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altera_tse: Add support for dedicated descriptor memory

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Signed-off-by: Joachim Foerster <joachim.foerster@missinglinkelectronics.com>
This commit is contained in:
Joachim Foerster
2011-10-17 05:24:44 +00:00
committed by Wolfgang Denk
parent 29095f1a5c
commit b962ac794a
3 changed files with 27 additions and 5 deletions
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19
drivers/net/altera_tse.c
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@@ -882,7 +882,8 @@ static int tse_eth_init(struct eth_device *dev, bd_t * bd)
/* TSE init code */
int altera_tse_initialize(u8 dev_num, int mac_base,
int sgdma_rx_base, int sgdma_tx_base)
int sgdma_rx_base, int sgdma_tx_base,
u32 sgdma_desc_base, u32 sgdma_desc_size)
{
struct altera_tse_priv *priv;
struct eth_device *dev;
@@ -903,8 +904,20 @@ int altera_tse_initialize(u8 dev_num, int mac_base,
free(dev);
return 0;
}
tx_desc = dma_alloc_coherent(sizeof(*tx_desc) * (3 + PKTBUFSRX),
&dma_handle);
if (sgdma_desc_size) {
if (sgdma_desc_size < (sizeof(*tx_desc) * (3 + PKTBUFSRX))) {
printf("ALTERA_TSE-%hu: "
"descriptor memory is too small\n", dev_num);
free(priv);
free(dev);
return 0;
}
tx_desc = (struct alt_sgdma_descriptor *)sgdma_desc_base;
} else {
tx_desc = dma_alloc_coherent(sizeof(*tx_desc) * (3 + PKTBUFSRX),
&dma_handle);
}
rx_desc = tx_desc + 2;
debug("tx desc: address = 0x%x\n", (unsigned int)tx_desc);
debug("rx desc: address = 0x%x\n", (unsigned int)rx_desc);