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[SCSI] HP XP devinfo update
[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;
f41b5cec 785 unsigned long flags;
1da177e4 786
1da177e4 787 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
73a25462
HR		 788#ifdef AHD_DEBUG
789 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
790 printf("%s: Bus reset called for cmd %p\n",
791 ahd_name(ahd), cmd);
792#endif
f41b5cec
HR		 793 ahd_lock(ahd, &flags);
794
422c0d61 795 found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A',
73a25462 796 /*initiate reset*/TRUE);
f41b5cec 797 ahd_unlock(ahd, &flags);
1da177e4 798
73a25462
HR		 799 if (bootverbose)
800 printf("%s: SCSI bus reset delivered. "
801 "%d SCBs aborted.\n", ahd_name(ahd), found);
1da177e4 802
73a25462
HR		 803 return (SUCCESS);
804}
1da177e4 805
73a25462
HR		 806struct scsi_host_template aic79xx_driver_template = {
807 .module = THIS_MODULE,
808 .name = "aic79xx",
85a46523 809 .proc_name = "aic79xx",
73a25462
HR		 810 .proc_info = ahd_linux_proc_info,
811 .info = ahd_linux_info,
812 .queuecommand = ahd_linux_queue,
813 .eh_abort_handler = ahd_linux_abort,
814 .eh_device_reset_handler = ahd_linux_dev_reset,
815 .eh_bus_reset_handler = ahd_linux_bus_reset,
816#if defined(__i386__)
817 .bios_param = ahd_linux_biosparam,
818#endif
819 .can_queue = AHD_MAX_QUEUE,
820 .this_id = -1,
821 .cmd_per_lun = 2,
822 .use_clustering = ENABLE_CLUSTERING,
823 .slave_alloc = ahd_linux_slave_alloc,
824 .slave_configure = ahd_linux_slave_configure,
825 .slave_destroy = ahd_linux_slave_destroy,
826 .target_alloc = ahd_linux_target_alloc,
827 .target_destroy = ahd_linux_target_destroy,
828};
1da177e4 829
73a25462
HR		 830/******************************** Bus DMA *************************************/
831int
832ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent,
833 bus_size_t alignment, bus_size_t boundary,
834 dma_addr_t lowaddr, dma_addr_t highaddr,
835 bus_dma_filter_t *filter, void *filterarg,
836 bus_size_t maxsize, int nsegments,
837 bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
838{
839 bus_dma_tag_t dmat;
840
841 dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT);
842 if (dmat == NULL)
843 return (ENOMEM);
1da177e4 844
1da177e4 845 /*
73a25462
HR		 846 * Linux is very simplistic about DMA memory. For now don't
847 * maintain all specification information. Once Linux supplies
848 * better facilities for doing these operations, or the
849 * needs of this particular driver change, we might need to do
850 * more here.
1da177e4 851 */
73a25462
HR		 852 dmat->alignment = alignment;
853 dmat->boundary = boundary;
854 dmat->maxsize = maxsize;
855 *ret_tag = dmat;
856 return (0);
857}
1da177e4 858
73a25462
HR		 859void
860ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat)
861{
862 free(dmat, M_DEVBUF);
863}
1da177e4 864
73a25462
HR		 865int
866ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr,
867 int flags, bus_dmamap_t *mapp)
868{
869 *vaddr = pci_alloc_consistent(ahd->dev_softc,
870 dmat->maxsize, mapp);
871 if (*vaddr == NULL)
872 return (ENOMEM);
873 return(0);
874}
1da177e4 875
73a25462
HR		 876void
877ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat,
878 void* vaddr, bus_dmamap_t map)
879{
880 pci_free_consistent(ahd->dev_softc, dmat->maxsize,
881 vaddr, map);
882}
883
884int
885ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map,
886 void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb,
887 void *cb_arg, int flags)
888{
1da177e4 889 /*
73a25462
HR		 890 * Assume for now that this will only be used during
891 * initialization and not for per-transaction buffer mapping.
1da177e4 892 */
73a25462 893 bus_dma_segment_t stack_sg;
1da177e4 894
73a25462
HR		 895 stack_sg.ds_addr = map;
896 stack_sg.ds_len = dmat->maxsize;
897 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
898 return (0);
899}
1da177e4 900
73a25462
HR		 901void
902ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
903{
904}
1da177e4 905
73a25462
HR		 906int
907ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
908{
909 /* Nothing to do */
910 return (0);
911}
1da177e4 912
73a25462 913/********************* Platform Dependent Functions ***************************/
73a25462
HR		 914static void
915ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value)
916{
1da177e4 917
73a25462 918 if ((instance >= 0)
6391a113 919 && (instance < ARRAY_SIZE(aic79xx_iocell_info))) {
73a25462
HR		 920 uint8_t *iocell_info;
921
922 iocell_info = (uint8_t*)&aic79xx_iocell_info[instance];
923 iocell_info[index] = value & 0xFFFF;
924 if (bootverbose)
925 printf("iocell[%d:%ld] = %d\n", instance, index, value);
1da177e4 926 }
73a25462 927}
1da177e4 928
73a25462
HR		 929static void
930ahd_linux_setup_tag_info_global(char *p)
931{
932 int tags, i, j;
1da177e4 933
73a25462
HR		 934 tags = simple_strtoul(p + 1, NULL, 0) & 0xff;
935 printf("Setting Global Tags= %d\n", tags);
936
6391a113 937 for (i = 0; i < ARRAY_SIZE(aic79xx_tag_info); i++) {
73a25462
HR		 938 for (j = 0; j < AHD_NUM_TARGETS; j++) {
939 aic79xx_tag_info[i].tag_commands[j] = tags;
1da177e4 940 }
1da177e4 941 }
1da177e4
LT		 942}
943
1da177e4 944static void
73a25462 945ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
1da177e4 946{
1da177e4 947
73a25462 948 if ((instance >= 0) && (targ >= 0)
6391a113 949 && (instance < ARRAY_SIZE(aic79xx_tag_info))
73a25462
HR		 950 && (targ < AHD_NUM_TARGETS)) {
951 aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF;
952 if (bootverbose)
953 printf("tag_info[%d:%d] = %d\n", instance, targ, value);
1da177e4 954 }
1da177e4
LT		 955}
956
1ff92730
CH		 957static char *
958ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth,
959 void (*callback)(u_long, int, int, int32_t),
960 u_long callback_arg)
961{
962 char *tok_end;
963 char *tok_end2;
964 int i;
965 int instance;
966 int targ;
967 int done;
968 char tok_list[] = {'.', ',', '{', '}', '\0'};
969
970 /* All options use a ':' name/arg separator */
971 if (*opt_arg != ':')
972 return (opt_arg);
973 opt_arg++;
974 instance = -1;
975 targ = -1;
976 done = FALSE;
977 /*
978 * Restore separator that may be in
979 * the middle of our option argument.
980 */
981 tok_end = strchr(opt_arg, '\0');
982 if (tok_end < end)
983 *tok_end = ',';
984 while (!done) {
985 switch (*opt_arg) {
986 case '{':
987 if (instance == -1) {
988 instance = 0;
989 } else {
990 if (depth > 1) {
991 if (targ == -1)
992 targ = 0;
993 } else {
994 printf("Malformed Option %s\n",
995 opt_name);
996 done = TRUE;
997 }
998 }
999 opt_arg++;
1000 break;
1001 case '}':
1002 if (targ != -1)
1003 targ = -1;
1004 else if (instance != -1)
1005 instance = -1;
1006 opt_arg++;
1007 break;
1008 case ',':
1009 case '.':
1010 if (instance == -1)
1011 done = TRUE;
1012 else if (targ >= 0)
1013 targ++;
1014 else if (instance >= 0)
1015 instance++;
1016 opt_arg++;
1017 break;
1018 case '\0':
1019 done = TRUE;
1020 break;
1021 default:
1022 tok_end = end;
1023 for (i = 0; tok_list[i]; i++) {
1024 tok_end2 = strchr(opt_arg, tok_list[i]);
1025 if ((tok_end2) && (tok_end2 < tok_end))
1026 tok_end = tok_end2;
1027 }
1028 callback(callback_arg, instance, targ,
1029 simple_strtol(opt_arg, NULL, 0));
1030 opt_arg = tok_end;
1031 break;
1032 }
1033 }
1034 return (opt_arg);
1035}
1036
1da177e4 1037/*
73a25462
HR		 1038 * Handle Linux boot parameters. This routine allows for assigning a value
1039 * to a parameter with a ':' between the parameter and the value.
1040 * ie. aic79xx=stpwlev:1,extended
1da177e4
LT		 1041 */
1042static int
73a25462 1043aic79xx_setup(char *s)
1da177e4 1044{
73a25462
HR		 1045 int i, n;
1046 char *p;
1047 char *end;
1da177e4 1048
73a25462
HR		 1049 static struct {
1050 const char *name;
1051 uint32_t *flag;
1052 } options[] = {
1053 { "extended", &aic79xx_extended },
1054 { "no_reset", &aic79xx_no_reset },
1055 { "verbose", &aic79xx_verbose },
1056 { "allow_memio", &aic79xx_allow_memio},
1da177e4 1057#ifdef AHD_DEBUG
73a25462 1058 { "debug", &ahd_debug },
1da177e4 1059#endif
73a25462
HR		 1060 { "reverse_scan", &aic79xx_reverse_scan },
1061 { "periodic_otag", &aic79xx_periodic_otag },
1062 { "pci_parity", &aic79xx_pci_parity },
1063 { "seltime", &aic79xx_seltime },
1064 { "tag_info", NULL },
1065 { "global_tag_depth", NULL},
1066 { "slewrate", NULL },
1067 { "precomp", NULL },
1068 { "amplitude", NULL },
3fb08612 1069 { "slowcrc", &aic79xx_slowcrc },
73a25462 1070 };
1da177e4 1071
73a25462 1072 end = strchr(s, '\0');
1da177e4 1073
73a25462 1074 /*
6391a113 1075 * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE
73a25462 1076 * will never be 0 in this case.
