/**
* e1000_setup_copper_link_82540 - Configure copper link settings
* @hw: pointer to the HW structure
*
* Calls the appropriate function to configure the link for auto-neg or forced
* speed and duplex. Then we check for link, once link is established calls
* to configure collision distance and flow control are called. If link is
* not established, we return -E1000_ERR_PHY (-2).
**/
static s32 e1000_setup_copper_link_82540(struct e1000_hw *hw)
{
u32 ctrl;
s32 ret_val;
u16 data;
DEBUGFUNC("e1000_setup_copper_link_82540");
ctrl = E1000_READ_REG(hw, E1000_CTRL);
ctrl |= E1000_CTRL_SLU;
ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
ret_val = e1000_set_phy_mode_82540(hw);
if (ret_val)
goto out;
if (hw->mac.type == e1000_82545_rev_3 ||
hw->mac.type == e1000_82546_rev_3) {
ret_val = hw->phy.ops.read_reg(hw, M88E1000_PHY_SPEC_CTRL,
&data);
if (ret_val)
goto out;
data |= 0x00000008;
ret_val = hw->phy.ops.write_reg(hw, M88E1000_PHY_SPEC_CTRL,
data);
if (ret_val)
goto out;
}
ret_val = e1000_copper_link_setup_m88(hw);
if (ret_val)
goto out;
ret_val = e1000_setup_copper_link_generic(hw);
out:
return ret_val;
}
/**
* e1000_setup_copper_link_82543 - Configure copper link settings
* @hw: pointer to the HW structure
*
* Configures the link for auto-neg or forced speed and duplex. Then we check
* for link, once link is established calls to configure collision distance
* and flow control are called.
**/
static s32 e1000_setup_copper_link_82543(struct e1000_hw *hw)
{
u32 ctrl;
s32 ret_val;
bool link;
DEBUGFUNC("e1000_setup_copper_link_82543");
ctrl = E1000_READ_REG(hw, E1000_CTRL) | E1000_CTRL_SLU;
/*
* With 82543, we need to force speed and duplex on the MAC
* equal to what the PHY speed and duplex configuration is.
* In addition, we need to perform a hardware reset on the
* PHY to take it out of reset.
*/
if (hw->mac.type == e1000_82543) {
ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
ret_val = hw->phy.ops.reset(hw);
if (ret_val)
goto out;
hw->phy.reset_disable = FALSE;
} else {
ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
}
/* Set MDI/MDI-X, Polarity Reversal, and downshift settings */
ret_val = e1000_copper_link_setup_m88(hw);
if (ret_val)
goto out;
if (hw->mac.autoneg) {
/*
* Setup autoneg and flow control advertisement and perform
* autonegotiation.
*/
ret_val = e1000_copper_link_autoneg(hw);
if (ret_val)
goto out;
} else {
/*
* PHY will be set to 10H, 10F, 100H or 100F
* depending on user settings.
*/
DEBUGOUT("Forcing Speed and Duplex\n");
ret_val = e1000_phy_force_speed_duplex_82543(hw);
if (ret_val) {
DEBUGOUT("Error Forcing Speed and Duplex\n");
goto out;
}
}
/*
* Check link status. Wait up to 100 microseconds for link to become
* valid.
*/
ret_val = e1000_phy_has_link_generic(hw,
COPPER_LINK_UP_LIMIT,
10,
&link);
if (ret_val)
goto out;
if (link) {
DEBUGOUT("Valid link established!!!\n");
/* Config the MAC and PHY after link is up */
if (hw->mac.type == e1000_82544) {
e1000_config_collision_dist_generic(hw);
} else {
ret_val = e1000_config_mac_to_phy_82543(hw);
if (ret_val)
goto out;
}
ret_val = e1000_config_fc_after_link_up_generic(hw);
} else {
DEBUGOUT("Unable to establish link!!!\n");
}
out:
return ret_val;
}