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Add scsi target support.
This commit is contained in:
Peter Dufault
parent
8db34c841e
commit
bc0cfeb0ce
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=7819
@ -12,7 +12,7 @@
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* $Id: aha1542.c,v 1.42 1995/03/28 07:55:22 bde Exp $
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* $Id: aha1542.c,v 1.43 1995/04/12 20:47:32 wollman Exp $
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*/
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/*
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@ -33,6 +33,7 @@
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#include <sys/user.h>
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#include <machine/clock.h>
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#include <i386/isa/isa_device.h>
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#include <machine/clock.h>
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#endif /* KERNEL */
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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@ -151,6 +152,8 @@ struct aha_mbx {
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#define AHA_MBI_UNKNOWN 0x3 /* Tried to abort invalid CCB */
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#define AHA_MBI_ERROR 0x4 /* Completed with error */
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#define AHA_MBI_TGT_NO_CCB 0x10 /* Target received, no CCB ready */
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/* FOR OLD VERSIONS OF THE !%$@ this may have to be 16 (yuk) */
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#define AHA_NSEG 17 /* Number of scatter gather segments <= 16 */
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/* allow 64 K i/o (min) */
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@ -283,9 +286,7 @@ struct aha_extbios
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#define AHA_DMA_PAGES AHA_NSEG
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#define PAGESIZ 4096
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#define INVALIDATE_CACHE {asm volatile( ".byte 0x0F ;.byte 0x08" ); }
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u_char aha_scratch_buf[256];
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#ifdef AHADEBUG
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int aha_debug = 1;
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#endif /*AHADEBUG */
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@ -305,6 +306,7 @@ struct aha_data {
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int aha_int; /* irq level */
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int aha_dma; /* DMA req channel */
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int aha_scsi_dev; /* scsi bus address */
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int flags;
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/* We use different op codes for different revs of the board
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* if we think residual codes will work.
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@ -629,7 +631,7 @@ ahaattach(dev)
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aha->sc_link.adapter_targ = aha->aha_scsi_dev;
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aha->sc_link.adapter = &aha_switch;
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aha->sc_link.device = &aha_dev;
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aha->sc_link.flags = SDEV_BOUNCE;
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aha->sc_link.flags = aha->flags;;
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/*
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* ask the adapter what subunits are present
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@ -658,7 +660,6 @@ int
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ahaintr(unit)
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int unit;
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{
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struct aha_ccb *ccb;
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unsigned char stat;
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register i;
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struct aha_data *aha = ahadata[unit];
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@ -667,7 +668,7 @@ ahaintr(unit)
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printf("ahaintr ");
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#endif /*AHADEBUG */
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/*
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* First acknowlege the interrupt, Then if it's not telling about
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* First acknowledge the interrupt, Then if it's not telling about
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* a completed operation just return.
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*/
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stat = inb(AHA_INTR_PORT);
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@ -678,15 +679,21 @@ ahaintr(unit)
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printf("mbxin ");
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#endif /*AHADEBUG */
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/*
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* If it IS then process the competed operation
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* If it IS then process the completed operation
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*/
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for (i = 0; i < AHA_MBX_SIZE; i++) {
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if (aha->aha_mbx.mbi[i].stat != AHA_MBI_FREE) {
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ccb = (struct aha_ccb *) PHYSTOKV(
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(scsi_3btou(aha->aha_mbx.mbi[i].ccb_addr)));
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struct aha_mbx_in *mbi = aha->aha_mbx.mbi + i;
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if (mbi->stat != AHA_MBI_FREE) {
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struct aha_ccb *ccb =
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(struct aha_ccb *)PHYSTOKV(scsi_3btou(mbi->ccb_addr));
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stat = mbi->stat;
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if ((stat = aha->aha_mbx.mbi[i].stat) != AHA_MBI_OK) {
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switch (stat) {
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case AHA_MBI_OK:
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break;
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case AHA_MBI_ABORT:
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#ifdef AHADEBUG
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if (aha_debug)
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@ -695,8 +702,33 @@ ahaintr(unit)
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ccb->host_stat = AHA_ABORTED;
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break;
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case AHA_MBI_TGT_NO_CCB:
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/* We enabled target mode and received a SEND
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* or RECEIVE command from the initiator, but
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* we don't have any CCB registered to handle the command.