6391a113
TK		 1077 */
1078 n = 0;
73a25462
HR		 1079
1080 while ((p = strsep(&s, ",.")) != NULL) {
1081 if (*p == '\0')
1082 continue;
6391a113 1083 for (i = 0; i < ARRAY_SIZE(options); i++) {
73a25462
HR		 1084
1085 n = strlen(options[i].name);
1086 if (strncmp(options[i].name, p, n) == 0)
1087 break;
1088 }
6391a113 1089 if (i == ARRAY_SIZE(options))
73a25462
HR		 1090 continue;
1091
1092 if (strncmp(p, "global_tag_depth", n) == 0) {
1093 ahd_linux_setup_tag_info_global(p + n);
1094 } else if (strncmp(p, "tag_info", n) == 0) {
1ff92730 1095 s = ahd_parse_brace_option("tag_info", p + n, end,
73a25462
HR		 1096 2, ahd_linux_setup_tag_info, 0);
1097 } else if (strncmp(p, "slewrate", n) == 0) {
1ff92730 1098 s = ahd_parse_brace_option("slewrate",
73a25462
HR		 1099 p + n, end, 1, ahd_linux_setup_iocell_info,
1100 AIC79XX_SLEWRATE_INDEX);
1101 } else if (strncmp(p, "precomp", n) == 0) {
1ff92730 1102 s = ahd_parse_brace_option("precomp",
73a25462
HR		 1103 p + n, end, 1, ahd_linux_setup_iocell_info,
1104 AIC79XX_PRECOMP_INDEX);
1105 } else if (strncmp(p, "amplitude", n) == 0) {
1ff92730 1106 s = ahd_parse_brace_option("amplitude",
73a25462
HR		 1107 p + n, end, 1, ahd_linux_setup_iocell_info,
1108 AIC79XX_AMPLITUDE_INDEX);
1109 } else if (p[n] == ':') {
1110 *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
1111 } else if (!strncmp(p, "verbose", n)) {
1112 *(options[i].flag) = 1;
1113 } else {
1114 *(options[i].flag) ^= 0xFFFFFFFF;
1115 }
1116 }
1117 return 1;
1da177e4
LT		 1118}
1119
73a25462
HR		 1120__setup("aic79xx=", aic79xx_setup);
1121
1122uint32_t aic79xx_verbose;
1da177e4 1123
1da177e4 1124int
73a25462 1125ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template)
1da177e4 1126{
73a25462
HR		 1127 char buf[80];
1128 struct Scsi_Host *host;
1129 char *new_name;
1130 u_long s;
e7a1ca1d 1131 int retval;
1da177e4 1132
73a25462
HR		 1133 template->name = ahd->description;
1134 host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
1135 if (host == NULL)
1da177e4
LT		 1136 return (ENOMEM);
1137
73a25462 1138 *((struct ahd_softc **)host->hostdata) = ahd;
73a25462
HR		 1139 ahd->platform_data->host = host;
1140 host->can_queue = AHD_MAX_QUEUE;
1141 host->cmd_per_lun = 2;
1142 host->sg_tablesize = AHD_NSEG;
1143 host->this_id = ahd->our_id;
1144 host->irq = ahd->platform_data->irq;
1145 host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8;
1146 host->max_lun = AHD_NUM_LUNS;
1147 host->max_channel = 0;
1148 host->sg_tablesize = AHD_NSEG;
eb221849 1149 ahd_lock(ahd, &s);
85a46523 1150 ahd_set_unit(ahd, ahd_linux_unit++);
eb221849 1151 ahd_unlock(ahd, &s);
73a25462
HR		 1152 sprintf(buf, "scsi%d", host->host_no);
1153 new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
1154 if (new_name != NULL) {
1155 strcpy(new_name, buf);
1156 ahd_set_name(ahd, new_name);
1157 }
1158 host->unique_id = ahd->unit;
1159 ahd_linux_initialize_scsi_bus(ahd);
1160 ahd_intr_enable(ahd, TRUE);
73a25462
HR		 1161
1162 host->transportt = ahd_linux_transport_template;
1163
e7a1ca1d
JJ		 1164 retval = scsi_add_host(host, &ahd->dev_softc->dev);
1165 if (retval) {
1166 printk(KERN_WARNING "aic79xx: scsi_add_host failed\n");
1167 scsi_host_put(host);
1168 return retval;
1169 }
1170
73a25462 1171 scsi_scan_host(host);
e7a1ca1d 1172 return 0;
1da177e4
LT		 1173}
1174
73a25462
HR		 1175uint64_t
1176ahd_linux_get_memsize(void)
1da177e4 1177{
73a25462
HR		 1178 struct sysinfo si;
1179
1180 si_meminfo(&si);
1181 return ((uint64_t)si.totalram << PAGE_SHIFT);
1da177e4
LT		 1182}
1183
73a25462
HR		 1184/*
1185 * Place the SCSI bus into a known state by either resetting it,
1186 * or forcing transfer negotiations on the next command to any
1187 * target.
1188 */
1189static void
1190ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
1da177e4 1191{
73a25462
HR		 1192 u_int target_id;
1193 u_int numtarg;
eb221849 1194 unsigned long s;
1da177e4 1195
73a25462
HR		 1196 target_id = 0;
1197 numtarg = 0;
1198
1199 if (aic79xx_no_reset != 0)
1200 ahd->flags &= ~AHD_RESET_BUS_A;
1201
1202 if ((ahd->flags & AHD_RESET_BUS_A) != 0)
1203 ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE);
1204 else
1205 numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
1da177e4 1206
eb221849
HR		 1207 ahd_lock(ahd, &s);
1208
1da177e4 1209 /*
73a25462
HR		 1210 * Force negotiation to async for all targets that
1211 * will not see an initial bus reset.
1da177e4 1212 */
73a25462
HR		 1213 for (; target_id < numtarg; target_id++) {
1214 struct ahd_devinfo devinfo;
1215 struct ahd_initiator_tinfo *tinfo;
1216 struct ahd_tmode_tstate *tstate;
1217
1218 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1219 target_id, &tstate);
1220 ahd_compile_devinfo(&devinfo, ahd->our_id, target_id,
1221 CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR);
1222 ahd_update_neg_request(ahd, &devinfo, tstate,
1223 tinfo, AHD_NEG_ALWAYS);
1224 }
eb221849 1225 ahd_unlock(ahd, &s);
73a25462
HR		 1226 /* Give the bus some time to recover */
1227 if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
1228 ahd_freeze_simq(ahd);
eb221849
HR		 1229 msleep(AIC79XX_RESET_DELAY);
1230 ahd_release_simq(ahd);
73a25462 1231 }
1da177e4
LT		 1232}
1233
1234int
73a25462 1235ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1da177e4 1236{
73a25462
HR		 1237 ahd->platform_data =
1238 malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT);
1239 if (ahd->platform_data == NULL)
1240 return (ENOMEM);
1241 memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data));
1242 ahd->platform_data->irq = AHD_LINUX_NOIRQ;
1243 ahd_lockinit(ahd);
73a25462 1244 ahd->seltime = (aic79xx_seltime & 0x3) << 4;
1da177e4
LT		 1245 return (0);
1246}
1247
73a25462
HR		 1248void
1249ahd_platform_free(struct ahd_softc *ahd)
1da177e4 1250{
73a25462
HR		 1251 struct scsi_target *starget;
1252 int i, j;
1da177e4 1253
73a25462 1254 if (ahd->platform_data != NULL) {
73a25462
HR		 1255 /* destroy all of the device and target objects */
1256 for (i = 0; i < AHD_NUM_TARGETS; i++) {
1257 starget = ahd->platform_data->starget[i];
1258 if (starget != NULL) {
1259 for (j = 0; j < AHD_NUM_LUNS; j++) {
1260 struct ahd_linux_target *targ =
1261 scsi_transport_target_data(starget);
1262 if (targ->sdev[j] == NULL)
1263 continue;
1264 targ->sdev[j] = NULL;
1265 }
1266 ahd->platform_data->starget[i] = NULL;
1267 }
1268 }
1da177e4 1269
73a25462
HR		 1270 if (ahd->platform_data->irq != AHD_LINUX_NOIRQ)
1271 free_irq(ahd->platform_data->irq, ahd);
1272 if (ahd->tags[0] == BUS_SPACE_PIO
1273 && ahd->bshs[0].ioport != 0)
1274 release_region(ahd->bshs[0].ioport, 256);
1275 if (ahd->tags[1] == BUS_SPACE_PIO
1276 && ahd->bshs[1].ioport != 0)
1277 release_region(ahd->bshs[1].ioport, 256);
1278 if (ahd->tags[0] == BUS_SPACE_MEMIO
1279 && ahd->bshs[0].maddr != NULL) {
1280 iounmap(ahd->bshs[0].maddr);
1281 release_mem_region(ahd->platform_data->mem_busaddr,
1282 0x1000);
1283 }
97af50f6
JB		 1284 if (ahd->platform_data->host)
1285 scsi_host_put(ahd->platform_data->host);
1286
73a25462
HR		 1287 free(ahd->platform_data, M_DEVBUF);
1288 }
1da177e4
LT		 1289}
1290
73a25462
HR		 1291void
1292ahd_platform_init(struct ahd_softc *ahd)
1da177e4 1293{
73a25462
HR		 1294 /*
1295 * Lookup and commit any modified IO Cell options.
