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[SCSI] add SCSI_UNKNOWN and LUN transfer limit restrictions
[deliverable/linux.git] / drivers / scsi / aic7xxx / aic79xx_osm.c
CommitLineData
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		 49static 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 */
85typedef 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.
123adapter_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 */
153static 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 */
178struct 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
196static 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
222void
223ahd_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 */
243static uint32_t aic79xx_no_reset;
244
245/*
246 * Certain PCI motherboards will scan PCI devices from highest to lowest,
247 * others scan from lowest to highest, and they tend to do all kinds of
248 * strange things when they come into contact with PCI bridge chips. The
249 * net result of all this is that the PCI card that is actually used to boot
250 * the machine is very hard to detect. Most motherboards go from lowest
251 * PCI slot number to highest, and the first SCSI controller found is the
252 * one you boot from. The only exceptions to this are when a controller
253 * has its BIOS disabled. So, we by default sort all of our SCSI controllers
254 * from lowest PCI slot number to highest PCI slot number. We also force
255 * all controllers with their BIOS disabled to the end of the list. This
256 * works on *almost* all computers. Where it doesn't work, we have this
257 * option. Setting this option to non-0 will reverse the order of the sort
258 * to highest first, then lowest, but will still leave cards with their BIOS
259 * disabled at the very end. That should fix everyone up unless there are
260 * really strange cirumstances.
261 */
262static uint32_t aic79xx_reverse_scan;
263
264/*
265 * Should we force EXTENDED translation on a controller.
266 * 0 == Use whatever is in the SEEPROM or default to off
267 * 1 == Use whatever is in the SEEPROM or default to on
268 */
269static uint32_t aic79xx_extended;
270
271/*
272 * PCI bus parity checking of the Adaptec controllers. This is somewhat
273 * dubious at best. To my knowledge, this option has never actually
274 * solved a PCI parity problem, but on certain machines with broken PCI
275 * chipset configurations, it can generate tons of false error messages.
276 * It's included in the driver for completeness.
277 * 0 = Shut off PCI parity check
278 * non-0 = Enable PCI parity check
279 *
280 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
281 * variable to -1 you would actually want to simply pass the variable
282 * name without a number. That will invert the 0 which will result in
283 * -1.
284 */
285static uint32_t aic79xx_pci_parity = ~0;
286
287/*
288 * There are lots of broken chipsets in the world. Some of them will
289 * violate the PCI spec when we issue byte sized memory writes to our
290 * controller. I/O mapped register access, if allowed by the given
291 * platform, will work in almost all cases.
292 */
293uint32_t aic79xx_allow_memio = ~0;
294
1da177e4
LT		 295/*
296 * So that we can set how long each device is given as a selection timeout.
297 * The table of values goes like this:
298 * 0 - 256ms
299 * 1 - 128ms
300 * 2 - 64ms
301 * 3 - 32ms
302 * We default to 256ms because some older devices need a longer time
303 * to respond to initial selection.
304 */
305static uint32_t aic79xx_seltime;
306
307/*
308 * Certain devices do not perform any aging on commands. Should the
309 * device be saturated by commands in one portion of the disk, it is
310 * possible for transactions on far away sectors to never be serviced.
311 * To handle these devices, we can periodically send an ordered tag to
312 * force all outstanding transactions to be serviced prior to a new
313 * transaction.
314 */
315uint32_t aic79xx_periodic_otag;
316
3fb08612
HR		 317/* Some storage boxes are using an LSI chip which has a bug making it
318 * impossible to use aic79xx Rev B chip in 320 speeds. The following
319 * storage boxes have been reported to be buggy:
320 * EonStor 3U 16-Bay: U16U-G3A3
321 * EonStor 2U 12-Bay: U12U-G3A3
322 * SentinelRAID: 2500F R5 / R6
323 * SentinelRAID: 2500F R1
324 * SentinelRAID: 2500F/1500F
325 * SentinelRAID: 150F
326 *
327 * To get around this LSI bug, you can set your board to 160 mode
328 * or you can enable the SLOWCRC bit.
329 */
330uint32_t aic79xx_slowcrc;
331
1da177e4
LT		 332/*
333 * Module information and settable options.
334 */
335static char *aic79xx = NULL;
336
337MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
338MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
339MODULE_LICENSE("Dual BSD/GPL");
340MODULE_VERSION(AIC79XX_DRIVER_VERSION);
73a25462 341module_param(aic79xx, charp, 0444);
1da177e4
LT		 342MODULE_PARM_DESC(aic79xx,
343"period delimited, options string.\n"
344" verbose Enable verbose/diagnostic logging\n"
345" allow_memio Allow device registers to be memory mapped\n"
346" debug Bitmask of debug values to enable\n"
347" no_reset Supress initial bus resets\n"
348" extended Enable extended geometry on all controllers\n"
349" periodic_otag Send an ordered tagged transaction\n"
350" periodically to prevent tag starvation.\n"
351" This may be required by some older disk\n"
352" or drives/RAID arrays.\n"
353" reverse_scan Sort PCI devices highest Bus/Slot to lowest\n"
354" tag_info:<tag_str> Set per-target tag depth\n"
355" global_tag_depth:<int> Global tag depth for all targets on all buses\n"
1da177e4
LT		 356" slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
357" precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
358" amplitude:<int> Set the signal amplitude (0-7).\n"
359" seltime:<int> Selection Timeout:\n"
360" (0/256ms,1/128ms,2/64ms,3/32ms)\n"
3fb08612 361" slowcrc Turn on the SLOWCRC bit (Rev B only)\n"
1da177e4
LT		 362"\n"
363" Sample /etc/modprobe.conf line:\n"
364" Enable verbose logging\n"
365" Set tag depth on Controller 2/Target 2 to 10 tags\n"
366" Shorten the selection timeout to 128ms\n"
367"\n"
368" options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
73a25462 369"\n");
1da177e4
LT		 370
371static void ahd_linux_handle_scsi_status(struct ahd_softc *,
73a25462 372 struct scsi_device *,
1da177e4
LT		 373 struct scb *);
374static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd,
73a25462 375 struct scsi_cmnd *cmd);
6902f416 376static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd);
1da177e4 377static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd);
1da177e4
LT		 378static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd,
379 struct ahd_devinfo *devinfo);
73a25462 380static void ahd_linux_device_queue_depth(struct scsi_device *);
60a13213 381static int ahd_linux_run_command(struct ahd_softc*,
73a25462 382 struct ahd_linux_device *,
60a13213 383 struct scsi_cmnd *);
1da177e4 384static void ahd_linux_setup_tag_info_global(char *p);
73a25462 385static int aic79xx_setup(char *c);
85a46523
CH		 386
387static int ahd_linux_unit;
388
1da177e4
LT		 389
390/****************************** Inlines ***************************************/
1da177e4
LT		 391static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
392
1da177e4
LT		 393static __inline void
394ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
395{
73a25462 396 struct scsi_cmnd *cmd;
1da177e4
LT		 397 int direction;
398
399 cmd = scb->io_ctx;
be7db055 400 direction = cmd->sc_data_direction;
1da177e4
LT		 401 ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE);
402 if (cmd->use_sg != 0) {
403 struct scatterlist *sg;
404
405 sg = (struct scatterlist *)cmd->request_buffer;
406 pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction);
407 } else if (cmd->request_bufflen != 0) {
408 pci_unmap_single(ahd->dev_softc,
409 scb->platform_data->buf_busaddr,
410 cmd->request_bufflen, direction);
411 }
412}
413
414/******************************** Macros **************************************/
415#define BUILD_SCSIID(ahd, cmd) \
422c0d61 416 (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
1da177e4 417
1da177e4
LT		 418/*
419 * Return a string describing the driver.
420 */
421static const char *
422ahd_linux_info(struct Scsi_Host *host)
423{
424 static char buffer[512];
425 char ahd_info[256];
426 char *bp;
427 struct ahd_softc *ahd;
428
429 bp = &buffer[0];
430 ahd = *(struct ahd_softc **)host->hostdata;
431 memset(bp, 0, sizeof(buffer));
432 strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
433 strcat(bp, AIC79XX_DRIVER_VERSION);
434 strcat(bp, "\n");
435 strcat(bp, " <");
436 strcat(bp, ahd->description);
437 strcat(bp, ">\n");
438 strcat(bp, " ");
439 ahd_controller_info(ahd, ahd_info);
440 strcat(bp, ahd_info);
441 strcat(bp, "\n");
442
443 return (bp);
444}
445
446/*
447 * Queue an SCB to the controller.
448 */
449static int
73a25462 450ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
1da177e4
LT		 451{
452 struct ahd_softc *ahd;
73a25462 453 struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device);
4065a413 454 int rtn = SCSI_MLQUEUE_HOST_BUSY;
1da177e4
LT		 455
456 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
457
7b22da38
HR		 458 cmd->scsi_done = scsi_done;
459 cmd->result = CAM_REQ_INPROG << 16;
460 rtn = ahd_linux_run_command(ahd, dev, cmd);
1da177e4 461
4065a413 462 return rtn;
1da177e4
LT		 463}
464
73a25462
HR		 465static inline struct scsi_target **
466ahd_linux_target_in_softc(struct scsi_target *starget)
467{
468 struct ahd_softc *ahd =
469 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
470 unsigned int target_offset;
471
472 target_offset = starget->id;
473 if (starget->channel != 0)
474 target_offset += 8;
475
476 return &ahd->platform_data->starget[target_offset];
477}
478
1da177e4 479static int
73a25462 480ahd_linux_target_alloc(struct scsi_target *starget)
1da177e4 481{
73a25462
HR		 482 struct ahd_softc *ahd =
483 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
986a25f9 484 struct seeprom_config *sc = ahd->seep_config;
73a25462
HR		 485 unsigned long flags;
486 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
487 struct ahd_linux_target *targ = scsi_transport_target_data(starget);
488 struct ahd_devinfo devinfo;
489 struct ahd_initiator_tinfo *tinfo;
490 struct ahd_tmode_tstate *tstate;
491 char channel = starget->channel + 'A';
1da177e4 492
73a25462
HR		 493 ahd_lock(ahd, &flags);
494
495 BUG_ON(*ahd_targp != NULL);
496
497 *ahd_targp = starget;
498 memset(targ, 0, sizeof(*targ));
499
986a25f9
HR		 500 if (sc) {
501 int flags = sc->device_flags[starget->id];
502
503 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
504 starget->id, &tstate);
505
506 if ((flags & CFPACKETIZED) == 0) {
507 /* Do not negotiate packetized transfers */
508 spi_rd_strm(starget) = 0;
509 spi_pcomp_en(starget) = 0;
510 spi_rti(starget) = 0;
511 spi_wr_flow(starget) = 0;
512 spi_hold_mcs(starget) = 0;
513 } else {
514 if ((ahd->features & AHD_RTI) == 0)
515 spi_rti(starget) = 0;
516 }
517
518 if ((flags & CFQAS) == 0)
519 spi_qas(starget) = 0;
520
521 /* Transinfo values have been set to BIOS settings */
522 spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0;
523 spi_min_period(starget) = tinfo->user.period;
524 spi_max_offset(starget) = tinfo->user.offset;
525 }
526
73a25462
HR		 527 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
528 starget->id, &tstate);
529 ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id,
530 CAM_LUN_WILDCARD, channel,
531 ROLE_INITIATOR);
73a25462
HR		 532 ahd_set_syncrate(ahd, &devinfo, 0, 0, 0,
533 AHD_TRANS_GOAL, /*paused*/FALSE);
534 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
535 AHD_TRANS_GOAL, /*paused*/FALSE);
536 ahd_unlock(ahd, &flags);
537
538 return 0;
539}
540
541static void
542ahd_linux_target_destroy(struct scsi_target *starget)
543{
544 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
545
546 *ahd_targp = NULL;
1da177e4
LT		 547}
548
549static int
73a25462 550ahd_linux_slave_alloc(struct scsi_device *sdev)
1da177e4 551{
73a25462
HR		 552 struct ahd_softc *ahd =
553 *((struct ahd_softc **)sdev->host->hostdata);
554 struct scsi_target *starget = sdev->sdev_target;
555 struct ahd_linux_target *targ = scsi_transport_target_data(starget);
556 struct ahd_linux_device *dev;
1da177e4 557
1da177e4 558 if (bootverbose)
73a25462
HR		 559 printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id);
560
561 BUG_ON(targ->sdev[sdev->lun] != NULL);
562
563 dev = scsi_transport_device_data(sdev);
564 memset(dev, 0, sizeof(*dev));
565
566 /*
567 * We start out life using untagged
568 * transactions of which we allow one.
