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amr.c (58496) amr.c (58883)
1/*-
2 * Copyright (c) 1999 Michael Smith
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 9 unchanged lines hidden (view full) ---

18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
1/*-
2 * Copyright (c) 1999 Michael Smith
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 9 unchanged lines hidden (view full) ---

18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/amr/amr.c 58496 2000-03-23 18:33:19Z msmith $
26 * $FreeBSD: head/sys/dev/amr/amr.c 58883 2000-04-01 00:35:15Z msmith $
27 */
28
29/*
30 * Driver for the AMI MegaRaid family of controllers
31 */
32
33#include <sys/param.h>
34#include <sys/systm.h>

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103/*
104 * Command buffer allocation.
105 */
106static struct amr_command *amr_alloccmd(struct amr_softc *sc);
107static void amr_releasecmd(struct amr_command *ac);
108static void amr_freecmd(struct amr_command *ac);
109
110/*
27 */
28
29/*
30 * Driver for the AMI MegaRaid family of controllers
31 */
32
33#include <sys/param.h>
34#include <sys/systm.h>

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103/*
104 * Command buffer allocation.
105 */
106static struct amr_command *amr_alloccmd(struct amr_softc *sc);
107static void amr_releasecmd(struct amr_command *ac);
108static void amr_freecmd(struct amr_command *ac);
109
110/*
111 * Status monitoring
112 */
113static void amr_periodic(void *data);
114
115/*
111 * Interface-specific shims
112 */
113static void amr_quartz_submit_command(struct amr_softc *sc);
114static int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave);
115static void amr_quartz_attach_mailbox(struct amr_softc *sc);
116
117static void amr_std_submit_command(struct amr_softc *sc);
118static int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave);

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137void
138amr_free(struct amr_softc *sc)
139{
140 struct amr_command *ac;
141 u_int8_t *p;
142
143 debug("called");
144
116 * Interface-specific shims
117 */
118static void amr_quartz_submit_command(struct amr_softc *sc);
119static int amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave);
120static void amr_quartz_attach_mailbox(struct amr_softc *sc);
121
122static void amr_std_submit_command(struct amr_softc *sc);
123static int amr_std_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave);

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142void
143amr_free(struct amr_softc *sc)
144{
145 struct amr_command *ac;
146 u_int8_t *p;
147
148 debug("called");
149
150 /* cancel status timeout */
151 untimeout(amr_periodic, sc, sc->amr_timeout);
145
146 /* throw away any command buffers */
147 while ((ac = TAILQ_FIRST(&sc->amr_freecmds)) != NULL) {
148 TAILQ_REMOVE(&sc->amr_freecmds, ac, ac_link);
149 amr_freecmd(ac);
150 }
151
152 /* destroy data-transfer DMA tag */

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400 return(ENXIO);
401
402 /*
403 * Rebuild the scatter/gather buffers now we know how many we need.
404 */
405 if (amr_sglist_map(sc))
406 return(ENXIO);
407
152
153 /* throw away any command buffers */
154 while ((ac = TAILQ_FIRST(&sc->amr_freecmds)) != NULL) {
155 TAILQ_REMOVE(&sc->amr_freecmds, ac, ac_link);
156 amr_freecmd(ac);
157 }
158
159 /* destroy data-transfer DMA tag */

--- 247 unchanged lines hidden (view full) ---

407 return(ENXIO);
408
409 /*
410 * Rebuild the scatter/gather buffers now we know how many we need.
411 */
412 if (amr_sglist_map(sc))
413 return(ENXIO);
414
415 /*
416 * Start the timeout routine.
417 */
418 sc->amr_timeout = timeout(amr_periodic, sc, hz);
419
408 return(0);
409}
410
411/********************************************************************************
412 * Locate disk resources and attach children to them.
413 */
414void
415amr_startup(struct amr_softc *sc)

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531 /* delete all our child devices */
532 for (i = 0; i < AMR_MAXLD; i++) {
533 if (sc->amr_drive[i].al_disk != 0) {
534 if ((error = device_delete_child(sc->amr_dev, sc->amr_drive[i].al_disk)) != 0)
535 goto out;
536 sc->amr_drive[i].al_disk = 0;
537 }
538 }
420 return(0);
421}
422
423/********************************************************************************
424 * Locate disk resources and attach children to them.
425 */
426void
427amr_startup(struct amr_softc *sc)

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543 /* delete all our child devices */
544 for (i = 0; i < AMR_MAXLD; i++) {
545 if (sc->amr_drive[i].al_disk != 0) {
546 if ((error = device_delete_child(sc->amr_dev, sc->amr_drive[i].al_disk)) != 0)
547 goto out;
548 sc->amr_drive[i].al_disk = 0;
549 }
550 }
539 bus_generic_detach(sc->amr_dev);
540
541 out:
542 splx(s);
543 return(error);
544}
545
546/********************************************************************************
547 * Bring the controller to a quiescent state, ready for system suspend.

