2 * Adaptec AIC79xx device driver for Linux.
4 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#171 $
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.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
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.
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.
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.
45 #include "aic79xx_osm.h"
46 #include "aic79xx_inline.h"
47 #include <scsi/scsicam.h>
49 static struct scsi_transport_template *ahd_linux_transport_template = NULL;
51 #include <linux/init.h> /* __setup */
52 #include <linux/mm.h> /* For fetching system memory size */
53 #include <linux/blkdev.h> /* For block_size() */
54 #include <linux/delay.h> /* For ssleep/msleep */
55 #include <linux/device.h>
58 * Bucket size for counting good commands in between bad ones.
60 #define AHD_LINUX_ERR_THRESH 1000
63 * Set this to the delay in seconds after SCSI bus reset.
64 * Note, we honor this only for the initial bus reset.
65 * The scsi error recovery code performs its own bus settle
66 * delay handling for error recovery actions.
68 #ifdef CONFIG_AIC79XX_RESET_DELAY_MS
69 #define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS
71 #define AIC79XX_RESET_DELAY 5000
75 * To change the default number of tagged transactions allowed per-device,
76 * add a line to the lilo.conf file like:
77 * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}"
78 * which will result in the first four devices on the first two
79 * controllers being set to a tagged queue depth of 32.
81 * The tag_commands is an array of 16 to allow for wide and twin adapters.
82 * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
86 uint16_t tag_commands[16]; /* Allow for wide/twin adapters. */
90 * Modify this as you see fit for your system.
92 * 0 tagged queuing disabled
93 * 1 <= n <= 253 n == max tags ever dispatched.
95 * The driver will throttle the number of commands dispatched to a
96 * device if it returns queue full. For devices with a fixed maximum
97 * queue depth, the driver will eventually determine this depth and
98 * lock it in (a console message is printed to indicate that a lock
99 * has occurred). On some devices, queue full is returned for a temporary
100 * resource shortage. These devices will return queue full at varying
101 * depths. The driver will throttle back when the queue fulls occur and
102 * attempt to slowly increase the depth over time as the device recovers
103 * from the resource shortage.
105 * In this example, the first line will disable tagged queueing for all
106 * the devices on the first probed aic79xx adapter.
108 * The second line enables tagged queueing with 4 commands/LUN for IDs
109 * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
110 * driver to attempt to use up to 64 tags for ID 1.
112 * The third line is the same as the first line.
114 * The fourth line disables tagged queueing for devices 0 and 3. It
115 * enables tagged queueing for the other IDs, with 16 commands/LUN
116 * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
117 * IDs 2, 5-7, and 9-15.
121 * NOTE: The below structure is for reference only, the actual structure
122 * to modify in order to change things is just below this comment block.
123 adapter_tag_info_t aic79xx_tag_info[] =
125 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
126 {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}},
127 {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
128 {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
132 #ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE
133 #define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE
135 #define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE
138 #define AIC79XX_CONFIGED_TAG_COMMANDS { \
139 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
140 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
141 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
142 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
143 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
144 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
145 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
146 AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \
150 * By default, use the number of commands specified by
151 * the users kernel configuration.
153 static adapter_tag_info_t aic79xx_tag_info[] =
155 {AIC79XX_CONFIGED_TAG_COMMANDS},
156 {AIC79XX_CONFIGED_TAG_COMMANDS},
157 {AIC79XX_CONFIGED_TAG_COMMANDS},
158 {AIC79XX_CONFIGED_TAG_COMMANDS},
159 {AIC79XX_CONFIGED_TAG_COMMANDS},
160 {AIC79XX_CONFIGED_TAG_COMMANDS},
161 {AIC79XX_CONFIGED_TAG_COMMANDS},
162 {AIC79XX_CONFIGED_TAG_COMMANDS},
163 {AIC79XX_CONFIGED_TAG_COMMANDS},
164 {AIC79XX_CONFIGED_TAG_COMMANDS},
165 {AIC79XX_CONFIGED_TAG_COMMANDS},
166 {AIC79XX_CONFIGED_TAG_COMMANDS},
167 {AIC79XX_CONFIGED_TAG_COMMANDS},
168 {AIC79XX_CONFIGED_TAG_COMMANDS},
169 {AIC79XX_CONFIGED_TAG_COMMANDS},
170 {AIC79XX_CONFIGED_TAG_COMMANDS}
174 * The I/O cell on the chip is very configurable in respect to its analog
175 * characteristics. Set the defaults here; they can be overriden with
176 * the proper insmod parameters.
178 struct ahd_linux_iocell_opts
184 #define AIC79XX_DEFAULT_PRECOMP 0xFF
185 #define AIC79XX_DEFAULT_SLEWRATE 0xFF
186 #define AIC79XX_DEFAULT_AMPLITUDE 0xFF
187 #define AIC79XX_DEFAULT_IOOPTS \
189 AIC79XX_DEFAULT_PRECOMP, \
190 AIC79XX_DEFAULT_SLEWRATE, \
191 AIC79XX_DEFAULT_AMPLITUDE \
193 #define AIC79XX_PRECOMP_INDEX 0
194 #define AIC79XX_SLEWRATE_INDEX 1
195 #define AIC79XX_AMPLITUDE_INDEX 2
196 static struct ahd_linux_iocell_opts aic79xx_iocell_info[] =
198 AIC79XX_DEFAULT_IOOPTS,
199 AIC79XX_DEFAULT_IOOPTS,
200 AIC79XX_DEFAULT_IOOPTS,
201 AIC79XX_DEFAULT_IOOPTS,
202 AIC79XX_DEFAULT_IOOPTS,
203 AIC79XX_DEFAULT_IOOPTS,
204 AIC79XX_DEFAULT_IOOPTS,
205 AIC79XX_DEFAULT_IOOPTS,
206 AIC79XX_DEFAULT_IOOPTS,
207 AIC79XX_DEFAULT_IOOPTS,
208 AIC79XX_DEFAULT_IOOPTS,
209 AIC79XX_DEFAULT_IOOPTS,
210 AIC79XX_DEFAULT_IOOPTS,
211 AIC79XX_DEFAULT_IOOPTS,
212 AIC79XX_DEFAULT_IOOPTS,
213 AIC79XX_DEFAULT_IOOPTS
217 * There should be a specific return value for this in scsi.h, but
218 * it seems that most drivers ignore it.
220 #define DID_UNDERFLOW DID_ERROR
223 ahd_print_path(struct ahd_softc *ahd, struct scb *scb)
225 printk("(scsi%d:%c:%d:%d): ",
226 ahd->platform_data->host->host_no,
227 scb != NULL ? SCB_GET_CHANNEL(ahd, scb) : 'X',
228 scb != NULL ? SCB_GET_TARGET(ahd, scb) : -1,
229 scb != NULL ? SCB_GET_LUN(scb) : -1);
233 * XXX - these options apply unilaterally to _all_ adapters
234 * cards in the system. This should be fixed. Exceptions to this
235 * rule are noted in the comments.
239 * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
240 * has no effect on any later resets that might occur due to things like
243 static uint32_t aic79xx_no_reset;
246 * Should we force EXTENDED translation on a controller.
247 * 0 == Use whatever is in the SEEPROM or default to off
248 * 1 == Use whatever is in the SEEPROM or default to on
250 static uint32_t aic79xx_extended;
253 * PCI bus parity checking of the Adaptec controllers. This is somewhat
254 * dubious at best. To my knowledge, this option has never actually
255 * solved a PCI parity problem, but on certain machines with broken PCI
256 * chipset configurations, it can generate tons of false error messages.
257 * It's included in the driver for completeness.
258 * 0 = Shut off PCI parity check
259 * non-0 = Enable PCI parity check
261 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
262 * variable to -1 you would actually want to simply pass the variable
263 * name without a number. That will invert the 0 which will result in
266 static uint32_t aic79xx_pci_parity = ~0;
269 * There are lots of broken chipsets in the world. Some of them will
270 * violate the PCI spec when we issue byte sized memory writes to our
271 * controller. I/O mapped register access, if allowed by the given
272 * platform, will work in almost all cases.
274 uint32_t aic79xx_allow_memio = ~0;
277 * So that we can set how long each device is given as a selection timeout.
278 * The table of values goes like this:
283 * We default to 256ms because some older devices need a longer time
284 * to respond to initial selection.
286 static uint32_t aic79xx_seltime;
289 * Certain devices do not perform any aging on commands. Should the
290 * device be saturated by commands in one portion of the disk, it is
291 * possible for transactions on far away sectors to never be serviced.
292 * To handle these devices, we can periodically send an ordered tag to
293 * force all outstanding transactions to be serviced prior to a new
296 static uint32_t aic79xx_periodic_otag;
298 /* Some storage boxes are using an LSI chip which has a bug making it
299 * impossible to use aic79xx Rev B chip in 320 speeds. The following
300 * storage boxes have been reported to be buggy:
301 * EonStor 3U 16-Bay: U16U-G3A3
302 * EonStor 2U 12-Bay: U12U-G3A3
303 * SentinelRAID: 2500F R5 / R6
304 * SentinelRAID: 2500F R1
305 * SentinelRAID: 2500F/1500F
308 * To get around this LSI bug, you can set your board to 160 mode
309 * or you can enable the SLOWCRC bit.
