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fix wl-500g wan port lockup, close #314

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@3325 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2006-03-07 10:46:53 +00:00
parent e09cb16571
commit fac72bfbb0
1 changed files with 209 additions and 48 deletions
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257
openwrt/target/linux/brcm-2.4/patches/008-b44_bcm47xx_support.patch
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@ -1,6 +1,6 @@
diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
--- linux.old/drivers/net/b44.c 2006-01-16 21:10:55.873911750 +0100
+++ linux.dev/drivers/net/b44.c 2006-01-16 21:16:02.041046000 +0100
--- linux.old/drivers/net/b44.c 2006-02-12 13:49:59.000000000 +0100
+++ linux.dev/drivers/net/b44.c 2006-03-06 22:37:14.000000000 +0100
@@ -1,7 +1,9 @@
/* b44.c: Broadcom 4400 device driver.
*
@ -72,7 +72,21 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
{ } /* terminate list with empty entry */
};
@@ -236,6 +275,8 @@
@@ -113,11 +152,13 @@
udelay(10);
}
if (i == timeout) {
+#ifdef DEBUG
printk(KERN_ERR PFX "%s: BUG! Timeout waiting for bit %08x of register "
"%lx to %s.\n",
bp->dev->name,
bit, reg,
(clear ? "clear" : "set"));
+#endif
return -ENODEV;
}
return 0;
@@ -236,6 +277,8 @@
udelay(1);
}
@ -81,7 +95,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
static int ssb_core_unit(struct b44 *bp)
{
#if 0
@@ -258,6 +299,9 @@
@@ -258,6 +301,9 @@
break;
};
#endif
@ -91,7 +105,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
return 0;
}
@@ -267,6 +311,28 @@
@@ -267,6 +313,28 @@
== SBTMSLOW_CLOCK);
}
@ -120,7 +134,16 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
static void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
{
u32 val;
@@ -303,14 +369,14 @@
@@ -287,7 +355,7 @@
static inline void __b44_disable_ints(struct b44 *bp)
{
- bw32(B44_IMASK, 0);
+ bw32(B44_IMASK, ISTAT_TO); /* leave the timeout interrupt active */
}
static void b44_disable_ints(struct b44 *bp)
@@ -303,14 +371,14 @@
bw32(B44_IMASK, bp->imask);
}
@ -137,7 +160,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
(reg << MDIO_DATA_RA_SHIFT) |
(MDIO_TA_VALID << MDIO_DATA_TA_SHIFT)));
err = b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
@@ -319,23 +385,42 @@
@@ -319,23 +387,42 @@
return err;
}
@ -182,13 +205,11 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
err = b44_writephy(bp, MII_BMCR, BMCR_RESET);
if (err)
return err;
@@ -405,6 +490,24 @@
{
@@ -406,6 +493,23 @@
u32 val;
int err;
+ char *s;
+
+#ifdef CONFIG_BCM947XX
+ /*
+ * workaround for bad hardware design in Linksys WAP54G v1.0
+ * see https://dev.openwrt.org/ticket/146
@ -201,13 +222,14 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
+ (__b44_writephy(bp, 0, MII_BMCR, val & ~BMCR_ISOLATE) != 0)) {
+ printk(KERN_WARNING PFX "PHY: cannot reset MII transceiver isolate bit.\n");
+ }
+#endif
+
+ if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
+ return 0;
+
if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0)
goto out;
@@ -498,6 +601,19 @@
if ((err = b44_writephy(bp, B44_MII_ALEDCTRL,
@@ -498,6 +602,19 @@
{
u32 bmsr, aux;
@ -227,7 +249,123 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
if (!b44_readphy(bp, MII_BMSR, &bmsr) &&
!b44_readphy(bp, B44_MII_AUXCTRL, &aux) &&
(bmsr != 0xffff)) {
@@ -1092,6 +1208,8 @@
@@ -765,6 +882,25 @@
return received;
}
+
+static inline void __b44_reset(struct b44 *bp)
+{
+ spin_lock_irq(&bp->lock);
+ b44_halt(bp);
+ b44_init_rings(bp);
+ b44_init_hw(bp);
+ spin_unlock_irq(&bp->lock);
+
+ b44_enable_ints(bp);
+ netif_wake_queue(bp->dev);
+}
+
+static inline void __b44_set_timeout(struct b44 *bp, int timeout)
+{
+ /* Set timeout for Rx to two seconds after the last Tx */
+ bw32(B44_GPTIMER, timeout ? 2 * 125000000 : 0);