569 */
570 dev->openings = 1;
571
1da177e4 572 /*
73a25462
HR		 573 * Set maxtags to 0. This will be changed if we
574 * later determine that we are dealing with
575 * a tagged queuing capable device.
1da177e4 576 */
73a25462
HR		 577 dev->maxtags = 0;
578
579 targ->sdev[sdev->lun] = sdev;
580
1da177e4
LT		 581 return (0);
582}
583
73a25462
HR		 584static int
585ahd_linux_slave_configure(struct scsi_device *sdev)
586{
587 struct ahd_softc *ahd;
588
589 ahd = *((struct ahd_softc **)sdev->host->hostdata);
590 if (bootverbose)
017560fc 591 sdev_printk(KERN_INFO, sdev, "Slave Configure\n");
73a25462
HR		 592
593 ahd_linux_device_queue_depth(sdev);
594
595 /* Initial Domain Validation */
596 if (!spi_initial_dv(sdev->sdev_target))
597 spi_dv_device(sdev);
598
599 return 0;
600}
601
1da177e4 602static void
73a25462 603ahd_linux_slave_destroy(struct scsi_device *sdev)
1da177e4
LT		 604{
605 struct ahd_softc *ahd;
73a25462
HR		 606 struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
607 struct ahd_linux_target *targ = scsi_transport_target_data(sdev->sdev_target);
1da177e4 608
73a25462 609 ahd = *((struct ahd_softc **)sdev->host->hostdata);
1da177e4 610 if (bootverbose)
73a25462
HR		 611 printf("%s: Slave Destroy %d\n", ahd_name(ahd), sdev->id);
612
613 BUG_ON(dev->active);
614
615 targ->sdev[sdev->lun] = NULL;
1da177e4 616
1da177e4 617}
1da177e4
LT		 618
619#if defined(__i386__)
620/*
621 * Return the disk geometry for the given SCSI device.
622 */
623static int
1da177e4
LT		 624ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
625 sector_t capacity, int geom[])
626{
627 uint8_t *bh;
1da177e4
LT		 628 int heads;
629 int sectors;
630 int cylinders;
631 int ret;
632 int extended;
633 struct ahd_softc *ahd;
634
635 ahd = *((struct ahd_softc **)sdev->host->hostdata);
636
1da177e4 637 bh = scsi_bios_ptable(bdev);
1da177e4
LT		 638 if (bh) {
639 ret = scsi_partsize(bh, capacity,
640 &geom[2], &geom[0], &geom[1]);
1da177e4 641 kfree(bh);
1da177e4
LT		 642 if (ret != -1)
643 return (ret);
644 }
645 heads = 64;
646 sectors = 32;
647 cylinders = aic_sector_div(capacity, heads, sectors);
648
649 if (aic79xx_extended != 0)
650 extended = 1;
651 else
652 extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0;
653 if (extended && cylinders >= 1024) {
654 heads = 255;
655 sectors = 63;
656 cylinders = aic_sector_div(capacity, heads, sectors);
657 }
658 geom[0] = heads;
659 geom[1] = sectors;
660 geom[2] = cylinders;
661 return (0);
662}
663#endif
664
665/*
666 * Abort the current SCSI command(s).
667 */
668static int
73a25462
HR		 669ahd_linux_abort(struct scsi_cmnd *cmd)
670{
671 int error;
6902f416
HR		 672
673 error = ahd_linux_queue_abort_cmd(cmd);
73a25462 674
73a25462
HR		 675 return error;
676}
677
678/*
679 * Attempt to send a target reset message to the device that timed out.
680 */
681static int
682ahd_linux_dev_reset(struct scsi_cmnd *cmd)
683{
6902f416
HR		 684 struct ahd_softc *ahd;
685 struct ahd_linux_device *dev;
686 struct scb *reset_scb;
687 u_int cdb_byte;
688 int retval = SUCCESS;
689 int paused;
690 int wait;
691 struct ahd_initiator_tinfo *tinfo;
692 struct ahd_tmode_tstate *tstate;
693 unsigned long flags;
694 DECLARE_COMPLETION(done);
73a25462 695
6902f416
HR		 696 reset_scb = NULL;
697 paused = FALSE;
698 wait = FALSE;
699 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
700
701 scmd_printk(KERN_INFO, cmd,
702 "Attempting to queue a TARGET RESET message:");
703
704 printf("CDB:");
705 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
706 printf(" 0x%x", cmd->cmnd[cdb_byte]);
707 printf("\n");
708
709 /*
710 * Determine if we currently own this command.
711 */
712 dev = scsi_transport_device_data(cmd->device);
713
714 if (dev == NULL) {
715 /*
716 * No target device for this command exists,
717 * so we must not still own the command.
718 */
719 scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
720 return SUCCESS;
721 }
722
723 /*
724 * Generate us a new SCB
725 */
726 reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX);
727 if (!reset_scb) {
728 scmd_printk(KERN_INFO, cmd, "No SCB available\n");
729 return FAILED;
730 }
731
732 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
733 cmd->device->id, &tstate);
734 reset_scb->io_ctx = cmd;
735 reset_scb->platform_data->dev = dev;
736 reset_scb->sg_count = 0;
737 ahd_set_residual(reset_scb, 0);
738 ahd_set_sense_residual(reset_scb, 0);
739 reset_scb->platform_data->xfer_len = 0;
740 reset_scb->hscb->control = 0;
741 reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd);
742 reset_scb->hscb->lun = cmd->device->lun;
743 reset_scb->hscb->cdb_len = 0;
744 reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET;
745 reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE;
746 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
747 reset_scb->flags |= SCB_PACKETIZED;
748 } else {
749 reset_scb->hscb->control |= MK_MESSAGE;
750 }
751 dev->openings--;
752 dev->active++;
753 dev->commands_issued++;
754
755 ahd_lock(ahd, &flags);
756
757 LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links);
758 ahd_queue_scb(ahd, reset_scb);
759
760 ahd->platform_data->eh_done = &done;
761 ahd_unlock(ahd, &flags);
762
763 printf("%s: Device reset code sleeping\n", ahd_name(ahd));
764 if (!wait_for_completion_timeout(&done, 5 * HZ)) {
765 ahd_lock(ahd, &flags);
766 ahd->platform_data->eh_done = NULL;
767 ahd_unlock(ahd, &flags);
768 printf("%s: Device reset timer expired (active %d)\n",
769 ahd_name(ahd), dev->active);
770 retval = FAILED;
771 }
772 printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval);
773
774 return (retval);
73a25462
HR		 775}
776
777/*
778 * Reset the SCSI bus.
779 */
780static int
781ahd_linux_bus_reset(struct scsi_cmnd *cmd)
1da177e4
LT		 782{
783 struct ahd_softc *ahd;
73a25462 784 int found;
1da177e4 785
1da177e4 786 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
73a25462
HR		 787#ifdef AHD_DEBUG
788 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
789 printf("%s: Bus reset called for cmd %p\n",
790 ahd_name(ahd), cmd);
791#endif
422c0d61 792 found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A',
73a25462 793 /*initiate reset*/TRUE);
1da177e4 794
73a25462
HR		 795 if (bootverbose)
796 printf("%s: SCSI bus reset delivered. "
797 "%d SCBs aborted.\n", ahd_name(ahd), found);
1da177e4 798
73a25462
HR		 799 return (SUCCESS);
800}
1da177e4 801
73a25462
HR		 802struct scsi_host_template aic79xx_driver_template = {
803 .module = THIS_MODULE,
804 .name = "aic79xx",
85a46523 805 .proc_name = "aic79xx",
73a25462
HR		 806 .proc_info = ahd_linux_proc_info,
807 .info = ahd_linux_info,
808 .queuecommand = ahd_linux_queue,
809 .eh_abort_handler = ahd_linux_abort,
810 .eh_device_reset_handler = ahd_linux_dev_reset,
811 .eh_bus_reset_handler = ahd_linux_bus_reset,
812#if defined(__i386__)
813 .bios_param = ahd_linux_biosparam,
814#endif
815 .can_queue = AHD_MAX_QUEUE,
816 .this_id = -1,
817 .cmd_per_lun = 2,
818 .use_clustering = ENABLE_CLUSTERING,
819 .slave_alloc = ahd_linux_slave_alloc,
820 .slave_configure = ahd_linux_slave_configure,
821 .slave_destroy = ahd_linux_slave_destroy,
822 .target_alloc = ahd_linux_target_alloc,
823 .target_destroy = ahd_linux_target_destroy,
824};
1da177e4 825
73a25462
HR		 826/******************************** Bus DMA *************************************/
827int
828ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent,
829 bus_size_t alignment, bus_size_t boundary,
830 dma_addr_t lowaddr, dma_addr_t highaddr,
831 bus_dma_filter_t *filter, void *filterarg,
832 bus_size_t maxsize, int nsegments,
833 bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
834{
835 bus_dma_tag_t dmat;
836
837 dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT);
838 if (dmat == NULL)
839 return (ENOMEM);
1da177e4 840
1da177e4 841 /*
73a25462
HR		 842 * Linux is very simplistic about DMA memory. For now don't
843 * maintain all specification information. Once Linux supplies
844 * better facilities for doing these operations, or the
845 * needs of this particular driver change, we might need to do
846 * more here.
1da177e4 847 */
73a25462
HR		 848 dmat->alignment = alignment;
849 dmat->boundary = boundary;
850 dmat->maxsize = maxsize;
851 *ret_tag = dmat;
852 return (0);
853}
1da177e4 854
73a25462
HR		 855void
856ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat)
857{
858 free(dmat, M_DEVBUF);
859}
1da177e4 860
73a25462
HR		 861int
862ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr,
863 int flags, bus_dmamap_t *mapp)
864{
865 *vaddr = pci_alloc_consistent(ahd->dev_softc,
866 dmat->maxsize, mapp);
867 if (*vaddr == NULL)
868 return (ENOMEM);
869 return(0);
870}
1da177e4 871
73a25462
HR		 872void
873ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat,
874 void* vaddr, bus_dmamap_t map)
875{
876 pci_free_consistent(ahd->dev_softc, dmat->maxsize,
877 vaddr, map);
878}
879
880int
881ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map,
882 void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb,
883 void *cb_arg, int flags)
884{
1da177e4 885 /*
73a25462
HR		 886 * Assume for now that this will only be used during
887 * initialization and not for per-transaction buffer mapping.