--- 32 unchanged lines hidden (view full) ---

580/*******************************************************************************
581 * Take an interrupt, or be poked by other code to look for interrupt-worthy
582 * status.
583 */
584void
585amr_intr(void *arg)
586{
587 struct amr_softc *sc = (struct amr_softc *)arg;
551
552 out:
553 splx(s);
554 return(error);
555}
556
557/********************************************************************************
558 * Bring the controller to a quiescent state, ready for system suspend.

--- 32 unchanged lines hidden (view full) ---

591/*******************************************************************************
592 * Take an interrupt, or be poked by other code to look for interrupt-worthy
593 * status.
594 */
595void
596amr_intr(void *arg)
597{
598 struct amr_softc *sc = (struct amr_softc *)arg;
588 int worked;
589
599
590 debug("called on %p", sc);
600 debug("called");
591
601
592 /* spin collecting finished commands, process them if we find anything */
593 worked = 0;
594 while (amr_done(sc))
595 worked = 1;
596 if (worked)
597 amr_complete(sc);
602 /* collect finished commands, queue anything waiting */
603 amr_done(sc);
598};
599
600/*******************************************************************************
601 * Receive a buf structure from a child device and queue it on a particular
602 * disk resource, then poke the disk resource to start as much work as it can.
603 */
604int
605amr_submit_buf(struct amr_softc *sc, struct buf *bp)

--- 56 unchanged lines hidden (view full) ---

662amr_submit_ioctl(struct amr_softc *sc, struct amr_logdrive *drive, u_long cmd,
663 caddr_t addr, int32_t flag, struct proc *p)
664{
665 return(ENOTTY);
666}
667
668/********************************************************************************
669 ********************************************************************************
604};
605
606/*******************************************************************************
607 * Receive a buf structure from a child device and queue it on a particular
608 * disk resource, then poke the disk resource to start as much work as it can.
609 */
610int
611amr_submit_buf(struct amr_softc *sc, struct buf *bp)

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668amr_submit_ioctl(struct amr_softc *sc, struct amr_logdrive *drive, u_long cmd,
669 caddr_t addr, int32_t flag, struct proc *p)
670{
671 return(ENOTTY);
672}
673
674/********************************************************************************
675 ********************************************************************************
676 Status Monitoring
677 ********************************************************************************
678 ********************************************************************************/
679
680/********************************************************************************
681 * Perform a periodic check of the controller status
682 */
683static void
684amr_periodic(void *data)
685{
686 struct amr_softc *sc = (struct amr_softc *)data;
687 int s, i;
688
689 debug("called");
690
691
692 /*
693 * Check for commands that are massively late. This will need to be
694 * revisited if/when we deal with eg. device format commands.
695 * The 30 second value is entirely arbitrary.
696 */
697 s = splbio();
698 if (sc->amr_busycmdcount > 0) {
699 for (i = 0; i < AMR_MAXCMD; i++) {
700 /*
701 * If the command has been busy for more than 30 seconds, declare it
702 * wedged and retire it with an error.
703 */
704 if ((sc->amr_busycmd[i] != NULL) &&
705 (sc->amr_busycmd[i]->ac_status == AMR_STATUS_BUSY) &&
706 ((sc->amr_busycmd[i]->ac_stamp + 30) < time_second)) {
707 device_printf(sc->amr_dev, "command %d wedged after 30 seconds\n", i);
708 sc->amr_busycmd[i]->ac_status = AMR_STATUS_WEDGED;
709 amr_completeio(sc->amr_busycmd[i]);
710 }
711 }
712 }
713 splx(s);
714
715 /* reschedule */
716 sc->amr_timeout = timeout(amr_periodic, sc, hz);
717}
718
719
720/********************************************************************************
721 ********************************************************************************
670 Command Wrappers
671 ********************************************************************************
672 ********************************************************************************/
673
674/********************************************************************************
675 * Interrogate the controller for the operational parameters we require.
676 */
677static int

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693 }
694 /* first-time enquiry? */
695 if (sc->amr_maxdrives == 0) {
696 device_printf(sc->amr_dev, "firmware %.4s bios %.4s %dMB memory\n",
697 ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios,
698 ae->ae_adapter.aa_memorysize);
699 }
700 sc->amr_maxdrives = 8;
722 Command Wrappers
723 ********************************************************************************
724 ********************************************************************************/
725
726/********************************************************************************
727 * Interrogate the controller for the operational parameters we require.
728 */
729static int

