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/*******************************************************************************
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Intel PRO/1000 Linux driver
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Copyright(c) 1999 - 2006 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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Linux NICS <linux.nics@intel.com>
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*/
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/* e1000_hw.c
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* Shared functions for accessing and configuring the MAC
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*/
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#include "e1000-2.6.35-ethercat.h"
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static s32 e1000_check_downshift(struct e1000_hw *hw);
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static s32 e1000_check_polarity(struct e1000_hw *hw,
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e1000_rev_polarity *polarity);
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static void e1000_clear_hw_cntrs(struct e1000_hw *hw);
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static void e1000_clear_vfta(struct e1000_hw *hw);
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static s32 e1000_config_dsp_after_link_change(struct e1000_hw *hw,
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bool link_up);
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static s32 e1000_config_fc_after_link_up(struct e1000_hw *hw);
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static s32 e1000_detect_gig_phy(struct e1000_hw *hw);
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static s32 e1000_get_auto_rd_done(struct e1000_hw *hw);
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static s32 e1000_get_cable_length(struct e1000_hw *hw, u16 *min_length,
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u16 *max_length);
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static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw);
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static s32 e1000_id_led_init(struct e1000_hw *hw);
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static void e1000_init_rx_addrs(struct e1000_hw *hw);
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static s32 e1000_phy_igp_get_info(struct e1000_hw *hw,
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struct e1000_phy_info *phy_info);
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static s32 e1000_phy_m88_get_info(struct e1000_hw *hw,
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struct e1000_phy_info *phy_info);
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static s32 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active);
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static s32 e1000_wait_autoneg(struct e1000_hw *hw);
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static void e1000_write_reg_io(struct e1000_hw *hw, u32 offset, u32 value);
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static s32 e1000_set_phy_type(struct e1000_hw *hw);
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static void e1000_phy_init_script(struct e1000_hw *hw);
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static s32 e1000_setup_copper_link(struct e1000_hw *hw);
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static s32 e1000_setup_fiber_serdes_link(struct e1000_hw *hw);
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static s32 e1000_adjust_serdes_amplitude(struct e1000_hw *hw);
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static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw);
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static s32 e1000_config_mac_to_phy(struct e1000_hw *hw);
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static void e1000_raise_mdi_clk(struct e1000_hw *hw, u32 *ctrl);
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static void e1000_lower_mdi_clk(struct e1000_hw *hw, u32 *ctrl);
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static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, u32 data, u16 count);
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static u16 e1000_shift_in_mdi_bits(struct e1000_hw *hw);
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static s32 e1000_phy_reset_dsp(struct e1000_hw *hw);
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static s32 e1000_write_eeprom_spi(struct e1000_hw *hw, u16 offset,
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u16 words, u16 *data);
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static s32 e1000_write_eeprom_microwire(struct e1000_hw *hw, u16 offset,
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u16 words, u16 *data);
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static s32 e1000_spi_eeprom_ready(struct e1000_hw *hw);
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static void e1000_raise_ee_clk(struct e1000_hw *hw, u32 *eecd);
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static void e1000_lower_ee_clk(struct e1000_hw *hw, u32 *eecd);
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static void e1000_shift_out_ee_bits(struct e1000_hw *hw, u16 data, u16 count);
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static s32 e1000_write_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr,
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u16 phy_data);
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static s32 e1000_read_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr,
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u16 *phy_data);
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static u16 e1000_shift_in_ee_bits(struct e1000_hw *hw, u16 count);
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static s32 e1000_acquire_eeprom(struct e1000_hw *hw);
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static void e1000_release_eeprom(struct e1000_hw *hw);
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static void e1000_standby_eeprom(struct e1000_hw *hw);
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static s32 e1000_set_vco_speed(struct e1000_hw *hw);
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static s32 e1000_polarity_reversal_workaround(struct e1000_hw *hw);
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static s32 e1000_set_phy_mode(struct e1000_hw *hw);
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static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
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u16 *data);
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static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
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u16 *data);
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/* IGP cable length table */
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static const
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u16 e1000_igp_cable_length_table[IGP01E1000_AGC_LENGTH_TABLE_SIZE] = {
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5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
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5, 10, 10, 10, 10, 10, 10, 10, 20, 20, 20, 20, 20, 25, 25, 25,
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25, 25, 25, 25, 30, 30, 30, 30, 40, 40, 40, 40, 40, 40, 40, 40,
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40, 50, 50, 50, 50, 50, 50, 50, 60, 60, 60, 60, 60, 60, 60, 60,
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60, 70, 70, 70, 70, 70, 70, 80, 80, 80, 80, 80, 80, 90, 90, 90,
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90, 90, 90, 90, 90, 90, 100, 100, 100, 100, 100, 100, 100, 100, 100,
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100,
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100, 100, 100, 100, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110,
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110, 110,
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110, 110, 110, 110, 110, 110, 120, 120, 120, 120, 120, 120, 120, 120,
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120, 120
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};
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static DEFINE_SPINLOCK(e1000_eeprom_lock);
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/**
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* e1000_set_phy_type - Set the phy type member in the hw struct.
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* @hw: Struct containing variables accessed by shared code
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*/
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static s32 e1000_set_phy_type(struct e1000_hw *hw)
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{
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e_dbg("e1000_set_phy_type");
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if (hw->mac_type == e1000_undefined)
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return -E1000_ERR_PHY_TYPE;
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switch (hw->phy_id) {
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case M88E1000_E_PHY_ID:
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case M88E1000_I_PHY_ID:
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case M88E1011_I_PHY_ID:
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case M88E1111_I_PHY_ID:
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hw->phy_type = e1000_phy_m88;
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break;
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case IGP01E1000_I_PHY_ID:
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if (hw->mac_type == e1000_82541 ||
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hw->mac_type == e1000_82541_rev_2 ||
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hw->mac_type == e1000_82547 ||
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hw->mac_type == e1000_82547_rev_2) {
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hw->phy_type = e1000_phy_igp;
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break;
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}
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default:
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/* Should never have loaded on this device */
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hw->phy_type = e1000_phy_undefined;
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return -E1000_ERR_PHY_TYPE;
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}
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return E1000_SUCCESS;
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}
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/**
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* e1000_phy_init_script - IGP phy init script - initializes the GbE PHY
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* @hw: Struct containing variables accessed by shared code
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*/
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static void e1000_phy_init_script(struct e1000_hw *hw)
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{
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u32 ret_val __attribute__ ((unused));
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u16 phy_saved_data;
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e_dbg("e1000_phy_init_script");
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if (hw->phy_init_script) {
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msleep(20);
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/* Save off the current value of register 0x2F5B to be restored at
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* the end of this routine. */
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ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
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/* Disabled the PHY transmitter */
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e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
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msleep(20);
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e1000_write_phy_reg(hw, 0x0000, 0x0140);
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msleep(5);
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switch (hw->mac_type) {
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case e1000_82541:
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case e1000_82547:
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e1000_write_phy_reg(hw, 0x1F95, 0x0001);
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e1000_write_phy_reg(hw, 0x1F71, 0xBD21);
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e1000_write_phy_reg(hw, 0x1F79, 0x0018);
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e1000_write_phy_reg(hw, 0x1F30, 0x1600);
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e1000_write_phy_reg(hw, 0x1F31, 0x0014);
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e1000_write_phy_reg(hw, 0x1F32, 0x161C);
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e1000_write_phy_reg(hw, 0x1F94, 0x0003);
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e1000_write_phy_reg(hw, 0x1F96, 0x003F);
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e1000_write_phy_reg(hw, 0x2010, 0x0008);
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break;
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case e1000_82541_rev_2:
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case e1000_82547_rev_2:
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e1000_write_phy_reg(hw, 0x1F73, 0x0099);
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break;
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default:
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break;
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}
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e1000_write_phy_reg(hw, 0x0000, 0x3300);
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msleep(20);
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/* Now enable the transmitter */
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e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
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if (hw->mac_type == e1000_82547) {
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u16 fused, fine, coarse;
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/* Move to analog registers page */
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e1000_read_phy_reg(hw,
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IGP01E1000_ANALOG_SPARE_FUSE_STATUS,
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&fused);
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if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
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e1000_read_phy_reg(hw,
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IGP01E1000_ANALOG_FUSE_STATUS,
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&fused);
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fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
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coarse =
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fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
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if (coarse >
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IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
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coarse -=
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IGP01E1000_ANALOG_FUSE_COARSE_10;
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fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
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} else if (coarse ==
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IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
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fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
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fused =
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(fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
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(fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
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(coarse &
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IGP01E1000_ANALOG_FUSE_COARSE_MASK);
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230 |
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e1000_write_phy_reg(hw,
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IGP01E1000_ANALOG_FUSE_CONTROL,
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fused);
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e1000_write_phy_reg(hw,
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IGP01E1000_ANALOG_FUSE_BYPASS,
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IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
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}
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}
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}
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}
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/**
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* e1000_set_mac_type - Set the mac type member in the hw struct.
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* @hw: Struct containing variables accessed by shared code
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*/
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s32 e1000_set_mac_type(struct e1000_hw *hw)
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{
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e_dbg("e1000_set_mac_type");
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249 |
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switch (hw->device_id) {
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case E1000_DEV_ID_82542:
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switch (hw->revision_id) {
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case E1000_82542_2_0_REV_ID:
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hw->mac_type = e1000_82542_rev2_0;
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break;
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case E1000_82542_2_1_REV_ID:
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hw->mac_type = e1000_82542_rev2_1;
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break;
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default:
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/* Invalid 82542 revision ID */
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return -E1000_ERR_MAC_TYPE;
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262 |
}
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263 |
break;
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case E1000_DEV_ID_82543GC_FIBER:
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case E1000_DEV_ID_82543GC_COPPER:
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hw->mac_type = e1000_82543;
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break;
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268 |
case E1000_DEV_ID_82544EI_COPPER:
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269 |
case E1000_DEV_ID_82544EI_FIBER:
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270 |
case E1000_DEV_ID_82544GC_COPPER:
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271 |
case E1000_DEV_ID_82544GC_LOM:
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hw->mac_type = e1000_82544;
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273 |
break;
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274 |
case E1000_DEV_ID_82540EM:
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275 |
case E1000_DEV_ID_82540EM_LOM:
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276 |
case E1000_DEV_ID_82540EP:
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277 |
case E1000_DEV_ID_82540EP_LOM:
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278 |
case E1000_DEV_ID_82540EP_LP:
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279 |
hw->mac_type = e1000_82540;
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280 |
break;
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281 |
case E1000_DEV_ID_82545EM_COPPER:
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282 |
case E1000_DEV_ID_82545EM_FIBER:
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283 |
hw->mac_type = e1000_82545;
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284 |
break;
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285 |
case E1000_DEV_ID_82545GM_COPPER:
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286 |
case E1000_DEV_ID_82545GM_FIBER:
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287 |
case E1000_DEV_ID_82545GM_SERDES:
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288 |
hw->mac_type = e1000_82545_rev_3;
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289 |
break;
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290 |
case E1000_DEV_ID_82546EB_COPPER:
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291 |
case E1000_DEV_ID_82546EB_FIBER:
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292 |
case E1000_DEV_ID_82546EB_QUAD_COPPER:
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293 |
hw->mac_type = e1000_82546;
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294 |
break;
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295 |
case E1000_DEV_ID_82546GB_COPPER:
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296 |
case E1000_DEV_ID_82546GB_FIBER:
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297 |
case E1000_DEV_ID_82546GB_SERDES:
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298 |
case E1000_DEV_ID_82546GB_PCIE:
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299 |
case E1000_DEV_ID_82546GB_QUAD_COPPER:
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300 |
case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
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301 |
hw->mac_type = e1000_82546_rev_3;
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302 |
break;
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303 |
case E1000_DEV_ID_82541EI:
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|
304 |
case E1000_DEV_ID_82541EI_MOBILE:
|
|
|
305 |
case E1000_DEV_ID_82541ER_LOM:
|
|
|
306 |
hw->mac_type = e1000_82541;
|
|
|
307 |
break;
|
|
|
308 |
case E1000_DEV_ID_82541ER:
|
|
|
309 |
case E1000_DEV_ID_82541GI:
|
|
|
310 |
case E1000_DEV_ID_82541GI_LF:
|
|
|
311 |
case E1000_DEV_ID_82541GI_MOBILE:
|
|
|
312 |
hw->mac_type = e1000_82541_rev_2;
|
|
|
313 |
break;
|
|
|
314 |
case E1000_DEV_ID_82547EI:
|
|
|
315 |
case E1000_DEV_ID_82547EI_MOBILE:
|
|
|
316 |
hw->mac_type = e1000_82547;
|
|
|
317 |
break;
|
|
|
318 |
case E1000_DEV_ID_82547GI:
|
|
|
319 |
hw->mac_type = e1000_82547_rev_2;
|
|
|
320 |
break;
|
|
|
321 |
default:
|
|
|
322 |
/* Should never have loaded on this device */
|
|
|
323 |
return -E1000_ERR_MAC_TYPE;
|
|
|
324 |
}
|
|
|
325 |
|
|
|
326 |
switch (hw->mac_type) {
|
|
|
327 |
case e1000_82541:
|
|
|
328 |
case e1000_82547:
|
|
|
329 |
case e1000_82541_rev_2:
|
|
|
330 |
case e1000_82547_rev_2:
|
|
|
331 |
hw->asf_firmware_present = true;
|
|
|
332 |
break;
|
|
|
333 |
default:
|
|
|
334 |
break;
|
|
|
335 |
}
|
|
|
336 |
|
|
|
337 |
/* The 82543 chip does not count tx_carrier_errors properly in
|
|
|
338 |
* FD mode
|
|
|
339 |
*/
|
|
|
340 |
if (hw->mac_type == e1000_82543)
|
|
|
341 |
hw->bad_tx_carr_stats_fd = true;
|
|
|
342 |
|
|
|
343 |
if (hw->mac_type > e1000_82544)
|
|
|
344 |
hw->has_smbus = true;
|
|
|
345 |
|
|
|
346 |
return E1000_SUCCESS;
|
|
|
347 |
}
|
|
|
348 |
|
|
|
349 |
/**
|
|
|
350 |
* e1000_set_media_type - Set media type and TBI compatibility.
|
|
|
351 |
* @hw: Struct containing variables accessed by shared code
|
|
|
352 |
*/
|
|
|
353 |
void e1000_set_media_type(struct e1000_hw *hw)
|
|
|
354 |
{
|
|
|
355 |
u32 status;
|
|
|
356 |
|
|
|
357 |
e_dbg("e1000_set_media_type");
|
|
|
358 |
|
|
|
359 |
if (hw->mac_type != e1000_82543) {
|
|
|
360 |
/* tbi_compatibility is only valid on 82543 */
|
|
|
361 |
hw->tbi_compatibility_en = false;
|
|
|
362 |
}
|
|
|
363 |
|
|
|
364 |
switch (hw->device_id) {
|
|
|
365 |
case E1000_DEV_ID_82545GM_SERDES:
|
|
|
366 |
case E1000_DEV_ID_82546GB_SERDES:
|
|
|
367 |
hw->media_type = e1000_media_type_internal_serdes;
|
|
|
368 |
break;
|
|
|
369 |
default:
|
|
|
370 |
switch (hw->mac_type) {
|
|
|
371 |
case e1000_82542_rev2_0:
|
|
|
372 |
case e1000_82542_rev2_1:
|
|
|
373 |
hw->media_type = e1000_media_type_fiber;
|
|
|
374 |
break;
|
|
|
375 |
default:
|
|
|
376 |
status = er32(STATUS);
|
|
|
377 |
if (status & E1000_STATUS_TBIMODE) {
|
|
|
378 |
hw->media_type = e1000_media_type_fiber;
|
|
|
379 |
/* tbi_compatibility not valid on fiber */
|
|
|
380 |
hw->tbi_compatibility_en = false;
|
|
|
381 |
} else {
|
|
|
382 |
hw->media_type = e1000_media_type_copper;
|
|
|
383 |
}
|
|
|
384 |
break;
|
|
|
385 |
}
|
|
|
386 |
}
|
|
|
387 |
}
|
|
|
388 |
|
|
|
389 |
/**
|
|
|
390 |
* e1000_reset_hw: reset the hardware completely
|
|
|
391 |
* @hw: Struct containing variables accessed by shared code
|
|
|
392 |
*
|
|
|
393 |
* Reset the transmit and receive units; mask and clear all interrupts.
|
|
|
394 |
*/
|
|
|
395 |
s32 e1000_reset_hw(struct e1000_hw *hw)
|
|
|
396 |
{
|
|
|
397 |
u32 ctrl;
|
|
|
398 |
u32 ctrl_ext;
|
|
|
399 |
u32 icr __attribute__ ((unused));
|
|
|
400 |
u32 manc;
|
|
|
401 |
u32 led_ctrl;
|
|
|
402 |
s32 ret_val;
|
|
|
403 |
|
|
|
404 |
e_dbg("e1000_reset_hw");
|
|
|
405 |
|
|
|
406 |
/* For 82542 (rev 2.0), disable MWI before issuing a device reset */
|
|
|
407 |
if (hw->mac_type == e1000_82542_rev2_0) {
|
|
|
408 |
e_dbg("Disabling MWI on 82542 rev 2.0\n");
|
|
|
409 |
e1000_pci_clear_mwi(hw);
|
|
|
410 |
}
|
|
|
411 |
|
|
|
412 |
/* Clear interrupt mask to stop board from generating interrupts */
|
|
|
413 |
e_dbg("Masking off all interrupts\n");
|
|
|
414 |
ew32(IMC, 0xffffffff);
|
|
|
415 |
|
|
|
416 |
/* Disable the Transmit and Receive units. Then delay to allow
|
|
|
417 |
* any pending transactions to complete before we hit the MAC with
|
|
|
418 |
* the global reset.
|
|
|
419 |
*/
|
|
|
420 |
ew32(RCTL, 0);
|
|
|
421 |
ew32(TCTL, E1000_TCTL_PSP);
|
|
|
422 |
E1000_WRITE_FLUSH();
|
|
|
423 |
|
|
|
424 |
/* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */
|
|
|
425 |
hw->tbi_compatibility_on = false;
|
|
|
426 |
|
|
|
427 |
/* Delay to allow any outstanding PCI transactions to complete before
|
|
|
428 |
* resetting the device
|
|
|
429 |
*/
|
|
|
430 |
msleep(10);
|
|
|
431 |
|
|
|
432 |
ctrl = er32(CTRL);
|
|
|
433 |
|
|
|
434 |
/* Must reset the PHY before resetting the MAC */
|
|
|
435 |
if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
|
|
|
436 |
ew32(CTRL, (ctrl | E1000_CTRL_PHY_RST));
|
|
|
437 |
msleep(5);
|
|
|
438 |
}
|
|
|
439 |
|
|
|
440 |
/* Issue a global reset to the MAC. This will reset the chip's
|
|
|
441 |
* transmit, receive, DMA, and link units. It will not effect
|
|
|
442 |
* the current PCI configuration. The global reset bit is self-
|
|
|
443 |
* clearing, and should clear within a microsecond.
|
|
|
444 |
*/
|
|
|
445 |
e_dbg("Issuing a global reset to MAC\n");
|
|
|
446 |
|
|
|
447 |
switch (hw->mac_type) {
|
|
|
448 |
case e1000_82544:
|
|
|
449 |
case e1000_82540:
|
|
|
450 |
case e1000_82545:
|
|
|
451 |
case e1000_82546:
|
|
|
452 |
case e1000_82541:
|
|
|
453 |
case e1000_82541_rev_2:
|
|
|
454 |
/* These controllers can't ack the 64-bit write when issuing the
|
|
|
455 |
* reset, so use IO-mapping as a workaround to issue the reset */
|
|
|
456 |
E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_RST));
|
|
|
457 |
break;
|
|
|
458 |
case e1000_82545_rev_3:
|
|
|
459 |
case e1000_82546_rev_3:
|
|
|
460 |
/* Reset is performed on a shadow of the control register */
|
|
|
461 |
ew32(CTRL_DUP, (ctrl | E1000_CTRL_RST));
|
|
|
462 |
break;
|
|
|
463 |
default:
|
|
|
464 |
ew32(CTRL, (ctrl | E1000_CTRL_RST));
|
|
|
465 |
break;
|
|
|
466 |
}
|
|
|
467 |
|
|
|
468 |
/* After MAC reset, force reload of EEPROM to restore power-on settings to
|
|
|
469 |
* device. Later controllers reload the EEPROM automatically, so just wait
|
|
|
470 |
* for reload to complete.
|
|
|
471 |
*/
|
|
|
472 |
switch (hw->mac_type) {
|
|
|
473 |
case e1000_82542_rev2_0:
|
|
|
474 |
case e1000_82542_rev2_1:
|
|
|
475 |
case e1000_82543:
|
|
|
476 |
case e1000_82544:
|
|
|
477 |
/* Wait for reset to complete */
|
|
|
478 |
udelay(10);
|
|
|
479 |
ctrl_ext = er32(CTRL_EXT);
|
|
|
480 |
ctrl_ext |= E1000_CTRL_EXT_EE_RST;
|
|
|
481 |
ew32(CTRL_EXT, ctrl_ext);
|
|
|
482 |
E1000_WRITE_FLUSH();
|
|
|
483 |
/* Wait for EEPROM reload */
|
|
|
484 |
msleep(2);
|
|
|
485 |
break;
|
|
|
486 |
case e1000_82541:
|
|
|
487 |
case e1000_82541_rev_2:
|
|
|
488 |
case e1000_82547:
|
|
|
489 |
case e1000_82547_rev_2:
|
|
|
490 |
/* Wait for EEPROM reload */
|
|
|
491 |
msleep(20);
|
|
|
492 |
break;
|
|
|
493 |
default:
|
|
|
494 |
/* Auto read done will delay 5ms or poll based on mac type */
|
|
|
495 |
ret_val = e1000_get_auto_rd_done(hw);
|
|
|
496 |
if (ret_val)
|
|
|
497 |
return ret_val;
|
|
|
498 |
break;
|
|
|
499 |
}
|
|
|
500 |
|
|
|
501 |
/* Disable HW ARPs on ASF enabled adapters */
|
|
|
502 |
if (hw->mac_type >= e1000_82540) {
|
|
|
503 |
manc = er32(MANC);
|
|
|
504 |
manc &= ~(E1000_MANC_ARP_EN);
|
|
|
505 |
ew32(MANC, manc);
|
|
|
506 |
}
|
|
|
507 |
|
|
|
508 |
if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
|
|
|
509 |
e1000_phy_init_script(hw);
|
|
|
510 |
|
|
|
511 |
/* Configure activity LED after PHY reset */
|
|
|
512 |
led_ctrl = er32(LEDCTL);
|
|
|
513 |
led_ctrl &= IGP_ACTIVITY_LED_MASK;
|
|
|
514 |
led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
|
|
|
515 |
ew32(LEDCTL, led_ctrl);
|
|
|
516 |
}
|
|
|
517 |
|
|
|
518 |
/* Clear interrupt mask to stop board from generating interrupts */
|
|
|
519 |
e_dbg("Masking off all interrupts\n");
|
|
|
520 |
ew32(IMC, 0xffffffff);
|
|
|
521 |
|
|
|
522 |
/* Clear any pending interrupt events. */
|
|
|
523 |
icr = er32(ICR);
|
|
|
524 |
|
|
|
525 |
/* If MWI was previously enabled, reenable it. */
|
|
|
526 |
if (hw->mac_type == e1000_82542_rev2_0) {
|
|
|
527 |
if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
|
|
|
528 |
e1000_pci_set_mwi(hw);
|
|
|
529 |
}
|
|
|
530 |
|
|
|
531 |
return E1000_SUCCESS;
|
|
|
532 |
}
|
|
|
533 |
|
|
|
534 |
/**
|
|
|
535 |
* e1000_init_hw: Performs basic configuration of the adapter.
|
|
|
536 |
* @hw: Struct containing variables accessed by shared code
|
|
|
537 |
*
|
|
|
538 |
* Assumes that the controller has previously been reset and is in a
|
|
|
539 |
* post-reset uninitialized state. Initializes the receive address registers,
|
|
|
540 |
* multicast table, and VLAN filter table. Calls routines to setup link
|
|
|
541 |
* configuration and flow control settings. Clears all on-chip counters. Leaves
|
|
|
542 |
* the transmit and receive units disabled and uninitialized.
|
|
|
543 |
*/
|
|
|
544 |
s32 e1000_init_hw(struct e1000_hw *hw)
|
|
|
545 |
{
|
|
|
546 |
u32 ctrl;
|
|
|
547 |
u32 i;
|
|
|
548 |
s32 ret_val;
|
|
|
549 |
u32 mta_size;
|
|
|
550 |
u32 ctrl_ext;
|
|
|
551 |
|
|
|
552 |
e_dbg("e1000_init_hw");
|
|
|
553 |
|
|
|
554 |
/* Initialize Identification LED */
|
|
|
555 |
ret_val = e1000_id_led_init(hw);
|
|
|
556 |
if (ret_val) {
|
|
|
557 |
e_dbg("Error Initializing Identification LED\n");
|
|
|
558 |
return ret_val;
|
|
|
559 |
}
|
|
|
560 |
|
|
|
561 |
/* Set the media type and TBI compatibility */
|
|
|
562 |
e1000_set_media_type(hw);
|
|
|
563 |
|
|
|
564 |
/* Disabling VLAN filtering. */
|
|
|
565 |
e_dbg("Initializing the IEEE VLAN\n");
|
|
|
566 |
if (hw->mac_type < e1000_82545_rev_3)
|
|
|
567 |
ew32(VET, 0);
|
|
|
568 |
e1000_clear_vfta(hw);
|
|
|
569 |
|
|
|
570 |
/* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
|
|
|
571 |
if (hw->mac_type == e1000_82542_rev2_0) {
|
|
|
572 |
e_dbg("Disabling MWI on 82542 rev 2.0\n");
|
|
|
573 |
e1000_pci_clear_mwi(hw);
|
|
|
574 |
ew32(RCTL, E1000_RCTL_RST);
|
|
|
575 |
E1000_WRITE_FLUSH();
|
|
|
576 |
msleep(5);
|
|
|
577 |
}
|
|
|
578 |
|
|
|
579 |
/* Setup the receive address. This involves initializing all of the Receive
|
|
|
580 |
* Address Registers (RARs 0 - 15).
|
|
|
581 |
*/
|
|
|
582 |
e1000_init_rx_addrs(hw);
|
|
|
583 |
|
|
|
584 |
/* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
|
|
|
585 |
if (hw->mac_type == e1000_82542_rev2_0) {
|
|
|
586 |
ew32(RCTL, 0);
|
|
|
587 |
E1000_WRITE_FLUSH();
|
|
|
588 |
msleep(1);
|
|
|
589 |
if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
|
|
|
590 |
e1000_pci_set_mwi(hw);
|
|
|
591 |
}
|
|
|
592 |
|
|
|
593 |
/* Zero out the Multicast HASH table */
|
|
|
594 |
e_dbg("Zeroing the MTA\n");
|
|
|
595 |
mta_size = E1000_MC_TBL_SIZE;
|
|
|
596 |
for (i = 0; i < mta_size; i++) {
|
|
|
597 |
E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
|
|
|
598 |
/* use write flush to prevent Memory Write Block (MWB) from
|
|
|
599 |
* occurring when accessing our register space */
|
|
|
600 |
E1000_WRITE_FLUSH();
|
|
|
601 |
}
|
|
|
602 |
|
|
|
603 |
/* Set the PCI priority bit correctly in the CTRL register. This
|
|
|
604 |
* determines if the adapter gives priority to receives, or if it
|
|
|
605 |
* gives equal priority to transmits and receives. Valid only on
|
|
|
606 |
* 82542 and 82543 silicon.
|
|
|
607 |
*/
|
|
|
608 |
if (hw->dma_fairness && hw->mac_type <= e1000_82543) {
|
|
|
609 |
ctrl = er32(CTRL);
|
|
|
610 |
ew32(CTRL, ctrl | E1000_CTRL_PRIOR);
|
|
|
611 |
}
|
|
|
612 |
|
|
|
613 |
switch (hw->mac_type) {
|
|
|
614 |
case e1000_82545_rev_3:
|
|
|
615 |
case e1000_82546_rev_3:
|
|
|
616 |
break;
|
|
|
617 |
default:
|
|
|
618 |
/* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */
|
|
|
619 |
if (hw->bus_type == e1000_bus_type_pcix
|
|
|
620 |
&& e1000_pcix_get_mmrbc(hw) > 2048)
|
|
|
621 |
e1000_pcix_set_mmrbc(hw, 2048);
|
|
|
622 |
break;
|
|
|
623 |
}
|
|
|
624 |
|
|
|
625 |
/* Call a subroutine to configure the link and setup flow control. */
|
|
|
626 |
ret_val = e1000_setup_link(hw);
|
|
|
627 |
|
|
|
628 |
/* Set the transmit descriptor write-back policy */
|
|
|
629 |
if (hw->mac_type > e1000_82544) {
|
|
|
630 |
ctrl = er32(TXDCTL);
|
|
|
631 |
ctrl =
|
|
|
632 |
(ctrl & ~E1000_TXDCTL_WTHRESH) |
|
|
|
633 |
E1000_TXDCTL_FULL_TX_DESC_WB;
|
|
|
634 |
ew32(TXDCTL, ctrl);
|
|
|
635 |
}
|
|
|
636 |
|
|
|
637 |
/* Clear all of the statistics registers (clear on read). It is
|
|
|
638 |
* important that we do this after we have tried to establish link
|
|
|
639 |
* because the symbol error count will increment wildly if there
|
|
|
640 |
* is no link.
|
|
|
641 |
*/
|
|
|
642 |
e1000_clear_hw_cntrs(hw);
|
|
|
643 |
|
|
|
644 |
if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER ||
|
|
|
645 |
hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) {
|
|
|
646 |
ctrl_ext = er32(CTRL_EXT);
|
|
|
647 |
/* Relaxed ordering must be disabled to avoid a parity
|
|
|
648 |
* error crash in a PCI slot. */
|
|
|
649 |
ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
|
|
|
650 |
ew32(CTRL_EXT, ctrl_ext);
|
|
|
651 |
}
|
|
|
652 |
|
|
|
653 |
return ret_val;
|
|
|
654 |
}
|
|
|
655 |
|
|
|
656 |
/**
|
|
|
657 |
* e1000_adjust_serdes_amplitude - Adjust SERDES output amplitude based on EEPROM setting.
|
|
|
658 |
* @hw: Struct containing variables accessed by shared code.
|
|
|
659 |
*/
|
|
|
660 |
static s32 e1000_adjust_serdes_amplitude(struct e1000_hw *hw)
|
|
|
661 |
{
|
|
|
662 |
u16 eeprom_data;
|
|
|
663 |
s32 ret_val;
|
|
|
664 |
|
|
|
665 |
e_dbg("e1000_adjust_serdes_amplitude");
|
|
|
666 |
|
|
|
667 |
if (hw->media_type != e1000_media_type_internal_serdes)
|
|
|
668 |
return E1000_SUCCESS;
|
|
|
669 |
|
|
|
670 |
switch (hw->mac_type) {
|
|
|
671 |
case e1000_82545_rev_3:
|
|
|
672 |
case e1000_82546_rev_3:
|
|
|
673 |
break;
|
|
|
674 |
default:
|
|
|
675 |
return E1000_SUCCESS;
|
|
|
676 |
}
|
|
|
677 |
|
|
|
678 |
ret_val = e1000_read_eeprom(hw, EEPROM_SERDES_AMPLITUDE, 1,
|
|
|
679 |
&eeprom_data);
|
|
|
680 |
if (ret_val) {
|
|
|
681 |
return ret_val;
|
|
|
682 |
}
|
|
|
683 |
|
|
|
684 |
if (eeprom_data != EEPROM_RESERVED_WORD) {
|
|
|
685 |
/* Adjust SERDES output amplitude only. */
|
|
|
686 |
eeprom_data &= EEPROM_SERDES_AMPLITUDE_MASK;
|
|
|
687 |
ret_val =
|
|
|
688 |
e1000_write_phy_reg(hw, M88E1000_PHY_EXT_CTRL, eeprom_data);
|
|
|
689 |
if (ret_val)
|
|
|
690 |
return ret_val;
|
|
|
691 |
}
|
|
|
692 |
|
|
|
693 |
return E1000_SUCCESS;
|
|
|
694 |
}
|
|
|
695 |
|
|
|
696 |
/**
|
|
|
697 |
* e1000_setup_link - Configures flow control and link settings.
|
|
|
698 |
* @hw: Struct containing variables accessed by shared code
|
|
|
699 |
*
|
|
|
700 |
* Determines which flow control settings to use. Calls the appropriate media-
|
|
|
701 |
* specific link configuration function. Configures the flow control settings.
|
|
|
702 |
* Assuming the adapter has a valid link partner, a valid link should be
|
|
|
703 |
* established. Assumes the hardware has previously been reset and the
|
|
|
704 |
* transmitter and receiver are not enabled.
|
|
|
705 |
*/
|
|
|
706 |
s32 e1000_setup_link(struct e1000_hw *hw)
|
|
|
707 |
{
|
|
|
708 |
u32 ctrl_ext;
|
|
|
709 |
s32 ret_val;
|
|
|
710 |
u16 eeprom_data;
|
|
|
711 |
|
|
|
712 |
e_dbg("e1000_setup_link");
|
|
|
713 |
|
|
|
714 |
/* Read and store word 0x0F of the EEPROM. This word contains bits
|
|
|
715 |
* that determine the hardware's default PAUSE (flow control) mode,
|
|
|
716 |
* a bit that determines whether the HW defaults to enabling or
|
|
|
717 |
* disabling auto-negotiation, and the direction of the
|
|
|
718 |
* SW defined pins. If there is no SW over-ride of the flow
|
|
|
719 |
* control setting, then the variable hw->fc will
|
|
|
720 |
* be initialized based on a value in the EEPROM.
|
|
|
721 |
*/
|
|
|
722 |
if (hw->fc == E1000_FC_DEFAULT) {
|
|
|
723 |
ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG,
|
|
|
724 |
1, &eeprom_data);
|
|
|
725 |
if (ret_val) {
|
|
|
726 |
e_dbg("EEPROM Read Error\n");
|
|
|
727 |
return -E1000_ERR_EEPROM;
|
|
|
728 |
}
|
|
|
729 |
if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
|
|
|
730 |
hw->fc = E1000_FC_NONE;
|
|
|
731 |
else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
|
|
|
732 |
EEPROM_WORD0F_ASM_DIR)
|
|
|
733 |
hw->fc = E1000_FC_TX_PAUSE;
|
|
|
734 |
else
|
|
|
735 |
hw->fc = E1000_FC_FULL;
|
|
|
736 |
}
|
|
|
737 |
|
|
|
738 |
/* We want to save off the original Flow Control configuration just
|
|
|
739 |
* in case we get disconnected and then reconnected into a different
|
|
|
740 |
* hub or switch with different Flow Control capabilities.
|
|
|
741 |
*/
|
|
|
742 |
if (hw->mac_type == e1000_82542_rev2_0)
|
|
|
743 |
hw->fc &= (~E1000_FC_TX_PAUSE);
|
|
|
744 |
|
|
|
745 |
if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1))
|
|
|
746 |
hw->fc &= (~E1000_FC_RX_PAUSE);
|
|
|
747 |
|
|
|
748 |
hw->original_fc = hw->fc;
|
|
|
749 |
|
|
|
750 |
e_dbg("After fix-ups FlowControl is now = %x\n", hw->fc);
|
|
|
751 |
|
|
|
752 |
/* Take the 4 bits from EEPROM word 0x0F that determine the initial
|
|
|
753 |
* polarity value for the SW controlled pins, and setup the
|
|
|
754 |
* Extended Device Control reg with that info.
|
|
|
755 |
* This is needed because one of the SW controlled pins is used for
|
|
|
756 |
* signal detection. So this should be done before e1000_setup_pcs_link()
|
|
|
757 |
* or e1000_phy_setup() is called.
|
|
|
758 |
*/
|
|
|
759 |
if (hw->mac_type == e1000_82543) {
|
|
|
760 |
ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG,
|
|
|
761 |
1, &eeprom_data);
|
|
|
762 |
if (ret_val) {
|
|
|
763 |
e_dbg("EEPROM Read Error\n");
|
|
|
764 |
return -E1000_ERR_EEPROM;
|
|
|
765 |
}
|
|
|
766 |
ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) <<
|
|
|
767 |
SWDPIO__EXT_SHIFT);
|
|
|
768 |
ew32(CTRL_EXT, ctrl_ext);
|
|
|
769 |
}
|
|
|
770 |
|
|
|
771 |
/* Call the necessary subroutine to configure the link. */
|
|
|
772 |
ret_val = (hw->media_type == e1000_media_type_copper) ?
|
|
|
773 |
e1000_setup_copper_link(hw) : e1000_setup_fiber_serdes_link(hw);
|
|
|
774 |
|
|
|
775 |
/* Initialize the flow control address, type, and PAUSE timer
|
|
|
776 |
* registers to their default values. This is done even if flow
|
|
|
777 |
* control is disabled, because it does not hurt anything to
|
|
|
778 |
* initialize these registers.
|
|
|
779 |
*/
|
|
|
780 |
e_dbg("Initializing the Flow Control address, type and timer regs\n");
|
|
|
781 |
|
|
|
782 |
ew32(FCT, FLOW_CONTROL_TYPE);
|
|
|
783 |
ew32(FCAH, FLOW_CONTROL_ADDRESS_HIGH);
|
|
|
784 |
ew32(FCAL, FLOW_CONTROL_ADDRESS_LOW);
|
|
|
785 |
|
|
|
786 |
ew32(FCTTV, hw->fc_pause_time);
|
|
|
787 |
|
|
|
788 |
/* Set the flow control receive threshold registers. Normally,
|
|
|
789 |
* these registers will be set to a default threshold that may be
|
|
|
790 |
* adjusted later by the driver's runtime code. However, if the
|
|
|
791 |
* ability to transmit pause frames in not enabled, then these
|
|
|
792 |
* registers will be set to 0.
