From 84e203a279d3de1c8a41a73ab45e55a89bc19345 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Tue, 29 Nov 2005 23:08:31 -0500 Subject: [SCSI] sym2: Manage sym_lcb properly Allocate the lcb in slave_alloc and free it in slave_destroy. This allows us to remove all the code that checks to see if it's already been allocated. From: Christoph Hellwig Signed-off-by: Matthew Wilcox Signed-off-by: James Bottomley --- drivers/scsi/sym53c8xx_2/sym_hipd.c | 86 +++---------------------------------- 1 file changed, 7 insertions(+), 79 deletions(-) (limited to 'drivers/scsi/sym53c8xx_2/sym_hipd.c') diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.c b/drivers/scsi/sym53c8xx_2/sym_hipd.c index 113e3b35716..bec644850d3 100644 --- a/drivers/scsi/sym53c8xx_2/sym_hipd.c +++ b/drivers/scsi/sym53c8xx_2/sym_hipd.c @@ -1523,7 +1523,7 @@ static int sym_prepare_nego(struct sym_hcb *np, struct sym_ccb *cp, u_char *msgp /* * Insert a job into the start queue. */ -void sym_put_start_queue(struct sym_hcb *np, struct sym_ccb *cp) +static void sym_put_start_queue(struct sym_hcb *np, struct sym_ccb *cp) { u_short qidx; @@ -4664,30 +4664,7 @@ struct sym_ccb *sym_get_ccb (struct sym_hcb *np, struct scsi_cmnd *cmd, u_char t goto out; cp = sym_que_entry(qp, struct sym_ccb, link_ccbq); -#ifndef SYM_OPT_HANDLE_DEVICE_QUEUEING - /* - * If the LCB is not yet available and the LUN - * has been probed ok, try to allocate the LCB. - */ - if (!lp && sym_is_bit(tp->lun_map, ln)) { - lp = sym_alloc_lcb(np, tn, ln); - if (!lp) - goto out_free; - } -#endif - - /* - * If the LCB is not available here, then the - * logical unit is not yet discovered. For those - * ones only accept 1 SCSI IO per logical unit, - * since we cannot allow disconnections. - */ - if (!lp) { - if (!sym_is_bit(tp->busy0_map, ln)) - sym_set_bit(tp->busy0_map, ln); - else - goto out_free; - } else { + { /* * If we have been asked for a tagged command. */ @@ -4840,12 +4817,6 @@ void sym_free_ccb (struct sym_hcb *np, struct sym_ccb *cp) lp->head.resel_sa = cpu_to_scr(SCRIPTB_BA(np, resel_bad_lun)); } - /* - * Otherwise, we only accept 1 IO per LUN. - * Clear the bit that keeps track of this IO. - */ - else - sym_clr_bit(tp->busy0_map, cp->lun); /* * We donnot queue more than 1 ccb per target @@ -4997,20 +4968,7 @@ static void sym_init_tcb (struct sym_hcb *np, u_char tn) struct sym_lcb *sym_alloc_lcb (struct sym_hcb *np, u_char tn, u_char ln) { struct sym_tcb *tp = &np->target[tn]; - struct sym_lcb *lp = sym_lp(tp, ln); - - /* - * Already done, just return. - */ - if (lp) - return lp; - - /* - * Donnot allow LUN control block - * allocation for not probed LUNs. - */ - if (!sym_is_bit(tp->lun_map, ln)) - return NULL; + struct sym_lcb *lp = NULL; /* * Initialize the target control block if not yet. @@ -5082,13 +5040,7 @@ struct sym_lcb *sym_alloc_lcb (struct sym_hcb *np, u_char tn, u_char ln) lp->started_max = SYM_CONF_MAX_TASK; lp->started_limit = SYM_CONF_MAX_TASK; #endif - /* - * If we are busy, count the IO. - */ - if (sym_is_bit(tp->busy0_map, ln)) { - lp->busy_itl = 1; - sym_clr_bit(tp->busy0_map, ln); - } + fail: return lp; } @@ -5102,12 +5054,6 @@ static void sym_alloc_lcb_tags (struct sym_hcb *np, u_char tn, u_char ln) struct sym_lcb *lp = sym_lp(tp, ln); int i; - /* - * If LCB not available, try to allocate it. - */ - if (!lp && !(lp = sym_alloc_lcb(np, tn, ln))) - goto fail; - /* * Allocate the task table and and the tag allocation * circular buffer. We want both or none. @@ -5481,8 +5427,7 @@ finish: /* * Donnot start more than 1 command after an error. */ - if (lp) - sym_start_next_ccbs(np, lp, 1); + sym_start_next_ccbs(np, lp, 1); #endif } @@ -5520,12 +5465,6 @@ void sym_complete_ok (struct sym_hcb *np, struct sym_ccb *cp) tp = &np->target[cp->target]; lp = sym_lp(tp, cp->lun); - /* - * Assume device discovered on first success. - */ - if (!lp) - sym_set_bit(tp->lun_map, cp->lun); - /* * If all data have been transferred, given than no * extended error did occur, there is no residual. @@ -5578,7 +5517,7 @@ if (resid) /* * Requeue a couple of awaiting scsi commands. */ - if (lp && !sym_que_empty(&lp->waiting_ccbq)) + if (!sym_que_empty(&lp->waiting_ccbq)) sym_start_next_ccbs(np, lp, 2); #endif /* @@ -5821,8 +5760,7 @@ void sym_hcb_free(struct sym_hcb *np) SYM_QUEHEAD *qp; struct sym_ccb *cp; struct sym_tcb *tp; - struct sym_lcb *lp; - int target, lun; + int target; if (np->scriptz0) sym_mfree_dma(np->scriptz0, np->scriptz_sz, "SCRIPTZ0"); @@ -5848,16 +5786,6 @@ void sym_hcb_free(struct sym_hcb *np) for (target = 0; target < SYM_CONF_MAX_TARGET ; target++) { tp = &np->target[target]; - for (lun = 0 ; lun < SYM_CONF_MAX_LUN ; lun++) { - lp = sym_lp(tp, lun); - if (!lp) - continue; - if (lp->itlq_tbl) - sym_mfree_dma(lp->itlq_tbl, SYM_CONF_MAX_TASK*4, - "ITLQ_TBL"); - kfree(lp->cb_tags); - sym_mfree_dma(lp, sizeof(*lp), "LCB"); - } #if SYM_CONF_MAX_LUN > 1 kfree(tp->lunmp); #endif -- cgit v1.2.3