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linuxdebug/drivers/net/phy/broadcom.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0+
/*
* drivers/net/phy/broadcom.c
*
* Broadcom BCM5411, BCM5421 and BCM5461 Gigabit Ethernet
* transceivers.
*
* Copyright (c) 2006 Maciej W. Rozycki
*
* Inspired by code written by Amy Fong.
*/
#include "bcm-phy-lib.h"
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/phy.h>
#include <linux/brcmphy.h>
#include <linux/of.h>
#define BRCM_PHY_MODEL(phydev) \
((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask)
#define BRCM_PHY_REV(phydev) \
((phydev)->drv->phy_id & ~((phydev)->drv->phy_id_mask))
MODULE_DESCRIPTION("Broadcom PHY driver");
MODULE_AUTHOR("Maciej W. Rozycki");
MODULE_LICENSE("GPL");
struct bcm54xx_phy_priv {
u64 *stats;
struct bcm_ptp_private *ptp;
};
static int bcm54xx_config_clock_delay(struct phy_device *phydev)
{
int rc, val;
/* handling PHY's internal RX clock delay */
val = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC);
val |= MII_BCM54XX_AUXCTL_MISC_WREN;
if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||
phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
/* Disable RGMII RXC-RXD skew */
val &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN;
}
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
/* Enable RGMII RXC-RXD skew */
val |= MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_SKEW_EN;
}
rc = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
val);
if (rc < 0)
return rc;
/* handling PHY's internal TX clock delay */
val = bcm_phy_read_shadow(phydev, BCM54810_SHD_CLK_CTL);
if (phydev->interface == PHY_INTERFACE_MODE_RGMII ||
phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
/* Disable internal TX clock delay */
val &= ~BCM54810_SHD_CLK_CTL_GTXCLK_EN;
}
if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
/* Enable internal TX clock delay */
val |= BCM54810_SHD_CLK_CTL_GTXCLK_EN;
}
rc = bcm_phy_write_shadow(phydev, BCM54810_SHD_CLK_CTL, val);
if (rc < 0)
return rc;
return 0;
}
static int bcm54210e_config_init(struct phy_device *phydev)
{
int val;
bcm54xx_config_clock_delay(phydev);
if (phydev->dev_flags & PHY_BRCM_EN_MASTER_MODE) {
val = phy_read(phydev, MII_CTRL1000);
val |= CTL1000_AS_MASTER | CTL1000_ENABLE_MASTER;
phy_write(phydev, MII_CTRL1000, val);
}
return 0;
}
static int bcm54612e_config_init(struct phy_device *phydev)
{
int reg;
bcm54xx_config_clock_delay(phydev);
/* Enable CLK125 MUX on LED4 if ref clock is enabled. */
if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {
int err;
reg = bcm_phy_read_exp(phydev, BCM54612E_EXP_SPARE0);
err = bcm_phy_write_exp(phydev, BCM54612E_EXP_SPARE0,
BCM54612E_LED4_CLK125OUT_EN | reg);
if (err < 0)
return err;
}
return 0;
}
static int bcm54616s_config_init(struct phy_device *phydev)
{
int rc, val;
if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
phydev->interface != PHY_INTERFACE_MODE_1000BASEX)
return 0;
/* Ensure proper interface mode is selected. */
/* Disable RGMII mode */
val = bcm54xx_auxctl_read(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC);
if (val < 0)
return val;
val &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MISC_RGMII_EN;
val |= MII_BCM54XX_AUXCTL_MISC_WREN;
rc = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC,
val);
if (rc < 0)
return rc;
/* Select 1000BASE-X register set (primary SerDes) */
val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_MODE);
if (val < 0)
return val;
val |= BCM54XX_SHD_MODE_1000BX;
rc = bcm_phy_write_shadow(phydev, BCM54XX_SHD_MODE, val);
if (rc < 0)
return rc;
/* Power down SerDes interface */
rc = phy_set_bits(phydev, MII_BMCR, BMCR_PDOWN);
if (rc < 0)
return rc;
/* Select proper interface mode */
val &= ~BCM54XX_SHD_INTF_SEL_MASK;
val |= phydev->interface == PHY_INTERFACE_MODE_SGMII ?
