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 * Certain PCI motherboards will scan PCI devices from highest to lowest,
247 * others scan from lowest to highest, and they tend to do all kinds of
248 * strange things when they come into contact with PCI bridge chips. The
249 * net result of all this is that the PCI card that is actually used to boot
250 * the machine is very hard to detect. Most motherboards go from lowest
251 * PCI slot number to highest, and the first SCSI controller found is the
252 * one you boot from. The only exceptions to this are when a controller
253 * has its BIOS disabled. So, we by default sort all of our SCSI controllers
254 * from lowest PCI slot number to highest PCI slot number. We also force
255 * all controllers with their BIOS disabled to the end of the list. This
256 * works on *almost* all computers. Where it doesn't work, we have this
257 * option. Setting this option to non-0 will reverse the order of the sort
258 * to highest first, then lowest, but will still leave cards with their BIOS
259 * disabled at the very end. That should fix everyone up unless there are
260 * really strange cirumstances.
262 static uint32_t aic79xx_reverse_scan;
265 * Should we force EXTENDED translation on a controller.
266 * 0 == Use whatever is in the SEEPROM or default to off
267 * 1 == Use whatever is in the SEEPROM or default to on
269 static uint32_t aic79xx_extended;
272 * PCI bus parity checking of the Adaptec controllers. This is somewhat
273 * dubious at best. To my knowledge, this option has never actually
274 * solved a PCI parity problem, but on certain machines with broken PCI
275 * chipset configurations, it can generate tons of false error messages.
276 * It's included in the driver for completeness.
277 * 0 = Shut off PCI parity check
278 * non-0 = Enable PCI parity check
280 * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
281 * variable to -1 you would actually want to simply pass the variable
282 * name without a number. That will invert the 0 which will result in
285 static uint32_t aic79xx_pci_parity = ~0;
288 * There are lots of broken chipsets in the world. Some of them will
289 * violate the PCI spec when we issue byte sized memory writes to our
290 * controller. I/O mapped register access, if allowed by the given
291 * platform, will work in almost all cases.
293 uint32_t aic79xx_allow_memio = ~0;
296 * So that we can set how long each device is given as a selection timeout.
297 * The table of values goes like this:
302 * We default to 256ms because some older devices need a longer time
303 * to respond to initial selection.
305 static uint32_t aic79xx_seltime;
308 * Certain devices do not perform any aging on commands. Should the
309 * device be saturated by commands in one portion of the disk, it is
310 * possible for transactions on far away sectors to never be serviced.
311 * To handle these devices, we can periodically send an ordered tag to
312 * force all outstanding transactions to be serviced prior to a new
315 uint32_t aic79xx_periodic_otag;
317 /* Some storage boxes are using an LSI chip which has a bug making it
318 * impossible to use aic79xx Rev B chip in 320 speeds. The following
319 * storage boxes have been reported to be buggy:
320 * EonStor 3U 16-Bay: U16U-G3A3
321 * EonStor 2U 12-Bay: U12U-G3A3
322 * SentinelRAID: 2500F R5 / R6
323 * SentinelRAID: 2500F R1
324 * SentinelRAID: 2500F/1500F
327 * To get around this LSI bug, you can set your board to 160 mode
328 * or you can enable the SLOWCRC bit.
330 uint32_t aic79xx_slowcrc;
333 * Module information and settable options.
335 static char *aic79xx = NULL;
337 MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
338 MODULE_DESCRIPTION("Adaptec Aic790X U320 SCSI Host Bus Adapter driver");
339 MODULE_LICENSE("Dual BSD/GPL");
340 MODULE_VERSION(AIC79XX_DRIVER_VERSION);
341 module_param(aic79xx, charp, 0444);
342 MODULE_PARM_DESC(aic79xx,
343 "period delimited, options string.\n"
344 " verbose Enable verbose/diagnostic logging\n"
345 " allow_memio Allow device registers to be memory mapped\n"
346 " debug Bitmask of debug values to enable\n"
347 " no_reset Supress initial bus resets\n"
348 " extended Enable extended geometry on all controllers\n"
349 " periodic_otag Send an ordered tagged transaction\n"
350 " periodically to prevent tag starvation.\n"
351 " This may be required by some older disk\n"
352 " or drives/RAID arrays.\n"
353 " reverse_scan Sort PCI devices highest Bus/Slot to lowest\n"
354 " tag_info:<tag_str> Set per-target tag depth\n"
355 " global_tag_depth:<int> Global tag depth for all targets on all buses\n"
356 " slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
357 " precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
358 " amplitude:<int> Set the signal amplitude (0-7).\n"
359 " seltime:<int> Selection Timeout:\n"
360 " (0/256ms,1/128ms,2/64ms,3/32ms)\n"
361 " slowcrc Turn on the SLOWCRC bit (Rev B only)\n"
363 " Sample /etc/modprobe.conf line:\n"
364 " Enable verbose logging\n"
365 " Set tag depth on Controller 2/Target 2 to 10 tags\n"
366 " Shorten the selection timeout to 128ms\n"
368 " options aic79xx 'aic79xx=verbose.tag_info:{{}.{}.{..10}}.seltime:1'\n"
371 static void ahd_linux_handle_scsi_status(struct ahd_softc *,
372 struct scsi_device *,
374 static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd,
375 struct scsi_cmnd *cmd);
376 static int ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd);
377 static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd);
378 static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd,
379 struct ahd_devinfo *devinfo);
380 static void ahd_linux_device_queue_depth(struct scsi_device *);
381 static int ahd_linux_run_command(struct ahd_softc*,
382 struct ahd_linux_device *,
384 static void ahd_linux_setup_tag_info_global(char *p);
385 static int aic79xx_setup(char *c);
387 static int ahd_linux_unit;
390 /****************************** Inlines ***************************************/
391 static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
394 ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
396 struct scsi_cmnd *cmd;
400 direction = cmd->sc_data_direction;
401 ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE);
402 if (cmd->use_sg != 0) {
403 struct scatterlist *sg;
405 sg = (struct scatterlist *)cmd->request_buffer;
406 pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction);
407 } else if (cmd->request_bufflen != 0) {
408 pci_unmap_single(ahd->dev_softc,
409 scb->platform_data->buf_busaddr,
410 cmd->request_bufflen, direction);
414 /******************************** Macros **************************************/
415 #define BUILD_SCSIID(ahd, cmd) \
416 (((scmd_id(cmd) << TID_SHIFT) & TID) | (ahd)->our_id)
419 * Return a string describing the driver.
422 ahd_linux_info(struct Scsi_Host *host)
424 static char buffer[512];
427 struct ahd_softc *ahd;
430 ahd = *(struct ahd_softc **)host->hostdata;
431 memset(bp, 0, sizeof(buffer));
432 strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
433 strcat(bp, AIC79XX_DRIVER_VERSION);
436 strcat(bp, ahd->description);
439 ahd_controller_info(ahd, ahd_info);
440 strcat(bp, ahd_info);
447 * Queue an SCB to the controller.
450 ahd_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
452 struct ahd_softc *ahd;
453 struct ahd_linux_device *dev = scsi_transport_device_data(cmd->device);
454 int rtn = SCSI_MLQUEUE_HOST_BUSY;
456 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
458 cmd->scsi_done = scsi_done;
459 cmd->result = CAM_REQ_INPROG << 16;
460 rtn = ahd_linux_run_command(ahd, dev, cmd);
465 static inline struct scsi_target **
466 ahd_linux_target_in_softc(struct scsi_target *starget)
468 struct ahd_softc *ahd =
469 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
470 unsigned int target_offset;
472 target_offset = starget->id;
473 if (starget->channel != 0)
476 return &ahd->platform_data->starget[target_offset];
480 ahd_linux_target_alloc(struct scsi_target *starget)
482 struct ahd_softc *ahd =
483 *((struct ahd_softc **)dev_to_shost(&starget->dev)->hostdata);
484 struct seeprom_config *sc = ahd->seep_config;
486 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
487 struct ahd_linux_target *targ = scsi_transport_target_data(starget);
488 struct ahd_devinfo devinfo;
489 struct ahd_initiator_tinfo *tinfo;
490 struct ahd_tmode_tstate *tstate;
491 char channel = starget->channel + 'A';
493 ahd_lock(ahd, &flags);
495 BUG_ON(*ahd_targp != NULL);
497 *ahd_targp = starget;
498 memset(targ, 0, sizeof(*targ));
501 int flags = sc->device_flags[starget->id];
503 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
504 starget->id, &tstate);
506 if ((flags & CFPACKETIZED) == 0) {
507 /* Do not negotiate packetized transfers */
508 spi_rd_strm(starget) = 0;
509 spi_pcomp_en(starget) = 0;
510 spi_rti(starget) = 0;
511 spi_wr_flow(starget) = 0;
512 spi_hold_mcs(starget) = 0;
514 if ((ahd->features & AHD_RTI) == 0)
515 spi_rti(starget) = 0;
518 if ((flags & CFQAS) == 0)
519 spi_qas(starget) = 0;
521 /* Transinfo values have been set to BIOS settings */
522 spi_max_width(starget) = (flags & CFWIDEB) ? 1 : 0;
523 spi_min_period(starget) = tinfo->user.period;
524 spi_max_offset(starget) = tinfo->user.offset;
527 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
528 starget->id, &tstate);
529 ahd_compile_devinfo(&devinfo, ahd->our_id, starget->id,
530 CAM_LUN_WILDCARD, channel,
532 ahd_set_syncrate(ahd, &devinfo, 0, 0, 0,
533 AHD_TRANS_GOAL, /*paused*/FALSE);
534 ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
535 AHD_TRANS_GOAL, /*paused*/FALSE);
536 ahd_unlock(ahd, &flags);
542 ahd_linux_target_destroy(struct scsi_target *starget)
544 struct scsi_target **ahd_targp = ahd_linux_target_in_softc(starget);
550 ahd_linux_slave_alloc(struct scsi_device *sdev)
552 struct ahd_softc *ahd =
553 *((struct ahd_softc **)sdev->host->hostdata);
554 struct scsi_target *starget = sdev->sdev_target;
555 struct ahd_linux_target *targ = scsi_transport_target_data(starget);
556 struct ahd_linux_device *dev;
559 printf("%s: Slave Alloc %d\n", ahd_name(ahd), sdev->id);
561 BUG_ON(targ->sdev[sdev->lun] != NULL);
563 dev = scsi_transport_device_data(sdev);
564 memset(dev, 0, sizeof(*dev));
567 * We start out life using untagged
568 * transactions of which we allow one.
