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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 | ||
1da177e4 LT |
245 | /* |
246 | * Should we force EXTENDED translation on a controller. | |
247 | * 0 == Use whatever is in the SEEPROM or default to off | |
248 | * 1 == Use whatever is in the SEEPROM or default to on | |
249 | */ | |
250 | static uint32_t aic79xx_extended; | |
251 | ||
252 | /* | |
253 | * PCI bus parity checking of the Adaptec controllers. This is somewhat | |
254 | * dubious at best. To my knowledge, this option has never actually | |
255 | * solved a PCI parity problem, but on certain machines with broken PCI | |
256 | * chipset configurations, it can generate tons of false error messages. | |
257 | * It's included in the driver for completeness. | |
258 | * 0 = Shut off PCI parity check | |
259 | * non-0 = Enable PCI parity check | |
260 | * | |
261 | * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this | |
262 | * variable to -1 you would actually want to simply pass the variable | |
263 | * name without a number. That will invert the 0 which will result in | |
264 | * -1. | |
265 | */ | |
266 | static uint32_t aic79xx_pci_parity = ~0; | |
267 | ||
268 | /* | |
269 | * There are lots of broken chipsets in the world. Some of them will | |
270 | * violate the PCI spec when we issue byte sized memory writes to our | |
271 | * controller. I/O mapped register access, if allowed by the given | |
272 | * platform, will work in almost all cases. | |
273 | */ | |
274 | uint32_t aic79xx_allow_memio = ~0; | |
275 | ||
1da177e4 LT |
276 | /* |
277 | * So that we can set how long each device is given as a selection timeout. | |
278 | * The table of values goes like this: | |
279 | * 0 - 256ms | |
280 | * 1 - 128ms | |
281 | * 2 - 64ms | |
282 | * 3 - 32ms | |
283 | * We default to 256ms because some older devices need a longer time | |
284 | * to respond to initial selection. | |
285 | */ | |
286 | static uint32_t aic79xx_seltime; | |
287 | ||
288 | /* | |
289 | * Certain devices do not perform any aging on commands. Should the | |
290 | * device be saturated by commands in one portion of the disk, it is | |
291 | * possible for transactions on far away sectors to never be serviced. | |
292 | * To handle these devices, we can periodically send an ordered tag to | |
293 | * force all outstanding transactions to be serviced prior to a new | |
294 | * transaction. | |
295 | */ | |
296 | uint32_t aic79xx_periodic_otag; | |
297 | ||
3fb08612 HR |
298 | /* Some storage boxes are using an LSI chip which has a bug making it |
299 | * impossible to use aic79xx Rev B chip in 320 speeds. The following | |
300 | * storage boxes have been reported to be buggy: | |
301 | * EonStor 3U 16-Bay: U16U-G3A3 | |
302 | * EonStor 2U 12-Bay: U12U-G3A3 | |
303 | * SentinelRAID: 2500F R5 / R6 | |
304 | * SentinelRAID: 2500F R1 | |
305 | * SentinelRAID: 2500F/1500F | |
306 | * SentinelRAID: 150F | |
307 | * | |
308 | * To get around this LSI bug, you can set your board to 160 mode | |
309 | * or you can enable the SLOWCRC bit. | |
310 | */ | |
311 | uint32_t aic79xx_slowcrc; | |
312 | ||
1da177e4 LT |
313 | /* |
314 | * Module information and settable options. | |
315 | */ | |
316 | static char *aic79xx = NULL; | |
317 | ||
318 | MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>"); | |
319 | MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver"); | |
320 | MODULE_LICENSE("Dual BSD/GPL"); | |
321 | MODULE_VERSION(AIC79XX_DRIVER_VERSION); | |
73a25462 | 322 | module_param(aic79xx, charp, 0444); |
1da177e4 | 323 | MODULE_PARM_DESC(aic79xx, |
2b6ee9b5 | 324 | "period-delimited options string:\n" |
1da177e4 LT |
325 | " verbose Enable verbose/diagnostic logging\n" |
326 | " allow_memio Allow device registers to be memory mapped\n" | |
327 | " debug Bitmask of debug values to enable\n" | |
328 | " no_reset Supress initial bus resets\n" | |
329 | " extended Enable extended geometry on all controllers\n" | |
330 | " periodic_otag Send an ordered tagged transaction\n" | |
331 | " periodically to prevent tag starvation.\n" | |
332 | " This may be required by some older disk\n" | |
333 | " or drives/RAID arrays.\n" | |
1da177e4 LT |
334 | " tag_info:<tag_str> Set per-target tag depth\n" |
335 | " global_tag_depth:<int> Global tag depth for all targets on all buses\n" | |
1da177e4 LT |
336 | " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n" |
337 | " precomp:<pcomp_list> Set the signal precompensation (0-7).\n" | |
338 | " amplitude:<int> Set the signal amplitude (0-7).\n" | |
339 | " seltime:<int> Selection Timeout:\n" | |
340 | " (0/256ms,1/128ms,2/64ms,3/32ms)\n" | |
3fb08612 | 341 | " slowcrc Turn on the SLOWCRC bit (Rev B only)\n" |
1da177e4 LT |
342 | "\n" |
343 | " Sample /etc/modprobe.conf line:\n" | |
344 | " Enable verbose logging\n" | |
345 | " Set tag depth on Controller 2/Target 2 to 10 tags\n" | |
346 | " Shorten the selection timeout to 128ms\n" | |
347 | "\n" | |
348 | " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n" | |
2b6ee9b5 | 349 | ); |
1da177e4 LT |
350 | |
351 | static void ahd_linux_handle_scsi_status(struct ahd_softc *, | |
73a25462 | 352 | struct scsi_device *, |
1da177e4 LT |
353 | struct scb *); |
354 | static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, | |
73a25462 | 355 | struct scsi_cmnd *cmd); |
6902f416 | 356 | static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd); |
1da177e4 | 357 | static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd); |
1da177e4 LT |
358 | static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd, |
359 | struct ahd_devinfo *devinfo); | |
73a25462 | 360 | static void ahd_linux_device_queue_depth(struct scsi_device *); |
60a13213 | 361 | static int ahd_linux_run_command(struct ahd_softc*, |
73a25462 | 362 | struct ahd_linux_device *, |
60a13213 | 363 | struct scsi_cmnd *); |
1da177e4 | 364 | static void ahd_linux_setup_tag_info_global(char *p); |
73a25462 | 365 | static int aic79xx_setup(char *c); |
85a46523 CH |
366 | |
367 | static int ahd_linux_unit; | |
368 | ||
1da177e4 LT |
369 | |
370 | /****************************** Inlines ***************************************/ | |
1da177e4 LT |
371 | static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*); |
372 | ||
1da177e4 LT |
373 | static __inline void |
374 | ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb) | |
375 | { | |
73a25462 | 376 | struct scsi_cmnd *cmd; |
1da177e4 LT |
377 | int direction; |
378 | ||
379 | cmd = scb->io_ctx; | |
be7db055 | 380 | direction = cmd->sc_data_direction; |
1da177e4 LT |
381 | ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE); |
382 | if (cmd->use_sg != 0) { | |
383 | struct scatterlist *sg; | |
384 | ||
385 | sg = (struct scatterlist *)cmd->request_buffer; | |
386 | pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction); | |
387 | } else if (cmd->request_bufflen != 0) { | |
388 | pci_unmap_single(ahd->dev_softc, | |
389 | scb->platform_data->buf_busaddr, | |
390 | cmd->request_bufflen, direction); | |
391 | } | |
392 | } | |
393 | ||
394 | /******************************** Macros **************************************/ | |
395 | #define BUILD_SCSIID(ahd, cmd) \ | |
422c0d61 | 396 | (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id) |
1da177e4 | 397 | |
1da177e4 LT |
398 | /* |
399 | * Return a string describing the driver. | |
400 | */ | |
401 | static const char * | |
402 | ahd_linux_info(struct Scsi_Host *host) | |
403 | { | |
404 | static char buffer[512]; | |
405 | char ahd_info[256]; | |
406 | char *bp; | |
407 | struct ahd_softc *ahd; | |
408 | ||
409 | bp = &buffer[0]; | |
410 | ahd = *(struct ahd_softc **)host->hostdata; | |
411 | memset(bp, 0, sizeof(buffer)); | |
412 | strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev "); | |
413 | strcat(bp, AIC79XX_DRIVER_VERSION); | |
414 | strcat(bp, "\n"); | |
415 | strcat(bp, " <"); | |
416 | strcat(bp, ahd->description); | |
417 | strcat(bp, ">\n"); | |
418 | strcat(bp, " "); | |
419 | ahd_controller_info(ahd, ahd_info); | |
420 | strcat(bp, ahd_info); | |
421 | strcat(bp, "\n"); | |
422 | ||
423 | return (bp); | |
424 | } | |
425 | ||
426 | /* | |
427 | * Queue an SCB to the controller. | |
428 | */ | |
429 | static int | |
73a25462 | 430 | ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *)) |
1da177e4 LT |
431 | { |
432 | struct ahd_softc *ahd; | |
73a25462 | 433 | struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device); |
4065a413 | 434 | int rtn = SCSI_MLQUEUE_HOST_BUSY; |
1da177e4 LT |
435 | |
436 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
437 | ||
7b22da38 HR |
438 | cmd->scsi_done = scsi_done; |
439 | cmd->result = CAM_REQ_INPROG << 16; | |
440 | rtn = ahd_linux_run_command(ahd, dev, cmd); | |
1da177e4 | 441 | |
4065a413 | 442 | return rtn; |
1da177e4 LT |
443 | } |
444 | ||
73a25462 HR |
445 | static inline struct scsi_target ** |
446 | ahd_linux_target_in_softc(struct scsi_target *starget) | |
447 | { | |
448 | struct ahd_softc *ahd = | |
449 | *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); | |
450 | unsigned int target_offset; | |
451 | ||
452 | target_offset = starget->id; | |
453 | if (starget->channel != 0) | |
454 | target_offset += 8; | |
455 | ||
456 | return &ahd->platform_data->starget[target_offset]; | |
457 | } | |
458 | ||
1da177e4 | 459 | static int |
73a25462 | 460 | ahd_linux_target_alloc(struct scsi_target *starget) |
1da177e4 | 461 | { |
73a25462 HR |
462 | struct ahd_softc *ahd = |
463 | *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata); | |
986a25f9 | 464 | struct seeprom_config *sc = ahd->seep_config; |
73a25462 HR |
465 | unsigned long flags; |
466 | struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); | |
73a25462 HR |
467 | struct ahd_devinfo devinfo; |
468 | struct ahd_initiator_tinfo *tinfo; | |
469 | struct ahd_tmode_tstate *tstate; | |
470 | char channel = starget->channel + 'A'; | |
1da177e4 | 471 | |
73a25462 HR |
472 | ahd_lock(ahd, &flags); |
473 | ||
474 | BUG_ON(*ahd_targp != NULL); | |
475 | ||
476 | *ahd_targp = starget; | |
73a25462 | 477 | |
986a25f9 HR |
478 | if (sc) { |
479 | int flags = sc->device_flags[starget->id]; | |
480 | ||
481 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
482 | starget->id, &tstate); | |
483 | ||
484 | if ((flags & CFPACKETIZED) == 0) { | |
485 | /* Do not negotiate packetized transfers */ | |
486 | spi_rd_strm(starget) = 0; | |
487 | spi_pcomp_en(starget) = 0; | |
488 | spi_rti(starget) = 0; | |
489 | spi_wr_flow(starget) = 0; | |
490 | spi_hold_mcs(starget) = 0; | |
491 | } else { | |
492 | if ((ahd->features & AHD_RTI) == 0) | |
493 | spi_rti(starget) = 0; | |
494 | } | |
495 | ||
496 | if ((flags & CFQAS) == 0) | |
497 | spi_qas(starget) = 0; | |
498 | ||
499 | /* Transinfo values have been set to BIOS settings */ | |
500 | spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0; | |
501 | spi_min_period(starget) = tinfo->user.period; | |
502 | spi_max_offset(starget) = tinfo->user.offset; | |
503 | } | |
504 | ||
73a25462 HR |
505 | tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, |
506 | starget->id, &tstate); | |
507 | ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id, | |
508 | CAM_LUN_WILDCARD, channel, | |
509 | ROLE_INITIATOR); | |
73a25462 HR |
510 | ahd_set_syncrate(ahd, &devinfo, 0, 0, 0, |
511 | AHD_TRANS_GOAL, /*paused*/FALSE); | |
512 | ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT, | |
513 | AHD_TRANS_GOAL, /*paused*/FALSE); | |
514 | ahd_unlock(ahd, &flags); | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
519 | static void | |
520 | ahd_linux_target_destroy(struct scsi_target *starget) | |
521 | { | |
522 | struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget); | |
523 | ||
524 | *ahd_targp = NULL; | |
1da177e4 LT |
525 | } |
526 | ||
527 | static int | |
73a25462 | 528 | ahd_linux_slave_alloc(struct scsi_device *sdev) |
1da177e4 | 529 | { |
73a25462 HR |
530 | struct ahd_softc *ahd = |
531 | *((struct ahd_softc **)sdev->host->hostdata); | |
73a25462 | 532 | struct ahd_linux_device *dev; |