1da177e4 888 */
73a25462 889 bus_dma_segment_t stack_sg;
1da177e4 890
73a25462
HR		 891 stack_sg.ds_addr = map;
892 stack_sg.ds_len = dmat->maxsize;
893 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
894 return (0);
895}
1da177e4 896
73a25462
HR		 897void
898ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
899{
900}
1da177e4 901
73a25462
HR		 902int
903ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
904{
905 /* Nothing to do */
906 return (0);
907}
1da177e4 908
73a25462 909/********************* Platform Dependent Functions ***************************/
73a25462
HR		 910static void
911ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value)
912{
1da177e4 913
73a25462
HR		 914 if ((instance >= 0)
915 && (instance < NUM_ELEMENTS(aic79xx_iocell_info))) {
916 uint8_t *iocell_info;
917
918 iocell_info = (uint8_t*)&aic79xx_iocell_info[instance];
919 iocell_info[index] = value & 0xFFFF;
920 if (bootverbose)
921 printf("iocell[%d:%ld] = %d\n", instance, index, value);
1da177e4 922 }
73a25462 923}
1da177e4 924
73a25462
HR		 925static void
926ahd_linux_setup_tag_info_global(char *p)
927{
928 int tags, i, j;
1da177e4 929
73a25462
HR		 930 tags = simple_strtoul(p + 1, NULL, 0) & 0xff;
931 printf("Setting Global Tags= %d\n", tags);
932
933 for (i = 0; i < NUM_ELEMENTS(aic79xx_tag_info); i++) {
934 for (j = 0; j < AHD_NUM_TARGETS; j++) {
935 aic79xx_tag_info[i].tag_commands[j] = tags;
1da177e4 936 }
1da177e4 937 }
1da177e4
LT		 938}
939
1da177e4 940static void
73a25462 941ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
1da177e4 942{
1da177e4 943
73a25462
HR		 944 if ((instance >= 0) && (targ >= 0)
945 && (instance < NUM_ELEMENTS(aic79xx_tag_info))
946 && (targ < AHD_NUM_TARGETS)) {
947 aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF;
948 if (bootverbose)
949 printf("tag_info[%d:%d] = %d\n", instance, targ, value);
1da177e4 950 }
1da177e4
LT		 951}
952
1ff92730
CH		 953static char *
954ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth,
955 void (*callback)(u_long, int, int, int32_t),
956 u_long callback_arg)
957{
958 char *tok_end;
959 char *tok_end2;
960 int i;
961 int instance;
962 int targ;
963 int done;
964 char tok_list[] = {'.', ',', '{', '}', '\0'};
965
966 /* All options use a ':' name/arg separator */
967 if (*opt_arg != ':')
968 return (opt_arg);
969 opt_arg++;
970 instance = -1;
971 targ = -1;
972 done = FALSE;
973 /*
974 * Restore separator that may be in
975 * the middle of our option argument.
976 */
977 tok_end = strchr(opt_arg, '\0');
978 if (tok_end < end)
979 *tok_end = ',';
980 while (!done) {
981 switch (*opt_arg) {
982 case '{':
983 if (instance == -1) {
984 instance = 0;
985 } else {
986 if (depth > 1) {
987 if (targ == -1)
988 targ = 0;
989 } else {
990 printf("Malformed Option %s\n",
991 opt_name);
992 done = TRUE;
993 }
994 }
995 opt_arg++;
996 break;
997 case '}':
998 if (targ != -1)
999 targ = -1;
1000 else if (instance != -1)
1001 instance = -1;
1002 opt_arg++;
1003 break;
1004 case ',':
1005 case '.':
1006 if (instance == -1)
1007 done = TRUE;
1008 else if (targ >= 0)
1009 targ++;
1010 else if (instance >= 0)
1011 instance++;
1012 opt_arg++;
1013 break;
1014 case '\0':
1015 done = TRUE;
1016 break;
1017 default:
1018 tok_end = end;
1019 for (i = 0; tok_list[i]; i++) {
1020 tok_end2 = strchr(opt_arg, tok_list[i]);
1021 if ((tok_end2) && (tok_end2 < tok_end))
1022 tok_end = tok_end2;
1023 }
1024 callback(callback_arg, instance, targ,
1025 simple_strtol(opt_arg, NULL, 0));
1026 opt_arg = tok_end;
1027 break;
1028 }
1029 }
1030 return (opt_arg);
1031}
1032
1da177e4 1033/*
73a25462
HR		 1034 * Handle Linux boot parameters. This routine allows for assigning a value
1035 * to a parameter with a ':' between the parameter and the value.
1036 * ie. aic79xx=stpwlev:1,extended
1da177e4
LT		 1037 */
1038static int
73a25462 1039aic79xx_setup(char *s)
1da177e4 1040{
73a25462
HR		 1041 int i, n;
1042 char *p;
1043 char *end;
1da177e4 1044
73a25462
HR		 1045 static struct {
1046 const char *name;
1047 uint32_t *flag;
1048 } options[] = {
1049 { "extended", &aic79xx_extended },
1050 { "no_reset", &aic79xx_no_reset },
1051 { "verbose", &aic79xx_verbose },
1052 { "allow_memio", &aic79xx_allow_memio},
1da177e4 1053#ifdef AHD_DEBUG
73a25462 1054 { "debug", &ahd_debug },
1da177e4 1055#endif
73a25462
HR		 1056 { "reverse_scan", &aic79xx_reverse_scan },
1057 { "periodic_otag", &aic79xx_periodic_otag },
1058 { "pci_parity", &aic79xx_pci_parity },
1059 { "seltime", &aic79xx_seltime },
1060 { "tag_info", NULL },
1061 { "global_tag_depth", NULL},
1062 { "slewrate", NULL },
1063 { "precomp", NULL },
1064 { "amplitude", NULL },
3fb08612 1065 { "slowcrc", &aic79xx_slowcrc },
73a25462 1066 };
1da177e4 1067
73a25462 1068 end = strchr(s, '\0');
1da177e4 1069
73a25462
HR		 1070 /*
1071 * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS
1072 * will never be 0 in this case.
1073 */
1074 n = 0;
1075
1076 while ((p = strsep(&s, ",.")) != NULL) {
1077 if (*p == '\0')
1078 continue;
1079 for (i = 0; i < NUM_ELEMENTS(options); i++) {
1080
1081 n = strlen(options[i].name);
1082 if (strncmp(options[i].name, p, n) == 0)
1083 break;
1084 }
1085 if (i == NUM_ELEMENTS(options))
1086 continue;
1087
1088 if (strncmp(p, "global_tag_depth", n) == 0) {
1089 ahd_linux_setup_tag_info_global(p + n);
1090 } else if (strncmp(p, "tag_info", n) == 0) {
1ff92730 1091 s = ahd_parse_brace_option("tag_info", p + n, end,
73a25462
HR		 1092 2, ahd_linux_setup_tag_info, 0);
1093 } else if (strncmp(p, "slewrate", n) == 0) {
1ff92730 1094 s = ahd_parse_brace_option("slewrate",
73a25462
HR		 1095 p + n, end, 1, ahd_linux_setup_iocell_info,
1096 AIC79XX_SLEWRATE_INDEX);
1097 } else if (strncmp(p, "precomp", n) == 0) {
1ff92730 1098 s = ahd_parse_brace_option("precomp",
73a25462
HR		 1099 p + n, end, 1, ahd_linux_setup_iocell_info,
1100 AIC79XX_PRECOMP_INDEX);
1101 } else if (strncmp(p, "amplitude", n) == 0) {
1ff92730 1102 s = ahd_parse_brace_option("amplitude",
73a25462
HR		 1103 p + n, end, 1, ahd_linux_setup_iocell_info,
1104 AIC79XX_AMPLITUDE_INDEX);
1105 } else if (p[n] == ':') {
1106 *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
1107 } else if (!strncmp(p, "verbose", n)) {
1108 *(options[i].flag) = 1;
1109 } else {
1110 *(options[i].flag) ^= 0xFFFFFFFF;
1111 }
1112 }
1113 return 1;
1da177e4
LT		 1114}
1115
73a25462
HR		 1116__setup("aic79xx=", aic79xx_setup);
1117
1118uint32_t aic79xx_verbose;
1da177e4 1119
1da177e4 1120int
73a25462 1121ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template)
1da177e4 1122{
73a25462
HR		 1123 char buf[80];
1124 struct Scsi_Host *host;
1125 char *new_name;
1126 u_long s;
e7a1ca1d 1127 int retval;
1da177e4 1128
73a25462
HR		 1129 template->name = ahd->description;
1130 host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
1131 if (host == NULL)
1da177e4
LT		 1132 return (ENOMEM);
1133
73a25462 1134 *((struct ahd_softc **)host->hostdata) = ahd;
73a25462
HR		 1135 ahd->platform_data->host = host;
1136 host->can_queue = AHD_MAX_QUEUE;
1137 host->cmd_per_lun = 2;
1138 host->sg_tablesize = AHD_NSEG;
1139 host->this_id = ahd->our_id;
1140 host->irq = ahd->platform_data->irq;
1141 host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8;
1142 host->max_lun = AHD_NUM_LUNS;
1143 host->max_channel = 0;
1144 host->sg_tablesize = AHD_NSEG;
eb221849 1145 ahd_lock(ahd, &s);
85a46523 1146 ahd_set_unit(ahd, ahd_linux_unit++);
eb221849 1147 ahd_unlock(ahd, &s);
73a25462
HR		 1148 sprintf(buf, "scsi%d", host->host_no);
1149 new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
1150 if (new_name != NULL) {
1151 strcpy(new_name, buf);
1152 ahd_set_name(ahd, new_name);
1153 }
1154 host->unique_id = ahd->unit;
1155 ahd_linux_initialize_scsi_bus(ahd);
1156 ahd_intr_enable(ahd, TRUE);
73a25462
HR		 1157
1158 host->transportt = ahd_linux_transport_template;
1159
e7a1ca1d
JJ		 1160 retval = scsi_add_host(host, &ahd->dev_softc->dev);
1161 if (retval) {
1162 printk(KERN_WARNING "aic79xx: scsi_add_host failed\n");
1163 scsi_host_put(host);
1164 return retval;
1165 }
1166
73a25462 1167 scsi_scan_host(host);
e7a1ca1d 1168 return 0;
1da177e4
LT		 1169}
1170
73a25462
HR		 1171uint64_t
1172ahd_linux_get_memsize(void)
1da177e4 1173{
73a25462
HR		 1174 struct sysinfo si;
1175
1176 si_meminfo(&si);
1177 return ((uint64_t)si.totalram << PAGE_SHIFT);
1da177e4
LT		 1178}
1179
73a25462
HR		 1180/*
1181 * Place the SCSI bus into a known state by either resetting it,
1182 * or forcing transfer negotiations on the next command to any
1183 * target.
1184 */
1185static void
1186ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
1da177e4 1187{
73a25462
HR		 1188 u_int target_id;
1189 u_int numtarg;
eb221849 1190 unsigned long s;
1da177e4 1191
73a25462
HR		 1192 target_id = 0;
1193 numtarg = 0;
1194
1195 if (aic79xx_no_reset != 0)
1196 ahd->flags &= ~AHD_RESET_BUS_A;
1197
1198 if ((ahd->flags & AHD_RESET_BUS_A) != 0)
1199 ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE);
1200 else
1201 numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
1da177e4 1202
eb221849
HR		 1203 ahd_lock(ahd, &s);
1204
1da177e4 1205 /*
73a25462
HR		 1206 * Force negotiation to async for all targets that
1207 * will not see an initial bus reset.
1da177e4 1208 */
73a25462
HR		 1209 for (; target_id < numtarg; target_id++) {
1210 struct ahd_devinfo devinfo;
1211 struct ahd_initiator_tinfo *tinfo;
1212 struct ahd_tmode_tstate *tstate;
1213
1214 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1215 target_id, &tstate);
1216 ahd_compile_devinfo(&devinfo, ahd->our_id, target_id,
1217 CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR);
1218 ahd_update_neg_request(ahd, &devinfo, tstate,
1219 tinfo, AHD_NEG_ALWAYS);
1220 }
eb221849 1221 ahd_unlock(ahd, &s);
73a25462
HR		 1222 /* Give the bus some time to recover */
1223 if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
1224 ahd_freeze_simq(ahd);
eb221849
HR		 1225 msleep(AIC79XX_RESET_DELAY);
1226 ahd_release_simq(ahd);
73a25462 1227 }
1da177e4
LT		 1228}
1229
1230int
73a25462 1231ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1da177e4 1232{
73a25462
HR		 1233 ahd->platform_data =
1234 malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT);
1235 if (ahd->platform_data == NULL)
1236 return (ENOMEM);
1237 memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data));
1238 ahd->platform_data->irq = AHD_LINUX_NOIRQ;
1239 ahd_lockinit(ahd);
73a25462 1240 ahd->seltime = (aic79xx_seltime & 0x3) << 4;
1da177e4
LT		 1241 return (0);
1242}
1243
73a25462
HR		 1244void
1245ahd_platform_free(struct ahd_softc *ahd)
1da177e4 1246{
73a25462
HR		 1247 struct scsi_target *starget;
1248 int i, j;
1da177e4 1249
73a25462 1250 if (ahd->platform_data != NULL) {
73a25462
HR		 1251 /* destroy all of the device and target objects */
1252 for (i = 0; i < AHD_NUM_TARGETS; i++) {
1253 starget = ahd->platform_data->starget[i];
1254 if (starget != NULL) {
1255 for (j = 0; j < AHD_NUM_LUNS; j++) {
1256 struct ahd_linux_target *targ =
1257 scsi_transport_target_data(starget);
1258 if (targ->sdev[j] == NULL)
1259 continue;
1260 targ->sdev[j] = NULL;
1261 }
1262 ahd->platform_data->starget[i] = NULL;
1263 }
1264 }
1da177e4 1265
73a25462
HR		 1266 if (ahd->platform_data->irq != AHD_LINUX_NOIRQ)
1267 free_irq(ahd->platform_data->irq, ahd);
1268 if (ahd->tags[0] == BUS_SPACE_PIO
1269 && ahd->bshs[0].ioport != 0)
1270 release_region(ahd->bshs[0].ioport, 256);
1271 if (ahd->tags[1] == BUS_SPACE_PIO
1272 && ahd->bshs[1].ioport != 0)
1273 release_region(ahd->bshs[1].ioport, 256);
1274 if (ahd->tags[0] == BUS_SPACE_MEMIO
1275 && ahd->bshs[0].maddr != NULL) {
1276 iounmap(ahd->bshs[0].maddr);
1277 release_mem_region(ahd->platform_data->mem_busaddr,
1278 0x1000);
1279 }
97af50f6
JB		 1280 if (ahd->platform_data->host)
1281 scsi_host_put(ahd->platform_data->host);
1282
73a25462
HR		 1283 free(ahd->platform_data, M_DEVBUF);
1284 }
1da177e4
LT		 1285}
1286
73a25462
HR		 1287void
1288ahd_platform_init(struct ahd_softc *ahd)
1da177e4 1289{
73a25462
HR		 1290 /*
1291 * Lookup and commit any modified IO Cell options.