573 * Set maxtags to 0. This will be changed if we
574 * later determine that we are dealing with
575 * a tagged queuing capable device.
579 targ->sdev[sdev->lun] = sdev;
585 ahd_linux_slave_configure(struct scsi_device *sdev)
587 struct ahd_softc *ahd;
589 ahd = *((struct ahd_softc **)sdev->host->hostdata);
591 sdev_printk(KERN_INFO, sdev, "Slave Configure\n");
593 ahd_linux_device_queue_depth(sdev);
595 /* Initial Domain Validation */
596 if (!spi_initial_dv(sdev->sdev_target))
603 ahd_linux_slave_destroy(struct scsi_device *sdev)
605 struct ahd_softc *ahd;
606 struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
607 struct ahd_linux_target *targ = scsi_transport_target_data(sdev->sdev_target);
609 ahd = *((struct ahd_softc **)sdev->host->hostdata);
611 printf("%s: Slave Destroy %d\n", ahd_name(ahd), sdev->id);
615 targ->sdev[sdev->lun] = NULL;
619 #if defined(__i386__)
621 * Return the disk geometry for the given SCSI device.
624 ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
625 sector_t capacity, int geom[])
633 struct ahd_softc *ahd;
635 ahd = *((struct ahd_softc **)sdev->host->hostdata);
637 bh = scsi_bios_ptable(bdev);
639 ret = scsi_partsize(bh, capacity,
640 &geom[2], &geom[0], &geom[1]);
647 cylinders = aic_sector_div(capacity, heads, sectors);
649 if (aic79xx_extended != 0)
652 extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0;
653 if (extended && cylinders >= 1024) {
656 cylinders = aic_sector_div(capacity, heads, sectors);
666 * Abort the current SCSI command(s).
669 ahd_linux_abort(struct scsi_cmnd *cmd)
673 error = ahd_linux_queue_abort_cmd(cmd);
679 * Attempt to send a target reset message to the device that timed out.
682 ahd_linux_dev_reset(struct scsi_cmnd *cmd)
684 struct ahd_softc *ahd;
685 struct ahd_linux_device *dev;
686 struct scb *reset_scb;
688 int retval = SUCCESS;
691 struct ahd_initiator_tinfo *tinfo;
692 struct ahd_tmode_tstate *tstate;
694 DECLARE_COMPLETION(done);
699 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
701 scmd_printk(KERN_INFO, cmd,
702 "Attempting to queue a TARGET RESET message:");
705 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
706 printf(" 0x%x", cmd->cmnd[cdb_byte]);
710 * Determine if we currently own this command.
712 dev = scsi_transport_device_data(cmd->device);
716 * No target device for this command exists,
717 * so we must not still own the command.
719 scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
724 * Generate us a new SCB
726 reset_scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX);
728 scmd_printk(KERN_INFO, cmd, "No SCB available\n");
732 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
733 cmd->device->id, &tstate);
734 reset_scb->io_ctx = cmd;
735 reset_scb->platform_data->dev = dev;
736 reset_scb->sg_count = 0;
737 ahd_set_residual(reset_scb, 0);
738 ahd_set_sense_residual(reset_scb, 0);
739 reset_scb->platform_data->xfer_len = 0;
740 reset_scb->hscb->control = 0;
741 reset_scb->hscb->scsiid = BUILD_SCSIID(ahd,cmd);
742 reset_scb->hscb->lun = cmd->device->lun;
743 reset_scb->hscb->cdb_len = 0;
744 reset_scb->hscb->task_management = SIU_TASKMGMT_LUN_RESET;
745 reset_scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE;
746 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
747 reset_scb->flags |= SCB_PACKETIZED;
749 reset_scb->hscb->control |= MK_MESSAGE;
753 dev->commands_issued++;
755 ahd_lock(ahd, &flags);
757 LIST_INSERT_HEAD(&ahd->pending_scbs, reset_scb, pending_links);
758 ahd_queue_scb(ahd, reset_scb);
760 ahd->platform_data->eh_done = &done;
761 ahd_unlock(ahd, &flags);
763 printf("%s: Device reset code sleeping\n", ahd_name(ahd));
764 if (!wait_for_completion_timeout(&done, 5 * HZ)) {
765 ahd_lock(ahd, &flags);
766 ahd->platform_data->eh_done = NULL;
767 ahd_unlock(ahd, &flags);
768 printf("%s: Device reset timer expired (active %d)\n",
769 ahd_name(ahd), dev->active);
772 printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval);
778 * Reset the SCSI bus.
781 ahd_linux_bus_reset(struct scsi_cmnd *cmd)
783 struct ahd_softc *ahd;
786 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
788 if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
789 printf("%s: Bus reset called for cmd %p\n",
792 found = ahd_reset_channel(ahd, scmd_channel(cmd) + 'A',
793 /*initiate reset*/TRUE);
796 printf("%s: SCSI bus reset delivered. "
797 "%d SCBs aborted.\n", ahd_name(ahd), found);
802 struct scsi_host_template aic79xx_driver_template = {
803 .module = THIS_MODULE,
805 .proc_name = "aic79xx",
806 .proc_info = ahd_linux_proc_info,
807 .info = ahd_linux_info,
808 .queuecommand = ahd_linux_queue,
809 .eh_abort_handler = ahd_linux_abort,
810 .eh_device_reset_handler = ahd_linux_dev_reset,
811 .eh_bus_reset_handler = ahd_linux_bus_reset,
812 #if defined(__i386__)
813 .bios_param = ahd_linux_biosparam,
815 .can_queue = AHD_MAX_QUEUE,
818 .use_clustering = ENABLE_CLUSTERING,
819 .slave_alloc = ahd_linux_slave_alloc,
820 .slave_configure = ahd_linux_slave_configure,
821 .slave_destroy = ahd_linux_slave_destroy,
822 .target_alloc = ahd_linux_target_alloc,
823 .target_destroy = ahd_linux_target_destroy,
826 /******************************** Bus DMA *************************************/
828 ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent,
829 bus_size_t alignment, bus_size_t boundary,
830 dma_addr_t lowaddr, dma_addr_t highaddr,
831 bus_dma_filter_t *filter, void *filterarg,
832 bus_size_t maxsize, int nsegments,
833 bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
837 dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT);
842 * Linux is very simplistic about DMA memory. For now don't
843 * maintain all specification information. Once Linux supplies
844 * better facilities for doing these operations, or the
845 * needs of this particular driver change, we might need to do
848 dmat->alignment = alignment;
849 dmat->boundary = boundary;
850 dmat->maxsize = maxsize;
856 ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat)
858 free(dmat, M_DEVBUF);
862 ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr,
863 int flags, bus_dmamap_t *mapp)
865 *vaddr = pci_alloc_consistent(ahd->dev_softc,
866 dmat->maxsize, mapp);
873 ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat,
874 void* vaddr, bus_dmamap_t map)
876 pci_free_consistent(ahd->dev_softc, dmat->maxsize,
881 ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map,
882 void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb,
883 void *cb_arg, int flags)
886 * Assume for now that this will only be used during
887 * initialization and not for per-transaction buffer mapping.
