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scsi: aic7xxx: Remove pci-dma-compat wrapper API
[mirror_ubuntu-hirsute-kernel.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>
5a0e3ad6 56#include <linux/slab.h>
1da177e4 57
1da177e4
LT		 58/*
59 * Bucket size for counting good commands in between bad ones.
60 */
61#define AHD_LINUX_ERR_THRESH 1000
62
63/*
64 * Set this to the delay in seconds after SCSI bus reset.
65 * Note, we honor this only for the initial bus reset.
66 * The scsi error recovery code performs its own bus settle
67 * delay handling for error recovery actions.
68 */
69#ifdef CONFIG_AIC79XX_RESET_DELAY_MS
70#define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS
71#else
72#define AIC79XX_RESET_DELAY 5000
73#endif
74
75/*
76 * To change the default number of tagged transactions allowed per-device,
77 * add a line to the lilo.conf file like:
78 * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}"
79 * which will result in the first four devices on the first two
80 * controllers being set to a tagged queue depth of 32.
81 *
82 * The tag_commands is an array of 16 to allow for wide and twin adapters.
83 * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
84 * for channel 1.
85 */
86typedef struct {
87 uint16_t tag_commands[16]; /* Allow for wide/twin adapters. */
88} adapter_tag_info_t;
89
90/*
91 * Modify this as you see fit for your system.
92 *
93 * 0 tagged queuing disabled
94 * 1 <= n <= 253 n == max tags ever dispatched.
95 *
96 * The driver will throttle the number of commands dispatched to a
97 * device if it returns queue full. For devices with a fixed maximum
98 * queue depth, the driver will eventually determine this depth and
99 * lock it in (a console message is printed to indicate that a lock
100 * has occurred). On some devices, queue full is returned for a temporary
101 * resource shortage. These devices will return queue full at varying
102 * depths. The driver will throttle back when the queue fulls occur and
103 * attempt to slowly increase the depth over time as the device recovers
104 * from the resource shortage.
105 *
106 * In this example, the first line will disable tagged queueing for all
107 * the devices on the first probed aic79xx adapter.
108 *
109 * The second line enables tagged queueing with 4 commands/LUN for IDs
110 * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
111 * driver to attempt to use up to 64 tags for ID 1.
112 *
113 * The third line is the same as the first line.
114 *
115 * The fourth line disables tagged queueing for devices 0 and 3. It
116 * enables tagged queueing for the other IDs, with 16 commands/LUN
117 * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
118 * IDs 2, 5-7, and 9-15.
119 */
120
121/*
122 * NOTE: The below structure is for reference only, the actual structure
123 * to modify in order to change things is just below this comment block.
124adapter_tag_info_t aic79xx_tag_info[] =
125{
126 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
127 {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}},
128 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
129 {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
130};
131*/
132
133#ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE
134#define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE
135#else
136#define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE
137#endif
138
139#define AIC79XX_CONFIGED_TAG_COMMANDS { \
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 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \
148}
149
150/*
151 * By default, use the number of commands specified by
152 * the users kernel configuration.
153 */
154static adapter_tag_info_t aic79xx_tag_info[] =
155{
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 {AIC79XX_CONFIGED_TAG_COMMANDS}
172};
173
1da177e4
LT		 174/*
175 * The I/O cell on the chip is very configurable in respect to its analog
176 * characteristics. Set the defaults here; they can be overriden with
177 * the proper insmod parameters.
178 */
179struct ahd_linux_iocell_opts
180{
181 uint8_t precomp;
182 uint8_t slewrate;
183 uint8_t amplitude;
184};
185#define AIC79XX_DEFAULT_PRECOMP 0xFF
186#define AIC79XX_DEFAULT_SLEWRATE 0xFF
187#define AIC79XX_DEFAULT_AMPLITUDE 0xFF
188#define AIC79XX_DEFAULT_IOOPTS \
189{ \
190 AIC79XX_DEFAULT_PRECOMP, \
191 AIC79XX_DEFAULT_SLEWRATE, \
192 AIC79XX_DEFAULT_AMPLITUDE \
193}
194#define AIC79XX_PRECOMP_INDEX 0
195#define AIC79XX_SLEWRATE_INDEX 1
196#define AIC79XX_AMPLITUDE_INDEX 2
980b306a 197static const struct ahd_linux_iocell_opts aic79xx_iocell_info[] =
1da177e4
LT		 198{
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 AIC79XX_DEFAULT_IOOPTS
215};
216
217/*
218 * There should be a specific return value for this in scsi.h, but
219 * it seems that most drivers ignore it.
220 */
221#define DID_UNDERFLOW DID_ERROR
222
223void
224ahd_print_path(struct ahd_softc *ahd, struct scb *scb)
225{
226 printk("(scsi%d:%c:%d:%d): ",
227 ahd->platform_data->host->host_no,
228 scb != NULL ? SCB_GET_CHANNEL(ahd, scb) : 'X',
229 scb != NULL ? SCB_GET_TARGET(ahd, scb) : -1,
230 scb != NULL ? SCB_GET_LUN(scb) : -1);
231}
232
233/*
234 * XXX - these options apply unilaterally to _all_ adapters
235 * cards in the system. This should be fixed. Exceptions to this
236 * rule are noted in the comments.
237 */
238
239/*
240 * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
241 * has no effect on any later resets that might occur due to things like
242 * SCSI bus timeouts.
243 */
244static uint32_t aic79xx_no_reset;
245
1da177e4
LT		 246/*
247 * Should we force EXTENDED translation on a controller.
248 * 0 == Use whatever is in the SEEPROM or default to off
249 * 1 == Use whatever is in the SEEPROM or default to on
250 */
251static uint32_t aic79xx_extended;
252
253/*
254 * PCI bus parity checking of the Adaptec controllers. This is somewhat
255 * dubious at best. To my knowledge, this option has never actually
256 * solved a PCI parity problem, but on certain machines with broken PCI
257 * chipset configurations, it can generate tons of false error messages.
258 * It's included in the driver for completeness.
259 * 0 = Shut off PCI parity check
260 * non-0 = Enable PCI parity check
261 *
262 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
263 * variable to -1 you would actually want to simply pass the variable
264 * name without a number. That will invert the 0 which will result in
265 * -1.
266 */
267static uint32_t aic79xx_pci_parity = ~0;
268
269/*
270 * There are lots of broken chipsets in the world. Some of them will
271 * violate the PCI spec when we issue byte sized memory writes to our
272 * controller. I/O mapped register access, if allowed by the given
273 * platform, will work in almost all cases.
274 */
275uint32_t aic79xx_allow_memio = ~0;
276
1da177e4
LT		 277/*
278 * So that we can set how long each device is given as a selection timeout.
279 * The table of values goes like this:
280 * 0 - 256ms
281 * 1 - 128ms
282 * 2 - 64ms
283 * 3 - 32ms
284 * We default to 256ms because some older devices need a longer time
285 * to respond to initial selection.
286 */
287static uint32_t aic79xx_seltime;
288
289/*
290 * Certain devices do not perform any aging on commands. Should the
291 * device be saturated by commands in one portion of the disk, it is
292 * possible for transactions on far away sectors to never be serviced.
293 * To handle these devices, we can periodically send an ordered tag to
294 * force all outstanding transactions to be serviced prior to a new
295 * transaction.
296 */
289fe5b1 297static uint32_t aic79xx_periodic_otag;
1da177e4 298
3fb08612
HR		 299/* Some storage boxes are using an LSI chip which has a bug making it
300 * impossible to use aic79xx Rev B chip in 320 speeds. The following
301 * storage boxes have been reported to be buggy:
302 * EonStor 3U 16-Bay: U16U-G3A3
303 * EonStor 2U 12-Bay: U12U-G3A3
304 * SentinelRAID: 2500F R5 / R6
305 * SentinelRAID: 2500F R1
306 * SentinelRAID: 2500F/1500F
307 * SentinelRAID: 150F
308 *
309 * To get around this LSI bug, you can set your board to 160 mode
310 * or you can enable the SLOWCRC bit.
311 */
312uint32_t aic79xx_slowcrc;
313
1da177e4
LT		 314/*
315 * Module information and settable options.
316 */
317static char *aic79xx = NULL;
318
64624d4f
HR		 319MODULE_AUTHOR("Maintainer: Hannes Reinecke <hare@suse.de>");
320MODULE_DESCRIPTION("Adaptec AIC790X U320 SCSI Host Bus Adapter driver");
1da177e4
LT		 321MODULE_LICENSE("Dual BSD/GPL");
322MODULE_VERSION(AIC79XX_DRIVER_VERSION);
73a25462 323module_param(aic79xx, charp, 0444);
1da177e4 324MODULE_PARM_DESC(aic79xx,
2b6ee9b5 325"period-delimited options string:\n"
1da177e4
LT		 326" verbose Enable verbose/diagnostic logging\n"
327" allow_memio Allow device registers to be memory mapped\n"
328" debug Bitmask of debug values to enable\n"
b1c11812 329" no_reset Suppress initial bus resets\n"
1da177e4
LT		 330" extended Enable extended geometry on all controllers\n"
331" periodic_otag Send an ordered tagged transaction\n"
332" periodically to prevent tag starvation.\n"
333" This may be required by some older disk\n"
334" or drives/RAID arrays.\n"
1da177e4
LT		 335" tag_info:<tag_str> Set per-target tag depth\n"
336" global_tag_depth:<int> Global tag depth for all targets on all buses\n"
1da177e4
LT		 337" slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
338" precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
339" amplitude:<int> Set the signal amplitude (0-7).\n"
340" seltime:<int> Selection Timeout:\n"
341" (0/256ms,1/128ms,2/64ms,3/32ms)\n"
3fb08612 342" slowcrc Turn on the SLOWCRC bit (Rev B only)\n"
1da177e4 343"\n"
970e2486
LDM		 344" Sample modprobe configuration file:\n"
345" # Enable verbose logging\n"
346" # Set tag depth on Controller 2/Target 2 to 10 tags\n"
347" # Shorten the selection timeout to 128ms\n"
1da177e4
LT		 348"\n"
349" options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
2b6ee9b5 350);
1da177e4
LT		 351
352static void ahd_linux_handle_scsi_status(struct ahd_softc *,
73a25462 353 struct scsi_device *,
1da177e4
LT		 354 struct scb *);
355static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd,
73a25462 356 struct scsi_cmnd *cmd);
6902f416 357static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd);
1da177e4 358static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd);
1da177e4
LT		 359static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd,
360 struct ahd_devinfo *devinfo);
73a25462 361static void ahd_linux_device_queue_depth(struct scsi_device *);
60a13213 362static int ahd_linux_run_command(struct ahd_softc*,
73a25462 363 struct ahd_linux_device *,
60a13213 364 struct scsi_cmnd *);
1da177e4 365static void ahd_linux_setup_tag_info_global(char *p);
73a25462 366static int aic79xx_setup(char *c);
e3e0ca51
AB		 367static void ahd_freeze_simq(struct ahd_softc *ahd);
368static void ahd_release_simq(struct ahd_softc *ahd);
85a46523
CH		 369
370static int ahd_linux_unit;
371
1da177e4 372
be0d6768
DV		 373/************************** OS Utility Wrappers *******************************/
374void ahd_delay(long);
375void
376ahd_delay(long usec)
377{
378 /*
379 * udelay on Linux can have problems for
380 * multi-millisecond waits. Wait at most
381 * 1024us per call.
382 */
383 while (usec > 0) {
384 udelay(usec % 1024);
385 usec -= 1024;
386 }
387}
388
389
390/***************************** Low Level I/O **********************************/
391uint8_t ahd_inb(struct ahd_softc * ahd, long port);
be0d6768
DV		 392void ahd_outb(struct ahd_softc * ahd, long port, uint8_t val);
393void ahd_outw_atomic(struct ahd_softc * ahd,
394 long port, uint16_t val);
395void ahd_outsb(struct ahd_softc * ahd, long port,
396 uint8_t *, int count);
397void ahd_insb(struct ahd_softc * ahd, long port,
398 uint8_t *, int count);
399
400uint8_t
401ahd_inb(struct ahd_softc * ahd, long port)
402{
403 uint8_t x;
404
405 if (ahd->tags[0] == BUS_SPACE_MEMIO) {
406 x = readb(ahd->bshs[0].maddr + port);
407 } else {
408 x = inb(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF));
409 }
410 mb();
411 return (x);
412}
413
d1d7b19d
DV		 414#if 0 /* unused */
415static uint16_t
be0d6768
DV		 416ahd_inw_atomic(struct ahd_softc * ahd, long port)
417{
418 uint8_t x;
419
420 if (ahd->tags[0] == BUS_SPACE_MEMIO) {
421 x = readw(ahd->bshs[0].maddr + port);
422 } else {
423 x = inw(ahd->bshs[(port) >> 8].ioport + ((port) & 0xFF));
424 }
425 mb();
426 return (x);
427}
d1d7b19d 428#endif
be0d6768
DV		 429
430void
431ahd_outb(struct ahd_softc * ahd, long port, uint8_t val)
432{
433 if (ahd->tags[0] == BUS_SPACE_MEMIO) {
434 writeb(val, ahd->bshs[0].maddr + port);
435 } else {
436 outb(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));
437 }
438 mb();
439}
440
441void
442ahd_outw_atomic(struct ahd_softc * ahd, long port, uint16_t val)
443{
444 if (ahd->tags[0] == BUS_SPACE_MEMIO) {
445 writew(val, ahd->bshs[0].maddr + port);
446 } else {
447 outw(val, ahd->bshs[(port) >> 8].ioport + (port & 0xFF));
448 }
449 mb();
450}
451
452void
453ahd_outsb(struct ahd_softc * ahd, long port, uint8_t *array, int count)
454{
455 int i;
456
457 /*
458 * There is probably a more efficient way to do this on Linux
459 * but we don't use this for anything speed critical and this
460 * should work.
