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path: root/drivers/scsi/aic7xxx/aic79xx_osm.c
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Diffstat (limited to 'drivers/scsi/aic7xxx/aic79xx_osm.c')
-rw-r--r--drivers/scsi/aic7xxx/aic79xx_osm.c43
1 files changed, 32 insertions, 11 deletions
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 2567e29960b..7254ea535a1 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -314,6 +314,21 @@ static uint32_t aic79xx_seltime;
*/
uint32_t aic79xx_periodic_otag;
+/* Some storage boxes are using an LSI chip which has a bug making it
+ * impossible to use aic79xx Rev B chip in 320 speeds. The following
+ * storage boxes have been reported to be buggy:
+ * EonStor 3U 16-Bay: U16U-G3A3
+ * EonStor 2U 12-Bay: U12U-G3A3
+ * SentinelRAID: 2500F R5 / R6
+ * SentinelRAID: 2500F R1
+ * SentinelRAID: 2500F/1500F
+ * SentinelRAID: 150F
+ *
+ * To get around this LSI bug, you can set your board to 160 mode
+ * or you can enable the SLOWCRC bit.
+ */
+uint32_t aic79xx_slowcrc;
+
/*
* Module information and settable options.
*/
@@ -343,6 +358,7 @@ MODULE_PARM_DESC(aic79xx,
" amplitude:<int> Set the signal amplitude (0-7).\n"
" seltime:<int> Selection Timeout:\n"
" (0/256ms,1/128ms,2/64ms,3/32ms)\n"
+" slowcrc Turn on the SLOWCRC bit (Rev B only)\n"
"\n"
" Sample /etc/modprobe.conf line:\n"
" Enable verbose logging\n"
@@ -1003,6 +1019,7 @@ aic79xx_setup(char *s)
{ "slewrate", NULL },
{ "precomp", NULL },
{ "amplitude", NULL },
+ { "slowcrc", &aic79xx_slowcrc },
};
end = strchr(s, '\0');
@@ -1072,7 +1089,6 @@ ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *templa
return (ENOMEM);
*((struct ahd_softc **)host->hostdata) = ahd;
- ahd_lock(ahd, &s);
ahd->platform_data->host = host;
host->can_queue = AHD_MAX_QUEUE;
host->cmd_per_lun = 2;
@@ -1083,7 +1099,9 @@ ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *templa
host->max_lun = AHD_NUM_LUNS;
host->max_channel = 0;
host->sg_tablesize = AHD_NSEG;
+ ahd_lock(ahd, &s);
ahd_set_unit(ahd, ahd_linux_unit++);
+ ahd_unlock(ahd, &s);
sprintf(buf, "scsi%d", host->host_no);
new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
if (new_name != NULL) {
@@ -1093,7 +1111,6 @@ ahd_linux_register_host(struct ahd_softc *ahd, struct scsi_host_template *templa
host->unique_id = ahd->unit;
ahd_linux_initialize_scsi_bus(ahd);
ahd_intr_enable(ahd, TRUE);
- ahd_unlock(ahd, &s);
host->transportt = ahd_linux_transport_template;
@@ -1127,6 +1144,7 @@ ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
{
u_int target_id;
u_int numtarg;
+ unsigned long s;
target_id = 0;
numtarg = 0;
@@ -1139,6 +1157,8 @@ ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
else
numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
+ ahd_lock(ahd, &s);
+
/*
* Force negotiation to async for all targets that
* will not see an initial bus reset.
@@ -1155,16 +1175,12 @@ ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
ahd_update_neg_request(ahd, &devinfo, tstate,
tinfo, AHD_NEG_ALWAYS);
}
+ ahd_unlock(ahd, &s);
/* Give the bus some time to recover */
if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
ahd_freeze_simq(ahd);
- init_timer(&ahd->platform_data->reset_timer);
- ahd->platform_data->reset_timer.data = (u_long)ahd;
- ahd->platform_data->reset_timer.expires =
- jiffies + (AIC79XX_RESET_DELAY * HZ)/1000;
- ahd->platform_data->reset_timer.function =
- (ahd_linux_callback_t *)ahd_release_simq;
- add_timer(&ahd->platform_data->reset_timer);
+ msleep(AIC79XX_RESET_DELAY);
+ ahd_release_simq(ahd);
}
}
@@ -2033,6 +2049,9 @@ ahd_linux_sem_timeout(u_long arg)
void
ahd_freeze_simq(struct ahd_softc *ahd)
{
+ unsigned long s;
+
+ ahd_lock(ahd, &s);
ahd->platform_data->qfrozen++;
if (ahd->platform_data->qfrozen == 1) {
scsi_block_requests(ahd->platform_data->host);
@@ -2040,6 +2059,7 @@ ahd_freeze_simq(struct ahd_softc *ahd)
CAM_LUN_WILDCARD, SCB_LIST_NULL,
ROLE_INITIATOR, CAM_REQUEUE_REQ);
}
+ ahd_unlock(ahd, &s);
}
void
@@ -2344,8 +2364,9 @@ done:
ahd_name(ahd), dev->active);
retval = FAILED;
}
- }
- ahd_unlock(ahd, &flags);
+ } else
+ ahd_unlock(ahd, &flags);
+
return (retval);
}