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Diffstat (limited to 'drivers/scsi/aic7xxx/aic7xxx_osm.c')
-rw-r--r--drivers/scsi/aic7xxx/aic7xxx_osm.c1403
1 files changed, 339 insertions, 1064 deletions
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index d978e4a3e973..c13e56320010 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -134,11 +134,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
134#include "aiclib.c" 134#include "aiclib.c"
135 135
136#include <linux/init.h> /* __setup */ 136#include <linux/init.h> /* __setup */
137
138#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
139#include "sd.h" /* For geometry detection */
140#endif
141
142#include <linux/mm.h> /* For fetching system memory size */ 137#include <linux/mm.h> /* For fetching system memory size */
143#include <linux/blkdev.h> /* For block_size() */ 138#include <linux/blkdev.h> /* For block_size() */
144#include <linux/delay.h> /* For ssleep/msleep */ 139#include <linux/delay.h> /* For ssleep/msleep */
@@ -148,11 +143,6 @@ static struct scsi_transport_template *ahc_linux_transport_template = NULL;
148 */ 143 */
149spinlock_t ahc_list_spinlock; 144spinlock_t ahc_list_spinlock;
150 145
151#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
152/* For dynamic sglist size calculation. */
153u_int ahc_linux_nseg;
154#endif
155
156/* 146/*
157 * Set this to the delay in seconds after SCSI bus reset. 147 * Set this to the delay in seconds after SCSI bus reset.
158 * Note, we honor this only for the initial bus reset. 148 * Note, we honor this only for the initial bus reset.
@@ -436,15 +426,12 @@ static void ahc_linux_handle_scsi_status(struct ahc_softc *,
436 struct ahc_linux_device *, 426 struct ahc_linux_device *,
437 struct scb *); 427 struct scb *);
438static void ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, 428static void ahc_linux_queue_cmd_complete(struct ahc_softc *ahc,
439 Scsi_Cmnd *cmd); 429 struct scsi_cmnd *cmd);
440static void ahc_linux_sem_timeout(u_long arg); 430static void ahc_linux_sem_timeout(u_long arg);
441static void ahc_linux_freeze_simq(struct ahc_softc *ahc); 431static void ahc_linux_freeze_simq(struct ahc_softc *ahc);
442static void ahc_linux_release_simq(u_long arg); 432static void ahc_linux_release_simq(u_long arg);
443static void ahc_linux_dev_timed_unfreeze(u_long arg); 433static int ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag);
444static int ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag);
445static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc); 434static void ahc_linux_initialize_scsi_bus(struct ahc_softc *ahc);
446static void ahc_linux_size_nseg(void);
447static void ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc);
448static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc, 435static u_int ahc_linux_user_tagdepth(struct ahc_softc *ahc,
449 struct ahc_devinfo *devinfo); 436 struct ahc_devinfo *devinfo);
450static void ahc_linux_device_queue_depth(struct ahc_softc *ahc, 437static void ahc_linux_device_queue_depth(struct ahc_softc *ahc,
@@ -458,54 +445,27 @@ static struct ahc_linux_device* ahc_linux_alloc_device(struct ahc_softc*,
458 u_int); 445 u_int);
459static void ahc_linux_free_device(struct ahc_softc*, 446static void ahc_linux_free_device(struct ahc_softc*,
460 struct ahc_linux_device*); 447 struct ahc_linux_device*);
461static void ahc_linux_run_device_queue(struct ahc_softc*, 448static int ahc_linux_run_command(struct ahc_softc*,
462 struct ahc_linux_device*); 449 struct ahc_linux_device *,
450 struct scsi_cmnd *);
463static void ahc_linux_setup_tag_info_global(char *p); 451static void ahc_linux_setup_tag_info_global(char *p);
464static aic_option_callback_t ahc_linux_setup_tag_info; 452static aic_option_callback_t ahc_linux_setup_tag_info;
465static int aic7xxx_setup(char *s); 453static int aic7xxx_setup(char *s);
466static int ahc_linux_next_unit(void); 454static int ahc_linux_next_unit(void);
467static void ahc_runq_tasklet(unsigned long data);
468static struct ahc_cmd *ahc_linux_run_complete_queue(struct ahc_softc *ahc);
469 455
470/********************************* Inlines ************************************/ 456/********************************* Inlines ************************************/
471static __inline void ahc_schedule_runq(struct ahc_softc *ahc);
472static __inline struct ahc_linux_device* 457static __inline struct ahc_linux_device*
473 ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, 458 ahc_linux_get_device(struct ahc_softc *ahc, u_int channel,
474 u_int target, u_int lun, int alloc); 459 u_int target, u_int lun);
475static __inline void ahc_schedule_completeq(struct ahc_softc *ahc);
476static __inline void ahc_linux_check_device_queue(struct ahc_softc *ahc,
477 struct ahc_linux_device *dev);
478static __inline struct ahc_linux_device *
479 ahc_linux_next_device_to_run(struct ahc_softc *ahc);
480static __inline void ahc_linux_run_device_queues(struct ahc_softc *ahc);
481static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*); 460static __inline void ahc_linux_unmap_scb(struct ahc_softc*, struct scb*);
482 461
483static __inline int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb, 462static __inline int ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
484 struct ahc_dma_seg *sg, 463 struct ahc_dma_seg *sg,
485 dma_addr_t addr, bus_size_t len); 464 dma_addr_t addr, bus_size_t len);
486 465
487static __inline void
488ahc_schedule_completeq(struct ahc_softc *ahc)
489{
490 if ((ahc->platform_data->flags & AHC_RUN_CMPLT_Q_TIMER) == 0) {
491 ahc->platform_data->flags |= AHC_RUN_CMPLT_Q_TIMER;
492 ahc->platform_data->completeq_timer.expires = jiffies;
493 add_timer(&ahc->platform_data->completeq_timer);
494 }
495}
496
497/*
498 * Must be called with our lock held.
499 */
500static __inline void
501ahc_schedule_runq(struct ahc_softc *ahc)
502{
503 tasklet_schedule(&ahc->platform_data->runq_tasklet);
504}
505
506static __inline struct ahc_linux_device* 466static __inline struct ahc_linux_device*
507ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target, 467ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
508 u_int lun, int alloc) 468 u_int lun)
509{ 469{
510 struct ahc_linux_target *targ; 470 struct ahc_linux_target *targ;
511 struct ahc_linux_device *dev; 471 struct ahc_linux_device *dev;
@@ -515,102 +475,15 @@ ahc_linux_get_device(struct ahc_softc *ahc, u_int channel, u_int target,
515 if (channel != 0) 475 if (channel != 0)
516 target_offset += 8; 476 target_offset += 8;
517 targ = ahc->platform_data->targets[target_offset]; 477 targ = ahc->platform_data->targets[target_offset];
518 if (targ == NULL) { 478 BUG_ON(targ == NULL);
519 if (alloc != 0) {
520 targ = ahc_linux_alloc_target(ahc, channel, target);
521 if (targ == NULL)
522 return (NULL);
523 } else
524 return (NULL);
525 }
526 dev = targ->devices[lun]; 479 dev = targ->devices[lun];
527 if (dev == NULL && alloc != 0) 480 return dev;
528 dev = ahc_linux_alloc_device(ahc, targ, lun);
529 return (dev);
530}
531
532#define AHC_LINUX_MAX_RETURNED_ERRORS 4
533static struct ahc_cmd *
534ahc_linux_run_complete_queue(struct ahc_softc *ahc)
535{
536 struct ahc_cmd *acmd;
537 u_long done_flags;
538 int with_errors;
539
540 with_errors = 0;
541 ahc_done_lock(ahc, &done_flags);
542 while ((acmd = TAILQ_FIRST(&ahc->platform_data->completeq)) != NULL) {
543 Scsi_Cmnd *cmd;
544
545 if (with_errors > AHC_LINUX_MAX_RETURNED_ERRORS) {
546 /*
547 * Linux uses stack recursion to requeue
548 * commands that need to be retried. Avoid
549 * blowing out the stack by "spoon feeding"
550 * commands that completed with error back
551 * the operating system in case they are going
552 * to be retried. "ick"
553 */
554 ahc_schedule_completeq(ahc);
555 break;
556 }
557 TAILQ_REMOVE(&ahc->platform_data->completeq,
558 acmd, acmd_links.tqe);
559 cmd = &acmd_scsi_cmd(acmd);
560 cmd->host_scribble = NULL;
561 if (ahc_cmd_get_transaction_status(cmd) != DID_OK
562 || (cmd->result & 0xFF) != SCSI_STATUS_OK)
563 with_errors++;
564
565 cmd->scsi_done(cmd);
566 }
567 ahc_done_unlock(ahc, &done_flags);
568 return (acmd);
569}
570
571static __inline void
572ahc_linux_check_device_queue(struct ahc_softc *ahc,
573 struct ahc_linux_device *dev)
574{
575 if ((dev->flags & AHC_DEV_FREEZE_TIL_EMPTY) != 0
576 && dev->active == 0) {
577 dev->flags &= ~AHC_DEV_FREEZE_TIL_EMPTY;
578 dev->qfrozen--;
579 }
580
581 if (TAILQ_FIRST(&dev->busyq) == NULL
582 || dev->openings == 0 || dev->qfrozen != 0)
583 return;
584
585 ahc_linux_run_device_queue(ahc, dev);
586}
587
588static __inline struct ahc_linux_device *
589ahc_linux_next_device_to_run(struct ahc_softc *ahc)
590{
591
592 if ((ahc->flags & AHC_RESOURCE_SHORTAGE) != 0
593 || (ahc->platform_data->qfrozen != 0))
594 return (NULL);
595 return (TAILQ_FIRST(&ahc->platform_data->device_runq));
596}
597
598static __inline void
599ahc_linux_run_device_queues(struct ahc_softc *ahc)
600{
601 struct ahc_linux_device *dev;
602
603 while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
604 TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
605 dev->flags &= ~AHC_DEV_ON_RUN_LIST;
606 ahc_linux_check_device_queue(ahc, dev);
607 }
608} 481}
609 482
610static __inline void 483static __inline void
611ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb) 484ahc_linux_unmap_scb(struct ahc_softc *ahc, struct scb *scb)
612{ 485{
613 Scsi_Cmnd *cmd; 486 struct scsi_cmnd *cmd;
614 487
615 cmd = scb->io_ctx; 488 cmd = scb->io_ctx;
616 ahc_sync_sglist(ahc, scb, BUS_DMASYNC_POSTWRITE); 489 ahc_sync_sglist(ahc, scb, BUS_DMASYNC_POSTWRITE);
@@ -650,109 +523,15 @@ ahc_linux_map_seg(struct ahc_softc *ahc, struct scb *scb,
650 return (consumed); 523 return (consumed);
651} 524}
652 525
653/************************ Host template entry points *************************/
654static int ahc_linux_detect(Scsi_Host_Template *);
655static int ahc_linux_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
656static const char *ahc_linux_info(struct Scsi_Host *);
657#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
658static int ahc_linux_slave_alloc(Scsi_Device *);
659static int ahc_linux_slave_configure(Scsi_Device *);
660static void ahc_linux_slave_destroy(Scsi_Device *);
661#if defined(__i386__)
662static int ahc_linux_biosparam(struct scsi_device*,
663 struct block_device*,
664 sector_t, int[]);
665#endif
666#else
667static int ahc_linux_release(struct Scsi_Host *);
668static void ahc_linux_select_queue_depth(struct Scsi_Host *host,
669 Scsi_Device *scsi_devs);
670#if defined(__i386__)
671static int ahc_linux_biosparam(Disk *, kdev_t, int[]);
672#endif
673#endif
674static int ahc_linux_bus_reset(Scsi_Cmnd *);
675static int ahc_linux_dev_reset(Scsi_Cmnd *);
676static int ahc_linux_abort(Scsi_Cmnd *);
677
678/*
679 * Calculate a safe value for AHC_NSEG (as expressed through ahc_linux_nseg).
