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Code Issues Releases Activity

Set SCSI_NOSLEEP only when we really need to. This requires an additional

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flags parameter to all xxstart routines so that the correct information can
be passed down into the device specific routines.  This is needed to ensure
that ccb/scb allocation routines don't hang.

Submitted by: John Dyson
This commit is contained in:
Justin T. Gibbs 1995-04-23 22:07:56 +00:00
parent c6baec432a
commit a34bad999b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=8033
7 changed files with 37 additions and 37 deletions
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11
sys/scsi/cd.c
View File

@ -14,7 +14,7 @@
*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*
* $Id: cd.c,v 1.37 1995/03/21 11:21:00 dufault Exp $
* $Id: cd.c,v 1.38 1995/04/14 15:10:24 dufault Exp $
*/
#define SPLCD splbio
@ -66,7 +66,7 @@ int32 cdstrats, cdqueues;
#define PARTITION(z) (minor(z) & 0x07)
#define RAW_PART 2
void cdstart(u_int32 unit);
void cdstart(u_int32 unit, u_int32 flags);
struct scsi_data {
u_int32 flags;
@ -412,7 +412,7 @@ cd_strategy(struct buf *bp, struct scsi_link *sc_link)
* Tell the device to get going on the transfer if it's
* not doing anything, otherwise just wait for completion
*/
cdstart(unit);
cdstart(unit, 0);
splx(opri);
return;
@ -445,8 +445,9 @@ cd_strategy(struct buf *bp, struct scsi_link *sc_link)
* cdstart() is called at SPLCD from cdstrategy and scsi_done
*/
void
cdstart(unit)
cdstart(unit, flags)
u_int32 unit;
u_int32 flags;
{
register struct buf *bp = 0;
register struct buf *dp;
@ -518,7 +519,7 @@ cdstart(unit)
CDRETRIES,
30000,
bp,
SCSI_NOSLEEP | ((bp->b_flags & B_READ) ?
flags | ((bp->b_flags & B_READ) ?
SCSI_DATA_IN : SCSI_DATA_OUT))
!= SUCCESSFULLY_QUEUED) {
bad:

16
sys/scsi/pt.c
View File

@ -37,7 +37,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: pt.c,v 1.1 1995/03/04 20:50:46 dufault Exp $
* $Id: pt.c,v 1.2 1995/04/14 15:10:28 dufault Exp $
*/
/*
@ -57,7 +57,7 @@ struct scsi_data {
struct buf *buf_queue; /* the queue of pending IO operations */
};
void ptstart(u_int32 unit);
void ptstart(u_int32 unit, u_int32 flags);
void pt_strategy(struct buf *bp, struct scsi_link *sc_link);
int pt_sense(struct scsi_xfer *scsi_xfer);
@ -100,8 +100,9 @@ struct scsi_device pt_switch =
* ptstart() is called at splbio
*/
void
ptstart(unit)
ptstart(unit, flags)
u_int32 unit;
u_int32 flags;
{
struct scsi_link *sc_link = SCSI_LINK(&pt_switch, unit);
struct scsi_data *pt = sc_link->sd;
@ -116,7 +117,6 @@ ptstart(unit)
u_char control;
} cmd;
u_int32 flags;
SC_DEBUG(sc_link, SDEV_DB2, ("ptstart "));
/*
@ -142,10 +142,10 @@ ptstart(unit)
bzero(&cmd, sizeof(cmd));
if ((bp->b_flags & B_READ) == B_WRITE) {
cmd.op_code = PROCESSOR_SEND;
flags = SCSI_DATA_OUT;
flags |= SCSI_DATA_OUT;
} else {
cmd.op_code = PROCESSOR_RECEIVE;
flags = SCSI_DATA_IN;
flags |= SCSI_DATA_IN;
}
scsi_uto3b(bp->b_bcount, cmd.len);
@ -160,7 +160,7 @@ ptstart(unit)
0,
10000,
bp,
flags | SCSI_NOSLEEP) == SUCCESSFULLY_QUEUED) {
flags) == SUCCESSFULLY_QUEUED) {
} else {
printf("pt%ld: oops not queued\n", unit);
bp->b_flags |= B_ERROR;
@ -208,7 +208,7 @@ pt_strategy(struct buf *bp, struct scsi_link *sc_link)
* not doing anything, otherwise just wait for completion
* (All a bit silly if we're only allowing 1 open but..)
*/
ptstart(unit);
ptstart(unit, 0);
splx(opri);
return;

