1 // SPDX-License-Identifier: GPL-2.0+
8  * This provides a bit-banged interface to the ethernet MII management
50 		if (strcmp(dev->name, devname) == 0)  in miiphy_get_dev_by_name()
78 	INIT_LIST_HEAD(&bus->link);  in mdio_alloc()
90 	if (!bus || !bus->read || !bus->write)  in mdio_register()
91 		return -1;  in mdio_register()
94 	if (miiphy_get_dev_by_name(bus->name)) {  in mdio_register()
96 			bus->name);  in mdio_register()
97 		return -1;  in mdio_register()
101 	list_add_tail(&bus->link, &mii_devs);  in mdio_register()
114 	ret = snprintf(bus->name, MDIO_NAME_LEN, "eth%d", seq);  in mdio_register_seq()
127 	list_del(&bus->link);  in mdio_unregister()
143 		printf("%s:\n", bus->name);  in mdio_list_devices()
146 			struct phy_device *phydev = bus->phymap[i];  in mdio_list_devices()
149 				printf("%x - %s", i, phydev->drv->name);  in mdio_list_devices()
151 				if (phydev->dev)  in mdio_list_devices()
152 					printf(" <--> %s\n", phydev->dev->name);  in mdio_list_devices()
195 			if (!bus->phymap[i] || !bus->phymap[i]->dev)  in mdio_phydev_for_ethname()
198 			if (strcmp(bus->phymap[i]->dev->name, ethname) == 0)  in mdio_phydev_for_ethname()
199 				return bus->phymap[i];  in mdio_phydev_for_ethname()
210 		return current_mii->name;  in miiphy_get_current_dev()
219 		if (strcmp(current_mii->name, devname) == 0)  in miiphy_get_active_dev()
249 	ret = bus->read(bus, addr, MDIO_DEVAD_NONE, reg);  in miiphy_read()
274 		return bus->write(bus, addr, MDIO_DEVAD_NONE, reg, value);  in miiphy_write()
291 		printf("'%s' ", dev->name);  in miiphy_listdev()
296 		printf("Current device: '%s'\n", current_mii->name);  in miiphy_listdev()
320 		return -1;  in miiphy_info()
328 		return -1;  in miiphy_info()
333 		return -1;  in miiphy_info()
361 		return -1;  in miiphy_reset()
365 		return -1;  in miiphy_reset()
372 	 * auto-clearing).  This should happen within 0.5 seconds per the  in miiphy_reset()
376 	while (((reg & 0x8000) != 0) && timeout--) {  in miiphy_reset()
379 			return -1;  in miiphy_reset()
381 		udelay(1000);  in miiphy_reset()
387 		return -1;  in miiphy_reset()
395  * Determine the ethernet speed (10/100/1000).  Return 10 on error.
405 	 * Check for 1000BASE-X.  If it is supported, then assume that the speed  in miiphy_speed()
406 	 * is 1000.  in miiphy_speed()
412 	 * No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set.  in miiphy_speed()
414 	/* Check for 1000BASE-T. */  in miiphy_speed()
416 		printf("PHY 1000BT status");  in miiphy_speed()
429 	/* Check if auto-negotiation is on. */  in miiphy_speed()
431 		/* Get auto-negotiation results. */  in miiphy_speed()
447 	printf(" read failed, assuming 10BASE-T\n");  in miiphy_speed()
462 	/* Check for 1000BASE-X. */  in miiphy_duplex()
464 		/* 1000BASE-X */  in miiphy_duplex()
466 			printf("1000BASE-X PHY AN duplex");  in miiphy_duplex()
471 	 * No 1000BASE-X, so assume 1000BASE-T/100BASE-TX/10BASE-T register set.  in miiphy_duplex()
473 	/* Check for 1000BASE-T. */  in miiphy_duplex()
475 		printf("PHY 1000BT status");  in miiphy_duplex()
492 	/* Check if auto-negotiation is on. */  in miiphy_duplex()
494 		/* Get auto-negotiation results. */  in miiphy_duplex()
517  * Return 1 if PHY supports 1000BASE-X, 0 if PHY supports 10BASE-T/100BASE-TX/
518  * 1000BASE-T, or on error.
527 			"1000BASE-X\n");  in miiphy_is_1000base_x()