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linux/drivers/net/ethernet/atheros/alx/hw.c
Sabrina Dubroca 5665dc6488 alx: add stats update function 
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-01-11 20:52:58 -08:00

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31 KiB
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/*
* Copyright (c) 2013 Johannes Berg <johannes@sipsolutions.net>
*
* This file is free software: you may copy, redistribute and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 2 of the License, or (at your
* option) any later version.
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Copyright (c) 2012 Qualcomm Atheros, Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/mdio.h>
#include "reg.h"
#include "hw.h"
static inline bool alx_is_rev_a(u8 rev)
{
return rev == ALX_REV_A0 || rev == ALX_REV_A1;
}
static int alx_wait_mdio_idle(struct alx_hw *hw)
{
u32 val;
int i;
for (i = 0; i < ALX_MDIO_MAX_AC_TO; i++) {
val = alx_read_mem32(hw, ALX_MDIO);
if (!(val & ALX_MDIO_BUSY))
return 0;
udelay(10);
}
return -ETIMEDOUT;
}
static int alx_read_phy_core(struct alx_hw *hw, bool ext, u8 dev,
u16 reg, u16 *phy_data)
{
u32 val, clk_sel;
int err;
*phy_data = 0;
/* use slow clock when it's in hibernation status */
clk_sel = hw->link_speed != SPEED_UNKNOWN ?
ALX_MDIO_CLK_SEL_25MD4 :
ALX_MDIO_CLK_SEL_25MD128;
if (ext) {
val = dev << ALX_MDIO_EXTN_DEVAD_SHIFT |
reg << ALX_MDIO_EXTN_REG_SHIFT;
alx_write_mem32(hw, ALX_MDIO_EXTN, val);
val = ALX_MDIO_SPRES_PRMBL | ALX_MDIO_START |
ALX_MDIO_MODE_EXT | ALX_MDIO_OP_READ |
clk_sel << ALX_MDIO_CLK_SEL_SHIFT;
} else {
val = ALX_MDIO_SPRES_PRMBL |
clk_sel << ALX_MDIO_CLK_SEL_SHIFT |
reg << ALX_MDIO_REG_SHIFT |
ALX_MDIO_START | ALX_MDIO_OP_READ;
}
alx_write_mem32(hw, ALX_MDIO, val);
err = alx_wait_mdio_idle(hw);
if (err)
return err;
val = alx_read_mem32(hw, ALX_MDIO);
*phy_data = ALX_GET_FIELD(val, ALX_MDIO_DATA);
return 0;
}
static int alx_write_phy_core(struct alx_hw *hw, bool ext, u8 dev,
u16 reg, u16 phy_data)
{
u32 val, clk_sel;
/* use slow clock when it's in hibernation status */
clk_sel = hw->link_speed != SPEED_UNKNOWN ?
ALX_MDIO_CLK_SEL_25MD4 :
ALX_MDIO_CLK_SEL_25MD128;
if (ext) {
val = dev << ALX_MDIO_EXTN_DEVAD_SHIFT |
reg << ALX_MDIO_EXTN_REG_SHIFT;
alx_write_mem32(hw, ALX_MDIO_EXTN, val);
val = ALX_MDIO_SPRES_PRMBL |
clk_sel << ALX_MDIO_CLK_SEL_SHIFT |
phy_data << ALX_MDIO_DATA_SHIFT |
ALX_MDIO_START | ALX_MDIO_MODE_EXT;
} else {
val = ALX_MDIO_SPRES_PRMBL |
clk_sel << ALX_MDIO_CLK_SEL_SHIFT |
reg << ALX_MDIO_REG_SHIFT |
phy_data << ALX_MDIO_DATA_SHIFT |
ALX_MDIO_START;
}
alx_write_mem32(hw, ALX_MDIO, val);
return alx_wait_mdio_idle(hw);
}
static int __alx_read_phy_reg(struct alx_hw *hw, u16 reg, u16 *phy_data)
{
return alx_read_phy_core(hw, false, 0, reg, phy_data);
}
static int __alx_write_phy_reg(struct alx_hw *hw, u16 reg, u16 phy_data)
{
return alx_write_phy_core(hw, false, 0, reg, phy_data);
}
static int __alx_read_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 *pdata)
{
return alx_read_phy_core(hw, true, dev, reg, pdata);
}
static int __alx_write_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 data)
{
return alx_write_phy_core(hw, true, dev, reg, data);
}
static int __alx_read_phy_dbg(struct alx_hw *hw, u16 reg, u16 *pdata)
{
int err;
err = __alx_write_phy_reg(hw, ALX_MII_DBG_ADDR, reg);
if (err)
return err;
return __alx_read_phy_reg(hw, ALX_MII_DBG_DATA, pdata);
}
static int __alx_write_phy_dbg(struct alx_hw *hw, u16 reg, u16 data)
{
int err;
err = __alx_write_phy_reg(hw, ALX_MII_DBG_ADDR, reg);
if (err)
return err;
return __alx_write_phy_reg(hw, ALX_MII_DBG_DATA, data);
}