BCM54XX_SHD_INTF_SEL_SGMII :
BCM54XX_SHD_INTF_SEL_GBIC;
rc = bcm_phy_write_shadow(phydev, BCM54XX_SHD_MODE, val);
if (rc < 0)
return rc;
/* Power up SerDes interface */
rc = phy_clear_bits(phydev, MII_BMCR, BMCR_PDOWN);
if (rc < 0)
return rc;
/* Select copper register set */
val &= ~BCM54XX_SHD_MODE_1000BX;
rc = bcm_phy_write_shadow(phydev, BCM54XX_SHD_MODE, val);
if (rc < 0)
return rc;
/* Power up copper interface */
return phy_clear_bits(phydev, MII_BMCR, BMCR_PDOWN);
}
/* Needs SMDSP clock enabled via bcm54xx_phydsp_config() */
static int bcm50610_a0_workaround(struct phy_device *phydev)
{
int err;
err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_AADJ1CH0,
MII_BCM54XX_EXP_AADJ1CH0_SWP_ABCD_OEN |
MII_BCM54XX_EXP_AADJ1CH0_SWSEL_THPF);
if (err < 0)
return err;
err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_AADJ1CH3,
MII_BCM54XX_EXP_AADJ1CH3_ADCCKADJ);
if (err < 0)
return err;
err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP75,
MII_BCM54XX_EXP_EXP75_VDACCTRL);
if (err < 0)
return err;
err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP96,
MII_BCM54XX_EXP_EXP96_MYST);
if (err < 0)
return err;
err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP97,
MII_BCM54XX_EXP_EXP97_MYST);
return err;
}
static int bcm54xx_phydsp_config(struct phy_device *phydev)
{
int err, err2;
/* Enable the SMDSP clock */
err = bcm54xx_auxctl_write(phydev,
MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA |
MII_BCM54XX_AUXCTL_ACTL_TX_6DB);
if (err < 0)
return err;
if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) {
/* Clear bit 9 to fix a phy interop issue. */
err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP08,
MII_BCM54XX_EXP_EXP08_RJCT_2MHZ);
if (err < 0)
goto error;
if (phydev->drv->phy_id == PHY_ID_BCM50610) {
err = bcm50610_a0_workaround(phydev);
if (err < 0)
goto error;
}
}
if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM57780) {
int val;
val = bcm_phy_read_exp(phydev, MII_BCM54XX_EXP_EXP75);
if (val < 0)
goto error;
val |= MII_BCM54XX_EXP_EXP75_CM_OSC;
err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP75, val);
}
error:
/* Disable the SMDSP clock */
err2 = bcm54xx_auxctl_write(phydev,
MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL,
MII_BCM54XX_AUXCTL_ACTL_TX_6DB);
/* Return the first error reported. */
return err ? err : err2;
}
static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev)
{
u32 orig;
int val;
bool clk125en = true;
/* Abort if we are using an untested phy. */
if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM57780 &&
BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 &&
BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610M &&
BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54210E &&
BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54810 &&
BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54811)
return;
val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_SCR3);
if (val < 0)
return;
orig = val;
if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
BRCM_PHY_REV(phydev) >= 0x3) {
/*
* Here, bit 0 _disables_ CLK125 when set.
* This bit is set by default.
