1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * Copyright 2011 Freescale Semiconductor, Inc.
4 * Andy Fleming <afleming@gmail.com>
6 * This file pretty much stolen from Linux's mii.h/ethtool.h/phy.h
13 #include <linux/list.h>
14 #include <linux/mii.h>
15 #include <linux/ethtool.h>
16 #include <linux/mdio.h>
17 #include <phy_interface.h>
19 #define PHY_FIXED_ID 0xa5a55a5a
21 * There is no actual id for this.
22 * This is just a dummy id for gmii2rgmmi converter.
24 #define PHY_GMII2RGMII_ID 0x5a5a5a5a
26 #define PHY_MAX_ADDR 32
28 #define PHY_FLAG_BROKEN_RESET (1 << 0) /* soft reset not supported */
30 #define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \
34 #define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \
35 SUPPORTED_10baseT_Full)
37 #define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \
38 SUPPORTED_100baseT_Full)
40 #define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \
41 SUPPORTED_1000baseT_Full)
43 #define PHY_BASIC_FEATURES (PHY_10BT_FEATURES | \
44 PHY_100BT_FEATURES | \
47 #define PHY_GBIT_FEATURES (PHY_BASIC_FEATURES | \
50 #define PHY_10G_FEATURES (PHY_GBIT_FEATURES | \
51 SUPPORTED_10000baseT_Full)
53 #ifndef PHY_ANEG_TIMEOUT
54 #define PHY_ANEG_TIMEOUT 4000
60 #define MDIO_NAME_LEN 32
63 struct list_head link;
64 char name[MDIO_NAME_LEN];
66 int (*read)(struct mii_dev *bus, int addr, int devad, int reg);
67 int (*write)(struct mii_dev *bus, int addr, int devad, int reg,
69 int (*reset)(struct mii_dev *bus);
70 struct phy_device *phymap[PHY_MAX_ADDR];
74 /* struct phy_driver: a structure which defines PHY behavior
76 * uid will contain a number which represents the PHY. During
77 * startup, the driver will poll the PHY to find out what its
78 * UID--as defined by registers 2 and 3--is. The 32-bit result
79 * gotten from the PHY will be masked to
80 * discard any bits which may change based on revision numbers
81 * unimportant to functionality
92 /* Called to do any driver startup necessities */
93 /* Will be called during phy_connect */
94 int (*probe)(struct phy_device *phydev);
96 /* Called to configure the PHY, and modify the controller
97 * based on the results. Should be called after phy_connect */
98 int (*config)(struct phy_device *phydev);
100 /* Called when starting up the controller */
101 int (*startup)(struct phy_device *phydev);
103 /* Called when bringing down the controller */
104 int (*shutdown)(struct phy_device *phydev);
106 int (*readext)(struct phy_device *phydev, int addr, int devad, int reg);
107 int (*writeext)(struct phy_device *phydev, int addr, int devad, int reg,
110 /* Phy specific driver override for reading a MMD register */
111 int (*read_mmd)(struct phy_device *phydev, int devad, int reg);
113 /* Phy specific driver override for writing a MMD register */
114 int (*write_mmd)(struct phy_device *phydev, int devad, int reg,
117 struct list_head list;
121 /* Information about the PHY type */
122 /* And management functions */
124 struct phy_driver *drv;
131 struct eth_device *dev;
134 /* forced speed & duplex (no autoneg)
135 * partner speed & duplex & pause (autoneg)
140 /* The most recently read link state */
143 phy_interface_t interface;
166 static inline int phy_read(struct phy_device *phydev, int devad, int regnum)
168 struct mii_dev *bus = phydev->bus;
170 return bus->read(bus, phydev->addr, devad, regnum);
173 static inline int phy_write(struct phy_device *phydev, int devad, int regnum,
176 struct mii_dev *bus = phydev->bus;
178 return bus->write(bus, phydev->addr, devad, regnum, val);
181 static inline void phy_mmd_start_indirect(struct phy_device *phydev, int devad,
184 /* Write the desired MMD Devad */
185 phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_CTRL, devad);
187 /* Write the desired MMD register address */
188 phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA, regnum);
190 /* Select the Function : DATA with no post increment */
191 phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_CTRL,
192 (devad | MII_MMD_CTRL_NOINCR));
195 static inline int phy_read_mmd(struct phy_device *phydev, int devad,
