Some changes inspired by Bruce Evans's driver:
Consolidate error reporting in one function. Actually use the dk_status and dk_error fields, and pass around only the error bit to avoid lots of unneeded assignments and tests. No functional differences.
This commit is contained in:
mycroft
parent
1675d43043
commit
5a17003403
@ -35,7 +35,7 @@
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* SUCH DAMAGE.
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*
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* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
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* $Id: wd.c,v 1.62 1994/03/07 03:18:35 mycroft Exp $
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* $Id: wd.c,v 1.63 1994/03/07 05:54:44 mycroft Exp $
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*/
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#define INSTRUMENT /* instrumentation stuff by Brad Parker */
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@ -156,11 +156,12 @@ static int wdgetctlr __P((struct disk *));
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static void bad144intern __P((struct disk *));
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static int wdreset __P((struct disk *, int));
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static void wdtimeout __P((caddr_t));
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void wddisksort __P((struct buf *dp, struct buf *bp));
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int wdc_wait __P((struct disk *, int));
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#define wait_for_drq(d) wdc_wait(d, WDCS_DRQ)
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#define wait_for_ready(d) wdc_wait(d, WDCS_READY | WDCS_SEEKCMPLT)
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#define wait_for_unbusy(d) wdc_wait(d, 0)
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void wddisksort __P((struct buf *, struct buf *));
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static void wderror __P((struct disk *, struct buf *, char *));
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int wdwait __P((struct disk *, int));
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#define wait_for_drq(d) wdwait(d, WDCS_DRQ)
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#define wait_for_ready(d) wdwait(d, WDCS_READY | WDCS_SEEKCMPLT)
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#define wait_for_unbusy(d) wdwait(d, 0)
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/*
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* Probe for controller.
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@ -194,7 +195,7 @@ wdprobe(isa_dev)
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wdreset(du, 0);
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/* execute a controller only command */
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if (wdcommand(du, 0, 0, 0, 0, WDCC_DIAGNOSE) < 0)
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if (wdcommand(du, 0, 0, 0, 0, WDCC_DIAGNOSE) != 0)
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goto nodevice;
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free(du, M_TEMP);
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@ -405,7 +406,6 @@ wdstart(ctrlr)
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long secpertrk, secpercyl;
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int xfrblknum;
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int lunit;
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u_short wdc;
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loop:
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/* is there a drive for the controller to do a transfer with? */
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@ -520,7 +520,6 @@ loop:
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sector++; /* sectors begin with 1, not 0 */
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wdtab[ctrlr].b_active = 1; /* mark controller active */
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wdc = du->dk_port;
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#ifdef INSTRUMENT
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/* instrumentation */
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@ -566,13 +565,14 @@ retry:
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#endif
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/* initiate command! */
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if (wdcommand(du, cylin, head, sector, count, command) < 0) {
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while (wdcommand(du, cylin, head, sector, count, command) < 0) {
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wderror(du, NULL,
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"wdstart: timeout waiting for unbusy");
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wdreset(du, 1);
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goto retry;
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}
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#ifdef WDDEBUG
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printf("sector %d cylin %d head %d addr %x sts %x\n", sector,
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cylin, head, bp->b_un.b_addr, inb(wdc+wd_altsts));
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cylin, head, bp->b_un.b_addr, inb(du->dk_port+wd_altsts));
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#endif
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}
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@ -583,12 +583,13 @@ retry:
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return;
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if (wait_for_drq(du) < 0) {
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/* XXX seems wrong */
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wdreset(du, 1);
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goto retry;
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}
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/* then send it! */
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outsw(wdc+wd_data, bp->b_un.b_addr + du->dk_skip * DEV_BSIZE,
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outsw(du->dk_port+wd_data, bp->b_un.b_addr + du->dk_skip * DEV_BSIZE,
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DEV_BSIZE / sizeof(short));
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du->dk_bc -= DEV_BSIZE;
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@ -606,8 +607,6 @@ wdintr(ctrlr)
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{
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register struct disk *du;
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register struct buf *bp, *dp;
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int stat;
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u_short wdc;
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/* clear the pending interrupt */
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(void) inb(wdcontroller[ctrlr].dkc_port+wd_status);
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@ -620,17 +619,15 @@ wdintr(ctrlr)
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dp = wdtab[ctrlr].b_forw;
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bp = dp->b_actf;
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du = wddrives[WDUNIT(bp->b_dev)];
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wdc = du->dk_port;
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du->dk_timeout = 0;
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#ifdef WDDEBUG
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printf("I%d ", ctrlr);
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#endif
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stat = wait_for_unbusy(du);
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if (stat < 0) {
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printf("wdc%d: timeout waiting for unbusy\n", ctrlr);
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stat |= WDCS_ERR; /* XXX */
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if (wait_for_unbusy(du) < 0) {
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wderror(du, NULL, "wdintr: timeout waiting for unbusy");
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du->dk_status |= WDCS_ERR; /* XXX */
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}
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/* is it not a transfer, but a control operation? */
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@ -647,12 +644,10 @@ wdintr(ctrlr)
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}
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/* have we an error? */
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if (stat & (WDCS_ERR | WDCS_ECCCOR)) {
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if (du->dk_status & (WDCS_ERR | WDCS_ECCCOR)) {
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lose:
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du->dk_status = stat;
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du->dk_error = inb(wdc+wd_error);
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#ifdef WDDEBUG
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printf("stat %x error %x\n", stat, du->dk_error);
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wderror(du, NULL, "wdintr");
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#endif
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if ((du->dk_flags & DKFL_SINGLE) == 0) {
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du->dk_flags |= DKFL_ERROR;
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@ -667,23 +662,16 @@ wdintr(ctrlr)
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#endif
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/* error or error correction? */
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if (stat & WDCS_ERR) {
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if (du->dk_status & WDCS_ERR) {
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if (++wdtab[ctrlr].b_errcnt < WDIORETRIES)
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wdtab[ctrlr].b_active = 0;
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else {
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diskerr(bp, "wd", "hard error", LOG_PRINTF,
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du->dk_skip, &du->dk_dd);
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#ifdef WDDEBUG
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printf("wd%d: stat %b error %b\n", du->dk_lunit,
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stat, WDCS_BITS, inb(wdc+wd_error),
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WDERR_BITS);
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#endif
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wderror(du, bp, "hard error");
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bp->b_error = EIO;
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bp->b_flags |= B_ERROR; /* flag the error */
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}
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} else
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diskerr(bp, "wd", "soft error", 0, du->dk_skip,
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&du->dk_dd);
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wderror(du, bp, "soft ecc");
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}
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/*
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@ -696,20 +684,20 @@ wdintr(ctrlr)
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chk = min(DEV_BSIZE / sizeof(short), du->dk_bc / sizeof(short));
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/* ready to receive data? */
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if (wait_for_drq(du) < 0) {
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printf("wdc%d: timeout waiting for drq\n", ctrlr);
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if (wait_for_drq(du) != 0) {
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wderror(du, NULL, "wdintr: read error detected late");
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goto lose;
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}
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/* suck in data */
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insw(wdc+wd_data,
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insw(du->dk_port+wd_data,
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bp->b_un.b_addr + du->dk_skip * DEV_BSIZE, chk);
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du->dk_bc -= chk * sizeof(short);
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du->dk_bct -= chk * sizeof(short);
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/* for obselete fractional sector reads */
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while (chk++ < (DEV_BSIZE / sizeof(short)))
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(void) inw(wdc+wd_data);
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(void) inw(du->dk_port+wd_data);
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}
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wdxfer[du->dk_lunit]++;
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@ -723,8 +711,7 @@ outt:
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du->dk_skip++; /* Add to succ. sect */
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du->dk_skipm++; /* Add to succ. sect for multitransfer */
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if (wdtab[ctrlr].b_errcnt)
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diskerr(bp, "wd", "soft error", 0, du->dk_skip,
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&du->dk_dd);
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wderror(du, bp, "soft error");
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wdtab[ctrlr].b_errcnt = 0;
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/* see if more to transfer */
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@ -891,35 +878,29 @@ wdcontrol(bp)
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struct buf *bp;
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{
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struct disk *du;
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int stat;
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int s, ctrlr;
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u_short wdc;
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int ctrlr;
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du = wddrives[WDUNIT(bp->b_dev)];
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ctrlr = du->dk_ctrlr;
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wdc = du->dk_port;
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switch (du->dk_state) {
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case WANTOPEN: /* set SDH, step rate, do restore */
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tryagainrecal:
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s = splbio(); /* not called from intr level ... */
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wdgetctlr(du); /* XXX Is this necessary? */
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wdtab[ctrlr].b_active = 1;
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if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) < 0) {
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wdreset(du, 1);
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splx(s);
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goto tryagainrecal;
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if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0) {
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wderror(du, 0, "wdcontrol: wdcommand failed");
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goto lose;
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}
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du->dk_state = RECAL;
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splx(s);
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return 0;
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case RECAL:
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stat = inb(wdc+wd_altsts);
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if (stat & WDCS_ERR || wdsetctlr(du) < 0) {
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printf("wd%d: recal failed: stat %b error %b\n",
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du->dk_lunit, stat, WDCS_BITS, inb(wdc+wd_error),
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WDERR_BITS);
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if (du->dk_status & WDCS_ERR || wdsetctlr(du) != 0) {
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wderror(du, NULL, "wdcontrol: recal failed");
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lose:
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if (du->dk_status & WDCS_ERR)
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wdreset(du, 1);
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du->dk_state = WANTOPEN;
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if (++wdtab[ctrlr].b_errcnt < WDIORETRIES)
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goto tryagainrecal;
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@ -930,8 +911,7 @@ wdcontrol(bp)
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wdtab[ctrlr].b_errcnt = 0;
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du->dk_state = OPEN;
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/*
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* The rest of the initialization can be done
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* by normal means.
