[PATCH] skge: clear PCI PHY COMA mode on boot

When skge is booted up, the PHY may be stuck in power down state by the previous OS. So we may need to turn it on. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
git-mirror · Nov 9, 2005 · adba9e2 · adba9e2
1 parent 3133c5e
commit adba9e2
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Showing 2 changed files with 12 additions and 0 deletions.
diff --git a/drivers/net/skge.c b/drivers/net/skge.c
@@ -2893,6 +2893,7 @@ static const char *skge_board_name(const struct skge_hw *hw)
  */
 static int skge_reset(struct skge_hw *hw)
 {
+	u32 reg;
 	u16 ctst;
 	u8 t8, mac_cfg, pmd_type, phy_type;
 	int i;
@@ -2971,13 +2972,22 @@ static int skge_reset(struct skge_hw *hw)
 		/* switch power to VCC (WA for VAUX problem) */
 		skge_write8(hw, B0_POWER_CTRL,
 			    PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
+
 		/* avoid boards with stuck Hardware error bits */
 		if ((skge_read32(hw, B0_ISRC) & IS_HW_ERR) &&
 		    (skge_read32(hw, B0_HWE_ISRC) & IS_IRQ_SENSOR)) {
 			printk(KERN_WARNING PFX "stuck hardware sensor bit\n");
 			hw->intr_mask &= ~IS_HW_ERR;
 		}
 
+		/* Clear PHY COMA */
+		skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+		pci_read_config_dword(hw->pdev, PCI_DEV_REG1, &reg);
+		reg &= ~PCI_PHY_COMA;
+		pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg);
+		skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+
+
 		for (i = 0; i < hw->ports; i++) {
 			skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
 			skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);

diff --git a/drivers/net/skge.h b/drivers/net/skge.h
@@ -6,6 +6,8 @@
 
 /* PCI config registers */
 #define PCI_DEV_REG1	0x40
+#define  PCI_PHY_COMA	0x8000000
+#define  PCI_VIO	0x2000000
 #define PCI_DEV_REG2	0x44
 #define  PCI_REV_DESC	 0x4