int alx_read_phy_reg(struct alx_hw *hw, u16 reg, u16 *phy_data)
{
int err;
spin_lock(&hw->mdio_lock);
err = __alx_read_phy_reg(hw, reg, phy_data);
spin_unlock(&hw->mdio_lock);
return err;
}
int alx_write_phy_reg(struct alx_hw *hw, u16 reg, u16 phy_data)
{
int err;
spin_lock(&hw->mdio_lock);
err = __alx_write_phy_reg(hw, reg, phy_data);
spin_unlock(&hw->mdio_lock);
return err;
}
int alx_read_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 *pdata)
{
int err;
spin_lock(&hw->mdio_lock);
err = __alx_read_phy_ext(hw, dev, reg, pdata);
spin_unlock(&hw->mdio_lock);
return err;
}
int alx_write_phy_ext(struct alx_hw *hw, u8 dev, u16 reg, u16 data)
{
int err;
spin_lock(&hw->mdio_lock);
err = __alx_write_phy_ext(hw, dev, reg, data);
spin_unlock(&hw->mdio_lock);
return err;
}
static int alx_read_phy_dbg(struct alx_hw *hw, u16 reg, u16 *pdata)
{
int err;
spin_lock(&hw->mdio_lock);
err = __alx_read_phy_dbg(hw, reg, pdata);
spin_unlock(&hw->mdio_lock);
return err;
}
static int alx_write_phy_dbg(struct alx_hw *hw, u16 reg, u16 data)
{
int err;
spin_lock(&hw->mdio_lock);
err = __alx_write_phy_dbg(hw, reg, data);
spin_unlock(&hw->mdio_lock);
return err;
}
static u16 alx_get_phy_config(struct alx_hw *hw)
{
u32 val;
u16 phy_val;
val = alx_read_mem32(hw, ALX_PHY_CTRL);
/* phy in reset */
if ((val & ALX_PHY_CTRL_DSPRST_OUT) == 0)
return ALX_DRV_PHY_UNKNOWN;
val = alx_read_mem32(hw, ALX_DRV);
val = ALX_GET_FIELD(val, ALX_DRV_PHY);
if (ALX_DRV_PHY_UNKNOWN == val)
return ALX_DRV_PHY_UNKNOWN;
alx_read_phy_reg(hw, ALX_MII_DBG_ADDR, &phy_val);
if (ALX_PHY_INITED == phy_val)
return val;
return ALX_DRV_PHY_UNKNOWN;
}
static bool alx_wait_reg(struct alx_hw *hw, u32 reg, u32 wait, u32 *val)
{
u32 read;
int i;
for (i = 0; i < ALX_SLD_MAX_TO; i++) {
read = alx_read_mem32(hw, reg);
if ((read & wait) == 0) {
if (val)
*val = read;
return true;
}
mdelay(1);
}
return false;
}
static bool alx_read_macaddr(struct alx_hw *hw, u8 *addr)
{
u32 mac0, mac1;
mac0 = alx_read_mem32(hw, ALX_STAD0);
mac1 = alx_read_mem32(hw, ALX_STAD1);
/* addr should be big-endian */
put_unaligned(cpu_to_be32(mac0), (__be32 *)(addr + 2));
put_unaligned(cpu_to_be16(mac1), (__be16 *)addr);
return is_valid_ether_addr(addr);
}
int alx_get_perm_macaddr(struct alx_hw *hw, u8 *addr)
{
u32 val;
/* try to get it from register first */
if (alx_read_macaddr(hw, addr))
return 0;
/* try to load from efuse */
if (!alx_wait_reg(hw, ALX_SLD, ALX_SLD_STAT | ALX_SLD_START, &val))
return -EIO;
alx_write_mem32(hw, ALX_SLD, val | ALX_SLD_START);
if (!alx_wait_reg(hw, ALX_SLD, ALX_SLD_START, NULL))
return -EIO;
if (alx_read_macaddr(hw, addr))
return 0;
/* try to load from flash/eeprom (if present) */
val = alx_read_mem32(hw, ALX_EFLD);
if (val & (ALX_EFLD_F_EXIST | ALX_EFLD_E_EXIST)) {
if (!alx_wait_reg(hw, ALX_EFLD,
ALX_EFLD_STAT | ALX_EFLD_START, &val))
return -EIO;
alx_write_mem32(hw, ALX_EFLD, val | ALX_EFLD_START);
if (!alx_wait_reg(hw, ALX_EFLD, ALX_EFLD_START, NULL))
return -EIO;
if (alx_read_macaddr(hw, addr))
return 0;
}
return -EIO;
}
void alx_set_macaddr(struct alx_hw *hw, const u8 *addr)
{
u32 val;
/* for example: 00-0B-6A-F6-00-DC * STAD0=6AF600DC, STAD1=000B */
val = be32_to_cpu(get_unaligned((__be32 *)(addr + 2)));
alx_write_mem32(hw, ALX_STAD0, val);
val = be16_to_cpu(get_unaligned((__be16 *)addr));
alx_write_mem32(hw, ALX_STAD1, val);
}
static void alx_reset_osc(struct alx_hw *hw, u8 rev)
{
u32 val, val2;
/* clear Internal OSC settings, switching OSC by hw itself */
val = alx_read_mem32(hw, ALX_MISC3);
alx_write_mem32(hw, ALX_MISC3,
(val & ~ALX_MISC3_25M_BY_SW) |
ALX_MISC3_25M_NOTO_INTNL);
/* 25M clk from chipset may be unstable 1s after de-assert of
* PERST, driver need re-calibrate before enter Sleep for WoL