461 */
462 for (i = 0; i < count; i++)
463 ahd_outb(ahd, port, *array++);
464}
465
466void
467ahd_insb(struct ahd_softc * ahd, long port, uint8_t *array, int count)
468{
469 int i;
470
471 /*
472 * There is probably a more efficient way to do this on Linux
473 * but we don't use this for anything speed critical and this
474 * should work.
475 */
476 for (i = 0; i < count; i++)
477 *array++ = ahd_inb(ahd, port);
478}
479
480/******************************* PCI Routines *********************************/
481uint32_t
482ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width)
483{
484 switch (width) {
485 case 1:
486 {
487 uint8_t retval;
488
489 pci_read_config_byte(pci, reg, &retval);
490 return (retval);
491 }
492 case 2:
493 {
494 uint16_t retval;
495 pci_read_config_word(pci, reg, &retval);
496 return (retval);
497 }
498 case 4:
499 {
500 uint32_t retval;
501 pci_read_config_dword(pci, reg, &retval);
502 return (retval);
503 }
504 default:
505 panic("ahd_pci_read_config: Read size too big");
506 /* NOTREACHED */
507 return (0);
508 }
509}
510
511void
512ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width)
513{
514 switch (width) {
515 case 1:
516 pci_write_config_byte(pci, reg, value);
517 break;
518 case 2:
519 pci_write_config_word(pci, reg, value);
520 break;
521 case 4:
522 pci_write_config_dword(pci, reg, value);
523 break;
524 default:
525 panic("ahd_pci_write_config: Write size too big");
526 /* NOTREACHED */
527 }
528}
529
1da177e4 530/****************************** Inlines ***************************************/
be0d6768 531static void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
1da177e4 532
be0d6768 533static void
1da177e4
LT		 534ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
535{
73a25462 536 struct scsi_cmnd *cmd;
1da177e4
LT		 537
538 cmd = scb->io_ctx;
1da177e4 539 ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE);
4c688fc7 540 scsi_dma_unmap(cmd);
1da177e4
LT		 541}
542
543/******************************** Macros **************************************/
544#define BUILD_SCSIID(ahd, cmd) \
422c0d61 545 (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
1da177e4 546
1da177e4
LT		 547/*
548 * Return a string describing the driver.
549 */
550static const char *
551ahd_linux_info(struct Scsi_Host *host)
552{
553 static char buffer[512];
554 char ahd_info[256];
555 char *bp;
556 struct ahd_softc *ahd;
557
558 bp = &buffer[0];
559 ahd = *(struct ahd_softc **)host->hostdata;
560 memset(bp, 0, sizeof(buffer));
980b306a
DV		 561 strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev " AIC79XX_DRIVER_VERSION "\n"
562 " <");
1da177e4 563 strcat(bp, ahd->description);
980b306a
DV		 564 strcat(bp, ">\n"
565 " ");
1da177e4
LT		 566 ahd_controller_info(ahd, ahd_info);
567 strcat(bp, ahd_info);
1da177e4
LT		 568
569 return (bp);
570}
571
572/*
573 * Queue an SCB to the controller.
574 */
575static int
f281233d 576ahd_linux_queue_lck(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
1da177e4
LT		 577{
578 struct ahd_softc *ahd;
73a25462 579 struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device);
4065a413 580 int rtn = SCSI_MLQUEUE_HOST_BUSY;
1da177e4
LT		 581
582 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
583
7b22da38
HR		 584 cmd->scsi_done = scsi_done;
585 cmd->result = CAM_REQ_INPROG << 16;
586 rtn = ahd_linux_run_command(ahd, dev, cmd);
1da177e4 587
4065a413 588 return rtn;
1da177e4
LT		 589}
590
f281233d
JG		 591static DEF_SCSI_QCMD(ahd_linux_queue)
592
be0d6768 593static struct scsi_target **
73a25462
HR		 594ahd_linux_target_in_softc(struct scsi_target *starget)
595{
596 struct ahd_softc *ahd =
597 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
598 unsigned int target_offset;
599
600 target_offset = starget->id;
601 if (starget->channel != 0)
602 target_offset += 8;
603
604 return &ahd->platform_data->starget[target_offset];
605}
606
1da177e4 607static int
73a25462 608ahd_linux_target_alloc(struct scsi_target *starget)
1da177e4 609{
73a25462
HR		 610 struct ahd_softc *ahd =
611 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
986a25f9 612 struct seeprom_config *sc = ahd->seep_config;
73a25462
HR		 613 unsigned long flags;
614 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
73a25462
HR		 615 struct ahd_devinfo devinfo;
616 struct ahd_initiator_tinfo *tinfo;
617 struct ahd_tmode_tstate *tstate;
618 char channel = starget->channel + 'A';
1da177e4 619
73a25462
HR		 620 ahd_lock(ahd, &flags);
621
622 BUG_ON(*ahd_targp != NULL);
623
624 *ahd_targp = starget;
73a25462 625
986a25f9
HR		 626 if (sc) {
627 int flags = sc->device_flags[starget->id];
628
629 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
630 starget->id, &tstate);
631
632 if ((flags & CFPACKETIZED) == 0) {
ea443190
JB		 633 /* don't negotiate packetized (IU) transfers */
634 spi_max_iu(starget) = 0;
986a25f9
HR		 635 } else {
636 if ((ahd->features & AHD_RTI) == 0)
637 spi_rti(starget) = 0;
638 }
639
640 if ((flags & CFQAS) == 0)
ea443190 641 spi_max_qas(starget) = 0;
986a25f9
HR		 642
643 /* Transinfo values have been set to BIOS settings */
644 spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0;
645 spi_min_period(starget) = tinfo->user.period;
646 spi_max_offset(starget) = tinfo->user.offset;
647 }
648
73a25462
HR		 649 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
650 starget->id, &tstate);
651 ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id,
652 CAM_LUN_WILDCARD, channel,
653 ROLE_INITIATOR);
73a25462
HR		 654 ahd_set_syncrate(ahd, &devinfo, 0, 0, 0,
655 AHD_TRANS_GOAL, /*paused*/FALSE);
656 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
657 AHD_TRANS_GOAL, /*paused*/FALSE);
658 ahd_unlock(ahd, &flags);
659
660 return 0;
661}
662
663static void
664ahd_linux_target_destroy(struct scsi_target *starget)
665{
666 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
667
668 *ahd_targp = NULL;
1da177e4
LT		 669}
670
671static int
73a25462 672ahd_linux_slave_alloc(struct scsi_device *sdev)
1da177e4 673{
73a25462
HR		 674 struct ahd_softc *ahd =
675 *((struct ahd_softc **)sdev->host->hostdata);
73a25462 676 struct ahd_linux_device *dev;
1da177e4 677
1da177e4 678 if (bootverbose)
48813cf9 679 printk("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id);
73a25462 680
73a25462
HR		 681 dev = scsi_transport_device_data(sdev);
682 memset(dev, 0, sizeof(*dev));
683
684 /*
685 * We start out life using untagged
686 * transactions of which we allow one.
687 */
688 dev->openings = 1;
689
1da177e4 690 /*
73a25462
HR		 691 * Set maxtags to 0. This will be changed if we
692 * later determine that we are dealing with
693 * a tagged queuing capable device.
1da177e4 694 */
73a25462
HR		 695 dev->maxtags = 0;
696
1da177e4
LT		 697 return (0);
698}
699
73a25462
HR		 700static int
701ahd_linux_slave_configure(struct scsi_device *sdev)
702{
73a25462 703 if (bootverbose)
017560fc 704 sdev_printk(KERN_INFO, sdev, "Slave Configure\n");
73a25462
HR		 705
706 ahd_linux_device_queue_depth(sdev);
707
708 /* Initial Domain Validation */
709 if (!spi_initial_dv(sdev->sdev_target))
710 spi_dv_device(sdev);
711
712 return 0;
713}
714
1da177e4
LT		 715#if defined(__i386__)
716/*
717 * Return the disk geometry for the given SCSI device.
718 */
719static int
1da177e4
LT		 720ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
721 sector_t capacity, int geom[])
722{
1da177e4
LT		 723 int heads;
724 int sectors;
725 int cylinders;
1da177e4
LT		 726 int extended;
727 struct ahd_softc *ahd;
728
729 ahd = *((struct ahd_softc **)sdev->host->hostdata);
730
a10183d7
CH		 731 if (scsi_partsize(bdev, capacity, geom))
732 return 0;
733
1da177e4
LT		 734 heads = 64;
735 sectors = 32;
736 cylinders = aic_sector_div(capacity, heads, sectors);
737
738 if (aic79xx_extended != 0)
739 extended = 1;
740 else
741 extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0;
742 if (extended && cylinders >= 1024) {
743 heads = 255;
744 sectors = 63;
745 cylinders = aic_sector_div(capacity, heads, sectors);
746 }
747 geom[0] = heads;
748 geom[1] = sectors;
749 geom[2] = cylinders;
750 return (0);
751}
752#endif
753
754/*
755 * Abort the current SCSI command(s).
756 */
757static int
73a25462
HR		 758ahd_linux_abort(struct scsi_cmnd *cmd)
759{
760 int error;
6902f416
HR		 761
762 error = ahd_linux_queue_abort_cmd(cmd);
73a25462 763
73a25462
HR		 764 return error;
765}
766
767/*
768 * Attempt to send a target reset message to the device that timed out.
769 */
770static int
771ahd_linux_dev_reset(struct scsi_cmnd *cmd)
772{
6902f416
HR		 773 struct ahd_softc *ahd;
774 struct ahd_linux_device *dev;
775 struct scb *reset_scb;
776 u_int cdb_byte;
777 int retval = SUCCESS;
6902f416
HR		 778 struct ahd_initiator_tinfo *tinfo;
779 struct ahd_tmode_tstate *tstate;
780 unsigned long flags;
6e9a4738 781 DECLARE_COMPLETION_ONSTACK(done);
73a25462 782
6902f416 783 reset_scb = NULL;
532d56c6 784
6902f416
HR		 785 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
786
787 scmd_printk(KERN_INFO, cmd,
788 "Attempting to queue a TARGET RESET message:");
789
48813cf9 790 printk("CDB:");
6902f416 791 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
48813cf9
PE		 792 printk(" 0x%x", cmd->cmnd[cdb_byte]);
793 printk("\n");
6902f416
HR		 794
795 /*
796 * Determine if we currently own this command.
797 */
798 dev = scsi_transport_device_data(cmd->device);
799
800 if (dev == NULL) {
801 /*
802 * No target device for this command exists,
803 * so we must not still own the command.
804 */
805 scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
806 return SUCCESS;
807 }
808
809 /*
810 * Generate us a new SCB
811 */
812 reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX);
813 if (!reset_scb) {
814 scmd_printk(KERN_INFO, cmd, "No SCB available\n");
815 return FAILED;
816 }
817
818 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
819 cmd->device->id, &tstate);
820 reset_scb->io_ctx = cmd;
821 reset_scb->platform_data->dev = dev;
822 reset_scb->sg_count = 0;
823 ahd_set_residual(reset_scb, 0);
824 ahd_set_sense_residual(reset_scb, 0);
825 reset_scb->platform_data->xfer_len = 0;
826 reset_scb->hscb->control = 0;
827 reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd);
828 reset_scb->hscb->lun = cmd->device->lun;
829 reset_scb->hscb->cdb_len = 0;
830 reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET;
831 reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE;
832 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
833 reset_scb->flags |= SCB_PACKETIZED;
834 } else {
835 reset_scb->hscb->control |= MK_MESSAGE;
836 }
837 dev->openings--;
838 dev->active++;
839 dev->commands_issued++;
840
841 ahd_lock(ahd, &flags);
842
843 LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links);
844 ahd_queue_scb(ahd, reset_scb);
845
846 ahd->platform_data->eh_done = &done;
847 ahd_unlock(ahd, &flags);
848
48813cf9 849 printk("%s: Device reset code sleeping\n", ahd_name(ahd));
6902f416
HR		 850 if (!wait_for_completion_timeout(&done, 5 * HZ)) {
851 ahd_lock(ahd, &flags);
852 ahd->platform_data->eh_done = NULL;
853 ahd_unlock(ahd, &flags);
48813cf9 854 printk("%s: Device reset timer expired (active %d)\n",
6902f416
HR		 855 ahd_name(ahd), dev->active);
856 retval = FAILED;
857 }
48813cf9 858 printk("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval);
6902f416
HR		 859
860 return (retval);
73a25462
HR		 861}
862
863/*
864 * Reset the SCSI bus.