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* The rest of the initialization can be done by normal means.
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*/
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return 1;
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}
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@ -966,7 +946,7 @@ wdcommand(du, cylin, head, sector, count, cmd)
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if (cmd == WDCC_DIAGNOSE || cmd == WDCC_IDC)
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stat = wait_for_unbusy(du);
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else
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stat = wdc_wait(du, WDCS_READY);
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stat = wdwait(du, WDCS_READY);
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if (stat < 0)
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return -1;
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@ -992,7 +972,7 @@ wdcommand(du, cylin, head, sector, count, cmd)
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case WDCC_WRITE:
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return 0;
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case WDCC_IDC:
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return wdc_wait(du, WDCS_READY);
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return wdwait(du, WDCS_READY);
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case WDCC_READP:
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return wait_for_drq(du);
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}
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@ -1005,22 +985,17 @@ static int
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wdsetctlr(du)
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struct disk *du;
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{
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int stat, s;
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#ifdef WDDEBUG
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printf("wd(%d,%d) C%dH%dS%d\n", du->dk_ctrlr, du->dk_unit,
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du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks, du->dk_dd.d_nsectors);
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#endif
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s = splbio();
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stat = wdcommand(du, du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks - 1, 0,
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du->dk_dd.d_nsectors, WDCC_IDC);
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if (stat < 0 || stat & WDCS_ERR) {
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printf("wd%d: wdsetctlr: stat %b error %b\n", du->dk_lunit,
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stat, WDCS_BITS, inb(du->dk_port+wd_error), WDERR_BITS);
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if (wdcommand(du, du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks - 1, 0,
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du->dk_dd.d_nsectors, WDCC_IDC) != 0) {
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wderror(du, NULL, "wdsetctlr: failed");
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return -1;
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}
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splx(s);
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return 0;
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}
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@ -1031,24 +1006,18 @@ static int
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wdgetctlr(du)
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struct disk *du;
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{
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int stat, s, i;
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int i;
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char tb[DEV_BSIZE];
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struct wdparams *wp;
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s = splbio(); /* not called from intr level ... */
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stat = wdcommand(du, 0, 0, 0, 0, WDCC_READP);
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if (stat < 0 || stat & WDCS_ERR) {
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if (wdcommand(du, 0, 0, 0, 0, WDCC_READP) != 0) {
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/*
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* If WDCC_READP fails then we might have an old drive
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* so we try a seek to 0; if that passes then the
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* drive is there but it's OLD AND KRUSTY.
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*/
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stat = wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP);
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if (stat < 0 || stat & WDCS_ERR) {
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splx(s);
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if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0)
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return -1;
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}
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strncpy(du->dk_dd.d_typename, "ST506",
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sizeof du->dk_dd.d_typename);
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@ -1096,7 +1065,7 @@ wdgetctlr(du)
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/* XXX sometimes possibly needed */
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(void) inb(du->dk_port+wd_status);
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splx(s);
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return 0;
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}
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@ -1283,9 +1252,8 @@ wddump(dev)
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register struct disk *du; /* disk unit to do the IO */
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long num; /* number of sectors to write */
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int ctrlr, lunit, part;
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u_short wdc;
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long blkoff, blknum;
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long cylin, head, sector, stat;
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long cylin, head, sector;
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long secpertrk, secpercyl, nblocks;
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char *addr;
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static wddoingadump = 0;
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@ -1311,7 +1279,6 @@ wddump(dev)
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if (du == 0 || du->dk_state < OPEN || du->dk_flags & DKFL_WRITEPROT)
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return ENXIO;
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wdc = du->dk_port;
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ctrlr = du->dk_ctrlr;
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/* Convert to disk sectors */
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@ -1340,9 +1307,11 @@ wddump(dev)
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wddoingadump = 1;