1da177e4 | 533 | |
1da177e4 | 534 | if (bootverbose) |
73a25462 HR |
535 | printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id); |
536 | ||
73a25462 HR |
537 | dev = scsi_transport_device_data(sdev); |
538 | memset(dev, 0, sizeof(*dev)); | |
539 | ||
540 | /* | |
541 | * We start out life using untagged | |
542 | * transactions of which we allow one. | |
543 | */ | |
544 | dev->openings = 1; | |
545 | ||
1da177e4 | 546 | /* |
73a25462 HR |
547 | * Set maxtags to 0. This will be changed if we |
548 | * later determine that we are dealing with | |
549 | * a tagged queuing capable device. | |
1da177e4 | 550 | */ |
73a25462 HR |
551 | dev->maxtags = 0; |
552 | ||
1da177e4 LT |
553 | return (0); |
554 | } | |
555 | ||
73a25462 HR |
556 | static int |
557 | ahd_linux_slave_configure(struct scsi_device *sdev) | |
558 | { | |
559 | struct ahd_softc *ahd; | |
560 | ||
561 | ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
562 | if (bootverbose) | |
017560fc | 563 | sdev_printk(KERN_INFO, sdev, "Slave Configure\n"); |
73a25462 HR |
564 | |
565 | ahd_linux_device_queue_depth(sdev); | |
566 | ||
567 | /* Initial Domain Validation */ | |
568 | if (!spi_initial_dv(sdev->sdev_target)) | |
569 | spi_dv_device(sdev); | |
570 | ||
571 | return 0; | |
572 | } | |
573 | ||
1da177e4 LT |
574 | #if defined(__i386__) |
575 | /* | |
576 | * Return the disk geometry for the given SCSI device. | |
577 | */ | |
578 | static int | |
1da177e4 LT |
579 | ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
580 | sector_t capacity, int geom[]) | |
581 | { | |
582 | uint8_t *bh; | |
1da177e4 LT |
583 | int heads; |
584 | int sectors; | |
585 | int cylinders; | |
586 | int ret; | |
587 | int extended; | |
588 | struct ahd_softc *ahd; | |
589 | ||
590 | ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
591 | ||
1da177e4 | 592 | bh = scsi_bios_ptable(bdev); |
1da177e4 LT |
593 | if (bh) { |
594 | ret = scsi_partsize(bh, capacity, | |
595 | &geom[2], &geom[0], &geom[1]); | |
1da177e4 | 596 | kfree(bh); |
1da177e4 LT |
597 | if (ret != -1) |
598 | return (ret); | |
599 | } | |
600 | heads = 64; | |
601 | sectors = 32; | |
602 | cylinders = aic_sector_div(capacity, heads, sectors); | |
603 | ||
604 | if (aic79xx_extended != 0) | |
605 | extended = 1; | |
606 | else | |
607 | extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0; | |
608 | if (extended && cylinders >= 1024) { | |
609 | heads = 255; | |
610 | sectors = 63; | |
611 | cylinders = aic_sector_div(capacity, heads, sectors); | |
612 | } | |
613 | geom[0] = heads; | |
614 | geom[1] = sectors; | |
615 | geom[2] = cylinders; | |
616 | return (0); | |
617 | } | |
618 | #endif | |
619 | ||
620 | /* | |
621 | * Abort the current SCSI command(s). | |
622 | */ | |
623 | static int | |
73a25462 HR |
624 | ahd_linux_abort(struct scsi_cmnd *cmd) |
625 | { | |
626 | int error; | |
6902f416 HR |
627 | |
628 | error = ahd_linux_queue_abort_cmd(cmd); | |
73a25462 | 629 | |
73a25462 HR |
630 | return error; |
631 | } | |
632 | ||
633 | /* | |
634 | * Attempt to send a target reset message to the device that timed out. | |
635 | */ | |
636 | static int | |
637 | ahd_linux_dev_reset(struct scsi_cmnd *cmd) | |
638 | { | |
6902f416 HR |
639 | struct ahd_softc *ahd; |
640 | struct ahd_linux_device *dev; | |
641 | struct scb *reset_scb; | |
642 | u_int cdb_byte; | |
643 | int retval = SUCCESS; | |
644 | int paused; | |
645 | int wait; | |
646 | struct ahd_initiator_tinfo *tinfo; | |
647 | struct ahd_tmode_tstate *tstate; | |
648 | unsigned long flags; | |
6e9a4738 | 649 | DECLARE_COMPLETION_ONSTACK(done); |
73a25462 | 650 | |
6902f416 HR |
651 | reset_scb = NULL; |
652 | paused = FALSE; | |
653 | wait = FALSE; | |
654 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
655 | ||
656 | scmd_printk(KERN_INFO, cmd, | |
657 | "Attempting to queue a TARGET RESET message:"); | |
658 | ||
659 | printf("CDB:"); | |
660 | for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) | |
661 | printf(" 0x%x", cmd->cmnd[cdb_byte]); | |
662 | printf("\n"); | |
663 | ||
664 | /* | |
665 | * Determine if we currently own this command. | |
666 | */ | |
667 | dev = scsi_transport_device_data(cmd->device); | |
668 | ||
669 | if (dev == NULL) { | |
670 | /* | |
671 | * No target device for this command exists, | |
672 | * so we must not still own the command. | |
673 | */ | |
674 | scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); | |
675 | return SUCCESS; | |
676 | } | |
677 | ||
678 | /* | |
679 | * Generate us a new SCB | |
680 | */ | |
681 | reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX); | |
682 | if (!reset_scb) { | |
683 | scmd_printk(KERN_INFO, cmd, "No SCB available\n"); | |
684 | return FAILED; | |
685 | } | |
686 | ||
687 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
688 | cmd->device->id, &tstate); | |
689 | reset_scb->io_ctx = cmd; | |
690 | reset_scb->platform_data->dev = dev; | |
691 | reset_scb->sg_count = 0; | |
692 | ahd_set_residual(reset_scb, 0); | |
693 | ahd_set_sense_residual(reset_scb, 0); | |
694 | reset_scb->platform_data->xfer_len = 0; | |
695 | reset_scb->hscb->control = 0; | |
696 | reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd); | |
697 | reset_scb->hscb->lun = cmd->device->lun; | |
698 | reset_scb->hscb->cdb_len = 0; | |
699 | reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET; | |
700 | reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE; | |
701 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { | |
702 | reset_scb->flags |= SCB_PACKETIZED; | |
703 | } else { | |
704 | reset_scb->hscb->control |= MK_MESSAGE; | |
705 | } | |
706 | dev->openings--; | |
707 | dev->active++; | |
708 | dev->commands_issued++; | |
709 | ||
710 | ahd_lock(ahd, &flags); | |
711 | ||
712 | LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links); | |
713 | ahd_queue_scb(ahd, reset_scb); | |
714 | ||
715 | ahd->platform_data->eh_done = &done; | |
716 | ahd_unlock(ahd, &flags); | |
717 | ||
718 | printf("%s: Device reset code sleeping\n", ahd_name(ahd)); | |
719 | if (!wait_for_completion_timeout(&done, 5 * HZ)) { | |
720 | ahd_lock(ahd, &flags); | |
721 | ahd->platform_data->eh_done = NULL; | |
722 | ahd_unlock(ahd, &flags); | |
723 | printf("%s: Device reset timer expired (active %d)\n", | |
724 | ahd_name(ahd), dev->active); | |
725 | retval = FAILED; | |
726 | } | |
727 | printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval); | |
728 | ||
729 | return (retval); | |
73a25462 HR |
730 | } |
731 | ||
732 | /* | |
733 | * Reset the SCSI bus. | |
734 | */ | |
735 | static int | |
736 | ahd_linux_bus_reset(struct scsi_cmnd *cmd) | |
1da177e4 LT |
737 | { |
738 | struct ahd_softc *ahd; | |
73a25462 | 739 | int found; |
f41b5cec | 740 | unsigned long flags; |
1da177e4 | 741 | |
1da177e4 | 742 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; |
73a25462 HR |
743 | #ifdef AHD_DEBUG |
744 | if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) | |
745 | printf("%s: Bus reset called for cmd %p\n", | |
746 | ahd_name(ahd), cmd); | |
747 | #endif | |
f41b5cec HR |
748 | ahd_lock(ahd, &flags); |
749 | ||
422c0d61 | 750 | found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A', |
73a25462 | 751 | /*initiate reset*/TRUE); |
f41b5cec | 752 | ahd_unlock(ahd, &flags); |
1da177e4 | 753 | |
73a25462 HR |
754 | if (bootverbose) |
755 | printf("%s: SCSI bus reset delivered. " | |
756 | "%d SCBs aborted.\n", ahd_name(ahd), found); | |
1da177e4 | 757 | |
73a25462 HR |
758 | return (SUCCESS); |
759 | } | |
1da177e4 | 760 | |
73a25462 HR |
761 | struct scsi_host_template aic79xx_driver_template = { |
762 | .module = THIS_MODULE, | |
763 | .name = "aic79xx", | |
85a46523 | 764 | .proc_name = "aic79xx", |
73a25462 HR |
765 | .proc_info = ahd_linux_proc_info, |
766 | .info = ahd_linux_info, | |
767 | .queuecommand = ahd_linux_queue, | |
768 | .eh_abort_handler = ahd_linux_abort, | |
769 | .eh_device_reset_handler = ahd_linux_dev_reset, | |
770 | .eh_bus_reset_handler = ahd_linux_bus_reset, | |
771 | #if defined(__i386__) | |
772 | .bios_param = ahd_linux_biosparam, | |
773 | #endif | |
774 | .can_queue = AHD_MAX_QUEUE, | |
775 | .this_id = -1, | |
776 | .cmd_per_lun = 2, | |
777 | .use_clustering = ENABLE_CLUSTERING, | |
778 | .slave_alloc = ahd_linux_slave_alloc, | |
779 | .slave_configure = ahd_linux_slave_configure, | |
73a25462 HR |
780 | .target_alloc = ahd_linux_target_alloc, |
781 | .target_destroy = ahd_linux_target_destroy, | |
782 | }; | |
1da177e4 | 783 | |
73a25462 HR |
784 | /******************************** Bus DMA *************************************/ |
785 | int | |
786 | ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent, | |
787 | bus_size_t alignment, bus_size_t boundary, | |
788 | dma_addr_t lowaddr, dma_addr_t highaddr, | |
789 | bus_dma_filter_t *filter, void *filterarg, | |
790 | bus_size_t maxsize, int nsegments, | |
791 | bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag) | |
792 | { | |
793 | bus_dma_tag_t dmat; | |
794 | ||
795 | dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT); | |
796 | if (dmat == NULL) | |
797 | return (ENOMEM); | |
1da177e4 | 798 | |
1da177e4 | 799 | /* |
73a25462 HR |
800 | * Linux is very simplistic about DMA memory. For now don't |
801 | * maintain all specification information. Once Linux supplies | |
802 | * better facilities for doing these operations, or the | |
803 | * needs of this particular driver change, we might need to do | |
804 | * more here. | |
1da177e4 | 805 | */ |
73a25462 HR |
806 | dmat->alignment = alignment; |
807 | dmat->boundary = boundary; | |
808 | dmat->maxsize = maxsize; | |
809 | *ret_tag = dmat; | |
810 | return (0); | |
811 | } | |
1da177e4 | 812 | |
73a25462 HR |
813 | void |
814 | ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat) | |
815 | { | |
816 | free(dmat, M_DEVBUF); | |
817 | } | |
1da177e4 | 818 | |
73a25462 HR |
819 | int |
820 | ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr, | |
821 | int flags, bus_dmamap_t *mapp) | |
822 | { | |
823 | *vaddr = pci_alloc_consistent(ahd->dev_softc, | |
824 | dmat->maxsize, mapp); | |
825 | if (*vaddr == NULL) | |
826 | return (ENOMEM); | |
827 | return(0); | |
828 | } | |
1da177e4 | 829 | |
73a25462 HR |
830 | void |
831 | ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat, | |
832 | void* vaddr, bus_dmamap_t map) | |
833 | { | |
834 | pci_free_consistent(ahd->dev_softc, dmat->maxsize, | |
835 | vaddr, map); | |
836 | } | |
837 | ||
838 | int | |
839 | ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map, | |
840 | void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb, | |
841 | void *cb_arg, int flags) | |
842 | { | |
1da177e4 | 843 | /* |
73a25462 HR |
844 | * Assume for now that this will only be used during |
845 | * initialization and not for per-transaction buffer mapping. | |
1da177e4 | 846 | */ |
73a25462 | 847 | bus_dma_segment_t stack_sg; |
1da177e4 | 848 | |
73a25462 HR |
849 | stack_sg.ds_addr = map; |
850 | stack_sg.ds_len = dmat->maxsize; | |
851 | cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); | |
852 | return (0); | |
853 | } | |
1da177e4 | 854 | |
73a25462 HR |
855 | void |
856 | ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
857 | { | |
858 | } | |
1da177e4 | 859 | |
73a25462 HR |
860 | int |
861 | ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map) | |
862 | { | |
863 | /* Nothing to do */ | |
864 | return (0); | |
865 | } | |
1da177e4 | 866 | |
73a25462 | 867 | /********************* Platform Dependent Functions ***************************/ |
73a25462 HR |
868 | static void |
869 | ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value) | |
870 | { | |
1da177e4 | 871 | |
73a25462 | 872 | if ((instance >= 0) |
6391a113 | 873 | && (instance < ARRAY_SIZE(aic79xx_iocell_info))) { |
73a25462 HR |
874 | uint8_t *iocell_info; |
875 | ||
876 | iocell_info = (uint8_t*)&aic79xx_iocell_info[instance]; | |
877 | iocell_info[index] = value & 0xFFFF; | |
878 | if (bootverbose) | |
879 | printf("iocell[%d:%ld] = %d\n", instance, index, value); | |
