flags; |
2413 | ||
a4b53a11 HR |
2414 | #ifdef AHD_DEBUG |
2415 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2416 | printf("%s: set offset to %d\n", ahd_name(ahd), offset); | |
2417 | #endif | |
2418 | ||
73a25462 HR |
2419 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2420 | starget->channel + 'A', ROLE_INITIATOR); | |
2421 | if (offset != 0) { | |
2422 | period = tinfo->goal.period; | |
2423 | ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 HR |
2424 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2425 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
1da177e4 | 2426 | } |
a4b53a11 | 2427 | |
73a25462 HR |
2428 | ahd_lock(ahd, &flags); |
2429 | ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, | |
2430 | AHD_TRANS_GOAL, FALSE); | |
2431 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2432 | } |
2433 | ||
73a25462 | 2434 | static void ahd_linux_set_dt(struct scsi_target *starget, int dt) |
1da177e4 | 2435 | { |
73a25462 HR |
2436 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2437 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2438 | struct ahd_tmode_tstate *tstate; | |
2439 | struct ahd_initiator_tinfo *tinfo | |
2440 | = ahd_fetch_transinfo(ahd, | |
2441 | starget->channel + 'A', | |
2442 | shost->this_id, starget->id, &tstate); | |
2443 | struct ahd_devinfo devinfo; | |
2444 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2445 | & ~MSG_EXT_PPR_DT_REQ; | |
2446 | unsigned int period = tinfo->goal.period; | |
52b5cfb3 | 2447 | unsigned int width = tinfo->goal.width; |
73a25462 HR |
2448 | unsigned long flags; |
2449 | ||
a4b53a11 HR |
2450 | #ifdef AHD_DEBUG |
2451 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2452 | printf("%s: %s DT\n", ahd_name(ahd), | |
2453 | dt ? "enabling" : "disabling"); | |
2454 | #endif | |
73a25462 HR |
2455 | if (dt) { |
2456 | ppr_options |= MSG_EXT_PPR_DT_REQ; | |
52b5cfb3 HR |
2457 | if (!width) |
2458 | ahd_linux_set_width(starget, 1); | |
a4b53a11 HR |
2459 | } else { |
2460 | if (period <= 9) | |
2461 | period = 10; /* If resetting DT, period must be >= 25ns */ | |
2462 | /* IU is invalid without DT set */ | |
2463 | ppr_options &= ~MSG_EXT_PPR_IU_REQ; | |
2464 | } | |
73a25462 HR |
2465 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2466 | starget->channel + 'A', ROLE_INITIATOR); | |
2467 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2468 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2469 | |
73a25462 HR |
2470 | ahd_lock(ahd, &flags); |
2471 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2472 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2473 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2474 | } |
2475 | ||
73a25462 | 2476 | static void ahd_linux_set_qas(struct scsi_target *starget, int qas) |
1da177e4 | 2477 | { |
73a25462 HR |
2478 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2479 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2480 | struct ahd_tmode_tstate *tstate; | |
2481 | struct ahd_initiator_tinfo *tinfo | |
2482 | = ahd_fetch_transinfo(ahd, | |
2483 | starget->channel + 'A', | |
2484 | shost->this_id, starget->id, &tstate); | |
2485 | struct ahd_devinfo devinfo; | |
2486 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2487 | & ~MSG_EXT_PPR_QAS_REQ; | |
2488 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2489 | unsigned int dt; |
73a25462 HR |
2490 | unsigned long flags; |
2491 | ||
a4b53a11 HR |
2492 | #ifdef AHD_DEBUG |
2493 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2494 | printf("%s: %s QAS\n", ahd_name(ahd), | |
2495 | qas ? "enabling" : "disabling"); | |
2496 | #endif | |
2497 | ||
2498 | if (qas) { | |
2499 | ppr_options |= MSG_EXT_PPR_QAS_REQ; | |
2500 | } | |
2501 | ||
2502 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2503 | |
2504 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2505 | starget->channel + 'A', ROLE_INITIATOR); | |
