Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 882 insertions, 0 deletions

diff --git a/drivers/net/phy/aquantia_main.c b/drivers/net/phy/aquantia_main.c
new file mode 100644
index 0000000000..334a6904ca
--- /dev/null
+++ b/drivers/net/phy/aquantia_main.c
@@ -0,0 +1,882 @@
+// 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/bitfield.h>
+#include <linux/phy.h>
+
+#include "aquantia.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 PHY_ID_AQR112	0x03a1b662
+#define PHY_ID_AQR412	0x03a1b712
+#define PHY_ID_AQR113C	0x31c31c12
+
+#define MDIO_PHYXS_VEND_IF_STATUS		0xe812
+#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_MASK	GENMASK(7, 3)
+#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_KR	0
+#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_KX	1
+#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_XFI	2
+#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_USXGMII	3
+#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_XAUI	4
+#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_SGMII	6
+#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_RXAUI	7
+#define MDIO_PHYXS_VEND_IF_STATUS_TYPE_OCSGMII	10
+
+#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_VEND_PROV_5000BASET_FULL	BIT(11)
+#define MDIO_AN_VEND_PROV_2500BASET_FULL	BIT(10)
+#define MDIO_AN_VEND_PROV_DOWNSHIFT_EN		BIT(4)
+#define MDIO_AN_VEND_PROV_DOWNSHIFT_MASK	GENMASK(3, 0)
+#define MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT	4
+
+#define MDIO_AN_TX_VEND_STATUS1			0xc800
+#define MDIO_AN_TX_VEND_STATUS1_RATE_MASK	GENMASK(3, 1)
+#define MDIO_AN_TX_VEND_STATUS1_10BASET		0
+#define MDIO_AN_TX_VEND_STATUS1_100BASETX	1
+#define MDIO_AN_TX_VEND_STATUS1_1000BASET	2
+#define MDIO_AN_TX_VEND_STATUS1_10GBASET	3
+#define MDIO_AN_TX_VEND_STATUS1_2500BASET	4
+#define MDIO_AN_TX_VEND_STATUS1_5000BASET	5
+#define MDIO_AN_TX_VEND_STATUS1_FULL_DUPLEX	BIT(0)
+
+#define MDIO_AN_TX_VEND_INT_STATUS1		0xcc00
+#define MDIO_AN_TX_VEND_INT_STATUS1_DOWNSHIFT	BIT(1)
+
+#define MDIO_AN_TX_VEND_INT_STATUS2		0xcc01
+#define MDIO_AN_TX_VEND_INT_STATUS2_MASK	BIT(0)
+
+#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)
+#define MDIO_AN_RX_LP_STAT1_SHORT_REACH		BIT(13)
+#define MDIO_AN_RX_LP_STAT1_AQRATE_DOWNSHIFT	BIT(12)
+#define MDIO_AN_RX_LP_STAT1_AQ_PHY		BIT(2)
+
+#define MDIO_AN_RX_LP_STAT4			0xe823
+#define MDIO_AN_RX_LP_STAT4_FW_MAJOR		GENMASK(15, 8)
+#define MDIO_AN_RX_LP_STAT4_FW_MINOR		GENMASK(7, 0)
+
+#define MDIO_AN_RX_VEND_STAT3			0xe832
+#define MDIO_AN_RX_VEND_STAT3_AFR		BIT(0)
+
+/* MDIO_MMD_C22EXT */
+#define MDIO_C22EXT_STAT_SGMII_RX_GOOD_FRAMES		0xd292
+#define MDIO_C22EXT_STAT_SGMII_RX_BAD_FRAMES		0xd294
+#define MDIO_C22EXT_STAT_SGMII_RX_FALSE_CARRIER		0xd297
