diff options
Diffstat (limited to 'drivers/net/sun8i_emac.c')
| -rw-r--r-- | drivers/net/sun8i_emac.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c index 7c088c3..4c149e1 100644 --- a/drivers/net/sun8i_emac.c +++ b/drivers/net/sun8i_emac.c @@ -32,7 +32,14 @@ #define CONFIG_TX_DESCR_NUM 32 #define CONFIG_RX_DESCR_NUM 32 -#define CONFIG_ETH_BUFSIZE 2024 +#define CONFIG_ETH_BUFSIZE 2048 /* Note must be dma aligned */ + +/* + * The datasheet says that each descriptor can transfers up to 4096 bytes + * But later, the register documentation reduces that value to 2048, + * using 2048 cause strange behaviours and even BSP driver use 2047 + */ +#define CONFIG_ETH_RXSIZE 2044 /* Note must fit in ETH_BUFSIZE */ #define TX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_TX_DESCR_NUM) #define RX_TOTAL_BUFSIZE (CONFIG_ETH_BUFSIZE * CONFIG_RX_DESCR_NUM) @@ -324,7 +331,7 @@ static void rx_descs_init(struct emac_eth_dev *priv) desc_p->buf_addr = (uintptr_t)&rxbuffs[idx * CONFIG_ETH_BUFSIZE] ; desc_p->next = (uintptr_t)&desc_table_p[idx + 1]; - desc_p->st |= CONFIG_ETH_BUFSIZE; + desc_p->st |= CONFIG_ETH_RXSIZE; desc_p->status = BIT(31); } @@ -506,7 +513,7 @@ static int _sun8i_eth_recv(struct emac_eth_dev *priv, uchar **packetp) roundup(data_end, ARCH_DMA_MINALIGN)); if (good_packet) { - if (length > CONFIG_ETH_BUFSIZE) { + if (length > CONFIG_ETH_RXSIZE) { printf("Received packet is too big (len=%d)\n", length); return -EMSGSIZE; |