p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net: pxa168_eth: rework the MAC address setup 

This patch rework the way the MAC address is retrieved. The MAC address
can now, in addition to being random, be set in the device tree or
retrieved from the Ethernet controller MAC address registers. The
probing function will try to get a MAC address in the following order:
- From the device tree.
- From the Ethernet controller MAC address registers.
- Generate a random one.

This patch also adds a function to read the MAC address from the
Ethernet Controller registers.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Antoine Ténart 2014-09-30 16:28:12 +02:00 committed by David S. Miller
parent 39830689ef
commit 78b9b2c4cd
1 changed files with 30 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/net/ethernet/marvell/pxa168_eth.c
View File

@ -35,6 +35,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_net.h>
#include <linux/phy.h>
#include <linux/platform_device.h>
#include <linux/pxa168_eth.h>
@ -606,6 +607,21 @@ static void pxa168_eth_set_rx_mode(struct net_device *dev)
update_hash_table_mac_address(pep, NULL, ha->addr);
}
static void pxa168_eth_get_mac_address(struct net_device *dev,
unsigned char *addr)
{
struct pxa168_eth_private *pep = netdev_priv(dev);
unsigned int mac_h = rdl(pep, MAC_ADDR_HIGH);
unsigned int mac_l = rdl(pep, MAC_ADDR_LOW);
addr[0] = (mac_h >> 24) & 0xff;
addr[1] = (mac_h >> 16) & 0xff;
addr[2] = (mac_h >> 8) & 0xff;
addr[3] = mac_h & 0xff;
addr[4] = (mac_l >> 8) & 0xff;
addr[5] = mac_l & 0xff;
}
static int pxa168_eth_set_mac_address(struct net_device *dev, void *addr)
{
struct sockaddr *sa = addr;
@ -1467,6 +1483,7 @@ static int pxa168_eth_probe(struct platform_device *pdev)
struct resource *res;
struct clk *clk;
struct device_node *np;
const unsigned char *mac_addr = NULL;
int err;
printk(KERN_NOTICE "PXA168 10/100 Ethernet Driver\n");
@ -1508,8 +1525,19 @@ static int pxa168_eth_probe(struct platform_device *pdev)
INIT_WORK(&pep->tx_timeout_task, pxa168_eth_tx_timeout_task);
dev_info(&pdev->dev, "Using random mac address\n");
eth_hw_addr_random(dev);
if (pdev->dev.of_node)
mac_addr = of_get_mac_address(pdev->dev.of_node);
if (mac_addr && is_valid_ether_addr(mac_addr)) {
ether_addr_copy(dev->dev_addr, mac_addr);
} else {
/* try reading the mac address, if set by the bootloader */
pxa168_eth_get_mac_address(dev, dev->dev_addr);
if (!is_valid_ether_addr(dev->dev_addr)) {
dev_info(&pdev->dev, "Using random mac address\n");
eth_hw_addr_random(dev);
}
}
pep->rx_ring_size = NUM_RX_DESCS;
pep->tx_ring_size = NUM_TX_DESCS;