|
|
|
793 |
*/
|
|
|
794 |
if (!(hw->fc & E1000_FC_TX_PAUSE)) {
|
|
|
795 |
ew32(FCRTL, 0);
|
|
|
796 |
ew32(FCRTH, 0);
|
|
|
797 |
} else {
|
|
|
798 |
/* We need to set up the Receive Threshold high and low water marks
|
|
|
799 |
* as well as (optionally) enabling the transmission of XON frames.
|
|
|
800 |
*/
|
|
|
801 |
if (hw->fc_send_xon) {
|
|
|
802 |
ew32(FCRTL, (hw->fc_low_water | E1000_FCRTL_XONE));
|
|
|
803 |
ew32(FCRTH, hw->fc_high_water);
|
|
|
804 |
} else {
|
|
|
805 |
ew32(FCRTL, hw->fc_low_water);
|
|
|
806 |
ew32(FCRTH, hw->fc_high_water);
|
|
|
807 |
}
|
|
|
808 |
}
|
|
|
809 |
return ret_val;
|
|
|
810 |
}
|
|
|
811 |
|
|
|
812 |
/**
|
|
|
813 |
* e1000_setup_fiber_serdes_link - prepare fiber or serdes link
|
|
|
814 |
* @hw: Struct containing variables accessed by shared code
|
|
|
815 |
*
|
|
|
816 |
* Manipulates Physical Coding Sublayer functions in order to configure
|
|
|
817 |
* link. Assumes the hardware has been previously reset and the transmitter
|
|
|
818 |
* and receiver are not enabled.
|
|
|
819 |
*/
|
|
|
820 |
static s32 e1000_setup_fiber_serdes_link(struct e1000_hw *hw)
|
|
|
821 |
{
|
|
|
822 |
u32 ctrl;
|
|
|
823 |
u32 status;
|
|
|
824 |
u32 txcw = 0;
|
|
|
825 |
u32 i;
|
|
|
826 |
u32 signal = 0;
|
|
|
827 |
s32 ret_val;
|
|
|
828 |
|
|
|
829 |
e_dbg("e1000_setup_fiber_serdes_link");
|
|
|
830 |
|
|
|
831 |
/* On adapters with a MAC newer than 82544, SWDP 1 will be
|
|
|
832 |
* set when the optics detect a signal. On older adapters, it will be
|
|
|
833 |
* cleared when there is a signal. This applies to fiber media only.
|
|
|
834 |
* If we're on serdes media, adjust the output amplitude to value
|
|
|
835 |
* set in the EEPROM.
|
|
|
836 |
*/
|
|
|
837 |
ctrl = er32(CTRL);
|
|
|
838 |
if (hw->media_type == e1000_media_type_fiber)
|
|
|
839 |
signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
|
|
|
840 |
|
|
|
841 |
ret_val = e1000_adjust_serdes_amplitude(hw);
|
|
|
842 |
if (ret_val)
|
|
|
843 |
return ret_val;
|
|
|
844 |
|
|
|
845 |
/* Take the link out of reset */
|
|
|
846 |
ctrl &= ~(E1000_CTRL_LRST);
|
|
|
847 |
|
|
|
848 |
/* Adjust VCO speed to improve BER performance */
|
|
|
849 |
ret_val = e1000_set_vco_speed(hw);
|
|
|
850 |
if (ret_val)
|
|
|
851 |
return ret_val;
|
|
|
852 |
|
|
|
853 |
e1000_config_collision_dist(hw);
|
|
|
854 |
|
|
|
855 |
/* Check for a software override of the flow control settings, and setup
|
|
|
856 |
* the device accordingly. If auto-negotiation is enabled, then software
|
|
|
857 |
* will have to set the "PAUSE" bits to the correct value in the Tranmsit
|
|
|
858 |
* Config Word Register (TXCW) and re-start auto-negotiation. However, if
|
|
|
859 |
* auto-negotiation is disabled, then software will have to manually
|
|
|
860 |
* configure the two flow control enable bits in the CTRL register.
|
|
|
861 |
*
|
|
|
862 |
* The possible values of the "fc" parameter are:
|
|
|
863 |
* 0: Flow control is completely disabled
|
|
|
864 |
* 1: Rx flow control is enabled (we can receive pause frames, but
|
|
|
865 |
* not send pause frames).
|
|
|
866 |
* 2: Tx flow control is enabled (we can send pause frames but we do
|
|
|
867 |
* not support receiving pause frames).
|
|
|
868 |
* 3: Both Rx and TX flow control (symmetric) are enabled.
|
|
|
869 |
*/
|
|
|
870 |
switch (hw->fc) {
|
|
|
871 |
case E1000_FC_NONE:
|
|
|
872 |
/* Flow control is completely disabled by a software over-ride. */
|
|
|
873 |
txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
|
|
|
874 |
break;
|
|
|
875 |
case E1000_FC_RX_PAUSE:
|
|
|
876 |
/* RX Flow control is enabled and TX Flow control is disabled by a
|
|
|
877 |
* software over-ride. Since there really isn't a way to advertise
|
|
|
878 |
* that we are capable of RX Pause ONLY, we will advertise that we
|
|
|
879 |
* support both symmetric and asymmetric RX PAUSE. Later, we will
|
|
|
880 |
* disable the adapter's ability to send PAUSE frames.
|
|
|
881 |
*/
|
|
|
882 |
txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
|
|
|
883 |
break;
|
|
|
884 |
case E1000_FC_TX_PAUSE:
|
|
|
885 |
/* TX Flow control is enabled, and RX Flow control is disabled, by a
|
|
|
886 |
* software over-ride.
|
|
|
887 |
*/
|
|
|
888 |
txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR);
|
|
|
889 |
break;
|
|
|
890 |
case E1000_FC_FULL:
|
|
|
891 |
/* Flow control (both RX and TX) is enabled by a software over-ride. */
|
|
|
892 |
txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
|
|
|
893 |
break;
|
|
|
894 |
default:
|
|
|
895 |
e_dbg("Flow control param set incorrectly\n");
|
|
|
896 |
return -E1000_ERR_CONFIG;
|
|
|
897 |
break;
|
|
|
898 |
}
|
|
|
899 |
|
|
|
900 |
/* Since auto-negotiation is enabled, take the link out of reset (the link
|
|
|
901 |
* will be in reset, because we previously reset the chip). This will
|
|
|
902 |
* restart auto-negotiation. If auto-negotiation is successful then the
|
|
|
903 |
* link-up status bit will be set and the flow control enable bits (RFCE
|
|
|
904 |
* and TFCE) will be set according to their negotiated value.
|
|
|
905 |
*/
|
|
|
906 |
e_dbg("Auto-negotiation enabled\n");
|
|
|
907 |
|
|
|
908 |
ew32(TXCW, txcw);
|
|
|
909 |
ew32(CTRL, ctrl);
|
|
|
910 |
E1000_WRITE_FLUSH();
|
|
|
911 |
|
|
|
912 |
hw->txcw = txcw;
|
|
|
913 |
msleep(1);
|
|
|
914 |
|
|
|
915 |
/* If we have a signal (the cable is plugged in) then poll for a "Link-Up"
|
|
|
916 |
* indication in the Device Status Register. Time-out if a link isn't
|
|
|
917 |
* seen in 500 milliseconds seconds (Auto-negotiation should complete in
|
|
|
918 |
* less than 500 milliseconds even if the other end is doing it in SW).
|
|
|
919 |
* For internal serdes, we just assume a signal is present, then poll.
|
|
|
920 |
*/
|
|
|
921 |
if (hw->media_type == e1000_media_type_internal_serdes ||
|
|
|
922 |
(er32(CTRL) & E1000_CTRL_SWDPIN1) == signal) {
|
|
|
923 |
e_dbg("Looking for Link\n");
|
|
|
924 |
for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) {
|
|
|
925 |
msleep(10);
|
|
|
926 |
status = er32(STATUS);
|
|
|
927 |
if (status & E1000_STATUS_LU)
|
|
|
928 |
break;
|
|
|
929 |
}
|
|
|
930 |
if (i == (LINK_UP_TIMEOUT / 10)) {
|
|
|
931 |
e_dbg("Never got a valid link from auto-neg!!!\n");
|
|
|
932 |
hw->autoneg_failed = 1;
|
|
|
933 |
/* AutoNeg failed to achieve a link, so we'll call
|
|
|
934 |
* e1000_check_for_link. This routine will force the link up if
|
|
|
935 |
* we detect a signal. This will allow us to communicate with
|
|
|
936 |
* non-autonegotiating link partners.
|
|
|
937 |
*/
|
|
|
938 |
ret_val = e1000_check_for_link(hw);
|
|
|
939 |
if (ret_val) {
|
|
|
940 |
e_dbg("Error while checking for link\n");
|
|
|
941 |
return ret_val;
|
|
|
942 |
}
|
|
|
943 |
hw->autoneg_failed = 0;
|
|
|
944 |
} else {
|
|
|
945 |
hw->autoneg_failed = 0;
|
|
|
946 |
e_dbg("Valid Link Found\n");
|
|
|
947 |
}
|
|
|
948 |
} else {
|
|
|
949 |
e_dbg("No Signal Detected\n");
|
|
|
950 |
}
|
|
|
951 |
return E1000_SUCCESS;
|
|
|
952 |
}
|
|
|
953 |
|
|
|
954 |
/**
|
|
|
955 |
* e1000_copper_link_preconfig - early configuration for copper
|
|
|
956 |
* @hw: Struct containing variables accessed by shared code
|
|
|
957 |
*
|
|
|
958 |
* Make sure we have a valid PHY and change PHY mode before link setup.
|
|
|
959 |
*/
|
|
|
960 |
static s32 e1000_copper_link_preconfig(struct e1000_hw *hw)
|
|
|
961 |
{
|
|
|
962 |
u32 ctrl;
|
|
|
963 |
s32 ret_val;
|
|
|
964 |
u16 phy_data;
|
|
|
965 |
|
|
|
966 |
e_dbg("e1000_copper_link_preconfig");
|
|
|
967 |
|
|
|
968 |
ctrl = er32(CTRL);
|
|
|
969 |
/* With 82543, we need to force speed and duplex on the MAC equal to what
|
|
|
970 |
* the PHY speed and duplex configuration is. In addition, we need to
|
|
|
971 |
* perform a hardware reset on the PHY to take it out of reset.
|
|
|
972 |
*/
|
|
|
973 |
if (hw->mac_type > e1000_82543) {
|
|
|
974 |
ctrl |= E1000_CTRL_SLU;
|
|
|
975 |
ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
|
|
|
976 |
ew32(CTRL, ctrl);
|
|
|
977 |
} else {
|
|
|
978 |
ctrl |=
|
|
|
979 |
(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX | E1000_CTRL_SLU);
|
|
|
980 |
ew32(CTRL, ctrl);
|
|
|
981 |
ret_val = e1000_phy_hw_reset(hw);
|
|
|
982 |
if (ret_val)
|
|
|
983 |
return ret_val;
|
|
|
984 |
}
|
|
|
985 |
|
|
|
986 |
/* Make sure we have a valid PHY */
|
|
|
987 |
ret_val = e1000_detect_gig_phy(hw);
|
|
|
988 |
if (ret_val) {
|
|
|
989 |
e_dbg("Error, did not detect valid phy.\n");
|
|
|
990 |
return ret_val;
|
|
|
991 |
}
|
|
|
992 |
e_dbg("Phy ID = %x\n", hw->phy_id);
|
|
|
993 |
|
|
|
994 |
/* Set PHY to class A mode (if necessary) */
|
|
|
995 |
ret_val = e1000_set_phy_mode(hw);
|
|
|
996 |
if (ret_val)
|
|
|
997 |
return ret_val;
|
|
|
998 |
|
|
|
999 |
if ((hw->mac_type == e1000_82545_rev_3) ||
|
|
|
1000 |
(hw->mac_type == e1000_82546_rev_3)) {
|
|
|
1001 |
ret_val =
|
|
|
1002 |
e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
|
|
|
1003 |
phy_data |= 0x00000008;
|
|
|
1004 |
ret_val =
|
|
|
1005 |
e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
|
|
|
1006 |
}
|
|
|
1007 |
|
|
|
1008 |
if (hw->mac_type <= e1000_82543 ||
|
|
|
1009 |
hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
|
|
|
1010 |
hw->mac_type == e1000_82541_rev_2
|
|
|
1011 |
|| hw->mac_type == e1000_82547_rev_2)
|
|
|
1012 |
hw->phy_reset_disable = false;
|
|
|
1013 |
|
|
|
1014 |
return E1000_SUCCESS;
|
|
|
1015 |
}
|
|
|
1016 |
|
|
|
1017 |
/**
|
|
|
1018 |
* e1000_copper_link_igp_setup - Copper link setup for e1000_phy_igp series.
|
|
|
1019 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1020 |
*/
|
|
|
1021 |
static s32 e1000_copper_link_igp_setup(struct e1000_hw *hw)
|
|
|
1022 |
{
|
|
|
1023 |
u32 led_ctrl;
|
|
|
1024 |
s32 ret_val;
|
|
|
1025 |
u16 phy_data;
|
|
|
1026 |
|
|
|
1027 |
e_dbg("e1000_copper_link_igp_setup");
|
|
|
1028 |
|
|
|
1029 |
if (hw->phy_reset_disable)
|
|
|
1030 |
return E1000_SUCCESS;
|
|
|
1031 |
|
|
|
1032 |
ret_val = e1000_phy_reset(hw);
|
|
|
1033 |
if (ret_val) {
|
|
|
1034 |
e_dbg("Error Resetting the PHY\n");
|
|
|
1035 |
return ret_val;
|
|
|
1036 |
}
|
|
|
1037 |
|
|
|
1038 |
/* Wait 15ms for MAC to configure PHY from eeprom settings */
|
|
|
1039 |
msleep(15);
|
|
|
1040 |
/* Configure activity LED after PHY reset */
|
|
|
1041 |
led_ctrl = er32(LEDCTL);
|
|
|
1042 |
led_ctrl &= IGP_ACTIVITY_LED_MASK;
|
|
|
1043 |
led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
|
|
|
1044 |
ew32(LEDCTL, led_ctrl);
|
|
|
1045 |
|
|
|
1046 |
/* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */
|
|
|
1047 |
if (hw->phy_type == e1000_phy_igp) {
|
|
|
1048 |
/* disable lplu d3 during driver init */
|
|
|
1049 |
ret_val = e1000_set_d3_lplu_state(hw, false);
|
|
|
1050 |
if (ret_val) {
|
|
|
1051 |
e_dbg("Error Disabling LPLU D3\n");
|
|
|
1052 |
return ret_val;
|
|
|
1053 |
}
|
|
|
1054 |
}
|
|
|
1055 |
|
|
|
1056 |
/* Configure mdi-mdix settings */
|
|
|
1057 |
ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
|
|
|
1058 |
if (ret_val)
|
|
|
1059 |
return ret_val;
|
|
|
1060 |
|
|
|
1061 |
if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
|
|
|
1062 |
hw->dsp_config_state = e1000_dsp_config_disabled;
|
|
|
1063 |
/* Force MDI for earlier revs of the IGP PHY */
|
|
|
1064 |
phy_data &=
|
|
|
1065 |
~(IGP01E1000_PSCR_AUTO_MDIX |
|
|
|
1066 |
IGP01E1000_PSCR_FORCE_MDI_MDIX);
|
|
|
1067 |
hw->mdix = 1;
|
|
|
1068 |
|
|
|
1069 |
} else {
|
|
|
1070 |
hw->dsp_config_state = e1000_dsp_config_enabled;
|
|
|
1071 |
phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
|
|
|
1072 |
|
|
|
1073 |
switch (hw->mdix) {
|
|
|
1074 |
case 1:
|
|
|
1075 |
phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
|
|
|
1076 |
break;
|
|
|
1077 |
case 2:
|
|
|
1078 |
phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
|
|
|
1079 |
break;
|
|
|
1080 |
case 0:
|
|
|
1081 |
default:
|
|
|
1082 |
phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
|
|
|
1083 |
break;
|
|
|
1084 |
}
|
|
|
1085 |
}
|
|
|
1086 |
ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
|
|
|
1087 |
if (ret_val)
|
|
|
1088 |
return ret_val;
|
|
|
1089 |
|
|
|
1090 |
/* set auto-master slave resolution settings */
|
|
|
1091 |
if (hw->autoneg) {
|
|
|
1092 |
e1000_ms_type phy_ms_setting = hw->master_slave;
|
|
|
1093 |
|
|
|
1094 |
if (hw->ffe_config_state == e1000_ffe_config_active)
|
|
|
1095 |
hw->ffe_config_state = e1000_ffe_config_enabled;
|
|
|
1096 |
|
|
|
1097 |
if (hw->dsp_config_state == e1000_dsp_config_activated)
|
|
|
1098 |
hw->dsp_config_state = e1000_dsp_config_enabled;
|
|
|
1099 |
|
|
|
1100 |
/* when autonegotiation advertisement is only 1000Mbps then we
|
|
|
1101 |
* should disable SmartSpeed and enable Auto MasterSlave
|
|
|
1102 |
* resolution as hardware default. */
|
|
|
1103 |
if (hw->autoneg_advertised == ADVERTISE_1000_FULL) {
|
|
|
1104 |
/* Disable SmartSpeed */
|
|
|
1105 |
ret_val =
|
|
|
1106 |
e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
|
|
|
1107 |
&phy_data);
|
|
|
1108 |
if (ret_val)
|
|
|
1109 |
return ret_val;
|
|
|
1110 |
phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
|
|
|
1111 |
ret_val =
|
|
|
1112 |
e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
|
|
|
1113 |
phy_data);
|
|
|
1114 |
if (ret_val)
|
|
|
1115 |
return ret_val;
|
|
|
1116 |
/* Set auto Master/Slave resolution process */
|
|
|
1117 |
ret_val =
|
|
|
1118 |
e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
|
|
|
1119 |
if (ret_val)
|
|
|
1120 |
return ret_val;
|
|
|
1121 |
phy_data &= ~CR_1000T_MS_ENABLE;
|
|
|
1122 |
ret_val =
|
|
|
1123 |
e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
|
|
|
1124 |
if (ret_val)
|
|
|
1125 |
return ret_val;
|
|
|
1126 |
}
|
|
|
1127 |
|
|
|
1128 |
ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
|
|
|
1129 |
if (ret_val)
|
|
|
1130 |
return ret_val;
|
|
|
1131 |
|
|
|
1132 |
/* load defaults for future use */
|
|
|
1133 |
hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
|
|
|
1134 |
((phy_data & CR_1000T_MS_VALUE) ?
|
|
|
1135 |
e1000_ms_force_master :
|
|
|
1136 |
e1000_ms_force_slave) : e1000_ms_auto;
|
|
|
1137 |
|
|
|
1138 |
switch (phy_ms_setting) {
|
|
|
1139 |
case e1000_ms_force_master:
|
|
|
1140 |
phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
|
|
|
1141 |
break;
|
|
|
1142 |
case e1000_ms_force_slave:
|
|
|
1143 |
phy_data |= CR_1000T_MS_ENABLE;
|
|
|
1144 |
phy_data &= ~(CR_1000T_MS_VALUE);
|
|
|
1145 |
break;
|
|
|
1146 |
case e1000_ms_auto:
|
|
|
1147 |
phy_data &= ~CR_1000T_MS_ENABLE;
|
|
|
1148 |
default:
|
|
|
1149 |
break;
|
|
|
1150 |
}
|
|
|
1151 |
ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
|
|
|
1152 |
if (ret_val)
|
|
|
1153 |
return ret_val;
|
|
|
1154 |
}
|
|
|
1155 |
|
|
|
1156 |
return E1000_SUCCESS;
|
|
|
1157 |
}
|
|
|
1158 |
|
|
|
1159 |
/**
|
|
|
1160 |
* e1000_copper_link_mgp_setup - Copper link setup for e1000_phy_m88 series.
|
|
|
1161 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1162 |
*/
|
|
|
1163 |
static s32 e1000_copper_link_mgp_setup(struct e1000_hw *hw)
|
|
|
1164 |
{
|
|
|
1165 |
s32 ret_val;
|
|
|
1166 |
u16 phy_data;
|
|
|
1167 |
|
|
|
1168 |
e_dbg("e1000_copper_link_mgp_setup");
|
|
|
1169 |
|
|
|
1170 |
if (hw->phy_reset_disable)
|
|
|
1171 |
return E1000_SUCCESS;
|
|
|
1172 |
|
|
|
1173 |
/* Enable CRS on TX. This must be set for half-duplex operation. */
|
|
|
1174 |
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
|
|
|
1175 |
if (ret_val)
|
|
|
1176 |
return ret_val;
|
|
|
1177 |
|
|
|
1178 |
phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
|
|
|
1179 |
|
|
|
1180 |
/* Options:
|
|
|
1181 |
* MDI/MDI-X = 0 (default)
|
|
|
1182 |
* 0 - Auto for all speeds
|
|
|
1183 |
* 1 - MDI mode
|
|
|
1184 |
* 2 - MDI-X mode
|
|
|
1185 |
* 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
|
|
|
1186 |
*/
|
|
|
1187 |
phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
|
|
|
1188 |
|
|
|
1189 |
switch (hw->mdix) {
|
|
|
1190 |
case 1:
|
|
|
1191 |
phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
|
|
|
1192 |
break;
|
|
|
1193 |
case 2:
|
|
|
1194 |
phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
|
|
|
1195 |
break;
|
|
|
1196 |
case 3:
|
|
|
1197 |
phy_data |= M88E1000_PSCR_AUTO_X_1000T;
|
|
|
1198 |
break;
|
|
|
1199 |
case 0:
|
|
|
1200 |
default:
|
|
|
1201 |
phy_data |= M88E1000_PSCR_AUTO_X_MODE;
|
|
|
1202 |
break;
|
|
|
1203 |
}
|
|
|
1204 |
|
|
|
1205 |
/* Options:
|
|
|
1206 |
* disable_polarity_correction = 0 (default)
|
|
|
1207 |
* Automatic Correction for Reversed Cable Polarity
|
|
|
1208 |
* 0 - Disabled
|
|
|
1209 |
* 1 - Enabled
|
|
|
1210 |
*/
|
|
|
1211 |
phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
|
|
|
1212 |
if (hw->disable_polarity_correction == 1)
|
|
|
1213 |
phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
|
|
|
1214 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
|
|
|
1215 |
if (ret_val)
|
|
|
1216 |
return ret_val;
|
|
|
1217 |
|
|
|
1218 |
if (hw->phy_revision < M88E1011_I_REV_4) {
|
|
|
1219 |
/* Force TX_CLK in the Extended PHY Specific Control Register
|
|
|
1220 |
* to 25MHz clock.
|
|
|
1221 |
*/
|
|
|
1222 |
ret_val =
|
|
|
1223 |
e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
|
|
|
1224 |
&phy_data);
|
|
|
1225 |
if (ret_val)
|
|
|
1226 |
return ret_val;
|
|
|
1227 |
|
|
|
1228 |
phy_data |= M88E1000_EPSCR_TX_CLK_25;
|
|
|
1229 |
|
|
|
1230 |
if ((hw->phy_revision == E1000_REVISION_2) &&
|
|
|
1231 |
(hw->phy_id == M88E1111_I_PHY_ID)) {
|
|
|
1232 |
/* Vidalia Phy, set the downshift counter to 5x */
|
|
|
1233 |
phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK);
|
|
|
1234 |
phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
|
|
|
1235 |
ret_val = e1000_write_phy_reg(hw,
|
|
|
1236 |
M88E1000_EXT_PHY_SPEC_CTRL,
|
|
|
1237 |
phy_data);
|
|
|
1238 |
if (ret_val)
|
|
|
1239 |
return ret_val;
|
|
|
1240 |
} else {
|
|
|
1241 |
/* Configure Master and Slave downshift values */
|
|
|
1242 |
phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
|
|
|
1243 |
M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
|
|
|
1244 |
phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X |
|
|
|
1245 |
M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
|
|
|
1246 |
ret_val = e1000_write_phy_reg(hw,
|
|
|
1247 |
M88E1000_EXT_PHY_SPEC_CTRL,
|
|
|
1248 |
phy_data);
|
|
|
1249 |
if (ret_val)
|
|
|
1250 |
return ret_val;
|
|
|
1251 |
}
|
|
|
1252 |
}
|
|
|
1253 |
|
|
|
1254 |
/* SW Reset the PHY so all changes take effect */
|
|
|
1255 |
ret_val = e1000_phy_reset(hw);
|
|
|
1256 |
if (ret_val) {
|
|
|
1257 |
e_dbg("Error Resetting the PHY\n");
|
|
|
1258 |
return ret_val;
|
|
|
1259 |
}
|
|
|
1260 |
|
|
|
1261 |
return E1000_SUCCESS;
|
|
|
1262 |
}
|
|
|
1263 |
|
|
|
1264 |
/**
|
|
|
1265 |
* e1000_copper_link_autoneg - setup auto-neg
|
|
|
1266 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1267 |
*
|
|
|
1268 |
* Setup auto-negotiation and flow control advertisements,
|
|
|
1269 |
* and then perform auto-negotiation.
|
|
|
1270 |
*/
|
|
|
1271 |
static s32 e1000_copper_link_autoneg(struct e1000_hw *hw)
|
|
|
1272 |
{
|
|
|
1273 |
s32 ret_val;
|
|
|
1274 |
u16 phy_data;
|
|
|
1275 |
|
|
|
1276 |
e_dbg("e1000_copper_link_autoneg");
|
|
|
1277 |
|
|
|
1278 |
/* Perform some bounds checking on the hw->autoneg_advertised
|
|
|
1279 |
* parameter. If this variable is zero, then set it to the default.
|
|
|
1280 |
*/
|
|
|
1281 |
hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT;
|
|
|
1282 |
|
|
|
1283 |
/* If autoneg_advertised is zero, we assume it was not defaulted
|
|
|
1284 |
* by the calling code so we set to advertise full capability.
|
|
|
1285 |
*/
|
|
|
1286 |
if (hw->autoneg_advertised == 0)
|
|
|
1287 |
hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;
|
|
|
1288 |
|
|
|
1289 |
e_dbg("Reconfiguring auto-neg advertisement params\n");
|
|
|
1290 |
ret_val = e1000_phy_setup_autoneg(hw);
|
|
|
1291 |
if (ret_val) {
|
|
|
1292 |
e_dbg("Error Setting up Auto-Negotiation\n");
|
|
|
1293 |
return ret_val;
|
|
|
1294 |
}
|
|
|
1295 |
e_dbg("Restarting Auto-Neg\n");
|
|
|
1296 |
|
|
|
1297 |
/* Restart auto-negotiation by setting the Auto Neg Enable bit and
|
|
|
1298 |
* the Auto Neg Restart bit in the PHY control register.
|
|
|
1299 |
*/
|
|
|
1300 |
ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
|
|
|
1301 |
if (ret_val)
|
|
|
1302 |
return ret_val;
|
|
|
1303 |
|
|
|
1304 |
phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
|
|
|
1305 |
ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
|
|
|
1306 |
if (ret_val)
|
|
|
1307 |
return ret_val;
|
|
|
1308 |
|
|
|
1309 |
/* Does the user want to wait for Auto-Neg to complete here, or
|
|
|
1310 |
* check at a later time (for example, callback routine).
|
|
|
1311 |
*/
|
|
|
1312 |
if (hw->wait_autoneg_complete) {
|
|
|
1313 |
ret_val = e1000_wait_autoneg(hw);
|
|
|
1314 |
if (ret_val) {
|
|
|
1315 |
e_dbg
|
|
|
1316 |
("Error while waiting for autoneg to complete\n");
|
|
|
1317 |
return ret_val;
|
|
|
1318 |
}
|
|
|
1319 |
}
|
|
|
1320 |
|
|
|
1321 |
hw->get_link_status = true;
|
|
|
1322 |
|
|
|
1323 |
return E1000_SUCCESS;
|
|
|
1324 |
}
|
|
|
1325 |
|
|
|
1326 |
/**
|
|
|
1327 |
* e1000_copper_link_postconfig - post link setup
|
|
|
1328 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1329 |
*
|
|
|
1330 |
* Config the MAC and the PHY after link is up.
|
|
|
1331 |
* 1) Set up the MAC to the current PHY speed/duplex
|
|
|
1332 |
* if we are on 82543. If we
|
|
|
1333 |
* are on newer silicon, we only need to configure
|
|
|
1334 |
* collision distance in the Transmit Control Register.
|
|
|
1335 |
* 2) Set up flow control on the MAC to that established with
|
|
|
1336 |
* the link partner.
|
|
|
1337 |
* 3) Config DSP to improve Gigabit link quality for some PHY revisions.
|
|
|
1338 |
*/
|
|
|
1339 |
static s32 e1000_copper_link_postconfig(struct e1000_hw *hw)
|
|
|
1340 |
{
|
|
|
1341 |
s32 ret_val;
|
|
|
1342 |
e_dbg("e1000_copper_link_postconfig");
|
|
|
1343 |
|
|
|
1344 |
if (hw->mac_type >= e1000_82544) {
|
|
|
1345 |
e1000_config_collision_dist(hw);
|
|
|
1346 |
} else {
|
|
|
1347 |
ret_val = e1000_config_mac_to_phy(hw);
|
|
|
1348 |
if (ret_val) {
|
|
|
1349 |
e_dbg("Error configuring MAC to PHY settings\n");
|
|
|
1350 |
return ret_val;
|
|
|
1351 |
}
|
|
|
1352 |
}
|
|
|
1353 |
ret_val = e1000_config_fc_after_link_up(hw);
|
|
|
1354 |
if (ret_val) {
|
|
|
1355 |
e_dbg("Error Configuring Flow Control\n");
|
|
|
1356 |
return ret_val;
|
|
|
1357 |
}
|
|
|
1358 |
|
|
|
1359 |
/* Config DSP to improve Giga link quality */
|
|
|
1360 |
if (hw->phy_type == e1000_phy_igp) {
|
|
|
1361 |
ret_val = e1000_config_dsp_after_link_change(hw, true);
|
|
|
1362 |
if (ret_val) {
|
|
|
1363 |
e_dbg("Error Configuring DSP after link up\n");
|
|
|
1364 |
return ret_val;
|
|
|
1365 |
}
|
|
|
1366 |
}
|
|
|
1367 |
|
|
|
1368 |
return E1000_SUCCESS;
|
|
|
1369 |
}
|
|
|
1370 |
|
|
|
1371 |
/**
|
|
|
1372 |
* e1000_setup_copper_link - phy/speed/duplex setting
|
|
|
1373 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1374 |
*
|
|
|
1375 |
* Detects which PHY is present and sets up the speed and duplex
|
|
|
1376 |
*/
|
|
|
1377 |
static s32 e1000_setup_copper_link(struct e1000_hw *hw)
|
|
|
1378 |
{
|
|
|
1379 |
s32 ret_val;
|
|
|
1380 |
u16 i;
|
|
|
1381 |
u16 phy_data;
|
|
|
1382 |
|
|
|
1383 |
e_dbg("e1000_setup_copper_link");
|
|
|
1384 |
|
|
|
1385 |
/* Check if it is a valid PHY and set PHY mode if necessary. */
|
|
|
1386 |
ret_val = e1000_copper_link_preconfig(hw);
|
|
|
1387 |
if (ret_val)
|
|
|
1388 |
return ret_val;
|
|
|
1389 |
|
|
|
1390 |
if (hw->phy_type == e1000_phy_igp) {
|
|
|
1391 |
ret_val = e1000_copper_link_igp_setup(hw);
|
|
|
1392 |
if (ret_val)
|
|
|
1393 |
return ret_val;
|
|
|
1394 |
} else if (hw->phy_type == e1000_phy_m88) {
|
|
|
1395 |
ret_val = e1000_copper_link_mgp_setup(hw);
|
|
|
1396 |
if (ret_val)
|
|
|
1397 |
return ret_val;
|
|
|
1398 |
}
|
|
|
1399 |
|
|
|
1400 |
if (hw->autoneg) {
|
|
|
1401 |
/* Setup autoneg and flow control advertisement
|
|
|
1402 |
* and perform autonegotiation */
|
|
|
1403 |
ret_val = e1000_copper_link_autoneg(hw);
|
|
|
1404 |
if (ret_val)
|
|
|
1405 |
return ret_val;
|
|
|
1406 |
} else {
|
|
|
1407 |
/* PHY will be set to 10H, 10F, 100H,or 100F
|
|
|
1408 |
* depending on value from forced_speed_duplex. */
|
|
|
1409 |
e_dbg("Forcing speed and duplex\n");
|
|
|
1410 |
ret_val = e1000_phy_force_speed_duplex(hw);
|
|
|
1411 |
if (ret_val) {
|
|
|
1412 |
e_dbg("Error Forcing Speed and Duplex\n");
|
|
|
1413 |
return ret_val;
|
|
|
1414 |
}
|
|
|
1415 |
}
|
|
|
1416 |
|
|
|
1417 |
/* Check link status. Wait up to 100 microseconds for link to become
|
|
|
1418 |
* valid.
|
|
|
1419 |
*/
|
|
|
1420 |
for (i = 0; i < 10; i++) {
|
|
|
1421 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
|
|
|
1422 |
if (ret_val)
|
|
|
1423 |
return ret_val;
|
|
|
1424 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
|
|
|
1425 |
if (ret_val)
|
|
|
1426 |
return ret_val;
|
|
|
1427 |
|
|
|
1428 |
if (phy_data & MII_SR_LINK_STATUS) {
|
|
|
1429 |
/* Config the MAC and PHY after link is up */
|
|
|
1430 |
ret_val = e1000_copper_link_postconfig(hw);
|
|
|
1431 |
if (ret_val)
|
|
|
1432 |
return ret_val;
|
|
|
1433 |
|
|
|
1434 |
e_dbg("Valid link established!!!\n");
|
|
|
1435 |
return E1000_SUCCESS;
|
|
|
1436 |
}
|
|
|
1437 |
udelay(10);
|
|
|
1438 |
}
|
|
|
1439 |
|
|
|
1440 |
e_dbg("Unable to establish link!!!\n");
|
|
|
1441 |
return E1000_SUCCESS;
|
|
|
1442 |
}
|
|
|
1443 |
|
|
|
1444 |
/**
|
|
|
1445 |
* e1000_phy_setup_autoneg - phy settings
|
|
|
1446 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1447 |
*
|
|
|
1448 |
* Configures PHY autoneg and flow control advertisement settings
|
|
|
1449 |
*/
|
|
|
1450 |
s32 e1000_phy_setup_autoneg(struct e1000_hw *hw)
|
|
|
1451 |
{
|
|
|
1452 |
s32 ret_val;
|
|
|
1453 |
u16 mii_autoneg_adv_reg;
|
|
|
1454 |
u16 mii_1000t_ctrl_reg;
|
|
|
1455 |
|
|
|
1456 |
e_dbg("e1000_phy_setup_autoneg");
|
|
|
1457 |
|
|
|
1458 |
/* Read the MII Auto-Neg Advertisement Register (Address 4). */
|
|
|
1459 |
ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
|
|
|
1460 |
if (ret_val)
|
|
|
1461 |
return ret_val;
|
|
|
1462 |
|
|
|
1463 |
/* Read the MII 1000Base-T Control Register (Address 9). */
|
|
|
1464 |
ret_val =
|
|
|
1465 |
e1000_read_phy_reg(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg);
|
|
|
1466 |
if (ret_val)
|
|
|
1467 |
return ret_val;
|
|
|
1468 |
|
|
|
1469 |
/* Need to parse both autoneg_advertised and fc and set up
|
|
|
1470 |
* the appropriate PHY registers. First we will parse for
|
|
|
1471 |
* autoneg_advertised software override. Since we can advertise
|
|
|
1472 |
* a plethora of combinations, we need to check each bit
|
|
|
1473 |
* individually.
|
|
|
1474 |
*/
|
|
|
1475 |
|
|
|
1476 |
/* First we clear all the 10/100 mb speed bits in the Auto-Neg
|
|
|
1477 |
* Advertisement Register (Address 4) and the 1000 mb speed bits in
|
|
|
1478 |
* the 1000Base-T Control Register (Address 9).
|
|
|
1479 |
*/
|
|
|
1480 |
mii_autoneg_adv_reg &= ~REG4_SPEED_MASK;
|
|
|
1481 |
mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK;
|
|
|
1482 |
|
|
|
1483 |
e_dbg("autoneg_advertised %x\n", hw->autoneg_advertised);
|
|
|
1484 |
|
|
|
1485 |
/* Do we want to advertise 10 Mb Half Duplex? */
|
|
|
1486 |
if (hw->autoneg_advertised & ADVERTISE_10_HALF) {
|
|
|
1487 |
e_dbg("Advertise 10mb Half duplex\n");
|
|
|
1488 |
mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
|
|
|
1489 |
}
|
|
|
1490 |
|
|
|
1491 |
/* Do we want to advertise 10 Mb Full Duplex? */
|
|
|
1492 |
if (hw->autoneg_advertised & ADVERTISE_10_FULL) {
|
|
|
1493 |
e_dbg("Advertise 10mb Full duplex\n");
|
|
|
1494 |
mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
|
|
|
1495 |
}
|
|
|
1496 |
|
|
|
1497 |
/* Do we want to advertise 100 Mb Half Duplex? */
|
|
|
1498 |
if (hw->autoneg_advertised & ADVERTISE_100_HALF) {
|
|
|
1499 |
e_dbg("Advertise 100mb Half duplex\n");
|
|
|
1500 |
mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
|
|
|
1501 |
}
|
|
|
1502 |
|
|
|
1503 |
/* Do we want to advertise 100 Mb Full Duplex? */
|
|
|
1504 |
if (hw->autoneg_advertised & ADVERTISE_100_FULL) {
|
|
|
1505 |
e_dbg("Advertise 100mb Full duplex\n");
|
|
|
1506 |
mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
|
|
|
1507 |
}
|
|
|
1508 |
|
|
|
1509 |
/* We do not allow the Phy to advertise 1000 Mb Half Duplex */
|
|
|
1510 |
if (hw->autoneg_advertised & ADVERTISE_1000_HALF) {
|
|
|
1511 |
e_dbg
|
|
|
1512 |
("Advertise 1000mb Half duplex requested, request denied!\n");
|
|
|
1513 |
}
|
|
|
1514 |
|
|
|
1515 |
/* Do we want to advertise 1000 Mb Full Duplex? */
|
|
|
1516 |
if (hw->autoneg_advertised & ADVERTISE_1000_FULL) {
|
|
|
1517 |
e_dbg("Advertise 1000mb Full duplex\n");
|
|
|
1518 |
mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
|
|
|
1519 |
}
|
|
|
1520 |
|
|
|
1521 |
/* Check for a software override of the flow control settings, and
|
|
|
1522 |
* setup the PHY advertisement registers accordingly. If
|
|
|
1523 |
* auto-negotiation is enabled, then software will have to set the
|
|
|
1524 |
* "PAUSE" bits to the correct value in the Auto-Negotiation
|
|
|
1525 |
* Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation.