+#define MDIO_C22EXT_STAT_SGMII_TX_GOOD_FRAMES		0xd313
+#define MDIO_C22EXT_STAT_SGMII_TX_BAD_FRAMES		0xd315
+#define MDIO_C22EXT_STAT_SGMII_TX_FALSE_CARRIER		0xd317
+#define MDIO_C22EXT_STAT_SGMII_TX_COLLISIONS		0xd318
+#define MDIO_C22EXT_STAT_SGMII_TX_LINE_COLLISIONS	0xd319
+#define MDIO_C22EXT_STAT_SGMII_TX_FRAME_ALIGN_ERR	0xd31a
+#define MDIO_C22EXT_STAT_SGMII_TX_RUNT_FRAMES		0xd31b
+
+/* Vendor specific 1, MDIO_MMD_VEND1 */
+#define VEND1_GLOBAL_FW_ID			0x0020
+#define VEND1_GLOBAL_FW_ID_MAJOR		GENMASK(15, 8)
+#define VEND1_GLOBAL_FW_ID_MINOR		GENMASK(7, 0)
+
+#define VEND1_GLOBAL_GEN_STAT2			0xc831
+#define VEND1_GLOBAL_GEN_STAT2_OP_IN_PROG	BIT(15)
+
+/* The following registers all have similar layouts; first the registers... */
+#define VEND1_GLOBAL_CFG_10M			0x0310
+#define VEND1_GLOBAL_CFG_100M			0x031b
+#define VEND1_GLOBAL_CFG_1G			0x031c
+#define VEND1_GLOBAL_CFG_2_5G			0x031d
+#define VEND1_GLOBAL_CFG_5G			0x031e
+#define VEND1_GLOBAL_CFG_10G			0x031f
+/* ...and now the fields */
+#define VEND1_GLOBAL_CFG_RATE_ADAPT		GENMASK(8, 7)
+#define VEND1_GLOBAL_CFG_RATE_ADAPT_NONE	0
+#define VEND1_GLOBAL_CFG_RATE_ADAPT_USX		1
+#define VEND1_GLOBAL_CFG_RATE_ADAPT_PAUSE	2
+
+#define VEND1_GLOBAL_RSVD_STAT1			0xc885
+#define VEND1_GLOBAL_RSVD_STAT1_FW_BUILD_ID	GENMASK(7, 4)
+#define VEND1_GLOBAL_RSVD_STAT1_PROV_ID		GENMASK(3, 0)
+
+#define VEND1_GLOBAL_RSVD_STAT9			0xc88d
+#define VEND1_GLOBAL_RSVD_STAT9_MODE		GENMASK(7, 0)
+#define VEND1_GLOBAL_RSVD_STAT9_1000BT2		0x23
+
+#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)
+
+/* Sleep and timeout for checking if the Processor-Intensive
+ * MDIO operation is finished
+ */
+#define AQR107_OP_IN_PROG_SLEEP		1000
+#define AQR107_OP_IN_PROG_TIMEOUT	100000
+
+struct aqr107_hw_stat {
+	const char *name;
+	int reg;
+	int size;
+};
+
+#define SGMII_STAT(n, r, s) { n, MDIO_C22EXT_STAT_SGMII_ ## r, s }
+static const struct aqr107_hw_stat aqr107_hw_stats[] = {
+	SGMII_STAT("sgmii_rx_good_frames",	    RX_GOOD_FRAMES,	26),
+	SGMII_STAT("sgmii_rx_bad_frames",	    RX_BAD_FRAMES,	26),
+	SGMII_STAT("sgmii_rx_false_carrier_events", RX_FALSE_CARRIER,	 8),
+	SGMII_STAT("sgmii_tx_good_frames",	    TX_GOOD_FRAMES,	26),
+	SGMII_STAT("sgmii_tx_bad_frames",	    TX_BAD_FRAMES,	26),
+	SGMII_STAT("sgmii_tx_false_carrier_events", TX_FALSE_CARRIER,	 8),
+	SGMII_STAT("sgmii_tx_collisions",	    TX_COLLISIONS,	 8),
+	SGMII_STAT("sgmii_tx_line_collisions",	    TX_LINE_COLLISIONS,	 8),
+	SGMII_STAT("sgmii_tx_frame_alignment_err",  TX_FRAME_ALIGN_ERR,	16),
+	SGMII_STAT("sgmii_tx_runt_frames",	    TX_RUNT_FRAMES,	22),
+};
+#define AQR107_SGMII_STAT_SZ ARRAY_SIZE(aqr107_hw_stats)
+
+struct aqr107_priv {