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745 }
746 /* first-time enquiry? */
747 if (sc->amr_maxdrives == 0) {
748 device_printf(sc->amr_dev, "firmware %.4s bios %.4s %dMB memory\n",
749 ae->ae_adapter.aa_firmware, ae->ae_adapter.aa_bios,
750 ae->ae_adapter.aa_memorysize);
751 }
752 sc->amr_maxdrives = 8;
701 sc->amr_maxio = ae->ae_adapter.aa_maxio;
753
754 /*
755 * Cap the maximum number of outstanding I/Os. AMI's Linux driver doesn't trust
756 * the controller's reported value, and lockups have been seen when we do.
757 */
758 sc->amr_maxio = imin(ae->ae_adapter.aa_maxio, AMR_LIMITCMD);
759
702 for (i = 0; i < ae->ae_ldrv.al_numdrives; i++) {
703 sc->amr_drive[i].al_size = ae->ae_ldrv.al_size[i];
704 sc->amr_drive[i].al_state = ae->ae_ldrv.al_state[i];
705 sc->amr_drive[i].al_properties = ae->ae_ldrv.al_properties[i];
706 debug(" drive %d: %d state %x properties %x\n", i, sc->amr_drive[i].al_size,
707 sc->amr_drive[i].al_state, sc->amr_drive[i].al_properties);
708 }
709 for (; i < AMR_MAXLD; i++)
710 sc->amr_drive[i].al_size = 0xffffffff;
711 free(ae, M_DEVBUF);
712 } else {
760 for (i = 0; i < ae->ae_ldrv.al_numdrives; i++) {
761 sc->amr_drive[i].al_size = ae->ae_ldrv.al_size[i];
762 sc->amr_drive[i].al_state = ae->ae_ldrv.al_state[i];
763 sc->amr_drive[i].al_properties = ae->ae_ldrv.al_properties[i];
764 debug(" drive %d: %d state %x properties %x\n", i, sc->amr_drive[i].al_size,
765 sc->amr_drive[i].al_state, sc->amr_drive[i].al_properties);
766 }
767 for (; i < AMR_MAXLD; i++)
768 sc->amr_drive[i].al_size = 0xffffffff;
769 free(ae, M_DEVBUF);
770 } else {
771 /*
772 * The "40LD" (40 logical drive support) firmware is mentioned in the Linux
773 * driver, but no adapters from AMI appear to support it.
774 */
713 free(buf, M_DEVBUF);
714 sc->amr_maxdrives = 40;
715
716 /* get static product info */
717 if ((buf = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODINFO, 0)) == NULL) {
718 device_printf(sc->amr_dev, "controller supports 40ld but CONFIG_PRODINFO failed\n");
719 return(1);
720 }

--- 38 unchanged lines hidden (view full) ---

759
760 /* build the command proper */
761 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */
762 mbox[0] = cmd;
763 mbox[2] = cmdsub;
764 mbox[3] = cmdqual;
765 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys;
766
775 free(buf, M_DEVBUF);
776 sc->amr_maxdrives = 40;
777
778 /* get static product info */
779 if ((buf = amr_enquiry(sc, 2048, AMR_CMD_CONFIG, AMR_CONFIG_PRODINFO, 0)) == NULL) {
780 device_printf(sc->amr_dev, "controller supports 40ld but CONFIG_PRODINFO failed\n");
781 return(1);
782 }

--- 38 unchanged lines hidden (view full) ---

821
822 /* build the command proper */
823 mbox = (u_int8_t *)&ac->ac_mailbox; /* XXX want a real structure for this? */
824 mbox[0] = cmd;
825 mbox[2] = cmdsub;
826 mbox[3] = cmdqual;
827 ac->ac_mailbox.mb_physaddr = ac->ac_dataphys;
828
767 /* run the command in polled/wait mode as suits the current mode */
768 if ((sc->amr_state & AMR_STATE_INTEN) ? amr_wait_command(ac) : amr_poll_command(ac))
829 /* can't assume that interrupts are going to work here, so play it safe */
830 if (amr_poll_command(ac))
769 goto out;
770 error = ac->ac_status;
771
772 out:
773 if (ac != NULL)
774 amr_releasecmd(ac);
775 if ((error != 0) && (result != NULL)) {
776 free(result, M_DEVBUF);

--- 18 unchanged lines hidden (view full) ---

795 /* get a command slot */
796 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT;
797 if (amr_getslot(ac))
798 goto out;
799
800 /* build the command proper */
801 ac->ac_mailbox.mb_command = AMR_CMD_FLUSH;
802
831 goto out;
832 error = ac->ac_status;
833
834 out:
835 if (ac != NULL)
836 amr_releasecmd(ac);
837 if ((error != 0) && (result != NULL)) {
838 free(result, M_DEVBUF);