311 uint32_t aic79xx_slowcrc;
314 * Module information and settable options.
316 static char *aic79xx = NULL;
318 MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
319 MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
320 MODULE_LICENSE("Dual BSD/GPL");
321 MODULE_VERSION(AIC79XX_DRIVER_VERSION);
322 module_param(aic79xx, charp, 0444);
323 MODULE_PARM_DESC(aic79xx,
324 "period-delimited options string:\n"
325 " verbose Enable verbose/diagnostic logging\n"
326 " allow_memio Allow device registers to be memory mapped\n"
327 " debug Bitmask of debug values to enable\n"
328 " no_reset Supress initial bus resets\n"
329 " extended Enable extended geometry on all controllers\n"
330 " periodic_otag Send an ordered tagged transaction\n"
331 " periodically to prevent tag starvation.\n"
332 " This may be required by some older disk\n"
333 " or drives/RAID arrays.\n"
334 " tag_info:<tag_str> Set per-target tag depth\n"
335 " global_tag_depth:<int> Global tag depth for all targets on all buses\n"
336 " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
337 " precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
338 " amplitude:<int> Set the signal amplitude (0-7).\n"
339 " seltime:<int> Selection Timeout:\n"
340 " (0/256ms,1/128ms,2/64ms,3/32ms)\n"
341 " slowcrc Turn on the SLOWCRC bit (Rev B only)\n"
343 " Sample /etc/modprobe.conf line:\n"
344 " Enable verbose logging\n"
345 " Set tag depth on Controller 2/Target 2 to 10 tags\n"
346 " Shorten the selection timeout to 128ms\n"
348 " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
351 static void ahd_linux_handle_scsi_status(struct ahd_softc *,
352 struct scsi_device *,
354 static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd,
355 struct scsi_cmnd *cmd);
356 static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd);
357 static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd);
358 static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd,
359 struct ahd_devinfo *devinfo);
360 static void ahd_linux_device_queue_depth(struct scsi_device *);
361 static int ahd_linux_run_command(struct ahd_softc*,
362 struct ahd_linux_device *,
364 static void ahd_linux_setup_tag_info_global(char *p);
365 static int aic79xx_setup(char *c);
367 static int ahd_linux_unit;
370 /****************************** Inlines ***************************************/
371 static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
374 ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
376 struct scsi_cmnd *cmd;
380 direction = cmd->sc_data_direction;
381 ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE);
382 if (cmd->use_sg != 0) {
383 struct scatterlist *sg;
385 sg = (struct scatterlist *)cmd->request_buffer;
386 pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction);
387 } else if (cmd->request_bufflen != 0) {
388 pci_unmap_single(ahd->dev_softc,
389 scb->platform_data->buf_busaddr,
390 cmd->request_bufflen, direction);
394 /******************************** Macros **************************************/
395 #define BUILD_SCSIID(ahd, cmd) \
396 (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
399 * Return a string describing the driver.
402 ahd_linux_info(struct Scsi_Host *host)
404 static char buffer[512];
407 struct ahd_softc *ahd;
410 ahd = *(struct ahd_softc **)host->hostdata;
411 memset(bp, 0, sizeof(buffer));
412 strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
413 strcat(bp, AIC79XX_DRIVER_VERSION);
416 strcat(bp, ahd->description);
419 ahd_controller_info(ahd, ahd_info);
420 strcat(bp, ahd_info);
426 * Queue an SCB to the controller.
429 ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
431 struct ahd_softc *ahd;
432 struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device);
433 int rtn = SCSI_MLQUEUE_HOST_BUSY;
435 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
437 cmd->scsi_done = scsi_done;
438 cmd->result = CAM_REQ_INPROG << 16;
439 rtn = ahd_linux_run_command(ahd, dev, cmd);
444 static inline struct scsi_target **
445 ahd_linux_target_in_softc(struct scsi_target *starget)
447 struct ahd_softc *ahd =
448 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
449 unsigned int target_offset;
451 target_offset = starget->id;
452 if (starget->channel != 0)
455 return &ahd->platform_data->starget[target_offset];
459 ahd_linux_target_alloc(struct scsi_target *starget)
461 struct ahd_softc *ahd =
462 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
463 struct seeprom_config *sc = ahd->seep_config;
465 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
466 struct ahd_devinfo devinfo;
467 struct ahd_initiator_tinfo *tinfo;
468 struct ahd_tmode_tstate *tstate;
469 char channel = starget->channel + 'A';
471 ahd_lock(ahd, &flags);
473 BUG_ON(*ahd_targp != NULL);
475 *ahd_targp = starget;
478 int flags = sc->device_flags[starget->id];
480 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
481 starget->id, &tstate);
483 if ((flags & CFPACKETIZED) == 0) {
484 /* Do not negotiate packetized transfers */
485 spi_rd_strm(starget) = 0;
486 spi_pcomp_en(starget) = 0;
487 spi_rti(starget) = 0;
488 spi_wr_flow(starget) = 0;
489 spi_hold_mcs(starget) = 0;
491 if ((ahd->features & AHD_RTI) == 0)
492 spi_rti(starget) = 0;
495 if ((flags & CFQAS) == 0)
496 spi_qas(starget) = 0;
498 /* Transinfo values have been set to BIOS settings */
499 spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0;
500 spi_min_period(starget) = tinfo->user.period;
501 spi_max_offset(starget) = tinfo->user.offset;
504 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
505 starget->id, &tstate);
506 ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id,
507 CAM_LUN_WILDCARD, channel,
509 ahd_set_syncrate(ahd, &devinfo, 0, 0, 0,
510 AHD_TRANS_GOAL, /*paused*/FALSE);
511 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
512 AHD_TRANS_GOAL, /*paused*/FALSE);
513 ahd_unlock(ahd, &flags);
519 ahd_linux_target_destroy(struct scsi_target *starget)
521 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
527 ahd_linux_slave_alloc(struct scsi_device *sdev)
529 struct ahd_softc *ahd =
530 *((struct ahd_softc **)sdev->host->hostdata);
531 struct ahd_linux_device *dev;
534 printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id);
536 dev = scsi_transport_device_data(sdev);
537 memset(dev, 0, sizeof(*dev));
540 * We start out life using untagged
541 * transactions of which we allow one.
546 * Set maxtags to 0. This will be changed if we
547 * later determine that we are dealing with
548 * a tagged queuing capable device.
556 ahd_linux_slave_configure(struct scsi_device *sdev)
558 struct ahd_softc *ahd;
560 ahd = *((struct ahd_softc **)sdev->host->hostdata);
562 sdev_printk(KERN_INFO, sdev, "Slave Configure\n");
564 ahd_linux_device_queue_depth(sdev);
566 /* Initial Domain Validation */
567 if (!spi_initial_dv(sdev->sdev_target))
573 #if defined(__i386__)
575 * Return the disk geometry for the given SCSI device.
578 ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
579 sector_t capacity, int geom[])
587 struct ahd_softc *ahd;
589 ahd = *((struct ahd_softc **)sdev->host->hostdata);
591 bh = scsi_bios_ptable(bdev);
593 ret = scsi_partsize(bh, capacity,
594 &geom[2], &geom[0], &geom[1]);
601 cylinders = aic_sector_div(capacity, heads, sectors);
603 if (aic79xx_extended != 0)
606 extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0;
607 if (extended && cylinders >= 1024) {
610 cylinders = aic_sector_div(capacity, heads, sectors);
620 * Abort the current SCSI command(s).
623 ahd_linux_abort(struct scsi_cmnd *cmd)
627 error = ahd_linux_queue_abort_cmd(cmd);
633 * Attempt to send a target reset message to the device that timed out.
636 ahd_linux_dev_reset(struct scsi_cmnd *cmd)
638 struct ahd_softc *ahd;
639 struct ahd_linux_device *dev;
640 struct scb *reset_scb;
642 int retval = SUCCESS;
645 struct ahd_initiator_tinfo *tinfo;
646 struct ahd_tmode_tstate *tstate;
648 DECLARE_COMPLETION_ONSTACK(done);
653 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
655 scmd_printk(KERN_INFO, cmd,
656 "Attempting to queue a TARGET RESET message:");
659 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
660 printf(" 0x%x", cmd->cmnd[cdb_byte]);
664 * Determine if we currently own this command.
666 dev = scsi_transport_device_data(cmd->device);
670 * No target device for this command exists,
671 * so we must not still own the command.
