diff options
| author | Matthew Vick <matthew.vick@intel.com> | 2012-04-14 05:20:32 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2012-05-17 05:04:21 -0700 |
| commit | 0c02dd983f0971813fcae81672b9533c35a5b2db (patch) | |
| tree | 74c7c3bf1d748f62feb2cf0a0ffcf92cf1378c86 /drivers/net/ethernet/intel/igb/e1000_defines.h | |
| parent | a3060858c207d944194a30478d30d3e1822e23f3 (diff) | |
| download | talos-obmc-linux-0c02dd983f0971813fcae81672b9533c35a5b2db.tar.gz talos-obmc-linux-0c02dd983f0971813fcae81672b9533c35a5b2db.zip | |
igb: Disable the BMC-to-OS Watchdog Enable bit for DMAC.
Under certain scenarios, it's possible that bursty manageability traffic
over the BMC-to-OS path may overrun the internal manageability receive
buffer causing dropped manageability packets. Clearing this bit prevents
this situation by interrupting coalescing to allow manageability traffic
through.
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igb/e1000_defines.h')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/e1000_defines.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/e1000_defines.h b/drivers/net/ethernet/intel/igb/e1000_defines.h index 6409f85632f5..ec7e4fe3e3ee 100644 --- a/drivers/net/ethernet/intel/igb/e1000_defines.h +++ b/drivers/net/ethernet/intel/igb/e1000_defines.h @@ -301,6 +301,8 @@ * transactions */ #define E1000_DMACR_DMAC_LX_SHIFT 28 #define E1000_DMACR_DMAC_EN 0x80000000 /* Enable DMA Coalescing */ +/* DMA Coalescing BMC-to-OS Watchdog Enable */ +#define E1000_DMACR_DC_BMC2OSW_EN 0x00008000 #define E1000_DMCTXTH_DMCTTHR_MASK 0x00000FFF /* DMA Coalescing Transmit * Threshold */ |