680 *
681 * In pre-2.5.X...
682 * The midlayer allocates an S/G array dynamically when a command is issued
683 * using SCSI malloc. This array, which is in an OS dependent format that
684 * must later be copied to our private S/G list, is sized to house just the
685 * number of segments needed for the current transfer. Since the code that
686 * sizes the SCSI malloc pool does not take into consideration fragmentation
687 * of the pool, executing transactions numbering just a fraction of our
688 * concurrent transaction limit with list lengths aproaching AHC_NSEG will
689 * quickly depleat the SCSI malloc pool of usable space. Unfortunately, the
690 * mid-layer does not properly handle this scsi malloc failures for the S/G
691 * array and the result can be a lockup of the I/O subsystem. We try to size
692 * our S/G list so that it satisfies our drivers allocation requirements in
693 * addition to avoiding fragmentation of the SCSI malloc pool.
694 */
695static void
696ahc_linux_size_nseg(void)
697{
698#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
699 u_int cur_size;
700 u_int best_size;
701
702 /*
703 * The SCSI allocator rounds to the nearest 512 bytes
704 * an cannot allocate across a page boundary. Our algorithm
705 * is to start at 1K of scsi malloc space per-command and
706 * loop through all factors of the PAGE_SIZE and pick the best.
707 */
708 best_size = 0;
709 for (cur_size = 1024; cur_size <= PAGE_SIZE; cur_size *= 2) {
710 u_int nseg;
711
712 nseg = cur_size / sizeof(struct scatterlist);
713 if (nseg < AHC_LINUX_MIN_NSEG)
714 continue;
715
716 if (best_size == 0) {
717 best_size = cur_size;
718 ahc_linux_nseg = nseg;
719 } else {
720 u_int best_rem;
721 u_int cur_rem;
722
723 /*
724 * Compare the traits of the current "best_size"
725 * with the current size to determine if the
726 * current size is a better size.
727 */
728 best_rem = best_size % sizeof(struct scatterlist);
729 cur_rem = cur_size % sizeof(struct scatterlist);
730 if (cur_rem < best_rem) {
731 best_size = cur_size;
732 ahc_linux_nseg = nseg;
733 }
734 }
735 }
736#endif
737}
738
739/* 526/*
740 * Try to detect an Adaptec 7XXX controller. 527 * Try to detect an Adaptec 7XXX controller.
741 */ 528 */
742static int 529static int
743ahc_linux_detect(Scsi_Host_Template *template) 530ahc_linux_detect(struct scsi_host_template *template)
744{ 531{
745 struct ahc_softc *ahc; 532 struct ahc_softc *ahc;
746 int found = 0; 533 int found = 0;
747 534
748#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
749 /*
750 * It is a bug that the upper layer takes
751 * this lock just prior to calling us.
752 */
753 spin_unlock_irq(&io_request_lock);
754#endif
755
756 /* 535 /*
757 * Sanity checking of Linux SCSI data structures so 536 * Sanity checking of Linux SCSI data structures so
758 * that some of our hacks^H^H^H^H^Hassumptions aren't 537 * that some of our hacks^H^H^H^H^Hassumptions aren't
@@ -764,7 +543,6 @@ ahc_linux_detect(Scsi_Host_Template *template)
764 printf("ahc_linux_detect: Unable to attach\n"); 543 printf("ahc_linux_detect: Unable to attach\n");
765 return (0); 544 return (0);
766 } 545 }
767 ahc_linux_size_nseg();
768 /* 546 /*
769 * If we've been passed any parameters, process them now. 547 * If we've been passed any parameters, process them now.
770 */ 548 */
@@ -793,48 +571,11 @@ ahc_linux_detect(Scsi_Host_Template *template)
793 found++; 571 found++;
794 } 572 }
795 573
796#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
797 spin_lock_irq(&io_request_lock);
798#endif
799 aic7xxx_detect_complete++; 574 aic7xxx_detect_complete++;
800 575
801 return (found); 576 return (found);
802} 577}
803 578
804#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
805/*
806 * Free the passed in Scsi_Host memory structures prior to unloading the
807 * module.
808 */
809int
810ahc_linux_release(struct Scsi_Host * host)
811{
812 struct ahc_softc *ahc;
813 u_long l;
814
815 ahc_list_lock(&l);
816 if (host != NULL) {
817
818 /*
819 * We should be able to just perform
820 * the free directly, but check our
821 * list for extra sanity.
822 */
823 ahc = ahc_find_softc(*(struct ahc_softc **)host->hostdata);
824 if (ahc != NULL) {
825 u_long s;
826
827 ahc_lock(ahc, &s);
828 ahc_intr_enable(ahc, FALSE);
829 ahc_unlock(ahc, &s);
830 ahc_free(ahc);
831 }
832 }
833 ahc_list_unlock(&l);
834 return (0);
835}
836#endif
837
838/* 579/*
839 * Return a string describing the driver. 580 * Return a string describing the driver.
840 */ 581 */
@@ -867,11 +608,10 @@ ahc_linux_info(struct Scsi_Host *host)
867 * Queue an SCB to the controller. 608 * Queue an SCB to the controller.
868 */ 609 */
869static int 610static int
870ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *)) 611ahc_linux_queue(struct scsi_cmnd * cmd, void (*scsi_done) (struct scsi_cmnd *))
871{ 612{
872 struct ahc_softc *ahc; 613 struct ahc_softc *ahc;
873 struct ahc_linux_device *dev; 614 struct ahc_linux_device *dev;
874 u_long flags;
875 615
876 ahc = *(struct ahc_softc **)cmd->device->host->hostdata; 616 ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
877 617
@@ -880,205 +620,152 @@ ahc_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
880 */ 620 */
881 cmd->scsi_done = scsi_done; 621 cmd->scsi_done = scsi_done;
882 622
883 ahc_midlayer_entrypoint_lock(ahc, &flags);
884
885 /* 623 /*
886 * Close the race of a command that was in the process of 624 * Close the race of a command that was in the process of
887 * being queued to us just as our simq was frozen. Let 625 * being queued to us just as our simq was frozen. Let
888 * DV commands through so long as we are only frozen to 626 * DV commands through so long as we are only frozen to
889 * perform DV. 627 * perform DV.
890 */ 628 */
891 if (ahc->platform_data->qfrozen != 0) { 629 if (ahc->platform_data->qfrozen != 0)
630 return SCSI_MLQUEUE_HOST_BUSY;
892 631
893 ahc_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ);
894 ahc_linux_queue_cmd_complete(ahc, cmd);
895 ahc_schedule_completeq(ahc);
896 ahc_midlayer_entrypoint_unlock(ahc, &flags);
897 return (0);
898 }
899 dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id, 632 dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
900 cmd->device->lun, /*alloc*/TRUE); 633 cmd->device->lun);
901 if (dev == NULL) { 634 BUG_ON(dev == NULL);
902 ahc_cmd_set_transaction_status(cmd, CAM_RESRC_UNAVAIL); 635
903 ahc_linux_queue_cmd_complete(ahc, cmd);
904 ahc_schedule_completeq(ahc);
905 ahc_midlayer_entrypoint_unlock(ahc, &flags);
906 printf("%s: aic7xxx_linux_queue - Unable to allocate device!\n",
907 ahc_name(ahc));
908 return (0);
909 }
910 cmd->result = CAM_REQ_INPROG << 16; 636 cmd->result = CAM_REQ_INPROG << 16;
911 TAILQ_INSERT_TAIL(&dev->busyq, (struct ahc_cmd *)cmd, acmd_links.tqe); 637
912 if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) { 638 return ahc_linux_run_command(ahc, dev, cmd);
913 TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
914 dev->flags |= AHC_DEV_ON_RUN_LIST;
915 ahc_linux_run_device_queues(ahc);
916 }
917 ahc_midlayer_entrypoint_unlock(ahc, &flags);
918 return (0);
919} 639}
920 640
921#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
922static int 641static int
923ahc_linux_slave_alloc(Scsi_Device *device) 642ahc_linux_slave_alloc(struct scsi_device *device)
924{ 643{
925 struct ahc_softc *ahc; 644 struct ahc_softc *ahc;
645 struct ahc_linux_target *targ;
646 struct scsi_target *starget = device->sdev_target;
647 struct ahc_linux_device *dev;
648 unsigned int target_offset;
649 unsigned long flags;
650 int retval = -ENOMEM;
651
652 target_offset = starget->id;
653 if (starget->channel != 0)
654 target_offset += 8;
926 655
927 ahc = *((struct ahc_softc **)device->host->hostdata); 656 ahc = *((struct ahc_softc **)device->host->hostdata);
928 if (bootverbose) 657 if (bootverbose)
929 printf("%s: Slave Alloc %d\n", ahc_name(ahc), device->id); 658 printf("%s: Slave Alloc %d\n", ahc_name(ahc), device->id);
930 return (0); 659 ahc_lock(ahc, &flags);
660 targ = ahc->platform_data->targets[target_offset];
661 if (targ == NULL) {
662 struct seeprom_config *sc;
663
664 targ = ahc_linux_alloc_target(ahc, starget->channel,
665 starget->id);
666 sc = ahc->seep_config;
667 if (targ == NULL)
668 goto out;
669
670 if (sc) {
671 unsigned short scsirate;
672 struct ahc_devinfo devinfo;
673 struct ahc_initiator_tinfo *tinfo;
674 struct ahc_tmode_tstate *tstate;
675 char channel = starget->channel + 'A';
676 unsigned int our_id = ahc->our_id;
677
678 if (starget->channel)
679 our_id = ahc->our_id_b;
680
681 if ((ahc->features & AHC_ULTRA2) != 0) {
682 scsirate = sc->device_flags[target_offset] & CFXFER;
683 } else {
684 scsirate = (sc->device_flags[target_offset] & CFXFER) << 4;
685 if (sc->device_flags[target_offset] & CFSYNCH)
686 scsirate |= SOFS;
687 }
688 if (sc->device_flags[target_offset] & CFWIDEB) {
689 scsirate |= WIDEXFER;
690 spi_max_width(starget) = 1;
691 } else
692 spi_max_width(starget) = 0;
693 spi_min_period(starget) =
694 ahc_find_period(ahc, scsirate, AHC_SYNCRATE_DT);
695 tinfo = ahc_fetch_transinfo(ahc, channel, ahc->our_id,
696 targ->target, &tstate);
697 ahc_compile_devinfo(&devinfo, our_id, targ->target,
698 CAM_LUN_WILDCARD, channel,
699 ROLE_INITIATOR);
700 ahc_set_syncrate(ahc, &devinfo, NULL, 0, 0, 0,
701 AHC_TRANS_GOAL, /*paused*/FALSE);
702 ahc_set_width(ahc, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
703 AHC_TRANS_GOAL, /*paused*/FALSE);
704 }
705
706 }
707 dev = targ->devices[device->lun];
708 if (dev == NULL) {
709 dev = ahc_linux_alloc_device(ahc, targ, device->lun);
710 if (dev == NULL)
711 goto out;
712 }
713 retval = 0;
714
715 out:
716 ahc_unlock(ahc, &flags);
717 return retval;
931} 718}
932 719
933static int 720static int
934ahc_linux_slave_configure(Scsi_Device *device) 721ahc_linux_slave_configure(struct scsi_device *device)
935{ 722{
936 struct ahc_softc *ahc; 723 struct ahc_softc *ahc;
937 struct ahc_linux_device *dev; 724 struct ahc_linux_device *dev;
938 u_long flags;
939 725
940 ahc = *((struct ahc_softc **)device->host->hostdata); 726 ahc = *((struct ahc_softc **)device->host->hostdata);
727
941 if (bootverbose) 728 if (bootverbose)
942 printf("%s: Slave Configure %d\n", ahc_name(ahc), device->id); 729 printf("%s: Slave Configure %d\n", ahc_name(ahc), device->id);
943 ahc_midlayer_entrypoint_lock(ahc, &flags); 730
944 /* 731 dev = ahc_linux_get_device(ahc, device->channel, device->id,
945 * Since Linux has attached to the device, configure 732 device->lun);
946 * it so we don't free and allocate the device 733 dev->scsi_device = device;
947 * structure on every command. 734 ahc_linux_device_queue_depth(ahc, dev);
948 */
949 dev = ahc_linux_get_device(ahc, device->channel,
950 device->id, device->lun,
951 /*alloc*/TRUE);
952 if (dev != NULL) {
953 dev->flags &= ~AHC_DEV_UNCONFIGURED;
954 dev->scsi_device = device;
955 ahc_linux_device_queue_depth(ahc, dev);
956 }
957 ahc_midlayer_entrypoint_unlock(ahc, &flags);
958 735
959 /* Initial Domain Validation */ 736 /* Initial Domain Validation */
960 if (!spi_initial_dv(device->sdev_target)) 737 if (!spi_initial_dv(device->sdev_target))
961 spi_dv_device(device); 738 spi_dv_device(device);
962 739
963 return (0); 740 return 0;
964} 741}
965 742
966static void 743static void
967ahc_linux_slave_destroy(Scsi_Device *device) 744ahc_linux_slave_destroy(struct scsi_device *device)
968{ 745{
969 struct ahc_softc *ahc; 746 struct ahc_softc *ahc;
970 struct ahc_linux_device *dev; 747 struct ahc_linux_device *dev;
971 u_long flags;
972 748
973 ahc = *((struct ahc_softc **)device->host->hostdata); 749 ahc = *((struct ahc_softc **)device->host->hostdata);
974 if (bootverbose) 750 if (bootverbose)
975 printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id); 751 printf("%s: Slave Destroy %d\n", ahc_name(ahc), device->id);
976 ahc_midlayer_entrypoint_lock(ahc, &flags);
977 dev = ahc_linux_get_device(ahc, device->channel, 752 dev = ahc_linux_get_device(ahc, device->channel,
978 device->id, device->lun, 753 device->id, device->lun);
979 /*alloc*/FALSE);
980 /*
981 * Filter out "silly" deletions of real devices by only
982 * deleting devices that have had slave_configure()
983 * called on them. All other devices that have not
984 * been configured will automatically be deleted by
985 * the refcounting process.
