--- /dev/null
+/*
+ * Driver for Vitesse PHYs
+ *
+ * Author: Kriston Carson
+ *
+ * Copyright (c) 2005, 2009, 2011 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it 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.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+
+/* Vitesse Extended Page Magic Register(s) */
+#define MII_VSC82X4_EXT_PAGE_16E 0x10
+#define MII_VSC82X4_EXT_PAGE_17E 0x11
+#define MII_VSC82X4_EXT_PAGE_18E 0x12
+
+/* Vitesse Extended Control Register 1 */
+#define MII_VSC8244_EXT_CON1 0x17
+#define MII_VSC8244_EXTCON1_INIT 0x0000
+#define MII_VSC8244_EXTCON1_TX_SKEW_MASK 0x0c00
+#define MII_VSC8244_EXTCON1_RX_SKEW_MASK 0x0300
+#define MII_VSC8244_EXTCON1_TX_SKEW 0x0800
+#define MII_VSC8244_EXTCON1_RX_SKEW 0x0200
+
+/* Vitesse Interrupt Mask Register */
+#define MII_VSC8244_IMASK 0x19
+#define MII_VSC8244_IMASK_IEN 0x8000
+#define MII_VSC8244_IMASK_SPEED 0x4000
+#define MII_VSC8244_IMASK_LINK 0x2000
+#define MII_VSC8244_IMASK_DUPLEX 0x1000
+#define MII_VSC8244_IMASK_MASK 0xf000
+
+#define MII_VSC8221_IMASK_MASK 0xa000
+
+/* Vitesse Interrupt Status Register */
+#define MII_VSC8244_ISTAT 0x1a
+#define MII_VSC8244_ISTAT_STATUS 0x8000
+#define MII_VSC8244_ISTAT_SPEED 0x4000
+#define MII_VSC8244_ISTAT_LINK 0x2000
+#define MII_VSC8244_ISTAT_DUPLEX 0x1000
+
+/* Vitesse Auxiliary Control/Status Register */
+#define MII_VSC8244_AUX_CONSTAT 0x1c
+#define MII_VSC8244_AUXCONSTAT_INIT 0x0000
+#define MII_VSC8244_AUXCONSTAT_DUPLEX 0x0020
+#define MII_VSC8244_AUXCONSTAT_SPEED 0x0018
+#define MII_VSC8244_AUXCONSTAT_GBIT 0x0010
+#define MII_VSC8244_AUXCONSTAT_100 0x0008
+
+#define MII_VSC8221_AUXCONSTAT_INIT 0x0004 /* need to set this bit? */
+#define MII_VSC8221_AUXCONSTAT_RESERVED 0x0004
+
+/* Vitesse Extended Page Access Register */
+#define MII_VSC82X4_EXT_PAGE_ACCESS 0x1f
+
+#define PHY_ID_VSC8234 0x000fc620
+#define PHY_ID_VSC8244 0x000fc6c0
+#define PHY_ID_VSC8514 0x00070670
+#define PHY_ID_VSC8574 0x000704a0
+#define PHY_ID_VSC8662 0x00070660
+#define PHY_ID_VSC8221 0x000fc550
+#define PHY_ID_VSC8211 0x000fc4b0
+
+MODULE_DESCRIPTION("Vitesse PHY driver");
+MODULE_AUTHOR("Kriston Carson");
+MODULE_LICENSE("GPL");
+
+static int vsc824x_add_skew(struct phy_device *phydev)
+{
+ int err;
+ int extcon;
+
+ extcon = phy_read(phydev, MII_VSC8244_EXT_CON1);
+
+ if (extcon < 0)
+ return extcon;
+
+ extcon &= ~(MII_VSC8244_EXTCON1_TX_SKEW_MASK |
+ MII_VSC8244_EXTCON1_RX_SKEW_MASK);
+
+ extcon |= (MII_VSC8244_EXTCON1_TX_SKEW |
+ MII_VSC8244_EXTCON1_RX_SKEW);
+
+ err = phy_write(phydev, MII_VSC8244_EXT_CON1, extcon);
+
+ return err;
+}
+
+static int vsc824x_config_init(struct phy_device *phydev)
+{
+ int err;
+
+ err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT,
+ MII_VSC8244_AUXCONSTAT_INIT);
+ if (err < 0)
+ return err;
+
+ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
+ err = vsc824x_add_skew(phydev);
+
+ return err;
+}
+
+static int vsc824x_ack_interrupt(struct phy_device *phydev)
+{
+ int err = 0;
+
+ /* Don't bother to ACK the interrupts if interrupts
+ * are disabled. The 824x cannot clear the interrupts
+ * if they are disabled.
