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authorLinas Vepstas <linas@austin.ibm.com>2007-10-05 15:55:04 -0400
committerJames Bottomley <jejb@mulgrave.localdomain>2007-10-23 15:10:20 -0400
commitd68cd75992f95d6977956fb227f02e6d532f3d26 (patch)
treeeb28d218817bb9c893220191ad9a7a90ef474861 /drivers/scsi/sym53c8xx_2/sym_hipd.c
parent2ba65367720d871f9d955ca3ef96358999182765 (diff)
[SCSI] sym53c8xx: PCI Error Recovery support
This patch adds the PCI error recovery callbacks to the Symbios SCSI device driver. It includes support for First Failure Data Capture. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Assorted changes to initial patches, including returning IRQ_NONE from the interrupt handler if the device is offline and re-using the eh_done completion in the scsi error handler. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/sym53c8xx_2/sym_hipd.c')
-rw-r--r--drivers/scsi/sym53c8xx_2/sym_hipd.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.c b/drivers/scsi/sym53c8xx_2/sym_hipd.c
index 21cd4c7f528..af24c447b19 100644
--- a/drivers/scsi/sym53c8xx_2/sym_hipd.c
+++ b/drivers/scsi/sym53c8xx_2/sym_hipd.c
@@ -1180,10 +1180,10 @@ static void sym_log_hard_error(struct sym_hcb *np, u_short sist, u_char dstat)
scr_to_cpu((int) *(u32 *)(script_base + script_ofs)));
}
- printf ("%s: regdump:", sym_name(np));
- for (i=0; i<24;i++)
- printf (" %02x", (unsigned)INB_OFF(np, i));
- printf (".\n");
+ printf("%s: regdump:", sym_name(np));
+ for (i = 0; i < 24; i++)
+ printf(" %02x", (unsigned)INB_OFF(np, i));
+ printf(".\n");
/*
* PCI BUS error.
@@ -1192,6 +1192,16 @@ static void sym_log_hard_error(struct sym_hcb *np, u_short sist, u_char dstat)
sym_log_bus_error(np);
}
+void sym_dump_registers(struct sym_hcb *np)
+{
+ u_short sist;
+ u_char dstat;
+
+ sist = INW(np, nc_sist);
+ dstat = INB(np, nc_dstat);
+ sym_log_hard_error(np, sist, dstat);
+}
+
static struct sym_chip sym_dev_table[] = {
{PCI_DEVICE_ID_NCR_53C810, 0x0f, "810", 4, 8, 4, 64,
FE_ERL}
@@ -2809,6 +2819,13 @@ void sym_interrupt (struct sym_hcb *np)
dstat |= INB(np, nc_dstat);
istatc = INB(np, nc_istat);
istat |= istatc;
+
+ /* Prevent deadlock waiting on a condition that may
+ * never clear. */
+ if (unlikely(sist == 0xffff && dstat == 0xff)) {
+ if (pci_channel_offline(np->s.device))
+ return;
+ }
} while (istatc & (SIP|DIP));
if (DEBUG_FLAGS & DEBUG_TINY)