+	u64 sgmii_stats[AQR107_SGMII_STAT_SZ];
+};
+
+static int aqr107_get_sset_count(struct phy_device *phydev)
+{
+	return AQR107_SGMII_STAT_SZ;
+}
+
+static void aqr107_get_strings(struct phy_device *phydev, u8 *data)
+{
+	int i;
+
+	for (i = 0; i < AQR107_SGMII_STAT_SZ; i++)
+		strscpy(data + i * ETH_GSTRING_LEN, aqr107_hw_stats[i].name,
+			ETH_GSTRING_LEN);
+}
+
+static u64 aqr107_get_stat(struct phy_device *phydev, int index)
+{
+	const struct aqr107_hw_stat *stat = aqr107_hw_stats + index;
+	int len_l = min(stat->size, 16);
+	int len_h = stat->size - len_l;
+	u64 ret;
+	int val;
+
+	val = phy_read_mmd(phydev, MDIO_MMD_C22EXT, stat->reg);
+	if (val < 0)
+		return U64_MAX;
+
+	ret = val & GENMASK(len_l - 1, 0);
+	if (len_h) {
+		val = phy_read_mmd(phydev, MDIO_MMD_C22EXT, stat->reg + 1);
+		if (val < 0)
+			return U64_MAX;
+
+		ret += (val & GENMASK(len_h - 1, 0)) << 16;
+	}
+
+	return ret;
+}
+
+static void aqr107_get_stats(struct phy_device *phydev,
+			     struct ethtool_stats *stats, u64 *data)
+{
+	struct aqr107_priv *priv = phydev->priv;
+	u64 val;
+	int i;
+
+	for (i = 0; i < AQR107_SGMII_STAT_SZ; i++) {
+		val = aqr107_get_stat(phydev, i);
+		if (val == U64_MAX)
+			phydev_err(phydev, "Reading HW Statistics failed for %s\n",
+				   aqr107_hw_stats[i].name);
+		else
+			priv->sgmii_stats[i] += val;
+
+		data[i] = priv->sgmii_stats[i];
+	}
+}
+
+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;
+
+	/* Handle the case when the 2.5G and 5G speeds are not advertised */
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
+			      phydev->advertising))
+		reg |= MDIO_AN_VEND_PROV_2500BASET_FULL;
+
+	if (linkmode_test_bit(ETHTOOL_LINK_MODE_5000baseT_Full_BIT,
+			      phydev->advertising))
+		reg |= MDIO_AN_VEND_PROV_5000BASET_FULL;
+
+	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 |
+				     MDIO_AN_VEND_PROV_2500BASET_FULL |
+				     MDIO_AN_VEND_PROV_5000BASET_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)
+{
+	bool en = phydev->interrupts == PHY_INTERRUPT_ENABLED;
+	int err;
+
+	if (en) {
+		/* Clear any pending interrupts before enabling them */
+		err = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_INT_STATUS2);
+		if (err < 0)
+			return err;
+	}
+
+	err = phy_write_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_INT_MASK2,
+			    en ? MDIO_AN_TX_VEND_INT_MASK2_LINK : 0);
+	if (err < 0)
+		return err;
+
+	err = phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_INT_STD_MASK,
+			    en ? VEND1_GLOBAL_INT_STD_MASK_ALL : 0);
+	if (err < 0)
+		return err;
+
+	err = phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_INT_VEND_MASK,
+			    en ? VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3 |
