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154 lines
3.6 KiB
154 lines
3.6 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* drivers/net/phy/cicada.c |
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* |
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* Driver for Cicada PHYs |
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* |
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* Author: Andy Fleming |
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* |
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* Copyright (c) 2004 Freescale Semiconductor, Inc. |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/string.h> |
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#include <linux/errno.h> |
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#include <linux/unistd.h> |
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#include <linux/interrupt.h> |
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#include <linux/init.h> |
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#include <linux/delay.h> |
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#include <linux/netdevice.h> |
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#include <linux/etherdevice.h> |
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#include <linux/skbuff.h> |
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#include <linux/spinlock.h> |
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#include <linux/mm.h> |
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#include <linux/module.h> |
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#include <linux/mii.h> |
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#include <linux/ethtool.h> |
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#include <linux/phy.h> |
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#include <linux/io.h> |
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#include <asm/irq.h> |
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#include <linux/uaccess.h> |
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/* Cicada Extended Control Register 1 */ |
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#define MII_CIS8201_EXT_CON1 0x17 |
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#define MII_CIS8201_EXTCON1_INIT 0x0000 |
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/* Cicada Interrupt Mask Register */ |
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#define MII_CIS8201_IMASK 0x19 |
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#define MII_CIS8201_IMASK_IEN 0x8000 |
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#define MII_CIS8201_IMASK_SPEED 0x4000 |
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#define MII_CIS8201_IMASK_LINK 0x2000 |
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#define MII_CIS8201_IMASK_DUPLEX 0x1000 |
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#define MII_CIS8201_IMASK_MASK 0xf000 |
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/* Cicada Interrupt Status Register */ |
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#define MII_CIS8201_ISTAT 0x1a |
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#define MII_CIS8201_ISTAT_STATUS 0x8000 |
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#define MII_CIS8201_ISTAT_SPEED 0x4000 |
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#define MII_CIS8201_ISTAT_LINK 0x2000 |
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#define MII_CIS8201_ISTAT_DUPLEX 0x1000 |
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/* Cicada Auxiliary Control/Status Register */ |
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#define MII_CIS8201_AUX_CONSTAT 0x1c |
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#define MII_CIS8201_AUXCONSTAT_INIT 0x0004 |
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#define MII_CIS8201_AUXCONSTAT_DUPLEX 0x0020 |
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#define MII_CIS8201_AUXCONSTAT_SPEED 0x0018 |
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#define MII_CIS8201_AUXCONSTAT_GBIT 0x0010 |
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#define MII_CIS8201_AUXCONSTAT_100 0x0008 |
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MODULE_DESCRIPTION("Cicadia PHY driver"); |
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MODULE_AUTHOR("Andy Fleming"); |
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MODULE_LICENSE("GPL"); |
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static int cis820x_config_init(struct phy_device *phydev) |
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{ |
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int err; |
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err = phy_write(phydev, MII_CIS8201_AUX_CONSTAT, |
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MII_CIS8201_AUXCONSTAT_INIT); |
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if (err < 0) |
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return err; |
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err = phy_write(phydev, MII_CIS8201_EXT_CON1, |
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MII_CIS8201_EXTCON1_INIT); |
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return err; |
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} |
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static int cis820x_ack_interrupt(struct phy_device *phydev) |
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{ |
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int err = phy_read(phydev, MII_CIS8201_ISTAT); |
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return (err < 0) ? err : 0; |
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} |
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static int cis820x_config_intr(struct phy_device *phydev) |
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{ |
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int err; |
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if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { |
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err = cis820x_ack_interrupt(phydev); |
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if (err) |
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return err; |
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err = phy_write(phydev, MII_CIS8201_IMASK, |
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MII_CIS8201_IMASK_MASK); |
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} else { |
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err = phy_write(phydev, MII_CIS8201_IMASK, 0); |
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if (err) |
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return err; |
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err = cis820x_ack_interrupt(phydev); |
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} |
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return err; |
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} |
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static irqreturn_t cis820x_handle_interrupt(struct phy_device *phydev) |
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{ |
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int irq_status; |
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irq_status = phy_read(phydev, MII_CIS8201_ISTAT); |
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if (irq_status < 0) { |
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phy_error(phydev); |
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return IRQ_NONE; |
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} |
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if (!(irq_status & MII_CIS8201_IMASK_MASK)) |
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return IRQ_NONE; |
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phy_trigger_machine(phydev); |
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return IRQ_HANDLED; |
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} |
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/* Cicada 8201, a.k.a Vitesse VSC8201 */ |
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static struct phy_driver cis820x_driver[] = { |
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{ |
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.phy_id = 0x000fc410, |
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.name = "Cicada Cis8201", |
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.phy_id_mask = 0x000ffff0, |
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/* PHY_GBIT_FEATURES */ |
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.config_init = &cis820x_config_init, |
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.config_intr = &cis820x_config_intr, |
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.handle_interrupt = &cis820x_handle_interrupt, |
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}, { |
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.phy_id = 0x000fc440, |
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.name = "Cicada Cis8204", |
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.phy_id_mask = 0x000fffc0, |
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/* PHY_GBIT_FEATURES */ |
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.config_init = &cis820x_config_init, |
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.config_intr = &cis820x_config_intr, |
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.handle_interrupt = &cis820x_handle_interrupt, |
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} }; |
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module_phy_driver(cis820x_driver); |
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static struct mdio_device_id __maybe_unused cicada_tbl[] = { |
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{ 0x000fc410, 0x000ffff0 }, |
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{ 0x000fc440, 0x000fffc0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(mdio, cicada_tbl);
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