include/phy.h

   1 /*
   2  * Copyright 2011 Freescale Semiconductor, Inc.
   3  *      Andy Fleming <afleming@freescale.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  *
   7  * This file pretty much stolen from Linux's mii.h/ethtool.h/phy.h
   8  */
   9
  10 #ifndef _PHY_H
  11 #define _PHY_H
  12
  13 #include <linux/list.h>
  14 #include <linux/mii.h>
  15 #include <linux/ethtool.h>
  16 #include <linux/mdio.h>
  17
  18 #define PHY_MAX_ADDR 32
  19
  20 #define PHY_BASIC_FEATURES      (SUPPORTED_10baseT_Half | \
  21                                  SUPPORTED_10baseT_Full | \
  22                                  SUPPORTED_100baseT_Half | \
  23                                  SUPPORTED_100baseT_Full | \
  24                                  SUPPORTED_Autoneg | \
  25                                  SUPPORTED_TP | \
  26                                  SUPPORTED_MII)
  27
  28 #define PHY_GBIT_FEATURES       (PHY_BASIC_FEATURES | \
  29                                  SUPPORTED_1000baseT_Half | \
  30                                  SUPPORTED_1000baseT_Full)
  31
  32 #define PHY_10G_FEATURES        (PHY_GBIT_FEATURES | \
  33                                 SUPPORTED_10000baseT_Full)
  34
  35 #define PHY_ANEG_TIMEOUT        4000
  36
  37
  38 typedef enum {
  39         PHY_INTERFACE_MODE_MII,
  40         PHY_INTERFACE_MODE_GMII,
  41         PHY_INTERFACE_MODE_SGMII,
  42         PHY_INTERFACE_MODE_QSGMII,
  43         PHY_INTERFACE_MODE_TBI,
  44         PHY_INTERFACE_MODE_RMII,
  45         PHY_INTERFACE_MODE_RGMII,
  46         PHY_INTERFACE_MODE_RGMII_ID,
  47         PHY_INTERFACE_MODE_RGMII_RXID,
  48         PHY_INTERFACE_MODE_RGMII_TXID,
  49         PHY_INTERFACE_MODE_RTBI,
  50         PHY_INTERFACE_MODE_XGMII,
  51         PHY_INTERFACE_MODE_NONE /* Must be last */
  52 } phy_interface_t;
  53
  54 static const char *phy_interface_strings[] = {
  55         [PHY_INTERFACE_MODE_MII]                = "mii",
  56         [PHY_INTERFACE_MODE_GMII]               = "gmii",
  57         [PHY_INTERFACE_MODE_SGMII]              = "sgmii",
  58         [PHY_INTERFACE_MODE_QSGMII]             = "qsgmii",
  59         [PHY_INTERFACE_MODE_TBI]                = "tbi",
  60         [PHY_INTERFACE_MODE_RMII]               = "rmii",
  61         [PHY_INTERFACE_MODE_RGMII]              = "rgmii",
  62         [PHY_INTERFACE_MODE_RGMII_ID]           = "rgmii-id",
  63         [PHY_INTERFACE_MODE_RGMII_RXID]         = "rgmii-rxid",
  64         [PHY_INTERFACE_MODE_RGMII_TXID]         = "rgmii-txid",
  65         [PHY_INTERFACE_MODE_RTBI]               = "rtbi",
  66         [PHY_INTERFACE_MODE_XGMII]              = "xgmii",
  67         [PHY_INTERFACE_MODE_NONE]               = "",
  68 };
  69
  70 static inline const char *phy_string_for_interface(phy_interface_t i)
  71 {
  72         /* Default to unknown */
  73         if (i > PHY_INTERFACE_MODE_NONE)
  74                 i = PHY_INTERFACE_MODE_NONE;
  75
  76         return phy_interface_strings[i];
  77 }
  78
  79
  80 struct phy_device;
  81
  82 #define MDIO_NAME_LEN 32
  83
  84 struct mii_dev {
  85         struct list_head link;
  86         char name[MDIO_NAME_LEN];
  87         void *priv;
  88         int (*read)(struct mii_dev *bus, int addr, int devad, int reg);
  89         int (*write)(struct mii_dev *bus, int addr, int devad, int reg,
  90                         u16 val);
  91         int (*reset)(struct mii_dev *bus);
  92         struct phy_device *phymap[PHY_MAX_ADDR];
  93         u32 phy_mask;
  94 };
  95
  96 /* struct phy_driver: a structure which defines PHY behavior
  97  *
  98  * uid will contain a number which represents the PHY.  During
  99  * startup, the driver will poll the PHY to find out what its
 100  * UID--as defined by registers 2 and 3--is.  The 32-bit result
 101  * gotten from the PHY will be masked to
 102  * discard any bits which may change based on revision numbers
 103  * unimportant to functionality
 104  *
 105  */
 106 struct phy_driver {
 107         char *name;
 108         unsigned int uid;
 109         unsigned int mask;
 110         unsigned int mmds;
 111
 112         u32 features;
 113
 114         /* Called to do any driver startup necessities */
 115         /* Will be called during phy_connect */