*/
clk125en = false;
} else {
if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) {
if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM54811) {
/* Here, bit 0 _enables_ CLK125 when set */
val &= ~BCM54XX_SHD_SCR3_DEF_CLK125;
}
clk125en = false;
}
}
if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
val &= ~BCM54XX_SHD_SCR3_DLLAPD_DIS;
else
val |= BCM54XX_SHD_SCR3_DLLAPD_DIS;
if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) {
if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54210E ||
BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54810 ||
BRCM_PHY_MODEL(phydev) == PHY_ID_BCM54811)
val |= BCM54XX_SHD_SCR3_RXCTXC_DIS;
else
val |= BCM54XX_SHD_SCR3_TRDDAPD;
}
if (orig != val)
bcm_phy_write_shadow(phydev, BCM54XX_SHD_SCR3, val);
val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_APD);
if (val < 0)
return;
orig = val;
if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
val |= BCM54XX_SHD_APD_EN;
else
val &= ~BCM54XX_SHD_APD_EN;
if (orig != val)
bcm_phy_write_shadow(phydev, BCM54XX_SHD_APD, val);
}
static void bcm54xx_ptp_stop(struct phy_device *phydev)
{
struct bcm54xx_phy_priv *priv = phydev->priv;
if (priv->ptp)
bcm_ptp_stop(priv->ptp);
}
static void bcm54xx_ptp_config_init(struct phy_device *phydev)
{
struct bcm54xx_phy_priv *priv = phydev->priv;
if (priv->ptp)
bcm_ptp_config_init(phydev);
}
static int bcm54xx_config_init(struct phy_device *phydev)
{
int reg, err, val;
reg = phy_read(phydev, MII_BCM54XX_ECR);
if (reg < 0)
return reg;
/* Mask interrupts globally. */
reg |= MII_BCM54XX_ECR_IM;
err = phy_write(phydev, MII_BCM54XX_ECR, reg);
if (err < 0)
return err;
/* Unmask events we are interested in. */
reg = ~(MII_BCM54XX_INT_DUPLEX |
MII_BCM54XX_INT_SPEED |
MII_BCM54XX_INT_LINK);
err = phy_write(phydev, MII_BCM54XX_IMR, reg);
if (err < 0)
return err;
if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 ||
BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) &&
(phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE))
bcm_phy_write_shadow(phydev, BCM54XX_SHD_RGMII_MODE, 0);
bcm54xx_adjust_rxrefclk(phydev);
switch (BRCM_PHY_MODEL(phydev)) {
case PHY_ID_BCM50610:
case PHY_ID_BCM50610M:
err = bcm54xx_config_clock_delay(phydev);
break;
case PHY_ID_BCM54210E:
err = bcm54210e_config_init(phydev);
break;
case PHY_ID_BCM54612E:
err = bcm54612e_config_init(phydev);
break;
case PHY_ID_BCM54616S:
err = bcm54616s_config_init(phydev);
break;
case PHY_ID_BCM54810:
/* For BCM54810, we need to disable BroadR-Reach function */
val = bcm_phy_read_exp(phydev,
BCM54810_EXP_BROADREACH_LRE_MISC_CTL);
val &= ~BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN;
err = bcm_phy_write_exp(phydev,
BCM54810_EXP_BROADREACH_LRE_MISC_CTL,
val);
break;
}
if (err)
return err;
bcm54xx_phydsp_config(phydev);
/* For non-SFP setups, encode link speed into LED1 and LED3 pair
* (green/amber).
* Also flash these two LEDs on activity. This means configuring
* them for MULTICOLOR and encoding link/activity into them.
* Don't do this for devices on an SFP module, since some of these
* use the LED outputs to control the SFP LOS signal, and changing
* these settings will cause LOS to malfunction.
*/
if (!phy_on_sfp(phydev)) {
val = BCM5482_SHD_LEDS1_LED1(BCM_LED_SRC_MULTICOLOR1) |
BCM5482_SHD_LEDS1_LED3(BCM_LED_SRC_MULTICOLOR1);
bcm_phy_write_shadow(phydev, BCM5482_SHD_LEDS1, val);
val = BCM_LED_MULTICOLOR_IN_PHASE |
BCM5482_SHD_LEDS1_LED1(BCM_LED_MULTICOLOR_LINK_ACT) |
BCM5482_SHD_LEDS1_LED3(BCM_LED_MULTICOLOR_LINK_ACT);
bcm_phy_write_exp(phydev, BCM_EXP_MULTICOLOR, val);
}
bcm54xx_ptp_config_init(phydev);
return 0;
}
static int bcm54xx_iddq_set(struct phy_device *phydev, bool enable)
{
int ret = 0;
if (!(phydev->dev_flags & PHY_BRCM_IDDQ_SUSPEND))
return ret;
ret = bcm_phy_read_exp(phydev, BCM54XX_TOP_MISC_IDDQ_CTRL);
if (ret < 0)
goto out;
if (enable)
ret |= BCM54XX_TOP_MISC_IDDQ_SR | BCM54XX_TOP_MISC_IDDQ_LP;
else
ret &= ~(BCM54XX_TOP_MISC_IDDQ_SR | BCM54XX_TOP_MISC_IDDQ_LP);
ret = bcm_phy_write_exp(phydev, BCM54XX_TOP_MISC_IDDQ_CTRL, ret);
out:
return ret;
}
static int bcm54xx_suspend(struct phy_device *phydev)
{
int ret;
bcm54xx_ptp_stop(phydev);
/* We cannot use a read/modify/write here otherwise the PHY gets into
* a bad state where its LEDs keep flashing, thus defeating the purpose
* of low power mode.
