diff options
Diffstat (limited to 'drivers/net/pasemi_mac.c')
| -rw-r--r-- | drivers/net/pasemi_mac.c | 60 |
1 files changed, 33 insertions, 27 deletions
diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c index 967ff8c96b0f..31ad2b9093a7 100644 --- a/drivers/net/pasemi_mac.c +++ b/drivers/net/pasemi_mac.c @@ -243,9 +243,9 @@ static int pasemi_mac_setup_rx_resources(struct net_device *dev) PAS_DMA_RXINT_BASEU_SIZ(RX_RING_SIZE >> 3)); write_dma_reg(mac, PAS_DMA_RXINT_CFG(mac->dma_if), - PAS_DMA_RXINT_CFG_DHL(3) | - PAS_DMA_RXINT_CFG_L2 | - PAS_DMA_RXINT_CFG_LW); + PAS_DMA_RXINT_CFG_DHL(3) | PAS_DMA_RXINT_CFG_L2 | + PAS_DMA_RXINT_CFG_LW | PAS_DMA_RXINT_CFG_RBP | + PAS_DMA_RXINT_CFG_HEN); ring->next_to_fill = 0; ring->next_to_clean = 0; @@ -402,13 +402,12 @@ static void pasemi_mac_free_rx_resources(struct net_device *dev) static void pasemi_mac_replenish_rx_ring(struct net_device *dev, int limit) { struct pasemi_mac *mac = netdev_priv(dev); - int start = mac->rx->next_to_fill; - unsigned int fill, count; + int fill, count; if (limit <= 0) return; - fill = start; + fill = mac->rx->next_to_fill; for (count = 0; count < limit; count++) { struct pasemi_mac_buffer *info = &RX_RING_INFO(mac, fill); u64 *buff = &RX_BUFF(mac, fill); @@ -446,10 +445,10 @@ static void pasemi_mac_replenish_rx_ring(struct net_device *dev, int limit) wmb(); - write_dma_reg(mac, PAS_DMA_RXCHAN_INCR(mac->dma_rxch), count); write_dma_reg(mac, PAS_DMA_RXINT_INCR(mac->dma_if), count); - mac->rx->next_to_fill += count; + mac->rx->next_to_fill = (mac->rx->next_to_fill + count) & + (RX_RING_SIZE - 1); } static void pasemi_mac_restart_rx_intr(struct pasemi_mac *mac) @@ -517,15 +516,19 @@ static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit) int count; struct pasemi_mac_buffer *info; struct sk_buff *skb; - unsigned int i, len; + unsigned int len; u64 macrx; dma_addr_t dma; + int buf_index; + u64 eval; spin_lock(&mac->rx->lock); n = mac->rx->next_to_clean; - for (count = limit; count; count--) { + prefetch(RX_RING(mac, n)); + + for (count = 0; count < limit; count++) { macrx = RX_RING(mac, n); if ((macrx & XCT_MACRX_E) || @@ -537,21 +540,14 @@ static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit) info = NULL; - /* We have to scan for our skb since there's no way - * to back-map them from the descriptor, and if we - * have several receive channels then they might not - * show up in the same order as they were put on the - * interface ring. - */ + BUG_ON(!(macrx & XCT_MACRX_RR_8BRES)); - dma = (RX_RING(mac, n+1) & XCT_PTR_ADDR_M); - for (i = mac->rx->next_to_fill; - i < (mac->rx->next_to_fill + RX_RING_SIZE); - i++) { - info = &RX_RING_INFO(mac, i); - if (info->dma == dma) - break; - } + eval = (RX_RING(mac, n+1) & XCT_RXRES_8B_EVAL_M) >> + XCT_RXRES_8B_EVAL_S; + buf_index = eval-1; + + dma = (RX_RING(mac, n+2) & XCT_PTR_ADDR_M); + info = &RX_RING_INFO(mac, buf_index); skb = info->skb; @@ -600,9 +596,9 @@ static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit) /* Need to zero it out since hardware doesn't, since the * replenish loop uses it to tell when it's done. */ - RX_BUFF(mac, i) = 0; + RX_BUFF(mac, buf_index) = 0; - n += 2; + n += 4; } if (n > RX_RING_SIZE) { @@ -610,8 +606,16 @@ static int pasemi_mac_clean_rx(struct pasemi_mac *mac, int limit) write_iob_reg(mac, PAS_IOB_COM_PKTHDRCNT, 0); n &= (RX_RING_SIZE-1); } + mac->rx->next_to_clean = n; - pasemi_mac_replenish_rx_ring(mac->netdev, limit-count); + + /* Increase is in number of 16-byte entries, and since each descriptor + * with an 8BRES takes up 3x8 bytes (padded to 4x8), increase with + * count*2. + */ + write_dma_reg(mac, PAS_DMA_RXCHAN_INCR(mac->dma_rxch), count << 1); + + pasemi_mac_replenish_rx_ring(mac->netdev, count); spin_unlock(&mac->rx->lock); @@ -927,6 +931,8 @@ static int pasemi_mac_open(struct net_device *dev) pasemi_mac_replenish_rx_ring(dev, RX_RING_SIZE); + write_dma_reg(mac, PAS_DMA_RXCHAN_INCR(mac->dma_rxch), RX_RING_SIZE>>1); + flags = PAS_MAC_CFG_PCFG_S1 | PAS_MAC_CFG_PCFG_PE | PAS_MAC_CFG_PCFG_PR | PAS_MAC_CFG_PCFG_CE; |