1292 */
1293 if (ahd->unit < NUM_ELEMENTS(aic79xx_iocell_info)) {
1294 struct ahd_linux_iocell_opts *iocell_opts;
1da177e4 1295
73a25462
HR		 1296 iocell_opts = &aic79xx_iocell_info[ahd->unit];
1297 if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP)
1298 AHD_SET_PRECOMP(ahd, iocell_opts->precomp);
1299 if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE)
1300 AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate);
1301 if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE)
1302 AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude);
1da177e4 1303 }
1da177e4 1304
1da177e4
LT		 1305}
1306
73a25462
HR		 1307void
1308ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
1da177e4 1309{
73a25462
HR		 1310 ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
1311 SCB_GET_CHANNEL(ahd, scb),
1312 SCB_GET_LUN(scb), SCB_LIST_NULL,
1313 ROLE_UNKNOWN, CAM_REQUEUE_REQ);
1da177e4
LT		 1314}
1315
73a25462
HR		 1316void
1317ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
1318 ahd_queue_alg alg)
1da177e4 1319{
73a25462
HR		 1320 struct scsi_target *starget;
1321 struct ahd_linux_target *targ;
1322 struct ahd_linux_device *dev;
1323 struct scsi_device *sdev;
1324 int was_queuing;
1325 int now_queuing;
1da177e4 1326
73a25462
HR		 1327 starget = ahd->platform_data->starget[devinfo->target];
1328 targ = scsi_transport_target_data(starget);
1329 BUG_ON(targ == NULL);
1330 sdev = targ->sdev[devinfo->lun];
1331 if (sdev == NULL)
1332 return;
1da177e4 1333
73a25462 1334 dev = scsi_transport_device_data(sdev);
1da177e4 1335
73a25462
HR		 1336 if (dev == NULL)
1337 return;
1338 was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED);
1339 switch (alg) {
1340 default:
1341 case AHD_QUEUE_NONE:
1342 now_queuing = 0;
1343 break;
1344 case AHD_QUEUE_BASIC:
1345 now_queuing = AHD_DEV_Q_BASIC;
1346 break;
1347 case AHD_QUEUE_TAGGED:
1348 now_queuing = AHD_DEV_Q_TAGGED;
1349 break;
1350 }
1351 if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0
1352 && (was_queuing != now_queuing)
1353 && (dev->active != 0)) {
1354 dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY;
1355 dev->qfrozen++;
1da177e4 1356 }
1da177e4 1357
73a25462
HR		 1358 dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG);
1359 if (now_queuing) {
1360 u_int usertags;
1da177e4 1361
73a25462
HR		 1362 usertags = ahd_linux_user_tagdepth(ahd, devinfo);
1363 if (!was_queuing) {
1364 /*
1365 * Start out agressively and allow our
1366 * dynamic queue depth algorithm to take
1367 * care of the rest.
1368 */
1369 dev->maxtags = usertags;
1370 dev->openings = dev->maxtags - dev->active;
1da177e4 1371 }
73a25462
HR		 1372 if (dev->maxtags == 0) {
1373 /*
1374 * Queueing is disabled by the user.
1375 */
1376 dev->openings = 1;
1377 } else if (alg == AHD_QUEUE_TAGGED) {
1378 dev->flags |= AHD_DEV_Q_TAGGED;
1379 if (aic79xx_periodic_otag != 0)
1380 dev->flags |= AHD_DEV_PERIODIC_OTAG;
1381 } else
1382 dev->flags |= AHD_DEV_Q_BASIC;
1383 } else {
1384 /* We can only have one opening. */
1385 dev->maxtags = 0;
1386 dev->openings = 1 - dev->active;
1da177e4 1387 }
1da177e4 1388
73a25462
HR		 1389 switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
1390 case AHD_DEV_Q_BASIC:
0aa800db
HR		 1391 scsi_set_tag_type(sdev, MSG_SIMPLE_TASK);
1392 scsi_activate_tcq(sdev, dev->openings + dev->active);
73a25462
HR		 1393 break;
1394 case AHD_DEV_Q_TAGGED:
0aa800db
HR		 1395 scsi_set_tag_type(sdev, MSG_ORDERED_TASK);
1396 scsi_activate_tcq(sdev, dev->openings + dev->active);
73a25462
HR		 1397 break;
1398 default:
1da177e4 1399 /*
73a25462
HR		 1400 * We allow the OS to queue 2 untagged transactions to
1401 * us at any time even though we can only execute them
1402 * serially on the controller/device. This should
1403 * remove some latency.
1da177e4 1404 */
0aa800db 1405 scsi_deactivate_tcq(sdev, 1);
73a25462 1406 break;
1da177e4 1407 }
1da177e4
LT		 1408}
1409
73a25462
HR		 1410int
1411ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel,
1412 int lun, u_int tag, role_t role, uint32_t status)
1da177e4 1413{
73a25462 1414 return 0;
1da177e4
LT		 1415}
1416
73a25462
HR		 1417static u_int
1418ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
1da177e4 1419{
73a25462
HR		 1420 static int warned_user;
1421 u_int tags;
1da177e4 1422
73a25462
HR		 1423 tags = 0;
1424 if ((ahd->user_discenable & devinfo->target_mask) != 0) {
1425 if (ahd->unit >= NUM_ELEMENTS(aic79xx_tag_info)) {
1426
1427 if (warned_user == 0) {
1428 printf(KERN_WARNING
1429"aic79xx: WARNING: Insufficient tag_info instances\n"
1430"aic79xx: for installed controllers. Using defaults\n"
1431"aic79xx: Please update the aic79xx_tag_info array in\n"
1432"aic79xx: the aic79xx_osm.c source file.\n");
1433 warned_user++;
1434 }
1435 tags = AHD_MAX_QUEUE;
1436 } else {
1437 adapter_tag_info_t *tag_info;
1438
1439 tag_info = &aic79xx_tag_info[ahd->unit];
1440 tags = tag_info->tag_commands[devinfo->target_offset];
1441 if (tags > AHD_MAX_QUEUE)
1442 tags = AHD_MAX_QUEUE;
1da177e4
LT		 1443 }
1444 }
73a25462 1445 return (tags);
1da177e4
LT		 1446}
1447
1448/*
73a25462 1449 * Determines the queue depth for a given device.
1da177e4
LT		 1450 */
1451static void
73a25462 1452ahd_linux_device_queue_depth(struct scsi_device *sdev)
1da177e4 1453{
73a25462
HR		 1454 struct ahd_devinfo devinfo;
1455 u_int tags;
1456 struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata);
1da177e4 1457
73a25462
HR		 1458 ahd_compile_devinfo(&devinfo,
1459 ahd->our_id,
1460 sdev->sdev_target->id, sdev->lun,
1461 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1462 ROLE_INITIATOR);
1463 tags = ahd_linux_user_tagdepth(ahd, &devinfo);
1464 if (tags != 0 && sdev->tagged_supported != 0) {
1da177e4 1465
73a25462
HR		 1466 ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED);
1467 ahd_print_devinfo(ahd, &devinfo);
1468 printf("Tagged Queuing enabled. Depth %d\n", tags);
1469 } else {
1470 ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE);
1471 }
1472}
1da177e4 1473
73a25462
HR		 1474static int
1475ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
1476 struct scsi_cmnd *cmd)
1477{
1478 struct scb *scb;
1479 struct hardware_scb *hscb;
1480 struct ahd_initiator_tinfo *tinfo;
1481 struct ahd_tmode_tstate *tstate;
1482 u_int col_idx;
1483 uint16_t mask;
7b22da38
HR		 1484 unsigned long flags;
1485
1486 ahd_lock(ahd, &flags);
1da177e4
LT		 1487
1488 /*
73a25462 1489 * Get an scb to use.
1da177e4 1490 */
73a25462
HR		 1491 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1492 cmd->device->id, &tstate);
1493 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
1494 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1495 col_idx = AHD_NEVER_COL_IDX;
1496 } else {
1497 col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
1498 cmd->device->lun);
1499 }
1500 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
1501 ahd->flags |= AHD_RESOURCE_SHORTAGE;
7b22da38 1502 ahd_unlock(ahd, &flags);
73a25462 1503 return SCSI_MLQUEUE_HOST_BUSY;
1da177e4 1504 }
1da177e4 1505
73a25462
HR		 1506 scb->io_ctx = cmd;
1507 scb->platform_data->dev = dev;
1508 hscb = scb->hscb;
1509 cmd->host_scribble = (char *)scb;
1da177e4 1510
73a25462
HR		 1511 /*
1512 * Fill out basics of the HSCB.
1513 */
1514 hscb->control = 0;
1515 hscb->scsiid = BUILD_SCSIID(ahd, cmd);
1516 hscb->lun = cmd->device->lun;
1517 scb->hscb->task_management = 0;
1518 mask = SCB_GET_TARGET_MASK(ahd, scb);
1da177e4 1519
73a25462
HR		 1520 if ((ahd->user_discenable & mask) != 0)
1521 hscb->control |= DISCENB;
1da177e4 1522
73a25462
HR		 1523 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
1524 scb->flags |= SCB_PACKETIZED;
1da177e4 1525
73a25462
HR		 1526 if ((tstate->auto_negotiate & mask) != 0) {
1527 scb->flags |= SCB_AUTO_NEGOTIATE;
1528 scb->hscb->control |= MK_MESSAGE;
1529 }
1530
1531 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
1532 int msg_bytes;
1533 uint8_t tag_msgs[2];
1534
1535 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
1536 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
1537 hscb->control |= tag_msgs[0];
1538 if (tag_msgs[0] == MSG_ORDERED_TASK)
1539 dev->commands_since_idle_or_otag = 0;
1540 } else
1541 if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
1542 && (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
1543 hscb->control |= MSG_ORDERED_TASK;
1544 dev->commands_since_idle_or_otag = 0;
1545 } else {
1546 hscb->control |= MSG_SIMPLE_TASK;
1da177e4 1547 }
73a25462 1548 }
1da177e4 1549
73a25462
HR		 1550 hscb->cdb_len = cmd->cmd_len;
1551 memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
1552
1553 scb->platform_data->xfer_len = 0;
1554 ahd_set_residual(scb, 0);
1555 ahd_set_sense_residual(scb, 0);
1556 scb->sg_count = 0;
1557 if (cmd->use_sg != 0) {
1558 void *sg;
1559 struct scatterlist *cur_seg;
1560 u_int nseg;
1561 int dir;
1562
1563 cur_seg = (struct scatterlist *)cmd->request_buffer;
1564 dir = cmd->sc_data_direction;
1565 nseg = pci_map_sg(ahd->dev_softc, cur_seg,
1566 cmd->use_sg, dir);
1567 scb->platform_data->xfer_len = 0;
1568 for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) {
1569 dma_addr_t addr;
1570 bus_size_t len;
1571
1572 addr = sg_dma_address(cur_seg);
1573 len = sg_dma_len(cur_seg);
1574 scb->platform_data->xfer_len += len;
1575 sg = ahd_sg_setup(ahd, scb, sg, addr, len,
1576 /*last*/nseg == 1);
1da177e4 1577 }
73a25462
HR		 1578 } else if (cmd->request_bufflen != 0) {
1579 void *sg;
1580 dma_addr_t addr;
1581 int dir;
1582
1583 sg = scb->sg_list;
1584 dir = cmd->sc_data_direction;
1585 addr = pci_map_single(ahd->dev_softc,
1586 cmd->request_buffer,
1587 cmd->request_bufflen, dir);
1588 scb->platform_data->xfer_len = cmd->request_bufflen;
1589 scb->platform_data->buf_busaddr = addr;
1590 sg = ahd_sg_setup(ahd, scb, sg, addr,
1591 cmd->request_bufflen, /*last*/TRUE);
1da177e4 1592 }
73a25462
HR		 1593
1594 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1595 dev->openings--;
1596 dev->active++;
1597 dev->commands_issued++;
1598
1599 if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
1600 dev->commands_since_idle_or_otag++;
1601 scb->flags |= SCB_ACTIVE;
1602 ahd_queue_scb(ahd, scb);
1603
7b22da38
HR		 1604 ahd_unlock(ahd, &flags);
1605
73a25462 1606 return 0;
1da177e4
LT		 1607}
1608
73a25462
HR		 1609/*
1610 * SCSI controller interrupt handler.