*/
ret = phy_write(phydev, MII_BMCR, BMCR_PDOWN);
if (ret < 0)
return ret;
return bcm54xx_iddq_set(phydev, true);
}
static int bcm54xx_resume(struct phy_device *phydev)
{
int ret;
ret = bcm54xx_iddq_set(phydev, false);
if (ret < 0)
return ret;
/* Writes to register other than BMCR would be ignored
* unless we clear the PDOWN bit first
*/
ret = genphy_resume(phydev);
if (ret < 0)
return ret;
/* Upon exiting power down, the PHY remains in an internal reset state
* for 40us
*/
fsleep(40);
/* Issue a soft reset after clearing the power down bit
* and before doing any other configuration.
*/
if (phydev->dev_flags & PHY_BRCM_IDDQ_SUSPEND) {
ret = genphy_soft_reset(phydev);
if (ret < 0)
return ret;
}
return bcm54xx_config_init(phydev);
}
static int bcm54810_read_mmd(struct phy_device *phydev, int devnum, u16 regnum)
{
return -EOPNOTSUPP;
}
static int bcm54810_write_mmd(struct phy_device *phydev, int devnum, u16 regnum,
u16 val)
{
return -EOPNOTSUPP;
}
static int bcm54811_config_init(struct phy_device *phydev)
{
int err, reg;
/* Disable BroadR-Reach function. */
reg = bcm_phy_read_exp(phydev, BCM54810_EXP_BROADREACH_LRE_MISC_CTL);
reg &= ~BCM54810_EXP_BROADREACH_LRE_MISC_CTL_EN;
err = bcm_phy_write_exp(phydev, BCM54810_EXP_BROADREACH_LRE_MISC_CTL,
reg);
if (err < 0)
return err;
err = bcm54xx_config_init(phydev);
/* Enable CLK125 MUX on LED4 if ref clock is enabled. */
if (!(phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED)) {
reg = bcm_phy_read_exp(phydev, BCM54612E_EXP_SPARE0);
err = bcm_phy_write_exp(phydev, BCM54612E_EXP_SPARE0,
BCM54612E_LED4_CLK125OUT_EN | reg);
if (err < 0)
return err;
}
return err;
}
static int bcm5481_config_aneg(struct phy_device *phydev)
{
struct device_node *np = phydev->mdio.dev.of_node;
int ret;
/* Aneg firstly. */
ret = genphy_config_aneg(phydev);
/* Then we can set up the delay. */
bcm54xx_config_clock_delay(phydev);
if (of_property_read_bool(np, "enet-phy-lane-swap")) {
/* Lane Swap - Undocumented register...magic! */
ret = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_SEL_ER + 0x9,
0x11B);
if (ret < 0)
return ret;
}
return ret;
}
struct bcm54616s_phy_priv {
bool mode_1000bx_en;
};
static int bcm54616s_probe(struct phy_device *phydev)
{
struct bcm54616s_phy_priv *priv;
int val;
priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
phydev->priv = priv;
val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_MODE);
if (val < 0)
return val;
/* The PHY is strapped in RGMII-fiber mode when INTERF_SEL[1:0]
* is 01b, and the link between PHY and its link partner can be
* either 1000Base-X or 100Base-FX.
* RGMII-1000Base-X is properly supported, but RGMII-100Base-FX
* support is still missing as of now.
