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| author | Carolyn Wyborny <carolyn.wyborny@intel.com> | 2011-03-11 20:43:54 -0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-03-12 04:09:55 -0800 |
| commit | 831ec0b4226cec7ea34f5c4c9810e78aeb2069bf (patch) | |
| tree | 3576b08f16304217c5353b5a6aa2fa5ba5350187 /drivers/net/igb/igb.h | |
| parent | 4322e561a93ec7ee034b603a6c610e7be90d4e8a (diff) | |
| download | linux-831ec0b4226cec7ea34f5c4c9810e78aeb2069bf.tar.gz linux-831ec0b4226cec7ea34f5c4c9810e78aeb2069bf.tar.bz2 linux-831ec0b4226cec7ea34f5c4c9810e78aeb2069bf.zip | |
igb: Add DMA Coalescing feature to driver
This patch add DMA Coalescing which is a power-saving feature that
coalesces DMA writes in order to stay in a low-power state as much
as possible. Feature is disabled by default.
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/igb/igb.h')
| -rw-r--r-- | drivers/net/igb/igb.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h index bbc5ebfe254a..1c687e298d5e 100644 --- a/drivers/net/igb/igb.h +++ b/drivers/net/igb/igb.h @@ -333,6 +333,12 @@ struct igb_adapter { #define IGB_FLAG_DCA_ENABLED (1 << 1) #define IGB_FLAG_QUAD_PORT_A (1 << 2) #define IGB_FLAG_QUEUE_PAIRS (1 << 3) +#define IGB_FLAG_DMAC (1 << 4) + +/* DMA Coalescing defines */ +#define IGB_MIN_TXPBSIZE 20408 +#define IGB_TX_BUF_4096 4096 +#define IGB_DMCTLX_DCFLUSH_DIS 0x80000000 /* Disable DMA Coal Flush */ #define IGB_82576_TSYNC_SHIFT 19 #define IGB_82580_TSYNC_SHIFT 24 |