865 */
866static int
867ahd_linux_bus_reset(struct scsi_cmnd *cmd)
1da177e4
LT		 868{
869 struct ahd_softc *ahd;
73a25462 870 int found;
f41b5cec 871 unsigned long flags;
1da177e4 872
1da177e4 873 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
73a25462
HR		 874#ifdef AHD_DEBUG
875 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
48813cf9 876 printk("%s: Bus reset called for cmd %p\n",
73a25462
HR		 877 ahd_name(ahd), cmd);
878#endif
f41b5cec
HR		 879 ahd_lock(ahd, &flags);
880
422c0d61 881 found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A',
73a25462 882 /*initiate reset*/TRUE);
f41b5cec 883 ahd_unlock(ahd, &flags);
1da177e4 884
73a25462 885 if (bootverbose)
48813cf9 886 printk("%s: SCSI bus reset delivered. "
73a25462 887 "%d SCBs aborted.\n", ahd_name(ahd), found);
1da177e4 888
73a25462
HR		 889 return (SUCCESS);
890}
1da177e4 891
73a25462
HR		 892struct scsi_host_template aic79xx_driver_template = {
893 .module = THIS_MODULE,
894 .name = "aic79xx",
85a46523 895 .proc_name = "aic79xx",
f6f83a6c
AV		 896 .show_info = ahd_linux_show_info,
897 .write_info = ahd_proc_write_seeprom,
73a25462
HR		 898 .info = ahd_linux_info,
899 .queuecommand = ahd_linux_queue,
900 .eh_abort_handler = ahd_linux_abort,
901 .eh_device_reset_handler = ahd_linux_dev_reset,
902 .eh_bus_reset_handler = ahd_linux_bus_reset,
903#if defined(__i386__)
904 .bios_param = ahd_linux_biosparam,
905#endif
906 .can_queue = AHD_MAX_QUEUE,
907 .this_id = -1,
80f1443c 908 .max_sectors = 8192,
73a25462 909 .cmd_per_lun = 2,
73a25462
HR		 910 .slave_alloc = ahd_linux_slave_alloc,
911 .slave_configure = ahd_linux_slave_configure,
73a25462
HR		 912 .target_alloc = ahd_linux_target_alloc,
913 .target_destroy = ahd_linux_target_destroy,
914};
1da177e4 915
73a25462
HR		 916/******************************** Bus DMA *************************************/
917int
918ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent,
919 bus_size_t alignment, bus_size_t boundary,
920 dma_addr_t lowaddr, dma_addr_t highaddr,
921 bus_dma_filter_t *filter, void *filterarg,
922 bus_size_t maxsize, int nsegments,
923 bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
924{
925 bus_dma_tag_t dmat;
926
48813cf9 927 dmat = kmalloc(sizeof(*dmat), GFP_ATOMIC);
73a25462
HR		 928 if (dmat == NULL)
929 return (ENOMEM);
1da177e4 930
1da177e4 931 /*
73a25462
HR		 932 * Linux is very simplistic about DMA memory. For now don't
933 * maintain all specification information. Once Linux supplies
934 * better facilities for doing these operations, or the
935 * needs of this particular driver change, we might need to do
936 * more here.
1da177e4 937 */
73a25462
HR		 938 dmat->alignment = alignment;
939 dmat->boundary = boundary;
940 dmat->maxsize = maxsize;
941 *ret_tag = dmat;
942 return (0);
943}
1da177e4 944
73a25462
HR		 945void
946ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat)
947{
48813cf9 948 kfree(dmat);
73a25462 949}
1da177e4 950
73a25462
HR		 951int
952ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr,
953 int flags, bus_dmamap_t *mapp)
954{
daf4b00b
SU		 955 *vaddr = dma_alloc_coherent(&ahd->dev_softc->dev, dmat->maxsize, mapp,
956 GFP_ATOMIC);
73a25462
HR		 957 if (*vaddr == NULL)
958 return (ENOMEM);
959 return(0);
960}
1da177e4 961
73a25462
HR		 962void
963ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat,
964 void* vaddr, bus_dmamap_t map)
965{
daf4b00b 966 dma_free_coherent(&ahd->dev_softc->dev, dmat->maxsize, vaddr, map);
73a25462
HR		 967}
968
969int
970ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map,
971 void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb,
972 void *cb_arg, int flags)
973{
1da177e4 974 /*
73a25462
HR		 975 * Assume for now that this will only be used during
976 * initialization and not for per-transaction buffer mapping.
1da177e4 977 */
73a25462 978 bus_dma_segment_t stack_sg;
1da177e4 979
73a25462
HR		 980 stack_sg.ds_addr = map;
981 stack_sg.ds_len = dmat->maxsize;
982 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
983 return (0);
984}
1da177e4 985
73a25462
HR		 986void
987ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
988{
989}
1da177e4 990
73a25462
HR		 991int
992ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
993{
994 /* Nothing to do */
995 return (0);
996}
1da177e4 997
73a25462 998/********************* Platform Dependent Functions ***************************/
73a25462
HR		 999static void
1000ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value)
1001{
1da177e4 1002
73a25462 1003 if ((instance >= 0)
6391a113 1004 && (instance < ARRAY_SIZE(aic79xx_iocell_info))) {
73a25462
HR		 1005 uint8_t *iocell_info;
1006
1007 iocell_info = (uint8_t*)&aic79xx_iocell_info[instance];
1008 iocell_info[index] = value & 0xFFFF;
1009 if (bootverbose)
48813cf9 1010 printk("iocell[%d:%ld] = %d\n", instance, index, value);
1da177e4 1011 }
73a25462 1012}
1da177e4 1013
73a25462
HR		 1014static void
1015ahd_linux_setup_tag_info_global(char *p)
1016{
1017 int tags, i, j;
1da177e4 1018
73a25462 1019 tags = simple_strtoul(p + 1, NULL, 0) & 0xff;
48813cf9 1020 printk("Setting Global Tags= %d\n", tags);
73a25462 1021
6391a113 1022 for (i = 0; i < ARRAY_SIZE(aic79xx_tag_info); i++) {
73a25462
HR		 1023 for (j = 0; j < AHD_NUM_TARGETS; j++) {
1024 aic79xx_tag_info[i].tag_commands[j] = tags;
1da177e4 1025 }
1da177e4 1026 }
1da177e4
LT		 1027}
1028
1da177e4 1029static void
73a25462 1030ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
1da177e4 1031{
1da177e4 1032
73a25462 1033 if ((instance >= 0) && (targ >= 0)
6391a113 1034 && (instance < ARRAY_SIZE(aic79xx_tag_info))
73a25462
HR		 1035 && (targ < AHD_NUM_TARGETS)) {
1036 aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF;
1037 if (bootverbose)
48813cf9 1038 printk("tag_info[%d:%d] = %d\n", instance, targ, value);
1da177e4 1039 }
1da177e4
LT		 1040}
1041
1ff92730
CH		 1042static char *
1043ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth,
1044 void (*callback)(u_long, int, int, int32_t),
1045 u_long callback_arg)
1046{
1047 char *tok_end;
1048 char *tok_end2;
1049 int i;
1050 int instance;
1051 int targ;
1052 int done;
1053 char tok_list[] = {'.', ',', '{', '}', '\0'};
1054
1055 /* All options use a ':' name/arg separator */
1056 if (*opt_arg != ':')
1057 return (opt_arg);
1058 opt_arg++;
1059 instance = -1;
1060 targ = -1;
1061 done = FALSE;
1062 /*
1063 * Restore separator that may be in
1064 * the middle of our option argument.
1065 */
1066 tok_end = strchr(opt_arg, '\0');
1067 if (tok_end < end)
1068 *tok_end = ',';
1069 while (!done) {
1070 switch (*opt_arg) {
1071 case '{':
1072 if (instance == -1) {
1073 instance = 0;
1074 } else {
1075 if (depth > 1) {
1076 if (targ == -1)
1077 targ = 0;
1078 } else {
48813cf9 1079 printk("Malformed Option %s\n",
1ff92730
CH		 1080 opt_name);
1081 done = TRUE;
1082 }
1083 }
1084 opt_arg++;
1085 break;
1086 case '}':
1087 if (targ != -1)
1088 targ = -1;
1089 else if (instance != -1)
1090 instance = -1;
1091 opt_arg++;
1092 break;
1093 case ',':
1094 case '.':
1095 if (instance == -1)
1096 done = TRUE;
1097 else if (targ >= 0)
1098 targ++;
1099 else if (instance >= 0)
1100 instance++;
1101 opt_arg++;
1102 break;
1103 case '\0':
1104 done = TRUE;
1105 break;
1106 default:
1107 tok_end = end;
1108 for (i = 0; tok_list[i]; i++) {
1109 tok_end2 = strchr(opt_arg, tok_list[i]);
1110 if ((tok_end2) && (tok_end2 < tok_end))
1111 tok_end = tok_end2;
1112 }
1113 callback(callback_arg, instance, targ,
1114 simple_strtol(opt_arg, NULL, 0));
1115 opt_arg = tok_end;
1116 break;
1117 }
1118 }
1119 return (opt_arg);
1120}
1121
1da177e4 1122/*
73a25462
HR		 1123 * Handle Linux boot parameters. This routine allows for assigning a value
1124 * to a parameter with a ':' between the parameter and the value.
1125 * ie. aic79xx=stpwlev:1,extended
1da177e4
LT		 1126 */
1127static int
73a25462 1128aic79xx_setup(char *s)
1da177e4 1129{
73a25462
HR		 1130 int i, n;
1131 char *p;
1132 char *end;
1da177e4 1133
980b306a 1134 static const struct {
73a25462
HR		 1135 const char *name;
1136 uint32_t *flag;
1137 } options[] = {
1138 { "extended", &aic79xx_extended },
1139 { "no_reset", &aic79xx_no_reset },
1140 { "verbose", &aic79xx_verbose },
1141 { "allow_memio", &aic79xx_allow_memio},
1da177e4 1142#ifdef AHD_DEBUG
73a25462 1143 { "debug", &ahd_debug },
1da177e4 1144#endif
73a25462
HR		 1145 { "periodic_otag", &aic79xx_periodic_otag },
1146 { "pci_parity", &aic79xx_pci_parity },
1147 { "seltime", &aic79xx_seltime },
1148 { "tag_info", NULL },
1149 { "global_tag_depth", NULL},
1150 { "slewrate", NULL },
1151 { "precomp", NULL },
1152 { "amplitude", NULL },
3fb08612 1153 { "slowcrc", &aic79xx_slowcrc },
73a25462 1154 };
1da177e4 1155
73a25462 1156 end = strchr(s, '\0');
1da177e4 1157
73a25462 1158 /*
6391a113 1159 * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE
73a25462 1160 * will never be 0 in this case.
6391a113
TK		 1161 */
1162 n = 0;
73a25462
HR		 1163
1164 while ((p = strsep(&s, ",.")) != NULL) {
1165 if (*p == '\0')
1166 continue;
6391a113 1167 for (i = 0; i < ARRAY_SIZE(options); i++) {
73a25462
HR		 1168
1169 n = strlen(options[i].name);
1170 if (strncmp(options[i].name, p, n) == 0)
1171 break;
1172 }
6391a113 1173 if (i == ARRAY_SIZE(options))
73a25462
HR		 1174 continue;
1175
1176 if (strncmp(p, "global_tag_depth", n) == 0) {
1177 ahd_linux_setup_tag_info_global(p + n);
1178 } else if (strncmp(p, "tag_info", n) == 0) {
1ff92730 1179 s = ahd_parse_brace_option("tag_info", p + n, end,
73a25462
HR		 1180 2, ahd_linux_setup_tag_info, 0);
1181 } else if (strncmp(p, "slewrate", n) == 0) {
1ff92730 1182 s = ahd_parse_brace_option("slewrate",
73a25462
HR		 1183 p + n, end, 1, ahd_linux_setup_iocell_info,
1184 AIC79XX_SLEWRATE_INDEX);
1185 } else if (strncmp(p, "precomp", n) == 0) {
1ff92730 1186 s = ahd_parse_brace_option("precomp",
73a25462
HR		 1187 p + n, end, 1, ahd_linux_setup_iocell_info,
1188 AIC79XX_PRECOMP_INDEX);
1189 } else if (strncmp(p, "amplitude", n) == 0) {
1ff92730 1190 s = ahd_parse_brace_option("amplitude",
73a25462
HR		 1191 p + n, end, 1, ahd_linux_setup_iocell_info,
1192 AIC79XX_AMPLITUDE_INDEX);
1193 } else if (p[n] == ':') {
1194 *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
1195 } else if (!strncmp(p, "verbose", n)) {
1196 *(options[i].flag) = 1;
1197 } else {
1198 *(options[i].flag) ^= 0xFFFFFFFF;
1199 }
1200 }
1201 return 1;
1da177e4
LT		 1202}
1203
73a25462
HR		 1204__setup("aic79xx=", aic79xx_setup);
1205
1206uint32_t aic79xx_verbose;
1da177e4 1207
1da177e4 1208int
73a25462 1209ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template)
1da177e4 1210{
73a25462
HR		 1211 char buf[80];
1212 struct Scsi_Host *host;
1213 char *new_name;
1214 u_long s;
e7a1ca1d 1215 int retval;
1da177e4 1216
73a25462
HR		 1217 template->name = ahd->description;
1218 host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
1219 if (host == NULL)
1da177e4
LT		 1220 return (ENOMEM);
1221
73a25462 1222 *((struct ahd_softc **)host->hostdata) = ahd;
73a25462
HR		 1223 ahd->platform_data->host = host;
1224 host->can_queue = AHD_MAX_QUEUE;
1225 host->cmd_per_lun = 2;
1226 host->sg_tablesize = AHD_NSEG;
1227 host->this_id = ahd->our_id;
1228 host->irq = ahd->platform_data->irq;
1229 host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8;
1230 host->max_lun = AHD_NUM_LUNS;
1231 host->max_channel = 0;
1232 host->sg_tablesize = AHD_NSEG;
eb221849 1233 ahd_lock(ahd, &s);
85a46523 1234 ahd_set_unit(ahd, ahd_linux_unit++);
eb221849 1235 ahd_unlock(ahd, &s);
73a25462 1236 sprintf(buf, "scsi%d", host->host_no);
48813cf9 1237 new_name = kmalloc(strlen(buf) + 1, GFP_ATOMIC);
73a25462
HR		 1238 if (new_name != NULL) {
1239 strcpy(new_name, buf);
1240 ahd_set_name(ahd, new_name);
1241 }
1242 host->unique_id = ahd->unit;
1243 ahd_linux_initialize_scsi_bus(ahd);
1244 ahd_intr_enable(ahd, TRUE);
73a25462
HR		 1245
1246 host->transportt = ahd_linux_transport_template;
1247
e7a1ca1d
JJ		 1248 retval = scsi_add_host(host, &ahd->dev_softc->dev);
1249 if (retval) {
1250 printk(KERN_WARNING "aic79xx: scsi_add_host failed\n");
1251 scsi_host_put(host);
1252 return retval;
1253 }
1254
73a25462 1255 scsi_scan_host(host);
e7a1ca1d 1256 return 0;
1da177e4
LT		 1257}
1258
73a25462
HR		 1259/*
1260 * Place the SCSI bus into a known state by either resetting it,
1261 * or forcing transfer negotiations on the next command to any
1262 * target.