|
|
|
1526 |
*
|
|
|
1527 |
* The possible values of the "fc" parameter are:
|
|
|
1528 |
* 0: Flow control is completely disabled
|
|
|
1529 |
* 1: Rx flow control is enabled (we can receive pause frames
|
|
|
1530 |
* but not send pause frames).
|
|
|
1531 |
* 2: Tx flow control is enabled (we can send pause frames
|
|
|
1532 |
* but we do not support receiving pause frames).
|
|
|
1533 |
* 3: Both Rx and TX flow control (symmetric) are enabled.
|
|
|
1534 |
* other: No software override. The flow control configuration
|
|
|
1535 |
* in the EEPROM is used.
|
|
|
1536 |
*/
|
|
|
1537 |
switch (hw->fc) {
|
|
|
1538 |
case E1000_FC_NONE: /* 0 */
|
|
|
1539 |
/* Flow control (RX & TX) is completely disabled by a
|
|
|
1540 |
* software over-ride.
|
|
|
1541 |
*/
|
|
|
1542 |
mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
|
|
|
1543 |
break;
|
|
|
1544 |
case E1000_FC_RX_PAUSE: /* 1 */
|
|
|
1545 |
/* RX Flow control is enabled, and TX Flow control is
|
|
|
1546 |
* disabled, by a software over-ride.
|
|
|
1547 |
*/
|
|
|
1548 |
/* Since there really isn't a way to advertise that we are
|
|
|
1549 |
* capable of RX Pause ONLY, we will advertise that we
|
|
|
1550 |
* support both symmetric and asymmetric RX PAUSE. Later
|
|
|
1551 |
* (in e1000_config_fc_after_link_up) we will disable the
|
|
|
1552 |
*hw's ability to send PAUSE frames.
|
|
|
1553 |
*/
|
|
|
1554 |
mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
|
|
|
1555 |
break;
|
|
|
1556 |
case E1000_FC_TX_PAUSE: /* 2 */
|
|
|
1557 |
/* TX Flow control is enabled, and RX Flow control is
|
|
|
1558 |
* disabled, by a software over-ride.
|
|
|
1559 |
*/
|
|
|
1560 |
mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
|
|
|
1561 |
mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
|
|
|
1562 |
break;
|
|
|
1563 |
case E1000_FC_FULL: /* 3 */
|
|
|
1564 |
/* Flow control (both RX and TX) is enabled by a software
|
|
|
1565 |
* over-ride.
|
|
|
1566 |
*/
|
|
|
1567 |
mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
|
|
|
1568 |
break;
|
|
|
1569 |
default:
|
|
|
1570 |
e_dbg("Flow control param set incorrectly\n");
|
|
|
1571 |
return -E1000_ERR_CONFIG;
|
|
|
1572 |
}
|
|
|
1573 |
|
|
|
1574 |
ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
|
|
|
1575 |
if (ret_val)
|
|
|
1576 |
return ret_val;
|
|
|
1577 |
|
|
|
1578 |
e_dbg("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
|
|
|
1579 |
|
|
|
1580 |
ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg);
|
|
|
1581 |
if (ret_val)
|
|
|
1582 |
return ret_val;
|
|
|
1583 |
|
|
|
1584 |
return E1000_SUCCESS;
|
|
|
1585 |
}
|
|
|
1586 |
|
|
|
1587 |
/**
|
|
|
1588 |
* e1000_phy_force_speed_duplex - force link settings
|
|
|
1589 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1590 |
*
|
|
|
1591 |
* Force PHY speed and duplex settings to hw->forced_speed_duplex
|
|
|
1592 |
*/
|
|
|
1593 |
static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw)
|
|
|
1594 |
{
|
|
|
1595 |
u32 ctrl;
|
|
|
1596 |
s32 ret_val;
|
|
|
1597 |
u16 mii_ctrl_reg;
|
|
|
1598 |
u16 mii_status_reg;
|
|
|
1599 |
u16 phy_data;
|
|
|
1600 |
u16 i;
|
|
|
1601 |
|
|
|
1602 |
e_dbg("e1000_phy_force_speed_duplex");
|
|
|
1603 |
|
|
|
1604 |
/* Turn off Flow control if we are forcing speed and duplex. */
|
|
|
1605 |
hw->fc = E1000_FC_NONE;
|
|
|
1606 |
|
|
|
1607 |
e_dbg("hw->fc = %d\n", hw->fc);
|
|
|
1608 |
|
|
|
1609 |
/* Read the Device Control Register. */
|
|
|
1610 |
ctrl = er32(CTRL);
|
|
|
1611 |
|
|
|
1612 |
/* Set the bits to Force Speed and Duplex in the Device Ctrl Reg. */
|
|
|
1613 |
ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
|
|
|
1614 |
ctrl &= ~(DEVICE_SPEED_MASK);
|
|
|
1615 |
|
|
|
1616 |
/* Clear the Auto Speed Detect Enable bit. */
|
|
|
1617 |
ctrl &= ~E1000_CTRL_ASDE;
|
|
|
1618 |
|
|
|
1619 |
/* Read the MII Control Register. */
|
|
|
1620 |
ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &mii_ctrl_reg);
|
|
|
1621 |
if (ret_val)
|
|
|
1622 |
return ret_val;
|
|
|
1623 |
|
|
|
1624 |
/* We need to disable autoneg in order to force link and duplex. */
|
|
|
1625 |
|
|
|
1626 |
mii_ctrl_reg &= ~MII_CR_AUTO_NEG_EN;
|
|
|
1627 |
|
|
|
1628 |
/* Are we forcing Full or Half Duplex? */
|
|
|
1629 |
if (hw->forced_speed_duplex == e1000_100_full ||
|
|
|
1630 |
hw->forced_speed_duplex == e1000_10_full) {
|
|
|
1631 |
/* We want to force full duplex so we SET the full duplex bits in the
|
|
|
1632 |
* Device and MII Control Registers.
|
|
|
1633 |
*/
|
|
|
1634 |
ctrl |= E1000_CTRL_FD;
|
|
|
1635 |
mii_ctrl_reg |= MII_CR_FULL_DUPLEX;
|
|
|
1636 |
e_dbg("Full Duplex\n");
|
|
|
1637 |
} else {
|
|
|
1638 |
/* We want to force half duplex so we CLEAR the full duplex bits in
|
|
|
1639 |
* the Device and MII Control Registers.
|
|
|
1640 |
*/
|
|
|
1641 |
ctrl &= ~E1000_CTRL_FD;
|
|
|
1642 |
mii_ctrl_reg &= ~MII_CR_FULL_DUPLEX;
|
|
|
1643 |
e_dbg("Half Duplex\n");
|
|
|
1644 |
}
|
|
|
1645 |
|
|
|
1646 |
/* Are we forcing 100Mbps??? */
|
|
|
1647 |
if (hw->forced_speed_duplex == e1000_100_full ||
|
|
|
1648 |
hw->forced_speed_duplex == e1000_100_half) {
|
|
|
1649 |
/* Set the 100Mb bit and turn off the 1000Mb and 10Mb bits. */
|
|
|
1650 |
ctrl |= E1000_CTRL_SPD_100;
|
|
|
1651 |
mii_ctrl_reg |= MII_CR_SPEED_100;
|
|
|
1652 |
mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10);
|
|
|
1653 |
e_dbg("Forcing 100mb ");
|
|
|
1654 |
} else {
|
|
|
1655 |
/* Set the 10Mb bit and turn off the 1000Mb and 100Mb bits. */
|
|
|
1656 |
ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
|
|
|
1657 |
mii_ctrl_reg |= MII_CR_SPEED_10;
|
|
|
1658 |
mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100);
|
|
|
1659 |
e_dbg("Forcing 10mb ");
|
|
|
1660 |
}
|
|
|
1661 |
|
|
|
1662 |
e1000_config_collision_dist(hw);
|
|
|
1663 |
|
|
|
1664 |
/* Write the configured values back to the Device Control Reg. */
|
|
|
1665 |
ew32(CTRL, ctrl);
|
|
|
1666 |
|
|
|
1667 |
if (hw->phy_type == e1000_phy_m88) {
|
|
|
1668 |
ret_val =
|
|
|
1669 |
e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
|
|
|
1670 |
if (ret_val)
|
|
|
1671 |
return ret_val;
|
|
|
1672 |
|
|
|
1673 |
/* Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI
|
|
|
1674 |
* forced whenever speed are duplex are forced.
|
|
|
1675 |
*/
|
|
|
1676 |
phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
|
|
|
1677 |
ret_val =
|
|
|
1678 |
e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
|
|
|
1679 |
if (ret_val)
|
|
|
1680 |
return ret_val;
|
|
|
1681 |
|
|
|
1682 |
e_dbg("M88E1000 PSCR: %x\n", phy_data);
|
|
|
1683 |
|
|
|
1684 |
/* Need to reset the PHY or these changes will be ignored */
|
|
|
1685 |
mii_ctrl_reg |= MII_CR_RESET;
|
|
|
1686 |
|
|
|
1687 |
/* Disable MDI-X support for 10/100 */
|
|
|
1688 |
} else {
|
|
|
1689 |
/* Clear Auto-Crossover to force MDI manually. IGP requires MDI
|
|
|
1690 |
* forced whenever speed or duplex are forced.
|
|
|
1691 |
*/
|
|
|
1692 |
ret_val =
|
|
|
1693 |
e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
|
|
|
1694 |
if (ret_val)
|
|
|
1695 |
return ret_val;
|
|
|
1696 |
|
|
|
1697 |
phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
|
|
|
1698 |
phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
|
|
|
1699 |
|
|
|
1700 |
ret_val =
|
|
|
1701 |
e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
|
|
|
1702 |
if (ret_val)
|
|
|
1703 |
return ret_val;
|
|
|
1704 |
}
|
|
|
1705 |
|
|
|
1706 |
/* Write back the modified PHY MII control register. */
|
|
|
1707 |
ret_val = e1000_write_phy_reg(hw, PHY_CTRL, mii_ctrl_reg);
|
|
|
1708 |
if (ret_val)
|
|
|
1709 |
return ret_val;
|
|
|
1710 |
|
|
|
1711 |
udelay(1);
|
|
|
1712 |
|
|
|
1713 |
/* The wait_autoneg_complete flag may be a little misleading here.
|
|
|
1714 |
* Since we are forcing speed and duplex, Auto-Neg is not enabled.
|
|
|
1715 |
* But we do want to delay for a period while forcing only so we
|
|
|
1716 |
* don't generate false No Link messages. So we will wait here
|
|
|
1717 |
* only if the user has set wait_autoneg_complete to 1, which is
|
|
|
1718 |
* the default.
|
|
|
1719 |
*/
|
|
|
1720 |
if (hw->wait_autoneg_complete) {
|
|
|
1721 |
/* We will wait for autoneg to complete. */
|
|
|
1722 |
e_dbg("Waiting for forced speed/duplex link.\n");
|
|
|
1723 |
mii_status_reg = 0;
|
|
|
1724 |
|
|
|
1725 |
/* We will wait for autoneg to complete or 4.5 seconds to expire. */
|
|
|
1726 |
for (i = PHY_FORCE_TIME; i > 0; i--) {
|
|
|
1727 |
/* Read the MII Status Register and wait for Auto-Neg Complete bit
|
|
|
1728 |
* to be set.
|
|
|
1729 |
*/
|
|
|
1730 |
ret_val =
|
|
|
1731 |
e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
1732 |
if (ret_val)
|
|
|
1733 |
return ret_val;
|
|
|
1734 |
|
|
|
1735 |
ret_val =
|
|
|
1736 |
e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
1737 |
if (ret_val)
|
|
|
1738 |
return ret_val;
|
|
|
1739 |
|
|
|
1740 |
if (mii_status_reg & MII_SR_LINK_STATUS)
|
|
|
1741 |
break;
|
|
|
1742 |
msleep(100);
|
|
|
1743 |
}
|
|
|
1744 |
if ((i == 0) && (hw->phy_type == e1000_phy_m88)) {
|
|
|
1745 |
/* We didn't get link. Reset the DSP and wait again for link. */
|
|
|
1746 |
ret_val = e1000_phy_reset_dsp(hw);
|
|
|
1747 |
if (ret_val) {
|
|
|
1748 |
e_dbg("Error Resetting PHY DSP\n");
|
|
|
1749 |
return ret_val;
|
|
|
1750 |
}
|
|
|
1751 |
}
|
|
|
1752 |
/* This loop will early-out if the link condition has been met. */
|
|
|
1753 |
for (i = PHY_FORCE_TIME; i > 0; i--) {
|
|
|
1754 |
if (mii_status_reg & MII_SR_LINK_STATUS)
|
|
|
1755 |
break;
|
|
|
1756 |
msleep(100);
|
|
|
1757 |
/* Read the MII Status Register and wait for Auto-Neg Complete bit
|
|
|
1758 |
* to be set.
|
|
|
1759 |
*/
|
|
|
1760 |
ret_val =
|
|
|
1761 |
e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
1762 |
if (ret_val)
|
|
|
1763 |
return ret_val;
|
|
|
1764 |
|
|
|
1765 |
ret_val =
|
|
|
1766 |
e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
1767 |
if (ret_val)
|
|
|
1768 |
return ret_val;
|
|
|
1769 |
}
|
|
|
1770 |
}
|
|
|
1771 |
|
|
|
1772 |
if (hw->phy_type == e1000_phy_m88) {
|
|
|
1773 |
/* Because we reset the PHY above, we need to re-force TX_CLK in the
|
|
|
1774 |
* Extended PHY Specific Control Register to 25MHz clock. This value
|
|
|
1775 |
* defaults back to a 2.5MHz clock when the PHY is reset.
|
|
|
1776 |
*/
|
|
|
1777 |
ret_val =
|
|
|
1778 |
e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
|
|
|
1779 |
&phy_data);
|
|
|
1780 |
if (ret_val)
|
|
|
1781 |
return ret_val;
|
|
|
1782 |
|
|
|
1783 |
phy_data |= M88E1000_EPSCR_TX_CLK_25;
|
|
|
1784 |
ret_val =
|
|
|
1785 |
e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
|
|
|
1786 |
phy_data);
|
|
|
1787 |
if (ret_val)
|
|
|
1788 |
return ret_val;
|
|
|
1789 |
|
|
|
1790 |
/* In addition, because of the s/w reset above, we need to enable CRS on
|
|
|
1791 |
* TX. This must be set for both full and half duplex operation.
|
|
|
1792 |
*/
|
|
|
1793 |
ret_val =
|
|
|
1794 |
e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
|
|
|
1795 |
if (ret_val)
|
|
|
1796 |
return ret_val;
|
|
|
1797 |
|
|
|
1798 |
phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
|
|
|
1799 |
ret_val =
|
|
|
1800 |
e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
|
|
|
1801 |
if (ret_val)
|
|
|
1802 |
return ret_val;
|
|
|
1803 |
|
|
|
1804 |
if ((hw->mac_type == e1000_82544 || hw->mac_type == e1000_82543)
|
|
|
1805 |
&& (!hw->autoneg)
|
|
|
1806 |
&& (hw->forced_speed_duplex == e1000_10_full
|
|
|
1807 |
|| hw->forced_speed_duplex == e1000_10_half)) {
|
|
|
1808 |
ret_val = e1000_polarity_reversal_workaround(hw);
|
|
|
1809 |
if (ret_val)
|
|
|
1810 |
return ret_val;
|
|
|
1811 |
}
|
|
|
1812 |
}
|
|
|
1813 |
return E1000_SUCCESS;
|
|
|
1814 |
}
|
|
|
1815 |
|
|
|
1816 |
/**
|
|
|
1817 |
* e1000_config_collision_dist - set collision distance register
|
|
|
1818 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1819 |
*
|
|
|
1820 |
* Sets the collision distance in the Transmit Control register.
|
|
|
1821 |
* Link should have been established previously. Reads the speed and duplex
|
|
|
1822 |
* information from the Device Status register.
|
|
|
1823 |
*/
|
|
|
1824 |
void e1000_config_collision_dist(struct e1000_hw *hw)
|
|
|
1825 |
{
|
|
|
1826 |
u32 tctl, coll_dist;
|
|
|
1827 |
|
|
|
1828 |
e_dbg("e1000_config_collision_dist");
|
|
|
1829 |
|
|
|
1830 |
if (hw->mac_type < e1000_82543)
|
|
|
1831 |
coll_dist = E1000_COLLISION_DISTANCE_82542;
|
|
|
1832 |
else
|
|
|
1833 |
coll_dist = E1000_COLLISION_DISTANCE;
|
|
|
1834 |
|
|
|
1835 |
tctl = er32(TCTL);
|
|
|
1836 |
|
|
|
1837 |
tctl &= ~E1000_TCTL_COLD;
|
|
|
1838 |
tctl |= coll_dist << E1000_COLD_SHIFT;
|
|
|
1839 |
|
|
|
1840 |
ew32(TCTL, tctl);
|
|
|
1841 |
E1000_WRITE_FLUSH();
|
|
|
1842 |
}
|
|
|
1843 |
|
|
|
1844 |
/**
|
|
|
1845 |
* e1000_config_mac_to_phy - sync phy and mac settings
|
|
|
1846 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1847 |
* @mii_reg: data to write to the MII control register
|
|
|
1848 |
*
|
|
|
1849 |
* Sets MAC speed and duplex settings to reflect the those in the PHY
|
|
|
1850 |
* The contents of the PHY register containing the needed information need to
|
|
|
1851 |
* be passed in.
|
|
|
1852 |
*/
|
|
|
1853 |
static s32 e1000_config_mac_to_phy(struct e1000_hw *hw)
|
|
|
1854 |
{
|
|
|
1855 |
u32 ctrl;
|
|
|
1856 |
s32 ret_val;
|
|
|
1857 |
u16 phy_data;
|
|
|
1858 |
|
|
|
1859 |
e_dbg("e1000_config_mac_to_phy");
|
|
|
1860 |
|
|
|
1861 |
/* 82544 or newer MAC, Auto Speed Detection takes care of
|
|
|
1862 |
* MAC speed/duplex configuration.*/
|
|
|
1863 |
if (hw->mac_type >= e1000_82544)
|
|
|
1864 |
return E1000_SUCCESS;
|
|
|
1865 |
|
|
|
1866 |
/* Read the Device Control Register and set the bits to Force Speed
|
|
|
1867 |
* and Duplex.
|
|
|
1868 |
*/
|
|
|
1869 |
ctrl = er32(CTRL);
|
|
|
1870 |
ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
|
|
|
1871 |
ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS);
|
|
|
1872 |
|
|
|
1873 |
/* Set up duplex in the Device Control and Transmit Control
|
|
|
1874 |
* registers depending on negotiated values.
|
|
|
1875 |
*/
|
|
|
1876 |
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
|
|
|
1877 |
if (ret_val)
|
|
|
1878 |
return ret_val;
|
|
|
1879 |
|
|
|
1880 |
if (phy_data & M88E1000_PSSR_DPLX)
|
|
|
1881 |
ctrl |= E1000_CTRL_FD;
|
|
|
1882 |
else
|
|
|
1883 |
ctrl &= ~E1000_CTRL_FD;
|
|
|
1884 |
|
|
|
1885 |
e1000_config_collision_dist(hw);
|
|
|
1886 |
|
|
|
1887 |
/* Set up speed in the Device Control register depending on
|
|
|
1888 |
* negotiated values.
|
|
|
1889 |
*/
|
|
|
1890 |
if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS)
|
|
|
1891 |
ctrl |= E1000_CTRL_SPD_1000;
|
|
|
1892 |
else if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS)
|
|
|
1893 |
ctrl |= E1000_CTRL_SPD_100;
|
|
|
1894 |
|
|
|
1895 |
/* Write the configured values back to the Device Control Reg. */
|
|
|
1896 |
ew32(CTRL, ctrl);
|
|
|
1897 |
return E1000_SUCCESS;
|
|
|
1898 |
}
|
|
|
1899 |
|
|
|
1900 |
/**
|
|
|
1901 |
* e1000_force_mac_fc - force flow control settings
|
|
|
1902 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1903 |
*
|
|
|
1904 |
* Forces the MAC's flow control settings.
|
|
|
1905 |
* Sets the TFCE and RFCE bits in the device control register to reflect
|
|
|
1906 |
* the adapter settings. TFCE and RFCE need to be explicitly set by
|
|
|
1907 |
* software when a Copper PHY is used because autonegotiation is managed
|
|
|
1908 |
* by the PHY rather than the MAC. Software must also configure these
|
|
|
1909 |
* bits when link is forced on a fiber connection.
|
|
|
1910 |
*/
|
|
|
1911 |
s32 e1000_force_mac_fc(struct e1000_hw *hw)
|
|
|
1912 |
{
|
|
|
1913 |
u32 ctrl;
|
|
|
1914 |
|
|
|
1915 |
e_dbg("e1000_force_mac_fc");
|
|
|
1916 |
|
|
|
1917 |
/* Get the current configuration of the Device Control Register */
|
|
|
1918 |
ctrl = er32(CTRL);
|
|
|
1919 |
|
|
|
1920 |
/* Because we didn't get link via the internal auto-negotiation
|
|
|
1921 |
* mechanism (we either forced link or we got link via PHY
|
|
|
1922 |
* auto-neg), we have to manually enable/disable transmit an
|
|
|
1923 |
* receive flow control.
|
|
|
1924 |
*
|
|
|
1925 |
* The "Case" statement below enables/disable flow control
|
|
|
1926 |
* according to the "hw->fc" parameter.
|
|
|
1927 |
*
|
|
|
1928 |
* The possible values of the "fc" parameter are:
|
|
|
1929 |
* 0: Flow control is completely disabled
|
|
|
1930 |
* 1: Rx flow control is enabled (we can receive pause
|
|
|
1931 |
* frames but not send pause frames).
|
|
|
1932 |
* 2: Tx flow control is enabled (we can send pause frames
|
|
|
1933 |
* frames but we do not receive pause frames).
|
|
|
1934 |
* 3: Both Rx and TX flow control (symmetric) is enabled.
|
|
|
1935 |
* other: No other values should be possible at this point.
|
|
|
1936 |
*/
|
|
|
1937 |
|
|
|
1938 |
switch (hw->fc) {
|
|
|
1939 |
case E1000_FC_NONE:
|
|
|
1940 |
ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE));
|
|
|
1941 |
break;
|
|
|
1942 |
case E1000_FC_RX_PAUSE:
|
|
|
1943 |
ctrl &= (~E1000_CTRL_TFCE);
|
|
|
1944 |
ctrl |= E1000_CTRL_RFCE;
|
|
|
1945 |
break;
|
|
|
1946 |
case E1000_FC_TX_PAUSE:
|
|
|
1947 |
ctrl &= (~E1000_CTRL_RFCE);
|
|
|
1948 |
ctrl |= E1000_CTRL_TFCE;
|
|
|
1949 |
break;
|
|
|
1950 |
case E1000_FC_FULL:
|
|
|
1951 |
ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE);
|
|
|
1952 |
break;
|
|
|
1953 |
default:
|
|
|
1954 |
e_dbg("Flow control param set incorrectly\n");
|
|
|
1955 |
return -E1000_ERR_CONFIG;
|
|
|
1956 |
}
|
|
|
1957 |
|
|
|
1958 |
/* Disable TX Flow Control for 82542 (rev 2.0) */
|
|
|
1959 |
if (hw->mac_type == e1000_82542_rev2_0)
|
|
|
1960 |
ctrl &= (~E1000_CTRL_TFCE);
|
|
|
1961 |
|
|
|
1962 |
ew32(CTRL, ctrl);
|
|
|
1963 |
return E1000_SUCCESS;
|
|
|
1964 |
}
|
|
|
1965 |
|
|
|
1966 |
/**
|
|
|
1967 |
* e1000_config_fc_after_link_up - configure flow control after autoneg
|
|
|
1968 |
* @hw: Struct containing variables accessed by shared code
|
|
|
1969 |
*
|
|
|
1970 |
* Configures flow control settings after link is established
|
|
|
1971 |
* Should be called immediately after a valid link has been established.
|
|
|
1972 |
* Forces MAC flow control settings if link was forced. When in MII/GMII mode
|
|
|
1973 |
* and autonegotiation is enabled, the MAC flow control settings will be set
|
|
|
1974 |
* based on the flow control negotiated by the PHY. In TBI mode, the TFCE
|
|
|
1975 |
* and RFCE bits will be automatically set to the negotiated flow control mode.
|
|
|
1976 |
*/
|
|
|
1977 |
static s32 e1000_config_fc_after_link_up(struct e1000_hw *hw)
|
|
|
1978 |
{
|
|
|
1979 |
s32 ret_val;
|
|
|
1980 |
u16 mii_status_reg;
|
|
|
1981 |
u16 mii_nway_adv_reg;
|
|
|
1982 |
u16 mii_nway_lp_ability_reg;
|
|
|
1983 |
u16 speed;
|
|
|
1984 |
u16 duplex;
|
|
|
1985 |
|
|
|
1986 |
e_dbg("e1000_config_fc_after_link_up");
|
|
|
1987 |
|
|
|
1988 |
/* Check for the case where we have fiber media and auto-neg failed
|
|
|
1989 |
* so we had to force link. In this case, we need to force the
|
|
|
1990 |
* configuration of the MAC to match the "fc" parameter.
|
|
|
1991 |
*/
|
|
|
1992 |
if (((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed))
|
|
|
1993 |
|| ((hw->media_type == e1000_media_type_internal_serdes)
|
|
|
1994 |
&& (hw->autoneg_failed))
|
|
|
1995 |
|| ((hw->media_type == e1000_media_type_copper)
|
|
|
1996 |
&& (!hw->autoneg))) {
|
|
|
1997 |
ret_val = e1000_force_mac_fc(hw);
|
|
|
1998 |
if (ret_val) {
|
|
|
1999 |
e_dbg("Error forcing flow control settings\n");
|
|
|
2000 |
return ret_val;
|
|
|
2001 |
}
|
|
|
2002 |
}
|
|
|
2003 |
|
|
|
2004 |
/* Check for the case where we have copper media and auto-neg is
|
|
|
2005 |
* enabled. In this case, we need to check and see if Auto-Neg
|
|
|
2006 |
* has completed, and if so, how the PHY and link partner has
|
|
|
2007 |
* flow control configured.
|
|
|
2008 |
*/
|
|
|
2009 |
if ((hw->media_type == e1000_media_type_copper) && hw->autoneg) {
|
|
|
2010 |
/* Read the MII Status Register and check to see if AutoNeg
|
|
|
2011 |
* has completed. We read this twice because this reg has
|
|
|
2012 |
* some "sticky" (latched) bits.
|
|
|
2013 |
*/
|
|
|
2014 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
2015 |
if (ret_val)
|
|
|
2016 |
return ret_val;
|
|
|
2017 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
2018 |
if (ret_val)
|
|
|
2019 |
return ret_val;
|
|
|
2020 |
|
|
|
2021 |
if (mii_status_reg & MII_SR_AUTONEG_COMPLETE) {
|
|
|
2022 |
/* The AutoNeg process has completed, so we now need to
|
|
|
2023 |
* read both the Auto Negotiation Advertisement Register
|
|
|
2024 |
* (Address 4) and the Auto_Negotiation Base Page Ability
|
|
|
2025 |
* Register (Address 5) to determine how flow control was
|
|
|
2026 |
* negotiated.
|
|
|
2027 |
*/
|
|
|
2028 |
ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV,
|
|
|
2029 |
&mii_nway_adv_reg);
|
|
|
2030 |
if (ret_val)
|
|
|
2031 |
return ret_val;
|
|
|
2032 |
ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY,
|
|
|
2033 |
&mii_nway_lp_ability_reg);
|
|
|
2034 |
if (ret_val)
|
|
|
2035 |
return ret_val;
|
|
|
2036 |
|
|
|
2037 |
/* Two bits in the Auto Negotiation Advertisement Register
|
|
|
2038 |
* (Address 4) and two bits in the Auto Negotiation Base
|
|
|
2039 |
* Page Ability Register (Address 5) determine flow control
|
|
|
2040 |
* for both the PHY and the link partner. The following
|
|
|
2041 |
* table, taken out of the IEEE 802.3ab/D6.0 dated March 25,
|
|
|
2042 |
* 1999, describes these PAUSE resolution bits and how flow
|
|
|
2043 |
* control is determined based upon these settings.
|
|
|
2044 |
* NOTE: DC = Don't Care
|
|
|
2045 |
*
|
|
|
2046 |
* LOCAL DEVICE | LINK PARTNER
|
|
|
2047 |
* PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution
|
|
|
2048 |
*-------|---------|-------|---------|--------------------
|
|
|
2049 |
* 0 | 0 | DC | DC | E1000_FC_NONE
|
|
|
2050 |
* 0 | 1 | 0 | DC | E1000_FC_NONE
|
|
|
2051 |
* 0 | 1 | 1 | 0 | E1000_FC_NONE
|
|
|
2052 |
* 0 | 1 | 1 | 1 | E1000_FC_TX_PAUSE
|
|
|
2053 |
* 1 | 0 | 0 | DC | E1000_FC_NONE
|
|
|
2054 |
* 1 | DC | 1 | DC | E1000_FC_FULL
|
|
|
2055 |
* 1 | 1 | 0 | 0 | E1000_FC_NONE
|
|
|
2056 |
* 1 | 1 | 0 | 1 | E1000_FC_RX_PAUSE
|
|
|
2057 |
*
|
|
|
2058 |
*/
|
|
|
2059 |
/* Are both PAUSE bits set to 1? If so, this implies
|
|
|
2060 |
* Symmetric Flow Control is enabled at both ends. The
|
|
|
2061 |
* ASM_DIR bits are irrelevant per the spec.
|
|
|
2062 |
*
|
|
|
2063 |
* For Symmetric Flow Control:
|
|
|
2064 |
*
|
|
|
2065 |
* LOCAL DEVICE | LINK PARTNER
|
|
|
2066 |
* PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
|
|
|
2067 |
*-------|---------|-------|---------|--------------------
|
|
|
2068 |
* 1 | DC | 1 | DC | E1000_FC_FULL
|
|
|
2069 |
*
|
|
|
2070 |
*/
|
|
|
2071 |
if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
|
|
|
2072 |
(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) {
|
|
|
2073 |
/* Now we need to check if the user selected RX ONLY
|
|
|
2074 |
* of pause frames. In this case, we had to advertise
|
|
|
2075 |
* FULL flow control because we could not advertise RX
|
|
|
2076 |
* ONLY. Hence, we must now check to see if we need to
|
|
|
2077 |
* turn OFF the TRANSMISSION of PAUSE frames.
|
|
|
2078 |
*/
|
|
|
2079 |
if (hw->original_fc == E1000_FC_FULL) {
|
|
|
2080 |
hw->fc = E1000_FC_FULL;
|
|
|
2081 |
e_dbg("Flow Control = FULL.\n");
|
|
|
2082 |
} else {
|
|
|
2083 |
hw->fc = E1000_FC_RX_PAUSE;
|
|
|
2084 |
e_dbg
|
|
|
2085 |
("Flow Control = RX PAUSE frames only.\n");
|
|
|
2086 |
}
|
|
|
2087 |
}
|
|
|
2088 |
/* For receiving PAUSE frames ONLY.
|
|
|
2089 |
*
|
|
|
2090 |
* LOCAL DEVICE | LINK PARTNER
|
|
|
2091 |
* PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
|
|
|
2092 |
*-------|---------|-------|---------|--------------------
|
|
|
2093 |
* 0 | 1 | 1 | 1 | E1000_FC_TX_PAUSE
|
|
|
2094 |
*
|
|
|
2095 |
*/
|
|
|
2096 |
else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) &&
|
|
|
2097 |
(mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
|
|
|
2098 |
(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
|
|
|
2099 |
(mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
|
|
|
2100 |
{
|
|
|
2101 |
hw->fc = E1000_FC_TX_PAUSE;
|
|
|
2102 |
e_dbg
|
|
|
2103 |
("Flow Control = TX PAUSE frames only.\n");
|
|
|
2104 |
}
|
|
|
2105 |
/* For transmitting PAUSE frames ONLY.
|
|
|
2106 |
*
|
|
|
2107 |
* LOCAL DEVICE | LINK PARTNER
|
|
|
2108 |
* PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
|
|
|
2109 |
*-------|---------|-------|---------|--------------------
|
|
|
2110 |
* 1 | 1 | 0 | 1 | E1000_FC_RX_PAUSE
|
|
|
2111 |
*
|
|
|
2112 |
*/
|
|
|
2113 |
else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
|
|
|
2114 |
(mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
|
|
|
2115 |
!(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
|
|
|
2116 |
(mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
|
|
|
2117 |
{
|
|
|
2118 |
hw->fc = E1000_FC_RX_PAUSE;
|
|
|
2119 |
e_dbg
|
|
|
2120 |
("Flow Control = RX PAUSE frames only.\n");
|
|
|
2121 |
}
|
|
|
2122 |
/* Per the IEEE spec, at this point flow control should be
|
|
|
2123 |
* disabled. However, we want to consider that we could
|
|
|
2124 |
* be connected to a legacy switch that doesn't advertise
|
|
|
2125 |
* desired flow control, but can be forced on the link
|
|
|
2126 |
* partner. So if we advertised no flow control, that is
|
|
|
2127 |
* what we will resolve to. If we advertised some kind of
|
|
|
2128 |
* receive capability (Rx Pause Only or Full Flow Control)
|
|
|
2129 |
* and the link partner advertised none, we will configure
|
|
|
2130 |
* ourselves to enable Rx Flow Control only. We can do
|
|
|
2131 |
* this safely for two reasons: If the link partner really
|
|
|
2132 |
* didn't want flow control enabled, and we enable Rx, no
|
|
|
2133 |
* harm done since we won't be receiving any PAUSE frames
|
|
|
2134 |
* anyway. If the intent on the link partner was to have
|
|
|
2135 |
* flow control enabled, then by us enabling RX only, we
|
|
|
2136 |
* can at least receive pause frames and process them.
|
|
|
2137 |
* This is a good idea because in most cases, since we are
|
|
|
2138 |
* predominantly a server NIC, more times than not we will
|
|
|
2139 |
* be asked to delay transmission of packets than asking
|
|
|
2140 |
* our link partner to pause transmission of frames.
|
|
|
2141 |
*/
|
|
|
2142 |
else if ((hw->original_fc == E1000_FC_NONE ||
|
|
|
2143 |
hw->original_fc == E1000_FC_TX_PAUSE) ||
|
|
|
2144 |
hw->fc_strict_ieee) {
|
|
|
2145 |
hw->fc = E1000_FC_NONE;
|
|
|
2146 |
e_dbg("Flow Control = NONE.\n");
|
|
|
2147 |
} else {
|
|
|
2148 |
hw->fc = E1000_FC_RX_PAUSE;
|
|
|
2149 |
e_dbg
|
|
|
2150 |
("Flow Control = RX PAUSE frames only.\n");
|
|
|
2151 |
}
|
|
|
2152 |
|
|
|
2153 |
/* Now we need to do one last check... If we auto-
|
|
|
2154 |
* negotiated to HALF DUPLEX, flow control should not be
|
|
|
2155 |
* enabled per IEEE 802.3 spec.
|
|
|
2156 |
*/
|
|
|
2157 |
ret_val =
|
|
|
2158 |
e1000_get_speed_and_duplex(hw, &speed, &duplex);
|
|
|
2159 |
if (ret_val) {
|
|
|
2160 |
e_dbg
|
|
|
2161 |
("Error getting link speed and duplex\n");
|
|
|
2162 |
return ret_val;
|
|
|
2163 |
}
|
|
|
2164 |
|
|
|
2165 |
if (duplex == HALF_DUPLEX)
|
|
|
2166 |
hw->fc = E1000_FC_NONE;
|
|
|
2167 |
|
|
|
2168 |
/* Now we call a subroutine to actually force the MAC
|
|
|
2169 |
* controller to use the correct flow control settings.
|
|
|
2170 |
*/
|
|
|
2171 |
ret_val = e1000_force_mac_fc(hw);
|
|
|
2172 |
if (ret_val) {
|
|
|
2173 |
e_dbg
|
|
|
2174 |
("Error forcing flow control settings\n");
|
|
|
2175 |
return ret_val;
|
|
|
2176 |
}
|
|
|
2177 |
} else {
|
|
|
2178 |
e_dbg
|
|
|
2179 |
("Copper PHY and Auto Neg has not completed.\n");
|
|
|
2180 |
}
|
|
|
2181 |
}
|
|
|
2182 |
return E1000_SUCCESS;
|
|
|
2183 |
}
|
|
|
2184 |
|
|
|
2185 |
/**
|
|
|
2186 |
* e1000_check_for_serdes_link_generic - Check for link (Serdes)
|
|
|
2187 |
* @hw: pointer to the HW structure
|
|
|
2188 |
*
|
|
|
2189 |
* Checks for link up on the hardware. If link is not up and we have
|
|
|
2190 |
* a signal, then we need to force link up.