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* At this point it would be nice to wakeup a
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* process sleeping on this event via an ioctl,
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* returning whether it is a SEND or RECEIVE and the
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* required length.
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* However, I want to look at the CAM documentation before
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* I start extending the API at all.
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*/
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#ifdef NOISE_WHEN_TGT_NO_CDB
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printf("Target received, but no CCB ready.\n");
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printf("Initiator & lun: %02x\n", mbi->ccb_addr[0]);
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printf("Max data length: %06x\n",
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(mbi->ccb_addr[1] << 16) | (mbi->ccb_addr[2] << 8)
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+ 255);
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#endif
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#ifdef AHADEBUG
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if (aha_debug)
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printf("target-no-ccb");
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#endif /*AHADEBUG */
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ccb = 0;
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break;
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case AHA_MBI_UNKNOWN:
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ccb = (struct aha_ccb *) 0;
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ccb = 0;
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#ifdef AHADEBUG
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if (aha_debug)
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printf("unknown ccb for abort ");
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@ -705,6 +737,7 @@ ahaintr(unit)
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/* no such ccb known for abort */
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case AHA_MBI_ERROR:
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/* XXX ccb is still set up? Driver fails without it? */
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break;
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default:
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@ -712,30 +745,29 @@ ahaintr(unit)
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}
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#ifdef AHADEBUG
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if (aha_debug && ccb) {
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if (aha_debug && ccb && stat != AHA_MBI_OK) {
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u_char *cp;
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cp = (u_char *) (&(ccb->scsi_cmd));
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printf("op=%x %x %x %x %x %x\n",
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cp[0], cp[1], cp[2],
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cp[3], cp[4], cp[5]);
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printf("stat %x for mbi[%d]\n"
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,aha->aha_mbx.mbi[i].stat, i);
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,mbi->stat, i);
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printf("addr = 0x%x\n", ccb);
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}
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#endif /*AHADEBUG */
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}
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if (ccb) {
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untimeout(aha_timeout, (caddr_t)ccb);
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aha_done(unit, ccb);
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}
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aha->aha_mbx.mbi[i].stat = AHA_MBI_FREE;
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mbi->stat = AHA_MBI_FREE;
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}
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}
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return 1;
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}
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/*
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* A ccb (and hence a mbx-out is put onto the
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* A ccb (and hence a mbx-out) is put onto the
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* free list.
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*/
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void
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@ -794,6 +826,38 @@ aha_get_ccb(unit, flags)
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return (rc);
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}
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static void
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put_host_stat(int host_stat)
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{
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int i;
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struct { int host_stat; char *text; } tab[] = {
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{ AHA_OK, "Cmd ok" },
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{ AHA_LINK_OK, "Link cmd ok" },
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{ AHA_LINK_IT, "Link cmd ok + int" },
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{ AHA_SEL_TIMEOUT, "Selection time out" },
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{ AHA_OVER_UNDER, "Data over/under run" },
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{ AHA_BUS_FREE, "Bus dropped at unexpected time" },
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{ AHA_INV_BUS, "Invalid bus phase/sequence" },
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{ AHA_BAD_MBO, "Incorrect MBO cmd" },
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{ AHA_BAD_CCB, "Incorrect ccb opcode" },
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{ AHA_BAD_LINK, "Not same values of LUN for links" },
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{ AHA_INV_TARGET, "Invalid target direction" },
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{ AHA_CCB_DUP, "Duplicate CCB received" },
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{ AHA_INV_CCB, "Invalid CCB or segment list" },
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{ AHA_ABORTED, "Software abort" },
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};
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for (i = 0; i < sizeof(tab) / sizeof(tab[0]); i++) {
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if (tab[i].host_stat == host_stat) {
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printf("%s\n", tab[i].text);
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return;
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}
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}
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printf("Unknown host_stat %02x\n", host_stat);
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}
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/*
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* We have a ccb which has been processed by the
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* adaptor, now we look to see how the operation
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@ -842,6 +906,7 @@ aha_done(unit, ccb)
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{