+			    VEND1_GLOBAL_INT_VEND_MASK_AN : 0);
+	if (err < 0)
+		return err;
+
+	if (!en) {
+		/* Clear any pending interrupts after we have disabled them */
+		err = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_INT_STATUS2);
+		if (err < 0)
+			return err;
+	}
+
+	return 0;
+}
+
+static irqreturn_t aqr_handle_interrupt(struct phy_device *phydev)
+{
+	int irq_status;
+
+	irq_status = phy_read_mmd(phydev, MDIO_MMD_AN,
+				  MDIO_AN_TX_VEND_INT_STATUS2);
+	if (irq_status < 0) {
+		phy_error(phydev);
+		return IRQ_NONE;
+	}
+
+	if (!(irq_status & MDIO_AN_TX_VEND_INT_STATUS2_MASK))
+		return IRQ_NONE;
+
+	phy_trigger_machine(phydev);
+
+	return IRQ_HANDLED;
+}
+
+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 aqr107_read_rate(struct phy_device *phydev)
+{
+	u32 config_reg;
+	int val;
+
+	val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_TX_VEND_STATUS1);
+	if (val < 0)
+		return val;
+
+	if (val & MDIO_AN_TX_VEND_STATUS1_FULL_DUPLEX)
+		phydev->duplex = DUPLEX_FULL;
+	else
+		phydev->duplex = DUPLEX_HALF;
+
+	switch (FIELD_GET(MDIO_AN_TX_VEND_STATUS1_RATE_MASK, val)) {
+	case MDIO_AN_TX_VEND_STATUS1_10BASET:
+		phydev->speed = SPEED_10;
+		config_reg = VEND1_GLOBAL_CFG_10M;
+		break;
+	case MDIO_AN_TX_VEND_STATUS1_100BASETX:
+		phydev->speed = SPEED_100;
+		config_reg = VEND1_GLOBAL_CFG_100M;
+		break;
+	case MDIO_AN_TX_VEND_STATUS1_1000BASET:
+		phydev->speed = SPEED_1000;
+		config_reg = VEND1_GLOBAL_CFG_1G;
+		break;
+	case MDIO_AN_TX_VEND_STATUS1_2500BASET:
+		phydev->speed = SPEED_2500;
+		config_reg = VEND1_GLOBAL_CFG_2_5G;
+		break;
+	case MDIO_AN_TX_VEND_STATUS1_5000BASET:
+		phydev->speed = SPEED_5000;
+		config_reg = VEND1_GLOBAL_CFG_5G;
+		break;
+	case MDIO_AN_TX_VEND_STATUS1_10GBASET:
+		phydev->speed = SPEED_10000;
+		config_reg = VEND1_GLOBAL_CFG_10G;
+		break;
+	default:
+		phydev->speed = SPEED_UNKNOWN;
+		return 0;
+	}
+
+	val = phy_read_mmd(phydev, MDIO_MMD_VEND1, config_reg);
+	if (val < 0)
+		return val;
+
+	if (FIELD_GET(VEND1_GLOBAL_CFG_RATE_ADAPT, val) ==
+	    VEND1_GLOBAL_CFG_RATE_ADAPT_PAUSE)
+		phydev->rate_matching = RATE_MATCH_PAUSE;
+	else
+		phydev->rate_matching = RATE_MATCH_NONE;
+
+	return 0;
+}
+
+static int aqr107_read_status(struct phy_device *phydev)
+{
+	int val, ret;
+
+	ret = aqr_read_status(phydev);
+	if (ret)
+		return ret;
+
+	if (!phydev->link || phydev->autoneg == AUTONEG_DISABLE)
+		return 0;
+
+	val = phy_read_mmd(phydev, MDIO_MMD_PHYXS, MDIO_PHYXS_VEND_IF_STATUS);
+	if (val < 0)
+		return val;
+
+	switch (FIELD_GET(MDIO_PHYXS_VEND_IF_STATUS_TYPE_MASK, val)) {
+	case MDIO_PHYXS_VEND_IF_STATUS_TYPE_KR:
+		phydev->interface = PHY_INTERFACE_MODE_10GKR;
+		break;
+	case MDIO_PHYXS_VEND_IF_STATUS_TYPE_KX:
