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/errno.h>
14 #include <linux/list.h>
15 #include <linux/mii.h>
16 #include <linux/ethtool.h>
17 #include <linux/mdio.h>
19 #include <phy_interface.h>
21 #define PHY_FIXED_ID 0xa5a55a5a
22 #define PHY_NCSI_ID 0xbeefcafe
25 * There is no actual id for this.
26 * This is just a dummy id for gmii2rgmmi converter.
28 #define PHY_GMII2RGMII_ID 0x5a5a5a5a
30 #define PHY_MAX_ADDR 32
32 #define PHY_FLAG_BROKEN_RESET (1 << 0) /* soft reset not supported */
34 #define PHY_DEFAULT_FEATURES (SUPPORTED_Autoneg | \
38 #define PHY_10BT_FEATURES (SUPPORTED_10baseT_Half | \
39 SUPPORTED_10baseT_Full)
41 #define PHY_100BT_FEATURES (SUPPORTED_100baseT_Half | \
42 SUPPORTED_100baseT_Full)
44 #define PHY_1000BT_FEATURES (SUPPORTED_1000baseT_Half | \
45 SUPPORTED_1000baseT_Full)
47 #define PHY_BASIC_FEATURES (PHY_10BT_FEATURES | \
48 PHY_100BT_FEATURES | \
51 #define PHY_GBIT_FEATURES (PHY_BASIC_FEATURES | \
54 #define PHY_10G_FEATURES (PHY_GBIT_FEATURES | \
55 SUPPORTED_10000baseT_Full)
57 #ifndef PHY_ANEG_TIMEOUT
58 #define PHY_ANEG_TIMEOUT 4000
64 #define MDIO_NAME_LEN 32
67 struct list_head link;
68 char name[MDIO_NAME_LEN];
70 int (*read)(struct mii_dev *bus, int addr, int devad, int reg);
71 int (*write)(struct mii_dev *bus, int addr, int devad, int reg,
73 int (*reset)(struct mii_dev *bus);
74 struct phy_device *phymap[PHY_MAX_ADDR];
78 /* struct phy_driver: a structure which defines PHY behavior
80 * uid will contain a number which represents the PHY. During
81 * startup, the driver will poll the PHY to find out what its
82 * UID--as defined by registers 2 and 3--is. The 32-bit result
83 * gotten from the PHY will be masked to
84 * discard any bits which may change based on revision numbers
85 * unimportant to functionality
96 /* Called to do any driver startup necessities */
97 /* Will be called during phy_connect */
98 int (*probe)(struct phy_device *phydev);
100 /* Called to configure the PHY, and modify the controller
101 * based on the results. Should be called after phy_connect */
102 int (*config)(struct phy_device *phydev);
104 /* Called when starting up the controller */
105 int (*startup)(struct phy_device *phydev);
107 /* Called when bringing down the controller */
108 int (*shutdown)(struct phy_device *phydev);
110 int (*readext)(struct phy_device *phydev, int addr, int devad, int reg);
111 int (*writeext)(struct phy_device *phydev, int addr, int devad, int reg,
114 /* Phy specific driver override for reading a MMD register */
115 int (*read_mmd)(struct phy_device *phydev, int devad, int reg);
117 /* Phy specific driver override for writing a MMD register */
118 int (*write_mmd)(struct phy_device *phydev, int devad, int reg,
121 struct list_head list;
123 /* driver private data */
128 /* Information about the PHY type */
129 /* And management functions */
131 struct phy_driver *drv;
138 struct eth_device *dev;
141 /* forced speed & duplex (no autoneg)
142 * partner speed & duplex & pause (autoneg)
147 /* The most recently read link state */
150 phy_interface_t interface;
174 * phy_read - Convenience function for reading a given PHY register
175 * @phydev: the phy_device struct
176 * @devad: The MMD to read from
177 * @regnum: register number to read
178 * @return: value for success or negative errno for failure
180 static inline int phy_read(struct phy_device *phydev, int devad, int regnum)
182 struct mii_dev *bus = phydev->bus;
184 if (!bus || !bus->read) {
185 debug("%s: No bus configured\n", __func__);
189 return bus->read(bus, phydev->addr, devad, regnum);
193 * phy_write - Convenience function for writing a given PHY register
