Esempio n. 1
0
/**
 *  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;
}
Esempio n. 2
0
/**
 *  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;
}