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authorEric Moore <eric.moore@lsi.com>2007-02-07 16:51:40 -0700
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-04-30 10:22:00 -0500
commit7297824581755593535fc97d2c8b6c47e2dc2db6 (patch)
tree0bfcac9cff647e370764dba070ef66df21e3ba22 /drivers/message/fusion
parent4e08df3f91837656c36712f559d5ce8d80852760 (diff)
[SCSI] fusion: fix domain validation loops
After host reset, the device are programmed to default asyn narrow nego. We need to reprogram the parameter back to previous values. If the host reset is called as a result of spi_dv_device() commands timing out, its possible to get into an infinite loop of dv to host reset. This will prevent that case, as we merely program old values. If host reset is called outside context of domain validation, then we can call spi_dv_device. Signed-off-by: Eric Moore <Eric.Moore@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/message/fusion')
-rw-r--r--drivers/message/fusion/mptbase.h1
-rw-r--r--drivers/message/fusion/mptspi.c23
2 files changed, 22 insertions, 2 deletions
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index e3a39272aad..d25d3be8fcd 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -994,6 +994,7 @@ typedef struct _MPT_SCSI_HOST {
int scandv_wait_done;
long last_queue_full;
u16 tm_iocstatus;
+ u16 spi_pending;
struct list_head target_reset_list;
} MPT_SCSI_HOST;
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index b08416f84ed..d75f7ffbb02 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -676,7 +676,9 @@ static void mptspi_dv_device(struct _MPT_SCSI_HOST *hd,
return;
}
+ hd->spi_pending |= (1 << sdev->id);
spi_dv_device(sdev);
+ hd->spi_pending &= ~(1 << sdev->id);
if (sdev->channel == 1 &&
mptscsih_quiesce_raid(hd, 0, vtarget->channel, vtarget->id) < 0)
@@ -1202,11 +1204,27 @@ mptspi_dv_renegotiate_work(struct work_struct *work)
container_of(work, struct work_queue_wrapper, work);
struct _MPT_SCSI_HOST *hd = wqw->hd;
struct scsi_device *sdev;
+ struct scsi_target *starget;
+ struct _CONFIG_PAGE_SCSI_DEVICE_1 pg1;
+ u32 nego;
kfree(wqw);
- shost_for_each_device(sdev, hd->ioc->sh)
- mptspi_dv_device(hd, sdev);
+ if (hd->spi_pending) {
+ shost_for_each_device(sdev, hd->ioc->sh) {
+ if (hd->spi_pending & (1 << sdev->id))
+ continue;
+ starget = scsi_target(sdev);
+ nego = mptspi_getRP(starget);
+ pg1.RequestedParameters = cpu_to_le32(nego);
+ pg1.Reserved = 0;
+ pg1.Configuration = 0;
+ mptspi_write_spi_device_pg1(starget, &pg1);
+ }
+ } else {
+ shost_for_each_device(sdev, hd->ioc->sh)
+ mptspi_dv_device(hd, sdev);
+ }
}
static void
@@ -1452,6 +1470,7 @@ mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
init_waitqueue_head(&hd->scandv_waitq);
hd->scandv_wait_done = 0;
hd->last_queue_full = 0;
+ hd->spi_pending = 0;
/* Some versions of the firmware don't support page 0; without
* that we can't get the parameters */