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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2009-01-28 23:03:07 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-01 00:58:23 -0800 |
| commit | 4661e75b9d7bb12bcbe9be8bbf40ebf0845879a9 (patch) | |
| tree | 6a94e7e6ff9d3fcf99efb1556692bf3eddffd5d5 /drivers/net/fec.c | |
| parent | 6989f5122f84046ba286efe8ce8be2fec42a1b7c (diff) | |
| download | linux-3.10-4661e75b9d7bb12bcbe9be8bbf40ebf0845879a9.tar.gz linux-3.10-4661e75b9d7bb12bcbe9be8bbf40ebf0845879a9.tar.bz2 linux-3.10-4661e75b9d7bb12bcbe9be8bbf40ebf0845879a9.zip | |
fec: use dma_alloc_coherent for descriptor ring
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/fec.c')
| -rw-r--r-- | drivers/net/fec.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/net/fec.c b/drivers/net/fec.c index 1087c4da84a..46a441a9c64 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -186,6 +186,7 @@ struct fec_enet_private { /* CPM dual port RAM relative addresses. */ + dma_addr_t bd_dma; cbd_t *rx_bd_base; /* Address of Rx and Tx buffers. */ cbd_t *tx_bd_base; cbd_t *cur_rx, *cur_tx; /* The next free ring entry */ @@ -2107,7 +2108,8 @@ int __init fec_enet_init(struct net_device *dev) /* Allocate memory for buffer descriptors. */ - mem_addr = __get_free_page(GFP_KERNEL); + mem_addr = (unsigned long)dma_alloc_coherent(NULL, PAGE_SIZE, + &fep->bd_dma, GFP_KERNEL); if (mem_addr == 0) { printk("FEC: allocate descriptor memory failed?\n"); return -ENOMEM; @@ -2202,8 +2204,9 @@ int __init fec_enet_init(struct net_device *dev) /* Set receive and transmit descriptor base. */ - fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base)); - fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base)); + fecp->fec_r_des_start = fep->bd_dma; + fecp->fec_x_des_start = (unsigned long)fep->bd_dma + sizeof(cbd_t) + * RX_RING_SIZE; /* Install our interrupt handlers. This varies depending on * the architecture. @@ -2291,8 +2294,9 @@ fec_restart(struct net_device *dev, int duplex) /* Set receive and transmit descriptor base. */ - fecp->fec_r_des_start = __pa((uint)(fep->rx_bd_base)); - fecp->fec_x_des_start = __pa((uint)(fep->tx_bd_base)); + fecp->fec_r_des_start = fep->bd_dma; + fecp->fec_x_des_start = (unsigned long)fep->bd_dma + sizeof(cbd_t) + * RX_RING_SIZE; fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; fep->cur_rx = fep->rx_bd_base; |