1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2000 Berkeley Software Design, Inc.
5 * Copyright (c) 1997, 1998, 1999, 2000
6 * Bill Paul <wpaul@osd.bsdi.com>. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Bill Paul.
19 * 4. Neither the name of the author nor the names of any co-contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
33 * THE POSSIBILITY OF SUCH DAMAGE.
34 */
35
36 #include <sys/cdefs.h>
37 /*
38 * driver for homePNA PHYs
39 * This is really just a stub that allows us to identify homePNA-based
40 * transceicers and display the link status. MII-based homePNA PHYs
41 * only support one media type and no autonegotiation. If we were
42 * really clever, we could tweak some of the vendor-specific registers
43 * to optimize the link.
44 */
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/kernel.h>
49 #include <sys/socket.h>
50 #include <sys/errno.h>
51 #include <sys/module.h>
52 #include <sys/bus.h>
53
54 #include <net/if.h>
55 #include <net/if_media.h>
56
57 #include <dev/mii/mii.h>
58 #include <dev/mii/miivar.h>
59 #include "miidevs.h"
60
61 #include "miibus_if.h"
62
63 static int pnaphy_probe(device_t);
64 static int pnaphy_attach(device_t);
65
66 static device_method_t pnaphy_methods[] = {
67 /* device interface */
68 DEVMETHOD(device_probe, pnaphy_probe),
69 DEVMETHOD(device_attach, pnaphy_attach),
70 DEVMETHOD(device_detach, mii_phy_detach),
71 DEVMETHOD(device_shutdown, bus_generic_shutdown),
72 DEVMETHOD_END
73 };
74
75 static driver_t pnaphy_driver = {
76 "pnaphy",
77 pnaphy_methods,
78 sizeof(struct mii_softc)
79 };
80
81 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, 0, 0);
82
83 static int pnaphy_service(struct mii_softc *, struct mii_data *,int);
84
85 static const struct mii_phydesc pnaphys[] = {
86 MII_PHY_DESC(yyAMD, 79c901home),
87 MII_PHY_END
88 };
89
90 static const struct mii_phy_funcs pnaphy_funcs = {
91 pnaphy_service,
92 ukphy_status,
93 mii_phy_reset
94 };
95
96 static int
pnaphy_probe(device_t dev)97 pnaphy_probe(device_t dev)
98 {
99
100 return (mii_phy_dev_probe(dev, pnaphys, BUS_PROBE_DEFAULT));
101 }
102
103 static int
pnaphy_attach(device_t dev)104 pnaphy_attach(device_t dev)
105 {
106
107 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_IS_HPNA |
108 MIIF_NOMANPAUSE, &pnaphy_funcs, 1);
109 return (0);
110 }
111
112 static int
pnaphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)113 pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
114 {
115 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
116
117 switch (cmd) {
118 case MII_POLLSTAT:
119 break;
120
121 case MII_MEDIACHG:
122 switch (IFM_SUBTYPE(ife->ifm_media)) {
123 case IFM_HPNA_1:
124 mii_phy_setmedia(sc);
125 break;
126 default:
127 return (EINVAL);
128 }
129 break;
130
131 case MII_TICK:
132 if (mii_phy_tick(sc) == EJUSTRETURN)
133 return (0);
134 break;
135 }
136
137 /* Update the media status. */
138 PHY_STATUS(sc);
139 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T)
140 mii->mii_media_active = IFM_ETHER | IFM_HPNA_1;
141
142 /* Callback if something changed. */
143 mii_phy_update(sc, cmd);
144 return (0);
145 }
146