1611 */
1612irqreturn_t
1613ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
1da177e4 1614{
73a25462
HR		 1615 struct ahd_softc *ahd;
1616 u_long flags;
1617 int ours;
1da177e4 1618
73a25462
HR		 1619 ahd = (struct ahd_softc *) dev_id;
1620 ahd_lock(ahd, &flags);
1621 ours = ahd_intr(ahd);
1622 ahd_unlock(ahd, &flags);
1623 return IRQ_RETVAL(ours);
1da177e4
LT		 1624}
1625
1da177e4 1626void
73a25462
HR		 1627ahd_send_async(struct ahd_softc *ahd, char channel,
1628 u_int target, u_int lun, ac_code code, void *arg)
1da177e4 1629{
73a25462
HR		 1630 switch (code) {
1631 case AC_TRANSFER_NEG:
1632 {
1633 char buf[80];
1634 struct scsi_target *starget;
73a25462
HR		 1635 struct info_str info;
1636 struct ahd_initiator_tinfo *tinfo;
1637 struct ahd_tmode_tstate *tstate;
1638 unsigned int target_ppr_options;
1da177e4 1639
73a25462
HR		 1640 BUG_ON(target == CAM_TARGET_WILDCARD);
1641
1642 info.buffer = buf;
1643 info.length = sizeof(buf);
1644 info.offset = 0;
1645 info.pos = 0;
1646 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
1647 target, &tstate);
1648
1649 /*
1650 * Don't bother reporting results while
1651 * negotiations are still pending.
1652 */
1653 if (tinfo->curr.period != tinfo->goal.period
1654 || tinfo->curr.width != tinfo->goal.width
1655 || tinfo->curr.offset != tinfo->goal.offset
1656 || tinfo->curr.ppr_options != tinfo->goal.ppr_options)
1657 if (bootverbose == 0)
1658 break;
1659
1660 /*
1661 * Don't bother reporting results that
1662 * are identical to those last reported.
1663 */
1664 starget = ahd->platform_data->starget[target];
fc789a93 1665 if (starget == NULL)
73a25462
HR		 1666 break;
1667
1668 target_ppr_options =
1669 (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0)
1670 + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0)
3f40d7d6
JB		 1671 + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0)
1672 + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0)
1673 + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0)
1674 + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0)
88ff29a4
JB		 1675 + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0)
1676 + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0);
73a25462
HR		 1677
1678 if (tinfo->curr.period == spi_period(starget)
1679 && tinfo->curr.width == spi_width(starget)
1680 && tinfo->curr.offset == spi_offset(starget)
1681 && tinfo->curr.ppr_options == target_ppr_options)
1682 if (bootverbose == 0)
1683 break;
1684
1685 spi_period(starget) = tinfo->curr.period;
1686 spi_width(starget) = tinfo->curr.width;
1687 spi_offset(starget) = tinfo->curr.offset;
a4b53a11
HR		 1688 spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
1689 spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
1690 spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
3f40d7d6
JB		 1691 spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0;
1692 spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0;
1693 spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0;
1694 spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0;
88ff29a4 1695 spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0;
73a25462 1696 spi_display_xfer_agreement(starget);
1da177e4 1697 break;
73a25462
HR		 1698 }
1699 case AC_SENT_BDR:
1700 {
1701 WARN_ON(lun != CAM_LUN_WILDCARD);
1702 scsi_report_device_reset(ahd->platform_data->host,
1703 channel - 'A', target);
1da177e4
LT		 1704 break;
1705 }
73a25462
HR		 1706 case AC_BUS_RESET:
1707 if (ahd->platform_data->host != NULL) {
1708 scsi_report_bus_reset(ahd->platform_data->host,
1709 channel - 'A');
1da177e4 1710 }
73a25462
HR		 1711 break;
1712 default:
1713 panic("ahd_send_async: Unexpected async event");
1714 }
1da177e4
LT		 1715}
1716
73a25462
HR		 1717/*
1718 * Calls the higher level scsi done function and frees the scb.
1719 */
1720void
1721ahd_done(struct ahd_softc *ahd, struct scb *scb)
1da177e4 1722{
73a25462
HR		 1723 struct scsi_cmnd *cmd;
1724 struct ahd_linux_device *dev;
1da177e4 1725
73a25462
HR		 1726 if ((scb->flags & SCB_ACTIVE) == 0) {
1727 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb));
1728 ahd_dump_card_state(ahd);
1729 panic("Stopping for safety");
1da177e4 1730 }
73a25462
HR		 1731 LIST_REMOVE(scb, pending_links);
1732 cmd = scb->io_ctx;
1733 dev = scb->platform_data->dev;
1734 dev->active--;
1735 dev->openings++;
1736 if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) {
1737 cmd->result &= ~(CAM_DEV_QFRZN << 16);
1738 dev->qfrozen--;
1739 }
1740 ahd_linux_unmap_scb(ahd, scb);
1da177e4
LT		 1741
1742 /*
73a25462
HR		 1743 * Guard against stale sense data.
1744 * The Linux mid-layer assumes that sense
1745 * was retrieved anytime the first byte of
1746 * the sense buffer looks "sane".
1da177e4 1747 */
73a25462
HR		 1748 cmd->sense_buffer[0] = 0;
1749 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
1750 uint32_t amount_xferred;
1da177e4 1751
73a25462
HR		 1752 amount_xferred =
1753 ahd_get_transfer_length(scb) - ahd_get_residual(scb);
1754 if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
1da177e4 1755#ifdef AHD_DEBUG
73a25462
HR		 1756 if ((ahd_debug & AHD_SHOW_MISC) != 0) {
1757 ahd_print_path(ahd, scb);
1758 printf("Set CAM_UNCOR_PARITY\n");
1759 }
1da177e4 1760#endif
73a25462
HR		 1761 ahd_set_transaction_status(scb, CAM_UNCOR_PARITY);
1762#ifdef AHD_REPORT_UNDERFLOWS
1da177e4 1763 /*
73a25462
HR		 1764 * This code is disabled by default as some
1765 * clients of the SCSI system do not properly
1766 * initialize the underflow parameter. This
1767 * results in spurious termination of commands
1768 * that complete as expected (e.g. underflow is
1769 * allowed as command can return variable amounts
1770 * of data.
1da177e4 1771 */
73a25462
HR		 1772 } else if (amount_xferred < scb->io_ctx->underflow) {
1773 u_int i;
1da177e4 1774
73a25462
HR		 1775 ahd_print_path(ahd, scb);
1776 printf("CDB:");
1777 for (i = 0; i < scb->io_ctx->cmd_len; i++)
1778 printf(" 0x%x", scb->io_ctx->cmnd[i]);
1779 printf("\n");
1780 ahd_print_path(ahd, scb);
1781 printf("Saw underflow (%ld of %ld bytes). "
1782 "Treated as error\n",
1783 ahd_get_residual(scb),
1784 ahd_get_transfer_length(scb));
1785 ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
1786#endif
1787 } else {
1788 ahd_set_transaction_status(scb, CAM_REQ_CMP);
1da177e4 1789 }
73a25462
HR		 1790 } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
1791 ahd_linux_handle_scsi_status(ahd, cmd->device, scb);
1792 }
1da177e4 1793
73a25462
HR		 1794 if (dev->openings == 1
1795 && ahd_get_transaction_status(scb) == CAM_REQ_CMP
1796 && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL)
1797 dev->tag_success_count++;
1798 /*
1799 * Some devices deal with temporary internal resource
1800 * shortages by returning queue full. When the queue
1801 * full occurrs, we throttle back. Slowly try to get
1802 * back to our previous queue depth.
1803 */
1804 if ((dev->openings + dev->active) < dev->maxtags
1805 && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) {
1806 dev->tag_success_count = 0;
1807 dev->openings++;
1808 }
1da177e4 1809
73a25462
HR		 1810 if (dev->active == 0)
1811 dev->commands_since_idle_or_otag = 0;
1da177e4 1812
73a25462
HR		 1813 if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
1814 printf("Recovery SCB completes\n");
1815 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
1816 || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
1817 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
7b22da38
HR		 1818
1819 if (ahd->platform_data->eh_done)
1820 complete(ahd->platform_data->eh_done);
1da177e4 1821 }
73a25462
HR		 1822
1823 ahd_free_scb(ahd, scb);
1824 ahd_linux_queue_cmd_complete(ahd, cmd);
1da177e4
LT		 1825}
1826
1827static void
73a25462
HR		 1828ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
1829 struct scsi_device *sdev, struct scb *scb)
1da177e4 1830{
73a25462
HR		 1831 struct ahd_devinfo devinfo;
1832 struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
1da177e4 1833
73a25462
HR		 1834 ahd_compile_devinfo(&devinfo,
1835 ahd->our_id,
1836 sdev->sdev_target->id, sdev->lun,
1837 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1838 ROLE_INITIATOR);
1839
1840 /*
1841 * We don't currently trust the mid-layer to
1842 * properly deal with queue full or busy. So,
1843 * when one occurs, we tell the mid-layer to
1844 * unconditionally requeue the command to us
1845 * so that we can retry it ourselves. We also
1846 * implement our own throttling mechanism so
1847 * we don't clobber the device with too many
1848 * commands.
1849 */
1850 switch (ahd_get_scsi_status(scb)) {
1851 default:
1852 break;
1853 case SCSI_STATUS_CHECK_COND:
1854 case SCSI_STATUS_CMD_TERMINATED:
1855 {
1856 struct scsi_cmnd *cmd;
1da177e4
LT		 1857
1858 /*
73a25462
HR		 1859 * Copy sense information to the OS's cmd
1860 * structure if it is available.
1da177e4 1861 */
73a25462
HR		 1862 cmd = scb->io_ctx;
1863 if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) {
1864 struct scsi_status_iu_header *siu;
1865 u_int sense_size;
1866 u_int sense_offset;
1da177e4 1867
73a25462
HR		 1868 if (scb->flags & SCB_SENSE) {
1869 sense_size = MIN(sizeof(struct scsi_sense_data)
1870 - ahd_get_sense_residual(scb),
1871 sizeof(cmd->sense_buffer));
1872 sense_offset = 0;
1873 } else {
1874 /*
1875 * Copy only the sense data into the provided
1876 * buffer.
