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net: designware: convert to streaming DMA ops 

Move to the common streaming DMA ops in order to get rid of
the direct usage of the ARM MMU functions for the cache
maintenance.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Lucas Stach 2015-03-05 22:50:11 +01:00 committed by Sascha Hauer
parent 4c64171ad9
commit 5213d76f47
1 changed files with 11 additions and 8 deletions
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19
drivers/net/designware.c
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@ -27,7 +27,6 @@
#include <io.h>
#include <net.h>
#include <of_net.h>
#include <asm/mmu.h>
#include <net/designware.h>
#include <linux/phy.h>
#include <linux/err.h>
@ -197,8 +196,8 @@ static void rx_descs_init(struct eth_device *dev)
else
desc_p->dmamac_cntl |= DESC_RXCTRL_RXCHAIN;
dma_inv_range((unsigned long)desc_p->dmamac_addr,
(unsigned long)desc_p->dmamac_addr + CONFIG_ETH_BUFSIZE);
dma_sync_single_for_cpu((unsigned long)desc_p->dmamac_addr,
CONFIG_ETH_BUFSIZE, DMA_FROM_DEVICE);
desc_p->txrx_status = DESC_RXSTS_OWNBYDMA;
}
@ -302,8 +301,8 @@ static int dwc_ether_send(struct eth_device *dev, void *packet, int length)
}
memcpy((void *)desc_p->dmamac_addr, packet, length);
dma_flush_range((unsigned long)desc_p->dmamac_addr,
(unsigned long)desc_p->dmamac_addr + length);
dma_sync_single_for_device((unsigned long)desc_p->dmamac_addr, length,
DMA_TO_DEVICE);
if (priv->enh_desc) {
desc_p->txrx_status |= DESC_ENH_TXSTS_TXFIRST | DESC_ENH_TXSTS_TXLAST;
@ -328,6 +327,9 @@ static int dwc_ether_send(struct eth_device *dev, void *packet, int length)
/* Start the transmission */
writel(POLL_DATA, &dma_p->txpolldemand);
dma_sync_single_for_cpu((unsigned long)desc_p->dmamac_addr, length,
DMA_TO_DEVICE);
return 0;
}
@ -351,10 +353,11 @@ static int dwc_ether_rx(struct eth_device *dev)
* Make the current descriptor valid again and go to
* the next one
*/
dma_inv_range((unsigned long)desc_p->dmamac_addr,
(unsigned long)desc_p->dmamac_addr + length);
dma_sync_single_for_cpu((unsigned long)desc_p->dmamac_addr, length,
DMA_FROM_DEVICE);
net_receive(dev, desc_p->dmamac_addr, length);
dma_sync_single_for_device((unsigned long)desc_p->dmamac_addr, length,
DMA_FROM_DEVICE);
desc_p->txrx_status |= DESC_RXSTS_OWNBYDMA;