889 bus_dma_segment_t stack_sg;
891 stack_sg.ds_addr = map;
892 stack_sg.ds_len = dmat->maxsize;
893 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
898 ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
903 ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
909 /********************* Platform Dependent Functions ***************************/
911 ahd_linux_setup_iocell_info(u_long index, int instance, int targ, int32_t value)
915 && (instance < NUM_ELEMENTS(aic79xx_iocell_info))) {
916 uint8_t *iocell_info;
918 iocell_info = (uint8_t*)&aic79xx_iocell_info[instance];
919 iocell_info[index] = value & 0xFFFF;
921 printf("iocell[%d:%ld] = %d\n", instance, index, value);
926 ahd_linux_setup_tag_info_global(char *p)
930 tags = simple_strtoul(p + 1, NULL, 0) & 0xff;
931 printf("Setting Global Tags= %d\n", tags);
933 for (i = 0; i < NUM_ELEMENTS(aic79xx_tag_info); i++) {
934 for (j = 0; j < AHD_NUM_TARGETS; j++) {
935 aic79xx_tag_info[i].tag_commands[j] = tags;
941 ahd_linux_setup_tag_info(u_long arg, int instance, int targ, int32_t value)
944 if ((instance >= 0) && (targ >= 0)
945 && (instance < NUM_ELEMENTS(aic79xx_tag_info))
946 && (targ < AHD_NUM_TARGETS)) {
947 aic79xx_tag_info[instance].tag_commands[targ] = value & 0x1FF;
949 printf("tag_info[%d:%d] = %d\n", instance, targ, value);
954 ahd_parse_brace_option(char *opt_name, char *opt_arg, char *end, int depth,
955 void (*callback)(u_long, int, int, int32_t),
964 char tok_list[] = {'.', ',', '{', '}', '\0'};
966 /* All options use a ':' name/arg separator */
974 * Restore separator that may be in
975 * the middle of our option argument.
977 tok_end = strchr(opt_arg, '\0');
983 if (instance == -1) {
990 printf("Malformed Option %s\n",
1000 else if (instance != -1)
1010 else if (instance >= 0)
1019 for (i = 0; tok_list[i]; i++) {
1020 tok_end2 = strchr(opt_arg, tok_list[i]);
1021 if ((tok_end2) && (tok_end2 < tok_end))
1024 callback(callback_arg, instance, targ,
1025 simple_strtol(opt_arg, NULL, 0));
1034 * Handle Linux boot parameters. This routine allows for assigning a value
1035 * to a parameter with a ':' between the parameter and the value.
1036 * ie. aic79xx=stpwlev:1,extended
1039 aic79xx_setup(char *s)
1049 { "extended", &aic79xx_extended },
1050 { "no_reset", &aic79xx_no_reset },
1051 { "verbose", &aic79xx_verbose },
1052 { "allow_memio", &aic79xx_allow_memio},
1054 { "debug", &ahd_debug },
1056 { "reverse_scan", &aic79xx_reverse_scan },
1057 { "periodic_otag", &aic79xx_periodic_otag },
1058 { "pci_parity", &aic79xx_pci_parity },
1059 { "seltime", &aic79xx_seltime },
1060 { "tag_info", NULL },
1061 { "global_tag_depth", NULL},
1062 { "slewrate", NULL },
1063 { "precomp", NULL },
1064 { "amplitude", NULL },
1065 { "slowcrc", &aic79xx_slowcrc },
1068 end = strchr(s, '\0');
1071 * XXX ia64 gcc isn't smart enough to know that NUM_ELEMENTS
1072 * will never be 0 in this case.
1076 while ((p = strsep(&s, ",.")) != NULL) {
1079 for (i = 0; i < NUM_ELEMENTS(options); i++) {
1081 n = strlen(options[i].name);
1082 if (strncmp(options[i].name, p, n) == 0)
1085 if (i == NUM_ELEMENTS(options))
1088 if (strncmp(p, "global_tag_depth", n) == 0) {
1089 ahd_linux_setup_tag_info_global(p + n);
1090 } else if (strncmp(p, "tag_info", n) == 0) {
1091 s = ahd_parse_brace_option("tag_info", p + n, end,
1092 2, ahd_linux_setup_tag_info, 0);
1093 } else if (strncmp(p, "slewrate", n) == 0) {
1094 s = ahd_parse_brace_option("slewrate",
1095 p + n, end, 1, ahd_linux_setup_iocell_info,
1096 AIC79XX_SLEWRATE_INDEX);
1097 } else if (strncmp(p, "precomp", n) == 0) {
1098 s = ahd_parse_brace_option("precomp",
1099 p + n, end, 1, ahd_linux_setup_iocell_info,
1100 AIC79XX_PRECOMP_INDEX);
1101 } else if (strncmp(p, "amplitude", n) == 0) {
1102 s = ahd_parse_brace_option("amplitude",
1103 p + n, end, 1, ahd_linux_setup_iocell_info,
1104 AIC79XX_AMPLITUDE_INDEX);
1105 } else if (p[n] == ':') {
1106 *(options[i].flag) = simple_strtoul(p + n + 1, NULL, 0);
1107 } else if (!strncmp(p, "verbose", n)) {
1108 *(options[i].flag) = 1;
1110 *(options[i].flag) ^= 0xFFFFFFFF;
1116 __setup("aic79xx=", aic79xx_setup);
1118 uint32_t aic79xx_verbose;
1121 ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *template)
1124 struct Scsi_Host *host;
1129 template->name = ahd->description;
1130 host = scsi_host_alloc(template, sizeof(struct ahd_softc *));
1134 *((struct ahd_softc **)host->hostdata) = ahd;
1135 ahd->platform_data->host = host;
1136 host->can_queue = AHD_MAX_QUEUE;
1137 host->cmd_per_lun = 2;
1138 host->sg_tablesize = AHD_NSEG;
1139 host->this_id = ahd->our_id;
1140 host->irq = ahd->platform_data->irq;
1141 host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8;
1142 host->max_lun = AHD_NUM_LUNS;
1143 host->max_channel = 0;
1144 host->sg_tablesize = AHD_NSEG;
1146 ahd_set_unit(ahd, ahd_linux_unit++);
1147 ahd_unlock(ahd, &s);
1148 sprintf(buf, "scsi%d", host->host_no);
1149 new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
1150 if (new_name != NULL) {
1151 strcpy(new_name, buf);
1152 ahd_set_name(ahd, new_name);
1154 host->unique_id = ahd->unit;
1155 ahd_linux_initialize_scsi_bus(ahd);
1156 ahd_intr_enable(ahd, TRUE);
1158 host->transportt = ahd_linux_transport_template;
1160 retval = scsi_add_host(host, &ahd->dev_softc->dev);
1162 printk(KERN_WARNING "aic79xx: scsi_add_host failed\n");
1163 scsi_host_put(host);
1167 scsi_scan_host(host);
1172 ahd_linux_get_memsize(void)
1177 return ((uint64_t)si.totalram << PAGE_SHIFT);
1181 * Place the SCSI bus into a known state by either resetting it,
1182 * or forcing transfer negotiations on the next command to any
1186 ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
1195 if (aic79xx_no_reset != 0)
1196 ahd->flags &= ~AHD_RESET_BUS_A;
1198 if ((ahd->flags & AHD_RESET_BUS_A) != 0)
1199 ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE);
1201 numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
1206 * Force negotiation to async for all targets that
1207 * will not see an initial bus reset.
1209 for (; target_id < numtarg; target_id++) {
1210 struct ahd_devinfo devinfo;
1211 struct ahd_initiator_tinfo *tinfo;
1212 struct ahd_tmode_tstate *tstate;
1214 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1215 target_id, &tstate);
1216 ahd_compile_devinfo(&devinfo, ahd->our_id, target_id,
1217 CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR);
1218 ahd_update_neg_request(ahd, &devinfo, tstate,
1219 tinfo, AHD_NEG_ALWAYS);
1221 ahd_unlock(ahd, &s);
1222 /* Give the bus some time to recover */
1223 if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
1224 ahd_freeze_simq(ahd);
1225 msleep(AIC79XX_RESET_DELAY);
1226 ahd_release_simq(ahd);
1231 ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
1233 ahd->platform_data =
1234 malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT);
1235 if (ahd->platform_data == NULL)
1237 memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data));
1238 ahd->platform_data->irq = AHD_LINUX_NOIRQ;
1240 ahd->seltime = (aic79xx_seltime & 0x3) << 4;
1245 ahd_platform_free(struct ahd_softc *ahd)
1247 struct scsi_target *starget;
1250 if (ahd->platform_data != NULL) {
1251 /* destroy all of the device and target objects */
1252 for (i = 0; i < AHD_NUM_TARGETS; i++) {
1253 starget = ahd->platform_data->starget[i];
1254 if (starget != NULL) {
1255 for (j = 0; j < AHD_NUM_LUNS; j++) {
1256 struct ahd_linux_target *targ =
1257 scsi_transport_target_data(starget);
1258 if (targ->sdev[j] == NULL)
1260 targ->sdev[j] = NULL;
1262 ahd->platform_data->starget[i] = NULL;
1266 if (ahd->platform_data->irq != AHD_LINUX_NOIRQ)
1267 free_irq(ahd->platform_data->irq, ahd);
1268 if (ahd->tags[0] == BUS_SPACE_PIO
1269 && ahd->bshs[0].ioport != 0)
1270 release_region(ahd->bshs[0].ioport, 256);
1271 if (ahd->tags[1] == BUS_SPACE_PIO
1272 && ahd->bshs[1].ioport != 0)
1273 release_region(ahd->bshs[1].ioport, 256);
1274 if (ahd->tags[0] == BUS_SPACE_MEMIO
1275 && ahd->bshs[0].maddr != NULL) {
1276 iounmap(ahd->bshs[0].maddr);
1277 release_mem_region(ahd->platform_data->mem_busaddr,
1280 if (ahd->platform_data->host)
1281 scsi_host_put(ahd->platform_data->host);
1283 free(ahd->platform_data, M_DEVBUF);
1288 ahd_platform_init(struct ahd_softc *ahd)
1291 * Lookup and commit any modified IO Cell options.