*/
val = alx_read_mem32(hw, ALX_MISC);
if (rev >= ALX_REV_B0) {
/* restore over current protection def-val,
* this val could be reset by MAC-RST
*/
ALX_SET_FIELD(val, ALX_MISC_PSW_OCP, ALX_MISC_PSW_OCP_DEF);
/* a 0->1 change will update the internal val of osc */
val &= ~ALX_MISC_INTNLOSC_OPEN;
alx_write_mem32(hw, ALX_MISC, val);
alx_write_mem32(hw, ALX_MISC, val | ALX_MISC_INTNLOSC_OPEN);
/* hw will automatically dis OSC after cab. */
val2 = alx_read_mem32(hw, ALX_MSIC2);
val2 &= ~ALX_MSIC2_CALB_START;
alx_write_mem32(hw, ALX_MSIC2, val2);
alx_write_mem32(hw, ALX_MSIC2, val2 | ALX_MSIC2_CALB_START);
} else {
val &= ~ALX_MISC_INTNLOSC_OPEN;
/* disable isolate for rev A devices */
if (alx_is_rev_a(rev))
val &= ~ALX_MISC_ISO_EN;
alx_write_mem32(hw, ALX_MISC, val | ALX_MISC_INTNLOSC_OPEN);
alx_write_mem32(hw, ALX_MISC, val);
}
udelay(20);
}
static int alx_stop_mac(struct alx_hw *hw)
{
u32 rxq, txq, val;
u16 i;
rxq = alx_read_mem32(hw, ALX_RXQ0);
alx_write_mem32(hw, ALX_RXQ0, rxq & ~ALX_RXQ0_EN);
txq = alx_read_mem32(hw, ALX_TXQ0);
alx_write_mem32(hw, ALX_TXQ0, txq & ~ALX_TXQ0_EN);
udelay(40);
hw->rx_ctrl &= ~(ALX_MAC_CTRL_RX_EN | ALX_MAC_CTRL_TX_EN);
alx_write_mem32(hw, ALX_MAC_CTRL, hw->rx_ctrl);
for (i = 0; i < ALX_DMA_MAC_RST_TO; i++) {
val = alx_read_mem32(hw, ALX_MAC_STS);
if (!(val & ALX_MAC_STS_IDLE))
return 0;
udelay(10);
}
return -ETIMEDOUT;
}
int alx_reset_mac(struct alx_hw *hw)
{
u32 val, pmctrl;
int i, ret;
u8 rev;
bool a_cr;
pmctrl = 0;
rev = alx_hw_revision(hw);
a_cr = alx_is_rev_a(rev) && alx_hw_with_cr(hw);
/* disable all interrupts, RXQ/TXQ */
alx_write_mem32(hw, ALX_MSIX_MASK, 0xFFFFFFFF);
alx_write_mem32(hw, ALX_IMR, 0);
alx_write_mem32(hw, ALX_ISR, ALX_ISR_DIS);
ret = alx_stop_mac(hw);
if (ret)
return ret;
/* mac reset workaroud */
alx_write_mem32(hw, ALX_RFD_PIDX, 1);
/* dis l0s/l1 before mac reset */
if (a_cr) {
pmctrl = alx_read_mem32(hw, ALX_PMCTRL);
if (pmctrl & (ALX_PMCTRL_L1_EN | ALX_PMCTRL_L0S_EN))
alx_write_mem32(hw, ALX_PMCTRL,
pmctrl & ~(ALX_PMCTRL_L1_EN |
ALX_PMCTRL_L0S_EN));
}
/* reset whole mac safely */
val = alx_read_mem32(hw, ALX_MASTER);
alx_write_mem32(hw, ALX_MASTER,
val | ALX_MASTER_DMA_MAC_RST | ALX_MASTER_OOB_DIS);
/* make sure it's real idle */
udelay(10);
for (i = 0; i < ALX_DMA_MAC_RST_TO; i++) {
val = alx_read_mem32(hw, ALX_RFD_PIDX);
if (val == 0)
break;
udelay(10);
}
for (; i < ALX_DMA_MAC_RST_TO; i++) {
val = alx_read_mem32(hw, ALX_MASTER);
if ((val & ALX_MASTER_DMA_MAC_RST) == 0)
break;
udelay(10);
}
if (i == ALX_DMA_MAC_RST_TO)
return -EIO;
udelay(10);
if (a_cr) {
alx_write_mem32(hw, ALX_MASTER, val | ALX_MASTER_PCLKSEL_SRDS);
/* restore l0s / l1 */
if (pmctrl & (ALX_PMCTRL_L1_EN | ALX_PMCTRL_L0S_EN))
alx_write_mem32(hw, ALX_PMCTRL, pmctrl);
}
alx_reset_osc(hw, rev);
/* clear Internal OSC settings, switching OSC by hw itself,
* disable isolate for rev A devices
*/
val = alx_read_mem32(hw, ALX_MISC3);
alx_write_mem32(hw, ALX_MISC3,
(val & ~ALX_MISC3_25M_BY_SW) |
ALX_MISC3_25M_NOTO_INTNL);
val = alx_read_mem32(hw, ALX_MISC);
val &= ~ALX_MISC_INTNLOSC_OPEN;
if (alx_is_rev_a(rev))
val &= ~ALX_MISC_ISO_EN;
alx_write_mem32(hw, ALX_MISC, val);
udelay(20);
/* driver control speed/duplex, hash-alg */
alx_write_mem32(hw, ALX_MAC_CTRL, hw->rx_ctrl);
val = alx_read_mem32(hw, ALX_SERDES);
alx_write_mem32(hw, ALX_SERDES,
val | ALX_SERDES_MACCLK_SLWDWN |
ALX_SERDES_PHYCLK_SLWDWN);
return 0;
}
void alx_reset_phy(struct alx_hw *hw)
{
int i;
u32 val;
u16 phy_val;
/* (DSP)reset PHY core */
val = alx_read_mem32(hw, ALX_PHY_CTRL);
val &= ~(ALX_PHY_CTRL_DSPRST_OUT | ALX_PHY_CTRL_IDDQ |
ALX_PHY_CTRL_GATE_25M | ALX_PHY_CTRL_POWER_DOWN |
ALX_PHY_CTRL_CLS);