194 * @phydev: the phy_device struct
195 * @devad: The MMD to read from
196 * @regnum: register number to write
197 * @val: value to write to @regnum
198 * @return: 0 for success or negative errno for failure
200 static inline int phy_write(struct phy_device *phydev, int devad, int regnum,
203 struct mii_dev *bus = phydev->bus;
205 if (!bus || !bus->read) {
206 debug("%s: No bus configured\n", __func__);
210 return bus->write(bus, phydev->addr, devad, regnum, val);
214 * phy_mmd_start_indirect - Convenience function for writing MMD registers
215 * @phydev: the phy_device struct
216 * @devad: The MMD to read from
217 * @regnum: register number to write
220 static inline void phy_mmd_start_indirect(struct phy_device *phydev, int devad,
223 /* Write the desired MMD Devad */
224 phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_CTRL, devad);
226 /* Write the desired MMD register address */
227 phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA, regnum);
229 /* Select the Function : DATA with no post increment */
230 phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_CTRL,
231 (devad | MII_MMD_CTRL_NOINCR));
235 * phy_read_mmd - Convenience function for reading a register
236 * from an MMD on a given PHY.
237 * @phydev: The phy_device struct
238 * @devad: The MMD to read from
239 * @regnum: The register on the MMD to read
240 * @return: Value for success or negative errno for failure
242 static inline int phy_read_mmd(struct phy_device *phydev, int devad,
245 struct phy_driver *drv = phydev->drv;
247 if (regnum > (u16)~0 || devad > 32)
250 /* driver-specific access */
252 return drv->read_mmd(phydev, devad, regnum);
254 /* direct C45 / C22 access */
255 if ((drv->features & PHY_10G_FEATURES) == PHY_10G_FEATURES ||
256 devad == MDIO_DEVAD_NONE || !devad)
257 return phy_read(phydev, devad, regnum);
259 /* indirect C22 access */
260 phy_mmd_start_indirect(phydev, devad, regnum);
262 /* Read the content of the MMD's selected register */
263 return phy_read(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA);
267 * phy_write_mmd - Convenience function for writing a register
268 * on an MMD on a given PHY.
269 * @phydev: The phy_device struct
270 * @devad: The MMD to read from
271 * @regnum: The register on the MMD to read
272 * @val: value to write to @regnum
273 * @return: 0 for success or negative errno for failure
275 static inline int phy_write_mmd(struct phy_device *phydev, int devad,
278 struct phy_driver *drv = phydev->drv;
280 if (regnum > (u16)~0 || devad > 32)
283 /* driver-specific access */
285 return drv->write_mmd(phydev, devad, regnum, val);
287 /* direct C45 / C22 access */
288 if ((drv->features & PHY_10G_FEATURES) == PHY_10G_FEATURES ||
289 devad == MDIO_DEVAD_NONE || !devad)
290 return phy_write(phydev, devad, regnum, val);
292 /* indirect C22 access */
293 phy_mmd_start_indirect(phydev, devad, regnum);
295 /* Write the data into MMD's selected register */
296 return phy_write(phydev, MDIO_DEVAD_NONE, MII_MMD_DATA, val);
300 * phy_set_bits_mmd - Convenience function for setting bits in a register
302 * @phydev: the phy_device struct
303 * @devad: the MMD containing register to modify
304 * @regnum: register number to modify
306 * @return: 0 for success or negative errno for failure
308 static inline int phy_set_bits_mmd(struct phy_device *phydev, int devad,
313 value = phy_read_mmd(phydev, devad, regnum);
319 ret = phy_write_mmd(phydev, devad, regnum, value);
327 * phy_clear_bits_mmd - Convenience function for clearing bits in a register
329 * @phydev: the phy_device struct