1293 if (ahd->unit < NUM_ELEMENTS(aic79xx_iocell_info)) {
1294 struct ahd_linux_iocell_opts *iocell_opts;
1296 iocell_opts = &aic79xx_iocell_info[ahd->unit];
1297 if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP)
1298 AHD_SET_PRECOMP(ahd, iocell_opts->precomp);
1299 if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE)
1300 AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate);
1301 if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE)
1302 AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude);
1308 ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
1310 ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
1311 SCB_GET_CHANNEL(ahd, scb),
1312 SCB_GET_LUN(scb), SCB_LIST_NULL,
1313 ROLE_UNKNOWN, CAM_REQUEUE_REQ);
1317 ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
1320 struct scsi_target *starget;
1321 struct ahd_linux_target *targ;
1322 struct ahd_linux_device *dev;
1323 struct scsi_device *sdev;
1327 starget = ahd->platform_data->starget[devinfo->target];
1328 targ = scsi_transport_target_data(starget);
1329 BUG_ON(targ == NULL);
1330 sdev = targ->sdev[devinfo->lun];
1334 dev = scsi_transport_device_data(sdev);
1338 was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED);
1341 case AHD_QUEUE_NONE:
1344 case AHD_QUEUE_BASIC:
1345 now_queuing = AHD_DEV_Q_BASIC;
1347 case AHD_QUEUE_TAGGED:
1348 now_queuing = AHD_DEV_Q_TAGGED;
1351 if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0
1352 && (was_queuing != now_queuing)
1353 && (dev->active != 0)) {
1354 dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY;
1358 dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG);
1362 usertags = ahd_linux_user_tagdepth(ahd, devinfo);
1365 * Start out agressively and allow our
1366 * dynamic queue depth algorithm to take
1369 dev->maxtags = usertags;
1370 dev->openings = dev->maxtags - dev->active;
1372 if (dev->maxtags == 0) {
1374 * Queueing is disabled by the user.
1377 } else if (alg == AHD_QUEUE_TAGGED) {
1378 dev->flags |= AHD_DEV_Q_TAGGED;
1379 if (aic79xx_periodic_otag != 0)
1380 dev->flags |= AHD_DEV_PERIODIC_OTAG;
1382 dev->flags |= AHD_DEV_Q_BASIC;
1384 /* We can only have one opening. */
1386 dev->openings = 1 - dev->active;
1389 switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
1390 case AHD_DEV_Q_BASIC:
1391 scsi_set_tag_type(sdev, MSG_SIMPLE_TASK);
1392 scsi_activate_tcq(sdev, dev->openings + dev->active);
1394 case AHD_DEV_Q_TAGGED:
1395 scsi_set_tag_type(sdev, MSG_ORDERED_TASK);
1396 scsi_activate_tcq(sdev, dev->openings + dev->active);
1400 * We allow the OS to queue 2 untagged transactions to
1401 * us at any time even though we can only execute them
1402 * serially on the controller/device. This should
1403 * remove some latency.
1405 scsi_deactivate_tcq(sdev, 1);
1411 ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel,
1412 int lun, u_int tag, role_t role, uint32_t status)
1418 ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
1420 static int warned_user;
1424 if ((ahd->user_discenable & devinfo->target_mask) != 0) {
1425 if (ahd->unit >= NUM_ELEMENTS(aic79xx_tag_info)) {
1427 if (warned_user == 0) {
1429 "aic79xx: WARNING: Insufficient tag_info instances\n"
1430 "aic79xx: for installed controllers. Using defaults\n"
1431 "aic79xx: Please update the aic79xx_tag_info array in\n"
1432 "aic79xx: the aic79xx_osm.c source file.\n");
1435 tags = AHD_MAX_QUEUE;
1437 adapter_tag_info_t *tag_info;
1439 tag_info = &aic79xx_tag_info[ahd->unit];
1440 tags = tag_info->tag_commands[devinfo->target_offset];
1441 if (tags > AHD_MAX_QUEUE)
1442 tags = AHD_MAX_QUEUE;
1449 * Determines the queue depth for a given device.
1452 ahd_linux_device_queue_depth(struct scsi_device *sdev)
1454 struct ahd_devinfo devinfo;
1456 struct ahd_softc *ahd = *((struct ahd_softc **)sdev->host->hostdata);
1458 ahd_compile_devinfo(&devinfo,
1460 sdev->sdev_target->id, sdev->lun,
1461 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1463 tags = ahd_linux_user_tagdepth(ahd, &devinfo);
1464 if (tags != 0 && sdev->tagged_supported != 0) {
1466 ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED);
1467 ahd_print_devinfo(ahd, &devinfo);
1468 printf("Tagged Queuing enabled. Depth %d\n", tags);
1470 ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE);
1475 ahd_linux_run_command(struct ahd_softc *ahd, struct ahd_linux_device *dev,
1476 struct scsi_cmnd *cmd)
1479 struct hardware_scb *hscb;
1480 struct ahd_initiator_tinfo *tinfo;
1481 struct ahd_tmode_tstate *tstate;
1484 unsigned long flags;
1486 ahd_lock(ahd, &flags);
1489 * Get an scb to use.
1491 tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
1492 cmd->device->id, &tstate);
1493 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
1494 || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
1495 col_idx = AHD_NEVER_COL_IDX;
1497 col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
1500 if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
1501 ahd->flags |= AHD_RESOURCE_SHORTAGE;
1502 ahd_unlock(ahd, &flags);
1503 return SCSI_MLQUEUE_HOST_BUSY;
1507 scb->platform_data->dev = dev;
1509 cmd->host_scribble = (char *)scb;
1512 * Fill out basics of the HSCB.
1515 hscb->scsiid = BUILD_SCSIID(ahd, cmd);
1516 hscb->lun = cmd->device->lun;
1517 scb->hscb->task_management = 0;
1518 mask = SCB_GET_TARGET_MASK(ahd, scb);
1520 if ((ahd->user_discenable & mask) != 0)
1521 hscb->control |= DISCENB;
1523 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
1524 scb->flags |= SCB_PACKETIZED;
1526 if ((tstate->auto_negotiate & mask) != 0) {
1527 scb->flags |= SCB_AUTO_NEGOTIATE;
1528 scb->hscb->control |= MK_MESSAGE;
1529 } else if (cmd->cmnd[0] == INQUIRY
1530 && (tinfo->curr.offset != 0
1531 || tinfo->curr.width != MSG_EXT_WDTR_BUS_8_BIT
1532 || tinfo->curr.ppr_options != 0)
1533 && (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ)==0) {
1535 * The SCSI spec requires inquiry
1536 * commands to complete without
1537 * reporting unit attention conditions.
1538 * Because of this, an inquiry command
1539 * that occurs just after a device is
1540 * reset will result in a data phase
1541 * with mismatched negotiated rates.