2506 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2507 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2508 | |
73a25462 HR |
2509 | ahd_lock(ahd, &flags); |
2510 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2511 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2512 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2513 | } |
2514 | ||
73a25462 | 2515 | static void ahd_linux_set_iu(struct scsi_target *starget, int iu) |
1da177e4 | 2516 | { |
73a25462 HR |
2517 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2518 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2519 | struct ahd_tmode_tstate *tstate; | |
2520 | struct ahd_initiator_tinfo *tinfo | |
2521 | = ahd_fetch_transinfo(ahd, | |
2522 | starget->channel + 'A', | |
2523 | shost->this_id, starget->id, &tstate); | |
2524 | struct ahd_devinfo devinfo; | |
2525 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2526 | & ~MSG_EXT_PPR_IU_REQ; | |
2527 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2528 | unsigned int dt; |
73a25462 HR |
2529 | unsigned long flags; |
2530 | ||
a4b53a11 HR |
2531 | #ifdef AHD_DEBUG |
2532 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2533 | printf("%s: %s IU\n", ahd_name(ahd), | |
2534 | iu ? "enabling" : "disabling"); | |
2535 | #endif | |
2536 | ||
2537 | if (iu) { | |
73a25462 | 2538 | ppr_options |= MSG_EXT_PPR_IU_REQ; |
a4b53a11 HR |
2539 | ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ |
2540 | } | |
2541 | ||
2542 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2543 | |
2544 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2545 | starget->channel + 'A', ROLE_INITIATOR); | |
2546 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2547 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2548 | |
73a25462 HR |
2549 | ahd_lock(ahd, &flags); |
2550 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2551 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2552 | ahd_unlock(ahd, &flags); | |
2553 | } | |
1da177e4 | 2554 | |
73a25462 HR |
2555 | static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) |
2556 | { | |
2557 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2558 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2559 | struct ahd_tmode_tstate *tstate; | |
2560 | struct ahd_initiator_tinfo *tinfo | |
2561 | = ahd_fetch_transinfo(ahd, | |
2562 | starget->channel + 'A', | |
2563 | shost->this_id, starget->id, &tstate); | |
2564 | struct ahd_devinfo devinfo; | |
2565 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2566 | & ~MSG_EXT_PPR_RD_STRM; | |
2567 | unsigned int period = tinfo->goal.period; | |
2568 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2569 | unsigned long flags; | |
2570 | ||
a4b53a11 HR |
2571 | #ifdef AHD_DEBUG |
2572 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2573 | printf("%s: %s Read Streaming\n", ahd_name(ahd), | |
2574 | rdstrm ? "enabling" : "disabling"); | |
2575 | #endif | |
2576 | ||
73a25462 HR |
2577 | if (rdstrm) |
2578 | ppr_options |= MSG_EXT_PPR_RD_STRM; | |
2579 | ||
2580 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2581 | starget->channel + 'A', ROLE_INITIATOR); | |
2582 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2583 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2584 | |
a4b53a11 HR |
2585 | ahd_lock(ahd, &flags); |
2586 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2587 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2588 | ahd_unlock(ahd, &flags); | |
2589 | } | |
2590 | ||
2591 | static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) | |
2592 | { | |
2593 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2594 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2595 | struct ahd_tmode_tstate *tstate; | |
2596 | struct ahd_initiator_tinfo *tinfo | |
2597 | = ahd_fetch_transinfo(ahd, | |
2598 | starget->channel + 'A', | |
