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openwrt-xburst/target/linux/ubicom32/files/drivers/net/ubi32-eth.c
kaloz 250089c5e9 [ubicom32]: add 2.6.32 support
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19823 3c298f89-4303-0410-b956-a3cf2f4a3e73
2010-02-23 10:43:53 +00:00

767 lines
20 KiB
C

/*
* drivers/net/ubi32-eth.c
* Ubicom32 ethernet TIO interface driver.
*
* (C) Copyright 2009, Ubicom, Inc.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port is free software: you can redistribute
* it and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 2 of the
* License, or (at your option) any later version.
*
* The Ubicom32 Linux Kernel Port is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
/*
* ubi32_eth.c
* Ethernet driver for Ip5k/Ip7K
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/in.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/mii.h>
#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/skbuff.h>
#include <asm/checksum.h>
#include <asm/ip5000.h>
#include <asm/devtree.h>
#include <asm/system.h>
#define UBICOM32_USE_NAPI /* define this to use NAPI instead of tasklet */
//#define UBICOM32_USE_POLLING /* define this to use polling instead of interrupt */
#include "ubi32-eth.h"
/*
* TODO:
* mac address from flash
* multicast filter
* ethtool support
* sysfs support
* skb->nrfrag support
* ioctl
* monitor phy status
*/
extern int ubi32_ocm_skbuf_max, ubi32_ocm_skbuf, ubi32_ddr_skbuf;
static const char *eth_if_name[UBI32_ETH_NUM_OF_DEVICES] =
{"eth_lan", "eth_wan"};
static struct net_device *ubi32_eth_devices[UBI32_ETH_NUM_OF_DEVICES] =
{NULL, NULL};
static u8_t mac_addr[UBI32_ETH_NUM_OF_DEVICES][ETH_ALEN] = {
{0x00, 0x03, 0x64, 'l', 'a', 'n'},
{0x00, 0x03, 0x64, 'w', 'a', 'n'}};
#if (defined(CONFIG_ZONE_DMA) && defined(CONFIG_UBICOM32_OCM_FOR_SKB))
static inline struct sk_buff *ubi32_alloc_skb_ocm(struct net_device *dev, unsigned int length)
{
return __dev_alloc_skb(length, GFP_ATOMIC | __GFP_NOWARN | __GFP_NORETRY | GFP_DMA);
}
#endif
static inline struct sk_buff *ubi32_alloc_skb(struct net_device *dev, unsigned int length)
{
return __dev_alloc_skb(length, GFP_ATOMIC | __GFP_NOWARN);
}
static void ubi32_eth_vp_rxtx_enable(struct net_device *dev)
{
struct ubi32_eth_private *priv = netdev_priv(dev);
priv->regs->command = UBI32_ETH_VP_CMD_RX_ENABLE | UBI32_ETH_VP_CMD_TX_ENABLE;
priv->regs->int_mask = (UBI32_ETH_VP_INT_RX | UBI32_ETH_VP_INT_TX);
ubicom32_set_interrupt(priv->vp_int_bit);
}
static void ubi32_eth_vp_rxtx_stop(struct net_device *dev)
{
struct ubi32_eth_private *priv = netdev_priv(dev);
priv->regs->command = 0;
priv->regs->int_mask = 0;
ubicom32_set_interrupt(priv->vp_int_bit);
/* Wait for graceful shutdown */
while (priv->regs->status & (UBI32_ETH_VP_STATUS_RX_STATE | UBI32_ETH_VP_STATUS_TX_STATE));
}
/*
* ubi32_eth_tx_done()
*/
static int ubi32_eth_tx_done(struct net_device *dev)
{
struct ubi32_eth_private *priv;
struct sk_buff *skb;
volatile void *pdata;
struct ubi32_eth_dma_desc *desc;
u32_t count = 0;
priv = netdev_priv(dev);
priv->regs->int_status &= ~UBI32_ETH_VP_INT_TX;
while (priv->tx_tail != priv->regs->tx_out) {
pdata = priv->regs->tx_dma_ring[priv->tx_tail];
BUG_ON(pdata == NULL);
skb = container_of((void *)pdata, struct sk_buff, cb);
desc = (struct ubi32_eth_dma_desc *)pdata;
if (unlikely(!(desc->status & UBI32_ETH_VP_TX_OK))) {
dev->stats.tx_errors++;
} else {
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
}
dev_kfree_skb_any(skb);
priv->regs->tx_dma_ring[priv->tx_tail] = NULL;
priv->tx_tail = (priv->tx_tail + 1) & TX_DMA_RING_MASK;
count++;
}
if (unlikely(priv->regs->status & UBI32_ETH_VP_STATUS_TX_Q_FULL)) {
spin_lock(&priv->lock);
if (priv->regs->status & UBI32_ETH_VP_STATUS_TX_Q_FULL) {
priv->regs->status &= ~UBI32_ETH_VP_STATUS_TX_Q_FULL;
netif_wake_queue(dev);
}
spin_unlock(&priv->lock);
}
return count;
}
/*
* ubi32_eth_receive()
* To avoid locking overhead, this is called only
* by tasklet when not using NAPI, or
* by NAPI poll when using NAPI.
