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

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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>
This commit is contained in:
Stephen Hemminger 2005-11-08 10:33:40 -08:00 committed by Jeff Garzik
parent 3133c5e896
commit adba9e23b4
2 changed files with 12 additions and 0 deletions
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10
drivers/net/skge.c
View file

@ -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;
@ -2971,6 +2972,7 @@ 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)) {
@ -2978,6 +2980,14 @@ static int skge_reset(struct skge_hw *hw)
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);

2
drivers/net/skge.h
View file

@ -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