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Automatic merge of /spare/repo/netdev-2.6 branch 8139cp

This commit is contained in:
2005-06-04 17:01:33 -04:00 committed by Jeff Garzik
parent 8be3de3fd8 a78d892796
commit df77cc44dc
1 changed files with 69 additions and 31 deletions
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100
drivers/net/8139cp.c
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@ -54,6 +54,7 @@
#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/compiler.h>
#include <linux/netdevice.h>
@ -91,16 +92,17 @@ KERN_INFO DRV_NAME ": 10/100 PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE
MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
MODULE_DESCRIPTION("RealTek RTL-8139C+ series 10/100 PCI Ethernet driver");
MODULE_VERSION(DRV_VERSION);
MODULE_LICENSE("GPL");
static int debug = -1;
MODULE_PARM (debug, "i");
module_param(debug, int, 0);
MODULE_PARM_DESC (debug, "8139cp: bitmapped message enable number");
/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
The RTL chips use a 64 element hash table based on the Ethernet CRC. */
static int multicast_filter_limit = 32;
MODULE_PARM (multicast_filter_limit, "i");
module_param(multicast_filter_limit, int, 0);
MODULE_PARM_DESC (multicast_filter_limit, "8139cp: maximum number of filtered multicast addresses");
#define PFX DRV_NAME ": "
@ -186,6 +188,9 @@ enum {
RingEnd = (1 << 30), /* End of descriptor ring */
FirstFrag = (1 << 29), /* First segment of a packet */
LastFrag = (1 << 28), /* Final segment of a packet */
LargeSend = (1 << 27), /* TCP Large Send Offload (TSO) */
MSSShift = 16, /* MSS value position */
MSSMask = 0xfff, /* MSS value: 11 bits */
TxError = (1 << 23), /* Tx error summary */
RxError = (1 << 20), /* Rx error summary */
IPCS = (1 << 18), /* Calculate IP checksum */
@ -312,7 +317,7 @@ struct cp_desc {
struct ring_info {
struct sk_buff *skb;
dma_addr_t mapping;
unsigned frag;
u32 len;
};
struct cp_dma_stats {
@ -394,6 +399,9 @@ struct cp_private {
static void __cp_set_rx_mode (struct net_device *dev);
static void cp_tx (struct cp_private *cp);
static void cp_clean_rings (struct cp_private *cp);
#ifdef CONFIG_NET_POLL_CONTROLLER
static void cp_poll_controller(struct net_device *dev);
#endif
static struct pci_device_id cp_pci_tbl[] = {
{ PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139,
@ -688,6 +696,19 @@ cp_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
return IRQ_HANDLED;
}
#ifdef CONFIG_NET_POLL_CONTROLLER
/*
* Polling receive - used by netconsole and other diagnostic tools
* to allow network i/o with interrupts disabled.
*/
static void cp_poll_controller(struct net_device *dev)
{
disable_irq(dev->irq);
cp_interrupt(dev->irq, dev, NULL);
enable_irq(dev->irq);
}
#endif
static void cp_tx (struct cp_private *cp)
{
unsigned tx_head = cp->tx_head;
@ -707,7 +728,7 @@ static void cp_tx (struct cp_private *cp)
BUG();
pci_unmap_single(cp->pdev, cp->tx_skb[tx_tail].mapping,
skb->len, PCI_DMA_TODEVICE);
cp->tx_skb[tx_tail].len, PCI_DMA_TODEVICE);
if (status & LastFrag) {
if (status & (TxError | TxFIFOUnder)) {
@ -749,10 +770,11 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
{
struct cp_private *cp = netdev_priv(dev);
unsigned entry;
u32 eor;
u32 eor, flags;
#if CP_VLAN_TAG_USED
u32 vlan_tag = 0;
#endif
int mss = 0;
spin_lock_irq(&cp->lock);
@ -772,6 +794,9 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
entry = cp->tx_head;
eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
if (dev->features & NETIF_F_TSO)
mss = skb_shinfo(skb)->tso_size;
if (skb_shinfo(skb)->nr_frags == 0) {
struct cp_desc *txd = &cp->tx_ring[entry];
u32 len;
@ -783,26 +808,26 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
txd->addr = cpu_to_le64(mapping);
wmb();
if (skb->ip_summed == CHECKSUM_HW) {
flags = eor | len | DescOwn | FirstFrag | LastFrag;
if (mss)
flags |= LargeSend | ((mss & MSSMask) << MSSShift);
else if (skb->ip_summed == CHECKSUM_HW) {