* return number of frames processed
*/
static int ubi32_eth_receive(struct net_device *dev, int quota)
{
struct ubi32_eth_private *priv = netdev_priv(dev);
unsigned short rx_in = priv->regs->rx_in;
struct sk_buff *skb;
struct ubi32_eth_dma_desc *desc = NULL;
volatile void *pdata;
int extra_reserve_adj;
int extra_alloc = UBI32_ETH_RESERVE_SPACE + UBI32_ETH_TRASHED_MEMORY;
int replenish_cnt, count = 0;
int replenish_max = RX_DMA_MAX_QUEUE_SIZE;
#if (defined(CONFIG_ZONE_DMA) && defined(CONFIG_UBICOM32_OCM_FOR_SKB))
if (likely(dev == ubi32_eth_devices[0]))
replenish_max = min(ubi32_ocm_skbuf_max, RX_DMA_MAX_QUEUE_SIZE);;
#endif
if (unlikely(rx_in == priv->regs->rx_out))
priv->vp_stats.rx_q_full_cnt++;
priv->regs->int_status &= ~UBI32_ETH_VP_INT_RX;
while (priv->rx_tail != priv->regs->rx_out) {
if (unlikely(count == quota)) {
/* There is still frame pending to be processed */
priv->vp_stats.rx_throttle++;
break;
}
pdata = priv->regs->rx_dma_ring[priv->rx_tail];
BUG_ON(pdata == NULL);
desc = (struct ubi32_eth_dma_desc *)pdata;
skb = container_of((void *)pdata, struct sk_buff, cb);
count++;
priv->regs->rx_dma_ring[priv->rx_tail] = NULL;
priv->rx_tail = ((priv->rx_tail + 1) & RX_DMA_RING_MASK);
/*
* Check only RX_OK bit here.
* The rest of status word is used as timestamp
*/
if (unlikely(!(desc->status & UBI32_ETH_VP_RX_OK))) {
dev->stats.rx_errors++;
dev_kfree_skb_any(skb);
continue;
}
skb_put(skb, desc->data_len);
skb->dev = dev;
skb->protocol = eth_type_trans(skb, dev);
skb->ip_summed = CHECKSUM_NONE;
dev->stats.rx_bytes += skb->len;
dev->stats.rx_packets++;
#ifndef UBICOM32_USE_NAPI
netif_rx(skb);
#else
netif_receive_skb(skb);
#endif
}
/* fill in more descripor for VP*/
replenish_cnt = replenish_max -
((RX_DMA_RING_SIZE + rx_in - priv->rx_tail) & RX_DMA_RING_MASK);
if (replenish_cnt > 0) {
#if (defined(CONFIG_ZONE_DMA) && defined(CONFIG_UBICOM32_OCM_FOR_SKB))
/*
* black magic for perforamnce:
* Try to allocate skb from OCM only for first Ethernet I/F.
* Also limit number of RX buffers to 21 due to limited OCM.