+		phydev->interface = PHY_INTERFACE_MODE_1000BASEKX;
+		break;
+	case MDIO_PHYXS_VEND_IF_STATUS_TYPE_XFI:
+		phydev->interface = PHY_INTERFACE_MODE_10GBASER;
+		break;
+	case MDIO_PHYXS_VEND_IF_STATUS_TYPE_USXGMII:
+		phydev->interface = PHY_INTERFACE_MODE_USXGMII;
+		break;
+	case MDIO_PHYXS_VEND_IF_STATUS_TYPE_XAUI:
+		phydev->interface = PHY_INTERFACE_MODE_XAUI;
+		break;
+	case MDIO_PHYXS_VEND_IF_STATUS_TYPE_SGMII:
+		phydev->interface = PHY_INTERFACE_MODE_SGMII;
+		break;
+	case MDIO_PHYXS_VEND_IF_STATUS_TYPE_RXAUI:
+		phydev->interface = PHY_INTERFACE_MODE_RXAUI;
+		break;
+	case MDIO_PHYXS_VEND_IF_STATUS_TYPE_OCSGMII:
+		phydev->interface = PHY_INTERFACE_MODE_2500BASEX;
+		break;
+	default:
+		phydev->interface = PHY_INTERFACE_MODE_NA;
+		break;
+	}
+
+	/* Read possibly downshifted rate from vendor register */
+	return aqr107_read_rate(phydev);
+}
+
+static int aqr107_get_downshift(struct phy_device *phydev, u8 *data)
+{
+	int val, cnt, enable;
+
+	val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_VEND_PROV);
+	if (val < 0)
+		return val;
+
+	enable = FIELD_GET(MDIO_AN_VEND_PROV_DOWNSHIFT_EN, val);
+	cnt = FIELD_GET(MDIO_AN_VEND_PROV_DOWNSHIFT_MASK, val);
+
+	*data = enable && cnt ? cnt : DOWNSHIFT_DEV_DISABLE;
+
+	return 0;
+}
+
+static int aqr107_set_downshift(struct phy_device *phydev, u8 cnt)
+{
+	int val = 0;
+
+	if (!FIELD_FIT(MDIO_AN_VEND_PROV_DOWNSHIFT_MASK, cnt))
+		return -E2BIG;
+
+	if (cnt != DOWNSHIFT_DEV_DISABLE) {
+		val = MDIO_AN_VEND_PROV_DOWNSHIFT_EN;
+		val |= FIELD_PREP(MDIO_AN_VEND_PROV_DOWNSHIFT_MASK, cnt);
+	}
+
+	return phy_modify_mmd(phydev, MDIO_MMD_AN, MDIO_AN_VEND_PROV,
+			      MDIO_AN_VEND_PROV_DOWNSHIFT_EN |
+			      MDIO_AN_VEND_PROV_DOWNSHIFT_MASK, val);
+}
+
+static int aqr107_get_tunable(struct phy_device *phydev,
+			      struct ethtool_tunable *tuna, void *data)
+{
+	switch (tuna->id) {
+	case ETHTOOL_PHY_DOWNSHIFT:
+		return aqr107_get_downshift(phydev, data);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int aqr107_set_tunable(struct phy_device *phydev,
+			      struct ethtool_tunable *tuna, const void *data)
+{
+	switch (tuna->id) {
+	case ETHTOOL_PHY_DOWNSHIFT:
+		return aqr107_set_downshift(phydev, *(const u8 *)data);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+/* If we configure settings whilst firmware is still initializing the chip,
+ * then these settings may be overwritten. Therefore make sure chip
+ * initialization has completed. Use presence of the firmware ID as
+ * indicator for initialization having completed.
+ * The chip also provides a "reset completed" bit, but it's cleared after
+ * read. Therefore function would time out if called again.