|
|
|
2191 |
*/
|
|
|
2192 |
static s32 e1000_check_for_serdes_link_generic(struct e1000_hw *hw)
|
|
|
2193 |
{
|
|
|
2194 |
u32 rxcw;
|
|
|
2195 |
u32 ctrl;
|
|
|
2196 |
u32 status;
|
|
|
2197 |
s32 ret_val = E1000_SUCCESS;
|
|
|
2198 |
|
|
|
2199 |
e_dbg("e1000_check_for_serdes_link_generic");
|
|
|
2200 |
|
|
|
2201 |
ctrl = er32(CTRL);
|
|
|
2202 |
status = er32(STATUS);
|
|
|
2203 |
rxcw = er32(RXCW);
|
|
|
2204 |
|
|
|
2205 |
/*
|
|
|
2206 |
* If we don't have link (auto-negotiation failed or link partner
|
|
|
2207 |
* cannot auto-negotiate), and our link partner is not trying to
|
|
|
2208 |
* auto-negotiate with us (we are receiving idles or data),
|
|
|
2209 |
* we need to force link up. We also need to give auto-negotiation
|
|
|
2210 |
* time to complete.
|
|
|
2211 |
*/
|
|
|
2212 |
/* (ctrl & E1000_CTRL_SWDPIN1) == 1 == have signal */
|
|
|
2213 |
if ((!(status & E1000_STATUS_LU)) && (!(rxcw & E1000_RXCW_C))) {
|
|
|
2214 |
if (hw->autoneg_failed == 0) {
|
|
|
2215 |
hw->autoneg_failed = 1;
|
|
|
2216 |
goto out;
|
|
|
2217 |
}
|
|
|
2218 |
e_dbg("NOT RXing /C/, disable AutoNeg and force link.\n");
|
|
|
2219 |
|
|
|
2220 |
/* Disable auto-negotiation in the TXCW register */
|
|
|
2221 |
ew32(TXCW, (hw->txcw & ~E1000_TXCW_ANE));
|
|
|
2222 |
|
|
|
2223 |
/* Force link-up and also force full-duplex. */
|
|
|
2224 |
ctrl = er32(CTRL);
|
|
|
2225 |
ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
|
|
|
2226 |
ew32(CTRL, ctrl);
|
|
|
2227 |
|
|
|
2228 |
/* Configure Flow Control after forcing link up. */
|
|
|
2229 |
ret_val = e1000_config_fc_after_link_up(hw);
|
|
|
2230 |
if (ret_val) {
|
|
|
2231 |
e_dbg("Error configuring flow control\n");
|
|
|
2232 |
goto out;
|
|
|
2233 |
}
|
|
|
2234 |
} else if ((ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
|
|
|
2235 |
/*
|
|
|
2236 |
* If we are forcing link and we are receiving /C/ ordered
|
|
|
2237 |
* sets, re-enable auto-negotiation in the TXCW register
|
|
|
2238 |
* and disable forced link in the Device Control register
|
|
|
2239 |
* in an attempt to auto-negotiate with our link partner.
|
|
|
2240 |
*/
|
|
|
2241 |
e_dbg("RXing /C/, enable AutoNeg and stop forcing link.\n");
|
|
|
2242 |
ew32(TXCW, hw->txcw);
|
|
|
2243 |
ew32(CTRL, (ctrl & ~E1000_CTRL_SLU));
|
|
|
2244 |
|
|
|
2245 |
hw->serdes_has_link = true;
|
|
|
2246 |
} else if (!(E1000_TXCW_ANE & er32(TXCW))) {
|
|
|
2247 |
/*
|
|
|
2248 |
* If we force link for non-auto-negotiation switch, check
|
|
|
2249 |
* link status based on MAC synchronization for internal
|
|
|
2250 |
* serdes media type.
|
|
|
2251 |
*/
|
|
|
2252 |
/* SYNCH bit and IV bit are sticky. */
|
|
|
2253 |
udelay(10);
|
|
|
2254 |
rxcw = er32(RXCW);
|
|
|
2255 |
if (rxcw & E1000_RXCW_SYNCH) {
|
|
|
2256 |
if (!(rxcw & E1000_RXCW_IV)) {
|
|
|
2257 |
hw->serdes_has_link = true;
|
|
|
2258 |
e_dbg("SERDES: Link up - forced.\n");
|
|
|
2259 |
}
|
|
|
2260 |
} else {
|
|
|
2261 |
hw->serdes_has_link = false;
|
|
|
2262 |
e_dbg("SERDES: Link down - force failed.\n");
|
|
|
2263 |
}
|
|
|
2264 |
}
|
|
|
2265 |
|
|
|
2266 |
if (E1000_TXCW_ANE & er32(TXCW)) {
|
|
|
2267 |
status = er32(STATUS);
|
|
|
2268 |
if (status & E1000_STATUS_LU) {
|
|
|
2269 |
/* SYNCH bit and IV bit are sticky, so reread rxcw. */
|
|
|
2270 |
udelay(10);
|
|
|
2271 |
rxcw = er32(RXCW);
|
|
|
2272 |
if (rxcw & E1000_RXCW_SYNCH) {
|
|
|
2273 |
if (!(rxcw & E1000_RXCW_IV)) {
|
|
|
2274 |
hw->serdes_has_link = true;
|
|
|
2275 |
e_dbg("SERDES: Link up - autoneg "
|
|
|
2276 |
"completed successfully.\n");
|
|
|
2277 |
} else {
|
|
|
2278 |
hw->serdes_has_link = false;
|
|
|
2279 |
e_dbg("SERDES: Link down - invalid"
|
|
|
2280 |
"codewords detected in autoneg.\n");
|
|
|
2281 |
}
|
|
|
2282 |
} else {
|
|
|
2283 |
hw->serdes_has_link = false;
|
|
|
2284 |
e_dbg("SERDES: Link down - no sync.\n");
|
|
|
2285 |
}
|
|
|
2286 |
} else {
|
|
|
2287 |
hw->serdes_has_link = false;
|
|
|
2288 |
e_dbg("SERDES: Link down - autoneg failed\n");
|
|
|
2289 |
}
|
|
|
2290 |
}
|
|
|
2291 |
|
|
|
2292 |
out:
|
|
|
2293 |
return ret_val;
|
|
|
2294 |
}
|
|
|
2295 |
|
|
|
2296 |
/**
|
|
|
2297 |
* e1000_check_for_link
|
|
|
2298 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2299 |
*
|
|
|
2300 |
* Checks to see if the link status of the hardware has changed.
|
|
|
2301 |
* Called by any function that needs to check the link status of the adapter.
|
|
|
2302 |
*/
|
|
|
2303 |
s32 e1000_check_for_link(struct e1000_hw *hw)
|
|
|
2304 |
{
|
|
|
2305 |
u32 rxcw __attribute__ ((unused)) = 0;
|
|
|
2306 |
u32 ctrl __attribute__ ((unused));
|
|
|
2307 |
u32 status;
|
|
|
2308 |
u32 rctl;
|
|
|
2309 |
u32 icr;
|
|
|
2310 |
u32 signal __attribute__ ((unused)) = 0;
|
|
|
2311 |
s32 ret_val;
|
|
|
2312 |
u16 phy_data;
|
|
|
2313 |
|
|
|
2314 |
e_dbg("e1000_check_for_link");
|
|
|
2315 |
|
|
|
2316 |
ctrl = er32(CTRL);
|
|
|
2317 |
status = er32(STATUS);
|
|
|
2318 |
|
|
|
2319 |
/* On adapters with a MAC newer than 82544, SW Definable pin 1 will be
|
|
|
2320 |
* set when the optics detect a signal. On older adapters, it will be
|
|
|
2321 |
* cleared when there is a signal. This applies to fiber media only.
|
|
|
2322 |
*/
|
|
|
2323 |
if ((hw->media_type == e1000_media_type_fiber) ||
|
|
|
2324 |
(hw->media_type == e1000_media_type_internal_serdes)) {
|
|
|
2325 |
rxcw = er32(RXCW);
|
|
|
2326 |
|
|
|
2327 |
if (hw->media_type == e1000_media_type_fiber) {
|
|
|
2328 |
signal =
|
|
|
2329 |
(hw->mac_type >
|
|
|
2330 |
e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
|
|
|
2331 |
if (status & E1000_STATUS_LU)
|
|
|
2332 |
hw->get_link_status = false;
|
|
|
2333 |
}
|
|
|
2334 |
}
|
|
|
2335 |
|
|
|
2336 |
/* If we have a copper PHY then we only want to go out to the PHY
|
|
|
2337 |
* registers to see if Auto-Neg has completed and/or if our link
|
|
|
2338 |
* status has changed. The get_link_status flag will be set if we
|
|
|
2339 |
* receive a Link Status Change interrupt or we have Rx Sequence
|
|
|
2340 |
* Errors.
|
|
|
2341 |
*/
|
|
|
2342 |
if ((hw->media_type == e1000_media_type_copper) && hw->get_link_status) {
|
|
|
2343 |
/* First we want to see if the MII Status Register reports
|
|
|
2344 |
* link. If so, then we want to get the current speed/duplex
|
|
|
2345 |
* of the PHY.
|
|
|
2346 |
* Read the register twice since the link bit is sticky.
|
|
|
2347 |
*/
|
|
|
2348 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
|
|
|
2349 |
if (ret_val)
|
|
|
2350 |
return ret_val;
|
|
|
2351 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
|
|
|
2352 |
if (ret_val)
|
|
|
2353 |
return ret_val;
|
|
|
2354 |
|
|
|
2355 |
if (phy_data & MII_SR_LINK_STATUS) {
|
|
|
2356 |
hw->get_link_status = false;
|
|
|
2357 |
/* Check if there was DownShift, must be checked immediately after
|
|
|
2358 |
* link-up */
|
|
|
2359 |
e1000_check_downshift(hw);
|
|
|
2360 |
|
|
|
2361 |
/* If we are on 82544 or 82543 silicon and speed/duplex
|
|
|
2362 |
* are forced to 10H or 10F, then we will implement the polarity
|
|
|
2363 |
* reversal workaround. We disable interrupts first, and upon
|
|
|
2364 |
* returning, place the devices interrupt state to its previous
|
|
|
2365 |
* value except for the link status change interrupt which will
|
|
|
2366 |
* happen due to the execution of this workaround.
|
|
|
2367 |
*/
|
|
|
2368 |
|
|
|
2369 |
if ((hw->mac_type == e1000_82544
|
|
|
2370 |
|| hw->mac_type == e1000_82543) && (!hw->autoneg)
|
|
|
2371 |
&& (hw->forced_speed_duplex == e1000_10_full
|
|
|
2372 |
|| hw->forced_speed_duplex == e1000_10_half)) {
|
|
|
2373 |
ew32(IMC, 0xffffffff);
|
|
|
2374 |
ret_val =
|
|
|
2375 |
e1000_polarity_reversal_workaround(hw);
|
|
|
2376 |
icr = er32(ICR);
|
|
|
2377 |
ew32(ICS, (icr & ~E1000_ICS_LSC));
|
|
|
2378 |
ew32(IMS, IMS_ENABLE_MASK);
|
|
|
2379 |
}
|
|
|
2380 |
|
|
|
2381 |
} else {
|
|
|
2382 |
/* No link detected */
|
|
|
2383 |
e1000_config_dsp_after_link_change(hw, false);
|
|
|
2384 |
return 0;
|
|
|
2385 |
}
|
|
|
2386 |
|
|
|
2387 |
/* If we are forcing speed/duplex, then we simply return since
|
|
|
2388 |
* we have already determined whether we have link or not.
|
|
|
2389 |
*/
|
|
|
2390 |
if (!hw->autoneg)
|
|
|
2391 |
return -E1000_ERR_CONFIG;
|
|
|
2392 |
|
|
|
2393 |
/* optimize the dsp settings for the igp phy */
|
|
|
2394 |
e1000_config_dsp_after_link_change(hw, true);
|
|
|
2395 |
|
|
|
2396 |
/* We have a M88E1000 PHY and Auto-Neg is enabled. If we
|
|
|
2397 |
* have Si on board that is 82544 or newer, Auto
|
|
|
2398 |
* Speed Detection takes care of MAC speed/duplex
|
|
|
2399 |
* configuration. So we only need to configure Collision
|
|
|
2400 |
* Distance in the MAC. Otherwise, we need to force
|
|
|
2401 |
* speed/duplex on the MAC to the current PHY speed/duplex
|
|
|
2402 |
* settings.
|
|
|
2403 |
*/
|
|
|
2404 |
if (hw->mac_type >= e1000_82544)
|
|
|
2405 |
e1000_config_collision_dist(hw);
|
|
|
2406 |
else {
|
|
|
2407 |
ret_val = e1000_config_mac_to_phy(hw);
|
|
|
2408 |
if (ret_val) {
|
|
|
2409 |
e_dbg
|
|
|
2410 |
("Error configuring MAC to PHY settings\n");
|
|
|
2411 |
return ret_val;
|
|
|
2412 |
}
|
|
|
2413 |
}
|
|
|
2414 |
|
|
|
2415 |
/* Configure Flow Control now that Auto-Neg has completed. First, we
|
|
|
2416 |
* need to restore the desired flow control settings because we may
|
|
|
2417 |
* have had to re-autoneg with a different link partner.
|
|
|
2418 |
*/
|
|
|
2419 |
ret_val = e1000_config_fc_after_link_up(hw);
|
|
|
2420 |
if (ret_val) {
|
|
|
2421 |
e_dbg("Error configuring flow control\n");
|
|
|
2422 |
return ret_val;
|
|
|
2423 |
}
|
|
|
2424 |
|
|
|
2425 |
/* At this point we know that we are on copper and we have
|
|
|
2426 |
* auto-negotiated link. These are conditions for checking the link
|
|
|
2427 |
* partner capability register. We use the link speed to determine if
|
|
|
2428 |
* TBI compatibility needs to be turned on or off. If the link is not
|
|
|
2429 |
* at gigabit speed, then TBI compatibility is not needed. If we are
|
|
|
2430 |
* at gigabit speed, we turn on TBI compatibility.
|
|
|
2431 |
*/
|
|
|
2432 |
if (hw->tbi_compatibility_en) {
|
|
|
2433 |
u16 speed, duplex;
|
|
|
2434 |
ret_val =
|
|
|
2435 |
e1000_get_speed_and_duplex(hw, &speed, &duplex);
|
|
|
2436 |
if (ret_val) {
|
|
|
2437 |
e_dbg
|
|
|
2438 |
("Error getting link speed and duplex\n");
|
|
|
2439 |
return ret_val;
|
|
|
2440 |
}
|
|
|
2441 |
if (speed != SPEED_1000) {
|
|
|
2442 |
/* If link speed is not set to gigabit speed, we do not need
|
|
|
2443 |
* to enable TBI compatibility.
|
|
|
2444 |
*/
|
|
|
2445 |
if (hw->tbi_compatibility_on) {
|
|
|
2446 |
/* If we previously were in the mode, turn it off. */
|
|
|
2447 |
rctl = er32(RCTL);
|
|
|
2448 |
rctl &= ~E1000_RCTL_SBP;
|
|
|
2449 |
ew32(RCTL, rctl);
|
|
|
2450 |
hw->tbi_compatibility_on = false;
|
|
|
2451 |
}
|
|
|
2452 |
} else {
|
|
|
2453 |
/* If TBI compatibility is was previously off, turn it on. For
|
|
|
2454 |
* compatibility with a TBI link partner, we will store bad
|
|
|
2455 |
* packets. Some frames have an additional byte on the end and
|
|
|
2456 |
* will look like CRC errors to to the hardware.
|
|
|
2457 |
*/
|
|
|
2458 |
if (!hw->tbi_compatibility_on) {
|
|
|
2459 |
hw->tbi_compatibility_on = true;
|
|
|
2460 |
rctl = er32(RCTL);
|
|
|
2461 |
rctl |= E1000_RCTL_SBP;
|
|
|
2462 |
ew32(RCTL, rctl);
|
|
|
2463 |
}
|
|
|
2464 |
}
|
|
|
2465 |
}
|
|
|
2466 |
}
|
|
|
2467 |
|
|
|
2468 |
if ((hw->media_type == e1000_media_type_fiber) ||
|
|
|
2469 |
(hw->media_type == e1000_media_type_internal_serdes))
|
|
|
2470 |
e1000_check_for_serdes_link_generic(hw);
|
|
|
2471 |
|
|
|
2472 |
return E1000_SUCCESS;
|
|
|
2473 |
}
|
|
|
2474 |
|
|
|
2475 |
/**
|
|
|
2476 |
* e1000_get_speed_and_duplex
|
|
|
2477 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2478 |
* @speed: Speed of the connection
|
|
|
2479 |
* @duplex: Duplex setting of the connection
|
|
|
2480 |
|
|
|
2481 |
* Detects the current speed and duplex settings of the hardware.
|
|
|
2482 |
*/
|
|
|
2483 |
s32 e1000_get_speed_and_duplex(struct e1000_hw *hw, u16 *speed, u16 *duplex)
|
|
|
2484 |
{
|
|
|
2485 |
u32 status;
|
|
|
2486 |
s32 ret_val;
|
|
|
2487 |
u16 phy_data;
|
|
|
2488 |
|
|
|
2489 |
e_dbg("e1000_get_speed_and_duplex");
|
|
|
2490 |
|
|
|
2491 |
if (hw->mac_type >= e1000_82543) {
|
|
|
2492 |
status = er32(STATUS);
|
|
|
2493 |
if (status & E1000_STATUS_SPEED_1000) {
|
|
|
2494 |
*speed = SPEED_1000;
|
|
|
2495 |
e_dbg("1000 Mbs, ");
|
|
|
2496 |
} else if (status & E1000_STATUS_SPEED_100) {
|
|
|
2497 |
*speed = SPEED_100;
|
|
|
2498 |
e_dbg("100 Mbs, ");
|
|
|
2499 |
} else {
|
|
|
2500 |
*speed = SPEED_10;
|
|
|
2501 |
e_dbg("10 Mbs, ");
|
|
|
2502 |
}
|
|
|
2503 |
|
|
|
2504 |
if (status & E1000_STATUS_FD) {
|
|
|
2505 |
*duplex = FULL_DUPLEX;
|
|
|
2506 |
e_dbg("Full Duplex\n");
|
|
|
2507 |
} else {
|
|
|
2508 |
*duplex = HALF_DUPLEX;
|
|
|
2509 |
e_dbg(" Half Duplex\n");
|
|
|
2510 |
}
|
|
|
2511 |
} else {
|
|
|
2512 |
e_dbg("1000 Mbs, Full Duplex\n");
|
|
|
2513 |
*speed = SPEED_1000;
|
|
|
2514 |
*duplex = FULL_DUPLEX;
|
|
|
2515 |
}
|
|
|
2516 |
|
|
|
2517 |
/* IGP01 PHY may advertise full duplex operation after speed downgrade even
|
|
|
2518 |
* if it is operating at half duplex. Here we set the duplex settings to
|
|
|
2519 |
* match the duplex in the link partner's capabilities.
|
|
|
2520 |
*/
|
|
|
2521 |
if (hw->phy_type == e1000_phy_igp && hw->speed_downgraded) {
|
|
|
2522 |
ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data);
|
|
|
2523 |
if (ret_val)
|
|
|
2524 |
return ret_val;
|
|
|
2525 |
|
|
|
2526 |
if (!(phy_data & NWAY_ER_LP_NWAY_CAPS))
|
|
|
2527 |
*duplex = HALF_DUPLEX;
|
|
|
2528 |
else {
|
|
|
2529 |
ret_val =
|
|
|
2530 |
e1000_read_phy_reg(hw, PHY_LP_ABILITY, &phy_data);
|
|
|
2531 |
if (ret_val)
|
|
|
2532 |
return ret_val;
|
|
|
2533 |
if ((*speed == SPEED_100
|
|
|
2534 |
&& !(phy_data & NWAY_LPAR_100TX_FD_CAPS))
|
|
|
2535 |
|| (*speed == SPEED_10
|
|
|
2536 |
&& !(phy_data & NWAY_LPAR_10T_FD_CAPS)))
|
|
|
2537 |
*duplex = HALF_DUPLEX;
|
|
|
2538 |
}
|
|
|
2539 |
}
|
|
|
2540 |
|
|
|
2541 |
return E1000_SUCCESS;
|
|
|
2542 |
}
|
|
|
2543 |
|
|
|
2544 |
/**
|
|
|
2545 |
* e1000_wait_autoneg
|
|
|
2546 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2547 |
*
|
|
|
2548 |
* Blocks until autoneg completes or times out (~4.5 seconds)
|
|
|
2549 |
*/
|
|
|
2550 |
static s32 e1000_wait_autoneg(struct e1000_hw *hw)
|
|
|
2551 |
{
|
|
|
2552 |
s32 ret_val;
|
|
|
2553 |
u16 i;
|
|
|
2554 |
u16 phy_data;
|
|
|
2555 |
|
|
|
2556 |
e_dbg("e1000_wait_autoneg");
|
|
|
2557 |
e_dbg("Waiting for Auto-Neg to complete.\n");
|
|
|
2558 |
|
|
|
2559 |
/* We will wait for autoneg to complete or 4.5 seconds to expire. */
|
|
|
2560 |
for (i = PHY_AUTO_NEG_TIME; i > 0; i--) {
|
|
|
2561 |
/* Read the MII Status Register and wait for Auto-Neg
|
|
|
2562 |
* Complete bit to be set.
|
|
|
2563 |
*/
|
|
|
2564 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
|
|
|
2565 |
if (ret_val)
|
|
|
2566 |
return ret_val;
|
|
|
2567 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
|
|
|
2568 |
if (ret_val)
|
|
|
2569 |
return ret_val;
|
|
|
2570 |
if (phy_data & MII_SR_AUTONEG_COMPLETE) {
|
|
|
2571 |
return E1000_SUCCESS;
|
|
|
2572 |
}
|
|
|
2573 |
msleep(100);
|
|
|
2574 |
}
|
|
|
2575 |
return E1000_SUCCESS;
|
|
|
2576 |
}
|
|
|
2577 |
|
|
|
2578 |
/**
|
|
|
2579 |
* e1000_raise_mdi_clk - Raises the Management Data Clock
|
|
|
2580 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2581 |
* @ctrl: Device control register's current value
|
|
|
2582 |
*/
|
|
|
2583 |
static void e1000_raise_mdi_clk(struct e1000_hw *hw, u32 *ctrl)
|
|
|
2584 |
{
|
|
|
2585 |
/* Raise the clock input to the Management Data Clock (by setting the MDC
|
|
|
2586 |
* bit), and then delay 10 microseconds.
|
|
|
2587 |
*/
|
|
|
2588 |
ew32(CTRL, (*ctrl | E1000_CTRL_MDC));
|
|
|
2589 |
E1000_WRITE_FLUSH();
|
|
|
2590 |
udelay(10);
|
|
|
2591 |
}
|
|
|
2592 |
|
|
|
2593 |
/**
|
|
|
2594 |
* e1000_lower_mdi_clk - Lowers the Management Data Clock
|
|
|
2595 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2596 |
* @ctrl: Device control register's current value
|
|
|
2597 |
*/
|
|
|
2598 |
static void e1000_lower_mdi_clk(struct e1000_hw *hw, u32 *ctrl)
|
|
|
2599 |
{
|
|
|
2600 |
/* Lower the clock input to the Management Data Clock (by clearing the MDC
|
|
|
2601 |
* bit), and then delay 10 microseconds.
|
|
|
2602 |
*/
|
|
|
2603 |
ew32(CTRL, (*ctrl & ~E1000_CTRL_MDC));
|
|
|
2604 |
E1000_WRITE_FLUSH();
|
|
|
2605 |
udelay(10);
|
|
|
2606 |
}
|
|
|
2607 |
|
|
|
2608 |
/**
|
|
|
2609 |
* e1000_shift_out_mdi_bits - Shifts data bits out to the PHY
|
|
|
2610 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2611 |
* @data: Data to send out to the PHY
|
|
|
2612 |
* @count: Number of bits to shift out
|
|
|
2613 |
*
|
|
|
2614 |
* Bits are shifted out in MSB to LSB order.
|
|
|
2615 |
*/
|
|
|
2616 |
static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, u32 data, u16 count)
|
|
|
2617 |
{
|
|
|
2618 |
u32 ctrl;
|
|
|
2619 |
u32 mask;
|
|
|
2620 |
|
|
|
2621 |
/* We need to shift "count" number of bits out to the PHY. So, the value
|
|
|
2622 |
* in the "data" parameter will be shifted out to the PHY one bit at a
|
|
|
2623 |
* time. In order to do this, "data" must be broken down into bits.
|
|
|
2624 |
*/
|
|
|
2625 |
mask = 0x01;
|
|
|
2626 |
mask <<= (count - 1);
|
|
|
2627 |
|
|
|
2628 |
ctrl = er32(CTRL);
|
|
|
2629 |
|
|
|
2630 |
/* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */
|
|
|
2631 |
ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR);
|
|
|
2632 |
|
|
|
2633 |
while (mask) {
|
|
|
2634 |
/* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and
|
|
|
2635 |
* then raising and lowering the Management Data Clock. A "0" is
|
|
|
2636 |
* shifted out to the PHY by setting the MDIO bit to "0" and then
|
|
|
2637 |
* raising and lowering the clock.
|
|
|
2638 |
*/
|
|
|
2639 |
if (data & mask)
|
|
|
2640 |
ctrl |= E1000_CTRL_MDIO;
|
|
|
2641 |
else
|
|
|
2642 |
ctrl &= ~E1000_CTRL_MDIO;
|
|
|
2643 |
|
|
|
2644 |
ew32(CTRL, ctrl);
|
|
|
2645 |
E1000_WRITE_FLUSH();
|
|
|
2646 |
|
|
|
2647 |
udelay(10);
|
|
|
2648 |
|
|
|
2649 |
e1000_raise_mdi_clk(hw, &ctrl);
|
|
|
2650 |
e1000_lower_mdi_clk(hw, &ctrl);
|
|
|
2651 |
|
|
|
2652 |
mask = mask >> 1;
|
|
|
2653 |
}
|
|
|
2654 |
}
|
|
|
2655 |
|
|
|
2656 |
/**
|
|
|
2657 |
* e1000_shift_in_mdi_bits - Shifts data bits in from the PHY
|
|
|
2658 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2659 |
*
|
|
|
2660 |
* Bits are shifted in in MSB to LSB order.
|
|
|
2661 |
*/
|
|
|
2662 |
static u16 e1000_shift_in_mdi_bits(struct e1000_hw *hw)
|
|
|
2663 |
{
|
|
|
2664 |
u32 ctrl;
|
|
|
2665 |
u16 data = 0;
|
|
|
2666 |
u8 i;
|
|
|
2667 |
|
|
|
2668 |
/* In order to read a register from the PHY, we need to shift in a total
|
|
|
2669 |
* of 18 bits from the PHY. The first two bit (turnaround) times are used
|
|
|
2670 |
* to avoid contention on the MDIO pin when a read operation is performed.
|
|
|
2671 |
* These two bits are ignored by us and thrown away. Bits are "shifted in"
|
|
|
2672 |
* by raising the input to the Management Data Clock (setting the MDC bit),
|
|
|
2673 |
* and then reading the value of the MDIO bit.
|
|
|
2674 |
*/
|
|
|
2675 |
ctrl = er32(CTRL);
|
|
|
2676 |
|
|
|
2677 |
/* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */
|
|
|
2678 |
ctrl &= ~E1000_CTRL_MDIO_DIR;
|
|
|
2679 |
ctrl &= ~E1000_CTRL_MDIO;
|
|
|
2680 |
|
|
|
2681 |
ew32(CTRL, ctrl);
|
|
|
2682 |
E1000_WRITE_FLUSH();
|
|
|
2683 |
|
|
|
2684 |
/* Raise and Lower the clock before reading in the data. This accounts for
|
|
|
2685 |
* the turnaround bits. The first clock occurred when we clocked out the
|
|
|
2686 |
* last bit of the Register Address.
|
|
|
2687 |
*/
|
|
|
2688 |
e1000_raise_mdi_clk(hw, &ctrl);
|
|
|
2689 |
e1000_lower_mdi_clk(hw, &ctrl);
|
|
|
2690 |
|
|
|
2691 |
for (data = 0, i = 0; i < 16; i++) {
|
|
|
2692 |
data = data << 1;
|
|
|
2693 |
e1000_raise_mdi_clk(hw, &ctrl);
|
|
|
2694 |
ctrl = er32(CTRL);
|
|
|
2695 |
/* Check to see if we shifted in a "1". */
|
|
|
2696 |
if (ctrl & E1000_CTRL_MDIO)
|
|
|
2697 |
data |= 1;
|
|
|
2698 |
e1000_lower_mdi_clk(hw, &ctrl);
|
|
|
2699 |
}
|
|
|
2700 |
|
|
|
2701 |
e1000_raise_mdi_clk(hw, &ctrl);
|
|
|
2702 |
e1000_lower_mdi_clk(hw, &ctrl);
|
|
|
2703 |
|
|
|
2704 |
return data;
|
|
|
2705 |
}
|
|
|
2706 |
|
|
|
2707 |
|
|
|
2708 |
/**
|
|
|
2709 |
* e1000_read_phy_reg - read a phy register
|
|
|
2710 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2711 |
* @reg_addr: address of the PHY register to read
|
|
|
2712 |
*
|
|
|
2713 |
* Reads the value from a PHY register, if the value is on a specific non zero
|
|
|
2714 |
* page, sets the page first.
|
|
|
2715 |
*/
|
|
|
2716 |
s32 e1000_read_phy_reg(struct e1000_hw *hw, u32 reg_addr, u16 *phy_data)
|
|
|
2717 |
{
|
|
|
2718 |
u32 ret_val;
|
|
|
2719 |
|
|
|
2720 |
e_dbg("e1000_read_phy_reg");
|
|
|
2721 |
|
|
|
2722 |
if ((hw->phy_type == e1000_phy_igp) &&
|
|
|
2723 |
(reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
|
|
|
2724 |
ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
|
|
|
2725 |
(u16) reg_addr);
|
|
|
2726 |
if (ret_val)
|
|
|
2727 |
return ret_val;
|
|
|
2728 |
}
|
|
|
2729 |
|
|
|
2730 |
ret_val = e1000_read_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr,
|
|
|
2731 |
phy_data);
|
|
|
2732 |
|
|
|
2733 |
return ret_val;
|
|
|
2734 |
}
|
|
|
2735 |
|
|
|
2736 |
static s32 e1000_read_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr,
|
|
|
2737 |
u16 *phy_data)
|
|
|
2738 |
{
|
|
|
2739 |
u32 i;
|
|
|
2740 |
u32 mdic = 0;
|
|
|
2741 |
const u32 phy_addr = 1;
|
|
|
2742 |
|
|
|
2743 |
e_dbg("e1000_read_phy_reg_ex");
|
|
|
2744 |
|
|
|
2745 |
if (reg_addr > MAX_PHY_REG_ADDRESS) {
|
|
|
2746 |
e_dbg("PHY Address %d is out of range\n", reg_addr);
|
|
|
2747 |
return -E1000_ERR_PARAM;
|
|
|
2748 |
}
|
|
|
2749 |
|
|
|
2750 |
if (hw->mac_type > e1000_82543) {
|
|
|
2751 |
/* Set up Op-code, Phy Address, and register address in the MDI
|
|
|
2752 |
* Control register. The MAC will take care of interfacing with the
|
|
|
2753 |
* PHY to retrieve the desired data.
|
|
|
2754 |
*/
|
|
|
2755 |
mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) |
|
|
|
2756 |
(phy_addr << E1000_MDIC_PHY_SHIFT) |
|
|
|
2757 |
(E1000_MDIC_OP_READ));
|
|
|
2758 |
|
|
|
2759 |
ew32(MDIC, mdic);
|
|
|
2760 |
|
|
|
2761 |
/* Poll the ready bit to see if the MDI read completed */
|
|
|
2762 |
for (i = 0; i < 64; i++) {
|
|
|
2763 |
udelay(50);
|
|
|
2764 |
mdic = er32(MDIC);
|
|
|
2765 |
if (mdic & E1000_MDIC_READY)
|
|
|
2766 |
break;
|
|
|
2767 |
}
|
|
|
2768 |
if (!(mdic & E1000_MDIC_READY)) {
|
|
|
2769 |
e_dbg("MDI Read did not complete\n");
|
|
|
2770 |
return -E1000_ERR_PHY;
|
|
|
2771 |
}
|
|
|
2772 |
if (mdic & E1000_MDIC_ERROR) {
|
|
|
2773 |
e_dbg("MDI Error\n");
|
|
|
2774 |
return -E1000_ERR_PHY;
|
|
|
2775 |
}
|
|
|
2776 |
*phy_data = (u16) mdic;
|
|
|
2777 |
} else {
|
|
|
2778 |
/* We must first send a preamble through the MDIO pin to signal the
|
|
|
2779 |
* beginning of an MII instruction. This is done by sending 32
|
|
|
2780 |
* consecutive "1" bits.
|
|
|
2781 |
*/
|
|
|
2782 |
e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
|
|
|
2783 |
|
|
|
2784 |
/* Now combine the next few fields that are required for a read
|
|
|
2785 |
* operation. We use this method instead of calling the
|
|
|
2786 |
* e1000_shift_out_mdi_bits routine five different times. The format of
|
|
|
2787 |
* a MII read instruction consists of a shift out of 14 bits and is
|
|
|
2788 |
* defined as follows:
|
|
|
2789 |
* <Preamble><SOF><Op Code><Phy Addr><Reg Addr>
|
|
|
2790 |
* followed by a shift in of 18 bits. This first two bits shifted in
|
|
|
2791 |
* are TurnAround bits used to avoid contention on the MDIO pin when a
|
|
|
2792 |
* READ operation is performed. These two bits are thrown away
|
|
|
2793 |
* followed by a shift in of 16 bits which contains the desired data.
|
|
|
2794 |
*/
|
|
|
2795 |
mdic = ((reg_addr) | (phy_addr << 5) |
|
|
|
2796 |
(PHY_OP_READ << 10) | (PHY_SOF << 12));
|
|
|
2797 |
|
|
|
2798 |
e1000_shift_out_mdi_bits(hw, mdic, 14);
|
|
|
2799 |
|
|
|
2800 |
/* Now that we've shifted out the read command to the MII, we need to
|
|
|
2801 |
* "shift in" the 16-bit value (18 total bits) of the requested PHY
|
|
|
2802 |
* register address.
|
|
|
2803 |
*/
|
|
|
2804 |
*phy_data = e1000_shift_in_mdi_bits(hw);
|
|
|
2805 |
}
|
|
|
2806 |
return E1000_SUCCESS;
|
|
|
2807 |
}
|
|
|
2808 |
|
|
|
2809 |
/**
|
|
|
2810 |
* e1000_write_phy_reg - write a phy register
|
|
|
2811 |
*
|
|
|
2812 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2813 |
* @reg_addr: address of the PHY register to write
|
|
|
2814 |
* @data: data to write to the PHY
|
|
|
2815 |
|
|
|
2816 |
* Writes a value to a PHY register
|
|
|
2817 |
*/
|
|
|
2818 |
s32 e1000_write_phy_reg(struct e1000_hw *hw, u32 reg_addr, u16 phy_data)
|
|
|
2819 |
{
|
|
|
2820 |
u32 ret_val;
|
|
|
2821 |
|
|
|
2822 |
e_dbg("e1000_write_phy_reg");
|
|
|
2823 |
|
|
|
2824 |
if ((hw->phy_type == e1000_phy_igp) &&
|
|
|
2825 |
(reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
|
|
|
2826 |
ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
|
|
|
2827 |
(u16) reg_addr);
|
|
|
2828 |
if (ret_val)
|
|
|
2829 |
return ret_val;
|
|
|
2830 |
}
|
|
|
2831 |
|
|
|
2832 |
ret_val = e1000_write_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr,
|
|
|
2833 |
phy_data);
|
|
|
2834 |
|
|
|
2835 |
return ret_val;
|
|
|
2836 |
}
|
|
|
2837 |
|
|
|
2838 |
static s32 e1000_write_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr,
|
|
|
2839 |
u16 phy_data)
|
|
|
2840 |
{
|
|
|
2841 |
u32 i;
|
|
|
2842 |
u32 mdic = 0;
|
|
|
2843 |
const u32 phy_addr = 1;
|
|
|
2844 |
|
|
|
2845 |
e_dbg("e1000_write_phy_reg_ex");
|
|
|
2846 |
|
|
|
2847 |
if (reg_addr > MAX_PHY_REG_ADDRESS) {
|
|
|
2848 |
e_dbg("PHY Address %d is out of range\n", reg_addr);
|
|
|
2849 |
return -E1000_ERR_PARAM;
|
|
|
2850 |
}
|
|
|
2851 |
|
|
|
2852 |
if (hw->mac_type > e1000_82543) {
|
|
|
2853 |
/* Set up Op-code, Phy Address, register address, and data intended
|
|
|
2854 |
* for the PHY register in the MDI Control register. The MAC will take
|
|
|
2855 |
* care of interfacing with the PHY to send the desired data.
