FreeBSD/Linux Kernel Cross Reference
sys/dev/mii/pnaphy.c
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 __FBSDID("$FreeBSD$");
38
39 /*
40 * driver for homePNA PHYs
41 * This is really just a stub that allows us to identify homePNA-based
42 * transceicers and display the link status. MII-based homePNA PHYs
43 * only support one media type and no autonegotiation. If we were
44 * really clever, we could tweak some of the vendor-specific registers
45 * to optimize the link.
46 */
47
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/kernel.h>
51 #include <sys/socket.h>
52 #include <sys/errno.h>
53 #include <sys/module.h>
54 #include <sys/bus.h>
55
56 #include <net/if.h>
57 #include <net/if_media.h>
58
59 #include <dev/mii/mii.h>
60 #include <dev/mii/miivar.h>
61 #include "miidevs.h"
62
63 #include "miibus_if.h"
64
65 static int pnaphy_probe(device_t);
66 static int pnaphy_attach(device_t);
67
68 static device_method_t pnaphy_methods[] = {
69 /* device interface */
70 DEVMETHOD(device_probe, pnaphy_probe),
71 DEVMETHOD(device_attach, pnaphy_attach),
72 DEVMETHOD(device_detach, mii_phy_detach),
73 DEVMETHOD(device_shutdown, bus_generic_shutdown),
74 DEVMETHOD_END
75 };
76
77 static driver_t pnaphy_driver = {
78 "pnaphy",
79 pnaphy_methods,
80 sizeof(struct mii_softc)
81 };
82
83 DRIVER_MODULE(pnaphy, miibus, pnaphy_driver, 0, 0);
84
85 static int pnaphy_service(struct mii_softc *, struct mii_data *,int);
86
87 static const struct mii_phydesc pnaphys[] = {
88 MII_PHY_DESC(yyAMD, 79c901home),
89 MII_PHY_END
90 };
91
92 static const struct mii_phy_funcs pnaphy_funcs = {
93 pnaphy_service,
94 ukphy_status,
95 mii_phy_reset
96 };
97
98 static int
99 pnaphy_probe(device_t dev)
100 {
101
102 return (mii_phy_dev_probe(dev, pnaphys, BUS_PROBE_DEFAULT));
103 }
104
105 static int
106 pnaphy_attach(device_t dev)
107 {
108
109 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_IS_HPNA |
110 MIIF_NOMANPAUSE, &pnaphy_funcs, 1);
111 return (0);
112 }
113
114 static int
115 pnaphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
116 {
117 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
118
119 switch (cmd) {
120 case MII_POLLSTAT:
121 break;
122
123 case MII_MEDIACHG:
124 switch (IFM_SUBTYPE(ife->ifm_media)) {
125 case IFM_HPNA_1:
126 mii_phy_setmedia(sc);
127 break;
128 default:
129 return (EINVAL);
130 }
131 break;
132
133 case MII_TICK:
134 if (mii_phy_tick(sc) == EJUSTRETURN)
135 return (0);
136 break;
137 }
138
139 /* Update the media status. */
140 PHY_STATUS(sc);
141 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T)
142 mii->mii_media_active = IFM_ETHER | IFM_HPNA_1;
143
144 /* Callback if something changed. */
145 mii_phy_update(sc, cmd);
146 return (0);
147 }
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