From: David S. Miller Date: Thu, 11 Sep 2008 11:52:51 +0000 (-0700) Subject: tg3: Use SKB DMA helper functions for TX. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=90079ce89aa65e17f36ac2b09110720c51d874f4;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git tg3: Use SKB DMA helper functions for TX. Signed-off-by: David S. Miller --- diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 71d2c5cfdad9..355e8bcf6fed 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -3861,10 +3861,7 @@ static void tg3_tx(struct tg3 *tp) return; } - pci_unmap_single(tp->pdev, - pci_unmap_addr(ri, mapping), - skb_headlen(skb), - PCI_DMA_TODEVICE); + skb_dma_unmap(&tp->pdev->dev, skb, DMA_TO_DEVICE); ri->skb = NULL; @@ -3874,12 +3871,6 @@ static void tg3_tx(struct tg3 *tp) ri = &tp->tx_buffers[sw_idx]; if (unlikely(ri->skb != NULL || sw_idx == hw_idx)) tx_bug = 1; - - pci_unmap_page(tp->pdev, - pci_unmap_addr(ri, mapping), - skb_shinfo(skb)->frags[i].size, - PCI_DMA_TODEVICE); - sw_idx = NEXT_TX(sw_idx); } @@ -4633,12 +4624,13 @@ static int tigon3_dma_hwbug_workaround(struct tg3 *tp, struct sk_buff *skb, } else { /* New SKB is guaranteed to be linear. */ entry = *start; - new_addr = pci_map_single(tp->pdev, new_skb->data, new_skb->len, - PCI_DMA_TODEVICE); + ret = skb_dma_map(&tp->pdev->dev, new_skb, DMA_TO_DEVICE); + new_addr = skb_shinfo(new_skb)->dma_maps[0]; + /* Make sure new skb does not cross any 4G boundaries. * Drop the packet if it does. */ - if (tg3_4g_overflow_test(new_addr, new_skb->len)) { + if (ret || tg3_4g_overflow_test(new_addr, new_skb->len)) { ret = -1; dev_kfree_skb(new_skb); new_skb = NULL; @@ -4652,18 +4644,8 @@ static int tigon3_dma_hwbug_workaround(struct tg3 *tp, struct sk_buff *skb, /* Now clean up the sw ring entries. */ i = 0; while (entry != last_plus_one) { - int len; - - if (i == 0) - len = skb_headlen(skb); - else - len = skb_shinfo(skb)->frags[i-1].size; - pci_unmap_single(tp->pdev, - pci_unmap_addr(&tp->tx_buffers[entry], mapping), - len, PCI_DMA_TODEVICE); if (i == 0) { tp->tx_buffers[entry].skb = new_skb; - pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, new_addr); } else { tp->tx_buffers[entry].skb = NULL; } @@ -4671,6 +4653,7 @@ static int tigon3_dma_hwbug_workaround(struct tg3 *tp, struct sk_buff *skb, i++; } + skb_dma_unmap(&tp->pdev->dev, skb, DMA_TO_DEVICE); dev_kfree_skb(skb); return ret; @@ -4705,8 +4688,9 @@ static void tg3_set_txd(struct tg3 *tp, int entry, static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct tg3 *tp = netdev_priv(dev); - dma_addr_t mapping; u32 len, entry, base_flags, mss; + struct skb_shared_info *sp; + dma_addr_t mapping; len = skb_headlen(skb); @@ -4765,11 +4749,16 @@ static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev) (vlan_tx_tag_get(skb) << 16)); #endif - /* Queue skb data, a.k.a. the main skb fragment. */ - mapping = pci_map_single(tp->pdev, skb->data, len, PCI_DMA_TODEVICE); + if (skb_dma_map(&tp->pdev->dev, skb, DMA_TO_DEVICE)) { + dev_kfree_skb(skb); + goto out_unlock; + } + + sp = skb_shinfo(skb); + + mapping = sp->dma_maps[0]; tp->tx_buffers[entry].skb = skb; - pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping); tg3_set_txd(tp, entry, mapping, len, base_flags, (skb_shinfo(skb)->nr_frags == 0) | (mss << 1)); @@ -4785,13 +4774,8 @@ static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev) skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; len = frag->size; - mapping = pci_map_page(tp->pdev, - frag->page, - frag->page_offset, - len, PCI_DMA_TODEVICE); - + mapping = sp->dma_maps[i + 1]; tp->tx_buffers[entry].skb = NULL; - pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping); tg3_set_txd(tp, entry, mapping, len, base_flags, (i == last) | (mss << 1)); @@ -4859,9 +4843,10 @@ tg3_tso_bug_end: static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev) { struct tg3 *tp = netdev_priv(dev); - dma_addr_t mapping; u32 len, entry, base_flags, mss; + struct skb_shared_info *sp; int would_hit_hwbug; + dma_addr_t mapping; len = skb_headlen(skb); @@ -4942,11 +4927,16 @@ static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev) (vlan_tx_tag_get(skb) << 16)); #endif - /* Queue skb data, a.k.a. the main skb fragment. */ - mapping = pci_map_single(tp->pdev, skb->data, len, PCI_DMA_TODEVICE); + if (skb_dma_map(&tp->pdev->dev, skb, DMA_TO_DEVICE)) { + dev_kfree_skb(skb); + goto out_unlock; + } + + sp = skb_shinfo(skb); + + mapping = sp->dma_maps[0]; tp->tx_buffers[entry].skb = skb; - pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping); would_hit_hwbug = 0; @@ -4969,13 +4959,9 @@ static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev) skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; len = frag->size; - mapping = pci_map_page(tp->pdev, - frag->page, - frag->page_offset, - len, PCI_DMA_TODEVICE); + mapping = sp->dma_maps[i + 1]; tp->tx_buffers[entry].skb = NULL; - pci_unmap_addr_set(&tp->tx_buffers[entry], mapping, mapping); if (tg3_4g_overflow_test(mapping, len)) would_hit_hwbug = 1; @@ -5128,7 +5114,6 @@ static void tg3_free_rings(struct tg3 *tp) for (i = 0; i < TG3_TX_RING_SIZE; ) { struct tx_ring_info *txp; struct sk_buff *skb; - int j; txp = &tp->tx_buffers[i]; skb = txp->skb; @@ -5138,22 +5123,11 @@ static void tg3_free_rings(struct tg3 *tp) continue; } - pci_unmap_single(tp->pdev, - pci_unmap_addr(txp, mapping), - skb_headlen(skb), - PCI_DMA_TODEVICE); - txp->skb = NULL; + skb_dma_unmap(&tp->pdev->dev, skb, DMA_TO_DEVICE); - i++; + txp->skb = NULL; - for (j = 0; j < skb_shinfo(skb)->nr_frags; j++) { - txp = &tp->tx_buffers[i & (TG3_TX_RING_SIZE - 1)]; - pci_unmap_page(tp->pdev, - pci_unmap_addr(txp, mapping), - skb_shinfo(skb)->frags[j].size, - PCI_DMA_TODEVICE); - i++; - } + i += skb_shinfo(skb)->nr_frags + 1; dev_kfree_skb_any(skb); } diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index f5b8cab8d4b5..6c7b5e303dbb 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -2197,7 +2197,6 @@ struct ring_info { struct tx_ring_info { struct sk_buff *skb; - DECLARE_PCI_UNMAP_ADDR(mapping) u32 prev_vlan_tag; };