1263 */
1264static void
1265ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
1da177e4 1266{
73a25462
HR		 1267 u_int target_id;
1268 u_int numtarg;
eb221849 1269 unsigned long s;
1da177e4 1270
73a25462
HR		 1271 target_id = 0;
1272 numtarg = 0;
1273
1274 if (aic79xx_no_reset != 0)
1275 ahd->flags &= ~AHD_RESET_BUS_A;
1276
1277 if ((ahd->flags & AHD_RESET_BUS_A) != 0)
1278 ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE);
1279 else
1280 numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
1da177e4 1281
eb221849
HR		 1282 ahd_lock(ahd, &s);
1283
1da177e4 1284 /*
73a25462
HR		 1285 * Force negotiation to async for all targets that
1286 * will not see an initial bus reset.
1da177e4 1287 */
73a25462
HR		 1288 for (; target_id < numtarg; target_id++) {
1289 struct ahd_devinfo devinfo;
1290 struct ahd_initiator_tinfo *tinfo;
1291 struct ahd_tmode_tstate *tstate;
1292
1293 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1294 target_id, &tstate);
1295 ahd_compile_devinfo(&devinfo, ahd->our_id, target_id,
1296 CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR);
1297 ahd_update_neg_request(ahd, &devinfo, tstate,
1298 tinfo, AHD_NEG_ALWAYS);
1299 }
eb221849 1300 ahd_unlock(ahd, &s);
73a25462
HR		 1301 /* Give the bus some time to recover */
1302 if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
1303 ahd_freeze_simq(ahd);
eb221849
HR		 1304 msleep(AIC79XX_RESET_DELAY);
1305 ahd_release_simq(ahd);
73a25462 1306 }
1da177e4
LT		 1307}
1308
1309int
73a25462 1310ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1da177e4 1311{
73a25462 1312 ahd->platform_data =
114fc1d9 1313 kzalloc(sizeof(struct ahd_platform_data), GFP_ATOMIC);
73a25462
HR		 1314 if (ahd->platform_data == NULL)
1315 return (ENOMEM);
73a25462
HR		 1316 ahd->platform_data->irq = AHD_LINUX_NOIRQ;
1317 ahd_lockinit(ahd);
73a25462 1318 ahd->seltime = (aic79xx_seltime & 0x3) << 4;
1da177e4
LT		 1319 return (0);
1320}
1321
73a25462
HR		 1322void
1323ahd_platform_free(struct ahd_softc *ahd)
1da177e4 1324{
73a25462 1325 struct scsi_target *starget;
f89d0a4e 1326 int i;
1da177e4 1327
73a25462 1328 if (ahd->platform_data != NULL) {
73a25462
HR		 1329 /* destroy all of the device and target objects */
1330 for (i = 0; i < AHD_NUM_TARGETS; i++) {
1331 starget = ahd->platform_data->starget[i];
1332 if (starget != NULL) {
73a25462
HR		 1333 ahd->platform_data->starget[i] = NULL;
1334 }
1335 }
1da177e4 1336
73a25462
HR		 1337 if (ahd->platform_data->irq != AHD_LINUX_NOIRQ)
1338 free_irq(ahd->platform_data->irq, ahd);
1339 if (ahd->tags[0] == BUS_SPACE_PIO
1340 && ahd->bshs[0].ioport != 0)
1341 release_region(ahd->bshs[0].ioport, 256);
1342 if (ahd->tags[1] == BUS_SPACE_PIO
1343 && ahd->bshs[1].ioport != 0)
1344 release_region(ahd->bshs[1].ioport, 256);
1345 if (ahd->tags[0] == BUS_SPACE_MEMIO
1346 && ahd->bshs[0].maddr != NULL) {
1347 iounmap(ahd->bshs[0].maddr);
1348 release_mem_region(ahd->platform_data->mem_busaddr,
1349 0x1000);
1350 }
97af50f6
JB		 1351 if (ahd->platform_data->host)
1352 scsi_host_put(ahd->platform_data->host);
1353
48813cf9 1354 kfree(ahd->platform_data);
73a25462 1355 }
1da177e4
LT		 1356}
1357
73a25462
HR		 1358void
1359ahd_platform_init(struct ahd_softc *ahd)
1da177e4 1360{
73a25462
HR		 1361 /*
1362 * Lookup and commit any modified IO Cell options.
1363 */
6391a113 1364 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
980b306a 1365 const struct ahd_linux_iocell_opts *iocell_opts;
1da177e4 1366
73a25462
HR		 1367 iocell_opts = &aic79xx_iocell_info[ahd->unit];
1368 if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP)
1369 AHD_SET_PRECOMP(ahd, iocell_opts->precomp);
1370 if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE)
1371 AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate);
1372 if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE)
1373 AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude);
1da177e4 1374 }
1da177e4 1375
1da177e4
LT		 1376}
1377
73a25462
HR		 1378void
1379ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
1da177e4 1380{
73a25462
HR		 1381 ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
1382 SCB_GET_CHANNEL(ahd, scb),
1383 SCB_GET_LUN(scb), SCB_LIST_NULL,
1384 ROLE_UNKNOWN, CAM_REQUEUE_REQ);
1da177e4
LT		 1385}
1386
73a25462 1387void
f89d0a4e
HR		 1388ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
1389 struct ahd_devinfo *devinfo, ahd_queue_alg alg)
1da177e4 1390{
73a25462 1391 struct ahd_linux_device *dev;
73a25462
HR		 1392 int was_queuing;
1393 int now_queuing;
1da177e4 1394
73a25462
HR		 1395 if (sdev == NULL)
1396 return;
1da177e4 1397
73a25462 1398 dev = scsi_transport_device_data(sdev);
1da177e4 1399
73a25462
HR		 1400 if (dev == NULL)
1401 return;
1402 was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED);
1403 switch (alg) {
1404 default:
1405 case AHD_QUEUE_NONE:
1406 now_queuing = 0;
1407 break;
1408 case AHD_QUEUE_BASIC:
1409 now_queuing = AHD_DEV_Q_BASIC;
1410 break;
1411 case AHD_QUEUE_TAGGED:
1412 now_queuing = AHD_DEV_Q_TAGGED;
1413 break;
1414 }
1415 if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0
1416 && (was_queuing != now_queuing)
1417 && (dev->active != 0)) {
1418 dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY;
1419 dev->qfrozen++;
1da177e4 1420 }
1da177e4 1421
73a25462
HR		 1422 dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG);
1423 if (now_queuing) {
1424 u_int usertags;
1da177e4 1425
73a25462
HR		 1426 usertags = ahd_linux_user_tagdepth(ahd, devinfo);
1427 if (!was_queuing) {
1428 /*
25985edc 1429 * Start out aggressively and allow our
73a25462
HR		 1430 * dynamic queue depth algorithm to take
1431 * care of the rest.
1432 */
1433 dev->maxtags = usertags;
1434 dev->openings = dev->maxtags - dev->active;
1da177e4 1435 }
73a25462
HR		 1436 if (dev->maxtags == 0) {
1437 /*
1438 * Queueing is disabled by the user.
1439 */
1440 dev->openings = 1;
1441 } else if (alg == AHD_QUEUE_TAGGED) {
1442 dev->flags |= AHD_DEV_Q_TAGGED;
1443 if (aic79xx_periodic_otag != 0)
1444 dev->flags |= AHD_DEV_PERIODIC_OTAG;
1445 } else
1446 dev->flags |= AHD_DEV_Q_BASIC;
1447 } else {
1448 /* We can only have one opening. */
1449 dev->maxtags = 0;
1450 dev->openings = 1 - dev->active;
1da177e4 1451 }
1da177e4 1452
73a25462
HR		 1453 switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
1454 case AHD_DEV_Q_BASIC:
73a25462 1455 case AHD_DEV_Q_TAGGED:
db5ed4df 1456 scsi_change_queue_depth(sdev,
2ecb204d 1457 dev->openings + dev->active);
73a25462
HR		 1458 break;
1459 default:
1da177e4 1460 /*
73a25462
HR		 1461 * We allow the OS to queue 2 untagged transactions to
1462 * us at any time even though we can only execute them
1463 * serially on the controller/device. This should
1464 * remove some latency.
1da177e4 1465 */
db5ed4df 1466 scsi_change_queue_depth(sdev, 1);
73a25462 1467 break;
1da177e4 1468 }
1da177e4
LT		 1469}
1470
73a25462
HR		 1471int
1472ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel,
1473 int lun, u_int tag, role_t role, uint32_t status)
1da177e4 1474{
73a25462 1475 return 0;
1da177e4
LT		 1476}
1477
73a25462
HR		 1478static u_int
1479ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
1da177e4 1480{
73a25462
HR		 1481 static int warned_user;
1482 u_int tags;
1da177e4 1483
73a25462
HR		 1484 tags = 0;
1485 if ((ahd->user_discenable & devinfo->target_mask) != 0) {
6391a113 1486 if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) {
73a25462
HR		 1487
1488 if (warned_user == 0) {
48813cf9 1489 printk(KERN_WARNING
73a25462
HR		 1490"aic79xx: WARNING: Insufficient tag_info instances\n"
1491"aic79xx: for installed controllers. Using defaults\n"
1492"aic79xx: Please update the aic79xx_tag_info array in\n"
1493"aic79xx: the aic79xx_osm.c source file.\n");
1494 warned_user++;
1495 }
1496 tags = AHD_MAX_QUEUE;
1497 } else {
1498 adapter_tag_info_t *tag_info;
1499
1500 tag_info = &aic79xx_tag_info[ahd->unit];
1501 tags = tag_info->tag_commands[devinfo->target_offset];
1502 if (tags > AHD_MAX_QUEUE)
1503 tags = AHD_MAX_QUEUE;
1da177e4
LT		 1504 }
1505 }
73a25462 1506 return (tags);
1da177e4
LT		 1507}
1508
1509/*
73a25462 1510 * Determines the queue depth for a given device.
1da177e4
LT		 1511 */
1512static void
73a25462 1513ahd_linux_device_queue_depth(struct scsi_device *sdev)
1da177e4 1514{
73a25462
HR		 1515 struct ahd_devinfo devinfo;
1516 u_int tags;
1517 struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata);
1da177e4 1518
73a25462
HR		 1519 ahd_compile_devinfo(&devinfo,
1520 ahd->our_id,
1521 sdev->sdev_target->id, sdev->lun,
1522 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1523 ROLE_INITIATOR);
1524 tags = ahd_linux_user_tagdepth(ahd, &devinfo);
1525 if (tags != 0 && sdev->tagged_supported != 0) {
1da177e4 1526
f89d0a4e
HR		 1527 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_TAGGED);
1528 ahd_send_async(ahd, devinfo.channel, devinfo.target,
1529 devinfo.lun, AC_TRANSFER_NEG);
73a25462 1530 ahd_print_devinfo(ahd, &devinfo);
48813cf9 1531 printk("Tagged Queuing enabled. Depth %d\n", tags);
73a25462 1532 } else {
f89d0a4e
HR		 1533 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_NONE);
1534 ahd_send_async(ahd, devinfo.channel, devinfo.target,
1535 devinfo.lun, AC_TRANSFER_NEG);
73a25462
HR		 1536 }
1537}
1da177e4 1538
73a25462
HR		 1539static int
1540ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
1541 struct scsi_cmnd *cmd)
1542{
1543 struct scb *scb;
1544 struct hardware_scb *hscb;
1545 struct ahd_initiator_tinfo *tinfo;
1546 struct ahd_tmode_tstate *tstate;
1547 u_int col_idx;
1548 uint16_t mask;
7b22da38 1549 unsigned long flags;
4c688fc7 1550 int nseg;
7b22da38 1551
2505873a
FT		 1552 nseg = scsi_dma_map(cmd);
1553 if (nseg < 0)
1554 return SCSI_MLQUEUE_HOST_BUSY;
1555
7b22da38 1556 ahd_lock(ahd, &flags);
1da177e4
LT		 1557
1558 /*
73a25462 1559 * Get an scb to use.