--- 18 unchanged lines hidden (view full) ---

857 /* get a command slot */
858 ac->ac_flags |= AMR_CMD_PRIORITY | AMR_CMD_DATAOUT;
859 if (amr_getslot(ac))
860 goto out;
861
862 /* build the command proper */
863 ac->ac_mailbox.mb_command = AMR_CMD_FLUSH;
864
803 /* run the command in polled/wait mode as suits the current mode */
804 if ((sc->amr_state & AMR_STATE_INTEN) ? amr_wait_command(ac) : amr_poll_command(ac))
865 /* we have to poll, as the system may be going down or otherwise damaged */
866 if (amr_poll_command(ac))
805 goto out;
806 error = ac->ac_status;
807
808 out:
809 if (ac != NULL)
810 amr_releasecmd(ac);
811 return(error);
812}

--- 10 unchanged lines hidden (view full) ---

823 struct amr_command *ac;
824 struct amrd_softc *amrd;
825 struct buf *bp;
826 int blkcount;
827 int driveno;
828 int cmd;
829 int s;
830
867 goto out;
868 error = ac->ac_status;
869
870 out:
871 if (ac != NULL)
872 amr_releasecmd(ac);
873 return(error);
874}

--- 10 unchanged lines hidden (view full) ---

885 struct amr_command *ac;
886 struct amrd_softc *amrd;
887 struct buf *bp;
888 int blkcount;
889 int driveno;
890 int cmd;
891 int s;
892
893 /* avoid reentrancy */
894 if (amr_lock_tas(sc, AMR_LOCK_STARTING))
895 return;
896
831 /* spin until something prevents us from doing any work */
832 s = splbio();
833 for (;;) {
834
835 /* see if there's work to be done */
836 if ((bp = bufq_first(&sc->amr_bufq)) == NULL)
837 break;
838 /* get a command */

--- 21 unchanged lines hidden (view full) ---

860 ac->ac_flags |= AMR_CMD_DATAOUT;
861 cmd = AMR_CMD_LWRITE;
862 }
863
864 /* map the command so the controller can work with it */
865 amr_mapcmd(ac);
866
867 /* build a suitable I/O command (assumes 512-byte rounded transfers) */
897 /* spin until something prevents us from doing any work */
898 s = splbio();
899 for (;;) {
900
901 /* see if there's work to be done */
902 if ((bp = bufq_first(&sc->amr_bufq)) == NULL)
903 break;
904 /* get a command */

--- 21 unchanged lines hidden (view full) ---

926 ac->ac_flags |= AMR_CMD_DATAOUT;
927 cmd = AMR_CMD_LWRITE;
928 }
929
930 /* map the command so the controller can work with it */
931 amr_mapcmd(ac);
932
933 /* build a suitable I/O command (assumes 512-byte rounded transfers) */
868 amrd = (struct amrd_softc *)bp->b_driver1;
869 driveno = amrd->amrd_drive - &sc->amr_drive[0];
870 blkcount = bp->b_bcount / AMR_BLKSIZE;
934 amrd = (struct amrd_softc *)bp->b_dev->si_drv1;
935 driveno = amrd->amrd_drive - sc->amr_drive;
936 blkcount = (bp->b_bcount + AMR_BLKSIZE - 1) / AMR_BLKSIZE;
871
872 if ((bp->b_pblkno + blkcount) > sc->amr_drive[driveno].al_size)
873 device_printf(sc->amr_dev, "I/O beyond end of unit (%u,%d > %u)\n",
874 bp->b_pblkno, blkcount, sc->amr_drive[driveno].al_size);
875
876 /*
877 * Build the I/O command.
878 */

--- 8 unchanged lines hidden (view full) ---

887 if (amr_start(ac) != 0) {
888 /* fail the command */
889 ac->ac_status = AMR_STATUS_WEDGED;
890 amr_completeio(ac);
891 }
892 s = splbio();
893 }
894 splx(s);
937
938 if ((bp->b_pblkno + blkcount) > sc->amr_drive[driveno].al_size)
939 device_printf(sc->amr_dev, "I/O beyond end of unit (%u,%d > %u)\n",
940 bp->b_pblkno, blkcount, sc->amr_drive[driveno].al_size);
941
942 /*
943 * Build the I/O command.
944 */

