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openwrt-xburst/target/linux/brcm-2.4/patches/008-b44_bcm47xx_support.patch
florian 55877ca580 [brcm-2.4] update to 2.4.37, tested on wrt54gs (#4766) 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@16144 3c298f89-4303-0410-b956-a3cf2f4a3e73
2009-05-28 15:55:54 +00:00

581 lines
15 KiB
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--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -1,7 +1,9 @@
/* b44.c: Broadcom 4400 device driver.
*
* Copyright (C) 2002 David S. Miller (davem@redhat.com)
- * Fixed by Pekka Pietikainen (pp@ee.oulu.fi)
+ * Copyright (C) 2004 Pekka Pietikainen (pp@ee.oulu.fi)
+ * Copyright (C) 2004 Florian Schirmer (jolt@tuxbox.org)
+ * Copyright (C) 2006 Felix Fietkau (nbd@openwrt.org)
*
* Distribute under GPL.
*/
@@ -25,6 +27,39 @@
#include "b44.h"
+#include <typedefs.h>
+#include <bcmdevs.h>
+#include <osl.h>
+#include <bcmnvram.h>
+#include <sbconfig.h>
+#include <sbchipc.h>
+#include <sflash.h>
+
+#ifdef CONFIG_BCM947XX
+#define atoi(str) simple_strtoul(((str != NULL) ? str : ""), NULL, 0)
+
+static inline void e_aton(char *str, char *dest)
+{
+ int i = 0;
+ u16 *d = (u16 *) dest;
+
+ if (str == NULL) {
+ memset(dest, 0, 6);
+ return;
+ }
+
+ for (;;) {
+ dest[i++] = (char) simple_strtoul(str, NULL, 16);
+ str += 2;
+ if (!*str++ || i == 6)
+ break;
+ }
+}
+
+static int instance = 0;
+#endif
+
+
#define DRV_MODULE_NAME "b44"
#define PFX DRV_MODULE_NAME ": "
#define DRV_MODULE_VERSION "0.93"
@@ -75,7 +110,7 @@ static char version[] __devinitdata =
DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
MODULE_AUTHOR("David S. Miller (davem@redhat.com)");
-MODULE_DESCRIPTION("Broadcom 4400 10/100 PCI ethernet driver");
+MODULE_DESCRIPTION("Broadcom 4400/47xx 10/100 PCI ethernet driver");
MODULE_LICENSE("GPL");
MODULE_PARM(b44_debug, "i");
MODULE_PARM_DESC(b44_debug, "B44 bitmapped debugging message enable value");
@@ -89,6 +124,8 @@ static struct pci_device_id b44_pci_tbl[
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
{ PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4401B1,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
+ { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_BCM4713,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
{ } /* terminate list with empty entry */
};
@@ -113,11 +150,13 @@ static int b44_wait_bit(struct b44 *bp,
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 +275,8 @@ static void ssb_core_reset(struct b44 *b
udelay(1);
}
+static int b44_4713_instance;
+
static int ssb_core_unit(struct b44 *bp)
{
#if 0
@@ -258,6 +299,9 @@ static int ssb_core_unit(struct b44 *bp)
break;
};
#endif
+ if (bp->pdev->device == PCI_DEVICE_ID_BCM4713)
+ return b44_4713_instance++;
+ else
return 0;
}
@@ -267,6 +311,28 @@ static int ssb_is_core_up(struct b44 *bp
== SBTMSLOW_CLOCK);
}
+static inline void __b44_cam_read(struct b44 *bp, unsigned char *data, int index)
+{
+ u32 val;
+
+ bw32(B44_CAM_CTRL, (CAM_CTRL_READ |
+ (index << CAM_CTRL_INDEX_SHIFT)));
+
+ b44_wait_bit(bp, B44_CAM_CTRL, CAM_CTRL_BUSY, 100, 1);
+
+ val = br32(B44_CAM_DATA_LO);
+
+ data[2] = (val >> 24) & 0xFF;
+ data[3] = (val >> 16) & 0xFF;