1542 * The core already forces a renegotiation
1543 * for reset events that are visible to
1544 * our controller or that we initiate,
1545 * but a third party device reset or a
1546 * hot-plug insertion can still cause this
1547 * issue. Therefore, we force a re-negotiation
1548 * for every inquiry command unless we
1551 scb->flags |= SCB_NEGOTIATE;
1552 scb->hscb->control |= MK_MESSAGE;
1555 if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
1557 uint8_t tag_msgs[2];
1559 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
1560 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
1561 hscb->control |= tag_msgs[0];
1562 if (tag_msgs[0] == MSG_ORDERED_TASK)
1563 dev->commands_since_idle_or_otag = 0;
1565 if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
1566 && (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
1567 hscb->control |= MSG_ORDERED_TASK;
1568 dev->commands_since_idle_or_otag = 0;
1570 hscb->control |= MSG_SIMPLE_TASK;
1574 hscb->cdb_len = cmd->cmd_len;
1575 memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
1577 scb->platform_data->xfer_len = 0;
1578 ahd_set_residual(scb, 0);
1579 ahd_set_sense_residual(scb, 0);
1581 if (cmd->use_sg != 0) {
1583 struct scatterlist *cur_seg;
1587 cur_seg = (struct scatterlist *)cmd->request_buffer;
1588 dir = cmd->sc_data_direction;
1589 nseg = pci_map_sg(ahd->dev_softc, cur_seg,
1591 scb->platform_data->xfer_len = 0;
1592 for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) {
1596 addr = sg_dma_address(cur_seg);
1597 len = sg_dma_len(cur_seg);
1598 scb->platform_data->xfer_len += len;
1599 sg = ahd_sg_setup(ahd, scb, sg, addr, len,
1602 } else if (cmd->request_bufflen != 0) {
1608 dir = cmd->sc_data_direction;
1609 addr = pci_map_single(ahd->dev_softc,
1610 cmd->request_buffer,
1611 cmd->request_bufflen, dir);
1612 scb->platform_data->xfer_len = cmd->request_bufflen;
1613 scb->platform_data->buf_busaddr = addr;
1614 sg = ahd_sg_setup(ahd, scb, sg, addr,
1615 cmd->request_bufflen, /*last*/TRUE);
1618 LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
1621 dev->commands_issued++;
1623 if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
1624 dev->commands_since_idle_or_otag++;
1625 scb->flags |= SCB_ACTIVE;
1626 ahd_queue_scb(ahd, scb);
1628 ahd_unlock(ahd, &flags);
1634 * SCSI controller interrupt handler.
1637 ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
1639 struct ahd_softc *ahd;
1643 ahd = (struct ahd_softc *) dev_id;
1644 ahd_lock(ahd, &flags);
1645 ours = ahd_intr(ahd);
1646 ahd_unlock(ahd, &flags);
1647 return IRQ_RETVAL(ours);
1651 ahd_send_async(struct ahd_softc *ahd, char channel,
1652 u_int target, u_int lun, ac_code code, void *arg)
1655 case AC_TRANSFER_NEG:
1658 struct scsi_target *starget;
1659 struct info_str info;
1660 struct ahd_initiator_tinfo *tinfo;
1661 struct ahd_tmode_tstate *tstate;
1662 unsigned int target_ppr_options;
1664 BUG_ON(target == CAM_TARGET_WILDCARD);
1667 info.length = sizeof(buf);
1670 tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
1674 * Don't bother reporting results while
1675 * negotiations are still pending.
1677 if (tinfo->curr.period != tinfo->goal.period
1678 || tinfo->curr.width != tinfo->goal.width
1679 || tinfo->curr.offset != tinfo->goal.offset
1680 || tinfo->curr.ppr_options != tinfo->goal.ppr_options)
1681 if (bootverbose == 0)
1685 * Don't bother reporting results that
1686 * are identical to those last reported.
1688 starget = ahd->platform_data->starget[target];
1689 if (starget == NULL)
1692 target_ppr_options =
1693 (spi_dt(starget) ? MSG_EXT_PPR_DT_REQ : 0)
1694 + (spi_qas(starget) ? MSG_EXT_PPR_QAS_REQ : 0)
1695 + (spi_iu(starget) ? MSG_EXT_PPR_IU_REQ : 0)
1696 + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0)
1697 + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0)
1698 + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0)
1699 + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0)
1700 + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0);
1702 if (tinfo->curr.period == spi_period(starget)
1703 && tinfo->curr.width == spi_width(starget)
1704 && tinfo->curr.offset == spi_offset(starget)
1705 && tinfo->curr.ppr_options == target_ppr_options)
1706 if (bootverbose == 0)
1709 spi_period(starget) = tinfo->curr.period;
1710 spi_width(starget) = tinfo->curr.width;
1711 spi_offset(starget) = tinfo->curr.offset;
1712 spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
1713 spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
1714 spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
1715 spi_rd_strm(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RD_STRM ? 1 : 0;
1716 spi_pcomp_en(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0;
1717 spi_rti(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_RTI ? 1 : 0;
1718 spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0;
1719 spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0;
1720 spi_display_xfer_agreement(starget);
1725 WARN_ON(lun != CAM_LUN_WILDCARD);
1726 scsi_report_device_reset(ahd->platform_data->host,
1727 channel - 'A', target);
1731 if (ahd->platform_data->host != NULL) {
1732 scsi_report_bus_reset(ahd->platform_data->host,
1737 panic("ahd_send_async: Unexpected async event");
1742 * Calls the higher level scsi done function and frees the scb.
1745 ahd_done(struct ahd_softc *ahd, struct scb *scb)
1747 struct scsi_cmnd *cmd;
1748 struct ahd_linux_device *dev;
1750 if ((scb->flags & SCB_ACTIVE) == 0) {
1751 printf("SCB %d done'd twice\n", SCB_GET_TAG(scb));
1752 ahd_dump_card_state(ahd);
1753 panic("Stopping for safety");
1755 LIST_REMOVE(scb, pending_links);
1757 dev = scb->platform_data->dev;
1760 if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) {
1761 cmd->result &= ~(CAM_DEV_QFRZN << 16);
1764 ahd_linux_unmap_scb(ahd, scb);
1767 * Guard against stale sense data.
1768 * The Linux mid-layer assumes that sense
1769 * was retrieved anytime the first byte of
1770 * the sense buffer looks "sane".
1772 cmd->sense_buffer[0] = 0;
1773 if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
1774 uint32_t amount_xferred;
1777 ahd_get_transfer_length(scb) - ahd_get_residual(scb);
1778 if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
1780 if ((ahd_debug & AHD_SHOW_MISC) != 0) {
1781 ahd_print_path(ahd, scb);
1782 printf("Set CAM_UNCOR_PARITY\n");
1785 ahd_set_transaction_status(scb, CAM_UNCOR_PARITY);
1786 #ifdef AHD_REPORT_UNDERFLOWS
1788 * This code is disabled by default as some
1789 * clients of the SCSI system do not properly
1790 * initialize the underflow parameter. This
1791 * results in spurious termination of commands
1792 * that complete as expected (e.g. underflow is
1793 * allowed as command can return variable amounts
1796 } else if (amount_xferred < scb->io_ctx->underflow) {
1799 ahd_print_path(ahd, scb);
1801 for (i = 0; i < scb->io_ctx->cmd_len; i++)
1802 printf(" 0x%x", scb->io_ctx->cmnd[i]);
1804 ahd_print_path(ahd, scb);
1805 printf("Saw underflow (%ld of %ld bytes). "
1806 "Treated as error\n",
1807 ahd_get_residual(scb),
1808 ahd_get_transfer_length(scb));
1809 ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
1812 ahd_set_transaction_status(scb, CAM_REQ_CMP);
1814 } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
1815 ahd_linux_handle_scsi_status(ahd, cmd->device, scb);
1818 if (dev->openings == 1
1819 && ahd_get_transaction_status(scb) == CAM_REQ_CMP
1820 && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL)
1821 dev->tag_success_count++;
1823 * Some devices deal with temporary internal resource
1824 * shortages by returning queue full. When the queue
1825 * full occurrs, we throttle back. Slowly try to get
1826 * back to our previous queue depth.
1828 if ((dev->openings + dev->active) < dev->maxtags
1829 && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) {
1830 dev->tag_success_count = 0;
1834 if (dev->active == 0)
1835 dev->commands_since_idle_or_otag = 0;
1837 if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
1838 printf("Recovery SCB completes\n");
1839 if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
1840 || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
1841 ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
1843 if (ahd->platform_data->eh_done)
1844 complete(ahd->platform_data->eh_done);
1847 ahd_free_scb(ahd, scb);
1848 ahd_linux_queue_cmd_complete(ahd, cmd);
1852 ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
1853 struct scsi_device *sdev, struct scb *scb)
1855 struct ahd_devinfo devinfo;
1856 struct ahd_linux_device *dev = scsi_transport_device_data(sdev);
1858 ahd_compile_devinfo(&devinfo,
1860 sdev->sdev_target->id, sdev->lun,
1861 sdev->sdev_target->channel == 0 ? 'A' : 'B',
1865 * We don't currently trust the mid-layer to
1866 * properly deal with queue full or busy. So,
1867 * when one occurs, we tell the mid-layer to
1868 * unconditionally requeue the command to us
1869 * so that we can retry it ourselves. We also
1870 * implement our own throttling mechanism so
1871 * we don't clobber the device with too many
1874 switch (ahd_get_scsi_status(scb)) {
1877 case SCSI_STATUS_CHECK_COND:
1878 case SCSI_STATUS_CMD_TERMINATED:
1880 struct scsi_cmnd *cmd;
1883 * Copy sense information to the OS's cmd
1884 * structure if it is available.
