From f8c5db89e793a4bc6c1e87bd7b3a5cec16b75bc3 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Wed, 10 Sep 2014 22:42:14 +0200 Subject: [PATCH 35/36] owrt: lantiq: wifi and ethernet eeprom handling Signed-off-by: John Crispin --- .../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 3 + arch/mips/lantiq/xway/Makefile | 3 + arch/mips/lantiq/xway/ath5k_eep.c | 136 +++++++++++++++++++++ arch/mips/lantiq/xway/eth_mac.c | 25 ++++ drivers/net/ethernet/lantiq_etop.c | 6 +- 5 files changed, 172 insertions(+), 1 deletion(-) create mode 100644 arch/mips/lantiq/xway/ath5k_eep.c create mode 100644 arch/mips/lantiq/xway/eth_mac.c --- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h +++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h @@ -99,5 +99,8 @@ extern __iomem void *ltq_cgu_membase; extern void ltq_pmu_enable(unsigned int module); extern void ltq_pmu_disable(unsigned int module); +/* allow the ethernet driver to load a flash mapped mac addr */ +const u8* ltq_get_eth_mac(void); + #endif /* CONFIG_SOC_TYPE_XWAY */ #endif /* _LTQ_XWAY_H__ */ --- a/arch/mips/lantiq/xway/Makefile +++ b/arch/mips/lantiq/xway/Makefile @@ -8,3 +8,6 @@ obj-y += timer.o endif obj-y += vmmc.o + +obj-y += eth_mac.o +obj-$(CONFIG_PCI) += ath5k_eep.o --- /dev/null +++ b/arch/mips/lantiq/xway/ath5k_eep.c @@ -0,0 +1,136 @@ +/* + * Copyright (C) 2011 Luca Olivetti + * Copyright (C) 2011 John Crispin + * Copyright (C) 2011 Andrej Vlašić + * Copyright (C) 2013 Álvaro Fernández Rojas + * Copyright (C) 2013 Daniel Gimpelevich + * Copyright (C) 2015 Vittorio Gambaletta + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +extern int (*ltq_pci_plat_dev_init)(struct pci_dev *dev); +struct ath5k_platform_data ath5k_pdata; +static u8 athxk_eeprom_mac[6]; + +static int ath5k_pci_plat_dev_init(struct pci_dev *dev) +{ + dev->dev.platform_data = &ath5k_pdata; + return 0; +} + +static int ath5k_eep_load; +int __init of_ath5k_eeprom_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node, *mtd_np = NULL; + int mac_offset; + u32 mac_inc = 0; + int i; + struct mtd_info *the_mtd; + size_t flash_readlen; + const __be32 *list; + const char *part; + phandle phandle; + + list = of_get_property(np, "ath,eep-flash", &i); + if (!list || (i != (2 * sizeof(*list)))) + return -ENODEV; + + phandle = be32_to_cpup(list++); + if (phandle) + mtd_np = of_find_node_by_phandle(phandle); + + if (!mtd_np) + return -ENODEV; + + part = of_get_property(mtd_np, "label", NULL); + if (!part) + part = mtd_np->name; + + the_mtd = get_mtd_device_nm(part); + if (IS_ERR(the_mtd)) + return -ENODEV; + + ath5k_pdata.eeprom_data = kmalloc(ATH5K_PLAT_EEP_MAX_WORDS<<1, GFP_KERNEL); + + i = mtd_read(the_mtd, be32_to_cpup(list), ATH5K_PLAT_EEP_MAX_WORDS << 1, + &flash_readlen, (void *) ath5k_pdata.eeprom_data); + + if (!of_property_read_u32(np, "ath,mac-offset", &mac_offset)) { + size_t mac_readlen; + mtd_read(the_mtd, mac_offset, 6, &mac_readlen, + (void *) athxk_eeprom_mac); + } + put_mtd_device(the_mtd); + + if (((ATH5K_PLAT_EEP_MAX_WORDS<<1) != flash_readlen) || i) { + dev_err(&pdev->dev, "failed to load eeprom from mtd\n"); + return -ENODEV; + } + + if (of_find_property(np, "ath,eep-swap", NULL)) + for (i = 0; i < ATH5K_PLAT_EEP_MAX_WORDS; i++) + ath5k_pdata.eeprom_data[i] = swab16(ath5k_pdata.eeprom_data[i]); + + if (!is_valid_ether_addr(athxk_eeprom_mac) && ltq_get_eth_mac()) + ether_addr_copy(athxk_eeprom_mac, ltq_get_eth_mac()); + + if (!is_valid_ether_addr(athxk_eeprom_mac)) { + dev_warn(&pdev->dev, "using random mac\n"); + eth_random_addr(athxk_eeprom_mac); + } + + if (!of_property_read_u32(np, "ath,mac-increment", &mac_inc)) + athxk_eeprom_mac[5] += mac_inc; + + ath5k_pdata.macaddr = athxk_eeprom_mac; + ltq_pci_plat_dev_init = ath5k_pci_plat_dev_init; + + dev_info(&pdev->dev, "loaded ath5k eeprom\n"); + + return 0; +} + +static struct of_device_id ath5k_eeprom_ids[] = { + { .compatible = "ath5k,eeprom" }, + { } +}; + +static struct platform_driver ath5k_eeprom_driver = { + .driver = { + .name = "ath5k,eeprom", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(ath5k_eeprom_ids), + }, +}; + +static int __init of_ath5k_eeprom_init(void) +{ + int ret = platform_driver_probe(&ath5k_eeprom_driver, of_ath5k_eeprom_probe); + + if (ret) + ath5k_eep_load = 1; + + return ret; +} + +static int __init of_ath5k_eeprom_init_late(void) +{ + if (!ath5k_eep_load) + return 0; + + return platform_driver_probe(&ath5k_eeprom_driver, of_ath5k_eeprom_probe); +} +late_initcall(of_ath5k_eeprom_init_late); +subsys_initcall(of_ath5k_eeprom_init); --- /dev/null +++ b/arch/mips/lantiq/xway/eth_mac.c @@ -0,0 +1,25 @@ +/* + * Copyright (C) 2012 John Crispin + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include +#include + +static u8 eth_mac[6]; +static int eth_mac_set; + +const u8* ltq_get_eth_mac(void) +{ + return eth_mac; +} + +static int __init setup_ethaddr(char *str) +{ + eth_mac_set = mac_pton(str, eth_mac); + return !eth_mac_set; +} +early_param("ethaddr", setup_ethaddr); --- a/drivers/net/ethernet/lantiq_etop.c +++ b/drivers/net/ethernet/lantiq_etop.c @@ -763,7 +763,11 @@ ltq_etop_init(struct net_device *dev) if (err) goto err_hw; - memcpy(&mac, &priv->pldata->mac, sizeof(struct sockaddr)); + memcpy(&mac.sa_data, ltq_get_eth_mac(), ETH_ALEN); + + if (!is_valid_ether_addr(mac.sa_data)) + memcpy(&mac.sa_data, priv->mac, ETH_ALEN); + if (!is_valid_ether_addr(mac.sa_data)) { pr_warn("etop: invalid MAC, using random\n"); eth_random_addr(mac.sa_data);