1da177e4 | 880 | } |
73a25462 | 881 | } |
1da177e4 | 882 | |
73a25462 HR |
883 | static void |
884 | ahd_linux_setup_tag_info_global(char *p) | |
885 | { | |
886 | int tags, i, j; | |
1da177e4 | 887 | |
73a25462 HR |
888 | tags = simple_strtoul(p + 1, NULL, 0) & 0xff; |
889 | printf("Setting Global Tags= %d\n", tags); | |
890 | ||
6391a113 | 891 | for (i = 0; i < ARRAY_SIZE(aic79xx_tag_info); i++) { |
73a25462 HR |
892 | for (j = 0; j < AHD_NUM_TARGETS; j++) { |
893 | aic79xx_tag_info[i].tag_commands[j] = tags; | |
1da177e4 | 894 | } |
1da177e4 | 895 | } |
1da177e4 LT |
896 | } |
897 | ||
1da177e4 | 898 | static void |
73a25462 | 899 | ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value) |
1da177e4 | 900 | { |
1da177e4 | 901 | |
73a25462 | 902 | if ((instance >= 0) && (targ >= 0) |
6391a113 | 903 | && (instance < ARRAY_SIZE(aic79xx_tag_info)) |
73a25462 HR |
904 | && (targ < AHD_NUM_TARGETS)) { |
905 | aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF; | |
906 | if (bootverbose) | |
907 | printf("tag_info[%d:%d] = %d\n", instance, targ, value); | |
1da177e4 | 908 | } |
1da177e4 LT |
909 | } |
910 | ||
1ff92730 CH |
911 | static char * |
912 | ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth, | |
913 | void (*callback)(u_long, int, int, int32_t), | |
914 | u_long callback_arg) | |
915 | { | |
916 | char *tok_end; | |
917 | char *tok_end2; | |
918 | int i; | |
919 | int instance; | |
920 | int targ; | |
921 | int done; | |
922 | char tok_list[] = {'.', ',', '{', '}', '\0'}; | |
923 | ||
924 | /* All options use a ':' name/arg separator */ | |
925 | if (*opt_arg != ':') | |
926 | return (opt_arg); | |
927 | opt_arg++; | |
928 | instance = -1; | |
929 | targ = -1; | |
930 | done = FALSE; | |
931 | /* | |
932 | * Restore separator that may be in | |
933 | * the middle of our option argument. | |
934 | */ | |
935 | tok_end = strchr(opt_arg, '\0'); | |
936 | if (tok_end < end) | |
937 | *tok_end = ','; | |
938 | while (!done) { | |
939 | switch (*opt_arg) { | |
940 | case '{': | |
941 | if (instance == -1) { | |
942 | instance = 0; | |
943 | } else { | |
944 | if (depth > 1) { | |
945 | if (targ == -1) | |
946 | targ = 0; | |
947 | } else { | |
948 | printf("Malformed Option %s\n", | |
949 | opt_name); | |
950 | done = TRUE; | |
951 | } | |
952 | } | |
953 | opt_arg++; | |
954 | break; | |
955 | case '}': | |
956 | if (targ != -1) | |
957 | targ = -1; | |
958 | else if (instance != -1) | |
959 | instance = -1; | |
960 | opt_arg++; | |
961 | break; | |
962 | case ',': | |
963 | case '.': | |
964 | if (instance == -1) | |
965 | done = TRUE; | |
966 | else if (targ >= 0) | |
967 | targ++; | |
968 | else if (instance >= 0) | |
969 | instance++; | |
970 | opt_arg++; | |
971 | break; | |
972 | case '\0': | |
973 | done = TRUE; | |
974 | break; | |
975 | default: | |
976 | tok_end = end; | |
977 | for (i = 0; tok_list[i]; i++) { | |
978 | tok_end2 = strchr(opt_arg, tok_list[i]); | |
979 | if ((tok_end2) && (tok_end2 < tok_end)) | |
980 | tok_end = tok_end2; | |
981 | } | |
982 | callback(callback_arg, instance, targ, | |
983 | simple_strtol(opt_arg, NULL, 0)); | |
984 | opt_arg = tok_end; | |
985 | break; | |
986 | } | |
987 | } | |
988 | return (opt_arg); | |
989 | } | |
990 | ||
1da177e4 | 991 | /* |
73a25462 HR |
992 | * Handle Linux boot parameters. This routine allows for assigning a value |
993 | * to a parameter with a ':' between the parameter and the value. | |
994 | * ie. aic79xx=stpwlev:1,extended | |
1da177e4 LT |
995 | */ |
996 | static int | |
73a25462 | 997 | aic79xx_setup(char *s) |
1da177e4 | 998 | { |
73a25462 HR |
999 | int i, n; |
1000 | char *p; | |
1001 | char *end; | |
1da177e4 | 1002 | |
73a25462 HR |
1003 | static struct { |
1004 | const char *name; | |
1005 | uint32_t *flag; | |
1006 | } options[] = { | |
1007 | { "extended", &aic79xx_extended }, | |
1008 | { "no_reset", &aic79xx_no_reset }, | |
1009 | { "verbose", &aic79xx_verbose }, | |
1010 | { "allow_memio", &aic79xx_allow_memio}, | |
1da177e4 | 1011 | #ifdef AHD_DEBUG |
73a25462 | 1012 | { "debug", &ahd_debug }, |
1da177e4 | 1013 | #endif |
73a25462 HR |
1014 | { "periodic_otag", &aic79xx_periodic_otag }, |
1015 | { "pci_parity", &aic79xx_pci_parity }, | |
1016 | { "seltime", &aic79xx_seltime }, | |
1017 | { "tag_info", NULL }, | |
1018 | { "global_tag_depth", NULL}, | |
1019 | { "slewrate", NULL }, | |
1020 | { "precomp", NULL }, | |
1021 | { "amplitude", NULL }, | |
3fb08612 | 1022 | { "slowcrc", &aic79xx_slowcrc }, |
73a25462 | 1023 | }; |
1da177e4 | 1024 | |
73a25462 | 1025 | end = strchr(s, '\0'); |
1da177e4 | 1026 | |
73a25462 | 1027 | /* |
6391a113 | 1028 | * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE |
73a25462 | 1029 | * will never be 0 in this case. |
6391a113 TK |
1030 | */ |
1031 | n = 0; | |
73a25462 HR |
1032 | |
1033 | while ((p = strsep(&s, ",.")) != NULL) { | |
1034 | if (*p == '\0') | |
1035 | continue; | |
6391a113 | 1036 | for (i = 0; i < ARRAY_SIZE(options); i++) { |
73a25462 HR |
1037 | |
1038 | n = strlen(options[i].name); | |
1039 | if (strncmp(options[i].name, p, n) == 0) | |
1040 | break; | |
1041 | } | |
6391a113 | 1042 | if (i == ARRAY_SIZE(options)) |
73a25462 HR |
1043 | continue; |
1044 | ||
1045 | if (strncmp(p, "global_tag_depth", n) == 0) { | |
1046 | ahd_linux_setup_tag_info_global(p + n); | |
1047 | } else if (strncmp(p, "tag_info", n) == 0) { | |
1ff92730 | 1048 | s = ahd_parse_brace_option("tag_info", p + n, end, |
73a25462 HR |
1049 | 2, ahd_linux_setup_tag_info, 0); |
1050 | } else if (strncmp(p, "slewrate", n) == 0) { | |
1ff92730 | 1051 | s = ahd_parse_brace_option("slewrate", |
73a25462 HR |
1052 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1053 | AIC79XX_SLEWRATE_INDEX); | |
1054 | } else if (strncmp(p, "precomp", n) == 0) { | |
1ff92730 | 1055 | s = ahd_parse_brace_option("precomp", |
73a25462 HR |
1056 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1057 | AIC79XX_PRECOMP_INDEX); | |
1058 | } else if (strncmp(p, "amplitude", n) == 0) { | |
1ff92730 | 1059 | s = ahd_parse_brace_option("amplitude", |
73a25462 HR |
1060 | p + n, end, 1, ahd_linux_setup_iocell_info, |
1061 | AIC79XX_AMPLITUDE_INDEX); | |
1062 | } else if (p[n] == ':') { | |
1063 | *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0); | |
1064 | } else if (!strncmp(p, "verbose", n)) { | |
1065 | *(options[i].flag) = 1; | |
1066 | } else { | |
1067 | *(options[i].flag) ^= 0xFFFFFFFF; | |
1068 | } | |
1069 | } | |
1070 | return 1; | |
1da177e4 LT |
1071 | } |
1072 | ||
73a25462 HR |
1073 | __setup("aic79xx=", aic79xx_setup); |
1074 | ||
1075 | uint32_t aic79xx_verbose; | |
1da177e4 | 1076 | |
1da177e4 | 1077 | int |
73a25462 | 1078 | ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template) |
1da177e4 | 1079 | { |
73a25462 HR |
1080 | char buf[80]; |
1081 | struct Scsi_Host *host; | |
1082 | char *new_name; | |
1083 | u_long s; | |
e7a1ca1d | 1084 | int retval; |
1da177e4 | 1085 | |
73a25462 HR |
1086 | template->name = ahd->description; |
1087 | host = scsi_host_alloc(template, sizeof(struct ahd_softc *)); | |
1088 | if (host == NULL) | |
1da177e4 LT |
1089 | return (ENOMEM); |
1090 | ||
73a25462 | 1091 | *((struct ahd_softc **)host->hostdata) = ahd; |
73a25462 HR |
1092 | ahd->platform_data->host = host; |
1093 | host->can_queue = AHD_MAX_QUEUE; | |
1094 | host->cmd_per_lun = 2; | |
1095 | host->sg_tablesize = AHD_NSEG; | |
1096 | host->this_id = ahd->our_id; | |
1097 | host->irq = ahd->platform_data->irq; | |
1098 | host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1099 | host->max_lun = AHD_NUM_LUNS; | |
1100 | host->max_channel = 0; | |
1101 | host->sg_tablesize = AHD_NSEG; | |
eb221849 | 1102 | ahd_lock(ahd, &s); |
85a46523 | 1103 | ahd_set_unit(ahd, ahd_linux_unit++); |
eb221849 | 1104 | ahd_unlock(ahd, &s); |
73a25462 HR |
1105 | sprintf(buf, "scsi%d", host->host_no); |
1106 | new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT); | |
1107 | if (new_name != NULL) { | |
1108 | strcpy(new_name, buf); | |
1109 | ahd_set_name(ahd, new_name); | |
1110 | } | |
1111 | host->unique_id = ahd->unit; | |
1112 | ahd_linux_initialize_scsi_bus(ahd); | |
1113 | ahd_intr_enable(ahd, TRUE); | |
73a25462 HR |
1114 | |
1115 | host->transportt = ahd_linux_transport_template; | |
1116 | ||
e7a1ca1d JJ |
1117 | retval = scsi_add_host(host, &ahd->dev_softc->dev); |
1118 | if (retval) { | |
1119 | printk(KERN_WARNING "aic79xx: scsi_add_host failed\n"); | |
1120 | scsi_host_put(host); | |
1121 | return retval; | |
1122 | } | |
1123 | ||
73a25462 | 1124 | scsi_scan_host(host); |
e7a1ca1d | 1125 | return 0; |
1da177e4 LT |
1126 | } |
1127 | ||
73a25462 HR |
1128 | uint64_t |
1129 | ahd_linux_get_memsize(void) | |
1da177e4 | 1130 | { |
73a25462 HR |
1131 | struct sysinfo si; |
1132 | ||
1133 | si_meminfo(&si); | |
1134 | return ((uint64_t)si.totalram << PAGE_SHIFT); | |
1da177e4 LT |
1135 | } |
1136 | ||
73a25462 HR |
1137 | /* |
1138 | * Place the SCSI bus into a known state by either resetting it, | |
1139 | * or forcing transfer negotiations on the next command to any | |
1140 | * target. | |
1141 | */ | |
1142 | static void | |
1143 | ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd) | |
1da177e4 | 1144 | { |
73a25462 HR |
1145 | u_int target_id; |
1146 | u_int numtarg; | |
eb221849 | 1147 | unsigned long s; |
1da177e4 | 1148 | |
73a25462 HR |
1149 | target_id = 0; |
1150 | numtarg = 0; | |
1151 | ||
1152 | if (aic79xx_no_reset != 0) | |
1153 | ahd->flags &= ~AHD_RESET_BUS_A; | |
1154 | ||
1155 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) | |
1156 | ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE); | |
1157 | else | |
1158 | numtarg = (ahd->features & AHD_WIDE) ? 16 : 8; | |
1da177e4 | 1159 | |
eb221849 HR |
1160 | ahd_lock(ahd, &s); |
1161 | ||
1da177e4 | 1162 | /* |
73a25462 HR |
1163 | * Force negotiation to async for all targets that |
1164 | * will not see an initial bus reset. | |
1da177e4 | 1165 | */ |
73a25462 HR |
1166 | for (; target_id < numtarg; target_id++) { |
1167 | struct ahd_devinfo devinfo; | |
1168 | struct ahd_initiator_tinfo *tinfo; | |
1169 | struct ahd_tmode_tstate *tstate; | |
1170 | ||
1171 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, | |
1172 | target_id, &tstate); | |
1173 | ahd_compile_devinfo(&devinfo, ahd->our_id, target_id, | |
1174 | CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR); | |
1175 | ahd_update_neg_request(ahd, &devinfo, tstate, | |
1176 | tinfo, AHD_NEG_ALWAYS); | |
1177 | } | |
eb221849 | 1178 | ahd_unlock(ahd, &s); |
73a25462 HR |
1179 | /* Give the bus some time to recover */ |
1180 | if ((ahd->flags & AHD_RESET_BUS_A) != 0) { | |
1181 | ahd_freeze_simq(ahd); | |
eb221849 HR |
1182 | msleep(AIC79XX_RESET_DELAY); |
1183 | ahd_release_simq(ahd); | |
73a25462 | 1184 | } |
1da177e4 LT |
1185 | } |
1186 | ||
1187 | int | |
73a25462 | 1188 | ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg) |
1da177e4 | 1189 | { |
73a25462 HR |
1190 | ahd->platform_data = |
1191 | malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT); | |
1192 | if (ahd->platform_data == NULL) | |
1193 | return (ENOMEM); | |
1194 | memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data)); | |
1195 | ahd->platform_data->irq = AHD_LINUX_NOIRQ; | |
1196 | ahd_lockinit(ahd); | |
73a25462 | 1197 | ahd->seltime = (aic79xx_seltime & 0x3) << 4; |
1da177e4 LT |
1198 | return (0); |
1199 | } | |
1200 | ||
73a25462 HR |
1201 | void |
1202 | ahd_platform_free(struct ahd_softc *ahd) | |
1da177e4 | 1203 | { |
73a25462 | 1204 | struct scsi_target *starget; |
f89d0a4e | 1205 | int i; |
1da177e4 | 1206 | |
73a25462 | 1207 | if (ahd->platform_data != NULL) { |
73a25462 HR |
1208 | /* destroy all of the device and target objects */ |
1209 | for (i = 0; i < AHD_NUM_TARGETS; i++) { | |
1210 | starget = ahd->platform_data->starget[i]; | |
1211 | if (starget != NULL) { | |
73a25462 HR |
1212 | ahd->platform_data->starget[i] = NULL; |
1213 | } | |
1214 | } | |
1da177e4 | 1215 | |
73a25462 HR |
1216 | if (ahd->platform_data->irq != AHD_LINUX_NOIRQ) |