+ */
+static int aqr107_wait_reset_complete(struct phy_device *phydev)
+{
+	int val;
+
+	return phy_read_mmd_poll_timeout(phydev, MDIO_MMD_VEND1,
+					 VEND1_GLOBAL_FW_ID, val, val != 0,
+					 20000, 2000000, false);
+}
+
+static void aqr107_chip_info(struct phy_device *phydev)
+{
+	u8 fw_major, fw_minor, build_id, prov_id;
+	int val;
+
+	val = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_FW_ID);
+	if (val < 0)
+		return;
+
+	fw_major = FIELD_GET(VEND1_GLOBAL_FW_ID_MAJOR, val);
+	fw_minor = FIELD_GET(VEND1_GLOBAL_FW_ID_MINOR, val);
+
+	val = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_RSVD_STAT1);
+	if (val < 0)
+		return;
+
+	build_id = FIELD_GET(VEND1_GLOBAL_RSVD_STAT1_FW_BUILD_ID, val);
+	prov_id = FIELD_GET(VEND1_GLOBAL_RSVD_STAT1_PROV_ID, val);
+
+	phydev_dbg(phydev, "FW %u.%u, Build %u, Provisioning %u\n",
+		   fw_major, fw_minor, build_id, prov_id);
+}
+
+static int aqr107_config_init(struct phy_device *phydev)
+{
+	int ret;
+
+	/* Check that the PHY interface type is compatible */
+	if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
+	    phydev->interface != PHY_INTERFACE_MODE_1000BASEKX &&
+	    phydev->interface != PHY_INTERFACE_MODE_2500BASEX &&
+	    phydev->interface != PHY_INTERFACE_MODE_XGMII &&
+	    phydev->interface != PHY_INTERFACE_MODE_USXGMII &&
+	    phydev->interface != PHY_INTERFACE_MODE_10GKR &&
+	    phydev->interface != PHY_INTERFACE_MODE_10GBASER &&
+	    phydev->interface != PHY_INTERFACE_MODE_XAUI &&
+	    phydev->interface != PHY_INTERFACE_MODE_RXAUI)
+		return -ENODEV;
+
+	WARN(phydev->interface == PHY_INTERFACE_MODE_XGMII,
+	     "Your devicetree is out of date, please update it. The AQR107 family doesn't support XGMII, maybe you mean USXGMII.\n");
+
+	ret = aqr107_wait_reset_complete(phydev);
+	if (!ret)
+		aqr107_chip_info(phydev);
+
+	return aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
+}
+
+static int aqcs109_config_init(struct phy_device *phydev)
+{
+	int ret;
+
+	/* Check that the PHY interface type is compatible */
+	if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
+	    phydev->interface != PHY_INTERFACE_MODE_2500BASEX)
+		return -ENODEV;
+
+	ret = aqr107_wait_reset_complete(phydev);
+	if (!ret)
+		aqr107_chip_info(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.
+	 */
+	phy_set_max_speed(phydev, SPEED_2500);
+
+	return aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
+}
+
+static void aqr107_link_change_notify(struct phy_device *phydev)
+{
+	u8 fw_major, fw_minor;
+	bool downshift, short_reach, afr;
+	int mode, val;
+
+	if (phydev->state != PHY_RUNNING || phydev->autoneg == AUTONEG_DISABLE)
+		return;
+
+	val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_LP_STAT1);
+	/* call failed or link partner is no Aquantia PHY */
+	if (val < 0 || !(val & MDIO_AN_RX_LP_STAT1_AQ_PHY))
+		return;
+
+	short_reach = val & MDIO_AN_RX_LP_STAT1_SHORT_REACH;
+	downshift = val & MDIO_AN_RX_LP_STAT1_AQRATE_DOWNSHIFT;
+
+	val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_LP_STAT4);
+	if (val < 0)
+		return;
+
+	fw_major = FIELD_GET(MDIO_AN_RX_LP_STAT4_FW_MAJOR, val);
+	fw_minor = FIELD_GET(MDIO_AN_RX_LP_STAT4_FW_MINOR, val);
+
+	val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_RX_VEND_STAT3);
+	if (val < 0)
+		return;
+
+	afr = val & MDIO_AN_RX_VEND_STAT3_AFR;
+
+	phydev_dbg(phydev, "Link partner is Aquantia PHY, FW %u.%u%s%s%s\n",
+		   fw_major, fw_minor,
+		   short_reach ? ", short reach mode" : "",
+		   downshift ? ", fast-retrain downshift advertised" : "",
+		   afr ? ", fast reframe advertised" : "");
+
+	val = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_GLOBAL_RSVD_STAT9);
+	if (val < 0)
+		return;
+
+	mode = FIELD_GET(VEND1_GLOBAL_RSVD_STAT9_MODE, val);
+	if (mode == VEND1_GLOBAL_RSVD_STAT9_1000BT2)
+		phydev_info(phydev, "Aquantia 1000Base-T2 mode active\n");
+}
+
+static int aqr107_wait_processor_intensive_op(struct phy_device *phydev)
+{
+	int val, err;
+
+	/* The datasheet notes to wait at least 1ms after issuing a
+	 * processor intensive operation before checking.