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/* Recalibrate. */
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if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) < 0 ||
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wdsetctlr(du) < 0)
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if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0 ||
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wdsetctlr(du) != 0) {
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wderror(du, NULL, "wddump: recal failed");
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return EIO;
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}
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blknum = dumplo + blkoff;
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while (num > 0) {
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@ -1377,9 +1346,14 @@ wddump(dev)
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printf("cylin %d, head %d, sector %d, addr 0x%x", cylin, head,
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sector, addr);
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#endif
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stat = wdcommand(du, cylin, head, sector, 1, WDCC_WRITE);
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if (stat < 0 || stat & WDCS_ERR || wait_for_drq(du) < 0)
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if (wdcommand(du, cylin, head, sector, 1, WDCC_WRITE) != 0) {
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wderror(du, NULL, "wddump: wdcommand failed");
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return EIO;
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}
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if (wait_for_drq(du) != 0) {
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wderror(du, NULL, "wddump: timeout waiting for drq");
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return EIO;
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}
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#ifdef notdef /* cannot use this since this address was mapped differently */
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pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), VM_PROT_READ, TRUE);
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@ -1388,13 +1362,18 @@ wddump(dev)
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tlbflush();
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#endif
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outsw(wdc+wd_data, CADDR1 + ((int)addr & PGOFSET),
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outsw(du->dk_port+wd_data, CADDR1 + ((int)addr & PGOFSET),
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DEV_BSIZE / sizeof(short));
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/* Check data request (should be done). */
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stat = wait_for_ready(du);
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if (stat < 0 || stat & (WDCS_ERR | WDCS_DRQ))
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if (wait_for_ready(du) != 0) {
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wderror(du, NULL, "wddump: timeout waiting for ready");
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return EIO;
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}
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if (du->dk_status & WDCS_DRQ) {
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wderror(du, NULL, "wddump: extra drq");
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return EIO;
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}
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if ((unsigned)addr % 1048576 == 0)
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printf("%d ", num / (1048576 / DEV_BSIZE));
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@ -1443,8 +1422,7 @@ wdreset(du, err)
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struct disk *du;
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int err;
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{
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int wdc = du->dk_port;
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int stat;
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u_short wdc = du->dk_port;
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if (err)
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printf("wdc%d: busy too long, resetting\n", du->dk_ctrlr);
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@ -1462,28 +1440,30 @@ wdreset(du, err)
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}
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int
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wdc_wait(du, mask)
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wdwait(du, mask)
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struct disk *du;
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int mask;
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{
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int wdc = du->dk_port;
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u_short wdc = du->dk_port;
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int timeout = 0;
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int stat;
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u_char status;
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for (;;) {
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stat = inb(wdc+wd_altsts);
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||||
if ((stat & WDCS_BUSY) == 0 && (stat & mask) == mask)
|
||||
du->dk_status = status = inb(wdc+wd_altsts);
|
||||
if ((status & WDCS_BUSY) == 0 && (status & mask) == mask)
|
||||
break;
|
||||
if (++timeout > WDCNDELAY)
|
||||
return -1;
|
||||
delay(WDCDELAY);
|
||||
}
|
||||
if (status & WDCS_ERR)
|
||||
du->dk_error = inb(wdc+wd_error);
|
||||
#ifdef WDCNDELAY_DEBUG
|
||||
if (timeout > WDCNDELAY_DEBUG)
|
||||
printf("wdc%d: timeout took %dus\n", du->dk_ctrlr,
|
||||
printf("wdc%d: busy-wait took %dus\n", du->dk_ctrlr,
|
||||
WDCDELAY * timeout);
|
||||
#endif
|
||||
return stat;
|
||||
return status & WDCS_ERR;
|
||||
}
|
||||
|
||||
static void
|
||||
@ -1494,10 +1474,7 @@ wdtimeout(arg)
|
||||
struct disk *du = (void *)arg;
|
||||
|
||||
if (du->dk_timeout && --du->dk_timeout == 0) {
|
||||
int wdc = du->dk_port;
|
||||
|
||||
printf("wd%d: lost interrupt: stat %x error %x\n",
|
||||
du->dk_lunit, inb(wdc+wd_status), inb(wdc+wd_error));
|
||||
wderror(du, NULL, "lost interrupt");
|
||||
wdreset(du, 0);
|
||||
/* XXX Need to recalibrate and upload geometry. */
|
||||
du->dk_skip = 0;
|
||||
@ -1508,4 +1485,17 @@ wdtimeout(arg)
|
||||
splx(s);
|
||||
}
|
||||
|
||||
static void
|
||||
wderror(du, bp, msg)
|
||||
struct disk *du;
|
||||
struct buf *bp;
|
||||
char *msg;
|
||||
{
|
||||
if (bp)
|
||||
diskerr(bp, "wd", msg, LOG_PRINTF, du->dk_skip, &du->dk_dd);
|
||||
else
|
||||
printf("wd%d: %s: status %b error %b\n", du->dk_lunit, msg,
|
||||
du->dk_status, WDCS_BITS, du->dk_error, WDERR_BITS);
|
||||
}
|
||||
|
||||
#endif /* NWDC > 0 */
|
||||
|
||||
192
sys/dev/ata/wd.c
192
sys/dev/ata/wd.c
@ -35,7 +35,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
|
||||
* $Id: wd.c,v 1.62 1994/03/07 03:18:35 mycroft Exp $
|
||||
* $Id: wd.c,v 1.63 1994/03/07 05:54:44 mycroft Exp $
|
||||
*/
|
||||
|
||||
#define INSTRUMENT /* instrumentation stuff by Brad Parker */
|
||||
@ -156,11 +156,12 @@ static int wdgetctlr __P((struct disk *));
|
||||
static void bad144intern __P((struct disk *));
|