+}
+
static int b44_poll(struct net_device *netdev, int *budget)
{
struct b44 *bp = netdev->priv;
@@ -772,13 +908,13 @@
spin_lock_irq(&bp->lock);
- if (bp->istat & (ISTAT_TX | ISTAT_TO)) {
+ if (bp->istat & ISTAT_TX) {
/* spin_lock(&bp->tx_lock); */
b44_tx(bp);
/* spin_unlock(&bp->tx_lock); */
}
spin_unlock_irq(&bp->lock);
-
+
done = 1;
if (bp->istat & ISTAT_RX) {
int orig_budget = *budget;
@@ -796,24 +932,18 @@
done = 0;
}
- if (bp->istat & ISTAT_ERRORS) {
- spin_lock_irq(&bp->lock);
- b44_halt(bp);
- b44_init_rings(bp);
- b44_init_hw(bp);
- netif_wake_queue(bp->dev);
- spin_unlock_irq(&bp->lock);
- done = 1;
- }
-
if (done) {
netif_rx_complete(netdev);
b44_enable_ints(bp);
}
+ if ((bp->core_unit == 1) && (bp->istat & (ISTAT_TX | ISTAT_RX)))
+ __b44_set_timeout(bp, (bp->istat & ISTAT_TX) ? 1 : 0);
+
return (done ? 0 : 1);
}
+
static irqreturn_t b44_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
struct net_device *dev = dev_id;
@@ -832,6 +962,18 @@
*/
istat &= imask;
if (istat) {
+ /* Workaround for the WL-500g WAN port hang */
+ if (istat & (ISTAT_TO | ISTAT_ERRORS)) {
+ /*
+ * no rx before the watchdog timeout
+ * reset the interface
+ */
+ __b44_reset(bp);
+ }
+
+ if ((bp->core_unit == 1) && (bp->istat & (ISTAT_TX | ISTAT_RX)))
+ __b44_set_timeout(bp, (bp->istat & ISTAT_TX) ? 1 : 0);
+
handled = 1;
if (netif_rx_schedule_prep(dev)) {
/* NOTE: These writes are posted by the readback of
@@ -848,6 +990,7 @@
bw32(B44_ISTAT, istat);
br32(B44_ISTAT);
}
+
spin_unlock_irqrestore(&bp->lock, flags);
return IRQ_RETVAL(handled);
}
@@ -859,16 +1002,7 @@
printk(KERN_ERR PFX "%s: transmit timed out, resetting\n",
dev->name);
- spin_lock_irq(&bp->lock);
-
- b44_halt(bp);
- b44_init_rings(bp);
- b44_init_hw(bp);
-
- spin_unlock_irq(&bp->lock);
-
- b44_enable_ints(bp);
-
+ __b44_reset(bp);
netif_wake_queue(dev);
}
@@ -1092,6 +1226,8 @@
/* bp->lock is held. */
static void b44_chip_reset(struct b44 *bp)
{
@ -236,7 +374,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
if (ssb_is_core_up(bp)) {
bw32(B44_RCV_LAZY, 0);
bw32(B44_ENET_CTRL, ENET_CTRL_DISABLE);
@@ -1105,9 +1223,10 @@
@@ -1105,9 +1241,10 @@
bw32(B44_DMARX_CTRL, 0);
bp->rx_prod = bp->rx_cons = 0;
} else {
@ -250,7 +388,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
}
ssb_core_reset(bp);
@@ -1115,6 +1234,11 @@
@@ -1115,6 +1252,11 @@
b44_clear_stats(bp);
/* Make PHY accessible. */
@ -262,7 +400,28 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
bw32(B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
(0x0d & MDIO_CTRL_MAXF_MASK)));
br32(B44_MDIO_CTRL);
@@ -1628,7 +1752,7 @@
@@ -1215,6 +1357,8 @@
struct b44 *bp = dev->priv;
int err;
+ netif_carrier_off(dev);
+
err = b44_alloc_consistent(bp);
if (err)
return err;
@@ -1235,9 +1379,10 @@
bp->timer.expires = jiffies + HZ;
bp->timer.data = (unsigned long) bp;
bp->timer.function = b44_timer;
- add_timer(&bp->timer);
+ b44_timer((unsigned long) bp);
b44_enable_ints(bp);
+ netif_start_queue(dev);
return 0;
@@ -1628,7 +1773,7 @@
u32 mii_regval;
spin_lock_irq(&bp->lock);
@ -271,7 +430,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
spin_unlock_irq(&bp->lock);
data->val_out = mii_regval;
@@ -1641,7 +1765,7 @@
@@ -1641,7 +1786,7 @@
return -EPERM;
spin_lock_irq(&bp->lock);
@ -280,7 +439,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
spin_unlock_irq(&bp->lock);
return err;
@@ -1668,21 +1792,52 @@
@@ -1668,21 +1813,52 @@
static int __devinit b44_get_invariants(struct b44 *bp)
{
u8 eeprom[128];
@ -291,39 +450,41 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
- err = b44_read_eeprom(bp, &eeprom[0]);
- if (err)
- goto out;
+ if (bp->pdev->device == PCI_DEVICE_ID_BCM4713) {
+ /*
+ * BCM47xx boards don't have a EEPROM. The MAC is stored in
+ * a NVRAM area somewhere in the flash memory.
