diff options
| author | Suresh Reddy <Suresh.Reddy@emulex.com> | 2015-03-20 13:28:25 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-20 20:25:51 +0300 |
| commit | 25848c9015964d9d97dffd48bbb88b75a25d0a1b (patch) | |
| tree | 0e321b8836c83eb8a757bfdaabb339b1ee938318 /drivers/net/ethernet/emulex/benet/be.h | |
| parent | c8ba4ad0b59c511578f8f706aae711f01c990794 (diff) | |
| download | linux-25848c9015964d9d97dffd48bbb88b75a25d0a1b.tar.xz | |
be2net: use PCI MMIO read instead of config read for errors
When an EEH error occurs, the device/slot is disconnected. This condition
is more reliably detected (i.e., returns all ones) with an MMIO read rather
than a config read -- especially on power platforms.
Hence, this patch fixes EEH error detection by replacing config reads with
MMIO reads for reading the error registers. The error registers in
Skyhawk-R/BE2/BE3 are accessible both via the config space and the
PCICFG (BAR0) memory space.
Reported-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Suresh Reddy <Suresh.Reddy@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/emulex/benet/be.h')
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index 92eb0c82bb04..27b9fe99a9bd 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -424,6 +424,7 @@ struct be_adapter { u8 __iomem *csr; /* CSR BAR used only for BE2/3 */ u8 __iomem *db; /* Door Bell */ + u8 __iomem *pcicfg; /* On SH,BEx only. Shadow of PCI config space */ struct mutex mbox_lock; /* For serializing mbox cmds to BE card */ struct be_dma_mem mbox_mem; |