1da177e4 1560 */
73a25462
HR		 1561 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1562 cmd->device->id, &tstate);
1563 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
1564 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1565 col_idx = AHD_NEVER_COL_IDX;
1566 } else {
1567 col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
1568 cmd->device->lun);
1569 }
1570 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
1571 ahd->flags |= AHD_RESOURCE_SHORTAGE;
7b22da38 1572 ahd_unlock(ahd, &flags);
2505873a 1573 scsi_dma_unmap(cmd);
73a25462 1574 return SCSI_MLQUEUE_HOST_BUSY;
1da177e4 1575 }
1da177e4 1576
73a25462
HR		 1577 scb->io_ctx = cmd;
1578 scb->platform_data->dev = dev;
1579 hscb = scb->hscb;
1580 cmd->host_scribble = (char *)scb;
1da177e4 1581
73a25462
HR		 1582 /*
1583 * Fill out basics of the HSCB.
1584 */
1585 hscb->control = 0;
1586 hscb->scsiid = BUILD_SCSIID(ahd, cmd);
1587 hscb->lun = cmd->device->lun;
1588 scb->hscb->task_management = 0;
1589 mask = SCB_GET_TARGET_MASK(ahd, scb);
1da177e4 1590
73a25462
HR		 1591 if ((ahd->user_discenable & mask) != 0)
1592 hscb->control |= DISCENB;
1da177e4 1593
73a25462
HR		 1594 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
1595 scb->flags |= SCB_PACKETIZED;
1da177e4 1596
73a25462
HR		 1597 if ((tstate->auto_negotiate & mask) != 0) {
1598 scb->flags |= SCB_AUTO_NEGOTIATE;
1599 scb->hscb->control |= MK_MESSAGE;
1600 }
1601
1602 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
73a25462
HR		 1603 if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
1604 && (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
1605 hscb->control |= MSG_ORDERED_TASK;
1606 dev->commands_since_idle_or_otag = 0;
1607 } else {
1608 hscb->control |= MSG_SIMPLE_TASK;
1da177e4 1609 }
73a25462 1610 }
1da177e4 1611
73a25462
HR		 1612 hscb->cdb_len = cmd->cmd_len;
1613 memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
1614
1615 scb->platform_data->xfer_len = 0;
1616 ahd_set_residual(scb, 0);
1617 ahd_set_sense_residual(scb, 0);
1618 scb->sg_count = 0;
4c688fc7 1619
4c688fc7
FT		 1620 if (nseg > 0) {
1621 void *sg = scb->sg_list;
1622 struct scatterlist *cur_seg;
1623 int i;
1624
73a25462 1625 scb->platform_data->xfer_len = 0;
4c688fc7
FT		 1626
1627 scsi_for_each_sg(cmd, cur_seg, nseg, i) {
73a25462
HR		 1628 dma_addr_t addr;
1629 bus_size_t len;
1630
1631 addr = sg_dma_address(cur_seg);
1632 len = sg_dma_len(cur_seg);
1633 scb->platform_data->xfer_len += len;
1634 sg = ahd_sg_setup(ahd, scb, sg, addr, len,
4c688fc7 1635 i == (nseg - 1));
1da177e4 1636 }
1da177e4 1637 }
73a25462
HR		 1638
1639 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1640 dev->openings--;
1641 dev->active++;
1642 dev->commands_issued++;
1643
1644 if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
1645 dev->commands_since_idle_or_otag++;
1646 scb->flags |= SCB_ACTIVE;
1647 ahd_queue_scb(ahd, scb);
1648
7b22da38
HR		 1649 ahd_unlock(ahd, &flags);
1650
73a25462 1651 return 0;
1da177e4
LT		 1652}
1653
73a25462
HR		 1654/*
1655 * SCSI controller interrupt handler.
1656 */
1657irqreturn_t
7d12e780 1658ahd_linux_isr(int irq, void *dev_id)
1da177e4 1659{
73a25462
HR		 1660 struct ahd_softc *ahd;
1661 u_long flags;
1662 int ours;
1da177e4 1663
73a25462
HR		 1664 ahd = (struct ahd_softc *) dev_id;
1665 ahd_lock(ahd, &flags);
1666 ours = ahd_intr(ahd);
1667 ahd_unlock(ahd, &flags);
1668 return IRQ_RETVAL(ours);
1da177e4
LT		 1669}
1670
1da177e4 1671void
73a25462 1672ahd_send_async(struct ahd_softc *ahd, char channel,
f89d0a4e 1673 u_int target, u_int lun, ac_code code)
1da177e4 1674{
73a25462
HR		 1675 switch (code) {
1676 case AC_TRANSFER_NEG:
1677 {
73a25462 1678 struct scsi_target *starget;
73a25462
HR		 1679 struct ahd_initiator_tinfo *tinfo;
1680 struct ahd_tmode_tstate *tstate;
1681 unsigned int target_ppr_options;
1da177e4 1682
73a25462
HR		 1683 BUG_ON(target == CAM_TARGET_WILDCARD);
1684
73a25462
HR		 1685 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
1686 target, &tstate);
1687
1688 /*
1689 * Don't bother reporting results while
1690 * negotiations are still pending.
1691 */
1692 if (tinfo->curr.period != tinfo->goal.period
1693 || tinfo->curr.width != tinfo->goal.width
1694 || tinfo->curr.offset != tinfo->goal.offset
1695 || tinfo->curr.ppr_options != tinfo->goal.ppr_options)
1696 if (bootverbose == 0)
1697 break;
1698
1699 /*
1700 * Don't bother reporting results that
1701 * are identical to those last reported.
1702 */
1703 starget = ahd->platform_data->starget[target];
fc789a93 1704 if (starget == NULL)
73a25462
HR		 1705 break;
1706
1707 target_ppr_options =
1708 (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0)
1709 + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0)
3f40d7d6
JB		 1710 + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0)
1711 + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0)
1712 + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0)
1713 + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0)
88ff29a4
JB		 1714 + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0)
1715 + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0);
73a25462
HR		 1716
1717 if (tinfo->curr.period == spi_period(starget)
1718 && tinfo->curr.width == spi_width(starget)
1719 && tinfo->curr.offset == spi_offset(starget)
1720 && tinfo->curr.ppr_options == target_ppr_options)
1721 if (bootverbose == 0)
1722 break;
1723
1724 spi_period(starget) = tinfo->curr.period;
1725 spi_width(starget) = tinfo->curr.width;
1726 spi_offset(starget) = tinfo->curr.offset;
a4b53a11
HR		 1727 spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
1728 spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
1729 spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
3f40d7d6
JB		 1730 spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0;
1731 spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0;
1732 spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0;
1733 spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0;
88ff29a4 1734 spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0;
73a25462 1735 spi_display_xfer_agreement(starget);
1da177e4 1736 break;
73a25462
HR		 1737 }
1738 case AC_SENT_BDR:
1739 {
1740 WARN_ON(lun != CAM_LUN_WILDCARD);
1741 scsi_report_device_reset(ahd->platform_data->host,
1742 channel - 'A', target);
1da177e4
LT		 1743 break;
1744 }
73a25462
HR		 1745 case AC_BUS_RESET:
1746 if (ahd->platform_data->host != NULL) {
1747 scsi_report_bus_reset(ahd->platform_data->host,
1748 channel - 'A');
1da177e4 1749 }
73a25462
HR		 1750 break;
1751 default:
1752 panic("ahd_send_async: Unexpected async event");
1753 }
1da177e4
LT		 1754}
1755
73a25462
HR		 1756/*
1757 * Calls the higher level scsi done function and frees the scb.
1758 */
1759void
1760ahd_done(struct ahd_softc *ahd, struct scb *scb)
1da177e4 1761{
73a25462
HR		 1762 struct scsi_cmnd *cmd;
1763 struct ahd_linux_device *dev;
1da177e4 1764
73a25462 1765 if ((scb->flags & SCB_ACTIVE) == 0) {
48813cf9 1766 printk("SCB %d done'd twice\n", SCB_GET_TAG(scb));
73a25462
HR		 1767 ahd_dump_card_state(ahd);
1768 panic("Stopping for safety");
1da177e4 1769 }
73a25462
HR		 1770 LIST_REMOVE(scb, pending_links);
1771 cmd = scb->io_ctx;
1772 dev = scb->platform_data->dev;
1773 dev->active--;
1774 dev->openings++;
1775 if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) {
1776 cmd->result &= ~(CAM_DEV_QFRZN << 16);
1777 dev->qfrozen--;
1778 }
1779 ahd_linux_unmap_scb(ahd, scb);
1da177e4
LT		 1780
1781 /*
73a25462
HR		 1782 * Guard against stale sense data.
1783 * The Linux mid-layer assumes that sense
1784 * was retrieved anytime the first byte of
1785 * the sense buffer looks "sane".
1da177e4 1786 */
73a25462
HR		 1787 cmd->sense_buffer[0] = 0;
1788 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
42b840bc 1789#ifdef AHD_REPORT_UNDERFLOWS
73a25462 1790 uint32_t amount_xferred;
1da177e4 1791
73a25462
HR		 1792 amount_xferred =
1793 ahd_get_transfer_length(scb) - ahd_get_residual(scb);
42b840bc 1794#endif
73a25462 1795 if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
1da177e4 1796#ifdef AHD_DEBUG
73a25462
HR		 1797 if ((ahd_debug & AHD_SHOW_MISC) != 0) {
1798 ahd_print_path(ahd, scb);
48813cf9 1799 printk("Set CAM_UNCOR_PARITY\n");
73a25462 1800 }
1da177e4 1801#endif
73a25462
HR		 1802 ahd_set_transaction_status(scb, CAM_UNCOR_PARITY);
1803#ifdef AHD_REPORT_UNDERFLOWS
1da177e4 1804 /*
73a25462
HR		 1805 * This code is disabled by default as some
1806 * clients of the SCSI system do not properly
1807 * initialize the underflow parameter. This
1808 * results in spurious termination of commands
1809 * that complete as expected (e.g. underflow is
1810 * allowed as command can return variable amounts
1811 * of data.
1da177e4 1812 */
73a25462
HR		 1813 } else if (amount_xferred < scb->io_ctx->underflow) {
1814 u_int i;
1da177e4 1815
73a25462 1816 ahd_print_path(ahd, scb);
48813cf9 1817 printk("CDB:");
73a25462 1818 for (i = 0; i < scb->io_ctx->cmd_len; i++)
48813cf9
PE		 1819 printk(" 0x%x", scb->io_ctx->cmnd[i]);
1820 printk("\n");
73a25462 1821 ahd_print_path(ahd, scb);
48813cf9 1822 printk("Saw underflow (%ld of %ld bytes). "
73a25462
HR		 1823 "Treated as error\n",
1824 ahd_get_residual(scb),
1825 ahd_get_transfer_length(scb));
1826 ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
1827#endif
1828 } else {
1829 ahd_set_transaction_status(scb, CAM_REQ_CMP);
1da177e4 1830 }
73a25462
HR		 1831 } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
1832 ahd_linux_handle_scsi_status(ahd, cmd->device, scb);
1833 }
1da177e4 1834
73a25462
HR		 1835 if (dev->openings == 1
1836 && ahd_get_transaction_status(scb) == CAM_REQ_CMP
1837 && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL)
1838 dev->tag_success_count++;
1839 /*
1840 * Some devices deal with temporary internal resource
1841 * shortages by returning queue full. When the queue
1842 * full occurrs, we throttle back. Slowly try to get
1843 * back to our previous queue depth.
1844 */
1845 if ((dev->openings + dev->active) < dev->maxtags
1846 && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) {
1847 dev->tag_success_count = 0;
1848 dev->openings++;
1849 }
1da177e4 1850
73a25462
HR		 1851 if (dev->active == 0)
1852 dev->commands_since_idle_or_otag = 0;
1da177e4 1853
73a25462 1854 if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
48813cf9 1855 printk("Recovery SCB completes\n");
73a25462
HR		 1856 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
1857 || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
1858 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
7b22da38
HR		 1859
1860 if (ahd->platform_data->eh_done)
1861 complete(ahd->platform_data->eh_done);
1da177e4 1862 }
73a25462
HR		 1863
1864 ahd_free_scb(ahd, scb);
1865 ahd_linux_queue_cmd_complete(ahd, cmd);
1da177e4
LT		 1866}
1867
1868static void
73a25462
HR		 1869ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
1870 struct scsi_device *sdev, struct scb *scb)
1da177e4 1871{
73a25462
HR		 1872 struct ahd_devinfo devinfo;
1873 struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
1da177e4 1874
73a25462
HR		 1875 ahd_compile_devinfo(&devinfo,
1876 ahd->our_id,
1877 sdev->sdev_target->id, sdev->lun,
1878 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1879 ROLE_INITIATOR);
1880
1881 /*
1882 * We don't currently trust the mid-layer to
1883 * properly deal with queue full or busy. So,
1884 * when one occurs, we tell the mid-layer to
1885 * unconditionally requeue the command to us
1886 * so that we can retry it ourselves. We also
1887 * implement our own throttling mechanism so
1888 * we don't clobber the device with too many
1889 * commands.