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case AHA_TARGET_CCB:
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xs->resid = xs->datalen - scsi_3btoi(ccb->data_length);
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xs->flags |= SCSI_RESID_VALID;
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if (xs->resid <= 0)
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xs->error = XS_LENGTH;
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break;
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@ -849,11 +914,9 @@ aha_done(unit, ccb)
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case AHA_INIT_RESID_CCB:
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case AHA_INIT_SG_RESID_CCB:
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xs->resid = scsi_3btoi(ccb->data_length);
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xs->flags |= SCSI_RESID_VALID;
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if (xs->resid <= 0)
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xs->error = XS_LENGTH;
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printf("aha over under: resid %d error %d.\n",
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xs->resid, xs->error);
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break;
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default:
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@ -863,8 +926,8 @@ aha_done(unit, ccb)
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default: /* Other scsi protocol messes */
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xs->error = XS_DRIVER_STUFFUP;
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printf("aha%d:host_stat%x\n",
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unit, ccb->host_stat);
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printf("aha%d: ", unit);
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put_host_stat(ccb->host_stat);
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}
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} else {
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SC_DEBUG(xs->sc_link, SDEV_DB3, ("target err 0x%x\n",
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@ -891,6 +954,21 @@ aha_done(unit, ccb)
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scsi_done(xs);
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}
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static char *board_rev(int type)
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{
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switch(type)
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{
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case 0x20: return "Buslogic 545?";
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case 0x31: return "AHA-1540";
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case 0x41: return "AHA-154x[AB]";
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case 0x42: return "AHA-1640";
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case 0x43: return "AHA-1542C";
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case 0x44: return "AHA-1542CF";
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case 0x45: return "AHA-1542CF BIOS v2.01";
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default: return "Unknown board";
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}
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}
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/*
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* Start the board, ready for normal operation
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*/
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@ -978,6 +1056,8 @@ aha_init(unit)
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inquire.revision_1, inquire.revision_2);
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#endif /* AHADEBUG */
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aha->flags = SDEV_BOUNCE;
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/*
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* If we are a 1542C or 1542CF disable the extended bios so that the
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* mailbox interface is unlocked.
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@ -986,36 +1066,58 @@ aha_init(unit)
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* No need to check the extended bios flags as some of the
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* extensions that cause us problems are not flagged in that byte.
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*/
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printf("aha%d: %s-V%c.%c",
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unit, board_rev(inquire.boardid), inquire.revision_1,
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inquire.revision_2);
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if ((inquire.boardid == 0x43) || (inquire.boardid == 0x44) ||
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(inquire.boardid == 0x45) || (inquire.boardid == 0x41
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&& inquire.revision_1 == 0x31 && inquire.revision_2 == 0x34)) {
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static char *revs[] =
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{"154xB-3.2", "1640", "154xC", "154xCF", "154xCF-2.01"};
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aha_cmd(unit, 0, sizeof(extbios), 0, &extbios, AHA_EXT_BIOS);
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#ifdef AHADEBUG
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printf("aha%d: extended bios flags %x\n", unit, extbios.flags);
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#endif /* AHADEBUG */
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/* Say exactly what we think this is in case we ever get rev
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* dependent problems:
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*/
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printf("aha%d is a %s-V%c.%c: enabling mailbox and residuals\n",
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unit, revs[inquire.boardid - 0x41], inquire.revision_1,
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inquire.revision_2);
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printf(", enabling mailbox");
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aha_cmd(unit, 2, 0, 0, 0, AHA_MBX_ENABLE,
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0, extbios.mailboxlock);
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}
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/* Which boards support residuals? Some early 1542A's apparently
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* don't. The 1542B with V0.5 of the software does, so I've
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* arbitrarily set that as the earliest rev.
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*/
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if ((inquire.boardid == 0x43) || (inquire.boardid == 0x44) ||
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(inquire.boardid == 0x45) || (inquire.boardid == 0x41
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&& (inquire.revision_1 > '0' || inquire.revision_2 >= '5'))) {
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printf(", enabling residuals");
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aha->init_opcode = AHA_INIT_RESID_CCB;
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aha->sg_opcode = AHA_INIT_SG_RESID_CCB;
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}
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/* Which boards support target operations? The 1542C completely
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* locks up the SCSI bus if you enable them. I'm only sure
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* about the B.