1296 */
6391a113 1297 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
73a25462 1298 struct ahd_linux_iocell_opts *iocell_opts;
1da177e4 1299
73a25462
HR		 1300 iocell_opts = &aic79xx_iocell_info[ahd->unit];
1301 if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP)
1302 AHD_SET_PRECOMP(ahd, iocell_opts->precomp);
1303 if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE)
1304 AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate);
1305 if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE)
1306 AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude);
1da177e4 1307 }
1da177e4 1308
1da177e4
LT		 1309}
1310
73a25462
HR		 1311void
1312ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
1da177e4 1313{
73a25462
HR		 1314 ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
1315 SCB_GET_CHANNEL(ahd, scb),
1316 SCB_GET_LUN(scb), SCB_LIST_NULL,
1317 ROLE_UNKNOWN, CAM_REQUEUE_REQ);
1da177e4
LT		 1318}
1319
73a25462
HR		 1320void
1321ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
1322 ahd_queue_alg alg)
1da177e4 1323{
73a25462
HR		 1324 struct scsi_target *starget;
1325 struct ahd_linux_target *targ;
1326 struct ahd_linux_device *dev;
1327 struct scsi_device *sdev;
1328 int was_queuing;
1329 int now_queuing;
1da177e4 1330
73a25462
HR		 1331 starget = ahd->platform_data->starget[devinfo->target];
1332 targ = scsi_transport_target_data(starget);
1333 BUG_ON(targ == NULL);
1334 sdev = targ->sdev[devinfo->lun];
1335 if (sdev == NULL)
1336 return;
1da177e4 1337
73a25462 1338 dev = scsi_transport_device_data(sdev);
1da177e4 1339
73a25462
HR		 1340 if (dev == NULL)
1341 return;
1342 was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED);
1343 switch (alg) {
1344 default:
1345 case AHD_QUEUE_NONE:
1346 now_queuing = 0;
1347 break;
1348 case AHD_QUEUE_BASIC:
1349 now_queuing = AHD_DEV_Q_BASIC;
1350 break;
1351 case AHD_QUEUE_TAGGED:
1352 now_queuing = AHD_DEV_Q_TAGGED;
1353 break;
1354 }
1355 if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0
1356 && (was_queuing != now_queuing)
1357 && (dev->active != 0)) {
1358 dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY;
1359 dev->qfrozen++;
1da177e4 1360 }
1da177e4 1361
73a25462
HR		 1362 dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG);
1363 if (now_queuing) {
1364 u_int usertags;
1da177e4 1365
73a25462
HR		 1366 usertags = ahd_linux_user_tagdepth(ahd, devinfo);
1367 if (!was_queuing) {
1368 /*
1369 * Start out agressively and allow our
1370 * dynamic queue depth algorithm to take
1371 * care of the rest.
1372 */
1373 dev->maxtags = usertags;
1374 dev->openings = dev->maxtags - dev->active;
1da177e4 1375 }
73a25462
HR		 1376 if (dev->maxtags == 0) {
1377 /*
1378 * Queueing is disabled by the user.
1379 */
1380 dev->openings = 1;
1381 } else if (alg == AHD_QUEUE_TAGGED) {
1382 dev->flags |= AHD_DEV_Q_TAGGED;
1383 if (aic79xx_periodic_otag != 0)
1384 dev->flags |= AHD_DEV_PERIODIC_OTAG;
1385 } else
1386 dev->flags |= AHD_DEV_Q_BASIC;
1387 } else {
1388 /* We can only have one opening. */
1389 dev->maxtags = 0;
1390 dev->openings = 1 - dev->active;
1da177e4 1391 }
1da177e4 1392
73a25462
HR		 1393 switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
1394 case AHD_DEV_Q_BASIC:
0aa800db
HR		 1395 scsi_set_tag_type(sdev, MSG_SIMPLE_TASK);
1396 scsi_activate_tcq(sdev, dev->openings + dev->active);
73a25462
HR		 1397 break;
1398 case AHD_DEV_Q_TAGGED:
0aa800db
HR		 1399 scsi_set_tag_type(sdev, MSG_ORDERED_TASK);
1400 scsi_activate_tcq(sdev, dev->openings + dev->active);
73a25462
HR		 1401 break;
1402 default:
1da177e4 1403 /*
73a25462
HR		 1404 * We allow the OS to queue 2 untagged transactions to
1405 * us at any time even though we can only execute them
1406 * serially on the controller/device. This should
1407 * remove some latency.
1da177e4 1408 */
0aa800db 1409 scsi_deactivate_tcq(sdev, 1);
73a25462 1410 break;
1da177e4 1411 }
1da177e4
LT		 1412}
1413
73a25462
HR		 1414int
1415ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel,
1416 int lun, u_int tag, role_t role, uint32_t status)
1da177e4 1417{
73a25462 1418 return 0;
1da177e4
LT		 1419}
1420
73a25462
HR		 1421static u_int
1422ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
1da177e4 1423{
73a25462
HR		 1424 static int warned_user;
1425 u_int tags;
1da177e4 1426
73a25462
HR		 1427 tags = 0;
1428 if ((ahd->user_discenable & devinfo->target_mask) != 0) {
6391a113 1429 if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) {
73a25462
HR		 1430
1431 if (warned_user == 0) {
1432 printf(KERN_WARNING
1433"aic79xx: WARNING: Insufficient tag_info instances\n"
1434"aic79xx: for installed controllers. Using defaults\n"
1435"aic79xx: Please update the aic79xx_tag_info array in\n"
1436"aic79xx: the aic79xx_osm.c source file.\n");
1437 warned_user++;
1438 }
1439 tags = AHD_MAX_QUEUE;
1440 } else {
1441 adapter_tag_info_t *tag_info;
1442
1443 tag_info = &aic79xx_tag_info[ahd->unit];
1444 tags = tag_info->tag_commands[devinfo->target_offset];
1445 if (tags > AHD_MAX_QUEUE)
1446 tags = AHD_MAX_QUEUE;
1da177e4
LT		 1447 }
1448 }
73a25462 1449 return (tags);
1da177e4
LT		 1450}
1451
1452/*
73a25462 1453 * Determines the queue depth for a given device.
1da177e4
LT		 1454 */
1455static void
73a25462 1456ahd_linux_device_queue_depth(struct scsi_device *sdev)
1da177e4 1457{
73a25462
HR		 1458 struct ahd_devinfo devinfo;
1459 u_int tags;
1460 struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata);
1da177e4 1461
73a25462
HR		 1462 ahd_compile_devinfo(&devinfo,
1463 ahd->our_id,
1464 sdev->sdev_target->id, sdev->lun,
1465 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1466 ROLE_INITIATOR);
1467 tags = ahd_linux_user_tagdepth(ahd, &devinfo);
1468 if (tags != 0 && sdev->tagged_supported != 0) {
1da177e4 1469
73a25462
HR		 1470 ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED);
1471 ahd_print_devinfo(ahd, &devinfo);
1472 printf("Tagged Queuing enabled. Depth %d\n", tags);
1473 } else {
1474 ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE);
1475 }
1476}
1da177e4 1477
73a25462
HR		 1478static int
1479ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
1480 struct scsi_cmnd *cmd)
1481{
1482 struct scb *scb;
1483 struct hardware_scb *hscb;
1484 struct ahd_initiator_tinfo *tinfo;
1485 struct ahd_tmode_tstate *tstate;
1486 u_int col_idx;
1487 uint16_t mask;
7b22da38
HR		 1488 unsigned long flags;
1489
1490 ahd_lock(ahd, &flags);
1da177e4
LT		 1491
1492 /*
73a25462 1493 * Get an scb to use.
1da177e4 1494 */
73a25462
HR		 1495 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1496 cmd->device->id, &tstate);
1497 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
1498 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1499 col_idx = AHD_NEVER_COL_IDX;
1500 } else {
1501 col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
1502 cmd->device->lun);
1503 }
1504 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
1505 ahd->flags |= AHD_RESOURCE_SHORTAGE;
7b22da38 1506 ahd_unlock(ahd, &flags);
73a25462 1507 return SCSI_MLQUEUE_HOST_BUSY;
1da177e4 1508 }
1da177e4 1509
73a25462
HR		 1510 scb->io_ctx = cmd;
1511 scb->platform_data->dev = dev;
1512 hscb = scb->hscb;
1513 cmd->host_scribble = (char *)scb;
1da177e4 1514
73a25462
HR		 1515 /*
1516 * Fill out basics of the HSCB.