673 scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
678 * Generate us a new SCB
680 reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX);
682 scmd_printk(KERN_INFO, cmd, "No SCB available\n");
686 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
687 cmd->device->id, &tstate);
688 reset_scb->io_ctx = cmd;
689 reset_scb->platform_data->dev = dev;
690 reset_scb->sg_count = 0;
691 ahd_set_residual(reset_scb, 0);
692 ahd_set_sense_residual(reset_scb, 0);
693 reset_scb->platform_data->xfer_len = 0;
694 reset_scb->hscb->control = 0;
695 reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd);
696 reset_scb->hscb->lun = cmd->device->lun;
697 reset_scb->hscb->cdb_len = 0;
698 reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET;
699 reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE;
700 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
701 reset_scb->flags |= SCB_PACKETIZED;
703 reset_scb->hscb->control |= MK_MESSAGE;
707 dev->commands_issued++;
709 ahd_lock(ahd, &flags);
711 LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links);
712 ahd_queue_scb(ahd, reset_scb);
714 ahd->platform_data->eh_done = &done;
715 ahd_unlock(ahd, &flags);
717 printf("%s: Device reset code sleeping\n", ahd_name(ahd));
718 if (!wait_for_completion_timeout(&done, 5 * HZ)) {
719 ahd_lock(ahd, &flags);
720 ahd->platform_data->eh_done = NULL;
721 ahd_unlock(ahd, &flags);
722 printf("%s: Device reset timer expired (active %d)\n",
723 ahd_name(ahd), dev->active);
726 printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval);
732 * Reset the SCSI bus.
735 ahd_linux_bus_reset(struct scsi_cmnd *cmd)
737 struct ahd_softc *ahd;
741 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
743 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
744 printf("%s: Bus reset called for cmd %p\n",
747 ahd_lock(ahd, &flags);
749 found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A',
750 /*initiate reset*/TRUE);
751 ahd_unlock(ahd, &flags);
754 printf("%s: SCSI bus reset delivered. "
755 "%d SCBs aborted.\n", ahd_name(ahd), found);
760 struct scsi_host_template aic79xx_driver_template = {
761 .module = THIS_MODULE,
763 .proc_name = "aic79xx",
764 .proc_info = ahd_linux_proc_info,
765 .info = ahd_linux_info,
766 .queuecommand = ahd_linux_queue,
767 .eh_abort_handler = ahd_linux_abort,
768 .eh_device_reset_handler = ahd_linux_dev_reset,
769 .eh_bus_reset_handler = ahd_linux_bus_reset,
770 #if defined(__i386__)
771 .bios_param = ahd_linux_biosparam,
773 .can_queue = AHD_MAX_QUEUE,
777 .use_clustering = ENABLE_CLUSTERING,
778 .slave_alloc = ahd_linux_slave_alloc,
779 .slave_configure = ahd_linux_slave_configure,
780 .target_alloc = ahd_linux_target_alloc,
781 .target_destroy = ahd_linux_target_destroy,
784 /******************************** Bus DMA *************************************/
786 ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent,
787 bus_size_t alignment, bus_size_t boundary,
788 dma_addr_t lowaddr, dma_addr_t highaddr,
789 bus_dma_filter_t *filter, void *filterarg,
790 bus_size_t maxsize, int nsegments,
791 bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
795 dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT);
800 * Linux is very simplistic about DMA memory. For now don't
801 * maintain all specification information. Once Linux supplies
802 * better facilities for doing these operations, or the
803 * needs of this particular driver change, we might need to do
806 dmat->alignment = alignment;
807 dmat->boundary = boundary;
808 dmat->maxsize = maxsize;
814 ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat)
816 free(dmat, M_DEVBUF);
820 ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr,
821 int flags, bus_dmamap_t *mapp)
823 *vaddr = pci_alloc_consistent(ahd->dev_softc,
824 dmat->maxsize, mapp);
831 ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat,
832 void* vaddr, bus_dmamap_t map)
834 pci_free_consistent(ahd->dev_softc, dmat->maxsize,
839 ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map,
840 void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb,
841 void *cb_arg, int flags)
844 * Assume for now that this will only be used during
845 * initialization and not for per-transaction buffer mapping.
847 bus_dma_segment_t stack_sg;
849 stack_sg.ds_addr = map;
850 stack_sg.ds_len = dmat->maxsize;
851 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
856 ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
861 ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
867 /********************* Platform Dependent Functions ***************************/
869 ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value)
873 && (instance < ARRAY_SIZE(aic79xx_iocell_info))) {
874 uint8_t *iocell_info;
876 iocell_info = (uint8_t*)&aic79xx_iocell_info[instance];
877 iocell_info[index] = value & 0xFFFF;
879 printf("iocell[%d:%ld] = %d\n", instance, index, value);
884 ahd_linux_setup_tag_info_global(char *p)
888 tags = simple_strtoul(p + 1, NULL, 0) & 0xff;
889 printf("Setting Global Tags= %d\n", tags);
891 for (i = 0; i < ARRAY_SIZE(aic79xx_tag_info); i++) {
892 for (j = 0; j < AHD_NUM_TARGETS; j++) {
893 aic79xx_tag_info[i].tag_commands[j] = tags;
899 ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
902 if ((instance >= 0) && (targ >= 0)
903 && (instance < ARRAY_SIZE(aic79xx_tag_info))
904 && (targ < AHD_NUM_TARGETS)) {
905 aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF;
907 printf("tag_info[%d:%d] = %d\n", instance, targ, value);
912 ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth,
913 void (*callback)(u_long, int, int, int32_t),
922 char tok_list[] = {'.', ',', '{', '}', '\0'};
924 /* All options use a ':' name/arg separator */
932 * Restore separator that may be in
933 * the middle of our option argument.
935 tok_end = strchr(opt_arg, '\0');
941 if (instance == -1) {
948 printf("Malformed Option %s\n",
958 else if (instance != -1)
968 else if (instance >= 0)
977 for (i = 0; tok_list[i]; i++) {
978 tok_end2 = strchr(opt_arg, tok_list[i]);
979 if ((tok_end2) && (tok_end2 < tok_end))
982 callback(callback_arg, instance, targ,
983 simple_strtol(opt_arg, NULL, 0));
992 * Handle Linux boot parameters. This routine allows for assigning a value
993 * to a parameter with a ':' between the parameter and the value.
994 * ie. aic79xx=stpwlev:1,extended
997 aic79xx_setup(char *s)
1007 { "extended", &aic79xx_extended },
1008 { "no_reset", &aic79xx_no_reset },
1009 { "verbose", &aic79xx_verbose },
1010 { "allow_memio", &aic79xx_allow_memio},
1012 { "debug", &ahd_debug },
1014 { "periodic_otag", &aic79xx_periodic_otag },
1015 { "pci_parity", &aic79xx_pci_parity },
1016 { "seltime", &aic79xx_seltime },
1017 { "tag_info", NULL },
1018 { "global_tag_depth", NULL},
1019 { "slewrate", NULL },
1020 { "precomp", NULL },
1021 { "amplitude", NULL },
1022 { "slowcrc", &aic79xx_slowcrc },
1025 end = strchr(s, '\0');
1028 * XXX ia64 gcc isn't smart enough to know that ARRAY_SIZE
1029 * will never be 0 in this case.
1033 while ((p = strsep(&s, ",.")) != NULL) {
1036 for (i = 0; i < ARRAY_SIZE(options); i++) {
1038 n = strlen(options[i].name);
1039 if (strncmp(options[i].name, p, n) == 0)
1042 if (i == ARRAY_SIZE(options))
1045 if (strncmp(p, "global_tag_depth", n) == 0) {
1046 ahd_linux_setup_tag_info_global(p + n);
1047 } else if (strncmp(p, "tag_info", n) == 0) {
1048 s = ahd_parse_brace_option("tag_info", p + n, end,
1049 2, ahd_linux_setup_tag_info, 0);
1050 } else if (strncmp(p, "slewrate", n) == 0) {
1051 s = ahd_parse_brace_option("slewrate",
1052 p + n, end, 1, ahd_linux_setup_iocell_info,
1053 AIC79XX_SLEWRATE_INDEX);
1054 } else if (strncmp(p, "precomp", n) == 0) {
1055 s = ahd_parse_brace_option("precomp",
1056 p + n, end, 1, ahd_linux_setup_iocell_info,
1057 AIC79XX_PRECOMP_INDEX);
1058 } else if (strncmp(p, "amplitude", n) == 0) {
1059 s = ahd_parse_brace_option("amplitude",
1060 p + n, end, 1, ahd_linux_setup_iocell_info,
1061 AIC79XX_AMPLITUDE_INDEX);
1062 } else if (p[n] == ':') {
1063 *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
1064 } else if (!strncmp(p, "verbose", n)) {
1065 *(options[i].flag) = 1;
1067 *(options[i].flag) ^= 0xFFFFFFFF;
1073 __setup("aic79xx=", aic79xx_setup);
1075 uint32_t aic79xx_verbose;
1078 ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template)
1081 struct Scsi_Host *host;
1086 template->name = ahd->description;
1087 host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
1091 *((struct ahd_softc **)host->hostdata) = ahd;
1092 ahd->platform_data->host = host;
1093 host->can_queue = AHD_MAX_QUEUE;
1094 host->cmd_per_lun = 2;
1095 host->sg_tablesize = AHD_NSEG;
1096 host->this_id = ahd->our_id;
1097 host->irq = ahd->platform_data->irq;
1098 host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8;
1099 host->max_lun = AHD_NUM_LUNS;
1100 host->max_channel = 0;
1101 host->sg_tablesize = AHD_NSEG;
1103 ahd_set_unit(ahd, ahd_linux_unit++);
1104 ahd_unlock(ahd, &s);
1105 sprintf(buf, "scsi%d", host->host_no);
1106 new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
1107 if (new_name != NULL) {
1108 strcpy(new_name, buf);
1109 ahd_set_name(ahd, new_name);
1111 host->unique_id = ahd->unit;
1112 ahd_linux_initialize_scsi_bus(ahd);
1113 ahd_intr_enable(ahd, TRUE);
1115 host->transportt = ahd_linux_transport_template;
1117 retval = scsi_add_host(host, &ahd->dev_softc->dev);
1119 printk(KERN_WARNING "aic79xx: scsi_add_host failed\n");
1120 scsi_host_put(host);
1124 scsi_scan_host(host);
1129 * Place the SCSI bus into a known state by either resetting it,
1130 * or forcing transfer negotiations on the next command to any
1134 ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
1143 if (aic79xx_no_reset != 0)
1144 ahd->flags &= ~AHD_RESET_BUS_A;
1146 if ((ahd->flags & AHD_RESET_BUS_A) != 0)
1147 ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE);
1149 numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
1154 * Force negotiation to async for all targets that
1155 * will not see an initial bus reset.