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*/
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if (inquire.boardid == 0x41) {
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printf(", target ops");
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aha->flags |= SDEV_TARGET_OPS;
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}
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printf("\n");
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/*
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* setup dma channel from jumpers and save int
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* level
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*/
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printf("aha%d: reading board settings, ", unit);
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#define PRNT(x) printf(x)
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if (inquire.boardid == 0x20) {
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DELAY(1000); /* for Bustek 545 */
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}
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aha_cmd(unit, 0, sizeof(conf), 0, &conf, AHA_CONF_GET);
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switch (conf.chan) {
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case CHAN0:
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@ -1136,6 +1238,91 @@ ahaminphys(bp)
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}
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}
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int aha_escape(xs, ccb)
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struct scsi_xfer *xs;
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struct aha_ccb *ccb;
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{
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int ret = 0;
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int s;
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if (xs->cmd)
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{
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switch(xs->cmd->opcode)
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{
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case SCSI_OP_RESET:
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ccb->opcode = AHA_RESET_CCB;
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ret = 0;
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break;
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case SCSI_OP_TARGET:
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s= splbio();
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aha_cmd(xs->sc_link->adapter_unit, 2, 0, 0, 0, AHA_TARGET_EN,
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(int)xs->cmd->bytes[0], (int)1);
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splx(s);
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ret = COMPLETE;
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break;
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default:
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ret = ESCAPE_NOT_SUPPORTED;
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break;
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}
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}
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else
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{
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ccb->opcode = AHA_RESET_CCB;
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ret = 0;
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}
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return ret;
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}
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#define physdb(ARG) (void)(ARG)
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/* physcontig: Scan forward from a KV and return length to the
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* end of physically contiguous addresses. This belongs in
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* i386/.../something_or_other.c
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* XXX: Find the right thing in the kernel.
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*/
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static int physcontig(int kv, int len)
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{
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int len_was = len;
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u_long kvl = (u_long)kv;
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int phys_len;
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u_long phys, prev_phys;
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prev_phys = KVTOPHYS(kvl);
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/* We go at least to the end of this page:
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*/
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phys_len = PAGESIZ - (prev_phys & (PAGESIZ - 1));
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len -= phys_len;
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kvl += phys_len;
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prev_phys &= ~(PAGESIZ - 1);
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while (len > 0)
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{
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phys = KVTOPHYS(kvl);
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if (phys != prev_phys + PAGESIZ)
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{
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physdb(("phys %08x != prev_phys %08x + PAGESIZ\n",
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phys, prev_phys));
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break;
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}
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prev_phys = phys;
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kvl += PAGESIZ;
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len -= PAGESIZ;
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}
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phys_len = (len < 0) ? len_was : (len_was - len);
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physdb(("physcontig(%08x, %d) = %d\n", kv, len_was, phys_len));
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return phys_len;
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}
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/*
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* start a scsi operation given the command and
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* the data address. Also needs the unit, target
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@ -1193,13 +1380,84 @@ aha_scsi_cmd(xs)
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* fall on the ground if you ask for anything but
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* an exact number of sense bytes (wiping out the
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* sense data)
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* XXX: This was lost at some point in scsi_ioctl.c.
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*/
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ccb->req_sense_length = (xs->req_sense_length)
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? xs->req_sense_length
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: sizeof(ccb->scsi_sense);
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if ((xs->datalen) && (!(flags & SCSI_RESET))) {
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/* can use S/G only if not zero length */
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/* XXX: I propose we move the reset handling into the escape
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* handling.
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*/
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if (flags & SCSI_RESET) {
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flags |= SCSI_ESCAPE;
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xs->cmd->opcode = SCSI_OP_RESET;
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}
|
||||
|
||||
/* Set up the CCB. For an escape function, the escape hook may
|
||||
* set it up for us.
