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Various cleanup, and fix last night's bug.

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This commit is contained in:
mycroft 1994-02-26 17:10:12 +00:00
parent 188f08ecf9
commit aeae0fd5e3
3 changed files with 138 additions and 177 deletions
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105
sys/arch/i386/isa/wd.c
View File

@ -35,11 +35,11 @@
* SUCH DAMAGE.
*
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
* $Id: wd.c,v 1.45 1994/02/26 00:08:01 mycroft Exp $
* $Id: wd.c,v 1.46 1994/02/26 17:10:12 mycroft Exp $
*/
#define QUIETWORKS /* define this to make wdopen() set DKFL_QUIET */
#define INSTRUMENT /* instrumentation stuff by Brad Parker */
#define INSTRUMENT /* instrumentation stuff by Brad Parker */
/* TODO: peel out buffer at low ipl, speed improvement */
/* TODO: find and fix the timing bugs apparent on some controllers */
@ -163,7 +163,7 @@ static void bad144intern(struct disk *);
static int wdreset(int, int, int);
static int wdtimeout(caddr_t);
int wdc_wait(int, int, int, int);
#define wait_for_drq(p, u) wdc_wait((p)+wd_altsts, u, 0, WDCS_DRQ)
#define wait_for_drq(p, u) wdc_wait((p)+wd_status, u, 0, WDCS_DRQ)
#define wait_for_ready(p, u) wdc_wait((p)+wd_status, u, 0, WDCS_READY)
#define wait_for_unbusy(p, u) wdc_wait((p)+wd_status, u, WDCS_BUSY, 0)
@ -345,7 +345,6 @@ wdstrategy(register struct buf *bp)
done:
/* toss transfer, we're done early */
biodone(bp);
return 0;
}
/*
@ -643,6 +642,7 @@ wdintr(struct intrframe wdif)
/* is it not a transfer, but a control operation? */
if (du->dk_state < OPEN) {
wdtab[unit].b_active = 0;
if (wdcontrol(bp))
wdstart(ctrlr);
return;
@ -661,6 +661,7 @@ wdintr(struct intrframe wdif)
}
#ifdef B_FORMAT
if (bp->b_flags & B_FORMAT) {
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
goto done;
}
@ -687,7 +688,6 @@ wdintr(struct intrframe wdif)
diskerr(bp, "wd", "soft ecc", 0, du->dk_skip,
&du->dk_dd);
}
outt:
/*
* If this was a successful read operation, fetch the data.
@ -700,6 +700,7 @@ outt:
/* ready to receive data? */
if (wait_for_drq(wdc, ctrlr) == -1) {
/* XXXX abort here? */
wdstart(ctrlr);
printf("wdc%d: timeout in wdintr WDCS_DRQ\n", ctrlr);
}
@ -716,6 +717,7 @@ outt:
}
wdxfer[du->dk_lunit]++;
outt:
if (wdtab[ctrlr].b_active) {
#ifdef INSTRUMENT
if (du->dk_unit >= 0)
@ -729,6 +731,7 @@ outt:
diskerr(bp, "wd", "soft error", 0, du->dk_skip,
&du->dk_dd);
wdtab[ctrlr].b_errcnt = 0;
wdtab[ctrlr].b_active = 0;
/* see if more to transfer */
if (du->dk_bc > 0 && (du->dk_flags & DKFL_ERROR) == 0) {
@ -759,11 +762,13 @@ done:
}
dp->b_actf = bp->b_actf;
dp->b_errcnt = 0;
bp->b_resid = 0;
bp->b_resid = bp->b_bcount - du->dk_skip * DEV_BSIZE;
bp->b_flags &= ~B_XXX;
biodone(bp);
}
wdtab[ctrlr].b_active = 0;
/* anything more on drive queue? */
if (dp->b_actf && du->dk_bct == 0)
wdustart(du);
@ -771,9 +776,6 @@ done:
/* anything more for controller to do? */
if (wdtab[ctrlr].b_actf)
wdstart(ctrlr);
if (!wdtab[ctrlr].b_actf)
wdtab[ctrlr].b_active = 0;
}
/*
@ -786,15 +788,12 @@ wdopen(dev_t dev, int flags, int fmt, struct proc *p)
register struct disk *du;
int part = wdpart(dev), mask = 1 << part;
struct partition *pp;
int error = 0;
char *msg;
lunit = wdunit(dev);
if (lunit >= NWD)
return ENXIO;
du = wddrives[lunit];
if (du == 0)
return ENXIO;
@ -838,9 +837,8 @@ wdopen(dev_t dev, int flags, int fmt, struct proc *p)
log(LOG_WARNING,
"wd%d: cannot find label (%s)\n",
lunit, msg);
error = EINVAL; /* XXX needs translation */
return EINVAL; /* XXX needs translation */
}
goto done;
} else {
wdsetctlr(dev, du);
du->dk_flags |= DKFL_BSDLABEL;
@ -848,10 +846,6 @@ wdopen(dev_t dev, int flags, int fmt, struct proc *p)
if (du->dk_dd.d_flags & D_BADSECT)
du->dk_flags |= DKFL_BADSECT;
}
done:
if (error)
return error;
}
if (du->dk_flags & DKFL_BADSECT)
@ -862,8 +856,8 @@ done:
* that overlaps another partition which is open
* unless one is the "raw" partition (whole disk).