5
sys/scsi/scsi_base.c
View File

@ -8,7 +8,7 @@
* file.
*
* Written by Julian Elischer (julian@dialix.oz.au)
* $Id: scsi_base.c,v 1.25 1995/03/28 07:57:23 bde Exp $
* $Id: scsi_base.c,v 1.27 1995/04/14 15:10:31 dufault Exp $
*/
#define SPLSD splbio
@ -106,7 +106,7 @@ free_xs(xs, sc_link, flags)
} else {
if (sc_link->device->start) {
SC_DEBUG(sc_link, SDEV_DB2, ("calling private start()\n"));
(*(sc_link->device->start)) (sc_link->dev_unit);
(*(sc_link->device->start)) (sc_link->dev_unit, flags);
}
}
}
@ -470,7 +470,6 @@ scsi_scsi_cmd(sc_link, scsi_cmd, cmdlen, data_addr, datalen,
}
}
if (bp && !(flags & SCSI_USER)) flags |= SCSI_NOSLEEP;
SC_DEBUG(sc_link, SDEV_DB2, ("scsi_cmd\n"));
xs = get_xs(sc_link, flags);

4
sys/scsi/scsiconf.h
View File

@ -14,7 +14,7 @@
*
* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
*
* $Id: scsiconf.h,v 1.22 1995/04/14 15:10:39 dufault Exp $
* $Id: scsiconf.h,v 1.23 1995/04/23 07:47:12 bde Exp $
*/
#ifndef SCSI_SCSICONF_H
#define SCSI_SCSICONF_H 1
@ -164,7 +164,7 @@ struct scsi_device
{
/* 4*/ errval (*err_handler)(struct scsi_xfer *xs); /* return -1 to say
* err processing complete */
/* 8*/ void (*start)(u_int32 unit);
/* 8*/ void (*start)(u_int32 unit, u_int32 flags);
/* 12*/ int32 (*async)();
/* 16*/ int32 (*done)(); /* returns -1 to say done processing complete */
/* 20*/ char *name; /* name of device type */

10
sys/scsi/sd.c
View File

@ -14,7 +14,7 @@
*
* Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
*
* $Id: sd.c,v 1.57 1995/03/23 16:09:01 bde Exp $
* $Id: sd.c,v 1.59 1995/04/14 15:10:42 dufault Exp $
*/
#define SPLSD splbio
@ -61,7 +61,7 @@ errval sd_get_parms __P((int unit, int flags));
static void sdstrategy1 __P((struct buf *));
int sd_sense_handler __P((struct scsi_xfer *));
void sdstart __P((u_int32));
void sdstart __P((u_int32, u_int32));
struct scsi_data {
u_int32 flags;
@ -407,7 +407,7 @@ sd_strategy(struct buf *bp, struct scsi_link *sc_link)
* Tell the device to get going on the transfer if it's
* not doing anything, otherwise just wait for completion
*/
sdstart(unit);
sdstart(unit, 0);
splx(opri);
return /*0*/;
@ -450,7 +450,7 @@ sdstrategy1(struct buf *bp)
* sdstart() is called at SPLSD from sdstrategy and scsi_done
*/
void
sdstart(u_int32 unit)
sdstart(u_int32 unit, u_int32 flags)
{
register struct scsi_link *sc_link = SCSI_LINK(&sd_switch, unit);
register struct scsi_data *sd = sc_link->sd;
@ -525,7 +525,7 @@ sdstart(u_int32 unit)
SD_RETRIES,
10000,
bp,
SCSI_NOSLEEP | ((bp->b_flags & B_READ) ?
flags | ((bp->b_flags & B_READ) ?
SCSI_DATA_IN : SCSI_DATA_OUT))
== SUCCESSFULLY_QUEUED) {
sdqueues++;

