From: Fabio Estevam fabio.estevam@freescale.com
mx6solox has a requirement for 64 bytes alignment for RX DMA transfer.
Adjust it accordingly.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- drivers/net/fec_mxc.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-)
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c index 4cefda4..df42b3c 100644 --- a/drivers/net/fec_mxc.c +++ b/drivers/net/fec_mxc.c @@ -28,6 +28,8 @@ DECLARE_GLOBAL_DATA_PTR; */ #define FEC_XFER_TIMEOUT 5000
+#define ARCH_DMA_MINALIGN_MX6SX 64 + #ifndef CONFIG_MII #error "CONFIG_MII has to be defined!" #endif @@ -281,12 +283,19 @@ static void fec_rbd_init(struct fec_priv *fec, int count, int dsize) uint32_t size; uint8_t *data; int i; + int dma_rx_align; + +#ifdef CONFIG_MX6SX + dma_rx_align = ARCH_DMA_MINALIGN_MX6SX; +#else + dma_rx_align = ARCH_DMA_MINALIGN; +#endif
/* * Reload the RX descriptors with default values and wipe * the RX buffers. */ - size = roundup(dsize, ARCH_DMA_MINALIGN); + size = roundup(dsize, dma_rx_align); for (i = 0; i < count; i++) { data = (uint8_t *)fec->rbd_base[i].data_pointer; memset(data, 0, dsize); @@ -863,6 +872,7 @@ static int fec_alloc_descs(struct fec_priv *fec) unsigned int size; int i; uint8_t *data; + int dma_rx_align;
/* Allocate TX descriptors. */ size = roundup(2 * sizeof(struct fec_bd), ARCH_DMA_MINALIGN); @@ -881,9 +891,14 @@ static int fec_alloc_descs(struct fec_priv *fec) /* Allocate RX buffers. */
/* Maximum RX buffer size. */ - size = roundup(FEC_MAX_PKT_SIZE, ARCH_DMA_MINALIGN); +#ifdef CONFIG_MX6SX + dma_rx_align = ARCH_DMA_MINALIGN_MX6SX; +#else + dma_rx_align = ARCH_DMA_MINALIGN; +#endif + size = roundup(FEC_MAX_PKT_SIZE, dma_rx_align); for (i = 0; i < FEC_RBD_NUM; i++) { - data = memalign(ARCH_DMA_MINALIGN, size); + data = memalign(dma_rx_align, size); if (!data) { printf("%s: error allocating rxbuf %d\n", __func__, i); goto err_ring;