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drivers/net/rtl8139.c: Fix cache coherency issues 

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 <shinya.kuribayashi@necel.com>
Cc: Masami Komiya <mkomiya@sonare.it>
Cc: Lucas Jin <lucasjin@gmail.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Shinya Kuribayashi 2008-01-16 16:12:26 +09:00 committed by Ben Warren
parent d1276c76c1
commit 96a236746f
1 changed files with 5 additions and 1 deletions
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6
drivers/net/rtl8139.c
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@ -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);