--- 8 unchanged lines hidden (view full) ---

953 if (amr_start(ac) != 0) {
954 /* fail the command */
955 ac->ac_status = AMR_STATUS_WEDGED;
956 amr_completeio(ac);
957 }
958 s = splbio();
959 }
960 splx(s);
961 amr_lock_clr(sc, AMR_LOCK_STARTING);
895}
896
897/********************************************************************************
898 * Handle completion of an I/O command.
899 */
900static void
901amr_completeio(struct amr_command *ac)
902{
903 struct amr_softc *sc = ac->ac_sc;
904 struct buf *bp = (struct buf *)ac->ac_private;
962}
963
964/********************************************************************************
965 * Handle completion of an I/O command.
966 */
967static void
968amr_completeio(struct amr_command *ac)
969{
970 struct amr_softc *sc = ac->ac_sc;
971 struct buf *bp = (struct buf *)ac->ac_private;
972 int notify, release;
973
974 notify = 1;
975 release = 1;
905
906 if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */
907 bp->b_error = EIO;
908 bp->b_flags |= B_ERROR;
909
910 switch(ac->ac_status) {
911 /* XXX need more information on I/O error reasons */
976
977 if (ac->ac_status != AMR_STATUS_SUCCESS) { /* could be more verbose here? */
978 bp->b_error = EIO;
979 bp->b_flags |= B_ERROR;
980
981 switch(ac->ac_status) {
982 /* XXX need more information on I/O error reasons */
983 case AMR_STATUS_LATE:
984 notify = 0; /* we've already notified the parent */
985 break;
986
987 case AMR_STATUS_WEDGED:
988 release = 0; /* the command is still outstanding, we can't release */
989 break;
990
912 default:
913 device_printf(sc->amr_dev, "I/O error - %x\n", ac->ac_status);
914 amr_printcommand(ac);
915 break;
916 }
917 }
991 default:
992 device_printf(sc->amr_dev, "I/O error - %x\n", ac->ac_status);
993 amr_printcommand(ac);
994 break;
995 }
996 }
918 amr_releasecmd(ac);
919 amrd_intr(bp);
997 if (release)
998 amr_releasecmd(ac);
999 if (notify)
1000 amrd_intr(bp);
920}
921
922/********************************************************************************
923 ********************************************************************************
924 Command Processing
925 ********************************************************************************
926 ********************************************************************************/
927

--- 168 unchanged lines hidden (view full) ---

1096 if (ac->ac_flags & AMR_CMD_DATAOUT)
1097 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE);
1098
1099 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap);
1100 }
1101}
1102
1103/********************************************************************************
1001}
1002
1003/********************************************************************************
1004 ********************************************************************************
1005 Command Processing
1006 ********************************************************************************
1007 ********************************************************************************/
1008

