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// SPDX-License-Identifier: GPL-2.0
/*
* Driver for Aquantia PHY
*
* Author: Shaohui Xie <Shaohui.Xie@freescale.com>
*
* Copyright 2015 Freescale Semiconductor, Inc.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/phy.h>
#define PHY_ID_AQ1202 0x03a1b445
#define PHY_ID_AQ2104 0x03a1b460
#define PHY_ID_AQR105 0x03a1b4a2
#define PHY_ID_AQR106 0x03a1b4d0
#define PHY_ID_AQR107 0x03a1b4e0
#define PHY_ID_AQCS109 0x03a1b5c2
#define PHY_ID_AQR405 0x03a1b4b0
#define MDIO_AN_VEND_PROV 0xc400
#define MDIO_AN_VEND_PROV_1000BASET_FULL BIT(15)
#define MDIO_AN_VEND_PROV_1000BASET_HALF BIT(14)
#define MDIO_AN_TX_VEND_STATUS1 0xc800
#define MDIO_AN_TX_VEND_STATUS1_10BASET (0x0 << 1)
#define MDIO_AN_TX_VEND_STATUS1_100BASETX (0x1 << 1)
#define MDIO_AN_TX_VEND_STATUS1_1000BASET (0x2 << 1)
#define MDIO_AN_TX_VEND_STATUS1_10GBASET (0x3 << 1)
#define MDIO_AN_TX_VEND_STATUS1_2500BASET (0x4 << 1)
#define MDIO_AN_TX_VEND_STATUS1_5000BASET (0x5 << 1)
#define MDIO_AN_TX_VEND_STATUS1_RATE_MASK (0x7 << 1)
#define MDIO_AN_TX_VEND_STATUS1_FULL_DUPLEX BIT(0)
#define MDIO_AN_TX_VEND_INT_STATUS2 0xcc01
#define MDIO_AN_TX_VEND_INT_MASK2 0xd401
#define MDIO_AN_TX_VEND_INT_MASK2_LINK BIT(0)
#define MDIO_AN_RX_LP_STAT1 0xe820
#define MDIO_AN_RX_LP_STAT1_1000BASET_FULL BIT(15)
#define MDIO_AN_RX_LP_STAT1_1000BASET_HALF BIT(14)
/* Vendor specific 1, MDIO_MMD_VEND1 */
#define VEND1_GLOBAL_INT_STD_STATUS 0xfc00
#define VEND1_GLOBAL_INT_VEND_STATUS 0xfc01
#define VEND1_GLOBAL_INT_STD_MASK 0xff00
#define VEND1_GLOBAL_INT_STD_MASK_PMA1 BIT(15)
#define VEND1_GLOBAL_INT_STD_MASK_PMA2 BIT(14)
#define VEND1_GLOBAL_INT_STD_MASK_PCS1 BIT(13)
#define VEND1_GLOBAL_INT_STD_MASK_PCS2 BIT(12)
#define VEND1_GLOBAL_INT_STD_MASK_PCS3 BIT(11)
#define VEND1_GLOBAL_INT_STD_MASK_PHY_XS1 BIT(10)
#define VEND1_GLOBAL_INT_STD_MASK_PHY_XS2 BIT(9)
#define VEND1_GLOBAL_INT_STD_MASK_AN1 BIT(8)
#define VEND1_GLOBAL_INT_STD_MASK_AN2 BIT(7)
#define VEND1_GLOBAL_INT_STD_MASK_GBE BIT(6)
#define VEND1_GLOBAL_INT_STD_MASK_ALL BIT(0)
#define VEND1_GLOBAL_INT_VEND_MASK 0xff01
#define VEND1_GLOBAL_INT_VEND_MASK_PMA BIT(15)
#define VEND1_GLOBAL_INT_VEND_MASK_PCS BIT(14)
#define VEND1_GLOBAL_INT_VEND_MASK_PHY_XS BIT(13)
#define VEND1_GLOBAL_INT_VEND_MASK_AN BIT(12)
#define VEND1_GLOBAL_INT_VEND_MASK_GBE BIT(11)
#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL1 BIT(2)
#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL2 BIT(1)
#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3 BIT(0)
static int aqr_config_aneg(struct phy_device *phydev)
{
bool changed = false;
u16 reg;
int ret;
if (phydev->autoneg == AUTONEG_DISABLE)
return genphy_c45_pma_setup_forced(phydev);
ret = genphy_c45_an_config_aneg(phydev);
if (ret < 0)
return ret;
if (ret > 0)
changed = true;
/* Clause 45 has no standardized support for 1000BaseT, therefore
* use vendor registers for this mode.
