diff options
| author | Lendacky, Thomas <Thomas.Lendacky@amd.com> | 2014-07-02 20:04:46 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-08 06:38:06 +0200 |
| commit | 9867e8fb2c45888cc594457914dcbba599f086c8 (patch) | |
| tree | 9a64c6124f280b9368f1f7789ebf1cca855b7886 /drivers/net/ethernet/amd/xgbe/xgbe-common.h | |
| parent | amd-xgbe: Call netif_napi_del on ndo_stop operation (diff) | |
| download | linux-9867e8fb2c45888cc594457914dcbba599f086c8.tar.xz linux-9867e8fb2c45888cc594457914dcbba599f086c8.zip | |
amd-xgbe: Performance enhancements
This patch provides some general performance enhancements for the
driver:
- Modify the default coalescing settings (reduce usec, increase frames)
- Change the AXI burst length to 256 bytes (default was 16 bytes which
was smaller than a cache line)
- Change the AXI cache settings to write-back/write-allocate which
allocate cache entries for received packets during the DMA since the
packet will be processed soon afterwards
- Combine ioread/iowrite when disabling both the Tx and Rx interrupts
- Change to processing the Tx/Rx channels in pairs
- Only recycle the Rx descriptors when a threshold of dirty descriptors
is reached
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/amd/xgbe/xgbe-common.h')
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-common.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-common.h b/drivers/net/ethernet/amd/xgbe/xgbe-common.h index ccbceba553e5..7ec80ac7043f 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-common.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe-common.h @@ -170,6 +170,8 @@ #define DMA_MR_SWR_WIDTH 1 #define DMA_SBMR_EAME_INDEX 11 #define DMA_SBMR_EAME_WIDTH 1 +#define DMA_SBMR_BLEN_256_INDEX 7 +#define DMA_SBMR_BLEN_256_WIDTH 1 #define DMA_SBMR_UNDEF_INDEX 0 #define DMA_SBMR_UNDEF_WIDTH 1 |