|
||||
*/
|
||||
|
||||
if (flags & SCSI_ESCAPE) {
|
||||
int ret;
|
||||
ret = aha_escape(xs, ccb);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
else if (flags & SCSI_TARGET)
|
||||
{
|
||||
ccb->opcode = AHA_TARGET_CCB;
|
||||
|
||||
/* These must be set up for target mode:
|
||||
*/
|
||||
if (flags & SCSI_DATA_IN)
|
||||
ccb->data_in = 1;
|
||||
if (flags & SCSI_DATA_OUT)
|
||||
ccb->data_out = 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
ccb->opcode = (xs->datalen? /* can't use S/G if zero length */
|
||||
AHA_INIT_SCAT_GATH_CCB
|
||||
:AHA_INITIATOR_CCB);
|
||||
}
|
||||
|
||||
switch(ccb->opcode)
|
||||
{
|
||||
case AHA_TARGET_CCB:
|
||||
if (xs->data)
|
||||
scsi_uto3b(KVTOPHYS((int)xs->data), ccb->data_addr);
|
||||
else
|
||||
scsi_uto3b(0, ccb->data_addr);
|
||||
|
||||
/* For non scatter-gather I/O (and Target mode doesn't do
|
||||
* scatter-gather) we need to truncate the transfer
|
||||
* at the first non consecutive physical address.
|
||||
*/
|
||||
scsi_uto3b(physcontig((int)xs->data, xs->datalen), ccb->data_length);
|
||||
break;
|
||||
|
||||
/* This should be folded in with TARGET_CCB once
|
||||
* physcontig is debugged.
|
||||
*/
|
||||
case AHA_INITIATOR_CCB:
|
||||
case AHA_INIT_RESID_CCB:
|
||||
|
||||
if (xs->data)
|
||||
scsi_uto3b(KVTOPHYS((int)xs->data), ccb->data_addr);
|
||||
else
|
||||
scsi_uto3b(0, ccb->data_addr);
|
||||
|
||||
scsi_uto3b(xs->datalen, ccb->data_length);
|
||||
break;
|
||||
|
||||
case AHA_RESET_CCB:
|
||||
scsi_uto3b(0, ccb->data_addr);
|
||||
scsi_uto3b(0, ccb->data_length);
|
||||
break;
|
||||
|
||||
case AHA_INIT_SCAT_GATH_CCB:
|
||||
case AHA_INIT_SG_RESID_CCB:
|
||||
scsi_uto3b(KVTOPHYS(ccb->scat_gath), ccb->data_addr );
|
||||
sg = ccb->scat_gath ;
|
||||
seg = 0;
|
||||
@ -1226,7 +1484,7 @@ aha_scsi_cmd(xs)
|
||||
*/
|
||||
|
||||
SC_DEBUG(xs->sc_link, SDEV_DB4,
|
||||
("%d @0x%x:- ", xs->datalen, xs->data));
|
||||
("%ld @%p:- ", xs->datalen, xs->data));
|
||||
datalen = xs->datalen;
|
||||
thiskv = (int) xs->data;
|
||||
thisphys = KVTOPHYS(thiskv);
|
||||
@ -1293,15 +1551,20 @@ aha_scsi_cmd(xs)
|
||||
aha_free_ccb(unit, ccb, flags);
|
||||
return (HAD_ERROR);
|
||||
}
|
||||
} else { /* No data xfer, use non S/G values */
|
||||
scsi_uto3b(0, ccb->data_addr);
|
||||
scsi_uto3b(0, ccb->data_length);
|
||||
break;
|
||||
|
||||
default:
|
||||
printf("aha_scsi_cmd%d: Illegal CCB opcode.\n", unit);
|
||||
xs->error = XS_DRIVER_STUFFUP;
|
||||
aha_free_ccb(unit,ccb,flags);
|
||||
return HAD_ERROR;
|
||||
}
|
||||
|
||||
scsi_uto3b(0, ccb->link_addr);
|
||||
/*
|
||||
* Put the scsi command in the ccb and start it
|
||||
*/
|
||||
if (!(flags & SCSI_RESET))
|
||||
if (!(flags & SCSI_ESCAPE))
|
||||
bcopy(xs->cmd, &ccb->scsi_cmd, ccb->scsi_cmd_length);
|
||||
if (!(flags & SCSI_NOMASK)) {
|
||||
s = splbio(); /* stop instant timeouts */
|
||||
@ -1469,6 +1732,8 @@ aha_set_bus_speed(unit)
|
||||
*/
|
||||
static char aha_test_string[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890abcdefghijklmnopqrstuvwxyz!@";
|
||||
|
||||
u_char aha_scratch_buf[256];
|
||||
|
||||
int
|
||||
aha_bus_speed_check(unit, speed)
|
||||
int unit, speed;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user