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net/fec: add mac field into platform data and consolidate fec_get_mac 

Add mac field into fec_platform_data and consolidate function
fec_get_mac to get mac address in following order.

 1) module parameter via kernel command line fec.macaddr=0x00,0x04,...
 2) from flash in case of CONFIG_M5272 or fec_platform_data mac
    field for others, which typically have mac stored in fuse
 3) fec mac address registers set by bootloader

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shawn Guo 2011-01-05 21:13:11 +00:00 committed by David S. Miller
parent 8649a230e3
commit 49da97dcb6
2 changed files with 41 additions and 43 deletions
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81
drivers/net/fec.c
View File

@ -59,15 +59,11 @@
#define FEC_ALIGNMENT 0x3
#endif
/*
* Define the fixed address of the FEC hardware.
*/
static unsigned char macaddr[ETH_ALEN];
module_param_array(macaddr, byte, NULL, 0);
MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
#if defined(CONFIG_M5272)
static unsigned char fec_mac_default[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
/*
* Some hardware gets it MAC address out of local flash memory.
* if this is non-zero then assume it is the address to get MAC from.
@ -537,37 +533,50 @@ rx_processing_done:
}
/* ------------------------------------------------------------------------- */
#ifdef CONFIG_M5272
static void __inline__ fec_get_mac(struct net_device *dev)
{
struct fec_enet_private *fep = netdev_priv(dev);
struct fec_platform_data *pdata = fep->pdev->dev.platform_data;
unsigned char *iap, tmpaddr[ETH_ALEN];
if (FEC_FLASHMAC) {
/*
* Get MAC address from FLASH.
* If it is all 1's or 0's, use the default.
*/
iap = (unsigned char *)FEC_FLASHMAC;
if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) &&
(iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
iap = fec_mac_default;
if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) &&
(iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff))
iap = fec_mac_default;
} else {
*((unsigned long *) &tmpaddr[0]) = readl(fep->hwp + FEC_ADDR_LOW);
*((unsigned short *) &tmpaddr[4]) = (readl(fep->hwp + FEC_ADDR_HIGH) >> 16);
/*
* try to get mac address in following order:
*
* 1) module parameter via kernel command line in form
* fec.macaddr=0x00,0x04,0x9f,0x01,0x30,0xe0
*/
iap = macaddr;
/*
* 2) from flash or fuse (via platform data)
*/
if (!is_valid_ether_addr(iap)) {
#ifdef CONFIG_M5272
if (FEC_FLASHMAC)
iap = (unsigned char *)FEC_FLASHMAC;
#else
if (pdata)
memcpy(iap, pdata->mac, ETH_ALEN);
#endif
}
/*
* 3) FEC mac registers set by bootloader
*/
if (!is_valid_ether_addr(iap)) {
*((unsigned long *) &tmpaddr[0]) =
be32_to_cpu(readl(fep->hwp + FEC_ADDR_LOW));
*((unsigned short *) &tmpaddr[4]) =
be16_to_cpu(readl(fep->hwp + FEC_ADDR_HIGH) >> 16);
iap = &tmpaddr[0];
}
memcpy(dev->dev_addr, iap, ETH_ALEN);
/* Adjust MAC if using default MAC address */
if (iap == fec_mac_default)
dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->pdev->id;
/* Adjust MAC if using macaddr */
if (iap == macaddr)
dev->dev_addr[ETH_ALEN-1] = macaddr[ETH_ALEN-1] + fep->pdev->id;
}
#endif
/* ------------------------------------------------------------------------- */
@ -1087,22 +1096,8 @@ static int fec_enet_init(struct net_device *dev)
fep->hwp = (void __iomem *)dev->base_addr;
fep->netdev = dev;
/* Set the Ethernet address */
#ifdef CONFIG_M5272
/* Get the Ethernet address */
fec_get_mac(dev);
#else
{
unsigned long l;
l = readl(fep->hwp + FEC_ADDR_LOW);
dev->dev_addr[0] = (unsigned char)((l & 0xFF000000) >> 24);
dev->dev_addr[1] = (unsigned char)((l & 0x00FF0000) >> 16);
dev->dev_addr[2] = (unsigned char)((l & 0x0000FF00) >> 8);
dev->dev_addr[3] = (unsigned char)((l & 0x000000FF) >> 0);
l = readl(fep->hwp + FEC_ADDR_HIGH);
dev->dev_addr[4] = (unsigned char)((l & 0xFF000000) >> 24);
dev->dev_addr[5] = (unsigned char)((l & 0x00FF0000) >> 16);
}
#endif
/* Set receive and transmit descriptor base. */
fep->rx_bd_base = cbd_base;

3
include/linux/fec.h
View File

@ -3,6 +3,8 @@
* Copyright (c) 2009 Orex Computed Radiography
* Baruch Siach <baruch@tkos.co.il>
*
* Copyright (C) 2010 Freescale Semiconductor, Inc.
*
* Header file for the FEC platform data
*
* This program is free software; you can redistribute it and/or modify
@ -16,6 +18,7 @@
struct fec_platform_data {
phy_interface_t phy;
unsigned char mac[ETH_ALEN];
};
#endif