diff options
| author | Linas Vepstas <linas@austin.ibm.com> | 2007-10-05 15:55:04 -0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-10-23 15:10:20 -0400 |
| commit | d68cd75992f95d6977956fb227f02e6d532f3d26 (patch) | |
| tree | eb28d218817bb9c893220191ad9a7a90ef474861 /drivers/scsi/sym53c8xx_2/sym_hipd.c | |
| parent | 2ba65367720d871f9d955ca3ef96358999182765 (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.c | 25 |
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) |