From 3bea15a76eecc03729bf74d6ab2a1f849c08423e Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Tue, 28 Mar 2006 11:03:44 -0500 Subject: [SCSI] Disable sym2 driver queueing 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 Signed-off-by: James Bottomley --- drivers/scsi/sym53c8xx_2/sym_glue.c | 9 ++------- drivers/scsi/sym53c8xx_2/sym_glue.h | 2 +- drivers/scsi/sym53c8xx_2/sym_hipd.c | 8 +++++--- drivers/scsi/sym53c8xx_2/sym_hipd.h | 2 ++ 4 files changed, 10 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c index 052ce11806a..a27dd66b661 100644 --- a/drivers/scsi/sym53c8xx_2/sym_glue.c +++ b/drivers/scsi/sym53c8xx_2/sym_glue.c @@ -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); } } diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.h b/drivers/scsi/sym53c8xx_2/sym_glue.h index cc92d0c70cd..a446cda3f64 100644 --- a/drivers/scsi/sym53c8xx_2/sym_glue.h +++ b/drivers/scsi/sym53c8xx_2/sym_glue.h @@ -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 /* diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.c b/drivers/scsi/sym53c8xx_2/sym_hipd.c index b2ac482caae..a6cbb90e2bb 100644 --- a/drivers/scsi/sym53c8xx_2/sym_hipd.c +++ b/drivers/scsi/sym53c8xx_2/sym_hipd.c @@ -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. diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.h b/drivers/scsi/sym53c8xx_2/sym_hipd.h index 2456090bb24..79ab6a17703 100644 --- a/drivers/scsi/sym53c8xx_2/sym_hipd.h +++ b/drivers/scsi/sym53c8xx_2/sym_hipd.h @@ -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); -- cgit v1.2.3-70-g09d2