1877 */
1878 siu = (struct scsi_status_iu_header *)
1879 scb->sense_data;
1880 sense_size = MIN(scsi_4btoul(siu->sense_length),
1881 sizeof(cmd->sense_buffer));
1882 sense_offset = SIU_SENSE_OFFSET(siu);
1883 }
1da177e4 1884
73a25462
HR		 1885 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
1886 memcpy(cmd->sense_buffer,
1887 ahd_get_sense_buf(ahd, scb)
1888 + sense_offset, sense_size);
1889 cmd->result |= (DRIVER_SENSE << 24);
1da177e4 1890
1da177e4 1891#ifdef AHD_DEBUG
73a25462
HR		 1892 if (ahd_debug & AHD_SHOW_SENSE) {
1893 int i;
1da177e4 1894
73a25462
HR		 1895 printf("Copied %d bytes of sense data at %d:",
1896 sense_size, sense_offset);
1897 for (i = 0; i < sense_size; i++) {
1da177e4 1898 if ((i & 0xF) == 0)
73a25462
HR		 1899 printf("\n");
1900 printf("0x%x ", cmd->sense_buffer[i]);
1da177e4
LT		 1901 }
1902 printf("\n");
1903 }
1904#endif
1da177e4
LT		 1905 }
1906 break;
73a25462
HR		 1907 }
1908 case SCSI_STATUS_QUEUE_FULL:
1909 /*
1910 * By the time the core driver has returned this
1911 * command, all other commands that were queued
1912 * to us but not the device have been returned.
1913 * This ensures that dev->active is equal to
1914 * the number of commands actually queued to
1915 * the device.
1916 */
1917 dev->tag_success_count = 0;
1918 if (dev->active != 0) {
1da177e4 1919 /*
73a25462
HR		 1920 * Drop our opening count to the number
1921 * of commands currently outstanding.
1da177e4 1922 */
73a25462 1923 dev->openings = 0;
1da177e4 1924#ifdef AHD_DEBUG
73a25462
HR		 1925 if ((ahd_debug & AHD_SHOW_QFULL) != 0) {
1926 ahd_print_path(ahd, scb);
1927 printf("Dropping tag count to %d\n",
1928 dev->active);
1da177e4
LT		 1929 }
1930#endif
73a25462 1931 if (dev->active == dev->tags_on_last_queuefull) {
1da177e4 1932
73a25462 1933 dev->last_queuefull_same_count++;
1da177e4 1934 /*
73a25462
HR		 1935 * If we repeatedly see a queue full
1936 * at the same queue depth, this
1937 * device has a fixed number of tag
1938 * slots. Lock in this tag depth
1939 * so we stop seeing queue fulls from
1940 * this device.
1da177e4 1941 */
73a25462
HR		 1942 if (dev->last_queuefull_same_count
1943 == AHD_LOCK_TAGS_COUNT) {
1944 dev->maxtags = dev->active;
1945 ahd_print_path(ahd, scb);
1946 printf("Locking max tag count at %d\n",
1947 dev->active);
1da177e4 1948 }
73a25462
HR		 1949 } else {
1950 dev->tags_on_last_queuefull = dev->active;
1951 dev->last_queuefull_same_count = 0;
1da177e4 1952 }
73a25462
HR		 1953 ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
1954 ahd_set_scsi_status(scb, SCSI_STATUS_OK);
1955 ahd_platform_set_tags(ahd, &devinfo,
1956 (dev->flags & AHD_DEV_Q_BASIC)
1957 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
1da177e4
LT		 1958 break;
1959 }
1da177e4 1960 /*
73a25462
HR		 1961 * Drop down to a single opening, and treat this
1962 * as if the target returned BUSY SCSI status.
1da177e4 1963 */
73a25462
HR		 1964 dev->openings = 1;
1965 ahd_platform_set_tags(ahd, &devinfo,
1966 (dev->flags & AHD_DEV_Q_BASIC)
1967 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
1968 ahd_set_scsi_status(scb, SCSI_STATUS_BUSY);
1969 }
1da177e4
LT		 1970}
1971
73a25462
HR		 1972static void
1973ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
1da177e4 1974{
6902f416
HR		 1975 int status;
1976 int new_status = DID_OK;
1977 int do_fallback = 0;
1978 int scsi_status;
1979
1da177e4 1980 /*
73a25462
HR		 1981 * Map CAM error codes into Linux Error codes. We
1982 * avoid the conversion so that the DV code has the
1983 * full error information available when making
1984 * state change decisions.
1da177e4 1985 */
6902f416
HR		 1986
1987 status = ahd_cmd_get_transaction_status(cmd);
1988 switch (status) {
1989 case CAM_REQ_INPROG:
1990 case CAM_REQ_CMP:
1991 new_status = DID_OK;
1992 break;
1993 case CAM_AUTOSENSE_FAIL:
1994 new_status = DID_ERROR;
1995 /* Fallthrough */
1996 case CAM_SCSI_STATUS_ERROR:
1997 scsi_status = ahd_cmd_get_scsi_status(cmd);
1998
1999 switch(scsi_status) {
2000 case SCSI_STATUS_CMD_TERMINATED:
2001 case SCSI_STATUS_CHECK_COND:
2002 if ((cmd->result >> 24) != DRIVER_SENSE) {
2003 do_fallback = 1;
2004 } else {
2005 struct scsi_sense_data *sense;
2006
2007 sense = (struct scsi_sense_data *)
2008 &cmd->sense_buffer;
2009 if (sense->extra_len >= 5 &&
2010 (sense->add_sense_code == 0x47
2011 || sense->add_sense_code == 0x48))
2012 do_fallback = 1;
2013 }
73a25462
HR		 2014 break;
2015 default:
73a25462
HR		 2016 break;
2017 }
6902f416
HR		 2018 break;
2019 case CAM_REQ_ABORTED:
2020 new_status = DID_ABORT;
2021 break;
2022 case CAM_BUSY:
2023 new_status = DID_BUS_BUSY;
2024 break;
2025 case CAM_REQ_INVALID:
2026 case CAM_PATH_INVALID:
2027 new_status = DID_BAD_TARGET;
2028 break;
2029 case CAM_SEL_TIMEOUT:
2030 new_status = DID_NO_CONNECT;
2031 break;
2032 case CAM_SCSI_BUS_RESET:
2033 case CAM_BDR_SENT:
2034 new_status = DID_RESET;
2035 break;
2036 case CAM_UNCOR_PARITY:
2037 new_status = DID_PARITY;
2038 do_fallback = 1;
2039 break;
2040 case CAM_CMD_TIMEOUT:
2041 new_status = DID_TIME_OUT;
2042 do_fallback = 1;
2043 break;
2044 case CAM_REQ_CMP_ERR:
2045 case CAM_UNEXP_BUSFREE:
2046 case CAM_DATA_RUN_ERR:
2047 new_status = DID_ERROR;
2048 do_fallback = 1;
2049 break;
2050 case CAM_UA_ABORT:
2051 case CAM_NO_HBA:
2052 case CAM_SEQUENCE_FAIL:
2053 case CAM_CCB_LEN_ERR:
2054 case CAM_PROVIDE_FAIL:
2055 case CAM_REQ_TERMIO:
2056 case CAM_UNREC_HBA_ERROR:
2057 case CAM_REQ_TOO_BIG:
2058 new_status = DID_ERROR;
2059 break;
2060 case CAM_REQUEUE_REQ:
2061 new_status = DID_REQUEUE;
2062 break;
2063 default:
2064 /* We should never get here */
2065 new_status = DID_ERROR;
2066 break;
2067 }
73a25462 2068
6902f416
HR		 2069 if (do_fallback) {
2070 printf("%s: device overrun (status %x) on %d:%d:%d\n",
2071 ahd_name(ahd), status, cmd->device->channel,
2072 cmd->device->id, cmd->device->lun);
73a25462
HR		 2073 }
2074
6902f416
HR		 2075 ahd_cmd_set_transaction_status(cmd, new_status);
2076
73a25462 2077 cmd->scsi_done(cmd);
1da177e4
LT		 2078}
2079
1da177e4 2080void
73a25462 2081ahd_freeze_simq(struct ahd_softc *ahd)
1da177e4 2082{
7b22da38 2083 scsi_block_requests(ahd->platform_data->host);
1da177e4
LT		 2084}
2085
1da177e4 2086void
73a25462 2087ahd_release_simq(struct ahd_softc *ahd)
1da177e4 2088{
7b22da38 2089 scsi_unblock_requests(ahd->platform_data->host);
73a25462 2090}
1da177e4 2091
73a25462 2092static int
6902f416 2093ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd)
73a25462
HR		 2094{
2095 struct ahd_softc *ahd;
2096 struct ahd_linux_device *dev;
2097 struct scb *pending_scb;
2098 u_int saved_scbptr;
2099 u_int active_scbptr;
2100 u_int last_phase;
2101 u_int saved_scsiid;
2102 u_int cdb_byte;
2103 int retval;
2104 int was_paused;
2105 int paused;
2106 int wait;
2107 int disconnected;
2108 ahd_mode_state saved_modes;
4065a413 2109 unsigned long flags;
73a25462
HR		 2110
2111 pending_scb = NULL;
2112 paused = FALSE;
2113 wait = FALSE;
2114 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
2115
017560fc 2116 scmd_printk(KERN_INFO, cmd,
6902f416 2117 "Attempting to queue an ABORT message:");
73a25462
HR		 2118
2119 printf("CDB:");
2120 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
2121 printf(" 0x%x", cmd->cmnd[cdb_byte]);
2122 printf("\n");
2123
4065a413 2124 ahd_lock(ahd, &flags);
1da177e4 2125
1da177e4 2126 /*
73a25462
HR		 2127 * First determine if we currently own this command.
2128 * Start by searching the device queue. If not found
2129 * there, check the pending_scb list. If not found
2130 * at all, and the system wanted us to just abort the
2131 * command, return success.
1da177e4 2132 */
73a25462
HR		 2133 dev = scsi_transport_device_data(cmd->device);
2134
2135 if (dev == NULL) {
2136 /*
2137 * No target device for this command exists,
2138 * so we must not still own the command.
2139 */
017560fc 2140 scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
73a25462
HR		 2141 retval = SUCCESS;
2142 goto no_cmd;
2143 }
1da177e4 2144
1da177e4 2145 /*
73a25462 2146 * See if we can find a matching cmd in the pending list.
1da177e4 2147 */
73a25462
HR		 2148 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
2149 if (pending_scb->io_ctx == cmd)
2150 break;
1da177e4
LT		 2151 }
2152
73a25462 2153 if (pending_scb == NULL) {
017560fc 2154 scmd_printk(KERN_INFO, cmd, "Command not found\n");
73a25462 2155 goto no_cmd;
1da177e4 2156 }
1da177e4 2157
73a25462
HR		 2158 if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
2159 /*
2160 * We can't queue two recovery actions using the same SCB
2161 */
2162 retval = FAILED;
2163 goto done;
2164 }
1da177e4 2165
1da177e4 2166 /*
73a25462
HR		 2167 * Ensure that the card doesn't do anything
2168 * behind our back. Also make sure that we
2169 * didn't "just" miss an interrupt that would
2170 * affect this cmd.
1da177e4 2171 */
73a25462
HR		 2172 was_paused = ahd_is_paused(ahd);
2173 ahd_pause_and_flushwork(ahd);
2174 paused = TRUE;
1da177e4 2175
73a25462 2176 if ((pending_scb->flags & SCB_ACTIVE) == 0) {
017560fc 2177 scmd_printk(KERN_INFO, cmd, "Command already completed\n");
73a25462
HR		 2178 goto no_cmd;
2179 }
1da177e4 2180
73a25462
HR		 2181 printf("%s: At time of recovery, card was %spaused\n",
2182 ahd_name(ahd), was_paused ? "" : "not ");
2183 ahd_dump_card_state(ahd);
1da177e4 2184
73a25462 2185 disconnected = TRUE;
6902f416
HR		 2186 if (ahd_search_qinfifo(ahd, cmd->device->id,
2187 cmd->device->channel + 'A',
2188 cmd->device->lun,
2189 pending_scb->hscb->tag,
2190 ROLE_INITIATOR, CAM_REQ_ABORTED,
2191 SEARCH_COMPLETE) > 0) {
2192 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2193 ahd_name(ahd), cmd->device->channel,
2194 cmd->device->id, cmd->device->lun);
2195 retval = SUCCESS;
2196 goto done;
73a25462 2197 }
1da177e4 2198
73a25462
HR		 2199 saved_modes = ahd_save_modes(ahd);
2200 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
2201 last_phase = ahd_inb(ahd, LASTPHASE);
2202 saved_scbptr = ahd_get_scbptr(ahd);
2203 active_scbptr = saved_scbptr;
6902f416 2204 if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
73a25462 2205 struct scb *bus_scb;
1da177e4 2206
73a25462
HR		 2207 bus_scb = ahd_lookup_scb(ahd, active_scbptr);
2208 if (bus_scb == pending_scb)
2209 disconnected = FALSE;
1da177e4 2210 }
73a25462
HR		 2211
2212 /*
2213 * At this point, pending_scb is the scb associated with the
2214 * passed in command. That command is currently active on the
2215 * bus or is in the disconnected state.