*/
if ((du->dk_openpart & mask) == 0 /*&& part != RAWPART*/ && part != WDRAW) {
int start, end;
if ((du->dk_openpart & mask) == 0 && part != WDRAW) {
int start, end;
pp = &du->dk_dd.d_partitions[part];
start = pp->p_offset;
@ -874,8 +868,6 @@ done:
if (pp->p_offset + pp->p_size <= start ||
pp->p_offset >= end)
continue;
/*if (pp - du->dk_dd.d_partitions == RAWPART)
continue; */
if (pp - du->dk_dd.d_partitions == WDRAW)
continue;
if (du->dk_openpart & (1 << (pp - du->dk_dd.d_partitions)))
@ -885,7 +877,6 @@ done:
pp - du->dk_dd.d_partitions + 'a');
}
}
if (part >= du->dk_dd.d_npartitions && part != WDRAW)
return ENXIO;
@ -924,8 +915,8 @@ wdcontrol(register struct buf *bp)
wdc = du->dk_port;
switch (du->dk_state) {
tryagainrecal:
case WANTOPEN: /* set SDH, step rate, do restore */
tryagainrecal:
#ifdef WDDEBUG
printf("wd%d: recal ", lunit);
#endif
@ -1028,17 +1019,16 @@ wdsetctlr(dev_t dev, struct disk *du)
wdc = du->dk_port;
/*DELAY(2000);*/
x = splbio();
outb(wdc+wd_cyl_lo, du->dk_dd.d_ncylinders); /* TIH: was ...ders+1 */
outb(wdc+wd_cyl_hi, du->dk_dd.d_ncylinders>>8); /* TIH: was ...ders+1 */
outb(wdc+wd_sdh, WDSD_IBM | (du->dk_unit << 4) + du->dk_dd.d_ntracks-1);
outb(wdc+wd_sdh,
WDSD_IBM | (du->dk_unit << 4) + du->dk_dd.d_ntracks - 1);
outb(wdc+wd_seccnt, du->dk_dd.d_nsectors);
stat = wdcommand(du, WDCC_IDC);
if (stat & WDCS_ERR)
printf("wdsetctlr: status %b error %b\n", stat, WDCS_BITS,
printf("wdsetctlr: stat %b error %b\n", stat, WDCS_BITS,
inb(wdc+wd_error), WDERR_BITS);
splx(x);
return stat;
@ -1293,8 +1283,8 @@ wdsize(dev_t dev)
if (lunit >= NWD)
return -1;
if ((du = wddrives[lunit]) == 0)
du = wddrives[lunit];
if (du == 0)
return -1;
if (du->dk_state < OPEN || (du->dk_flags & DKFL_BSDLABEL) == 0) {
@ -1307,8 +1297,8 @@ wdsize(dev_t dev)
if ((du->dk_flags & (DKFL_WRITEPROT | DKFL_BSDLABEL)) != DKFL_BSDLABEL)
return -1;
else
return (int)du->dk_dd.d_partitions[part].p_size;
return (int)du->dk_dd.d_partitions[part].p_size;
}
extern char *vmmap; /* poor name! */
@ -1318,13 +1308,13 @@ int
wddump(dev_t dev)
{
register struct disk *du; /* disk unit to do the IO */
long num; /* number of sectors to write */
int ctrlr, lunit, part, wdc;
long blkoff, blknum;
long cylin, head, sector, stat;
long secpertrk, secpercyl, nblocks, i;
long num; /* number of sectors to write */
int ctrlr, lunit, part, wdc;
long blkoff, blknum;
long cylin, head, sector, stat;
long secpertrk, secpercyl, nblocks, i;
char *addr;
static wddoingadump = 0;
static wddoingadump = 0;
extern caddr_t CADDR1;
extern struct pte *CMAP1;
@ -1342,15 +1332,11 @@ wddump(dev_t dev)
/* check for acceptable drive number */
if (lunit >= NWD)
return ENXIO;
du = wddrives[lunit];
if (du == 0)
return ENXIO;
/* was it ever initialized ? */
if (du->dk_state < OPEN)
return ENXIO;
if (du->dk_flags & DKFL_WRITEPROT)
if (du == 0 || du->dk_state < OPEN || du->dk_flags & DKFL_WRITEPROT)
return ENXIO;
wdc = du->dk_port;
ctrlr = du->dk_ctrlr;
@ -1359,7 +1345,7 @@ wddump(dev_t dev)
/* check if controller active */
/*if (wdtab[ctrlr].b_active)
return EFAULT; */
return EFAULT;*/
if (wddoingadump)
return EFAULT;
@ -1371,11 +1357,11 @@ wddump(dev_t dev)
/*pg("xunit %x, nblocks %d, dumplo %d num %d\n", part, nblocks, dumplo,
num);*/
/* check transfer bounds against partition size */
if ((dumplo < 0) || ((dumplo + num) > nblocks))
if (dumplo < 0 || dumplo + num > nblocks)
return EINVAL;
/* mark controller active for if we panic during the dump */
