diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/ring_mode.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/ring_mode.c | 57 |
1 files changed, 33 insertions, 24 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c index fb8377da168..650a4be6bce 100644 --- a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c +++ b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c @@ -30,13 +30,18 @@ static unsigned int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum) { - struct stmmac_priv *priv = (struct stmmac_priv *) p; + struct stmmac_priv *priv = (struct stmmac_priv *)p; unsigned int txsize = priv->dma_tx_size; unsigned int entry = priv->cur_tx % txsize; - struct dma_desc *desc = priv->dma_tx + entry; + struct dma_desc *desc; unsigned int nopaged_len = skb_headlen(skb); unsigned int bmax, len; + if (priv->extend_desc) + desc = (struct dma_desc *)(priv->dma_etx + entry); + else + desc = priv->dma_tx + entry; + if (priv->plat->enh_desc) bmax = BUF_SIZE_8KiB; else @@ -48,24 +53,34 @@ static unsigned int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum) desc->des2 = dma_map_single(priv->device, skb->data, bmax, DMA_TO_DEVICE); + priv->tx_skbuff_dma[entry] = desc->des2; desc->des3 = desc->des2 + BUF_SIZE_4KiB; - priv->hw->desc->prepare_tx_desc(desc, 1, bmax, - csum); - + priv->hw->desc->prepare_tx_desc(desc, 1, bmax, csum, + STMMAC_RING_MODE); + wmb(); + priv->tx_skbuff[entry] = NULL; entry = (++priv->cur_tx) % txsize; - desc = priv->dma_tx + entry; + + if (priv->extend_desc) + desc = (struct dma_desc *)(priv->dma_etx + entry); + else + desc = priv->dma_tx + entry; desc->des2 = dma_map_single(priv->device, skb->data + bmax, len, DMA_TO_DEVICE); + priv->tx_skbuff_dma[entry] = desc->des2; desc->des3 = desc->des2 + BUF_SIZE_4KiB; - priv->hw->desc->prepare_tx_desc(desc, 0, len, csum); + priv->hw->desc->prepare_tx_desc(desc, 0, len, csum, + STMMAC_RING_MODE); + wmb(); priv->hw->desc->set_tx_owner(desc); - priv->tx_skbuff[entry] = NULL; } else { desc->des2 = dma_map_single(priv->device, skb->data, nopaged_len, DMA_TO_DEVICE); + priv->tx_skbuff_dma[entry] = desc->des2; desc->des3 = desc->des2 + BUF_SIZE_4KiB; - priv->hw->desc->prepare_tx_desc(desc, 1, nopaged_len, csum); + priv->hw->desc->prepare_tx_desc(desc, 1, nopaged_len, csum, + STMMAC_RING_MODE); } return entry; @@ -81,27 +96,22 @@ static unsigned int stmmac_is_jumbo_frm(int len, int enh_desc) return ret; } -static void stmmac_refill_desc3(int bfsize, struct dma_desc *p) +static void stmmac_refill_desc3(void *priv_ptr, struct dma_desc *p) { - /* Fill DES3 in case of RING mode */ - if (bfsize >= BUF_SIZE_8KiB) - p->des3 = p->des2 + BUF_SIZE_8KiB; -} + struct stmmac_priv *priv = (struct stmmac_priv *)priv_ptr; -/* In ring mode we need to fill the desc3 because it is used - * as buffer */ -static void stmmac_init_desc3(int des3_as_data_buf, struct dma_desc *p) -{ - if (unlikely(des3_as_data_buf)) + /* Fill DES3 in case of RING mode */ + if (priv->dma_buf_sz >= BUF_SIZE_8KiB) p->des3 = p->des2 + BUF_SIZE_8KiB; } -static void stmmac_init_dma_chain(struct dma_desc *des, dma_addr_t phy_addr, - unsigned int size) +/* In ring mode we need to fill the desc3 because it is used as buffer */ +static void stmmac_init_desc3(struct dma_desc *p) { + p->des3 = p->des2 + BUF_SIZE_8KiB; } -static void stmmac_clean_desc3(struct dma_desc *p) +static void stmmac_clean_desc3(void *priv_ptr, struct dma_desc *p) { if (unlikely(p->des3)) p->des3 = 0; @@ -115,12 +125,11 @@ static int stmmac_set_16kib_bfsize(int mtu) return ret; } -const struct stmmac_ring_mode_ops ring_mode_ops = { +const struct stmmac_mode_ops ring_mode_ops = { .is_jumbo_frm = stmmac_is_jumbo_frm, .jumbo_frm = stmmac_jumbo_frm, .refill_desc3 = stmmac_refill_desc3, .init_desc3 = stmmac_init_desc3, - .init_dma_chain = stmmac_init_dma_chain, .clean_desc3 = stmmac_clean_desc3, .set_16kib_bfsize = stmmac_set_16kib_bfsize, }; |