--- 168 unchanged lines hidden (view full) ---

1177 if (ac->ac_flags & AMR_CMD_DATAOUT)
1178 bus_dmamap_sync(sc->amr_buffer_dmat, ac->ac_dmamap, BUS_DMASYNC_POSTWRITE);
1179
1180 bus_dmamap_unload(sc->amr_buffer_dmat, ac->ac_dmamap);
1181 }
1182}
1183
1184/********************************************************************************
1104 * Take a command and give it to the controller. Take care of any completed
1105 * commands we encouter while waiting.
1185 * Take a command and give it to the controller.
1106 */
1107static int
1108amr_start(struct amr_command *ac)
1109{
1110 struct amr_softc *sc = ac->ac_sc;
1186 */
1187static int
1188amr_start(struct amr_command *ac)
1189{
1190 struct amr_softc *sc = ac->ac_sc;
1111 int worked, done, s, i;
1191 int done, s, i;
1112
1113 debug("called");
1114
1115 /*
1116 * Save the slot number so that we can locate this command when complete.
1117 * Note that ident = 0 seems to be special, so we don't use it.
1118 */
1119 ac->ac_mailbox.mb_ident = ac->ac_slot + 1;
1120
1121 /* set the busy flag when we copy the mailbox in */
1122 ac->ac_mailbox.mb_busy = 1;
1123
1124 /* set impossible status so that a woken sleeper can tell the command is busy */
1125 ac->ac_status = AMR_STATUS_BUSY;
1126
1192
1193 debug("called");
1194
1195 /*
1196 * Save the slot number so that we can locate this command when complete.
1197 * Note that ident = 0 seems to be special, so we don't use it.
1198 */
1199 ac->ac_mailbox.mb_ident = ac->ac_slot + 1;
1200
1201 /* set the busy flag when we copy the mailbox in */
1202 ac->ac_mailbox.mb_busy = 1;
1203
1204 /* set impossible status so that a woken sleeper can tell the command is busy */
1205 ac->ac_status = AMR_STATUS_BUSY;
1206
1127 /* spin waiting for the mailbox */
1207 /*
1208 * Spin waiting for the mailbox, give up after ~1 second.
1209 */
1128 debug("wait for mailbox");
1210 debug("wait for mailbox");
1129 for (i = 10000, done = 0, worked = 0; (i > 0) && !done; i--) {
1211 for (i = 10000, done = 0; (i > 0) && !done; i--) {
1130 s = splbio();
1131
1132 /* is the mailbox free? */
1133 if (sc->amr_mailbox->mb_busy == 0) {
1134 debug("got mailbox");
1135 sc->amr_mailbox64->mb64_segment = 0;
1136 bcopy(&ac->ac_mailbox, sc->amr_mailbox, AMR_MBOX_CMDSIZE);
1137 sc->amr_submit_command(sc);
1138 done = 1;
1139 sc->amr_workcount++;
1140 TAILQ_INSERT_TAIL(&sc->amr_work, ac, ac_link);
1141
1142 /* not free, try to clean up while we wait */
1143 } else {
1144 debug("busy flag %x\n", sc->amr_mailbox->mb_busy);
1212 s = splbio();
1213
1214 /* is the mailbox free? */
1215 if (sc->amr_mailbox->mb_busy == 0) {
1216 debug("got mailbox");
1217 sc->amr_mailbox64->mb64_segment = 0;
1218 bcopy(&ac->ac_mailbox, sc->amr_mailbox, AMR_MBOX_CMDSIZE);
1219 sc->amr_submit_command(sc);
1220 done = 1;
1221 sc->amr_workcount++;
1222 TAILQ_INSERT_TAIL(&sc->amr_work, ac, ac_link);
1223
1224 /* not free, try to clean up while we wait */
1225 } else {
1226 debug("busy flag %x\n", sc->amr_mailbox->mb_busy);
1145 /* try to kill some time being useful */
1146 if (amr_done(sc)) {
1147 worked = 1;
1148 } else {
1149 DELAY(100);
1150 }
1227 /* this is somewhat ugly */
1228 DELAY(100);
1151 }
1229 }
1152 splx(s);
1230 splx(s); /* drop spl to allow completion interrupts */
1153 }
1154
1231 }
1232
1155 /* do completion processing if we picked anything up */
1156 if (worked)
1157 amr_complete(sc);
1158
1159 /* command is enqueued? */
1160 if (done) {
1161 ac->ac_stamp = time_second;
1162 debug("posted command");
1163 return(0);
1164 }
1165
1166 /*
1167 * The controller wouldn't take the command. Revoke the slot
1168 * that the command was given and return with a bad status.
1169 */
1170 sc->amr_busycmd[ac->ac_slot] = NULL;
1171 device_printf(sc->amr_dev, "controller wedged (not taking commands)\n");
1172 ac->ac_status = AMR_STATUS_WEDGED;
1233 /* command is enqueued? */
1234 if (done) {
1235 ac->ac_stamp = time_second;
1236 debug("posted command");
1237 return(0);
1238 }
1239
1240 /*
1241 * The controller wouldn't take the command. Revoke the slot
1242 * that the command was given and return with a bad status.
1243 */
1244 sc->amr_busycmd[ac->ac_slot] = NULL;
1245 device_printf(sc->amr_dev, "controller wedged (not taking commands)\n");
1246 ac->ac_status = AMR_STATUS_WEDGED;
1247 amr_complete(sc);
1173 return(EIO);
1174}
1175
1176/********************************************************************************
1177 * Extract one or more completed commands from the controller (sc)
1178 *
1179 * Returns nonzero if any commands on the work queue were marked as completed.