1517 */
1518 hscb->control = 0;
1519 hscb->scsiid = BUILD_SCSIID(ahd, cmd);
1520 hscb->lun = cmd->device->lun;
1521 scb->hscb->task_management = 0;
1522 mask = SCB_GET_TARGET_MASK(ahd, scb);
1da177e4 1523
73a25462
HR		 1524 if ((ahd->user_discenable & mask) != 0)
1525 hscb->control |= DISCENB;
1da177e4 1526
73a25462
HR		 1527 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
1528 scb->flags |= SCB_PACKETIZED;
1da177e4 1529
73a25462
HR		 1530 if ((tstate->auto_negotiate & mask) != 0) {
1531 scb->flags |= SCB_AUTO_NEGOTIATE;
1532 scb->hscb->control |= MK_MESSAGE;
1533 }
1534
1535 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
1536 int msg_bytes;
1537 uint8_t tag_msgs[2];
1538
1539 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
1540 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
1541 hscb->control |= tag_msgs[0];
1542 if (tag_msgs[0] == MSG_ORDERED_TASK)
1543 dev->commands_since_idle_or_otag = 0;
1544 } else
1545 if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
1546 && (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
1547 hscb->control |= MSG_ORDERED_TASK;
1548 dev->commands_since_idle_or_otag = 0;
1549 } else {
1550 hscb->control |= MSG_SIMPLE_TASK;
1da177e4 1551 }
73a25462 1552 }
1da177e4 1553
73a25462
HR		 1554 hscb->cdb_len = cmd->cmd_len;
1555 memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
1556
1557 scb->platform_data->xfer_len = 0;
1558 ahd_set_residual(scb, 0);
1559 ahd_set_sense_residual(scb, 0);
1560 scb->sg_count = 0;
1561 if (cmd->use_sg != 0) {
1562 void *sg;
1563 struct scatterlist *cur_seg;
1564 u_int nseg;
1565 int dir;
1566
1567 cur_seg = (struct scatterlist *)cmd->request_buffer;
1568 dir = cmd->sc_data_direction;
1569 nseg = pci_map_sg(ahd->dev_softc, cur_seg,
1570 cmd->use_sg, dir);
1571 scb->platform_data->xfer_len = 0;
1572 for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) {
1573 dma_addr_t addr;
1574 bus_size_t len;
1575
1576 addr = sg_dma_address(cur_seg);
1577 len = sg_dma_len(cur_seg);
1578 scb->platform_data->xfer_len += len;
1579 sg = ahd_sg_setup(ahd, scb, sg, addr, len,
1580 /*last*/nseg == 1);
1da177e4 1581 }
73a25462
HR		 1582 } else if (cmd->request_bufflen != 0) {
1583 void *sg;
1584 dma_addr_t addr;
1585 int dir;
1586
1587 sg = scb->sg_list;
1588 dir = cmd->sc_data_direction;
1589 addr = pci_map_single(ahd->dev_softc,
1590 cmd->request_buffer,
1591 cmd->request_bufflen, dir);
1592 scb->platform_data->xfer_len = cmd->request_bufflen;
1593 scb->platform_data->buf_busaddr = addr;
1594 sg = ahd_sg_setup(ahd, scb, sg, addr,
1595 cmd->request_bufflen, /*last*/TRUE);
1da177e4 1596 }
73a25462
HR		 1597
1598 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1599 dev->openings--;
1600 dev->active++;
1601 dev->commands_issued++;
1602
1603 if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
1604 dev->commands_since_idle_or_otag++;
1605 scb->flags |= SCB_ACTIVE;
1606 ahd_queue_scb(ahd, scb);
1607
7b22da38
HR		 1608 ahd_unlock(ahd, &flags);
1609
73a25462 1610 return 0;
1da177e4
LT		 1611}
1612
73a25462
HR		 1613/*
1614 * SCSI controller interrupt handler.
1615 */
1616irqreturn_t
1617ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
1da177e4 1618{
73a25462
HR		 1619 struct ahd_softc *ahd;
1620 u_long flags;
1621 int ours;
1da177e4 1622
73a25462
HR		 1623 ahd = (struct ahd_softc *) dev_id;
1624 ahd_lock(ahd, &flags);
1625 ours = ahd_intr(ahd);
1626 ahd_unlock(ahd, &flags);
1627 return IRQ_RETVAL(ours);
1da177e4
LT		 1628}
1629
1da177e4 1630void
73a25462
HR		 1631ahd_send_async(struct ahd_softc *ahd, char channel,
1632 u_int target, u_int lun, ac_code code, void *arg)
1da177e4 1633{
73a25462
HR		 1634 switch (code) {
1635 case AC_TRANSFER_NEG:
1636 {
1637 char buf[80];
1638 struct scsi_target *starget;
73a25462
HR		 1639 struct info_str info;
1640 struct ahd_initiator_tinfo *tinfo;
1641 struct ahd_tmode_tstate *tstate;
1642 unsigned int target_ppr_options;
1da177e4 1643
73a25462
HR		 1644 BUG_ON(target == CAM_TARGET_WILDCARD);
1645
1646 info.buffer = buf;
1647 info.length = sizeof(buf);
1648 info.offset = 0;
1649 info.pos = 0;
1650 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
1651 target, &tstate);
1652
1653 /*
1654 * Don't bother reporting results while
1655 * negotiations are still pending.
1656 */
1657 if (tinfo->curr.period != tinfo->goal.period
1658 || tinfo->curr.width != tinfo->goal.width
1659 || tinfo->curr.offset != tinfo->goal.offset
1660 || tinfo->curr.ppr_options != tinfo->goal.ppr_options)
1661 if (bootverbose == 0)
1662 break;
1663
1664 /*
1665 * Don't bother reporting results that
1666 * are identical to those last reported.
1667 */
1668 starget = ahd->platform_data->starget[target];
fc789a93 1669 if (starget == NULL)
73a25462
HR		 1670 break;
1671
1672 target_ppr_options =
1673 (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0)
1674 + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0)
3f40d7d6
JB		 1675 + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0)
1676 + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0)
1677 + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0)
1678 + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0)
88ff29a4
JB		 1679 + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0)
1680 + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0);
73a25462
HR		 1681
1682 if (tinfo->curr.period == spi_period(starget)
1683 && tinfo->curr.width == spi_width(starget)
1684 && tinfo->curr.offset == spi_offset(starget)
1685 && tinfo->curr.ppr_options == target_ppr_options)
1686 if (bootverbose == 0)
1687 break;
1688
1689 spi_period(starget) = tinfo->curr.period;
1690 spi_width(starget) = tinfo->curr.width;
1691 spi_offset(starget) = tinfo->curr.offset;
a4b53a11
HR		 1692 spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
1693 spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
1694 spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
3f40d7d6
JB		 1695 spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0;
1696 spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0;
1697 spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0;
1698 spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0;
88ff29a4 1699 spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0;
73a25462 1700 spi_display_xfer_agreement(starget);
1da177e4 1701 break;
73a25462
HR		 1702 }
1703 case AC_SENT_BDR:
1704 {
1705 WARN_ON(lun != CAM_LUN_WILDCARD);
1706 scsi_report_device_reset(ahd->platform_data->host,
1707 channel - 'A', target);
1da177e4
LT		 1708 break;
1709 }
73a25462
HR		 1710 case AC_BUS_RESET:
1711 if (ahd->platform_data->host != NULL) {
1712 scsi_report_bus_reset(ahd->platform_data->host,
1713 channel - 'A');
1da177e4 1714 }
73a25462
HR		 1715 break;
1716 default:
1717 panic("ahd_send_async: Unexpected async event");
1718 }
1da177e4
LT		 1719}
1720
73a25462
HR		 1721/*
1722 * Calls the higher level scsi done function and frees the scb.
1723 */
1724void
1725ahd_done(struct ahd_softc *ahd, struct scb *scb)
1da177e4 1726{
73a25462
HR		 1727 struct scsi_cmnd *cmd;
1728 struct ahd_linux_device *dev;
1da177e4 1729
73a25462
HR		 1730 if ((scb->flags & SCB_ACTIVE) == 0) {
1731 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb));
1732 ahd_dump_card_state(ahd);
1733 panic("Stopping for safety");
1da177e4 1734 }
73a25462
HR		 1735 LIST_REMOVE(scb, pending_links);
1736 cmd = scb->io_ctx;
1737 dev = scb->platform_data->dev;
1738 dev->active--;
1739 dev->openings++;
1740 if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) {
1741 cmd->result &= ~(CAM_DEV_QFRZN << 16);
1742 dev->qfrozen--;
1743 }
1744 ahd_linux_unmap_scb(ahd, scb);
1da177e4
LT		 1745
1746 /*
73a25462
HR		 1747 * Guard against stale sense data.
1748 * The Linux mid-layer assumes that sense
1749 * was retrieved anytime the first byte of
1750 * the sense buffer looks "sane".
1da177e4 1751 */
73a25462
HR		 1752 cmd->sense_buffer[0] = 0;
1753 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
1754 uint32_t amount_xferred;
1da177e4 1755
73a25462
HR		 1756 amount_xferred =
1757 ahd_get_transfer_length(scb) - ahd_get_residual(scb);
1758 if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
1da177e4 1759#ifdef AHD_DEBUG
73a25462
HR		 1760 if ((ahd_debug & AHD_SHOW_MISC) != 0) {
1761 ahd_print_path(ahd, scb);
1762 printf("Set CAM_UNCOR_PARITY\n");
1763 }
1da177e4 1764#endif
73a25462
HR		 1765 ahd_set_transaction_status(scb, CAM_UNCOR_PARITY);
1766#ifdef AHD_REPORT_UNDERFLOWS
1da177e4 1767 /*
73a25462
HR		 1768 * This code is disabled by default as some
1769 * clients of the SCSI system do not properly
1770 * initialize the underflow parameter. This
1771 * results in spurious termination of commands
1772 * that complete as expected (e.g. underflow is
1773 * allowed as command can return variable amounts
1774 * of data.
1da177e4 1775 */
73a25462
HR		 1776 } else if (amount_xferred < scb->io_ctx->underflow) {
1777 u_int i;
1da177e4 1778
73a25462
HR		 1779 ahd_print_path(ahd, scb);
1780 printf("CDB:");
1781 for (i = 0; i < scb->io_ctx->cmd_len; i++)
1782 printf(" 0x%x", scb->io_ctx->cmnd[i]);
1783 printf("\n");
1784 ahd_print_path(ahd, scb);
1785 printf("Saw underflow (%ld of %ld bytes). "
1786 "Treated as error\n",
1787 ahd_get_residual(scb),
1788 ahd_get_transfer_length(scb));
1789 ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
1790#endif
1791 } else {
1792 ahd_set_transaction_status(scb, CAM_REQ_CMP);
1da177e4 1793 }
73a25462
HR		 1794 } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
1795 ahd_linux_handle_scsi_status(ahd, cmd->device, scb);
1796 }
1da177e4 1797
73a25462
HR		 1798 if (dev->openings == 1
1799 && ahd_get_transaction_status(scb) == CAM_REQ_CMP
1800 && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL)
1801 dev->tag_success_count++;
1802 /*
1803 * Some devices deal with temporary internal resource
1804 * shortages by returning queue full. When the queue
1805 * full occurrs, we throttle back. Slowly try to get
1806 * back to our previous queue depth.