1157 for (; target_id < numtarg; target_id++) {
1158 struct ahd_devinfo devinfo;
1159 struct ahd_initiator_tinfo *tinfo;
1160 struct ahd_tmode_tstate *tstate;
1162 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1163 target_id, &tstate);
1164 ahd_compile_devinfo(&devinfo, ahd->our_id, target_id,
1165 CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR);
1166 ahd_update_neg_request(ahd, &devinfo, tstate,
1167 tinfo, AHD_NEG_ALWAYS);
1169 ahd_unlock(ahd, &s);
1170 /* Give the bus some time to recover */
1171 if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
1172 ahd_freeze_simq(ahd);
1173 msleep(AIC79XX_RESET_DELAY);
1174 ahd_release_simq(ahd);
1179 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1181 ahd->platform_data =
1182 malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT);
1183 if (ahd->platform_data == NULL)
1185 memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data));
1186 ahd->platform_data->irq = AHD_LINUX_NOIRQ;
1188 ahd->seltime = (aic79xx_seltime & 0x3) << 4;
1193 ahd_platform_free(struct ahd_softc *ahd)
1195 struct scsi_target *starget;
1198 if (ahd->platform_data != NULL) {
1199 /* destroy all of the device and target objects */
1200 for (i = 0; i < AHD_NUM_TARGETS; i++) {
1201 starget = ahd->platform_data->starget[i];
1202 if (starget != NULL) {
1203 ahd->platform_data->starget[i] = NULL;
1207 if (ahd->platform_data->irq != AHD_LINUX_NOIRQ)
1208 free_irq(ahd->platform_data->irq, ahd);
1209 if (ahd->tags[0] == BUS_SPACE_PIO
1210 && ahd->bshs[0].ioport != 0)
1211 release_region(ahd->bshs[0].ioport, 256);
1212 if (ahd->tags[1] == BUS_SPACE_PIO
1213 && ahd->bshs[1].ioport != 0)
1214 release_region(ahd->bshs[1].ioport, 256);
1215 if (ahd->tags[0] == BUS_SPACE_MEMIO
1216 && ahd->bshs[0].maddr != NULL) {
1217 iounmap(ahd->bshs[0].maddr);
1218 release_mem_region(ahd->platform_data->mem_busaddr,
1221 if (ahd->platform_data->host)
1222 scsi_host_put(ahd->platform_data->host);
1224 free(ahd->platform_data, M_DEVBUF);
1229 ahd_platform_init(struct ahd_softc *ahd)
1232 * Lookup and commit any modified IO Cell options.
1234 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
1235 struct ahd_linux_iocell_opts *iocell_opts;
1237 iocell_opts = &aic79xx_iocell_info[ahd->unit];
1238 if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP)
1239 AHD_SET_PRECOMP(ahd, iocell_opts->precomp);
1240 if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE)
1241 AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate);
1242 if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE)
1243 AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude);
1249 ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
1251 ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
1252 SCB_GET_CHANNEL(ahd, scb),
1253 SCB_GET_LUN(scb), SCB_LIST_NULL,
1254 ROLE_UNKNOWN, CAM_REQUEUE_REQ);
1258 ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
1259 struct ahd_devinfo *devinfo, ahd_queue_alg alg)
1261 struct ahd_linux_device *dev;
1268 dev = scsi_transport_device_data(sdev);
1272 was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED);
1275 case AHD_QUEUE_NONE:
1278 case AHD_QUEUE_BASIC:
1279 now_queuing = AHD_DEV_Q_BASIC;
1281 case AHD_QUEUE_TAGGED:
1282 now_queuing = AHD_DEV_Q_TAGGED;
1285 if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0
1286 && (was_queuing != now_queuing)
1287 && (dev->active != 0)) {
1288 dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY;
1292 dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG);
1296 usertags = ahd_linux_user_tagdepth(ahd, devinfo);
1299 * Start out agressively and allow our
1300 * dynamic queue depth algorithm to take
1303 dev->maxtags = usertags;
1304 dev->openings = dev->maxtags - dev->active;
1306 if (dev->maxtags == 0) {
1308 * Queueing is disabled by the user.
1311 } else if (alg == AHD_QUEUE_TAGGED) {
1312 dev->flags |= AHD_DEV_Q_TAGGED;
1313 if (aic79xx_periodic_otag != 0)
1314 dev->flags |= AHD_DEV_PERIODIC_OTAG;
1316 dev->flags |= AHD_DEV_Q_BASIC;
1318 /* We can only have one opening. */
1320 dev->openings = 1 - dev->active;
1323 switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
1324 case AHD_DEV_Q_BASIC:
1325 scsi_set_tag_type(sdev, MSG_SIMPLE_TASK);
1326 scsi_activate_tcq(sdev, dev->openings + dev->active);
1328 case AHD_DEV_Q_TAGGED:
1329 scsi_set_tag_type(sdev, MSG_ORDERED_TASK);
1330 scsi_activate_tcq(sdev, dev->openings + dev->active);
1334 * We allow the OS to queue 2 untagged transactions to
1335 * us at any time even though we can only execute them
1336 * serially on the controller/device. This should
1337 * remove some latency.
1339 scsi_deactivate_tcq(sdev, 1);
1345 ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel,
1346 int lun, u_int tag, role_t role, uint32_t status)
1352 ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
1354 static int warned_user;
1358 if ((ahd->user_discenable & devinfo->target_mask) != 0) {
1359 if (ahd->unit >= ARRAY_SIZE(aic79xx_tag_info)) {
1361 if (warned_user == 0) {
1363 "aic79xx: WARNING: Insufficient tag_info instances\n"
1364 "aic79xx: for installed controllers. Using defaults\n"
1365 "aic79xx: Please update the aic79xx_tag_info array in\n"
1366 "aic79xx: the aic79xx_osm.c source file.\n");
1369 tags = AHD_MAX_QUEUE;
1371 adapter_tag_info_t *tag_info;
1373 tag_info = &aic79xx_tag_info[ahd->unit];
1374 tags = tag_info->tag_commands[devinfo->target_offset];
1375 if (tags > AHD_MAX_QUEUE)
1376 tags = AHD_MAX_QUEUE;
1383 * Determines the queue depth for a given device.
1386 ahd_linux_device_queue_depth(struct scsi_device *sdev)
1388 struct ahd_devinfo devinfo;
1390 struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata);
1392 ahd_compile_devinfo(&devinfo,
1394 sdev->sdev_target->id, sdev->lun,
1395 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1397 tags = ahd_linux_user_tagdepth(ahd, &devinfo);
1398 if (tags != 0 && sdev->tagged_supported != 0) {
1400 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_TAGGED);
1401 ahd_send_async(ahd, devinfo.channel, devinfo.target,
1402 devinfo.lun, AC_TRANSFER_NEG);
1403 ahd_print_devinfo(ahd, &devinfo);
1404 printf("Tagged Queuing enabled. Depth %d\n", tags);
1406 ahd_platform_set_tags(ahd, sdev, &devinfo, AHD_QUEUE_NONE);
1407 ahd_send_async(ahd, devinfo.channel, devinfo.target,
1408 devinfo.lun, AC_TRANSFER_NEG);
1413 ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
1414 struct scsi_cmnd *cmd)
1417 struct hardware_scb *hscb;
1418 struct ahd_initiator_tinfo *tinfo;
1419 struct ahd_tmode_tstate *tstate;
1422 unsigned long flags;
1424 ahd_lock(ahd, &flags);
1427 * Get an scb to use.
1429 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1430 cmd->device->id, &tstate);
1431 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
1432 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1433 col_idx = AHD_NEVER_COL_IDX;
1435 col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
1438 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
1439 ahd->flags |= AHD_RESOURCE_SHORTAGE;
1440 ahd_unlock(ahd, &flags);
1441 return SCSI_MLQUEUE_HOST_BUSY;
1445 scb->platform_data->dev = dev;
1447 cmd->host_scribble = (char *)scb;
1450 * Fill out basics of the HSCB.