*/
if (likely(dev == ubi32_eth_devices[0])) {
do {
skb = ubi32_alloc_skb_ocm(dev, RX_BUF_SIZE + extra_alloc);
if (!skb) {
break;
}
/* set up dma descriptor */
ubi32_ocm_skbuf++;
desc = (struct ubi32_eth_dma_desc *)skb->cb;
extra_reserve_adj =
((u32)skb->data + UBI32_ETH_RESERVE_SPACE + ETH_HLEN) &
(CACHE_LINE_SIZE - 1);
skb_reserve(skb, UBI32_ETH_RESERVE_SPACE - extra_reserve_adj);
desc->data_pointer = skb->data;
desc->buffer_len = RX_BUF_SIZE + UBI32_ETH_TRASHED_MEMORY;
desc->data_len = 0;
desc->status = 0;
priv->regs->rx_dma_ring[rx_in] = desc;
rx_in = (rx_in + 1) & RX_DMA_RING_MASK;
} while (--replenish_cnt > 0);
}
#endif
while (replenish_cnt-- > 0) {
skb = ubi32_alloc_skb(dev, RX_BUF_SIZE + extra_alloc);
if (!skb) {
priv->vp_stats.rx_alloc_err++;
break;
}
/* set up dma descriptor */
ubi32_ddr_skbuf++;
desc = (struct ubi32_eth_dma_desc *)skb->cb;
extra_reserve_adj =
((u32)skb->data + UBI32_ETH_RESERVE_SPACE + ETH_HLEN) &
(CACHE_LINE_SIZE - 1);
skb_reserve(skb, UBI32_ETH_RESERVE_SPACE - extra_reserve_adj);
desc->data_pointer = skb->data;
desc->buffer_len = RX_BUF_SIZE + UBI32_ETH_TRASHED_MEMORY;
desc->data_len = 0;
desc->status = 0;
priv->regs->rx_dma_ring[rx_in] = desc;
rx_in = (rx_in + 1) & RX_DMA_RING_MASK;
}
wmb();
priv->regs->rx_in = rx_in;
ubicom32_set_interrupt(priv->vp_int_bit);
}
if (likely(count > 0)) {
dev->last_rx = jiffies;
}
return count;
}
#ifdef UBICOM32_USE_NAPI
static int ubi32_eth_napi_poll(struct napi_struct *napi, int budget)
{
struct ubi32_eth_private *priv = container_of(napi, struct ubi32_eth_private, napi);
struct net_device *dev = priv->dev;
u32_t count;
if (priv->tx_tail != priv->regs->tx_out) {
ubi32_eth_tx_done(dev);
}
count = ubi32_eth_receive(dev, budget);
if (count < budget) {
napi_complete(napi);
priv->regs->int_mask |= (UBI32_ETH_VP_INT_RX | UBI32_ETH_VP_INT_TX);
if ((priv->rx_tail != priv->regs->rx_out) || (priv->tx_tail != priv->regs->tx_out)) {
if (napi_reschedule(napi)) {
priv->regs->int_mask = 0;
}
}
}
return count;
}
#else
static void ubi32_eth_do_tasklet(unsigned long arg)
{
struct net_device *dev = (struct net_device *)arg;
struct ubi32_eth_private *priv = netdev_priv(dev);
if (priv->tx_tail != priv->regs->tx_out) {
ubi32_eth_tx_done(dev);
}
/* always call receive to process new RX frame as well as replenish RX buffers */
ubi32_eth_receive(dev, UBI32_RX_BOUND);
priv->regs->int_mask |= (UBI32_ETH_VP_INT_RX | UBI32_ETH_VP_INT_TX);
if ((priv->rx_tail != priv->regs->rx_out) || (priv->tx_tail != priv->regs->tx_out)) {
priv->regs->int_mask = 0;
tasklet_schedule(&priv->tsk);
}
}
#endif
#if defined(UBICOM32_USE_POLLING)
static struct timer_list eth_poll_timer;
static void ubi32_eth_poll(unsigned long arg)
{
struct net_device *dev;
struct ubi32_eth_private *priv;
int i;
for (i = 0; i < UBI32_ETH_NUM_OF_DEVICES; i++) {
dev = ubi32_eth_devices[i];
if (dev && (dev->flags & IFF_UP)) {
priv = netdev_priv(dev);
#ifdef UBICOM32_USE_NAPI
napi_schedule(&priv->napi);
#else
tasklet_schedule(&priv->tsk);
#endif
}
}
eth_poll_timer.expires = jiffies + 2;
add_timer(&eth_poll_timer);
}
#else
static irqreturn_t ubi32_eth_interrupt(int irq, void *dev_id)
{
struct ubi32_eth_private *priv;
struct net_device *dev = (struct net_device *)dev_id;
BUG_ON(irq != dev->irq);
priv = netdev_priv(dev);
if (unlikely(!(priv->regs->int_status & priv->regs->int_mask))) {
return IRQ_NONE;
}
/*
* Disable port interrupt
*/
#ifdef UBICOM32_USE_NAPI
if (napi_schedule_prep(&priv->napi)) {
priv->regs->int_mask = 0;
__napi_schedule(&priv->napi);
}
#else
priv->regs->int_mask = 0;
tasklet_schedule(&priv->tsk);
#endif
return IRQ_HANDLED;
}
#endif
