diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/sun8i_emac.c | 33 |
1 files changed, 14 insertions, 19 deletions
diff --git a/drivers/net/sun8i_emac.c b/drivers/net/sun8i_emac.c index 45130e1ba1..c005b98ae8 100644 --- a/drivers/net/sun8i_emac.c +++ b/drivers/net/sun8i_emac.c @@ -376,6 +376,14 @@ static int sun8i_phy_init(struct emac_eth_dev *priv, void *dev) return 0; } +#define cache_clean_descriptor(desc) \ + flush_dcache_range((uintptr_t)(desc), \ + (uintptr_t)(desc) + sizeof(struct emac_dma_desc)) + +#define cache_inv_descriptor(desc) \ + invalidate_dcache_range((uintptr_t)(desc), \ + (uintptr_t)(desc) + sizeof(struct emac_dma_desc)) + static void rx_descs_init(struct emac_eth_dev *priv) { struct emac_dma_desc *desc_table_p = &priv->rx_chain[0]; @@ -432,9 +440,7 @@ static void tx_descs_init(struct emac_eth_dev *priv) desc_p->next = (uintptr_t)&desc_table_p[0]; /* Flush the first TX buffer descriptor we will tell the MAC about. */ - flush_dcache_range((uintptr_t)priv->tx_chain, - (uintptr_t)priv->tx_chain + - sizeof(priv->tx_chain[0])); + cache_clean_descriptor(desc_table_p); writel((uintptr_t)&desc_table_p[0], priv->mac_reg + EMAC_TX_DMA_DESC); priv->tx_currdescnum = 0; @@ -570,15 +576,11 @@ static int sun8i_emac_eth_recv(struct udevice *dev, int flags, uchar **packetp) struct emac_dma_desc *desc_p = &priv->rx_chain[desc_num]; int length = -EAGAIN; int good_packet = 1; - uintptr_t desc_start = (uintptr_t)desc_p; - uintptr_t desc_end = desc_start + - roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN); - ulong data_start = (uintptr_t)desc_p->buf_addr; ulong data_end; /* Invalidate entire buffer descriptor */ - invalidate_dcache_range(desc_start, desc_end); + cache_inv_descriptor(desc_p); status = desc_p->status; @@ -616,10 +618,6 @@ static int sun8i_emac_eth_send(struct udevice *dev, void *packet, int length) struct emac_eth_dev *priv = dev_get_priv(dev); u32 desc_num = priv->tx_currdescnum; struct emac_dma_desc *desc_p = &priv->tx_chain[desc_num]; - uintptr_t desc_start = (uintptr_t)desc_p; - uintptr_t desc_end = desc_start + - roundup(sizeof(*desc_p), ARCH_DMA_MINALIGN); - uintptr_t data_start = (uintptr_t)desc_p->buf_addr; uintptr_t data_end = data_start + roundup(length, ARCH_DMA_MINALIGN); @@ -635,8 +633,8 @@ static int sun8i_emac_eth_send(struct udevice *dev, void *packet, int length) desc_p->ctl_size |= EMAC_DESC_LAST_DESC | EMAC_DESC_FIRST_DESC; desc_p->status = EMAC_DESC_OWN_DMA; - /*Descriptors st and status field has changed, so FLUSH it */ - flush_dcache_range(desc_start, desc_end); + /* make sure the MAC reads the actual data from DRAM */ + cache_clean_descriptor(desc_p); /* Move to next Descriptor and wrap around */ if (++desc_num >= CONFIG_TX_DESCR_NUM) @@ -757,15 +755,12 @@ static int sun8i_eth_free_pkt(struct udevice *dev, uchar *packet, struct emac_eth_dev *priv = dev_get_priv(dev); u32 desc_num = priv->rx_currdescnum; struct emac_dma_desc *desc_p = &priv->rx_chain[desc_num]; - uintptr_t desc_start = (uintptr_t)desc_p; - uintptr_t desc_end = desc_start + - roundup(sizeof(u32), ARCH_DMA_MINALIGN); - /* Make the current descriptor valid again */ + /* give the current descriptor back to the MAC */ desc_p->status |= EMAC_DESC_OWN_DMA; /* Flush Status field of descriptor */ - flush_dcache_range(desc_start, desc_end); + cache_clean_descriptor(desc_p); /* Move to next desc and wrap-around condition. */ if (++desc_num >= CONFIG_RX_DESCR_NUM) |