+ data[4] = (val >> 8) & 0xFF;
+ data[5] = (val >> 0) & 0xFF;
+
+ val = br32(B44_CAM_DATA_HI);
+
+ data[0] = (val >> 8) & 0xFF;
+ data[1] = (val >> 0) & 0xFF;
+}
+
static void __b44_cam_write(struct b44 *bp, unsigned char *data, int index)
{
u32 val;
@@ -287,7 +353,7 @@ static void __b44_cam_write(struct b44 *
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 +369,14 @@ static void b44_enable_ints(struct b44 *
bw32(B44_IMASK, bp->imask);
}
-static int b44_readphy(struct b44 *bp, int reg, u32 *val)
+static int __b44_readphy(struct b44 *bp, int phy_addr, int reg, u32 *val)
{
int err;
bw32(B44_EMAC_ISTAT, EMAC_INT_MII);
bw32(B44_MDIO_DATA, (MDIO_DATA_SB_START |
(MDIO_OP_READ << MDIO_DATA_OP_SHIFT) |
- (bp->phy_addr << MDIO_DATA_PMD_SHIFT) |
+ (phy_addr << MDIO_DATA_PMD_SHIFT) |
(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 @@ static int b44_readphy(struct b44 *bp, i
return err;
}
-static int b44_writephy(struct b44 *bp, int reg, u32 val)
+static int b44_readphy(struct b44 *bp, int reg, u32 *val)
+{
+ if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
+ return 0;
+
+ return __b44_readphy(bp, bp->phy_addr, reg, val);
+}
+
+static int __b44_writephy(struct b44 *bp, int phy_addr, int reg, u32 val)
{
bw32(B44_EMAC_ISTAT, EMAC_INT_MII);
bw32(B44_MDIO_DATA, (MDIO_DATA_SB_START |
(MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) |
- (bp->phy_addr << MDIO_DATA_PMD_SHIFT) |
+ (phy_addr << MDIO_DATA_PMD_SHIFT) |
(reg << MDIO_DATA_RA_SHIFT) |
(MDIO_TA_VALID << MDIO_DATA_TA_SHIFT) |
(val & MDIO_DATA_DATA)));
return b44_wait_bit(bp, B44_EMAC_ISTAT, EMAC_INT_MII, 100, 0);
}
+static int b44_writephy(struct b44 *bp, int reg, u32 val)
+{
+ if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
+ return 0;
+
+ return __b44_writephy(bp, bp->phy_addr, reg, val);
+}
+
static int b44_phy_reset(struct b44 *bp)
{
u32 val;
int err;
+ if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
+ return 0;
+
err = b44_writephy(bp, MII_BMCR, BMCR_RESET);
if (err)
return err;
@@ -406,6 +491,23 @@ static int b44_setup_phy(struct b44 *bp)
u32 val;
int err;
+
+ /*
+ * workaround for bad hardware design in Linksys WAP54G v1.0
+ * see https://dev.openwrt.org/ticket/146
+ * check and reset bit "isolate"
+ */
+ if ((bp->pdev->device == PCI_DEVICE_ID_BCM4713) &&
+ (atoi(nvram_get("boardnum")) == 2) &&
+ (__b44_readphy(bp, 0, MII_BMCR, &val) == 0) &&
+ (val & BMCR_ISOLATE) &&
+ (__b44_writephy(bp, 0, MII_BMCR, val & ~BMCR_ISOLATE) != 0)) {
+ printk(KERN_WARNING PFX "PHY: cannot reset MII transceiver isolate bit.\n");
+ }
+
+ if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
+ return 0;
+
if ((err = b44_readphy(bp, B44_MII_ALEDCTRL, &val)) != 0)
goto out;
if ((err = b44_writephy(bp, B44_MII_ALEDCTRL,
@@ -498,6 +600,19 @@ static void b44_check_phy(struct b44 *bp
{
u32 bmsr, aux;
+ if (bp->phy_addr == B44_PHY_ADDR_NO_PHY) {
+ bp->flags |= B44_FLAG_100_BASE_T;
+ bp->flags |= B44_FLAG_FULL_DUPLEX;
+ if (!netif_carrier_ok(bp->dev)) {
+ u32 val = br32(B44_TX_CTRL);
+ val |= TX_CTRL_DUPLEX;
+ bw32(B44_TX_CTRL, val);
+ netif_carrier_on(bp->dev);
+ b44_link_report(bp);
+ }
+ return;
+ }
+
if (!b44_readphy(bp, MII_BMSR, &bmsr) &&
!b44_readphy(bp, B44_MII_AUXCTRL, &aux) &&