2599 | shost->this_id, starget->id, &tstate); | |
2600 | struct ahd_devinfo devinfo; | |
2601 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2602 | & ~MSG_EXT_PPR_WR_FLOW; | |
2603 | unsigned int period = tinfo->goal.period; | |
2604 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2605 | unsigned long flags; | |
2606 | ||
2607 | #ifdef AHD_DEBUG | |
2608 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2609 | printf("%s: %s Write Flow Control\n", ahd_name(ahd), | |
2610 | wrflow ? "enabling" : "disabling"); | |
2611 | #endif | |
2612 | ||
2613 | if (wrflow) | |
2614 | ppr_options |= MSG_EXT_PPR_WR_FLOW; | |
2615 | ||
2616 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2617 | starget->channel + 'A', ROLE_INITIATOR); | |
2618 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2619 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2620 | ||
a4b53a11 HR |
2621 | ahd_lock(ahd, &flags); |
2622 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2623 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2624 | ahd_unlock(ahd, &flags); | |
2625 | } | |
2626 | ||
2627 | static void ahd_linux_set_rti(struct scsi_target *starget, int rti) | |
2628 | { | |
2629 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2630 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2631 | struct ahd_tmode_tstate *tstate; | |
2632 | struct ahd_initiator_tinfo *tinfo | |
2633 | = ahd_fetch_transinfo(ahd, | |
2634 | starget->channel + 'A', | |
2635 | shost->this_id, starget->id, &tstate); | |
2636 | struct ahd_devinfo devinfo; | |
2637 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2638 | & ~MSG_EXT_PPR_RTI; | |
2639 | unsigned int period = tinfo->goal.period; | |
2640 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2641 | unsigned long flags; | |
2642 | ||
2643 | if ((ahd->features & AHD_RTI) == 0) { | |
2644 | #ifdef AHD_DEBUG | |
2645 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2646 | printf("%s: RTI not available\n", ahd_name(ahd)); | |
2647 | #endif | |
2648 | return; | |
2649 | } | |
2650 | ||
2651 | #ifdef AHD_DEBUG | |
2652 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2653 | printf("%s: %s RTI\n", ahd_name(ahd), | |
2654 | rti ? "enabling" : "disabling"); | |
2655 | #endif | |
2656 | ||
2657 | if (rti) | |
2658 | ppr_options |= MSG_EXT_PPR_RTI; | |
2659 | ||
2660 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2661 | starget->channel + 'A', ROLE_INITIATOR); | |
2662 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2663 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2664 | ||
a4b53a11 HR |
2665 | ahd_lock(ahd, &flags); |
2666 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2667 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2668 | ahd_unlock(ahd, &flags); | |
2669 | } | |
2670 | ||
2671 | static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) | |
2672 | { | |
2673 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2674 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2675 | struct ahd_tmode_tstate *tstate; | |
2676 | struct ahd_initiator_tinfo *tinfo | |
2677 | = ahd_fetch_transinfo(ahd, | |
2678 | starget->channel + 'A', | |
2679 | shost->this_id, starget->id, &tstate); | |
2680 | struct ahd_devinfo devinfo; | |
2681 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2682 | & ~MSG_EXT_PPR_PCOMP_EN; | |
2683 | unsigned int period = tinfo->goal.period; | |
2684 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2685 | unsigned long flags; | |
2686 | ||
2687 | #ifdef AHD_DEBUG | |
2688 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2689 | printf("%s: %s Precompensation\n", ahd_name(ahd), | |
2690 | pcomp ? "Enable" : "Disable"); | |
2691 | #endif | |
2692 | ||
2693 | if (pcomp) | |
2694 | ppr_options |= MSG_EXT_PPR_PCOMP_EN; | |
2695 | ||
2696 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2697 | starget->channel + 'A', ROLE_INITIATOR); | |
