From 04c7788c2bb3542e5c8c9d7175193e4d925edf20 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 6 Feb 2019 13:30:17 +0100 Subject: [PATCH] r8169: Load MAC address from device tree if present If the system was booted using a device tree and if the device tree contains a MAC address, use it instead of reading one from the EEPROM. This is useful in situations where the EEPROM isn't properly programmed or where the firmware wants to override the existing MAC address. Signed-off-by: Thierry Reding Reviewed-by: Heiner Kallweit Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169.c | 36 ++++++++++++++++++---------- 1 file changed, 23 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index e8a112149a62..501891be7c56 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -7110,6 +7110,21 @@ static int rtl_alloc_irq(struct rtl8169_private *tp) return pci_alloc_irq_vectors(tp->pci_dev, 1, 1, flags); } +static void rtl_read_mac_address(struct rtl8169_private *tp, + u8 mac_addr[ETH_ALEN]) +{ + /* Get MAC address */ + switch (tp->mac_version) { + case RTL_GIGA_MAC_VER_35 ... RTL_GIGA_MAC_VER_38: + case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_51: + *(u32 *)&mac_addr[0] = rtl_eri_read(tp, 0xe0, ERIAR_EXGMAC); + *(u16 *)&mac_addr[4] = rtl_eri_read(tp, 0xe4, ERIAR_EXGMAC); + break; + default: + break; + } +} + DECLARE_RTL_COND(rtl_link_list_ready_cond) { return RTL_R8(tp, MCU) & LINK_LIST_RDY; @@ -7301,6 +7316,7 @@ static int rtl_get_ether_clk(struct rtl8169_private *tp) static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data; + u8 mac_addr[ETH_ALEN] __aligned(4) = {}; struct rtl8169_private *tp; struct net_device *dev; int chipset, region, i; @@ -7403,20 +7419,14 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) u64_stats_init(&tp->rx_stats.syncp); u64_stats_init(&tp->tx_stats.syncp); - /* Get MAC address */ - switch (tp->mac_version) { - u8 mac_addr[ETH_ALEN] __aligned(4); - case RTL_GIGA_MAC_VER_35 ... RTL_GIGA_MAC_VER_38: - case RTL_GIGA_MAC_VER_40 ... RTL_GIGA_MAC_VER_51: - *(u32 *)&mac_addr[0] = rtl_eri_read(tp, 0xe0, ERIAR_EXGMAC); - *(u16 *)&mac_addr[4] = rtl_eri_read(tp, 0xe4, ERIAR_EXGMAC); + /* get MAC address */ + rc = eth_platform_get_mac_address(&pdev->dev, mac_addr); + if (rc) + rtl_read_mac_address(tp, mac_addr); + + if (is_valid_ether_addr(mac_addr)) + rtl_rar_set(tp, mac_addr); - if (is_valid_ether_addr(mac_addr)) - rtl_rar_set(tp, mac_addr); - break; - default: - break; - } for (i = 0; i < ETH_ALEN; i++) dev->dev_addr[i] = RTL_R8(tp, MAC0 + i); -- 2.30.2