|
|
|
2856 |
*/
|
|
|
2857 |
mdic = (((u32) phy_data) |
|
|
|
2858 |
(reg_addr << E1000_MDIC_REG_SHIFT) |
|
|
|
2859 |
(phy_addr << E1000_MDIC_PHY_SHIFT) |
|
|
|
2860 |
(E1000_MDIC_OP_WRITE));
|
|
|
2861 |
|
|
|
2862 |
ew32(MDIC, mdic);
|
|
|
2863 |
|
|
|
2864 |
/* Poll the ready bit to see if the MDI read completed */
|
|
|
2865 |
for (i = 0; i < 641; i++) {
|
|
|
2866 |
udelay(5);
|
|
|
2867 |
mdic = er32(MDIC);
|
|
|
2868 |
if (mdic & E1000_MDIC_READY)
|
|
|
2869 |
break;
|
|
|
2870 |
}
|
|
|
2871 |
if (!(mdic & E1000_MDIC_READY)) {
|
|
|
2872 |
e_dbg("MDI Write did not complete\n");
|
|
|
2873 |
return -E1000_ERR_PHY;
|
|
|
2874 |
}
|
|
|
2875 |
} else {
|
|
|
2876 |
/* We'll need to use the SW defined pins to shift the write command
|
|
|
2877 |
* out to the PHY. We first send a preamble to the PHY to signal the
|
|
|
2878 |
* beginning of the MII instruction. This is done by sending 32
|
|
|
2879 |
* consecutive "1" bits.
|
|
|
2880 |
*/
|
|
|
2881 |
e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
|
|
|
2882 |
|
|
|
2883 |
/* Now combine the remaining required fields that will indicate a
|
|
|
2884 |
* write operation. We use this method instead of calling the
|
|
|
2885 |
* e1000_shift_out_mdi_bits routine for each field in the command. The
|
|
|
2886 |
* format of a MII write instruction is as follows:
|
|
|
2887 |
* <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>.
|
|
|
2888 |
*/
|
|
|
2889 |
mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) |
|
|
|
2890 |
(PHY_OP_WRITE << 12) | (PHY_SOF << 14));
|
|
|
2891 |
mdic <<= 16;
|
|
|
2892 |
mdic |= (u32) phy_data;
|
|
|
2893 |
|
|
|
2894 |
e1000_shift_out_mdi_bits(hw, mdic, 32);
|
|
|
2895 |
}
|
|
|
2896 |
|
|
|
2897 |
return E1000_SUCCESS;
|
|
|
2898 |
}
|
|
|
2899 |
|
|
|
2900 |
/**
|
|
|
2901 |
* e1000_phy_hw_reset - reset the phy, hardware style
|
|
|
2902 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2903 |
*
|
|
|
2904 |
* Returns the PHY to the power-on reset state
|
|
|
2905 |
*/
|
|
|
2906 |
s32 e1000_phy_hw_reset(struct e1000_hw *hw)
|
|
|
2907 |
{
|
|
|
2908 |
u32 ctrl, ctrl_ext;
|
|
|
2909 |
u32 led_ctrl;
|
|
|
2910 |
s32 ret_val;
|
|
|
2911 |
|
|
|
2912 |
e_dbg("e1000_phy_hw_reset");
|
|
|
2913 |
|
|
|
2914 |
e_dbg("Resetting Phy...\n");
|
|
|
2915 |
|
|
|
2916 |
if (hw->mac_type > e1000_82543) {
|
|
|
2917 |
/* Read the device control register and assert the E1000_CTRL_PHY_RST
|
|
|
2918 |
* bit. Then, take it out of reset.
|
|
|
2919 |
* For e1000 hardware, we delay for 10ms between the assert
|
|
|
2920 |
* and deassert.
|
|
|
2921 |
*/
|
|
|
2922 |
ctrl = er32(CTRL);
|
|
|
2923 |
ew32(CTRL, ctrl | E1000_CTRL_PHY_RST);
|
|
|
2924 |
E1000_WRITE_FLUSH();
|
|
|
2925 |
|
|
|
2926 |
msleep(10);
|
|
|
2927 |
|
|
|
2928 |
ew32(CTRL, ctrl);
|
|
|
2929 |
E1000_WRITE_FLUSH();
|
|
|
2930 |
|
|
|
2931 |
} else {
|
|
|
2932 |
/* Read the Extended Device Control Register, assert the PHY_RESET_DIR
|
|
|
2933 |
* bit to put the PHY into reset. Then, take it out of reset.
|
|
|
2934 |
*/
|
|
|
2935 |
ctrl_ext = er32(CTRL_EXT);
|
|
|
2936 |
ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR;
|
|
|
2937 |
ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA;
|
|
|
2938 |
ew32(CTRL_EXT, ctrl_ext);
|
|
|
2939 |
E1000_WRITE_FLUSH();
|
|
|
2940 |
msleep(10);
|
|
|
2941 |
ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA;
|
|
|
2942 |
ew32(CTRL_EXT, ctrl_ext);
|
|
|
2943 |
E1000_WRITE_FLUSH();
|
|
|
2944 |
}
|
|
|
2945 |
udelay(150);
|
|
|
2946 |
|
|
|
2947 |
if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
|
|
|
2948 |
/* Configure activity LED after PHY reset */
|
|
|
2949 |
led_ctrl = er32(LEDCTL);
|
|
|
2950 |
led_ctrl &= IGP_ACTIVITY_LED_MASK;
|
|
|
2951 |
led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
|
|
|
2952 |
ew32(LEDCTL, led_ctrl);
|
|
|
2953 |
}
|
|
|
2954 |
|
|
|
2955 |
/* Wait for FW to finish PHY configuration. */
|
|
|
2956 |
ret_val = e1000_get_phy_cfg_done(hw);
|
|
|
2957 |
if (ret_val != E1000_SUCCESS)
|
|
|
2958 |
return ret_val;
|
|
|
2959 |
|
|
|
2960 |
return ret_val;
|
|
|
2961 |
}
|
|
|
2962 |
|
|
|
2963 |
/**
|
|
|
2964 |
* e1000_phy_reset - reset the phy to commit settings
|
|
|
2965 |
* @hw: Struct containing variables accessed by shared code
|
|
|
2966 |
*
|
|
|
2967 |
* Resets the PHY
|
|
|
2968 |
* Sets bit 15 of the MII Control register
|
|
|
2969 |
*/
|
|
|
2970 |
s32 e1000_phy_reset(struct e1000_hw *hw)
|
|
|
2971 |
{
|
|
|
2972 |
s32 ret_val;
|
|
|
2973 |
u16 phy_data;
|
|
|
2974 |
|
|
|
2975 |
e_dbg("e1000_phy_reset");
|
|
|
2976 |
|
|
|
2977 |
switch (hw->phy_type) {
|
|
|
2978 |
case e1000_phy_igp:
|
|
|
2979 |
ret_val = e1000_phy_hw_reset(hw);
|
|
|
2980 |
if (ret_val)
|
|
|
2981 |
return ret_val;
|
|
|
2982 |
break;
|
|
|
2983 |
default:
|
|
|
2984 |
ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
|
|
|
2985 |
if (ret_val)
|
|
|
2986 |
return ret_val;
|
|
|
2987 |
|
|
|
2988 |
phy_data |= MII_CR_RESET;
|
|
|
2989 |
ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
|
|
|
2990 |
if (ret_val)
|
|
|
2991 |
return ret_val;
|
|
|
2992 |
|
|
|
2993 |
udelay(1);
|
|
|
2994 |
break;
|
|
|
2995 |
}
|
|
|
2996 |
|
|
|
2997 |
if (hw->phy_type == e1000_phy_igp)
|
|
|
2998 |
e1000_phy_init_script(hw);
|
|
|
2999 |
|
|
|
3000 |
return E1000_SUCCESS;
|
|
|
3001 |
}
|
|
|
3002 |
|
|
|
3003 |
/**
|
|
|
3004 |
* e1000_detect_gig_phy - check the phy type
|
|
|
3005 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3006 |
*
|
|
|
3007 |
* Probes the expected PHY address for known PHY IDs
|
|
|
3008 |
*/
|
|
|
3009 |
static s32 e1000_detect_gig_phy(struct e1000_hw *hw)
|
|
|
3010 |
{
|
|
|
3011 |
s32 phy_init_status, ret_val;
|
|
|
3012 |
u16 phy_id_high, phy_id_low;
|
|
|
3013 |
bool match = false;
|
|
|
3014 |
|
|
|
3015 |
e_dbg("e1000_detect_gig_phy");
|
|
|
3016 |
|
|
|
3017 |
if (hw->phy_id != 0)
|
|
|
3018 |
return E1000_SUCCESS;
|
|
|
3019 |
|
|
|
3020 |
/* Read the PHY ID Registers to identify which PHY is onboard. */
|
|
|
3021 |
ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high);
|
|
|
3022 |
if (ret_val)
|
|
|
3023 |
return ret_val;
|
|
|
3024 |
|
|
|
3025 |
hw->phy_id = (u32) (phy_id_high << 16);
|
|
|
3026 |
udelay(20);
|
|
|
3027 |
ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low);
|
|
|
3028 |
if (ret_val)
|
|
|
3029 |
return ret_val;
|
|
|
3030 |
|
|
|
3031 |
hw->phy_id |= (u32) (phy_id_low & PHY_REVISION_MASK);
|
|
|
3032 |
hw->phy_revision = (u32) phy_id_low & ~PHY_REVISION_MASK;
|
|
|
3033 |
|
|
|
3034 |
switch (hw->mac_type) {
|
|
|
3035 |
case e1000_82543:
|
|
|
3036 |
if (hw->phy_id == M88E1000_E_PHY_ID)
|
|
|
3037 |
match = true;
|
|
|
3038 |
break;
|
|
|
3039 |
case e1000_82544:
|
|
|
3040 |
if (hw->phy_id == M88E1000_I_PHY_ID)
|
|
|
3041 |
match = true;
|
|
|
3042 |
break;
|
|
|
3043 |
case e1000_82540:
|
|
|
3044 |
case e1000_82545:
|
|
|
3045 |
case e1000_82545_rev_3:
|
|
|
3046 |
case e1000_82546:
|
|
|
3047 |
case e1000_82546_rev_3:
|
|
|
3048 |
if (hw->phy_id == M88E1011_I_PHY_ID)
|
|
|
3049 |
match = true;
|
|
|
3050 |
break;
|
|
|
3051 |
case e1000_82541:
|
|
|
3052 |
case e1000_82541_rev_2:
|
|
|
3053 |
case e1000_82547:
|
|
|
3054 |
case e1000_82547_rev_2:
|
|
|
3055 |
if (hw->phy_id == IGP01E1000_I_PHY_ID)
|
|
|
3056 |
match = true;
|
|
|
3057 |
break;
|
|
|
3058 |
default:
|
|
|
3059 |
e_dbg("Invalid MAC type %d\n", hw->mac_type);
|
|
|
3060 |
return -E1000_ERR_CONFIG;
|
|
|
3061 |
}
|
|
|
3062 |
phy_init_status = e1000_set_phy_type(hw);
|
|
|
3063 |
|
|
|
3064 |
if ((match) && (phy_init_status == E1000_SUCCESS)) {
|
|
|
3065 |
e_dbg("PHY ID 0x%X detected\n", hw->phy_id);
|
|
|
3066 |
return E1000_SUCCESS;
|
|
|
3067 |
}
|
|
|
3068 |
e_dbg("Invalid PHY ID 0x%X\n", hw->phy_id);
|
|
|
3069 |
return -E1000_ERR_PHY;
|
|
|
3070 |
}
|
|
|
3071 |
|
|
|
3072 |
/**
|
|
|
3073 |
* e1000_phy_reset_dsp - reset DSP
|
|
|
3074 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3075 |
*
|
|
|
3076 |
* Resets the PHY's DSP
|
|
|
3077 |
*/
|
|
|
3078 |
static s32 e1000_phy_reset_dsp(struct e1000_hw *hw)
|
|
|
3079 |
{
|
|
|
3080 |
s32 ret_val;
|
|
|
3081 |
e_dbg("e1000_phy_reset_dsp");
|
|
|
3082 |
|
|
|
3083 |
do {
|
|
|
3084 |
ret_val = e1000_write_phy_reg(hw, 29, 0x001d);
|
|
|
3085 |
if (ret_val)
|
|
|
3086 |
break;
|
|
|
3087 |
ret_val = e1000_write_phy_reg(hw, 30, 0x00c1);
|
|
|
3088 |
if (ret_val)
|
|
|
3089 |
break;
|
|
|
3090 |
ret_val = e1000_write_phy_reg(hw, 30, 0x0000);
|
|
|
3091 |
if (ret_val)
|
|
|
3092 |
break;
|
|
|
3093 |
ret_val = E1000_SUCCESS;
|
|
|
3094 |
} while (0);
|
|
|
3095 |
|
|
|
3096 |
return ret_val;
|
|
|
3097 |
}
|
|
|
3098 |
|
|
|
3099 |
/**
|
|
|
3100 |
* e1000_phy_igp_get_info - get igp specific registers
|
|
|
3101 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3102 |
* @phy_info: PHY information structure
|
|
|
3103 |
*
|
|
|
3104 |
* Get PHY information from various PHY registers for igp PHY only.
|
|
|
3105 |
*/
|
|
|
3106 |
static s32 e1000_phy_igp_get_info(struct e1000_hw *hw,
|
|
|
3107 |
struct e1000_phy_info *phy_info)
|
|
|
3108 |
{
|
|
|
3109 |
s32 ret_val;
|
|
|
3110 |
u16 phy_data, min_length, max_length, average;
|
|
|
3111 |
e1000_rev_polarity polarity;
|
|
|
3112 |
|
|
|
3113 |
e_dbg("e1000_phy_igp_get_info");
|
|
|
3114 |
|
|
|
3115 |
/* The downshift status is checked only once, after link is established,
|
|
|
3116 |
* and it stored in the hw->speed_downgraded parameter. */
|
|
|
3117 |
phy_info->downshift = (e1000_downshift) hw->speed_downgraded;
|
|
|
3118 |
|
|
|
3119 |
/* IGP01E1000 does not need to support it. */
|
|
|
3120 |
phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_normal;
|
|
|
3121 |
|
|
|
3122 |
/* IGP01E1000 always correct polarity reversal */
|
|
|
3123 |
phy_info->polarity_correction = e1000_polarity_reversal_enabled;
|
|
|
3124 |
|
|
|
3125 |
/* Check polarity status */
|
|
|
3126 |
ret_val = e1000_check_polarity(hw, &polarity);
|
|
|
3127 |
if (ret_val)
|
|
|
3128 |
return ret_val;
|
|
|
3129 |
|
|
|
3130 |
phy_info->cable_polarity = polarity;
|
|
|
3131 |
|
|
|
3132 |
ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, &phy_data);
|
|
|
3133 |
if (ret_val)
|
|
|
3134 |
return ret_val;
|
|
|
3135 |
|
|
|
3136 |
phy_info->mdix_mode =
|
|
|
3137 |
(e1000_auto_x_mode) ((phy_data & IGP01E1000_PSSR_MDIX) >>
|
|
|
3138 |
IGP01E1000_PSSR_MDIX_SHIFT);
|
|
|
3139 |
|
|
|
3140 |
if ((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
|
|
|
3141 |
IGP01E1000_PSSR_SPEED_1000MBPS) {
|
|
|
3142 |
/* Local/Remote Receiver Information are only valid at 1000 Mbps */
|
|
|
3143 |
ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
|
|
|
3144 |
if (ret_val)
|
|
|
3145 |
return ret_val;
|
|
|
3146 |
|
|
|
3147 |
phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >>
|
|
|
3148 |
SR_1000T_LOCAL_RX_STATUS_SHIFT) ?
|
|
|
3149 |
e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
|
|
|
3150 |
phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >>
|
|
|
3151 |
SR_1000T_REMOTE_RX_STATUS_SHIFT) ?
|
|
|
3152 |
e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
|
|
|
3153 |
|
|
|
3154 |
/* Get cable length */
|
|
|
3155 |
ret_val = e1000_get_cable_length(hw, &min_length, &max_length);
|
|
|
3156 |
if (ret_val)
|
|
|
3157 |
return ret_val;
|
|
|
3158 |
|
|
|
3159 |
/* Translate to old method */
|
|
|
3160 |
average = (max_length + min_length) / 2;
|
|
|
3161 |
|
|
|
3162 |
if (average <= e1000_igp_cable_length_50)
|
|
|
3163 |
phy_info->cable_length = e1000_cable_length_50;
|
|
|
3164 |
else if (average <= e1000_igp_cable_length_80)
|
|
|
3165 |
phy_info->cable_length = e1000_cable_length_50_80;
|
|
|
3166 |
else if (average <= e1000_igp_cable_length_110)
|
|
|
3167 |
phy_info->cable_length = e1000_cable_length_80_110;
|
|
|
3168 |
else if (average <= e1000_igp_cable_length_140)
|
|
|
3169 |
phy_info->cable_length = e1000_cable_length_110_140;
|
|
|
3170 |
else
|
|
|
3171 |
phy_info->cable_length = e1000_cable_length_140;
|
|
|
3172 |
}
|
|
|
3173 |
|
|
|
3174 |
return E1000_SUCCESS;
|
|
|
3175 |
}
|
|
|
3176 |
|
|
|
3177 |
/**
|
|
|
3178 |
* e1000_phy_m88_get_info - get m88 specific registers
|
|
|
3179 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3180 |
* @phy_info: PHY information structure
|
|
|
3181 |
*
|
|
|
3182 |
* Get PHY information from various PHY registers for m88 PHY only.
|
|
|
3183 |
*/
|
|
|
3184 |
static s32 e1000_phy_m88_get_info(struct e1000_hw *hw,
|
|
|
3185 |
struct e1000_phy_info *phy_info)
|
|
|
3186 |
{
|
|
|
3187 |
s32 ret_val;
|
|
|
3188 |
u16 phy_data;
|
|
|
3189 |
e1000_rev_polarity polarity;
|
|
|
3190 |
|
|
|
3191 |
e_dbg("e1000_phy_m88_get_info");
|
|
|
3192 |
|
|
|
3193 |
/* The downshift status is checked only once, after link is established,
|
|
|
3194 |
* and it stored in the hw->speed_downgraded parameter. */
|
|
|
3195 |
phy_info->downshift = (e1000_downshift) hw->speed_downgraded;
|
|
|
3196 |
|
|
|
3197 |
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
|
|
|
3198 |
if (ret_val)
|
|
|
3199 |
return ret_val;
|
|
|
3200 |
|
|
|
3201 |
phy_info->extended_10bt_distance =
|
|
|
3202 |
((phy_data & M88E1000_PSCR_10BT_EXT_DIST_ENABLE) >>
|
|
|
3203 |
M88E1000_PSCR_10BT_EXT_DIST_ENABLE_SHIFT) ?
|
|
|
3204 |
e1000_10bt_ext_dist_enable_lower :
|
|
|
3205 |
e1000_10bt_ext_dist_enable_normal;
|
|
|
3206 |
|
|
|
3207 |
phy_info->polarity_correction =
|
|
|
3208 |
((phy_data & M88E1000_PSCR_POLARITY_REVERSAL) >>
|
|
|
3209 |
M88E1000_PSCR_POLARITY_REVERSAL_SHIFT) ?
|
|
|
3210 |
e1000_polarity_reversal_disabled : e1000_polarity_reversal_enabled;
|
|
|
3211 |
|
|
|
3212 |
/* Check polarity status */
|
|
|
3213 |
ret_val = e1000_check_polarity(hw, &polarity);
|
|
|
3214 |
if (ret_val)
|
|
|
3215 |
return ret_val;
|
|
|
3216 |
phy_info->cable_polarity = polarity;
|
|
|
3217 |
|
|
|
3218 |
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
|
|
|
3219 |
if (ret_val)
|
|
|
3220 |
return ret_val;
|
|
|
3221 |
|
|
|
3222 |
phy_info->mdix_mode =
|
|
|
3223 |
(e1000_auto_x_mode) ((phy_data & M88E1000_PSSR_MDIX) >>
|
|
|
3224 |
M88E1000_PSSR_MDIX_SHIFT);
|
|
|
3225 |
|
|
|
3226 |
if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
|
|
|
3227 |
/* Cable Length Estimation and Local/Remote Receiver Information
|
|
|
3228 |
* are only valid at 1000 Mbps.
|
|
|
3229 |
*/
|
|
|
3230 |
phy_info->cable_length =
|
|
|
3231 |
(e1000_cable_length) ((phy_data &
|
|
|
3232 |
M88E1000_PSSR_CABLE_LENGTH) >>
|
|
|
3233 |
M88E1000_PSSR_CABLE_LENGTH_SHIFT);
|
|
|
3234 |
|
|
|
3235 |
ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
|
|
|
3236 |
if (ret_val)
|
|
|
3237 |
return ret_val;
|
|
|
3238 |
|
|
|
3239 |
phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >>
|
|
|
3240 |
SR_1000T_LOCAL_RX_STATUS_SHIFT) ?
|
|
|
3241 |
e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
|
|
|
3242 |
phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >>
|
|
|
3243 |
SR_1000T_REMOTE_RX_STATUS_SHIFT) ?
|
|
|
3244 |
e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
|
|
|
3245 |
|
|
|
3246 |
}
|
|
|
3247 |
|
|
|
3248 |
return E1000_SUCCESS;
|
|
|
3249 |
}
|
|
|
3250 |
|
|
|
3251 |
/**
|
|
|
3252 |
* e1000_phy_get_info - request phy info
|
|
|
3253 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3254 |
* @phy_info: PHY information structure
|
|
|
3255 |
*
|
|
|
3256 |
* Get PHY information from various PHY registers
|
|
|
3257 |
*/
|
|
|
3258 |
s32 e1000_phy_get_info(struct e1000_hw *hw, struct e1000_phy_info *phy_info)
|
|
|
3259 |
{
|
|
|
3260 |
s32 ret_val;
|
|
|
3261 |
u16 phy_data;
|
|
|
3262 |
|
|
|
3263 |
e_dbg("e1000_phy_get_info");
|
|
|
3264 |
|
|
|
3265 |
phy_info->cable_length = e1000_cable_length_undefined;
|
|
|
3266 |
phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_undefined;
|
|
|
3267 |
phy_info->cable_polarity = e1000_rev_polarity_undefined;
|
|
|
3268 |
phy_info->downshift = e1000_downshift_undefined;
|
|
|
3269 |
phy_info->polarity_correction = e1000_polarity_reversal_undefined;
|
|
|
3270 |
phy_info->mdix_mode = e1000_auto_x_mode_undefined;
|
|
|
3271 |
phy_info->local_rx = e1000_1000t_rx_status_undefined;
|
|
|
3272 |
phy_info->remote_rx = e1000_1000t_rx_status_undefined;
|
|
|
3273 |
|
|
|
3274 |
if (hw->media_type != e1000_media_type_copper) {
|
|
|
3275 |
e_dbg("PHY info is only valid for copper media\n");
|
|
|
3276 |
return -E1000_ERR_CONFIG;
|
|
|
3277 |
}
|
|
|
3278 |
|
|
|
3279 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
|
|
|
3280 |
if (ret_val)
|
|
|
3281 |
return ret_val;
|
|
|
3282 |
|
|
|
3283 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
|
|
|
3284 |
if (ret_val)
|
|
|
3285 |
return ret_val;
|
|
|
3286 |
|
|
|
3287 |
if ((phy_data & MII_SR_LINK_STATUS) != MII_SR_LINK_STATUS) {
|
|
|
3288 |
e_dbg("PHY info is only valid if link is up\n");
|
|
|
3289 |
return -E1000_ERR_CONFIG;
|
|
|
3290 |
}
|
|
|
3291 |
|
|
|
3292 |
if (hw->phy_type == e1000_phy_igp)
|
|
|
3293 |
return e1000_phy_igp_get_info(hw, phy_info);
|
|
|
3294 |
else
|
|
|
3295 |
return e1000_phy_m88_get_info(hw, phy_info);
|
|
|
3296 |
}
|
|
|
3297 |
|
|
|
3298 |
s32 e1000_validate_mdi_setting(struct e1000_hw *hw)
|
|
|
3299 |
{
|
|
|
3300 |
e_dbg("e1000_validate_mdi_settings");
|
|
|
3301 |
|
|
|
3302 |
if (!hw->autoneg && (hw->mdix == 0 || hw->mdix == 3)) {
|
|
|
3303 |
e_dbg("Invalid MDI setting detected\n");
|
|
|
3304 |
hw->mdix = 1;
|
|
|
3305 |
return -E1000_ERR_CONFIG;
|
|
|
3306 |
}
|
|
|
3307 |
return E1000_SUCCESS;
|
|
|
3308 |
}
|
|
|
3309 |
|
|
|
3310 |
/**
|
|
|
3311 |
* e1000_init_eeprom_params - initialize sw eeprom vars
|
|
|
3312 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3313 |
*
|
|
|
3314 |
* Sets up eeprom variables in the hw struct. Must be called after mac_type
|
|
|
3315 |
* is configured.
|
|
|
3316 |
*/
|
|
|
3317 |
s32 e1000_init_eeprom_params(struct e1000_hw *hw)
|
|
|
3318 |
{
|
|
|
3319 |
struct e1000_eeprom_info *eeprom = &hw->eeprom;
|
|
|
3320 |
u32 eecd = er32(EECD);
|
|
|
3321 |
s32 ret_val = E1000_SUCCESS;
|
|
|
3322 |
u16 eeprom_size;
|
|
|
3323 |
|
|
|
3324 |
e_dbg("e1000_init_eeprom_params");
|
|
|
3325 |
|
|
|
3326 |
switch (hw->mac_type) {
|
|
|
3327 |
case e1000_82542_rev2_0:
|
|
|
3328 |
case e1000_82542_rev2_1:
|
|
|
3329 |
case e1000_82543:
|
|
|
3330 |
case e1000_82544:
|
|
|
3331 |
eeprom->type = e1000_eeprom_microwire;
|
|
|
3332 |
eeprom->word_size = 64;
|
|
|
3333 |
eeprom->opcode_bits = 3;
|
|
|
3334 |
eeprom->address_bits = 6;
|
|
|
3335 |
eeprom->delay_usec = 50;
|
|
|
3336 |
break;
|
|
|
3337 |
case e1000_82540:
|
|
|
3338 |
case e1000_82545:
|
|
|
3339 |
case e1000_82545_rev_3:
|
|
|
3340 |
case e1000_82546:
|
|
|
3341 |
case e1000_82546_rev_3:
|
|
|
3342 |
eeprom->type = e1000_eeprom_microwire;
|
|
|
3343 |
eeprom->opcode_bits = 3;
|
|
|
3344 |
eeprom->delay_usec = 50;
|
|
|
3345 |
if (eecd & E1000_EECD_SIZE) {
|
|
|
3346 |
eeprom->word_size = 256;
|
|
|
3347 |
eeprom->address_bits = 8;
|
|
|
3348 |
} else {
|
|
|
3349 |
eeprom->word_size = 64;
|
|
|
3350 |
eeprom->address_bits = 6;
|
|
|
3351 |
}
|
|
|
3352 |
break;
|
|
|
3353 |
case e1000_82541:
|
|
|
3354 |
case e1000_82541_rev_2:
|
|
|
3355 |
case e1000_82547:
|
|
|
3356 |
case e1000_82547_rev_2:
|
|
|
3357 |
if (eecd & E1000_EECD_TYPE) {
|
|
|
3358 |
eeprom->type = e1000_eeprom_spi;
|
|
|
3359 |
eeprom->opcode_bits = 8;
|
|
|
3360 |
eeprom->delay_usec = 1;
|
|
|
3361 |
if (eecd & E1000_EECD_ADDR_BITS) {
|
|
|
3362 |
eeprom->page_size = 32;
|
|
|
3363 |
eeprom->address_bits = 16;
|
|
|
3364 |
} else {
|
|
|
3365 |
eeprom->page_size = 8;
|
|
|
3366 |
eeprom->address_bits = 8;
|
|
|
3367 |
}
|
|
|
3368 |
} else {
|
|
|
3369 |
eeprom->type = e1000_eeprom_microwire;
|
|
|
3370 |
eeprom->opcode_bits = 3;
|
|
|
3371 |
eeprom->delay_usec = 50;
|
|
|
3372 |
if (eecd & E1000_EECD_ADDR_BITS) {
|
|
|
3373 |
eeprom->word_size = 256;
|
|
|
3374 |
eeprom->address_bits = 8;
|
|
|
3375 |
} else {
|
|
|
3376 |
eeprom->word_size = 64;
|
|
|
3377 |
eeprom->address_bits = 6;
|
|
|
3378 |
}
|
|
|
3379 |
}
|
|
|
3380 |
break;
|
|
|
3381 |
default:
|
|
|
3382 |
break;
|
|
|
3383 |
}
|
|
|
3384 |
|
|
|
3385 |
if (eeprom->type == e1000_eeprom_spi) {
|
|
|
3386 |
/* eeprom_size will be an enum [0..8] that maps to eeprom sizes 128B to
|
|
|
3387 |
* 32KB (incremented by powers of 2).
|
|
|
3388 |
*/
|
|
|
3389 |
/* Set to default value for initial eeprom read. */
|
|
|
3390 |
eeprom->word_size = 64;
|
|
|
3391 |
ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1, &eeprom_size);
|
|
|
3392 |
if (ret_val)
|
|
|
3393 |
return ret_val;
|
|
|
3394 |
eeprom_size =
|
|
|
3395 |
(eeprom_size & EEPROM_SIZE_MASK) >> EEPROM_SIZE_SHIFT;
|
|
|
3396 |
/* 256B eeprom size was not supported in earlier hardware, so we
|
|
|
3397 |
* bump eeprom_size up one to ensure that "1" (which maps to 256B)
|
|
|
3398 |
* is never the result used in the shifting logic below. */
|
|
|
3399 |
if (eeprom_size)
|
|
|
3400 |
eeprom_size++;
|
|
|
3401 |
|
|
|
3402 |
eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT);
|
|
|
3403 |
}
|
|
|
3404 |
return ret_val;
|
|
|
3405 |
}
|
|
|
3406 |
|
|
|
3407 |
/**
|
|
|
3408 |
* e1000_raise_ee_clk - Raises the EEPROM's clock input.
|
|
|
3409 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3410 |
* @eecd: EECD's current value
|
|
|
3411 |
*/
|
|
|
3412 |
static void e1000_raise_ee_clk(struct e1000_hw *hw, u32 *eecd)
|
|
|
3413 |
{
|
|
|
3414 |
/* Raise the clock input to the EEPROM (by setting the SK bit), and then
|
|
|
3415 |
* wait <delay> microseconds.
|
|
|
3416 |
*/
|
|
|
3417 |
*eecd = *eecd | E1000_EECD_SK;
|
|
|
3418 |
ew32(EECD, *eecd);
|
|
|
3419 |
E1000_WRITE_FLUSH();
|
|
|
3420 |
udelay(hw->eeprom.delay_usec);
|
|
|
3421 |
}
|
|
|
3422 |
|
|
|
3423 |
/**
|
|
|
3424 |
* e1000_lower_ee_clk - Lowers the EEPROM's clock input.
|
|
|
3425 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3426 |
* @eecd: EECD's current value
|
|
|
3427 |
*/
|
|
|
3428 |
static void e1000_lower_ee_clk(struct e1000_hw *hw, u32 *eecd)
|
|
|
3429 |
{
|
|
|
3430 |
/* Lower the clock input to the EEPROM (by clearing the SK bit), and then
|
|
|
3431 |
* wait 50 microseconds.
|
|
|
3432 |
*/
|
|
|
3433 |
*eecd = *eecd & ~E1000_EECD_SK;
|
|
|
3434 |
ew32(EECD, *eecd);
|
|
|
3435 |
E1000_WRITE_FLUSH();
|
|
|
3436 |
udelay(hw->eeprom.delay_usec);
|
|
|
3437 |
}
|
|
|
3438 |
|
|
|
3439 |
/**
|
|
|
3440 |
* e1000_shift_out_ee_bits - Shift data bits out to the EEPROM.
|
|
|
3441 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3442 |
* @data: data to send to the EEPROM
|
|
|
3443 |
* @count: number of bits to shift out
|
|
|
3444 |
*/
|
|
|
3445 |
static void e1000_shift_out_ee_bits(struct e1000_hw *hw, u16 data, u16 count)
|
|
|
3446 |
{
|
|
|
3447 |
struct e1000_eeprom_info *eeprom = &hw->eeprom;
|
|
|
3448 |
u32 eecd;
|
|
|
3449 |
u32 mask;
|
|
|
3450 |
|
|
|
3451 |
/* We need to shift "count" bits out to the EEPROM. So, value in the
|
|
|
3452 |
* "data" parameter will be shifted out to the EEPROM one bit at a time.
|
|
|
3453 |
* In order to do this, "data" must be broken down into bits.
|
|
|
3454 |
*/
|
|
|
3455 |
mask = 0x01 << (count - 1);
|
|
|
3456 |
eecd = er32(EECD);
|
|
|
3457 |
if (eeprom->type == e1000_eeprom_microwire) {
|
|
|
3458 |
eecd &= ~E1000_EECD_DO;
|
|
|
3459 |
} else if (eeprom->type == e1000_eeprom_spi) {
|
|
|
3460 |
eecd |= E1000_EECD_DO;
|
|
|
3461 |
}
|
|
|
3462 |
do {
|
|
|
3463 |
/* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1",
|
|
|
3464 |
* and then raising and then lowering the clock (the SK bit controls
|
|
|
3465 |
* the clock input to the EEPROM). A "0" is shifted out to the EEPROM
|
|
|
3466 |
* by setting "DI" to "0" and then raising and then lowering the clock.
|
|
|
3467 |
*/
|
|
|
3468 |
eecd &= ~E1000_EECD_DI;
|
|
|
3469 |
|
|
|
3470 |
if (data & mask)
|
|
|
3471 |
eecd |= E1000_EECD_DI;
|
|
|
3472 |
|
|
|
3473 |
ew32(EECD, eecd);
|
|
|
3474 |
E1000_WRITE_FLUSH();
|
|
|
3475 |
|
|
|
3476 |
udelay(eeprom->delay_usec);
|
|
|
3477 |
|
|
|
3478 |
e1000_raise_ee_clk(hw, &eecd);
|
|
|
3479 |
e1000_lower_ee_clk(hw, &eecd);
|
|
|
3480 |
|
|
|
3481 |
mask = mask >> 1;
|
|
|
3482 |
|
|
|
3483 |
} while (mask);
|
|
|
3484 |
|
|
|
3485 |
/* We leave the "DI" bit set to "0" when we leave this routine. */
|
|
|
3486 |
eecd &= ~E1000_EECD_DI;
|
|
|
3487 |
ew32(EECD, eecd);
|
|
|
3488 |
}
|
|
|
3489 |
|
|
|
3490 |
/**
|
|
|
3491 |
* e1000_shift_in_ee_bits - Shift data bits in from the EEPROM
|
|
|
3492 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3493 |
* @count: number of bits to shift in
|
|
|
3494 |
*/
|
|
|
3495 |
static u16 e1000_shift_in_ee_bits(struct e1000_hw *hw, u16 count)
|
|
|
3496 |
{
|
|
|
3497 |
u32 eecd;
|
|
|
3498 |
u32 i;
|
|
|
3499 |
u16 data;
|
|
|
3500 |
|
|
|
3501 |
/* In order to read a register from the EEPROM, we need to shift 'count'
|
|
|
3502 |
* bits in from the EEPROM. Bits are "shifted in" by raising the clock
|
|
|
3503 |
* input to the EEPROM (setting the SK bit), and then reading the value of
|
|
|
3504 |
* the "DO" bit. During this "shifting in" process the "DI" bit should
|
|
|
3505 |
* always be clear.
|
|
|
3506 |
*/
|
|
|
3507 |
|
|
|
3508 |
eecd = er32(EECD);
|
|
|
3509 |
|
|
|
3510 |
eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
|
|
|
3511 |
data = 0;
|
|
|
3512 |
|
|
|
3513 |
for (i = 0; i < count; i++) {
|
|
|
3514 |
data = data << 1;
|
|
|
3515 |
e1000_raise_ee_clk(hw, &eecd);
|
|
|
3516 |
|
|
|
3517 |
eecd = er32(EECD);
|
|
|
3518 |
|
|
|
3519 |
eecd &= ~(E1000_EECD_DI);
|
|
|
3520 |
if (eecd & E1000_EECD_DO)
|
|
|
3521 |
data |= 1;
|
|
|
3522 |
|
|
|
3523 |
e1000_lower_ee_clk(hw, &eecd);
|
|
|
3524 |
}
|
|
|
3525 |
|
|
|
3526 |
return data;
|
|
|
3527 |
}
|
|
|
3528 |
|
|
|
3529 |
/**
|
|
|
3530 |
* e1000_acquire_eeprom - Prepares EEPROM for access
|
|
|
3531 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3532 |
*
|
|
|
3533 |
* Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This
|
|
|
3534 |
* function should be called before issuing a command to the EEPROM.