2216 */
2217 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
6902f416
HR		 2218 if (last_phase != P_BUSFREE
2219 && SCB_GET_TAG(pending_scb) == active_scbptr) {
73a25462 2220
1da177e4 2221 /*
73a25462
HR		 2222 * We're active on the bus, so assert ATN
2223 * and hope that the target responds.
1da177e4 2224 */
73a25462 2225 pending_scb = ahd_lookup_scb(ahd, active_scbptr);
6902f416 2226 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
73a25462
HR		 2227 ahd_outb(ahd, MSG_OUT, HOST_MSG);
2228 ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
6902f416 2229 scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n");
73a25462
HR		 2230 wait = TRUE;
2231 } else if (disconnected) {
2232
2233 /*
2234 * Actually re-queue this SCB in an attempt
2235 * to select the device before it reconnects.
2236 */
6902f416 2237 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
73a25462
HR		 2238 ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
2239 pending_scb->hscb->cdb_len = 0;
2240 pending_scb->hscb->task_attribute = 0;
2241 pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
2242
2243 if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
1da177e4 2244 /*
73a25462
HR		 2245 * Mark the SCB has having an outstanding
2246 * task management function. Should the command
2247 * complete normally before the task management
2248 * function can be sent, the host will be notified
2249 * to abort our requeued SCB.
1da177e4 2250 */
73a25462
HR		 2251 ahd_outb(ahd, SCB_TASK_MANAGEMENT,
2252 pending_scb->hscb->task_management);
2253 } else {
2254 /*
2255 * If non-packetized, set the MK_MESSAGE control
2256 * bit indicating that we desire to send a message.
2257 * We also set the disconnected flag since there is
2258 * no guarantee that our SCB control byte matches
2259 * the version on the card. We don't want the
2260 * sequencer to abort the command thinking an
2261 * unsolicited reselection occurred.
2262 */
2263 pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
2264
2265 /*
2266 * The sequencer will never re-reference the
2267 * in-core SCB. To make sure we are notified
2268 * during reslection, set the MK_MESSAGE flag in
2269 * the card's copy of the SCB.
2270 */
2271 ahd_outb(ahd, SCB_CONTROL,
2272 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
1da177e4 2273 }
73a25462 2274
1da177e4 2275 /*
73a25462
HR		 2276 * Clear out any entries in the QINFIFO first
2277 * so we are the next SCB for this target
2278 * to run.
1da177e4 2279 */
73a25462
HR		 2280 ahd_search_qinfifo(ahd, cmd->device->id,
2281 cmd->device->channel + 'A', cmd->device->lun,
2282 SCB_LIST_NULL, ROLE_INITIATOR,
2283 CAM_REQUEUE_REQ, SEARCH_COMPLETE);
2284 ahd_qinfifo_requeue_tail(ahd, pending_scb);
2285 ahd_set_scbptr(ahd, saved_scbptr);
2286 ahd_print_path(ahd, pending_scb);
2287 printf("Device is disconnected, re-queuing SCB\n");
2288 wait = TRUE;
2289 } else {
017560fc 2290 scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n");
73a25462
HR		 2291 retval = FAILED;
2292 goto done;
1da177e4 2293 }
1da177e4 2294
73a25462 2295no_cmd:
1da177e4 2296 /*
73a25462
HR		 2297 * Our assumption is that if we don't have the command, no
2298 * recovery action was required, so we return success. Again,
2299 * the semantics of the mid-layer recovery engine are not
2300 * well defined, so this may change in time.
1da177e4 2301 */
73a25462
HR		 2302 retval = SUCCESS;
2303done:
2304 if (paused)
2305 ahd_unpause(ahd);
2306 if (wait) {
7b22da38 2307 DECLARE_COMPLETION(done);
1da177e4 2308
7b22da38 2309 ahd->platform_data->eh_done = &done;
4065a413
CH		 2310 ahd_unlock(ahd, &flags);
2311
11668bb6 2312 printf("%s: Recovery code sleeping\n", ahd_name(ahd));
7b22da38
HR		 2313 if (!wait_for_completion_timeout(&done, 5 * HZ)) {
2314 ahd_lock(ahd, &flags);
2315 ahd->platform_data->eh_done = NULL;
2316 ahd_unlock(ahd, &flags);
11668bb6
HR		 2317 printf("%s: Timer Expired (active %d)\n",
2318 ahd_name(ahd), dev->active);
73a25462 2319 retval = FAILED;
1da177e4 2320 }
7b22da38 2321 printf("Recovery code awake\n");
eb221849
HR		 2322 } else
2323 ahd_unlock(ahd, &flags);
2324
7b22da38
HR		 2325 if (retval != SUCCESS)
2326 printf("%s: Command abort returning 0x%x\n",
2327 ahd_name(ahd), retval);
2328
2329 return retval;
1da177e4
LT		 2330}
2331
73a25462 2332static void ahd_linux_set_width(struct scsi_target *starget, int width)
1da177e4 2333{
73a25462
HR		 2334 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2335 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2336 struct ahd_devinfo devinfo;
2337 unsigned long flags;
1da177e4 2338
73a25462
HR		 2339 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2340 starget->channel + 'A', ROLE_INITIATOR);
2341 ahd_lock(ahd, &flags);
2342 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE);
2343 ahd_unlock(ahd, &flags);
2344}
2345
2346static void ahd_linux_set_period(struct scsi_target *starget, int period)
2347{
2348 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2349 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2350 struct ahd_tmode_tstate *tstate;
2351 struct ahd_initiator_tinfo *tinfo
2352 = ahd_fetch_transinfo(ahd,
2353 starget->channel + 'A',
2354 shost->this_id, starget->id, &tstate);
2355 struct ahd_devinfo devinfo;
2356 unsigned int ppr_options = tinfo->goal.ppr_options;
a4b53a11 2357 unsigned int dt;
73a25462
HR		 2358 unsigned long flags;
2359 unsigned long offset = tinfo->goal.offset;
1da177e4 2360
a4b53a11
HR		 2361#ifdef AHD_DEBUG
2362 if ((ahd_debug & AHD_SHOW_DV) != 0)
2363 printf("%s: set period to %d\n", ahd_name(ahd), period);
2364#endif
73a25462
HR		 2365 if (offset == 0)
2366 offset = MAX_OFFSET;
1da177e4 2367
73a25462
HR		 2368 if (period < 8)
2369 period = 8;
2370 if (period < 10) {
2371 ppr_options |= MSG_EXT_PPR_DT_REQ;
2372 if (period == 8)
2373 ppr_options |= MSG_EXT_PPR_IU_REQ;
1da177e4
LT		 2374 }
2375
a4b53a11
HR		 2376 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2377
73a25462
HR		 2378 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2379 starget->channel + 'A', ROLE_INITIATOR);
1da177e4 2380
73a25462
HR		 2381 /* all PPR requests apart from QAS require wide transfers */
2382 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
2383 if (spi_width(starget) == 0)
2384 ppr_options &= MSG_EXT_PPR_QAS_REQ;
1da177e4 2385 }
73a25462 2386
a4b53a11
HR		 2387 ahd_find_syncrate(ahd, &period, &ppr_options,
2388 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2389
73a25462
HR		 2390 ahd_lock(ahd, &flags);
2391 ahd_set_syncrate(ahd, &devinfo, period, offset,
2392 ppr_options, AHD_TRANS_GOAL, FALSE);
2393 ahd_unlock(ahd, &flags);
1da177e4
LT		 2394}
2395
73a25462 2396static void ahd_linux_set_offset(struct scsi_target *starget, int offset)
1da177e4 2397{
73a25462
HR		 2398 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2399 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2400 struct ahd_tmode_tstate *tstate;
2401 struct ahd_initiator_tinfo *tinfo
2402 = ahd_fetch_transinfo(ahd,
2403 starget->channel + 'A',
2404 shost->this_id, starget->id, &tstate);
2405 struct ahd_devinfo devinfo;
2406 unsigned int ppr_options = 0;
2407 unsigned int period = 0;
a4b53a11 2408 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
73a25462
HR		 2409 unsigned long flags;
2410
a4b53a11
HR		 2411#ifdef AHD_DEBUG
2412 if ((ahd_debug & AHD_SHOW_DV) != 0)
2413 printf("%s: set offset to %d\n", ahd_name(ahd), offset);
2414#endif
2415
73a25462
HR		 2416 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2417 starget->channel + 'A', ROLE_INITIATOR);
2418 if (offset != 0) {
2419 period = tinfo->goal.period;
2420 ppr_options = tinfo->goal.ppr_options;
a4b53a11
HR		 2421 ahd_find_syncrate(ahd, &period, &ppr_options,
2422 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
1da177e4 2423 }
a4b53a11 2424
73a25462
HR		 2425 ahd_lock(ahd, &flags);
2426 ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
2427 AHD_TRANS_GOAL, FALSE);
2428 ahd_unlock(ahd, &flags);
1da177e4
LT		 2429}
2430
73a25462 2431static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
1da177e4 2432{
73a25462
HR		 2433 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2434 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2435 struct ahd_tmode_tstate *tstate;
2436 struct ahd_initiator_tinfo *tinfo
2437 = ahd_fetch_transinfo(ahd,
2438 starget->channel + 'A',
2439 shost->this_id, starget->id, &tstate);
2440 struct ahd_devinfo devinfo;
2441 unsigned int ppr_options = tinfo->goal.ppr_options
2442 & ~MSG_EXT_PPR_DT_REQ;
2443 unsigned int period = tinfo->goal.period;
52b5cfb3 2444 unsigned int width = tinfo->goal.width;
73a25462
HR		 2445 unsigned long flags;
2446
a4b53a11
HR		 2447#ifdef AHD_DEBUG
2448 if ((ahd_debug & AHD_SHOW_DV) != 0)
2449 printf("%s: %s DT\n", ahd_name(ahd),
2450 dt ? "enabling" : "disabling");
2451#endif
73a25462
HR		 2452 if (dt) {
2453 ppr_options |= MSG_EXT_PPR_DT_REQ;
52b5cfb3
HR		 2454 if (!width)
2455 ahd_linux_set_width(starget, 1);
a4b53a11
HR		 2456 } else {
2457 if (period <= 9)
2458 period = 10; /* If resetting DT, period must be >= 25ns */
2459 /* IU is invalid without DT set */
2460 ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2461 }
73a25462
HR		 2462 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2463 starget->channel + 'A', ROLE_INITIATOR);
2464 ahd_find_syncrate(ahd, &period, &ppr_options,
2465 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2466
73a25462
HR		 2467 ahd_lock(ahd, &flags);
2468 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2469 ppr_options, AHD_TRANS_GOAL, FALSE);
2470 ahd_unlock(ahd, &flags);
1da177e4
LT		 2471}
2472
73a25462 2473static void ahd_linux_set_qas(struct scsi_target *starget, int qas)
1da177e4 2474{
73a25462
HR		 2475 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2476 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2477 struct ahd_tmode_tstate *tstate;
2478 struct ahd_initiator_tinfo *tinfo
2479 = ahd_fetch_transinfo(ahd,
2480 starget->channel + 'A',
2481 shost->this_id, starget->id, &tstate);
2482 struct ahd_devinfo devinfo;
2483 unsigned int ppr_options = tinfo->goal.ppr_options
2484 & ~MSG_EXT_PPR_QAS_REQ;
2485 unsigned int period = tinfo->goal.period;
a4b53a11 2486 unsigned int dt;
73a25462
HR		 2487 unsigned long flags;
2488
a4b53a11
HR		 2489#ifdef AHD_DEBUG
2490 if ((ahd_debug & AHD_SHOW_DV) != 0)
2491 printf("%s: %s QAS\n", ahd_name(ahd),
2492 qas ? "enabling" : "disabling");