1453 hscb->scsiid = BUILD_SCSIID(ahd, cmd);
1454 hscb->lun = cmd->device->lun;
1455 scb->hscb->task_management = 0;
1456 mask = SCB_GET_TARGET_MASK(ahd, scb);
1458 if ((ahd->user_discenable & mask) != 0)
1459 hscb->control |= DISCENB;
1461 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
1462 scb->flags |= SCB_PACKETIZED;
1464 if ((tstate->auto_negotiate & mask) != 0) {
1465 scb->flags |= SCB_AUTO_NEGOTIATE;
1466 scb->hscb->control |= MK_MESSAGE;
1469 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
1471 uint8_t tag_msgs[2];
1473 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
1474 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
1475 hscb->control |= tag_msgs[0];
1476 if (tag_msgs[0] == MSG_ORDERED_TASK)
1477 dev->commands_since_idle_or_otag = 0;
1479 if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
1480 && (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
1481 hscb->control |= MSG_ORDERED_TASK;
1482 dev->commands_since_idle_or_otag = 0;
1484 hscb->control |= MSG_SIMPLE_TASK;
1488 hscb->cdb_len = cmd->cmd_len;
1489 memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
1491 scb->platform_data->xfer_len = 0;
1492 ahd_set_residual(scb, 0);
1493 ahd_set_sense_residual(scb, 0);
1495 if (cmd->use_sg != 0) {
1497 struct scatterlist *cur_seg;
1501 cur_seg = (struct scatterlist *)cmd->request_buffer;
1502 dir = cmd->sc_data_direction;
1503 nseg = pci_map_sg(ahd->dev_softc, cur_seg,
1505 scb->platform_data->xfer_len = 0;
1506 for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) {
1510 addr = sg_dma_address(cur_seg);
1511 len = sg_dma_len(cur_seg);
1512 scb->platform_data->xfer_len += len;
1513 sg = ahd_sg_setup(ahd, scb, sg, addr, len,
1516 } else if (cmd->request_bufflen != 0) {
1522 dir = cmd->sc_data_direction;
1523 addr = pci_map_single(ahd->dev_softc,
1524 cmd->request_buffer,
1525 cmd->request_bufflen, dir);
1526 scb->platform_data->xfer_len = cmd->request_bufflen;
1527 scb->platform_data->buf_busaddr = addr;
1528 sg = ahd_sg_setup(ahd, scb, sg, addr,
1529 cmd->request_bufflen, /*last*/TRUE);
1532 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1535 dev->commands_issued++;
1537 if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
1538 dev->commands_since_idle_or_otag++;
1539 scb->flags |= SCB_ACTIVE;
1540 ahd_queue_scb(ahd, scb);
1542 ahd_unlock(ahd, &flags);
1548 * SCSI controller interrupt handler.
1551 ahd_linux_isr(int irq, void *dev_id)
1553 struct ahd_softc *ahd;
1557 ahd = (struct ahd_softc *) dev_id;
1558 ahd_lock(ahd, &flags);
1559 ours = ahd_intr(ahd);
1560 ahd_unlock(ahd, &flags);
1561 return IRQ_RETVAL(ours);
1565 ahd_send_async(struct ahd_softc *ahd, char channel,
1566 u_int target, u_int lun, ac_code code)
1569 case AC_TRANSFER_NEG:
1572 struct scsi_target *starget;
1573 struct info_str info;
1574 struct ahd_initiator_tinfo *tinfo;
1575 struct ahd_tmode_tstate *tstate;
1576 unsigned int target_ppr_options;
1578 BUG_ON(target == CAM_TARGET_WILDCARD);
1581 info.length = sizeof(buf);
1584 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
1588 * Don't bother reporting results while
1589 * negotiations are still pending.
1591 if (tinfo->curr.period != tinfo->goal.period
1592 || tinfo->curr.width != tinfo->goal.width
1593 || tinfo->curr.offset != tinfo->goal.offset
1594 || tinfo->curr.ppr_options != tinfo->goal.ppr_options)
1595 if (bootverbose == 0)
1599 * Don't bother reporting results that
1600 * are identical to those last reported.
1602 starget = ahd->platform_data->starget[target];
1603 if (starget == NULL)
1606 target_ppr_options =
1607 (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0)
1608 + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0)
1609 + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0)
1610 + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0)
1611 + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0)
1612 + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0)
1613 + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0)
1614 + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0);
1616 if (tinfo->curr.period == spi_period(starget)
1617 && tinfo->curr.width == spi_width(starget)
1618 && tinfo->curr.offset == spi_offset(starget)
1619 && tinfo->curr.ppr_options == target_ppr_options)
1620 if (bootverbose == 0)
1623 spi_period(starget) = tinfo->curr.period;
1624 spi_width(starget) = tinfo->curr.width;
1625 spi_offset(starget) = tinfo->curr.offset;
1626 spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
1627 spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
1628 spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
1629 spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0;
1630 spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0;
1631 spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0;
1632 spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0;
1633 spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0;
1634 spi_display_xfer_agreement(starget);
1639 WARN_ON(lun != CAM_LUN_WILDCARD);
1640 scsi_report_device_reset(ahd->platform_data->host,
1641 channel - 'A', target);
1645 if (ahd->platform_data->host != NULL) {
1646 scsi_report_bus_reset(ahd->platform_data->host,
1651 panic("ahd_send_async: Unexpected async event");
1656 * Calls the higher level scsi done function and frees the scb.
1659 ahd_done(struct ahd_softc *ahd, struct scb *scb)
1661 struct scsi_cmnd *cmd;
1662 struct ahd_linux_device *dev;
1664 if ((scb->flags & SCB_ACTIVE) == 0) {
1665 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb));
1666 ahd_dump_card_state(ahd);
1667 panic("Stopping for safety");
1669 LIST_REMOVE(scb, pending_links);
1671 dev = scb->platform_data->dev;
1674 if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) {
1675 cmd->result &= ~(CAM_DEV_QFRZN << 16);
1678 ahd_linux_unmap_scb(ahd, scb);
1681 * Guard against stale sense data.
1682 * The Linux mid-layer assumes that sense
1683 * was retrieved anytime the first byte of
1684 * the sense buffer looks "sane".
1686 cmd->sense_buffer[0] = 0;
1687 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
1688 uint32_t amount_xferred;
1691 ahd_get_transfer_length(scb) - ahd_get_residual(scb);
1692 if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
1694 if ((ahd_debug & AHD_SHOW_MISC) != 0) {
1695 ahd_print_path(ahd, scb);
1696 printf("Set CAM_UNCOR_PARITY\n");
1699 ahd_set_transaction_status(scb, CAM_UNCOR_PARITY);
1700 #ifdef AHD_REPORT_UNDERFLOWS
1702 * This code is disabled by default as some
1703 * clients of the SCSI system do not properly
1704 * initialize the underflow parameter. This
1705 * results in spurious termination of commands
1706 * that complete as expected (e.g. underflow is
1707 * allowed as command can return variable amounts
1710 } else if (amount_xferred < scb->io_ctx->underflow) {
1713 ahd_print_path(ahd, scb);
1715 for (i = 0; i < scb->io_ctx->cmd_len; i++)
1716 printf(" 0x%x", scb->io_ctx->cmnd[i]);
1718 ahd_print_path(ahd, scb);
1719 printf("Saw underflow (%ld of %ld bytes). "
1720 "Treated as error\n",
1721 ahd_get_residual(scb),
1722 ahd_get_transfer_length(scb));
1723 ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
1726 ahd_set_transaction_status(scb, CAM_REQ_CMP);
1728 } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
1729 ahd_linux_handle_scsi_status(ahd, cmd->device, scb);
1732 if (dev->openings == 1
1733 && ahd_get_transaction_status(scb) == CAM_REQ_CMP
1734 && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL)
1735 dev->tag_success_count++;
1737 * Some devices deal with temporary internal resource
1738 * shortages by returning queue full. When the queue
1739 * full occurrs, we throttle back. Slowly try to get
1740 * back to our previous queue depth.
1742 if ((dev->openings + dev->active) < dev->maxtags
1743 && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) {
1744 dev->tag_success_count = 0;
1748 if (dev->active == 0)
1749 dev->commands_since_idle_or_otag = 0;
1751 if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
1752 printf("Recovery SCB completes\n");
1753 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
1754 || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
1755 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
1757 if (ahd->platform_data->eh_done)
1758 complete(ahd->platform_data->eh_done);
1761 ahd_free_scb(ahd, scb);
1762 ahd_linux_queue_cmd_complete(ahd, cmd);
1766 ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
1767 struct scsi_device *sdev, struct scb *scb)
1769 struct ahd_devinfo devinfo;
1770 struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
1772 ahd_compile_devinfo(&devinfo,
1774 sdev->sdev_target->id, sdev->lun,
1775 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1779 * We don't currently trust the mid-layer to
1780 * properly deal with queue full or busy. So,
1781 * when one occurs, we tell the mid-layer to
1782 * unconditionally requeue the command to us
1783 * so that we can retry it ourselves. We also
1784 * implement our own throttling mechanism so
1785 * we don't clobber the device with too many
1788 switch (ahd_get_scsi_status(scb)) {
1791 case SCSI_STATUS_CHECK_COND:
1792 case SCSI_STATUS_CMD_TERMINATED:
1794 struct scsi_cmnd *cmd;
1797 * Copy sense information to the OS's cmd
1798 * structure if it is available.