||||
static int wdreset __P((struct disk *, int));
|
||||
static void wdtimeout __P((caddr_t));
|
||||
void wddisksort __P((struct buf *dp, struct buf *bp));
|
||||
int wdc_wait __P((struct disk *, int));
|
||||
#define wait_for_drq(d) wdc_wait(d, WDCS_DRQ)
|
||||
#define wait_for_ready(d) wdc_wait(d, WDCS_READY | WDCS_SEEKCMPLT)
|
||||
#define wait_for_unbusy(d) wdc_wait(d, 0)
|
||||
void wddisksort __P((struct buf *, struct buf *));
|
||||
static void wderror __P((struct disk *, struct buf *, char *));
|
||||
int wdwait __P((struct disk *, int));
|
||||
#define wait_for_drq(d) wdwait(d, WDCS_DRQ)
|
||||
#define wait_for_ready(d) wdwait(d, WDCS_READY | WDCS_SEEKCMPLT)
|
||||
#define wait_for_unbusy(d) wdwait(d, 0)
|
||||
|
||||
/*
|
||||
* Probe for controller.
|
||||
@ -194,7 +195,7 @@ wdprobe(isa_dev)
|
||||
wdreset(du, 0);
|
||||
|
||||
/* execute a controller only command */
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_DIAGNOSE) < 0)
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_DIAGNOSE) != 0)
|
||||
goto nodevice;
|
||||
|
||||
free(du, M_TEMP);
|
||||
@ -405,7 +406,6 @@ wdstart(ctrlr)
|
||||
long secpertrk, secpercyl;
|
||||
int xfrblknum;
|
||||
int lunit;
|
||||
u_short wdc;
|
||||
|
||||
loop:
|
||||
/* is there a drive for the controller to do a transfer with? */
|
||||
@ -520,7 +520,6 @@ loop:
|
||||
sector++; /* sectors begin with 1, not 0 */
|
||||
|
||||
wdtab[ctrlr].b_active = 1; /* mark controller active */
|
||||
wdc = du->dk_port;
|
||||
|
||||
#ifdef INSTRUMENT
|
||||
/* instrumentation */
|
||||
@ -566,13 +565,14 @@ retry:
|
||||
#endif
|
||||
|
||||
/* initiate command! */
|
||||
if (wdcommand(du, cylin, head, sector, count, command) < 0) {
|
||||
while (wdcommand(du, cylin, head, sector, count, command) < 0) {
|
||||
wderror(du, NULL,
|
||||
"wdstart: timeout waiting for unbusy");
|
||||
wdreset(du, 1);
|
||||
goto retry;
|
||||
}
|
||||
#ifdef WDDEBUG
|
||||
printf("sector %d cylin %d head %d addr %x sts %x\n", sector,
|
||||
cylin, head, bp->b_un.b_addr, inb(wdc+wd_altsts));
|
||||
cylin, head, bp->b_un.b_addr, inb(du->dk_port+wd_altsts));
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -583,12 +583,13 @@ retry:
|
||||
return;
|
||||
|
||||
if (wait_for_drq(du) < 0) {
|
||||
/* XXX seems wrong */
|
||||
wdreset(du, 1);
|
||||
goto retry;
|
||||
}
|
||||
|
||||
/* then send it! */
|
||||
outsw(wdc+wd_data, bp->b_un.b_addr + du->dk_skip * DEV_BSIZE,
|
||||
outsw(du->dk_port+wd_data, bp->b_un.b_addr + du->dk_skip * DEV_BSIZE,
|
||||
DEV_BSIZE / sizeof(short));
|
||||
|
||||
du->dk_bc -= DEV_BSIZE;
|
||||
@ -606,8 +607,6 @@ wdintr(ctrlr)
|
||||
{
|
||||
register struct disk *du;
|
||||
register struct buf *bp, *dp;
|
||||
int stat;
|
||||
u_short wdc;
|
||||
|
||||
/* clear the pending interrupt */
|
||||
(void) inb(wdcontroller[ctrlr].dkc_port+wd_status);
|
||||
@ -620,17 +619,15 @@ wdintr(ctrlr)
|
||||
dp = wdtab[ctrlr].b_forw;
|
||||
bp = dp->b_actf;
|
||||
du = wddrives[WDUNIT(bp->b_dev)];
|
||||
wdc = du->dk_port;
|
||||
du->dk_timeout = 0;
|
||||
|
||||
#ifdef WDDEBUG
|
||||
printf("I%d ", ctrlr);
|
||||
#endif
|
||||
|
||||
stat = wait_for_unbusy(du);
|
||||
if (stat < 0) {
|
||||
printf("wdc%d: timeout waiting for unbusy\n", ctrlr);
|
||||
stat |= WDCS_ERR; /* XXX */
|
||||
if (wait_for_unbusy(du) < 0) {
|
||||
wderror(du, NULL, "wdintr: timeout waiting for unbusy");
|
||||
du->dk_status |= WDCS_ERR; /* XXX */
|
||||
}
|
||||
|
||||
/* is it not a transfer, but a control operation? */
|
||||
@ -647,12 +644,10 @@ wdintr(ctrlr)
|
||||
}
|
||||
|
||||
/* have we an error? */
|
||||
if (stat & (WDCS_ERR | WDCS_ECCCOR)) {
|
||||
if (du->dk_status & (WDCS_ERR | WDCS_ECCCOR)) {
|
||||
lose:
|
||||
du->dk_status = stat;
|
||||
du->dk_error = inb(wdc+wd_error);
|
||||
#ifdef WDDEBUG
|
||||
printf("stat %x error %x\n", stat, du->dk_error);
|
||||
wderror(du, NULL, "wdintr");
|
||||
#endif
|
||||
if ((du->dk_flags & DKFL_SINGLE) == 0) {
|
||||
du->dk_flags |= DKFL_ERROR;
|
||||
@ -667,23 +662,16 @@ wdintr(ctrlr)
|
||||
#endif
|
||||
|
||||
/* error or error correction? */
|
||||
if (stat & WDCS_ERR) {
|
||||
if (du->dk_status & WDCS_ERR) {
|
||||
if (++wdtab[ctrlr].b_errcnt < WDIORETRIES)
|
||||
wdtab[ctrlr].b_active = 0;
|
||||
else {
|
||||
diskerr(bp, "wd", "hard error", LOG_PRINTF,
|
||||
du->dk_skip, &du->dk_dd);
|
||||
#ifdef WDDEBUG
|
||||
printf("wd%d: stat %b error %b\n", du->dk_lunit,
|
||||
stat, WDCS_BITS, inb(wdc+wd_error),
|
||||
WDERR_BITS);
|
||||
#endif
|
||||
wderror(du, bp, "hard error");
|
||||
bp->b_error = EIO;
|
||||
bp->b_flags |= B_ERROR; /* flag the error */
|
||||
}
|
||||
} else
|
||||
diskerr(bp, "wd", "soft error", 0, du->dk_skip,
|
||||
&du->dk_dd);
|
||||
wderror(du, bp, "soft ecc");
|
||||
}
|
||||
|
||||
/*
|
||||
@ -696,20 +684,20 @@ wdintr(ctrlr)
|
||||
chk = min(DEV_BSIZE / sizeof(short), du->dk_bc / sizeof(short));
|
||||
|
||||
/* ready to receive data? */
|
||||
if (wait_for_drq(du) < 0) {
|
||||
printf("wdc%d: timeout waiting for drq\n", ctrlr);
|
||||
if (wait_for_drq(du) != 0) {
|
||||
wderror(du, NULL, "wdintr: read error detected late");
|
||||
goto lose;
|
||||
}
|
||||
|
||||
/* suck in data */
|
||||
insw(wdc+wd_data,
|
||||
insw(du->dk_port+wd_data,
|
||||
bp->b_un.b_addr + du->dk_skip * DEV_BSIZE, chk);
|
||||
du->dk_bc -= chk * sizeof(short);
|
||||
du->dk_bct -= chk * sizeof(short);
|
||||
|
||||
/* for obselete fractional sector reads */
|
||||
while (chk++ < (DEV_BSIZE / sizeof(short)))
|
||||
(void) inw(wdc+wd_data);
|
||||
(void) inw(du->dk_port+wd_data);
|
||||
}
|
||||
|
||||
wdxfer[du->dk_lunit]++;
|
||||
@ -723,8 +711,7 @@ outt:
|
||||
du->dk_skip++; /* Add to succ. sect */
|
||||
du->dk_skipm++; /* Add to succ. sect for multitransfer */
|
||||
if (wdtab[ctrlr].b_errcnt)
|
||||
diskerr(bp, "wd", "soft error", 0, du->dk_skip,
|
||||
&du->dk_dd);
|
||||
wderror(du, bp, "soft error");
|
||||
wdtab[ctrlr].b_errcnt = 0;
|
||||
|
||||
/* see if more to transfer */
|
||||
@ -891,35 +878,29 @@ wdcontrol(bp)
|
||||
struct buf *bp;
|
||||
{
|
||||
struct disk *du;
|
||||
int stat;
|
||||
int s, ctrlr;
|
||||
u_short wdc;
|
||||
int ctrlr;
|
||||
|
||||
du = wddrives[WDUNIT(bp->b_dev)];
|
||||
ctrlr = du->dk_ctrlr;
|
||||
wdc = du->dk_port;
|
||||
|
||||
switch (du->dk_state) {
|
||||
case WANTOPEN: /* set SDH, step rate, do restore */
|
||||
tryagainrecal:
|
||||
s = splbio(); /* not called from intr level ... */
|
||||
wdgetctlr(du); /* XXX Is this necessary? */
|
||||
wdtab[ctrlr].b_active = 1;
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) < 0) {
|
||||
wdreset(du, 1);
|
||||
splx(s);
|
||||
goto tryagainrecal;
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0) {
|
||||
wderror(du, 0, "wdcontrol: wdcommand failed");
|
||||
goto lose;
|
||||
}
|
||||
du->dk_state = RECAL;
|
||||
splx(s);
|
||||
return 0;
|
||||
|
||||
case RECAL:
|
||||
stat = inb(wdc+wd_altsts);
|
||||
if (stat & WDCS_ERR || wdsetctlr(du) < 0) {
|
||||
printf("wd%d: recal failed: stat %b error %b\n",
|
||||
du->dk_lunit, stat, WDCS_BITS, inb(wdc+wd_error),
|
||||
WDERR_BITS);
|
||||
if (du->dk_status & WDCS_ERR || wdsetctlr(du) != 0) {
|
||||
wderror(du, NULL, "wdcontrol: recal failed");
|
||||
lose:
|
||||
if (du->dk_status & WDCS_ERR)
|
||||
wdreset(du, 1);
|
||||
du->dk_state = WANTOPEN;
|
||||
if (++wdtab[ctrlr].b_errcnt < WDIORETRIES)
|
||||
goto tryagainrecal;
|
||||
@ -930,8 +911,7 @@ wdcontrol(bp)
|
||||
wdtab[ctrlr].b_errcnt = 0;
|
||||
du->dk_state = OPEN;
|
||||
/*
|
||||
* The rest of the initialization can be done
|
||||
* by normal means.
|
||||
* The rest of the initialization can be done by normal means.
