Current driver is meant for cache coherent systems. This patch adds
flush_cache() routines to support cache non-coherent systems.
Signed-off-by: Shinya Kuribayashi <[EMAIL PROTECTED]>
Cc: Masami Komiya <[EMAIL PROTECTED]>
Cc: Lucas Jin <[EMAIL PROTECTED]>
---
drivers/net/rtl8139.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/net/rtl8139.c b/drivers/net/rtl8139.c
index 5d7ae74..014f3b4 100644
--- a/drivers/net/rtl8139.c
+++ b/drivers/net/rtl8139.c
@@ -389,6 +389,7 @@ static void rtl_reset(struct eth_device *dev)
#ifdef DEBUG_RX
printf("rx ring address is %X\n",(unsigned long)rx_ring);
#endif
+ flush_cache((unsigned long)rx_ring, RX_BUF_LEN);
outl(phys_to_bus((int)rx_ring), ioaddr + RxBuf);
/* If we add multicast support, the MAR0 register would have to be
@@ -430,6 +431,7 @@ static int rtl_transmit(struct eth_device *dev, volatile
void *packet, int lengt
tx_buffer[len++] = '\0';
}
+ flush_cache((unsigned long)tx_buffer, length);
outl(phys_to_bus((int)tx_buffer), ioaddr + TxAddr0 + cur_tx*4);
outl(((TX_FIFO_THRESH<<11) & 0x003f0000) | len,
ioaddr + TxStatus0 + cur_tx*4);
@@ -486,7 +488,8 @@ static int rtl_poll(struct eth_device *dev)
#endif
ring_offs = cur_rx % RX_BUF_LEN;
- rx_status = *(unsigned int*)KSEG1ADDR((rx_ring + ring_offs));
+ /* ring_offs is guaranteed being 4-byte aligned */
+ rx_status = *(unsigned int *)(rx_ring + ring_offs);
rx_size = rx_status >> 16;
rx_status &= 0xffff;
@@ -516,6 +519,7 @@ static int rtl_poll(struct eth_device *dev)
printf("rx packet %d bytes", rx_size-4);
#endif
}
+ flush_cache((unsigned long)rx_ring, RX_BUF_LEN);
cur_rx = (cur_rx + rx_size + 4 + 3) & ~3;
outw(cur_rx - 16, ioaddr + RxBufPtr);
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