1180 */
1181static int
1182amr_done(struct amr_softc *sc)
1183{
1184 struct amr_command *ac;
1185 struct amr_mailbox mbox;
1248 return(EIO);
1249}
1250
1251/********************************************************************************
1252 * Extract one or more completed commands from the controller (sc)
1253 *
1254 * Returns nonzero if any commands on the work queue were marked as completed.
1255 */
1256static int
1257amr_done(struct amr_softc *sc)
1258{
1259 struct amr_command *ac;
1260 struct amr_mailbox mbox;
1186 int i, idx, result;
1261 int i, idx, s, result;
1187
1188 debug("called");
1189
1190 /* See if there's anything for us to do */
1191 result = 0;
1262
1263 debug("called");
1264
1265 /* See if there's anything for us to do */
1266 result = 0;
1192 if (sc->amr_get_work(sc, &mbox)) {
1193 /* iterate over completed commands */
1194 for (i = 0; i < mbox.mb_nstatus; i++) {
1195 /* get pointer to busy command */
1196 idx = mbox.mb_completed[i] - 1;
1197 ac = sc->amr_busycmd[idx];
1198
1267
1199 /* really a busy command? */
1200 if (ac != NULL) {
1268 /* loop collecting completed commands */
1269 s = splbio();
1270 for (;;) {
1271 /* poll for a completed command's identifier and status */
1272 if (sc->amr_get_work(sc, &mbox)) {
1273 result = 1;
1274
1275 /* iterate over completed commands in this result */
1276 for (i = 0; i < mbox.mb_nstatus; i++) {
1277 /* get pointer to busy command */
1278 idx = mbox.mb_completed[i] - 1;
1279 ac = sc->amr_busycmd[idx];
1201
1280
1202 /* pull the command from the busy index */
1203 sc->amr_busycmd[idx] = NULL;
1204 sc->amr_busycmdcount--;
1281 /* really a busy command? */
1282 if (ac != NULL) {
1283
1284 /* pull the command from the busy index */
1285 sc->amr_busycmd[idx] = NULL;
1286 sc->amr_busycmdcount--;
1205
1287
1206 /* unmap data buffer */
1207 amr_unmapcmd(ac);
1288 /* aborted command? */
1289 if (ac == (struct amr_command *)sc) {
1290 device_printf(sc->amr_dev, "aborted command completed (%d)\n", idx);
1291 sc->amr_busycmd[idx] = NULL; /* free the slot again */
1292 ac = NULL;
1208
1293
1209 /* aborted command? */
1210 if (ac == (struct amr_command *)sc) {
1211 device_printf(sc->amr_dev, "aborted command completed (%d)\n", idx);
1212 ac = NULL;
1294 /* wedged command? */
1295 } else if (ac->ac_status == AMR_STATUS_WEDGED) {
1296 device_printf(sc->amr_dev, "wedged command completed (%d)\n", idx);
1297 ac->ac_status = AMR_STATUS_LATE;
1213
1298
1214 /* completed normally, save status */
1215 } else {
1216 ac->ac_status = mbox.mb_status;
1217 debug("completed command with status %x", mbox.mb_status);
1299 /* completed normally, save status */
1300 } else {
1301 ac->ac_status = mbox.mb_status;
1302 debug("completed command with status %x", mbox.mb_status);
1303 }
1218 }
1304 }
1219 result = 1;
1220 }
1305 }
1306 } else {
1307 break;
1221 }
1222 }
1308 }
1309 }
1310
1311 /* if we've completed any commands, try posting some more */
1312 if (result)
1313 amr_startio(sc);
1314
1315 /* handle completion and timeouts */
1316 amr_complete(sc);
1317
1223 return(result);
1224}
1225
1226/********************************************************************************
1227 * Do completion processing on done commands on (sc)
1228 */
1229static void
1230amr_complete(struct amr_softc *sc)
1231{
1232 struct amr_command *ac, *nc;
1233 int s, count;
1234
1235 debug("called");
1236
1318 return(result);
1319}
1320
1321/********************************************************************************
1322 * Do completion processing on done commands on (sc)
1323 */
1324static void
1325amr_complete(struct amr_softc *sc)
1326{
1327 struct amr_command *ac, *nc;
1328 int s, count;
1329
1330 debug("called");
1331
1237 count = 0;
1332 if (amr_lock_tas(sc, AMR_LOCK_COMPLETING))
1333 return;
1238
1239 s = splbio();
1334
1335 s = splbio();
1336 count = 0;
1337
1338 /* scan the list of busy/done commands */
1240 ac = TAILQ_FIRST(&sc->amr_work);
1241 while (ac != NULL) {
1242 nc = TAILQ_NEXT(ac, ac_link);
1243
1339 ac = TAILQ_FIRST(&sc->amr_work);
1340 while (ac != NULL) {
1341 nc = TAILQ_NEXT(ac, ac_link);
1342
1244 /* Skip if command is still active */
1343 /* Command has been completed in some fashion */
1245 if (ac->ac_status != AMR_STATUS_BUSY) {
1344 if (ac->ac_status != AMR_STATUS_BUSY) {
1345
1346 /* unmap the command's data buffer */
1347 amr_unmapcmd(ac);
1246
1247 /*
1248 * Is there a completion handler?
1249 */
1250 if (ac->ac_complete != NULL) {
1251
1252 /* remove and give to completion handler */
1253 TAILQ_REMOVE(&sc->amr_work, ac, ac_link);