1801 if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) {
1802 struct scsi_status_iu_header *siu;
1806 if (scb->flags & SCB_SENSE) {
1807 sense_size = min(sizeof(struct scsi_sense_data)
1808 - ahd_get_sense_residual(scb),
1809 (u_long)sizeof(cmd->sense_buffer));
1813 * Copy only the sense data into the provided
1816 siu = (struct scsi_status_iu_header *)
1818 sense_size = min_t(size_t,
1819 scsi_4btoul(siu->sense_length),
1820 sizeof(cmd->sense_buffer));
1821 sense_offset = SIU_SENSE_OFFSET(siu);
1824 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
1825 memcpy(cmd->sense_buffer,
1826 ahd_get_sense_buf(ahd, scb)
1827 + sense_offset, sense_size);
1828 cmd->result |= (DRIVER_SENSE << 24);
1831 if (ahd_debug & AHD_SHOW_SENSE) {
1834 printf("Copied %d bytes of sense data at %d:",
1835 sense_size, sense_offset);
1836 for (i = 0; i < sense_size; i++) {
1839 printf("0x%x ", cmd->sense_buffer[i]);
1847 case SCSI_STATUS_QUEUE_FULL:
1849 * By the time the core driver has returned this
1850 * command, all other commands that were queued
1851 * to us but not the device have been returned.
1852 * This ensures that dev->active is equal to
1853 * the number of commands actually queued to
1856 dev->tag_success_count = 0;
1857 if (dev->active != 0) {
1859 * Drop our opening count to the number
1860 * of commands currently outstanding.
1864 if ((ahd_debug & AHD_SHOW_QFULL) != 0) {
1865 ahd_print_path(ahd, scb);
1866 printf("Dropping tag count to %d\n",
1870 if (dev->active == dev->tags_on_last_queuefull) {
1872 dev->last_queuefull_same_count++;
1874 * If we repeatedly see a queue full
1875 * at the same queue depth, this
1876 * device has a fixed number of tag
1877 * slots. Lock in this tag depth
1878 * so we stop seeing queue fulls from
1881 if (dev->last_queuefull_same_count
1882 == AHD_LOCK_TAGS_COUNT) {
1883 dev->maxtags = dev->active;
1884 ahd_print_path(ahd, scb);
1885 printf("Locking max tag count at %d\n",
1889 dev->tags_on_last_queuefull = dev->active;
1890 dev->last_queuefull_same_count = 0;
1892 ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
1893 ahd_set_scsi_status(scb, SCSI_STATUS_OK);
1894 ahd_platform_set_tags(ahd, sdev, &devinfo,
1895 (dev->flags & AHD_DEV_Q_BASIC)
1896 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
1900 * Drop down to a single opening, and treat this
1901 * as if the target returned BUSY SCSI status.
1904 ahd_platform_set_tags(ahd, sdev, &devinfo,
1905 (dev->flags & AHD_DEV_Q_BASIC)
1906 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
1907 ahd_set_scsi_status(scb, SCSI_STATUS_BUSY);
1912 ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
1915 int new_status = DID_OK;
1916 int do_fallback = 0;
1920 * Map CAM error codes into Linux Error codes. We
1921 * avoid the conversion so that the DV code has the
1922 * full error information available when making
1923 * state change decisions.
1926 status = ahd_cmd_get_transaction_status(cmd);
1928 case CAM_REQ_INPROG:
1930 new_status = DID_OK;
1932 case CAM_AUTOSENSE_FAIL:
1933 new_status = DID_ERROR;
1935 case CAM_SCSI_STATUS_ERROR:
1936 scsi_status = ahd_cmd_get_scsi_status(cmd);
1938 switch(scsi_status) {
1939 case SCSI_STATUS_CMD_TERMINATED:
1940 case SCSI_STATUS_CHECK_COND:
1941 if ((cmd->result >> 24) != DRIVER_SENSE) {
1944 struct scsi_sense_data *sense;
1946 sense = (struct scsi_sense_data *)
1948 if (sense->extra_len >= 5 &&
1949 (sense->add_sense_code == 0x47
1950 || sense->add_sense_code == 0x48))
1958 case CAM_REQ_ABORTED:
1959 new_status = DID_ABORT;
1962 new_status = DID_BUS_BUSY;
1964 case CAM_REQ_INVALID:
1965 case CAM_PATH_INVALID:
1966 new_status = DID_BAD_TARGET;
1968 case CAM_SEL_TIMEOUT:
1969 new_status = DID_NO_CONNECT;
1971 case CAM_SCSI_BUS_RESET:
1973 new_status = DID_RESET;
1975 case CAM_UNCOR_PARITY:
1976 new_status = DID_PARITY;
1979 case CAM_CMD_TIMEOUT:
1980 new_status = DID_TIME_OUT;
1983 case CAM_REQ_CMP_ERR:
1984 case CAM_UNEXP_BUSFREE:
1985 case CAM_DATA_RUN_ERR:
1986 new_status = DID_ERROR;
1991 case CAM_SEQUENCE_FAIL:
1992 case CAM_CCB_LEN_ERR:
1993 case CAM_PROVIDE_FAIL:
1994 case CAM_REQ_TERMIO:
1995 case CAM_UNREC_HBA_ERROR:
1996 case CAM_REQ_TOO_BIG:
1997 new_status = DID_ERROR;
1999 case CAM_REQUEUE_REQ:
2000 new_status = DID_REQUEUE;
2003 /* We should never get here */
2004 new_status = DID_ERROR;
2009 printf("%s: device overrun (status %x) on %d:%d:%d\n",
2010 ahd_name(ahd), status, cmd->device->channel,
2011 cmd->device->id, cmd->device->lun);
2014 ahd_cmd_set_transaction_status(cmd, new_status);
2016 cmd->scsi_done(cmd);
2020 ahd_freeze_simq(struct ahd_softc *ahd)
2022 scsi_block_requests(ahd->platform_data->host);
2026 ahd_release_simq(struct ahd_softc *ahd)
2028 scsi_unblock_requests(ahd->platform_data->host);
2032 ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd)
2034 struct ahd_softc *ahd;
2035 struct ahd_linux_device *dev;
2036 struct scb *pending_scb;
2038 u_int active_scbptr;
2047 ahd_mode_state saved_modes;
2048 unsigned long flags;
2053 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
2055 scmd_printk(KERN_INFO, cmd,
2056 "Attempting to queue an ABORT message:");
2059 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
2060 printf(" 0x%x", cmd->cmnd[cdb_byte]);
2063 ahd_lock(ahd, &flags);
2066 * First determine if we currently own this command.
2067 * Start by searching the device queue. If not found
2068 * there, check the pending_scb list. If not found
2069 * at all, and the system wanted us to just abort the
2070 * command, return success.
2072 dev = scsi_transport_device_data(cmd->device);
2076 * No target device for this command exists,
2077 * so we must not still own the command.
2079 scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
2085 * See if we can find a matching cmd in the pending list.
2087 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
2088 if (pending_scb->io_ctx == cmd)
2092 if (pending_scb == NULL) {
2093 scmd_printk(KERN_INFO, cmd, "Command not found\n");
2097 if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
2099 * We can't queue two recovery actions using the same SCB
2106 * Ensure that the card doesn't do anything
2107 * behind our back. Also make sure that we
2108 * didn't "just" miss an interrupt that would
2111 was_paused = ahd_is_paused(ahd);
2112 ahd_pause_and_flushwork(ahd);
2115 if ((pending_scb->flags & SCB_ACTIVE) == 0) {
2116 scmd_printk(KERN_INFO, cmd, "Command already completed\n");
2120 printf("%s: At time of recovery, card was %spaused\n",
2121 ahd_name(ahd), was_paused ? "" : "not ");
2122 ahd_dump_card_state(ahd);
2124 disconnected = TRUE;
2125 if (ahd_search_qinfifo(ahd, cmd->device->id,
2126 cmd->device->channel + 'A',
2128 pending_scb->hscb->tag,
2129 ROLE_INITIATOR, CAM_REQ_ABORTED,
2130 SEARCH_COMPLETE) > 0) {
2131 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2132 ahd_name(ahd), cmd->device->channel,
2133 cmd->device->id, cmd->device->lun);
2138 saved_modes = ahd_save_modes(ahd);
2139 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
2140 last_phase = ahd_inb(ahd, LASTPHASE);
2141 saved_scbptr = ahd_get_scbptr(ahd);
2142 active_scbptr = saved_scbptr;
2143 if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
2144 struct scb *bus_scb;
2146 bus_scb = ahd_lookup_scb(ahd, active_scbptr);
2147 if (bus_scb == pending_scb)
2148 disconnected = FALSE;
2152 * At this point, pending_scb is the scb associated with the
2153 * passed in command. That command is currently active on the
2154 * bus or is in the disconnected state.
2156 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
2157 if (last_phase != P_BUSFREE
2158 && SCB_GET_TAG(pending_scb) == active_scbptr) {
2161 * We're active on the bus, so assert ATN
2162 * and hope that the target responds.