1807 */
1808 if ((dev->openings + dev->active) < dev->maxtags
1809 && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) {
1810 dev->tag_success_count = 0;
1811 dev->openings++;
1812 }
1da177e4 1813
73a25462
HR		 1814 if (dev->active == 0)
1815 dev->commands_since_idle_or_otag = 0;
1da177e4 1816
73a25462
HR		 1817 if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
1818 printf("Recovery SCB completes\n");
1819 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
1820 || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
1821 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
7b22da38
HR		 1822
1823 if (ahd->platform_data->eh_done)
1824 complete(ahd->platform_data->eh_done);
1da177e4 1825 }
73a25462
HR		 1826
1827 ahd_free_scb(ahd, scb);
1828 ahd_linux_queue_cmd_complete(ahd, cmd);
1da177e4
LT		 1829}
1830
1831static void
73a25462
HR		 1832ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
1833 struct scsi_device *sdev, struct scb *scb)
1da177e4 1834{
73a25462
HR		 1835 struct ahd_devinfo devinfo;
1836 struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
1da177e4 1837
73a25462
HR		 1838 ahd_compile_devinfo(&devinfo,
1839 ahd->our_id,
1840 sdev->sdev_target->id, sdev->lun,
1841 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1842 ROLE_INITIATOR);
1843
1844 /*
1845 * We don't currently trust the mid-layer to
1846 * properly deal with queue full or busy. So,
1847 * when one occurs, we tell the mid-layer to
1848 * unconditionally requeue the command to us
1849 * so that we can retry it ourselves. We also
1850 * implement our own throttling mechanism so
1851 * we don't clobber the device with too many
1852 * commands.
1853 */
1854 switch (ahd_get_scsi_status(scb)) {
1855 default:
1856 break;
1857 case SCSI_STATUS_CHECK_COND:
1858 case SCSI_STATUS_CMD_TERMINATED:
1859 {
1860 struct scsi_cmnd *cmd;
1da177e4
LT		 1861
1862 /*
73a25462
HR		 1863 * Copy sense information to the OS's cmd
1864 * structure if it is available.
1da177e4 1865 */
73a25462
HR		 1866 cmd = scb->io_ctx;
1867 if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) {
1868 struct scsi_status_iu_header *siu;
1869 u_int sense_size;
1870 u_int sense_offset;
1da177e4 1871
73a25462
HR		 1872 if (scb->flags & SCB_SENSE) {
1873 sense_size = MIN(sizeof(struct scsi_sense_data)
1874 - ahd_get_sense_residual(scb),
1875 sizeof(cmd->sense_buffer));
1876 sense_offset = 0;
1877 } else {
1878 /*
1879 * Copy only the sense data into the provided
1880 * buffer.
1881 */
1882 siu = (struct scsi_status_iu_header *)
1883 scb->sense_data;
1884 sense_size = MIN(scsi_4btoul(siu->sense_length),
1885 sizeof(cmd->sense_buffer));
1886 sense_offset = SIU_SENSE_OFFSET(siu);
1887 }
1da177e4 1888
73a25462
HR		 1889 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
1890 memcpy(cmd->sense_buffer,
1891 ahd_get_sense_buf(ahd, scb)
1892 + sense_offset, sense_size);
1893 cmd->result |= (DRIVER_SENSE << 24);
1da177e4 1894
1da177e4 1895#ifdef AHD_DEBUG
73a25462
HR		 1896 if (ahd_debug & AHD_SHOW_SENSE) {
1897 int i;
1da177e4 1898
73a25462
HR		 1899 printf("Copied %d bytes of sense data at %d:",
1900 sense_size, sense_offset);
1901 for (i = 0; i < sense_size; i++) {
1da177e4 1902 if ((i & 0xF) == 0)
73a25462
HR		 1903 printf("\n");
1904 printf("0x%x ", cmd->sense_buffer[i]);
1da177e4
LT		 1905 }
1906 printf("\n");
1907 }
1908#endif
1da177e4
LT		 1909 }
1910 break;
73a25462
HR		 1911 }
1912 case SCSI_STATUS_QUEUE_FULL:
1913 /*
1914 * By the time the core driver has returned this
1915 * command, all other commands that were queued
1916 * to us but not the device have been returned.
1917 * This ensures that dev->active is equal to
1918 * the number of commands actually queued to
1919 * the device.
1920 */
1921 dev->tag_success_count = 0;
1922 if (dev->active != 0) {
1da177e4 1923 /*
73a25462
HR		 1924 * Drop our opening count to the number
1925 * of commands currently outstanding.
1da177e4 1926 */
73a25462 1927 dev->openings = 0;
1da177e4 1928#ifdef AHD_DEBUG
73a25462
HR		 1929 if ((ahd_debug & AHD_SHOW_QFULL) != 0) {
1930 ahd_print_path(ahd, scb);
1931 printf("Dropping tag count to %d\n",
1932 dev->active);
1da177e4
LT		 1933 }
1934#endif
73a25462 1935 if (dev->active == dev->tags_on_last_queuefull) {
1da177e4 1936
73a25462 1937 dev->last_queuefull_same_count++;
1da177e4 1938 /*
73a25462
HR		 1939 * If we repeatedly see a queue full
1940 * at the same queue depth, this
1941 * device has a fixed number of tag
1942 * slots. Lock in this tag depth
1943 * so we stop seeing queue fulls from
1944 * this device.
1da177e4 1945 */
73a25462
HR		 1946 if (dev->last_queuefull_same_count
1947 == AHD_LOCK_TAGS_COUNT) {
1948 dev->maxtags = dev->active;
1949 ahd_print_path(ahd, scb);
1950 printf("Locking max tag count at %d\n",
1951 dev->active);
1da177e4 1952 }
73a25462
HR		 1953 } else {
1954 dev->tags_on_last_queuefull = dev->active;
1955 dev->last_queuefull_same_count = 0;
1da177e4 1956 }
73a25462
HR		 1957 ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
1958 ahd_set_scsi_status(scb, SCSI_STATUS_OK);
1959 ahd_platform_set_tags(ahd, &devinfo,
1960 (dev->flags & AHD_DEV_Q_BASIC)
1961 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
1da177e4
LT		 1962 break;
1963 }
1da177e4 1964 /*
73a25462
HR		 1965 * Drop down to a single opening, and treat this
1966 * as if the target returned BUSY SCSI status.
1da177e4 1967 */
73a25462
HR		 1968 dev->openings = 1;
1969 ahd_platform_set_tags(ahd, &devinfo,
1970 (dev->flags & AHD_DEV_Q_BASIC)
1971 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
1972 ahd_set_scsi_status(scb, SCSI_STATUS_BUSY);
1973 }
1da177e4
LT		 1974}
1975
73a25462
HR		 1976static void
1977ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
1da177e4 1978{
6902f416
HR		 1979 int status;
1980 int new_status = DID_OK;
1981 int do_fallback = 0;
1982 int scsi_status;
1983
1da177e4 1984 /*
73a25462
HR		 1985 * Map CAM error codes into Linux Error codes. We
1986 * avoid the conversion so that the DV code has the
1987 * full error information available when making
1988 * state change decisions.
1da177e4 1989 */
6902f416
HR		 1990
1991 status = ahd_cmd_get_transaction_status(cmd);
1992 switch (status) {
1993 case CAM_REQ_INPROG:
1994 case CAM_REQ_CMP:
1995 new_status = DID_OK;
1996 break;
1997 case CAM_AUTOSENSE_FAIL:
1998 new_status = DID_ERROR;
1999 /* Fallthrough */
2000 case CAM_SCSI_STATUS_ERROR:
2001 scsi_status = ahd_cmd_get_scsi_status(cmd);
2002
2003 switch(scsi_status) {
2004 case SCSI_STATUS_CMD_TERMINATED:
2005 case SCSI_STATUS_CHECK_COND:
2006 if ((cmd->result >> 24) != DRIVER_SENSE) {
2007 do_fallback = 1;
2008 } else {
2009 struct scsi_sense_data *sense;
2010
2011 sense = (struct scsi_sense_data *)
2012 &cmd->sense_buffer;
2013 if (sense->extra_len >= 5 &&
2014 (sense->add_sense_code == 0x47
2015 || sense->add_sense_code == 0x48))
2016 do_fallback = 1;
2017 }
73a25462
HR		 2018 break;
2019 default:
73a25462
HR		 2020 break;
2021 }
6902f416
HR		 2022 break;
2023 case CAM_REQ_ABORTED:
2024 new_status = DID_ABORT;
2025 break;
2026 case CAM_BUSY:
2027 new_status = DID_BUS_BUSY;
2028 break;
2029 case CAM_REQ_INVALID:
2030 case CAM_PATH_INVALID:
2031 new_status = DID_BAD_TARGET;
2032 break;
2033 case CAM_SEL_TIMEOUT:
2034 new_status = DID_NO_CONNECT;
2035 break;
2036 case CAM_SCSI_BUS_RESET:
2037 case CAM_BDR_SENT:
2038 new_status = DID_RESET;
2039 break;
2040 case CAM_UNCOR_PARITY:
2041 new_status = DID_PARITY;
2042 do_fallback = 1;
2043 break;
2044 case CAM_CMD_TIMEOUT:
2045 new_status = DID_TIME_OUT;
2046 do_fallback = 1;
2047 break;
2048 case CAM_REQ_CMP_ERR:
2049 case CAM_UNEXP_BUSFREE:
2050 case CAM_DATA_RUN_ERR:
2051 new_status = DID_ERROR;
2052 do_fallback = 1;
2053 break;
2054 case CAM_UA_ABORT:
2055 case CAM_NO_HBA:
2056 case CAM_SEQUENCE_FAIL:
2057 case CAM_CCB_LEN_ERR:
2058 case CAM_PROVIDE_FAIL:
2059 case CAM_REQ_TERMIO:
2060 case CAM_UNREC_HBA_ERROR:
2061 case CAM_REQ_TOO_BIG:
2062 new_status = DID_ERROR;
2063 break;
2064 case CAM_REQUEUE_REQ:
2065 new_status = DID_REQUEUE;
2066 break;
2067 default:
2068 /* We should never get here */
2069 new_status = DID_ERROR;
2070 break;
2071 }
73a25462 2072
6902f416
HR		 2073 if (do_fallback) {
2074 printf("%s: device overrun (status %x) on %d:%d:%d\n",
2075 ahd_name(ahd), status, cmd->device->channel,
2076 cmd->device->id, cmd->device->lun);
73a25462
HR		 2077 }
2078
6902f416
HR		 2079 ahd_cmd_set_transaction_status(cmd, new_status);
2080
73a25462 2081 cmd->scsi_done(cmd);
1da177e4
LT		 2082}
2083
1da177e4 2084void
73a25462 2085ahd_freeze_simq(struct ahd_softc *ahd)
1da177e4 2086{
7b22da38 2087 scsi_block_requests(ahd->platform_data->host);
1da177e4
LT		 2088}
2089
1da177e4 2090void
73a25462 2091ahd_release_simq(struct ahd_softc *ahd)
1da177e4 2092{
7b22da38 2093 scsi_unblock_requests(ahd->platform_data->host);
73a25462 2094}
1da177e4 2095
73a25462 2096static int
6902f416 2097ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd)
73a25462
HR		 2098{
2099 struct ahd_softc *ahd;
2100 struct ahd_linux_device *dev;
2101 struct scb *pending_scb;
2102 u_int saved_scbptr;
2103 u_int active_scbptr;
2104 u_int last_phase;
2105 u_int saved_scsiid;
2106 u_int cdb_byte;
2107 int retval;
2108 int was_paused;
2109 int paused;
2110 int wait;
2111 int disconnected;
2112 ahd_mode_state saved_modes;
4065a413 2113 unsigned long flags;
73a25462
HR		 2114
2115 pending_scb = NULL;
2116 paused = FALSE;
2117 wait = FALSE;
2118 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
2119
017560fc 2120 scmd_printk(KERN_INFO, cmd,
6902f416 2121 "Attempting to queue an ABORT message:");
73a25462
HR		 2122
2123 printf("CDB:");
2124 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
2125 printf(" 0x%x", cmd->cmnd[cdb_byte]);
2126 printf("\n");
2127
4065a413 2128 ahd_lock(ahd, &flags);
1da177e4 2129
1da177e4 2130 /*
73a25462
HR		 2131 * First determine if we currently own this command.