val |= ALX_PHY_CTRL_RST_ANALOG;
val |= (ALX_PHY_CTRL_HIB_PULSE | ALX_PHY_CTRL_HIB_EN);
alx_write_mem32(hw, ALX_PHY_CTRL, val);
udelay(10);
alx_write_mem32(hw, ALX_PHY_CTRL, val | ALX_PHY_CTRL_DSPRST_OUT);
for (i = 0; i < ALX_PHY_CTRL_DSPRST_TO; i++)
udelay(10);
/* phy power saving & hib */
alx_write_phy_dbg(hw, ALX_MIIDBG_LEGCYPS, ALX_LEGCYPS_DEF);
alx_write_phy_dbg(hw, ALX_MIIDBG_SYSMODCTRL,
ALX_SYSMODCTRL_IECHOADJ_DEF);
alx_write_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_VDRVBIAS,
ALX_VDRVBIAS_DEF);
/* EEE advertisement */
val = alx_read_mem32(hw, ALX_LPI_CTRL);
alx_write_mem32(hw, ALX_LPI_CTRL, val & ~ALX_LPI_CTRL_EN);
alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_LOCAL_EEEADV, 0);
/* phy power saving */
alx_write_phy_dbg(hw, ALX_MIIDBG_TST10BTCFG, ALX_TST10BTCFG_DEF);
alx_write_phy_dbg(hw, ALX_MIIDBG_SRDSYSMOD, ALX_SRDSYSMOD_DEF);
alx_write_phy_dbg(hw, ALX_MIIDBG_TST100BTCFG, ALX_TST100BTCFG_DEF);
alx_write_phy_dbg(hw, ALX_MIIDBG_ANACTRL, ALX_ANACTRL_DEF);
alx_read_phy_dbg(hw, ALX_MIIDBG_GREENCFG2, &phy_val);
alx_write_phy_dbg(hw, ALX_MIIDBG_GREENCFG2,
phy_val & ~ALX_GREENCFG2_GATE_DFSE_EN);
/* rtl8139c, 120m issue */
alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_NLP78,
ALX_MIIEXT_NLP78_120M_DEF);
alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_S3DIG10,
ALX_MIIEXT_S3DIG10_DEF);
if (hw->lnk_patch) {
/* Turn off half amplitude */
alx_read_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL3,
&phy_val);
alx_write_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL3,
phy_val | ALX_CLDCTRL3_BP_CABLE1TH_DET_GT);
/* Turn off Green feature */
alx_read_phy_dbg(hw, ALX_MIIDBG_GREENCFG2, &phy_val);
alx_write_phy_dbg(hw, ALX_MIIDBG_GREENCFG2,
phy_val | ALX_GREENCFG2_BP_GREEN);
/* Turn off half Bias */
alx_read_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL5,
&phy_val);
alx_write_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL5,
phy_val | ALX_CLDCTRL5_BP_VD_HLFBIAS);
}
/* set phy interrupt mask */
alx_write_phy_reg(hw, ALX_MII_IER, ALX_IER_LINK_UP | ALX_IER_LINK_DOWN);
}
#define ALX_PCI_CMD (PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO)
void alx_reset_pcie(struct alx_hw *hw)
{
u8 rev = alx_hw_revision(hw);
u32 val;
u16 val16;
/* Workaround for PCI problem when BIOS sets MMRBC incorrectly. */
pci_read_config_word(hw->pdev, PCI_COMMAND, &val16);
if (!(val16 & ALX_PCI_CMD) || (val16 & PCI_COMMAND_INTX_DISABLE)) {
val16 = (val16 | ALX_PCI_CMD) & ~PCI_COMMAND_INTX_DISABLE;
pci_write_config_word(hw->pdev, PCI_COMMAND, val16);
}
/* clear WoL setting/status */
val = alx_read_mem32(hw, ALX_WOL0);
alx_write_mem32(hw, ALX_WOL0, 0);
val = alx_read_mem32(hw, ALX_PDLL_TRNS1);
alx_write_mem32(hw, ALX_PDLL_TRNS1, val & ~ALX_PDLL_TRNS1_D3PLLOFF_EN);
/* mask some pcie error bits */
val = alx_read_mem32(hw, ALX_UE_SVRT);
val &= ~(ALX_UE_SVRT_DLPROTERR | ALX_UE_SVRT_FCPROTERR);
alx_write_mem32(hw, ALX_UE_SVRT, val);
/* wol 25M & pclk */
val = alx_read_mem32(hw, ALX_MASTER);
if (alx_is_rev_a(rev) && alx_hw_with_cr(hw)) {
if ((val & ALX_MASTER_WAKEN_25M) == 0 ||
(val & ALX_MASTER_PCLKSEL_SRDS) == 0)
alx_write_mem32(hw, ALX_MASTER,
val | ALX_MASTER_PCLKSEL_SRDS |
ALX_MASTER_WAKEN_25M);
} else {
if ((val & ALX_MASTER_WAKEN_25M) == 0 ||
(val & ALX_MASTER_PCLKSEL_SRDS) != 0)
alx_write_mem32(hw, ALX_MASTER,
(val & ~ALX_MASTER_PCLKSEL_SRDS) |
ALX_MASTER_WAKEN_25M);
}
/* ASPM setting */
alx_enable_aspm(hw, true, true);
udelay(10);
}
void alx_start_mac(struct alx_hw *hw)
{
u32 mac, txq, rxq;
rxq = alx_read_mem32(hw, ALX_RXQ0);
alx_write_mem32(hw, ALX_RXQ0, rxq | ALX_RXQ0_EN);
txq = alx_read_mem32(hw, ALX_TXQ0);
alx_write_mem32(hw, ALX_TXQ0, txq | ALX_TXQ0_EN);
mac = hw->rx_ctrl;