+ */
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+ err = phy_read(phydev, MII_VSC8244_ISTAT);
+
+ return (err < 0) ? err : 0;
+}
+
+static int vsc82xx_config_intr(struct phy_device *phydev)
+{
+ int err;
+
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+ err = phy_write(phydev, MII_VSC8244_IMASK,
+ (phydev->drv->phy_id == PHY_ID_VSC8234 ||
+ phydev->drv->phy_id == PHY_ID_VSC8244 ||
+ phydev->drv->phy_id == PHY_ID_VSC8514 ||
+ phydev->drv->phy_id == PHY_ID_VSC8574) ?
+ MII_VSC8244_IMASK_MASK :
+ MII_VSC8221_IMASK_MASK);
+ else {
+ /* The Vitesse PHY cannot clear the interrupt
+ * once it has disabled them, so we clear them first
+ */
+ err = phy_read(phydev, MII_VSC8244_ISTAT);
+
+ if (err < 0)
+ return err;
+
+ err = phy_write(phydev, MII_VSC8244_IMASK, 0);
+ }
+
+ return err;
+}
+
+static int vsc8221_config_init(struct phy_device *phydev)
+{
+ int err;
+
+ err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT,
+ MII_VSC8221_AUXCONSTAT_INIT);
+ return err;
+
+ /* Perhaps we should set EXT_CON1 based on the interface?
+ * Options are 802.3Z SerDes or SGMII
+ */
+}
+
+/* vsc82x4_config_autocross_enable - Enable auto MDI/MDI-X for forced links
+ * @phydev: target phy_device struct
+ *
+ * Enable auto MDI/MDI-X when in 10/100 forced link speeds by writing
+ * special values in the VSC8234/VSC8244 extended reserved registers
+ */
+static int vsc82x4_config_autocross_enable(struct phy_device *phydev)
+{
+ int ret;
+
+ if (phydev->autoneg == AUTONEG_ENABLE || phydev->speed > SPEED_100)
+ return 0;
+
+ /* map extended registers set 0x10 - 0x1e */
+ ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_ACCESS, 0x52b5);
+ if (ret >= 0)
+ ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_18E, 0x0012);
+ if (ret >= 0)
+ ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_17E, 0x2803);
+ if (ret >= 0)
+ ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_16E, 0x87fa);
+ /* map standard registers set 0x10 - 0x1e */
+ if (ret >= 0)
+ ret = phy_write(phydev, MII_VSC82X4_EXT_PAGE_ACCESS, 0x0000);
+ else
+ phy_write(phydev, MII_VSC82X4_EXT_PAGE_ACCESS, 0x0000);
+
+ return ret;
+}
+
+/* vsc82x4_config_aneg - restart auto-negotiation or write BMCR
+ * @phydev: target phy_device struct
+ *
+ * Description: If auto-negotiation is enabled, we configure the
+ * advertising, and then restart auto-negotiation. If it is not
+ * enabled, then we write the BMCR and also start the auto
+ * MDI/MDI-X feature
+ */
+static int vsc82x4_config_aneg(struct phy_device *phydev)
+{
+ int ret;
+
+ /* Enable auto MDI/MDI-X when in 10/100 forced link speeds by
+ * writing special values in the VSC8234 extended reserved registers
+ */
+ if (phydev->autoneg != AUTONEG_ENABLE && phydev->speed <= SPEED_100) {
+ ret = genphy_setup_forced(phydev);
+
+ if (ret < 0) /* error */
+ return ret;
+
+ return vsc82x4_config_autocross_enable(phydev);
+ }
+
+ return genphy_config_aneg(phydev);
+}
+
+/* Vitesse 82xx */
+static struct phy_driver vsc82xx_driver[] = {
+{