2132 * Start by searching the device queue. If not found
2133 * there, check the pending_scb list. If not found
2134 * at all, and the system wanted us to just abort the
2135 * command, return success.
1da177e4 2136 */
73a25462
HR		 2137 dev = scsi_transport_device_data(cmd->device);
2138
2139 if (dev == NULL) {
2140 /*
2141 * No target device for this command exists,
2142 * so we must not still own the command.
2143 */
017560fc 2144 scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
73a25462
HR		 2145 retval = SUCCESS;
2146 goto no_cmd;
2147 }
1da177e4 2148
1da177e4 2149 /*
73a25462 2150 * See if we can find a matching cmd in the pending list.
1da177e4 2151 */
73a25462
HR		 2152 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
2153 if (pending_scb->io_ctx == cmd)
2154 break;
1da177e4
LT		 2155 }
2156
73a25462 2157 if (pending_scb == NULL) {
017560fc 2158 scmd_printk(KERN_INFO, cmd, "Command not found\n");
73a25462 2159 goto no_cmd;
1da177e4 2160 }
1da177e4 2161
73a25462
HR		 2162 if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
2163 /*
2164 * We can't queue two recovery actions using the same SCB
2165 */
2166 retval = FAILED;
2167 goto done;
2168 }
1da177e4 2169
1da177e4 2170 /*
73a25462
HR		 2171 * Ensure that the card doesn't do anything
2172 * behind our back. Also make sure that we
2173 * didn't "just" miss an interrupt that would
2174 * affect this cmd.
1da177e4 2175 */
73a25462
HR		 2176 was_paused = ahd_is_paused(ahd);
2177 ahd_pause_and_flushwork(ahd);
2178 paused = TRUE;
1da177e4 2179
73a25462 2180 if ((pending_scb->flags & SCB_ACTIVE) == 0) {
017560fc 2181 scmd_printk(KERN_INFO, cmd, "Command already completed\n");
73a25462
HR		 2182 goto no_cmd;
2183 }
1da177e4 2184
73a25462
HR		 2185 printf("%s: At time of recovery, card was %spaused\n",
2186 ahd_name(ahd), was_paused ? "" : "not ");
2187 ahd_dump_card_state(ahd);
1da177e4 2188
73a25462 2189 disconnected = TRUE;
6902f416
HR		 2190 if (ahd_search_qinfifo(ahd, cmd->device->id,
2191 cmd->device->channel + 'A',
2192 cmd->device->lun,
2193 pending_scb->hscb->tag,
2194 ROLE_INITIATOR, CAM_REQ_ABORTED,
2195 SEARCH_COMPLETE) > 0) {
2196 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2197 ahd_name(ahd), cmd->device->channel,
2198 cmd->device->id, cmd->device->lun);
2199 retval = SUCCESS;
2200 goto done;
73a25462 2201 }
1da177e4 2202
73a25462
HR		 2203 saved_modes = ahd_save_modes(ahd);
2204 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
2205 last_phase = ahd_inb(ahd, LASTPHASE);
2206 saved_scbptr = ahd_get_scbptr(ahd);
2207 active_scbptr = saved_scbptr;
6902f416 2208 if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
73a25462 2209 struct scb *bus_scb;
1da177e4 2210
73a25462
HR		 2211 bus_scb = ahd_lookup_scb(ahd, active_scbptr);
2212 if (bus_scb == pending_scb)
2213 disconnected = FALSE;
1da177e4 2214 }
73a25462
HR		 2215
2216 /*
2217 * At this point, pending_scb is the scb associated with the
2218 * passed in command. That command is currently active on the
2219 * bus or is in the disconnected state.
2220 */
2221 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
6902f416
HR		 2222 if (last_phase != P_BUSFREE
2223 && SCB_GET_TAG(pending_scb) == active_scbptr) {
73a25462 2224
1da177e4 2225 /*
73a25462
HR		 2226 * We're active on the bus, so assert ATN
2227 * and hope that the target responds.
1da177e4 2228 */
73a25462 2229 pending_scb = ahd_lookup_scb(ahd, active_scbptr);
6902f416 2230 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
73a25462
HR		 2231 ahd_outb(ahd, MSG_OUT, HOST_MSG);
2232 ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
6902f416 2233 scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n");
73a25462
HR		 2234 wait = TRUE;
2235 } else if (disconnected) {
2236
2237 /*
2238 * Actually re-queue this SCB in an attempt
2239 * to select the device before it reconnects.
2240 */
6902f416 2241 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
73a25462
HR		 2242 ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
2243 pending_scb->hscb->cdb_len = 0;
2244 pending_scb->hscb->task_attribute = 0;
2245 pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
2246
2247 if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
1da177e4 2248 /*
73a25462
HR		 2249 * Mark the SCB has having an outstanding
2250 * task management function. Should the command
2251 * complete normally before the task management
2252 * function can be sent, the host will be notified
2253 * to abort our requeued SCB.
1da177e4 2254 */
73a25462
HR		 2255 ahd_outb(ahd, SCB_TASK_MANAGEMENT,
2256 pending_scb->hscb->task_management);
2257 } else {
2258 /*
2259 * If non-packetized, set the MK_MESSAGE control
2260 * bit indicating that we desire to send a message.
2261 * We also set the disconnected flag since there is
2262 * no guarantee that our SCB control byte matches
2263 * the version on the card. We don't want the
2264 * sequencer to abort the command thinking an
2265 * unsolicited reselection occurred.
2266 */
2267 pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
2268
2269 /*
2270 * The sequencer will never re-reference the
2271 * in-core SCB. To make sure we are notified
2272 * during reslection, set the MK_MESSAGE flag in
2273 * the card's copy of the SCB.
2274 */
2275 ahd_outb(ahd, SCB_CONTROL,
2276 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
1da177e4 2277 }
73a25462 2278
1da177e4 2279 /*
73a25462
HR		 2280 * Clear out any entries in the QINFIFO first
2281 * so we are the next SCB for this target
2282 * to run.
1da177e4 2283 */
73a25462
HR		 2284 ahd_search_qinfifo(ahd, cmd->device->id,
2285 cmd->device->channel + 'A', cmd->device->lun,
2286 SCB_LIST_NULL, ROLE_INITIATOR,
2287 CAM_REQUEUE_REQ, SEARCH_COMPLETE);
2288 ahd_qinfifo_requeue_tail(ahd, pending_scb);
2289 ahd_set_scbptr(ahd, saved_scbptr);
2290 ahd_print_path(ahd, pending_scb);
2291 printf("Device is disconnected, re-queuing SCB\n");
2292 wait = TRUE;
2293 } else {
017560fc 2294 scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n");
73a25462
HR		 2295 retval = FAILED;
2296 goto done;
1da177e4 2297 }
1da177e4 2298
73a25462 2299no_cmd:
1da177e4 2300 /*
73a25462
HR		 2301 * Our assumption is that if we don't have the command, no
2302 * recovery action was required, so we return success. Again,
2303 * the semantics of the mid-layer recovery engine are not
2304 * well defined, so this may change in time.
