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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); |
73a25462 | 376 | static int ahd_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag); |
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; | |
651 | ||
652 | error = ahd_linux_queue_recovery_cmd(cmd, SCB_ABORT); | |
653 | if (error != 0) | |
654 | printf("aic79xx_abort returns 0x%x\n", error); | |
655 | return error; | |
656 | } | |
657 | ||
658 | /* | |
659 | * Attempt to send a target reset message to the device that timed out. | |
660 | */ | |
661 | static int | |
662 | ahd_linux_dev_reset(struct scsi_cmnd *cmd) | |
663 | { | |
664 | int error; | |
665 | ||
666 | error = ahd_linux_queue_recovery_cmd(cmd, SCB_DEVICE_RESET); | |
667 | if (error != 0) | |
668 | printf("aic79xx_dev_reset returns 0x%x\n", error); | |
669 | return error; | |
670 | } | |
671 | ||
672 | /* | |
673 | * Reset the SCSI bus. | |
674 | */ | |
675 | static int | |
676 | ahd_linux_bus_reset(struct scsi_cmnd *cmd) | |
1da177e4 LT |
677 | { |
678 | struct ahd_softc *ahd; | |
73a25462 | 679 | int found; |
1da177e4 | 680 | |
1da177e4 | 681 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; |
73a25462 HR |
682 | #ifdef AHD_DEBUG |
683 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) | |
684 | printf("%s: Bus reset called for cmd %p\n", | |
685 | ahd_name(ahd), cmd); | |
686 | #endif | |
422c0d61 | 687 | found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A', |
73a25462 | 688 | /*initiate reset*/TRUE); |
1da177e4 | 689 | |
73a25462 HR |
690 | if (bootverbose) |
691 | printf("%s: SCSI bus reset delivered. " | |
692 | "%d SCBs aborted.\n", ahd_name(ahd), found); | |
1da177e4 | 693 | |
73a25462 HR |
694 | return (SUCCESS); |
695 | } | |
1da177e4 | 696 | |
73a25462 HR |
697 | struct scsi_host_template aic79xx_driver_template = { |
698 | .module = THIS_MODULE, | |
699 | .name = "aic79xx", | |
85a46523 | 700 | .proc_name = "aic79xx", |
73a25462 HR |
701 | .proc_info = ahd_linux_proc_info, |
702 | .info = ahd_linux_info, | |
703 | .queuecommand = ahd_linux_queue, | |
704 | .eh_abort_handler = ahd_linux_abort, | |
705 | .eh_device_reset_handler = ahd_linux_dev_reset, | |
706 | .eh_bus_reset_handler = ahd_linux_bus_reset, | |
707 | #if defined(__i386__) | |
708 | .bios_param = ahd_linux_biosparam, | |
709 | #endif | |
710 | .can_queue = AHD_MAX_QUEUE, | |
711 | .this_id = -1, | |
712 | .cmd_per_lun = 2, | |
713 | .use_clustering = ENABLE_CLUSTERING, | |
714 | .slave_alloc = ahd_linux_slave_alloc, | |
715 | .slave_configure = ahd_linux_slave_configure, | |
716 | .slave_destroy = ahd_linux_slave_destroy, | |
717 | .target_alloc = ahd_linux_target_alloc, | |
718 | .target_destroy = ahd_linux_target_destroy, | |
719 | }; | |
1da177e4 | 720 | |
73a25462 HR |
721 | /******************************** Bus DMA *************************************/ |
722 | int | |
723 | ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent, | |
724 | bus_size_t alignment, bus_size_t boundary, | |
725 | dma_addr_t lowaddr, dma_addr_t highaddr, | |
726 | bus_dma_filter_t *filter, void *filterarg, | |
727 | bus_size_t maxsize, int nsegments, | |
728 | bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag) | |
729 | { | |
730 | bus_dma_tag_t dmat; | |
731 | ||
732 | dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT); | |
733 | if (dmat == NULL) | |
734 | return (ENOMEM); | |
1da177e4 | 735 | |
1da177e4 | 736 | /* |
73a25462 HR |
737 | * Linux is very simplistic about DMA memory. For now don't |
738 | * maintain all specification information. Once Linux supplies | |
739 | * better facilities for doing these operations, or the | |
740 | * needs of this particular driver change, we might need to do | |
741 | * more here. | |
1da177e4 | 742 | */ |
73a25462 HR |
743 | dmat->alignment = alignment; |
744 | dmat->boundary = boundary; | |
745 | dmat->maxsize = maxsize; | |
746 | *ret_tag = dmat; | |
747 | return (0); | |
748 | } | |
1da177e4 | 749 | |
73a25462 HR |
750 | void |
751 | ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat) | |
752 | { | |
753 | free(dmat, M_DEVBUF); | |
754 | } | |
1da177e4 | 755 | |
73a25462 HR |
756 | int |
757 | ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr, | |
758 | int flags, bus_dmamap_t *mapp) | |
759 | { | |
760 | *vaddr = pci_alloc_consistent(ahd->dev_softc, | |
761 | dmat->maxsize, mapp); | |
762 | if (*vaddr == NULL) | |
763 | return (ENOMEM); | |
764 | return(0); | |
765 | } | |
1da177e4 | 766 | |
73a25462 HR |
767 | void |
768 | ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat, | |
769 | void* vaddr, bus_dmamap_t map) | |
770 | { | |
771 | pci_free_consistent(ahd->dev_softc, dmat->maxsize, | |
772 | vaddr, map); | |
773 | } | |
774 | ||
775 | int | |
776 | ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map, | |
777 | void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb, | |
778 | void *cb_arg, int flags) | |
779 | { | |
1da177e4 | 780 | /* |
73a25462 HR |
781 | * Assume for now that this will only be used during |
782 | * initialization and not for per-transaction buffer mapping. | |
1da177e4 | 783 | */ |
73a25462 | 784 | bus_dma_segment_t stack_sg; |
1da177e4 | 785 | |
73a25462 HR |
786 | stack_sg.ds_addr = map; |
787 | stack_sg.ds_len = dmat->maxsize; | |
788 | cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); | |
789 | return (0); | |
790 | } | |
1da177e4 | 791 | |
73a25462 HR |
792 | void |
793 | ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
794 | { | |
795 | } | |
1da177e4 | 796 | |
73a25462 HR |
797 | int |
798 | ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
799 | { | |
800 | /* Nothing to do */ | |
801 | return (0); | |
802 | } | |
1da177e4 | 803 | |
73a25462 | 804 | /********************* Platform Dependent Functions ***************************/ |
73a25462 HR |
805 | static void |
806 | ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value) | |
807 | { | |
1da177e4 | 808 | |
73a25462 HR |
809 | if ((instance >= 0) |
810 | && (instance < NUM_ELEMENTS(aic79xx_iocell_info))) { | |
811 | uint8_t *iocell_info; | |
812 | ||
813 | iocell_info = (uint8_t*)&aic79xx_iocell_info[instance]; | |
814 | iocell_info[index] = value & 0xFFFF; | |
815 | if (bootverbose) | |
816 | printf("iocell[%d:%ld] = %d\n", instance, index, value); | |
1da177e4 | 817 | } |
73a25462 | 818 | } |
1da177e4 | 819 | |
73a25462 HR |
820 | static void |
821 | ahd_linux_setup_tag_info_global(char *p) | |
822 | { | |
823 | int tags, i, j; | |
1da177e4 | 824 | |
73a25462 HR |
825 | tags = simple_strtoul(p + 1, NULL, 0) & 0xff; |
826 | printf("Setting Global Tags= %d\n", tags); | |
827 | ||
828 | for (i = 0; i < NUM_ELEMENTS(aic79xx_tag_info); i++) { | |
829 | for (j = 0; j < AHD_NUM_TARGETS; j++) { | |
830 | aic79xx_tag_info[i].tag_commands[j] = tags; | |
1da177e4 | 831 | } |
1da177e4 | 832 | } |
1da177e4 LT |
833 | } |
834 | ||
1da177e4 | 835 | static void |
73a25462 | 836 | ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) |
1da177e4 | 837 | { |
1da177e4 | 838 | |
73a25462 HR |
839 | if ((instance >= 0) && (targ >= 0) |
840 | && (instance < NUM_ELEMENTS(aic79xx_tag_info)) | |
841 | && (targ < AHD_NUM_TARGETS)) { | |
842 | aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; | |
843 | if (bootverbose) | |
844 | printf("tag_info[%d:%d] = %d\n", instance, targ, value); | |
1da177e4 | 845 | } |
1da177e4 LT |
846 | } |
847 | ||
1ff92730 CH |
848 | static char * |
849 | ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth, | |
850 | void (*callback)(u_long, int, int, int32_t), | |
851 | u_long callback_arg) | |
852 | { | |
853 | char *tok_end; | |
854 | char *tok_end2; | |
855 | int i; | |
856 | int instance; | |
857 | int targ; | |
858 | int done; | |
859 | char tok_list[] = {'.', ',', '{', '}', '\0'}; | |
860 | ||
861 | /* All options use a ':' name/arg separator */ | |
862 | if (*opt_arg != ':') | |
863 | return (opt_arg); | |
864 | opt_arg++; | |
865 | instance = -1; | |
866 | targ = -1; | |
867 | done = FALSE; | |
868 | /* | |
869 | * Restore separator that may be in | |
870 | * the middle of our option argument. | |
871 | */ | |
872 | tok_end = strchr(opt_arg, '\0'); | |
873 | if (tok_end < end) | |
874 | *tok_end = ','; | |
875 | while (!done) { | |
876 | switch (*opt_arg) { | |
877 | case '{': | |
878 | if (instance == -1) { | |
879 | instance = 0; | |
880 | } else { | |
881 | if (depth > 1) { | |
882 | if (targ == -1) | |
883 | targ = 0; | |
884 | } else { | |
885 | printf("Malformed Option %s\n", | |
886 | opt_name); | |
887 | done = TRUE; | |
888 | } | |
889 | } | |
890 | opt_arg++; | |
891 | break; | |
892 | case '}': | |
893 | if (targ != -1) | |
894 | targ = -1; | |
895 | else if (instance != -1) | |
896 | instance = -1; | |
897 | opt_arg++; | |
898 | break; | |
899 | case ',': | |
900 | case '.': | |
901 | if (instance == -1) | |
902 | done = TRUE; | |
903 | else if (targ >= 0) | |
904 | targ++; | |
905 | else if (instance >= 0) | |
906 | instance++; | |
907 | opt_arg++; | |
908 | break; | |
909 | case '\0': | |
910 | done = TRUE; | |
911 | break; | |
912 | default: | |
913 | tok_end = end; | |
914 | for (i = 0; tok_list[i]; i++) { | |
915 | tok_end2 = strchr(opt_arg, tok_list[i]); | |
916 | if ((tok_end2) && (tok_end2 < tok_end)) | |
917 | tok_end = tok_end2; | |
918 | } | |
919 | callback(callback_arg, instance, targ, | |
920 | simple_strtol(opt_arg, NULL, 0)); | |
921 | opt_arg = tok_end; | |
922 | break; | |
923 | } | |
924 | } | |
925 | return (opt_arg); | |
926 | } | |
927 | ||
1da177e4 | 928 | /* |
73a25462 HR |
929 | * Handle Linux boot parameters. This routine allows for assigning a value |
930 | * to a parameter with a ':' between the parameter and the value. | |
931 | * ie. aic79xx=stpwlev:1,extended | |
1da177e4 LT |
932 | */ |
933 | static int | |
73a25462 | 934 | aic79xx_setup(char *s) |
1da177e4 | 935 | { |
73a25462 HR |
936 | int i, n; |
937 | char *p; | |
938 | char *end; | |
1da177e4 | 939 | |
73a25462 HR |
940 | static struct { |