/* wdtab[ctrlr].b_active = 1; */
/*wdtab[ctrlr].b_active = 1;*/
wddoingadump = 1;
i = 200000000;
while ((inb(wdc+wd_status) & WDCS_BUSY) && (i-- > 0))
@ -1390,13 +1376,6 @@ wddump(dev_t dev)
blknum = dumplo + blkoff;
while (num > 0) {
#ifdef notdef /* cannot use this since this address was mapped differently */
pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), VM_PROT_READ, TRUE);
#else
*(int *)CMAP1 = PG_V | PG_KW | ctob((long)addr);
tlbflush();
#endif
/* compute disk address */
cylin = blknum / secpercyl;
head = (blknum % secpercyl) / secpertrk;
@ -1427,7 +1406,7 @@ wddump(dev_t dev)
outb(wdc+wd_sdh, WDSD_IBM | (du->dk_unit << 4) | (head & 0xf));
while ((inb(wdc+wd_status) & WDCS_READY) == 0)
;
/* transfer some blocks */
outb(wdc+wd_sector, sector);
outb(wdc+wd_seccnt, 1);
@ -1441,13 +1420,21 @@ wddump(dev_t dev)
#endif
outb(wdc+wd_command, WDCC_WRITE);
#ifdef notdef /* cannot use this since this address was mapped differently */
pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), VM_PROT_READ, TRUE);
#else
*(int *)CMAP1 = PG_V | PG_KW | ctob((long)addr);
tlbflush();
#endif
/* Ready to send data? */
while ((inb(wdc+wd_status) & WDCS_DRQ) == 0)
;
if (inb(wdc+wd_status) & WDCS_ERR)
return EIO;
outsw(wdc+wd_data, CADDR1 + ((int)addr&PGOFSET), 256);
outsw(wdc+wd_data, CADDR1 + ((int)addr & PGOFSET),
DEV_BSIZE / 2);
if (inb(wdc+wd_status) & WDCS_ERR)
return EIO;
@ -1465,13 +1452,13 @@ wddump(dev_t dev)
if (inb(wdc+wd_status) & WDCS_ERR)
return EIO;
if ((unsigned)addr % (1024*1024) == 0)
printf("%d ", num/2048);
if ((unsigned)addr % 1048576 == 0)
printf("%d ", num / (1048576 / DEV_BSIZE));
/* update block count */
num--;
blknum++;
(int)addr += 512;
(int)addr += DEV_BSIZE;
#if DO_NOT_KNOW_HOW
/* operator aborting dump? non-blocking getc() */

105
sys/dev/ata/wd.c
View File

@ -35,11 +35,11 @@
* SUCH DAMAGE.
*
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
* $Id: wd.c,v 1.45 1994/02/26 00:08:01 mycroft Exp $
* $Id: wd.c,v 1.46 1994/02/26 17:10:12 mycroft Exp $
*/
#define QUIETWORKS /* define this to make wdopen() set DKFL_QUIET */
#define INSTRUMENT /* instrumentation stuff by Brad Parker */
#define INSTRUMENT /* instrumentation stuff by Brad Parker */
/* TODO: peel out buffer at low ipl, speed improvement */
/* TODO: find and fix the timing bugs apparent on some controllers */
@ -163,7 +163,7 @@ static void bad144intern(struct disk *);
static int wdreset(int, int, int);
static int wdtimeout(caddr_t);
int wdc_wait(int, int, int, int);
#define wait_for_drq(p, u) wdc_wait((p)+wd_altsts, u, 0, WDCS_DRQ)
#define wait_for_drq(p, u) wdc_wait((p)+wd_status, u, 0, WDCS_DRQ)
#define wait_for_ready(p, u) wdc_wait((p)+wd_status, u, 0, WDCS_READY)
#define wait_for_unbusy(p, u) wdc_wait((p)+wd_status, u, WDCS_BUSY, 0)
@ -345,7 +345,6 @@ wdstrategy(register struct buf *bp)
done:
/* toss transfer, we're done early */
biodone(bp);
return 0;
}
/*
@ -643,6 +642,7 @@ wdintr(struct intrframe wdif)
/* is it not a transfer, but a control operation? */
if (du->dk_state < OPEN) {
wdtab[unit].b_active = 0;
if (wdcontrol(bp))
wdstart(ctrlr);
return;
@ -661,6 +661,7 @@ wdintr(struct intrframe wdif)
}
#ifdef B_FORMAT
if (bp->b_flags & B_FORMAT) {
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
goto done;
}
@ -687,7 +688,6 @@ wdintr(struct intrframe wdif)
diskerr(bp, "wd", "soft ecc", 0, du->dk_skip,
&du->dk_dd);
}
outt:
/*
* If this was a successful read operation, fetch the data.
