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rtl8169: fix cache coherency problem 

Fix the problem that cannot access actual data when CPU data cache enabled.

Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Tested-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Acked-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Yoshihiro Shimoda 2009-02-25 14:27:24 +09:00 committed by Wolfgang Denk
parent 9c48a8ea38
commit d4c02e6f5d
1 changed files with 10 additions and 1 deletions
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11
drivers/net/rtl8169.c
View File

@ -420,6 +420,8 @@ static int rtl_recv(struct eth_device *dev)
ioaddr = dev->iobase;
cur_rx = tpc->cur_rx;
flush_cache((unsigned long)&tpc->RxDescArray[cur_rx],
sizeof(struct RxDesc));
if ((le32_to_cpu(tpc->RxDescArray[cur_rx].status) & OWNbit) == 0) {
if (!(le32_to_cpu(tpc->RxDescArray[cur_rx].status) & RxRES)) {
unsigned char rxdata[RX_BUF_LEN];
@ -437,6 +439,8 @@ static int rtl_recv(struct eth_device *dev)
cpu_to_le32(OWNbit + RX_BUF_SIZE);
tpc->RxDescArray[cur_rx].buf_addr =
cpu_to_le32((unsigned long)tpc->RxBufferRing[cur_rx]);
flush_cache((unsigned long)tpc->RxBufferRing[cur_rx],
RX_BUF_SIZE);
} else {
puts("Error Rx");
}
@ -478,6 +482,7 @@ static int rtl_send(struct eth_device *dev, volatile void *packet, int length)
/* point to the current txb incase multiple tx_rings are used */
ptxb = tpc->Tx_skbuff[entry * MAX_ETH_FRAME_SIZE];
memcpy(ptxb, (char *)packet, (int)length);
flush_cache((unsigned long)ptxb, length);
while (len < ETH_ZLEN)
ptxb[len++] = '\0';
@ -497,7 +502,10 @@ static int rtl_send(struct eth_device *dev, volatile void *packet, int length)
tpc->cur_tx++;
to = currticks() + TX_TIMEOUT;
while ((le32_to_cpu(tpc->TxDescArray[entry].status) & OWNbit)
do {
flush_cache((unsigned long)&tpc->TxDescArray[entry],
sizeof(struct TxDesc));
} while ((le32_to_cpu(tpc->TxDescArray[entry].status) & OWNbit)
&& (currticks() < to)); /* wait */
if (currticks() >= to) {
@ -639,6 +647,7 @@ static void rtl8169_init_ring(struct eth_device *dev)
tpc->RxBufferRing[i] = &rxb[i * RX_BUF_SIZE];
tpc->RxDescArray[i].buf_addr =
cpu_to_le32((unsigned long)tpc->RxBufferRing[i]);
flush_cache((unsigned long)tpc->RxBufferRing[i], RX_BUF_SIZE);
}
#ifdef DEBUG_RTL8169