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

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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 #define FEC_ALIGNMENT 0x3
#endif #endif
/* static unsigned char macaddr[ETH_ALEN];
* Define the fixed address of the FEC hardware. module_param_array(macaddr, byte, NULL, 0);
*/ MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
#if defined(CONFIG_M5272) #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. * 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. * 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) static void __inline__ fec_get_mac(struct net_device *dev)
{ {
struct fec_enet_private *fep = netdev_priv(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]; unsigned char *iap, tmpaddr[ETH_ALEN];
if (FEC_FLASHMAC) { /*
/* * try to get mac address in following order:
* Get MAC address from FLASH. *
* If it is all 1's or 0's, use the default. * 1) module parameter via kernel command line in form
*/ * fec.macaddr=0x00,0x04,0x9f,0x01,0x30,0xe0
iap = (unsigned char *)FEC_FLASHMAC; */
if ((iap[0] == 0) && (iap[1] == 0) && (iap[2] == 0) && iap = macaddr;
(iap[3] == 0) && (iap[4] == 0) && (iap[5] == 0))
iap = fec_mac_default; /*
if ((iap[0] == 0xff) && (iap[1] == 0xff) && (iap[2] == 0xff) && * 2) from flash or fuse (via platform data)
(iap[3] == 0xff) && (iap[4] == 0xff) && (iap[5] == 0xff)) */
iap = fec_mac_default; if (!is_valid_ether_addr(iap)) {
} else { #ifdef CONFIG_M5272
*((unsigned long *) &tmpaddr[0]) = readl(fep->hwp + FEC_ADDR_LOW); if (FEC_FLASHMAC)
*((unsigned short *) &tmpaddr[4]) = (readl(fep->hwp + FEC_ADDR_HIGH) >> 16); 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]; iap = &tmpaddr[0];
} }
memcpy(dev->dev_addr, iap, ETH_ALEN); memcpy(dev->dev_addr, iap, ETH_ALEN);
/* Adjust MAC if using default MAC address */ /* Adjust MAC if using macaddr */
if (iap == fec_mac_default) if (iap == macaddr)
dev->dev_addr[ETH_ALEN-1] = fec_mac_default[ETH_ALEN-1] + fep->pdev->id; 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->hwp = (void __iomem *)dev->base_addr;
fep->netdev = dev; fep->netdev = dev;
/* Set the Ethernet address */ /* Get the Ethernet address */
#ifdef CONFIG_M5272
fec_get_mac(dev); 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. */ /* Set receive and transmit descriptor base. */
fep->rx_bd_base = cbd_base; fep->rx_bd_base = cbd_base;

3
include/linux/fec.h
View File

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