1 /* 2 * drivers/net/phy/cicada.c 3 * 4 * Driver for Cicada PHYs 5 * 6 * Author: Andy Fleming 7 * 8 * Copyright (c) 2004 Freescale Semiconductor, Inc. 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 */ 16 #include <linux/kernel.h> 17 #include <linux/string.h> 18 #include <linux/errno.h> 19 #include <linux/unistd.h> 20 #include <linux/slab.h> 21 #include <linux/interrupt.h> 22 #include <linux/init.h> 23 #include <linux/delay.h> 24 #include <linux/netdevice.h> 25 #include <linux/etherdevice.h> 26 #include <linux/skbuff.h> 27 #include <linux/spinlock.h> 28 #include <linux/mm.h> 29 #include <linux/module.h> 30 #include <linux/mii.h> 31 #include <linux/ethtool.h> 32 #include <linux/phy.h> 33 34 #include <asm/io.h> 35 #include <asm/irq.h> 36 #include <asm/uaccess.h> 37 38 /* Cicada Extended Control Register 1 */ 39 #define MII_CIS8201_EXT_CON1 0x17 40 #define MII_CIS8201_EXTCON1_INIT 0x0000 41 42 /* Cicada Interrupt Mask Register */ 43 #define MII_CIS8201_IMASK 0x19 44 #define MII_CIS8201_IMASK_IEN 0x8000 45 #define MII_CIS8201_IMASK_SPEED 0x4000 46 #define MII_CIS8201_IMASK_LINK 0x2000 47 #define MII_CIS8201_IMASK_DUPLEX 0x1000 48 #define MII_CIS8201_IMASK_MASK 0xf000 49 50 /* Cicada Interrupt Status Register */ 51 #define MII_CIS8201_ISTAT 0x1a 52 #define MII_CIS8201_ISTAT_STATUS 0x8000 53 #define MII_CIS8201_ISTAT_SPEED 0x4000 54 #define MII_CIS8201_ISTAT_LINK 0x2000 55 #define MII_CIS8201_ISTAT_DUPLEX 0x1000 56 57 /* Cicada Auxiliary Control/Status Register */ 58 #define MII_CIS8201_AUX_CONSTAT 0x1c 59 #define MII_CIS8201_AUXCONSTAT_INIT 0x0004 60 #define MII_CIS8201_AUXCONSTAT_DUPLEX 0x0020 61 #define MII_CIS8201_AUXCONSTAT_SPEED 0x0018 62 #define MII_CIS8201_AUXCONSTAT_GBIT 0x0010 63 #define MII_CIS8201_AUXCONSTAT_100 0x0008 64 65 MODULE_DESCRIPTION("Cicadia PHY driver"); 66 MODULE_AUTHOR("Andy Fleming"); 67 MODULE_LICENSE("GPL"); 68 69 static int cis820x_config_init(struct phy_device *phydev) 70 { 71 int err; 72 73 err = phy_write(phydev, MII_CIS8201_AUX_CONSTAT, 74 MII_CIS8201_AUXCONSTAT_INIT); 75 76 if (err < 0) 77 return err; 78 79 err = phy_write(phydev, MII_CIS8201_EXT_CON1, 80 MII_CIS8201_EXTCON1_INIT); 81 82 return err; 83 } 84 85 static int cis820x_ack_interrupt(struct phy_device *phydev) 86 { 87 int err = phy_read(phydev, MII_CIS8201_ISTAT); 88 89 return (err < 0) ? err : 0; 90 } 91 92 static int cis820x_config_intr(struct phy_device *phydev) 93 { 94 int err; 95 96 if(phydev->interrupts == PHY_INTERRUPT_ENABLED) 97 err = phy_write(phydev, MII_CIS8201_IMASK, 98 MII_CIS8201_IMASK_MASK); 99 else 100 err = phy_write(phydev, MII_CIS8201_IMASK, 0); 101 102 return err; 103 } 104 105 /* Cicada 8201, a.k.a Vitesse VSC8201 */ 106 static struct phy_driver cis8201_driver = { 107 .phy_id = 0x000fc410, 108 .name = "Cicada Cis8201", 109 .phy_id_mask = 0x000ffff0, 110 .features = PHY_GBIT_FEATURES, 111 .flags = PHY_HAS_INTERRUPT, 112 .config_init = &cis820x_config_init, 113 .config_aneg = &genphy_config_aneg, 114 .read_status = &genphy_read_status, 115 .ack_interrupt = &cis820x_ack_interrupt, 116 .config_intr = &cis820x_config_intr, 117 .driver = { .owner = THIS_MODULE,}, 118 }; 119 120 /* Cicada 8204 */ 121 static struct phy_driver cis8204_driver = { 122 .phy_id = 0x000fc440, 123 .name = "Cicada Cis8204", 124 .phy_id_mask = 0x000fffc0, 125 .features = PHY_GBIT_FEATURES, 126 .flags = PHY_HAS_INTERRUPT, 127 .config_init = &cis820x_config_init, 128 .config_aneg = &genphy_config_aneg, 129 .read_status = &genphy_read_status, 130 .ack_interrupt = &cis820x_ack_interrupt, 131 .config_intr = &cis820x_config_intr, 132 .driver = { .owner = THIS_MODULE,}, 133 }; 134 135 static int __init cicada_init(void) 136 { 137 int ret; 138 139 ret = phy_driver_register(&cis8204_driver); 140 if (ret) 141 goto err1; 142 143 ret = phy_driver_register(&cis8201_driver); 144 if (ret) 145 goto err2; 146 return 0; 147 148 err2: 149 phy_driver_unregister(&cis8204_driver); 150 err1: 151 return ret; 152 } 153 154 static void __exit cicada_exit(void) 155 { 156 phy_driver_unregister(&cis8204_driver); 157 phy_driver_unregister(&cis8201_driver); 158 } 159 160 module_init(cicada_init); 161 module_exit(cicada_exit); 162 163 static struct mdio_device_id cicada_tbl[] = { 164 { 0x000fc410, 0x000ffff0 }, 165 { 0x000fc440, 0x000fffc0 }, 166 { } 167 }; 168 169 MODULE_DEVICE_TABLE(mdio, cicada_tbl); 170