if (hw->duplex == DUPLEX_FULL)
mac |= ALX_MAC_CTRL_FULLD;
else
mac &= ~ALX_MAC_CTRL_FULLD;
ALX_SET_FIELD(mac, ALX_MAC_CTRL_SPEED,
hw->link_speed == SPEED_1000 ? ALX_MAC_CTRL_SPEED_1000 :
ALX_MAC_CTRL_SPEED_10_100);
mac |= ALX_MAC_CTRL_TX_EN | ALX_MAC_CTRL_RX_EN;
hw->rx_ctrl = mac;
alx_write_mem32(hw, ALX_MAC_CTRL, mac);
}
void alx_cfg_mac_flowcontrol(struct alx_hw *hw, u8 fc)
{
if (fc & ALX_FC_RX)
hw->rx_ctrl |= ALX_MAC_CTRL_RXFC_EN;
else
hw->rx_ctrl &= ~ALX_MAC_CTRL_RXFC_EN;
if (fc & ALX_FC_TX)
hw->rx_ctrl |= ALX_MAC_CTRL_TXFC_EN;
else
hw->rx_ctrl &= ~ALX_MAC_CTRL_TXFC_EN;
alx_write_mem32(hw, ALX_MAC_CTRL, hw->rx_ctrl);
}
void alx_enable_aspm(struct alx_hw *hw, bool l0s_en, bool l1_en)
{
u32 pmctrl;
u8 rev = alx_hw_revision(hw);
pmctrl = alx_read_mem32(hw, ALX_PMCTRL);
ALX_SET_FIELD(pmctrl, ALX_PMCTRL_LCKDET_TIMER,
ALX_PMCTRL_LCKDET_TIMER_DEF);
pmctrl |= ALX_PMCTRL_RCVR_WT_1US |
ALX_PMCTRL_L1_CLKSW_EN |
ALX_PMCTRL_L1_SRDSRX_PWD;
ALX_SET_FIELD(pmctrl, ALX_PMCTRL_L1REQ_TO, ALX_PMCTRL_L1REG_TO_DEF);
ALX_SET_FIELD(pmctrl, ALX_PMCTRL_L1_TIMER, ALX_PMCTRL_L1_TIMER_16US);
pmctrl &= ~(ALX_PMCTRL_L1_SRDS_EN |
ALX_PMCTRL_L1_SRDSPLL_EN |
ALX_PMCTRL_L1_BUFSRX_EN |
ALX_PMCTRL_SADLY_EN |
ALX_PMCTRL_HOTRST_WTEN|
ALX_PMCTRL_L0S_EN |
ALX_PMCTRL_L1_EN |
ALX_PMCTRL_ASPM_FCEN |
ALX_PMCTRL_TXL1_AFTER_L0S |
ALX_PMCTRL_RXL1_AFTER_L0S);
if (alx_is_rev_a(rev) && alx_hw_with_cr(hw))
pmctrl |= ALX_PMCTRL_L1_SRDS_EN | ALX_PMCTRL_L1_SRDSPLL_EN;
if (l0s_en)
pmctrl |= (ALX_PMCTRL_L0S_EN | ALX_PMCTRL_ASPM_FCEN);
if (l1_en)
pmctrl |= (ALX_PMCTRL_L1_EN | ALX_PMCTRL_ASPM_FCEN);
alx_write_mem32(hw, ALX_PMCTRL, pmctrl);
}
static u32 ethadv_to_hw_cfg(struct alx_hw *hw, u32 ethadv_cfg)
{
u32 cfg = 0;
if (ethadv_cfg & ADVERTISED_Autoneg) {
cfg |= ALX_DRV_PHY_AUTO;
if (ethadv_cfg & ADVERTISED_10baseT_Half)
cfg |= ALX_DRV_PHY_10;
if (ethadv_cfg & ADVERTISED_10baseT_Full)
cfg |= ALX_DRV_PHY_10 | ALX_DRV_PHY_DUPLEX;
if (ethadv_cfg & ADVERTISED_100baseT_Half)
cfg |= ALX_DRV_PHY_100;
if (ethadv_cfg & ADVERTISED_100baseT_Full)
cfg |= ALX_DRV_PHY_100 | ALX_DRV_PHY_DUPLEX;
if (ethadv_cfg & ADVERTISED_1000baseT_Half)
cfg |= ALX_DRV_PHY_1000;
if (ethadv_cfg & ADVERTISED_1000baseT_Full)
cfg |= ALX_DRV_PHY_100 | ALX_DRV_PHY_DUPLEX;
if (ethadv_cfg & ADVERTISED_Pause)
cfg |= ADVERTISE_PAUSE_CAP;
if (ethadv_cfg & ADVERTISED_Asym_Pause)
cfg |= ADVERTISE_PAUSE_ASYM;
} else {
switch (ethadv_cfg) {
case ADVERTISED_10baseT_Half:
cfg |= ALX_DRV_PHY_10;
break;
case ADVERTISED_100baseT_Half:
cfg |= ALX_DRV_PHY_100;
break;
case ADVERTISED_10baseT_Full:
cfg |= ALX_DRV_PHY_10 | ALX_DRV_PHY_DUPLEX;
break;
case ADVERTISED_100baseT_Full:
cfg |= ALX_DRV_PHY_100 | ALX_DRV_PHY_DUPLEX;
break;
}
}
return cfg;
}
int alx_setup_speed_duplex(struct alx_hw *hw, u32 ethadv, u8 flowctrl)
{
u16 adv, giga, cr;
u32 val;
int err = 0;
alx_write_phy_reg(hw, ALX_MII_DBG_ADDR, 0);
val = alx_read_mem32(hw, ALX_DRV);
ALX_SET_FIELD(val, ALX_DRV_PHY, 0);
if (ethadv & ADVERTISED_Autoneg) {
adv = ADVERTISE_CSMA;
adv |= ethtool_adv_to_mii_adv_t(ethadv);
if (flowctrl & ALX_FC_ANEG) {
if (flowctrl & ALX_FC_RX) {
adv |= ADVERTISED_Pause;
if (!(flowctrl & ALX_FC_TX))
adv |= ADVERTISED_Asym_Pause;
} else if (flowctrl & ALX_FC_TX) {
adv |= ADVERTISED_Asym_Pause;
}
}
giga = 0;
if (alx_hw_giga(hw))
giga = ethtool_adv_to_mii_ctrl1000_t(ethadv);
cr = BMCR_RESET | BMCR_ANENABLE | BMCR_ANRESTART;
if (alx_write_phy_reg(hw, MII_ADVERTISE, adv) ||
alx_write_phy_reg(hw, MII_CTRL1000, giga) ||
alx_write_phy_reg(hw, MII_BMCR, cr))
err = -EBUSY;
} else {
cr = BMCR_RESET;
if (ethadv == ADVERTISED_100baseT_Half ||
ethadv == ADVERTISED_100baseT_Full)
cr |= BMCR_SPEED100;
if (ethadv == ADVERTISED_10baseT_Full ||