1217 | free_irq(ahd->platform_data->irq, ahd); | |
1218 | if (ahd->tags[0] == BUS_SPACE_PIO | |
1219 | && ahd->bshs[0].ioport != 0) | |
1220 | release_region(ahd->bshs[0].ioport, 256); | |
1221 | if (ahd->tags[1] == BUS_SPACE_PIO | |
1222 | && ahd->bshs[1].ioport != 0) | |
1223 | release_region(ahd->bshs[1].ioport, 256); | |
1224 | if (ahd->tags[0] == BUS_SPACE_MEMIO | |
1225 | && ahd->bshs[0].maddr != NULL) { | |
1226 | iounmap(ahd->bshs[0].maddr); | |
1227 | release_mem_region(ahd->platform_data->mem_busaddr, | |
1228 | 0x1000); | |
1229 | } | |
97af50f6 JB |
1230 | if (ahd->platform_data->host) |
1231 | scsi_host_put(ahd->platform_data->host); | |
1232 | ||
73a25462 HR |
1233 | free(ahd->platform_data, M_DEVBUF); |
1234 | } | |
1da177e4 LT |
1235 | } |
1236 | ||
73a25462 HR |
1237 | void |
1238 | ahd_platform_init(struct ahd_softc *ahd) | |
1da177e4 | 1239 | { |
73a25462 HR |
1240 | /* |
1241 | * Lookup and commit any modified IO Cell options. | |
1242 | */ | |
6391a113 | 1243 | if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) { |
73a25462 | 1244 | struct ahd_linux_iocell_opts *iocell_opts; |
1da177e4 | 1245 | |
73a25462 HR |
1246 | iocell_opts = &aic79xx_iocell_info[ahd->unit]; |
1247 | if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP) | |
1248 | AHD_SET_PRECOMP(ahd, iocell_opts->precomp); | |
1249 | if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE) | |
1250 | AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate); | |
1251 | if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE) | |
1252 | AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude); | |
1da177e4 | 1253 | } |
1da177e4 | 1254 | |
1da177e4 LT |
1255 | } |
1256 | ||
73a25462 HR |
1257 | void |
1258 | ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1259 | { |
73a25462 HR |
1260 | ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), |
1261 | SCB_GET_CHANNEL(ahd, scb), | |
1262 | SCB_GET_LUN(scb), SCB_LIST_NULL, | |
1263 | ROLE_UNKNOWN, CAM_REQUEUE_REQ); | |
1da177e4 LT |
1264 | } |
1265 | ||
73a25462 | 1266 | void |
f89d0a4e HR |
1267 | ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev, |
1268 | struct ahd_devinfo *devinfo, ahd_queue_alg alg) | |
1da177e4 | 1269 | { |
73a25462 | 1270 | struct ahd_linux_device *dev; |
73a25462 HR |
1271 | int was_queuing; |
1272 | int now_queuing; | |
1da177e4 | 1273 | |
73a25462 HR |
1274 | if (sdev == NULL) |
1275 | return; | |
1da177e4 | 1276 | |
73a25462 | 1277 | dev = scsi_transport_device_data(sdev); |
1da177e4 | 1278 | |
73a25462 HR |
1279 | if (dev == NULL) |
1280 | return; | |
1281 | was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED); | |
1282 | switch (alg) { | |
1283 | default: | |
1284 | case AHD_QUEUE_NONE: | |
1285 | now_queuing = 0; | |
1286 | break; | |
1287 | case AHD_QUEUE_BASIC: | |
1288 | now_queuing = AHD_DEV_Q_BASIC; | |
1289 | break; | |
1290 | case AHD_QUEUE_TAGGED: | |
1291 | now_queuing = AHD_DEV_Q_TAGGED; | |
1292 | break; | |
1293 | } | |
1294 | if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0 | |
1295 | && (was_queuing != now_queuing) | |
1296 | && (dev->active != 0)) { | |
1297 | dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY; | |
1298 | dev->qfrozen++; | |
1da177e4 | 1299 | } |
1da177e4 | 1300 | |
73a25462 HR |
1301 | dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG); |
1302 | if (now_queuing) { | |
1303 | u_int usertags; | |
1da177e4 | 1304 | |
73a25462 HR |
1305 | usertags = ahd_linux_user_tagdepth(ahd, devinfo); |
1306 | if (!was_queuing) { | |
1307 | /* | |
1308 | * Start out agressively and allow our | |
1309 | * dynamic queue depth algorithm to take | |
1310 | * care of the rest. | |
1311 | */ | |
1312 | dev->maxtags = usertags; | |
1313 | dev->openings = dev->maxtags - dev->active; | |
1da177e4 | 1314 | } |
73a25462 HR |
1315 | if (dev->maxtags == 0) { |
1316 | /* | |
1317 | * Queueing is disabled by the user. | |
1318 | */ | |
1319 | dev->openings = 1; | |
1320 | } else if (alg == AHD_QUEUE_TAGGED) { | |
1321 | dev->flags |= AHD_DEV_Q_TAGGED; | |
1322 | if (aic79xx_periodic_otag != 0) | |
1323 | dev->flags |= AHD_DEV_PERIODIC_OTAG; | |
1324 | } else | |
1325 | dev->flags |= AHD_DEV_Q_BASIC; | |
1326 | } else { | |
1327 | /* We can only have one opening. */ | |
1328 | dev->maxtags = 0; | |
1329 | dev->openings = 1 - dev->active; | |
1da177e4 | 1330 | } |
1da177e4 | 1331 | |
73a25462 HR |
1332 | switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) { |
1333 | case AHD_DEV_Q_BASIC: | |
0aa800db HR |
1334 | scsi_set_tag_type(sdev, MSG_SIMPLE_TASK); |
1335 | scsi_activate_tcq(sdev, dev->openings + dev->active); | |
73a25462 HR |
1336 | break; |
1337 | case AHD_DEV_Q_TAGGED: | |
0aa800db HR |
1338 | scsi_set_tag_type(sdev, MSG_ORDERED_TASK); |
1339 | scsi_activate_tcq(sdev, dev->openings + dev->active); | |
73a25462 HR |
1340 | break; |
1341 | default: | |
1da177e4 | 1342 | /* |
73a25462 HR |
1343 | * We allow the OS to queue 2 untagged transactions to |
1344 | * us at any time even though we can only execute them | |
1345 | * serially on the controller/device. This should | |
1346 | * remove some latency. | |
1da177e4 | 1347 | */ |
0aa800db | 1348 | scsi_deactivate_tcq(sdev, 1); |
73a25462 | 1349 | break; |
1da177e4 | 1350 | } |
1da177e4 LT |
1351 | } |
1352 | ||
73a25462 HR |
1353 | int |
1354 | ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel, | |
1355 | int lun, u_int tag, role_t role, uint32_t status) | |
1da177e4 | 1356 | { |
73a25462 | 1357 | return 0; |
1da177e4 LT |
1358 | } |
1359 | ||
73a25462 HR |
1360 | static u_int |
1361 | ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo) | |
1da177e4 | 1362 | { |
73a25462 HR |
1363 | static int warned_user; |
1364 | u_int tags; | |
1da177e4 | 1365 | |
73a25462 HR |
1366 | tags = 0; |
1367 | if ((ahd->user_discenable & devinfo->target_mask) != 0) { | |
6391a113 | 1368 | if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) { |
73a25462 HR |
1369 | |
1370 | if (warned_user == 0) { | |
1371 | printf(KERN_WARNING | |
1372 | "aic79xx: WARNING: Insufficient tag_info instances\n" | |
1373 | "aic79xx: for installed controllers. Using defaults\n" | |
1374 | "aic79xx: Please update the aic79xx_tag_info array in\n" | |
1375 | "aic79xx: the aic79xx_osm.c source file.\n"); | |
1376 | warned_user++; | |
1377 | } | |
1378 | tags = AHD_MAX_QUEUE; | |
1379 | } else { | |
1380 | adapter_tag_info_t *tag_info; | |
1381 | ||
1382 | tag_info = &aic79xx_tag_info[ahd->unit]; | |
1383 | tags = tag_info->tag_commands[devinfo->target_offset]; | |
1384 | if (tags > AHD_MAX_QUEUE) | |
1385 | tags = AHD_MAX_QUEUE; | |
1da177e4 LT |
1386 | } |
1387 | } | |
73a25462 | 1388 | return (tags); |
1da177e4 LT |
1389 | } |
1390 | ||
1391 | /* | |
73a25462 | 1392 | * Determines the queue depth for a given device. |
1da177e4 LT |
1393 | */ |
1394 | static void | |
73a25462 | 1395 | ahd_linux_device_queue_depth(struct scsi_device *sdev) |
1da177e4 | 1396 | { |
73a25462 HR |
1397 | struct ahd_devinfo devinfo; |
1398 | u_int tags; | |
1399 | struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata); | |
1da177e4 | 1400 | |
73a25462 HR |
1401 | ahd_compile_devinfo(&devinfo, |
1402 | ahd->our_id, | |
1403 | sdev->sdev_target->id, sdev->lun, | |
1404 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1405 | ROLE_INITIATOR); | |
1406 | tags = ahd_linux_user_tagdepth(ahd, &devinfo); | |
1407 | if (tags != 0 && sdev->tagged_supported != 0) { | |
1da177e4 | 1408 | |
f89d0a4e HR |
1409 | ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_TAGGED); |
1410 | ahd_send_async(ahd, devinfo.channel, devinfo.target, | |
1411 | devinfo.lun, AC_TRANSFER_NEG); | |
73a25462 HR |
1412 | ahd_print_devinfo(ahd, &devinfo); |
1413 | printf("Tagged Queuing enabled. Depth %d\n", tags); | |
1414 | } else { | |
f89d0a4e HR |
1415 | ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_NONE); |
1416 | ahd_send_async(ahd, devinfo.channel, devinfo.target, | |
1417 | devinfo.lun, AC_TRANSFER_NEG); | |
73a25462 HR |
1418 | } |
1419 | } | |
1da177e4 | 1420 | |
73a25462 HR |
1421 | static int |
1422 | ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev, | |
1423 | struct scsi_cmnd *cmd) | |
1424 | { | |
1425 | struct scb *scb; | |
1426 | struct hardware_scb *hscb; | |
1427 | struct ahd_initiator_tinfo *tinfo; | |
1428 | struct ahd_tmode_tstate *tstate; | |
1429 | u_int col_idx; | |
1430 | uint16_t mask; | |
7b22da38 HR |
1431 | unsigned long flags; |
1432 | ||
1433 | ahd_lock(ahd, &flags); | |
1da177e4 LT |
1434 | |
1435 | /* | |
73a25462 | 1436 | * Get an scb to use. |
1da177e4 | 1437 | */ |
73a25462 HR |
1438 | tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id, |
1439 | cmd->device->id, &tstate); | |
1440 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0 | |
1441 | || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { | |
1442 | col_idx = AHD_NEVER_COL_IDX; | |
1443 | } else { | |
1444 | col_idx = AHD_BUILD_COL_IDX(cmd->device->id, | |
1445 | cmd->device->lun); | |
1446 | } | |
1447 | if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) { | |
1448 | ahd->flags |= AHD_RESOURCE_SHORTAGE; | |
7b22da38 | 1449 | ahd_unlock(ahd, &flags); |
73a25462 | 1450 | return SCSI_MLQUEUE_HOST_BUSY; |
1da177e4 | 1451 | } |
1da177e4 | 1452 | |
73a25462 HR |
1453 | scb->io_ctx = cmd; |
1454 | scb->platform_data->dev = dev; | |
1455 | hscb = scb->hscb; | |
1456 | cmd->host_scribble = (char *)scb; | |
1da177e4 | 1457 | |
73a25462 HR |
1458 | /* |
1459 | * Fill out basics of the HSCB. | |
1460 | */ | |
1461 | hscb->control = 0; | |
1462 | hscb->scsiid = BUILD_SCSIID(ahd, cmd); | |
1463 | hscb->lun = cmd->device->lun; | |
1464 | scb->hscb->task_management = 0; | |
1465 | mask = SCB_GET_TARGET_MASK(ahd, scb); | |
1da177e4 | 1466 | |
73a25462 HR |
1467 | if ((ahd->user_discenable & mask) != 0) |
1468 | hscb->control |= DISCENB; | |
1da177e4 | 1469 | |
73a25462 HR |
1470 | if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) |
1471 | scb->flags |= SCB_PACKETIZED; | |
1da177e4 | 1472 | |
73a25462 HR |
1473 | if ((tstate->auto_negotiate & mask) != 0) { |
1474 | scb->flags |= SCB_AUTO_NEGOTIATE; | |
1475 | scb->hscb->control |= MK_MESSAGE; | |
1476 | } | |
1477 | ||
1478 | if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) { | |
1479 | int msg_bytes; | |
1480 | uint8_t tag_msgs[2]; | |
1481 | ||
1482 | msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); | |
1483 | if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { | |
1484 | hscb->control |= tag_msgs[0]; | |
1485 | if (tag_msgs[0] == MSG_ORDERED_TASK) | |
1486 | dev->commands_since_idle_or_otag = 0; | |
1487 | } else | |
1488 | if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH | |
1489 | && (dev->flags & AHD_DEV_Q_TAGGED) != 0) { | |
1490 | hscb->control |= MSG_ORDERED_TASK; | |
1491 | dev->commands_since_idle_or_otag = 0; | |
1492 | } else { | |
1493 | hscb->control |= MSG_SIMPLE_TASK; | |
1da177e4 | 1494 | } |
73a25462 | 1495 | } |
1da177e4 | 1496 | |
73a25462 HR |
1497 | hscb->cdb_len = cmd->cmd_len; |
1498 | memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len); | |
1499 | ||
1500 | scb->platform_data->xfer_len = 0; | |
1501 | ahd_set_residual(scb, 0); | |
1502 | ahd_set_sense_residual(scb, 0); | |
1503 | scb->sg_count = 0; | |
1504 | if (cmd->use_sg != 0) { | |
1505 | void *sg; | |
1506 | struct scatterlist *cur_seg; | |
1507 | u_int nseg; | |
1508 | int dir; | |
1509 | ||
1510 | cur_seg = (struct scatterlist *)cmd->request_buffer; | |
1511 | dir = cmd->sc_data_direction; | |
1512 | nseg = pci_map_sg(ahd->dev_softc, cur_seg, | |
1513 | cmd->use_sg, dir); | |
1514 | scb->platform_data->xfer_len = 0; | |
1515 | for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) { | |
1516 | dma_addr_t addr; | |
1517 | bus_size_t len; | |
1518 | ||
1519 | addr = sg_dma_address(cur_seg); | |
1520 | len = sg_dma_len(cur_seg); | |
1521 | scb->platform_data->xfer_len += len; | |
1522 | sg = ahd_sg_setup(ahd, scb, sg, addr, len, | |
1523 | /*last*/nseg == 1); | |
1da177e4 | 1524 | } |
73a25462 HR |
1525 | } else if (cmd->request_bufflen != 0) { |