2493#endif
2494
2495 if (qas) {
2496 ppr_options |= MSG_EXT_PPR_QAS_REQ;
2497 }
2498
2499 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
73a25462
HR		 2500
2501 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2502 starget->channel + 'A', ROLE_INITIATOR);
2503 ahd_find_syncrate(ahd, &period, &ppr_options,
2504 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2505
73a25462
HR		 2506 ahd_lock(ahd, &flags);
2507 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2508 ppr_options, AHD_TRANS_GOAL, FALSE);
2509 ahd_unlock(ahd, &flags);
1da177e4
LT		 2510}
2511
73a25462 2512static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
1da177e4 2513{
73a25462
HR		 2514 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2515 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2516 struct ahd_tmode_tstate *tstate;
2517 struct ahd_initiator_tinfo *tinfo
2518 = ahd_fetch_transinfo(ahd,
2519 starget->channel + 'A',
2520 shost->this_id, starget->id, &tstate);
2521 struct ahd_devinfo devinfo;
2522 unsigned int ppr_options = tinfo->goal.ppr_options
2523 & ~MSG_EXT_PPR_IU_REQ;
2524 unsigned int period = tinfo->goal.period;
a4b53a11 2525 unsigned int dt;
73a25462
HR		 2526 unsigned long flags;
2527
a4b53a11
HR		 2528#ifdef AHD_DEBUG
2529 if ((ahd_debug & AHD_SHOW_DV) != 0)
2530 printf("%s: %s IU\n", ahd_name(ahd),
2531 iu ? "enabling" : "disabling");
2532#endif
2533
2534 if (iu) {
73a25462 2535 ppr_options |= MSG_EXT_PPR_IU_REQ;
a4b53a11
HR		 2536 ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
2537 }
2538
2539 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
73a25462
HR		 2540
2541 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2542 starget->channel + 'A', ROLE_INITIATOR);
2543 ahd_find_syncrate(ahd, &period, &ppr_options,
2544 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2545
73a25462
HR		 2546 ahd_lock(ahd, &flags);
2547 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2548 ppr_options, AHD_TRANS_GOAL, FALSE);
2549 ahd_unlock(ahd, &flags);
2550}
1da177e4 2551
73a25462
HR		 2552static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
2553{
2554 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2555 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2556 struct ahd_tmode_tstate *tstate;
2557 struct ahd_initiator_tinfo *tinfo
2558 = ahd_fetch_transinfo(ahd,
2559 starget->channel + 'A',
2560 shost->this_id, starget->id, &tstate);
2561 struct ahd_devinfo devinfo;
2562 unsigned int ppr_options = tinfo->goal.ppr_options
2563 & ~MSG_EXT_PPR_RD_STRM;
2564 unsigned int period = tinfo->goal.period;
2565 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2566 unsigned long flags;
2567
a4b53a11
HR		 2568#ifdef AHD_DEBUG
2569 if ((ahd_debug & AHD_SHOW_DV) != 0)
2570 printf("%s: %s Read Streaming\n", ahd_name(ahd),
2571 rdstrm ? "enabling" : "disabling");
2572#endif
2573
73a25462
HR		 2574 if (rdstrm)
2575 ppr_options |= MSG_EXT_PPR_RD_STRM;
2576
2577 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2578 starget->channel + 'A', ROLE_INITIATOR);
2579 ahd_find_syncrate(ahd, &period, &ppr_options,
2580 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2581
a4b53a11
HR		 2582 ahd_lock(ahd, &flags);
2583 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2584 ppr_options, AHD_TRANS_GOAL, FALSE);
2585 ahd_unlock(ahd, &flags);
2586}
2587
2588static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
2589{
2590 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2591 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2592 struct ahd_tmode_tstate *tstate;
2593 struct ahd_initiator_tinfo *tinfo
2594 = ahd_fetch_transinfo(ahd,
2595 starget->channel + 'A',
2596 shost->this_id, starget->id, &tstate);
2597 struct ahd_devinfo devinfo;
2598 unsigned int ppr_options = tinfo->goal.ppr_options
2599 & ~MSG_EXT_PPR_WR_FLOW;
2600 unsigned int period = tinfo->goal.period;
2601 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2602 unsigned long flags;
2603
2604#ifdef AHD_DEBUG
2605 if ((ahd_debug & AHD_SHOW_DV) != 0)
2606 printf("%s: %s Write Flow Control\n", ahd_name(ahd),
2607 wrflow ? "enabling" : "disabling");
2608#endif
2609
2610 if (wrflow)
2611 ppr_options |= MSG_EXT_PPR_WR_FLOW;
2612
2613 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2614 starget->channel + 'A', ROLE_INITIATOR);
2615 ahd_find_syncrate(ahd, &period, &ppr_options,
2616 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2617
a4b53a11
HR		 2618 ahd_lock(ahd, &flags);
2619 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2620 ppr_options, AHD_TRANS_GOAL, FALSE);
2621 ahd_unlock(ahd, &flags);
2622}
2623
2624static void ahd_linux_set_rti(struct scsi_target *starget, int rti)
2625{
2626 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2627 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2628 struct ahd_tmode_tstate *tstate;
2629 struct ahd_initiator_tinfo *tinfo
2630 = ahd_fetch_transinfo(ahd,
2631 starget->channel + 'A',
2632 shost->this_id, starget->id, &tstate);
2633 struct ahd_devinfo devinfo;
2634 unsigned int ppr_options = tinfo->goal.ppr_options
2635 & ~MSG_EXT_PPR_RTI;
2636 unsigned int period = tinfo->goal.period;
2637 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2638 unsigned long flags;
2639
2640 if ((ahd->features & AHD_RTI) == 0) {
2641#ifdef AHD_DEBUG
2642 if ((ahd_debug & AHD_SHOW_DV) != 0)
2643 printf("%s: RTI not available\n", ahd_name(ahd));
2644#endif
2645 return;
2646 }
2647
2648#ifdef AHD_DEBUG
2649 if ((ahd_debug & AHD_SHOW_DV) != 0)
2650 printf("%s: %s RTI\n", ahd_name(ahd),
2651 rti ? "enabling" : "disabling");
2652#endif
2653
2654 if (rti)
2655 ppr_options |= MSG_EXT_PPR_RTI;
2656
2657 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2658 starget->channel + 'A', ROLE_INITIATOR);
2659 ahd_find_syncrate(ahd, &period, &ppr_options,
2660 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2661
a4b53a11
HR		 2662 ahd_lock(ahd, &flags);
2663 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2664 ppr_options, AHD_TRANS_GOAL, FALSE);
2665 ahd_unlock(ahd, &flags);
2666}
2667
2668static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
2669{
2670 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2671 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2672 struct ahd_tmode_tstate *tstate;
2673 struct ahd_initiator_tinfo *tinfo
2674 = ahd_fetch_transinfo(ahd,
2675 starget->channel + 'A',
2676 shost->this_id, starget->id, &tstate);
2677 struct ahd_devinfo devinfo;
2678 unsigned int ppr_options = tinfo->goal.ppr_options
2679 & ~MSG_EXT_PPR_PCOMP_EN;
2680 unsigned int period = tinfo->goal.period;
2681 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2682 unsigned long flags;
2683
2684#ifdef AHD_DEBUG
2685 if ((ahd_debug & AHD_SHOW_DV) != 0)
2686 printf("%s: %s Precompensation\n", ahd_name(ahd),
2687 pcomp ? "Enable" : "Disable");
2688#endif
2689
2690 if (pcomp)
2691 ppr_options |= MSG_EXT_PPR_PCOMP_EN;
2692
2693 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2694 starget->channel + 'A', ROLE_INITIATOR);
2695 ahd_find_syncrate(ahd, &period, &ppr_options,
2696 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2697
73a25462
HR		 2698 ahd_lock(ahd, &flags);
2699 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2700 ppr_options, AHD_TRANS_GOAL, FALSE);
2701 ahd_unlock(ahd, &flags);
1da177e4
LT		 2702}
2703
88ff29a4
JB		 2704static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
2705{
2706 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2707 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2708 struct ahd_tmode_tstate *tstate;
2709 struct ahd_initiator_tinfo *tinfo
2710 = ahd_fetch_transinfo(ahd,
2711 starget->channel + 'A',
2712 shost->this_id, starget->id, &tstate);
2713 struct ahd_devinfo devinfo;
2714 unsigned int ppr_options = tinfo->goal.ppr_options
2715 & ~MSG_EXT_PPR_HOLD_MCS;
2716 unsigned int period = tinfo->goal.period;
2717 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2718 unsigned long flags;
2719
2720 if (hold)
2721 ppr_options |= MSG_EXT_PPR_HOLD_MCS;
2722
2723 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2724 starget->channel + 'A', ROLE_INITIATOR);
2725 ahd_find_syncrate(ahd, &period, &ppr_options,
2726 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2727
2728 ahd_lock(ahd, &flags);
2729 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2730 ppr_options, AHD_TRANS_GOAL, FALSE);
2731 ahd_unlock(ahd, &flags);
2732}
2733
2734
2735
73a25462
HR		 2736static struct spi_function_template ahd_linux_transport_functions = {
2737 .set_offset = ahd_linux_set_offset,
2738 .show_offset = 1,
2739 .set_period = ahd_linux_set_period,
2740 .show_period = 1,
2741 .set_width = ahd_linux_set_width,
2742 .show_width = 1,
2743 .set_dt = ahd_linux_set_dt,
2744 .show_dt = 1,
2745 .set_iu = ahd_linux_set_iu,
2746 .show_iu = 1,
2747 .set_qas = ahd_linux_set_qas,
2748 .show_qas = 1,
2749 .set_rd_strm = ahd_linux_set_rd_strm,
2750 .show_rd_strm = 1,
a4b53a11
HR		 2751 .set_wr_flow = ahd_linux_set_wr_flow,
2752 .show_wr_flow = 1,
2753 .set_rti = ahd_linux_set_rti,
2754 .show_rti = 1,
2755 .set_pcomp_en = ahd_linux_set_pcomp_en,
2756 .show_pcomp_en = 1,
88ff29a4
JB		 2757 .set_hold_mcs = ahd_linux_set_hold_mcs,
2758 .show_hold_mcs = 1,
73a25462
HR		 2759};
2760
1da177e4
LT		 2761static int __init
2762ahd_linux_init(void)
2763{
85a46523
CH		 2764 int error = 0;
2765
2766 /*
2767 * If we've been passed any parameters, process them now.
2768 */
2769 if (aic79xx)
2770 aic79xx_setup(aic79xx);
2771
2772 ahd_linux_transport_template =
2773 spi_attach_transport(&ahd_linux_transport_functions);
73a25462
HR		 2774 if (!ahd_linux_transport_template)
2775 return -ENODEV;
85a46523 2776
73a25462
HR		 2777 scsi_transport_reserve_target(ahd_linux_transport_template,
2778 sizeof(struct ahd_linux_target));
2779 scsi_transport_reserve_device(ahd_linux_transport_template,
2780 sizeof(struct ahd_linux_device));
a80b3424 2781
85a46523
CH		 2782 error = ahd_linux_pci_init();
2783 if (error)
2784 spi_release_transport(ahd_linux_transport_template);
2785 return error;
1da177e4
LT		 2786}
2787
2788static void __exit
2789ahd_linux_exit(void)
2790{
1da177e4 2791 ahd_linux_pci_exit();
73a25462 2792 spi_release_transport(ahd_linux_transport_template);
1da177e4
LT		 2793}
2794
2795module_init(ahd_linux_init);
2796module_exit(ahd_linux_exit);
Linux kernel - Deliverables
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