@ -700,6 +700,7 @@ outt:
/* ready to receive data? */
if (wait_for_drq(wdc, ctrlr) == -1) {
/* XXXX abort here? */
wdstart(ctrlr);
printf("wdc%d: timeout in wdintr WDCS_DRQ\n", ctrlr);
}
@ -716,6 +717,7 @@ outt:
}
wdxfer[du->dk_lunit]++;
outt:
if (wdtab[ctrlr].b_active) {
#ifdef INSTRUMENT
if (du->dk_unit >= 0)
@ -729,6 +731,7 @@ outt:
diskerr(bp, "wd", "soft error", 0, du->dk_skip,
&du->dk_dd);
wdtab[ctrlr].b_errcnt = 0;
wdtab[ctrlr].b_active = 0;
/* see if more to transfer */
if (du->dk_bc > 0 && (du->dk_flags & DKFL_ERROR) == 0) {
@ -759,11 +762,13 @@ done:
}
dp->b_actf = bp->b_actf;
dp->b_errcnt = 0;
bp->b_resid = 0;
bp->b_resid = bp->b_bcount - du->dk_skip * DEV_BSIZE;
bp->b_flags &= ~B_XXX;
biodone(bp);
}
wdtab[ctrlr].b_active = 0;
/* anything more on drive queue? */
if (dp->b_actf && du->dk_bct == 0)
wdustart(du);
@ -771,9 +776,6 @@ done:
/* anything more for controller to do? */
if (wdtab[ctrlr].b_actf)
wdstart(ctrlr);
if (!wdtab[ctrlr].b_actf)
wdtab[ctrlr].b_active = 0;
}
/*
@ -786,15 +788,12 @@ wdopen(dev_t dev, int flags, int fmt, struct proc *p)
register struct disk *du;
int part = wdpart(dev), mask = 1 << part;
struct partition *pp;
int error = 0;
char *msg;
lunit = wdunit(dev);
if (lunit >= NWD)
return ENXIO;
du = wddrives[lunit];
if (du == 0)
return ENXIO;
@ -838,9 +837,8 @@ wdopen(dev_t dev, int flags, int fmt, struct proc *p)
log(LOG_WARNING,
"wd%d: cannot find label (%s)\n",
lunit, msg);
error = EINVAL; /* XXX needs translation */
return EINVAL; /* XXX needs translation */
}
goto done;
} else {
wdsetctlr(dev, du);
du->dk_flags |= DKFL_BSDLABEL;
@ -848,10 +846,6 @@ wdopen(dev_t dev, int flags, int fmt, struct proc *p)
if (du->dk_dd.d_flags & D_BADSECT)
du->dk_flags |= DKFL_BADSECT;
}
done:
if (error)
return error;
}
if (du->dk_flags & DKFL_BADSECT)
@ -862,8 +856,8 @@ done:
* that overlaps another partition which is open
* unless one is the "raw" partition (whole disk).