330 * @devad: the MMD containing register to modify
331 * @regnum: register number to modify
332 * @val: bits to clear
333 * @return: 0 for success or negative errno for failure
335 static inline int phy_clear_bits_mmd(struct phy_device *phydev, int devad,
340 value = phy_read_mmd(phydev, devad, regnum);
346 ret = phy_write_mmd(phydev, devad, regnum, value);
353 #ifdef CONFIG_PHYLIB_10G
354 extern struct phy_driver gen10g_driver;
357 * List all 10G interfaces here, the assumption being that PHYs on these
360 static inline int is_10g_interface(phy_interface_t interface)
362 return interface == PHY_INTERFACE_MODE_XGMII ||
363 interface == PHY_INTERFACE_MODE_USXGMII ||
364 interface == PHY_INTERFACE_MODE_XFI;
370 * phy_init() - Initializes the PHY drivers
371 * This function registers all available PHY drivers
373 * @return: 0 if OK, -ve on error
378 * phy_reset() - Resets the specified PHY
379 * Issues a reset of the PHY and waits for it to complete
381 * @phydev: PHY to reset
382 * @return: 0 if OK, -ve on error
384 int phy_reset(struct phy_device *phydev);
387 * phy_find_by_mask() - Searches for a PHY on the specified MDIO bus
388 * The function checks the PHY addresses flagged in phy_mask and returns a
389 * phy_device pointer if it detects a PHY.
390 * This function should only be called if just one PHY is expected to be present
391 * in the set of addresses flagged in phy_mask. If multiple PHYs are present,
392 * it is undefined which of these PHYs is returned.
394 * @bus: MII/MDIO bus to scan
395 * @phy_mask: bitmap of PYH addresses to scan
396 * @interface: type of MAC-PHY interface
397 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
399 struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask,
400 phy_interface_t interface);
405 * phy_connect_dev() - Associates the given pair of PHY and Ethernet devices
406 * @phydev: PHY device
407 * @dev: Ethernet device
409 void phy_connect_dev(struct phy_device *phydev, struct udevice *dev);
412 * phy_connect() - Creates a PHY device for the Ethernet interface
413 * Creates a PHY device for the PHY at the given address, if one doesn't exist
414 * already, and associates it with the Ethernet device.
415 * The function may be called with addr <= 0, in this case addr value is ignored
416 * and the bus is scanned to detect a PHY. Scanning should only be used if only
417 * one PHY is expected to be present on the MDIO bus, otherwise it is undefined
418 * which PHY is returned.
420 * @bus: MII/MDIO bus that hosts the PHY
421 * @addr: PHY address on MDIO bus
422 * @dev: Ethernet device to associate to the PHY
423 * @interface: type of MAC-PHY interface
424 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
426 struct phy_device *phy_connect(struct mii_dev *bus, int addr,
428 phy_interface_t interface);
430 static inline ofnode phy_get_ofnode(struct phy_device *phydev)
432 if (ofnode_valid(phydev->node))
435 return dev_ofnode(phydev->dev);
440 * phy_connect_dev() - Associates the given pair of PHY and Ethernet devices
441 * @phydev: PHY device
442 * @dev: Ethernet device
444 void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev);
447 * phy_connect() - Creates a PHY device for the Ethernet interface
448 * Creates a PHY device for the PHY at the given address, if one doesn't exist
449 * already, and associates it with the Ethernet device.
450 * The function may be called with addr <= 0, in this case addr value is ignored
451 * and the bus is scanned to detect a PHY. Scanning should only be used if only
452 * one PHY is expected to be present on the MDIO bus, otherwise it is undefined
453 * which PHY is returned.