1da177e4 2305 */
73a25462
HR		 2306 retval = SUCCESS;
2307done:
2308 if (paused)
2309 ahd_unpause(ahd);
2310 if (wait) {
7b22da38 2311 DECLARE_COMPLETION(done);
1da177e4 2312
7b22da38 2313 ahd->platform_data->eh_done = &done;
4065a413
CH		 2314 ahd_unlock(ahd, &flags);
2315
11668bb6 2316 printf("%s: Recovery code sleeping\n", ahd_name(ahd));
7b22da38
HR		 2317 if (!wait_for_completion_timeout(&done, 5 * HZ)) {
2318 ahd_lock(ahd, &flags);
2319 ahd->platform_data->eh_done = NULL;
2320 ahd_unlock(ahd, &flags);
11668bb6
HR		 2321 printf("%s: Timer Expired (active %d)\n",
2322 ahd_name(ahd), dev->active);
73a25462 2323 retval = FAILED;
1da177e4 2324 }
7b22da38 2325 printf("Recovery code awake\n");
eb221849
HR		 2326 } else
2327 ahd_unlock(ahd, &flags);
2328
7b22da38
HR		 2329 if (retval != SUCCESS)
2330 printf("%s: Command abort returning 0x%x\n",
2331 ahd_name(ahd), retval);
2332
2333 return retval;
1da177e4
LT		 2334}
2335
73a25462 2336static void ahd_linux_set_width(struct scsi_target *starget, int width)
1da177e4 2337{
73a25462
HR		 2338 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2339 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2340 struct ahd_devinfo devinfo;
2341 unsigned long flags;
1da177e4 2342
73a25462
HR		 2343 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2344 starget->channel + 'A', ROLE_INITIATOR);
2345 ahd_lock(ahd, &flags);
2346 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE);
2347 ahd_unlock(ahd, &flags);
2348}
2349
2350static void ahd_linux_set_period(struct scsi_target *starget, int period)
2351{
2352 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2353 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2354 struct ahd_tmode_tstate *tstate;
2355 struct ahd_initiator_tinfo *tinfo
2356 = ahd_fetch_transinfo(ahd,
2357 starget->channel + 'A',
2358 shost->this_id, starget->id, &tstate);
2359 struct ahd_devinfo devinfo;
2360 unsigned int ppr_options = tinfo->goal.ppr_options;
a4b53a11 2361 unsigned int dt;
73a25462
HR		 2362 unsigned long flags;
2363 unsigned long offset = tinfo->goal.offset;
1da177e4 2364
a4b53a11
HR		 2365#ifdef AHD_DEBUG
2366 if ((ahd_debug & AHD_SHOW_DV) != 0)
2367 printf("%s: set period to %d\n", ahd_name(ahd), period);
2368#endif
73a25462
HR		 2369 if (offset == 0)
2370 offset = MAX_OFFSET;
1da177e4 2371
73a25462
HR		 2372 if (period < 8)
2373 period = 8;
2374 if (period < 10) {
2375 ppr_options |= MSG_EXT_PPR_DT_REQ;
2376 if (period == 8)
2377 ppr_options |= MSG_EXT_PPR_IU_REQ;
1da177e4
LT		 2378 }
2379
a4b53a11
HR		 2380 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2381
73a25462
HR		 2382 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2383 starget->channel + 'A', ROLE_INITIATOR);
1da177e4 2384
73a25462
HR		 2385 /* all PPR requests apart from QAS require wide transfers */
2386 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
2387 if (spi_width(starget) == 0)
2388 ppr_options &= MSG_EXT_PPR_QAS_REQ;
1da177e4 2389 }
73a25462 2390
a4b53a11
HR		 2391 ahd_find_syncrate(ahd, &period, &ppr_options,
2392 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2393
73a25462
HR		 2394 ahd_lock(ahd, &flags);
2395 ahd_set_syncrate(ahd, &devinfo, period, offset,
2396 ppr_options, AHD_TRANS_GOAL, FALSE);
2397 ahd_unlock(ahd, &flags);
1da177e4
LT		 2398}
2399
73a25462 2400static void ahd_linux_set_offset(struct scsi_target *starget, int offset)
1da177e4 2401{
73a25462
HR		 2402 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2403 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2404 struct ahd_tmode_tstate *tstate;
2405 struct ahd_initiator_tinfo *tinfo
2406 = ahd_fetch_transinfo(ahd,
2407 starget->channel + 'A',
2408 shost->this_id, starget->id, &tstate);
2409 struct ahd_devinfo devinfo;
2410 unsigned int ppr_options = 0;
2411 unsigned int period = 0;
a4b53a11 2412 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
73a25462
HR		 2413 unsigned long flags;
2414
a4b53a11
HR		 2415#ifdef AHD_DEBUG
2416 if ((ahd_debug & AHD_SHOW_DV) != 0)
2417 printf("%s: set offset to %d\n", ahd_name(ahd), offset);
2418#endif
2419
73a25462
HR		 2420 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2421 starget->channel + 'A', ROLE_INITIATOR);
2422 if (offset != 0) {
2423 period = tinfo->goal.period;
2424 ppr_options = tinfo->goal.ppr_options;
a4b53a11
HR		 2425 ahd_find_syncrate(ahd, &period, &ppr_options,
2426 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
1da177e4 2427 }
a4b53a11 2428
73a25462
HR		 2429 ahd_lock(ahd, &flags);
2430 ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
2431 AHD_TRANS_GOAL, FALSE);
2432 ahd_unlock(ahd, &flags);
1da177e4
LT		 2433}
2434
73a25462 2435static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
1da177e4 2436{
73a25462
HR		 2437 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2438 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2439 struct ahd_tmode_tstate *tstate;
2440 struct ahd_initiator_tinfo *tinfo
2441 = ahd_fetch_transinfo(ahd,
2442 starget->channel + 'A',
2443 shost->this_id, starget->id, &tstate);
2444 struct ahd_devinfo devinfo;
2445 unsigned int ppr_options = tinfo->goal.ppr_options
2446 & ~MSG_EXT_PPR_DT_REQ;
2447 unsigned int period = tinfo->goal.period;
52b5cfb3 2448 unsigned int width = tinfo->goal.width;
73a25462
HR		 2449 unsigned long flags;
2450
a4b53a11
HR		 2451#ifdef AHD_DEBUG
2452 if ((ahd_debug & AHD_SHOW_DV) != 0)
2453 printf("%s: %s DT\n", ahd_name(ahd),
2454 dt ? "enabling" : "disabling");
2455#endif
73a25462
HR		 2456 if (dt) {
2457 ppr_options |= MSG_EXT_PPR_DT_REQ;
52b5cfb3
HR		 2458 if (!width)
2459 ahd_linux_set_width(starget, 1);
a4b53a11
HR		 2460 } else {
2461 if (period <= 9)
2462 period = 10; /* If resetting DT, period must be >= 25ns */
2463 /* IU is invalid without DT set */
2464 ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2465 }
73a25462
HR		 2466 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2467 starget->channel + 'A', ROLE_INITIATOR);
2468 ahd_find_syncrate(ahd, &period, &ppr_options,
2469 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2470
73a25462
HR		 2471 ahd_lock(ahd, &flags);
2472 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2473 ppr_options, AHD_TRANS_GOAL, FALSE);
2474 ahd_unlock(ahd, &flags);
1da177e4
LT		 2475}
2476
73a25462 2477static void ahd_linux_set_qas(struct scsi_target *starget, int qas)
1da177e4 2478{
73a25462
HR		 2479 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2480 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2481 struct ahd_tmode_tstate *tstate;
2482 struct ahd_initiator_tinfo *tinfo
2483 = ahd_fetch_transinfo(ahd,
2484 starget->channel + 'A',
2485 shost->this_id, starget->id, &tstate);
2486 struct ahd_devinfo devinfo;
2487 unsigned int ppr_options = tinfo->goal.ppr_options
2488 & ~MSG_EXT_PPR_QAS_REQ;
2489 unsigned int period = tinfo->goal.period;
a4b53a11 2490 unsigned int dt;
73a25462
HR		 2491 unsigned long flags;
2492
a4b53a11
HR		 2493#ifdef AHD_DEBUG
2494 if ((ahd_debug & AHD_SHOW_DV) != 0)
2495 printf("%s: %s QAS\n", ahd_name(ahd),
2496 qas ? "enabling" : "disabling");
2497#endif
2498
2499 if (qas) {
2500 ppr_options |= MSG_EXT_PPR_QAS_REQ;
2501 }
2502
2503 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
73a25462
HR		 2504
2505 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2506 starget->channel + 'A', ROLE_INITIATOR);
2507 ahd_find_syncrate(ahd, &period, &ppr_options,
2508 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2509
73a25462
HR		 2510 ahd_lock(ahd, &flags);
2511 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2512 ppr_options, AHD_TRANS_GOAL, FALSE);
2513 ahd_unlock(ahd, &flags);
1da177e4
LT		 2514}
2515
73a25462 2516static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
1da177e4 2517{
73a25462
HR		 2518 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2519 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2520 struct ahd_tmode_tstate *tstate;
2521 struct ahd_initiator_tinfo *tinfo
2522 = ahd_fetch_transinfo(ahd,
2523 starget->channel + 'A',
2524 shost->this_id, starget->id, &tstate);
2525 struct ahd_devinfo devinfo;
2526 unsigned int ppr_options = tinfo->goal.ppr_options
2527 & ~MSG_EXT_PPR_IU_REQ;
2528 unsigned int period = tinfo->goal.period;
a4b53a11 2529 unsigned int dt;
73a25462
HR		 2530 unsigned long flags;
2531
a4b53a11
HR		 2532#ifdef AHD_DEBUG
2533 if ((ahd_debug & AHD_SHOW_DV) != 0)
2534 printf("%s: %s IU\n", ahd_name(ahd),
2535 iu ? "enabling" : "disabling");
2536#endif
2537
2538 if (iu) {
73a25462 2539 ppr_options |= MSG_EXT_PPR_IU_REQ;
a4b53a11
HR		 2540 ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
2541 }
2542
2543 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
73a25462
HR		 2544