ethadv == ADVERTISED_100baseT_Full)
cr |= BMCR_FULLDPLX;
err = alx_write_phy_reg(hw, MII_BMCR, cr);
}
if (!err) {
alx_write_phy_reg(hw, ALX_MII_DBG_ADDR, ALX_PHY_INITED);
val |= ethadv_to_hw_cfg(hw, ethadv);
}
alx_write_mem32(hw, ALX_DRV, val);
return err;
}
void alx_post_phy_link(struct alx_hw *hw)
{
u16 phy_val, len, agc;
u8 revid = alx_hw_revision(hw);
bool adj_th = revid == ALX_REV_B0;
if (revid != ALX_REV_B0 && !alx_is_rev_a(revid))
return;
/* 1000BT/AZ, wrong cable length */
if (hw->link_speed != SPEED_UNKNOWN) {
alx_read_phy_ext(hw, ALX_MIIEXT_PCS, ALX_MIIEXT_CLDCTRL6,
&phy_val);
len = ALX_GET_FIELD(phy_val, ALX_CLDCTRL6_CAB_LEN);
alx_read_phy_dbg(hw, ALX_MIIDBG_AGC, &phy_val);
agc = ALX_GET_FIELD(phy_val, ALX_AGC_2_VGA);
if ((hw->link_speed == SPEED_1000 &&
(len > ALX_CLDCTRL6_CAB_LEN_SHORT1G ||
(len == 0 && agc > ALX_AGC_LONG1G_LIMT))) ||
(hw->link_speed == SPEED_100 &&
(len > ALX_CLDCTRL6_CAB_LEN_SHORT100M ||
(len == 0 && agc > ALX_AGC_LONG100M_LIMT)))) {
alx_write_phy_dbg(hw, ALX_MIIDBG_AZ_ANADECT,
ALX_AZ_ANADECT_LONG);
alx_read_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE,
&phy_val);
alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE,
phy_val | ALX_AFE_10BT_100M_TH);
} else {
alx_write_phy_dbg(hw, ALX_MIIDBG_AZ_ANADECT,
ALX_AZ_ANADECT_DEF);
alx_read_phy_ext(hw, ALX_MIIEXT_ANEG,
ALX_MIIEXT_AFE, &phy_val);
alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE,
phy_val & ~ALX_AFE_10BT_100M_TH);
}
/* threshold adjust */
if (adj_th && hw->lnk_patch) {
if (hw->link_speed == SPEED_100) {
alx_write_phy_dbg(hw, ALX_MIIDBG_MSE16DB,
ALX_MSE16DB_UP);
} else if (hw->link_speed == SPEED_1000) {
/*
* Giga link threshold, raise the tolerance of
* noise 50%
*/
alx_read_phy_dbg(hw, ALX_MIIDBG_MSE20DB,
&phy_val);
ALX_SET_FIELD(phy_val, ALX_MSE20DB_TH,
ALX_MSE20DB_TH_HI);
alx_write_phy_dbg(hw, ALX_MIIDBG_MSE20DB,
phy_val);
}
}
} else {
alx_read_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE,
&phy_val);
alx_write_phy_ext(hw, ALX_MIIEXT_ANEG, ALX_MIIEXT_AFE,
phy_val & ~ALX_AFE_10BT_100M_TH);
if (adj_th && hw->lnk_patch) {
alx_write_phy_dbg(hw, ALX_MIIDBG_MSE16DB,
ALX_MSE16DB_DOWN);
alx_read_phy_dbg(hw, ALX_MIIDBG_MSE20DB, &phy_val);
ALX_SET_FIELD(phy_val, ALX_MSE20DB_TH,
ALX_MSE20DB_TH_DEF);
alx_write_phy_dbg(hw, ALX_MIIDBG_MSE20DB, phy_val);
}
}
}
bool alx_phy_configured(struct alx_hw *hw)
{
u32 cfg, hw_cfg;
cfg = ethadv_to_hw_cfg(hw, hw->adv_cfg);
cfg = ALX_GET_FIELD(cfg, ALX_DRV_PHY);
hw_cfg = alx_get_phy_config(hw);
if (hw_cfg == ALX_DRV_PHY_UNKNOWN)
return false;
return cfg == hw_cfg;
}
int alx_read_phy_link(struct alx_hw *hw)
{
struct pci_dev *pdev = hw->pdev;
u16 bmsr, giga;
int err;
err = alx_read_phy_reg(hw, MII_BMSR, &bmsr);
if (err)
return err;
err = alx_read_phy_reg(hw, MII_BMSR, &bmsr);
if (err)
return err;
if (!(bmsr & BMSR_LSTATUS)) {
hw->link_speed = SPEED_UNKNOWN;
hw->duplex = DUPLEX_UNKNOWN;
return 0;
}
/* speed/duplex result is saved in PHY Specific Status Register */
err = alx_read_phy_reg(hw, ALX_MII_GIGA_PSSR, &giga);
if (err)
return err;
if (!(giga & ALX_GIGA_PSSR_SPD_DPLX_RESOLVED))
goto wrong_speed;
switch (giga & ALX_GIGA_PSSR_SPEED) {
case ALX_GIGA_PSSR_1000MBS:
hw->link_speed = SPEED_1000;
break;
case ALX_GIGA_PSSR_100MBS:
hw->link_speed = SPEED_100;
break;
case ALX_GIGA_PSSR_10MBS:
hw->link_speed = SPEED_10;
break;
default:
goto wrong_speed;
}
hw->duplex = (giga & ALX_GIGA_PSSR_DPLX) ? DUPLEX_FULL : DUPLEX_HALF;
return 0;
wrong_speed:
dev_err(&pdev->dev, "invalid PHY speed/duplex: 0x%x\n", giga);
return -EINVAL;
}
int alx_clear_phy_intr(struct alx_hw *hw)
{
u16 isr;
/* clear interrupt status by reading it */
return alx_read_phy_reg(hw, ALX_MII_ISR, &isr);
}
