[patch 3/12] 3c905B fix

From: Andrew Morton (akpm@zip.com.au)
Date: Fri Aug 09 2002 - 19:56:42 EST


Patch from Zwane which fixes a transceiver problem on his 3c905B.

Apparently the 905B's MII status register is saying that it doesn't
need preamble, but the datasheet says that it does. So add a 905B
override for that in the device table.

This could break other 3c905B's. I don't know. There's only one way
to find out.

 3c59x.c | 11 +++++++----
 1 files changed, 7 insertions, 4 deletions

--- 2.5.30/drivers/net/3c59x.c~zwane-3c59x Fri Aug 9 17:36:40 2002
+++ 2.5.30-akpm/drivers/net/3c59x.c Fri Aug 9 17:36:40 2002
@@ -418,7 +418,8 @@ enum { IS_VORTEX=1, IS_BOOMERANG=2, IS_C
         EEPROM_8BIT=0x10, /* AKPM: Uses 0x230 as the base bitmaps for EEPROM reads */
         HAS_PWR_CTRL=0x20, HAS_MII=0x40, HAS_NWAY=0x80, HAS_CB_FNS=0x100,
         INVERT_MII_PWR=0x200, INVERT_LED_PWR=0x400, MAX_COLLISION_RESET=0x800,
- EEPROM_OFFSET=0x1000, HAS_HWCKSM=0x2000, WNO_XCVR_PWR=0x4000 };
+ EEPROM_OFFSET=0x1000, HAS_HWCKSM=0x2000, WNO_XCVR_PWR=0x4000,
+ EXTRA_PREAMBLE=0x8000, };
 
 enum vortex_chips {
         CH_3C590 = 0,
@@ -504,7 +505,7 @@ static struct vortex_chip_info {
         {"3c905 Boomerang 100baseT4",
          PCI_USES_IO|PCI_USES_MASTER, IS_BOOMERANG|HAS_MII, 64, },
         {"3c905B Cyclone 100baseTx",
- PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE|HAS_NWAY|HAS_HWCKSM, 128, },
+ PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE|HAS_NWAY|HAS_HWCKSM|EXTRA_PREAMBLE, 128, },
 
         {"3c905B Cyclone 10/100/BNC",
          PCI_USES_IO|PCI_USES_MASTER, IS_CYCLONE|HAS_NWAY|HAS_HWCKSM, 128, },
@@ -1281,6 +1282,8 @@ static int __devinit vortex_probe1(struc
                 int phy, phy_idx = 0;
                 EL3WINDOW(4);
                 mii_preamble_required++;
+ if (vp->drv_flags & EXTRA_PREAMBLE)
+ mii_preamble_required++;
                 mdio_sync(ioaddr, 32);
                 mdio_read(dev, 24, 1);
                 for (phy = 0; phy < 32 && phy_idx < 1; phy++) {
@@ -1297,8 +1300,8 @@ static int __devinit vortex_probe1(struc
                         else
                                 phyx = phy;
                         mii_status = mdio_read(dev, phyx, 1);
- printk("phy=%d, phyx=%d, mii_status=0x%04x\n",
- phy, phyx, mii_status);
+ printk("phy=%d, phyx=%d, mii_status=0x%04x\n",
+ phy, phyx, mii_status);
                         if (mii_status && mii_status != 0xffff) {
                                 vp->phys[phy_idx++] = phyx;
                                 if (print_info) {

.
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