1890 */
1891 switch (ahd_get_scsi_status(scb)) {
1892 default:
1893 break;
1894 case SCSI_STATUS_CHECK_COND:
1895 case SCSI_STATUS_CMD_TERMINATED:
1896 {
1897 struct scsi_cmnd *cmd;
1da177e4
LT		 1898
1899 /*
73a25462
HR		 1900 * Copy sense information to the OS's cmd
1901 * structure if it is available.
1da177e4 1902 */
73a25462
HR		 1903 cmd = scb->io_ctx;
1904 if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) {
1905 struct scsi_status_iu_header *siu;
1906 u_int sense_size;
1907 u_int sense_offset;
1da177e4 1908
73a25462 1909 if (scb->flags & SCB_SENSE) {
6d07cb71 1910 sense_size = min(sizeof(struct scsi_sense_data)
73a25462 1911 - ahd_get_sense_residual(scb),
b80ca4f7 1912 (u_long)SCSI_SENSE_BUFFERSIZE);
73a25462
HR		 1913 sense_offset = 0;
1914 } else {
1915 /*
1916 * Copy only the sense data into the provided
1917 * buffer.
1918 */
1919 siu = (struct scsi_status_iu_header *)
1920 scb->sense_data;
6d07cb71
AL		 1921 sense_size = min_t(size_t,
1922 scsi_4btoul(siu->sense_length),
b80ca4f7 1923 SCSI_SENSE_BUFFERSIZE);
73a25462
HR		 1924 sense_offset = SIU_SENSE_OFFSET(siu);
1925 }
1da177e4 1926
b80ca4f7 1927 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
73a25462
HR		 1928 memcpy(cmd->sense_buffer,
1929 ahd_get_sense_buf(ahd, scb)
1930 + sense_offset, sense_size);
1931 cmd->result |= (DRIVER_SENSE << 24);
1da177e4 1932
1da177e4 1933#ifdef AHD_DEBUG
73a25462
HR		 1934 if (ahd_debug & AHD_SHOW_SENSE) {
1935 int i;
1da177e4 1936
48813cf9 1937 printk("Copied %d bytes of sense data at %d:",
73a25462
HR		 1938 sense_size, sense_offset);
1939 for (i = 0; i < sense_size; i++) {
1da177e4 1940 if ((i & 0xF) == 0)
48813cf9
PE		 1941 printk("\n");
1942 printk("0x%x ", cmd->sense_buffer[i]);
1da177e4 1943 }
48813cf9 1944 printk("\n");
1da177e4
LT		 1945 }
1946#endif
1da177e4
LT		 1947 }
1948 break;
73a25462
HR		 1949 }
1950 case SCSI_STATUS_QUEUE_FULL:
1951 /*
1952 * By the time the core driver has returned this
1953 * command, all other commands that were queued
1954 * to us but not the device have been returned.
1955 * This ensures that dev->active is equal to
1956 * the number of commands actually queued to
1957 * the device.
1958 */
1959 dev->tag_success_count = 0;
1960 if (dev->active != 0) {
1da177e4 1961 /*
73a25462
HR		 1962 * Drop our opening count to the number
1963 * of commands currently outstanding.
1da177e4 1964 */
73a25462 1965 dev->openings = 0;
1da177e4 1966#ifdef AHD_DEBUG
73a25462
HR		 1967 if ((ahd_debug & AHD_SHOW_QFULL) != 0) {
1968 ahd_print_path(ahd, scb);
48813cf9 1969 printk("Dropping tag count to %d\n",
73a25462 1970 dev->active);
1da177e4
LT		 1971 }
1972#endif
73a25462 1973 if (dev->active == dev->tags_on_last_queuefull) {
1da177e4 1974
73a25462 1975 dev->last_queuefull_same_count++;
1da177e4 1976 /*
73a25462
HR		 1977 * If we repeatedly see a queue full
1978 * at the same queue depth, this
1979 * device has a fixed number of tag
1980 * slots. Lock in this tag depth
1981 * so we stop seeing queue fulls from
1982 * this device.
1da177e4 1983 */
73a25462
HR		 1984 if (dev->last_queuefull_same_count
1985 == AHD_LOCK_TAGS_COUNT) {
1986 dev->maxtags = dev->active;
1987 ahd_print_path(ahd, scb);
48813cf9 1988 printk("Locking max tag count at %d\n",
73a25462 1989 dev->active);
1da177e4 1990 }
73a25462
HR		 1991 } else {
1992 dev->tags_on_last_queuefull = dev->active;
1993 dev->last_queuefull_same_count = 0;
1da177e4 1994 }
73a25462
HR		 1995 ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
1996 ahd_set_scsi_status(scb, SCSI_STATUS_OK);
f89d0a4e 1997 ahd_platform_set_tags(ahd, sdev, &devinfo,
73a25462
HR		 1998 (dev->flags & AHD_DEV_Q_BASIC)
1999 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
1da177e4
LT		 2000 break;
2001 }
1da177e4 2002 /*
73a25462
HR		 2003 * Drop down to a single opening, and treat this
2004 * as if the target returned BUSY SCSI status.
1da177e4 2005 */
73a25462 2006 dev->openings = 1;
f89d0a4e 2007 ahd_platform_set_tags(ahd, sdev, &devinfo,
73a25462
HR		 2008 (dev->flags & AHD_DEV_Q_BASIC)
2009 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
2010 ahd_set_scsi_status(scb, SCSI_STATUS_BUSY);
2011 }
1da177e4
LT		 2012}
2013
73a25462
HR		 2014static void
2015ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
1da177e4 2016{
6902f416
HR		 2017 int status;
2018 int new_status = DID_OK;
2019 int do_fallback = 0;
2020 int scsi_status;
2021
1da177e4 2022 /*
73a25462
HR		 2023 * Map CAM error codes into Linux Error codes. We
2024 * avoid the conversion so that the DV code has the
2025 * full error information available when making
2026 * state change decisions.
1da177e4 2027 */
6902f416
HR		 2028
2029 status = ahd_cmd_get_transaction_status(cmd);
2030 switch (status) {
2031 case CAM_REQ_INPROG:
2032 case CAM_REQ_CMP:
2033 new_status = DID_OK;
2034 break;
2035 case CAM_AUTOSENSE_FAIL:
2036 new_status = DID_ERROR;
2037 /* Fallthrough */
2038 case CAM_SCSI_STATUS_ERROR:
2039 scsi_status = ahd_cmd_get_scsi_status(cmd);
2040
2041 switch(scsi_status) {
2042 case SCSI_STATUS_CMD_TERMINATED:
2043 case SCSI_STATUS_CHECK_COND:
2044 if ((cmd->result >> 24) != DRIVER_SENSE) {
2045 do_fallback = 1;
2046 } else {
2047 struct scsi_sense_data *sense;
2048
2049 sense = (struct scsi_sense_data *)
c1c9ce52 2050 cmd->sense_buffer;
6902f416
HR		 2051 if (sense->extra_len >= 5 &&
2052 (sense->add_sense_code == 0x47
2053 || sense->add_sense_code == 0x48))
2054 do_fallback = 1;
2055 }
73a25462
HR		 2056 break;
2057 default:
73a25462
HR		 2058 break;
2059 }
6902f416
HR		 2060 break;
2061 case CAM_REQ_ABORTED:
2062 new_status = DID_ABORT;
2063 break;
2064 case CAM_BUSY:
2065 new_status = DID_BUS_BUSY;
2066 break;
2067 case CAM_REQ_INVALID:
2068 case CAM_PATH_INVALID:
2069 new_status = DID_BAD_TARGET;
2070 break;
2071 case CAM_SEL_TIMEOUT:
2072 new_status = DID_NO_CONNECT;
2073 break;
2074 case CAM_SCSI_BUS_RESET:
2075 case CAM_BDR_SENT:
2076 new_status = DID_RESET;
2077 break;
2078 case CAM_UNCOR_PARITY:
2079 new_status = DID_PARITY;
2080 do_fallback = 1;
2081 break;
2082 case CAM_CMD_TIMEOUT:
2083 new_status = DID_TIME_OUT;
2084 do_fallback = 1;
2085 break;
2086 case CAM_REQ_CMP_ERR:
2087 case CAM_UNEXP_BUSFREE:
2088 case CAM_DATA_RUN_ERR:
2089 new_status = DID_ERROR;
2090 do_fallback = 1;
2091 break;
2092 case CAM_UA_ABORT:
2093 case CAM_NO_HBA:
2094 case CAM_SEQUENCE_FAIL:
2095 case CAM_CCB_LEN_ERR:
2096 case CAM_PROVIDE_FAIL:
2097 case CAM_REQ_TERMIO:
2098 case CAM_UNREC_HBA_ERROR:
2099 case CAM_REQ_TOO_BIG:
2100 new_status = DID_ERROR;
2101 break;
2102 case CAM_REQUEUE_REQ:
2103 new_status = DID_REQUEUE;
2104 break;
2105 default:
2106 /* We should never get here */
2107 new_status = DID_ERROR;
2108 break;
2109 }
73a25462 2110
6902f416 2111 if (do_fallback) {
48813cf9 2112 printk("%s: device overrun (status %x) on %d:%d:%d\n",
6902f416 2113 ahd_name(ahd), status, cmd->device->channel,
9cb78c16 2114 cmd->device->id, (u8)cmd->device->lun);
73a25462
HR		 2115 }
2116
6902f416
HR		 2117 ahd_cmd_set_transaction_status(cmd, new_status);
2118
73a25462 2119 cmd->scsi_done(cmd);
1da177e4
LT		 2120}
2121
e3e0ca51 2122static void
73a25462 2123ahd_freeze_simq(struct ahd_softc *ahd)
1da177e4 2124{
7b22da38 2125 scsi_block_requests(ahd->platform_data->host);
1da177e4
LT		 2126}
2127
e3e0ca51 2128static void
73a25462 2129ahd_release_simq(struct ahd_softc *ahd)
1da177e4 2130{
7b22da38 2131 scsi_unblock_requests(ahd->platform_data->host);
73a25462 2132}
1da177e4 2133
73a25462 2134static int
6902f416 2135ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd)
73a25462
HR		 2136{
2137 struct ahd_softc *ahd;
2138 struct ahd_linux_device *dev;
2139 struct scb *pending_scb;
2140 u_int saved_scbptr;
2141 u_int active_scbptr;
2142 u_int last_phase;
2143 u_int saved_scsiid;
2144 u_int cdb_byte;
3eef38a1 2145 int retval = SUCCESS;
73a25462
HR		 2146 int was_paused;
2147 int paused;
2148 int wait;
2149 int disconnected;
2150 ahd_mode_state saved_modes;
4065a413 2151 unsigned long flags;
73a25462
HR		 2152
2153 pending_scb = NULL;
2154 paused = FALSE;
2155 wait = FALSE;
2156 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
2157
017560fc 2158 scmd_printk(KERN_INFO, cmd,
6902f416 2159 "Attempting to queue an ABORT message:");
73a25462 2160
48813cf9 2161 printk("CDB:");
73a25462 2162 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
48813cf9
PE		 2163 printk(" 0x%x", cmd->cmnd[cdb_byte]);
2164 printk("\n");
73a25462 2165
4065a413 2166 ahd_lock(ahd, &flags);
1da177e4 2167
1da177e4 2168 /*
73a25462
HR		 2169 * First determine if we currently own this command.
2170 * Start by searching the device queue. If not found
2171 * there, check the pending_scb list. If not found
2172 * at all, and the system wanted us to just abort the
2173 * command, return success.
1da177e4 2174 */
73a25462
HR		 2175 dev = scsi_transport_device_data(cmd->device);
2176
2177 if (dev == NULL) {
2178 /*
2179 * No target device for this command exists,
2180 * so we must not still own the command.
2181 */
017560fc 2182 scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
3eef38a1 2183 goto done;
73a25462 2184 }
1da177e4 2185
1da177e4 2186 /*
73a25462 2187 * See if we can find a matching cmd in the pending list.
1da177e4 2188 */
73a25462
HR		 2189 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
2190 if (pending_scb->io_ctx == cmd)
2191 break;
1da177e4
LT		 2192 }
2193
73a25462 2194 if (pending_scb == NULL) {
017560fc 2195 scmd_printk(KERN_INFO, cmd, "Command not found\n");
3eef38a1 2196 goto done;
1da177e4 2197 }
1da177e4 2198
73a25462
HR		 2199 if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
2200 /*
2201 * We can't queue two recovery actions using the same SCB
2202 */
2203 retval = FAILED;
3eef38a1 2204 goto done;
73a25462 2205 }
1da177e4 2206
1da177e4 2207 /*
73a25462
HR		 2208 * Ensure that the card doesn't do anything
2209 * behind our back. Also make sure that we
2210 * didn't "just" miss an interrupt that would
2211 * affect this cmd.