1526 | void *sg; | |
1527 | dma_addr_t addr; | |
1528 | int dir; | |
1529 | ||
1530 | sg = scb->sg_list; | |
1531 | dir = cmd->sc_data_direction; | |
1532 | addr = pci_map_single(ahd->dev_softc, | |
1533 | cmd->request_buffer, | |
1534 | cmd->request_bufflen, dir); | |
1535 | scb->platform_data->xfer_len = cmd->request_bufflen; | |
1536 | scb->platform_data->buf_busaddr = addr; | |
1537 | sg = ahd_sg_setup(ahd, scb, sg, addr, | |
1538 | cmd->request_bufflen, /*last*/TRUE); | |
1da177e4 | 1539 | } |
73a25462 HR |
1540 | |
1541 | LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links); | |
1542 | dev->openings--; | |
1543 | dev->active++; | |
1544 | dev->commands_issued++; | |
1545 | ||
1546 | if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0) | |
1547 | dev->commands_since_idle_or_otag++; | |
1548 | scb->flags |= SCB_ACTIVE; | |
1549 | ahd_queue_scb(ahd, scb); | |
1550 | ||
7b22da38 HR |
1551 | ahd_unlock(ahd, &flags); |
1552 | ||
73a25462 | 1553 | return 0; |
1da177e4 LT |
1554 | } |
1555 | ||
73a25462 HR |
1556 | /* |
1557 | * SCSI controller interrupt handler. | |
1558 | */ | |
1559 | irqreturn_t | |
7d12e780 | 1560 | ahd_linux_isr(int irq, void *dev_id) |
1da177e4 | 1561 | { |
73a25462 HR |
1562 | struct ahd_softc *ahd; |
1563 | u_long flags; | |
1564 | int ours; | |
1da177e4 | 1565 | |
73a25462 HR |
1566 | ahd = (struct ahd_softc *) dev_id; |
1567 | ahd_lock(ahd, &flags); | |
1568 | ours = ahd_intr(ahd); | |
1569 | ahd_unlock(ahd, &flags); | |
1570 | return IRQ_RETVAL(ours); | |
1da177e4 LT |
1571 | } |
1572 | ||
1da177e4 | 1573 | void |
73a25462 | 1574 | ahd_send_async(struct ahd_softc *ahd, char channel, |
f89d0a4e | 1575 | u_int target, u_int lun, ac_code code) |
1da177e4 | 1576 | { |
73a25462 HR |
1577 | switch (code) { |
1578 | case AC_TRANSFER_NEG: | |
1579 | { | |
1580 | char buf[80]; | |
1581 | struct scsi_target *starget; | |
73a25462 HR |
1582 | struct info_str info; |
1583 | struct ahd_initiator_tinfo *tinfo; | |
1584 | struct ahd_tmode_tstate *tstate; | |
1585 | unsigned int target_ppr_options; | |
1da177e4 | 1586 | |
73a25462 HR |
1587 | BUG_ON(target == CAM_TARGET_WILDCARD); |
1588 | ||
1589 | info.buffer = buf; | |
1590 | info.length = sizeof(buf); | |
1591 | info.offset = 0; | |
1592 | info.pos = 0; | |
1593 | tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id, | |
1594 | target, &tstate); | |
1595 | ||
1596 | /* | |
1597 | * Don't bother reporting results while | |
1598 | * negotiations are still pending. | |
1599 | */ | |
1600 | if (tinfo->curr.period != tinfo->goal.period | |
1601 | || tinfo->curr.width != tinfo->goal.width | |
1602 | || tinfo->curr.offset != tinfo->goal.offset | |
1603 | || tinfo->curr.ppr_options != tinfo->goal.ppr_options) | |
1604 | if (bootverbose == 0) | |
1605 | break; | |
1606 | ||
1607 | /* | |
1608 | * Don't bother reporting results that | |
1609 | * are identical to those last reported. | |
1610 | */ | |
1611 | starget = ahd->platform_data->starget[target]; | |
fc789a93 | 1612 | if (starget == NULL) |
73a25462 HR |
1613 | break; |
1614 | ||
1615 | target_ppr_options = | |
1616 | (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0) | |
1617 | + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0) | |
3f40d7d6 JB |
1618 | + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0) |
1619 | + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0) | |
1620 | + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0) | |
1621 | + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0) | |
88ff29a4 JB |
1622 | + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0) |
1623 | + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0); | |
73a25462 HR |
1624 | |
1625 | if (tinfo->curr.period == spi_period(starget) | |
1626 | && tinfo->curr.width == spi_width(starget) | |
1627 | && tinfo->curr.offset == spi_offset(starget) | |
1628 | && tinfo->curr.ppr_options == target_ppr_options) | |
1629 | if (bootverbose == 0) | |
1630 | break; | |
1631 | ||
1632 | spi_period(starget) = tinfo->curr.period; | |
1633 | spi_width(starget) = tinfo->curr.width; | |
1634 | spi_offset(starget) = tinfo->curr.offset; | |
a4b53a11 HR |
1635 | spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0; |
1636 | spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0; | |
1637 | spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0; | |
3f40d7d6 JB |
1638 | spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0; |
1639 | spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0; | |
1640 | spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0; | |
1641 | spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0; | |
88ff29a4 | 1642 | spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0; |
73a25462 | 1643 | spi_display_xfer_agreement(starget); |
1da177e4 | 1644 | break; |
73a25462 HR |
1645 | } |
1646 | case AC_SENT_BDR: | |
1647 | { | |
1648 | WARN_ON(lun != CAM_LUN_WILDCARD); | |
1649 | scsi_report_device_reset(ahd->platform_data->host, | |
1650 | channel - 'A', target); | |
1da177e4 LT |
1651 | break; |
1652 | } | |
73a25462 HR |
1653 | case AC_BUS_RESET: |
1654 | if (ahd->platform_data->host != NULL) { | |
1655 | scsi_report_bus_reset(ahd->platform_data->host, | |
1656 | channel - 'A'); | |
1da177e4 | 1657 | } |
73a25462 HR |
1658 | break; |
1659 | default: | |
1660 | panic("ahd_send_async: Unexpected async event"); | |
1661 | } | |
1da177e4 LT |
1662 | } |
1663 | ||
73a25462 HR |
1664 | /* |
1665 | * Calls the higher level scsi done function and frees the scb. | |
1666 | */ | |
1667 | void | |
1668 | ahd_done(struct ahd_softc *ahd, struct scb *scb) | |
1da177e4 | 1669 | { |
73a25462 HR |
1670 | struct scsi_cmnd *cmd; |
1671 | struct ahd_linux_device *dev; | |
1da177e4 | 1672 | |
73a25462 HR |
1673 | if ((scb->flags & SCB_ACTIVE) == 0) { |
1674 | printf("SCB %d done'd twice\n", SCB_GET_TAG(scb)); | |
1675 | ahd_dump_card_state(ahd); | |
1676 | panic("Stopping for safety"); | |
1da177e4 | 1677 | } |
73a25462 HR |
1678 | LIST_REMOVE(scb, pending_links); |
1679 | cmd = scb->io_ctx; | |
1680 | dev = scb->platform_data->dev; | |
1681 | dev->active--; | |
1682 | dev->openings++; | |
1683 | if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) { | |
1684 | cmd->result &= ~(CAM_DEV_QFRZN << 16); | |
1685 | dev->qfrozen--; | |
1686 | } | |
1687 | ahd_linux_unmap_scb(ahd, scb); | |
1da177e4 LT |
1688 | |
1689 | /* | |
73a25462 HR |
1690 | * Guard against stale sense data. |
1691 | * The Linux mid-layer assumes that sense | |
1692 | * was retrieved anytime the first byte of | |
1693 | * the sense buffer looks "sane". | |
1da177e4 | 1694 | */ |
73a25462 HR |
1695 | cmd->sense_buffer[0] = 0; |
1696 | if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) { | |
1697 | uint32_t amount_xferred; | |
1da177e4 | 1698 | |
73a25462 HR |
1699 | amount_xferred = |
1700 | ahd_get_transfer_length(scb) - ahd_get_residual(scb); | |
1701 | if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) { | |
1da177e4 | 1702 | #ifdef AHD_DEBUG |
73a25462 HR |
1703 | if ((ahd_debug & AHD_SHOW_MISC) != 0) { |
1704 | ahd_print_path(ahd, scb); | |
1705 | printf("Set CAM_UNCOR_PARITY\n"); | |
1706 | } | |
1da177e4 | 1707 | #endif |
73a25462 HR |
1708 | ahd_set_transaction_status(scb, CAM_UNCOR_PARITY); |
1709 | #ifdef AHD_REPORT_UNDERFLOWS | |
1da177e4 | 1710 | /* |
73a25462 HR |
1711 | * This code is disabled by default as some |
1712 | * clients of the SCSI system do not properly | |
1713 | * initialize the underflow parameter. This | |
1714 | * results in spurious termination of commands | |
1715 | * that complete as expected (e.g. underflow is | |
1716 | * allowed as command can return variable amounts | |
1717 | * of data. | |
1da177e4 | 1718 | */ |
73a25462 HR |
1719 | } else if (amount_xferred < scb->io_ctx->underflow) { |
1720 | u_int i; | |
1da177e4 | 1721 | |
73a25462 HR |
1722 | ahd_print_path(ahd, scb); |
1723 | printf("CDB:"); | |
1724 | for (i = 0; i < scb->io_ctx->cmd_len; i++) | |
1725 | printf(" 0x%x", scb->io_ctx->cmnd[i]); | |
1726 | printf("\n"); | |
1727 | ahd_print_path(ahd, scb); | |
1728 | printf("Saw underflow (%ld of %ld bytes). " | |
1729 | "Treated as error\n", | |
1730 | ahd_get_residual(scb), | |
1731 | ahd_get_transfer_length(scb)); | |
1732 | ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR); | |
1733 | #endif | |
1734 | } else { | |
1735 | ahd_set_transaction_status(scb, CAM_REQ_CMP); | |
1da177e4 | 1736 | } |
73a25462 HR |
1737 | } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { |
1738 | ahd_linux_handle_scsi_status(ahd, cmd->device, scb); | |
1739 | } | |
1da177e4 | 1740 | |
73a25462 HR |
1741 | if (dev->openings == 1 |
1742 | && ahd_get_transaction_status(scb) == CAM_REQ_CMP | |
1743 | && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL) | |
1744 | dev->tag_success_count++; | |
1745 | /* | |
1746 | * Some devices deal with temporary internal resource | |
1747 | * shortages by returning queue full. When the queue | |
1748 | * full occurrs, we throttle back. Slowly try to get | |
1749 | * back to our previous queue depth. | |
1750 | */ | |
1751 | if ((dev->openings + dev->active) < dev->maxtags | |
1752 | && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) { | |
1753 | dev->tag_success_count = 0; | |
1754 | dev->openings++; | |
1755 | } | |
1da177e4 | 1756 | |
73a25462 HR |
1757 | if (dev->active == 0) |
1758 | dev->commands_since_idle_or_otag = 0; | |
1da177e4 | 1759 | |
73a25462 HR |
1760 | if ((scb->flags & SCB_RECOVERY_SCB) != 0) { |
1761 | printf("Recovery SCB completes\n"); | |
1762 | if (ahd_get_transaction_status(scb) == CAM_BDR_SENT | |
1763 | || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED) | |
1764 | ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT); | |
7b22da38 HR |
1765 | |
1766 | if (ahd->platform_data->eh_done) | |
1767 | complete(ahd->platform_data->eh_done); | |
1da177e4 | 1768 | } |
73a25462 HR |
1769 | |
1770 | ahd_free_scb(ahd, scb); | |
1771 | ahd_linux_queue_cmd_complete(ahd, cmd); | |
1da177e4 LT |
1772 | } |
1773 | ||
1774 | static void | |
73a25462 HR |
1775 | ahd_linux_handle_scsi_status(struct ahd_softc *ahd, |
1776 | struct scsi_device *sdev, struct scb *scb) | |
1da177e4 | 1777 | { |
73a25462 HR |
1778 | struct ahd_devinfo devinfo; |
1779 | struct ahd_linux_device *dev = scsi_transport_device_data(sdev); | |
1da177e4 | 1780 | |
73a25462 HR |
1781 | ahd_compile_devinfo(&devinfo, |
1782 | ahd->our_id, | |
1783 | sdev->sdev_target->id, sdev->lun, | |
1784 | sdev->sdev_target->channel == 0 ? 'A' : 'B', | |
1785 | ROLE_INITIATOR); | |
1786 | ||
1787 | /* | |
1788 | * We don't currently trust the mid-layer to | |
1789 | * properly deal with queue full or busy. So, | |
1790 | * when one occurs, we tell the mid-layer to | |
1791 | * unconditionally requeue the command to us | |
1792 | * so that we can retry it ourselves. We also | |
1793 | * implement our own throttling mechanism so | |
1794 | * we don't clobber the device with too many | |
1795 | * commands. | |
1796 | */ | |
1797 | switch (ahd_get_scsi_status(scb)) { | |
1798 | default: | |
1799 | break; | |
1800 | case SCSI_STATUS_CHECK_COND: | |
1801 | case SCSI_STATUS_CMD_TERMINATED: | |
1802 | { | |
1803 | struct scsi_cmnd *cmd; | |
1da177e4 LT |
1804 | |
1805 | /* | |
73a25462 HR |
1806 | * Copy sense information to the OS's cmd |
1807 | * structure if it is available. | |
1da177e4 | 1808 | */ |
73a25462 HR |
1809 | cmd = scb->io_ctx; |
1810 | if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) { | |
1811 | struct scsi_status_iu_header *siu; | |
1812 | u_int sense_size; | |
1813 | u_int sense_offset; | |
1da177e4 | 1814 | |
73a25462 HR |
1815 | if (scb->flags & SCB_SENSE) { |
1816 | sense_size = MIN(sizeof(struct scsi_sense_data) | |
1817 | - ahd_get_sense_residual(scb), | |
1818 | sizeof(cmd->sense_buffer)); | |
1819 | sense_offset = 0; | |
1820 | } else { | |
1821 | /* | |
1822 | * Copy only the sense data into the provided | |
1823 | * buffer. | |
1824 | */ | |
1825 | siu = (struct scsi_status_iu_header *) | |
1826 | scb->sense_data; | |
1827 | sense_size = MIN(scsi_4btoul(siu->sense_length), | |
