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[tg3] Fix excessive DMA alignment.

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Change the DMA alignment from 4096 bytes to 16 bytes, to conserve
available DMA memory.  The hardware doesn't have any specific
alignment requirements.

Signed-off-by: Thomas Miletich <thomas.miletich@gmail.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Thomas Miletich 2012-07-24 15:07:05 +02:00 committed by Michael Brown
parent 183a70e8b7
commit ced1493c02
1 changed files with 1 additions and 2 deletions
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3
src/drivers/net/tg3/tg3.h
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@ -3277,8 +3277,7 @@ struct tg3 {
#define TG3_TX_RING_SIZE 512
#define TG3_DEF_TX_RING_PENDING (TG3_TX_RING_SIZE - 1)
/* FIXME: look up alignment requirement in datasheet, page align for now */
#define TG3_DMA_ALIGNMENT 4096
#define TG3_DMA_ALIGNMENT 16
#define TG3_RX_STD_DMA_SZ (1536 + 64 + 2)