*/
if ((val & BCM54XX_SHD_INTF_SEL_MASK) == BCM54XX_SHD_INTF_SEL_RGMII) {
val = bcm_phy_read_shadow(phydev, BCM54616S_SHD_100FX_CTRL);
if (val < 0)
return val;
/* Bit 0 of the SerDes 100-FX Control register, when set
* to 1, sets the MII/RGMII -> 100BASE-FX configuration.
* When this bit is set to 0, it sets the GMII/RGMII ->
* 1000BASE-X configuration.
*/
if (!(val & BCM54616S_100FX_MODE))
priv->mode_1000bx_en = true;
phydev->port = PORT_FIBRE;
}
return 0;
}
static int bcm54616s_config_aneg(struct phy_device *phydev)
{
struct bcm54616s_phy_priv *priv = phydev->priv;
int ret;
/* Aneg firstly. */
if (priv->mode_1000bx_en)
ret = genphy_c37_config_aneg(phydev);
else
ret = genphy_config_aneg(phydev);
/* Then we can set up the delay. */
bcm54xx_config_clock_delay(phydev);
return ret;
}
static int bcm54616s_read_status(struct phy_device *phydev)
{
struct bcm54616s_phy_priv *priv = phydev->priv;
int err;
if (priv->mode_1000bx_en)
err = genphy_c37_read_status(phydev);
else
err = genphy_read_status(phydev);
return err;
}
static int brcm_phy_setbits(struct phy_device *phydev, int reg, int set)
{
int val;
val = phy_read(phydev, reg);
if (val < 0)
return val;
return phy_write(phydev, reg, val | set);
}
static int brcm_fet_config_init(struct phy_device *phydev)
{
int reg, err, err2, brcmtest;
/* Reset the PHY to bring it to a known state. */
err = phy_write(phydev, MII_BMCR, BMCR_RESET);
if (err < 0)
return err;
/* The datasheet indicates the PHY needs up to 1us to complete a reset,
* build some slack here.
*/
usleep_range(1000, 2000);
/* The PHY requires 65 MDC clock cycles to complete a write operation
* and turnaround the line properly.
*
* We ignore -EIO here as the MDIO controller (e.g.: mdio-bcm-unimac)
* may flag the lack of turn-around as a read failure. This is
* particularly true with this combination since the MDIO controller
* only used 64 MDC cycles. This is not a critical failure in this
* specific case and it has no functional impact otherwise, so we let
* that one go through. If there is a genuine bus error, the next read
* of MII_BRCM_FET_INTREG will error out.
*/
err = phy_read(phydev, MII_BMCR);
if (err < 0 && err != -EIO)
return err;
reg = phy_read(phydev, MII_BRCM_FET_INTREG);
if (reg < 0)
return reg;
/* Unmask events we are interested in and mask interrupts globally. */
reg = MII_BRCM_FET_IR_DUPLEX_EN |
MII_BRCM_FET_IR_SPEED_EN |
MII_BRCM_FET_IR_LINK_EN |
MII_BRCM_FET_IR_ENABLE |
MII_BRCM_FET_IR_MASK;
err = phy_write(phydev, MII_BRCM_FET_INTREG, reg);
if (err < 0)
return err;
/* Enable shadow register access */
brcmtest = phy_read(phydev, MII_BRCM_FET_BRCMTEST);
if (brcmtest < 0)
return brcmtest;
reg = brcmtest | MII_BRCM_FET_BT_SRE;
err = phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg);
if (err < 0)
return err;
/* Set the LED mode */
reg = phy_read(phydev, MII_BRCM_FET_SHDW_AUXMODE4);
if (reg < 0) {
err = reg;
goto done;
}
reg &= ~MII_BRCM_FET_SHDW_AM4_LED_MASK;
reg |= MII_BRCM_FET_SHDW_AM4_LED_MODE1;
err = phy_write(phydev, MII_BRCM_FET_SHDW_AUXMODE4, reg);
if (err < 0)
goto done;
/* Enable auto MDIX */
err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_MISCCTRL,
MII_BRCM_FET_SHDW_MC_FAME);
if (err < 0)
goto done;
if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) {