/*
* ubi32_eth_open
*/
static int ubi32_eth_open(struct net_device *dev)
{
struct ubi32_eth_private *priv = netdev_priv(dev);
int err;
printk(KERN_INFO "eth open %s\n",dev->name);
#ifndef UBICOM32_USE_POLLING
/* request_region() */
err = request_irq(dev->irq, ubi32_eth_interrupt, IRQF_DISABLED, dev->name, dev);
if (err) {
printk(KERN_WARNING "fail to request_irq %d\n",err);
return -ENODEV;
}
#endif
#ifdef UBICOM32_USE_NAPI
napi_enable(&priv->napi);
#else
tasklet_init(&priv->tsk, ubi32_eth_do_tasklet, (unsigned long)dev);
#endif
/* call receive to supply RX buffers */
ubi32_eth_receive(dev, RX_DMA_MAX_QUEUE_SIZE);
/* check phy status and call netif_carrier_on */
ubi32_eth_vp_rxtx_enable(dev);
netif_start_queue(dev);
return 0;
}
static int ubi32_eth_close(struct net_device *dev)
{
struct ubi32_eth_private *priv = netdev_priv(dev);
volatile void *pdata;
struct sk_buff *skb;
#ifndef UBICOM32_USE_POLLING
free_irq(dev->irq, dev);
#endif
netif_stop_queue(dev); /* can't transmit any more */
#ifdef UBICOM32_USE_NAPI
napi_disable(&priv->napi);
#else
tasklet_kill(&priv->tsk);
#endif
ubi32_eth_vp_rxtx_stop(dev);
/*
* RX clean up
*/
while (priv->rx_tail != priv->regs->rx_in) {
pdata = priv->regs->rx_dma_ring[priv->rx_tail];
skb = container_of((void *)pdata, struct sk_buff, cb);
priv->regs->rx_dma_ring[priv->rx_tail] = NULL;
dev_kfree_skb_any(skb);
priv->rx_tail = ((priv->rx_tail + 1) & RX_DMA_RING_MASK);
}
priv->regs->rx_in = 0;
priv->regs->rx_out = priv->regs->rx_in;
priv->rx_tail = priv->regs->rx_in;
/*
* TX clean up
*/
BUG_ON(priv->regs->tx_out != priv->regs->tx_in);
ubi32_eth_tx_done(dev);
BUG_ON(priv->tx_tail != priv->regs->tx_in);
priv->regs->tx_in = 0;
priv->regs->tx_out = priv->regs->tx_in;
priv->tx_tail = priv->regs->tx_in;
return 0;
}
/*
* ubi32_eth_set_config
*/
static int ubi32_eth_set_config(struct net_device *dev, struct ifmap *map)
{
/* if must to down to config it */
printk(KERN_INFO "set_config %x\n", dev->flags);
if (dev->flags & IFF_UP)
return -EBUSY;
/* I/O and IRQ can not be changed */
if (map->base_addr != dev->base_addr) {
printk(KERN_WARNING "%s: Can't change I/O address\n", dev->name);
return -EOPNOTSUPP;
}
#ifndef UBICOM32_USE_POLLING
if (map->irq != dev->irq) {
printk(KERN_WARNING "%s: Can't change IRQ\n", dev->name);
return -EOPNOTSUPP;
}
#endif
/* ignore other fields */
return 0;
}
static int ubi32_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ubi32_eth_private *priv = netdev_priv(dev);
struct ubi32_eth_dma_desc *desc = NULL;
unsigned short space, tx_in;
tx_in = priv->regs->tx_in;
dev->trans_start = jiffies; /* save the timestamp */
space = TX_DMA_RING_MASK - ((TX_DMA_RING_SIZE + tx_in - priv->tx_tail) & TX_DMA_RING_MASK);
if (unlikely(space == 0)) {
if (!(priv->regs->status & UBI32_ETH_VP_STATUS_TX_Q_FULL)) {
spin_lock(&priv->lock);
if (!(priv->regs->status & UBI32_ETH_VP_STATUS_TX_Q_FULL)) {
priv->regs->status |= UBI32_ETH_VP_STATUS_TX_Q_FULL;
priv->vp_stats.tx_q_full_cnt++;
netif_stop_queue(dev);
}
spin_unlock(&priv->lock);
}
/* give both HW and this driver an extra trigger */
priv->regs->int_mask |= UBI32_ETH_VP_INT_TX;
#ifndef UBICOM32_USE_POLLING
ubicom32_set_interrupt(dev->irq);
#endif
ubicom32_set_interrupt(priv->vp_int_bit);
return NETDEV_TX_BUSY;
}
/*still have room */
desc = (struct ubi32_eth_dma_desc *)skb->cb;
desc->data_pointer = skb->data;
desc->data_len = skb->len;
priv->regs->tx_dma_ring[tx_in] = desc;
tx_in = ((tx_in + 1) & TX_DMA_RING_MASK);
wmb();
priv->regs->tx_in = tx_in;
/* kick the HRT */
ubicom32_set_interrupt(priv->vp_int_bit);
return NETDEV_TX_OK;
}
/*
* Deal with a transmit timeout.