|
||||
*/
|
||||
return 1;
|
||||
}
|
||||
@ -966,7 +946,7 @@ wdcommand(du, cylin, head, sector, count, cmd)
|
||||
if (cmd == WDCC_DIAGNOSE || cmd == WDCC_IDC)
|
||||
stat = wait_for_unbusy(du);
|
||||
else
|
||||
stat = wdc_wait(du, WDCS_READY);
|
||||
stat = wdwait(du, WDCS_READY);
|
||||
if (stat < 0)
|
||||
return -1;
|
||||
|
||||
@ -992,7 +972,7 @@ wdcommand(du, cylin, head, sector, count, cmd)
|
||||
case WDCC_WRITE:
|
||||
return 0;
|
||||
case WDCC_IDC:
|
||||
return wdc_wait(du, WDCS_READY);
|
||||
return wdwait(du, WDCS_READY);
|
||||
case WDCC_READP:
|
||||
return wait_for_drq(du);
|
||||
}
|
||||
@ -1005,22 +985,17 @@ static int
|
||||
wdsetctlr(du)
|
||||
struct disk *du;
|
||||
{
|
||||
int stat, s;
|
||||
|
||||
|
||||
#ifdef WDDEBUG
|
||||
printf("wd(%d,%d) C%dH%dS%d\n", du->dk_ctrlr, du->dk_unit,
|
||||
du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks, du->dk_dd.d_nsectors);
|
||||
#endif
|
||||
|
||||
s = splbio();
|
||||
stat = wdcommand(du, du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks - 1, 0,
|
||||
du->dk_dd.d_nsectors, WDCC_IDC);
|
||||
if (stat < 0 || stat & WDCS_ERR) {
|
||||
printf("wd%d: wdsetctlr: stat %b error %b\n", du->dk_lunit,
|
||||
stat, WDCS_BITS, inb(du->dk_port+wd_error), WDERR_BITS);
|
||||
if (wdcommand(du, du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks - 1, 0,
|
||||
du->dk_dd.d_nsectors, WDCC_IDC) != 0) {
|
||||
wderror(du, NULL, "wdsetctlr: failed");
|
||||
return -1;
|
||||
}
|
||||
splx(s);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1031,24 +1006,18 @@ static int
|
||||
wdgetctlr(du)
|
||||
struct disk *du;
|
||||
{
|
||||
int stat, s, i;
|
||||
int i;
|
||||
char tb[DEV_BSIZE];
|
||||
struct wdparams *wp;
|
||||
|
||||
s = splbio(); /* not called from intr level ... */
|
||||
|
||||
stat = wdcommand(du, 0, 0, 0, 0, WDCC_READP);
|
||||
if (stat < 0 || stat & WDCS_ERR) {
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_READP) != 0) {
|
||||
/*
|
||||
* If WDCC_READP fails then we might have an old drive
|
||||
* so we try a seek to 0; if that passes then the
|
||||
* drive is there but it's OLD AND KRUSTY.
|
||||
*/
|
||||
stat = wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP);
|
||||
if (stat < 0 || stat & WDCS_ERR) {
|
||||
splx(s);
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0)
|
||||
return -1;
|
||||
}
|
||||
|
||||
strncpy(du->dk_dd.d_typename, "ST506",
|
||||
sizeof du->dk_dd.d_typename);
|
||||
@ -1096,7 +1065,7 @@ wdgetctlr(du)
|
||||
|
||||
/* XXX sometimes possibly needed */
|
||||
(void) inb(du->dk_port+wd_status);
|
||||
splx(s);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1283,9 +1252,8 @@ wddump(dev)
|
||||
register struct disk *du; /* disk unit to do the IO */
|
||||
long num; /* number of sectors to write */
|
||||
int ctrlr, lunit, part;
|
||||
u_short wdc;
|
||||
long blkoff, blknum;
|
||||
long cylin, head, sector, stat;
|
||||
long cylin, head, sector;
|
||||
long secpertrk, secpercyl, nblocks;
|
||||
char *addr;
|
||||
static wddoingadump = 0;
|
||||
@ -1311,7 +1279,6 @@ wddump(dev)
|
||||
if (du == 0 || du->dk_state < OPEN || du->dk_flags & DKFL_WRITEPROT)
|
||||
return ENXIO;
|
||||
|
||||
wdc = du->dk_port;
|
||||
ctrlr = du->dk_ctrlr;
|
||||
|
||||
/* Convert to disk sectors */
|
||||
@ -1340,9 +1307,11 @@ wddump(dev)
|
||||
wddoingadump = 1;
|
||||
|
||||
/* Recalibrate. */
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) < 0 ||
|
||||
wdsetctlr(du) < 0)
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0 ||
|
||||
wdsetctlr(du) != 0) {
|
||||
wderror(du, NULL, "wddump: recal failed");
|
||||
return EIO;
|
||||
}
|
||||
|
||||
blknum = dumplo + blkoff;
|
||||
while (num > 0) {
|
||||
@ -1377,9 +1346,14 @@ wddump(dev)
|
||||
printf("cylin %d, head %d, sector %d, addr 0x%x", cylin, head,
|
||||
sector, addr);
|
||||
#endif
|
||||
stat = wdcommand(du, cylin, head, sector, 1, WDCC_WRITE);
|
||||
if (stat < 0 || stat & WDCS_ERR || wait_for_drq(du) < 0)
|
||||
if (wdcommand(du, cylin, head, sector, 1, WDCC_WRITE) != 0) {
|
||||
wderror(du, NULL, "wddump: wdcommand failed");
|
||||
return EIO;
|
||||
}
|
||||
if (wait_for_drq(du) != 0) {
|
||||
wderror(du, NULL, "wddump: timeout waiting for drq");
|
||||
return EIO;
|
||||
}
|
||||
|
||||
#ifdef notdef /* cannot use this since this address was mapped differently */
|
||||
pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), VM_PROT_READ, TRUE);
|
||||
@ -1388,13 +1362,18 @@ wddump(dev)
|
||||
tlbflush();
|
||||
#endif
|
||||
|
||||
outsw(wdc+wd_data, CADDR1 + ((int)addr & PGOFSET),
|
||||
outsw(du->dk_port+wd_data, CADDR1 + ((int)addr & PGOFSET),
|
||||
DEV_BSIZE / sizeof(short));
|
||||
|
||||
/* Check data request (should be done). */
|
||||
stat = wait_for_ready(du);
|
||||
if (stat < 0 || stat & (WDCS_ERR | WDCS_DRQ))
|
||||
if (wait_for_ready(du) != 0) {
|
||||
wderror(du, NULL, "wddump: timeout waiting for ready");
|
||||
return EIO;
|
||||
}
|
||||
if (du->dk_status & WDCS_DRQ) {
|
||||
wderror(du, NULL, "wddump: extra drq");
|
||||
return EIO;
|
||||
}
|
||||
|
||||
if ((unsigned)addr % 1048576 == 0)
|
||||
printf("%d ", num / (1048576 / DEV_BSIZE));
|
||||
@ -1443,8 +1422,7 @@ wdreset(du, err)
|
||||
struct disk *du;
|
||||
int err;
|
||||
{
|
||||
int wdc = du->dk_port;
|
||||
int stat;
|
||||
u_short wdc = du->dk_port;
|
||||
|
||||
if (err)
|
||||
printf("wdc%d: busy too long, resetting\n", du->dk_ctrlr);
|
||||
@ -1462,28 +1440,30 @@ wdreset(du, err)
|
||||
}
|
||||
|
||||
int
|
||||
wdc_wait(du, mask)
|
||||
wdwait(du, mask)
|
||||
struct disk *du;
|
||||
int mask;
|
||||
{
|
||||
int wdc = du->dk_port;
|
||||
u_short wdc = du->dk_port;
|
||||
int timeout = 0;
|
||||
int stat;
|
||||
u_char status;
|
||||
|
||||
for (;;) {
|
||||
stat = inb(wdc+wd_altsts);
|
||||
if ((stat & WDCS_BUSY) == 0 && (stat & mask) == mask)
|
||||