986 */
987 if (dev != NULL
988 && (dev->flags & AHC_DEV_SLAVE_CONFIGURED) != 0) {
989 dev->flags |= AHC_DEV_UNCONFIGURED;
990 if (TAILQ_EMPTY(&dev->busyq)
991 && dev->active == 0
992 && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
993 ahc_linux_free_device(ahc, dev);
994 }
995 ahc_midlayer_entrypoint_unlock(ahc, &flags);
996}
997#else
998/*
999 * Sets the queue depth for each SCSI device hanging
1000 * off the input host adapter.
1001 */
1002static void
1003ahc_linux_select_queue_depth(struct Scsi_Host *host, Scsi_Device *scsi_devs)
1004{
1005 Scsi_Device *device;
1006 Scsi_Device *ldev;
1007 struct ahc_softc *ahc;
1008 u_long flags;
1009 754
1010 ahc = *((struct ahc_softc **)host->hostdata); 755 BUG_ON(dev->active);
1011 ahc_lock(ahc, &flags);
1012 for (device = scsi_devs; device != NULL; device = device->next) {
1013 756
1014 /* 757 ahc_linux_free_device(ahc, dev);
1015 * Watch out for duplicate devices. This works around
1016 * some quirks in how the SCSI scanning code does its
1017 * device management.
1018 */
1019 for (ldev = scsi_devs; ldev != device; ldev = ldev->next) {
1020 if (ldev->host == device->host
1021 && ldev->channel == device->channel
1022 && ldev->id == device->id
1023 && ldev->lun == device->lun)
1024 break;
1025 }
1026 /* Skip duplicate. */
1027 if (ldev != device)
1028 continue;
1029
1030 if (device->host == host) {
1031 struct ahc_linux_device *dev;
1032
1033 /*
1034 * Since Linux has attached to the device, configure
1035 * it so we don't free and allocate the device
1036 * structure on every command.
1037 */
1038 dev = ahc_linux_get_device(ahc, device->channel,
1039 device->id, device->lun,
1040 /*alloc*/TRUE);
1041 if (dev != NULL) {
1042 dev->flags &= ~AHC_DEV_UNCONFIGURED;
1043 dev->scsi_device = device;
1044 ahc_linux_device_queue_depth(ahc, dev);
1045 device->queue_depth = dev->openings
1046 + dev->active;
1047 if ((dev->flags & (AHC_DEV_Q_BASIC
1048 | AHC_DEV_Q_TAGGED)) == 0) {
1049 /*
1050 * We allow the OS to queue 2 untagged
1051 * transactions to us at any time even
1052 * though we can only execute them
1053 * serially on the controller/device.
1054 * This should remove some latency.
1055 */
1056 device->queue_depth = 2;
1057 }
1058 }
1059 }
1060 }
1061 ahc_unlock(ahc, &flags);
1062} 758}
1063#endif
1064 759
1065#if defined(__i386__) 760#if defined(__i386__)
1066/* 761/*
1067 * Return the disk geometry for the given SCSI device. 762 * Return the disk geometry for the given SCSI device.
1068 */ 763 */
1069static int 764static int
1070#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1071ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev, 765ahc_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1072 sector_t capacity, int geom[]) 766 sector_t capacity, int geom[])
1073{ 767{
1074 uint8_t *bh; 768 uint8_t *bh;
1075#else
1076ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
1077{
1078 struct scsi_device *sdev = disk->device;
1079 u_long capacity = disk->capacity;
1080 struct buffer_head *bh;
1081#endif
1082 int heads; 769 int heads;
1083 int sectors; 770 int sectors;
1084 int cylinders; 771 int cylinders;
@@ -1090,22 +777,11 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
1090 ahc = *((struct ahc_softc **)sdev->host->hostdata); 777 ahc = *((struct ahc_softc **)sdev->host->hostdata);
1091 channel = sdev->channel; 778 channel = sdev->channel;
1092 779
1093#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1094 bh = scsi_bios_ptable(bdev); 780 bh = scsi_bios_ptable(bdev);
1095#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,17)
1096 bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, block_size(dev));
1097#else
1098 bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, 1024);
1099#endif
1100
1101 if (bh) { 781 if (bh) {
1102 ret = scsi_partsize(bh, capacity, 782 ret = scsi_partsize(bh, capacity,
1103 &geom[2], &geom[0], &geom[1]); 783 &geom[2], &geom[0], &geom[1]);
1104#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1105 kfree(bh); 784 kfree(bh);
1106#else
1107 brelse(bh);
1108#endif
1109 if (ret != -1) 785 if (ret != -1)
1110 return (ret); 786 return (ret);
1111 } 787 }
@@ -1135,7 +811,7 @@ ahc_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
1135 * Abort the current SCSI command(s). 811 * Abort the current SCSI command(s).
1136 */ 812 */
1137static int 813static int
1138ahc_linux_abort(Scsi_Cmnd *cmd) 814ahc_linux_abort(struct scsi_cmnd *cmd)
1139{ 815{
1140 int error; 816 int error;
1141 817
@@ -1149,7 +825,7 @@ ahc_linux_abort(Scsi_Cmnd *cmd)
1149 * Attempt to send a target reset message to the device that timed out. 825 * Attempt to send a target reset message to the device that timed out.
1150 */ 826 */
1151static int 827static int
1152ahc_linux_dev_reset(Scsi_Cmnd *cmd) 828ahc_linux_dev_reset(struct scsi_cmnd *cmd)
1153{ 829{
1154 int error; 830 int error;
1155 831
@@ -1163,18 +839,14 @@ ahc_linux_dev_reset(Scsi_Cmnd *cmd)
1163 * Reset the SCSI bus. 839 * Reset the SCSI bus.
1164 */ 840 */
1165static int 841static int
1166ahc_linux_bus_reset(Scsi_Cmnd *cmd) 842ahc_linux_bus_reset(struct scsi_cmnd *cmd)
1167{ 843{
1168 struct ahc_softc *ahc; 844 struct ahc_softc *ahc;
1169 u_long s;
1170 int found; 845 int found;
1171 846
1172 ahc = *(struct ahc_softc **)cmd->device->host->hostdata; 847 ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
1173 ahc_midlayer_entrypoint_lock(ahc, &s);
1174 found = ahc_reset_channel(ahc, cmd->device->channel + 'A', 848 found = ahc_reset_channel(ahc, cmd->device->channel + 'A',
1175 /*initiate reset*/TRUE); 849 /*initiate reset*/TRUE);
1176 ahc_linux_run_complete_queue(ahc);
1177 ahc_midlayer_entrypoint_unlock(ahc, &s);
1178 850
1179 if (bootverbose) 851 if (bootverbose)
1180 printf("%s: SCSI bus reset delivered. " 852 printf("%s: SCSI bus reset delivered. "
@@ -1183,7 +855,7 @@ ahc_linux_bus_reset(Scsi_Cmnd *cmd)
1183 return SUCCESS; 855 return SUCCESS;
1184} 856}
1185 857
1186Scsi_Host_Template aic7xxx_driver_template = { 858struct scsi_host_template aic7xxx_driver_template = {
1187 .module = THIS_MODULE, 859 .module = THIS_MODULE,
1188 .name = "aic7xxx", 860 .name = "aic7xxx",
1189 .proc_info = ahc_linux_proc_info, 861 .proc_info = ahc_linux_proc_info,
@@ -1206,33 +878,6 @@ Scsi_Host_Template aic7xxx_driver_template = {
1206 878
1207/**************************** Tasklet Handler *********************************/ 879/**************************** Tasklet Handler *********************************/
1208 880
1209/*
1210 * In 2.4.X and above, this routine is called from a tasklet,
1211 * so we must re-acquire our lock prior to executing this code.
1212 * In all prior kernels, ahc_schedule_runq() calls this routine
1213 * directly and ahc_schedule_runq() is called with our lock held.
1214 */
1215static void
1216ahc_runq_tasklet(unsigned long data)
1217{
1218 struct ahc_softc* ahc;
1219 struct ahc_linux_device *dev;
1220 u_long flags;
1221
1222 ahc = (struct ahc_softc *)data;
1223 ahc_lock(ahc, &flags);
1224 while ((dev = ahc_linux_next_device_to_run(ahc)) != NULL) {
1225
1226 TAILQ_REMOVE(&ahc->platform_data->device_runq, dev, links);
1227 dev->flags &= ~AHC_DEV_ON_RUN_LIST;
1228 ahc_linux_check_device_queue(ahc, dev);
1229 /* Yeild to our interrupt handler */
1230 ahc_unlock(ahc, &flags);
1231 ahc_lock(ahc, &flags);
1232 }
1233 ahc_unlock(ahc, &flags);
1234}
1235
1236/******************************** Macros **************************************/ 881/******************************** Macros **************************************/
1237#define BUILD_SCSIID(ahc, cmd) \ 882#define BUILD_SCSIID(ahc, cmd) \
1238 ((((cmd)->device->id << TID_SHIFT) & TID) \ 883 ((((cmd)->device->id << TID_SHIFT) & TID) \
@@ -1278,37 +923,11 @@ int
1278ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr, 923ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr,
1279 int flags, bus_dmamap_t *mapp) 924 int flags, bus_dmamap_t *mapp)
1280{ 925{
1281 bus_dmamap_t map;
1282
1283 map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT);
1284 if (map == NULL)
1285 return (ENOMEM);
1286 /*
1287 * Although we can dma data above 4GB, our
1288 * "consistent" memory is below 4GB for
1289 * space efficiency reasons (only need a 4byte
1290 * address). For this reason, we have to reset
1291 * our dma mask when doing allocations.