|
|
|
3535 |
*/
|
|
|
3536 |
static s32 e1000_acquire_eeprom(struct e1000_hw *hw)
|
|
|
3537 |
{
|
|
|
3538 |
struct e1000_eeprom_info *eeprom = &hw->eeprom;
|
|
|
3539 |
u32 eecd, i = 0;
|
|
|
3540 |
|
|
|
3541 |
e_dbg("e1000_acquire_eeprom");
|
|
|
3542 |
|
|
|
3543 |
eecd = er32(EECD);
|
|
|
3544 |
|
|
|
3545 |
/* Request EEPROM Access */
|
|
|
3546 |
if (hw->mac_type > e1000_82544) {
|
|
|
3547 |
eecd |= E1000_EECD_REQ;
|
|
|
3548 |
ew32(EECD, eecd);
|
|
|
3549 |
eecd = er32(EECD);
|
|
|
3550 |
while ((!(eecd & E1000_EECD_GNT)) &&
|
|
|
3551 |
(i < E1000_EEPROM_GRANT_ATTEMPTS)) {
|
|
|
3552 |
i++;
|
|
|
3553 |
udelay(5);
|
|
|
3554 |
eecd = er32(EECD);
|
|
|
3555 |
}
|
|
|
3556 |
if (!(eecd & E1000_EECD_GNT)) {
|
|
|
3557 |
eecd &= ~E1000_EECD_REQ;
|
|
|
3558 |
ew32(EECD, eecd);
|
|
|
3559 |
e_dbg("Could not acquire EEPROM grant\n");
|
|
|
3560 |
return -E1000_ERR_EEPROM;
|
|
|
3561 |
}
|
|
|
3562 |
}
|
|
|
3563 |
|
|
|
3564 |
/* Setup EEPROM for Read/Write */
|
|
|
3565 |
|
|
|
3566 |
if (eeprom->type == e1000_eeprom_microwire) {
|
|
|
3567 |
/* Clear SK and DI */
|
|
|
3568 |
eecd &= ~(E1000_EECD_DI | E1000_EECD_SK);
|
|
|
3569 |
ew32(EECD, eecd);
|
|
|
3570 |
|
|
|
3571 |
/* Set CS */
|
|
|
3572 |
eecd |= E1000_EECD_CS;
|
|
|
3573 |
ew32(EECD, eecd);
|
|
|
3574 |
} else if (eeprom->type == e1000_eeprom_spi) {
|
|
|
3575 |
/* Clear SK and CS */
|
|
|
3576 |
eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
|
|
|
3577 |
ew32(EECD, eecd);
|
|
|
3578 |
udelay(1);
|
|
|
3579 |
}
|
|
|
3580 |
|
|
|
3581 |
return E1000_SUCCESS;
|
|
|
3582 |
}
|
|
|
3583 |
|
|
|
3584 |
/**
|
|
|
3585 |
* e1000_standby_eeprom - Returns EEPROM to a "standby" state
|
|
|
3586 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3587 |
*/
|
|
|
3588 |
static void e1000_standby_eeprom(struct e1000_hw *hw)
|
|
|
3589 |
{
|
|
|
3590 |
struct e1000_eeprom_info *eeprom = &hw->eeprom;
|
|
|
3591 |
u32 eecd;
|
|
|
3592 |
|
|
|
3593 |
eecd = er32(EECD);
|
|
|
3594 |
|
|
|
3595 |
if (eeprom->type == e1000_eeprom_microwire) {
|
|
|
3596 |
eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
|
|
|
3597 |
ew32(EECD, eecd);
|
|
|
3598 |
E1000_WRITE_FLUSH();
|
|
|
3599 |
udelay(eeprom->delay_usec);
|
|
|
3600 |
|
|
|
3601 |
/* Clock high */
|
|
|
3602 |
eecd |= E1000_EECD_SK;
|
|
|
3603 |
ew32(EECD, eecd);
|
|
|
3604 |
E1000_WRITE_FLUSH();
|
|
|
3605 |
udelay(eeprom->delay_usec);
|
|
|
3606 |
|
|
|
3607 |
/* Select EEPROM */
|
|
|
3608 |
eecd |= E1000_EECD_CS;
|
|
|
3609 |
ew32(EECD, eecd);
|
|
|
3610 |
E1000_WRITE_FLUSH();
|
|
|
3611 |
udelay(eeprom->delay_usec);
|
|
|
3612 |
|
|
|
3613 |
/* Clock low */
|
|
|
3614 |
eecd &= ~E1000_EECD_SK;
|
|
|
3615 |
ew32(EECD, eecd);
|
|
|
3616 |
E1000_WRITE_FLUSH();
|
|
|
3617 |
udelay(eeprom->delay_usec);
|
|
|
3618 |
} else if (eeprom->type == e1000_eeprom_spi) {
|
|
|
3619 |
/* Toggle CS to flush commands */
|
|
|
3620 |
eecd |= E1000_EECD_CS;
|
|
|
3621 |
ew32(EECD, eecd);
|
|
|
3622 |
E1000_WRITE_FLUSH();
|
|
|
3623 |
udelay(eeprom->delay_usec);
|
|
|
3624 |
eecd &= ~E1000_EECD_CS;
|
|
|
3625 |
ew32(EECD, eecd);
|
|
|
3626 |
E1000_WRITE_FLUSH();
|
|
|
3627 |
udelay(eeprom->delay_usec);
|
|
|
3628 |
}
|
|
|
3629 |
}
|
|
|
3630 |
|
|
|
3631 |
/**
|
|
|
3632 |
* e1000_release_eeprom - drop chip select
|
|
|
3633 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3634 |
*
|
|
|
3635 |
* Terminates a command by inverting the EEPROM's chip select pin
|
|
|
3636 |
*/
|
|
|
3637 |
static void e1000_release_eeprom(struct e1000_hw *hw)
|
|
|
3638 |
{
|
|
|
3639 |
u32 eecd;
|
|
|
3640 |
|
|
|
3641 |
e_dbg("e1000_release_eeprom");
|
|
|
3642 |
|
|
|
3643 |
eecd = er32(EECD);
|
|
|
3644 |
|
|
|
3645 |
if (hw->eeprom.type == e1000_eeprom_spi) {
|
|
|
3646 |
eecd |= E1000_EECD_CS; /* Pull CS high */
|
|
|
3647 |
eecd &= ~E1000_EECD_SK; /* Lower SCK */
|
|
|
3648 |
|
|
|
3649 |
ew32(EECD, eecd);
|
|
|
3650 |
|
|
|
3651 |
udelay(hw->eeprom.delay_usec);
|
|
|
3652 |
} else if (hw->eeprom.type == e1000_eeprom_microwire) {
|
|
|
3653 |
/* cleanup eeprom */
|
|
|
3654 |
|
|
|
3655 |
/* CS on Microwire is active-high */
|
|
|
3656 |
eecd &= ~(E1000_EECD_CS | E1000_EECD_DI);
|
|
|
3657 |
|
|
|
3658 |
ew32(EECD, eecd);
|
|
|
3659 |
|
|
|
3660 |
/* Rising edge of clock */
|
|
|
3661 |
eecd |= E1000_EECD_SK;
|
|
|
3662 |
ew32(EECD, eecd);
|
|
|
3663 |
E1000_WRITE_FLUSH();
|
|
|
3664 |
udelay(hw->eeprom.delay_usec);
|
|
|
3665 |
|
|
|
3666 |
/* Falling edge of clock */
|
|
|
3667 |
eecd &= ~E1000_EECD_SK;
|
|
|
3668 |
ew32(EECD, eecd);
|
|
|
3669 |
E1000_WRITE_FLUSH();
|
|
|
3670 |
udelay(hw->eeprom.delay_usec);
|
|
|
3671 |
}
|
|
|
3672 |
|
|
|
3673 |
/* Stop requesting EEPROM access */
|
|
|
3674 |
if (hw->mac_type > e1000_82544) {
|
|
|
3675 |
eecd &= ~E1000_EECD_REQ;
|
|
|
3676 |
ew32(EECD, eecd);
|
|
|
3677 |
}
|
|
|
3678 |
}
|
|
|
3679 |
|
|
|
3680 |
/**
|
|
|
3681 |
* e1000_spi_eeprom_ready - Reads a 16 bit word from the EEPROM.
|
|
|
3682 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3683 |
*/
|
|
|
3684 |
static s32 e1000_spi_eeprom_ready(struct e1000_hw *hw)
|
|
|
3685 |
{
|
|
|
3686 |
u16 retry_count = 0;
|
|
|
3687 |
u8 spi_stat_reg;
|
|
|
3688 |
|
|
|
3689 |
e_dbg("e1000_spi_eeprom_ready");
|
|
|
3690 |
|
|
|
3691 |
/* Read "Status Register" repeatedly until the LSB is cleared. The
|
|
|
3692 |
* EEPROM will signal that the command has been completed by clearing
|
|
|
3693 |
* bit 0 of the internal status register. If it's not cleared within
|
|
|
3694 |
* 5 milliseconds, then error out.
|
|
|
3695 |
*/
|
|
|
3696 |
retry_count = 0;
|
|
|
3697 |
do {
|
|
|
3698 |
e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI,
|
|
|
3699 |
hw->eeprom.opcode_bits);
|
|
|
3700 |
spi_stat_reg = (u8) e1000_shift_in_ee_bits(hw, 8);
|
|
|
3701 |
if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI))
|
|
|
3702 |
break;
|
|
|
3703 |
|
|
|
3704 |
udelay(5);
|
|
|
3705 |
retry_count += 5;
|
|
|
3706 |
|
|
|
3707 |
e1000_standby_eeprom(hw);
|
|
|
3708 |
} while (retry_count < EEPROM_MAX_RETRY_SPI);
|
|
|
3709 |
|
|
|
3710 |
/* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and
|
|
|
3711 |
* only 0-5mSec on 5V devices)
|
|
|
3712 |
*/
|
|
|
3713 |
if (retry_count >= EEPROM_MAX_RETRY_SPI) {
|
|
|
3714 |
e_dbg("SPI EEPROM Status error\n");
|
|
|
3715 |
return -E1000_ERR_EEPROM;
|
|
|
3716 |
}
|
|
|
3717 |
|
|
|
3718 |
return E1000_SUCCESS;
|
|
|
3719 |
}
|
|
|
3720 |
|
|
|
3721 |
/**
|
|
|
3722 |
* e1000_read_eeprom - Reads a 16 bit word from the EEPROM.
|
|
|
3723 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3724 |
* @offset: offset of word in the EEPROM to read
|
|
|
3725 |
* @data: word read from the EEPROM
|
|
|
3726 |
* @words: number of words to read
|
|
|
3727 |
*/
|
|
|
3728 |
s32 e1000_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
|
|
|
3729 |
{
|
|
|
3730 |
s32 ret;
|
|
|
3731 |
spin_lock(&e1000_eeprom_lock);
|
|
|
3732 |
ret = e1000_do_read_eeprom(hw, offset, words, data);
|
|
|
3733 |
spin_unlock(&e1000_eeprom_lock);
|
|
|
3734 |
return ret;
|
|
|
3735 |
}
|
|
|
3736 |
|
|
|
3737 |
static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
|
|
|
3738 |
u16 *data)
|
|
|
3739 |
{
|
|
|
3740 |
struct e1000_eeprom_info *eeprom = &hw->eeprom;
|
|
|
3741 |
u32 i = 0;
|
|
|
3742 |
|
|
|
3743 |
e_dbg("e1000_read_eeprom");
|
|
|
3744 |
|
|
|
3745 |
/* If eeprom is not yet detected, do so now */
|
|
|
3746 |
if (eeprom->word_size == 0)
|
|
|
3747 |
e1000_init_eeprom_params(hw);
|
|
|
3748 |
|
|
|
3749 |
/* A check for invalid values: offset too large, too many words, and not
|
|
|
3750 |
* enough words.
|
|
|
3751 |
*/
|
|
|
3752 |
if ((offset >= eeprom->word_size)
|
|
|
3753 |
|| (words > eeprom->word_size - offset) || (words == 0)) {
|
|
|
3754 |
e_dbg("\"words\" parameter out of bounds. Words = %d,"
|
|
|
3755 |
"size = %d\n", offset, eeprom->word_size);
|
|
|
3756 |
return -E1000_ERR_EEPROM;
|
|
|
3757 |
}
|
|
|
3758 |
|
|
|
3759 |
/* EEPROM's that don't use EERD to read require us to bit-bang the SPI
|
|
|
3760 |
* directly. In this case, we need to acquire the EEPROM so that
|
|
|
3761 |
* FW or other port software does not interrupt.
|
|
|
3762 |
*/
|
|
|
3763 |
/* Prepare the EEPROM for bit-bang reading */
|
|
|
3764 |
if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
|
|
|
3765 |
return -E1000_ERR_EEPROM;
|
|
|
3766 |
|
|
|
3767 |
/* Set up the SPI or Microwire EEPROM for bit-bang reading. We have
|
|
|
3768 |
* acquired the EEPROM at this point, so any returns should release it */
|
|
|
3769 |
if (eeprom->type == e1000_eeprom_spi) {
|
|
|
3770 |
u16 word_in;
|
|
|
3771 |
u8 read_opcode = EEPROM_READ_OPCODE_SPI;
|
|
|
3772 |
|
|
|
3773 |
if (e1000_spi_eeprom_ready(hw)) {
|
|
|
3774 |
e1000_release_eeprom(hw);
|
|
|
3775 |
return -E1000_ERR_EEPROM;
|
|
|
3776 |
}
|
|
|
3777 |
|
|
|
3778 |
e1000_standby_eeprom(hw);
|
|
|
3779 |
|
|
|
3780 |
/* Some SPI eeproms use the 8th address bit embedded in the opcode */
|
|
|
3781 |
if ((eeprom->address_bits == 8) && (offset >= 128))
|
|
|
3782 |
read_opcode |= EEPROM_A8_OPCODE_SPI;
|
|
|
3783 |
|
|
|
3784 |
/* Send the READ command (opcode + addr) */
|
|
|
3785 |
e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits);
|
|
|
3786 |
e1000_shift_out_ee_bits(hw, (u16) (offset * 2),
|
|
|
3787 |
eeprom->address_bits);
|
|
|
3788 |
|
|
|
3789 |
/* Read the data. The address of the eeprom internally increments with
|
|
|
3790 |
* each byte (spi) being read, saving on the overhead of eeprom setup
|
|
|
3791 |
* and tear-down. The address counter will roll over if reading beyond
|
|
|
3792 |
* the size of the eeprom, thus allowing the entire memory to be read
|
|
|
3793 |
* starting from any offset. */
|
|
|
3794 |
for (i = 0; i < words; i++) {
|
|
|
3795 |
word_in = e1000_shift_in_ee_bits(hw, 16);
|
|
|
3796 |
data[i] = (word_in >> 8) | (word_in << 8);
|
|
|
3797 |
}
|
|
|
3798 |
} else if (eeprom->type == e1000_eeprom_microwire) {
|
|
|
3799 |
for (i = 0; i < words; i++) {
|
|
|
3800 |
/* Send the READ command (opcode + addr) */
|
|
|
3801 |
e1000_shift_out_ee_bits(hw,
|
|
|
3802 |
EEPROM_READ_OPCODE_MICROWIRE,
|
|
|
3803 |
eeprom->opcode_bits);
|
|
|
3804 |
e1000_shift_out_ee_bits(hw, (u16) (offset + i),
|
|
|
3805 |
eeprom->address_bits);
|
|
|
3806 |
|
|
|
3807 |
/* Read the data. For microwire, each word requires the overhead
|
|
|
3808 |
* of eeprom setup and tear-down. */
|
|
|
3809 |
data[i] = e1000_shift_in_ee_bits(hw, 16);
|
|
|
3810 |
e1000_standby_eeprom(hw);
|
|
|
3811 |
}
|
|
|
3812 |
}
|
|
|
3813 |
|
|
|
3814 |
/* End this read operation */
|
|
|
3815 |
e1000_release_eeprom(hw);
|
|
|
3816 |
|
|
|
3817 |
return E1000_SUCCESS;
|
|
|
3818 |
}
|
|
|
3819 |
|
|
|
3820 |
/**
|
|
|
3821 |
* e1000_validate_eeprom_checksum - Verifies that the EEPROM has a valid checksum
|
|
|
3822 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3823 |
*
|
|
|
3824 |
* Reads the first 64 16 bit words of the EEPROM and sums the values read.
|
|
|
3825 |
* If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is
|
|
|
3826 |
* valid.
|
|
|
3827 |
*/
|
|
|
3828 |
s32 e1000_validate_eeprom_checksum(struct e1000_hw *hw)
|
|
|
3829 |
{
|
|
|
3830 |
u16 checksum = 0;
|
|
|
3831 |
u16 i, eeprom_data;
|
|
|
3832 |
|
|
|
3833 |
e_dbg("e1000_validate_eeprom_checksum");
|
|
|
3834 |
|
|
|
3835 |
for (i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) {
|
|
|
3836 |
if (e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) {
|
|
|
3837 |
e_dbg("EEPROM Read Error\n");
|
|
|
3838 |
return -E1000_ERR_EEPROM;
|
|
|
3839 |
}
|
|
|
3840 |
checksum += eeprom_data;
|
|
|
3841 |
}
|
|
|
3842 |
|
|
|
3843 |
if (checksum == (u16) EEPROM_SUM)
|
|
|
3844 |
return E1000_SUCCESS;
|
|
|
3845 |
else {
|
|
|
3846 |
e_dbg("EEPROM Checksum Invalid\n");
|
|
|
3847 |
return -E1000_ERR_EEPROM;
|
|
|
3848 |
}
|
|
|
3849 |
}
|
|
|
3850 |
|
|
|
3851 |
/**
|
|
|
3852 |
* e1000_update_eeprom_checksum - Calculates/writes the EEPROM checksum
|
|
|
3853 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3854 |
*
|
|
|
3855 |
* Sums the first 63 16 bit words of the EEPROM. Subtracts the sum from 0xBABA.
|
|
|
3856 |
* Writes the difference to word offset 63 of the EEPROM.
|
|
|
3857 |
*/
|
|
|
3858 |
s32 e1000_update_eeprom_checksum(struct e1000_hw *hw)
|
|
|
3859 |
{
|
|
|
3860 |
u16 checksum = 0;
|
|
|
3861 |
u16 i, eeprom_data;
|
|
|
3862 |
|
|
|
3863 |
e_dbg("e1000_update_eeprom_checksum");
|
|
|
3864 |
|
|
|
3865 |
for (i = 0; i < EEPROM_CHECKSUM_REG; i++) {
|
|
|
3866 |
if (e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) {
|
|
|
3867 |
e_dbg("EEPROM Read Error\n");
|
|
|
3868 |
return -E1000_ERR_EEPROM;
|
|
|
3869 |
}
|
|
|
3870 |
checksum += eeprom_data;
|
|
|
3871 |
}
|
|
|
3872 |
checksum = (u16) EEPROM_SUM - checksum;
|
|
|
3873 |
if (e1000_write_eeprom(hw, EEPROM_CHECKSUM_REG, 1, &checksum) < 0) {
|
|
|
3874 |
e_dbg("EEPROM Write Error\n");
|
|
|
3875 |
return -E1000_ERR_EEPROM;
|
|
|
3876 |
}
|
|
|
3877 |
return E1000_SUCCESS;
|
|
|
3878 |
}
|
|
|
3879 |
|
|
|
3880 |
/**
|
|
|
3881 |
* e1000_write_eeprom - write words to the different EEPROM types.
|
|
|
3882 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3883 |
* @offset: offset within the EEPROM to be written to
|
|
|
3884 |
* @words: number of words to write
|
|
|
3885 |
* @data: 16 bit word to be written to the EEPROM
|
|
|
3886 |
*
|
|
|
3887 |
* If e1000_update_eeprom_checksum is not called after this function, the
|
|
|
3888 |
* EEPROM will most likely contain an invalid checksum.
|
|
|
3889 |
*/
|
|
|
3890 |
s32 e1000_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
|
|
|
3891 |
{
|
|
|
3892 |
s32 ret;
|
|
|
3893 |
spin_lock(&e1000_eeprom_lock);
|
|
|
3894 |
ret = e1000_do_write_eeprom(hw, offset, words, data);
|
|
|
3895 |
spin_unlock(&e1000_eeprom_lock);
|
|
|
3896 |
return ret;
|
|
|
3897 |
}
|
|
|
3898 |
|
|
|
3899 |
static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
|
|
|
3900 |
u16 *data)
|
|
|
3901 |
{
|
|
|
3902 |
struct e1000_eeprom_info *eeprom = &hw->eeprom;
|
|
|
3903 |
s32 status = 0;
|
|
|
3904 |
|
|
|
3905 |
e_dbg("e1000_write_eeprom");
|
|
|
3906 |
|
|
|
3907 |
/* If eeprom is not yet detected, do so now */
|
|
|
3908 |
if (eeprom->word_size == 0)
|
|
|
3909 |
e1000_init_eeprom_params(hw);
|
|
|
3910 |
|
|
|
3911 |
/* A check for invalid values: offset too large, too many words, and not
|
|
|
3912 |
* enough words.
|
|
|
3913 |
*/
|
|
|
3914 |
if ((offset >= eeprom->word_size)
|
|
|
3915 |
|| (words > eeprom->word_size - offset) || (words == 0)) {
|
|
|
3916 |
e_dbg("\"words\" parameter out of bounds\n");
|
|
|
3917 |
return -E1000_ERR_EEPROM;
|
|
|
3918 |
}
|
|
|
3919 |
|
|
|
3920 |
/* Prepare the EEPROM for writing */
|
|
|
3921 |
if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
|
|
|
3922 |
return -E1000_ERR_EEPROM;
|
|
|
3923 |
|
|
|
3924 |
if (eeprom->type == e1000_eeprom_microwire) {
|
|
|
3925 |
status = e1000_write_eeprom_microwire(hw, offset, words, data);
|
|
|
3926 |
} else {
|
|
|
3927 |
status = e1000_write_eeprom_spi(hw, offset, words, data);
|
|
|
3928 |
msleep(10);
|
|
|
3929 |
}
|
|
|
3930 |
|
|
|
3931 |
/* Done with writing */
|
|
|
3932 |
e1000_release_eeprom(hw);
|
|
|
3933 |
|
|
|
3934 |
return status;
|
|
|
3935 |
}
|
|
|
3936 |
|
|
|
3937 |
/**
|
|
|
3938 |
* e1000_write_eeprom_spi - Writes a 16 bit word to a given offset in an SPI EEPROM.
|
|
|
3939 |
* @hw: Struct containing variables accessed by shared code
|
|
|
3940 |
* @offset: offset within the EEPROM to be written to
|
|
|
3941 |
* @words: number of words to write
|
|
|
3942 |
* @data: pointer to array of 8 bit words to be written to the EEPROM
|
|
|
3943 |
*/
|
|
|
3944 |
static s32 e1000_write_eeprom_spi(struct e1000_hw *hw, u16 offset, u16 words,
|
|
|
3945 |
u16 *data)
|
|
|
3946 |
{
|
|
|
3947 |
struct e1000_eeprom_info *eeprom = &hw->eeprom;
|
|
|
3948 |
u16 widx = 0;
|
|
|
3949 |
|
|
|
3950 |
e_dbg("e1000_write_eeprom_spi");
|
|
|
3951 |
|
|
|
3952 |
while (widx < words) {
|
|
|
3953 |
u8 write_opcode = EEPROM_WRITE_OPCODE_SPI;
|
|
|
3954 |
|
|
|
3955 |
if (e1000_spi_eeprom_ready(hw))
|
|
|
3956 |
return -E1000_ERR_EEPROM;
|
|
|
3957 |
|
|
|
3958 |
e1000_standby_eeprom(hw);
|
|
|
3959 |
|
|
|
3960 |
/* Send the WRITE ENABLE command (8 bit opcode ) */
|
|
|
3961 |
e1000_shift_out_ee_bits(hw, EEPROM_WREN_OPCODE_SPI,
|
|
|
3962 |
eeprom->opcode_bits);
|
|
|
3963 |
|
|
|
3964 |
e1000_standby_eeprom(hw);
|
|
|
3965 |
|
|
|
3966 |
/* Some SPI eeproms use the 8th address bit embedded in the opcode */
|
|
|
3967 |
if ((eeprom->address_bits == 8) && (offset >= 128))
|
|
|
3968 |
write_opcode |= EEPROM_A8_OPCODE_SPI;
|
|
|
3969 |
|
|
|
3970 |
/* Send the Write command (8-bit opcode + addr) */
|
|
|
3971 |
e1000_shift_out_ee_bits(hw, write_opcode, eeprom->opcode_bits);
|
|
|
3972 |
|
|
|
3973 |
e1000_shift_out_ee_bits(hw, (u16) ((offset + widx) * 2),
|
|
|
3974 |
eeprom->address_bits);
|
|
|
3975 |
|
|
|
3976 |
/* Send the data */
|
|
|
3977 |
|
|
|
3978 |
/* Loop to allow for up to whole page write (32 bytes) of eeprom */
|
|
|
3979 |
while (widx < words) {
|
|
|
3980 |
u16 word_out = data[widx];
|
|
|
3981 |
word_out = (word_out >> 8) | (word_out << 8);
|
|
|
3982 |
e1000_shift_out_ee_bits(hw, word_out, 16);
|
|
|
3983 |
widx++;
|
|
|
3984 |
|
|
|
3985 |
/* Some larger eeprom sizes are capable of a 32-byte PAGE WRITE
|
|
|
3986 |
* operation, while the smaller eeproms are capable of an 8-byte
|
|
|
3987 |
* PAGE WRITE operation. Break the inner loop to pass new address
|
|
|
3988 |
*/
|
|
|
3989 |
if ((((offset + widx) * 2) % eeprom->page_size) == 0) {
|
|
|
3990 |
e1000_standby_eeprom(hw);
|
|
|
3991 |
break;
|
|
|
3992 |
}
|
|
|
3993 |
}
|
|
|
3994 |
}
|
|
|
3995 |
|
|
|
3996 |
return E1000_SUCCESS;
|
|
|
3997 |
}
|
|
|
3998 |
|
|
|
3999 |
/**
|
|
|
4000 |
* e1000_write_eeprom_microwire - Writes a 16 bit word to a given offset in a Microwire EEPROM.
|
|
|
4001 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4002 |
* @offset: offset within the EEPROM to be written to
|
|
|
4003 |
* @words: number of words to write
|
|
|
4004 |
* @data: pointer to array of 8 bit words to be written to the EEPROM
|
|
|
4005 |
*/
|
|
|
4006 |
static s32 e1000_write_eeprom_microwire(struct e1000_hw *hw, u16 offset,
|
|
|
4007 |
u16 words, u16 *data)
|
|
|
4008 |
{
|
|
|
4009 |
struct e1000_eeprom_info *eeprom = &hw->eeprom;
|
|
|
4010 |
u32 eecd;
|
|
|
4011 |
u16 words_written = 0;
|
|
|
4012 |
u16 i = 0;
|
|
|
4013 |
|
|
|
4014 |
e_dbg("e1000_write_eeprom_microwire");
|
|
|
4015 |
|
|
|
4016 |
/* Send the write enable command to the EEPROM (3-bit opcode plus
|
|
|
4017 |
* 6/8-bit dummy address beginning with 11). It's less work to include
|
|
|
4018 |
* the 11 of the dummy address as part of the opcode than it is to shift
|
|
|
4019 |
* it over the correct number of bits for the address. This puts the
|
|
|
4020 |
* EEPROM into write/erase mode.
|
|
|
4021 |
*/
|
|
|
4022 |
e1000_shift_out_ee_bits(hw, EEPROM_EWEN_OPCODE_MICROWIRE,
|
|
|
4023 |
(u16) (eeprom->opcode_bits + 2));
|
|
|
4024 |
|
|
|
4025 |
e1000_shift_out_ee_bits(hw, 0, (u16) (eeprom->address_bits - 2));
|
|
|
4026 |
|
|
|
4027 |
/* Prepare the EEPROM */
|
|
|
4028 |
e1000_standby_eeprom(hw);
|
|
|
4029 |
|
|
|
4030 |
while (words_written < words) {
|
|
|
4031 |
/* Send the Write command (3-bit opcode + addr) */
|
|
|
4032 |
e1000_shift_out_ee_bits(hw, EEPROM_WRITE_OPCODE_MICROWIRE,
|
|
|
4033 |
eeprom->opcode_bits);
|
|
|
4034 |
|
|
|
4035 |
e1000_shift_out_ee_bits(hw, (u16) (offset + words_written),
|
|
|
4036 |
eeprom->address_bits);
|
|
|
4037 |
|
|
|
4038 |
/* Send the data */
|
|
|
4039 |
e1000_shift_out_ee_bits(hw, data[words_written], 16);
|
|
|
4040 |
|
|
|
4041 |
/* Toggle the CS line. This in effect tells the EEPROM to execute
|
|
|
4042 |
* the previous command.
|
|
|
4043 |
*/
|
|
|
4044 |
e1000_standby_eeprom(hw);
|
|
|
4045 |
|
|
|
4046 |
/* Read DO repeatedly until it is high (equal to '1'). The EEPROM will
|
|
|
4047 |
* signal that the command has been completed by raising the DO signal.
|
|
|
4048 |
* If DO does not go high in 10 milliseconds, then error out.
|
|
|
4049 |
*/
|
|
|
4050 |
for (i = 0; i < 200; i++) {
|
|
|
4051 |
eecd = er32(EECD);
|
|
|
4052 |
if (eecd & E1000_EECD_DO)
|
|
|
4053 |
break;
|
|
|
4054 |
udelay(50);
|
|
|
4055 |
}
|
|
|
4056 |
if (i == 200) {
|
|
|
4057 |
e_dbg("EEPROM Write did not complete\n");
|
|
|
4058 |
return -E1000_ERR_EEPROM;
|
|
|
4059 |
}
|
|
|
4060 |
|
|
|
4061 |
/* Recover from write */
|
|
|
4062 |
e1000_standby_eeprom(hw);
|
|
|
4063 |
|
|
|
4064 |
words_written++;
|
|
|
4065 |
}
|
|
|
4066 |
|
|
|
4067 |
/* Send the write disable command to the EEPROM (3-bit opcode plus
|
|
|
4068 |
* 6/8-bit dummy address beginning with 10). It's less work to include
|
|
|
4069 |
* the 10 of the dummy address as part of the opcode than it is to shift
|
|
|
4070 |
* it over the correct number of bits for the address. This takes the
|
|
|
4071 |
* EEPROM out of write/erase mode.
|
|
|
4072 |
*/
|
|
|
4073 |
e1000_shift_out_ee_bits(hw, EEPROM_EWDS_OPCODE_MICROWIRE,
|
|
|
4074 |
(u16) (eeprom->opcode_bits + 2));
|
|
|
4075 |
|
|
|
4076 |
e1000_shift_out_ee_bits(hw, 0, (u16) (eeprom->address_bits - 2));
|
|
|
4077 |
|
|
|
4078 |
return E1000_SUCCESS;
|
|
|
4079 |
}
|
|
|
4080 |
|
|
|
4081 |
/**
|
|
|
4082 |
* e1000_read_mac_addr - read the adapters MAC from eeprom
|
|
|
4083 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4084 |
*
|
|
|
4085 |
* Reads the adapter's MAC address from the EEPROM and inverts the LSB for the
|
|
|
4086 |
* second function of dual function devices
|
|
|
4087 |
*/
|
|
|
4088 |
s32 e1000_read_mac_addr(struct e1000_hw *hw)
|
|
|
4089 |
{
|
|
|
4090 |
u16 offset;
|
|
|
4091 |
u16 eeprom_data, i;
|
|
|
4092 |
|
|
|
4093 |
e_dbg("e1000_read_mac_addr");
|
|
|
4094 |
|
|
|
4095 |
for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
|
|
|
4096 |
offset = i >> 1;
|
|
|
4097 |
if (e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
|
|
|
4098 |
e_dbg("EEPROM Read Error\n");
|
|
|
4099 |
return -E1000_ERR_EEPROM;
|
|
|
4100 |
}
|
|
|
4101 |
hw->perm_mac_addr[i] = (u8) (eeprom_data & 0x00FF);
|
|
|
4102 |
hw->perm_mac_addr[i + 1] = (u8) (eeprom_data >> 8);
|
|
|
4103 |
}
|
|
|
4104 |
|
|
|
4105 |
switch (hw->mac_type) {
|
|
|
4106 |
default:
|
|
|
4107 |
break;
|
|
|
4108 |
case e1000_82546:
|
|
|
4109 |
case e1000_82546_rev_3:
|
|
|
4110 |
if (er32(STATUS) & E1000_STATUS_FUNC_1)
|
|
|
4111 |
hw->perm_mac_addr[5] ^= 0x01;
|
|
|
4112 |
break;
|
|
|
4113 |
}
|
|
|
4114 |
|
|
|
4115 |
for (i = 0; i < NODE_ADDRESS_SIZE; i++)
|
|
|
4116 |
hw->mac_addr[i] = hw->perm_mac_addr[i];
|
|
|
4117 |
return E1000_SUCCESS;
|
|
|
4118 |
}
|
|
|
4119 |
|
|
|
4120 |
/**
|
|
|
4121 |
* e1000_init_rx_addrs - Initializes receive address filters.
|
|
|
4122 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4123 |
*
|
|
|
4124 |
* Places the MAC address in receive address register 0 and clears the rest
|
|
|
4125 |
* of the receive address registers. Clears the multicast table. Assumes
|
|
|
4126 |
* the receiver is in reset when the routine is called.
|
|
|
4127 |
*/
|
|
|
4128 |
static void e1000_init_rx_addrs(struct e1000_hw *hw)
|
|
|
4129 |
{
|
|
|
4130 |
u32 i;
|
|
|
4131 |
u32 rar_num;
|
|
|
4132 |
|
|
|
4133 |
e_dbg("e1000_init_rx_addrs");
|
|
|
4134 |
|
|
|
4135 |
/* Setup the receive address. */
|
|
|
4136 |
e_dbg("Programming MAC Address into RAR[0]\n");
|
|
|
4137 |
|
|
|
4138 |
e1000_rar_set(hw, hw->mac_addr, 0);
|
|
|
4139 |
|
|
|
4140 |
rar_num = E1000_RAR_ENTRIES;
|
|
|
4141 |
|
|
|
4142 |
/* Zero out the other 15 receive addresses. */
|
|
|
4143 |
e_dbg("Clearing RAR[1-15]\n");
|
|
|
4144 |
for (i = 1; i < rar_num; i++) {
|
|
|
4145 |
E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
|
|
|
4146 |
E1000_WRITE_FLUSH();
|
|
|
4147 |
E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
|
|
|
4148 |
E1000_WRITE_FLUSH();
|
|
|
4149 |
}
|
|
|
4150 |
}
|
|
|
4151 |
|
|
|
4152 |
/**
|
|
|
4153 |
* e1000_hash_mc_addr - Hashes an address to determine its location in the multicast table
|
|
|
4154 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4155 |
* @mc_addr: the multicast address to hash
|
|
|
4156 |
*/
|
|
|
4157 |
u32 e1000_hash_mc_addr(struct e1000_hw *hw, u8 *mc_addr)
|
|
|
4158 |
{
|
|
|
4159 |
u32 hash_value = 0;
|
|
|
4160 |
|
|
|
4161 |
/* The portion of the address that is used for the hash table is
|
|
|
4162 |
* determined by the mc_filter_type setting.
|
|
|
4163 |
*/
|
|
|
4164 |
switch (hw->mc_filter_type) {
|
|
|
4165 |
/* [0] [1] [2] [3] [4] [5]
|
|
|
4166 |
* 01 AA 00 12 34 56
|
|
|
4167 |
* LSB MSB
|
|
|
4168 |
*/
|
|
|
4169 |
case 0:
|
|
|
4170 |
/* [47:36] i.e. 0x563 for above example address */
|
|
|
4171 |
hash_value = ((mc_addr[4] >> 4) | (((u16) mc_addr[5]) << 4));
|
|
|
4172 |
break;
|
|
|
4173 |
case 1:
|
|
|
4174 |
/* [46:35] i.e. 0xAC6 for above example address */
|
|
|
4175 |
hash_value = ((mc_addr[4] >> 3) | (((u16) mc_addr[5]) << 5));
|
|
|
4176 |
break;
|
|
|
4177 |
case 2:
|
|
|
4178 |
/* [45:34] i.e. 0x5D8 for above example address */
|
|
|
4179 |
hash_value = ((mc_addr[4] >> 2) | (((u16) mc_addr[5]) << 6));
|
|
|
4180 |
break;
|
|
|
4181 |
case 3:
|
|
|
4182 |
/* [43:32] i.e. 0x634 for above example address */
|
|
|
4183 |
hash_value = ((mc_addr[4]) | (((u16) mc_addr[5]) << 8));
|
|
|
4184 |
break;
|
|
|
4185 |
}
|
|
|
4186 |
|
|
|
4187 |
hash_value &= 0xFFF;
|
|
|
4188 |
return hash_value;
|
|
|
4189 |
}
|
|
|
4190 |
|
|
|
4191 |
/**
|
|
|
4192 |
* e1000_rar_set - Puts an ethernet address into a receive address register.
|
|
|
4193 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4194 |
* @addr: Address to put into receive address register
|
|
|
4195 |
* @index: Receive address register to write
|
|
|
4196 |
*/
|
|
|
4197 |
void e1000_rar_set(struct e1000_hw *hw, u8 *addr, u32 index)
|
|
|
4198 |
{
|
|
|
4199 |
u32 rar_low, rar_high;
|
|
|
4200 |
|
|
|
4201 |
/* HW expects these in little endian so we reverse the byte order
|
|
|
4202 |
* from network order (big endian) to little endian
|
|
|
4203 |
*/
|
|
|
4204 |
rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
|
|
|
4205 |
((u32) addr[2] << 16) | ((u32) addr[3] << 24));
|
|
|
4206 |
rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
|
|
|
4207 |
|
|
|
4208 |
/* Disable Rx and flush all Rx frames before enabling RSS to avoid Rx
|
|
|
4209 |
* unit hang.
|
|
|
4210 |
*
|
|
|
4211 |
* Description:
|
|
|
4212 |
* If there are any Rx frames queued up or otherwise present in the HW
|
|
|
4213 |
* before RSS is enabled, and then we enable RSS, the HW Rx unit will
|
|
|
4214 |
* hang. To work around this issue, we have to disable receives and
|
|
|
4215 |
* flush out all Rx frames before we enable RSS. To do so, we modify we
|
|
|
4216 |
* redirect all Rx traffic to manageability and then reset the HW.
|
|
|
4217 |
* This flushes away Rx frames, and (since the redirections to
|
|
|
4218 |
* manageability persists across resets) keeps new ones from coming in
|
|
|
4219 |
* while we work. Then, we clear the Address Valid AV bit for all MAC
|
|
|
4220 |
* addresses and undo the re-direction to manageability.
|
|
|
4221 |
* Now, frames are coming in again, but the MAC won't accept them, so
|
|
|
4222 |
* far so good. We now proceed to initialize RSS (if necessary) and
|
|
|
4223 |
* configure the Rx unit. Last, we re-enable the AV bits and continue
|
|
|
4224 |
* on our merry way.