941 | const char *name; | |
942 | uint32_t *flag; | |
943 | } options[] = { | |
944 | { "extended", &aic79xx_extended }, | |
945 | { "no_reset", &aic79xx_no_reset }, | |
946 | { "verbose", &aic79xx_verbose }, | |
947 | { "allow_memio", &aic79xx_allow_memio}, | |
1da177e4 | 948 | #ifdef AHD_DEBUG |
73a25462 | 949 | { "debug", &ahd_debug }, |
1da177e4 | 950 | #endif |
73a25462 HR |
951 | { "reverse_scan", &aic79xx_reverse_scan }, |
952 | { "periodic_otag", &aic79xx_periodic_otag }, | |
953 | { "pci_parity", &aic79xx_pci_parity }, | |
954 | { "seltime", &aic79xx_seltime }, | |
955 | { "tag_info", NULL }, | |
956 | { "global_tag_depth", NULL}, | |
957 | { "slewrate", NULL }, | |
958 | { "precomp", NULL }, | |
959 | { "amplitude", NULL }, | |
3fb08612 | 960 | { "slowcrc", &aic79xx_slowcrc }, |
73a25462 | 961 | }; |
1da177e4 | 962 | |
73a25462 | 963 | end = strchr(s, '\0'); |
1da177e4 | 964 | |
73a25462 HR |
965 | /* |
966 | * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS | |
967 | * will never be 0 in this case. | |
968 | */ | |
969 | n = 0; | |
970 | ||
971 | while ((p = strsep(&s, ",.")) != NULL) { | |
972 | if (*p == '\0') | |
973 | continue; | |
974 | for (i = 0; i < NUM_ELEMENTS(options); i++) { | |
975 | ||
976 | n = strlen(options[i].name); | |
977 | if (strncmp(options[i].name, p, n) == 0) | |
978 | break; | |
979 | } | |
980 | if (i == NUM_ELEMENTS(options)) | |
981 | continue; | |
982 | ||
983 | if (strncmp(p, "global_tag_depth", n) == 0) { | |
984 | ahd_linux_setup_tag_info_global(p + n); | |
985 | } else if (strncmp(p, "tag_info", n) == 0) { | |
1ff92730 | 986 | s = ahd_parse_brace_option("tag_info", p + n, end, |
73a25462 HR |
987 | 2, ahd_linux_setup_tag_info, 0); |
988 | } else if (strncmp(p, "slewrate", n) == 0) { | |
1ff92730 | 989 | s = ahd_parse_brace_option("slewrate", |
73a25462 HR |
990 | p + n, end, 1, ahd_linux_setup_iocell_info, |
991 | AIC79XX_SLEWRATE_INDEX); | |
992 | } else if (strncmp(p, "precomp", n) == 0) { | |
1ff92730 | 993 | s = ahd_parse_brace_option("precomp", |
73a25462 HR |
994 | p + n, end, 1, ahd_linux_setup_iocell_info, |
995 | AIC79XX_PRECOMP_INDEX); | |
996 | } else if (strncmp(p, "amplitude", n) == 0) { | |
1ff92730 | 997 | s = ahd_parse_brace_option("amplitude", |
73a25462 HR |
998 | p + n, end, 1, ahd_linux_setup_iocell_info, |
999 | AIC79XX_AMPLITUDE_INDEX); | |
1000 | } else if (p[n] == ':') { | |
1001 | *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); | |
1002 | } else if (!strncmp(p, "verbose", n)) { | |
1003 | *(options[i].flag) = 1; | |
1004 | } else { | |
1005 | *(options[i].flag) ^= 0xFFFFFFFF; | |
1006 | } | |
1007 | } | |
1008 | return 1; | |
1da177e4 LT |
1009 | } |
1010 | ||
73a25462 HR |
1011 | __setup("aic79xx=", aic79xx_setup); |
1012 | ||
1013 | uint32_t aic79xx_verbose; | |
1da177e4 | 1014 | |
1da177e4 | 1015 | int |
73a25462 | 1016 | ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template) |
1da177e4 | 1017 | { |
73a25462 HR |
1018 | char buf[80]; |
1019 | struct Scsi_Host *host; | |
1020 | char *new_name; | |
1021 | u_long s; | |
e7a1ca1d | 1022 | int retval; |
1da177e4 | 1023 | |
73a25462 HR |
1024 | template->name = ahd->description; |
1025 | host = scsi_host_alloc(template, sizeof(struct ahd_softc *)); | |
1026 | if (host == NULL) | |
1da177e4 LT |
1027 | return (ENOMEM); |
1028 | ||
73a25462 | 1029 | *((struct ahd_softc **)host->hostdata) = ahd; |
73a25462 HR |
1030 | ahd->platform_data->host = host; |
1031 | host->can_queue = AHD_MAX_QUEUE; | |
1032 | host->cmd_per_lun = 2; | |
1033 | host->sg_tablesize = AHD_NSEG; | |
1034 | host->this_id = ahd->our_id; | |
1035 | host->irq = ahd->platform_data->irq; | |
1036 | host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1037 | host->max_lun = AHD_NUM_LUNS; | |
1038 | host->max_channel = 0; | |
1039 | host->sg_tablesize = AHD_NSEG; | |
eb221849 | 1040 | ahd_lock(ahd, &s); |
85a46523 | 1041 | ahd_set_unit(ahd, ahd_linux_unit++); |
eb221849 | 1042 | ahd_unlock(ahd, &s); |
73a25462 HR |
1043 | sprintf(buf, "scsi%d", host->host_no); |
1044 | new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); | |
1045 | if (new_name != NULL) { | |
1046 | strcpy(new_name, buf); | |
1047 | ahd_set_name(ahd, new_name); | |
1048 | } | |
1049 | host->unique_id = ahd->unit; | |
1050 | ahd_linux_initialize_scsi_bus(ahd); | |
1051 | ahd_intr_enable(ahd, TRUE); | |
73a25462 HR |
1052 | |
1053 | host->transportt = ahd_linux_transport_template; | |
1054 | ||
e7a1ca1d JJ |
1055 | retval = scsi_add_host(host, &ahd->dev_softc->dev); |
1056 | if (retval) { | |
1057 | printk(KERN_WARNING "aic79xx: scsi_add_host failed\n"); | |
1058 | scsi_host_put(host); | |
1059 | return retval; | |
1060 | } | |
1061 | ||
73a25462 | 1062 | scsi_scan_host(host); |
e7a1ca1d | 1063 | return 0; |
1da177e4 LT |
1064 | } |
1065 | ||
73a25462 HR |
1066 | uint64_t |
1067 | ahd_linux_get_memsize(void) | |
1da177e4 | 1068 | { |
73a25462 HR |
1069 | struct sysinfo si; |
1070 | ||
1071 | si_meminfo(&si); | |
1072 | return ((uint64_t)si.totalram << PAGE_SHIFT); | |
1da177e4 LT |
1073 | } |
1074 | ||
73a25462 HR |
1075 | /* |
1076 | * Place the SCSI bus into a known state by either resetting it, | |
1077 | * or forcing transfer negotiations on the next command to any | |
1078 | * target. | |
1079 | */ | |
1080 | static void | |
1081 | ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd) | |
1da177e4 | 1082 | { |
73a25462 HR |
1083 | u_int target_id; |
1084 | u_int numtarg; | |
eb221849 | 1085 | unsigned long s; |
1da177e4 | 1086 | |
73a25462 HR |
1087 | target_id = 0; |
1088 | numtarg = 0; | |
1089 | ||
1090 | if (aic79xx_no_reset != 0) | |
1091 | ahd->flags &= ~AHD_RESET_BUS_A; | |
1092 | ||
1093 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) | |
1094 | ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE); | |
1095 | else | |
1096 | numtarg = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1da177e4 | 1097 | |
eb221849 HR |
1098 | ahd_lock(ahd, &s); |
1099 | ||
1da177e4 | 1100 | /* |
73a25462 HR |
1101 | * Force negotiation to async for all targets that |
1102 | * will not see an initial bus reset. | |
1da177e4 | 1103 | */ |
73a25462 HR |
1104 | for (; target_id < numtarg; target_id++) { |
1105 | struct ahd_devinfo devinfo; | |
1106 | struct ahd_initiator_tinfo *tinfo; | |
1107 | struct ahd_tmode_tstate *tstate; | |
1108 | ||
1109 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
1110 | target_id, &tstate); | |
1111 | ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, | |
1112 | CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); | |
1113 | ahd_update_neg_request(ahd, &devinfo, tstate, | |
1114 | tinfo, AHD_NEG_ALWAYS); | |
1115 | } | |
eb221849 | 1116 | ahd_unlock(ahd, &s); |
73a25462 HR |
1117 | /* Give the bus some time to recover */ |
1118 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) { | |
1119 | ahd_freeze_simq(ahd); | |
eb221849 HR |
1120 | msleep(AIC79XX_RESET_DELAY); |
1121 | ahd_release_simq(ahd); | |
73a25462 | 1122 | } |
1da177e4 LT |
1123 | } |
1124 | ||
1125 | int | |
73a25462 | 1126 | ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) |
1da177e4 | 1127 | { |
73a25462 HR |
1128 | ahd->platform_data = |
1129 | malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT); | |
1130 | if (ahd->platform_data == NULL) | |
1131 | return (ENOMEM); | |
1132 | memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); | |
1133 | ahd->platform_data->irq = AHD_LINUX_NOIRQ; | |
1134 | ahd_lockinit(ahd); | |
73a25462 | 1135 | ahd->seltime = (aic79xx_seltime & 0x3) << 4; |
1da177e4 LT |
1136 | return (0); |
1137 | } | |
1138 | ||
73a25462 HR |
1139 | void |
1140 | ahd_platform_free(struct ahd_softc *ahd) | |
1da177e4 | 1141 | { |
73a25462 HR |
1142 | struct scsi_target *starget; |
1143 | int i, j; | |
1da177e4 | 1144 | |
73a25462 | 1145 | if (ahd->platform_data != NULL) { |
73a25462 HR |
1146 | /* destroy all of the device and target objects */ |
1147 | for (i = 0; i < AHD_NUM_TARGETS; i++) { | |
1148 | starget = ahd->platform_data->starget[i]; | |
1149 | if (starget != NULL) { | |
1150 | for (j = 0; j < AHD_NUM_LUNS; j++) { | |
1151 | struct ahd_linux_target *targ = | |
1152 | scsi_transport_target_data(starget); | |
1153 | if (targ->sdev[j] == NULL) | |
1154 | continue; | |
1155 | targ->sdev[j] = NULL; | |
1156 | } | |
1157 | ahd->platform_data->starget[i] = NULL; | |
1158 | } | |
1159 | } | |
1da177e4 | 1160 | |
73a25462 HR |
1161 | if (ahd->platform_data->irq != AHD_LINUX_NOIRQ) |
1162 | free_irq(ahd->platform_data->irq, ahd); | |
1163 | if (ahd->tags[0] == BUS_SPACE_PIO | |
1164 | && ahd->bshs[0].ioport != 0) | |
1165 | release_region(ahd->bshs[0].ioport, 256); | |
1166 | if (ahd->tags[1] == BUS_SPACE_PIO | |
1167 | && ahd->bshs[1].ioport != 0) | |
1168 | release_region(ahd->bshs[1].ioport, 256); | |
1169 | if (ahd->tags[0] == BUS_SPACE_MEMIO | |
1170 | && ahd->bshs[0].maddr != NULL) { | |
1171 | iounmap(ahd->bshs[0].maddr); | |
1172 | release_mem_region(ahd->platform_data->mem_busaddr, | |
1173 | 0x1000); | |
1174 | } | |
97af50f6 JB |
1175 | if (ahd->platform_data->host) |
1176 | scsi_host_put(ahd->platform_data->host); | |
1177 | ||
73a25462 HR |
1178 | free(ahd->platform_data, M_DEVBUF); |
1179 | } | |
1da177e4 LT |
1180 | } |
1181 | ||
73a25462 HR |
1182 | void |
1183 | ahd_platform_init(struct ahd_softc *ahd) | |
1da177e4 | 1184 | { |
73a25462 HR |
1185 | /* |
1186 | * Lookup and commit any modified IO Cell options. | |
1187 | */ | |
1188 | if (ahd->unit < NUM_ELEMENTS(aic79xx_iocell_info)) { | |
1189 | struct ahd_linux_iocell_opts *iocell_opts; | |
1da177e4 | 1190 | |
73a25462 HR |
1191 | iocell_opts = &aic79xx_iocell_info[ahd->unit]; |
1192 | if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP) | |
1193 | AHD_SET_PRECOMP(ahd, iocell_opts->precomp); | |
1194 | if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE) | |
1195 | AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate); | |
1196 | if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE) | |
