commit adba9e23b4066f1d741a2076fc6ad18b6c0cea44
author Stephen Hemminger <shemminger@osdl.org> Tue Nov 08 10:33:40 2005 -0800
committer Jeff Garzik <jgarzik@pobox.com> Tue Nov 08 23:58:07 2005 -0500
tree ca77fccedcc52d4b5850b2823a4e4ad5e840ddd1
parent 3133c5e896c0b2509e72ae0c2cb9452c80d47f46

[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>

drivers/net/skge.c

diff --git a/drivers/net/skge.c b/drivers/net/skge.c
index 572f121..fe806db 100644
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -2893,6 +2893,7 @@
  */
 static int skge_reset(struct skge_hw *hw)
 {
+	u32 reg;
 	u16 ctst;
 	u8 t8, mac_cfg, pmd_type, phy_type;
 	int i;
@@ -2971,6 +2972,7 @@
 		/* 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)) {
@@ -2978,6 +2980,14 @@
 			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);

drivers/net/skge.h

diff --git a/drivers/net/skge.h b/drivers/net/skge.h
index 72c175b..ee123c1 100644
--- 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