leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fec: use dma_alloc_coherent for descriptor ring

Browse Source 
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>
This commit is contained in:
Sascha Hauer 2009-01-28 23:03:07 +00:00 committed by David S. Miller
parent 6989f5122f
commit 4661e75b9d
1 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/fec.c
View File

@ -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;