*/
if ((du->dk_openpart & mask) == 0 /*&& part != RAWPART*/ && part != WDRAW) {
int start, end;
if ((du->dk_openpart & mask) == 0 && part != WDRAW) {
int start, end;
pp = &du->dk_dd.d_partitions[part];
start = pp->p_offset;
@ -874,8 +868,6 @@ done:
if (pp->p_offset + pp->p_size <= start ||
pp->p_offset >= end)
continue;
/*if (pp - du->dk_dd.d_partitions == RAWPART)
continue; */
if (pp - du->dk_dd.d_partitions == WDRAW)
continue;
if (du->dk_openpart & (1 << (pp - du->dk_dd.d_partitions)))
@ -885,7 +877,6 @@ done:
pp - du->dk_dd.d_partitions + 'a');
}
}
if (part >= du->dk_dd.d_npartitions && part != WDRAW)
return ENXIO;
@ -924,8 +915,8 @@ wdcontrol(register struct buf *bp)
wdc = du->dk_port;
switch (du->dk_state) {
tryagainrecal:
case WANTOPEN: /* set SDH, step rate, do restore */
tryagainrecal:
#ifdef WDDEBUG
printf("wd%d: recal ", lunit);
#endif
@ -1028,17 +1019,16 @@ wdsetctlr(dev_t dev, struct disk *du)
wdc = du->dk_port;
/*DELAY(2000);*/
x = splbio();
outb(wdc+wd_cyl_lo, du->dk_dd.d_ncylinders); /* TIH: was ...ders+1 */
outb(wdc+wd_cyl_hi, du->dk_dd.d_ncylinders>>8); /* TIH: was ...ders+1 */
outb(wdc+wd_sdh, WDSD_IBM | (du->dk_unit << 4) + du->dk_dd.d_ntracks-1);
outb(wdc+wd_sdh,
WDSD_IBM | (du->dk_unit << 4) + du->dk_dd.d_ntracks - 1);
outb(wdc+wd_seccnt, du->dk_dd.d_nsectors);
stat = wdcommand(du, WDCC_IDC);
if (stat & WDCS_ERR)
printf("wdsetctlr: status %b error %b\n", stat, WDCS_BITS,
printf("wdsetctlr: stat %b error %b\n", stat, WDCS_BITS,
inb(wdc+wd_error), WDERR_BITS);
splx(x);
return stat;
@ -1293,8 +1283,8 @@ wdsize(dev_t dev)
if (lunit >= NWD)
return -1;
if ((du = wddrives[lunit]) == 0)
du = wddrives[lunit];
if (du == 0)
return -1;
if (du->dk_state < OPEN || (du->dk_flags & DKFL_BSDLABEL) == 0) {
@ -1307,8 +1297,8 @@ wdsize(dev_t dev)
if ((du->dk_flags & (DKFL_WRITEPROT | DKFL_BSDLABEL)) != DKFL_BSDLABEL)
return -1;
else
return (int)du->dk_dd.d_partitions[part].p_size;
return (int)du->dk_dd.d_partitions[part].p_size;
}
extern char *vmmap; /* poor name! */
@ -1318,13 +1308,13 @@ int
wddump(dev_t dev)
{
register struct disk *du; /* disk unit to do the IO */
long num; /* number of sectors to write */
int ctrlr, lunit, part, wdc;
long blkoff, blknum;
long cylin, head, sector, stat;
long secpertrk, secpercyl, nblocks, i;
long num; /* number of sectors to write */
int ctrlr, lunit, part, wdc;
long blkoff, blknum;
long cylin, head, sector, stat;
long secpertrk, secpercyl, nblocks, i;
char *addr;
static wddoingadump = 0;
static wddoingadump = 0;
extern caddr_t CADDR1;
extern struct pte *CMAP1;
@ -1342,15 +1332,11 @@ wddump(dev_t dev)
/* check for acceptable drive number */
if (lunit >= NWD)
return ENXIO;
du = wddrives[lunit];
if (du == 0)
return ENXIO;
/* was it ever initialized ? */
if (du->dk_state < OPEN)
return ENXIO;
if (du->dk_flags & DKFL_WRITEPROT)
if (du == 0 || du->dk_state < OPEN || du->dk_flags & DKFL_WRITEPROT)
return ENXIO;
wdc = du->dk_port;
ctrlr = du->dk_ctrlr;
@ -1359,7 +1345,7 @@ wddump(dev_t dev)
/* check if controller active */
/*if (wdtab[ctrlr].b_active)
return EFAULT; */
return EFAULT;*/
if (wddoingadump)
return EFAULT;
@ -1371,11 +1357,11 @@ wddump(dev_t dev)
/*pg("xunit %x, nblocks %d, dumplo %d num %d\n", part, nblocks, dumplo,
num);*/
/* check transfer bounds against partition size */
if ((dumplo < 0) || ((dumplo + num) > nblocks))
if (dumplo < 0 || dumplo + num > nblocks)
return EINVAL;
/* mark controller active for if we panic during the dump */