1197 | AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude); | |
1da177e4 | 1198 | } |
1da177e4 | 1199 | |
1da177e4 LT |
1200 | } |
1201 | ||
73a25462 HR |
1202 | void |
1203 | ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1204 | { |
73a25462 HR |
1205 | ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), |
1206 | SCB_GET_CHANNEL(ahd, scb), | |
1207 | SCB_GET_LUN(scb), SCB_LIST_NULL, | |
1208 | ROLE_UNKNOWN, CAM_REQUEUE_REQ); | |
1da177e4 LT |
1209 | } |
1210 | ||
73a25462 HR |
1211 | void |
1212 | ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo, | |
1213 | ahd_queue_alg alg) | |
1da177e4 | 1214 | { |
73a25462 HR |
1215 | struct scsi_target *starget; |
1216 | struct ahd_linux_target *targ; | |
1217 | struct ahd_linux_device *dev; | |
1218 | struct scsi_device *sdev; | |
1219 | int was_queuing; | |
1220 | int now_queuing; | |
1da177e4 | 1221 | |
73a25462 HR |
1222 | starget = ahd->platform_data->starget[devinfo->target]; |
1223 | targ = scsi_transport_target_data(starget); | |
1224 | BUG_ON(targ == NULL); | |
1225 | sdev = targ->sdev[devinfo->lun]; | |
1226 | if (sdev == NULL) | |
1227 | return; | |
1da177e4 | 1228 | |
73a25462 | 1229 | dev = scsi_transport_device_data(sdev); |
1da177e4 | 1230 | |
73a25462 HR |
1231 | if (dev == NULL) |
1232 | return; | |
1233 | was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); | |
1234 | switch (alg) { | |
1235 | default: | |
1236 | case AHD_QUEUE_NONE: | |
1237 | now_queuing = 0; | |
1238 | break; | |
1239 | case AHD_QUEUE_BASIC: | |
1240 | now_queuing = AHD_DEV_Q_BASIC; | |
1241 | break; | |
1242 | case AHD_QUEUE_TAGGED: | |
1243 | now_queuing = AHD_DEV_Q_TAGGED; | |
1244 | break; | |
1245 | } | |
1246 | if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0 | |
1247 | && (was_queuing != now_queuing) | |
1248 | && (dev->active != 0)) { | |
1249 | dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY; | |
1250 | dev->qfrozen++; | |
1da177e4 | 1251 | } |
1da177e4 | 1252 | |
73a25462 HR |
1253 | dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG); |
1254 | if (now_queuing) { | |
1255 | u_int usertags; | |
1da177e4 | 1256 | |
73a25462 HR |
1257 | usertags = ahd_linux_user_tagdepth(ahd, devinfo); |
1258 | if (!was_queuing) { | |
1259 | /* | |
1260 | * Start out agressively and allow our | |
1261 | * dynamic queue depth algorithm to take | |
1262 | * care of the rest. | |
1263 | */ | |
1264 | dev->maxtags = usertags; | |
1265 | dev->openings = dev->maxtags - dev->active; | |
1da177e4 | 1266 | } |
73a25462 HR |
1267 | if (dev->maxtags == 0) { |
1268 | /* | |
1269 | * Queueing is disabled by the user. | |
1270 | */ | |
1271 | dev->openings = 1; | |
1272 | } else if (alg == AHD_QUEUE_TAGGED) { | |
1273 | dev->flags |= AHD_DEV_Q_TAGGED; | |
1274 | if (aic79xx_periodic_otag != 0) | |
1275 | dev->flags |= AHD_DEV_PERIODIC_OTAG; | |
1276 | } else | |
1277 | dev->flags |= AHD_DEV_Q_BASIC; | |
1278 | } else { | |
1279 | /* We can only have one opening. */ | |
1280 | dev->maxtags = 0; | |
1281 | dev->openings = 1 - dev->active; | |
1da177e4 | 1282 | } |
1da177e4 | 1283 | |
73a25462 HR |
1284 | switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { |
1285 | case AHD_DEV_Q_BASIC: | |
0aa800db HR |
1286 | scsi_set_tag_type(sdev, MSG_SIMPLE_TASK); |
1287 | scsi_activate_tcq(sdev, dev->openings + dev->active); | |
73a25462 HR |
1288 | break; |
1289 | case AHD_DEV_Q_TAGGED: | |
0aa800db HR |
1290 | scsi_set_tag_type(sdev, MSG_ORDERED_TASK); |
1291 | scsi_activate_tcq(sdev, dev->openings + dev->active); | |
73a25462 HR |
1292 | break; |
1293 | default: | |
1da177e4 | 1294 | /* |
73a25462 HR |
1295 | * We allow the OS to queue 2 untagged transactions to |
1296 | * us at any time even though we can only execute them | |
1297 | * serially on the controller/device. This should | |
1298 | * remove some latency. | |
1da177e4 | 1299 | */ |
0aa800db | 1300 | scsi_deactivate_tcq(sdev, 1); |
73a25462 | 1301 | break; |
1da177e4 | 1302 | } |
1da177e4 LT |
1303 | } |
1304 | ||
73a25462 HR |
1305 | int |
1306 | ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, | |
1307 | int lun, u_int tag, role_t role, uint32_t status) | |
1da177e4 | 1308 | { |
73a25462 | 1309 | return 0; |
1da177e4 LT |
1310 | } |
1311 | ||
73a25462 HR |
1312 | static u_int |
1313 | ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) | |
1da177e4 | 1314 | { |
73a25462 HR |
1315 | static int warned_user; |
1316 | u_int tags; | |
1da177e4 | 1317 | |
73a25462 HR |
1318 | tags = 0; |
1319 | if ((ahd->user_discenable & devinfo->target_mask) != 0) { | |
1320 | if (ahd->unit >= NUM_ELEMENTS(aic79xx_tag_info)) { | |
1321 | ||
1322 | if (warned_user == 0) { | |
1323 | printf(KERN_WARNING | |
1324 | "aic79xx: WARNING: Insufficient tag_info instances\n" | |
1325 | "aic79xx: for installed controllers. Using defaults\n" | |
1326 | "aic79xx: Please update the aic79xx_tag_info array in\n" | |
1327 | "aic79xx: the aic79xx_osm.c source file.\n"); | |
1328 | warned_user++; | |
1329 | } | |
1330 | tags = AHD_MAX_QUEUE; | |
1331 | } else { | |
1332 | adapter_tag_info_t *tag_info; | |
1333 | ||
1334 | tag_info = &aic79xx_tag_info[ahd->unit]; | |
1335 | tags = tag_info->tag_commands[devinfo->target_offset]; | |
1336 | if (tags > AHD_MAX_QUEUE) | |
1337 | tags = AHD_MAX_QUEUE; | |
1da177e4 LT |
1338 | } |
1339 | } | |
73a25462 | 1340 | return (tags); |
1da177e4 LT |
1341 | } |
1342 | ||
1343 | /* | |
73a25462 | 1344 | * Determines the queue depth for a given device. |
1da177e4 LT |
1345 | */ |
1346 | static void | |
73a25462 | 1347 | ahd_linux_device_queue_depth(struct scsi_device *sdev) |
1da177e4 | 1348 | { |
73a25462 HR |
1349 | struct ahd_devinfo devinfo; |
1350 | u_int tags; | |
1351 | struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
1da177e4 | 1352 | |
73a25462 HR |
1353 | ahd_compile_devinfo(&devinfo, |
1354 | ahd->our_id, | |
1355 | sdev->sdev_target->id, sdev->lun, | |
1356 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1357 | ROLE_INITIATOR); | |
1358 | tags = ahd_linux_user_tagdepth(ahd, &devinfo); | |
1359 | if (tags != 0 && sdev->tagged_supported != 0) { | |
1da177e4 | 1360 | |
73a25462 HR |
1361 | ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED); |
1362 | ahd_print_devinfo(ahd, &devinfo); | |
1363 | printf("Tagged Queuing enabled. Depth %d\n", tags); | |
1364 | } else { | |
1365 | ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE); | |
1366 | } | |
1367 | } | |
1da177e4 | 1368 | |
73a25462 HR |
1369 | static int |
1370 | ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, | |
1371 | struct scsi_cmnd *cmd) | |
1372 | { | |
1373 | struct scb *scb; | |
1374 | struct hardware_scb *hscb; | |
1375 | struct ahd_initiator_tinfo *tinfo; | |
1376 | struct ahd_tmode_tstate *tstate; | |
1377 | u_int col_idx; | |
1378 | uint16_t mask; | |
7b22da38 HR |
1379 | unsigned long flags; |
1380 | ||
1381 | ahd_lock(ahd, &flags); | |
1da177e4 LT |
1382 | |
1383 | /* | |
73a25462 | 1384 | * Get an scb to use. |
1da177e4 | 1385 | */ |
73a25462 HR |
1386 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
1387 | cmd->device->id, &tstate); | |
1388 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 | |
1389 | || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { | |
1390 | col_idx = AHD_NEVER_COL_IDX; | |
1391 | } else { | |
1392 | col_idx = AHD_BUILD_COL_IDX(cmd->device->id, | |
1393 | cmd->device->lun); | |
1394 | } | |
1395 | if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { | |
1396 | ahd->flags |= AHD_RESOURCE_SHORTAGE; | |
7b22da38 | 1397 | ahd_unlock(ahd, &flags); |
73a25462 | 1398 | return SCSI_MLQUEUE_HOST_BUSY; |
1da177e4 | 1399 | } |
1da177e4 | 1400 | |
73a25462 HR |
1401 | scb->io_ctx = cmd; |
1402 | scb->platform_data->dev = dev; | |
1403 | hscb = scb->hscb; | |
1404 | cmd->host_scribble = (char *)scb; | |
1da177e4 | 1405 | |
73a25462 HR |
1406 | /* |
1407 | * Fill out basics of the HSCB. | |
1408 | */ | |
1409 | hscb->control = 0; | |
1410 | hscb->scsiid = BUILD_SCSIID(ahd, cmd); | |
1411 | hscb->lun = cmd->device->lun; | |
1412 | scb->hscb->task_management = 0; | |
1413 | mask = SCB_GET_TARGET_MASK(ahd, scb); | |
1da177e4 | 1414 | |
73a25462 HR |
1415 | if ((ahd->user_discenable & mask) != 0) |
1416 | hscb->control |= DISCENB; | |
1da177e4 | 1417 | |
73a25462 HR |
1418 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) |
1419 | scb->flags |= SCB_PACKETIZED; | |
1da177e4 | 1420 | |
73a25462 HR |
1421 | if ((tstate->auto_negotiate & mask) != 0) { |
1422 | scb->flags |= SCB_AUTO_NEGOTIATE; | |
1423 | scb->hscb->control |= MK_MESSAGE; | |
11668bb6 HR |
1424 | } else if (cmd->cmnd[0] == INQUIRY |
1425 | && (tinfo->curr.offset != 0 | |
1426 | || tinfo->curr.width != MSG_EXT_WDTR_BUS_8_BIT | |
1427 | || tinfo->curr.ppr_options != 0) | |
1428 | && (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ)==0) { | |
1429 | /* | |
1430 | * The SCSI spec requires inquiry | |
1431 | * commands to complete without | |
1432 | * reporting unit attention conditions. | |
1433 | * Because of this, an inquiry command | |
1434 | * that occurs just after a device is | |
1435 | * reset will result in a data phase | |
1436 | * with mismatched negotiated rates. | |
1437 | * The core already forces a renegotiation | |
1438 | * for reset events that are visible to | |
1439 | * our controller or that we initiate, | |
1440 | * but a third party device reset or a | |
1441 | * hot-plug insertion can still cause this | |
1442 | * issue. Therefore, we force a re-negotiation | |
1443 | * for every inquiry command unless we | |
1444 | * are async. | |
1445 | */ | |
1446 | scb->flags |= SCB_NEGOTIATE; | |
1447 | scb->hscb->control |= MK_MESSAGE; | |
73a25462 HR |
1448 | } |
1449 | ||
1450 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { | |
1451 | int msg_bytes; | |
1452 | uint8_t tag_msgs[2]; | |
1453 | ||
1454 | msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); | |
1455 | if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { | |
1456 | hscb->control |= tag_msgs[0]; | |
1457 | if (tag_msgs[0] == MSG_ORDERED_TASK) | |