14
sys/scsi/st.c
View File

@ -12,7 +12,7 @@
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* $Id: st.c,v 1.31 1995/03/21 11:21:08 dufault Exp $
* $Id: st.c,v 1.32 1995/04/14 15:10:44 dufault Exp $
*/
/*
@ -165,7 +165,7 @@ errval st_mode_select __P((u_int32 unit, u_int32 flags, \
errval st_comp __P((u_int32 unit, u_int32 mode));
void ststrategy();
int32 st_chkeod();
void ststart(u_int32 unit);
void ststart(u_int32 unit, u_int32 flags);
void st_unmount();
errval st_mount_tape();
void st_loadquirks();
@ -957,7 +957,7 @@ st_strategy(struct buf *bp, struct scsi_link *sc_link)
* not doing anything, otherwise just wait for completion
* (All a bit silly if we're only allowing 1 open but..)
*/
ststart(unit);
ststart(unit, 0);
splx(opri);
return;
@ -986,14 +986,14 @@ st_strategy(struct buf *bp, struct scsi_link *sc_link)
* ststart() is called at splbio
*/
void
ststart(unit)
ststart(unit, flags)
u_int32 unit;
u_int32 flags;
{
struct scsi_link *sc_link = SCSI_LINK(&st_switch, unit);
struct scsi_data *st = sc_link->sd;
register struct buf *bp = 0;
struct scsi_rw_tape cmd;
u_int32 flags;
SC_DEBUG(sc_link, SDEV_DB2, ("ststart "));
/*
@ -1072,10 +1072,10 @@ ststart(unit)
cmd.op_code = WRITE_COMMAND_TAPE;
st->flags &= ~ST_FM_WRITTEN;
st->flags |= ST_WRITTEN;
flags = SCSI_DATA_OUT;
flags |= SCSI_DATA_OUT;
} else {
cmd.op_code = READ_COMMAND_TAPE;
flags = SCSI_DATA_IN;
flags |= SCSI_DATA_IN;
}
/*
* Handle "fixed-block-mode" tape drives by using the

14
sys/scsi/worm.c
View File

@ -37,7 +37,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: worm.c,v 1.2 1995/03/15 14:22:12 dufault Exp $
* $Id: worm.c,v 1.3 1995/04/23 07:39:21 bde Exp $
*/
/* XXX This is PRELIMINARY.
@ -66,7 +66,7 @@ struct scsi_data {
u_int32 blk_size; /* Size of each blocks */
};
void wormstart(u_int32 unit);
void wormstart(u_int32 unit, u_int32 flags);
errval worm_open(dev_t dev, int flags, int fmt, struct proc *p,
struct scsi_link *sc_link);
@ -157,8 +157,9 @@ wormattach(struct scsi_link *sc_link)
* handled in one place.
*/
void
wormstart(unit)
wormstart(unit, flags)
u_int32 unit;
u_int32 flags;
{
struct scsi_link *sc_link = SCSI_LINK(&worm_switch, unit);
struct scsi_data *worm = sc_link->sd;
@ -177,7 +178,6 @@ wormstart(unit)
u_char ctl;
} cmd;
u_int32 flags;
u_int32 lba; /* Logical block address */
u_int32 tl; /* Transfer length */
@ -213,10 +213,10 @@ wormstart(unit)
bzero(&cmd, sizeof(cmd));
if ((bp->b_flags & B_READ) == B_WRITE) {
cmd.op_code = WRITE_BIG;
flags = SCSI_DATA_OUT;
flags |= SCSI_DATA_OUT;
} else {
cmd.op_code = READ_BIG;
flags = SCSI_DATA_IN;
flags |= SCSI_DATA_IN;
}
@ -292,7 +292,7 @@ worm_strategy(struct buf *bp, struct scsi_link *sc_link)
*dp = bp;
bp->b_actf = NULL;
wormstart(unit);
wormstart(unit, 0);
splx(opri);
return;