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[SCSI] Disable sym2 driver queueing

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Undef SYM_OPT_HANDLE_DEVICE_QUEUEING.
Call sym_put_start_queue instead of sym_start_next_ccbs.
Turn asserts into checks that we can send the command to the adapter,
and return busy from queuecommand if we can't.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Matthew Wilcox 2006-03-28 11:03:44 -05:00 committed by James Bottomley
parent 76789f0176
commit 3bea15a76e
4 changed files with 10 additions and 11 deletions
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9
drivers/scsi/sym53c8xx_2/sym_glue.c
View file

@ -475,8 +475,6 @@ static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struc
*/
int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
{
struct sym_tcb *tp = &np->target[cp->target];
struct sym_lcb *lp = sym_lp(tp, cp->lun);
u32 lastp, goalp;
int dir;
@ -557,7 +555,7 @@ int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct s
/*
* activate this job.
*/
sym_start_next_ccbs(np, lp, 2);
sym_put_start_queue(np, cp);
return 0;
out_abort:
@ -871,15 +869,12 @@ static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags)
if (reqtags > lp->s.scdev_depth)
reqtags = lp->s.scdev_depth;
lp->started_limit = reqtags ? reqtags : 2;
lp->started_max = 1;
lp->s.reqtags = reqtags;
if (reqtags != oldtags) {
dev_info(&tp->starget->dev,
"tagged command queuing %s, command queue depth %d.\n",
lp->s.reqtags ? "enabled" : "disabled",
lp->started_limit);
lp->s.reqtags ? "enabled" : "disabled", reqtags);
}
}

2
drivers/scsi/sym53c8xx_2/sym_glue.h
View file

@ -68,7 +68,7 @@
*/
#define SYM_CONF_TIMER_INTERVAL ((HZ+1)/2)
#define SYM_OPT_HANDLE_DEVICE_QUEUEING
#undef SYM_OPT_HANDLE_DEVICE_QUEUEING
#define SYM_OPT_LIMIT_COMMAND_REORDERING
/*

8
drivers/scsi/sym53c8xx_2/sym_hipd.c
View file

@ -1469,7 +1469,7 @@ static int sym_prepare_nego(struct sym_hcb *np, struct sym_ccb *cp, u_char *msgp
/*
* Insert a job into the start queue.
*/
static void sym_put_start_queue(struct sym_hcb *np, struct sym_ccb *cp)
void sym_put_start_queue(struct sym_hcb *np, struct sym_ccb *cp)
{
u_short qidx;
@ -4602,7 +4602,8 @@ struct sym_ccb *sym_get_ccb (struct sym_hcb *np, struct scsi_cmnd *cmd, u_char t
* Debugging purpose.
*/
#ifndef SYM_OPT_HANDLE_DEVICE_QUEUEING
assert(lp->busy_itl == 0);
if (lp->busy_itl != 0)
goto out_free;
#endif
/*
* Allocate resources for tags if not yet.
@ -4647,7 +4648,8 @@ struct sym_ccb *sym_get_ccb (struct sym_hcb *np, struct scsi_cmnd *cmd, u_char t
* Debugging purpose.
*/
#ifndef SYM_OPT_HANDLE_DEVICE_QUEUEING
assert(lp->busy_itl == 0 && lp->busy_itlq == 0);
if (lp->busy_itl != 0 || lp->busy_itlq != 0)
goto out_free;
#endif
/*
* Count this nexus for this LUN.

2
drivers/scsi/sym53c8xx_2/sym_hipd.h
View file

@ -1049,6 +1049,8 @@ int sym_reset_scsi_bus(struct sym_hcb *np, int enab_int);
struct sym_chip *sym_lookup_chip_table(u_short device_id, u_char revision);
#ifdef SYM_OPT_HANDLE_DEVICE_QUEUEING
void sym_start_next_ccbs(struct sym_hcb *np, struct sym_lcb *lp, int maxn);
#else
void sym_put_start_queue(struct sym_hcb *np, struct sym_ccb *cp);
#endif
void sym_start_up(struct sym_hcb *np, int reason);
void sym_interrupt(struct sym_hcb *np);