1458 | dev->commands_since_idle_or_otag = 0; | |
1459 | } else | |
1460 | if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH | |
1461 | && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { | |
1462 | hscb->control |= MSG_ORDERED_TASK; | |
1463 | dev->commands_since_idle_or_otag = 0; | |
1464 | } else { | |
1465 | hscb->control |= MSG_SIMPLE_TASK; | |
1da177e4 | 1466 | } |
73a25462 | 1467 | } |
1da177e4 | 1468 | |
73a25462 HR |
1469 | hscb->cdb_len = cmd->cmd_len; |
1470 | memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); | |
1471 | ||
1472 | scb->platform_data->xfer_len = 0; | |
1473 | ahd_set_residual(scb, 0); | |
1474 | ahd_set_sense_residual(scb, 0); | |
1475 | scb->sg_count = 0; | |
1476 | if (cmd->use_sg != 0) { | |
1477 | void *sg; | |
1478 | struct scatterlist *cur_seg; | |
1479 | u_int nseg; | |
1480 | int dir; | |
1481 | ||
1482 | cur_seg = (struct scatterlist *)cmd->request_buffer; | |
1483 | dir = cmd->sc_data_direction; | |
1484 | nseg = pci_map_sg(ahd->dev_softc, cur_seg, | |
1485 | cmd->use_sg, dir); | |
1486 | scb->platform_data->xfer_len = 0; | |
1487 | for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) { | |
1488 | dma_addr_t addr; | |
1489 | bus_size_t len; | |
1490 | ||
1491 | addr = sg_dma_address(cur_seg); | |
1492 | len = sg_dma_len(cur_seg); | |
1493 | scb->platform_data->xfer_len += len; | |
1494 | sg = ahd_sg_setup(ahd, scb, sg, addr, len, | |
1495 | /*last*/nseg == 1); | |
1da177e4 | 1496 | } |
73a25462 HR |
1497 | } else if (cmd->request_bufflen != 0) { |
1498 | void *sg; | |
1499 | dma_addr_t addr; | |
1500 | int dir; | |
1501 | ||
1502 | sg = scb->sg_list; | |
1503 | dir = cmd->sc_data_direction; | |
1504 | addr = pci_map_single(ahd->dev_softc, | |
1505 | cmd->request_buffer, | |
1506 | cmd->request_bufflen, dir); | |
1507 | scb->platform_data->xfer_len = cmd->request_bufflen; | |
1508 | scb->platform_data->buf_busaddr = addr; | |
1509 | sg = ahd_sg_setup(ahd, scb, sg, addr, | |
1510 | cmd->request_bufflen, /*last*/TRUE); | |
1da177e4 | 1511 | } |
73a25462 HR |
1512 | |
1513 | LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); | |
1514 | dev->openings--; | |
1515 | dev->active++; | |
1516 | dev->commands_issued++; | |
1517 | ||
1518 | if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) | |
1519 | dev->commands_since_idle_or_otag++; | |
1520 | scb->flags |= SCB_ACTIVE; | |
1521 | ahd_queue_scb(ahd, scb); | |
1522 | ||
7b22da38 HR |
1523 | ahd_unlock(ahd, &flags); |
1524 | ||
73a25462 | 1525 | return 0; |
1da177e4 LT |
1526 | } |
1527 | ||
73a25462 HR |
1528 | /* |
1529 | * SCSI controller interrupt handler. | |
1530 | */ | |
1531 | irqreturn_t | |
1532 | ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs) | |
1da177e4 | 1533 | { |
73a25462 HR |
1534 | struct ahd_softc *ahd; |
1535 | u_long flags; | |
1536 | int ours; | |
1da177e4 | 1537 | |
73a25462 HR |
1538 | ahd = (struct ahd_softc *) dev_id; |
1539 | ahd_lock(ahd, &flags); | |
1540 | ours = ahd_intr(ahd); | |
1541 | ahd_unlock(ahd, &flags); | |
1542 | return IRQ_RETVAL(ours); | |
1da177e4 LT |
1543 | } |
1544 | ||
1da177e4 | 1545 | void |
73a25462 HR |
1546 | ahd_send_async(struct ahd_softc *ahd, char channel, |
1547 | u_int target, u_int lun, ac_code code, void *arg) | |
1da177e4 | 1548 | { |
73a25462 HR |
1549 | switch (code) { |
1550 | case AC_TRANSFER_NEG: | |
1551 | { | |
1552 | char buf[80]; | |
1553 | struct scsi_target *starget; | |
73a25462 HR |
1554 | struct info_str info; |
1555 | struct ahd_initiator_tinfo *tinfo; | |
1556 | struct ahd_tmode_tstate *tstate; | |
1557 | unsigned int target_ppr_options; | |
1da177e4 | 1558 | |
73a25462 HR |
1559 | BUG_ON(target == CAM_TARGET_WILDCARD); |
1560 | ||
1561 | info.buffer = buf; | |
1562 | info.length = sizeof(buf); | |
1563 | info.offset = 0; | |
1564 | info.pos = 0; | |
1565 | tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, | |
1566 | target, &tstate); | |
1567 | ||
1568 | /* | |
1569 | * Don't bother reporting results while | |
1570 | * negotiations are still pending. | |
1571 | */ | |
1572 | if (tinfo->curr.period != tinfo->goal.period | |
1573 | || tinfo->curr.width != tinfo->goal.width | |
1574 | || tinfo->curr.offset != tinfo->goal.offset | |
1575 | || tinfo->curr.ppr_options != tinfo->goal.ppr_options) | |
1576 | if (bootverbose == 0) | |
1577 | break; | |
1578 | ||
1579 | /* | |
1580 | * Don't bother reporting results that | |
1581 | * are identical to those last reported. | |
1582 | */ | |
1583 | starget = ahd->platform_data->starget[target]; | |
fc789a93 | 1584 | if (starget == NULL) |
73a25462 HR |
1585 | break; |
1586 | ||
1587 | target_ppr_options = | |
1588 | (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) | |
1589 | + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) | |
3f40d7d6 JB |
1590 | + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) |
1591 | + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) | |
1592 | + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) | |
1593 | + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) | |
88ff29a4 JB |
1594 | + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) |
1595 | + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); | |
73a25462 HR |
1596 | |
1597 | if (tinfo->curr.period == spi_period(starget) | |
1598 | && tinfo->curr.width == spi_width(starget) | |
1599 | && tinfo->curr.offset == spi_offset(starget) | |
1600 | && tinfo->curr.ppr_options == target_ppr_options) | |
1601 | if (bootverbose == 0) | |
1602 | break; | |
1603 | ||
1604 | spi_period(starget) = tinfo->curr.period; | |
1605 | spi_width(starget) = tinfo->curr.width; | |
1606 | spi_offset(starget) = tinfo->curr.offset; | |
a4b53a11 HR |
1607 | spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; |
1608 | spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; | |
1609 | spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; | |
3f40d7d6 JB |
1610 | spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; |
1611 | spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; | |
1612 | spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; | |
1613 | spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; | |
88ff29a4 | 1614 | spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; |
73a25462 | 1615 | spi_display_xfer_agreement(starget); |
1da177e4 | 1616 | break; |
73a25462 HR |
1617 | } |
1618 | case AC_SENT_BDR: | |
1619 | { | |
1620 | WARN_ON(lun != CAM_LUN_WILDCARD); | |
1621 | scsi_report_device_reset(ahd->platform_data->host, | |
1622 | channel - 'A', target); | |
1da177e4 LT |
1623 | break; |
1624 | } | |
73a25462 HR |
1625 | case AC_BUS_RESET: |
1626 | if (ahd->platform_data->host != NULL) { | |
1627 | scsi_report_bus_reset(ahd->platform_data->host, | |
1628 | channel - 'A'); | |
1da177e4 | 1629 | } |
73a25462 HR |
1630 | break; |
1631 | default: | |
1632 | panic("ahd_send_async: Unexpected async event"); | |
1633 | } | |
1da177e4 LT |
1634 | } |
1635 | ||
73a25462 HR |
1636 | /* |
1637 | * Calls the higher level scsi done function and frees the scb. | |
1638 | */ | |
1639 | void | |
1640 | ahd_done(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1641 | { |
73a25462 HR |
1642 | struct scsi_cmnd *cmd; |
1643 | struct ahd_linux_device *dev; | |
1da177e4 | 1644 | |
73a25462 HR |
1645 | if ((scb->flags & SCB_ACTIVE) == 0) { |
1646 | printf("SCB %d done'd twice\n", SCB_GET_TAG(scb)); | |
1647 | ahd_dump_card_state(ahd); | |
1648 | panic("Stopping for safety"); | |
1da177e4 | 1649 | } |
73a25462 HR |
1650 | LIST_REMOVE(scb, pending_links); |
1651 | cmd = scb->io_ctx; | |
1652 | dev = scb->platform_data->dev; | |
1653 | dev->active--; | |
1654 | dev->openings++; | |
1655 | if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) { | |
1656 | cmd->result &= ~(CAM_DEV_QFRZN << 16); | |
1657 | dev->qfrozen--; | |
1658 | } | |
1659 | ahd_linux_unmap_scb(ahd, scb); | |
1da177e4 LT |
1660 | |
1661 | /* | |
73a25462 HR |
1662 | * Guard against stale sense data. |
1663 | * The Linux mid-layer assumes that sense | |
1664 | * was retrieved anytime the first byte of | |
1665 | * the sense buffer looks "sane". | |
1da177e4 | 1666 | */ |
73a25462 HR |
1667 | cmd->sense_buffer[0] = 0; |
1668 | if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) { | |
1669 | uint32_t amount_xferred; | |
1da177e4 | 1670 | |
73a25462 HR |
1671 | amount_xferred = |
1672 | ahd_get_transfer_length(scb) - ahd_get_residual(scb); | |
1673 | if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) { | |
1da177e4 | 1674 | #ifdef AHD_DEBUG |
73a25462 HR |
1675 | if ((ahd_debug & AHD_SHOW_MISC) != 0) { |
1676 | ahd_print_path(ahd, scb); | |
1677 | printf("Set CAM_UNCOR_PARITY\n"); | |
1678 | } | |
1da177e4 | 1679 | #endif |
73a25462 HR |
1680 | ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); |
1681 | #ifdef AHD_REPORT_UNDERFLOWS | |
1da177e4 | 1682 | /* |
73a25462 HR |
1683 | * This code is disabled by default as some |
1684 | * clients of the SCSI system do not properly | |
1685 | * initialize the underflow parameter. This | |
1686 | * results in spurious termination of commands | |
1687 | * that complete as expected (e.g. underflow is | |
1688 | * allowed as command can return variable amounts | |
1689 | * of data. | |
1da177e4 | 1690 | */ |
73a25462 HR |
1691 | } else if (amount_xferred < scb->io_ctx->underflow) { |
1692 | u_int i; | |
1da177e4 | 1693 | |
73a25462 HR |
1694 | ahd_print_path(ahd, scb); |
1695 | printf("CDB:"); | |
1696 | for (i = 0; i < scb->io_ctx->cmd_len; i++) | |
1697 | printf(" 0x%x", scb->io_ctx->cmnd[i]); | |
1698 | printf("\n"); | |
1699 | ahd_print_path(ahd, scb); | |
1700 | printf("Saw underflow (%ld of %ld bytes). " | |
1701 | "Treated as error\n", | |
1702 | ahd_get_residual(scb), | |
1703 | ahd_get_transfer_length(scb)); | |
1704 | ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); | |
1705 | #endif | |
1706 | } else { | |
1707 | ahd_set_transaction_status(scb, CAM_REQ_CMP); | |
1da177e4 | 1708 | } |
73a25462 HR |
