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authorFelix Fietkau <nbd@openwrt.org>2016-02-25 13:31:32 +0000
committerFelix Fietkau <nbd@openwrt.org>2016-02-25 13:31:32 +0000
commit3964ac919a4000d7e291344e41a31187e2f85cb1 (patch)
treed3715461e71beda43e2fc6e4c7aa6efb1b4dca3b /target/linux/ar71xx/files/arch
parent285d9e364e6df1b1209077b4730a2e268d813f00 (diff)
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ar71xx: WNR2000v3: fix for random WLAN MAC
Fix for invalid/random WLAN MAC address in WNR2000v3. Permanent platform MAC is calculated and assigned during system startup. WLAN MAC follows wired Ethernet interface addresses. Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl> SVN-Revision: 48777
Diffstat (limited to 'target/linux/ar71xx/files/arch')
-rw-r--r--target/linux/ar71xx/files/arch/mips/ath79/mach-wnr2000-v3.c47
1 files changed, 41 insertions, 6 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-wnr2000-v3.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-wnr2000-v3.c
index 205c2e7d5a..59d10a9997 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-wnr2000-v3.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-wnr2000-v3.c
@@ -14,6 +14,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/kernel.h> /* for max() macro */
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h> /* needed to disable switch LEDs */
@@ -66,6 +67,7 @@
#define WNR2000V3_MAC0_OFFSET 0
#define WNR2000V3_MAC1_OFFSET 6
#define WNR2000V3_PCIE_CALDATA_OFFSET 0x1000
+#define WNR2000V3_WMAC_OFFSET 0x108c /* wireless MAC is inside ART */
static struct gpio_led wnr2000v3_leds_gpio[] __initdata = {
{
@@ -181,7 +183,35 @@ static struct gpio_keys_button wnr2000v3_gpio_keys[] __initdata = {
}
};
-static void __init wnr_common_setup(void)
+/*
+ * For WNR2000v3 ART flash area used for WLAN MAC is usually empty (0xff)
+ * so ath9k driver uses random MAC instead each time module is loaded.
+ * To fix that, assign permanent WLAN MAC equal to ethN's MAC plus 1,
+ * so network interfaces get sequential addresses.
+ * If ART wireless MAC address field has been filled by user, use it.
+ */
+static void __init wnr_get_wmac(u8 *wmac_gen_addr, int mac0_art_offset,
+ int mac1_art_offset, int wmac_art_offset)
+{
+ u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
+ u8 *eth0_mac_addr = (u8 *) (art + mac0_art_offset);
+ u8 *eth1_mac_addr = (u8 *) (art + mac1_art_offset);
+ u8 *wlan_mac_addr = (u8 *) (art + wmac_art_offset);
+
+ /* only 0xff if all bits are set - address is invalid, empty area */
+ if ((wlan_mac_addr[0] & wlan_mac_addr[1] & wlan_mac_addr[2] &
+ wlan_mac_addr[3] & wlan_mac_addr[4] & wlan_mac_addr[5]) == 0xff) {
+ memcpy(wmac_gen_addr, eth0_mac_addr, 5);
+ wmac_gen_addr[5] = max(eth0_mac_addr[5], eth1_mac_addr[5]) + 1;
+
+ /* Avoid potential conflict in case max(0xff,0x00)+1==0x00 */
+ if (!wmac_gen_addr[5])
+ wmac_gen_addr[5] = 1;
+ } else
+ memcpy(wmac_gen_addr, wlan_mac_addr, 6);
+}
+
+static void __init wnr_common_setup(u8 *wmac_addr)
{
u8 *art = (u8 *) KSEG1ADDR(0x1fff0000);
@@ -200,12 +230,17 @@ static void __init wnr_common_setup(void)
ath79_register_eth(1);
ath79_register_m25p80(NULL);
- ap91_pci_init(art + WNR2000V3_PCIE_CALDATA_OFFSET, NULL);
+ ap91_pci_init(art + WNR2000V3_PCIE_CALDATA_OFFSET, wmac_addr);
}
static void __init wnr2000v3_setup(void)
{
- wnr_common_setup();
+ u8 wlan_mac_addr[6];
+
+ wnr_get_wmac(wlan_mac_addr, WNR2000V3_MAC0_OFFSET,
+ WNR2000V3_MAC1_OFFSET, WNR2000V3_WMAC_OFFSET);
+
+ wnr_common_setup(wlan_mac_addr);
ath79_register_leds_gpio(-1, ARRAY_SIZE(wnr2000v3_leds_gpio),
wnr2000v3_leds_gpio);
@@ -219,7 +254,7 @@ MIPS_MACHINE(ATH79_MACH_WNR2000_V3, "WNR2000V3", "NETGEAR WNR2000 V3", wnr2000v3
static void __init wnr612v2_setup(void)
{
- wnr_common_setup();
+ wnr_common_setup(NULL);
ath79_register_leds_gpio(-1, ARRAY_SIZE(wnr612v2_leds_gpio),
wnr612v2_leds_gpio);
@@ -229,7 +264,7 @@ MIPS_MACHINE(ATH79_MACH_WNR612_V2, "WNR612V2", "NETGEAR WNR612 V2", wnr612v2_set
static void __init wnr1000v2_setup(void)
{
- wnr_common_setup();
+ wnr_common_setup(NULL);
ath79_register_leds_gpio(-1, ARRAY_SIZE(wnr1000v2_leds_gpio),
wnr1000v2_leds_gpio);
@@ -247,7 +282,7 @@ static void __init wpn824n_setup(void)
AR724X_GPIO_FUNC_ETH_SWITCH_LED4_EN |
AR724X_GPIO_FUNC_CLK_OBS3_EN);
- wnr_common_setup();
+ wnr_common_setup(NULL);
ath79_register_leds_gpio(-1, ARRAY_SIZE(wpn824n_leds_gpio),
wpn824n_leds_gpio);