From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Guo Subject: [PATCH v4 03/10] net/fec: add mac field into platform data and consolidate fec_get_mac Date: Thu, 6 Jan 2011 15:13:11 +0800 Message-ID: <1294297998-26930-4-git-send-email-shawn.guo@freescale.com> References: <1294297998-26930-1-git-send-email-shawn.guo@freescale.com> Mime-Version: 1.0 Content-Type: text/plain To: , , , , , , , Received: from db3ehsobe003.messaging.microsoft.com ([213.199.154.141]:2494 "EHLO DB3EHSOBE003.bigfish.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754030Ab1AFHLp (ORCPT ); Thu, 6 Jan 2011 02:11:45 -0500 In-Reply-To: <1294297998-26930-1-git-send-email-shawn.guo@freescale.com> Sender: netdev-owner@vger.kernel.org List-ID: 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 --- Changes for v3: - Use module parameter than new kernel command line to pass mac address - Change variable name and comment to remove confusing word "default" - Fix copyright breakage in fec.h drivers/net/fec.c | 81 ++++++++++++++++++++++++--------------------------- include/linux/fec.h | 3 ++ 2 files changed, 41 insertions(+), 43 deletions(-) diff --git a/drivers/net/fec.c b/drivers/net/fec.c index 47f6b3b..47a3c7b 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -59,15 +59,11 @@ #define FEC_ALIGNMENT 0x3 #endif -/* - * Define the fixed address of the FEC hardware. - */ -#if defined(CONFIG_M5272) - -static unsigned char fec_mac_default[] = { - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -}; +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) /* * 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; diff --git a/include/linux/fec.h b/include/linux/fec.h index 5d3523d..bcff455 100644 --- a/include/linux/fec.h +++ b/include/linux/fec.h @@ -3,6 +3,8 @@ * Copyright (c) 2009 Orex Computed Radiography * Baruch Siach * + * 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 -- 1.7.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@freescale.com (Shawn Guo) Date: Thu, 6 Jan 2011 15:13:11 +0800 Subject: [PATCH v4 03/10] net/fec: add mac field into platform data and consolidate fec_get_mac In-Reply-To: <1294297998-26930-1-git-send-email-shawn.guo@freescale.com> References: <1294297998-26930-1-git-send-email-shawn.guo@freescale.com> Message-ID: <1294297998-26930-4-git-send-email-shawn.guo@freescale.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- Changes for v3: - Use module parameter than new kernel command line to pass mac address - Change variable name and comment to remove confusing word "default" - Fix copyright breakage in fec.h drivers/net/fec.c | 81 ++++++++++++++++++++++++--------------------------- include/linux/fec.h | 3 ++ 2 files changed, 41 insertions(+), 43 deletions(-) diff --git a/drivers/net/fec.c b/drivers/net/fec.c index 47f6b3b..47a3c7b 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -59,15 +59,11 @@ #define FEC_ALIGNMENT 0x3 #endif -/* - * Define the fixed address of the FEC hardware. - */ -#if defined(CONFIG_M5272) - -static unsigned char fec_mac_default[] = { - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -}; +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) /* * 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; diff --git a/include/linux/fec.h b/include/linux/fec.h index 5d3523d..bcff455 100644 --- a/include/linux/fec.h +++ b/include/linux/fec.h @@ -3,6 +3,8 @@ * Copyright (c) 2009 Orex Computed Radiography * Baruch Siach * + * 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 -- 1.7.1