du->dk_status = status = inb(wdc+wd_altsts);
|
||||
if ((status & WDCS_BUSY) == 0 && (status & mask) == mask)
|
||||
break;
|
||||
if (++timeout > WDCNDELAY)
|
||||
return -1;
|
||||
delay(WDCDELAY);
|
||||
}
|
||||
if (status & WDCS_ERR)
|
||||
du->dk_error = inb(wdc+wd_error);
|
||||
#ifdef WDCNDELAY_DEBUG
|
||||
if (timeout > WDCNDELAY_DEBUG)
|
||||
printf("wdc%d: timeout took %dus\n", du->dk_ctrlr,
|
||||
printf("wdc%d: busy-wait took %dus\n", du->dk_ctrlr,
|
||||
WDCDELAY * timeout);
|
||||
#endif
|
||||
return stat;
|
||||
return status & WDCS_ERR;
|
||||
}
|
||||
|
||||
static void
|
||||
@ -1494,10 +1474,7 @@ wdtimeout(arg)
|
||||
struct disk *du = (void *)arg;
|
||||
|
||||
if (du->dk_timeout && --du->dk_timeout == 0) {
|
||||
int wdc = du->dk_port;
|
||||
|
||||
printf("wd%d: lost interrupt: stat %x error %x\n",
|
||||
du->dk_lunit, inb(wdc+wd_status), inb(wdc+wd_error));
|
||||
wderror(du, NULL, "lost interrupt");
|
||||
wdreset(du, 0);
|
||||
/* XXX Need to recalibrate and upload geometry. */
|
||||
du->dk_skip = 0;
|
||||
@ -1508,4 +1485,17 @@ wdtimeout(arg)
|
||||
splx(s);
|
||||
}
|
||||
|
||||
static void
|
||||
wderror(du, bp, msg)
|
||||
struct disk *du;
|
||||
struct buf *bp;
|
||||
char *msg;
|
||||
{
|
||||
if (bp)
|
||||
diskerr(bp, "wd", msg, LOG_PRINTF, du->dk_skip, &du->dk_dd);
|
||||
else
|
||||
printf("wd%d: %s: status %b error %b\n", du->dk_lunit, msg,
|
||||
du->dk_status, WDCS_BITS, du->dk_error, WDERR_BITS);
|
||||
}
|
||||
|
||||
#endif /* NWDC > 0 */
|
||||
|
||||
192
sys/dev/isa/wd.c
192
sys/dev/isa/wd.c
@ -35,7 +35,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
|
||||
* $Id: wd.c,v 1.62 1994/03/07 03:18:35 mycroft Exp $
|
||||
* $Id: wd.c,v 1.63 1994/03/07 05:54:44 mycroft Exp $
|
||||
*/
|
||||
|
||||
#define INSTRUMENT /* instrumentation stuff by Brad Parker */
|
||||
@ -156,11 +156,12 @@ static int wdgetctlr __P((struct disk *));
|
||||
static void bad144intern __P((struct disk *));
|
||||
static int wdreset __P((struct disk *, int));
|
||||
static void wdtimeout __P((caddr_t));
|
||||
void wddisksort __P((struct buf *dp, struct buf *bp));
|
||||
int wdc_wait __P((struct disk *, int));
|
||||
#define wait_for_drq(d) wdc_wait(d, WDCS_DRQ)
|
||||
#define wait_for_ready(d) wdc_wait(d, WDCS_READY | WDCS_SEEKCMPLT)
|
||||
#define wait_for_unbusy(d) wdc_wait(d, 0)
|
||||
void wddisksort __P((struct buf *, struct buf *));
|
||||
static void wderror __P((struct disk *, struct buf *, char *));
|
||||
int wdwait __P((struct disk *, int));
|
||||
#define wait_for_drq(d) wdwait(d, WDCS_DRQ)
|
||||
#define wait_for_ready(d) wdwait(d, WDCS_READY | WDCS_SEEKCMPLT)
|
||||
#define wait_for_unbusy(d) wdwait(d, 0)
|
||||
|
||||
/*
|
||||
* Probe for controller.
|
||||
@ -194,7 +195,7 @@ wdprobe(isa_dev)
|
||||
wdreset(du, 0);
|
||||
|
||||
/* execute a controller only command */
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_DIAGNOSE) < 0)
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_DIAGNOSE) != 0)
|
||||
goto nodevice;
|
||||
|
||||
free(du, M_TEMP);
|
||||
@ -405,7 +406,6 @@ wdstart(ctrlr)
|
||||
long secpertrk, secpercyl;
|
||||
int xfrblknum;
|
||||
int lunit;
|
||||
u_short wdc;
|
||||
|
||||
loop:
|
||||
/* is there a drive for the controller to do a transfer with? */
|
||||
@ -520,7 +520,6 @@ loop:
|
||||
sector++; /* sectors begin with 1, not 0 */
|
||||
|
||||
wdtab[ctrlr].b_active = 1; /* mark controller active */
|
||||
wdc = du->dk_port;
|
||||
|
||||
#ifdef INSTRUMENT
|
||||
/* instrumentation */
|
||||
@ -566,13 +565,14 @@ retry:
|
||||
#endif
|
||||
|
||||
/* initiate command! */
|
||||
if (wdcommand(du, cylin, head, sector, count, command) < 0) {
|
||||
while (wdcommand(du, cylin, head, sector, count, command) < 0) {
|
||||
wderror(du, NULL,
|
||||
"wdstart: timeout waiting for unbusy");
|
||||
wdreset(du, 1);
|
||||
goto retry;
|
||||
}
|
||||
#ifdef WDDEBUG
|
||||
printf("sector %d cylin %d head %d addr %x sts %x\n", sector,
|
||||
cylin, head, bp->b_un.b_addr, inb(wdc+wd_altsts));
|
||||
cylin, head, bp->b_un.b_addr, inb(du->dk_port+wd_altsts));
|
||||
#endif
|
||||
}
|
||||
|
||||
@ -583,12 +583,13 @@ retry:
|
||||
return;
|
||||
|
||||
if (wait_for_drq(du) < 0) {
|
||||
/* XXX seems wrong */
|
||||
wdreset(du, 1);
|
||||
goto retry;
|
||||
}
|
||||
|
||||
/* then send it! */
|
||||
outsw(wdc+wd_data, bp->b_un.b_addr + du->dk_skip * DEV_BSIZE,
|
||||
outsw(du->dk_port+wd_data, bp->b_un.b_addr + du->dk_skip * DEV_BSIZE,
|
||||
DEV_BSIZE / sizeof(short));
|
||||
|
||||
du->dk_bc -= DEV_BSIZE;
|
||||
@ -606,8 +607,6 @@ wdintr(ctrlr)
|
||||
{
|
||||
register struct disk *du;
|
||||
register struct buf *bp, *dp;
|
||||
int stat;
|
||||
u_short wdc;
|
||||
|
||||
/* clear the pending interrupt */
|
||||
(void) inb(wdcontroller[ctrlr].dkc_port+wd_status);
|
||||
@ -620,17 +619,15 @@ wdintr(ctrlr)
|
||||
dp = wdtab[ctrlr].b_forw;
|
||||
bp = dp->b_actf;
|
||||
du = wddrives[WDUNIT(bp->b_dev)];
|
||||
wdc = du->dk_port;
|
||||
du->dk_timeout = 0;
|
||||
|
||||
#ifdef WDDEBUG
|
||||
printf("I%d ", ctrlr);
|
||||
#endif
|
||||
|
||||
stat = wait_for_unbusy(du);
|
||||
if (stat < 0) {
|
||||
printf("wdc%d: timeout waiting for unbusy\n", ctrlr);
|
||||
stat |= WDCS_ERR; /* XXX */
|
||||
if (wait_for_unbusy(du) < 0) {
|
||||
wderror(du, NULL, "wdintr: timeout waiting for unbusy");
|
||||
du->dk_status |= WDCS_ERR; /* XXX */
|
||||
}
|
||||
|
||||
/* is it not a transfer, but a control operation? */
|
||||
@ -647,12 +644,10 @@ wdintr(ctrlr)
|
||||
}
|
||||
|
||||
/* have we an error? */
|
||||
if (stat & (WDCS_ERR | WDCS_ECCCOR)) {
|
||||
if (du->dk_status & (WDCS_ERR | WDCS_ECCCOR)) {
|
||||
lose:
|
||||
du->dk_status = stat;
|
||||
du->dk_error = inb(wdc+wd_error);
|
||||
#ifdef WDDEBUG
|
||||
printf("stat %x error %x\n", stat, du->dk_error);
|
||||
wderror(du, NULL, "wdintr");
|
||||
#endif
|
||||