2545 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2546 starget->channel + 'A', ROLE_INITIATOR);
2547 ahd_find_syncrate(ahd, &period, &ppr_options,
2548 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2549
73a25462
HR		 2550 ahd_lock(ahd, &flags);
2551 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2552 ppr_options, AHD_TRANS_GOAL, FALSE);
2553 ahd_unlock(ahd, &flags);
2554}
1da177e4 2555
73a25462
HR		 2556static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
2557{
2558 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2559 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2560 struct ahd_tmode_tstate *tstate;
2561 struct ahd_initiator_tinfo *tinfo
2562 = ahd_fetch_transinfo(ahd,
2563 starget->channel + 'A',
2564 shost->this_id, starget->id, &tstate);
2565 struct ahd_devinfo devinfo;
2566 unsigned int ppr_options = tinfo->goal.ppr_options
2567 & ~MSG_EXT_PPR_RD_STRM;
2568 unsigned int period = tinfo->goal.period;
2569 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2570 unsigned long flags;
2571
a4b53a11
HR		 2572#ifdef AHD_DEBUG
2573 if ((ahd_debug & AHD_SHOW_DV) != 0)
2574 printf("%s: %s Read Streaming\n", ahd_name(ahd),
2575 rdstrm ? "enabling" : "disabling");
2576#endif
2577
73a25462
HR		 2578 if (rdstrm)
2579 ppr_options |= MSG_EXT_PPR_RD_STRM;
2580
2581 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2582 starget->channel + 'A', ROLE_INITIATOR);
2583 ahd_find_syncrate(ahd, &period, &ppr_options,
2584 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2585
a4b53a11
HR		 2586 ahd_lock(ahd, &flags);
2587 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2588 ppr_options, AHD_TRANS_GOAL, FALSE);
2589 ahd_unlock(ahd, &flags);
2590}
2591
2592static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
2593{
2594 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2595 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2596 struct ahd_tmode_tstate *tstate;
2597 struct ahd_initiator_tinfo *tinfo
2598 = ahd_fetch_transinfo(ahd,
2599 starget->channel + 'A',
2600 shost->this_id, starget->id, &tstate);
2601 struct ahd_devinfo devinfo;
2602 unsigned int ppr_options = tinfo->goal.ppr_options
2603 & ~MSG_EXT_PPR_WR_FLOW;
2604 unsigned int period = tinfo->goal.period;
2605 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2606 unsigned long flags;
2607
2608#ifdef AHD_DEBUG
2609 if ((ahd_debug & AHD_SHOW_DV) != 0)
2610 printf("%s: %s Write Flow Control\n", ahd_name(ahd),
2611 wrflow ? "enabling" : "disabling");
2612#endif
2613
2614 if (wrflow)
2615 ppr_options |= MSG_EXT_PPR_WR_FLOW;
2616
2617 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2618 starget->channel + 'A', ROLE_INITIATOR);
2619 ahd_find_syncrate(ahd, &period, &ppr_options,
2620 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2621
a4b53a11
HR		 2622 ahd_lock(ahd, &flags);
2623 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2624 ppr_options, AHD_TRANS_GOAL, FALSE);
2625 ahd_unlock(ahd, &flags);
2626}
2627
2628static void ahd_linux_set_rti(struct scsi_target *starget, int rti)
2629{
2630 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2631 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2632 struct ahd_tmode_tstate *tstate;
2633 struct ahd_initiator_tinfo *tinfo
2634 = ahd_fetch_transinfo(ahd,
2635 starget->channel + 'A',
2636 shost->this_id, starget->id, &tstate);
2637 struct ahd_devinfo devinfo;
2638 unsigned int ppr_options = tinfo->goal.ppr_options
2639 & ~MSG_EXT_PPR_RTI;
2640 unsigned int period = tinfo->goal.period;
2641 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2642 unsigned long flags;
2643
2644 if ((ahd->features & AHD_RTI) == 0) {
2645#ifdef AHD_DEBUG
2646 if ((ahd_debug & AHD_SHOW_DV) != 0)
2647 printf("%s: RTI not available\n", ahd_name(ahd));
2648#endif
2649 return;
2650 }
2651
2652#ifdef AHD_DEBUG
2653 if ((ahd_debug & AHD_SHOW_DV) != 0)
2654 printf("%s: %s RTI\n", ahd_name(ahd),
2655 rti ? "enabling" : "disabling");
2656#endif
2657
2658 if (rti)
2659 ppr_options |= MSG_EXT_PPR_RTI;
2660
2661 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2662 starget->channel + 'A', ROLE_INITIATOR);
2663 ahd_find_syncrate(ahd, &period, &ppr_options,
2664 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2665
a4b53a11
HR		 2666 ahd_lock(ahd, &flags);
2667 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2668 ppr_options, AHD_TRANS_GOAL, FALSE);
2669 ahd_unlock(ahd, &flags);
2670}
2671
2672static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
2673{
2674 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2675 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2676 struct ahd_tmode_tstate *tstate;
2677 struct ahd_initiator_tinfo *tinfo
2678 = ahd_fetch_transinfo(ahd,
2679 starget->channel + 'A',
2680 shost->this_id, starget->id, &tstate);
2681 struct ahd_devinfo devinfo;
2682 unsigned int ppr_options = tinfo->goal.ppr_options
2683 & ~MSG_EXT_PPR_PCOMP_EN;
2684 unsigned int period = tinfo->goal.period;
2685 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2686 unsigned long flags;
2687
2688#ifdef AHD_DEBUG
2689 if ((ahd_debug & AHD_SHOW_DV) != 0)
2690 printf("%s: %s Precompensation\n", ahd_name(ahd),
2691 pcomp ? "Enable" : "Disable");
2692#endif
2693
2694 if (pcomp)
2695 ppr_options |= MSG_EXT_PPR_PCOMP_EN;
2696
2697 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2698 starget->channel + 'A', ROLE_INITIATOR);
2699 ahd_find_syncrate(ahd, &period, &ppr_options,
2700 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2701
73a25462
HR		 2702 ahd_lock(ahd, &flags);
2703 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2704 ppr_options, AHD_TRANS_GOAL, FALSE);
2705 ahd_unlock(ahd, &flags);
1da177e4
LT		 2706}
2707
88ff29a4
JB		 2708static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
2709{
2710 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2711 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2712 struct ahd_tmode_tstate *tstate;
2713 struct ahd_initiator_tinfo *tinfo
2714 = ahd_fetch_transinfo(ahd,
2715 starget->channel + 'A',
2716 shost->this_id, starget->id, &tstate);
2717 struct ahd_devinfo devinfo;
2718 unsigned int ppr_options = tinfo->goal.ppr_options
2719 & ~MSG_EXT_PPR_HOLD_MCS;
2720 unsigned int period = tinfo->goal.period;
2721 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2722 unsigned long flags;
2723
2724 if (hold)
2725 ppr_options |= MSG_EXT_PPR_HOLD_MCS;
2726
2727 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2728 starget->channel + 'A', ROLE_INITIATOR);
2729 ahd_find_syncrate(ahd, &period, &ppr_options,
2730 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2731
2732 ahd_lock(ahd, &flags);
2733 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2734 ppr_options, AHD_TRANS_GOAL, FALSE);
2735 ahd_unlock(ahd, &flags);
2736}
2737
2738
2739
73a25462
HR		 2740static struct spi_function_template ahd_linux_transport_functions = {
2741 .set_offset = ahd_linux_set_offset,
2742 .show_offset = 1,
2743 .set_period = ahd_linux_set_period,
2744 .show_period = 1,
2745 .set_width = ahd_linux_set_width,
2746 .show_width = 1,
2747 .set_dt = ahd_linux_set_dt,
2748 .show_dt = 1,
2749 .set_iu = ahd_linux_set_iu,
2750 .show_iu = 1,
2751 .set_qas = ahd_linux_set_qas,
2752 .show_qas = 1,
2753 .set_rd_strm = ahd_linux_set_rd_strm,
2754 .show_rd_strm = 1,
a4b53a11
HR		 2755 .set_wr_flow = ahd_linux_set_wr_flow,
2756 .show_wr_flow = 1,
2757 .set_rti = ahd_linux_set_rti,
2758 .show_rti = 1,
2759 .set_pcomp_en = ahd_linux_set_pcomp_en,
2760 .show_pcomp_en = 1,
88ff29a4
JB		 2761 .set_hold_mcs = ahd_linux_set_hold_mcs,
2762 .show_hold_mcs = 1,
73a25462
HR		 2763};
2764
1da177e4
LT		 2765static int __init
2766ahd_linux_init(void)
2767{
85a46523
CH		 2768 int error = 0;
2769
2770 /*
2771 * If we've been passed any parameters, process them now.
2772 */
2773 if (aic79xx)
2774 aic79xx_setup(aic79xx);
2775
2776 ahd_linux_transport_template =
2777 spi_attach_transport(&ahd_linux_transport_functions);
73a25462
HR		 2778 if (!ahd_linux_transport_template)
2779 return -ENODEV;
85a46523 2780
73a25462
HR		 2781 scsi_transport_reserve_target(ahd_linux_transport_template,
2782 sizeof(struct ahd_linux_target));
2783 scsi_transport_reserve_device(ahd_linux_transport_template,
2784 sizeof(struct ahd_linux_device));
a80b3424 2785
85a46523
CH		 2786 error = ahd_linux_pci_init();
2787 if (error)
2788 spi_release_transport(ahd_linux_transport_template);
2789 return error;
1da177e4
LT		 2790}
2791
2792static void __exit
2793ahd_linux_exit(void)
2794{
1da177e4 2795 ahd_linux_pci_exit();
73a25462 2796 spi_release_transport(ahd_linux_transport_template);
1da177e4
LT		 2797}
2798
2799module_init(ahd_linux_init);
2800module_exit(ahd_linux_exit);
Linux kernel - Deliverables
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