1887 if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) {
1888 struct scsi_status_iu_header *siu;
1892 if (scb->flags & SCB_SENSE) {
1893 sense_size = MIN(sizeof(struct scsi_sense_data)
1894 - ahd_get_sense_residual(scb),
1895 sizeof(cmd->sense_buffer));
1899 * Copy only the sense data into the provided
1902 siu = (struct scsi_status_iu_header *)
1904 sense_size = MIN(scsi_4btoul(siu->sense_length),
1905 sizeof(cmd->sense_buffer));
1906 sense_offset = SIU_SENSE_OFFSET(siu);
1909 memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
1910 memcpy(cmd->sense_buffer,
1911 ahd_get_sense_buf(ahd, scb)
1912 + sense_offset, sense_size);
1913 cmd->result |= (DRIVER_SENSE << 24);
1916 if (ahd_debug & AHD_SHOW_SENSE) {
1919 printf("Copied %d bytes of sense data at %d:",
1920 sense_size, sense_offset);
1921 for (i = 0; i < sense_size; i++) {
1924 printf("0x%x ", cmd->sense_buffer[i]);
1932 case SCSI_STATUS_QUEUE_FULL:
1934 * By the time the core driver has returned this
1935 * command, all other commands that were queued
1936 * to us but not the device have been returned.
1937 * This ensures that dev->active is equal to
1938 * the number of commands actually queued to
1941 dev->tag_success_count = 0;
1942 if (dev->active != 0) {
1944 * Drop our opening count to the number
1945 * of commands currently outstanding.
1949 if ((ahd_debug & AHD_SHOW_QFULL) != 0) {
1950 ahd_print_path(ahd, scb);
1951 printf("Dropping tag count to %d\n",
1955 if (dev->active == dev->tags_on_last_queuefull) {
1957 dev->last_queuefull_same_count++;
1959 * If we repeatedly see a queue full
1960 * at the same queue depth, this
1961 * device has a fixed number of tag
1962 * slots. Lock in this tag depth
1963 * so we stop seeing queue fulls from
1966 if (dev->last_queuefull_same_count
1967 == AHD_LOCK_TAGS_COUNT) {
1968 dev->maxtags = dev->active;
1969 ahd_print_path(ahd, scb);
1970 printf("Locking max tag count at %d\n",
1974 dev->tags_on_last_queuefull = dev->active;
1975 dev->last_queuefull_same_count = 0;
1977 ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
1978 ahd_set_scsi_status(scb, SCSI_STATUS_OK);
1979 ahd_platform_set_tags(ahd, &devinfo,
1980 (dev->flags & AHD_DEV_Q_BASIC)
1981 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
1985 * Drop down to a single opening, and treat this
1986 * as if the target returned BUSY SCSI status.
1989 ahd_platform_set_tags(ahd, &devinfo,
1990 (dev->flags & AHD_DEV_Q_BASIC)
1991 ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
1992 ahd_set_scsi_status(scb, SCSI_STATUS_BUSY);
1997 ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, struct scsi_cmnd *cmd)
2000 int new_status = DID_OK;
2001 int do_fallback = 0;
2005 * Map CAM error codes into Linux Error codes. We
2006 * avoid the conversion so that the DV code has the
2007 * full error information available when making
2008 * state change decisions.
2011 status = ahd_cmd_get_transaction_status(cmd);
2013 case CAM_REQ_INPROG:
2015 new_status = DID_OK;
2017 case CAM_AUTOSENSE_FAIL:
2018 new_status = DID_ERROR;
2020 case CAM_SCSI_STATUS_ERROR:
2021 scsi_status = ahd_cmd_get_scsi_status(cmd);
2023 switch(scsi_status) {
2024 case SCSI_STATUS_CMD_TERMINATED:
2025 case SCSI_STATUS_CHECK_COND:
2026 if ((cmd->result >> 24) != DRIVER_SENSE) {
2029 struct scsi_sense_data *sense;
2031 sense = (struct scsi_sense_data *)
2033 if (sense->extra_len >= 5 &&
2034 (sense->add_sense_code == 0x47
2035 || sense->add_sense_code == 0x48))
2043 case CAM_REQ_ABORTED:
2044 new_status = DID_ABORT;
2047 new_status = DID_BUS_BUSY;
2049 case CAM_REQ_INVALID:
2050 case CAM_PATH_INVALID:
2051 new_status = DID_BAD_TARGET;
2053 case CAM_SEL_TIMEOUT:
2054 new_status = DID_NO_CONNECT;
2056 case CAM_SCSI_BUS_RESET:
2058 new_status = DID_RESET;
2060 case CAM_UNCOR_PARITY:
2061 new_status = DID_PARITY;
2064 case CAM_CMD_TIMEOUT:
2065 new_status = DID_TIME_OUT;
2068 case CAM_REQ_CMP_ERR:
2069 case CAM_UNEXP_BUSFREE:
2070 case CAM_DATA_RUN_ERR:
2071 new_status = DID_ERROR;
2076 case CAM_SEQUENCE_FAIL:
2077 case CAM_CCB_LEN_ERR:
2078 case CAM_PROVIDE_FAIL:
2079 case CAM_REQ_TERMIO:
2080 case CAM_UNREC_HBA_ERROR:
2081 case CAM_REQ_TOO_BIG:
2082 new_status = DID_ERROR;
2084 case CAM_REQUEUE_REQ:
2085 new_status = DID_REQUEUE;
2088 /* We should never get here */
2089 new_status = DID_ERROR;
2094 printf("%s: device overrun (status %x) on %d:%d:%d\n",
2095 ahd_name(ahd), status, cmd->device->channel,
2096 cmd->device->id, cmd->device->lun);
2099 ahd_cmd_set_transaction_status(cmd, new_status);
2101 cmd->scsi_done(cmd);
2105 ahd_freeze_simq(struct ahd_softc *ahd)
2107 scsi_block_requests(ahd->platform_data->host);
2111 ahd_release_simq(struct ahd_softc *ahd)
2113 scsi_unblock_requests(ahd->platform_data->host);
2117 ahd_linux_queue_abort_cmd(struct scsi_cmnd *cmd)
2119 struct ahd_softc *ahd;
2120 struct ahd_linux_device *dev;
2121 struct scb *pending_scb;
2123 u_int active_scbptr;
2132 ahd_mode_state saved_modes;
2133 unsigned long flags;
2138 ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
2140 scmd_printk(KERN_INFO, cmd,
2141 "Attempting to queue an ABORT message:");
2144 for (cdb_byte = 0; cdb_byte < cmd->cmd_len; cdb_byte++)
2145 printf(" 0x%x", cmd->cmnd[cdb_byte]);
2148 ahd_lock(ahd, &flags);
2151 * First determine if we currently own this command.
2152 * Start by searching the device queue. If not found
2153 * there, check the pending_scb list. If not found
2154 * at all, and the system wanted us to just abort the
2155 * command, return success.
2157 dev = scsi_transport_device_data(cmd->device);
2161 * No target device for this command exists,
2162 * so we must not still own the command.
2164 scmd_printk(KERN_INFO, cmd, "Is not an active device\n");
2170 * See if we can find a matching cmd in the pending list.
2172 LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
2173 if (pending_scb->io_ctx == cmd)
2177 if (pending_scb == NULL) {
2178 scmd_printk(KERN_INFO, cmd, "Command not found\n");
2182 if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
2184 * We can't queue two recovery actions using the same SCB
2191 * Ensure that the card doesn't do anything
2192 * behind our back. Also make sure that we
2193 * didn't "just" miss an interrupt that would
2196 was_paused = ahd_is_paused(ahd);
2197 ahd_pause_and_flushwork(ahd);
2200 if ((pending_scb->flags & SCB_ACTIVE) == 0) {
2201 scmd_printk(KERN_INFO, cmd, "Command already completed\n");
2205 printf("%s: At time of recovery, card was %spaused\n",
2206 ahd_name(ahd), was_paused ? "" : "not ");
2207 ahd_dump_card_state(ahd);
2209 disconnected = TRUE;
2210 if (ahd_search_qinfifo(ahd, cmd->device->id,
2211 cmd->device->channel + 'A',
2213 pending_scb->hscb->tag,
2214 ROLE_INITIATOR, CAM_REQ_ABORTED,
2215 SEARCH_COMPLETE) > 0) {
2216 printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
2217 ahd_name(ahd), cmd->device->channel,
2218 cmd->device->id, cmd->device->lun);
2223 saved_modes = ahd_save_modes(ahd);
2224 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
2225 last_phase = ahd_inb(ahd, LASTPHASE);
2226 saved_scbptr = ahd_get_scbptr(ahd);
2227 active_scbptr = saved_scbptr;
2228 if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
2229 struct scb *bus_scb;
2231 bus_scb = ahd_lookup_scb(ahd, active_scbptr);
2232 if (bus_scb == pending_scb)
2233 disconnected = FALSE;
2237 * At this point, pending_scb is the scb associated with the
2238 * passed in command. That command is currently active on the
2239 * bus or is in the disconnected state.
