Revert "mv643xx_eth: use longer DMA bursts".
This reverts commit cd4ccf76bf
.
On the Pegasos board, we can't do DMA burst that are longer than
one cache line. For now, go back to using 32 byte DMA bursts for
all mv643xx_eth platforms -- we can switch the ARM-based platforms
back to doing long 128 byte bursts in the next development cycle.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Reported-by: Alan Curry <pacman@kosh.dhis.org>
Reported-by: Gabriel Paubert <paubert@iram.es>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
8b9d372897
commit
e0c6ef9388
1 changed files with 8 additions and 6 deletions
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@ -136,21 +136,23 @@ static char mv643xx_eth_driver_version[] = "1.4";
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/*
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* SDMA configuration register.
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*/
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#define RX_BURST_SIZE_4_64BIT (2 << 1)
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#define RX_BURST_SIZE_16_64BIT (4 << 1)
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#define BLM_RX_NO_SWAP (1 << 4)
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#define BLM_TX_NO_SWAP (1 << 5)
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#define TX_BURST_SIZE_4_64BIT (2 << 22)
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#define TX_BURST_SIZE_16_64BIT (4 << 22)
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#if defined(__BIG_ENDIAN)
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#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
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(RX_BURST_SIZE_16_64BIT | \
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TX_BURST_SIZE_16_64BIT)
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(RX_BURST_SIZE_4_64BIT | \
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TX_BURST_SIZE_4_64BIT)
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#elif defined(__LITTLE_ENDIAN)
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#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
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(RX_BURST_SIZE_16_64BIT | \
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BLM_RX_NO_SWAP | \
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BLM_TX_NO_SWAP | \
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TX_BURST_SIZE_16_64BIT)
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(RX_BURST_SIZE_4_64BIT | \
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BLM_RX_NO_SWAP | \
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BLM_TX_NO_SWAP | \
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TX_BURST_SIZE_4_64BIT)
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#else
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#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
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#endif
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