1/*-
2 * Copyright (c) 2009, M. Warner Losh
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/sys/dev/mii/axphy.c 213893 2010-10-15 14:52:11Z marius $");
29
30/*
31 * driver for internal phy in the AX88x9x chips.
32 */
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/kernel.h>
37#include <sys/module.h>
38#include <sys/socket.h>
39#include <sys/bus.h>
40
41#include <net/if.h>
42#include <net/if_media.h>
43
44#include <dev/mii/mii.h>
45#include <dev/mii/miivar.h>
46#include "miidevs.h"
47
48#include "miibus_if.h"
49
50static int axphy_probe(device_t dev);
51static int axphy_attach(device_t dev);
52
53static device_method_t axphy_methods[] = {
54 /* device interface */
55 DEVMETHOD(device_probe, axphy_probe),
56 DEVMETHOD(device_attach, axphy_attach),
57 DEVMETHOD(device_detach, mii_phy_detach),
58 DEVMETHOD(device_shutdown, bus_generic_shutdown),
59 { 0, 0 }
60};
61
62static devclass_t axphy_devclass;
63
64static driver_t axphy_driver = {
65 "axphy",
66 axphy_methods,
67 sizeof(struct mii_softc)
68};
69
70DRIVER_MODULE(axphy, miibus, axphy_driver, axphy_devclass, 0, 0);
71
72static int axphy_service(struct mii_softc *, struct mii_data *, int);
73static void axphy_status(struct mii_softc *);
74
75static const struct mii_phydesc axphys[] = {
76 MII_PHY_DESC(ASIX, AX88X9X),
77 MII_PHY_END
78};
79
80static int
81axphy_probe(device_t dev)
82{
83
84 return (mii_phy_dev_probe(dev, axphys, BUS_PROBE_DEFAULT));
85}
86
87static int
88axphy_attach(device_t dev)
89{
90 struct mii_softc *sc;
91 struct mii_attach_args *ma;
92 struct mii_data *mii;
93
94 sc = device_get_softc(dev);
95 ma = device_get_ivars(dev);
96 sc->mii_dev = device_get_parent(dev);
97 mii = ma->mii_data;
98 LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
99
100 sc->mii_flags = miibus_get_flags(dev);
101 sc->mii_inst = mii->mii_instance++;
102 sc->mii_phy = ma->mii_phyno;
103 sc->mii_service = axphy_service;
104 sc->mii_pdata = mii;
105
106 sc->mii_flags |= MIIF_NOISOLATE;
107
108 mii_phy_reset(sc);
109
110 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
111 device_printf(dev, " ");
112 mii_phy_add_media(sc);
113 printf("\n");
114
115 MIIBUS_MEDIAINIT(sc->mii_dev);
116 mii_phy_setmedia(sc);
117
118 return (0);
119}
120
121static int
122axphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
123{
124
125 switch (cmd) {
126 case MII_POLLSTAT:
127 break;
128
129 case MII_MEDIACHG:
130 /*
131 * If the interface is not up, don't do anything.
132 */
133 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
134 break;
135
136 mii_phy_setmedia(sc);
137 break;
138
139 case MII_TICK:
140 if (mii_phy_tick(sc) == EJUSTRETURN)
141 return (0);
142 break;
143 }
144
145 /* Update the media status. */
146 axphy_status(sc);
147
148 /* Callback if something changed. */
149 mii_phy_update(sc, cmd);
150 return (0);
151}
152
153static void
154axphy_status(struct mii_softc *sc)
155{
156 struct mii_data *mii = sc->mii_pdata;
157 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
158 int bmsr, bmcr;
159
160 mii->mii_media_status = IFM_AVALID;
161 mii->mii_media_active = IFM_ETHER;
162
163 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
164 if (bmsr & BMSR_LINK)
165 mii->mii_media_status |= IFM_ACTIVE;
166
167 bmcr = PHY_READ(sc, MII_BMCR);
168 if (bmcr & BMCR_ISO) {
169 mii->mii_media_active |= IFM_NONE;
170 mii->mii_media_status = 0;
171 return;
172 }
173
174 if (bmcr & BMCR_LOOP)
175 mii->mii_media_active |= IFM_LOOP;
176
177 if (bmcr & BMCR_AUTOEN) {
178 if ((bmsr & BMSR_ACOMP) == 0) {
179 mii->mii_media_active |= IFM_NONE;
180 return;
181 }
182
183#if 0
184 scr = PHY_READ(sc, MII_AXPHY_SCR);
185 if (scr & SCR_S100)
186 mii->mii_media_active |= IFM_100_TX;
187 else
188 mii->mii_media_active |= IFM_10_T;
189 if (scr & SCR_FDX)
190 mii->mii_media_active |= IFM_FDX;
191 else
192 mii->mii_media_active |= IFM_HDX;
193#endif
194 } else
195 mii->mii_media_active = ife->ifm_media;
196}