1292 */
1293 if (ahc->dev_softc != NULL)
1294 if (pci_set_dma_mask(ahc->dev_softc, 0xFFFFFFFF)) {
1295 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
1296 kfree(map);
1297 return (ENODEV);
1298 }
1299 *vaddr = pci_alloc_consistent(ahc->dev_softc, 926 *vaddr = pci_alloc_consistent(ahc->dev_softc,
1300 dmat->maxsize, &map->bus_addr); 927 dmat->maxsize, mapp);
1301 if (ahc->dev_softc != NULL)
1302 if (pci_set_dma_mask(ahc->dev_softc,
1303 ahc->platform_data->hw_dma_mask)) {
1304 printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
1305 kfree(map);
1306 return (ENODEV);
1307 }
1308 if (*vaddr == NULL) 928 if (*vaddr == NULL)
1309 return (ENOMEM); 929 return ENOMEM;
1310 *mapp = map; 930 return 0;
1311 return(0);
1312} 931}
1313 932
1314void 933void
@@ -1316,7 +935,7 @@ ahc_dmamem_free(struct ahc_softc *ahc, bus_dma_tag_t dmat,
1316 void* vaddr, bus_dmamap_t map) 935 void* vaddr, bus_dmamap_t map)
1317{ 936{
1318 pci_free_consistent(ahc->dev_softc, dmat->maxsize, 937 pci_free_consistent(ahc->dev_softc, dmat->maxsize,
1319 vaddr, map->bus_addr); 938 vaddr, map);
1320} 939}
1321 940
1322int 941int
@@ -1330,7 +949,7 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
1330 */ 949 */
1331 bus_dma_segment_t stack_sg; 950 bus_dma_segment_t stack_sg;
1332 951
1333 stack_sg.ds_addr = map->bus_addr; 952 stack_sg.ds_addr = map;
1334 stack_sg.ds_len = dmat->maxsize; 953 stack_sg.ds_len = dmat->maxsize;
1335 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0); 954 cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
1336 return (0); 955 return (0);
@@ -1339,12 +958,6 @@ ahc_dmamap_load(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map,
1339void 958void
1340ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map) 959ahc_dmamap_destroy(struct ahc_softc *ahc, bus_dma_tag_t dmat, bus_dmamap_t map)
1341{ 960{
1342 /*
1343 * The map may is NULL in our < 2.3.X implementation.
1344 * Now it's 2.6.5, but just in case...
1345 */
1346 BUG_ON(map == NULL);
1347 free(map, M_DEVBUF);
1348} 961}
1349 962
1350int 963int
@@ -1550,7 +1163,7 @@ __setup("aic7xxx=", aic7xxx_setup);
1550uint32_t aic7xxx_verbose; 1163uint32_t aic7xxx_verbose;
1551 1164
1552int 1165int
1553ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template) 1166ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *template)
1554{ 1167{
1555 char buf[80]; 1168 char buf[80];
1556 struct Scsi_Host *host; 1169 struct Scsi_Host *host;
@@ -1564,11 +1177,7 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
1564 1177
1565 *((struct ahc_softc **)host->hostdata) = ahc; 1178 *((struct ahc_softc **)host->hostdata) = ahc;
1566 ahc_lock(ahc, &s); 1179 ahc_lock(ahc, &s);
1567#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1568 scsi_assign_lock(host, &ahc->platform_data->spin_lock); 1180 scsi_assign_lock(host, &ahc->platform_data->spin_lock);
1569#elif AHC_SCSI_HAS_HOST_LOCK != 0
1570 host->lock = &ahc->platform_data->spin_lock;
1571#endif
1572 ahc->platform_data->host = host; 1181 ahc->platform_data->host = host;
1573 host->can_queue = AHC_MAX_QUEUE; 1182 host->can_queue = AHC_MAX_QUEUE;
1574 host->cmd_per_lun = 2; 1183 host->cmd_per_lun = 2;
@@ -1587,19 +1196,14 @@ ahc_linux_register_host(struct ahc_softc *ahc, Scsi_Host_Template *template)
1587 ahc_set_name(ahc, new_name); 1196 ahc_set_name(ahc, new_name);
1588 } 1197 }
1589 host->unique_id = ahc->unit; 1198 host->unique_id = ahc->unit;
1590#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
1591 scsi_set_pci_device(host, ahc->dev_softc);
1592#endif
1593 ahc_linux_initialize_scsi_bus(ahc); 1199 ahc_linux_initialize_scsi_bus(ahc);
1594 ahc_intr_enable(ahc, TRUE); 1200 ahc_intr_enable(ahc, TRUE);
1595 ahc_unlock(ahc, &s); 1201 ahc_unlock(ahc, &s);
1596 1202
1597 host->transportt = ahc_linux_transport_template; 1203 host->transportt = ahc_linux_transport_template;
1598 1204
1599#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1600 scsi_add_host(host, (ahc->dev_softc ? &ahc->dev_softc->dev : NULL)); /* XXX handle failure */ 1205 scsi_add_host(host, (ahc->dev_softc ? &ahc->dev_softc->dev : NULL)); /* XXX handle failure */
1601 scsi_scan_host(host); 1206 scsi_scan_host(host);
1602#endif
1603 return (0); 1207 return (0);
1604} 1208}
1605 1209
@@ -1717,19 +1321,9 @@ ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg)
1717 if (ahc->platform_data == NULL) 1321 if (ahc->platform_data == NULL)
1718 return (ENOMEM); 1322 return (ENOMEM);
1719 memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data)); 1323 memset(ahc->platform_data, 0, sizeof(struct ahc_platform_data));
1720 TAILQ_INIT(&ahc->platform_data->completeq);
1721 TAILQ_INIT(&ahc->platform_data->device_runq);
1722 ahc->platform_data->irq = AHC_LINUX_NOIRQ; 1324 ahc->platform_data->irq = AHC_LINUX_NOIRQ;
1723 ahc->platform_data->hw_dma_mask = 0xFFFFFFFF;
1724 ahc_lockinit(ahc); 1325 ahc_lockinit(ahc);
1725 ahc_done_lockinit(ahc);
1726 init_timer(&ahc->platform_data->completeq_timer);
1727 ahc->platform_data->completeq_timer.data = (u_long)ahc;
1728 ahc->platform_data->completeq_timer.function =
1729 (ahc_linux_callback_t *)ahc_linux_thread_run_complete_queue;
1730 init_MUTEX_LOCKED(&ahc->platform_data->eh_sem); 1326 init_MUTEX_LOCKED(&ahc->platform_data->eh_sem);
1731 tasklet_init(&ahc->platform_data->runq_tasklet, ahc_runq_tasklet,
1732 (unsigned long)ahc);
1733 ahc->seltime = (aic7xxx_seltime & 0x3) << 4; 1327 ahc->seltime = (aic7xxx_seltime & 0x3) << 4;
1734 ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4; 1328 ahc->seltime_b = (aic7xxx_seltime & 0x3) << 4;
1735 if (aic7xxx_pci_parity == 0) 1329 if (aic7xxx_pci_parity == 0)
@@ -1746,12 +1340,8 @@ ahc_platform_free(struct ahc_softc *ahc)
1746 int i, j; 1340 int i, j;
1747 1341
1748 if (ahc->platform_data != NULL) { 1342 if (ahc->platform_data != NULL) {
1749 del_timer_sync(&ahc->platform_data->completeq_timer);
1750 tasklet_kill(&ahc->platform_data->runq_tasklet);
1751 if (ahc->platform_data->host != NULL) { 1343 if (ahc->platform_data->host != NULL) {
1752#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1753 scsi_remove_host(ahc->platform_data->host); 1344 scsi_remove_host(ahc->platform_data->host);
1754#endif
1755 scsi_host_put(ahc->platform_data->host); 1345 scsi_host_put(ahc->platform_data->host);
1756 } 1346 }
1757 1347
@@ -1787,16 +1377,7 @@ ahc_platform_free(struct ahc_softc *ahc)
1787 release_mem_region(ahc->platform_data->mem_busaddr, 1377 release_mem_region(ahc->platform_data->mem_busaddr,
1788 0x1000); 1378 0x1000);
1789 } 1379 }
1790#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) 1380
1791 /*
1792 * In 2.4 we detach from the scsi midlayer before the PCI
1793 * layer invokes our remove callback. No per-instance
1794 * detach is provided, so we must reach inside the PCI
1795 * subsystem's internals and detach our driver manually.