1828 | sizeof(cmd->sense_buffer)); | |
1829 | sense_offset = SIU_SENSE_OFFSET(siu); | |
1830 | } | |
1da177e4 | 1831 | |
73a25462 HR |
1832 | memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer)); |
1833 | memcpy(cmd->sense_buffer, | |
1834 | ahd_get_sense_buf(ahd, scb) | |
1835 | + sense_offset, sense_size); | |
1836 | cmd->result |= (DRIVER_SENSE << 24); | |
1da177e4 | 1837 | |
1da177e4 | 1838 | #ifdef AHD_DEBUG |
73a25462 HR |
1839 | if (ahd_debug & AHD_SHOW_SENSE) { |
1840 | int i; | |
1da177e4 | 1841 | |
73a25462 HR |
1842 | printf("Copied %d bytes of sense data at %d:", |
1843 | sense_size, sense_offset); | |
1844 | for (i = 0; i < sense_size; i++) { | |
1da177e4 | 1845 | if ((i & 0xF) == 0) |
73a25462 HR |
1846 | printf("\n"); |
1847 | printf("0x%x ", cmd->sense_buffer[i]); | |
1da177e4 LT |
1848 | } |
1849 | printf("\n"); | |
1850 | } | |
1851 | #endif | |
1da177e4 LT |
1852 | } |
1853 | break; | |
73a25462 HR |
1854 | } |
1855 | case SCSI_STATUS_QUEUE_FULL: | |
1856 | /* | |
1857 | * By the time the core driver has returned this | |
1858 | * command, all other commands that were queued | |
1859 | * to us but not the device have been returned. | |
1860 | * This ensures that dev->active is equal to | |
1861 | * the number of commands actually queued to | |
1862 | * the device. | |
1863 | */ | |
1864 | dev->tag_success_count = 0; | |
1865 | if (dev->active != 0) { | |
1da177e4 | 1866 | /* |
73a25462 HR |
1867 | * Drop our opening count to the number |
1868 | * of commands currently outstanding. | |
1da177e4 | 1869 | */ |
73a25462 | 1870 | dev->openings = 0; |
1da177e4 | 1871 | #ifdef AHD_DEBUG |
73a25462 HR |
1872 | if ((ahd_debug & AHD_SHOW_QFULL) != 0) { |
1873 | ahd_print_path(ahd, scb); | |
1874 | printf("Dropping tag count to %d\n", | |
1875 | dev->active); | |
1da177e4 LT |
1876 | } |
1877 | #endif | |
73a25462 | 1878 | if (dev->active == dev->tags_on_last_queuefull) { |
1da177e4 | 1879 | |
73a25462 | 1880 | dev->last_queuefull_same_count++; |
1da177e4 | 1881 | /* |
73a25462 HR |
1882 | * If we repeatedly see a queue full |
1883 | * at the same queue depth, this | |
1884 | * device has a fixed number of tag | |
1885 | * slots. Lock in this tag depth | |
1886 | * so we stop seeing queue fulls from | |
1887 | * this device. | |
1da177e4 | 1888 | */ |
73a25462 HR |
1889 | if (dev->last_queuefull_same_count |
1890 | == AHD_LOCK_TAGS_COUNT) { | |
1891 | dev->maxtags = dev->active; | |
1892 | ahd_print_path(ahd, scb); | |
1893 | printf("Locking max tag count at %d\n", | |
1894 | dev->active); | |
1da177e4 | 1895 | } |
73a25462 HR |
1896 | } else { |
1897 | dev->tags_on_last_queuefull = dev->active; | |
1898 | dev->last_queuefull_same_count = 0; | |
1da177e4 | 1899 | } |
73a25462 HR |
1900 | ahd_set_transaction_status(scb, CAM_REQUEUE_REQ); |
1901 | ahd_set_scsi_status(scb, SCSI_STATUS_OK); | |
f89d0a4e | 1902 | ahd_platform_set_tags(ahd, sdev, &devinfo, |
73a25462 HR |
1903 | (dev->flags & AHD_DEV_Q_BASIC) |
1904 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
1da177e4 LT |
1905 | break; |
1906 | } | |
1da177e4 | 1907 | /* |
73a25462 HR |
1908 | * Drop down to a single opening, and treat this |
1909 | * as if the target returned BUSY SCSI status. | |
1da177e4 | 1910 | */ |
73a25462 | 1911 | dev->openings = 1; |
f89d0a4e | 1912 | ahd_platform_set_tags(ahd, sdev, &devinfo, |
73a25462 HR |
1913 | (dev->flags & AHD_DEV_Q_BASIC) |
1914 | ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED); | |
1915 | ahd_set_scsi_status(scb, SCSI_STATUS_BUSY); | |
1916 | } | |
1da177e4 LT |
1917 | } |
1918 | ||
73a25462 HR |
1919 | static void |
1920 | ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd) | |
1da177e4 | 1921 | { |
6902f416 HR |
1922 | int status; |
1923 | int new_status = DID_OK; | |
1924 | int do_fallback = 0; | |
1925 | int scsi_status; | |
1926 | ||
1da177e4 | 1927 | /* |
73a25462 HR |
1928 | * Map CAM error codes into Linux Error codes. We |
1929 | * avoid the conversion so that the DV code has the | |
1930 | * full error information available when making | |
1931 | * state change decisions. | |
1da177e4 | 1932 | */ |
6902f416 HR |
1933 | |
1934 | status = ahd_cmd_get_transaction_status(cmd); | |
1935 | switch (status) { | |
1936 | case CAM_REQ_INPROG: | |
1937 | case CAM_REQ_CMP: | |
1938 | new_status = DID_OK; | |
1939 | break; | |
1940 | case CAM_AUTOSENSE_FAIL: | |
1941 | new_status = DID_ERROR; | |
1942 | /* Fallthrough */ | |
1943 | case CAM_SCSI_STATUS_ERROR: | |
1944 | scsi_status = ahd_cmd_get_scsi_status(cmd); | |
1945 | ||
1946 | switch(scsi_status) { | |
1947 | case SCSI_STATUS_CMD_TERMINATED: | |
1948 | case SCSI_STATUS_CHECK_COND: | |
1949 | if ((cmd->result >> 24) != DRIVER_SENSE) { | |
1950 | do_fallback = 1; | |
1951 | } else { | |
1952 | struct scsi_sense_data *sense; | |
1953 | ||
1954 | sense = (struct scsi_sense_data *) | |
1955 | &cmd->sense_buffer; | |
1956 | if (sense->extra_len >= 5 && | |
1957 | (sense->add_sense_code == 0x47 | |
1958 | || sense->add_sense_code == 0x48)) | |
1959 | do_fallback = 1; | |
1960 | } | |
73a25462 HR |
1961 | break; |
1962 | default: | |
73a25462 HR |
1963 | break; |
1964 | } | |
6902f416 HR |
1965 | break; |
1966 | case CAM_REQ_ABORTED: | |
1967 | new_status = DID_ABORT; | |
1968 | break; | |
1969 | case CAM_BUSY: | |
1970 | new_status = DID_BUS_BUSY; | |
1971 | break; | |
1972 | case CAM_REQ_INVALID: | |
1973 | case CAM_PATH_INVALID: | |
1974 | new_status = DID_BAD_TARGET; | |
1975 | break; | |
1976 | case CAM_SEL_TIMEOUT: | |
1977 | new_status = DID_NO_CONNECT; | |
1978 | break; | |
1979 | case CAM_SCSI_BUS_RESET: | |
1980 | case CAM_BDR_SENT: | |
1981 | new_status = DID_RESET; | |
1982 | break; | |
1983 | case CAM_UNCOR_PARITY: | |
1984 | new_status = DID_PARITY; | |
1985 | do_fallback = 1; | |
1986 | break; | |
1987 | case CAM_CMD_TIMEOUT: | |
1988 | new_status = DID_TIME_OUT; | |
1989 | do_fallback = 1; | |
1990 | break; | |
1991 | case CAM_REQ_CMP_ERR: | |
1992 | case CAM_UNEXP_BUSFREE: | |
1993 | case CAM_DATA_RUN_ERR: | |
1994 | new_status = DID_ERROR; | |
1995 | do_fallback = 1; | |
1996 | break; | |
1997 | case CAM_UA_ABORT: | |
1998 | case CAM_NO_HBA: | |
1999 | case CAM_SEQUENCE_FAIL: | |
2000 | case CAM_CCB_LEN_ERR: | |
2001 | case CAM_PROVIDE_FAIL: | |
2002 | case CAM_REQ_TERMIO: | |
2003 | case CAM_UNREC_HBA_ERROR: | |
2004 | case CAM_REQ_TOO_BIG: | |
2005 | new_status = DID_ERROR; | |
2006 | break; | |
2007 | case CAM_REQUEUE_REQ: | |
2008 | new_status = DID_REQUEUE; | |
2009 | break; | |
2010 | default: | |
2011 | /* We should never get here */ | |
2012 | new_status = DID_ERROR; | |
2013 | break; | |
2014 | } | |
73a25462 | 2015 | |
6902f416 HR |
2016 | if (do_fallback) { |
2017 | printf("%s: device overrun (status %x) on %d:%d:%d\n", | |
2018 | ahd_name(ahd), status, cmd->device->channel, | |
2019 | cmd->device->id, cmd->device->lun); | |
73a25462 HR |
2020 | } |
2021 | ||
6902f416 HR |
2022 | ahd_cmd_set_transaction_status(cmd, new_status); |
2023 | ||
73a25462 | 2024 | cmd->scsi_done(cmd); |
1da177e4 LT |
2025 | } |
2026 | ||
1da177e4 | 2027 | void |
73a25462 | 2028 | ahd_freeze_simq(struct ahd_softc *ahd) |
1da177e4 | 2029 | { |
7b22da38 | 2030 | scsi_block_requests(ahd->platform_data->host); |
1da177e4 LT |
2031 | } |
2032 | ||
1da177e4 | 2033 | void |
73a25462 | 2034 | ahd_release_simq(struct ahd_softc *ahd) |
1da177e4 | 2035 | { |
7b22da38 | 2036 | scsi_unblock_requests(ahd->platform_data->host); |
73a25462 | 2037 | } |
1da177e4 | 2038 | |
73a25462 | 2039 | static int |
6902f416 | 2040 | ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd) |
73a25462 HR |
2041 | { |
2042 | struct ahd_softc *ahd; | |
2043 | struct ahd_linux_device *dev; | |
2044 | struct scb *pending_scb; | |
2045 | u_int saved_scbptr; | |
2046 | u_int active_scbptr; | |
2047 | u_int last_phase; | |
2048 | u_int saved_scsiid; | |
2049 | u_int cdb_byte; | |
2050 | int retval; | |
2051 | int was_paused; | |
2052 | int paused; | |
2053 | int wait; | |
2054 | int disconnected; | |
2055 | ahd_mode_state saved_modes; | |
4065a413 | 2056 | unsigned long flags; |
73a25462 HR |
2057 | |
2058 | pending_scb = NULL; | |
2059 | paused = FALSE; | |
2060 | wait = FALSE; | |
2061 | ahd = *(struct ahd_softc **)cmd->device->host->hostdata; | |
2062 | ||
017560fc | 2063 | scmd_printk(KERN_INFO, cmd, |
6902f416 | 2064 | "Attempting to queue an ABORT message:"); |
73a25462 HR |
2065 | |
2066 | printf("CDB:"); | |
2067 | for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++) | |
2068 | printf(" 0x%x", cmd->cmnd[cdb_byte]); | |
2069 | printf("\n"); | |
2070 | ||
4065a413 | 2071 | ahd_lock(ahd, &flags); |
1da177e4 | 2072 | |
1da177e4 | 2073 | /* |
73a25462 HR |
2074 | * First determine if we currently own this command. |
2075 | * Start by searching the device queue. If not found | |
2076 | * there, check the pending_scb list. If not found | |
2077 | * at all, and the system wanted us to just abort the | |
2078 | * command, return success. | |
1da177e4 | 2079 | */ |
73a25462 HR |
2080 | dev = scsi_transport_device_data(cmd->device); |
2081 | ||
2082 | if (dev == NULL) { | |
2083 | /* | |
2084 | * No target device for this command exists, | |
2085 | * so we must not still own the command. | |
2086 | */ | |
017560fc | 2087 | scmd_printk(KERN_INFO, cmd, "Is not an active device\n"); |
73a25462 HR |
2088 | retval = SUCCESS; |
2089 | goto no_cmd; | |
2090 | } | |
1da177e4 | 2091 | |
1da177e4 | 2092 | /* |
73a25462 | 2093 | * See if we can find a matching cmd in the pending list. |
1da177e4 | 2094 | */ |
73a25462 HR |
2095 | LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) { |
2096 | if (pending_scb->io_ctx == cmd) | |
2097 | break; | |
1da177e4 LT |
2098 | } |
2099 | ||
73a25462 | 2100 | if (pending_scb == NULL) { |
017560fc | 2101 | scmd_printk(KERN_INFO, cmd, "Command not found\n"); |
73a25462 | 2102 | goto no_cmd; |
1da177e4 | 2103 | } |
1da177e4 | 2104 | |
73a25462 HR |
2105 | if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) { |
2106 | /* | |
2107 | * We can't queue two recovery actions using the same SCB | |
2108 | */ | |
2109 | retval = FAILED; | |
2110 | goto done; | |
2111 | } | |
1da177e4 | 2112 | |
1da177e4 | 2113 | /* |
73a25462 HR |
2114 | * Ensure that the card doesn't do anything |
2115 | * behind our back. Also make sure that we | |
2116 | * didn't "just" miss an interrupt that would | |
2117 | * affect this cmd. | |
1da177e4 | 2118 | */ |
73a25462 HR |
2119 | was_paused = ahd_is_paused(ahd); |
2120 | ahd_pause_and_flushwork(ahd); | |
2121 | paused = TRUE; | |
1da177e4 | 2122 | |
73a25462 | 2123 | if ((pending_scb->flags & SCB_ACTIVE) == 0) { |
017560fc | 2124 | scmd_printk(KERN_INFO, cmd, "Command already completed\n"); |
73a25462 HR |
2125 | goto no_cmd; |
2126 | } | |
1da177e4 | 2127 | |
73a25462 HR |
2128 | printf("%s: At time of recovery, card was %spaused\n", |
2129 | ahd_name(ahd), was_paused ? "" : "not "); | |
2130 | ahd_dump_card_state(ahd); | |
1da177e4 | 2131 | |
73a25462 | 2132 | disconnected = TRUE; |
6902f416 HR |
2133 | if (ahd_search_qinfifo(ahd, cmd->device->id, |
2134 | cmd->device->channel + 'A', | |
2135 | cmd->device->lun, | |
2136 | pending_scb->hscb->tag, | |
2137 | ROLE_INITIATOR, CAM_REQ_ABORTED, | |
2138 | SEARCH_COMPLETE) > 0) { | |
2139 | printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n", | |
2140 | ahd_name(ahd), cmd->device->channel, | |
2141 | cmd->device->id, cmd->device->lun); | |
2142 | retval = SUCCESS; | |
2143 | goto done; | |
73a25462 | 2144 | } |
1da177e4 | 2145 | |
73a25462 HR |
2146 | saved_modes = ahd_save_modes(ahd); |
2147 | ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); | |
2148 | last_phase = ahd_inb(ahd, LASTPHASE); | |
2149 | saved_scbptr = ahd_get_scbptr(ahd); | |
2150 | active_scbptr = saved_scbptr; | |
6902f416 | 2151 | if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) { |
73a25462 | 2152 | struct scb *bus_scb; |
1da177e4 | 2153 | |
73a25462 HR |
2154 | bus_scb = ahd_lookup_scb(ahd, active_scbptr); |
2155 | if (bus_scb == pending_scb) | |