const struct iphdr *ip = skb->nh.iph;
if (ip->protocol == IPPROTO_TCP)
txd->opts1 = cpu_to_le32(eor | len | DescOwn |
FirstFrag | LastFrag |
IPCS | TCPCS);
flags |= IPCS | TCPCS;
else if (ip->protocol == IPPROTO_UDP)
txd->opts1 = cpu_to_le32(eor | len | DescOwn |
FirstFrag | LastFrag |
IPCS | UDPCS);
flags |= IPCS | UDPCS;
else
BUG();
} else
txd->opts1 = cpu_to_le32(eor | len | DescOwn |
FirstFrag | LastFrag);
WARN_ON(1); /* we need a WARN() */
}
txd->opts1 = cpu_to_le32(flags);
wmb();
cp->tx_skb[entry].skb = skb;
cp->tx_skb[entry].mapping = mapping;
cp->tx_skb[entry].frag = 0;
cp->tx_skb[entry].len = len;
entry = NEXT_TX(entry);
} else {
struct cp_desc *txd;
@ -820,7 +845,7 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
first_len, PCI_DMA_TODEVICE);
cp->tx_skb[entry].skb = skb;
cp->tx_skb[entry].mapping = first_mapping;
cp->tx_skb[entry].frag = 1;
cp->tx_skb[entry].len = first_len;
entry = NEXT_TX(entry);
for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
@ -836,16 +861,19 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
len, PCI_DMA_TODEVICE);
eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
if (skb->ip_summed == CHECKSUM_HW) {
ctrl = eor | len | DescOwn | IPCS;
ctrl = eor | len | DescOwn;
if (mss)
ctrl |= LargeSend |
((mss & MSSMask) << MSSShift);
else if (skb->ip_summed == CHECKSUM_HW) {
if (ip->protocol == IPPROTO_TCP)
ctrl |= TCPCS;
ctrl |= IPCS | TCPCS;
else if (ip->protocol == IPPROTO_UDP)
ctrl |= UDPCS;
ctrl |= IPCS | UDPCS;
else
BUG();
} else
ctrl = eor | len | DescOwn;
}
if (frag == skb_shinfo(skb)->nr_frags - 1)
ctrl |= LastFrag;
@ -860,7 +888,7 @@ static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
cp->tx_skb[entry].skb = skb;
cp->tx_skb[entry].mapping = mapping;
cp->tx_skb[entry].frag = frag + 2;
cp->tx_skb[entry].len = len;
entry = NEXT_TX(entry);
}
@ -1074,7 +1102,6 @@ static int cp_refill_rx (struct cp_private *cp)
cp->rx_skb[i].mapping = pci_map_single(cp->pdev,
skb->tail, cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
cp->rx_skb[i].skb = skb;
cp->rx_skb[i].frag = 0;
cp->rx_ring[i].opts2 = 0;
cp->rx_ring[i].addr = cpu_to_le64(cp->rx_skb[i].mapping);
@ -1126,9 +1153,6 @@ static void cp_clean_rings (struct cp_private *cp)
{
unsigned i;
memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
for (i = 0; i < CP_RX_RING_SIZE; i++) {
if (cp->rx_skb[i].skb) {
pci_unmap_single(cp->pdev, cp->rx_skb[i].mapping,
@ -1140,13 +1164,18 @@ static void cp_clean_rings (struct cp_private *cp)
for (i = 0; i < CP_TX_RING_SIZE; i++) {
if (cp->tx_skb[i].skb) {
struct sk_buff *skb = cp->tx_skb[i].skb;
pci_unmap_single(cp->pdev, cp->tx_skb[i].mapping,
skb->len, PCI_DMA_TODEVICE);
dev_kfree_skb(skb);
cp->tx_skb[i].len, PCI_DMA_TODEVICE);
if (le32_to_cpu(cp->tx_ring[i].opts1) & LastFrag)
dev_kfree_skb(skb);
cp->net_stats.tx_dropped++;
}
}
memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
memset(&cp->rx_skb, 0, sizeof(struct ring_info) * CP_RX_RING_SIZE);
memset(&cp->tx_skb, 0, sizeof(struct ring_info) * CP_TX_RING_SIZE);
}
@ -1538,6 +1567,8 @@ static struct ethtool_ops cp_ethtool_ops = {
.set_tx_csum = ethtool_op_set_tx_csum, /* local! */
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_tso = ethtool_op_get_tso,
.set_tso = ethtool_op_set_tso,
.get_regs = cp_get_regs,
.get_wol = cp_get_wol,
.set_wol = cp_set_wol,
@ -1749,6 +1780,9 @@ static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
dev->get_stats = cp_get_stats;
dev->do_ioctl = cp_ioctl;
dev->poll = cp_rx_poll;
#ifdef CONFIG_NET_POLL_CONTROLLER
dev->poll_controller = cp_poll_controller;
#endif
dev->weight = 16; /* arbitrary? from NAPI_HOWTO.txt. */
#ifdef BROKEN
dev->change_mtu = cp_change_mtu;
@ -1768,6 +1802,10 @@ static int cp_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
if (pci_using_dac)
dev->features |= NETIF_F_HIGHDMA;
#if 0 /* disabled by default until verified */
dev->features |= NETIF_F_TSO;
#endif
dev->irq = pdev->irq;
rc = register_netdev(dev);