This patch contains a few updates to the AT91RM9200 Ethernet driver.
The changes are:
1. Remove the global 'at91_dev' variable.
2. The global 'check_timer' moved into the private data structure.
3. Rather use dev_alloc_skb() instead of alloc_skb().
4. It is not necessary to adjust skb->len manually.
5. The I/O base-address and IRQ are no longer hard-coded, but are passed
via platform_device resources.
Signed-off-by: Andrew Victor <[EMAIL PROTECTED]>
diff -urN linux-2.6.18.orig/drivers/net/arm/at91_ether.c
linux-2.6.18/drivers/net/arm/at91_ether.c
--- linux-2.6.18.orig/drivers/net/arm/at91_ether.c Thu Sep 28 12:12:10 2006
+++ linux-2.6.18/drivers/net/arm/at91_ether.c Thu Sep 28 12:21:40 2006
@@ -41,9 +41,6 @@
#define DRV_NAME "at91_ether"
#define DRV_VERSION "1.0"
-static struct net_device *at91_dev;
-
-static struct timer_list check_timer;
#define LINK_POLL_INTERVAL (HZ)
/* ..................................................................... */
@@ -252,8 +249,8 @@
* PHY doesn't have an IRQ pin (RTL8201, DP83847, AC101L),
* or board does not have it connected.
*/
- check_timer.expires = jiffies + LINK_POLL_INTERVAL;
- add_timer(&check_timer);
+ lp->check_timer.expires = jiffies + LINK_POLL_INTERVAL;
+ add_timer(&lp->check_timer);
return;
}
@@ -300,7 +297,7 @@
irq_number = lp->board_data.phy_irq_pin;
if (!irq_number) {
- del_timer_sync(&check_timer);
+ del_timer_sync(&lp->check_timer);
return;
}
@@ -362,13 +359,14 @@
static void at91ether_check_link(unsigned long dev_id)
{
struct net_device *dev = (struct net_device *) dev_id;
+ struct at91_private *lp = (struct at91_private *) dev->priv;
enable_mdi();
update_linkspeed(dev, 1);
disable_mdi();
- check_timer.expires = jiffies + LINK_POLL_INTERVAL;
- add_timer(&check_timer);
+ lp->check_timer.expires = jiffies + LINK_POLL_INTERVAL;
+ add_timer(&lp->check_timer);
}
/* ......................... ADDRESS MANAGEMENT ........................ */
@@ -857,14 +855,13 @@
while (dlist->descriptors[lp->rxBuffIndex].addr & EMAC_DESC_DONE) {
p_recv = dlist->recv_buf[lp->rxBuffIndex];
pktlen = dlist->descriptors[lp->rxBuffIndex].size & 0x7ff;
/* Length of frame including FCS */
- skb = alloc_skb(pktlen + 2, GFP_ATOMIC);
+ skb = dev_alloc_skb(pktlen + 2);
if (skb != NULL) {
skb_reserve(skb, 2);
memcpy(skb_put(skb, pktlen), p_recv, pktlen);
skb->dev = dev;
skb->protocol = eth_type_trans(skb, dev);
- skb->len = pktlen;
dev->last_rx = jiffies;
lp->stats.rx_bytes += pktlen;
netif_rx(skb);
@@ -937,17 +934,22 @@
struct net_device *dev;
struct at91_private *lp;
unsigned int val;
- int res;
-
- if (at91_dev) /* already initialized */
- return 0;
+ struct resource *res;
+ int ret;
dev = alloc_etherdev(sizeof(struct at91_private));
if (!dev)
return -ENOMEM;
- dev->base_addr = AT91_VA_BASE_EMAC;
- dev->irq = AT91RM9200_ID_EMAC;
+ /* Get I/O base address and IRQ */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ free_netdev(dev);
+ return -ENODEV;
+ }
+ dev->base_addr = res->start;
+ dev->irq = platform_get_irq(pdev, 0);
+
SET_MODULE_OWNER(dev);
/* Install the interrupt handler */
@@ -1017,14 +1019,13 @@
lp->phy_address = phy_address; /* MDI address of PHY */
/* Register the network interface */
- res = register_netdev(dev);
- if (res) {
+ ret = register_netdev(dev);
+ if (ret) {
free_irq(dev->irq, dev);
free_netdev(dev);
dma_free_coherent(NULL, sizeof(struct recv_desc_bufs),
lp->dlist, (dma_addr_t)lp->dlist_phys);
- return res;
+ return ret;
}
- at91_dev = dev;
/* Determine current link speed */
spin_lock_irq(&lp->lock);
@@ -1036,9 +1037,9 @@
/* If board has no PHY IRQ, use a timer to poll the PHY */
if (!lp->board_data.phy_irq_pin) {
- init_timer(&check_timer);
- check_timer.data = (unsigned long)dev;
- check_timer.function = at91ether_check_link;
+ init_timer(&lp->check_timer);
+ lp->check_timer.data = (unsigned long)dev;
+ lp->check_timer.function = at91ether_check_link;
}
/* Display ethernet banner */
@@ -1115,15 +1116,16 @@
static int __devexit at91ether_remove(struct platform_device *pdev)
{
- struct at91_private *lp = (struct at91_private *) at91_dev->priv;
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct at91_private *lp = (struct at91_private *) dev->priv;
- unregister_netdev(at91_dev);
- free_irq(at91_dev->irq, at91_dev);
+ unregister_netdev(dev);
+ free_irq(dev->irq, dev);
dma_free_coherent(NULL, sizeof(struct recv_desc_bufs), lp->dlist,
(dma_addr_t)lp->dlist_phys);
clk_put(lp->ether_clk);
- free_netdev(at91_dev);
- at91_dev = NULL;
+ platform_set_drvdata(pdev, NULL);
+ free_netdev(dev);
return 0;
}
@@ -1131,8 +1133,8 @@
static int at91ether_suspend(struct platform_device *pdev, pm_message_t mesg)
{
- struct at91_private *lp = (struct at91_private *) at91_dev->priv;
struct net_device *net_dev = platform_get_drvdata(pdev);
+ struct at91_private *lp = (struct at91_private *) net_dev->priv;
int phy_irq = lp->board_data.phy_irq_pin;
if (netif_running(net_dev)) {
@@ -1149,8 +1151,8 @@
static int at91ether_resume(struct platform_device *pdev)
{
- struct at91_private *lp = (struct at91_private *) at91_dev->priv;
struct net_device *net_dev = platform_get_drvdata(pdev);
+ struct at91_private *lp = (struct at91_private *) net_dev->priv;
int phy_irq = lp->board_data.phy_irq_pin;
if (netif_running(net_dev)) {
diff -urN linux-2.6.18.orig/drivers/net/arm/at91_ether.h
linux-2.6.18/drivers/net/arm/at91_ether.h
--- linux-2.6.18.orig/drivers/net/arm/at91_ether.h Thu Sep 28 12:10:51 2006
+++ linux-2.6.18/drivers/net/arm/at91_ether.h Thu Sep 28 12:21:40 2006
@@ -87,6 +87,7 @@
spinlock_t lock; /* lock for MDI interface */
short phy_media; /* media interface type */
unsigned short phy_address; /* 5-bit MDI address of PHY
(0..31) */
+ struct timer_list check_timer; /* Poll link status */
/* Transmit */
struct sk_buff *skb; /* holds skb until xmit
interrupt completes */
-
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