455 * @bus: MII/MDIO bus that hosts the PHY
456 * @addr: PHY address on MDIO bus
457 * @dev: Ethernet device to associate to the PHY
458 * @interface: type of MAC-PHY interface
459 * @return: pointer to phy_device if a PHY is found, or NULL otherwise
461 struct phy_device *phy_connect(struct mii_dev *bus, int addr,
462 struct eth_device *dev,
463 phy_interface_t interface);
465 static inline ofnode phy_get_ofnode(struct phy_device *phydev)
467 return ofnode_null();
470 int phy_startup(struct phy_device *phydev);
471 int phy_config(struct phy_device *phydev);
472 int phy_shutdown(struct phy_device *phydev);
473 int phy_register(struct phy_driver *drv);
474 int phy_set_supported(struct phy_device *phydev, u32 max_speed);
475 int genphy_config_aneg(struct phy_device *phydev);
476 int genphy_restart_aneg(struct phy_device *phydev);
477 int genphy_update_link(struct phy_device *phydev);
478 int genphy_parse_link(struct phy_device *phydev);
479 int genphy_config(struct phy_device *phydev);
480 int genphy_startup(struct phy_device *phydev);
481 int genphy_shutdown(struct phy_device *phydev);
482 int gen10g_config(struct phy_device *phydev);
483 int gen10g_startup(struct phy_device *phydev);
484 int gen10g_shutdown(struct phy_device *phydev);
485 int gen10g_discover_mmds(struct phy_device *phydev);
487 int phy_b53_init(void);
488 int phy_mv88e61xx_init(void);
489 int phy_aquantia_init(void);
490 int phy_atheros_init(void);
491 int phy_broadcom_init(void);
492 int phy_cortina_init(void);
493 int phy_davicom_init(void);
494 int phy_et1011c_init(void);
495 int phy_lxt_init(void);
496 int phy_marvell_init(void);
497 int phy_micrel_ksz8xxx_init(void);
498 int phy_micrel_ksz90x1_init(void);
499 int phy_meson_gxl_init(void);
500 int phy_natsemi_init(void);
501 int phy_realtek_init(void);
502 int phy_smsc_init(void);
503 int phy_teranetics_init(void);
504 int phy_ti_init(void);
505 int phy_vitesse_init(void);
506 int phy_xilinx_init(void);
507 int phy_mscc_init(void);
508 int phy_fixed_init(void);
509 int phy_ncsi_init(void);
510 int phy_xilinx_gmii2rgmii_init(void);
512 int board_phy_config(struct phy_device *phydev);
513 int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id);
516 * phy_get_interface_by_name() - Look up a PHY interface name
518 * @str: PHY interface name, e.g. "mii"
519 * @return: PHY_INTERFACE_MODE_... value, or -1 if not found
521 int phy_get_interface_by_name(const char *str);
524 * phy_interface_is_rgmii - Convenience function for testing if a PHY interface
525 * is RGMII (all variants)
526 * @phydev: the phy_device struct
527 * @return: true if MII bus is RGMII or false if it is not
529 static inline bool phy_interface_is_rgmii(struct phy_device *phydev)
531 return phydev->interface >= PHY_INTERFACE_MODE_RGMII &&
532 phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID;
536 * phy_interface_is_sgmii - Convenience function for testing if a PHY interface
537 * is SGMII (all variants)
538 * @phydev: the phy_device struct
539 * @return: true if MII bus is SGMII or false if it is not
541 static inline bool phy_interface_is_sgmii(struct phy_device *phydev)
543 return phydev->interface >= PHY_INTERFACE_MODE_SGMII &&
544 phydev->interface <= PHY_INTERFACE_MODE_QSGMII;
547 /* PHY UIDs for various PHYs that are referenced in external code */
548 #define PHY_UID_CS4340 0x13e51002
549 #define PHY_UID_CS4223 0x03e57003
550 #define PHY_UID_TN2020 0x00a19410
551 #define PHY_UID_IN112525_S03 0x02107440