diff options
| author | Prabhakar Kushwaha <prabhakar@freescale.com> | 2015-11-04 06:56:02 (GMT) |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-11-30 16:53:03 (GMT) |
| commit | 14480454c76d0f0bc4c5828cc1f054ba6278530e (patch) | |
| tree | 8b8e6a563d08e254d7a4593e1e426a80d0d17956 /drivers/net/ldpaa_eth/ldpaa_eth.h | |
| parent | 5038d3e5f23ad979c05fa339284576ccb7e90c07 (diff) | |
| download | u-boot-14480454c76d0f0bc4c5828cc1f054ba6278530e.tar.xz | |
driver: net: ldpaa: Fix Rx buffer alignment
MC 0.7.1.2 enforces limitation i.e.: "Packets may be corrupted
in several combinations of buffer size and frame offsets.
Workaround: Use buffers that are of size that is a multiple of 256, and
frame offset that is a multiple of 256"
Updating the DPNI Eth driver to comply with the restriction.
Signed-off-by: Bogdan Hamciuc <bogdan.hamciuc@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'drivers/net/ldpaa_eth/ldpaa_eth.h')
| -rw-r--r-- | drivers/net/ldpaa_eth/ldpaa_eth.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/ldpaa_eth/ldpaa_eth.h b/drivers/net/ldpaa_eth/ldpaa_eth.h index b86a695..af41b27 100644 --- a/drivers/net/ldpaa_eth/ldpaa_eth.h +++ b/drivers/net/ldpaa_eth/ldpaa_eth.h @@ -28,10 +28,10 @@ enum ldpaa_eth_type { #define LDPAA_ETH_REFILL_THRESH (LDPAA_ETH_NUM_BUFS/2) #define LDPAA_ETH_RX_BUFFER_SIZE 2048 -/* Hardware requires alignment for ingress/egress buffer addresses - * and ingress buffer lengths. +/* Hardware requires alignment for buffer address and length: 256-byte + * for ingress, 64-byte for egress. Using 256 for both. */ -#define LDPAA_ETH_BUF_ALIGN 64 +#define LDPAA_ETH_BUF_ALIGN 256 /* So far we're only accomodating a skb backpointer in the frame's * software annotation, but the hardware options are either 0 or 64. |