[PATCH] sky2: big endian
Fix support for big endian platforms like PPC. Still not sure about VLAN acceleration (does it need swapping)? Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Stephen Hemminger
Jeff Garzik
parent
b89165f2b7
commit
f65b138ca9
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@ -827,7 +827,7 @@ static void rx_set_checksum(struct sky2_port *sky2)
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struct sky2_rx_le *le;
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le = sky2_next_rx(sky2);
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le->addr = (ETH_HLEN << 16) | ETH_HLEN;
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le->addr = cpu_to_le32((ETH_HLEN << 16) | ETH_HLEN);
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le->ctrl = 0;
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le->opcode = OP_TCPSTART | HW_OWNER;
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@ -1245,7 +1245,7 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
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/* Send high bits if changed or crosses boundary */
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if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
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le = get_tx_le(sky2);
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le->tx.addr = cpu_to_le32(addr64);
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le->addr = cpu_to_le32(addr64);
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le->ctrl = 0;
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le->opcode = OP_ADDR64 | HW_OWNER;
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sky2->tx_addr64 = high32(mapping + len);
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@ -1260,8 +1260,7 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
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if (mss != sky2->tx_last_mss) {
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le = get_tx_le(sky2);
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le->tx.tso.size = cpu_to_le16(mss);
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le->tx.tso.rsvd = 0;
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le->addr = cpu_to_le32(mss);
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le->opcode = OP_LRGLEN | HW_OWNER;
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le->ctrl = 0;
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sky2->tx_last_mss = mss;
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@ -1274,7 +1273,7 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
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if (sky2->vlgrp && vlan_tx_tag_present(skb)) {
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if (!le) {
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le = get_tx_le(sky2);
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le->tx.addr = 0;
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le->addr = 0;
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le->opcode = OP_VLAN|HW_OWNER;
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le->ctrl = 0;
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} else
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@ -1286,20 +1285,21 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
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/* Handle TCP checksum offload */
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if (skb->ip_summed == CHECKSUM_HW) {
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u16 hdr = skb->h.raw - skb->data;
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u16 offset = hdr + skb->csum;
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unsigned offset = skb->h.raw - skb->data;
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u32 tcpsum;
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tcpsum = offset << 16; /* sum start */
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tcpsum |= offset + skb->csum; /* sum write */
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ctrl = CALSUM | WR_SUM | INIT_SUM | LOCK_SUM;
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if (skb->nh.iph->protocol == IPPROTO_UDP)
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ctrl |= UDPTCP;
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if (hdr != sky2->tx_csum_start || offset != sky2->tx_csum_offset) {
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sky2->tx_csum_start = hdr;
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sky2->tx_csum_offset = offset;
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if (tcpsum != sky2->tx_tcpsum) {
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sky2->tx_tcpsum = tcpsum;
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le = get_tx_le(sky2);
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le->tx.csum.start = cpu_to_le16(hdr);
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le->tx.csum.offset = cpu_to_le16(offset);
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le->addr = cpu_to_le32(tcpsum);
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le->length = 0; /* initial checksum value */
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le->ctrl = 1; /* one packet */
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le->opcode = OP_TCPLISW | HW_OWNER;
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@ -1307,7 +1307,7 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
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}
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le = get_tx_le(sky2);
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le->tx.addr = cpu_to_le32((u32) mapping);
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le->addr = cpu_to_le32((u32) mapping);
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le->length = cpu_to_le16(len);
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le->ctrl = ctrl;
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le->opcode = mss ? (OP_LARGESEND | HW_OWNER) : (OP_PACKET | HW_OWNER);
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@ -1325,14 +1325,14 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
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addr64 = high32(mapping);
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if (addr64 != sky2->tx_addr64) {
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le = get_tx_le(sky2);
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le->tx.addr = cpu_to_le32(addr64);
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le->addr = cpu_to_le32(addr64);
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le->ctrl = 0;
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le->opcode = OP_ADDR64 | HW_OWNER;
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sky2->tx_addr64 = addr64;
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}
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le = get_tx_le(sky2);
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le->tx.addr = cpu_to_le32((u32) mapping);
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le->addr = cpu_to_le32((u32) mapping);
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le->length = cpu_to_le16(frag->size);
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le->ctrl = ctrl;
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le->opcode = OP_BUFFER | HW_OWNER;
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@ -1938,8 +1938,8 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do)
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dev = hw->dev[le->link];
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sky2 = netdev_priv(dev);
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length = le->length;
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status = le->status;
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length = le16_to_cpu(le->length);
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status = le32_to_cpu(le->status);
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switch (le->opcode & ~HW_OWNER) {
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case OP_RXSTAT:
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@ -1983,7 +1983,7 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do)
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case OP_RXCHKS:
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skb = sky2->rx_ring[sky2->rx_next].skb;
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skb->ip_summed = CHECKSUM_HW;
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skb->csum = le16_to_cpu(status);
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skb->csum = status & 0xffff;
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break;
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case OP_TXINDEXLE:
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@ -3286,12 +3286,13 @@ static int __devinit sky2_probe(struct pci_dev *pdev,
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hw->pm_cap = pm_cap;
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#ifdef __BIG_ENDIAN
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/* byte swap descriptors in hardware */
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/* The sk98lin vendor driver uses hardware byte swapping but
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* this driver uses software swapping.
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*/
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{
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u32 reg;
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reg = sky2_pci_read32(hw, PCI_DEV_REG2);
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reg |= PCI_REV_DESC;
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reg &= ~PCI_REV_DESC;
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sky2_pci_write32(hw, PCI_DEV_REG2, reg);
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}
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#endif
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@ -1791,21 +1791,9 @@ enum {
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OP_TXINDEXLE = 0x68,
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};
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/* Yukon 2 hardware interface
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* Not tested on big endian
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*/
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/* Yukon 2 hardware interface */
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struct sky2_tx_le {
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union {
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__le32 addr;
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struct {
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__le16 offset;
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__le16 start;
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} csum __attribute((packed));
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struct {
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__le16 size;
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__le16 rsvd;
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} tso __attribute((packed));
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} tx;
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__le32 addr;
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__le16 length; /* also vlan tag or checksum start */
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u8 ctrl;
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u8 opcode;
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@ -1851,8 +1839,7 @@ struct sky2_port {
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u32 tx_addr64;
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u16 tx_pending;
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u16 tx_last_mss;
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u16 tx_csum_start;
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u16 tx_csum_offset;
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u32 tx_tcpsum;
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struct ring_info *rx_ring ____cacheline_aligned_in_smp;
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struct sky2_rx_le *rx_le;
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