*/
static void ubi32_eth_tx_timeout (struct net_device *dev)
{
struct ubi32_eth_private *priv = netdev_priv(dev);
dev->stats.tx_errors++;
priv->regs->int_mask |= UBI32_ETH_VP_INT_TX;
#ifndef UBICOM32_USE_POLLING
ubicom32_set_interrupt(dev->irq);
#endif
ubicom32_set_interrupt(priv->vp_int_bit);
}
static int ubi32_eth_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct ubi32_eth_private *priv = netdev_priv(dev);
struct mii_ioctl_data *data = if_mii(rq);
printk(KERN_INFO "ioctl %s, %d\n", dev->name, cmd);
switch (cmd) {
case SIOCGMIIPHY:
data->phy_id = 0;
break;
case SIOCGMIIREG:
if ((data->reg_num & 0x1F) == MII_BMCR) {
/* Make up MII control register value from what we know */
data->val_out = 0x0000
| ((priv->regs->status & UBI32_ETH_VP_STATUS_DUPLEX)
? BMCR_FULLDPLX : 0)
| ((priv->regs->status & UBI32_ETH_VP_STATUS_SPEED100)
? BMCR_SPEED100 : 0)
| ((priv->regs->status & UBI32_ETH_VP_STATUS_SPEED1000)
? BMCR_SPEED1000 : 0);
} else if ((data->reg_num & 0x1F) == MII_BMSR) {
/* Make up MII status register value from what we know */
data->val_out =
(BMSR_100FULL|BMSR_100HALF|BMSR_10FULL|BMSR_10HALF)
| ((priv->regs->status & UBI32_ETH_VP_STATUS_LINK)
? BMSR_LSTATUS : 0);
} else {
return -EIO;
}
break;
case SIOCSMIIREG:
return -EOPNOTSUPP;
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
/*
* Return statistics to the caller
*/
static struct net_device_stats *ubi32_eth_get_stats(struct net_device *dev)
{
return &dev->stats;
}
static int ubi32_eth_change_mtu(struct net_device *dev, int new_mtu)
{
struct ubi32_eth_private *priv = netdev_priv(dev);
unsigned long flags;
if ((new_mtu < 68) || (new_mtu > 1500))
return -EINVAL;
spin_lock_irqsave(&priv->lock, flags);
dev->mtu = new_mtu;
spin_unlock_irqrestore(&priv->lock, flags);
printk(KERN_INFO "set mtu to %d", new_mtu);
return 0;
}
/*
* ubi32_eth_cleanup: unload the module
*/
void ubi32_eth_cleanup(void)
{
struct ubi32_eth_private *priv;
struct net_device *dev;
int i;
for (i = 0; i < UBI32_ETH_NUM_OF_DEVICES; i++) {
dev = ubi32_eth_devices[i];
if (dev) {
priv = netdev_priv(dev);
kfree(priv->regs->tx_dma_ring);
unregister_netdev(dev);
free_netdev(dev);
ubi32_eth_devices[i] = NULL;
}
}
}
static const struct net_device_ops ubi32_netdev_ops = {
.ndo_open = ubi32_eth_open,
.ndo_stop = ubi32_eth_close,
.ndo_start_xmit = ubi32_eth_start_xmit,
.ndo_tx_timeout = ubi32_eth_tx_timeout,
.ndo_do_ioctl = ubi32_eth_ioctl,
.ndo_change_mtu = ubi32_eth_change_mtu,
.ndo_set_config = ubi32_eth_set_config,
.ndo_get_stats = ubi32_eth_get_stats,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
};
int ubi32_eth_init_module(void)
{
struct ethtionode *eth_node;
struct net_device *dev;
struct ubi32_eth_private *priv;
int i, err;
/*
* Device allocation.