2241 saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
2242 if (last_phase != P_BUSFREE
2243 && SCB_GET_TAG(pending_scb) == active_scbptr) {
2246 * We're active on the bus, so assert ATN
2247 * and hope that the target responds.
2249 pending_scb = ahd_lookup_scb(ahd, active_scbptr);
2250 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
2251 ahd_outb(ahd, MSG_OUT, HOST_MSG);
2252 ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
2253 scmd_printk(KERN_INFO, cmd, "Device is active, asserting ATN\n");
2255 } else if (disconnected) {
2258 * Actually re-queue this SCB in an attempt
2259 * to select the device before it reconnects.
2261 pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
2262 ahd_set_scbptr(ahd, SCB_GET_TAG(pending_scb));
2263 pending_scb->hscb->cdb_len = 0;
2264 pending_scb->hscb->task_attribute = 0;
2265 pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
2267 if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
2269 * Mark the SCB has having an outstanding
2270 * task management function. Should the command
2271 * complete normally before the task management
2272 * function can be sent, the host will be notified
2273 * to abort our requeued SCB.
2275 ahd_outb(ahd, SCB_TASK_MANAGEMENT,
2276 pending_scb->hscb->task_management);
2279 * If non-packetized, set the MK_MESSAGE control
2280 * bit indicating that we desire to send a message.
2281 * We also set the disconnected flag since there is
2282 * no guarantee that our SCB control byte matches
2283 * the version on the card. We don't want the
2284 * sequencer to abort the command thinking an
2285 * unsolicited reselection occurred.
2287 pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
2290 * The sequencer will never re-reference the
2291 * in-core SCB. To make sure we are notified
2292 * during reslection, set the MK_MESSAGE flag in
2293 * the card's copy of the SCB.
2295 ahd_outb(ahd, SCB_CONTROL,
2296 ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
2300 * Clear out any entries in the QINFIFO first
2301 * so we are the next SCB for this target
2304 ahd_search_qinfifo(ahd, cmd->device->id,
2305 cmd->device->channel + 'A', cmd->device->lun,
2306 SCB_LIST_NULL, ROLE_INITIATOR,
2307 CAM_REQUEUE_REQ, SEARCH_COMPLETE);
2308 ahd_qinfifo_requeue_tail(ahd, pending_scb);
2309 ahd_set_scbptr(ahd, saved_scbptr);
2310 ahd_print_path(ahd, pending_scb);
2311 printf("Device is disconnected, re-queuing SCB\n");
2314 scmd_printk(KERN_INFO, cmd, "Unable to deliver message\n");
2321 * Our assumption is that if we don't have the command, no
2322 * recovery action was required, so we return success. Again,
2323 * the semantics of the mid-layer recovery engine are not
2324 * well defined, so this may change in time.
2331 DECLARE_COMPLETION(done);
2333 ahd->platform_data->eh_done = &done;
2334 ahd_unlock(ahd, &flags);
2336 printf("%s: Recovery code sleeping\n", ahd_name(ahd));
2337 if (!wait_for_completion_timeout(&done, 5 * HZ)) {
2338 ahd_lock(ahd, &flags);
2339 ahd->platform_data->eh_done = NULL;
2340 ahd_unlock(ahd, &flags);
2341 printf("%s: Timer Expired (active %d)\n",
2342 ahd_name(ahd), dev->active);
2345 printf("Recovery code awake\n");
2347 ahd_unlock(ahd, &flags);
2349 if (retval != SUCCESS)
2350 printf("%s: Command abort returning 0x%x\n",
2351 ahd_name(ahd), retval);
2356 static void ahd_linux_set_width(struct scsi_target *starget, int width)
2358 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2359 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2360 struct ahd_devinfo devinfo;
2361 unsigned long flags;
2363 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2364 starget->channel + 'A', ROLE_INITIATOR);
2365 ahd_lock(ahd, &flags);
2366 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL, FALSE);
2367 ahd_unlock(ahd, &flags);
2370 static void ahd_linux_set_period(struct scsi_target *starget, int period)
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;
2382 unsigned long flags;
2383 unsigned long offset = tinfo->goal.offset;
2386 if ((ahd_debug & AHD_SHOW_DV) != 0)
2387 printf("%s: set period to %d\n", ahd_name(ahd), period);
2390 offset = MAX_OFFSET;
2395 ppr_options |= MSG_EXT_PPR_DT_REQ;
2397 ppr_options |= MSG_EXT_PPR_IU_REQ;
2400 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2402 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2403 starget->channel + 'A', ROLE_INITIATOR);
2405 /* all PPR requests apart from QAS require wide transfers */
2406 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
2407 if (spi_width(starget) == 0)
2408 ppr_options &= MSG_EXT_PPR_QAS_REQ;
2411 ahd_find_syncrate(ahd, &period, &ppr_options,
2412 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2414 ahd_lock(ahd, &flags);
2415 ahd_set_syncrate(ahd, &devinfo, period, offset,
2416 ppr_options, AHD_TRANS_GOAL, FALSE);
2417 ahd_unlock(ahd, &flags);
2420 static void ahd_linux_set_offset(struct scsi_target *starget, int offset)
2422 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2423 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2424 struct ahd_tmode_tstate *tstate;
2425 struct ahd_initiator_tinfo *tinfo
2426 = ahd_fetch_transinfo(ahd,
2427 starget->channel + 'A',
2428 shost->this_id, starget->id, &tstate);
2429 struct ahd_devinfo devinfo;
2430 unsigned int ppr_options = 0;
2431 unsigned int period = 0;
2432 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2433 unsigned long flags;
2436 if ((ahd_debug & AHD_SHOW_DV) != 0)
2437 printf("%s: set offset to %d\n", ahd_name(ahd), offset);
2440 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2441 starget->channel + 'A', ROLE_INITIATOR);
2443 period = tinfo->goal.period;
2444 ppr_options = tinfo->goal.ppr_options;
2445 ahd_find_syncrate(ahd, &period, &ppr_options,
2446 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2449 ahd_lock(ahd, &flags);
2450 ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
2451 AHD_TRANS_GOAL, FALSE);
2452 ahd_unlock(ahd, &flags);
2455 static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
2457 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2458 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2459 struct ahd_tmode_tstate *tstate;
2460 struct ahd_initiator_tinfo *tinfo
2461 = ahd_fetch_transinfo(ahd,
2462 starget->channel + 'A',
2463 shost->this_id, starget->id, &tstate);
2464 struct ahd_devinfo devinfo;
2465 unsigned int ppr_options = tinfo->goal.ppr_options
2466 & ~MSG_EXT_PPR_DT_REQ;
2467 unsigned int period = tinfo->goal.period;
2468 unsigned int width = tinfo->goal.width;
2469 unsigned long flags;
2472 if ((ahd_debug & AHD_SHOW_DV) != 0)
2473 printf("%s: %s DT\n", ahd_name(ahd),
2474 dt ? "enabling" : "disabling");
2477 ppr_options |= MSG_EXT_PPR_DT_REQ;
2479 ahd_linux_set_width(starget, 1);
2482 period = 10; /* If resetting DT, period must be >= 25ns */
2483 /* IU is invalid without DT set */
2484 ppr_options &= ~MSG_EXT_PPR_IU_REQ;
2486 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2487 starget->channel + 'A', ROLE_INITIATOR);
2488 ahd_find_syncrate(ahd, &period, &ppr_options,
2489 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2491 ahd_lock(ahd, &flags);
2492 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2493 ppr_options, AHD_TRANS_GOAL, FALSE);
2494 ahd_unlock(ahd, &flags);
2497 static void ahd_linux_set_qas(struct scsi_target *starget, int qas)
2499 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2500 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2501 struct ahd_tmode_tstate *tstate;
2502 struct ahd_initiator_tinfo *tinfo
2503 = ahd_fetch_transinfo(ahd,
2504 starget->channel + 'A',
2505 shost->this_id, starget->id, &tstate);
2506 struct ahd_devinfo devinfo;
2507 unsigned int ppr_options = tinfo->goal.ppr_options
2508 & ~MSG_EXT_PPR_QAS_REQ;
2509 unsigned int period = tinfo->goal.period;
2511 unsigned long flags;
2514 if ((ahd_debug & AHD_SHOW_DV) != 0)
2515 printf("%s: %s QAS\n", ahd_name(ahd),
2516 qas ? "enabling" : "disabling");
2520 ppr_options |= MSG_EXT_PPR_QAS_REQ;
2523 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2525 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2526 starget->channel + 'A', ROLE_INITIATOR);
2527 ahd_find_syncrate(ahd, &period, &ppr_options,
2528 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2530 ahd_lock(ahd, &flags);
