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| author | Steve Hodgson <shodgson@solarflare.com> | 2011-03-22 19:46:43 +0000 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2011-03-23 01:35:15 +0000 |
| commit | d88d6b05fee3cc78e5b0273eb58c31201dcc6b76 (patch) | |
| tree | ba6286ba53298271070c217492f39bdb259681e4 /drivers/net/sfc/workarounds.h | |
| parent | 736561a01f11114146b1b7f82d486fa9c95828ef (diff) | |
| download | op-kernel-dev-d88d6b05fee3cc78e5b0273eb58c31201dcc6b76.zip op-kernel-dev-d88d6b05fee3cc78e5b0273eb58c31201dcc6b76.tar.gz | |
sfc: Siena: Disable write-combining when SR-IOV is enabled
If SR-IOV is enabled by firmware, even if it is not enabled in the PCI
capability, TX pushes using write-combining may be corrupted.
We want to know whether it is enabled before mapping the NIC
registers, and even if PCI extended capabilities are not accessible.
Therefore, we look for the MSI capability, which is removed if SR-IOV
is enabled.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/sfc/workarounds.h')
| -rw-r--r-- | drivers/net/sfc/workarounds.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/sfc/workarounds.h b/drivers/net/sfc/workarounds.h index e4dd3a7..99ff114 100644 --- a/drivers/net/sfc/workarounds.h +++ b/drivers/net/sfc/workarounds.h @@ -38,6 +38,8 @@ #define EFX_WORKAROUND_15783 EFX_WORKAROUND_ALWAYS /* Legacy interrupt storm when interrupt fifo fills */ #define EFX_WORKAROUND_17213 EFX_WORKAROUND_SIENA +/* Write combining and sriov=enabled are incompatible */ +#define EFX_WORKAROUND_22643 EFX_WORKAROUND_SIENA /* Spurious parity errors in TSORT buffers */ #define EFX_WORKAROUND_5129 EFX_WORKAROUND_FALCON_A |