void alx_disable_rss(struct alx_hw *hw)
{
u32 ctrl = alx_read_mem32(hw, ALX_RXQ0);
ctrl &= ~ALX_RXQ0_RSS_HASH_EN;
alx_write_mem32(hw, ALX_RXQ0, ctrl);
}
void alx_configure_basic(struct alx_hw *hw)
{
u32 val, raw_mtu, max_payload;
u16 val16;
u8 chip_rev = alx_hw_revision(hw);
alx_set_macaddr(hw, hw->mac_addr);
alx_write_mem32(hw, ALX_CLK_GATE, ALX_CLK_GATE_ALL);
/* idle timeout to switch clk_125M */
if (chip_rev >= ALX_REV_B0)
alx_write_mem32(hw, ALX_IDLE_DECISN_TIMER,
ALX_IDLE_DECISN_TIMER_DEF);
alx_write_mem32(hw, ALX_SMB_TIMER, hw->smb_timer * 500UL);
val = alx_read_mem32(hw, ALX_MASTER);
val |= ALX_MASTER_IRQMOD2_EN |
ALX_MASTER_IRQMOD1_EN |
ALX_MASTER_SYSALVTIMER_EN;
alx_write_mem32(hw, ALX_MASTER, val);
alx_write_mem32(hw, ALX_IRQ_MODU_TIMER,
(hw->imt >> 1) << ALX_IRQ_MODU_TIMER1_SHIFT);
/* intr re-trig timeout */
alx_write_mem32(hw, ALX_INT_RETRIG, ALX_INT_RETRIG_TO);
/* tpd threshold to trig int */
alx_write_mem32(hw, ALX_TINT_TPD_THRSHLD, hw->ith_tpd);
alx_write_mem32(hw, ALX_TINT_TIMER, hw->imt);
raw_mtu = hw->mtu + ETH_HLEN;
alx_write_mem32(hw, ALX_MTU, raw_mtu + 8);
if (raw_mtu > ALX_MTU_JUMBO_TH)
hw->rx_ctrl &= ~ALX_MAC_CTRL_FAST_PAUSE;
if ((raw_mtu + 8) < ALX_TXQ1_JUMBO_TSO_TH)
val = (raw_mtu + 8 + 7) >> 3;
else
val = ALX_TXQ1_JUMBO_TSO_TH >> 3;
alx_write_mem32(hw, ALX_TXQ1, val | ALX_TXQ1_ERRLGPKT_DROP_EN);
max_payload = pcie_get_readrq(hw->pdev) >> 8;
/*
* if BIOS had changed the default dma read max length,
* restore it to default value
*/
if (max_payload < ALX_DEV_CTRL_MAXRRS_MIN)
pcie_set_readrq(hw->pdev, 128 << ALX_DEV_CTRL_MAXRRS_MIN);
val = ALX_TXQ_TPD_BURSTPREF_DEF << ALX_TXQ0_TPD_BURSTPREF_SHIFT |
ALX_TXQ0_MODE_ENHANCE | ALX_TXQ0_LSO_8023_EN |
ALX_TXQ0_SUPT_IPOPT |
ALX_TXQ_TXF_BURST_PREF_DEF << ALX_TXQ0_TXF_BURST_PREF_SHIFT;
alx_write_mem32(hw, ALX_TXQ0, val);
val = ALX_TXQ_TPD_BURSTPREF_DEF << ALX_HQTPD_Q1_NUMPREF_SHIFT |
ALX_TXQ_TPD_BURSTPREF_DEF << ALX_HQTPD_Q2_NUMPREF_SHIFT |
ALX_TXQ_TPD_BURSTPREF_DEF << ALX_HQTPD_Q3_NUMPREF_SHIFT |
ALX_HQTPD_BURST_EN;
alx_write_mem32(hw, ALX_HQTPD, val);
/* rxq, flow control */
val = alx_read_mem32(hw, ALX_SRAM5);
val = ALX_GET_FIELD(val, ALX_SRAM_RXF_LEN) << 3;
if (val > ALX_SRAM_RXF_LEN_8K) {
val16 = ALX_MTU_STD_ALGN >> 3;
val = (val - ALX_RXQ2_RXF_FLOW_CTRL_RSVD) >> 3;
} else {
val16 = ALX_MTU_STD_ALGN >> 3;
val = (val - ALX_MTU_STD_ALGN) >> 3;
}
alx_write_mem32(hw, ALX_RXQ2,
val16 << ALX_RXQ2_RXF_XOFF_THRESH_SHIFT |
val << ALX_RXQ2_RXF_XON_THRESH_SHIFT);
val = ALX_RXQ0_NUM_RFD_PREF_DEF << ALX_RXQ0_NUM_RFD_PREF_SHIFT |
ALX_RXQ0_RSS_MODE_DIS << ALX_RXQ0_RSS_MODE_SHIFT |
ALX_RXQ0_IDT_TBL_SIZE_DEF << ALX_RXQ0_IDT_TBL_SIZE_SHIFT |
ALX_RXQ0_RSS_HSTYP_ALL | ALX_RXQ0_RSS_HASH_EN |
ALX_RXQ0_IPV6_PARSE_EN;
if (alx_hw_giga(hw))
ALX_SET_FIELD(val, ALX_RXQ0_ASPM_THRESH,
ALX_RXQ0_ASPM_THRESH_100M);
alx_write_mem32(hw, ALX_RXQ0, val);
val = alx_read_mem32(hw, ALX_DMA);
val = ALX_DMA_RORDER_MODE_OUT << ALX_DMA_RORDER_MODE_SHIFT |
ALX_DMA_RREQ_PRI_DATA |
max_payload << ALX_DMA_RREQ_BLEN_SHIFT |
ALX_DMA_WDLY_CNT_DEF << ALX_DMA_WDLY_CNT_SHIFT |
ALX_DMA_RDLY_CNT_DEF << ALX_DMA_RDLY_CNT_SHIFT |
(hw->dma_chnl - 1) << ALX_DMA_RCHNL_SEL_SHIFT;
alx_write_mem32(hw, ALX_DMA, val);
/* default multi-tx-q weights */
val = ALX_WRR_PRI_RESTRICT_NONE << ALX_WRR_PRI_SHIFT |
4 << ALX_WRR_PRI0_SHIFT |
4 << ALX_WRR_PRI1_SHIFT |
4 << ALX_WRR_PRI2_SHIFT |
4 << ALX_WRR_PRI3_SHIFT;
alx_write_mem32(hw, ALX_WRR, val);
}
bool alx_get_phy_info(struct alx_hw *hw)
{
u16 devs1, devs2;
if (alx_read_phy_reg(hw, MII_PHYSID1, &hw->phy_id[0]) ||
alx_read_phy_reg(hw, MII_PHYSID2, &hw->phy_id[1]))
return false;
/* since we haven't PMA/PMD status2 register, we can't
* use mdio45_probe function for prtad and mmds.