+	 * We cannot use the 'sleep_before_read' parameter of read_poll_timeout
+	 * because that just determines the maximum time slept, not the minimum.
+	 */
+	usleep_range(1000, 5000);
+
+	err = phy_read_mmd_poll_timeout(phydev, MDIO_MMD_VEND1,
+					VEND1_GLOBAL_GEN_STAT2, val,
+					!(val & VEND1_GLOBAL_GEN_STAT2_OP_IN_PROG),
+					AQR107_OP_IN_PROG_SLEEP,
+					AQR107_OP_IN_PROG_TIMEOUT, false);
+	if (err) {
+		phydev_err(phydev, "timeout: processor-intensive MDIO operation\n");
+		return err;
+	}
+
+	return 0;
+}
+
+static int aqr107_get_rate_matching(struct phy_device *phydev,
+				    phy_interface_t iface)
+{
+	if (iface == PHY_INTERFACE_MODE_10GBASER ||
+	    iface == PHY_INTERFACE_MODE_2500BASEX ||
+	    iface == PHY_INTERFACE_MODE_NA)
+		return RATE_MATCH_PAUSE;
+	return RATE_MATCH_NONE;
+}
+
+static int aqr107_suspend(struct phy_device *phydev)
+{
+	int err;
+
+	err = phy_set_bits_mmd(phydev, MDIO_MMD_VEND1, MDIO_CTRL1,
+			       MDIO_CTRL1_LPOWER);
+	if (err)
+		return err;
+
+	return aqr107_wait_processor_intensive_op(phydev);
+}
+
+static int aqr107_resume(struct phy_device *phydev)
+{
+	int err;
+
+	err = phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1, MDIO_CTRL1,
+				 MDIO_CTRL1_LPOWER);
+	if (err)
+		return err;
+
+	return aqr107_wait_processor_intensive_op(phydev);
+}
+
+static int aqr107_probe(struct phy_device *phydev)
+{
+	phydev->priv = devm_kzalloc(&phydev->mdio.dev,
+				    sizeof(struct aqr107_priv), GFP_KERNEL);
+	if (!phydev->priv)
+		return -ENOMEM;
+
+	return aqr_hwmon_probe(phydev);
+}
+
+static struct phy_driver aqr_driver[] = {
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQ1202),
+	.name		= "Aquantia AQ1202",
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.read_status	= aqr_read_status,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQ2104),
+	.name		= "Aquantia AQ2104",
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.read_status	= aqr_read_status,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQR105),
+	.name		= "Aquantia AQR105",
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.read_status	= aqr_read_status,
+	.suspend	= aqr107_suspend,
+	.resume		= aqr107_resume,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQR106),
+	.name		= "Aquantia AQR106",
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.read_status	= aqr_read_status,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQR107),
+	.name		= "Aquantia AQR107",
+	.probe		= aqr107_probe,
+	.get_rate_matching = aqr107_get_rate_matching,
+	.config_init	= aqr107_config_init,
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.read_status	= aqr107_read_status,
+	.get_tunable    = aqr107_get_tunable,
+	.set_tunable    = aqr107_set_tunable,
+	.suspend	= aqr107_suspend,
+	.resume		= aqr107_resume,
+	.get_sset_count	= aqr107_get_sset_count,
+	.get_strings	= aqr107_get_strings,
+	.get_stats	= aqr107_get_stats,
+	.link_change_notify = aqr107_link_change_notify,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQCS109),