|
|
|
4225 |
*/
|
|
|
4226 |
switch (hw->mac_type) {
|
|
|
4227 |
default:
|
|
|
4228 |
/* Indicate to hardware the Address is Valid. */
|
|
|
4229 |
rar_high |= E1000_RAH_AV;
|
|
|
4230 |
break;
|
|
|
4231 |
}
|
|
|
4232 |
|
|
|
4233 |
E1000_WRITE_REG_ARRAY(hw, RA, (index << 1), rar_low);
|
|
|
4234 |
E1000_WRITE_FLUSH();
|
|
|
4235 |
E1000_WRITE_REG_ARRAY(hw, RA, ((index << 1) + 1), rar_high);
|
|
|
4236 |
E1000_WRITE_FLUSH();
|
|
|
4237 |
}
|
|
|
4238 |
|
|
|
4239 |
/**
|
|
|
4240 |
* e1000_write_vfta - Writes a value to the specified offset in the VLAN filter table.
|
|
|
4241 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4242 |
* @offset: Offset in VLAN filer table to write
|
|
|
4243 |
* @value: Value to write into VLAN filter table
|
|
|
4244 |
*/
|
|
|
4245 |
void e1000_write_vfta(struct e1000_hw *hw, u32 offset, u32 value)
|
|
|
4246 |
{
|
|
|
4247 |
u32 temp;
|
|
|
4248 |
|
|
|
4249 |
if ((hw->mac_type == e1000_82544) && ((offset & 0x1) == 1)) {
|
|
|
4250 |
temp = E1000_READ_REG_ARRAY(hw, VFTA, (offset - 1));
|
|
|
4251 |
E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value);
|
|
|
4252 |
E1000_WRITE_FLUSH();
|
|
|
4253 |
E1000_WRITE_REG_ARRAY(hw, VFTA, (offset - 1), temp);
|
|
|
4254 |
E1000_WRITE_FLUSH();
|
|
|
4255 |
} else {
|
|
|
4256 |
E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value);
|
|
|
4257 |
E1000_WRITE_FLUSH();
|
|
|
4258 |
}
|
|
|
4259 |
}
|
|
|
4260 |
|
|
|
4261 |
/**
|
|
|
4262 |
* e1000_clear_vfta - Clears the VLAN filer table
|
|
|
4263 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4264 |
*/
|
|
|
4265 |
static void e1000_clear_vfta(struct e1000_hw *hw)
|
|
|
4266 |
{
|
|
|
4267 |
u32 offset;
|
|
|
4268 |
u32 vfta_value = 0;
|
|
|
4269 |
u32 vfta_offset = 0;
|
|
|
4270 |
u32 vfta_bit_in_reg = 0;
|
|
|
4271 |
|
|
|
4272 |
for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) {
|
|
|
4273 |
/* If the offset we want to clear is the same offset of the
|
|
|
4274 |
* manageability VLAN ID, then clear all bits except that of the
|
|
|
4275 |
* manageability unit */
|
|
|
4276 |
vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0;
|
|
|
4277 |
E1000_WRITE_REG_ARRAY(hw, VFTA, offset, vfta_value);
|
|
|
4278 |
E1000_WRITE_FLUSH();
|
|
|
4279 |
}
|
|
|
4280 |
}
|
|
|
4281 |
|
|
|
4282 |
static s32 e1000_id_led_init(struct e1000_hw *hw)
|
|
|
4283 |
{
|
|
|
4284 |
u32 ledctl;
|
|
|
4285 |
const u32 ledctl_mask = 0x000000FF;
|
|
|
4286 |
const u32 ledctl_on = E1000_LEDCTL_MODE_LED_ON;
|
|
|
4287 |
const u32 ledctl_off = E1000_LEDCTL_MODE_LED_OFF;
|
|
|
4288 |
u16 eeprom_data, i, temp;
|
|
|
4289 |
const u16 led_mask = 0x0F;
|
|
|
4290 |
|
|
|
4291 |
e_dbg("e1000_id_led_init");
|
|
|
4292 |
|
|
|
4293 |
if (hw->mac_type < e1000_82540) {
|
|
|
4294 |
/* Nothing to do */
|
|
|
4295 |
return E1000_SUCCESS;
|
|
|
4296 |
}
|
|
|
4297 |
|
|
|
4298 |
ledctl = er32(LEDCTL);
|
|
|
4299 |
hw->ledctl_default = ledctl;
|
|
|
4300 |
hw->ledctl_mode1 = hw->ledctl_default;
|
|
|
4301 |
hw->ledctl_mode2 = hw->ledctl_default;
|
|
|
4302 |
|
|
|
4303 |
if (e1000_read_eeprom(hw, EEPROM_ID_LED_SETTINGS, 1, &eeprom_data) < 0) {
|
|
|
4304 |
e_dbg("EEPROM Read Error\n");
|
|
|
4305 |
return -E1000_ERR_EEPROM;
|
|
|
4306 |
}
|
|
|
4307 |
|
|
|
4308 |
if ((eeprom_data == ID_LED_RESERVED_0000) ||
|
|
|
4309 |
(eeprom_data == ID_LED_RESERVED_FFFF)) {
|
|
|
4310 |
eeprom_data = ID_LED_DEFAULT;
|
|
|
4311 |
}
|
|
|
4312 |
|
|
|
4313 |
for (i = 0; i < 4; i++) {
|
|
|
4314 |
temp = (eeprom_data >> (i << 2)) & led_mask;
|
|
|
4315 |
switch (temp) {
|
|
|
4316 |
case ID_LED_ON1_DEF2:
|
|
|
4317 |
case ID_LED_ON1_ON2:
|
|
|
4318 |
case ID_LED_ON1_OFF2:
|
|
|
4319 |
hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
|
|
|
4320 |
hw->ledctl_mode1 |= ledctl_on << (i << 3);
|
|
|
4321 |
break;
|
|
|
4322 |
case ID_LED_OFF1_DEF2:
|
|
|
4323 |
case ID_LED_OFF1_ON2:
|
|
|
4324 |
case ID_LED_OFF1_OFF2:
|
|
|
4325 |
hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
|
|
|
4326 |
hw->ledctl_mode1 |= ledctl_off << (i << 3);
|
|
|
4327 |
break;
|
|
|
4328 |
default:
|
|
|
4329 |
/* Do nothing */
|
|
|
4330 |
break;
|
|
|
4331 |
}
|
|
|
4332 |
switch (temp) {
|
|
|
4333 |
case ID_LED_DEF1_ON2:
|
|
|
4334 |
case ID_LED_ON1_ON2:
|
|
|
4335 |
case ID_LED_OFF1_ON2:
|
|
|
4336 |
hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
|
|
|
4337 |
hw->ledctl_mode2 |= ledctl_on << (i << 3);
|
|
|
4338 |
break;
|
|
|
4339 |
case ID_LED_DEF1_OFF2:
|
|
|
4340 |
case ID_LED_ON1_OFF2:
|
|
|
4341 |
case ID_LED_OFF1_OFF2:
|
|
|
4342 |
hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
|
|
|
4343 |
hw->ledctl_mode2 |= ledctl_off << (i << 3);
|
|
|
4344 |
break;
|
|
|
4345 |
default:
|
|
|
4346 |
/* Do nothing */
|
|
|
4347 |
break;
|
|
|
4348 |
}
|
|
|
4349 |
}
|
|
|
4350 |
return E1000_SUCCESS;
|
|
|
4351 |
}
|
|
|
4352 |
|
|
|
4353 |
/**
|
|
|
4354 |
* e1000_setup_led
|
|
|
4355 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4356 |
*
|
|
|
4357 |
* Prepares SW controlable LED for use and saves the current state of the LED.
|
|
|
4358 |
*/
|
|
|
4359 |
s32 e1000_setup_led(struct e1000_hw *hw)
|
|
|
4360 |
{
|
|
|
4361 |
u32 ledctl;
|
|
|
4362 |
s32 ret_val = E1000_SUCCESS;
|
|
|
4363 |
|
|
|
4364 |
e_dbg("e1000_setup_led");
|
|
|
4365 |
|
|
|
4366 |
switch (hw->mac_type) {
|
|
|
4367 |
case e1000_82542_rev2_0:
|
|
|
4368 |
case e1000_82542_rev2_1:
|
|
|
4369 |
case e1000_82543:
|
|
|
4370 |
case e1000_82544:
|
|
|
4371 |
/* No setup necessary */
|
|
|
4372 |
break;
|
|
|
4373 |
case e1000_82541:
|
|
|
4374 |
case e1000_82547:
|
|
|
4375 |
case e1000_82541_rev_2:
|
|
|
4376 |
case e1000_82547_rev_2:
|
|
|
4377 |
/* Turn off PHY Smart Power Down (if enabled) */
|
|
|
4378 |
ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO,
|
|
|
4379 |
&hw->phy_spd_default);
|
|
|
4380 |
if (ret_val)
|
|
|
4381 |
return ret_val;
|
|
|
4382 |
ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
|
|
|
4383 |
(u16) (hw->phy_spd_default &
|
|
|
4384 |
~IGP01E1000_GMII_SPD));
|
|
|
4385 |
if (ret_val)
|
|
|
4386 |
return ret_val;
|
|
|
4387 |
/* Fall Through */
|
|
|
4388 |
default:
|
|
|
4389 |
if (hw->media_type == e1000_media_type_fiber) {
|
|
|
4390 |
ledctl = er32(LEDCTL);
|
|
|
4391 |
/* Save current LEDCTL settings */
|
|
|
4392 |
hw->ledctl_default = ledctl;
|
|
|
4393 |
/* Turn off LED0 */
|
|
|
4394 |
ledctl &= ~(E1000_LEDCTL_LED0_IVRT |
|
|
|
4395 |
E1000_LEDCTL_LED0_BLINK |
|
|
|
4396 |
E1000_LEDCTL_LED0_MODE_MASK);
|
|
|
4397 |
ledctl |= (E1000_LEDCTL_MODE_LED_OFF <<
|
|
|
4398 |
E1000_LEDCTL_LED0_MODE_SHIFT);
|
|
|
4399 |
ew32(LEDCTL, ledctl);
|
|
|
4400 |
} else if (hw->media_type == e1000_media_type_copper)
|
|
|
4401 |
ew32(LEDCTL, hw->ledctl_mode1);
|
|
|
4402 |
break;
|
|
|
4403 |
}
|
|
|
4404 |
|
|
|
4405 |
return E1000_SUCCESS;
|
|
|
4406 |
}
|
|
|
4407 |
|
|
|
4408 |
/**
|
|
|
4409 |
* e1000_cleanup_led - Restores the saved state of the SW controlable LED.
|
|
|
4410 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4411 |
*/
|
|
|
4412 |
s32 e1000_cleanup_led(struct e1000_hw *hw)
|
|
|
4413 |
{
|
|
|
4414 |
s32 ret_val = E1000_SUCCESS;
|
|
|
4415 |
|
|
|
4416 |
e_dbg("e1000_cleanup_led");
|
|
|
4417 |
|
|
|
4418 |
switch (hw->mac_type) {
|
|
|
4419 |
case e1000_82542_rev2_0:
|
|
|
4420 |
case e1000_82542_rev2_1:
|
|
|
4421 |
case e1000_82543:
|
|
|
4422 |
case e1000_82544:
|
|
|
4423 |
/* No cleanup necessary */
|
|
|
4424 |
break;
|
|
|
4425 |
case e1000_82541:
|
|
|
4426 |
case e1000_82547:
|
|
|
4427 |
case e1000_82541_rev_2:
|
|
|
4428 |
case e1000_82547_rev_2:
|
|
|
4429 |
/* Turn on PHY Smart Power Down (if previously enabled) */
|
|
|
4430 |
ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
|
|
|
4431 |
hw->phy_spd_default);
|
|
|
4432 |
if (ret_val)
|
|
|
4433 |
return ret_val;
|
|
|
4434 |
/* Fall Through */
|
|
|
4435 |
default:
|
|
|
4436 |
/* Restore LEDCTL settings */
|
|
|
4437 |
ew32(LEDCTL, hw->ledctl_default);
|
|
|
4438 |
break;
|
|
|
4439 |
}
|
|
|
4440 |
|
|
|
4441 |
return E1000_SUCCESS;
|
|
|
4442 |
}
|
|
|
4443 |
|
|
|
4444 |
/**
|
|
|
4445 |
* e1000_led_on - Turns on the software controllable LED
|
|
|
4446 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4447 |
*/
|
|
|
4448 |
s32 e1000_led_on(struct e1000_hw *hw)
|
|
|
4449 |
{
|
|
|
4450 |
u32 ctrl = er32(CTRL);
|
|
|
4451 |
|
|
|
4452 |
e_dbg("e1000_led_on");
|
|
|
4453 |
|
|
|
4454 |
switch (hw->mac_type) {
|
|
|
4455 |
case e1000_82542_rev2_0:
|
|
|
4456 |
case e1000_82542_rev2_1:
|
|
|
4457 |
case e1000_82543:
|
|
|
4458 |
/* Set SW Defineable Pin 0 to turn on the LED */
|
|
|
4459 |
ctrl |= E1000_CTRL_SWDPIN0;
|
|
|
4460 |
ctrl |= E1000_CTRL_SWDPIO0;
|
|
|
4461 |
break;
|
|
|
4462 |
case e1000_82544:
|
|
|
4463 |
if (hw->media_type == e1000_media_type_fiber) {
|
|
|
4464 |
/* Set SW Defineable Pin 0 to turn on the LED */
|
|
|
4465 |
ctrl |= E1000_CTRL_SWDPIN0;
|
|
|
4466 |
ctrl |= E1000_CTRL_SWDPIO0;
|
|
|
4467 |
} else {
|
|
|
4468 |
/* Clear SW Defineable Pin 0 to turn on the LED */
|
|
|
4469 |
ctrl &= ~E1000_CTRL_SWDPIN0;
|
|
|
4470 |
ctrl |= E1000_CTRL_SWDPIO0;
|
|
|
4471 |
}
|
|
|
4472 |
break;
|
|
|
4473 |
default:
|
|
|
4474 |
if (hw->media_type == e1000_media_type_fiber) {
|
|
|
4475 |
/* Clear SW Defineable Pin 0 to turn on the LED */
|
|
|
4476 |
ctrl &= ~E1000_CTRL_SWDPIN0;
|
|
|
4477 |
ctrl |= E1000_CTRL_SWDPIO0;
|
|
|
4478 |
} else if (hw->media_type == e1000_media_type_copper) {
|
|
|
4479 |
ew32(LEDCTL, hw->ledctl_mode2);
|
|
|
4480 |
return E1000_SUCCESS;
|
|
|
4481 |
}
|
|
|
4482 |
break;
|
|
|
4483 |
}
|
|
|
4484 |
|
|
|
4485 |
ew32(CTRL, ctrl);
|
|
|
4486 |
|
|
|
4487 |
return E1000_SUCCESS;
|
|
|
4488 |
}
|
|
|
4489 |
|
|
|
4490 |
/**
|
|
|
4491 |
* e1000_led_off - Turns off the software controllable LED
|
|
|
4492 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4493 |
*/
|
|
|
4494 |
s32 e1000_led_off(struct e1000_hw *hw)
|
|
|
4495 |
{
|
|
|
4496 |
u32 ctrl = er32(CTRL);
|
|
|
4497 |
|
|
|
4498 |
e_dbg("e1000_led_off");
|
|
|
4499 |
|
|
|
4500 |
switch (hw->mac_type) {
|
|
|
4501 |
case e1000_82542_rev2_0:
|
|
|
4502 |
case e1000_82542_rev2_1:
|
|
|
4503 |
case e1000_82543:
|
|
|
4504 |
/* Clear SW Defineable Pin 0 to turn off the LED */
|
|
|
4505 |
ctrl &= ~E1000_CTRL_SWDPIN0;
|
|
|
4506 |
ctrl |= E1000_CTRL_SWDPIO0;
|
|
|
4507 |
break;
|
|
|
4508 |
case e1000_82544:
|
|
|
4509 |
if (hw->media_type == e1000_media_type_fiber) {
|
|
|
4510 |
/* Clear SW Defineable Pin 0 to turn off the LED */
|
|
|
4511 |
ctrl &= ~E1000_CTRL_SWDPIN0;
|
|
|
4512 |
ctrl |= E1000_CTRL_SWDPIO0;
|
|
|
4513 |
} else {
|
|
|
4514 |
/* Set SW Defineable Pin 0 to turn off the LED */
|
|
|
4515 |
ctrl |= E1000_CTRL_SWDPIN0;
|
|
|
4516 |
ctrl |= E1000_CTRL_SWDPIO0;
|
|
|
4517 |
}
|
|
|
4518 |
break;
|
|
|
4519 |
default:
|
|
|
4520 |
if (hw->media_type == e1000_media_type_fiber) {
|
|
|
4521 |
/* Set SW Defineable Pin 0 to turn off the LED */
|
|
|
4522 |
ctrl |= E1000_CTRL_SWDPIN0;
|
|
|
4523 |
ctrl |= E1000_CTRL_SWDPIO0;
|
|
|
4524 |
} else if (hw->media_type == e1000_media_type_copper) {
|
|
|
4525 |
ew32(LEDCTL, hw->ledctl_mode1);
|
|
|
4526 |
return E1000_SUCCESS;
|
|
|
4527 |
}
|
|
|
4528 |
break;
|
|
|
4529 |
}
|
|
|
4530 |
|
|
|
4531 |
ew32(CTRL, ctrl);
|
|
|
4532 |
|
|
|
4533 |
return E1000_SUCCESS;
|
|
|
4534 |
}
|
|
|
4535 |
|
|
|
4536 |
/**
|
|
|
4537 |
* e1000_clear_hw_cntrs - Clears all hardware statistics counters.
|
|
|
4538 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4539 |
*/
|
|
|
4540 |
static void e1000_clear_hw_cntrs(struct e1000_hw *hw)
|
|
|
4541 |
{
|
|
|
4542 |
volatile u32 temp __attribute__ ((unused));
|
|
|
4543 |
|
|
|
4544 |
temp = er32(CRCERRS);
|
|
|
4545 |
temp = er32(SYMERRS);
|
|
|
4546 |
temp = er32(MPC);
|
|
|
4547 |
temp = er32(SCC);
|
|
|
4548 |
temp = er32(ECOL);
|
|
|
4549 |
temp = er32(MCC);
|
|
|
4550 |
temp = er32(LATECOL);
|
|
|
4551 |
temp = er32(COLC);
|
|
|
4552 |
temp = er32(DC);
|
|
|
4553 |
temp = er32(SEC);
|
|
|
4554 |
temp = er32(RLEC);
|
|
|
4555 |
temp = er32(XONRXC);
|
|
|
4556 |
temp = er32(XONTXC);
|
|
|
4557 |
temp = er32(XOFFRXC);
|
|
|
4558 |
temp = er32(XOFFTXC);
|
|
|
4559 |
temp = er32(FCRUC);
|
|
|
4560 |
|
|
|
4561 |
temp = er32(PRC64);
|
|
|
4562 |
temp = er32(PRC127);
|
|
|
4563 |
temp = er32(PRC255);
|
|
|
4564 |
temp = er32(PRC511);
|
|
|
4565 |
temp = er32(PRC1023);
|
|
|
4566 |
temp = er32(PRC1522);
|
|
|
4567 |
|
|
|
4568 |
temp = er32(GPRC);
|
|
|
4569 |
temp = er32(BPRC);
|
|
|
4570 |
temp = er32(MPRC);
|
|
|
4571 |
temp = er32(GPTC);
|
|
|
4572 |
temp = er32(GORCL);
|
|
|
4573 |
temp = er32(GORCH);
|
|
|
4574 |
temp = er32(GOTCL);
|
|
|
4575 |
temp = er32(GOTCH);
|
|
|
4576 |
temp = er32(RNBC);
|
|
|
4577 |
temp = er32(RUC);
|
|
|
4578 |
temp = er32(RFC);
|
|
|
4579 |
temp = er32(ROC);
|
|
|
4580 |
temp = er32(RJC);
|
|
|
4581 |
temp = er32(TORL);
|
|
|
4582 |
temp = er32(TORH);
|
|
|
4583 |
temp = er32(TOTL);
|
|
|
4584 |
temp = er32(TOTH);
|
|
|
4585 |
temp = er32(TPR);
|
|
|
4586 |
temp = er32(TPT);
|
|
|
4587 |
|
|
|
4588 |
temp = er32(PTC64);
|
|
|
4589 |
temp = er32(PTC127);
|
|
|
4590 |
temp = er32(PTC255);
|
|
|
4591 |
temp = er32(PTC511);
|
|
|
4592 |
temp = er32(PTC1023);
|
|
|
4593 |
temp = er32(PTC1522);
|
|
|
4594 |
|
|
|
4595 |
temp = er32(MPTC);
|
|
|
4596 |
temp = er32(BPTC);
|
|
|
4597 |
|
|
|
4598 |
if (hw->mac_type < e1000_82543)
|
|
|
4599 |
return;
|
|
|
4600 |
|
|
|
4601 |
temp = er32(ALGNERRC);
|
|
|
4602 |
temp = er32(RXERRC);
|
|
|
4603 |
temp = er32(TNCRS);
|
|
|
4604 |
temp = er32(CEXTERR);
|
|
|
4605 |
temp = er32(TSCTC);
|
|
|
4606 |
temp = er32(TSCTFC);
|
|
|
4607 |
|
|
|
4608 |
if (hw->mac_type <= e1000_82544)
|
|
|
4609 |
return;
|
|
|
4610 |
|
|
|
4611 |
temp = er32(MGTPRC);
|
|
|
4612 |
temp = er32(MGTPDC);
|
|
|
4613 |
temp = er32(MGTPTC);
|
|
|
4614 |
}
|
|
|
4615 |
|
|
|
4616 |
/**
|
|
|
4617 |
* e1000_reset_adaptive - Resets Adaptive IFS to its default state.
|
|
|
4618 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4619 |
*
|
|
|
4620 |
* Call this after e1000_init_hw. You may override the IFS defaults by setting
|
|
|
4621 |
* hw->ifs_params_forced to true. However, you must initialize hw->
|
|
|
4622 |
* current_ifs_val, ifs_min_val, ifs_max_val, ifs_step_size, and ifs_ratio
|
|
|
4623 |
* before calling this function.
|
|
|
4624 |
*/
|
|
|
4625 |
void e1000_reset_adaptive(struct e1000_hw *hw)
|
|
|
4626 |
{
|
|
|
4627 |
e_dbg("e1000_reset_adaptive");
|
|
|
4628 |
|
|
|
4629 |
if (hw->adaptive_ifs) {
|
|
|
4630 |
if (!hw->ifs_params_forced) {
|
|
|
4631 |
hw->current_ifs_val = 0;
|
|
|
4632 |
hw->ifs_min_val = IFS_MIN;
|
|
|
4633 |
hw->ifs_max_val = IFS_MAX;
|
|
|
4634 |
hw->ifs_step_size = IFS_STEP;
|
|
|
4635 |
hw->ifs_ratio = IFS_RATIO;
|
|
|
4636 |
}
|
|
|
4637 |
hw->in_ifs_mode = false;
|
|
|
4638 |
ew32(AIT, 0);
|
|
|
4639 |
} else {
|
|
|
4640 |
e_dbg("Not in Adaptive IFS mode!\n");
|
|
|
4641 |
}
|
|
|
4642 |
}
|
|
|
4643 |
|
|
|
4644 |
/**
|
|
|
4645 |
* e1000_update_adaptive - update adaptive IFS
|
|
|
4646 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4647 |
* @tx_packets: Number of transmits since last callback
|
|
|
4648 |
* @total_collisions: Number of collisions since last callback
|
|
|
4649 |
*
|
|
|
4650 |
* Called during the callback/watchdog routine to update IFS value based on
|
|
|
4651 |
* the ratio of transmits to collisions.
|
|
|
4652 |
*/
|
|
|
4653 |
void e1000_update_adaptive(struct e1000_hw *hw)
|
|
|
4654 |
{
|
|
|
4655 |
e_dbg("e1000_update_adaptive");
|
|
|
4656 |
|
|
|
4657 |
if (hw->adaptive_ifs) {
|
|
|
4658 |
if ((hw->collision_delta *hw->ifs_ratio) > hw->tx_packet_delta) {
|
|
|
4659 |
if (hw->tx_packet_delta > MIN_NUM_XMITS) {
|
|
|
4660 |
hw->in_ifs_mode = true;
|
|
|
4661 |
if (hw->current_ifs_val < hw->ifs_max_val) {
|
|
|
4662 |
if (hw->current_ifs_val == 0)
|
|
|
4663 |
hw->current_ifs_val =
|
|
|
4664 |
hw->ifs_min_val;
|
|
|
4665 |
else
|
|
|
4666 |
hw->current_ifs_val +=
|
|
|
4667 |
hw->ifs_step_size;
|
|
|
4668 |
ew32(AIT, hw->current_ifs_val);
|
|
|
4669 |
}
|
|
|
4670 |
}
|
|
|
4671 |
} else {
|
|
|
4672 |
if (hw->in_ifs_mode
|
|
|
4673 |
&& (hw->tx_packet_delta <= MIN_NUM_XMITS)) {
|
|
|
4674 |
hw->current_ifs_val = 0;
|
|
|
4675 |
hw->in_ifs_mode = false;
|
|
|
4676 |
ew32(AIT, 0);
|
|
|
4677 |
}
|
|
|
4678 |
}
|
|
|
4679 |
} else {
|
|
|
4680 |
e_dbg("Not in Adaptive IFS mode!\n");
|
|
|
4681 |
}
|
|
|
4682 |
}
|
|
|
4683 |
|
|
|
4684 |
/**
|
|
|
4685 |
* e1000_tbi_adjust_stats
|
|
|
4686 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4687 |
* @frame_len: The length of the frame in question
|
|
|
4688 |
* @mac_addr: The Ethernet destination address of the frame in question
|
|
|
4689 |
*
|
|
|
4690 |
* Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT
|
|
|
4691 |
*/
|
|
|
4692 |
void e1000_tbi_adjust_stats(struct e1000_hw *hw, struct e1000_hw_stats *stats,
|
|
|
4693 |
u32 frame_len, u8 *mac_addr)
|
|
|
4694 |
{
|
|
|
4695 |
u64 carry_bit;
|
|
|
4696 |
|
|
|
4697 |
/* First adjust the frame length. */
|
|
|
4698 |
frame_len--;
|
|
|
4699 |
/* We need to adjust the statistics counters, since the hardware
|
|
|
4700 |
* counters overcount this packet as a CRC error and undercount
|
|
|
4701 |
* the packet as a good packet
|
|
|
4702 |
*/
|
|
|
4703 |
/* This packet should not be counted as a CRC error. */
|
|
|
4704 |
stats->crcerrs--;
|
|
|
4705 |
/* This packet does count as a Good Packet Received. */
|
|
|
4706 |
stats->gprc++;
|
|
|
4707 |
|
|
|
4708 |
/* Adjust the Good Octets received counters */
|
|
|
4709 |
carry_bit = 0x80000000 & stats->gorcl;
|
|
|
4710 |
stats->gorcl += frame_len;
|
|
|
4711 |
/* If the high bit of Gorcl (the low 32 bits of the Good Octets
|
|
|
4712 |
* Received Count) was one before the addition,
|
|
|
4713 |
* AND it is zero after, then we lost the carry out,
|
|
|
4714 |
* need to add one to Gorch (Good Octets Received Count High).
|
|
|
4715 |
* This could be simplified if all environments supported
|
|
|
4716 |
* 64-bit integers.
|
|
|
4717 |
*/
|
|
|
4718 |
if (carry_bit && ((stats->gorcl & 0x80000000) == 0))
|
|
|
4719 |
stats->gorch++;
|
|
|
4720 |
/* Is this a broadcast or multicast? Check broadcast first,
|
|
|
4721 |
* since the test for a multicast frame will test positive on
|
|
|
4722 |
* a broadcast frame.
|
|
|
4723 |
*/
|
|
|
4724 |
if ((mac_addr[0] == (u8) 0xff) && (mac_addr[1] == (u8) 0xff))
|
|
|
4725 |
/* Broadcast packet */
|
|
|
4726 |
stats->bprc++;
|
|
|
4727 |
else if (*mac_addr & 0x01)
|
|
|
4728 |
/* Multicast packet */
|
|
|
4729 |
stats->mprc++;
|
|
|
4730 |
|
|
|
4731 |
if (frame_len == hw->max_frame_size) {
|
|
|
4732 |
/* In this case, the hardware has overcounted the number of
|
|
|
4733 |
* oversize frames.
|
|
|
4734 |
*/
|
|
|
4735 |
if (stats->roc > 0)
|
|
|
4736 |
stats->roc--;
|
|
|
4737 |
}
|
|
|
4738 |
|
|
|
4739 |
/* Adjust the bin counters when the extra byte put the frame in the
|
|
|
4740 |
* wrong bin. Remember that the frame_len was adjusted above.
|
|
|
4741 |
*/
|
|
|
4742 |
if (frame_len == 64) {
|
|
|
4743 |
stats->prc64++;
|
|
|
4744 |
stats->prc127--;
|
|
|
4745 |
} else if (frame_len == 127) {
|
|
|
4746 |
stats->prc127++;
|
|
|
4747 |
stats->prc255--;
|
|
|
4748 |
} else if (frame_len == 255) {
|
|
|
4749 |
stats->prc255++;
|
|
|
4750 |
stats->prc511--;
|
|
|
4751 |
} else if (frame_len == 511) {
|
|
|
4752 |
stats->prc511++;
|
|
|
4753 |
stats->prc1023--;
|
|
|
4754 |
} else if (frame_len == 1023) {
|
|
|
4755 |
stats->prc1023++;
|
|
|
4756 |
stats->prc1522--;
|
|
|
4757 |
} else if (frame_len == 1522) {
|
|
|
4758 |
stats->prc1522++;
|
|
|
4759 |
}
|
|
|
4760 |
}
|
|
|
4761 |
|
|
|
4762 |
/**
|
|
|
4763 |
* e1000_get_bus_info
|
|
|
4764 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4765 |
*
|
|
|
4766 |
* Gets the current PCI bus type, speed, and width of the hardware
|
|
|
4767 |
*/
|
|
|
4768 |
void e1000_get_bus_info(struct e1000_hw *hw)
|
|
|
4769 |
{
|
|
|
4770 |
u32 status;
|
|
|
4771 |
|
|
|
4772 |
switch (hw->mac_type) {
|
|
|
4773 |
case e1000_82542_rev2_0:
|
|
|
4774 |
case e1000_82542_rev2_1:
|
|
|
4775 |
hw->bus_type = e1000_bus_type_pci;
|
|
|
4776 |
hw->bus_speed = e1000_bus_speed_unknown;
|
|
|
4777 |
hw->bus_width = e1000_bus_width_unknown;
|
|
|
4778 |
break;
|
|
|
4779 |
default:
|
|
|
4780 |
status = er32(STATUS);
|
|
|
4781 |
hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ?
|
|
|
4782 |
e1000_bus_type_pcix : e1000_bus_type_pci;
|
|
|
4783 |
|
|
|
4784 |
if (hw->device_id == E1000_DEV_ID_82546EB_QUAD_COPPER) {
|
|
|
4785 |
hw->bus_speed = (hw->bus_type == e1000_bus_type_pci) ?
|
|
|
4786 |
e1000_bus_speed_66 : e1000_bus_speed_120;
|
|
|
4787 |
} else if (hw->bus_type == e1000_bus_type_pci) {
|
|
|
4788 |
hw->bus_speed = (status & E1000_STATUS_PCI66) ?
|
|
|
4789 |
e1000_bus_speed_66 : e1000_bus_speed_33;
|
|
|
4790 |
} else {
|
|
|
4791 |
switch (status & E1000_STATUS_PCIX_SPEED) {
|
|
|
4792 |
case E1000_STATUS_PCIX_SPEED_66:
|
|
|
4793 |
hw->bus_speed = e1000_bus_speed_66;
|
|
|
4794 |
break;
|
|
|
4795 |
case E1000_STATUS_PCIX_SPEED_100:
|
|
|
4796 |
hw->bus_speed = e1000_bus_speed_100;
|
|
|
4797 |
break;
|
|
|
4798 |
case E1000_STATUS_PCIX_SPEED_133:
|
|
|
4799 |
hw->bus_speed = e1000_bus_speed_133;
|
|
|
4800 |
break;
|
|
|
4801 |
default:
|
|
|
4802 |
hw->bus_speed = e1000_bus_speed_reserved;
|
|
|
4803 |
break;
|
|
|
4804 |
}
|
|
|
4805 |
}
|
|
|
4806 |
hw->bus_width = (status & E1000_STATUS_BUS64) ?
|
|
|
4807 |
e1000_bus_width_64 : e1000_bus_width_32;
|
|
|
4808 |
break;
|
|
|
4809 |
}
|
|
|
4810 |
}
|
|
|
4811 |
|
|
|
4812 |
/**
|
|
|
4813 |
* e1000_write_reg_io
|
|
|
4814 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4815 |
* @offset: offset to write to
|
|
|
4816 |
* @value: value to write
|
|
|
4817 |
*
|
|
|
4818 |
* Writes a value to one of the devices registers using port I/O (as opposed to
|
|
|
4819 |
* memory mapped I/O). Only 82544 and newer devices support port I/O.
|
|
|
4820 |
*/
|
|
|
4821 |
static void e1000_write_reg_io(struct e1000_hw *hw, u32 offset, u32 value)
|
|
|
4822 |
{
|
|
|
4823 |
unsigned long io_addr = hw->io_base;
|
|
|
4824 |
unsigned long io_data = hw->io_base + 4;
|
|
|
4825 |
|
|
|
4826 |
e1000_io_write(hw, io_addr, offset);
|
|
|
4827 |
e1000_io_write(hw, io_data, value);
|
|
|
4828 |
}
|
|
|
4829 |
|
|
|
4830 |
/**
|
|
|
4831 |
* e1000_get_cable_length - Estimates the cable length.
|
|
|
4832 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4833 |
* @min_length: The estimated minimum length
|
|
|
4834 |
* @max_length: The estimated maximum length
|
|
|
4835 |
*
|
|
|
4836 |
* returns: - E1000_ERR_XXX
|
|
|
4837 |
* E1000_SUCCESS
|
|
|
4838 |
*
|
|
|
4839 |
* This function always returns a ranged length (minimum & maximum).
|
|
|
4840 |
* So for M88 phy's, this function interprets the one value returned from the
|
|
|
4841 |
* register to the minimum and maximum range.
|
|
|
4842 |
* For IGP phy's, the function calculates the range by the AGC registers.
|
|
|
4843 |
*/
|
|
|
4844 |
static s32 e1000_get_cable_length(struct e1000_hw *hw, u16 *min_length,
|
|
|
4845 |
u16 *max_length)
|
|
|
4846 |
{
|
|
|
4847 |
s32 ret_val;
|
|
|
4848 |
u16 agc_value = 0;
|
|
|
4849 |
u16 i, phy_data;
|
|
|
4850 |
u16 cable_length;
|
|
|
4851 |
|
|
|
4852 |
e_dbg("e1000_get_cable_length");
|
|
|
4853 |
|
|
|
4854 |
*min_length = *max_length = 0;
|
|
|
4855 |
|
|
|
4856 |
/* Use old method for Phy older than IGP */
|
|
|
4857 |
if (hw->phy_type == e1000_phy_m88) {
|
|
|
4858 |
|
|
|
4859 |
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
|
|
|
4860 |
&phy_data);
|
|
|
4861 |
if (ret_val)
|
|
|
4862 |
return ret_val;
|
|
|
4863 |
cable_length = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
|
|
|
4864 |
M88E1000_PSSR_CABLE_LENGTH_SHIFT;
|
|
|
4865 |
|
|
|
4866 |
/* Convert the enum value to ranged values */
|
|
|
4867 |
switch (cable_length) {
|
|
|
4868 |
case e1000_cable_length_50:
|
|
|
4869 |
*min_length = 0;
|
|
|
4870 |
*max_length = e1000_igp_cable_length_50;
|
|
|
4871 |
break;
|
|
|
4872 |
case e1000_cable_length_50_80:
|
|
|
4873 |
*min_length = e1000_igp_cable_length_50;
|
|
|
4874 |
*max_length = e1000_igp_cable_length_80;
|
|
|
4875 |
break;
|
|
|
4876 |
case e1000_cable_length_80_110:
|
|
|
4877 |
*min_length = e1000_igp_cable_length_80;
|
|
|
4878 |
*max_length = e1000_igp_cable_length_110;
|
|
|
4879 |
break;
|
|
|
4880 |
case e1000_cable_length_110_140:
|
|
|
4881 |
*min_length = e1000_igp_cable_length_110;
|
|
|
4882 |
*max_length = e1000_igp_cable_length_140;
|
|
|
4883 |
break;
|
|
|
4884 |
case e1000_cable_length_140:
|
|
|
4885 |
*min_length = e1000_igp_cable_length_140;
|
|
|
4886 |
*max_length = e1000_igp_cable_length_170;
|
|
|
4887 |
break;
|
|
|
4888 |
default:
|
|
|
4889 |
return -E1000_ERR_PHY;
|
|
|
4890 |
break;
|
|
|
4891 |
}
|
|
|
4892 |
} else if (hw->phy_type == e1000_phy_igp) { /* For IGP PHY */
|
|
|
4893 |
u16 cur_agc_value;
|
|
|
4894 |
u16 min_agc_value = IGP01E1000_AGC_LENGTH_TABLE_SIZE;
|
|
|
4895 |
u16 agc_reg_array[IGP01E1000_PHY_CHANNEL_NUM] =
|
|
|
4896 |
{ IGP01E1000_PHY_AGC_A,
|
|
|
4897 |
IGP01E1000_PHY_AGC_B,
|
|
|
4898 |
IGP01E1000_PHY_AGC_C,
|
|
|
4899 |
IGP01E1000_PHY_AGC_D
|
|
|
4900 |
};
|
|
|
4901 |
/* Read the AGC registers for all channels */
|
|
|
4902 |
for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
|
|
|
4903 |
|
|
|
4904 |
ret_val =
|
|
|
4905 |
e1000_read_phy_reg(hw, agc_reg_array[i], &phy_data);
|
|
|
4906 |
if (ret_val)
|
|
|
4907 |
return ret_val;
|
|
|
4908 |
|
|
|
4909 |
cur_agc_value = phy_data >> IGP01E1000_AGC_LENGTH_SHIFT;
|
|
|
4910 |
|
|
|
4911 |
/* Value bound check. */
|
|
|
4912 |
if ((cur_agc_value >=
|
|
|
4913 |
IGP01E1000_AGC_LENGTH_TABLE_SIZE - 1)
|
|
|
4914 |
|| (cur_agc_value == 0))
|
|
|
4915 |
return -E1000_ERR_PHY;
|
|
|
4916 |
|
|
|
4917 |
agc_value += cur_agc_value;
|
|
|
4918 |
|
|
|
4919 |
/* Update minimal AGC value. */
|
|
|
4920 |
if (min_agc_value > cur_agc_value)
|
|
|
4921 |
min_agc_value = cur_agc_value;
|
|
|
4922 |
}
|
|
|
4923 |
|
|
|
4924 |
/* Remove the minimal AGC result for length < 50m */
|
|
|
4925 |
if (agc_value <
|
|
|
4926 |
IGP01E1000_PHY_CHANNEL_NUM * e1000_igp_cable_length_50) {
|
|
|
4927 |
agc_value -= min_agc_value;
|
|
|
4928 |
|
|
|
4929 |
/* Get the average length of the remaining 3 channels */
|
|
|
4930 |
agc_value /= (IGP01E1000_PHY_CHANNEL_NUM - 1);
|
|
|
4931 |
} else {
|
|
|
4932 |
/* Get the average length of all the 4 channels. */
|
|
|
4933 |
agc_value /= IGP01E1000_PHY_CHANNEL_NUM;
|
|
|
4934 |
}
|
|
|
4935 |
|
|
|
4936 |
/* Set the range of the calculated length. */
|
|
|
4937 |
*min_length = ((e1000_igp_cable_length_table[agc_value] -
|
|
|
4938 |
IGP01E1000_AGC_RANGE) > 0) ?
