1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2013 Luiz Otavio O Souza.
5 * Copyright (c) 2011-2012 Stefan Bethke.
6 * Copyright (c) 2012 Adrian Chadd.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $FreeBSD$
31 */
32
33#include <sys/param.h>
34#include <sys/bus.h>
35#include <sys/errno.h>
36#include <sys/kernel.h>
37#include <sys/lock.h>
38#include <sys/mutex.h>
39#include <sys/systm.h>
40#include <sys/socket.h>
41
42#include <net/if.h>
43
44#include <dev/mii/mii.h>
45
46#include <dev/etherswitch/etherswitch.h>
47#include <dev/etherswitch/ip17x/ip17x_phy.h>
48#include <dev/etherswitch/ip17x/ip17x_reg.h>
49#include <dev/etherswitch/ip17x/ip17x_var.h>
50
51#include "mdio_if.h"
52#include "miibus_if.h"
53#include "etherswitch_if.h"
54
55int
56ip17x_readphy(device_t dev, int phy, int reg)
57{
58	struct ip17x_softc *sc;
59	int data;
60
61	sc = device_get_softc(dev);
62	IP17X_LOCK_ASSERT(sc, MA_NOTOWNED);
63
64	if (phy < 0 || phy >= 32)
65		return (ENXIO);
66	if (reg < 0 || reg >= 32)
67		return (ENXIO);
68
69	IP17X_LOCK(sc);
70	data = MDIO_READREG(device_get_parent(dev), phy, reg);
71	IP17X_UNLOCK(sc);
72
73	return (data);
74}
75
76int
77ip17x_writephy(device_t dev, int phy, int reg, int data)
78{
79	struct ip17x_softc *sc;
80	int err;
81
82	sc = device_get_softc(dev);
83	IP17X_LOCK_ASSERT(sc, MA_NOTOWNED);
84
85	if (phy < 0 || phy >= 32)
86		return (ENXIO);
87	if (reg < 0 || reg >= 32)
88		return (ENXIO);
89
90	IP17X_LOCK(sc);
91	err = MDIO_WRITEREG(device_get_parent(dev), phy, reg, data);
92	IP17X_UNLOCK(sc);
93
94	return (err);
95}
96
97int
98ip17x_updatephy(device_t dev, int phy, int reg, int mask, int value)
99{
100	int val;
101
102	val = ip17x_readphy(dev, phy, reg);
103	val &= ~mask;
104	val |= value;
105	return (ip17x_writephy(dev, phy, reg, val));
106}
107