Commit 4661e75b authored by Sascha Hauer's avatar Sascha Hauer Committed by David S. Miller
Browse files

fec: use dma_alloc_coherent for descriptor ring


Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Acked-by: default avatarGreg Ungerer <gerg@uclinux.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6989f512
......@@ -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;
......
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