|
|
|
4939 |
(e1000_igp_cable_length_table[agc_value] -
|
|
|
4940 |
IGP01E1000_AGC_RANGE) : 0;
|
|
|
4941 |
*max_length = e1000_igp_cable_length_table[agc_value] +
|
|
|
4942 |
IGP01E1000_AGC_RANGE;
|
|
|
4943 |
}
|
|
|
4944 |
|
|
|
4945 |
return E1000_SUCCESS;
|
|
|
4946 |
}
|
|
|
4947 |
|
|
|
4948 |
/**
|
|
|
4949 |
* e1000_check_polarity - Check the cable polarity
|
|
|
4950 |
* @hw: Struct containing variables accessed by shared code
|
|
|
4951 |
* @polarity: output parameter : 0 - Polarity is not reversed
|
|
|
4952 |
* 1 - Polarity is reversed.
|
|
|
4953 |
*
|
|
|
4954 |
* returns: - E1000_ERR_XXX
|
|
|
4955 |
* E1000_SUCCESS
|
|
|
4956 |
*
|
|
|
4957 |
* For phy's older than IGP, this function simply reads the polarity bit in the
|
|
|
4958 |
* Phy Status register. For IGP phy's, this bit is valid only if link speed is
|
|
|
4959 |
* 10 Mbps. If the link speed is 100 Mbps there is no polarity so this bit will
|
|
|
4960 |
* return 0. If the link speed is 1000 Mbps the polarity status is in the
|
|
|
4961 |
* IGP01E1000_PHY_PCS_INIT_REG.
|
|
|
4962 |
*/
|
|
|
4963 |
static s32 e1000_check_polarity(struct e1000_hw *hw,
|
|
|
4964 |
e1000_rev_polarity *polarity)
|
|
|
4965 |
{
|
|
|
4966 |
s32 ret_val;
|
|
|
4967 |
u16 phy_data;
|
|
|
4968 |
|
|
|
4969 |
e_dbg("e1000_check_polarity");
|
|
|
4970 |
|
|
|
4971 |
if (hw->phy_type == e1000_phy_m88) {
|
|
|
4972 |
/* return the Polarity bit in the Status register. */
|
|
|
4973 |
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
|
|
|
4974 |
&phy_data);
|
|
|
4975 |
if (ret_val)
|
|
|
4976 |
return ret_val;
|
|
|
4977 |
*polarity = ((phy_data & M88E1000_PSSR_REV_POLARITY) >>
|
|
|
4978 |
M88E1000_PSSR_REV_POLARITY_SHIFT) ?
|
|
|
4979 |
e1000_rev_polarity_reversed : e1000_rev_polarity_normal;
|
|
|
4980 |
|
|
|
4981 |
} else if (hw->phy_type == e1000_phy_igp) {
|
|
|
4982 |
/* Read the Status register to check the speed */
|
|
|
4983 |
ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS,
|
|
|
4984 |
&phy_data);
|
|
|
4985 |
if (ret_val)
|
|
|
4986 |
return ret_val;
|
|
|
4987 |
|
|
|
4988 |
/* If speed is 1000 Mbps, must read the IGP01E1000_PHY_PCS_INIT_REG to
|
|
|
4989 |
* find the polarity status */
|
|
|
4990 |
if ((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
|
|
|
4991 |
IGP01E1000_PSSR_SPEED_1000MBPS) {
|
|
|
4992 |
|
|
|
4993 |
/* Read the GIG initialization PCS register (0x00B4) */
|
|
|
4994 |
ret_val =
|
|
|
4995 |
e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG,
|
|
|
4996 |
&phy_data);
|
|
|
4997 |
if (ret_val)
|
|
|
4998 |
return ret_val;
|
|
|
4999 |
|
|
|
5000 |
/* Check the polarity bits */
|
|
|
5001 |
*polarity = (phy_data & IGP01E1000_PHY_POLARITY_MASK) ?
|
|
|
5002 |
e1000_rev_polarity_reversed :
|
|
|
5003 |
e1000_rev_polarity_normal;
|
|
|
5004 |
} else {
|
|
|
5005 |
/* For 10 Mbps, read the polarity bit in the status register. (for
|
|
|
5006 |
* 100 Mbps this bit is always 0) */
|
|
|
5007 |
*polarity =
|
|
|
5008 |
(phy_data & IGP01E1000_PSSR_POLARITY_REVERSED) ?
|
|
|
5009 |
e1000_rev_polarity_reversed :
|
|
|
5010 |
e1000_rev_polarity_normal;
|
|
|
5011 |
}
|
|
|
5012 |
}
|
|
|
5013 |
return E1000_SUCCESS;
|
|
|
5014 |
}
|
|
|
5015 |
|
|
|
5016 |
/**
|
|
|
5017 |
* e1000_check_downshift - Check if Downshift occurred
|
|
|
5018 |
* @hw: Struct containing variables accessed by shared code
|
|
|
5019 |
* @downshift: output parameter : 0 - No Downshift occurred.
|
|
|
5020 |
* 1 - Downshift occurred.
|
|
|
5021 |
*
|
|
|
5022 |
* returns: - E1000_ERR_XXX
|
|
|
5023 |
* E1000_SUCCESS
|
|
|
5024 |
*
|
|
|
5025 |
* For phy's older than IGP, this function reads the Downshift bit in the Phy
|
|
|
5026 |
* Specific Status register. For IGP phy's, it reads the Downgrade bit in the
|
|
|
5027 |
* Link Health register. In IGP this bit is latched high, so the driver must
|
|
|
5028 |
* read it immediately after link is established.
|
|
|
5029 |
*/
|
|
|
5030 |
static s32 e1000_check_downshift(struct e1000_hw *hw)
|
|
|
5031 |
{
|
|
|
5032 |
s32 ret_val;
|
|
|
5033 |
u16 phy_data;
|
|
|
5034 |
|
|
|
5035 |
e_dbg("e1000_check_downshift");
|
|
|
5036 |
|
|
|
5037 |
if (hw->phy_type == e1000_phy_igp) {
|
|
|
5038 |
ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_LINK_HEALTH,
|
|
|
5039 |
&phy_data);
|
|
|
5040 |
if (ret_val)
|
|
|
5041 |
return ret_val;
|
|
|
5042 |
|
|
|
5043 |
hw->speed_downgraded =
|
|
|
5044 |
(phy_data & IGP01E1000_PLHR_SS_DOWNGRADE) ? 1 : 0;
|
|
|
5045 |
} else if (hw->phy_type == e1000_phy_m88) {
|
|
|
5046 |
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
|
|
|
5047 |
&phy_data);
|
|
|
5048 |
if (ret_val)
|
|
|
5049 |
return ret_val;
|
|
|
5050 |
|
|
|
5051 |
hw->speed_downgraded = (phy_data & M88E1000_PSSR_DOWNSHIFT) >>
|
|
|
5052 |
M88E1000_PSSR_DOWNSHIFT_SHIFT;
|
|
|
5053 |
}
|
|
|
5054 |
|
|
|
5055 |
return E1000_SUCCESS;
|
|
|
5056 |
}
|
|
|
5057 |
|
|
|
5058 |
/**
|
|
|
5059 |
* e1000_config_dsp_after_link_change
|
|
|
5060 |
* @hw: Struct containing variables accessed by shared code
|
|
|
5061 |
* @link_up: was link up at the time this was called
|
|
|
5062 |
*
|
|
|
5063 |
* returns: - E1000_ERR_PHY if fail to read/write the PHY
|
|
|
5064 |
* E1000_SUCCESS at any other case.
|
|
|
5065 |
*
|
|
|
5066 |
* 82541_rev_2 & 82547_rev_2 have the capability to configure the DSP when a
|
|
|
5067 |
* gigabit link is achieved to improve link quality.
|
|
|
5068 |
*/
|
|
|
5069 |
|
|
|
5070 |
static s32 e1000_config_dsp_after_link_change(struct e1000_hw *hw, bool link_up)
|
|
|
5071 |
{
|
|
|
5072 |
s32 ret_val;
|
|
|
5073 |
u16 phy_data, phy_saved_data, speed, duplex, i;
|
|
|
5074 |
u16 dsp_reg_array[IGP01E1000_PHY_CHANNEL_NUM] =
|
|
|
5075 |
{ IGP01E1000_PHY_AGC_PARAM_A,
|
|
|
5076 |
IGP01E1000_PHY_AGC_PARAM_B,
|
|
|
5077 |
IGP01E1000_PHY_AGC_PARAM_C,
|
|
|
5078 |
IGP01E1000_PHY_AGC_PARAM_D
|
|
|
5079 |
};
|
|
|
5080 |
u16 min_length, max_length;
|
|
|
5081 |
|
|
|
5082 |
e_dbg("e1000_config_dsp_after_link_change");
|
|
|
5083 |
|
|
|
5084 |
if (hw->phy_type != e1000_phy_igp)
|
|
|
5085 |
return E1000_SUCCESS;
|
|
|
5086 |
|
|
|
5087 |
if (link_up) {
|
|
|
5088 |
ret_val = e1000_get_speed_and_duplex(hw, &speed, &duplex);
|
|
|
5089 |
if (ret_val) {
|
|
|
5090 |
e_dbg("Error getting link speed and duplex\n");
|
|
|
5091 |
return ret_val;
|
|
|
5092 |
}
|
|
|
5093 |
|
|
|
5094 |
if (speed == SPEED_1000) {
|
|
|
5095 |
|
|
|
5096 |
ret_val =
|
|
|
5097 |
e1000_get_cable_length(hw, &min_length,
|
|
|
5098 |
&max_length);
|
|
|
5099 |
if (ret_val)
|
|
|
5100 |
return ret_val;
|
|
|
5101 |
|
|
|
5102 |
if ((hw->dsp_config_state == e1000_dsp_config_enabled)
|
|
|
5103 |
&& min_length >= e1000_igp_cable_length_50) {
|
|
|
5104 |
|
|
|
5105 |
for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
|
|
|
5106 |
ret_val =
|
|
|
5107 |
e1000_read_phy_reg(hw,
|
|
|
5108 |
dsp_reg_array[i],
|
|
|
5109 |
&phy_data);
|
|
|
5110 |
if (ret_val)
|
|
|
5111 |
return ret_val;
|
|
|
5112 |
|
|
|
5113 |
phy_data &=
|
|
|
5114 |
~IGP01E1000_PHY_EDAC_MU_INDEX;
|
|
|
5115 |
|
|
|
5116 |
ret_val =
|
|
|
5117 |
e1000_write_phy_reg(hw,
|
|
|
5118 |
dsp_reg_array
|
|
|
5119 |
[i], phy_data);
|
|
|
5120 |
if (ret_val)
|
|
|
5121 |
return ret_val;
|
|
|
5122 |
}
|
|
|
5123 |
hw->dsp_config_state =
|
|
|
5124 |
e1000_dsp_config_activated;
|
|
|
5125 |
}
|
|
|
5126 |
|
|
|
5127 |
if ((hw->ffe_config_state == e1000_ffe_config_enabled)
|
|
|
5128 |
&& (min_length < e1000_igp_cable_length_50)) {
|
|
|
5129 |
|
|
|
5130 |
u16 ffe_idle_err_timeout =
|
|
|
5131 |
FFE_IDLE_ERR_COUNT_TIMEOUT_20;
|
|
|
5132 |
u32 idle_errs = 0;
|
|
|
5133 |
|
|
|
5134 |
/* clear previous idle error counts */
|
|
|
5135 |
ret_val =
|
|
|
5136 |
e1000_read_phy_reg(hw, PHY_1000T_STATUS,
|
|
|
5137 |
&phy_data);
|
|
|
5138 |
if (ret_val)
|
|
|
5139 |
return ret_val;
|
|
|
5140 |
|
|
|
5141 |
for (i = 0; i < ffe_idle_err_timeout; i++) {
|
|
|
5142 |
udelay(1000);
|
|
|
5143 |
ret_val =
|
|
|
5144 |
e1000_read_phy_reg(hw,
|
|
|
5145 |
PHY_1000T_STATUS,
|
|
|
5146 |
&phy_data);
|
|
|
5147 |
if (ret_val)
|
|
|
5148 |
return ret_val;
|
|
|
5149 |
|
|
|
5150 |
idle_errs +=
|
|
|
5151 |
(phy_data &
|
|
|
5152 |
SR_1000T_IDLE_ERROR_CNT);
|
|
|
5153 |
if (idle_errs >
|
|
|
5154 |
SR_1000T_PHY_EXCESSIVE_IDLE_ERR_COUNT)
|
|
|
5155 |
{
|
|
|
5156 |
hw->ffe_config_state =
|
|
|
5157 |
e1000_ffe_config_active;
|
|
|
5158 |
|
|
|
5159 |
ret_val =
|
|
|
5160 |
e1000_write_phy_reg(hw,
|
|
|
5161 |
IGP01E1000_PHY_DSP_FFE,
|
|
|
5162 |
IGP01E1000_PHY_DSP_FFE_CM_CP);
|
|
|
5163 |
if (ret_val)
|
|
|
5164 |
return ret_val;
|
|
|
5165 |
break;
|
|
|
5166 |
}
|
|
|
5167 |
|
|
|
5168 |
if (idle_errs)
|
|
|
5169 |
ffe_idle_err_timeout =
|
|
|
5170 |
FFE_IDLE_ERR_COUNT_TIMEOUT_100;
|
|
|
5171 |
}
|
|
|
5172 |
}
|
|
|
5173 |
}
|
|
|
5174 |
} else {
|
|
|
5175 |
if (hw->dsp_config_state == e1000_dsp_config_activated) {
|
|
|
5176 |
/* Save off the current value of register 0x2F5B to be restored at
|
|
|
5177 |
* the end of the routines. */
|
|
|
5178 |
ret_val =
|
|
|
5179 |
e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
|
|
|
5180 |
|
|
|
5181 |
if (ret_val)
|
|
|
5182 |
return ret_val;
|
|
|
5183 |
|
|
|
5184 |
/* Disable the PHY transmitter */
|
|
|
5185 |
ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
|
|
|
5186 |
|
|
|
5187 |
if (ret_val)
|
|
|
5188 |
return ret_val;
|
|
|
5189 |
|
|
|
5190 |
mdelay(20);
|
|
|
5191 |
|
|
|
5192 |
ret_val = e1000_write_phy_reg(hw, 0x0000,
|
|
|
5193 |
IGP01E1000_IEEE_FORCE_GIGA);
|
|
|
5194 |
if (ret_val)
|
|
|
5195 |
return ret_val;
|
|
|
5196 |
for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
|
|
|
5197 |
ret_val =
|
|
|
5198 |
e1000_read_phy_reg(hw, dsp_reg_array[i],
|
|
|
5199 |
&phy_data);
|
|
|
5200 |
if (ret_val)
|
|
|
5201 |
return ret_val;
|
|
|
5202 |
|
|
|
5203 |
phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
|
|
|
5204 |
phy_data |= IGP01E1000_PHY_EDAC_SIGN_EXT_9_BITS;
|
|
|
5205 |
|
|
|
5206 |
ret_val =
|
|
|
5207 |
e1000_write_phy_reg(hw, dsp_reg_array[i],
|
|
|
5208 |
phy_data);
|
|
|
5209 |
if (ret_val)
|
|
|
5210 |
return ret_val;
|
|
|
5211 |
}
|
|
|
5212 |
|
|
|
5213 |
ret_val = e1000_write_phy_reg(hw, 0x0000,
|
|
|
5214 |
IGP01E1000_IEEE_RESTART_AUTONEG);
|
|
|
5215 |
if (ret_val)
|
|
|
5216 |
return ret_val;
|
|
|
5217 |
|
|
|
5218 |
mdelay(20);
|
|
|
5219 |
|
|
|
5220 |
/* Now enable the transmitter */
|
|
|
5221 |
ret_val =
|
|
|
5222 |
e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
|
|
|
5223 |
|
|
|
5224 |
if (ret_val)
|
|
|
5225 |
return ret_val;
|
|
|
5226 |
|
|
|
5227 |
hw->dsp_config_state = e1000_dsp_config_enabled;
|
|
|
5228 |
}
|
|
|
5229 |
|
|
|
5230 |
if (hw->ffe_config_state == e1000_ffe_config_active) {
|
|
|
5231 |
/* Save off the current value of register 0x2F5B to be restored at
|
|
|
5232 |
* the end of the routines. */
|
|
|
5233 |
ret_val =
|
|
|
5234 |
e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
|
|
|
5235 |
|
|
|
5236 |
if (ret_val)
|
|
|
5237 |
return ret_val;
|
|
|
5238 |
|
|
|
5239 |
/* Disable the PHY transmitter */
|
|
|
5240 |
ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
|
|
|
5241 |
|
|
|
5242 |
if (ret_val)
|
|
|
5243 |
return ret_val;
|
|
|
5244 |
|
|
|
5245 |
mdelay(20);
|
|
|
5246 |
|
|
|
5247 |
ret_val = e1000_write_phy_reg(hw, 0x0000,
|
|
|
5248 |
IGP01E1000_IEEE_FORCE_GIGA);
|
|
|
5249 |
if (ret_val)
|
|
|
5250 |
return ret_val;
|
|
|
5251 |
ret_val =
|
|
|
5252 |
e1000_write_phy_reg(hw, IGP01E1000_PHY_DSP_FFE,
|
|
|
5253 |
IGP01E1000_PHY_DSP_FFE_DEFAULT);
|
|
|
5254 |
if (ret_val)
|
|
|
5255 |
return ret_val;
|
|
|
5256 |
|
|
|
5257 |
ret_val = e1000_write_phy_reg(hw, 0x0000,
|
|
|
5258 |
IGP01E1000_IEEE_RESTART_AUTONEG);
|
|
|
5259 |
if (ret_val)
|
|
|
5260 |
return ret_val;
|
|
|
5261 |
|
|
|
5262 |
mdelay(20);
|
|
|
5263 |
|
|
|
5264 |
/* Now enable the transmitter */
|
|
|
5265 |
ret_val =
|
|
|
5266 |
e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
|
|
|
5267 |
|
|
|
5268 |
if (ret_val)
|
|
|
5269 |
return ret_val;
|
|
|
5270 |
|
|
|
5271 |
hw->ffe_config_state = e1000_ffe_config_enabled;
|
|
|
5272 |
}
|
|
|
5273 |
}
|
|
|
5274 |
return E1000_SUCCESS;
|
|
|
5275 |
}
|
|
|
5276 |
|
|
|
5277 |
/**
|
|
|
5278 |
* e1000_set_phy_mode - Set PHY to class A mode
|
|
|
5279 |
* @hw: Struct containing variables accessed by shared code
|
|
|
5280 |
*
|
|
|
5281 |
* Assumes the following operations will follow to enable the new class mode.
|
|
|
5282 |
* 1. Do a PHY soft reset
|
|
|
5283 |
* 2. Restart auto-negotiation or force link.
|
|
|
5284 |
*/
|
|
|
5285 |
static s32 e1000_set_phy_mode(struct e1000_hw *hw)
|
|
|
5286 |
{
|
|
|
5287 |
s32 ret_val;
|
|
|
5288 |
u16 eeprom_data;
|
|
|
5289 |
|
|
|
5290 |
e_dbg("e1000_set_phy_mode");
|
|
|
5291 |
|
|
|
5292 |
if ((hw->mac_type == e1000_82545_rev_3) &&
|
|
|
5293 |
(hw->media_type == e1000_media_type_copper)) {
|
|
|
5294 |
ret_val =
|
|
|
5295 |
e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD, 1,
|
|
|
5296 |
&eeprom_data);
|
|
|
5297 |
if (ret_val) {
|
|
|
5298 |
return ret_val;
|
|
|
5299 |
}
|
|
|
5300 |
|
|
|
5301 |
if ((eeprom_data != EEPROM_RESERVED_WORD) &&
|
|
|
5302 |
(eeprom_data & EEPROM_PHY_CLASS_A)) {
|
|
|
5303 |
ret_val =
|
|
|
5304 |
e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT,
|
|
|
5305 |
0x000B);
|
|
|
5306 |
if (ret_val)
|
|
|
5307 |
return ret_val;
|
|
|
5308 |
ret_val =
|
|
|
5309 |
e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL,
|
|
|
5310 |
0x8104);
|
|
|
5311 |
if (ret_val)
|
|
|
5312 |
return ret_val;
|
|
|
5313 |
|
|
|
5314 |
hw->phy_reset_disable = false;
|
|
|
5315 |
}
|
|
|
5316 |
}
|
|
|
5317 |
|
|
|
5318 |
return E1000_SUCCESS;
|
|
|
5319 |
}
|
|
|
5320 |
|
|
|
5321 |
/**
|
|
|
5322 |
* e1000_set_d3_lplu_state - set d3 link power state
|
|
|
5323 |
* @hw: Struct containing variables accessed by shared code
|
|
|
5324 |
* @active: true to enable lplu false to disable lplu.
|
|
|
5325 |
*
|
|
|
5326 |
* This function sets the lplu state according to the active flag. When
|
|
|
5327 |
* activating lplu this function also disables smart speed and vise versa.
|
|
|
5328 |
* lplu will not be activated unless the device autonegotiation advertisement
|
|
|
5329 |
* meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
|
|
|
5330 |
*
|
|
|
5331 |
* returns: - E1000_ERR_PHY if fail to read/write the PHY
|
|
|
5332 |
* E1000_SUCCESS at any other case.
|
|
|
5333 |
*/
|
|
|
5334 |
static s32 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active)
|
|
|
5335 |
{
|
|
|
5336 |
s32 ret_val;
|
|
|
5337 |
u16 phy_data;
|
|
|
5338 |
e_dbg("e1000_set_d3_lplu_state");
|
|
|
5339 |
|
|
|
5340 |
if (hw->phy_type != e1000_phy_igp)
|
|
|
5341 |
return E1000_SUCCESS;
|
|
|
5342 |
|
|
|
5343 |
/* During driver activity LPLU should not be used or it will attain link
|
|
|
5344 |
* from the lowest speeds starting from 10Mbps. The capability is used for
|
|
|
5345 |
* Dx transitions and states */
|
|
|
5346 |
if (hw->mac_type == e1000_82541_rev_2
|
|
|
5347 |
|| hw->mac_type == e1000_82547_rev_2) {
|
|
|
5348 |
ret_val =
|
|
|
5349 |
e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, &phy_data);
|
|
|
5350 |
if (ret_val)
|
|
|
5351 |
return ret_val;
|
|
|
5352 |
}
|
|
|
5353 |
|
|
|
5354 |
if (!active) {
|
|
|
5355 |
if (hw->mac_type == e1000_82541_rev_2 ||
|
|
|
5356 |
hw->mac_type == e1000_82547_rev_2) {
|
|
|
5357 |
phy_data &= ~IGP01E1000_GMII_FLEX_SPD;
|
|
|
5358 |
ret_val =
|
|
|
5359 |
e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
|
|
|
5360 |
phy_data);
|
|
|
5361 |
if (ret_val)
|
|
|
5362 |
return ret_val;
|
|
|
5363 |
}
|
|
|
5364 |
|
|
|
5365 |
/* LPLU and SmartSpeed are mutually exclusive. LPLU is used during
|
|
|
5366 |
* Dx states where the power conservation is most important. During
|
|
|
5367 |
* driver activity we should enable SmartSpeed, so performance is
|
|
|
5368 |
* maintained. */
|
|
|
5369 |
if (hw->smart_speed == e1000_smart_speed_on) {
|
|
|
5370 |
ret_val =
|
|
|
5371 |
e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
|
|
|
5372 |
&phy_data);
|
|
|
5373 |
if (ret_val)
|
|
|
5374 |
return ret_val;
|
|
|
5375 |
|
|
|
5376 |
phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
|
|
|
5377 |
ret_val =
|
|
|
5378 |
e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
|
|
|
5379 |
phy_data);
|
|
|
5380 |
if (ret_val)
|
|
|
5381 |
return ret_val;
|
|
|
5382 |
} else if (hw->smart_speed == e1000_smart_speed_off) {
|
|
|
5383 |
ret_val =
|
|
|
5384 |
e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
|
|
|
5385 |
&phy_data);
|
|
|
5386 |
if (ret_val)
|
|
|
5387 |
return ret_val;
|
|
|
5388 |
|
|
|
5389 |
phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
|
|
|
5390 |
ret_val =
|
|
|
5391 |
e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
|
|
|
5392 |
phy_data);
|
|
|
5393 |
if (ret_val)
|
|
|
5394 |
return ret_val;
|
|
|
5395 |
}
|
|
|
5396 |
} else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT)
|
|
|
5397 |
|| (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL)
|
|
|
5398 |
|| (hw->autoneg_advertised ==
|
|
|
5399 |
AUTONEG_ADVERTISE_10_100_ALL)) {
|
|
|
5400 |
|
|
|
5401 |
if (hw->mac_type == e1000_82541_rev_2 ||
|
|
|
5402 |
hw->mac_type == e1000_82547_rev_2) {
|
|
|
5403 |
phy_data |= IGP01E1000_GMII_FLEX_SPD;
|
|
|
5404 |
ret_val =
|
|
|
5405 |
e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
|
|
|
5406 |
phy_data);
|
|
|
5407 |
if (ret_val)
|
|
|
5408 |
return ret_val;
|
|
|
5409 |
}
|
|
|
5410 |
|
|
|
5411 |
/* When LPLU is enabled we should disable SmartSpeed */
|
|
|
5412 |
ret_val =
|
|
|
5413 |
e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
|
|
|
5414 |
&phy_data);
|
|
|
5415 |
if (ret_val)
|
|
|
5416 |
return ret_val;
|
|
|
5417 |
|
|
|
5418 |
phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
|
|
|
5419 |
ret_val =
|
|
|
5420 |
e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
|
|
|
5421 |
phy_data);
|
|
|
5422 |
if (ret_val)
|
|
|
5423 |
return ret_val;
|
|
|
5424 |
|
|
|
5425 |
}
|
|
|
5426 |
return E1000_SUCCESS;
|
|
|
5427 |
}
|
|
|
5428 |
|
|
|
5429 |
/**
|
|
|
5430 |
* e1000_set_vco_speed
|
|
|
5431 |
* @hw: Struct containing variables accessed by shared code
|
|
|
5432 |
*
|
|
|
5433 |
* Change VCO speed register to improve Bit Error Rate performance of SERDES.
|
|
|
5434 |
*/
|
|
|
5435 |
static s32 e1000_set_vco_speed(struct e1000_hw *hw)
|
|
|
5436 |
{
|
|
|
5437 |
s32 ret_val;
|
|
|
5438 |
u16 default_page = 0;
|
|
|
5439 |
u16 phy_data;
|
|
|
5440 |
|
|
|
5441 |
e_dbg("e1000_set_vco_speed");
|
|
|
5442 |
|
|
|
5443 |
switch (hw->mac_type) {
|
|
|
5444 |
case e1000_82545_rev_3:
|
|
|
5445 |
case e1000_82546_rev_3:
|
|
|
5446 |
break;
|
|
|
5447 |
default:
|
|
|
5448 |
return E1000_SUCCESS;
|
|
|
5449 |
}
|
|
|
5450 |
|
|
|
5451 |
/* Set PHY register 30, page 5, bit 8 to 0 */
|
|
|
5452 |
|
|
|
5453 |
ret_val =
|
|
|
5454 |
e1000_read_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, &default_page);
|
|
|
5455 |
if (ret_val)
|
|
|
5456 |
return ret_val;
|
|
|
5457 |
|
|
|
5458 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0005);
|
|
|
5459 |
if (ret_val)
|
|
|
5460 |
return ret_val;
|
|
|
5461 |
|
|
|
5462 |
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data);
|
|
|
5463 |
if (ret_val)
|
|
|
5464 |
return ret_val;
|
|
|
5465 |
|
|
|
5466 |
phy_data &= ~M88E1000_PHY_VCO_REG_BIT8;
|
|
|
5467 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data);
|
|
|
5468 |
if (ret_val)
|
|
|
5469 |
return ret_val;
|
|
|
5470 |
|
|
|
5471 |
/* Set PHY register 30, page 4, bit 11 to 1 */
|
|
|
5472 |
|
|
|
5473 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0004);
|
|
|
5474 |
if (ret_val)
|
|
|
5475 |
return ret_val;
|
|
|
5476 |
|
|
|
5477 |
ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data);
|
|
|
5478 |
if (ret_val)
|
|
|
5479 |
return ret_val;
|
|
|
5480 |
|
|
|
5481 |
phy_data |= M88E1000_PHY_VCO_REG_BIT11;
|
|
|
5482 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data);
|
|
|
5483 |
if (ret_val)
|
|
|
5484 |
return ret_val;
|
|
|
5485 |
|
|
|
5486 |
ret_val =
|
|
|
5487 |
e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, default_page);
|
|
|
5488 |
if (ret_val)
|
|
|
5489 |
return ret_val;
|
|
|
5490 |
|
|
|
5491 |
return E1000_SUCCESS;
|
|
|
5492 |
}
|
|
|
5493 |
|
|
|
5494 |
|
|
|
5495 |
/**
|
|
|
5496 |
* e1000_enable_mng_pass_thru - check for bmc pass through
|
|
|
5497 |
* @hw: Struct containing variables accessed by shared code
|
|
|
5498 |
*
|
|
|
5499 |
* Verifies the hardware needs to allow ARPs to be processed by the host
|
|
|
5500 |
* returns: - true/false
|
|
|
5501 |
*/
|
|
|
5502 |
u32 e1000_enable_mng_pass_thru(struct e1000_hw *hw)
|
|
|
5503 |
{
|
|
|
5504 |
u32 manc;
|
|
|
5505 |
|
|
|
5506 |
if (hw->asf_firmware_present) {
|
|
|
5507 |
manc = er32(MANC);
|
|
|
5508 |
|
|
|
5509 |
if (!(manc & E1000_MANC_RCV_TCO_EN) ||
|
|
|
5510 |
!(manc & E1000_MANC_EN_MAC_ADDR_FILTER))
|
|
|
5511 |
return false;
|
|
|
5512 |
if ((manc & E1000_MANC_SMBUS_EN) && !(manc & E1000_MANC_ASF_EN))
|
|
|
5513 |
return true;
|
|
|
5514 |
}
|
|
|
5515 |
return false;
|
|
|
5516 |
}
|
|
|
5517 |
|
|
|
5518 |
static s32 e1000_polarity_reversal_workaround(struct e1000_hw *hw)
|
|
|
5519 |
{
|
|
|
5520 |
s32 ret_val;
|
|
|
5521 |
u16 mii_status_reg;
|
|
|
5522 |
u16 i;
|
|
|
5523 |
|
|
|
5524 |
/* Polarity reversal workaround for forced 10F/10H links. */
|
|
|
5525 |
|
|
|
5526 |
/* Disable the transmitter on the PHY */
|
|
|
5527 |
|
|
|
5528 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019);
|
|
|
5529 |
if (ret_val)
|
|
|
5530 |
return ret_val;
|
|
|
5531 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFFF);
|
|
|
5532 |
if (ret_val)
|
|
|
5533 |
return ret_val;
|
|
|
5534 |
|
|
|
5535 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000);
|
|
|
5536 |
if (ret_val)
|
|
|
5537 |
return ret_val;
|
|
|
5538 |
|
|
|
5539 |
/* This loop will early-out if the NO link condition has been met. */
|
|
|
5540 |
for (i = PHY_FORCE_TIME; i > 0; i--) {
|
|
|
5541 |
/* Read the MII Status Register and wait for Link Status bit
|
|
|
5542 |
* to be clear.
|
|
|
5543 |
*/
|
|
|
5544 |
|
|
|
5545 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
5546 |
if (ret_val)
|
|
|
5547 |
return ret_val;
|
|
|
5548 |
|
|
|
5549 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
5550 |
if (ret_val)
|
|
|
5551 |
return ret_val;
|
|
|
5552 |
|
|
|
5553 |
if ((mii_status_reg & ~MII_SR_LINK_STATUS) == 0)
|
|
|
5554 |
break;
|
|
|
5555 |
mdelay(100);
|
|
|
5556 |
}
|
|
|
5557 |
|
|
|
5558 |
/* Recommended delay time after link has been lost */
|
|
|
5559 |
mdelay(1000);
|
|
|
5560 |
|
|
|
5561 |
/* Now we will re-enable th transmitter on the PHY */
|
|
|
5562 |
|
|
|
5563 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019);
|
|
|
5564 |
if (ret_val)
|
|
|
5565 |
return ret_val;
|
|
|
5566 |
mdelay(50);
|
|
|
5567 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFF0);
|
|
|
5568 |
if (ret_val)
|
|
|
5569 |
return ret_val;
|
|
|
5570 |
mdelay(50);
|
|
|
5571 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFF00);
|
|
|
5572 |
if (ret_val)
|
|
|
5573 |
return ret_val;
|
|
|
5574 |
mdelay(50);
|
|
|
5575 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x0000);
|
|
|
5576 |
if (ret_val)
|
|
|
5577 |
return ret_val;
|
|
|
5578 |
|
|
|
5579 |
ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000);
|
|
|
5580 |
if (ret_val)
|
|
|
5581 |
return ret_val;
|
|
|
5582 |
|
|
|
5583 |
/* This loop will early-out if the link condition has been met. */
|
|
|
5584 |
for (i = PHY_FORCE_TIME; i > 0; i--) {
|
|
|
5585 |
/* Read the MII Status Register and wait for Link Status bit
|
|
|
5586 |
* to be set.
|
|
|
5587 |
*/
|
|
|
5588 |
|
|
|
5589 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
5590 |
if (ret_val)
|
|
|
5591 |
return ret_val;
|
|
|
5592 |
|
|
|
5593 |
ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
|
|
|
5594 |
if (ret_val)
|
|
|
5595 |
return ret_val;
|
|
|
5596 |
|
|
|
5597 |
if (mii_status_reg & MII_SR_LINK_STATUS)
|
|
|
5598 |
break;
|
|
|
5599 |
mdelay(100);
|
|
|
5600 |
}
|
|
|
5601 |
return E1000_SUCCESS;
|
|
|
5602 |
}
|
|
|
5603 |
|
|
|
5604 |
/**
|
|
|
5605 |
* e1000_get_auto_rd_done
|
|
|
5606 |
* @hw: Struct containing variables accessed by shared code
|
|
|
5607 |
*
|
|
|
5608 |
* Check for EEPROM Auto Read bit done.
|
|
|
5609 |
* returns: - E1000_ERR_RESET if fail to reset MAC
|
|
|
5610 |
* E1000_SUCCESS at any other case.
|
|
|
5611 |
*/
|
|
|
5612 |
static s32 e1000_get_auto_rd_done(struct e1000_hw *hw)
|
|
|
5613 |
{
|
|
|
5614 |
e_dbg("e1000_get_auto_rd_done");
|
|
|
5615 |
msleep(5);
|
|
|
5616 |
return E1000_SUCCESS;
|
|
|
5617 |
}
|
|
|
5618 |
|
|
|
5619 |
/**
|
|
|
5620 |
* e1000_get_phy_cfg_done
|
|
|
5621 |
* @hw: Struct containing variables accessed by shared code
|
|
|
5622 |
*
|
|
|
5623 |
* Checks if the PHY configuration is done
|
|
|
5624 |
* returns: - E1000_ERR_RESET if fail to reset MAC
|
|
|
5625 |
* E1000_SUCCESS at any other case.
|
|
|
5626 |
*/
|
|
|
5627 |
static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw)
|
|
|
5628 |
{
|
|
|
5629 |
e_dbg("e1000_get_phy_cfg_done");
|
|
|
5630 |
mdelay(10);
|
|
|
5631 |
return E1000_SUCCESS;
|
|
|
5632 |
}
|