1da177e4 2212 */
73a25462
HR		 2213 was_paused = ahd_is_paused(ahd);
2214 ahd_pause_and_flushwork(ahd);
2215 paused = TRUE;
1da177e4 2216
73a25462 2217 if ((pending_scb->flags & SCB_ACTIVE) == 0) {
017560fc 2218 scmd_printk(KERN_INFO, cmd, "Command already completed\n");
3eef38a1 2219 goto done;
73a25462 2220 }
1da177e4 2221
48813cf9 2222 printk("%s: At time of recovery, card was %spaused\n",
73a25462
HR		 2223 ahd_name(ahd), was_paused ? "" : "not ");
2224 ahd_dump_card_state(ahd);
1da177e4 2225
73a25462 2226 disconnected = TRUE;
6902f416
HR		 2227 if (ahd_search_qinfifo(ahd, cmd->device->id,
2228 cmd->device->channel + 'A',
9cb78c16 2229 cmd->device->lun,
6902f416
HR		 2230 pending_scb->hscb->tag,
2231 ROLE_INITIATOR, CAM_REQ_ABORTED,
2232 SEARCH_COMPLETE) > 0) {
48813cf9 2233 printk("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
6902f416 2234 ahd_name(ahd), cmd->device->channel,
9cb78c16 2235 cmd->device->id, (u8)cmd->device->lun);
6902f416 2236 goto done;
73a25462 2237 }
1da177e4 2238
73a25462
HR		 2239 saved_modes = ahd_save_modes(ahd);
2240 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
2241 last_phase = ahd_inb(ahd, LASTPHASE);
2242 saved_scbptr = ahd_get_scbptr(ahd);
2243 active_scbptr = saved_scbptr;
6902f416 2244 if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
73a25462 2245 struct scb *bus_scb;
1da177e4 2246
73a25462
HR		 2247 bus_scb = ahd_lookup_scb(ahd, active_scbptr);
2248 if (bus_scb == pending_scb)
2249 disconnected = FALSE;
1da177e4 2250 }
73a25462
HR		 2251
2252 /*
2253 * At this point, pending_scb is the scb associated with the
2254 * passed in command. That command is currently active on the
2255 * bus or is in the disconnected state.
2256 */
2257 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
6902f416
HR		 2258 if (last_phase != P_BUSFREE
2259 && SCB_GET_TAG(pending_scb) == active_scbptr) {
73a25462 2260
1da177e4 2261 /*
73a25462
HR		 2262 * We're active on the bus, so assert ATN
2263 * and hope that the target responds.
1da177e4 2264 */
73a25462 2265 pending_scb = ahd_lookup_scb(ahd, active_scbptr);
6902f416 2266 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
73a25462
HR		 2267 ahd_outb(ahd, MSG_OUT, HOST_MSG);
2268 ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
6902f416 2269 scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n");
73a25462
HR		 2270 wait = TRUE;
2271 } else if (disconnected) {
2272
2273 /*
2274 * Actually re-queue this SCB in an attempt
2275 * to select the device before it reconnects.
2276 */
6902f416 2277 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
73a25462
HR		 2278 ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
2279 pending_scb->hscb->cdb_len = 0;
2280 pending_scb->hscb->task_attribute = 0;
2281 pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
2282
2283 if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
1da177e4 2284 /*
73a25462
HR		 2285 * Mark the SCB has having an outstanding
2286 * task management function. Should the command
2287 * complete normally before the task management
2288 * function can be sent, the host will be notified
2289 * to abort our requeued SCB.
1da177e4 2290 */
73a25462
HR		 2291 ahd_outb(ahd, SCB_TASK_MANAGEMENT,
2292 pending_scb->hscb->task_management);
2293 } else {
2294 /*
2295 * If non-packetized, set the MK_MESSAGE control
2296 * bit indicating that we desire to send a message.
2297 * We also set the disconnected flag since there is
2298 * no guarantee that our SCB control byte matches
2299 * the version on the card. We don't want the
2300 * sequencer to abort the command thinking an
2301 * unsolicited reselection occurred.
2302 */
2303 pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
2304
2305 /*
2306 * The sequencer will never re-reference the
2307 * in-core SCB. To make sure we are notified
b71a8eb0 2308 * during reselection, set the MK_MESSAGE flag in
73a25462
HR		 2309 * the card's copy of the SCB.
2310 */
2311 ahd_outb(ahd, SCB_CONTROL,
2312 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
1da177e4 2313 }
73a25462 2314
1da177e4 2315 /*
73a25462
HR		 2316 * Clear out any entries in the QINFIFO first
2317 * so we are the next SCB for this target
2318 * to run.
1da177e4 2319 */
73a25462
HR		 2320 ahd_search_qinfifo(ahd, cmd->device->id,
2321 cmd->device->channel + 'A', cmd->device->lun,
2322 SCB_LIST_NULL, ROLE_INITIATOR,
2323 CAM_REQUEUE_REQ, SEARCH_COMPLETE);
2324 ahd_qinfifo_requeue_tail(ahd, pending_scb);
2325 ahd_set_scbptr(ahd, saved_scbptr);
2326 ahd_print_path(ahd, pending_scb);
48813cf9 2327 printk("Device is disconnected, re-queuing SCB\n");
73a25462
HR		 2328 wait = TRUE;
2329 } else {
017560fc 2330 scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n");
73a25462 2331 retval = FAILED;
1da177e4 2332 }
1da177e4 2333
3eef38a1
HR		 2334
2335 ahd_restore_modes(ahd, saved_modes);
73a25462
HR		 2336done:
2337 if (paused)
2338 ahd_unpause(ahd);
2339 if (wait) {
6e9a4738 2340 DECLARE_COMPLETION_ONSTACK(done);
1da177e4 2341
7b22da38 2342 ahd->platform_data->eh_done = &done;
4065a413
CH		 2343 ahd_unlock(ahd, &flags);
2344
48813cf9 2345 printk("%s: Recovery code sleeping\n", ahd_name(ahd));
7b22da38
HR		 2346 if (!wait_for_completion_timeout(&done, 5 * HZ)) {
2347 ahd_lock(ahd, &flags);
2348 ahd->platform_data->eh_done = NULL;
2349 ahd_unlock(ahd, &flags);
48813cf9 2350 printk("%s: Timer Expired (active %d)\n",
11668bb6 2351 ahd_name(ahd), dev->active);
73a25462 2352 retval = FAILED;
1da177e4 2353 }
48813cf9 2354 printk("Recovery code awake\n");
eb221849
HR		 2355 } else
2356 ahd_unlock(ahd, &flags);
2357
7b22da38 2358 if (retval != SUCCESS)
48813cf9 2359 printk("%s: Command abort returning 0x%x\n",
7b22da38
HR		 2360 ahd_name(ahd), retval);
2361
2362 return retval;
1da177e4
LT		 2363}
2364
73a25462 2365static void ahd_linux_set_width(struct scsi_target *starget, int width)
1da177e4 2366{
73a25462
HR		 2367 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2368 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2369 struct ahd_devinfo devinfo;
2370 unsigned long flags;
1da177e4 2371
73a25462
HR		 2372 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2373 starget->channel + 'A', ROLE_INITIATOR);
2374 ahd_lock(ahd, &flags);
2375 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE);
2376 ahd_unlock(ahd, &flags);
2377}
2378
2379static void ahd_linux_set_period(struct scsi_target *starget, int period)
2380{
2381 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2382 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2383 struct ahd_tmode_tstate *tstate;
2384 struct ahd_initiator_tinfo *tinfo
2385 = ahd_fetch_transinfo(ahd,
2386 starget->channel + 'A',
2387 shost->this_id, starget->id, &tstate);
2388 struct ahd_devinfo devinfo;
2389 unsigned int ppr_options = tinfo->goal.ppr_options;
a4b53a11 2390 unsigned int dt;
73a25462
HR		 2391 unsigned long flags;
2392 unsigned long offset = tinfo->goal.offset;
1da177e4 2393
a4b53a11
HR		 2394#ifdef AHD_DEBUG
2395 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2396 printk("%s: set period to %d\n", ahd_name(ahd), period);
a4b53a11 2397#endif
73a25462
HR		 2398 if (offset == 0)
2399 offset = MAX_OFFSET;
1da177e4 2400
73a25462
HR		 2401 if (period < 8)
2402 period = 8;
2403 if (period < 10) {
0f82cb92
JB		 2404 if (spi_max_width(starget)) {
2405 ppr_options |= MSG_EXT_PPR_DT_REQ;
2406 if (period == 8)
2407 ppr_options |= MSG_EXT_PPR_IU_REQ;
2408 } else
2409 period = 10;
1da177e4
LT		 2410 }
2411
a4b53a11
HR		 2412 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2413
73a25462
HR		 2414 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2415 starget->channel + 'A', ROLE_INITIATOR);
1da177e4 2416
73a25462
HR		 2417 /* all PPR requests apart from QAS require wide transfers */
2418 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
2419 if (spi_width(starget) == 0)
2420 ppr_options &= MSG_EXT_PPR_QAS_REQ;
1da177e4 2421 }
73a25462 2422
a4b53a11
HR		 2423 ahd_find_syncrate(ahd, &period, &ppr_options,
2424 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2425
73a25462
HR		 2426 ahd_lock(ahd, &flags);
2427 ahd_set_syncrate(ahd, &devinfo, period, offset,
2428 ppr_options, AHD_TRANS_GOAL, FALSE);
2429 ahd_unlock(ahd, &flags);
1da177e4
LT		 2430}
2431
73a25462 2432static void ahd_linux_set_offset(struct scsi_target *starget, int offset)
1da177e4 2433{
73a25462
HR		 2434 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2435 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2436 struct ahd_tmode_tstate *tstate;
2437 struct ahd_initiator_tinfo *tinfo
2438 = ahd_fetch_transinfo(ahd,
2439 starget->channel + 'A',
2440 shost->this_id, starget->id, &tstate);
2441 struct ahd_devinfo devinfo;
2442 unsigned int ppr_options = 0;
2443 unsigned int period = 0;
a4b53a11 2444 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
73a25462
HR		 2445 unsigned long flags;
2446
a4b53a11
HR		 2447#ifdef AHD_DEBUG
2448 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2449 printk("%s: set offset to %d\n", ahd_name(ahd), offset);
a4b53a11
HR		 2450#endif
2451
73a25462
HR		 2452 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2453 starget->channel + 'A', ROLE_INITIATOR);
2454 if (offset != 0) {
2455 period = tinfo->goal.period;
2456 ppr_options = tinfo->goal.ppr_options;
a4b53a11
HR		 2457 ahd_find_syncrate(ahd, &period, &ppr_options,
2458 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
1da177e4 2459 }
a4b53a11 2460
73a25462
HR		 2461 ahd_lock(ahd, &flags);
2462 ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
2463 AHD_TRANS_GOAL, FALSE);
2464 ahd_unlock(ahd, &flags);
1da177e4
LT		 2465}
2466
73a25462 2467static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
1da177e4 2468{
73a25462
HR		 2469 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2470 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2471 struct ahd_tmode_tstate *tstate;
2472 struct ahd_initiator_tinfo *tinfo
2473 = ahd_fetch_transinfo(ahd,
2474 starget->channel + 'A',
2475 shost->this_id, starget->id, &tstate);
2476 struct ahd_devinfo devinfo;
2477 unsigned int ppr_options = tinfo->goal.ppr_options
2478 & ~MSG_EXT_PPR_DT_REQ;
2479 unsigned int period = tinfo->goal.period;
52b5cfb3 2480 unsigned int width = tinfo->goal.width;
73a25462
HR		 2481 unsigned long flags;
2482
a4b53a11
HR		 2483#ifdef AHD_DEBUG
2484 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2485 printk("%s: %s DT\n", ahd_name(ahd),
a4b53a11
HR		 2486 dt ? "enabling" : "disabling");
2487#endif
0f82cb92 2488 if (dt && spi_max_width(starget)) {
73a25462 2489 ppr_options |= MSG_EXT_PPR_DT_REQ;
52b5cfb3
HR		 2490 if (!width)
2491 ahd_linux_set_width(starget, 1);
a4b53a11
HR		 2492 } else {
2493 if (period <= 9)
2494 period = 10; /* If resetting DT, period must be >= 25ns */
2495 /* IU is invalid without DT set */
2496 ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2497 }
73a25462
HR		 2498 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2499 starget->channel + 'A', ROLE_INITIATOR);
2500 ahd_find_syncrate(ahd, &period, &ppr_options,
2501 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2502
73a25462
HR		 2503 ahd_lock(ahd, &flags);
2504 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2505 ppr_options, AHD_TRANS_GOAL, FALSE);
2506 ahd_unlock(ahd, &flags);
1da177e4
LT		 2507}
2508
73a25462 2509static void ahd_linux_set_qas(struct scsi_target *starget, int qas)
1da177e4 2510{
73a25462
HR		 2511 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2512 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2513 struct ahd_tmode_tstate *tstate;
2514 struct ahd_initiator_tinfo *tinfo
2515 = ahd_fetch_transinfo(ahd,
2516 starget->channel + 'A',
2517 shost->this_id, starget->id, &tstate);
2518 struct ahd_devinfo devinfo;
2519 unsigned int ppr_options = tinfo->goal.ppr_options
2520 & ~MSG_EXT_PPR_QAS_REQ;
2521 unsigned int period = tinfo->goal.period;
a4b53a11 2522 unsigned int dt;
73a25462
HR		 2523 unsigned long flags;
2524
a4b53a11