+ */
+ sprintf(buf, "et%dmacaddr", b44_4713_instance);
+ if (nvram_get(buf)) {
+ e_aton(nvram_get(buf), bp->dev->dev_addr);
+ } else {
+ /*
+ * Getting the MAC out of NVRAM failed. To make it work
+ * here, we simply rely on the bootloader to write the
+ * MAC into the CAM.
+ */
+ spin_lock_irqsave(&bp->lock, flags);
+ __b44_cam_read(bp, bp->dev->dev_addr, 0);
+ spin_unlock_irqrestore(&bp->lock, flags);
+ }
-
- bp->dev->dev_addr[0] = eeprom[79];
- bp->dev->dev_addr[1] = eeprom[78];
- bp->dev->dev_addr[2] = eeprom[81];
- bp->dev->dev_addr[3] = eeprom[80];
- bp->dev->dev_addr[4] = eeprom[83];
- bp->dev->dev_addr[5] = eeprom[82];
-
- bp->phy_addr = eeprom[90] & 0x1f;
- bp->mdc_port = (eeprom[90] >> 14) & 0x1;
+ if (bp->pdev->device == PCI_DEVICE_ID_BCM4713) {
+#ifdef CONFIG_BCM947XX
+ sprintf(buf, "et%dmacaddr", instance - 1);
+ e_aton(nvram_get(buf), bp->dev->dev_addr);
+
+ sprintf(buf, "et%dphyaddr", instance - 1);
+ bp->phy_addr = B44_PHY_ADDR_NO_PHY;
+#else
+ /*
+ * BCM47xx boards don't have a EEPROM. The MAC is stored in
+ * a NVRAM area somewhere in the flash memory. As we don't
+ * know the location and/or the format of the NVRAM area
+ * here, we simply rely on the bootloader to write the
+ * MAC into the CAM.
+ */
+ spin_lock_irqsave(&bp->lock, flags);
+ __b44_cam_read(bp, bp->dev->dev_addr, 0);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ /*
+ * BCM47xx boards don't have a PHY. Usually there is a switch
+ * chip with multiple PHYs connected to the PHY port.
+ */
+ bp->phy_addr = B44_PHY_ADDR_NO_PHY;
+#endif
+ bp->dma_offset = 0;
+ } else {
+ err = b44_read_eeprom(bp, &eeprom[0]);
@ -344,7 +505,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
/* With this, plus the rx_header prepended to the data by the
* hardware, we'll land the ethernet header on a 2-byte boundary.
@@ -1692,13 +1847,12 @@
@@ -1692,13 +1868,12 @@
bp->imask = IMASK_DEF;
bp->core_unit = ssb_core_unit(bp);
@ -360,7 +521,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
}
static int __devinit b44_init_one(struct pci_dev *pdev,
@@ -1710,6 +1864,10 @@
@@ -1710,6 +1885,10 @@
struct b44 *bp;
int err, i;
@ -371,7 +532,7 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
if (b44_version_printed++ == 0)
printk(KERN_INFO "%s", version);
@@ -1819,11 +1977,17 @@
@@ -1819,11 +1998,17 @@
pci_save_state(bp->pdev, bp->pci_cfg_state);
@ -391,8 +552,8 @@ diff -urN linux.old/drivers/net/b44.c linux.dev/drivers/net/b44.c
err_out_iounmap:
diff -urN linux.old/drivers/net/b44.h linux.dev/drivers/net/b44.h
--- linux.old/drivers/net/b44.h 2006-01-16 21:10:55.881912250 +0100
+++ linux.dev/drivers/net/b44.h 2006-01-16 21:02:38.018249750 +0100
--- linux.old/drivers/net/b44.h 2006-02-12 13:49:59.000000000 +0100
+++ linux.dev/drivers/net/b44.h 2006-01-24 20:52:08.000000000 +0100
@@ -229,8 +229,6 @@
#define SBIPSFLAG_IMASK4 0x3f000000 /* Which sbflags --> mips interrupt 4 */
#define SBIPSFLAG_ISHIFT4 24
@ -412,9 +573,9 @@ diff -urN linux.old/drivers/net/b44.h linux.dev/drivers/net/b44.h
/* SW copy of device statistics, kept up to date by periodic timer
* which probes HW values. Must have same relative layout as HW
diff -urN linux.old/include/linux/pci_ids.h linux.dev/include/linux/pci_ids.h
--- linux.old/include/linux/pci_ids.h 2006-01-16 21:10:55.901913500 +0100
+++ linux.dev/include/linux/pci_ids.h 2006-01-16 21:02:38.034250750 +0100
@@ -1741,6 +1741,7 @@
--- linux.old/include/linux/pci_ids.h 2006-02-12 13:49:59.000000000 +0100
+++ linux.dev/include/linux/pci_ids.h 2006-01-24 20:52:08.000000000 +0100
@@ -1735,6 +1735,7 @@
#define PCI_DEVICE_ID_TIGON3_5901_2 0x170e
#define PCI_DEVICE_ID_BCM4401 0x4401
#define PCI_DEVICE_ID_BCM4401B0 0x4402