2164 pending_scb = ahd_lookup_scb(ahd, active_scbptr);
2165 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
2166 ahd_outb(ahd, MSG_OUT, HOST_MSG);
2167 ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
2168 scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n");
2170 } else if (disconnected) {
2173 * Actually re-queue this SCB in an attempt
2174 * to select the device before it reconnects.
2176 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
2177 ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
2178 pending_scb->hscb->cdb_len = 0;
2179 pending_scb->hscb->task_attribute = 0;
2180 pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
2182 if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
2184 * Mark the SCB has having an outstanding
2185 * task management function. Should the command
2186 * complete normally before the task management
2187 * function can be sent, the host will be notified
2188 * to abort our requeued SCB.
2190 ahd_outb(ahd, SCB_TASK_MANAGEMENT,
2191 pending_scb->hscb->task_management);
2194 * If non-packetized, set the MK_MESSAGE control
2195 * bit indicating that we desire to send a message.
2196 * We also set the disconnected flag since there is
2197 * no guarantee that our SCB control byte matches
2198 * the version on the card. We don't want the
2199 * sequencer to abort the command thinking an
2200 * unsolicited reselection occurred.
2202 pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
2205 * The sequencer will never re-reference the
2206 * in-core SCB. To make sure we are notified
2207 * during reslection, set the MK_MESSAGE flag in
2208 * the card's copy of the SCB.
2210 ahd_outb(ahd, SCB_CONTROL,
2211 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
2215 * Clear out any entries in the QINFIFO first
2216 * so we are the next SCB for this target
2219 ahd_search_qinfifo(ahd, cmd->device->id,
2220 cmd->device->channel + 'A', cmd->device->lun,
2221 SCB_LIST_NULL, ROLE_INITIATOR,
2222 CAM_REQUEUE_REQ, SEARCH_COMPLETE);
2223 ahd_qinfifo_requeue_tail(ahd, pending_scb);
2224 ahd_set_scbptr(ahd, saved_scbptr);
2225 ahd_print_path(ahd, pending_scb);
2226 printf("Device is disconnected, re-queuing SCB\n");
2229 scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n");
2236 * Our assumption is that if we don't have the command, no
2237 * recovery action was required, so we return success. Again,
2238 * the semantics of the mid-layer recovery engine are not
2239 * well defined, so this may change in time.
2246 DECLARE_COMPLETION_ONSTACK(done);
2248 ahd->platform_data->eh_done = &done;
2249 ahd_unlock(ahd, &flags);
2251 printf("%s: Recovery code sleeping\n", ahd_name(ahd));
2252 if (!wait_for_completion_timeout(&done, 5 * HZ)) {
2253 ahd_lock(ahd, &flags);
2254 ahd->platform_data->eh_done = NULL;
2255 ahd_unlock(ahd, &flags);
2256 printf("%s: Timer Expired (active %d)\n",
2257 ahd_name(ahd), dev->active);
2260 printf("Recovery code awake\n");
2262 ahd_unlock(ahd, &flags);
2264 if (retval != SUCCESS)
2265 printf("%s: Command abort returning 0x%x\n",
2266 ahd_name(ahd), retval);
2271 static void ahd_linux_set_width(struct scsi_target *starget, int width)
2273 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2274 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2275 struct ahd_devinfo devinfo;
2276 unsigned long flags;
2278 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2279 starget->channel + 'A', ROLE_INITIATOR);
2280 ahd_lock(ahd, &flags);
2281 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE);
2282 ahd_unlock(ahd, &flags);
2285 static void ahd_linux_set_period(struct scsi_target *starget, int period)
2287 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2288 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2289 struct ahd_tmode_tstate *tstate;
2290 struct ahd_initiator_tinfo *tinfo
2291 = ahd_fetch_transinfo(ahd,
2292 starget->channel + 'A',
2293 shost->this_id, starget->id, &tstate);
2294 struct ahd_devinfo devinfo;
2295 unsigned int ppr_options = tinfo->goal.ppr_options;
2297 unsigned long flags;
2298 unsigned long offset = tinfo->goal.offset;
2301 if ((ahd_debug & AHD_SHOW_DV) != 0)
2302 printf("%s: set period to %d\n", ahd_name(ahd), period);
2305 offset = MAX_OFFSET;
2310 ppr_options |= MSG_EXT_PPR_DT_REQ;
2312 ppr_options |= MSG_EXT_PPR_IU_REQ;
2315 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2317 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2318 starget->channel + 'A', ROLE_INITIATOR);
2320 /* all PPR requests apart from QAS require wide transfers */
2321 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
2322 if (spi_width(starget) == 0)
2323 ppr_options &= MSG_EXT_PPR_QAS_REQ;
2326 ahd_find_syncrate(ahd, &period, &ppr_options,
2327 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2329 ahd_lock(ahd, &flags);
2330 ahd_set_syncrate(ahd, &devinfo, period, offset,
2331 ppr_options, AHD_TRANS_GOAL, FALSE);
2332 ahd_unlock(ahd, &flags);
2335 static void ahd_linux_set_offset(struct scsi_target *starget, int offset)
2337 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2338 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2339 struct ahd_tmode_tstate *tstate;
2340 struct ahd_initiator_tinfo *tinfo
2341 = ahd_fetch_transinfo(ahd,
2342 starget->channel + 'A',
2343 shost->this_id, starget->id, &tstate);
2344 struct ahd_devinfo devinfo;
2345 unsigned int ppr_options = 0;
2346 unsigned int period = 0;
2347 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2348 unsigned long flags;
2351 if ((ahd_debug & AHD_SHOW_DV) != 0)
2352 printf("%s: set offset to %d\n", ahd_name(ahd), offset);
2355 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2356 starget->channel + 'A', ROLE_INITIATOR);
2358 period = tinfo->goal.period;
2359 ppr_options = tinfo->goal.ppr_options;
2360 ahd_find_syncrate(ahd, &period, &ppr_options,
2361 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2364 ahd_lock(ahd, &flags);
2365 ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
2366 AHD_TRANS_GOAL, FALSE);
2367 ahd_unlock(ahd, &flags);
2370 static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
2372 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2373 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2374 struct ahd_tmode_tstate *tstate;
2375 struct ahd_initiator_tinfo *tinfo
2376 = ahd_fetch_transinfo(ahd,
2377 starget->channel + 'A',
2378 shost->this_id, starget->id, &tstate);
2379 struct ahd_devinfo devinfo;
2380 unsigned int ppr_options = tinfo->goal.ppr_options
2381 & ~MSG_EXT_PPR_DT_REQ;
2382 unsigned int period = tinfo->goal.period;
2383 unsigned int width = tinfo->goal.width;
2384 unsigned long flags;
2387 if ((ahd_debug & AHD_SHOW_DV) != 0)
2388 printf("%s: %s DT\n", ahd_name(ahd),
2389 dt ? "enabling" : "disabling");
2392 ppr_options |= MSG_EXT_PPR_DT_REQ;
2394 ahd_linux_set_width(starget, 1);
2397 period = 10; /* If resetting DT, period must be >= 25ns */
2398 /* IU is invalid without DT set */
2399 ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2401 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2402 starget->channel + 'A', ROLE_INITIATOR);
2403 ahd_find_syncrate(ahd, &period, &ppr_options,
2404 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2406 ahd_lock(ahd, &flags);
2407 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2408 ppr_options, AHD_TRANS_GOAL, FALSE);
2409 ahd_unlock(ahd, &flags);
2412 static void ahd_linux_set_qas(struct scsi_target *starget, int qas)
2414 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2415 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2416 struct ahd_tmode_tstate *tstate;
2417 struct ahd_initiator_tinfo *tinfo
2418 = ahd_fetch_transinfo(ahd,
2419 starget->channel + 'A',
2420 shost->this_id, starget->id, &tstate);
2421 struct ahd_devinfo devinfo;
2422 unsigned int ppr_options = tinfo->goal.ppr_options
2423 & ~MSG_EXT_PPR_QAS_REQ;
2424 unsigned int period = tinfo->goal.period;
2426 unsigned long flags;
2429 if ((ahd_debug & AHD_SHOW_DV) != 0)
2430 printf("%s: %s QAS\n", ahd_name(ahd),
2431 qas ? "enabling" : "disabling");
2435 ppr_options |= MSG_EXT_PPR_QAS_REQ;
2438 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2440 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2441 starget->channel + 'A', ROLE_INITIATOR);
2442 ahd_find_syncrate(ahd, &period, &ppr_options,
2443 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2445 ahd_lock(ahd, &flags);
2446 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2447 ppr_options, AHD_TRANS_GOAL, FALSE);
2448 ahd_unlock(ahd, &flags);
2451 static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
2453 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2454 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2455 struct ahd_tmode_tstate *tstate;