1796 */
1797 if (ahc->dev_softc != NULL)
1798 ahc->dev_softc->driver = NULL;
1799#endif
1800 free(ahc->platform_data, M_DEVBUF); 1381 free(ahc->platform_data, M_DEVBUF);
1801 } 1382 }
1802} 1383}
@@ -1820,7 +1401,7 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
1820 1401
1821 dev = ahc_linux_get_device(ahc, devinfo->channel - 'A', 1402 dev = ahc_linux_get_device(ahc, devinfo->channel - 'A',
1822 devinfo->target, 1403 devinfo->target,
1823 devinfo->lun, /*alloc*/FALSE); 1404 devinfo->lun);
1824 if (dev == NULL) 1405 if (dev == NULL)
1825 return; 1406 return;
1826 was_queuing = dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED); 1407 was_queuing = dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED);
@@ -1873,7 +1454,6 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
1873 dev->maxtags = 0; 1454 dev->maxtags = 0;
1874 dev->openings = 1 - dev->active; 1455 dev->openings = 1 - dev->active;
1875 } 1456 }
1876#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
1877 if (dev->scsi_device != NULL) { 1457 if (dev->scsi_device != NULL) {
1878 switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) { 1458 switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) {
1879 case AHC_DEV_Q_BASIC: 1459 case AHC_DEV_Q_BASIC:
@@ -1899,90 +1479,13 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
1899 break; 1479 break;
1900 } 1480 }
1901 } 1481 }
1902#endif
1903} 1482}
1904 1483
1905int 1484int
1906ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel, 1485ahc_platform_abort_scbs(struct ahc_softc *ahc, int target, char channel,
1907 int lun, u_int tag, role_t role, uint32_t status) 1486 int lun, u_int tag, role_t role, uint32_t status)
1908{ 1487{
1909 int chan; 1488 return 0;
1910 int maxchan;
1911 int targ;
1912 int maxtarg;
1913 int clun;
1914 int maxlun;
1915 int count;
1916
1917 if (tag != SCB_LIST_NULL)
1918 return (0);
1919
1920 chan = 0;
1921 if (channel != ALL_CHANNELS) {
1922 chan = channel - 'A';
1923 maxchan = chan + 1;
1924 } else {
1925 maxchan = (ahc->features & AHC_TWIN) ? 2 : 1;
1926 }
1927 targ = 0;
1928 if (target != CAM_TARGET_WILDCARD) {
1929 targ = target;
1930 maxtarg = targ + 1;
1931 } else {
1932 maxtarg = (ahc->features & AHC_WIDE) ? 16 : 8;
1933 }
1934 clun = 0;
1935 if (lun != CAM_LUN_WILDCARD) {
1936 clun = lun;
1937 maxlun = clun + 1;
1938 } else {
1939 maxlun = AHC_NUM_LUNS;
1940 }
1941
1942 count = 0;
1943 for (; chan < maxchan; chan++) {
1944
1945 for (; targ < maxtarg; targ++) {
1946
1947 for (; clun < maxlun; clun++) {
1948 struct ahc_linux_device *dev;
1949 struct ahc_busyq *busyq;
1950 struct ahc_cmd *acmd;
1951
1952 dev = ahc_linux_get_device(ahc, chan,
1953 targ, clun,
1954 /*alloc*/FALSE);
1955 if (dev == NULL)
1956 continue;
1957
1958 busyq = &dev->busyq;
1959 while ((acmd = TAILQ_FIRST(busyq)) != NULL) {
1960 Scsi_Cmnd *cmd;
1961
1962 cmd = &acmd_scsi_cmd(acmd);
1963 TAILQ_REMOVE(busyq, acmd,
1964 acmd_links.tqe);
1965 count++;
1966 cmd->result = status << 16;
1967 ahc_linux_queue_cmd_complete(ahc, cmd);
1968 }
1969 }
1970 }
1971 }
1972
1973 return (count);
1974}
1975
1976static void
1977ahc_linux_thread_run_complete_queue(struct ahc_softc *ahc)
1978{
1979 u_long flags;
1980
1981 ahc_lock(ahc, &flags);
1982 del_timer(&ahc->platform_data->completeq_timer);
1983 ahc->platform_data->flags &= ~AHC_RUN_CMPLT_Q_TIMER;
1984 ahc_linux_run_complete_queue(ahc);
1985 ahc_unlock(ahc, &flags);
1986} 1489}
1987 1490
1988static u_int 1491static u_int
@@ -2045,213 +1548,200 @@ ahc_linux_device_queue_depth(struct ahc_softc *ahc,
2045 } 1548 }
2046} 1549}
2047 1550
2048static void 1551static int
2049ahc_linux_run_device_queue(struct ahc_softc *ahc, struct ahc_linux_device *dev) 1552ahc_linux_run_command(struct ahc_softc *ahc, struct ahc_linux_device *dev,
1553 struct scsi_cmnd *cmd)
2050{ 1554{
2051 struct ahc_cmd *acmd;
2052 struct scsi_cmnd *cmd;
2053 struct scb *scb; 1555 struct scb *scb;
2054 struct hardware_scb *hscb; 1556 struct hardware_scb *hscb;
2055 struct ahc_initiator_tinfo *tinfo; 1557 struct ahc_initiator_tinfo *tinfo;
2056 struct ahc_tmode_tstate *tstate; 1558 struct ahc_tmode_tstate *tstate;
2057 uint16_t mask; 1559 uint16_t mask;
1560 struct scb_tailq *untagged_q = NULL;
2058 1561
2059 if ((dev->flags & AHC_DEV_ON_RUN_LIST) != 0) 1562 /*
2060 panic("running device on run list"); 1563 * Schedule us to run later. The only reason we are not
1564 * running is because the whole controller Q is frozen.
1565 */
1566 if (ahc->platform_data->qfrozen != 0)
1567 return SCSI_MLQUEUE_HOST_BUSY;
2061 1568
2062 while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL 1569 /*
2063 && dev->openings > 0 && dev->qfrozen == 0) { 1570 * We only allow one untagged transaction
1571 * per target in the initiator role unless
1572 * we are storing a full busy target *lun*
1573 * table in SCB space.
1574 */
1575 if (!blk_rq_tagged(cmd->request)
1576 && (ahc->features & AHC_SCB_BTT) == 0) {
1577 int target_offset;
2064 1578
2065 /* 1579 target_offset = cmd->device->id + cmd->device->channel * 8;
2066 * Schedule us to run later. The only reason we are not 1580 untagged_q = &(ahc->untagged_queues[target_offset]);
2067 * running is because the whole controller Q is frozen. 1581 if (!TAILQ_EMPTY(untagged_q))
2068 */ 1582 /* if we're already executing an untagged command
2069 if (ahc->platform_data->qfrozen != 0) { 1583 * we're busy to another */
2070 TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, 1584 return SCSI_MLQUEUE_DEVICE_BUSY;
2071 dev, links); 1585 }
2072 dev->flags |= AHC_DEV_ON_RUN_LIST;
2073 return;
2074 }
2075 /*
2076 * Get an scb to use.
2077 */
2078 if ((scb = ahc_get_scb(ahc)) == NULL) {
2079 TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq,
2080 dev, links);
2081 dev->flags |= AHC_DEV_ON_RUN_LIST;
2082 ahc->flags |= AHC_RESOURCE_SHORTAGE;
2083 return;
2084 }
2085 TAILQ_REMOVE(&dev->busyq, acmd, acmd_links.tqe);
2086 cmd = &acmd_scsi_cmd(acmd);
2087 scb->io_ctx = cmd;
2088 scb->platform_data->dev = dev;
2089 hscb = scb->hscb;
2090 cmd->host_scribble = (char *)scb;
2091 1586
2092 /* 1587 /*
2093 * Fill out basics of the HSCB. 1588 * Get an scb to use.
2094 */ 1589 */
2095 hscb->control = 0; 1590 if ((scb = ahc_get_scb(ahc)) == NULL) {
2096 hscb->scsiid = BUILD_SCSIID(ahc, cmd); 1591 ahc->flags |= AHC_RESOURCE_SHORTAGE;
2097 hscb->lun = cmd->device->lun; 1592 return SCSI_MLQUEUE_HOST_BUSY;
2098 mask = SCB_GET_TARGET_MASK(ahc, scb); 1593 }
2099 tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
2100 SCB_GET_OUR_ID(scb),
2101 SCB_GET_TARGET(ahc, scb), &tstate);
2102 hscb->scsirate = tinfo->scsirate;
2103 hscb->scsioffset = tinfo->curr.offset;
2104 if ((tstate->ultraenb & mask) != 0)
2105 hscb->control |= ULTRAENB;
2106
2107 if ((ahc->user_discenable & mask) != 0)
2108 hscb->control |= DISCENB;
2109
2110 if ((tstate->auto_negotiate & mask) != 0) {
2111 scb->flags |= SCB_AUTO_NEGOTIATE;
2112 scb->hscb->control |= MK_MESSAGE;
2113 }
2114 1594
2115 if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) { 1595 scb->io_ctx = cmd;
2116#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) 1596 scb->platform_data->dev = dev;
2117 int msg_bytes; 1597 hscb = scb->hscb;
2118 uint8_t tag_msgs[2]; 1598 cmd->host_scribble = (char *)scb;
2119 1599
2120 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs); 1600 /*
2121 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) { 1601 * Fill out basics of the HSCB.
2122 hscb->control |= tag_msgs[0]; 1602 */
2123 if (tag_msgs[0] == MSG_ORDERED_TASK) 1603 hscb->control = 0;
2124 dev->commands_since_idle_or_otag = 0; 1604 hscb->scsiid = BUILD_SCSIID(ahc, cmd);
2125 } else 1605 hscb->lun = cmd->device->lun;
2126#endif 1606 mask = SCB_GET_TARGET_MASK(ahc, scb);
2127 if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH 1607 tinfo = ahc_fetch_transinfo(ahc, SCB_GET_CHANNEL(ahc, scb),
2128 && (dev->flags & AHC_DEV_Q_TAGGED) != 0) { 1608 SCB_GET_OUR_ID(scb),
2129 hscb->control |= MSG_ORDERED_TASK; 1609 SCB_GET_TARGET(ahc, scb), &tstate);
1610 hscb->scsirate = tinfo->scsirate;
1611 hscb->scsioffset = tinfo->curr.offset;
1612 if ((tstate->ultraenb & mask) != 0)
1613 hscb->control |= ULTRAENB;
1614
1615 if ((ahc->user_discenable & mask) != 0)
1616 hscb->control |= DISCENB;
1617
1618 if ((tstate->auto_negotiate & mask) != 0) {
1619 scb->flags |= SCB_AUTO_NEGOTIATE;
1620 scb->hscb->control |= MK_MESSAGE;
1621 }
1622
1623 if ((dev->flags & (AHC_DEV_Q_TAGGED|AHC_DEV_Q_BASIC)) != 0) {
1624 int msg_bytes;
1625 uint8_t tag_msgs[2];
1626
1627 msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
1628 if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
1629 hscb->control |= tag_msgs[0];
1630 if (tag_msgs[0] == MSG_ORDERED_TASK)
2130 dev->commands_since_idle_or_otag = 0; 1631 dev->commands_since_idle_or_otag = 0;
2131 } else { 1632 } else if (dev->commands_since_idle_or_otag == AHC_OTAG_THRESH
2132 hscb->control |= MSG_SIMPLE_TASK; 1633 && (dev->flags & AHC_DEV_Q_TAGGED) != 0) {
2133 } 1634 hscb->control |= MSG_ORDERED_TASK;
2134 } 1635 dev->commands_since_idle_or_otag = 0;
2135
2136 hscb->cdb_len = cmd->cmd_len;
2137 if (hscb->cdb_len <= 12) {
2138 memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
2139 } else { 1636 } else {
2140 memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len); 1637 hscb->control |= MSG_SIMPLE_TASK;
2141 scb->flags |= SCB_CDB32_PTR;
2142 } 1638 }
1639 }
2143 1640
2144 scb->platform_data->xfer_len = 0; 1641 hscb->cdb_len = cmd->cmd_len;
2145 ahc_set_residual(scb, 0); 1642 if (hscb->cdb_len <= 12) {
2146 ahc_set_sense_residual(scb, 0); 1643 memcpy(hscb->shared_data.cdb, cmd->cmnd, hscb->cdb_len);
2147 scb->sg_count = 0; 1644 } else {
2148 if (cmd->use_sg != 0) { 1645 memcpy(hscb->cdb32, cmd->cmnd, hscb->cdb_len);
2149 struct ahc_dma_seg *sg; 1646 scb->flags |= SCB_CDB32_PTR;
2150 struct scatterlist *cur_seg; 1647 }
2151 struct scatterlist *end_seg;
2152 int nseg;
2153
2154 cur_seg = (struct scatterlist *)cmd->request_buffer;
2155 nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
2156 cmd->sc_data_direction);
2157 end_seg = cur_seg + nseg;
2158 /* Copy the segments into the SG list. */
2159 sg = scb->sg_list;
2160 /*
2161 * The sg_count may be larger than nseg if
2162 * a transfer crosses a 32bit page.
2163 */
2164 while (cur_seg < end_seg) {
2165 dma_addr_t addr;
2166 bus_size_t len;
2167 int consumed;
2168
2169 addr = sg_dma_address(cur_seg);
2170 len = sg_dma_len(cur_seg);
2171 consumed = ahc_linux_map_seg(ahc, scb,
2172 sg, addr, len);
2173 sg += consumed;
2174 scb->sg_count += consumed;
2175 cur_seg++;
2176 }
2177 sg--;
2178 sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
2179
2180 /*
2181 * Reset the sg list pointer.
2182 */
2183 scb->hscb->sgptr =
2184 ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
2185 1648
2186 /* 1649 scb->platform_data->xfer_len = 0;
2187 * Copy the first SG into the "current" 1650 ahc_set_residual(scb, 0);
2188 * data pointer area. 1651 ahc_set_sense_residual(scb, 0);
2189 */ 1652 scb->sg_count = 0;
2190 scb->hscb->dataptr = scb->sg_list->addr; 1653 if (cmd->use_sg != 0) {
2191 scb->hscb->datacnt = scb->sg_list->len; 1654 struct ahc_dma_seg *sg;
2192 } else if (cmd->request_bufflen != 0) { 1655 struct scatterlist *cur_seg;
2193 struct ahc_dma_seg *sg; 1656 struct scatterlist *end_seg;
1657 int nseg;
1658
1659 cur_seg = (struct scatterlist *)cmd->request_buffer;
1660 nseg = pci_map_sg(ahc->dev_softc, cur_seg, cmd->use_sg,
1661 cmd->sc_data_direction);
1662 end_seg = cur_seg + nseg;
1663 /* Copy the segments into the SG list. */
1664 sg = scb->sg_list;
1665 /*
1666 * The sg_count may be larger than nseg if
1667 * a transfer crosses a 32bit page.