*/
reg = 0;
if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
phydev->advertising))
reg |= MDIO_AN_VEND_PROV_1000BASET_FULL;
if (linkmode_test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
phydev->advertising))
reg |= MDIO_AN_VEND_PROV_1000BASET_HALF;
ret = phy_modify_mmd_changed(phydev, MDIO_MMD_AN, MDIO_AN_VEND_PROV,
MDIO_AN_VEND_PROV_1000BASET_HALF |
MDIO_AN_VEND_PROV_1000BASET_FULL, reg);
if (ret < 0)
return ret;
if (ret > 0)
changed = true;
return genphy_c45_check_and_restart_aneg(phydev, changed);
}
static int aqr_config_intr(struct phy_device *phydev)
{
int err;
if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
err = phy_write_mmd(phydev, MDIO_MMD_AN,
MDIO_AN_TX_VEND_INT_MASK2,
MDIO_AN_TX_VEND_INT_MASK2_LINK);
if (err < 0)
return err;
err = phy_write_mmd(phydev, MDIO_MMD_VEND1,
VEND1_GLOBAL_INT_STD_MASK,
VEND1_GLOBAL_INT_STD_MASK_ALL);
if (err < 0)
return err;
err = phy_write_mmd(phydev, MDIO_MMD_VEND1,
VEND1_GLOBAL_INT_VEND_MASK,
VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3 |
VEND1_GLOBAL_INT_VEND_MASK_AN);
} else {
err = phy_write_mmd(phydev, MDIO_MMD_AN,
MDIO_AN_TX_VEND_INT_MASK2, 0);
if (err < 0)
return err;
err = phy_write_mmd(phydev, MDIO_MMD_VEND1,
VEND1_GLOBAL_INT_STD_MASK, 0);
if (err < 0)
return err;
err = phy_write_mmd(phydev, MDIO_MMD_VEND1,
VEND1_GLOBAL_INT_VEND_MASK, 0);
}
return err;
}
static int aqr_ack_interrupt(struct phy_device *phydev)
{
int reg;
reg = phy_read_mmd(phydev, MDIO_MMD_AN,
MDIO_AN_TX_VEND_INT_STATUS2);
return (reg < 0) ? reg : 0;
}
static int aqr_read_status(struct phy_device *phydev)
{
int val;
if (phydev->autoneg == AUTONEG_ENABLE) {
val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_LP_STAT1);
if (val < 0)
return val;
linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
phydev->lp_advertising,
val & MDIO_AN_RX_LP_STAT1_1000BASET_FULL);
linkmode_mod_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
phydev->lp_advertising,
val & MDIO_AN_RX_LP_STAT1_1000BASET_HALF);
}
return genphy_c45_read_status(phydev);
}
static int aqcs109_config_init(struct phy_device *phydev)
{
/* AQCS109 belongs to a chip family partially supporting 10G and 5G.
* PMA speed ability bits are the same for all members of the family,
* AQCS109 however supports speeds up to 2.5G only.
*/
return phy_set_max_speed(phydev, SPEED_2500);
}
static struct phy_driver aqr_driver[] = {
{
PHY_ID_MATCH_MODEL(PHY_ID_AQ1202),
.name = "Aquantia AQ1202",
.aneg_done = genphy_c45_aneg_done,
.get_features = genphy_c45_pma_read_abilities,
.config_aneg = aqr_config_aneg,
.config_intr = aqr_config_intr,
.ack_interrupt = aqr_ack_interrupt,
.read_status = aqr_read_status,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQ2104),
.name = "Aquantia AQ2104",
.aneg_done = genphy_c45_aneg_done,
.get_features = genphy_c45_pma_read_abilities,
.config_aneg = aqr_config_aneg,
.config_intr = aqr_config_intr,
.ack_interrupt = aqr_ack_interrupt,
.read_status = aqr_read_status,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR105),
.name = "Aquantia AQR105",
.aneg_done = genphy_c45_aneg_done,
.get_features = genphy_c45_pma_read_abilities,
.config_aneg = aqr_config_aneg,
.config_intr = aqr_config_intr,
.ack_interrupt = aqr_ack_interrupt,
.read_status = aqr_read_status,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR106),
.name = "Aquantia AQR106",
.aneg_done = genphy_c45_aneg_done,
.get_features = genphy_c45_pma_read_abilities,
.config_aneg = aqr_config_aneg,
.config_intr = aqr_config_intr,
.ack_interrupt = aqr_ack_interrupt,
.read_status = aqr_read_status,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR107),
.name = "Aquantia AQR107",
.aneg_done = genphy_c45_aneg_done,
.get_features = genphy_c45_pma_read_abilities,
.config_aneg = aqr_config_aneg,
.config_intr = aqr_config_intr,
.ack_interrupt = aqr_ack_interrupt,
.read_status = aqr_read_status,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQCS109),
.name = "Aquantia AQCS109",
.aneg_done = genphy_c45_aneg_done,
.get_features = genphy_c45_pma_read_abilities,
.config_init = aqcs109_config_init,
.config_aneg = aqr_config_aneg,
.config_intr = aqr_config_intr,
.ack_interrupt = aqr_ack_interrupt,
.read_status = aqr_read_status,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR405),
.name = "Aquantia AQR405",
.aneg_done = genphy_c45_aneg_done,
.get_features = genphy_c45_pma_read_abilities,
.config_aneg = aqr_config_aneg,
.config_intr = aqr_config_intr,
.ack_interrupt = aqr_ack_interrupt,
.read_status = aqr_read_status,
},
};
module_phy_driver(aqr_driver);
static struct mdio_device_id __maybe_unused aqr_tbl[] = {
{ PHY_ID_MATCH_MODEL(PHY_ID_AQ1202) },
{ PHY_ID_MATCH_MODEL(PHY_ID_AQ2104) },
{ PHY_ID_MATCH_MODEL(PHY_ID_AQR105) },
{ PHY_ID_MATCH_MODEL(PHY_ID_AQR106) },
{ PHY_ID_MATCH_MODEL(PHY_ID_AQR107) },
{ PHY_ID_MATCH_MODEL(PHY_ID_AQCS109) },
{ PHY_ID_MATCH_MODEL(PHY_ID_AQR405) },
{ }
};
MODULE_DEVICE_TABLE(mdio, aqr_tbl);
MODULE_DESCRIPTION("Aquantia PHY driver");
MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
MODULE_LICENSE("GPL v2");
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