(bmsr != 0xffff)) {
@@ -765,6 +880,25 @@ static int b44_rx(struct b44 *bp, int bu
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 +906,13 @@ static int b44_poll(struct net_device *n
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 +930,18 @@ static int b44_poll(struct net_device *n
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 +960,18 @@ static irqreturn_t b44_interrupt(int irq
*/
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 +988,7 @@ static irqreturn_t b44_interrupt(int irq
bw32(B44_ISTAT, istat);
br32(B44_ISTAT);
}
+
spin_unlock_irqrestore(&bp->lock, flags);
return IRQ_RETVAL(handled);
}
@@ -859,16 +1000,7 @@ static void b44_tx_timeout(struct net_de
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 +1224,8 @@ static void b44_clear_stats(struct b44 *
/* bp->lock is held. */
static void b44_chip_reset(struct b44 *bp)
{
+ unsigned int sb_clock;
+
if (ssb_is_core_up(bp)) {
bw32(B44_RCV_LAZY, 0);
bw32(B44_ENET_CTRL, ENET_CTRL_DISABLE);
@@ -1105,9 +1239,10 @@ static void b44_chip_reset(struct b44 *b
bw32(B44_DMARX_CTRL, 0);
bp->rx_prod = bp->rx_cons = 0;
} else {
- ssb_pci_setup(bp, (bp->core_unit == 0 ?
- SBINTVEC_ENET0 :
- SBINTVEC_ENET1));
+ /*if (bp->pdev->device != PCI_DEVICE_ID_BCM4713)*/
+ ssb_pci_setup(bp, (bp->core_unit == 0 ?
+ SBINTVEC_ENET0 :
+ SBINTVEC_ENET1));
}
ssb_core_reset(bp);
@@ -1115,6 +1250,11 @@ static void b44_chip_reset(struct b44 *b
b44_clear_stats(bp);
/* Make PHY accessible. */
+ if (bp->pdev->device == PCI_DEVICE_ID_BCM4713)
+ sb_clock = 100000000; /* 100 MHz */
+ else
+ sb_clock = 62500000; /* 62.5 MHz */
+
bw32(B44_MDIO_CTRL, (MDIO_CTRL_PREAMBLE |
(0x0d & MDIO_CTRL_MAXF_MASK)));
br32(B44_MDIO_CTRL);
@@ -1216,6 +1356,8 @@ static int b44_open(struct net_device *d
struct b44 *bp = dev->priv;
int err;
+ netif_carrier_off(dev);
+
err = b44_alloc_consistent(bp);
if (err)
return err;
@@ -1236,9 +1378,10 @@ static int b44_open(struct net_device *d
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;
@@ -1638,7 +1781,7 @@ static int b44_ioctl(struct net_device *
u32 mii_regval;
spin_lock_irq(&bp->lock);
- err = b44_readphy(bp, data->reg_num & 0x1f, &mii_regval);
+ err = __b44_readphy(bp, data->phy_id & 0x1f, data->reg_num & 0x1f, &mii_regval);
spin_unlock_irq(&bp->lock);
data->val_out = mii_regval;
@@ -1651,7 +1794,7 @@ static int b44_ioctl(struct net_device *
return -EPERM;
spin_lock_irq(&bp->lock);
- err = b44_writephy(bp, data->reg_num & 0x1f, data->val_in);
+ err = __b44_writephy(bp, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
spin_unlock_irq(&bp->lock);
return err;
@@ -1678,21 +1821,52 @@ static int b44_read_eeprom(struct b44 *b
static int __devinit b44_get_invariants(struct b44 *bp)
{
u8 eeprom[128];
+ u8 buf[32];
int err;
+ unsigned long flags;
- err = b44_read_eeprom(bp, &eeprom[0]);
- if (err)
- goto out;
-
- 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]);
+ if (err)
+ return err;
+
+ 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->dma_offset = SB_PCI_DMA;
+ bp->mdc_port = (eeprom[90] >> 14) & 0x1;
+ }
/* With this, plus the rx_header prepended to the data by the
* hardware, we'll land the ethernet header on a 2-byte boundary.