--- 14 unchanged lines hidden (view full) ---

1268 * Leave it for a polling caller.
1269 */
1270 } else {
1271 }
1272 }
1273 ac = nc;
1274 }
1275 splx(s);
1348
1349 /*
1350 * Is there a completion handler?
1351 */
1352 if (ac->ac_complete != NULL) {
1353
1354 /* remove and give to completion handler */
1355 TAILQ_REMOVE(&sc->amr_work, ac, ac_link);

--- 14 unchanged lines hidden (view full) ---

1370 * Leave it for a polling caller.
1371 */
1372 } else {
1373 }
1374 }
1375 ac = nc;
1376 }
1377 splx(s);
1276
1277 /* queue more work if we can */
1278 amr_startio(sc);
1378
1379 amr_lock_clr(sc, AMR_LOCK_COMPLETING);
1279}
1280
1281/********************************************************************************
1282 ********************************************************************************
1283 Command Buffer Management
1284 ********************************************************************************
1285 ********************************************************************************/
1286

--- 85 unchanged lines hidden (view full) ---

1372 */
1373static void
1374amr_quartz_submit_command(struct amr_softc *sc)
1375{
1376 debug("called");
1377
1378 sc->amr_mailbox->mb_poll = 0;
1379 sc->amr_mailbox->mb_ack = 0;
1380}
1381
1382/********************************************************************************
1383 ********************************************************************************
1384 Command Buffer Management
1385 ********************************************************************************
1386 ********************************************************************************/
1387

--- 85 unchanged lines hidden (view full) ---

1473 */
1474static void
1475amr_quartz_submit_command(struct amr_softc *sc)
1476{
1477 debug("called");
1478
1479 sc->amr_mailbox->mb_poll = 0;
1480 sc->amr_mailbox->mb_ack = 0;
1380 /* XXX write barrier? */
1381 while(AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT)
1382 ; /* XXX aiee! what if it dies? */
1383 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT);
1384}
1385
1386static void
1387amr_std_submit_command(struct amr_softc *sc)
1388{

--- 10 unchanged lines hidden (view full) ---

1399 * save details of the completion in (mbsave)
1400 */
1401static int
1402amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave)
1403{
1404 int s, worked;
1405 u_int32_t outd;
1406
1481 while(AMR_QGET_IDB(sc) & AMR_QIDB_SUBMIT)
1482 ; /* XXX aiee! what if it dies? */
1483 AMR_QPUT_IDB(sc, sc->amr_mailboxphys | AMR_QIDB_SUBMIT);
1484}
1485
1486static void
1487amr_std_submit_command(struct amr_softc *sc)
1488{

--- 10 unchanged lines hidden (view full) ---

1499 * save details of the completion in (mbsave)
1500 */
1501static int
1502amr_quartz_get_work(struct amr_softc *sc, struct amr_mailbox *mbsave)
1503{
1504 int s, worked;
1505 u_int32_t outd;
1506
1407 debug("called");
1507/* debug("called"); */
1408
1409 worked = 0;
1410 s = splbio();
1411
1412 /* work waiting for us? */
1413 if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) {
1414 AMR_QPUT_ODB(sc, AMR_QODB_READY);
1415

--- 81 unchanged lines hidden (view full) ---

1497 struct amr_sgentry *sg;
1498 int i;
1499
1500 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n",
1501 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive);
1502 device_printf(sc->amr_dev, "blkcount %d lba %d\n",
1503 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba);
1504 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length);
1508
1509 worked = 0;
1510 s = splbio();
1511
1512 /* work waiting for us? */
1513 if ((outd = AMR_QGET_ODB(sc)) == AMR_QODB_READY) {
1514 AMR_QPUT_ODB(sc, AMR_QODB_READY);
1515

--- 81 unchanged lines hidden (view full) ---

1597 struct amr_sgentry *sg;
1598 int i;
1599
1600 device_printf(sc->amr_dev, "cmd %x ident %d drive %d\n",
1601 ac->ac_mailbox.mb_command, ac->ac_mailbox.mb_ident, ac->ac_mailbox.mb_drive);
1602 device_printf(sc->amr_dev, "blkcount %d lba %d\n",
1603 ac->ac_mailbox.mb_blkcount, ac->ac_mailbox.mb_lba);
1604 device_printf(sc->amr_dev, "virtaddr %p length %lu\n", ac->ac_data, (unsigned long)ac->ac_length);
1505 device_printf(sc->amr_dev, "physaddr %08x nsg %d\n",
1605 device_printf(sc->amr_dev, "sg physaddr %08x nsg %d\n",
1506 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem);
1507
1508 /* get base address of s/g table */
1509 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG);
1510 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++)
1511 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count);
1512}
1606 ac->ac_mailbox.mb_physaddr, ac->ac_mailbox.mb_nsgelem);
1607
1608 /* get base address of s/g table */
1609 sg = sc->amr_sgtable + (ac->ac_slot * AMR_NSEG);
1610 for (i = 0; i < ac->ac_mailbox.mb_nsgelem; i++, sg++)
1611 device_printf(sc->amr_dev, " %x/%d\n", sg->sg_addr, sg->sg_count);
1612}
1613
1614/********************************************************************************
1615 * Print information on all the controllers in the system, useful mostly
1616 * for calling from DDB.
1617 */
1618void
1619amr_report(void)
1620{
1621 struct amr_softc *sc;
1622 int i, s;
1623
1624 s = splbio();
1625 for (i = 0; (sc = devclass_get_softc(amr_devclass, i)) != NULL; i++) {
1626 device_printf(sc->amr_dev, "amr_waitbufs %d amr_busycmdcount %d amr_workcount %d\n",
1627 sc->amr_waitbufs, sc->amr_busycmdcount, sc->amr_workcount);
1628 }
1629}