 116         int (*probe)(struct phy_device *phydev);
 117
 118         /* Called to configure the PHY, and modify the controller
 119          * based on the results.  Should be called after phy_connect */
 120         int (*config)(struct phy_device *phydev);
 121
 122         /* Called when starting up the controller */
 123         int (*startup)(struct phy_device *phydev);
 124
 125         /* Called when bringing down the controller */
 126         int (*shutdown)(struct phy_device *phydev);
 127
 128         int (*readext)(struct phy_device *phydev, int addr, int devad, int reg);
 129         int (*writeext)(struct phy_device *phydev, int addr, int devad, int reg,
 130                         u16 val);
 131         struct list_head list;
 132 };
 133
 134 struct phy_device {
 135         /* Information about the PHY type */
 136         /* And management functions */
 137         struct mii_dev *bus;
 138         struct phy_driver *drv;
 139         void *priv;
 140
 141         struct eth_device *dev;
 142
 143         /* forced speed & duplex (no autoneg)
 144          * partner speed & duplex & pause (autoneg)
 145          */
 146         int speed;
 147         int duplex;
 148
 149         /* The most recently read link state */
 150         int link;
 151         int port;
 152         phy_interface_t interface;
 153
 154         u32 advertising;
 155         u32 supported;
 156         u32 mmds;
 157
 158         int autoneg;
 159         int addr;
 160         int pause;
 161         int asym_pause;
 162         u32 phy_id;
 163         u32 flags;
 164 };
 165
 166 struct fixed_link {
 167         int phy_id;
 168         int duplex;
 169         int link_speed;
 170         int pause;
 171         int asym_pause;
 172 };
 173
 174 static inline int phy_read(struct phy_device *phydev, int devad, int regnum)
 175 {
 176         struct mii_dev *bus = phydev->bus;
 177
 178         return bus->read(bus, phydev->addr, devad, regnum);
 179 }
 180
 181 static inline int phy_write(struct phy_device *phydev, int devad, int regnum,
 182                         u16 val)
 183 {
 184         struct mii_dev *bus = phydev->bus;
 185
 186         return bus->write(bus, phydev->addr, devad, regnum, val);
 187 }
 188
 189 #ifdef CONFIG_PHYLIB_10G
 190 extern struct phy_driver gen10g_driver;
 191
 192 /* For now, XGMII is the only 10G interface */
 193 static inline int is_10g_interface(phy_interface_t interface)
 194 {
 195         return interface == PHY_INTERFACE_MODE_XGMII;
 196 }
 197
 198 #endif
 199
 200 int phy_init(void);
 201 int phy_reset(struct phy_device *phydev);
 202 struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask,
 203                 phy_interface_t interface);
 204 void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev);
 205 struct phy_device *phy_connect(struct mii_dev *bus, int addr,
 206                                 struct eth_device *dev,
 207                                 phy_interface_t interface);
 208 int phy_startup(struct phy_device *phydev);
 209 int phy_config(struct phy_device *phydev);
 210 int phy_shutdown(struct phy_device *phydev);
 211 int phy_register(struct phy_driver *drv);
 212 int genphy_config_aneg(struct phy_device *phydev);
 213 int genphy_restart_aneg(struct phy_device *phydev);
 214 int genphy_update_link(struct phy_device *phydev);
 215 int genphy_parse_link(struct phy_device *phydev);
 216 int genphy_config(struct phy_device *phydev);
 217 int genphy_startup(struct phy_device *phydev);
 218 int genphy_shutdown(struct phy_device *phydev);
 219 int gen10g_config(struct phy_device *phydev);
 220 int gen10g_startup(struct phy_device *phydev);
 221 int gen10g_shutdown(struct phy_device *phydev);
 222 int gen10g_discover_mmds(struct phy_device *phydev);
 223
 224 int phy_atheros_init(void);
 225 int phy_broadcom_init(void);
 226 int phy_davicom_init(void);
 227 int phy_et1011c_init(void);
 228 int phy_lxt_init(void);
 229 int phy_marvell_init(void);
 230 int phy_micrel_init(void);
 231 int phy_natsemi_init(void);
 232 int phy_realtek_init(void);
 233 int phy_smsc_init(void);
 234 int phy_teranetics_init(void);
 235 int phy_vitesse_init(void);
 236
 237 /* PHY UIDs for various PHYs that are referenced in external code */
 238 #define PHY_UID_TN2020  0x00a19410
 239
 240 #endif