198 struct phy_driver *drv = phydev->drv;
200 if (regnum > (u16)~0 || devad > 32)
203 /* driver-specific access */
205 return drv->read_mmd(phydev, devad, regnum);
207 /* direct C45 / C22 access */
208 if ((drv->features & PHY_10G_FEATURES) == PHY_10G_FEATURES ||
209 devad == MDIO_DEVAD_NONE || !devad)
210 return phy_read(phydev, devad, regnum);
212 /* indirect C22 access */
213 phy_mmd_start_indirect(phydev, devad, regnum);
215 /* Read the content of the MMD's selected register */
216 return phy_read(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA);
219 static inline int phy_write_mmd(struct phy_device *phydev, int devad,
222 struct phy_driver *drv = phydev->drv;
224 if (regnum > (u16)~0 || devad > 32)
227 /* driver-specific access */
229 return drv->write_mmd(phydev, devad, regnum, val);
231 /* direct C45 / C22 access */
232 if ((drv->features & PHY_10G_FEATURES) == PHY_10G_FEATURES ||
233 devad == MDIO_DEVAD_NONE || !devad)
234 return phy_write(phydev, devad, regnum, val);
236 /* indirect C22 access */
237 phy_mmd_start_indirect(phydev, devad, regnum);
239 /* Write the data into MMD's selected register */
240 return phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA, val);
243 #ifdef CONFIG_PHYLIB_10G
244 extern struct phy_driver gen10g_driver;
246 /* For now, XGMII is the only 10G interface */
247 static inline int is_10g_interface(phy_interface_t interface)
249 return interface == PHY_INTERFACE_MODE_XGMII;
255 * phy_init() - Initializes the PHY drivers
257 * This function registers all available PHY drivers
259 * @return 0 if OK, -ve on error
264 * phy_reset() - Resets the specified PHY
266 * Issues a reset of the PHY and waits for it to complete
268 * @phydev: PHY to reset
269 * @return 0 if OK, -ve on error
271 int phy_reset(struct phy_device *phydev);
274 * phy_find_by_mask() - Searches for a PHY on the specified MDIO bus
276 * The function checks the PHY addresses flagged in phy_mask and returns a
277 * phy_device pointer if it detects a PHY.
278 * This function should only be called if just one PHY is expected to be present
279 * in the set of addresses flagged in phy_mask. If multiple PHYs are present,
280 * it is undefined which of these PHYs is returned.
282 * @bus: MII/MDIO bus to scan
283 * @phy_mask: bitmap of PYH addresses to scan
284 * @interface: type of MAC-PHY interface
285 * @return pointer to phy_device if a PHY is found, or NULL otherwise
287 struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask,
288 phy_interface_t interface);
293 * phy_connect_dev() - Associates the given pair of PHY and Ethernet devices
294 * @phydev: PHY device
295 * @dev: Ethernet device
297 void phy_connect_dev(struct phy_device *phydev, struct udevice *dev);
300 * phy_connect() - Creates a PHY device for the Ethernet interface
302 * Creates a PHY device for the PHY at the given address, if one doesn't exist
303 * already, and associates it with the Ethernet device.
304 * The function may be called with addr <= 0, in this case addr value is ignored
305 * and the bus is scanned to detect a PHY. Scanning should only be used if only
306 * one PHY is expected to be present on the MDIO bus, otherwise it is undefined
307 * which PHY is returned.
309 * @bus: MII/MDIO bus that hosts the PHY
310 * @addr: PHY address on MDIO bus
311 * @dev: Ethernet device to associate to the PHY
312 * @interface: type of MAC-PHY interface
313 * @return pointer to phy_device if a PHY is found, or NULL otherwise
315 struct phy_device *phy_connect(struct mii_dev *bus, int addr,
317 phy_interface_t interface);
319 static inline ofnode phy_get_ofnode(struct phy_device *phydev)
321 if (ofnode_valid(phydev->node))
324 return dev_ofnode(phydev->dev);
329 * phy_connect_dev() - Associates the given pair of PHY and Ethernet devices
330 * @phydev: PHY device
331 * @dev: Ethernet device
333 void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev);
336 * phy_connect() - Creates a PHY device for the Ethernet interface
338 * Creates a PHY device for the PHY at the given address, if one doesn't exist
339 * already, and associates it with the Ethernet device.
