xref: /freebsd/sys/dev/mii/ukphy.c (revision 52267f7411adcc76ede961420e08c0e42f42d415)
1 /*	$NetBSD: ukphy.c,v 1.2 1999/04/23 04:24:32 thorpej Exp $	*/
2 
3 /*-
4  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9  * NASA Ames Research Center, and by Frank van der Linden.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. All advertising materials mentioning features or use of this software
20  *    must display the following acknowledgement:
21  *	This product includes software developed by the NetBSD
22  *	Foundation, Inc. and its contributors.
23  * 4. Neither the name of The NetBSD Foundation nor the names of its
24  *    contributors may be used to endorse or promote products derived
25  *    from this software without specific prior written permission.
26  *
27  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37  * POSSIBILITY OF SUCH DAMAGE.
38  */
39 
40 /*-
41  * Copyright (c) 1997 Manuel Bouyer.  All rights reserved.
42  *
43  * Redistribution and use in source and binary forms, with or without
44  * modification, are permitted provided that the following conditions
45  * are met:
46  * 1. Redistributions of source code must retain the above copyright
47  *    notice, this list of conditions and the following disclaimer.
48  * 2. Redistributions in binary form must reproduce the above copyright
49  *    notice, this list of conditions and the following disclaimer in the
50  *    documentation and/or other materials provided with the distribution.
51  * 3. All advertising materials mentioning features or use of this software
52  *    must display the following acknowledgement:
53  *	This product includes software developed by Manuel Bouyer.
54  * 4. The name of the author may not be used to endorse or promote products
55  *    derived from this software without specific prior written permission.
56  *
57  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
58  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
59  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
60  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
61  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
62  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
63  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
64  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
65  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
66  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
67  */
68 
69 #include <sys/cdefs.h>
70 __FBSDID("$FreeBSD$");
71 
72 /*
73  * driver for generic unknown PHYs
74  */
75 
76 #include <sys/param.h>
77 #include <sys/systm.h>
78 #include <sys/kernel.h>
79 #include <sys/socket.h>
80 #include <sys/errno.h>
81 #include <sys/module.h>
82 #include <sys/bus.h>
83 
84 #include <net/if.h>
85 #include <net/if_media.h>
86 
87 #include <dev/mii/mii.h>
88 #include <dev/mii/miivar.h>
89 
90 #include "miibus_if.h"
91 
92 static int ukphy_probe(device_t);
93 static int ukphy_attach(device_t);
94 
95 static device_method_t ukphy_methods[] = {
96 	/* device interface */
97 	DEVMETHOD(device_probe,		ukphy_probe),
98 	DEVMETHOD(device_attach,	ukphy_attach),
99 	DEVMETHOD(device_detach,	mii_phy_detach),
100 	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
101 	{ 0, 0 }
102 };
103 
104 static devclass_t ukphy_devclass;
105 
106 static driver_t ukphy_driver = {
107 	"ukphy",
108 	ukphy_methods,
109 	sizeof(struct mii_softc)
110 };
111 
112 DRIVER_MODULE(ukphy, miibus, ukphy_driver, ukphy_devclass, 0, 0);
113 
114 static int	ukphy_service(struct mii_softc *, struct mii_data *, int);
115 
116 static int
117 ukphy_probe(device_t dev)
118 {
119 
120 	/*
121 	 * We know something is here, so always match at a low priority.
122 	 */
123 	device_set_desc(dev, "Generic IEEE 802.3u media interface");
124 	return (BUS_PROBE_GENERIC);
125 }
126 
127 static int
128 ukphy_attach(device_t dev)
129 {
130 	struct mii_softc *sc;
131 	struct mii_attach_args *ma;
132 	struct mii_data *mii;
133 
134 	sc = device_get_softc(dev);
135 	ma = device_get_ivars(dev);
136 	sc->mii_dev = device_get_parent(dev);
137 	mii = device_get_softc(sc->mii_dev);
138 	LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);
139 
140 	if (bootverbose)
141 		device_printf(dev, "OUI 0x%06x, model 0x%04x, rev. %d\n",
142 		    MII_OUI(ma->mii_id1, ma->mii_id2),
143 		    MII_MODEL(ma->mii_id2), MII_REV(ma->mii_id2));
144 
145 	sc->mii_inst = mii->mii_instance;
146 	sc->mii_phy = ma->mii_phyno;
147 	sc->mii_service = ukphy_service;
148 	sc->mii_pdata = mii;
149 
150 	mii->mii_instance++;
151 
152 	mii_phy_reset(sc);
153 
154 	sc->mii_capabilities =
155 	    PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
156 	if (sc->mii_capabilities & BMSR_EXTSTAT)
157 		sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
158 	device_printf(dev, " ");
159 	mii_phy_add_media(sc);
160 	printf("\n");
161 
162 	MIIBUS_MEDIAINIT(sc->mii_dev);
163 	mii_phy_setmedia(sc);
164 
165 	return (0);
166 }
167 
168 static int
169 ukphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
170 {
171 	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
172 	int reg;
173 
174 	switch (cmd) {
175 	case MII_POLLSTAT:
176 		/*
177 		 * If we're not polling our PHY instance, just return.
178 		 */
179 		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
180 			return (0);
181 		break;
182 
183 	case MII_MEDIACHG:
184 		/*
185 		 * If the media indicates a different PHY instance,
186 		 * isolate ourselves.
187 		 */
188 		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
189 			reg = PHY_READ(sc, MII_BMCR);
190 			PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
191 			return (0);
192 		}
193 
194 		/*
195 		 * If the interface is not up, don't do anything.
196 		 */
197 		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
198 			break;
199 
200 		mii_phy_setmedia(sc);
201 		break;
202 
203 	case MII_TICK:
204 		/*
205 		 * If we're not currently selected, just return.
206 		 */
207 		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
208 			return (0);
209 		if (mii_phy_tick(sc) == EJUSTRETURN)
210 			return (0);
211 		break;
212 	}
213 
214 	/* Update the media status. */
215 	ukphy_status(sc);
216 
217 	/* Callback if something changed. */
218 	mii_phy_update(sc, cmd);
219 	return (0);
220 }
221