/* wdtab[ctrlr].b_active = 1; */
/*wdtab[ctrlr].b_active = 1;*/
wddoingadump = 1;
i = 200000000;
while ((inb(wdc+wd_status) & WDCS_BUSY) && (i-- > 0))
@ -1390,13 +1376,6 @@ wddump(dev_t dev)
blknum = dumplo + blkoff;
while (num > 0) {
#ifdef notdef /* cannot use this since this address was mapped differently */
pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), VM_PROT_READ, TRUE);
#else
*(int *)CMAP1 = PG_V | PG_KW | ctob((long)addr);
tlbflush();
#endif
/* compute disk address */
cylin = blknum / secpercyl;
head = (blknum % secpercyl) / secpertrk;
@ -1427,7 +1406,7 @@ wddump(dev_t dev)
outb(wdc+wd_sdh, WDSD_IBM | (du->dk_unit << 4) | (head & 0xf));
while ((inb(wdc+wd_status) & WDCS_READY) == 0)
;
/* transfer some blocks */
outb(wdc+wd_sector, sector);
outb(wdc+wd_seccnt, 1);
@ -1441,13 +1420,21 @@ wddump(dev_t dev)
#endif
outb(wdc+wd_command, WDCC_WRITE);
#ifdef notdef /* cannot use this since this address was mapped differently */
pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), VM_PROT_READ, TRUE);
#else
*(int *)CMAP1 = PG_V | PG_KW | ctob((long)addr);
tlbflush();
#endif
/* Ready to send data? */
while ((inb(wdc+wd_status) & WDCS_DRQ) == 0)
;
if (inb(wdc+wd_status) & WDCS_ERR)
return EIO;
outsw(wdc+wd_data, CADDR1 + ((int)addr&PGOFSET), 256);
outsw(wdc+wd_data, CADDR1 + ((int)addr & PGOFSET),
DEV_BSIZE / 2);
if (inb(wdc+wd_status) & WDCS_ERR)
return EIO;
@ -1465,13 +1452,13 @@ wddump(dev_t dev)
if (inb(wdc+wd_status) & WDCS_ERR)
return EIO;
if ((unsigned)addr % (1024*1024) == 0)
printf("%d ", num/2048);
if ((unsigned)addr % 1048576 == 0)
printf("%d ", num / (1048576 / DEV_BSIZE));
/* update block count */
num--;
blknum++;
(int)addr += 512;
(int)addr += DEV_BSIZE;
#if DO_NOT_KNOW_HOW
/* operator aborting dump? non-blocking getc() */

105
sys/dev/isa/wd.c
View File

@ -35,11 +35,11 @@
* SUCH DAMAGE.
*
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
* $Id: wd.c,v 1.45 1994/02/26 00:08:01 mycroft Exp $
* $Id: wd.c,v 1.46 1994/02/26 17:10:12 mycroft Exp $
*/
#define QUIETWORKS /* define this to make wdopen() set DKFL_QUIET */
#define INSTRUMENT /* instrumentation stuff by Brad Parker */
#define INSTRUMENT /* instrumentation stuff by Brad Parker */
/* TODO: peel out buffer at low ipl, speed improvement */
/* TODO: find and fix the timing bugs apparent on some controllers */
@ -163,7 +163,7 @@ static void bad144intern(struct disk *);
static int wdreset(int, int, int);
static int wdtimeout(caddr_t);
int wdc_wait(int, int, int, int);
#define wait_for_drq(p, u) wdc_wait((p)+wd_altsts, u, 0, WDCS_DRQ)
#define wait_for_drq(p, u) wdc_wait((p)+wd_status, u, 0, WDCS_DRQ)
#define wait_for_ready(p, u) wdc_wait((p)+wd_status, u, 0, WDCS_READY)
#define wait_for_unbusy(p, u) wdc_wait((p)+wd_status, u, WDCS_BUSY, 0)
@ -345,7 +345,6 @@ wdstrategy(register struct buf *bp)
done:
/* toss transfer, we're done early */
biodone(bp);
return 0;
}
/*
@ -643,6 +642,7 @@ wdintr(struct intrframe wdif)
/* is it not a transfer, but a control operation? */
if (du->dk_state < OPEN) {
wdtab[unit].b_active = 0;
if (wdcontrol(bp))
wdstart(ctrlr);
return;
@ -661,6 +661,7 @@ wdintr(struct intrframe wdif)
}
#ifdef B_FORMAT
if (bp->b_flags & B_FORMAT) {
bp->b_error = EIO;
bp->b_flags |= B_ERROR;
goto done;
}
@ -687,7 +688,6 @@ wdintr(struct intrframe wdif)
diskerr(bp, "wd", "soft ecc", 0, du->dk_skip,
&du->dk_dd);
}
outt:
/*
* If this was a successful read operation, fetch the data.