1709 | } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { |
1710 | ahd_linux_handle_scsi_status(ahd, cmd->device, scb); | |
1711 | } | |
1da177e4 | 1712 | |
73a25462 HR |
1713 | if (dev->openings == 1 |
1714 | && ahd_get_transaction_status(scb) == CAM_REQ_CMP | |
1715 | && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL) | |
1716 | dev->tag_success_count++; | |
1717 | /* | |
1718 | * Some devices deal with temporary internal resource | |
1719 | * shortages by returning queue full. When the queue | |
1720 | * full occurrs, we throttle back. Slowly try to get | |
1721 | * back to our previous queue depth. | |
1722 | */ | |
1723 | if ((dev->openings + dev->active) < dev->maxtags | |
1724 | && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) { | |
1725 | dev->tag_success_count = 0; | |
1726 | dev->openings++; | |
1727 | } | |
1da177e4 | 1728 | |
73a25462 HR |
1729 | if (dev->active == 0) |
1730 | dev->commands_since_idle_or_otag = 0; | |
1da177e4 | 1731 | |
73a25462 HR |
1732 | if ((scb->flags & SCB_RECOVERY_SCB) != 0) { |
1733 | printf("Recovery SCB completes\n"); | |
1734 | if (ahd_get_transaction_status(scb) == CAM_BDR_SENT | |
1735 | || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) | |
1736 | ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); | |
7b22da38 HR |
1737 | |
1738 | if (ahd->platform_data->eh_done) | |
1739 | complete(ahd->platform_data->eh_done); | |
1da177e4 | 1740 | } |
73a25462 HR |
1741 | |
1742 | ahd_free_scb(ahd, scb); | |
1743 | ahd_linux_queue_cmd_complete(ahd, cmd); | |
1da177e4 LT |
1744 | } |
1745 | ||
1746 | static void | |
73a25462 HR |
1747 | ahd_linux_handle_scsi_status(struct ahd_softc *ahd, |
1748 | struct scsi_device *sdev, struct scb *scb) | |
1da177e4 | 1749 | { |
73a25462 HR |
1750 | struct ahd_devinfo devinfo; |
1751 | struct ahd_linux_device *dev = scsi_transport_device_data(sdev); | |
1da177e4 | 1752 | |
73a25462 HR |
1753 | ahd_compile_devinfo(&devinfo, |
1754 | ahd->our_id, | |
1755 | sdev->sdev_target->id, sdev->lun, | |
1756 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1757 | ROLE_INITIATOR); | |
1758 | ||
1759 | /* | |
1760 | * We don't currently trust the mid-layer to | |
1761 | * properly deal with queue full or busy. So, | |
1762 | * when one occurs, we tell the mid-layer to | |
1763 | * unconditionally requeue the command to us | |
1764 | * so that we can retry it ourselves. We also | |
1765 | * implement our own throttling mechanism so | |
1766 | * we don't clobber the device with too many | |
1767 | * commands. | |
1768 | */ | |
1769 | switch (ahd_get_scsi_status(scb)) { | |
1770 | default: | |
1771 | break; | |
1772 | case SCSI_STATUS_CHECK_COND: | |
1773 | case SCSI_STATUS_CMD_TERMINATED: | |
1774 | { | |
1775 | struct scsi_cmnd *cmd; | |
1da177e4 LT |
1776 | |
1777 | /* | |
73a25462 HR |
1778 | * Copy sense information to the OS's cmd |
1779 | * structure if it is available. | |
1da177e4 | 1780 | */ |
73a25462 HR |
1781 | cmd = scb->io_ctx; |
1782 | if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) { | |
1783 | struct scsi_status_iu_header *siu; | |
1784 | u_int sense_size; | |
1785 | u_int sense_offset; | |
1da177e4 | 1786 | |
73a25462 HR |
1787 | if (scb->flags & SCB_SENSE) { |
1788 | sense_size = MIN(sizeof(struct scsi_sense_data) | |
1789 | - ahd_get_sense_residual(scb), | |
1790 | sizeof(cmd->sense_buffer)); | |
1791 | sense_offset = 0; | |
1792 | } else { | |
1793 | /* | |
1794 | * Copy only the sense data into the provided | |
1795 | * buffer. | |
1796 | */ | |
1797 | siu = (struct scsi_status_iu_header *) | |
1798 | scb->sense_data; | |
1799 | sense_size = MIN(scsi_4btoul(siu->sense_length), | |
1800 | sizeof(cmd->sense_buffer)); | |
1801 | sense_offset = SIU_SENSE_OFFSET(siu); | |
1802 | } | |
1da177e4 | 1803 | |
73a25462 HR |
1804 | memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); |
1805 | memcpy(cmd->sense_buffer, | |
1806 | ahd_get_sense_buf(ahd, scb) | |
1807 | + sense_offset, sense_size); | |
1808 | cmd->result |= (DRIVER_SENSE << 24); | |
1da177e4 | 1809 | |
1da177e4 | 1810 | #ifdef AHD_DEBUG |
73a25462 HR |
1811 | if (ahd_debug & AHD_SHOW_SENSE) { |
1812 | int i; | |
1da177e4 | 1813 | |
73a25462 HR |
1814 | printf("Copied %d bytes of sense data at %d:", |
1815 | sense_size, sense_offset); | |
1816 | for (i = 0; i < sense_size; i++) { | |
1da177e4 | 1817 | if ((i & 0xF) == 0) |
73a25462 HR |
1818 | printf("\n"); |
1819 | printf("0x%x ", cmd->sense_buffer[i]); | |
1da177e4 LT |
1820 | } |
1821 | printf("\n"); | |
1822 | } | |
1823 | #endif | |
1da177e4 LT |
1824 | } |
1825 | break; | |
73a25462 HR |
1826 | } |
1827 | case SCSI_STATUS_QUEUE_FULL: | |
1828 | /* | |
1829 | * By the time the core driver has returned this | |
1830 | * command, all other commands that were queued | |
1831 | * to us but not the device have been returned. | |
1832 | * This ensures that dev->active is equal to | |
1833 | * the number of commands actually queued to | |
1834 | * the device. | |
1835 | */ | |
1836 | dev->tag_success_count = 0; | |
1837 | if (dev->active != 0) { | |
1da177e4 | 1838 | /* |
73a25462 HR |
1839 | * Drop our opening count to the number |
1840 | * of commands currently outstanding. | |
1da177e4 | 1841 | */ |
73a25462 | 1842 | dev->openings = 0; |
1da177e4 | 1843 | #ifdef AHD_DEBUG |
73a25462 HR |
1844 | if ((ahd_debug & AHD_SHOW_QFULL) != 0) { |
1845 | ahd_print_path(ahd, scb); | |
1846 | printf("Dropping tag count to %d\n", | |
1847 | dev->active); | |
1da177e4 LT |
1848 | } |
1849 | #endif | |
73a25462 | 1850 | if (dev->active == dev->tags_on_last_queuefull) { |
1da177e4 | 1851 | |
73a25462 | 1852 | dev->last_queuefull_same_count++; |
1da177e4 | 1853 | /* |
73a25462 HR |
1854 | * If we repeatedly see a queue full |
1855 | * at the same queue depth, this | |
1856 | * device has a fixed number of tag | |
1857 | * slots. Lock in this tag depth | |
1858 | * so we stop seeing queue fulls from | |
1859 | * this device. | |
1da177e4 | 1860 | */ |
73a25462 HR |
1861 | if (dev->last_queuefull_same_count |
1862 | == AHD_LOCK_TAGS_COUNT) { | |
1863 | dev->maxtags = dev->active; | |
1864 | ahd_print_path(ahd, scb); | |
1865 | printf("Locking max tag count at %d\n", | |
1866 | dev->active); | |
1da177e4 | 1867 | } |
73a25462 HR |
1868 | } else { |
1869 | dev->tags_on_last_queuefull = dev->active; | |
1870 | dev->last_queuefull_same_count = 0; | |
1da177e4 | 1871 | } |
73a25462 HR |
1872 | ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); |
1873 | ahd_set_scsi_status(scb, SCSI_STATUS_OK); | |
1874 | ahd_platform_set_tags(ahd, &devinfo, | |
1875 | (dev->flags & AHD_DEV_Q_BASIC) | |
1876 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
1da177e4 LT |
1877 | break; |
1878 | } | |
1da177e4 | 1879 | /* |
73a25462 HR |
1880 | * Drop down to a single opening, and treat this |
1881 | * as if the target returned BUSY SCSI status. | |
1da177e4 | 1882 | */ |
73a25462 HR |
1883 | dev->openings = 1; |
1884 | ahd_platform_set_tags(ahd, &devinfo, | |
1885 | (dev->flags & AHD_DEV_Q_BASIC) | |
1886 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
1887 | ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); | |
1888 | } | |
1da177e4 LT |
1889 | } |
1890 | ||
73a25462 HR |
1891 | static void |
1892 | ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) | |
1da177e4 | 1893 | { |
1da177e4 | 1894 | /* |
73a25462 HR |
1895 | * Map CAM error codes into Linux Error codes. We |
1896 | * avoid the conversion so that the DV code has the | |
1897 | * full error information available when making | |
1898 | * state change decisions. | |
1da177e4 | 1899 | */ |
73a25462 HR |
1900 | { |
1901 | uint32_t status; | |
1902 | u_int new_status; | |
1da177e4 | 1903 | |
73a25462 HR |
1904 | status = ahd_cmd_get_transaction_status(cmd); |
1905 | switch (status) { | |
1906 | case CAM_REQ_INPROG: | |
1907 | case CAM_REQ_CMP: | |
1908 | case CAM_SCSI_STATUS_ERROR: | |
1909 | new_status = DID_OK; | |
1910 | break; | |
1911 | case CAM_REQ_ABORTED: | |
1912 | new_status = DID_ABORT; | |
1913 | break; | |
1914 | case CAM_BUSY: | |
1915 | new_status = DID_BUS_BUSY; | |
1916 | break; | |
1917 | case CAM_REQ_INVALID: | |
1918 | case CAM_PATH_INVALID: | |
1919 | new_status = DID_BAD_TARGET; | |
1920 | break; | |
1921 | case CAM_SEL_TIMEOUT: | |
1922 | new_status = DID_NO_CONNECT; | |
1923 | break; | |
1924 | case CAM_SCSI_BUS_RESET: | |
1925 | case CAM_BDR_SENT: | |
1926 | new_status = DID_RESET; | |
1927 | break; | |
1928 | case CAM_UNCOR_PARITY: | |
1929 | new_status = DID_PARITY; | |
1930 | break; | |
1931 | case CAM_CMD_TIMEOUT: | |
1932 | new_status = DID_TIME_OUT; | |
1933 | break; | |
1934 | case CAM_UA_ABORT: | |
1935 | case CAM_REQ_CMP_ERR: | |
1936 | case CAM_AUTOSENSE_FAIL: | |
1937 | case CAM_NO_HBA: | |
1938 | case CAM_DATA_RUN_ERR: | |
1939 | case CAM_UNEXP_BUSFREE: | |
1940 | case CAM_SEQUENCE_FAIL: | |
1941 | case CAM_CCB_LEN_ERR: | |
1942 | case CAM_PROVIDE_FAIL: | |
1943 | case CAM_REQ_TERMIO: | |
1944 | case CAM_UNREC_HBA_ERROR: | |
1945 | case CAM_REQ_TOO_BIG: | |
1946 | new_status = DID_ERROR; | |
1947 | break; | |
1948 | case CAM_REQUEUE_REQ: | |
1949 | new_status = DID_REQUEUE; | |
1950 | break; | |
1951 | default: | |
1952 | /* We should never get here */ | |
1953 | new_status = DID_ERROR; | |
1954 | break; | |
1955 | } | |
1956 | ||
1957 | ahd_cmd_set_transaction_status(cmd, new_status); | |
1958 | } | |
1959 | ||
1960 | cmd->scsi_done(cmd); | |
1da177e4 LT |
1961 | } |
1962 | ||
1da177e4 | 1963 | void |
73a25462 | 1964 | ahd_freeze_simq(struct ahd_softc *ahd) |
1da177e4 | 1965 | { |
7b22da38 | 1966 | scsi_block_requests(ahd->platform_data->host); |
1da177e4 LT |
1967 | } |
1968 | ||
1da177e4 | 1969 | void |
73a25462 | 1970 | ahd_release_simq(struct ahd_softc *ahd) |
1da177e4 | 1971 | { |
7b22da38 | 1972 | scsi_unblock_requests(ahd->platform_data->host); |
73a25462 | 1973 | } |
1da177e4 | 1974 | |
73a25462 HR |
1975 | static int |
1976 | ahd_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag) | |
1977 | { | |
1978 | struct ahd_softc *ahd; | |