*/
err = 0;
for (i = 0; i < UBI32_ETH_NUM_OF_DEVICES; i++) {
/*
* See if the eth_vp is in the device tree.
*/
eth_node = (struct ethtionode *)devtree_find_node(eth_if_name[i]);
if (!eth_node) {
printk(KERN_INFO "%s does not exist\n", eth_if_name[i]);
continue;
}
eth_node->tx_dma_ring = (struct ubi32_eth_dma_desc **)kmalloc(
sizeof(struct ubi32_eth_dma_desc *) *
(TX_DMA_RING_SIZE + RX_DMA_RING_SIZE),
GFP_ATOMIC | __GFP_NOWARN | __GFP_NORETRY | GFP_DMA);
if (eth_node->tx_dma_ring == NULL) {
eth_node->tx_dma_ring = (struct ubi32_eth_dma_desc **)kmalloc(
sizeof(struct ubi32_eth_dma_desc *) *
(TX_DMA_RING_SIZE + RX_DMA_RING_SIZE), GFP_KERNEL);
printk(KERN_INFO "fail to allocate from OCM\n");
}
if (!eth_node->tx_dma_ring) {
err = -ENOMEM;
break;
}
eth_node->rx_dma_ring = eth_node->tx_dma_ring + TX_DMA_RING_SIZE;
eth_node->tx_sz = TX_DMA_RING_SIZE - 1;
eth_node->rx_sz = RX_DMA_RING_SIZE - 1;
dev = alloc_etherdev(sizeof(struct ubi32_eth_private));
if (!dev) {
kfree(eth_node->tx_dma_ring);
err = -ENOMEM;
break;
}
priv = netdev_priv(dev);
priv->dev = dev;
/*
* This just fill in some default Ubicom MAC address
*/
memcpy(dev->dev_addr, mac_addr[i], ETH_ALEN);
memset(dev->broadcast, 0xff, ETH_ALEN);
priv->regs = eth_node;
priv->regs->command = 0;
priv->regs->int_mask = 0;
priv->regs->int_status = 0;
priv->regs->tx_out = 0;
priv->regs->rx_out = 0;
priv->regs->tx_in = 0;
priv->regs->rx_in = 0;
priv->rx_tail = 0;
priv->tx_tail = 0;
priv->vp_int_bit = eth_node->dn.sendirq;
dev->irq = eth_node->dn.recvirq;
spin_lock_init(&priv->lock);
dev->netdev_ops = &ubi32_netdev_ops;
dev->watchdog_timeo = UBI32_ETH_VP_TX_TIMEOUT;
#ifdef UBICOM32_USE_NAPI
netif_napi_add(dev, &priv->napi, ubi32_eth_napi_poll, UBI32_ETH_NAPI_WEIGHT);
#endif
err = register_netdev(dev);
if (err) {
printk(KERN_WARNING "Failed to register netdev %s\n", eth_if_name[i]);
//release_region();
free_netdev(dev);
kfree(eth_node->tx_dma_ring);
break;
}
ubi32_eth_devices[i] = dev;
printk(KERN_INFO "%s vp_base:0x%p, tio_int:%d irq:%d feature:0x%lx\n",
dev->name, priv->regs, eth_node->dn.sendirq, dev->irq, dev->features);
}
if (err) {
ubi32_eth_cleanup();
return err;
}
if (!ubi32_eth_devices[0] && !ubi32_eth_devices[1]) {
return -ENODEV;
}
#if defined(UBICOM32_USE_POLLING)
init_timer(&eth_poll_timer);
eth_poll_timer.function = ubi32_eth_poll;
eth_poll_timer.data = (unsigned long)0;
eth_poll_timer.expires = jiffies + 2;
add_timer(&eth_poll_timer);
#endif
return 0;
}
module_init(ubi32_eth_init_module);
module_exit(ubi32_eth_cleanup);
MODULE_AUTHOR("Kan Yan, Greg Ren");
MODULE_LICENSE("GPL");