2156 | disconnected = FALSE; | |
1da177e4 | 2157 | } |
73a25462 HR |
2158 | |
2159 | /* | |
2160 | * At this point, pending_scb is the scb associated with the | |
2161 | * passed in command. That command is currently active on the | |
2162 | * bus or is in the disconnected state. | |
2163 | */ | |
2164 | saved_scsiid = ahd_inb(ahd, SAVED_SCSIID); | |
6902f416 HR |
2165 | if (last_phase != P_BUSFREE |
2166 | && SCB_GET_TAG(pending_scb) == active_scbptr) { | |
73a25462 | 2167 | |
1da177e4 | 2168 | /* |
73a25462 HR |
2169 | * We're active on the bus, so assert ATN |
2170 | * and hope that the target responds. | |
1da177e4 | 2171 | */ |
73a25462 | 2172 | pending_scb = ahd_lookup_scb(ahd, active_scbptr); |
6902f416 | 2173 | pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
73a25462 HR |
2174 | ahd_outb(ahd, MSG_OUT, HOST_MSG); |
2175 | ahd_outb(ahd, SCSISIGO, last_phase|ATNO); | |
6902f416 | 2176 | scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n"); |
73a25462 HR |
2177 | wait = TRUE; |
2178 | } else if (disconnected) { | |
2179 | ||
2180 | /* | |
2181 | * Actually re-queue this SCB in an attempt | |
2182 | * to select the device before it reconnects. | |
2183 | */ | |
6902f416 | 2184 | pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT; |
73a25462 HR |
2185 | ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb)); |
2186 | pending_scb->hscb->cdb_len = 0; | |
2187 | pending_scb->hscb->task_attribute = 0; | |
2188 | pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK; | |
2189 | ||
2190 | if ((pending_scb->flags & SCB_PACKETIZED) != 0) { | |
1da177e4 | 2191 | /* |
73a25462 HR |
2192 | * Mark the SCB has having an outstanding |
2193 | * task management function. Should the command | |
2194 | * complete normally before the task management | |
2195 | * function can be sent, the host will be notified | |
2196 | * to abort our requeued SCB. | |
1da177e4 | 2197 | */ |
73a25462 HR |
2198 | ahd_outb(ahd, SCB_TASK_MANAGEMENT, |
2199 | pending_scb->hscb->task_management); | |
2200 | } else { | |
2201 | /* | |
2202 | * If non-packetized, set the MK_MESSAGE control | |
2203 | * bit indicating that we desire to send a message. | |
2204 | * We also set the disconnected flag since there is | |
2205 | * no guarantee that our SCB control byte matches | |
2206 | * the version on the card. We don't want the | |
2207 | * sequencer to abort the command thinking an | |
2208 | * unsolicited reselection occurred. | |
2209 | */ | |
2210 | pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED; | |
2211 | ||
2212 | /* | |
2213 | * The sequencer will never re-reference the | |
2214 | * in-core SCB. To make sure we are notified | |
2215 | * during reslection, set the MK_MESSAGE flag in | |
2216 | * the card's copy of the SCB. | |
2217 | */ | |
2218 | ahd_outb(ahd, SCB_CONTROL, | |
2219 | ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE); | |
1da177e4 | 2220 | } |
73a25462 | 2221 | |
1da177e4 | 2222 | /* |
73a25462 HR |
2223 | * Clear out any entries in the QINFIFO first |
2224 | * so we are the next SCB for this target | |
2225 | * to run. | |
1da177e4 | 2226 | */ |
73a25462 HR |
2227 | ahd_search_qinfifo(ahd, cmd->device->id, |
2228 | cmd->device->channel + 'A', cmd->device->lun, | |
2229 | SCB_LIST_NULL, ROLE_INITIATOR, | |
2230 | CAM_REQUEUE_REQ, SEARCH_COMPLETE); | |
2231 | ahd_qinfifo_requeue_tail(ahd, pending_scb); | |
2232 | ahd_set_scbptr(ahd, saved_scbptr); | |
2233 | ahd_print_path(ahd, pending_scb); | |
2234 | printf("Device is disconnected, re-queuing SCB\n"); | |
2235 | wait = TRUE; | |
2236 | } else { | |
017560fc | 2237 | scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n"); |
73a25462 HR |
2238 | retval = FAILED; |
2239 | goto done; | |
1da177e4 | 2240 | } |
1da177e4 | 2241 | |
73a25462 | 2242 | no_cmd: |
1da177e4 | 2243 | /* |
73a25462 HR |
2244 | * Our assumption is that if we don't have the command, no |
2245 | * recovery action was required, so we return success. Again, | |
2246 | * the semantics of the mid-layer recovery engine are not | |
2247 | * well defined, so this may change in time. | |
1da177e4 | 2248 | */ |
73a25462 HR |
2249 | retval = SUCCESS; |
2250 | done: | |
2251 | if (paused) | |
2252 | ahd_unpause(ahd); | |
2253 | if (wait) { | |
6e9a4738 | 2254 | DECLARE_COMPLETION_ONSTACK(done); |
1da177e4 | 2255 | |
7b22da38 | 2256 | ahd->platform_data->eh_done = &done; |
4065a413 CH |
2257 | ahd_unlock(ahd, &flags); |
2258 | ||
11668bb6 | 2259 | printf("%s: Recovery code sleeping\n", ahd_name(ahd)); |
7b22da38 HR |
2260 | if (!wait_for_completion_timeout(&done, 5 * HZ)) { |
2261 | ahd_lock(ahd, &flags); | |
2262 | ahd->platform_data->eh_done = NULL; | |
2263 | ahd_unlock(ahd, &flags); | |
11668bb6 HR |
2264 | printf("%s: Timer Expired (active %d)\n", |
2265 | ahd_name(ahd), dev->active); | |
73a25462 | 2266 | retval = FAILED; |
1da177e4 | 2267 | } |
7b22da38 | 2268 | printf("Recovery code awake\n"); |
eb221849 HR |
2269 | } else |
2270 | ahd_unlock(ahd, &flags); | |
2271 | ||
7b22da38 HR |
2272 | if (retval != SUCCESS) |
2273 | printf("%s: Command abort returning 0x%x\n", | |
2274 | ahd_name(ahd), retval); | |
2275 | ||
2276 | return retval; | |
1da177e4 LT |
2277 | } |
2278 | ||
73a25462 | 2279 | static void ahd_linux_set_width(struct scsi_target *starget, int width) |
1da177e4 | 2280 | { |
73a25462 HR |
2281 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2282 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2283 | struct ahd_devinfo devinfo; | |
2284 | unsigned long flags; | |
1da177e4 | 2285 | |
73a25462 HR |
2286 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2287 | starget->channel + 'A', ROLE_INITIATOR); | |
2288 | ahd_lock(ahd, &flags); | |
2289 | ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE); | |
2290 | ahd_unlock(ahd, &flags); | |
2291 | } | |
2292 | ||
2293 | static void ahd_linux_set_period(struct scsi_target *starget, int period) | |
2294 | { | |
2295 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2296 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2297 | struct ahd_tmode_tstate *tstate; | |
2298 | struct ahd_initiator_tinfo *tinfo | |
2299 | = ahd_fetch_transinfo(ahd, | |
2300 | starget->channel + 'A', | |
2301 | shost->this_id, starget->id, &tstate); | |
2302 | struct ahd_devinfo devinfo; | |
2303 | unsigned int ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 | 2304 | unsigned int dt; |
73a25462 HR |
2305 | unsigned long flags; |
2306 | unsigned long offset = tinfo->goal.offset; | |
1da177e4 | 2307 | |
a4b53a11 HR |
2308 | #ifdef AHD_DEBUG |
2309 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2310 | printf("%s: set period to %d\n", ahd_name(ahd), period); | |
2311 | #endif | |
73a25462 HR |
2312 | if (offset == 0) |
2313 | offset = MAX_OFFSET; | |
1da177e4 | 2314 | |
73a25462 HR |
2315 | if (period < 8) |
2316 | period = 8; | |
2317 | if (period < 10) { | |
2318 | ppr_options |= MSG_EXT_PPR_DT_REQ; | |
2319 | if (period == 8) | |
2320 | ppr_options |= MSG_EXT_PPR_IU_REQ; | |
1da177e4 LT |
2321 | } |
2322 | ||
a4b53a11 HR |
2323 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
2324 | ||
73a25462 HR |
2325 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2326 | starget->channel + 'A', ROLE_INITIATOR); | |
1da177e4 | 2327 | |
73a25462 HR |
2328 | /* all PPR requests apart from QAS require wide transfers */ |
2329 | if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) { | |
2330 | if (spi_width(starget) == 0) | |
2331 | ppr_options &= MSG_EXT_PPR_QAS_REQ; | |
1da177e4 | 2332 | } |
73a25462 | 2333 | |
a4b53a11 HR |
2334 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2335 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2336 | ||
73a25462 HR |
2337 | ahd_lock(ahd, &flags); |
2338 | ahd_set_syncrate(ahd, &devinfo, period, offset, | |
2339 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2340 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2341 | } |
2342 | ||
73a25462 | 2343 | static void ahd_linux_set_offset(struct scsi_target *starget, int offset) |
1da177e4 | 2344 | { |
73a25462 HR |
2345 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2346 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2347 | struct ahd_tmode_tstate *tstate; | |
2348 | struct ahd_initiator_tinfo *tinfo | |
2349 | = ahd_fetch_transinfo(ahd, | |
2350 | starget->channel + 'A', | |
2351 | shost->this_id, starget->id, &tstate); | |
2352 | struct ahd_devinfo devinfo; | |
2353 | unsigned int ppr_options = 0; | |
2354 | unsigned int period = 0; | |
a4b53a11 | 2355 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; |
73a25462 HR |
2356 | unsigned long flags; |
2357 | ||
a4b53a11 HR |
2358 | #ifdef AHD_DEBUG |
2359 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2360 | printf("%s: set offset to %d\n", ahd_name(ahd), offset); | |
2361 | #endif | |
2362 | ||
73a25462 HR |
2363 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2364 | starget->channel + 'A', ROLE_INITIATOR); | |
2365 | if (offset != 0) { | |
2366 | period = tinfo->goal.period; | |
2367 | ppr_options = tinfo->goal.ppr_options; | |
a4b53a11 HR |
2368 | ahd_find_syncrate(ahd, &period, &ppr_options, |
2369 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
1da177e4 | 2370 | } |
a4b53a11 | 2371 | |
73a25462 HR |
2372 | ahd_lock(ahd, &flags); |
2373 | ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options, | |
2374 | AHD_TRANS_GOAL, FALSE); | |
2375 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2376 | } |
2377 | ||
73a25462 | 2378 | static void ahd_linux_set_dt(struct scsi_target *starget, int dt) |
1da177e4 | 2379 | { |
73a25462 HR |
2380 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2381 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2382 | struct ahd_tmode_tstate *tstate; | |
2383 | struct ahd_initiator_tinfo *tinfo | |
2384 | = ahd_fetch_transinfo(ahd, | |
2385 | starget->channel + 'A', | |
2386 | shost->this_id, starget->id, &tstate); | |
2387 | struct ahd_devinfo devinfo; | |
2388 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2389 | & ~MSG_EXT_PPR_DT_REQ; | |
2390 | unsigned int period = tinfo->goal.period; | |
52b5cfb3 | 2391 | unsigned int width = tinfo->goal.width; |
73a25462 HR |
2392 | unsigned long flags; |
2393 | ||
a4b53a11 HR |
2394 | #ifdef AHD_DEBUG |
2395 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2396 | printf("%s: %s DT\n", ahd_name(ahd), | |
2397 | dt ? "enabling" : "disabling"); | |
2398 | #endif | |
73a25462 HR |
2399 | if (dt) { |
2400 | ppr_options |= MSG_EXT_PPR_DT_REQ; | |
52b5cfb3 HR |
2401 | if (!width) |
2402 | ahd_linux_set_width(starget, 1); | |
a4b53a11 HR |
2403 | } else { |
2404 | if (period <= 9) | |
2405 | period = 10; /* If resetting DT, period must be >= 25ns */ | |
2406 | /* IU is invalid without DT set */ | |
2407 | ppr_options &= ~MSG_EXT_PPR_IU_REQ; | |
2408 | } | |
73a25462 HR |
2409 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, |
2410 | starget->channel + 'A', ROLE_INITIATOR); | |
2411 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2412 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2413 | |
73a25462 HR |
2414 | ahd_lock(ahd, &flags); |
2415 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2416 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2417 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2418 | } |
2419 | ||
73a25462 | 2420 | static void ahd_linux_set_qas(struct scsi_target *starget, int qas) |
1da177e4 | 2421 | { |
73a25462 HR |
2422 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2423 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2424 | struct ahd_tmode_tstate *tstate; | |
2425 | struct ahd_initiator_tinfo *tinfo | |
2426 | = ahd_fetch_transinfo(ahd, | |
2427 | starget->channel + 'A', | |
2428 | shost->this_id, starget->id, &tstate); | |
2429 | struct ahd_devinfo devinfo; | |
2430 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2431 | & ~MSG_EXT_PPR_QAS_REQ; | |
2432 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2433 | unsigned int dt; |
73a25462 HR |
2434 | unsigned long flags; |
2435 | ||
a4b53a11 HR |
2436 | #ifdef AHD_DEBUG |