/* Enable auto power down */
err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2,
MII_BRCM_FET_SHDW_AS2_APDE);
}
done:
/* Disable shadow register access */
err2 = phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest);
if (!err)
err = err2;
return err;
}
static int brcm_fet_ack_interrupt(struct phy_device *phydev)
{
int reg;
/* Clear pending interrupts. */
reg = phy_read(phydev, MII_BRCM_FET_INTREG);
if (reg < 0)
return reg;
return 0;
}
static int brcm_fet_config_intr(struct phy_device *phydev)
{
int reg, err;
reg = phy_read(phydev, MII_BRCM_FET_INTREG);
if (reg < 0)
return reg;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
err = brcm_fet_ack_interrupt(phydev);
if (err)
return err;
reg &= ~MII_BRCM_FET_IR_MASK;
err = phy_write(phydev, MII_BRCM_FET_INTREG, reg);
} else {
reg |= MII_BRCM_FET_IR_MASK;
err = phy_write(phydev, MII_BRCM_FET_INTREG, reg);
if (err)
return err;
err = brcm_fet_ack_interrupt(phydev);
}
return err;
}
static irqreturn_t brcm_fet_handle_interrupt(struct phy_device *phydev)
{
int irq_status;
irq_status = phy_read(phydev, MII_BRCM_FET_INTREG);
if (irq_status < 0) {
phy_error(phydev);
return IRQ_NONE;
}
if (irq_status == 0)
return IRQ_NONE;
phy_trigger_machine(phydev);
return IRQ_HANDLED;
}
static int brcm_fet_suspend(struct phy_device *phydev)
{
int reg, err, err2, brcmtest;
/* We cannot use a read/modify/write here otherwise the PHY continues
* to drive LEDs which defeats the purpose of low power mode.
*/
err = phy_write(phydev, MII_BMCR, BMCR_PDOWN);
if (err < 0)
return err;
/* Enable shadow register access */
brcmtest = phy_read(phydev, MII_BRCM_FET_BRCMTEST);
if (brcmtest < 0)
return brcmtest;
reg = brcmtest | MII_BRCM_FET_BT_SRE;
err = phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg);
if (err < 0)
return err;
/* Set standby mode */
err = phy_modify(phydev, MII_BRCM_FET_SHDW_AUXMODE4,
MII_BRCM_FET_SHDW_AM4_STANDBY,
MII_BRCM_FET_SHDW_AM4_STANDBY);
/* Disable shadow register access */
err2 = phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest);
if (!err)
err = err2;
return err;
}
static int bcm54xx_phy_probe(struct phy_device *phydev)
{
struct bcm54xx_phy_priv *priv;
priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
phydev->priv = priv;
priv->stats = devm_kcalloc(&phydev->mdio.dev,
bcm_phy_get_sset_count(phydev), sizeof(u64),
GFP_KERNEL);
if (!priv->stats)
return -ENOMEM;
priv->ptp = bcm_ptp_probe(phydev);
if (IS_ERR(priv->ptp))
return PTR_ERR(priv->ptp);
return 0;
}
static void bcm54xx_get_stats(struct phy_device *phydev,
struct ethtool_stats *stats, u64 *data)
{
struct bcm54xx_phy_priv *priv = phydev->priv;
bcm_phy_get_stats(phydev, priv->stats, stats, data);
}
static void bcm54xx_link_change_notify(struct phy_device *phydev)
{
u16 mask = MII_BCM54XX_EXP_EXP08_EARLY_DAC_WAKE |
MII_BCM54XX_EXP_EXP08_FORCE_DAC_WAKE;
int ret;
if (phydev->state != PHY_RUNNING)
return;
/* Don't change the DAC wake settings if auto power down
* is not requested.
*/
if (!(phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
return;
ret = bcm_phy_read_exp(phydev, MII_BCM54XX_EXP_EXP08);
if (ret < 0)
return;
/* Enable/disable 10BaseT auto and forced early DAC wake depending
* on the negotiated speed, those settings should only be done
* for 10Mbits/sec.
