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openwrt-xburst/package/linux/kernel-patches/309-b44-bcm47xx-support.patch
kaloz 525ea4a23f add backport of Jolt's b44 patch to support the bcm47xx 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@608 3c298f89-4303-0410-b956-a3cf2f4a3e73
2005-04-09 22:24:25 +00:00

302 lines
8.1 KiB
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This patch adds BCM47xx support for the B44 driver. It has been backported
from Florian Schirmer's 2.6 port.
Imre Kaloz <kaloz@dune.hu>
diff -Nur linux-2.4.29/drivers/net/b44.c linux-2.4.29-b44/drivers/net/b44.c
--- linux-2.4.29/drivers/net/b44.c 2004-08-08 01:26:05.000000000 +0200
+++ linux-2.4.29-b44/drivers/net/b44.c 2005-04-09 10:17:33.000000000 +0200
@@ -1,7 +1,8 @@
/* 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)
*
* Distribute under GPL.
*/
@@ -25,6 +26,16 @@
#include "b44.h"
+#include <typedefs.h>
+#include <bcmdevs.h>
+#include <bcmutils.h>
+#include <osl.h>
+#include <bcmutils.h>
+#include <bcmnvram.h>
+#include <sbconfig.h>
+#include <sbchipc.h>
+#include <sflash.h>
+
#define DRV_MODULE_NAME "b44"
#define PFX DRV_MODULE_NAME ": "
#define DRV_MODULE_VERSION "0.93"
@@ -75,7 +86,7 @@
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 +100,8 @@
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 */
};
@@ -236,6 +249,8 @@
udelay(1);
}
+static int b44_4713_instance;
+
static int ssb_core_unit(struct b44 *bp)
{
#if 0
@@ -258,6 +273,9 @@
break;
};
#endif
+ if (bp->pdev->device == PCI_DEVICE_ID_BCM4713)
+ return b44_4713_instance++;
+ else
return 0;
}
@@ -267,6 +285,28 @@
== SBTMSLOW_CLOCK);
}
+static 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;
@@ -307,6 +347,9 @@
{
int err;
+ if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
+ return 0;
+
bw32(B44_EMAC_ISTAT, EMAC_INT_MII);
bw32(B44_MDIO_DATA, (MDIO_DATA_SB_START |
(MDIO_OP_READ << MDIO_DATA_OP_SHIFT) |
@@ -321,6 +364,9 @@
static int b44_writephy(struct b44 *bp, int reg, u32 val)
{
+ if (bp->phy_addr == B44_PHY_ADDR_NO_PHY)
+ return 0;
+
bw32(B44_EMAC_ISTAT, EMAC_INT_MII);
bw32(B44_MDIO_DATA, (MDIO_DATA_SB_START |
(MDIO_OP_WRITE << MDIO_DATA_OP_SHIFT) |
@@ -336,6 +382,9 @@
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 +455,9 @@
u32 val;
int err;
+ 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 +550,19 @@
{
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)) {
@@ -1092,6 +1157,8 @@
/* 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 +1172,10 @@
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 +1183,11 @@
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);
@@ -1669,20 +1742,42 @@
{
u8 eeprom[128];
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) {
+ /*
+ * 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;
+ 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.
@@ -1692,13 +1787,12 @@
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,
@@ -1819,7 +1913,8 @@
pci_save_state(bp->pdev, bp->pci_cfg_state);
- 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' : ':');
diff -Nur linux-2.4.29/drivers/net/b44.h linux-2.4.29-b44/drivers/net/b44.h
--- linux-2.4.29/drivers/net/b44.h 2003-08-25 13:44:42.000000000 +0200
+++ linux-2.4.29-b44/drivers/net/b44.h 2005-04-09 10:13:55.000000000 +0200
@@ -461,6 +461,8 @@
};
#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
diff -Nur linux-2.4.29/include/linux/pci_ids.h linux-2.4.29-b44/include/linux/pci_ids.h
--- linux-2.4.29/include/linux/pci_ids.h 2005-01-19 15:10:12.000000000 +0100
+++ linux-2.4.29-b44/include/linux/pci_ids.h 2005-04-09 10:13:55.000000000 +0200
@@ -1735,6 +1735,7 @@
#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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