@ -700,6 +700,7 @@ outt:
/* ready to receive data? */
if (wait_for_drq(wdc, ctrlr) == -1) {
/* XXXX abort here? */
wdstart(ctrlr);
printf("wdc%d: timeout in wdintr WDCS_DRQ\n", ctrlr);
}
@ -716,6 +717,7 @@ outt:
}
wdxfer[du->dk_lunit]++;
outt:
if (wdtab[ctrlr].b_active) {
#ifdef INSTRUMENT
if (du->dk_unit >= 0)
@ -729,6 +731,7 @@ outt:
diskerr(bp, "wd", "soft error", 0, du->dk_skip,
&du->dk_dd);
wdtab[ctrlr].b_errcnt = 0;
wdtab[ctrlr].b_active = 0;
/* see if more to transfer */
if (du->dk_bc > 0 && (du->dk_flags & DKFL_ERROR) == 0) {
@ -759,11 +762,13 @@ done:
}
dp->b_actf = bp->b_actf;
dp->b_errcnt = 0;
bp->b_resid = 0;
bp->b_resid = bp->b_bcount - du->dk_skip * DEV_BSIZE;
bp->b_flags &= ~B_XXX;
biodone(bp);
}
wdtab[ctrlr].b_active = 0;
/* anything more on drive queue? */
if (dp->b_actf && du->dk_bct == 0)
wdustart(du);
@ -771,9 +776,6 @@ done:
/* anything more for controller to do? */
if (wdtab[ctrlr].b_actf)
wdstart(ctrlr);
if (!wdtab[ctrlr].b_actf)
wdtab[ctrlr].b_active = 0;
}
/*
@ -786,15 +788,12 @@ wdopen(dev_t dev, int flags, int fmt, struct proc *p)
register struct disk *du;
int part = wdpart(dev), mask = 1 << part;
struct partition *pp;
int error = 0;
char *msg;
lunit = wdunit(dev);
if (lunit >= NWD)
return ENXIO;
du = wddrives[lunit];
if (du == 0)
return ENXIO;
@ -838,9 +837,8 @@ wdopen(dev_t dev, int flags, int fmt, struct proc *p)
log(LOG_WARNING,
"wd%d: cannot find label (%s)\n",
lunit, msg);
error = EINVAL; /* XXX needs translation */
return EINVAL; /* XXX needs translation */
}
goto done;
} else {
wdsetctlr(dev, du);
du->dk_flags |= DKFL_BSDLABEL;
@ -848,10 +846,6 @@ wdopen(dev_t dev, int flags, int fmt, struct proc *p)
if (du->dk_dd.d_flags & D_BADSECT)
du->dk_flags |= DKFL_BADSECT;
}
done:
if (error)
return error;
}
if (du->dk_flags & DKFL_BADSECT)
@ -862,8 +856,8 @@ done:
* that overlaps another partition which is open
* unless one is the "raw" partition (whole disk).
*/
if ((du->dk_openpart & mask) == 0 /*&& part != RAWPART*/ && part != WDRAW) {
int start, end;
if ((du->dk_openpart & mask) == 0 && part != WDRAW) {
int start, end;
pp = &du->dk_dd.d_partitions[part];
start = pp->p_offset;
@ -874,8 +868,6 @@ done:
if (pp->p_offset + pp->p_size <= start ||
pp->p_offset >= end)
continue;
/*if (pp - du->dk_dd.d_partitions == RAWPART)
continue; */
if (pp - du->dk_dd.d_partitions == WDRAW)
continue;
if (du->dk_openpart & (1 << (pp - du->dk_dd.d_partitions)))
@ -885,7 +877,6 @@ done:
pp - du->dk_dd.d_partitions + 'a');
}
}
if (part >= du->dk_dd.d_npartitions && part != WDRAW)
return ENXIO;
@ -924,8 +915,8 @@ wdcontrol(register struct buf *bp)
wdc = du->dk_port;
switch (du->dk_state) {
tryagainrecal:
case WANTOPEN: /* set SDH, step rate, do restore */
tryagainrecal:
#ifdef WDDEBUG
printf("wd%d: recal ", lunit);
#endif
@ -1028,17 +1019,16 @@ wdsetctlr(dev_t dev, struct disk *du)
wdc = du->dk_port;
/*DELAY(2000);*/
x = splbio();
outb(wdc+wd_cyl_lo, du->dk_dd.d_ncylinders); /* TIH: was ...ders+1 */
outb(wdc+wd_cyl_hi, du->dk_dd.d_ncylinders>>8); /* TIH: was ...ders+1 */
outb(wdc+wd_sdh, WDSD_IBM | (du->dk_unit << 4) + du->dk_dd.d_ntracks-1);
outb(wdc+wd_sdh,
WDSD_IBM | (du->dk_unit << 4) + du->dk_dd.d_ntracks - 1);
outb(wdc+wd_seccnt, du->dk_dd.d_nsectors);
stat = wdcommand(du, WDCC_IDC);
if (stat & WDCS_ERR)
printf("wdsetctlr: status %b error %b\n", stat, WDCS_BITS,
printf("wdsetctlr: stat %b error %b\n", stat, WDCS_BITS,
inb(wdc+wd_error), WDERR_BITS);
splx(x);
return stat;
@ -1293,8 +1283,8 @@ wdsize(dev_t dev)
if (lunit >= NWD)
return -1;
if ((du = wddrives[lunit]) == 0)
du = wddrives[lunit];