HR		 2525#ifdef AHD_DEBUG
2526 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2527 printk("%s: %s QAS\n", ahd_name(ahd),
a4b53a11
HR		 2528 qas ? "enabling" : "disabling");
2529#endif
2530
2531 if (qas) {
2532 ppr_options |= MSG_EXT_PPR_QAS_REQ;
2533 }
2534
2535 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
73a25462
HR		 2536
2537 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2538 starget->channel + 'A', ROLE_INITIATOR);
2539 ahd_find_syncrate(ahd, &period, &ppr_options,
2540 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2541
73a25462
HR		 2542 ahd_lock(ahd, &flags);
2543 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2544 ppr_options, AHD_TRANS_GOAL, FALSE);
2545 ahd_unlock(ahd, &flags);
1da177e4
LT		 2546}
2547
73a25462 2548static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
1da177e4 2549{
73a25462
HR		 2550 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2551 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2552 struct ahd_tmode_tstate *tstate;
2553 struct ahd_initiator_tinfo *tinfo
2554 = ahd_fetch_transinfo(ahd,
2555 starget->channel + 'A',
2556 shost->this_id, starget->id, &tstate);
2557 struct ahd_devinfo devinfo;
2558 unsigned int ppr_options = tinfo->goal.ppr_options
2559 & ~MSG_EXT_PPR_IU_REQ;
2560 unsigned int period = tinfo->goal.period;
a4b53a11 2561 unsigned int dt;
73a25462
HR		 2562 unsigned long flags;
2563
a4b53a11
HR		 2564#ifdef AHD_DEBUG
2565 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2566 printk("%s: %s IU\n", ahd_name(ahd),
a4b53a11
HR		 2567 iu ? "enabling" : "disabling");
2568#endif
2569
0f82cb92 2570 if (iu && spi_max_width(starget)) {
73a25462 2571 ppr_options |= MSG_EXT_PPR_IU_REQ;
a4b53a11
HR		 2572 ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
2573 }
2574
2575 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
73a25462
HR		 2576
2577 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2578 starget->channel + 'A', ROLE_INITIATOR);
2579 ahd_find_syncrate(ahd, &period, &ppr_options,
2580 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2581
73a25462
HR		 2582 ahd_lock(ahd, &flags);
2583 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2584 ppr_options, AHD_TRANS_GOAL, FALSE);
2585 ahd_unlock(ahd, &flags);
2586}
1da177e4 2587
73a25462
HR		 2588static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
2589{
2590 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2591 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2592 struct ahd_tmode_tstate *tstate;
2593 struct ahd_initiator_tinfo *tinfo
2594 = ahd_fetch_transinfo(ahd,
2595 starget->channel + 'A',
2596 shost->this_id, starget->id, &tstate);
2597 struct ahd_devinfo devinfo;
2598 unsigned int ppr_options = tinfo->goal.ppr_options
2599 & ~MSG_EXT_PPR_RD_STRM;
2600 unsigned int period = tinfo->goal.period;
2601 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2602 unsigned long flags;
2603
a4b53a11
HR		 2604#ifdef AHD_DEBUG
2605 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2606 printk("%s: %s Read Streaming\n", ahd_name(ahd),
a4b53a11
HR		 2607 rdstrm ? "enabling" : "disabling");
2608#endif
2609
0f82cb92 2610 if (rdstrm && spi_max_width(starget))
73a25462
HR		 2611 ppr_options |= MSG_EXT_PPR_RD_STRM;
2612
2613 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2614 starget->channel + 'A', ROLE_INITIATOR);
2615 ahd_find_syncrate(ahd, &period, &ppr_options,
2616 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
a4b53a11 2617
a4b53a11
HR		 2618 ahd_lock(ahd, &flags);
2619 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2620 ppr_options, AHD_TRANS_GOAL, FALSE);
2621 ahd_unlock(ahd, &flags);
2622}
2623
2624static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
2625{
2626 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2627 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2628 struct ahd_tmode_tstate *tstate;
2629 struct ahd_initiator_tinfo *tinfo
2630 = ahd_fetch_transinfo(ahd,
2631 starget->channel + 'A',
2632 shost->this_id, starget->id, &tstate);
2633 struct ahd_devinfo devinfo;
2634 unsigned int ppr_options = tinfo->goal.ppr_options
2635 & ~MSG_EXT_PPR_WR_FLOW;
2636 unsigned int period = tinfo->goal.period;
2637 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2638 unsigned long flags;
2639
2640#ifdef AHD_DEBUG
2641 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2642 printk("%s: %s Write Flow Control\n", ahd_name(ahd),
a4b53a11
HR		 2643 wrflow ? "enabling" : "disabling");
2644#endif
2645
0f82cb92 2646 if (wrflow && spi_max_width(starget))
a4b53a11
HR		 2647 ppr_options |= MSG_EXT_PPR_WR_FLOW;
2648
2649 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2650 starget->channel + 'A', ROLE_INITIATOR);
2651 ahd_find_syncrate(ahd, &period, &ppr_options,
2652 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2653
a4b53a11
HR		 2654 ahd_lock(ahd, &flags);
2655 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2656 ppr_options, AHD_TRANS_GOAL, FALSE);
2657 ahd_unlock(ahd, &flags);
2658}
2659
2660static void ahd_linux_set_rti(struct scsi_target *starget, int rti)
2661{
2662 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2663 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2664 struct ahd_tmode_tstate *tstate;
2665 struct ahd_initiator_tinfo *tinfo
2666 = ahd_fetch_transinfo(ahd,
2667 starget->channel + 'A',
2668 shost->this_id, starget->id, &tstate);
2669 struct ahd_devinfo devinfo;
2670 unsigned int ppr_options = tinfo->goal.ppr_options
2671 & ~MSG_EXT_PPR_RTI;
2672 unsigned int period = tinfo->goal.period;
2673 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2674 unsigned long flags;
2675
2676 if ((ahd->features & AHD_RTI) == 0) {
2677#ifdef AHD_DEBUG
2678 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2679 printk("%s: RTI not available\n", ahd_name(ahd));
a4b53a11
HR		 2680#endif
2681 return;
2682 }
2683
2684#ifdef AHD_DEBUG
2685 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2686 printk("%s: %s RTI\n", ahd_name(ahd),
a4b53a11
HR		 2687 rti ? "enabling" : "disabling");
2688#endif
2689
0f82cb92 2690 if (rti && spi_max_width(starget))
a4b53a11
HR		 2691 ppr_options |= MSG_EXT_PPR_RTI;
2692
2693 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2694 starget->channel + 'A', ROLE_INITIATOR);
2695 ahd_find_syncrate(ahd, &period, &ppr_options,
2696 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2697
a4b53a11
HR		 2698 ahd_lock(ahd, &flags);
2699 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2700 ppr_options, AHD_TRANS_GOAL, FALSE);
2701 ahd_unlock(ahd, &flags);
2702}
2703
2704static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
2705{
2706 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2707 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2708 struct ahd_tmode_tstate *tstate;
2709 struct ahd_initiator_tinfo *tinfo
2710 = ahd_fetch_transinfo(ahd,
2711 starget->channel + 'A',
2712 shost->this_id, starget->id, &tstate);
2713 struct ahd_devinfo devinfo;
2714 unsigned int ppr_options = tinfo->goal.ppr_options
2715 & ~MSG_EXT_PPR_PCOMP_EN;
2716 unsigned int period = tinfo->goal.period;
2717 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2718 unsigned long flags;
2719
2720#ifdef AHD_DEBUG
2721 if ((ahd_debug & AHD_SHOW_DV) != 0)
48813cf9 2722 printk("%s: %s Precompensation\n", ahd_name(ahd),
a4b53a11
HR		 2723 pcomp ? "Enable" : "Disable");
2724#endif
2725
0f82cb92 2726 if (pcomp && spi_max_width(starget)) {
843822ad
HR		 2727 uint8_t precomp;
2728
2729 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
980b306a 2730 const struct ahd_linux_iocell_opts *iocell_opts;
843822ad
HR		 2731
2732 iocell_opts = &aic79xx_iocell_info[ahd->unit];
2733 precomp = iocell_opts->precomp;
2734 } else {
2735 precomp = AIC79XX_DEFAULT_PRECOMP;
2736 }
a4b53a11 2737 ppr_options |= MSG_EXT_PPR_PCOMP_EN;
843822ad
HR		 2738 AHD_SET_PRECOMP(ahd, precomp);
2739 } else {
2740 AHD_SET_PRECOMP(ahd, 0);
2741 }
a4b53a11
HR		 2742
2743 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2744 starget->channel + 'A', ROLE_INITIATOR);
2745 ahd_find_syncrate(ahd, &period, &ppr_options,
2746 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2747
73a25462
HR		 2748 ahd_lock(ahd, &flags);
2749 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2750 ppr_options, AHD_TRANS_GOAL, FALSE);
2751 ahd_unlock(ahd, &flags);
1da177e4
LT		 2752}
2753
88ff29a4
JB		 2754static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
2755{
2756 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2757 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2758 struct ahd_tmode_tstate *tstate;
2759 struct ahd_initiator_tinfo *tinfo
2760 = ahd_fetch_transinfo(ahd,
2761 starget->channel + 'A',
2762 shost->this_id, starget->id, &tstate);
2763 struct ahd_devinfo devinfo;
2764 unsigned int ppr_options = tinfo->goal.ppr_options
2765 & ~MSG_EXT_PPR_HOLD_MCS;
2766 unsigned int period = tinfo->goal.period;
2767 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2768 unsigned long flags;
2769
0f82cb92 2770 if (hold && spi_max_width(starget))
88ff29a4
JB		 2771 ppr_options |= MSG_EXT_PPR_HOLD_MCS;
2772
2773 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2774 starget->channel + 'A', ROLE_INITIATOR);
2775 ahd_find_syncrate(ahd, &period, &ppr_options,
2776 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2777
2778 ahd_lock(ahd, &flags);
2779 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2780 ppr_options, AHD_TRANS_GOAL, FALSE);
2781 ahd_unlock(ahd, &flags);
2782}
2783
d6b9ccbb
HR		 2784static void ahd_linux_get_signalling(struct Scsi_Host *shost)
2785{
2786 struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata;
2787 unsigned long flags;
2788 u8 mode;
88ff29a4 2789
d6b9ccbb
HR		 2790 ahd_lock(ahd, &flags);
2791 ahd_pause(ahd);
2792 mode = ahd_inb(ahd, SBLKCTL);
2793 ahd_unpause(ahd);
2794 ahd_unlock(ahd, &flags);
2795
2796 if (mode & ENAB40)
2797 spi_signalling(shost) = SPI_SIGNAL_LVD;
2798 else if (mode & ENAB20)
2799 spi_signalling(shost) = SPI_SIGNAL_SE;
2800 else
2801 spi_signalling(shost) = SPI_SIGNAL_UNKNOWN;
2802}
88ff29a4 2803
73a25462
HR		 2804static struct spi_function_template ahd_linux_transport_functions = {
2805 .set_offset = ahd_linux_set_offset,
2806 .show_offset = 1,
2807 .set_period = ahd_linux_set_period,
2808 .show_period = 1,
2809 .set_width = ahd_linux_set_width,
2810 .show_width = 1,
2811 .set_dt = ahd_linux_set_dt,
2812 .show_dt = 1,
2813 .set_iu = ahd_linux_set_iu,
2814 .show_iu = 1,
2815 .set_qas = ahd_linux_set_qas,
2816 .show_qas = 1,
2817 .set_rd_strm = ahd_linux_set_rd_strm,
2818 .show_rd_strm = 1,
a4b53a11
HR		 2819 .set_wr_flow = ahd_linux_set_wr_flow,
2820 .show_wr_flow = 1,
2821 .set_rti = ahd_linux_set_rti,
2822 .show_rti = 1,
2823 .set_pcomp_en = ahd_linux_set_pcomp_en,
2824 .show_pcomp_en = 1,
88ff29a4
JB		 2825 .set_hold_mcs = ahd_linux_set_hold_mcs,
2826 .show_hold_mcs = 1,
d6b9ccbb 2827 .get_signalling = ahd_linux_get_signalling,
73a25462
HR		 2828};
2829
1da177e4
LT		 2830static int __init
2831ahd_linux_init(void)
2832{
85a46523
CH		 2833 int error = 0;
2834
2835 /*
2836 * If we've been passed any parameters, process them now.
2837 */
2838 if (aic79xx)
2839 aic79xx_setup(aic79xx);
2840
2841 ahd_linux_transport_template =
2842 spi_attach_transport(&ahd_linux_transport_functions);
73a25462
HR		 2843 if (!ahd_linux_transport_template)
2844 return -ENODEV;
85a46523 2845
73a25462
HR		 2846 scsi_transport_reserve_device(ahd_linux_transport_template,
2847 sizeof(struct ahd_linux_device));
a80b3424 2848
85a46523
CH		 2849 error = ahd_linux_pci_init();
2850 if (error)
2851 spi_release_transport(ahd_linux_transport_template);
2852 return error;
1da177e4
LT		 2853}
2854
2855static void __exit
2856ahd_linux_exit(void)
2857{
1da177e4 2858 ahd_linux_pci_exit();
73a25462 2859 spi_release_transport(ahd_linux_transport_template);
1da177e4
LT		 2860}
2861
2862module_init(ahd_linux_init);
2863module_exit(ahd_linux_exit);
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