From 83c98a8cd04dd0f848574370594886ba3bf56750 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Tue, 21 Jul 2009 09:15:49 +0000 Subject: Remove unused zero-copy code from velocity NIC driver. This code hasn't been enabled in forever. Signed-off-by: Dave Jones Signed-off-by: David S. Miller --- drivers/net/via-velocity.c | 77 +++++++--------------------------------------- 1 file changed, 11 insertions(+), 66 deletions(-) (limited to 'drivers') diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c index 42365e5f931b..4ebe2cacf50c 100644 --- a/drivers/net/via-velocity.c +++ b/drivers/net/via-velocity.c @@ -976,9 +976,6 @@ static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_devi dev->netdev_ops = &velocity_netdev_ops; dev->ethtool_ops = &velocity_ethtool_ops; -#ifdef VELOCITY_ZERO_COPY_SUPPORT - dev->features |= NETIF_F_SG; -#endif dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_VLAN_RX; @@ -1849,11 +1846,7 @@ static void velocity_free_tx_buf(struct velocity_info *vptr, struct velocity_td_ pktlen = max_t(unsigned int, skb->len, ETH_ZLEN); for (i = 0; i < tdinfo->nskb_dma; i++) { -#ifdef VELOCITY_ZERO_COPY_SUPPORT - pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], le16_to_cpu(td->tdesc1.len), PCI_DMA_TODEVICE); -#else pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], pktlen, PCI_DMA_TODEVICE); -#endif tdinfo->skb_dma[i] = 0; } } @@ -2095,13 +2088,6 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev) len = cpu_to_le16(pktlen); -#ifdef VELOCITY_ZERO_COPY_SUPPORT - if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) { - kfree_skb(skb); - return NETDEV_TX_OK; - } -#endif - spin_lock_irqsave(&vptr->lock, flags); index = vptr->tx.curr[qnum]; @@ -2111,59 +2097,18 @@ static int velocity_xmit(struct sk_buff *skb, struct net_device *dev) td_ptr->tdesc1.TCR = TCR0_TIC; td_ptr->td_buf[0].size &= ~TD_QUEUE; -#ifdef VELOCITY_ZERO_COPY_SUPPORT - if (skb_shinfo(skb)->nr_frags > 0) { - int nfrags = skb_shinfo(skb)->nr_frags; - tdinfo->skb = skb; - if (nfrags > 6) { - skb_copy_from_linear_data(skb, tdinfo->buf, skb->len); - tdinfo->skb_dma[0] = tdinfo->buf_dma; - td_ptr->tdesc0.len = len; - td_ptr->tx.buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]); - td_ptr->tx.buf[0].pa_high = 0; - td_ptr->tx.buf[0].size = len; /* queue is 0 anyway */ - tdinfo->nskb_dma = 1; - } else { - int i = 0; - tdinfo->nskb_dma = 0; - tdinfo->skb_dma[i] = pci_map_single(vptr->pdev, skb->data, - skb_headlen(skb), PCI_DMA_TODEVICE); - - td_ptr->tdesc0.len = len; - - /* FIXME: support 48bit DMA later */ - td_ptr->tx.buf[i].pa_low = cpu_to_le32(tdinfo->skb_dma); - td_ptr->tx.buf[i].pa_high = 0; - td_ptr->tx.buf[i].size = cpu_to_le16(skb_headlen(skb)); - - for (i = 0; i < nfrags; i++) { - skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - void *addr = (void *)page_address(frag->page) + frag->page_offset; - - tdinfo->skb_dma[i + 1] = pci_map_single(vptr->pdev, addr, frag->size, PCI_DMA_TODEVICE); - - td_ptr->tx.buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]); - td_ptr->tx.buf[i + 1].pa_high = 0; - td_ptr->tx.buf[i + 1].size = cpu_to_le16(frag->size); - } - tdinfo->nskb_dma = i - 1; - } + /* + * Map the linear network buffer into PCI space and + * add it to the transmit ring. + */ + tdinfo->skb = skb; + tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE); + td_ptr->tdesc0.len = len; + td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]); + td_ptr->td_buf[0].pa_high = 0; + td_ptr->td_buf[0].size = len; + tdinfo->nskb_dma = 1; - } else -#endif - { - /* - * Map the linear network buffer into PCI space and - * add it to the transmit ring. - */ - tdinfo->skb = skb; - tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE); - td_ptr->tdesc0.len = len; - td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]); - td_ptr->td_buf[0].pa_high = 0; - td_ptr->td_buf[0].size = len; - tdinfo->nskb_dma = 1; - } td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16; if (vptr->vlgrp && vlan_tx_tag_present(skb)) { -- cgit v1.2.3