1668 */
1669 while (cur_seg < end_seg) {
2194 dma_addr_t addr; 1670 dma_addr_t addr;
2195 1671 bus_size_t len;
2196 sg = scb->sg_list; 1672 int consumed;
2197 addr = pci_map_single(ahc->dev_softc, 1673
2198 cmd->request_buffer, 1674 addr = sg_dma_address(cur_seg);
2199 cmd->request_bufflen, 1675 len = sg_dma_len(cur_seg);
2200 cmd->sc_data_direction); 1676 consumed = ahc_linux_map_seg(ahc, scb,
2201 scb->platform_data->buf_busaddr = addr; 1677 sg, addr, len);
2202 scb->sg_count = ahc_linux_map_seg(ahc, scb, 1678 sg += consumed;
2203 sg, addr, 1679 scb->sg_count += consumed;
2204 cmd->request_bufflen); 1680 cur_seg++;
2205 sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
2206
2207 /*
2208 * Reset the sg list pointer.
2209 */
2210 scb->hscb->sgptr =
2211 ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
2212
2213 /*
2214 * Copy the first SG into the "current"
2215 * data pointer area.
2216 */
2217 scb->hscb->dataptr = sg->addr;
2218 scb->hscb->datacnt = sg->len;
2219 } else {
2220 scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
2221 scb->hscb->dataptr = 0;
2222 scb->hscb->datacnt = 0;
2223 scb->sg_count = 0;
2224 } 1681 }
1682 sg--;
1683 sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
2225 1684
2226 ahc_sync_sglist(ahc, scb, BUS_DMASYNC_PREWRITE); 1685 /*
2227 LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links); 1686 * Reset the sg list pointer.
2228 dev->openings--; 1687 */
2229 dev->active++; 1688 scb->hscb->sgptr =
2230 dev->commands_issued++; 1689 ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
2231 if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0) 1690
2232 dev->commands_since_idle_or_otag++; 1691 /*
1692 * Copy the first SG into the "current"
1693 * data pointer area.
1694 */
1695 scb->hscb->dataptr = scb->sg_list->addr;
1696 scb->hscb->datacnt = scb->sg_list->len;
1697 } else if (cmd->request_bufflen != 0) {
1698 struct ahc_dma_seg *sg;
1699 dma_addr_t addr;
1700
1701 sg = scb->sg_list;
1702 addr = pci_map_single(ahc->dev_softc,
1703 cmd->request_buffer,
1704 cmd->request_bufflen,
1705 cmd->sc_data_direction);
1706 scb->platform_data->buf_busaddr = addr;
1707 scb->sg_count = ahc_linux_map_seg(ahc, scb,
1708 sg, addr,
1709 cmd->request_bufflen);
1710 sg->len |= ahc_htole32(AHC_DMA_LAST_SEG);
2233 1711
2234 /* 1712 /*
2235 * We only allow one untagged transaction 1713 * Reset the sg list pointer.
2236 * per target in the initiator role unless
2237 * we are storing a full busy target *lun*
2238 * table in SCB space.
2239 */ 1714 */
2240 if ((scb->hscb->control & (TARGET_SCB|TAG_ENB)) == 0 1715 scb->hscb->sgptr =
2241 && (ahc->features & AHC_SCB_BTT) == 0) { 1716 ahc_htole32(scb->sg_list_phys | SG_FULL_RESID);
2242 struct scb_tailq *untagged_q; 1717
2243 int target_offset; 1718 /*
2244 1719 * Copy the first SG into the "current"
2245 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb); 1720 * data pointer area.
2246 untagged_q = &(ahc->untagged_queues[target_offset]); 1721 */
2247 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe); 1722 scb->hscb->dataptr = sg->addr;
2248 scb->flags |= SCB_UNTAGGEDQ; 1723 scb->hscb->datacnt = sg->len;
2249 if (TAILQ_FIRST(untagged_q) != scb) 1724 } else {
2250 continue; 1725 scb->hscb->sgptr = ahc_htole32(SG_LIST_NULL);
2251 } 1726 scb->hscb->dataptr = 0;
2252 scb->flags |= SCB_ACTIVE; 1727 scb->hscb->datacnt = 0;
2253 ahc_queue_scb(ahc, scb); 1728 scb->sg_count = 0;
2254 } 1729 }
1730
1731 LIST_INSERT_HEAD(&ahc->pending_scbs, scb, pending_links);
1732 dev->openings--;
1733 dev->active++;
1734 dev->commands_issued++;
1735 if ((dev->flags & AHC_DEV_PERIODIC_OTAG) != 0)
1736 dev->commands_since_idle_or_otag++;
1737
1738 scb->flags |= SCB_ACTIVE;
1739 if (untagged_q) {
1740 TAILQ_INSERT_TAIL(untagged_q, scb, links.tqe);
1741 scb->flags |= SCB_UNTAGGEDQ;
1742 }
1743 ahc_queue_scb(ahc, scb);
1744 return 0;
2255} 1745}
2256 1746
2257/* 1747/*
@@ -2267,9 +1757,6 @@ ahc_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
2267 ahc = (struct ahc_softc *) dev_id; 1757 ahc = (struct ahc_softc *) dev_id;
2268 ahc_lock(ahc, &flags); 1758 ahc_lock(ahc, &flags);
2269 ours = ahc_intr(ahc); 1759 ours = ahc_intr(ahc);
2270 if (ahc_linux_next_device_to_run(ahc) != NULL)
2271 ahc_schedule_runq(ahc);
2272 ahc_linux_run_complete_queue(ahc);
2273 ahc_unlock(ahc, &flags); 1760 ahc_unlock(ahc, &flags);
2274 return IRQ_RETVAL(ours); 1761 return IRQ_RETVAL(ours);
2275} 1762}
@@ -2278,8 +1765,6 @@ void
2278ahc_platform_flushwork(struct ahc_softc *ahc) 1765ahc_platform_flushwork(struct ahc_softc *ahc)
2279{ 1766{
2280 1767
2281 while (ahc_linux_run_complete_queue(ahc) != NULL)
2282 ;
2283} 1768}
2284 1769
2285static struct ahc_linux_target* 1770static struct ahc_linux_target*
@@ -2348,9 +1833,6 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
2348 if (dev == NULL) 1833 if (dev == NULL)
2349 return (NULL); 1834 return (NULL);
2350 memset(dev, 0, sizeof(*dev)); 1835 memset(dev, 0, sizeof(*dev));
2351 init_timer(&dev->timer);
2352 TAILQ_INIT(&dev->busyq);
2353 dev->flags = AHC_DEV_UNCONFIGURED;
2354 dev->lun = lun; 1836 dev->lun = lun;
2355 dev->target = targ; 1837 dev->target = targ;
2356 1838
@@ -2373,7 +1855,7 @@ ahc_linux_alloc_device(struct ahc_softc *ahc,
2373} 1855}
2374 1856
2375static void 1857static void
2376__ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev) 1858ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
2377{ 1859{
2378 struct ahc_linux_target *targ; 1860 struct ahc_linux_target *targ;
2379 1861
@@ -2385,13 +1867,6 @@ __ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
2385 ahc_linux_free_target(ahc, targ); 1867 ahc_linux_free_target(ahc, targ);
2386} 1868}
2387 1869
2388static void
2389ahc_linux_free_device(struct ahc_softc *ahc, struct ahc_linux_device *dev)
2390{
2391 del_timer_sync(&dev->timer);
2392 __ahc_linux_free_device(ahc, dev);
2393}
2394
2395void 1870void
2396ahc_send_async(struct ahc_softc *ahc, char channel, 1871ahc_send_async(struct ahc_softc *ahc, char channel,
2397 u_int target, u_int lun, ac_code code, void *arg) 1872 u_int target, u_int lun, ac_code code, void *arg)
@@ -2463,28 +1938,9 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
2463 } 1938 }
2464 case AC_SENT_BDR: 1939 case AC_SENT_BDR:
2465 { 1940 {
2466#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
2467 WARN_ON(lun != CAM_LUN_WILDCARD); 1941 WARN_ON(lun != CAM_LUN_WILDCARD);
2468 scsi_report_device_reset(ahc->platform_data->host, 1942 scsi_report_device_reset(ahc->platform_data->host,
2469 channel - 'A', target); 1943 channel - 'A', target);
2470#else
2471 Scsi_Device *scsi_dev;
2472
2473 /*
2474 * Find the SCSI device associated with this
2475 * request and indicate that a UA is expected.
2476 */
2477 for (scsi_dev = ahc->platform_data->host->host_queue;
2478 scsi_dev != NULL; scsi_dev = scsi_dev->next) {
2479 if (channel - 'A' == scsi_dev->channel
2480 && target == scsi_dev->id
2481 && (lun == CAM_LUN_WILDCARD
2482 || lun == scsi_dev->lun)) {
2483 scsi_dev->was_reset = 1;
2484 scsi_dev->expecting_cc_ua = 1;
2485 }
2486 }
2487#endif
2488 break; 1944 break;
2489 } 1945 }
2490 case AC_BUS_RESET: 1946 case AC_BUS_RESET:
@@ -2504,7 +1960,7 @@ ahc_send_async(struct ahc_softc *ahc, char channel,
2504void 1960void
2505ahc_done(struct ahc_softc *ahc, struct scb *scb) 1961ahc_done(struct ahc_softc *ahc, struct scb *scb)
2506{ 1962{
2507 Scsi_Cmnd *cmd; 1963 struct scsi_cmnd *cmd;
2508 struct ahc_linux_device *dev; 1964 struct ahc_linux_device *dev;
2509 1965
2510 LIST_REMOVE(scb, pending_links); 1966 LIST_REMOVE(scb, pending_links);
@@ -2515,7 +1971,7 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
2515 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb); 1971 target_offset = SCB_GET_TARGET_OFFSET(ahc, scb);
2516 untagged_q = &(ahc->untagged_queues[target_offset]); 1972 untagged_q = &(ahc->untagged_queues[target_offset]);
2517 TAILQ_REMOVE(untagged_q, scb, links.tqe); 1973 TAILQ_REMOVE(untagged_q, scb, links.tqe);
2518 ahc_run_untagged_queue(ahc, untagged_q); 1974 BUG_ON(!TAILQ_EMPTY(untagged_q));
2519 } 1975 }
2520 1976
2521 if ((scb->flags & SCB_ACTIVE) == 0) { 1977 if ((scb->flags & SCB_ACTIVE) == 0) {
@@ -2583,8 +2039,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
2583 } 2039 }
2584 } else if (ahc_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) { 2040 } else if (ahc_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
2585 ahc_linux_handle_scsi_status(ahc, dev, scb); 2041 ahc_linux_handle_scsi_status(ahc, dev, scb);
2586 } else if (ahc_get_transaction_status(scb) == CAM_SEL_TIMEOUT) {
2587 dev->flags |= AHC_DEV_UNCONFIGURED;
2588 } 2042 }
2589 2043
2590 if (dev->openings == 1 2044 if (dev->openings == 1
@@ -2606,16 +2060,6 @@ ahc_done(struct ahc_softc *ahc, struct scb *scb)
2606 if (dev->active == 0) 2060 if (dev->active == 0)
2607 dev->commands_since_idle_or_otag = 0; 2061 dev->commands_since_idle_or_otag = 0;
2608 2062
2609 if (TAILQ_EMPTY(&dev->busyq)) {
2610 if ((dev->flags & AHC_DEV_UNCONFIGURED) != 0
2611 && dev->active == 0
2612 && (dev->flags & AHC_DEV_TIMER_ACTIVE) == 0)
2613 ahc_linux_free_device(ahc, dev);
2614 } else if ((dev->flags & AHC_DEV_ON_RUN_LIST) == 0) {
2615 TAILQ_INSERT_TAIL(&ahc->platform_data->device_runq, dev, links);
2616 dev->flags |= AHC_DEV_ON_RUN_LIST;
2617 }
2618
2619 if ((scb->flags & SCB_RECOVERY_SCB) != 0) { 2063 if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
2620 printf("Recovery SCB completes\n"); 2064 printf("Recovery SCB completes\n");
2621 if (ahc_get_transaction_status(scb) == CAM_BDR_SENT 2065 if (ahc_get_transaction_status(scb) == CAM_BDR_SENT
@@ -2659,7 +2103,7 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
2659 case SCSI_STATUS_CHECK_COND: 2103 case SCSI_STATUS_CHECK_COND:
2660 case SCSI_STATUS_CMD_TERMINATED: 2104 case SCSI_STATUS_CMD_TERMINATED:
2661 { 2105 {
2662 Scsi_Cmnd *cmd; 2106 struct scsi_cmnd *cmd;
2663 2107
2664 /* 2108 /*
2665 * Copy sense information to the OS's cmd 2109 * Copy sense information to the OS's cmd
@@ -2754,52 +2198,15 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
2754 ahc_platform_set_tags(ahc, &devinfo, 2198 ahc_platform_set_tags(ahc, &devinfo,
2755 (dev->flags & AHC_DEV_Q_BASIC) 2199 (dev->flags & AHC_DEV_Q_BASIC)
2756 ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED); 2200 ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED);
2757 /* FALLTHROUGH */
2758 }
2759 case SCSI_STATUS_BUSY:
2760 {
2761 /*
2762 * Set a short timer to defer sending commands for
2763 * a bit since Linux will not delay in this case.