1979 | struct ahd_linux_device *dev; | |
1980 | struct scb *pending_scb; | |
1981 | u_int saved_scbptr; | |
1982 | u_int active_scbptr; | |
1983 | u_int last_phase; | |
1984 | u_int saved_scsiid; | |
1985 | u_int cdb_byte; | |
1986 | int retval; | |
1987 | int was_paused; | |
1988 | int paused; | |
1989 | int wait; | |
1990 | int disconnected; | |
11668bb6 | 1991 | int found; |
73a25462 | 1992 | ahd_mode_state saved_modes; |
4065a413 | 1993 | unsigned long flags; |
73a25462 HR |
1994 | |
1995 | pending_scb = NULL; | |
1996 | paused = FALSE; | |
1997 | wait = FALSE; | |
1998 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
1999 | ||
017560fc JG |
2000 | scmd_printk(KERN_INFO, cmd, |
2001 | "Attempting to queue a%s message:", | |
73a25462 HR |
2002 | flag == SCB_ABORT ? "n ABORT" : " TARGET RESET"); |
2003 | ||
2004 | printf("CDB:"); | |
2005 | for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) | |
2006 | printf(" 0x%x", cmd->cmnd[cdb_byte]); | |
2007 | printf("\n"); | |
2008 | ||
4065a413 | 2009 | ahd_lock(ahd, &flags); |
1da177e4 | 2010 | |
1da177e4 | 2011 | /* |
73a25462 HR |
2012 | * First determine if we currently own this command. |
2013 | * Start by searching the device queue. If not found | |
2014 | * there, check the pending_scb list. If not found | |
2015 | * at all, and the system wanted us to just abort the | |
2016 | * command, return success. | |
1da177e4 | 2017 | */ |
73a25462 HR |
2018 | dev = scsi_transport_device_data(cmd->device); |
2019 | ||
2020 | if (dev == NULL) { | |
2021 | /* | |
2022 | * No target device for this command exists, | |
2023 | * so we must not still own the command. | |
2024 | */ | |
017560fc | 2025 | scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); |
73a25462 HR |
2026 | retval = SUCCESS; |
2027 | goto no_cmd; | |
2028 | } | |
1da177e4 | 2029 | |
1da177e4 | 2030 | /* |
73a25462 | 2031 | * See if we can find a matching cmd in the pending list. |
1da177e4 | 2032 | */ |
73a25462 HR |
2033 | LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { |
2034 | if (pending_scb->io_ctx == cmd) | |
2035 | break; | |
1da177e4 LT |
2036 | } |
2037 | ||
73a25462 | 2038 | if (pending_scb == NULL && flag == SCB_DEVICE_RESET) { |
1da177e4 | 2039 | |
73a25462 HR |
2040 | /* Any SCB for this device will do for a target reset */ |
2041 | LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { | |
422c0d61 JG |
2042 | if (ahd_match_scb(ahd, pending_scb, |
2043 | scmd_id(cmd), | |
2044 | scmd_channel(cmd) + 'A', | |
73a25462 | 2045 | CAM_LUN_WILDCARD, |
dce20067 | 2046 | SCB_LIST_NULL, ROLE_INITIATOR)) |
73a25462 | 2047 | break; |
1da177e4 LT |
2048 | } |
2049 | } | |
2050 | ||
73a25462 | 2051 | if (pending_scb == NULL) { |
017560fc | 2052 | scmd_printk(KERN_INFO, cmd, "Command not found\n"); |
73a25462 | 2053 | goto no_cmd; |
1da177e4 | 2054 | } |
1da177e4 | 2055 | |
73a25462 HR |
2056 | if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { |
2057 | /* | |
2058 | * We can't queue two recovery actions using the same SCB | |
2059 | */ | |
2060 | retval = FAILED; | |
2061 | goto done; | |
2062 | } | |
1da177e4 | 2063 | |
1da177e4 | 2064 | /* |
73a25462 HR |
2065 | * Ensure that the card doesn't do anything |
2066 | * behind our back. Also make sure that we | |
2067 | * didn't "just" miss an interrupt that would | |
2068 | * affect this cmd. | |
1da177e4 | 2069 | */ |
73a25462 HR |
2070 | was_paused = ahd_is_paused(ahd); |
2071 | ahd_pause_and_flushwork(ahd); | |
2072 | paused = TRUE; | |
1da177e4 | 2073 | |
73a25462 | 2074 | if ((pending_scb->flags & SCB_ACTIVE) == 0) { |
017560fc | 2075 | scmd_printk(KERN_INFO, cmd, "Command already completed\n"); |
73a25462 HR |
2076 | goto no_cmd; |
2077 | } | |
1da177e4 | 2078 | |
73a25462 HR |
2079 | printf("%s: At time of recovery, card was %spaused\n", |
2080 | ahd_name(ahd), was_paused ? "" : "not "); | |
2081 | ahd_dump_card_state(ahd); | |
1da177e4 | 2082 | |
73a25462 HR |
2083 | disconnected = TRUE; |
2084 | if (flag == SCB_ABORT) { | |
2085 | if (ahd_search_qinfifo(ahd, cmd->device->id, | |
2086 | cmd->device->channel + 'A', | |
2087 | cmd->device->lun, | |
2088 | pending_scb->hscb->tag, | |
2089 | ROLE_INITIATOR, CAM_REQ_ABORTED, | |
2090 | SEARCH_COMPLETE) > 0) { | |
2091 | printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", | |
2092 | ahd_name(ahd), cmd->device->channel, | |
2093 | cmd->device->id, cmd->device->lun); | |
2094 | retval = SUCCESS; | |
2095 | goto done; | |
2096 | } | |
2097 | } else if (ahd_search_qinfifo(ahd, cmd->device->id, | |
2098 | cmd->device->channel + 'A', | |
2099 | cmd->device->lun, pending_scb->hscb->tag, | |
2100 | ROLE_INITIATOR, /*status*/0, | |
2101 | SEARCH_COUNT) > 0) { | |
2102 | disconnected = FALSE; | |
2103 | } | |
1da177e4 | 2104 | |
73a25462 HR |
2105 | saved_modes = ahd_save_modes(ahd); |
2106 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); | |
2107 | last_phase = ahd_inb(ahd, LASTPHASE); | |
2108 | saved_scbptr = ahd_get_scbptr(ahd); | |
2109 | active_scbptr = saved_scbptr; | |
11668bb6 HR |
2110 | if (disconnected && ((last_phase != P_BUSFREE) || |
2111 | (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0)) { | |
73a25462 | 2112 | struct scb *bus_scb; |
1da177e4 | 2113 | |
73a25462 HR |
2114 | bus_scb = ahd_lookup_scb(ahd, active_scbptr); |
2115 | if (bus_scb == pending_scb) | |
2116 | disconnected = FALSE; | |
2117 | else if (flag != SCB_ABORT | |
2118 | && ahd_inb(ahd, SAVED_SCSIID) == pending_scb->hscb->scsiid | |
2119 | && ahd_inb(ahd, SAVED_LUN) == SCB_GET_LUN(pending_scb)) | |
2120 | disconnected = FALSE; | |
1da177e4 | 2121 | } |
73a25462 HR |
2122 | |
2123 | /* | |
2124 | * At this point, pending_scb is the scb associated with the | |
2125 | * passed in command. That command is currently active on the | |
2126 | * bus or is in the disconnected state. | |
2127 | */ | |
2128 | saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); | |
11668bb6 | 2129 | if (SCB_GET_TAG(pending_scb) == active_scbptr |
73a25462 | 2130 | || (flag == SCB_DEVICE_RESET |
11668bb6 | 2131 | && SCSIID_TARGET(ahd, saved_scsiid) == scmd_id(cmd))) { |
73a25462 | 2132 | |
1da177e4 | 2133 | /* |
73a25462 HR |
2134 | * We're active on the bus, so assert ATN |
2135 | * and hope that the target responds. | |
1da177e4 | 2136 | */ |
73a25462 | 2137 | pending_scb = ahd_lookup_scb(ahd, active_scbptr); |
11668bb6 | 2138 | pending_scb->flags |= SCB_RECOVERY_SCB|SCB_DEVICE_RESET; |
73a25462 HR |
2139 | ahd_outb(ahd, MSG_OUT, HOST_MSG); |
2140 | ahd_outb(ahd, SCSISIGO, last_phase|ATNO); | |
11668bb6 | 2141 | scmd_printk(KERN_INFO, cmd, "BDR message in message buffer\n"); |
73a25462 | 2142 | wait = TRUE; |
11668bb6 HR |
2143 | } else if (last_phase != P_BUSFREE |
2144 | && ahd_inb(ahd, SCSIPHASE) == 0) { | |
2145 | /* | |
2146 | * SCB is not identified, there | |
2147 | * is no pending REQ, and the sequencer | |
2148 | * has not seen a busfree. Looks like | |
2149 | * a stuck connection waiting to | |
2150 | * go busfree. Reset the bus. | |
2151 | */ | |
2152 | found = ahd_reset_channel(ahd, cmd->device->channel + 'A', | |
2153 | /*Initiate Reset*/TRUE); | |
2154 | printf("%s: Issued Channel %c Bus Reset. " | |
2155 | "%d SCBs aborted\n", ahd_name(ahd), | |
2156 | cmd->device->channel + 'A', found); | |
73a25462 HR |
2157 | } else if (disconnected) { |
2158 | ||
2159 | /* | |
2160 | * Actually re-queue this SCB in an attempt | |
2161 | * to select the device before it reconnects. | |
2162 | */ | |
11668bb6 | 2163 | pending_scb->flags |= SCB_RECOVERY_SCB|flag; |
73a25462 HR |
2164 | ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); |
2165 | pending_scb->hscb->cdb_len = 0; | |
2166 | pending_scb->hscb->task_attribute = 0; | |
2167 | pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; | |
2168 | ||
2169 | if ((pending_scb->flags & SCB_PACKETIZED) != 0) { | |
1da177e4 | 2170 | /* |
73a25462 HR |
2171 | * Mark the SCB has having an outstanding |
2172 | * task management function. Should the command | |
2173 | * complete normally before the task management | |
2174 | * function can be sent, the host will be notified | |
2175 | * to abort our requeued SCB. | |
1da177e4 | 2176 | */ |
73a25462 HR |
2177 | ahd_outb(ahd, SCB_TASK_MANAGEMENT, |
2178 | pending_scb->hscb->task_management); | |
2179 | } else { | |
2180 | /* | |
2181 | * If non-packetized, set the MK_MESSAGE control | |
2182 | * bit indicating that we desire to send a message. | |
2183 | * We also set the disconnected flag since there is | |
2184 | * no guarantee that our SCB control byte matches | |
2185 | * the version on the card. We don't want the | |
2186 | * sequencer to abort the command thinking an | |
2187 | * unsolicited reselection occurred. | |
2188 | */ | |
2189 | pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; | |
2190 | ||
2191 | /* | |
2192 | * The sequencer will never re-reference the | |
2193 | * in-core SCB. To make sure we are notified | |
2194 | * during reslection, set the MK_MESSAGE flag in | |
2195 | * the card's copy of the SCB. | |
2196 | */ | |
2197 | ahd_outb(ahd, SCB_CONTROL, | |
2198 | ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); | |
1da177e4 | 2199 | } |
73a25462 | 2200 | |
1da177e4 | 2201 | /* |
73a25462 HR |
2202 | * Clear out any entries in the QINFIFO first |
2203 | * so we are the next SCB for this target | |
2204 | * to run. | |
1da177e4 | 2205 | */ |
73a25462 HR |
2206 | ahd_search_qinfifo(ahd, cmd->device->id, |
2207 | cmd->device->channel + 'A', cmd->device->lun, | |
2208 | SCB_LIST_NULL, ROLE_INITIATOR, | |
2209 | CAM_REQUEUE_REQ, SEARCH_COMPLETE); | |
2210 | ahd_qinfifo_requeue_tail(ahd, pending_scb); | |
2211 | ahd_set_scbptr(ahd, saved_scbptr); | |
2212 | ahd_print_path(ahd, pending_scb); | |
2213 | printf("Device is disconnected, re-queuing SCB\n"); | |
2214 | wait = TRUE; | |
2215 | } else { | |
017560fc | 2216 | scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); |
73a25462 HR |
2217 | retval = FAILED; |
2218 | goto done; | |
1da177e4 | 2219 | } |