2437 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2438 | printf("%s: %s QAS\n", ahd_name(ahd), | |
2439 | qas ? "enabling" : "disabling"); | |
2440 | #endif | |
2441 | ||
2442 | if (qas) { | |
2443 | ppr_options |= MSG_EXT_PPR_QAS_REQ; | |
2444 | } | |
2445 | ||
2446 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2447 | |
2448 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2449 | starget->channel + 'A', ROLE_INITIATOR); | |
2450 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2451 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2452 | |
73a25462 HR |
2453 | ahd_lock(ahd, &flags); |
2454 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2455 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2456 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2457 | } |
2458 | ||
73a25462 | 2459 | static void ahd_linux_set_iu(struct scsi_target *starget, int iu) |
1da177e4 | 2460 | { |
73a25462 HR |
2461 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); |
2462 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2463 | struct ahd_tmode_tstate *tstate; | |
2464 | struct ahd_initiator_tinfo *tinfo | |
2465 | = ahd_fetch_transinfo(ahd, | |
2466 | starget->channel + 'A', | |
2467 | shost->this_id, starget->id, &tstate); | |
2468 | struct ahd_devinfo devinfo; | |
2469 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2470 | & ~MSG_EXT_PPR_IU_REQ; | |
2471 | unsigned int period = tinfo->goal.period; | |
a4b53a11 | 2472 | unsigned int dt; |
73a25462 HR |
2473 | unsigned long flags; |
2474 | ||
a4b53a11 HR |
2475 | #ifdef AHD_DEBUG |
2476 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2477 | printf("%s: %s IU\n", ahd_name(ahd), | |
2478 | iu ? "enabling" : "disabling"); | |
2479 | #endif | |
2480 | ||
2481 | if (iu) { | |
73a25462 | 2482 | ppr_options |= MSG_EXT_PPR_IU_REQ; |
a4b53a11 HR |
2483 | ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */ |
2484 | } | |
2485 | ||
2486 | dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
73a25462 HR |
2487 | |
2488 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2489 | starget->channel + 'A', ROLE_INITIATOR); | |
2490 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2491 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2492 | |
73a25462 HR |
2493 | ahd_lock(ahd, &flags); |
2494 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2495 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2496 | ahd_unlock(ahd, &flags); | |
2497 | } | |
1da177e4 | 2498 | |
73a25462 HR |
2499 | static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm) |
2500 | { | |
2501 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2502 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2503 | struct ahd_tmode_tstate *tstate; | |
2504 | struct ahd_initiator_tinfo *tinfo | |
2505 | = ahd_fetch_transinfo(ahd, | |
2506 | starget->channel + 'A', | |
2507 | shost->this_id, starget->id, &tstate); | |
2508 | struct ahd_devinfo devinfo; | |
2509 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2510 | & ~MSG_EXT_PPR_RD_STRM; | |
2511 | unsigned int period = tinfo->goal.period; | |
2512 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2513 | unsigned long flags; | |
2514 | ||
a4b53a11 HR |
2515 | #ifdef AHD_DEBUG |
2516 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2517 | printf("%s: %s Read Streaming\n", ahd_name(ahd), | |
2518 | rdstrm ? "enabling" : "disabling"); | |
2519 | #endif | |
2520 | ||
73a25462 HR |
2521 | if (rdstrm) |
2522 | ppr_options |= MSG_EXT_PPR_RD_STRM; | |
2523 | ||
2524 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2525 | starget->channel + 'A', ROLE_INITIATOR); | |
2526 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2527 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
a4b53a11 | 2528 | |
a4b53a11 HR |
2529 | ahd_lock(ahd, &flags); |
2530 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2531 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2532 | ahd_unlock(ahd, &flags); | |
2533 | } | |
2534 | ||
2535 | static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow) | |
2536 | { | |
2537 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2538 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2539 | struct ahd_tmode_tstate *tstate; | |
2540 | struct ahd_initiator_tinfo *tinfo | |
2541 | = ahd_fetch_transinfo(ahd, | |
2542 | starget->channel + 'A', | |
2543 | shost->this_id, starget->id, &tstate); | |
2544 | struct ahd_devinfo devinfo; | |
2545 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2546 | & ~MSG_EXT_PPR_WR_FLOW; | |
2547 | unsigned int period = tinfo->goal.period; | |
2548 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2549 | unsigned long flags; | |
2550 | ||
2551 | #ifdef AHD_DEBUG | |
2552 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2553 | printf("%s: %s Write Flow Control\n", ahd_name(ahd), | |
2554 | wrflow ? "enabling" : "disabling"); | |
2555 | #endif | |
2556 | ||
2557 | if (wrflow) | |
2558 | ppr_options |= MSG_EXT_PPR_WR_FLOW; | |
2559 | ||
2560 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2561 | starget->channel + 'A', ROLE_INITIATOR); | |
2562 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2563 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2564 | ||
a4b53a11 HR |
2565 | ahd_lock(ahd, &flags); |
2566 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2567 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2568 | ahd_unlock(ahd, &flags); | |
2569 | } | |
2570 | ||
2571 | static void ahd_linux_set_rti(struct scsi_target *starget, int rti) | |
2572 | { | |
2573 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2574 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2575 | struct ahd_tmode_tstate *tstate; | |
2576 | struct ahd_initiator_tinfo *tinfo | |
2577 | = ahd_fetch_transinfo(ahd, | |
2578 | starget->channel + 'A', | |
2579 | shost->this_id, starget->id, &tstate); | |
2580 | struct ahd_devinfo devinfo; | |
2581 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2582 | & ~MSG_EXT_PPR_RTI; | |
2583 | unsigned int period = tinfo->goal.period; | |
2584 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2585 | unsigned long flags; | |
2586 | ||
2587 | if ((ahd->features & AHD_RTI) == 0) { | |
2588 | #ifdef AHD_DEBUG | |
2589 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2590 | printf("%s: RTI not available\n", ahd_name(ahd)); | |
2591 | #endif | |
2592 | return; | |
2593 | } | |
2594 | ||
2595 | #ifdef AHD_DEBUG | |
2596 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2597 | printf("%s: %s RTI\n", ahd_name(ahd), | |
2598 | rti ? "enabling" : "disabling"); | |
2599 | #endif | |
2600 | ||
2601 | if (rti) | |
2602 | ppr_options |= MSG_EXT_PPR_RTI; | |
2603 | ||
2604 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2605 | starget->channel + 'A', ROLE_INITIATOR); | |
2606 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2607 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2608 | ||
a4b53a11 HR |
2609 | ahd_lock(ahd, &flags); |
2610 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2611 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2612 | ahd_unlock(ahd, &flags); | |
2613 | } | |
2614 | ||
2615 | static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) | |
2616 | { | |
2617 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2618 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2619 | struct ahd_tmode_tstate *tstate; | |
2620 | struct ahd_initiator_tinfo *tinfo | |
2621 | = ahd_fetch_transinfo(ahd, | |
2622 | starget->channel + 'A', | |
2623 | shost->this_id, starget->id, &tstate); | |
2624 | struct ahd_devinfo devinfo; | |
2625 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2626 | & ~MSG_EXT_PPR_PCOMP_EN; | |
2627 | unsigned int period = tinfo->goal.period; | |
2628 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2629 | unsigned long flags; | |
2630 | ||
2631 | #ifdef AHD_DEBUG | |
2632 | if ((ahd_debug & AHD_SHOW_DV) != 0) | |
2633 | printf("%s: %s Precompensation\n", ahd_name(ahd), | |
2634 | pcomp ? "Enable" : "Disable"); | |
2635 | #endif | |
2636 | ||
2637 | if (pcomp) | |
2638 | ppr_options |= MSG_EXT_PPR_PCOMP_EN; | |
2639 | ||
2640 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2641 | starget->channel + 'A', ROLE_INITIATOR); | |
2642 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2643 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2644 | ||
73a25462 HR |
2645 | ahd_lock(ahd, &flags); |
2646 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2647 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2648 | ahd_unlock(ahd, &flags); | |
1da177e4 LT |
2649 | } |
2650 | ||
88ff29a4 JB |
2651 | static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold) |
2652 | { | |
2653 | struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); | |
2654 | struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata); | |
2655 | struct ahd_tmode_tstate *tstate; | |
2656 | struct ahd_initiator_tinfo *tinfo | |
2657 | = ahd_fetch_transinfo(ahd, | |
2658 | starget->channel + 'A', | |
2659 | shost->this_id, starget->id, &tstate); | |
2660 | struct ahd_devinfo devinfo; | |
2661 | unsigned int ppr_options = tinfo->goal.ppr_options | |
2662 | & ~MSG_EXT_PPR_HOLD_MCS; | |
2663 | unsigned int period = tinfo->goal.period; | |
2664 | unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ; | |
2665 | unsigned long flags; | |
2666 | ||
2667 | if (hold) | |
2668 | ppr_options |= MSG_EXT_PPR_HOLD_MCS; | |
2669 | ||
2670 | ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, | |
2671 | starget->channel + 'A', ROLE_INITIATOR); | |
2672 | ahd_find_syncrate(ahd, &period, &ppr_options, | |
2673 | dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2); | |
2674 | ||
2675 | ahd_lock(ahd, &flags); | |
2676 | ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset, | |
2677 | ppr_options, AHD_TRANS_GOAL, FALSE); | |
2678 | ahd_unlock(ahd, &flags); | |
2679 | } | |
2680 | ||
2681 | ||
2682 | ||
73a25462 HR |
2683 | static struct spi_function_template ahd_linux_transport_functions = { |
2684 | .set_offset = ahd_linux_set_offset, | |
2685 | .show_offset = 1, | |
2686 | .set_period = ahd_linux_set_period, | |
2687 | .show_period = 1, | |
2688 | .set_width = ahd_linux_set_width, | |
2689 | .show_width = 1, | |
2690 | .set_dt = ahd_linux_set_dt, | |
2691 | .show_dt = 1, | |
2692 | .set_iu = ahd_linux_set_iu, | |
2693 | .show_iu = 1, | |
2694 | .set_qas = ahd_linux_set_qas, | |
2695 | .show_qas = 1, | |
2696 | .set_rd_strm = ahd_linux_set_rd_strm, | |
2697 | .show_rd_strm = 1, | |
a4b53a11 HR |
2698 | .set_wr_flow = ahd_linux_set_wr_flow, |
2699 | .show_wr_flow = 1, | |
2700 | .set_rti = ahd_linux_set_rti, | |
2701 | .show_rti = 1, | |
2702 | .set_pcomp_en = ahd_linux_set_pcomp_en, | |
2703 | .show_pcomp_en = 1, | |
88ff29a4 JB |
2704 | .set_hold_mcs = ahd_linux_set_hold_mcs, |
2705 | .show_hold_mcs = 1, | |
73a25462 HR |
2706 | }; |
2707 | ||
1da177e4 LT |
2708 | static int __init |
2709 | ahd_linux_init(void) | |
2710 | { | |
85a46523 CH |
2711 | int error = 0; |
2712 | ||
2713 | /* | |
2714 | * If we've been passed any parameters, process them now. | |
2715 | */ | |
2716 | if (aic79xx) | |
2717 | aic79xx_setup(aic79xx); | |
2718 | ||
2719 | ahd_linux_transport_template = | |
2720 | spi_attach_transport(&ahd_linux_transport_functions); | |
73a25462 HR |
2721 | if (!ahd_linux_transport_template) |
2722 | return -ENODEV; | |
85a46523 | 2723 | |
73a25462 HR |
2724 | scsi_transport_reserve_device(ahd_linux_transport_template, |
2725 | sizeof(struct ahd_linux_device)); | |
a80b3424 | 2726 | |
85a46523 CH |
2727 | error = ahd_linux_pci_init(); |
2728 | if (error) | |
2729 | spi_release_transport(ahd_linux_transport_template); | |
2730 | return error; | |
1da177e4 LT |
2731 | } |
2732 | ||
2733 | static void __exit | |
2734 | ahd_linux_exit(void) | |
2735 | { | |
1da177e4 | 2736 | ahd_linux_pci_exit(); |
73a25462 | 2737 | spi_release_transport(ahd_linux_transport_template); |
1da177e4 LT |
2738 | } |
2739 | ||
2740 | module_init(ahd_linux_init); | |
2741 | module_exit(ahd_linux_exit); |