if ((du->dk_flags & DKFL_SINGLE) == 0) {
|
||||
du->dk_flags |= DKFL_ERROR;
|
||||
@ -667,23 +662,16 @@ wdintr(ctrlr)
|
||||
#endif
|
||||
|
||||
/* error or error correction? */
|
||||
if (stat & WDCS_ERR) {
|
||||
if (du->dk_status & WDCS_ERR) {
|
||||
if (++wdtab[ctrlr].b_errcnt < WDIORETRIES)
|
||||
wdtab[ctrlr].b_active = 0;
|
||||
else {
|
||||
diskerr(bp, "wd", "hard error", LOG_PRINTF,
|
||||
du->dk_skip, &du->dk_dd);
|
||||
#ifdef WDDEBUG
|
||||
printf("wd%d: stat %b error %b\n", du->dk_lunit,
|
||||
stat, WDCS_BITS, inb(wdc+wd_error),
|
||||
WDERR_BITS);
|
||||
#endif
|
||||
wderror(du, bp, "hard error");
|
||||
bp->b_error = EIO;
|
||||
bp->b_flags |= B_ERROR; /* flag the error */
|
||||
}
|
||||
} else
|
||||
diskerr(bp, "wd", "soft error", 0, du->dk_skip,
|
||||
&du->dk_dd);
|
||||
wderror(du, bp, "soft ecc");
|
||||
}
|
||||
|
||||
/*
|
||||
@ -696,20 +684,20 @@ wdintr(ctrlr)
|
||||
chk = min(DEV_BSIZE / sizeof(short), du->dk_bc / sizeof(short));
|
||||
|
||||
/* ready to receive data? */
|
||||
if (wait_for_drq(du) < 0) {
|
||||
printf("wdc%d: timeout waiting for drq\n", ctrlr);
|
||||
if (wait_for_drq(du) != 0) {
|
||||
wderror(du, NULL, "wdintr: read error detected late");
|
||||
goto lose;
|
||||
}
|
||||
|
||||
/* suck in data */
|
||||
insw(wdc+wd_data,
|
||||
insw(du->dk_port+wd_data,
|
||||
bp->b_un.b_addr + du->dk_skip * DEV_BSIZE, chk);
|
||||
du->dk_bc -= chk * sizeof(short);
|
||||
du->dk_bct -= chk * sizeof(short);
|
||||
|
||||
/* for obselete fractional sector reads */
|
||||
while (chk++ < (DEV_BSIZE / sizeof(short)))
|
||||
(void) inw(wdc+wd_data);
|
||||
(void) inw(du->dk_port+wd_data);
|
||||
}
|
||||
|
||||
wdxfer[du->dk_lunit]++;
|
||||
@ -723,8 +711,7 @@ outt:
|
||||
du->dk_skip++; /* Add to succ. sect */
|
||||
du->dk_skipm++; /* Add to succ. sect for multitransfer */
|
||||
if (wdtab[ctrlr].b_errcnt)
|
||||
diskerr(bp, "wd", "soft error", 0, du->dk_skip,
|
||||
&du->dk_dd);
|
||||
wderror(du, bp, "soft error");
|
||||
wdtab[ctrlr].b_errcnt = 0;
|
||||
|
||||
/* see if more to transfer */
|
||||
@ -891,35 +878,29 @@ wdcontrol(bp)
|
||||
struct buf *bp;
|
||||
{
|
||||
struct disk *du;
|
||||
int stat;
|
||||
int s, ctrlr;
|
||||
u_short wdc;
|
||||
int ctrlr;
|
||||
|
||||
du = wddrives[WDUNIT(bp->b_dev)];
|
||||
ctrlr = du->dk_ctrlr;
|
||||
wdc = du->dk_port;
|
||||
|
||||
switch (du->dk_state) {
|
||||
case WANTOPEN: /* set SDH, step rate, do restore */
|
||||
tryagainrecal:
|
||||
s = splbio(); /* not called from intr level ... */
|
||||
wdgetctlr(du); /* XXX Is this necessary? */
|
||||
wdtab[ctrlr].b_active = 1;
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) < 0) {
|
||||
wdreset(du, 1);
|
||||
splx(s);
|
||||
goto tryagainrecal;
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0) {
|
||||
wderror(du, 0, "wdcontrol: wdcommand failed");
|
||||
goto lose;
|
||||
}
|
||||
du->dk_state = RECAL;
|
||||
splx(s);
|
||||
return 0;
|
||||
|
||||
case RECAL:
|
||||
stat = inb(wdc+wd_altsts);
|
||||
if (stat & WDCS_ERR || wdsetctlr(du) < 0) {
|
||||
printf("wd%d: recal failed: stat %b error %b\n",
|
||||
du->dk_lunit, stat, WDCS_BITS, inb(wdc+wd_error),
|
||||
WDERR_BITS);
|
||||
if (du->dk_status & WDCS_ERR || wdsetctlr(du) != 0) {
|
||||
wderror(du, NULL, "wdcontrol: recal failed");
|
||||
lose:
|
||||
if (du->dk_status & WDCS_ERR)
|
||||
wdreset(du, 1);
|
||||
du->dk_state = WANTOPEN;
|
||||
if (++wdtab[ctrlr].b_errcnt < WDIORETRIES)
|
||||
goto tryagainrecal;
|
||||
@ -930,8 +911,7 @@ wdcontrol(bp)
|
||||
wdtab[ctrlr].b_errcnt = 0;
|
||||
du->dk_state = OPEN;
|
||||
/*
|
||||
* The rest of the initialization can be done
|
||||
* by normal means.
|
||||
* The rest of the initialization can be done by normal means.
|
||||
*/
|
||||
return 1;
|
||||
}
|
||||
@ -966,7 +946,7 @@ wdcommand(du, cylin, head, sector, count, cmd)
|
||||
if (cmd == WDCC_DIAGNOSE || cmd == WDCC_IDC)
|
||||
stat = wait_for_unbusy(du);
|
||||
else
|
||||
stat = wdc_wait(du, WDCS_READY);
|
||||
stat = wdwait(du, WDCS_READY);
|
||||
if (stat < 0)
|
||||
return -1;
|
||||
|
||||
@ -992,7 +972,7 @@ wdcommand(du, cylin, head, sector, count, cmd)
|
||||
case WDCC_WRITE:
|
||||
return 0;
|
||||
case WDCC_IDC:
|
||||
return wdc_wait(du, WDCS_READY);
|
||||
return wdwait(du, WDCS_READY);
|
||||
case WDCC_READP:
|
||||
return wait_for_drq(du);
|
||||
}
|
||||
@ -1005,22 +985,17 @@ static int
|
||||
wdsetctlr(du)
|
||||
struct disk *du;
|
||||
{
|
||||
int stat, s;
|
||||
|
||||
|
||||
#ifdef WDDEBUG
|
||||
printf("wd(%d,%d) C%dH%dS%d\n", du->dk_ctrlr, du->dk_unit,
|
||||
du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks, du->dk_dd.d_nsectors);
|
||||
#endif
|
||||
|
||||
s = splbio();
|
||||
stat = wdcommand(du, du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks - 1, 0,
|
||||
du->dk_dd.d_nsectors, WDCC_IDC);
|
||||
if (stat < 0 || stat & WDCS_ERR) {
|
||||
printf("wd%d: wdsetctlr: stat %b error %b\n", du->dk_lunit,
|
||||
stat, WDCS_BITS, inb(du->dk_port+wd_error), WDERR_BITS);
|
||||
if (wdcommand(du, du->dk_dd.d_ncylinders, du->dk_dd.d_ntracks - 1, 0,
|
||||
du->dk_dd.d_nsectors, WDCC_IDC) != 0) {
|
||||
wderror(du, NULL, "wdsetctlr: failed");
|
||||
return -1;
|
||||
}
|
||||
splx(s);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1031,24 +1006,18 @@ static int
|
||||
wdgetctlr(du)
|
||||
struct disk *du;
|
||||
{
|
||||
int stat, s, i;
|
||||
int i;
|
||||
char tb[DEV_BSIZE];
|
||||
struct wdparams *wp;
|
||||
|
||||
s = splbio(); /* not called from intr level ... */
|
||||
|
||||
stat = wdcommand(du, 0, 0, 0, 0, WDCC_READP);
|
||||
if (stat < 0 || stat & WDCS_ERR) {
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_READP) != 0) {
|
||||
/*
|
||||
* If WDCC_READP fails then we might have an old drive
|
||||
* so we try a seek to 0; if that passes then the
|
||||
* drive is there but it's OLD AND KRUSTY.