2698 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2699 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2700 | ||
73a25462 HR |
2701 | ahd_lock(ahd, &flags); |
2702 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2703 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2704 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2705 | } |
2706 | ||
88ff29a4 JB |
2707 | static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) |
2708 | { | |
2709 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2710 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2711 | struct ahd_tmode_tstate *tstate; | |
2712 | struct ahd_initiator_tinfo *tinfo | |
2713 | = ahd_fetch_transinfo(ahd, | |
2714 | starget->channel + 'A', | |
2715 | shost->this_id, starget->id, &tstate); | |
2716 | struct ahd_devinfo devinfo; | |
2717 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2718 | & ~MSG_EXT_PPR_HOLD_MCS; | |
2719 | unsigned int period = tinfo->goal.period; | |
2720 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2721 | unsigned long flags; | |
2722 | ||
2723 | if (hold) | |
2724 | ppr_options |= MSG_EXT_PPR_HOLD_MCS; | |
2725 | ||
2726 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2727 | starget->channel + 'A', ROLE_INITIATOR); | |
2728 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2729 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2730 | ||
2731 | ahd_lock(ahd, &flags); | |
2732 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2733 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2734 | ahd_unlock(ahd, &flags); | |
2735 | } | |
2736 | ||
2737 | ||
2738 | ||
73a25462 HR |
2739 | static struct spi_function_template ahd_linux_transport_functions = { |
2740 | .set_offset = ahd_linux_set_offset, | |
2741 | .show_offset = 1, | |
2742 | .set_period = ahd_linux_set_period, | |
2743 | .show_period = 1, | |
2744 | .set_width = ahd_linux_set_width, | |
2745 | .show_width = 1, | |
2746 | .set_dt = ahd_linux_set_dt, | |
2747 | .show_dt = 1, | |
2748 | .set_iu = ahd_linux_set_iu, | |
2749 | .show_iu = 1, | |
2750 | .set_qas = ahd_linux_set_qas, | |
2751 | .show_qas = 1, | |
2752 | .set_rd_strm = ahd_linux_set_rd_strm, | |
2753 | .show_rd_strm = 1, | |
a4b53a11 HR |
2754 | .set_wr_flow = ahd_linux_set_wr_flow, |
2755 | .show_wr_flow = 1, | |
2756 | .set_rti = ahd_linux_set_rti, | |
2757 | .show_rti = 1, | |
2758 | .set_pcomp_en = ahd_linux_set_pcomp_en, | |
2759 | .show_pcomp_en = 1, | |
88ff29a4 JB |
2760 | .set_hold_mcs = ahd_linux_set_hold_mcs, |
2761 | .show_hold_mcs = 1, | |
73a25462 HR |
2762 | }; |
2763 | ||
1da177e4 LT |
2764 | static int __init |
2765 | ahd_linux_init(void) | |
2766 | { | |
85a46523 CH |
2767 | int error = 0; |
2768 | ||
2769 | /* | |
2770 | * If we've been passed any parameters, process them now. | |
2771 | */ | |
2772 | if (aic79xx) | |
2773 | aic79xx_setup(aic79xx); | |
2774 | ||
2775 | ahd_linux_transport_template = | |
2776 | spi_attach_transport(&ahd_linux_transport_functions); | |
73a25462 HR |
2777 | if (!ahd_linux_transport_template) |
2778 | return -ENODEV; | |
85a46523 | 2779 | |
73a25462 HR |
2780 | scsi_transport_reserve_target(ahd_linux_transport_template, |
2781 | sizeof(struct ahd_linux_target)); | |
2782 | scsi_transport_reserve_device(ahd_linux_transport_template, | |
2783 | sizeof(struct ahd_linux_device)); | |
a80b3424 | 2784 | |
85a46523 CH |
2785 | error = ahd_linux_pci_init(); |
2786 | if (error) | |
2787 | spi_release_transport(ahd_linux_transport_template); | |
2788 | return error; | |
1da177e4 LT |
2789 | } |
2790 | ||
2791 | static void __exit | |
2792 | ahd_linux_exit(void) | |
2793 | { | |
1da177e4 | 2794 | ahd_linux_pci_exit(); |
73a25462 | 2795 | spi_release_transport(ahd_linux_transport_template); |
1da177e4 LT |
2796 | } |
2797 | ||
2798 | module_init(ahd_linux_init); | |
2799 | module_exit(ahd_linux_exit); |