+	.name		= "Aquantia AQCS109",
+	.probe		= aqr107_probe,
+	.get_rate_matching = aqr107_get_rate_matching,
+	.config_init	= aqcs109_config_init,
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.read_status	= aqr107_read_status,
+	.get_tunable    = aqr107_get_tunable,
+	.set_tunable    = aqr107_set_tunable,
+	.suspend	= aqr107_suspend,
+	.resume		= aqr107_resume,
+	.get_sset_count	= aqr107_get_sset_count,
+	.get_strings	= aqr107_get_strings,
+	.get_stats	= aqr107_get_stats,
+	.link_change_notify = aqr107_link_change_notify,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQR405),
+	.name		= "Aquantia AQR405",
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.read_status	= aqr_read_status,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQR112),
+	.name		= "Aquantia AQR112",
+	.probe		= aqr107_probe,
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.get_tunable    = aqr107_get_tunable,
+	.set_tunable    = aqr107_set_tunable,
+	.suspend	= aqr107_suspend,
+	.resume		= aqr107_resume,
+	.read_status	= aqr107_read_status,
+	.get_rate_matching = aqr107_get_rate_matching,
+	.get_sset_count = aqr107_get_sset_count,
+	.get_strings	= aqr107_get_strings,
+	.get_stats	= aqr107_get_stats,
+	.link_change_notify = aqr107_link_change_notify,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQR412),
+	.name		= "Aquantia AQR412",
+	.probe		= aqr107_probe,
+	.config_aneg    = aqr_config_aneg,
+	.config_intr	= aqr_config_intr,
+	.handle_interrupt = aqr_handle_interrupt,
+	.get_tunable    = aqr107_get_tunable,
+	.set_tunable    = aqr107_set_tunable,
+	.suspend	= aqr107_suspend,
+	.resume		= aqr107_resume,
+	.read_status	= aqr107_read_status,
+	.get_rate_matching = aqr107_get_rate_matching,
+	.get_sset_count = aqr107_get_sset_count,
+	.get_strings	= aqr107_get_strings,
+	.get_stats	= aqr107_get_stats,
+	.link_change_notify = aqr107_link_change_notify,
+},
+{
+	PHY_ID_MATCH_MODEL(PHY_ID_AQR113C),
+	.name           = "Aquantia AQR113C",
+	.probe          = aqr107_probe,
+	.get_rate_matching = aqr107_get_rate_matching,
+	.config_init    = aqr107_config_init,
+	.config_aneg    = aqr_config_aneg,
+	.config_intr    = aqr_config_intr,
+	.handle_interrupt       = aqr_handle_interrupt,
+	.read_status    = aqr107_read_status,
+	.get_tunable    = aqr107_get_tunable,
+	.set_tunable    = aqr107_set_tunable,
+	.suspend        = aqr107_suspend,
+	.resume         = aqr107_resume,
+	.get_sset_count = aqr107_get_sset_count,
+	.get_strings    = aqr107_get_strings,
+	.get_stats      = aqr107_get_stats,
+	.link_change_notify = aqr107_link_change_notify,
+},
+};
+
+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) },
+	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR112) },
+	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR412) },
+	{ PHY_ID_MATCH_MODEL(PHY_ID_AQR113C) },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(mdio, aqr_tbl);
+
+MODULE_DESCRIPTION("Aquantia PHY driver");
+MODULE_AUTHOR("Shaohui Xie <Shaohui.Xie@freescale.com>");
+MODULE_LICENSE("GPL v2");