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