| Matus Ujhelyi | 0ca7111 | 2012-10-14 19:07:16 +0000 | [diff] [blame] | 1 | /* |
| 2 | * drivers/net/phy/at803x.c |
| 3 | * |
| 4 | * Driver for Atheros 803x PHY |
| 5 | * |
| 6 | * Author: Matus Ujhelyi <ujhelyi.m@gmail.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/phy.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/string.h> |
| 17 | #include <linux/netdevice.h> |
| 18 | #include <linux/etherdevice.h> |
| 19 | |
| 20 | #define AT803X_INTR_ENABLE 0x12 |
| 21 | #define AT803X_INTR_STATUS 0x13 |
| 22 | #define AT803X_WOL_ENABLE 0x01 |
| 23 | #define AT803X_DEVICE_ADDR 0x03 |
| 24 | #define AT803X_LOC_MAC_ADDR_0_15_OFFSET 0x804C |
| 25 | #define AT803X_LOC_MAC_ADDR_16_31_OFFSET 0x804B |
| 26 | #define AT803X_LOC_MAC_ADDR_32_47_OFFSET 0x804A |
| 27 | #define AT803X_MMD_ACCESS_CONTROL 0x0D |
| 28 | #define AT803X_MMD_ACCESS_CONTROL_DATA 0x0E |
| 29 | #define AT803X_FUNC_DATA 0x4003 |
| 30 | |
| 31 | MODULE_DESCRIPTION("Atheros 803x PHY driver"); |
| 32 | MODULE_AUTHOR("Matus Ujhelyi"); |
| 33 | MODULE_LICENSE("GPL"); |
| 34 | |
| 35 | static void at803x_set_wol_mac_addr(struct phy_device *phydev) |
| 36 | { |
| 37 | struct net_device *ndev = phydev->attached_dev; |
| 38 | const u8 *mac; |
| 39 | unsigned int i, offsets[] = { |
| 40 | AT803X_LOC_MAC_ADDR_32_47_OFFSET, |
| 41 | AT803X_LOC_MAC_ADDR_16_31_OFFSET, |
| 42 | AT803X_LOC_MAC_ADDR_0_15_OFFSET, |
| 43 | }; |
| 44 | |
| 45 | if (!ndev) |
| 46 | return; |
| 47 | |
| 48 | mac = (const u8 *) ndev->dev_addr; |
| 49 | |
| 50 | if (!is_valid_ether_addr(mac)) |
| 51 | return; |
| 52 | |
| 53 | for (i = 0; i < 3; i++) { |
| 54 | phy_write(phydev, AT803X_MMD_ACCESS_CONTROL, |
| 55 | AT803X_DEVICE_ADDR); |
| 56 | phy_write(phydev, AT803X_MMD_ACCESS_CONTROL_DATA, |
| 57 | offsets[i]); |
| 58 | phy_write(phydev, AT803X_MMD_ACCESS_CONTROL, |
| 59 | AT803X_FUNC_DATA); |
| 60 | phy_write(phydev, AT803X_MMD_ACCESS_CONTROL_DATA, |
| 61 | mac[(i * 2) + 1] | (mac[(i * 2)] << 8)); |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | static int at803x_config_init(struct phy_device *phydev) |
| 66 | { |
| 67 | int val; |
| 68 | u32 features; |
| 69 | int status; |
| 70 | |
| 71 | features = SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_AUI | |
| 72 | SUPPORTED_FIBRE | SUPPORTED_BNC; |
| 73 | |
| 74 | val = phy_read(phydev, MII_BMSR); |
| 75 | if (val < 0) |
| 76 | return val; |
| 77 | |
| 78 | if (val & BMSR_ANEGCAPABLE) |
| 79 | features |= SUPPORTED_Autoneg; |
| 80 | if (val & BMSR_100FULL) |
| 81 | features |= SUPPORTED_100baseT_Full; |
| 82 | if (val & BMSR_100HALF) |
| 83 | features |= SUPPORTED_100baseT_Half; |
| 84 | if (val & BMSR_10FULL) |
| 85 | features |= SUPPORTED_10baseT_Full; |