2764 */
2765 if ((dev->flags & AHC_DEV_TIMER_ACTIVE) != 0) {
2766 printf("%s:%c:%d: Device Timer still active during "
2767 "busy processing\n", ahc_name(ahc),
2768 dev->target->channel, dev->target->target);
2769 break;
2770 }
2771 dev->flags |= AHC_DEV_TIMER_ACTIVE;
2772 dev->qfrozen++;
2773 init_timer(&dev->timer);
2774 dev->timer.data = (u_long)dev;
2775 dev->timer.expires = jiffies + (HZ/2);
2776 dev->timer.function = ahc_linux_dev_timed_unfreeze;
2777 add_timer(&dev->timer);
2778 break; 2201 break;
2779 } 2202 }
2780 } 2203 }
2781} 2204}
2782 2205
2783static void 2206static void
2784ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd) 2207ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, struct scsi_cmnd *cmd)
2785{ 2208{
2786 /* 2209 /*
2787 * Typically, the complete queue has very few entries
2788 * queued to it before the queue is emptied by
2789 * ahc_linux_run_complete_queue, so sorting the entries
2790 * by generation number should be inexpensive.
2791 * We perform the sort so that commands that complete
2792 * with an error are retuned in the order origionally
2793 * queued to the controller so that any subsequent retries
2794 * are performed in order. The underlying ahc routines do
2795 * not guarantee the order that aborted commands will be
2796 * returned to us.
2797 */
2798 struct ahc_completeq *completeq;
2799 struct ahc_cmd *list_cmd;
2800 struct ahc_cmd *acmd;
2801
2802 /*
2803 * Map CAM error codes into Linux Error codes. We 2210 * Map CAM error codes into Linux Error codes. We
2804 * avoid the conversion so that the DV code has the 2211 * avoid the conversion so that the DV code has the
2805 * full error information available when making 2212 * full error information available when making
@@ -2852,26 +2259,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
2852 new_status = DID_ERROR; 2259 new_status = DID_ERROR;
2853 break; 2260 break;
2854 case CAM_REQUEUE_REQ: 2261 case CAM_REQUEUE_REQ:
2855 /* 2262 new_status = DID_REQUEUE;
2856 * If we want the request requeued, make sure there
2857 * are sufficent retries. In the old scsi error code,
2858 * we used to be able to specify a result code that
2859 * bypassed the retry count. Now we must use this
2860 * hack. We also "fake" a check condition with
2861 * a sense code of ABORTED COMMAND. This seems to
2862 * evoke a retry even if this command is being sent
2863 * via the eh thread. Ick! Ick! Ick!
2864 */
2865 if (cmd->retries > 0)
2866 cmd->retries--;
2867 new_status = DID_OK;
2868 ahc_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND);
2869 cmd->result |= (DRIVER_SENSE << 24);
2870 memset(cmd->sense_buffer, 0,
2871 sizeof(cmd->sense_buffer));
2872 cmd->sense_buffer[0] = SSD_ERRCODE_VALID
2873 | SSD_CURRENT_ERROR;
2874 cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND;
2875 break; 2263 break;
2876 default: 2264 default:
2877 /* We should never get here */ 2265 /* We should never get here */
@@ -2882,17 +2270,7 @@ ahc_linux_queue_cmd_complete(struct ahc_softc *ahc, Scsi_Cmnd *cmd)
2882 ahc_cmd_set_transaction_status(cmd, new_status); 2270 ahc_cmd_set_transaction_status(cmd, new_status);
2883 } 2271 }
2884 2272
2885 completeq = &ahc->platform_data->completeq; 2273 cmd->scsi_done(cmd);
2886 list_cmd = TAILQ_FIRST(completeq);
2887 acmd = (struct ahc_cmd *)cmd;
2888 while (list_cmd != NULL
2889 && acmd_scsi_cmd(list_cmd).serial_number
2890 < acmd_scsi_cmd(acmd).serial_number)
2891 list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe);
2892 if (list_cmd != NULL)
2893 TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe);
2894 else
2895 TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe);
2896} 2274}
2897 2275
2898static void 2276static void
@@ -2940,7 +2318,6 @@ ahc_linux_release_simq(u_long arg)
2940 ahc->platform_data->qfrozen--; 2318 ahc->platform_data->qfrozen--;
2941 if (ahc->platform_data->qfrozen == 0) 2319 if (ahc->platform_data->qfrozen == 0)
2942 unblock_reqs = 1; 2320 unblock_reqs = 1;
2943 ahc_schedule_runq(ahc);
2944 ahc_unlock(ahc, &s); 2321 ahc_unlock(ahc, &s);
2945 /* 2322 /*
2946 * There is still a race here. The mid-layer 2323 * There is still a race here. The mid-layer
@@ -2952,37 +2329,12 @@ ahc_linux_release_simq(u_long arg)
2952 scsi_unblock_requests(ahc->platform_data->host); 2329 scsi_unblock_requests(ahc->platform_data->host);
2953} 2330}
2954 2331
2955static void
2956ahc_linux_dev_timed_unfreeze(u_long arg)
2957{
2958 struct ahc_linux_device *dev;
2959 struct ahc_softc *ahc;
2960 u_long s;
2961
2962 dev = (struct ahc_linux_device *)arg;
2963 ahc = dev->target->ahc;
2964 ahc_lock(ahc, &s);
2965 dev->flags &= ~AHC_DEV_TIMER_ACTIVE;
2966 if (dev->qfrozen > 0)
2967 dev->qfrozen--;
2968 if (dev->qfrozen == 0
2969 && (dev->flags & AHC_DEV_ON_RUN_LIST) == 0)
2970 ahc_linux_run_device_queue(ahc, dev);
2971 if (TAILQ_EMPTY(&dev->busyq)
2972 && dev->active == 0)
2973 __ahc_linux_free_device(ahc, dev);
2974 ahc_unlock(ahc, &s);
2975}
2976
2977static int 2332static int
2978ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag) 2333ahc_linux_queue_recovery_cmd(struct scsi_cmnd *cmd, scb_flag flag)
2979{ 2334{
2980 struct ahc_softc *ahc; 2335 struct ahc_softc *ahc;
2981 struct ahc_cmd *acmd;
2982 struct ahc_cmd *list_acmd;
2983 struct ahc_linux_device *dev; 2336 struct ahc_linux_device *dev;
2984 struct scb *pending_scb; 2337 struct scb *pending_scb;
2985 u_long s;
2986 u_int saved_scbptr; 2338 u_int saved_scbptr;
2987 u_int active_scb_index; 2339 u_int active_scb_index;
2988 u_int last_phase; 2340 u_int last_phase;
@@ -2998,7 +2350,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
2998 paused = FALSE; 2350 paused = FALSE;
2999 wait = FALSE; 2351 wait = FALSE;
3000 ahc = *(struct ahc_softc **)cmd->device->host->hostdata; 2352 ahc = *(struct ahc_softc **)cmd->device->host->hostdata;
3001 acmd = (struct ahc_cmd *)cmd;
3002 2353
3003 printf("%s:%d:%d:%d: Attempting to queue a%s message\n", 2354 printf("%s:%d:%d:%d: Attempting to queue a%s message\n",
3004 ahc_name(ahc), cmd->device->channel, 2355 ahc_name(ahc), cmd->device->channel,
@@ -3011,22 +2362,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
3011 printf("\n"); 2362 printf("\n");
3012 2363
3013 /* 2364 /*
3014 * In all versions of Linux, we have to work around
3015 * a major flaw in how the mid-layer is locked down
3016 * if we are to sleep successfully in our error handler
3017 * while allowing our interrupt handler to run. Since
3018 * the midlayer acquires either the io_request_lock or
3019 * our lock prior to calling us, we must use the
3020 * spin_unlock_irq() method for unlocking our lock.
3021 * This will force interrupts to be enabled on the
3022 * current CPU. Since the EH thread should not have
3023 * been running with CPU interrupts disabled other than
3024 * by acquiring either the io_request_lock or our own
3025 * lock, this *should* be safe.
3026 */
3027 ahc_midlayer_entrypoint_lock(ahc, &s);
3028
3029 /*
3030 * First determine if we currently own this command. 2365 * First determine if we currently own this command.
3031 * Start by searching the device queue. If not found 2366 * Start by searching the device queue. If not found
3032 * there, check the pending_scb list. If not found 2367 * there, check the pending_scb list. If not found
@@ -3034,7 +2369,7 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
3034 * command, return success. 2369 * command, return success.
