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FEC: Properly align address over the buffers for cache ops 

Align the address that's to be invalidated/flushed properly.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Benoit Thebaudeau <benoit.thebaudeau@advans>
Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
Marek Vasut 2012-08-26 10:19:21 +00:00 committed by Joe Hershberger
parent e2a66e6097
commit efe24d2e17
1 changed files with 8 additions and 6 deletions
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14
drivers/net/fec_mxc.c
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@ -695,7 +695,7 @@ static void fec_halt(struct eth_device *dev)
static int fec_send(struct eth_device *dev, void *packet, int length)
{
unsigned int status;
uint32_t size;
uint32_t size, end;
uint32_t addr;
/*
@ -722,8 +722,9 @@ static int fec_send(struct eth_device *dev, void *packet, int length)
#endif
addr = (uint32_t)packet;
size = roundup(length, ARCH_DMA_MINALIGN);
flush_dcache_range(addr, addr + size);
end = roundup(addr + length, ARCH_DMA_MINALIGN);
addr &= ~(ARCH_DMA_MINALIGN - 1);
flush_dcache_range(addr, end);
writew(length, &fec->tbd_base[fec->tbd_index].data_length);
writel(addr, &fec->tbd_base[fec->tbd_index].data_pointer);
@ -790,7 +791,7 @@ static int fec_recv(struct eth_device *dev)
int frame_length, len = 0;
struct nbuf *frame;
uint16_t bd_status;
uint32_t addr, size;
uint32_t addr, size, end;
int i;
uchar buff[FEC_MAX_PKT_SIZE] __aligned(ARCH_DMA_MINALIGN);
@ -854,8 +855,9 @@ static int fec_recv(struct eth_device *dev)
* Invalidate data cache over the buffer
*/
addr = (uint32_t)frame;
size = roundup(frame_length, ARCH_DMA_MINALIGN);
invalidate_dcache_range(addr, addr + size);
end = roundup(addr + frame_length, ARCH_DMA_MINALIGN);
addr &= ~(ARCH_DMA_MINALIGN - 1);
invalidate_dcache_range(addr, end);
/*
* Fill the buffer and pass it to upper layers