| 86 | if (val & BMSR_10HALF) |
| 87 | features |= SUPPORTED_10baseT_Half; |
| 88 | |
| 89 | if (val & BMSR_ESTATEN) { |
| 90 | val = phy_read(phydev, MII_ESTATUS); |
| 91 | if (val < 0) |
| 92 | return val; |
| 93 | |
| 94 | if (val & ESTATUS_1000_TFULL) |
| 95 | features |= SUPPORTED_1000baseT_Full; |
| 96 | if (val & ESTATUS_1000_THALF) |
| 97 | features |= SUPPORTED_1000baseT_Half; |
| 98 | } |
| 99 | |
| 100 | phydev->supported = features; |
| 101 | phydev->advertising = features; |
| 102 | |
| 103 | /* enable WOL */ |
| 104 | at803x_set_wol_mac_addr(phydev); |
| 105 | status = phy_write(phydev, AT803X_INTR_ENABLE, AT803X_WOL_ENABLE); |
| 106 | status = phy_read(phydev, AT803X_INTR_STATUS); |
| 107 | |
| 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | /* ATHEROS 8035 */ |
| 112 | static struct phy_driver at8035_driver = { |
| 113 | .phy_id = 0x004dd072, |
| 114 | .name = "Atheros 8035 ethernet", |
| 115 | .phy_id_mask = 0xffffffef, |
| 116 | .config_init = at803x_config_init, |
| 117 | .features = PHY_GBIT_FEATURES, |
| 118 | .flags = PHY_HAS_INTERRUPT, |
| 119 | .config_aneg = &genphy_config_aneg, |
| 120 | .read_status = &genphy_read_status, |
| 121 | .driver = { |
| 122 | .owner = THIS_MODULE, |
| 123 | }, |
| 124 | }; |
| 125 | |
| 126 | /* ATHEROS 8030 */ |
| 127 | static struct phy_driver at8030_driver = { |
| 128 | .phy_id = 0x004dd076, |
| 129 | .name = "Atheros 8030 ethernet", |
| 130 | .phy_id_mask = 0xffffffef, |
| 131 | .config_init = at803x_config_init, |
| 132 | .features = PHY_GBIT_FEATURES, |
| 133 | .flags = PHY_HAS_INTERRUPT, |
| 134 | .config_aneg = &genphy_config_aneg, |
| 135 | .read_status = &genphy_read_status, |
| 136 | .driver = { |
| 137 | .owner = THIS_MODULE, |
| 138 | }, |
| 139 | }; |
| 140 | |
| 141 | static int __init atheros_init(void) |
| 142 | { |
| 143 | int ret; |
| 144 | |
| 145 | ret = phy_driver_register(&at8035_driver); |
| 146 | if (ret) |
| 147 | goto err1; |
| 148 | |
| 149 | ret = phy_driver_register(&at8030_driver); |
| 150 | if (ret) |
| 151 | goto err2; |
| 152 | |
| 153 | return 0; |
| 154 | |
| 155 | err2: |
| 156 | phy_driver_unregister(&at8035_driver); |
| 157 | err1: |
| 158 | return ret; |
| 159 | } |
| 160 | |
| 161 | static void __exit atheros_exit(void) |
| 162 | { |
| 163 | phy_driver_unregister(&at8035_driver); |
| 164 | phy_driver_unregister(&at8030_driver); |
| 165 | } |
| 166 | |
| 167 | module_init(atheros_init); |
| 168 | module_exit(atheros_exit); |
| 169 | |
| 170 | static struct mdio_device_id __maybe_unused atheros_tbl[] = { |
| 171 | { 0x004dd076, 0xffffffef }, |
| 172 | { 0x004dd072, 0xffffffef }, |
| 173 | { } |
| 174 | }; |
| 175 | |
| 176 | MODULE_DEVICE_TABLE(mdio, atheros_tbl); |