340 * The function may be called with addr <= 0, in this case addr value is ignored
341 * and the bus is scanned to detect a PHY. Scanning should only be used if only
342 * one PHY is expected to be present on the MDIO bus, otherwise it is undefined
343 * which PHY is returned.
345 * @bus: MII/MDIO bus that hosts the PHY
346 * @addr: PHY address on MDIO bus
347 * @dev: Ethernet device to associate to the PHY
348 * @interface: type of MAC-PHY interface
349 * @return pointer to phy_device if a PHY is found, or NULL otherwise
351 struct phy_device *phy_connect(struct mii_dev *bus, int addr,
352 struct eth_device *dev,
353 phy_interface_t interface);
355 static inline ofnode phy_get_ofnode(struct phy_device *phydev)
357 return ofnode_null();
360 int phy_startup(struct phy_device *phydev);
361 int phy_config(struct phy_device *phydev);
362 int phy_shutdown(struct phy_device *phydev);
363 int phy_register(struct phy_driver *drv);
364 int phy_set_supported(struct phy_device *phydev, u32 max_speed);
365 int genphy_config_aneg(struct phy_device *phydev);
366 int genphy_restart_aneg(struct phy_device *phydev);
367 int genphy_update_link(struct phy_device *phydev);
368 int genphy_parse_link(struct phy_device *phydev);
369 int genphy_config(struct phy_device *phydev);
370 int genphy_startup(struct phy_device *phydev);
371 int genphy_shutdown(struct phy_device *phydev);
372 int gen10g_config(struct phy_device *phydev);
373 int gen10g_startup(struct phy_device *phydev);
374 int gen10g_shutdown(struct phy_device *phydev);
375 int gen10g_discover_mmds(struct phy_device *phydev);
377 int phy_b53_init(void);
378 int phy_mv88e61xx_init(void);
379 int phy_aquantia_init(void);
380 int phy_atheros_init(void);
381 int phy_broadcom_init(void);
382 int phy_cortina_init(void);
383 int phy_davicom_init(void);
384 int phy_et1011c_init(void);
385 int phy_lxt_init(void);
386 int phy_marvell_init(void);
387 int phy_micrel_ksz8xxx_init(void);
388 int phy_micrel_ksz90x1_init(void);
389 int phy_meson_gxl_init(void);
390 int phy_natsemi_init(void);
391 int phy_realtek_init(void);
392 int phy_smsc_init(void);
393 int phy_teranetics_init(void);
394 int phy_ti_init(void);
395 int phy_vitesse_init(void);
396 int phy_xilinx_init(void);
397 int phy_mscc_init(void);
398 int phy_fixed_init(void);
399 int phy_xilinx_gmii2rgmii_init(void);
401 int board_phy_config(struct phy_device *phydev);
402 int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id);
405 * phy_get_interface_by_name() - Look up a PHY interface name
407 * @str: PHY interface name, e.g. "mii"
408 * @return PHY_INTERFACE_MODE_... value, or -1 if not found
410 int phy_get_interface_by_name(const char *str);
413 * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
414 * is RGMII (all variants)
415 * @phydev: the phy_device struct
417 static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
419 return phydev->interface >= PHY_INTERFACE_MODE_RGMII &&
420 phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID;
424 * phy_interface_is_sgmii - Convenience function for testing if a PHY interface
425 * is SGMII (all variants)
426 * @phydev: the phy_device struct
428 static inline bool phy_interface_is_sgmii(struct phy_device *phydev)
430 return phydev->interface >= PHY_INTERFACE_MODE_SGMII &&
431 phydev->interface <= PHY_INTERFACE_MODE_QSGMII;
434 /* PHY UIDs for various PHYs that are referenced in external code */
435 #define PHY_UID_CS4340 0x13e51002
436 #define PHY_UID_CS4223 0x03e57003
437 #define PHY_UID_TN2020 0x00a19410
438 #define PHY_UID_IN112525_S03 0x02107440