*/
if (phydev->speed == SPEED_10)
ret |= mask;
else
ret &= ~mask;
bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP08, ret);
}
static struct phy_driver broadcom_drivers[] = {
{
.phy_id = PHY_ID_BCM5411,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM5411",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM5421,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM5421",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54210E,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM54210E",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
.suspend = bcm54xx_suspend,
.resume = bcm54xx_resume,
}, {
.phy_id = PHY_ID_BCM5461,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM5461",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54612E,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM54612E",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54616S,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM54616S",
/* PHY_GBIT_FEATURES */
.soft_reset = genphy_soft_reset,
.config_init = bcm54xx_config_init,
.config_aneg = bcm54616s_config_aneg,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.read_status = bcm54616s_read_status,
.probe = bcm54616s_probe,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM5464,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM5464",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.suspend = genphy_suspend,
.resume = genphy_resume,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM5481,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM5481",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_aneg = bcm5481_config_aneg,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54810,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM54810",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.read_mmd = bcm54810_read_mmd,
.write_mmd = bcm54810_write_mmd,
.config_init = bcm54xx_config_init,
.config_aneg = bcm5481_config_aneg,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.suspend = bcm54xx_suspend,
.resume = bcm54xx_resume,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54811,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM54811",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54811_config_init,
.config_aneg = bcm5481_config_aneg,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.suspend = bcm54xx_suspend,
.resume = bcm54xx_resume,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM5482,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM5482",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM50610,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM50610",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
.suspend = bcm54xx_suspend,
.resume = bcm54xx_resume,
}, {
.phy_id = PHY_ID_BCM50610M,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM50610M",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
.suspend = bcm54xx_suspend,
.resume = bcm54xx_resume,
}, {
.phy_id = PHY_ID_BCM57780,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM57780",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCMAC131,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCMAC131",
/* PHY_BASIC_FEATURES */
.config_init = brcm_fet_config_init,
.config_intr = brcm_fet_config_intr,
.handle_interrupt = brcm_fet_handle_interrupt,
.suspend = brcm_fet_suspend,
.resume = brcm_fet_config_init,
}, {
.phy_id = PHY_ID_BCM5241,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM5241",
/* PHY_BASIC_FEATURES */
.config_init = brcm_fet_config_init,
.config_intr = brcm_fet_config_intr,
.handle_interrupt = brcm_fet_handle_interrupt,
.suspend = brcm_fet_suspend,
.resume = brcm_fet_config_init,
}, {
.phy_id = PHY_ID_BCM5395,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM5395",
.flags = PHY_IS_INTERNAL,
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM53125,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM53125",
.flags = PHY_IS_INTERNAL,
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM53128,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM53128",
.flags = PHY_IS_INTERNAL,
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM89610,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM89610",
/* PHY_GBIT_FEATURES */
.get_sset_count = bcm_phy_get_sset_count,
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
.link_change_notify = bcm54xx_link_change_notify,
} };
module_phy_driver(broadcom_drivers);
static struct mdio_device_id __maybe_unused broadcom_tbl[] = {
{ PHY_ID_BCM5411, 0xfffffff0 },
{ PHY_ID_BCM5421, 0xfffffff0 },
{ PHY_ID_BCM54210E, 0xfffffff0 },
{ PHY_ID_BCM5461, 0xfffffff0 },
{ PHY_ID_BCM54612E, 0xfffffff0 },
{ PHY_ID_BCM54616S, 0xfffffff0 },
{ PHY_ID_BCM5464, 0xfffffff0 },
{ PHY_ID_BCM5481, 0xfffffff0 },
{ PHY_ID_BCM54810, 0xfffffff0 },
{ PHY_ID_BCM54811, 0xfffffff0 },
{ PHY_ID_BCM5482, 0xfffffff0 },
{ PHY_ID_BCM50610, 0xfffffff0 },
{ PHY_ID_BCM50610M, 0xfffffff0 },
{ PHY_ID_BCM57780, 0xfffffff0 },
{ PHY_ID_BCMAC131, 0xfffffff0 },
{ PHY_ID_BCM5241, 0xfffffff0 },
{ PHY_ID_BCM5395, 0xfffffff0 },
{ PHY_ID_BCM53125, 0xfffffff0 },
{ PHY_ID_BCM53128, 0xfffffff0 },
{ PHY_ID_BCM89610, 0xfffffff0 },
{ }
};
MODULE_DEVICE_TABLE(mdio, broadcom_tbl);