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authorFelix Fietkau <nbd@openwrt.org>2011-07-09 06:29:46 +0000
committerFelix Fietkau <nbd@openwrt.org>2011-07-09 06:29:46 +0000
commit2806c75c07ea492eb48ecf7bcca9d6edfffe40df (patch)
tree8e29f11d1b2d8275f41b8a6dc2f0a62bc0409692 /target
parentc1f1058a89bfa6827da3edb8ff99b968fe5c66c5 (diff)
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ag71xx: keep the rx engine stopped while the link is not up, should hopefully fix stability issues from #9405
SVN-Revision: 27567
Diffstat (limited to 'target')
-rw-r--r--target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c182
1 files changed, 91 insertions, 91 deletions
diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index 6bc4fd3560..e228fd0fd2 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -343,93 +343,6 @@ static unsigned char *ag71xx_speed_str(struct ag71xx *ag)
return "?";
}
-void ag71xx_link_adjust(struct ag71xx *ag)
-{
- struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
- u32 cfg2;
- u32 ifctl;
- u32 fifo5;
- u32 mii_speed;
-
- if (!ag->link) {
- netif_carrier_off(ag->dev);
- if (netif_msg_link(ag))
- printk(KERN_INFO "%s: link down\n", ag->dev->name);
- return;
- }
-
- cfg2 = ag71xx_rr(ag, AG71XX_REG_MAC_CFG2);
- cfg2 &= ~(MAC_CFG2_IF_1000 | MAC_CFG2_IF_10_100 | MAC_CFG2_FDX);
- cfg2 |= (ag->duplex) ? MAC_CFG2_FDX : 0;
-
- ifctl = ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL);
- ifctl &= ~(MAC_IFCTL_SPEED);
-
- fifo5 = ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5);
- fifo5 &= ~FIFO_CFG5_BM;
-
- switch (ag->speed) {
- case SPEED_1000:
- mii_speed = MII_CTRL_SPEED_1000;
- cfg2 |= MAC_CFG2_IF_1000;
- fifo5 |= FIFO_CFG5_BM;
- break;
- case SPEED_100:
- mii_speed = MII_CTRL_SPEED_100;
- cfg2 |= MAC_CFG2_IF_10_100;
- ifctl |= MAC_IFCTL_SPEED;
- break;
- case SPEED_10:
- mii_speed = MII_CTRL_SPEED_10;
- cfg2 |= MAC_CFG2_IF_10_100;
- break;
- default:
- BUG();
- return;
- }
-
- if (pdata->is_ar91xx)
- ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x00780fff);
- else if (pdata->is_ar724x)
- ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, pdata->fifo_cfg3);
- else
- ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x008001ff);
-
- if (pdata->set_pll)
- pdata->set_pll(ag->speed);
-
- ag71xx_mii_ctrl_set_speed(ag, mii_speed);
-
- ag71xx_wr(ag, AG71XX_REG_MAC_CFG2, cfg2);
- ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, fifo5);
- ag71xx_wr(ag, AG71XX_REG_MAC_IFCTL, ifctl);
-
- netif_carrier_on(ag->dev);
- if (netif_msg_link(ag))
- printk(KERN_INFO "%s: link up (%sMbps/%s duplex)\n",
- ag->dev->name,
- ag71xx_speed_str(ag),
- (DUPLEX_FULL == ag->duplex) ? "Full" : "Half");
-
- DBG("%s: fifo_cfg0=%#x, fifo_cfg1=%#x, fifo_cfg2=%#x\n",
- ag->dev->name,
- ag71xx_rr(ag, AG71XX_REG_FIFO_CFG0),
- ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1),
- ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2));
-
- DBG("%s: fifo_cfg3=%#x, fifo_cfg4=%#x, fifo_cfg5=%#x\n",
- ag->dev->name,
- ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3),
- ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4),
- ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5));
-
- DBG("%s: mac_cfg2=%#x, mac_ifctl=%#x, mii_ctrl=%#x\n",
- ag->dev->name,
- ag71xx_rr(ag, AG71XX_REG_MAC_CFG2),
- ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL),
- ag71xx_mii_ctrl_rr(ag));
-}
-
static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac)
{
u32 t;
@@ -560,10 +473,98 @@ static void ag71xx_hw_start(struct ag71xx *ag)
static void ag71xx_hw_stop(struct ag71xx *ag)
{
- /* disable all interrupts */
+ /* disable all interrupts and stop the rx engine */
ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, 0);
+ ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0);
+}
- ag71xx_dma_reset(ag);
+void ag71xx_link_adjust(struct ag71xx *ag)
+{
+ struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
+ u32 cfg2;
+ u32 ifctl;
+ u32 fifo5;
+ u32 mii_speed;
+
+ if (!ag->link) {
+ ag71xx_hw_stop(ag);
+ netif_carrier_off(ag->dev);
+ if (netif_msg_link(ag))
+ printk(KERN_INFO "%s: link down\n", ag->dev->name);
+ return;
+ }
+
+ cfg2 = ag71xx_rr(ag, AG71XX_REG_MAC_CFG2);
+ cfg2 &= ~(MAC_CFG2_IF_1000 | MAC_CFG2_IF_10_100 | MAC_CFG2_FDX);
+ cfg2 |= (ag->duplex) ? MAC_CFG2_FDX : 0;
+
+ ifctl = ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL);
+ ifctl &= ~(MAC_IFCTL_SPEED);
+
+ fifo5 = ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5);
+ fifo5 &= ~FIFO_CFG5_BM;
+
+ switch (ag->speed) {
+ case SPEED_1000:
+ mii_speed = MII_CTRL_SPEED_1000;
+ cfg2 |= MAC_CFG2_IF_1000;
+ fifo5 |= FIFO_CFG5_BM;
+ break;
+ case SPEED_100:
+ mii_speed = MII_CTRL_SPEED_100;
+ cfg2 |= MAC_CFG2_IF_10_100;
+ ifctl |= MAC_IFCTL_SPEED;
+ break;
+ case SPEED_10:
+ mii_speed = MII_CTRL_SPEED_10;
+ cfg2 |= MAC_CFG2_IF_10_100;
+ break;
+ default:
+ BUG();
+ return;
+ }
+
+ if (pdata->is_ar91xx)
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x00780fff);
+ else if (pdata->is_ar724x)
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, pdata->fifo_cfg3);
+ else
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x008001ff);
+
+ if (pdata->set_pll)
+ pdata->set_pll(ag->speed);
+
+ ag71xx_mii_ctrl_set_speed(ag, mii_speed);
+
+ ag71xx_wr(ag, AG71XX_REG_MAC_CFG2, cfg2);
+ ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, fifo5);
+ ag71xx_wr(ag, AG71XX_REG_MAC_IFCTL, ifctl);
+ ag71xx_hw_start(ag);
+
+ netif_carrier_on(ag->dev);
+ if (netif_msg_link(ag))
+ printk(KERN_INFO "%s: link up (%sMbps/%s duplex)\n",
+ ag->dev->name,
+ ag71xx_speed_str(ag),
+ (DUPLEX_FULL == ag->duplex) ? "Full" : "Half");
+
+ DBG("%s: fifo_cfg0=%#x, fifo_cfg1=%#x, fifo_cfg2=%#x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG0),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2));
+
+ DBG("%s: fifo_cfg3=%#x, fifo_cfg4=%#x, fifo_cfg5=%#x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4),
+ ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5));
+
+ DBG("%s: mac_cfg2=%#x, mac_ifctl=%#x, mii_ctrl=%#x\n",
+ ag->dev->name,
+ ag71xx_rr(ag, AG71XX_REG_MAC_CFG2),
+ ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL),
+ ag71xx_mii_ctrl_rr(ag));
}
static int ag71xx_open(struct net_device *dev)
@@ -585,8 +586,6 @@ static int ag71xx_open(struct net_device *dev)
ag71xx_hw_set_macaddr(ag, dev->dev_addr);
- ag71xx_hw_start(ag);
-
netif_start_queue(dev);
return 0;
@@ -609,6 +608,7 @@ static int ag71xx_stop(struct net_device *dev)
netif_stop_queue(dev);
ag71xx_hw_stop(ag);
+ ag71xx_dma_reset(ag);
napi_disable(&ag->napi);
del_timer_sync(&ag->oom_timer);