8139cp: set ring address before enabling receiver

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 коммит произвёл David S. Miller
Родитель 20e2a86485
Коммит b01af4579e
1 изменённых файлов: 11 добавлений и 11 удалений

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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);