1da177e4 | 2220 | |
73a25462 | 2221 | no_cmd: |
1da177e4 | 2222 | /* |
73a25462 HR |
2223 | * Our assumption is that if we don't have the command, no |
2224 | * recovery action was required, so we return success. Again, | |
2225 | * the semantics of the mid-layer recovery engine are not | |
2226 | * well defined, so this may change in time. | |
1da177e4 | 2227 | */ |
73a25462 HR |
2228 | retval = SUCCESS; |
2229 | done: | |
2230 | if (paused) | |
2231 | ahd_unpause(ahd); | |
2232 | if (wait) { | |
7b22da38 | 2233 | DECLARE_COMPLETION(done); |
1da177e4 | 2234 | |
7b22da38 | 2235 | ahd->platform_data->eh_done = &done; |
4065a413 CH |
2236 | ahd_unlock(ahd, &flags); |
2237 | ||
11668bb6 | 2238 | printf("%s: Recovery code sleeping\n", ahd_name(ahd)); |
7b22da38 HR |
2239 | if (!wait_for_completion_timeout(&done, 5 * HZ)) { |
2240 | ahd_lock(ahd, &flags); | |
2241 | ahd->platform_data->eh_done = NULL; | |
2242 | ahd_unlock(ahd, &flags); | |
11668bb6 HR |
2243 | printf("%s: Timer Expired (active %d)\n", |
2244 | ahd_name(ahd), dev->active); | |
73a25462 | 2245 | retval = FAILED; |
1da177e4 | 2246 | } |
7b22da38 | 2247 | printf("Recovery code awake\n"); |
eb221849 HR |
2248 | } else |
2249 | ahd_unlock(ahd, &flags); | |
2250 | ||
7b22da38 HR |
2251 | if (retval != SUCCESS) |
2252 | printf("%s: Command abort returning 0x%x\n", | |
2253 | ahd_name(ahd), retval); | |
2254 | ||
2255 | return retval; | |
1da177e4 LT |
2256 | } |
2257 | ||
73a25462 | 2258 | static void ahd_linux_set_width(struct scsi_target *starget, int width) |
1da177e4 | 2259 | { |
73a25462 HR |
2260 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2261 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2262 | struct ahd_devinfo devinfo; | |
2263 | unsigned long flags; | |
1da177e4 | 2264 | |
73a25462 HR |
2265 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2266 | starget->channel + 'A', ROLE_INITIATOR); | |
2267 | ahd_lock(ahd, &flags); | |
2268 | ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); | |
2269 | ahd_unlock(ahd, &flags); | |
2270 | } | |
2271 | ||
2272 | static void ahd_linux_set_period(struct scsi_target *starget, int period) | |
2273 | { | |
2274 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2275 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2276 | struct ahd_tmode_tstate *tstate; | |
2277 | struct ahd_initiator_tinfo *tinfo | |
2278 | = ahd_fetch_transinfo(ahd, | |
2279 | starget->channel + 'A', | |
2280 | shost->this_id, starget->id, &tstate); | |
2281 | struct ahd_devinfo devinfo; | |
2282 | unsigned int ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 | 2283 | unsigned int dt; |
73a25462 HR |
2284 | unsigned long flags; |
2285 | unsigned long offset = tinfo->goal.offset; | |
1da177e4 | 2286 | |
a4b53a11 HR |
2287 | #ifdef AHD_DEBUG |
2288 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2289 | printf("%s: set period to %d\n", ahd_name(ahd), period); | |
2290 | #endif | |
73a25462 HR |
2291 | if (offset == 0) |
2292 | offset = MAX_OFFSET; | |
1da177e4 | 2293 | |
73a25462 HR |
2294 | if (period < 8) |
2295 | period = 8; | |
2296 | if (period < 10) { | |
2297 | ppr_options |= MSG_EXT_PPR_DT_REQ; | |
2298 | if (period == 8) | |
2299 | ppr_options |= MSG_EXT_PPR_IU_REQ; | |
1da177e4 LT |
2300 | } |
2301 | ||
a4b53a11 HR |
2302 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
2303 | ||
73a25462 HR |
2304 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2305 | starget->channel + 'A', ROLE_INITIATOR); | |
1da177e4 | 2306 | |
73a25462 HR |
2307 | /* all PPR requests apart from QAS require wide transfers */ |
2308 | if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { | |
2309 | if (spi_width(starget) == 0) | |
2310 | ppr_options &= MSG_EXT_PPR_QAS_REQ; | |
1da177e4 | 2311 | } |
73a25462 | 2312 | |
a4b53a11 HR |
2313 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2314 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2315 | ||
73a25462 HR |
2316 | ahd_lock(ahd, &flags); |
2317 | ahd_set_syncrate(ahd, &devinfo, period, offset, | |
2318 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2319 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2320 | } |
2321 | ||
73a25462 | 2322 | static void ahd_linux_set_offset(struct scsi_target *starget, int offset) |
1da177e4 | 2323 | { |
73a25462 HR |
2324 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2325 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2326 | struct ahd_tmode_tstate *tstate; | |
2327 | struct ahd_initiator_tinfo *tinfo | |
2328 | = ahd_fetch_transinfo(ahd, | |
2329 | starget->channel + 'A', | |
2330 | shost->this_id, starget->id, &tstate); | |
2331 | struct ahd_devinfo devinfo; | |
2332 | unsigned int ppr_options = 0; | |
2333 | unsigned int period = 0; | |
a4b53a11 | 2334 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
73a25462 HR |
2335 | unsigned long flags; |
2336 | ||
a4b53a11 HR |
2337 | #ifdef AHD_DEBUG |
2338 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2339 | printf("%s: set offset to %d\n", ahd_name(ahd), offset); | |
2340 | #endif | |
2341 | ||
73a25462 HR |
2342 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2343 | starget->channel + 'A', ROLE_INITIATOR); | |
2344 | if (offset != 0) { | |
2345 | period = tinfo->goal.period; | |
2346 | ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 HR |
2347 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2348 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
1da177e4 | 2349 | } |
a4b53a11 | 2350 | |
73a25462 HR |
2351 | ahd_lock(ahd, &flags); |
2352 | ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, | |
2353 | AHD_TRANS_GOAL, FALSE); | |
2354 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2355 | } |
2356 | ||
73a25462 | 2357 | static void ahd_linux_set_dt(struct scsi_target *starget, int dt) |
1da177e4 | 2358 | { |
73a25462 HR |
2359 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2360 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2361 | struct ahd_tmode_tstate *tstate; | |
2362 | struct ahd_initiator_tinfo *tinfo | |
2363 | = ahd_fetch_transinfo(ahd, | |
2364 | starget->channel + 'A', | |
2365 | shost->this_id, starget->id, &tstate); | |
2366 | struct ahd_devinfo devinfo; | |
2367 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2368 | & ~MSG_EXT_PPR_DT_REQ; | |
2369 | unsigned int period = tinfo->goal.period; | |
52b5cfb3 | 2370 | unsigned int width = tinfo->goal.width; |
73a25462 HR |
2371 | unsigned long flags; |
2372 | ||
a4b53a11 HR |
2373 | #ifdef AHD_DEBUG |
2374 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2375 | printf("%s: %s DT\n", ahd_name(ahd), | |
2376 | dt ? "enabling" : "disabling"); | |
2377 | #endif | |
73a25462 HR |
2378 | if (dt) { |
2379 | ppr_options |= MSG_EXT_PPR_DT_REQ; | |
52b5cfb3 HR |
2380 | if (!width) |
2381 | ahd_linux_set_width(starget, 1); | |
a4b53a11 HR |
2382 | } else { |
2383 | if (period <= 9) | |
2384 | period = 10; /* If resetting DT, period must be >= 25ns */ | |
2385 | /* IU is invalid without DT set */ | |
2386 | ppr_options &= ~MSG_EXT_PPR_IU_REQ; | |
2387 | } | |
73a25462 HR |
2388 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2389 | starget->channel + 'A', ROLE_INITIATOR); | |
2390 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2391 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2392 | |
73a25462 HR |
2393 | ahd_lock(ahd, &flags); |
2394 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2395 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2396 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2397 | } |
2398 | ||
73a25462 | 2399 | static void ahd_linux_set_qas(struct scsi_target *starget, int qas) |
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 = tinfo->goal.ppr_options | |
2410 | & ~MSG_EXT_PPR_QAS_REQ; | |
2411 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2412 | unsigned int dt; |
73a25462 HR |
2413 | unsigned long flags; |
2414 | ||
a4b53a11 HR |
2415 | #ifdef AHD_DEBUG |
2416 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2417 | printf("%s: %s QAS\n", ahd_name(ahd), | |
2418 | qas ? "enabling" : "disabling"); | |
2419 | #endif | |
2420 | ||
2421 | if (qas) { | |
2422 | ppr_options |= MSG_EXT_PPR_QAS_REQ; | |
2423 | } | |
2424 | ||
2425 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2426 | |
2427 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2428 | starget->channel + 'A', ROLE_INITIATOR); | |
2429 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2430 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2431 | |
73a25462 HR |
2432 | ahd_lock(ahd, &flags); |
2433 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2434 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2435 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2436 | } |
2437 | ||
73a25462 | 2438 | static void ahd_linux_set_iu(struct scsi_target *starget, int iu) |
1da177e4 | 2439 | { |
73a25462 HR |
2440 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2441 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2442 | struct ahd_tmode_tstate *tstate; | |
2443 | struct ahd_initiator_tinfo *tinfo | |
2444 | = ahd_fetch_transinfo(ahd, | |
2445 | starget->channel + 'A', | |
2446 | shost->this_id, starget->id, &tstate); | |
2447 | struct ahd_devinfo devinfo; | |
2448 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2449 | & ~MSG_EXT_PPR_IU_REQ; | |
2450 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2451 | unsigned int dt; |
73a25462 HR |
2452 | unsigned long flags; |
2453 | ||
a4b53a11 HR |
2454 | #ifdef AHD_DEBUG |
2455 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2456 | printf("%s: %s IU\n", ahd_name(ahd), | |
2457 | iu ? "enabling" : "disabling"); | |
2458 | #endif | |
2459 | ||
2460 | if (iu) { | |
73a25462 | 2461 | ppr_options |= MSG_EXT_PPR_IU_REQ; |
a4b53a11 HR |
2462 | ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ |
2463 | } | |
2464 | ||
2465 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2466 | |
2467 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2468 | starget->channel + 'A', ROLE_INITIATOR); | |