|
||||
*/
|
||||
stat = wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP);
|
||||
if (stat < 0 || stat & WDCS_ERR) {
|
||||
splx(s);
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0)
|
||||
return -1;
|
||||
}
|
||||
|
||||
strncpy(du->dk_dd.d_typename, "ST506",
|
||||
sizeof du->dk_dd.d_typename);
|
||||
@ -1096,7 +1065,7 @@ wdgetctlr(du)
|
||||
|
||||
/* XXX sometimes possibly needed */
|
||||
(void) inb(du->dk_port+wd_status);
|
||||
splx(s);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1283,9 +1252,8 @@ wddump(dev)
|
||||
register struct disk *du; /* disk unit to do the IO */
|
||||
long num; /* number of sectors to write */
|
||||
int ctrlr, lunit, part;
|
||||
u_short wdc;
|
||||
long blkoff, blknum;
|
||||
long cylin, head, sector, stat;
|
||||
long cylin, head, sector;
|
||||
long secpertrk, secpercyl, nblocks;
|
||||
char *addr;
|
||||
static wddoingadump = 0;
|
||||
@ -1311,7 +1279,6 @@ wddump(dev)
|
||||
if (du == 0 || du->dk_state < OPEN || du->dk_flags & DKFL_WRITEPROT)
|
||||
return ENXIO;
|
||||
|
||||
wdc = du->dk_port;
|
||||
ctrlr = du->dk_ctrlr;
|
||||
|
||||
/* Convert to disk sectors */
|
||||
@ -1340,9 +1307,11 @@ wddump(dev)
|
||||
wddoingadump = 1;
|
||||
|
||||
/* Recalibrate. */
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) < 0 ||
|
||||
wdsetctlr(du) < 0)
|
||||
if (wdcommand(du, 0, 0, 0, 0, WDCC_RESTORE | WD_STEP) != 0 ||
|
||||
wdsetctlr(du) != 0) {
|
||||
wderror(du, NULL, "wddump: recal failed");
|
||||
return EIO;
|
||||
}
|
||||
|
||||
blknum = dumplo + blkoff;
|
||||
while (num > 0) {
|
||||
@ -1377,9 +1346,14 @@ wddump(dev)
|
||||
printf("cylin %d, head %d, sector %d, addr 0x%x", cylin, head,
|
||||
sector, addr);
|
||||
#endif
|
||||
stat = wdcommand(du, cylin, head, sector, 1, WDCC_WRITE);
|
||||
if (stat < 0 || stat & WDCS_ERR || wait_for_drq(du) < 0)
|
||||
if (wdcommand(du, cylin, head, sector, 1, WDCC_WRITE) != 0) {
|
||||
wderror(du, NULL, "wddump: wdcommand failed");
|
||||
return EIO;
|
||||
}
|
||||
if (wait_for_drq(du) != 0) {
|
||||
wderror(du, NULL, "wddump: timeout waiting for drq");
|
||||
return EIO;
|
||||
}
|
||||
|
||||
#ifdef notdef /* cannot use this since this address was mapped differently */
|
||||
pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), VM_PROT_READ, TRUE);
|
||||
@ -1388,13 +1362,18 @@ wddump(dev)
|
||||
tlbflush();
|
||||
#endif
|
||||
|
||||
outsw(wdc+wd_data, CADDR1 + ((int)addr & PGOFSET),
|
||||
outsw(du->dk_port+wd_data, CADDR1 + ((int)addr & PGOFSET),
|
||||
DEV_BSIZE / sizeof(short));
|
||||
|
||||
/* Check data request (should be done). */
|
||||
stat = wait_for_ready(du);
|
||||
if (stat < 0 || stat & (WDCS_ERR | WDCS_DRQ))
|
||||
if (wait_for_ready(du) != 0) {
|
||||
wderror(du, NULL, "wddump: timeout waiting for ready");
|
||||
return EIO;
|
||||
}
|
||||
if (du->dk_status & WDCS_DRQ) {
|
||||
wderror(du, NULL, "wddump: extra drq");
|
||||
return EIO;
|
||||
}
|
||||
|
||||
if ((unsigned)addr % 1048576 == 0)
|
||||
printf("%d ", num / (1048576 / DEV_BSIZE));
|
||||
@ -1443,8 +1422,7 @@ wdreset(du, err)
|
||||
struct disk *du;
|
||||
int err;
|
||||
{
|
||||
int wdc = du->dk_port;
|
||||
int stat;
|
||||
u_short wdc = du->dk_port;
|
||||
|
||||
if (err)
|
||||
printf("wdc%d: busy too long, resetting\n", du->dk_ctrlr);
|
||||
@ -1462,28 +1440,30 @@ wdreset(du, err)
|
||||
}
|
||||
|
||||
int
|
||||
wdc_wait(du, mask)
|
||||
wdwait(du, mask)
|
||||
struct disk *du;
|
||||
int mask;
|
||||
{
|
||||
int wdc = du->dk_port;
|
||||
u_short wdc = du->dk_port;
|
||||
int timeout = 0;
|
||||
int stat;
|
||||
u_char status;
|
||||
|
||||
for (;;) {
|
||||
stat = inb(wdc+wd_altsts);
|
||||
if ((stat & WDCS_BUSY) == 0 && (stat & mask) == mask)
|
||||
du->dk_status = status = inb(wdc+wd_altsts);
|
||||
if ((status & WDCS_BUSY) == 0 && (status & mask) == mask)
|
||||
break;
|
||||
if (++timeout > WDCNDELAY)
|
||||
return -1;
|
||||
delay(WDCDELAY);
|
||||
}
|
||||
if (status & WDCS_ERR)
|
||||
du->dk_error = inb(wdc+wd_error);
|
||||
#ifdef WDCNDELAY_DEBUG
|
||||
if (timeout > WDCNDELAY_DEBUG)
|
||||
printf("wdc%d: timeout took %dus\n", du->dk_ctrlr,
|
||||
printf("wdc%d: busy-wait took %dus\n", du->dk_ctrlr,
|
||||
WDCDELAY * timeout);
|
||||
#endif
|
||||
return stat;
|
||||
return status & WDCS_ERR;
|
||||
}
|
||||
|
||||
static void
|
||||
@ -1494,10 +1474,7 @@ wdtimeout(arg)
|
||||
struct disk *du = (void *)arg;
|
||||
|
||||
if (du->dk_timeout && --du->dk_timeout == 0) {
|
||||
int wdc = du->dk_port;
|
||||
|
||||
printf("wd%d: lost interrupt: stat %x error %x\n",
|
||||
du->dk_lunit, inb(wdc+wd_status), inb(wdc+wd_error));
|
||||
wderror(du, NULL, "lost interrupt");
|
||||
wdreset(du, 0);
|
||||
/* XXX Need to recalibrate and upload geometry. */
|
||||
du->dk_skip = 0;
|
||||
@ -1508,4 +1485,17 @@ wdtimeout(arg)
|
||||
splx(s);
|
||||
}
|
||||
|
||||
static void
|
||||
wderror(du, bp, msg)
|
||||
struct disk *du;
|
||||
struct buf *bp;
|
||||
char *msg;
|
||||
{
|
||||
if (bp)
|
||||
diskerr(bp, "wd", msg, LOG_PRINTF, du->dk_skip, &du->dk_dd);
|
||||
else
|
||||
printf("wd%d: %s: status %b error %b\n", du->dk_lunit, msg,
|
||||
du->dk_status, WDCS_BITS, du->dk_error, WDERR_BITS);
|
||||
}
|
||||
|
||||
#endif /* NWDC > 0 */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user