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| author | Joachim Foerster <joachim.foerster@missinglinkelectronics.com> | 2011-10-17 05:24:44 +0000 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2011-10-26 21:27:37 +0200 |
| commit | b962ac794a26ff80269755c13c3e4fee65c3809e (patch) | |
| tree | a4eee141d77981f255b5cf2c3a3fa5c8e85b34d9 /drivers/net/altera_tse.c | |
| parent | 29095f1a5cfdbc2e40178f6fbf9267e0df11f6f5 (diff) | |
| download | u-boot-b962ac794a26ff80269755c13c3e4fee65c3809e.tar.gz u-boot-b962ac794a26ff80269755c13c3e4fee65c3809e.tar.bz2 u-boot-b962ac794a26ff80269755c13c3e4fee65c3809e.zip | |
altera_tse: Add support for dedicated descriptor memory
Signed-off-by: Joachim Foerster <joachim.foerster@missinglinkelectronics.com>
Diffstat (limited to 'drivers/net/altera_tse.c')
| -rw-r--r-- | drivers/net/altera_tse.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/net/altera_tse.c b/drivers/net/altera_tse.c index 47b57616d9..afd8e3126c 100644 --- a/drivers/net/altera_tse.c +++ b/drivers/net/altera_tse.c @@ -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); |