2531 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2532 ppr_options, AHD_TRANS_GOAL, FALSE);
2533 ahd_unlock(ahd, &flags);
2536 static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
2538 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2539 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2540 struct ahd_tmode_tstate *tstate;
2541 struct ahd_initiator_tinfo *tinfo
2542 = ahd_fetch_transinfo(ahd,
2543 starget->channel + 'A',
2544 shost->this_id, starget->id, &tstate);
2545 struct ahd_devinfo devinfo;
2546 unsigned int ppr_options = tinfo->goal.ppr_options
2547 & ~MSG_EXT_PPR_IU_REQ;
2548 unsigned int period = tinfo->goal.period;
2550 unsigned long flags;
2553 if ((ahd_debug & AHD_SHOW_DV) != 0)
2554 printf("%s: %s IU\n", ahd_name(ahd),
2555 iu ? "enabling" : "disabling");
2559 ppr_options |= MSG_EXT_PPR_IU_REQ;
2560 ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
2563 dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2565 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2566 starget->channel + 'A', ROLE_INITIATOR);
2567 ahd_find_syncrate(ahd, &period, &ppr_options,
2568 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2570 ahd_lock(ahd, &flags);
2571 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2572 ppr_options, AHD_TRANS_GOAL, FALSE);
2573 ahd_unlock(ahd, &flags);
2576 static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
2578 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2579 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2580 struct ahd_tmode_tstate *tstate;
2581 struct ahd_initiator_tinfo *tinfo
2582 = ahd_fetch_transinfo(ahd,
2583 starget->channel + 'A',
2584 shost->this_id, starget->id, &tstate);
2585 struct ahd_devinfo devinfo;
2586 unsigned int ppr_options = tinfo->goal.ppr_options
2587 & ~MSG_EXT_PPR_RD_STRM;
2588 unsigned int period = tinfo->goal.period;
2589 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2590 unsigned long flags;
2593 if ((ahd_debug & AHD_SHOW_DV) != 0)
2594 printf("%s: %s Read Streaming\n", ahd_name(ahd),
2595 rdstrm ? "enabling" : "disabling");
2599 ppr_options |= MSG_EXT_PPR_RD_STRM;
2601 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2602 starget->channel + 'A', ROLE_INITIATOR);
2603 ahd_find_syncrate(ahd, &period, &ppr_options,
2604 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2606 ahd_lock(ahd, &flags);
2607 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2608 ppr_options, AHD_TRANS_GOAL, FALSE);
2609 ahd_unlock(ahd, &flags);
2612 static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
2614 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2615 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2616 struct ahd_tmode_tstate *tstate;
2617 struct ahd_initiator_tinfo *tinfo
2618 = ahd_fetch_transinfo(ahd,
2619 starget->channel + 'A',
2620 shost->this_id, starget->id, &tstate);
2621 struct ahd_devinfo devinfo;
2622 unsigned int ppr_options = tinfo->goal.ppr_options
2623 & ~MSG_EXT_PPR_WR_FLOW;
2624 unsigned int period = tinfo->goal.period;
2625 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2626 unsigned long flags;
2629 if ((ahd_debug & AHD_SHOW_DV) != 0)
2630 printf("%s: %s Write Flow Control\n", ahd_name(ahd),
2631 wrflow ? "enabling" : "disabling");
2635 ppr_options |= MSG_EXT_PPR_WR_FLOW;
2637 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2638 starget->channel + 'A', ROLE_INITIATOR);
2639 ahd_find_syncrate(ahd, &period, &ppr_options,
2640 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2642 ahd_lock(ahd, &flags);
2643 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2644 ppr_options, AHD_TRANS_GOAL, FALSE);
2645 ahd_unlock(ahd, &flags);
2648 static void ahd_linux_set_rti(struct scsi_target *starget, int rti)
2650 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2651 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2652 struct ahd_tmode_tstate *tstate;
2653 struct ahd_initiator_tinfo *tinfo
2654 = ahd_fetch_transinfo(ahd,
2655 starget->channel + 'A',
2656 shost->this_id, starget->id, &tstate);
2657 struct ahd_devinfo devinfo;
2658 unsigned int ppr_options = tinfo->goal.ppr_options
2660 unsigned int period = tinfo->goal.period;
2661 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2662 unsigned long flags;
2664 if ((ahd->features & AHD_RTI) == 0) {
2666 if ((ahd_debug & AHD_SHOW_DV) != 0)
2667 printf("%s: RTI not available\n", ahd_name(ahd));
2673 if ((ahd_debug & AHD_SHOW_DV) != 0)
2674 printf("%s: %s RTI\n", ahd_name(ahd),
2675 rti ? "enabling" : "disabling");
2679 ppr_options |= MSG_EXT_PPR_RTI;
2681 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2682 starget->channel + 'A', ROLE_INITIATOR);
2683 ahd_find_syncrate(ahd, &period, &ppr_options,
2684 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2686 ahd_lock(ahd, &flags);
2687 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2688 ppr_options, AHD_TRANS_GOAL, FALSE);
2689 ahd_unlock(ahd, &flags);
2692 static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
2694 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2695 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2696 struct ahd_tmode_tstate *tstate;
2697 struct ahd_initiator_tinfo *tinfo
2698 = ahd_fetch_transinfo(ahd,
2699 starget->channel + 'A',
2700 shost->this_id, starget->id, &tstate);
2701 struct ahd_devinfo devinfo;
2702 unsigned int ppr_options = tinfo->goal.ppr_options
2703 & ~MSG_EXT_PPR_PCOMP_EN;
2704 unsigned int period = tinfo->goal.period;
2705 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2706 unsigned long flags;
2709 if ((ahd_debug & AHD_SHOW_DV) != 0)
2710 printf("%s: %s Precompensation\n", ahd_name(ahd),
2711 pcomp ? "Enable" : "Disable");
2715 ppr_options |= MSG_EXT_PPR_PCOMP_EN;
2717 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2718 starget->channel + 'A', ROLE_INITIATOR);
2719 ahd_find_syncrate(ahd, &period, &ppr_options,
2720 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2722 ahd_lock(ahd, &flags);
2723 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2724 ppr_options, AHD_TRANS_GOAL, FALSE);
2725 ahd_unlock(ahd, &flags);
2728 static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
2730 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2731 struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
2732 struct ahd_tmode_tstate *tstate;
2733 struct ahd_initiator_tinfo *tinfo
2734 = ahd_fetch_transinfo(ahd,
2735 starget->channel + 'A',
2736 shost->this_id, starget->id, &tstate);
2737 struct ahd_devinfo devinfo;
2738 unsigned int ppr_options = tinfo->goal.ppr_options
2739 & ~MSG_EXT_PPR_HOLD_MCS;
2740 unsigned int period = tinfo->goal.period;
2741 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
2742 unsigned long flags;
2745 ppr_options |= MSG_EXT_PPR_HOLD_MCS;
2747 ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
2748 starget->channel + 'A', ROLE_INITIATOR);
2749 ahd_find_syncrate(ahd, &period, &ppr_options,
2750 dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
2752 ahd_lock(ahd, &flags);
2753 ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
2754 ppr_options, AHD_TRANS_GOAL, FALSE);
2755 ahd_unlock(ahd, &flags);
2760 static struct spi_function_template ahd_linux_transport_functions = {
2761 .set_offset = ahd_linux_set_offset,
2763 .set_period = ahd_linux_set_period,
2765 .set_width = ahd_linux_set_width,
2767 .set_dt = ahd_linux_set_dt,
2769 .set_iu = ahd_linux_set_iu,
2771 .set_qas = ahd_linux_set_qas,
2773 .set_rd_strm = ahd_linux_set_rd_strm,
2775 .set_wr_flow = ahd_linux_set_wr_flow,
2777 .set_rti = ahd_linux_set_rti,
2779 .set_pcomp_en = ahd_linux_set_pcomp_en,
2781 .set_hold_mcs = ahd_linux_set_hold_mcs,
2786 ahd_linux_init(void)
2791 * If we've been passed any parameters, process them now.
2794 aic79xx_setup(aic79xx);
2796 ahd_linux_transport_template =
2797 spi_attach_transport(&ahd_linux_transport_functions);
2798 if (!ahd_linux_transport_template)
2801 scsi_transport_reserve_target(ahd_linux_transport_template,
2802 sizeof(struct ahd_linux_target));
2803 scsi_transport_reserve_device(ahd_linux_transport_template,
2804 sizeof(struct ahd_linux_device));
2806 error = ahd_linux_pci_init();
2808 spi_release_transport(ahd_linux_transport_template);
2813 ahd_linux_exit(void)
2815 ahd_linux_pci_exit();
2816 spi_release_transport(ahd_linux_transport_template);
2819 module_init(ahd_linux_init);
2820 module_exit(ahd_linux_exit);