if (du == 0)
return -1;
if (du->dk_state < OPEN || (du->dk_flags & DKFL_BSDLABEL) == 0) {
@ -1307,8 +1297,8 @@ wdsize(dev_t dev)
if ((du->dk_flags & (DKFL_WRITEPROT | DKFL_BSDLABEL)) != DKFL_BSDLABEL)
return -1;
else
return (int)du->dk_dd.d_partitions[part].p_size;
return (int)du->dk_dd.d_partitions[part].p_size;
}
extern char *vmmap; /* poor name! */
@ -1318,13 +1308,13 @@ int
wddump(dev_t dev)
{
register struct disk *du; /* disk unit to do the IO */
long num; /* number of sectors to write */
int ctrlr, lunit, part, wdc;
long blkoff, blknum;
long cylin, head, sector, stat;
long secpertrk, secpercyl, nblocks, i;
long num; /* number of sectors to write */
int ctrlr, lunit, part, wdc;
long blkoff, blknum;
long cylin, head, sector, stat;
long secpertrk, secpercyl, nblocks, i;
char *addr;
static wddoingadump = 0;
static wddoingadump = 0;
extern caddr_t CADDR1;
extern struct pte *CMAP1;
@ -1342,15 +1332,11 @@ wddump(dev_t dev)
/* check for acceptable drive number */
if (lunit >= NWD)
return ENXIO;
du = wddrives[lunit];
if (du == 0)
return ENXIO;
/* was it ever initialized ? */
if (du->dk_state < OPEN)
return ENXIO;
if (du->dk_flags & DKFL_WRITEPROT)
if (du == 0 || du->dk_state < OPEN || du->dk_flags & DKFL_WRITEPROT)
return ENXIO;
wdc = du->dk_port;
ctrlr = du->dk_ctrlr;
@ -1359,7 +1345,7 @@ wddump(dev_t dev)
/* check if controller active */
/*if (wdtab[ctrlr].b_active)
return EFAULT; */
return EFAULT;*/
if (wddoingadump)
return EFAULT;
@ -1371,11 +1357,11 @@ wddump(dev_t dev)
/*pg("xunit %x, nblocks %d, dumplo %d num %d\n", part, nblocks, dumplo,
num);*/
/* check transfer bounds against partition size */
if ((dumplo < 0) || ((dumplo + num) > nblocks))
if (dumplo < 0 || dumplo + num > nblocks)
return EINVAL;
/* mark controller active for if we panic during the dump */
/* wdtab[ctrlr].b_active = 1; */
/*wdtab[ctrlr].b_active = 1;*/
wddoingadump = 1;
i = 200000000;
while ((inb(wdc+wd_status) & WDCS_BUSY) && (i-- > 0))
@ -1390,13 +1376,6 @@ wddump(dev_t dev)
blknum = dumplo + blkoff;
while (num > 0) {
#ifdef notdef /* cannot use this since this address was mapped differently */
pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), VM_PROT_READ, TRUE);
#else
*(int *)CMAP1 = PG_V | PG_KW | ctob((long)addr);
tlbflush();
#endif
/* compute disk address */
cylin = blknum / secpercyl;
head = (blknum % secpercyl) / secpertrk;
@ -1427,7 +1406,7 @@ wddump(dev_t dev)
outb(wdc+wd_sdh, WDSD_IBM | (du->dk_unit << 4) | (head & 0xf));
while ((inb(wdc+wd_status) & WDCS_READY) == 0)
;
/* transfer some blocks */
outb(wdc+wd_sector, sector);
outb(wdc+wd_seccnt, 1);
@ -1441,13 +1420,21 @@ wddump(dev_t dev)
#endif
outb(wdc+wd_command, WDCC_WRITE);
#ifdef notdef /* cannot use this since this address was mapped differently */
pmap_enter(kernel_pmap, CADDR1, trunc_page(addr), VM_PROT_READ, TRUE);
#else
*(int *)CMAP1 = PG_V | PG_KW | ctob((long)addr);
tlbflush();
#endif
/* Ready to send data? */
while ((inb(wdc+wd_status) & WDCS_DRQ) == 0)
;
if (inb(wdc+wd_status) & WDCS_ERR)
return EIO;
outsw(wdc+wd_data, CADDR1 + ((int)addr&PGOFSET), 256);
outsw(wdc+wd_data, CADDR1 + ((int)addr & PGOFSET),
DEV_BSIZE / 2);
if (inb(wdc+wd_status) & WDCS_ERR)
return EIO;
@ -1465,13 +1452,13 @@ wddump(dev_t dev)
if (inb(wdc+wd_status) & WDCS_ERR)
return EIO;
if ((unsigned)addr % (1024*1024) == 0)
printf("%d ", num/2048);
if ((unsigned)addr % 1048576 == 0)
printf("%d ", num / (1048576 / DEV_BSIZE));
/* update block count */
num--;
blknum++;
(int)addr += 512;
(int)addr += DEV_BSIZE;
#if DO_NOT_KNOW_HOW
/* operator aborting dump? non-blocking getc() */