2456 struct ahd_initiator_tinfo *tinfo
2457 = ahd_fetch_transinfo(ahd,
2458 starget->channel + 'A',
2459 shost->this_id, starget->id, &tstate);
2460 struct ahd_devinfo devinfo;
2461 unsigned int ppr_options = tinfo->goal.ppr_options
2462 & ~MSG_EXT_PPR_IU_REQ;
2463 unsigned int period = tinfo->goal.period;
2465 unsigned long flags;
2468 if ((ahd_debug & AHD_SHOW_DV) != 0)
2469 printf("%s: %s IU\n", ahd_name(ahd),
2470 iu ? "enabling" : "disabling");
2474 ppr_options |= MSG_EXT_PPR_IU_REQ;
2475 ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
2478 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2480 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2481 starget->channel + 'A', ROLE_INITIATOR);
2482 ahd_find_syncrate(ahd, &period, &ppr_options,
2483 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2485 ahd_lock(ahd, &flags);
2486 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2487 ppr_options, AHD_TRANS_GOAL, FALSE);
2488 ahd_unlock(ahd, &flags);
2491 static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
2493 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2494 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2495 struct ahd_tmode_tstate *tstate;
2496 struct ahd_initiator_tinfo *tinfo
2497 = ahd_fetch_transinfo(ahd,
2498 starget->channel + 'A',
2499 shost->this_id, starget->id, &tstate);
2500 struct ahd_devinfo devinfo;
2501 unsigned int ppr_options = tinfo->goal.ppr_options
2502 & ~MSG_EXT_PPR_RD_STRM;
2503 unsigned int period = tinfo->goal.period;
2504 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2505 unsigned long flags;
2508 if ((ahd_debug & AHD_SHOW_DV) != 0)
2509 printf("%s: %s Read Streaming\n", ahd_name(ahd),
2510 rdstrm ? "enabling" : "disabling");
2514 ppr_options |= MSG_EXT_PPR_RD_STRM;
2516 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2517 starget->channel + 'A', ROLE_INITIATOR);
2518 ahd_find_syncrate(ahd, &period, &ppr_options,
2519 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2521 ahd_lock(ahd, &flags);
2522 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2523 ppr_options, AHD_TRANS_GOAL, FALSE);
2524 ahd_unlock(ahd, &flags);
2527 static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
2529 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2530 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2531 struct ahd_tmode_tstate *tstate;
2532 struct ahd_initiator_tinfo *tinfo
2533 = ahd_fetch_transinfo(ahd,
2534 starget->channel + 'A',
2535 shost->this_id, starget->id, &tstate);
2536 struct ahd_devinfo devinfo;
2537 unsigned int ppr_options = tinfo->goal.ppr_options
2538 & ~MSG_EXT_PPR_WR_FLOW;
2539 unsigned int period = tinfo->goal.period;
2540 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2541 unsigned long flags;
2544 if ((ahd_debug & AHD_SHOW_DV) != 0)
2545 printf("%s: %s Write Flow Control\n", ahd_name(ahd),
2546 wrflow ? "enabling" : "disabling");
2550 ppr_options |= MSG_EXT_PPR_WR_FLOW;
2552 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2553 starget->channel + 'A', ROLE_INITIATOR);
2554 ahd_find_syncrate(ahd, &period, &ppr_options,
2555 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2557 ahd_lock(ahd, &flags);
2558 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2559 ppr_options, AHD_TRANS_GOAL, FALSE);
2560 ahd_unlock(ahd, &flags);
2563 static void ahd_linux_set_rti(struct scsi_target *starget, int rti)
2565 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2566 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2567 struct ahd_tmode_tstate *tstate;
2568 struct ahd_initiator_tinfo *tinfo
2569 = ahd_fetch_transinfo(ahd,
2570 starget->channel + 'A',
2571 shost->this_id, starget->id, &tstate);
2572 struct ahd_devinfo devinfo;
2573 unsigned int ppr_options = tinfo->goal.ppr_options
2575 unsigned int period = tinfo->goal.period;
2576 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2577 unsigned long flags;
2579 if ((ahd->features & AHD_RTI) == 0) {
2581 if ((ahd_debug & AHD_SHOW_DV) != 0)
2582 printf("%s: RTI not available\n", ahd_name(ahd));
2588 if ((ahd_debug & AHD_SHOW_DV) != 0)
2589 printf("%s: %s RTI\n", ahd_name(ahd),
2590 rti ? "enabling" : "disabling");
2594 ppr_options |= MSG_EXT_PPR_RTI;
2596 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2597 starget->channel + 'A', ROLE_INITIATOR);
2598 ahd_find_syncrate(ahd, &period, &ppr_options,
2599 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2601 ahd_lock(ahd, &flags);
2602 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2603 ppr_options, AHD_TRANS_GOAL, FALSE);
2604 ahd_unlock(ahd, &flags);
2607 static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
2609 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2610 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2611 struct ahd_tmode_tstate *tstate;
2612 struct ahd_initiator_tinfo *tinfo
2613 = ahd_fetch_transinfo(ahd,
2614 starget->channel + 'A',
2615 shost->this_id, starget->id, &tstate);
2616 struct ahd_devinfo devinfo;
2617 unsigned int ppr_options = tinfo->goal.ppr_options
2618 & ~MSG_EXT_PPR_PCOMP_EN;
2619 unsigned int period = tinfo->goal.period;
2620 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2621 unsigned long flags;
2624 if ((ahd_debug & AHD_SHOW_DV) != 0)
2625 printf("%s: %s Precompensation\n", ahd_name(ahd),
2626 pcomp ? "Enable" : "Disable");
2632 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
2633 struct ahd_linux_iocell_opts *iocell_opts;
2635 iocell_opts = &aic79xx_iocell_info[ahd->unit];
2636 precomp = iocell_opts->precomp;
2638 precomp = AIC79XX_DEFAULT_PRECOMP;
2640 ppr_options |= MSG_EXT_PPR_PCOMP_EN;
2641 AHD_SET_PRECOMP(ahd, precomp);
2643 AHD_SET_PRECOMP(ahd, 0);
2646 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2647 starget->channel + 'A', ROLE_INITIATOR);
2648 ahd_find_syncrate(ahd, &period, &ppr_options,
2649 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2651 ahd_lock(ahd, &flags);
2652 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2653 ppr_options, AHD_TRANS_GOAL, FALSE);
2654 ahd_unlock(ahd, &flags);
2657 static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
2659 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2660 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2661 struct ahd_tmode_tstate *tstate;
2662 struct ahd_initiator_tinfo *tinfo
2663 = ahd_fetch_transinfo(ahd,
2664 starget->channel + 'A',
2665 shost->this_id, starget->id, &tstate);
2666 struct ahd_devinfo devinfo;
2667 unsigned int ppr_options = tinfo->goal.ppr_options
2668 & ~MSG_EXT_PPR_HOLD_MCS;
2669 unsigned int period = tinfo->goal.period;
2670 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2671 unsigned long flags;
2674 ppr_options |= MSG_EXT_PPR_HOLD_MCS;
2676 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2677 starget->channel + 'A', ROLE_INITIATOR);
2678 ahd_find_syncrate(ahd, &period, &ppr_options,
2679 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2681 ahd_lock(ahd, &flags);
2682 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2683 ppr_options, AHD_TRANS_GOAL, FALSE);
2684 ahd_unlock(ahd, &flags);
2687 static void ahd_linux_get_signalling(struct Scsi_Host *shost)
2689 struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata;
2690 unsigned long flags;
2693 ahd_lock(ahd, &flags);
2695 mode = ahd_inb(ahd, SBLKCTL);
2697 ahd_unlock(ahd, &flags);
2700 spi_signalling(shost) = SPI_SIGNAL_LVD;
2701 else if (mode & ENAB20)
2702 spi_signalling(shost) = SPI_SIGNAL_SE;
2704 spi_signalling(shost) = SPI_SIGNAL_UNKNOWN;
2707 static struct spi_function_template ahd_linux_transport_functions = {
2708 .set_offset = ahd_linux_set_offset,
2710 .set_period = ahd_linux_set_period,
2712 .set_width = ahd_linux_set_width,
2714 .set_dt = ahd_linux_set_dt,
2716 .set_iu = ahd_linux_set_iu,
2718 .set_qas = ahd_linux_set_qas,
2720 .set_rd_strm = ahd_linux_set_rd_strm,
2722 .set_wr_flow = ahd_linux_set_wr_flow,
2724 .set_rti = ahd_linux_set_rti,
2726 .set_pcomp_en = ahd_linux_set_pcomp_en,
2728 .set_hold_mcs = ahd_linux_set_hold_mcs,
2730 .get_signalling = ahd_linux_get_signalling,
2734 ahd_linux_init(void)
2739 * If we've been passed any parameters, process them now.
2742 aic79xx_setup(aic79xx);
2744 ahd_linux_transport_template =
2745 spi_attach_transport(&ahd_linux_transport_functions);
2746 if (!ahd_linux_transport_template)
2749 scsi_transport_reserve_device(ahd_linux_transport_template,
2750 sizeof(struct ahd_linux_device));
2752 error = ahd_linux_pci_init();
2754 spi_release_transport(ahd_linux_transport_template);
2759 ahd_linux_exit(void)
2761 ahd_linux_pci_exit();
2762 spi_release_transport(ahd_linux_transport_template);
2765 module_init(ahd_linux_init);
2766 module_exit(ahd_linux_exit);