@@ -1702,13 +1876,12 @@ static int __devinit b44_get_invariants(
bp->imask = IMASK_DEF;
bp->core_unit = ssb_core_unit(bp);
- bp->dma_offset = ssb_get_addr(bp, SBID_PCI_DMA, 0);
/* XXX - really required?
bp->flags |= B44_FLAG_BUGGY_TXPTR;
*/
-out:
- return err;
+
+ return 0;
}
static int __devinit b44_init_one(struct pci_dev *pdev,
@@ -1720,6 +1893,10 @@ static int __devinit b44_init_one(struct
struct b44 *bp;
int err, i;
+#ifdef CONFIG_BCM947XX
+ instance++;
+#endif
+
if (b44_version_printed++ == 0)
printk(KERN_INFO "%s", version);
@@ -1834,11 +2011,17 @@ static int __devinit b44_init_one(struct
*/
b44_chip_reset(bp);
- printk(KERN_INFO "%s: Broadcom 4400 10/100BaseT Ethernet ", dev->name);
+ printk(KERN_INFO "%s: Broadcom %s 10/100BaseT Ethernet ", dev->name,
+ (pdev->device == PCI_DEVICE_ID_BCM4713) ? "47xx" : "4400");
for (i = 0; i < 6; i++)
printk("%2.2x%c", dev->dev_addr[i],
i == 5 ? '\n' : ':');
+ /* Initialize phy */
+ spin_lock_irq(&bp->lock);
+ b44_chip_reset(bp);
+ spin_unlock_irq(&bp->lock);
+
return 0;
err_out_iounmap:
--- a/drivers/net/b44.h
+++ b/drivers/net/b44.h
@@ -229,8 +229,6 @@
#define SBIPSFLAG_IMASK4 0x3f000000 /* Which sbflags --> mips interrupt 4 */
#define SBIPSFLAG_ISHIFT4 24
#define B44_SBTPSFLAG 0x0F18UL /* SB Target Port OCP Slave Flag */
-#define SBTPS_NUM0_MASK 0x0000003f
-#define SBTPS_F0EN0 0x00000040
#define B44_SBADMATCH3 0x0F60UL /* SB Address Match 3 */
#define B44_SBADMATCH2 0x0F68UL /* SB Address Match 2 */
#define B44_SBADMATCH1 0x0F70UL /* SB Address Match 1 */
@@ -461,6 +459,8 @@ struct ring_info {
};
#define B44_MCAST_TABLE_SIZE 32
+#define B44_PHY_ADDR_NO_PHY 30
+#define B44_MDC_RATIO 5000000
/* SW copy of device statistics, kept up to date by periodic timer
* which probes HW values. Must have same relative layout as HW
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1765,6 +1765,7 @@
#define PCI_DEVICE_ID_TIGON3_5901_2 0x170e
#define PCI_DEVICE_ID_BCM4401 0x4401
#define PCI_DEVICE_ID_BCM4401B0 0x4402
+#define PCI_DEVICE_ID_BCM4713 0x4713
#define PCI_VENDOR_ID_ENE 0x1524
#define PCI_DEVICE_ID_ENE_1211 0x1211
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