* use fixed MMD3 to get mmds.
*/
if (alx_read_phy_ext(hw, 3, MDIO_DEVS1, &devs1) ||
alx_read_phy_ext(hw, 3, MDIO_DEVS2, &devs2))
return false;
hw->mdio.mmds = devs1 | devs2 << 16;
return true;
}
void alx_update_hw_stats(struct alx_hw *hw)
{
/* RX stats */
hw->stats.rx_ok += alx_read_mem32(hw, ALX_MIB_RX_OK);
hw->stats.rx_bcast += alx_read_mem32(hw, ALX_MIB_RX_BCAST);
hw->stats.rx_mcast += alx_read_mem32(hw, ALX_MIB_RX_MCAST);
hw->stats.rx_pause += alx_read_mem32(hw, ALX_MIB_RX_PAUSE);
hw->stats.rx_ctrl += alx_read_mem32(hw, ALX_MIB_RX_CTRL);
hw->stats.rx_fcs_err += alx_read_mem32(hw, ALX_MIB_RX_FCS_ERR);
hw->stats.rx_len_err += alx_read_mem32(hw, ALX_MIB_RX_LEN_ERR);
hw->stats.rx_byte_cnt += alx_read_mem32(hw, ALX_MIB_RX_BYTE_CNT);
hw->stats.rx_runt += alx_read_mem32(hw, ALX_MIB_RX_RUNT);
hw->stats.rx_frag += alx_read_mem32(hw, ALX_MIB_RX_FRAG);
hw->stats.rx_sz_64B += alx_read_mem32(hw, ALX_MIB_RX_SZ_64B);
hw->stats.rx_sz_127B += alx_read_mem32(hw, ALX_MIB_RX_SZ_127B);
hw->stats.rx_sz_255B += alx_read_mem32(hw, ALX_MIB_RX_SZ_255B);
hw->stats.rx_sz_511B += alx_read_mem32(hw, ALX_MIB_RX_SZ_511B);
hw->stats.rx_sz_1023B += alx_read_mem32(hw, ALX_MIB_RX_SZ_1023B);
hw->stats.rx_sz_1518B += alx_read_mem32(hw, ALX_MIB_RX_SZ_1518B);
hw->stats.rx_sz_max += alx_read_mem32(hw, ALX_MIB_RX_SZ_MAX);
hw->stats.rx_ov_sz += alx_read_mem32(hw, ALX_MIB_RX_OV_SZ);
hw->stats.rx_ov_rxf += alx_read_mem32(hw, ALX_MIB_RX_OV_RXF);
hw->stats.rx_ov_rrd += alx_read_mem32(hw, ALX_MIB_RX_OV_RRD);
hw->stats.rx_align_err += alx_read_mem32(hw, ALX_MIB_RX_ALIGN_ERR);
hw->stats.rx_bc_byte_cnt += alx_read_mem32(hw, ALX_MIB_RX_BCCNT);
hw->stats.rx_mc_byte_cnt += alx_read_mem32(hw, ALX_MIB_RX_MCCNT);
hw->stats.rx_err_addr += alx_read_mem32(hw, ALX_MIB_RX_ERRADDR);
/* TX stats */
hw->stats.tx_ok += alx_read_mem32(hw, ALX_MIB_TX_OK);
hw->stats.tx_bcast += alx_read_mem32(hw, ALX_MIB_TX_BCAST);
hw->stats.tx_mcast += alx_read_mem32(hw, ALX_MIB_TX_MCAST);
hw->stats.tx_pause += alx_read_mem32(hw, ALX_MIB_TX_PAUSE);
hw->stats.tx_exc_defer += alx_read_mem32(hw, ALX_MIB_TX_EXC_DEFER);
hw->stats.tx_ctrl += alx_read_mem32(hw, ALX_MIB_TX_CTRL);
hw->stats.tx_defer += alx_read_mem32(hw, ALX_MIB_TX_DEFER);
hw->stats.tx_byte_cnt += alx_read_mem32(hw, ALX_MIB_TX_BYTE_CNT);
hw->stats.tx_sz_64B += alx_read_mem32(hw, ALX_MIB_TX_SZ_64B);
hw->stats.tx_sz_127B += alx_read_mem32(hw, ALX_MIB_TX_SZ_127B);
hw->stats.tx_sz_255B += alx_read_mem32(hw, ALX_MIB_TX_SZ_255B);
hw->stats.tx_sz_511B += alx_read_mem32(hw, ALX_MIB_TX_SZ_511B);
hw->stats.tx_sz_1023B += alx_read_mem32(hw, ALX_MIB_TX_SZ_1023B);
hw->stats.tx_sz_1518B += alx_read_mem32(hw, ALX_MIB_TX_SZ_1518B);
hw->stats.tx_sz_max += alx_read_mem32(hw, ALX_MIB_TX_SZ_MAX);
hw->stats.tx_single_col += alx_read_mem32(hw, ALX_MIB_TX_SINGLE_COL);
hw->stats.tx_multi_col += alx_read_mem32(hw, ALX_MIB_TX_MULTI_COL);
hw->stats.tx_late_col += alx_read_mem32(hw, ALX_MIB_TX_LATE_COL);
hw->stats.tx_abort_col += alx_read_mem32(hw, ALX_MIB_TX_ABORT_COL);
hw->stats.tx_underrun += alx_read_mem32(hw, ALX_MIB_TX_UNDERRUN);
hw->stats.tx_trd_eop += alx_read_mem32(hw, ALX_MIB_TX_TRD_EOP);
hw->stats.tx_len_err += alx_read_mem32(hw, ALX_MIB_TX_LEN_ERR);
hw->stats.tx_trunc += alx_read_mem32(hw, ALX_MIB_TX_TRUNC);
hw->stats.tx_bc_byte_cnt += alx_read_mem32(hw, ALX_MIB_TX_BCCNT);
hw->stats.tx_mc_byte_cnt += alx_read_mem32(hw, ALX_MIB_TX_MCCNT);
hw->stats.update += alx_read_mem32(hw, ALX_MIB_UPDATE);
}
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