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8139cp: set ring address before enabling receiver

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Currently, we enable the receiver before setting the ring address which could
lead the card DMA into unexpected areas. Solving this by set the ring address
before enabling the receiver.

btw. I find and test this in qemu as I didn't have a 8139cp card in hand. please
review it carefully.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jason Wang 2012-05-31 18:19:39 +00:00 committed by David S. Miller
parent 20e2a86485
commit b01af4579e
1 changed files with 11 additions and 11 deletions
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22
drivers/net/ethernet/realtek/8139cp.c
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@ -979,6 +979,17 @@ static void cp_init_hw (struct cp_private *cp)
cpw32_f (MAC0 + 0, le32_to_cpu (*(__le32 *) (dev->dev_addr + 0)));
cpw32_f (MAC0 + 4, le32_to_cpu (*(__le32 *) (dev->dev_addr + 4)));
cpw32_f(HiTxRingAddr, 0);
cpw32_f(HiTxRingAddr + 4, 0);
ring_dma = cp->ring_dma;
cpw32_f(RxRingAddr, ring_dma & 0xffffffff);
cpw32_f(RxRingAddr + 4, (ring_dma >> 16) >> 16);
ring_dma += sizeof(struct cp_desc) * CP_RX_RING_SIZE;
cpw32_f(TxRingAddr, ring_dma & 0xffffffff);
cpw32_f(TxRingAddr + 4, (ring_dma >> 16) >> 16);
cp_start_hw(cp);
cpw8(TxThresh, 0x06); /* XXX convert magic num to a constant */
@ -992,17 +1003,6 @@ static void cp_init_hw (struct cp_private *cp)
cpw8(Config5, cpr8(Config5) & PMEStatus);
cpw32_f(HiTxRingAddr, 0);
cpw32_f(HiTxRingAddr + 4, 0);
ring_dma = cp->ring_dma;
cpw32_f(RxRingAddr, ring_dma & 0xffffffff);
cpw32_f(RxRingAddr + 4, (ring_dma >> 16) >> 16);
ring_dma += sizeof(struct cp_desc) * CP_RX_RING_SIZE;
cpw32_f(TxRingAddr, ring_dma & 0xffffffff);
cpw32_f(TxRingAddr + 4, (ring_dma >> 16) >> 16);
cpw16(MultiIntr, 0);
cpw8_f(Cfg9346, Cfg9346_Lock);