2469 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2470 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2471 | |
73a25462 HR |
2472 | ahd_lock(ahd, &flags); |
2473 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2474 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2475 | ahd_unlock(ahd, &flags); | |
2476 | } | |
1da177e4 | 2477 | |
73a25462 HR |
2478 | static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) |
2479 | { | |
2480 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2481 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2482 | struct ahd_tmode_tstate *tstate; | |
2483 | struct ahd_initiator_tinfo *tinfo | |
2484 | = ahd_fetch_transinfo(ahd, | |
2485 | starget->channel + 'A', | |
2486 | shost->this_id, starget->id, &tstate); | |
2487 | struct ahd_devinfo devinfo; | |
2488 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2489 | & ~MSG_EXT_PPR_RD_STRM; | |
2490 | unsigned int period = tinfo->goal.period; | |
2491 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2492 | unsigned long flags; | |
2493 | ||
a4b53a11 HR |
2494 | #ifdef AHD_DEBUG |
2495 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2496 | printf("%s: %s Read Streaming\n", ahd_name(ahd), | |
2497 | rdstrm ? "enabling" : "disabling"); | |
2498 | #endif | |
2499 | ||
73a25462 HR |
2500 | if (rdstrm) |
2501 | ppr_options |= MSG_EXT_PPR_RD_STRM; | |
2502 | ||
2503 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2504 | starget->channel + 'A', ROLE_INITIATOR); | |
2505 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2506 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2507 | |
a4b53a11 HR |
2508 | ahd_lock(ahd, &flags); |
2509 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2510 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2511 | ahd_unlock(ahd, &flags); | |
2512 | } | |
2513 | ||
2514 | static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) | |
2515 | { | |
2516 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2517 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2518 | struct ahd_tmode_tstate *tstate; | |
2519 | struct ahd_initiator_tinfo *tinfo | |
2520 | = ahd_fetch_transinfo(ahd, | |
2521 | starget->channel + 'A', | |
2522 | shost->this_id, starget->id, &tstate); | |
2523 | struct ahd_devinfo devinfo; | |
2524 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2525 | & ~MSG_EXT_PPR_WR_FLOW; | |
2526 | unsigned int period = tinfo->goal.period; | |
2527 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2528 | unsigned long flags; | |
2529 | ||
2530 | #ifdef AHD_DEBUG | |
2531 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2532 | printf("%s: %s Write Flow Control\n", ahd_name(ahd), | |
2533 | wrflow ? "enabling" : "disabling"); | |
2534 | #endif | |
2535 | ||
2536 | if (wrflow) | |
2537 | ppr_options |= MSG_EXT_PPR_WR_FLOW; | |
2538 | ||
2539 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2540 | starget->channel + 'A', ROLE_INITIATOR); | |
2541 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2542 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2543 | ||
a4b53a11 HR |
2544 | ahd_lock(ahd, &flags); |
2545 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2546 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2547 | ahd_unlock(ahd, &flags); | |
2548 | } | |
2549 | ||
2550 | static void ahd_linux_set_rti(struct scsi_target *starget, int rti) | |
2551 | { | |
2552 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2553 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2554 | struct ahd_tmode_tstate *tstate; | |
2555 | struct ahd_initiator_tinfo *tinfo | |
2556 | = ahd_fetch_transinfo(ahd, | |
2557 | starget->channel + 'A', | |
2558 | shost->this_id, starget->id, &tstate); | |
2559 | struct ahd_devinfo devinfo; | |
2560 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2561 | & ~MSG_EXT_PPR_RTI; | |
2562 | unsigned int period = tinfo->goal.period; | |
2563 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2564 | unsigned long flags; | |
2565 | ||
2566 | if ((ahd->features & AHD_RTI) == 0) { | |
2567 | #ifdef AHD_DEBUG | |
2568 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2569 | printf("%s: RTI not available\n", ahd_name(ahd)); | |
2570 | #endif | |
2571 | return; | |
2572 | } | |
2573 | ||
2574 | #ifdef AHD_DEBUG | |
2575 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2576 | printf("%s: %s RTI\n", ahd_name(ahd), | |
2577 | rti ? "enabling" : "disabling"); | |
2578 | #endif | |
2579 | ||
2580 | if (rti) | |
2581 | ppr_options |= MSG_EXT_PPR_RTI; | |
2582 | ||
2583 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2584 | starget->channel + 'A', ROLE_INITIATOR); | |
2585 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2586 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2587 | ||
a4b53a11 HR |
2588 | ahd_lock(ahd, &flags); |
2589 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2590 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2591 | ahd_unlock(ahd, &flags); | |
2592 | } | |
2593 | ||
2594 | static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) | |
2595 | { | |
2596 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2597 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2598 | struct ahd_tmode_tstate *tstate; | |
2599 | struct ahd_initiator_tinfo *tinfo | |
2600 | = ahd_fetch_transinfo(ahd, | |
2601 | starget->channel + 'A', | |
2602 | shost->this_id, starget->id, &tstate); | |
2603 | struct ahd_devinfo devinfo; | |
2604 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2605 | & ~MSG_EXT_PPR_PCOMP_EN; | |
2606 | unsigned int period = tinfo->goal.period; | |
2607 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2608 | unsigned long flags; | |
2609 | ||
2610 | #ifdef AHD_DEBUG | |
2611 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2612 | printf("%s: %s Precompensation\n", ahd_name(ahd), | |
2613 | pcomp ? "Enable" : "Disable"); | |
2614 | #endif | |
2615 | ||
2616 | if (pcomp) | |
2617 | ppr_options |= MSG_EXT_PPR_PCOMP_EN; | |
2618 | ||
2619 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2620 | starget->channel + 'A', ROLE_INITIATOR); | |
2621 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2622 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2623 | ||
73a25462 HR |
2624 | ahd_lock(ahd, &flags); |
2625 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2626 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2627 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2628 | } |
2629 | ||
88ff29a4 JB |
2630 | static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) |
2631 | { | |
2632 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2633 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2634 | struct ahd_tmode_tstate *tstate; | |
2635 | struct ahd_initiator_tinfo *tinfo | |
2636 | = ahd_fetch_transinfo(ahd, | |
2637 | starget->channel + 'A', | |
2638 | shost->this_id, starget->id, &tstate); | |
2639 | struct ahd_devinfo devinfo; | |
2640 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2641 | & ~MSG_EXT_PPR_HOLD_MCS; | |
2642 | unsigned int period = tinfo->goal.period; | |
2643 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2644 | unsigned long flags; | |
2645 | ||
2646 | if (hold) | |
2647 | ppr_options |= MSG_EXT_PPR_HOLD_MCS; | |
2648 | ||
2649 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2650 | starget->channel + 'A', ROLE_INITIATOR); | |
2651 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2652 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2653 | ||
2654 | ahd_lock(ahd, &flags); | |
2655 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2656 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2657 | ahd_unlock(ahd, &flags); | |
2658 | } | |
2659 | ||
2660 | ||
2661 | ||
73a25462 HR |
2662 | static struct spi_function_template ahd_linux_transport_functions = { |
2663 | .set_offset = ahd_linux_set_offset, | |
2664 | .show_offset = 1, | |
2665 | .set_period = ahd_linux_set_period, | |
2666 | .show_period = 1, | |
2667 | .set_width = ahd_linux_set_width, | |
2668 | .show_width = 1, | |
2669 | .set_dt = ahd_linux_set_dt, | |
2670 | .show_dt = 1, | |
2671 | .set_iu = ahd_linux_set_iu, | |
2672 | .show_iu = 1, | |
2673 | .set_qas = ahd_linux_set_qas, | |
2674 | .show_qas = 1, | |
2675 | .set_rd_strm = ahd_linux_set_rd_strm, | |
2676 | .show_rd_strm = 1, | |
a4b53a11 HR |
2677 | .set_wr_flow = ahd_linux_set_wr_flow, |
2678 | .show_wr_flow = 1, | |
2679 | .set_rti = ahd_linux_set_rti, | |
2680 | .show_rti = 1, | |
2681 | .set_pcomp_en = ahd_linux_set_pcomp_en, | |
2682 | .show_pcomp_en = 1, | |
88ff29a4 JB |
2683 | .set_hold_mcs = ahd_linux_set_hold_mcs, |
2684 | .show_hold_mcs = 1, | |
73a25462 HR |
2685 | }; |
2686 | ||
1da177e4 LT |
2687 | static int __init |
2688 | ahd_linux_init(void) | |
2689 | { | |
85a46523 CH |
2690 | int error = 0; |
2691 | ||
2692 | /* | |
2693 | * If we've been passed any parameters, process them now. | |
2694 | */ | |
2695 | if (aic79xx) | |
2696 | aic79xx_setup(aic79xx); | |
2697 | ||
2698 | ahd_linux_transport_template = | |
2699 | spi_attach_transport(&ahd_linux_transport_functions); | |
73a25462 HR |
2700 | if (!ahd_linux_transport_template) |
2701 | return -ENODEV; | |
85a46523 | 2702 | |
73a25462 HR |
2703 | scsi_transport_reserve_target(ahd_linux_transport_template, |
2704 | sizeof(struct ahd_linux_target)); | |
2705 | scsi_transport_reserve_device(ahd_linux_transport_template, | |
2706 | sizeof(struct ahd_linux_device)); | |
a80b3424 | 2707 | |
85a46523 CH |
2708 | error = ahd_linux_pci_init(); |
2709 | if (error) | |
2710 | spi_release_transport(ahd_linux_transport_template); | |
2711 | return error; | |
1da177e4 LT |
2712 | } |
2713 | ||
2714 | static void __exit | |
2715 | ahd_linux_exit(void) | |
2716 | { | |
1da177e4 | 2717 | ahd_linux_pci_exit(); |
73a25462 | 2718 | spi_release_transport(ahd_linux_transport_template); |
1da177e4 LT |
2719 | } |
2720 | ||
2721 | module_init(ahd_linux_init); | |
2722 | module_exit(ahd_linux_exit); |