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ar71xx: WNR2000v3: fix for random WLAN MAC

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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
This commit is contained in:
Felix Fietkau 2016-02-25 13:31:32 +00:00
parent 285d9e364e
commit 3964ac919a
1 changed files with 41 additions and 6 deletions
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47
target/linux/ar71xx/files/arch/mips/ath79/mach-wnr2000-v3.c
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@ -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);