1 /* SPDX-License-Identifier: GPL-2.0 OR IBM-pibs */ 2 /* 3 * Additions (C) Copyright 2009 Industrie Dial Face S.p.A. 4 */ 5 /*----------------------------------------------------------------------------+ 6 | 7 | File Name: miiphy.h 8 | 9 | Function: Include file defining PHY registers. 10 | 11 | Author: Mark Wisner 12 | 13 +----------------------------------------------------------------------------*/ 14 #ifndef _miiphy_h_ 15 #define _miiphy_h_ 16 17 #include <common.h> 18 #include <linux/mii.h> 19 #include <linux/list.h> 20 #include <net.h> 21 #include <phy.h> 22 23 int miiphy_read(const char *devname, unsigned char addr, unsigned char reg, 24 unsigned short *value); 25 int miiphy_write(const char *devname, unsigned char addr, unsigned char reg, 26 unsigned short value); 27 int miiphy_info(const char *devname, unsigned char addr, unsigned int *oui, 28 unsigned char *model, unsigned char *rev); 29 int miiphy_reset(const char *devname, unsigned char addr); 30 int miiphy_speed(const char *devname, unsigned char addr); 31 int miiphy_duplex(const char *devname, unsigned char addr); 32 int miiphy_is_1000base_x(const char *devname, unsigned char addr); 33 #ifdef CONFIG_SYS_FAULT_ECHO_LINK_DOWN 34 int miiphy_link(const char *devname, unsigned char addr); 35 #endif 36 37 void miiphy_init(void); 38 39 int miiphy_set_current_dev(const char *devname); 40 const char *miiphy_get_current_dev(void); 41 struct mii_dev *mdio_get_current_dev(void); 42 struct list_head *mdio_get_list_head(void); 43 struct mii_dev *miiphy_get_dev_by_name(const char *devname); 44 struct phy_device *mdio_phydev_for_ethname(const char *devname); 45 46 void miiphy_listdev(void); 47 48 struct mii_dev *mdio_alloc(void); 49 void mdio_free(struct mii_dev *bus); 50 int mdio_register(struct mii_dev *bus); 51 52 /** 53 * mdio_register_seq - Register mdio bus with sequence number 54 * @bus: mii device structure 55 * @seq: sequence number 56 * 57 * Return: 0 if success, negative value if error 58 */ 59 int mdio_register_seq(struct mii_dev *bus, int seq); 60 int mdio_unregister(struct mii_dev *bus); 61 void mdio_list_devices(void); 62 63 #ifdef CONFIG_BITBANGMII 64 65 #define BB_MII_DEVNAME "bb_miiphy" 66 67 struct bb_miiphy_bus { 68 char name[16]; 69 int (*init)(struct bb_miiphy_bus *bus); 70 int (*mdio_active)(struct bb_miiphy_bus *bus); 71 int (*mdio_tristate)(struct bb_miiphy_bus *bus); 72 int (*set_mdio)(struct bb_miiphy_bus *bus, int v); 73 int (*get_mdio)(struct bb_miiphy_bus *bus, int *v); 74 int (*set_mdc)(struct bb_miiphy_bus *bus, int v); 75 int (*delay)(struct bb_miiphy_bus *bus); 76 #ifdef CONFIG_BITBANGMII_MULTI 77 void *priv; 78 #endif 79 }; 80 81 extern struct bb_miiphy_bus bb_miiphy_buses[]; 82 extern int bb_miiphy_buses_num; 83 84 /** 85 * bb_miiphy_init() - Initialize bit-banged MII bus driver 86 * 87 * It is called during the generic post-relocation init sequence. 88 * 89 * Return: 0 if OK 90 */ 91 int bb_miiphy_init(void); 92 93 int bb_miiphy_read(struct mii_dev *miidev, int addr, int devad, int reg); 94 int bb_miiphy_write(struct mii_dev *miidev, int addr, int devad, int reg, 95 u16 value); 96 #endif 97 98 /* phy seed setup */ 99 #define AUTO 99 100 #define _1000BASET 1000 101 #define _100BASET 100 102 #define _10BASET 10 103 #define HALF 22 104 #define FULL 44 105 106 /* phy register offsets */ 107 #define MII_MIPSCR 0x11 108 109 /* MII_LPA */ 110 #define PHY_ANLPAR_PSB_802_3 0x0001 111 #define PHY_ANLPAR_PSB_802_9 0x0002 112 113 /* MII_CTRL1000 masks */ 114 #define PHY_1000BTCR_1000FD 0x0200 115 #define PHY_1000BTCR_1000HD 0x0100 116 117 /* MII_STAT1000 masks */ 118 #define PHY_1000BTSR_MSCF 0x8000 119 #define PHY_1000BTSR_MSCR 0x4000 120 #define PHY_1000BTSR_LRS 0x2000 121 #define PHY_1000BTSR_RRS 0x1000 122 #define PHY_1000BTSR_1000FD 0x0800 123 #define PHY_1000BTSR_1000HD 0x0400 124 125 /* phy EXSR */ 126 #define ESTATUS_1000XF 0x8000 127 #define ESTATUS_1000XH 0x4000 128 129 /** 130 * struct mdio_perdev_priv - Per-device class data for MDIO DM 131 * 132 * @mii_bus: Supporting MII legacy bus 133 */ 134 struct mdio_perdev_priv { 135 struct mii_dev *mii_bus; 136 }; 137 138 /** 139 * struct mdio_ops - MDIO bus operations 140 * 141 * @read: Read from a PHY register 142 * @write: Write to a PHY register 143 * @reset: Reset the MDIO bus, NULL if not supported 144 */ 145 struct mdio_ops { 146 int (*read)(struct udevice *mdio_dev, int addr, int devad, int reg); 147 int (*write)(struct udevice *mdio_dev, int addr, int devad, int reg, 148 u16 val); 149 int (*reset)(struct udevice *mdio_dev); 150 }; 151 152 #define mdio_get_ops(dev) ((struct mdio_ops *)(dev)->driver->ops) 153 154 /** 155 * dm_mdio_probe_devices - Call probe on all MII devices, currently used for 156 * MDIO console commands. 157 */ 158 void dm_mdio_probe_devices(void); 159 160 /** 161 * dm_mdio_read - Wrapper over .read() operation for DM MDIO 162 * 163 * @mdiodev: mdio device 164 * @addr: PHY address on MDIO bus 165 * @devad: device address on PHY if C45; should be MDIO_DEVAD_NONE if C22 166 * @reg: register address 167 * Return: register value if non-negative, -error code otherwise 168 */ 169 int dm_mdio_read(struct udevice *mdio_dev, int addr, int devad, int reg); 170 171 /** 172 * dm_mdio_write - Wrapper over .write() operation for DM MDIO 173 * 174 * @mdiodev: mdio device 175 * @addr: PHY address on MDIO bus 176 * @devad: device address on PHY if C45; should be MDIO_DEVAD_NONE if C22 177 * @reg: register address 178 * @val: value to write 179 * Return: 0 on success, -error code otherwise 180 */ 181 int dm_mdio_write(struct udevice *mdio_dev, int addr, int devad, int reg, u16 val); 182 183 /** 184 * dm_mdio_reset - Wrapper over .reset() operation for DM MDIO 185 * 186 * @mdiodev: mdio device 187 * Return: 0 on success, -error code otherwise 188 */ 189 int dm_mdio_reset(struct udevice *mdio_dev); 190 191 /** 192 * dm_phy_find_by_ofnode - Find PHY device by ofnode 193 * 194 * @phynode: PHY's ofnode 195 * 196 * Return: pointer to phy_device, or NULL on error 197 */ 198 struct phy_device *dm_phy_find_by_ofnode(ofnode phynode); 199 200 /** 201 * dm_mdio_phy_connect - Wrapper over phy_connect for DM MDIO 202 * 203 * @mdiodev: mdio device the PHY is accesible on 204 * @phyaddr: PHY address on MDIO bus 205 * @ethdev: ethernet device to connect to the PHY 206 * @interface: MAC-PHY protocol 207 * 208 * Return: pointer to phy_device, or 0 on error 209 */ 210 struct phy_device *dm_mdio_phy_connect(struct udevice *mdiodev, int phyaddr, 211 struct udevice *ethdev, 212 phy_interface_t interface); 213 214 /** 215 * dm_eth_phy_connect - Connect an Eth device to a PHY based on device tree 216 * 217 * Picks up the DT phy-handle and phy-mode from ethernet device node and 218 * connects the ethernet device to the linked PHY. 219 * 220 * @ethdev: ethernet device 221 * 222 * Return: pointer to phy_device, or 0 on error 223 */ 224 struct phy_device *dm_eth_phy_connect(struct udevice *ethdev); 225 226 /* indicates none of the child buses is selected */ 227 #define MDIO_MUX_SELECT_NONE -1 228 229 /** 230 * struct mdio_mux_ops - MDIO MUX operations 231 * 232 * @select: Selects a child bus 233 * @deselect: Clean up selection. Optional, can be NULL 234 */ 235 struct mdio_mux_ops { 236 int (*select)(struct udevice *mux, int cur, int sel); 237 int (*deselect)(struct udevice *mux, int sel); 238 }; 239 240 #define mdio_mux_get_ops(dev) ((struct mdio_mux_ops *)(dev)->driver->ops) 241 242 #endif 243