+ .phy_id = PHY_ID_VSC8234,
+ .name = "Vitesse VSC8234",
+ .phy_id_mask = 0x000ffff0,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &vsc824x_config_init,
+ .config_aneg = &vsc82x4_config_aneg,
+ .read_status = &genphy_read_status,
+ .ack_interrupt = &vsc824x_ack_interrupt,
+ .config_intr = &vsc82xx_config_intr,
+ .driver = { .owner = THIS_MODULE,},
+}, {
+ .phy_id = PHY_ID_VSC8244,
+ .name = "Vitesse VSC8244",
+ .phy_id_mask = 0x000fffc0,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &vsc824x_config_init,
+ .config_aneg = &vsc82x4_config_aneg,
+ .read_status = &genphy_read_status,
+ .ack_interrupt = &vsc824x_ack_interrupt,
+ .config_intr = &vsc82xx_config_intr,
+ .driver = { .owner = THIS_MODULE,},
+}, {
+ .phy_id = PHY_ID_VSC8514,
+ .name = "Vitesse VSC8514",
+ .phy_id_mask = 0x000ffff0,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &vsc824x_config_init,
+ .config_aneg = &vsc82x4_config_aneg,
+ .read_status = &genphy_read_status,
+ .ack_interrupt = &vsc824x_ack_interrupt,
+ .config_intr = &vsc82xx_config_intr,
+ .driver = { .owner = THIS_MODULE,},
+}, {
+ .phy_id = PHY_ID_VSC8574,
+ .name = "Vitesse VSC8574",
+ .phy_id_mask = 0x000ffff0,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &vsc824x_config_init,
+ .config_aneg = &vsc82x4_config_aneg,
+ .read_status = &genphy_read_status,
+ .ack_interrupt = &vsc824x_ack_interrupt,
+ .config_intr = &vsc82xx_config_intr,
+ .driver = { .owner = THIS_MODULE,},
+}, {
+ .phy_id = PHY_ID_VSC8662,
+ .name = "Vitesse VSC8662",
+ .phy_id_mask = 0x000ffff0,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &vsc824x_config_init,
+ .config_aneg = &vsc82x4_config_aneg,
+ .read_status = &genphy_read_status,
+ .ack_interrupt = &vsc824x_ack_interrupt,
+ .config_intr = &vsc82xx_config_intr,
+ .driver = { .owner = THIS_MODULE,},
+}, {
+ /* Vitesse 8221 */
+ .phy_id = PHY_ID_VSC8221,
+ .phy_id_mask = 0x000ffff0,
+ .name = "Vitesse VSC8221",
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &vsc8221_config_init,
+ .config_aneg = &genphy_config_aneg,
+ .read_status = &genphy_read_status,
+ .ack_interrupt = &vsc824x_ack_interrupt,
+ .config_intr = &vsc82xx_config_intr,
+ .driver = { .owner = THIS_MODULE,},
+}, {
+ /* Vitesse 8211 */
+ .phy_id = PHY_ID_VSC8211,
+ .phy_id_mask = 0x000ffff0,
+ .name = "Vitesse VSC8211",
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &vsc8221_config_init,
+ .config_aneg = &genphy_config_aneg,
+ .read_status = &genphy_read_status,
+ .ack_interrupt = &vsc824x_ack_interrupt,
+ .config_intr = &vsc82xx_config_intr,
+ .driver = { .owner = THIS_MODULE,},
+} };
+
+module_phy_driver(vsc82xx_driver);
+
+static struct mdio_device_id __maybe_unused vitesse_tbl[] = {
+ { PHY_ID_VSC8234, 0x000ffff0 },
+ { PHY_ID_VSC8244, 0x000fffc0 },
+ { PHY_ID_VSC8514, 0x000ffff0 },
+ { PHY_ID_VSC8574, 0x000ffff0 },
+ { PHY_ID_VSC8662, 0x000ffff0 },
+ { PHY_ID_VSC8221, 0x000ffff0 },
+ { PHY_ID_VSC8211, 0x000ffff0 },
+ { }
+};
+
+MODULE_DEVICE_TABLE(mdio, vitesse_tbl);
Code Review / kvmfornfv.git / blobdiff