3035 */ 2370 */
3036 dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id, 2371 dev = ahc_linux_get_device(ahc, cmd->device->channel, cmd->device->id,
3037 cmd->device->lun, /*alloc*/FALSE); 2372 cmd->device->lun);
3038 2373
3039 if (dev == NULL) { 2374 if (dev == NULL) {
3040 /* 2375 /*
@@ -3048,24 +2383,6 @@ ahc_linux_queue_recovery_cmd(Scsi_Cmnd *cmd, scb_flag flag)
3048 goto no_cmd; 2383 goto no_cmd;
3049 } 2384 }
3050 2385
3051 TAILQ_FOREACH(list_acmd, &dev->busyq, acmd_links.tqe) {
3052 if (list_acmd == acmd)
3053 break;
3054 }
3055
3056 if (list_acmd != NULL) {
3057 printf("%s:%d:%d:%d: Command found on device queue\n",
3058 ahc_name(ahc), cmd->device->channel, cmd->device->id,
3059 cmd->device->lun);
3060 if (flag == SCB_ABORT) {
3061 TAILQ_REMOVE(&dev->busyq, list_acmd, acmd_links.tqe);
3062 cmd->result = DID_ABORT << 16;
3063 ahc_linux_queue_cmd_complete(ahc, cmd);
3064 retval = SUCCESS;
3065 goto done;
3066 }
3067 }
3068
3069 if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0 2386 if ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED)) == 0
3070 && ahc_search_untagged_queues(ahc, cmd, cmd->device->id, 2387 && ahc_search_untagged_queues(ahc, cmd, cmd->device->id,
3071 cmd->device->channel + 'A', 2388 cmd->device->channel + 'A',
@@ -3299,53 +2616,42 @@ done:
3299 } 2616 }
3300 spin_lock_irq(&ahc->platform_data->spin_lock); 2617 spin_lock_irq(&ahc->platform_data->spin_lock);
3301 } 2618 }
3302 ahc_schedule_runq(ahc);
3303 ahc_linux_run_complete_queue(ahc);
3304 ahc_midlayer_entrypoint_unlock(ahc, &s);
3305 return (retval); 2619 return (retval);
3306} 2620}
3307 2621
3308void 2622void
3309ahc_platform_dump_card_state(struct ahc_softc *ahc) 2623ahc_platform_dump_card_state(struct ahc_softc *ahc)
3310{ 2624{
3311 struct ahc_linux_device *dev; 2625}
3312 int channel;
3313 int maxchannel;
3314 int target;
3315 int maxtarget;
3316 int lun;
3317 int i;
3318
3319 maxchannel = (ahc->features & AHC_TWIN) ? 1 : 0;
3320 maxtarget = (ahc->features & AHC_WIDE) ? 15 : 7;
3321 for (channel = 0; channel <= maxchannel; channel++) {
3322 2626
3323 for (target = 0; target <=maxtarget; target++) { 2627static void ahc_linux_exit(void);
3324 2628
3325 for (lun = 0; lun < AHC_NUM_LUNS; lun++) { 2629static void ahc_linux_get_width(struct scsi_target *starget)
3326 struct ahc_cmd *acmd; 2630{
2631 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2632 struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
2633 struct ahc_tmode_tstate *tstate;
2634 struct ahc_initiator_tinfo *tinfo
2635 = ahc_fetch_transinfo(ahc,
2636 starget->channel + 'A',
2637 shost->this_id, starget->id, &tstate);
2638 spi_width(starget) = tinfo->curr.width;
2639}
3327 2640
3328 dev = ahc_linux_get_device(ahc, channel, target, 2641static void ahc_linux_set_width(struct scsi_target *starget, int width)
3329 lun, /*alloc*/FALSE); 2642{
3330 if (dev == NULL) 2643 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
3331 continue; 2644 struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
2645 struct ahc_devinfo devinfo;
2646 unsigned long flags;
3332 2647
3333 printf("DevQ(%d:%d:%d): ", 2648 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3334 channel, target, lun); 2649 starget->channel + 'A', ROLE_INITIATOR);
3335 i = 0; 2650 ahc_lock(ahc, &flags);
3336 TAILQ_FOREACH(acmd, &dev->busyq, 2651 ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
3337 acmd_links.tqe) { 2652 ahc_unlock(ahc, &flags);
3338 if (i++ > AHC_SCB_MAX)
3339 break;
3340 }
3341 printf("%d waiting\n", i);
3342 }
3343 }
3344 }
3345} 2653}
3346 2654
3347static void ahc_linux_exit(void);
3348
3349static void ahc_linux_get_period(struct scsi_target *starget) 2655static void ahc_linux_get_period(struct scsi_target *starget)
3350{ 2656{
3351 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2657 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
@@ -3376,8 +2682,21 @@ static void ahc_linux_set_period(struct scsi_target *starget, int period)
3376 if (offset == 0) 2682 if (offset == 0)
3377 offset = MAX_OFFSET; 2683 offset = MAX_OFFSET;
3378 2684
2685 if (period < 9)
2686 period = 9; /* 12.5ns is our minimum */
2687 if (period == 9)
2688 ppr_options |= MSG_EXT_PPR_DT_REQ;
2689
3379 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2690 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3380 starget->channel + 'A', ROLE_INITIATOR); 2691 starget->channel + 'A', ROLE_INITIATOR);
2692
2693 /* all PPR requests apart from QAS require wide transfers */
2694 if (ppr_options & ~MSG_EXT_PPR_QAS_REQ) {
2695 ahc_linux_get_width(starget);
2696 if (spi_width(starget) == 0)
2697 ppr_options &= MSG_EXT_PPR_QAS_REQ;
2698 }
2699
3381 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT); 2700 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
3382 ahc_lock(ahc, &flags); 2701 ahc_lock(ahc, &flags);
3383 ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset, 2702 ahc_set_syncrate(ahc, &devinfo, syncrate, period, offset,
@@ -3425,32 +2744,6 @@ static void ahc_linux_set_offset(struct scsi_target *starget, int offset)
3425 ahc_unlock(ahc, &flags); 2744 ahc_unlock(ahc, &flags);
3426} 2745}
3427 2746
3428static void ahc_linux_get_width(struct scsi_target *starget)
3429{
3430 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
3431 struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
3432 struct ahc_tmode_tstate *tstate;
3433 struct ahc_initiator_tinfo *tinfo
3434 = ahc_fetch_transinfo(ahc,
3435 starget->channel + 'A',
3436 shost->this_id, starget->id, &tstate);
3437 spi_width(starget) = tinfo->curr.width;
3438}
3439
3440static void ahc_linux_set_width(struct scsi_target *starget, int width)
3441{
3442 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
3443 struct ahc_softc *ahc = *((struct ahc_softc **)shost->hostdata);
3444 struct ahc_devinfo devinfo;
3445 unsigned long flags;
3446
3447 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3448 starget->channel + 'A', ROLE_INITIATOR);
3449 ahc_lock(ahc, &flags);
3450 ahc_set_width(ahc, &devinfo, width, AHC_TRANS_GOAL, FALSE);
3451 ahc_unlock(ahc, &flags);
3452}
3453
3454static void ahc_linux_get_dt(struct scsi_target *starget) 2747static void ahc_linux_get_dt(struct scsi_target *starget)
3455{ 2748{
3456 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2749 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
@@ -3479,10 +2772,15 @@ static void ahc_linux_set_dt(struct scsi_target *starget, int dt)
3479 unsigned long flags; 2772 unsigned long flags;
3480 struct ahc_syncrate *syncrate; 2773 struct ahc_syncrate *syncrate;
3481 2774
2775 if (dt) {
2776 period = 9; /* 12.5ns is the only period valid for DT */
2777 ppr_options |= MSG_EXT_PPR_DT_REQ;
2778 } else if (period == 9)
2779 period = 10; /* if resetting DT, period must be >= 25ns */
2780
3482 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2781 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3483 starget->channel + 'A', ROLE_INITIATOR); 2782 starget->channel + 'A', ROLE_INITIATOR);
3484 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, 2783 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options,AHC_SYNCRATE_DT);
3485 dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
3486 ahc_lock(ahc, &flags); 2784 ahc_lock(ahc, &flags);
3487 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset, 2785 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
3488 ppr_options, AHC_TRANS_GOAL, FALSE); 2786 ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3514,7 +2812,6 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
3514 unsigned int ppr_options = tinfo->curr.ppr_options 2812 unsigned int ppr_options = tinfo->curr.ppr_options
3515 & ~MSG_EXT_PPR_QAS_REQ; 2813 & ~MSG_EXT_PPR_QAS_REQ;
3516 unsigned int period = tinfo->curr.period; 2814 unsigned int period = tinfo->curr.period;
3517 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
3518 unsigned long flags; 2815 unsigned long flags;
3519 struct ahc_syncrate *syncrate; 2816 struct ahc_syncrate *syncrate;
3520 2817
@@ -3523,8 +2820,7 @@ static void ahc_linux_set_qas(struct scsi_target *starget, int qas)
3523 2820
3524 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2821 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3525 starget->channel + 'A', ROLE_INITIATOR); 2822 starget->channel + 'A', ROLE_INITIATOR);
3526 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, 2823 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
3527 dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
3528 ahc_lock(ahc, &flags); 2824 ahc_lock(ahc, &flags);
3529 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset, 2825 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
3530 ppr_options, AHC_TRANS_GOAL, FALSE); 2826 ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3556,7 +2852,6 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
3556 unsigned int ppr_options = tinfo->curr.ppr_options 2852 unsigned int ppr_options = tinfo->curr.ppr_options
3557 & ~MSG_EXT_PPR_IU_REQ; 2853 & ~MSG_EXT_PPR_IU_REQ;
3558 unsigned int period = tinfo->curr.period; 2854 unsigned int period = tinfo->curr.period;
3559 unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
3560 unsigned long flags; 2855 unsigned long flags;
3561 struct ahc_syncrate *syncrate; 2856 struct ahc_syncrate *syncrate;
3562 2857
@@ -3565,8 +2860,7 @@ static void ahc_linux_set_iu(struct scsi_target *starget, int iu)
3565 2860
3566 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0, 2861 ahc_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
3567 starget->channel + 'A', ROLE_INITIATOR); 2862 starget->channel + 'A', ROLE_INITIATOR);
3568 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, 2863 syncrate = ahc_find_syncrate(ahc, &period, &ppr_options, AHC_SYNCRATE_DT);
3569 dt ? AHC_SYNCRATE_DT : AHC_SYNCRATE_ULTRA2);
3570 ahc_lock(ahc, &flags); 2864 ahc_lock(ahc, &flags);
3571 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset, 2865 ahc_set_syncrate(ahc, &devinfo, syncrate, period, tinfo->curr.offset,
3572 ppr_options, AHC_TRANS_GOAL, FALSE); 2866 ppr_options, AHC_TRANS_GOAL, FALSE);
@@ -3599,7 +2893,6 @@ static struct spi_function_template ahc_linux_transport_functions = {
3599static int __init 2893static int __init
3600ahc_linux_init(void) 2894ahc_linux_init(void)
3601{ 2895{
3602#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
3603 ahc_linux_transport_template = spi_attach_transport(&ahc_linux_transport_functions); 2896 ahc_linux_transport_template = spi_attach_transport(&ahc_linux_transport_functions);
3604 if (!ahc_linux_transport_template) 2897 if (!ahc_linux_transport_template)
3605 return -ENODEV; 2898 return -ENODEV;
@@ -3608,29 +2901,11 @@ ahc_linux_init(void)
3608 spi_release_transport(ahc_linux_transport_template); 2901 spi_release_transport(ahc_linux_transport_template);
3609 ahc_linux_exit(); 2902 ahc_linux_exit();
3610 return -ENODEV; 2903 return -ENODEV;
3611#else
3612 scsi_register_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
3613 if (aic7xxx_driver_template.present == 0) {
3614 scsi_unregister_module(MODULE_SCSI_HA,
3615 &aic7xxx_driver_template);
3616 return (-ENODEV);
3617 }
3618
3619 return (0);
3620#endif
3621} 2904}
3622 2905
3623static void 2906static void
3624ahc_linux_exit(void) 2907ahc_linux_exit(void)
3625{ 2908{
3626#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
3627 /*
3628 * In 2.4 we have to unregister from the PCI core _after_
3629 * unregistering from the scsi midlayer to avoid dangling
3630 * references.
3631 */
3632 scsi_unregister_module(MODULE_SCSI_HA, &aic7xxx_driver_template);
3633#endif
3634 ahc_linux_pci_exit(); 2909 ahc_linux_pci_exit();
3635 ahc_linux_eisa_exit(); 2910 ahc_linux_eisa_exit();
3636 spi_release_transport(ahc_linux_transport_template); 2911 spi_release_transport(ahc_linux_transport_template);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-28 09:51:25 -0500