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net: smc911x: Add pkt_data_pull and pkt_data_push function

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The RSK7203 board has the SMSC9118 wired up 'incorrectly'.
Byte-swapping is necessary, and so poor performance is inevitable.
This problem cannot evade by the swap function of CHIP, this can
evade by software Byte-swapping.
And this has problem by FIFO access only. pkt_data_pull/pkt_data_push
functions necessary to solve this problem.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Nobuhiro Iwamatsu 2008-08-28 13:40:44 +09:00 committed by Ben Warren
parent 10efa024b8
commit 33314470ab
1 changed files with 7 additions and 2 deletions
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9
drivers/net/smc911x.c
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@ -57,6 +57,11 @@ static inline void reg_write(u32 addr, u32 val)
#error "SMC911X: undefined bus width"
#endif /* CONFIG_DRIVER_SMC911X_16_BIT */
u32 pkt_data_pull(u32 addr) \
__attribute__ ((weak, alias ("reg_read")));
void pkt_data_push(u32 addr, u32 val) \
__attribute__ ((weak, alias ("reg_write")));
#define mdelay(n) udelay((n)*1000)
/* Below are the register offsets and bit definitions
@ -641,7 +646,7 @@ int eth_send(volatile void *packet, int length)
tmplen = (length + 3) / 4;
while (tmplen--)
reg_write(TX_DATA_FIFO, *data++);
pkt_data_push(TX_DATA_FIFO, *data++);
/* wait for transmission */
while (!((reg_read(TX_FIFO_INF) & TX_FIFO_INF_TSUSED) >> 16));
@ -684,7 +689,7 @@ int eth_rx(void)
tmplen = (pktlen + 2+ 3) / 4;
while (tmplen--)
*data++ = reg_read(RX_DATA_FIFO);
*data++ = pkt_data_pull(RX_DATA_FIFO);
if (status & RX_STS_ES)
printf(DRIVERNAME