1 /*-
2 * Copyright (c) 2001 Jonathan Lemon
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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 */
30
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD: stable/9/sys/dev/fxp/inphy.c 227229 2011-11-06 17:23:49Z marius $");
33
34 /*
35 * driver for Intel 82553 and 82555 PHYs
36 */
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/kernel.h>
41 #include <sys/module.h>
42 #include <sys/socket.h>
43 #include <sys/bus.h>
44
45 #include <net/if.h>
46 #include <net/if_media.h>
47
48 #include <dev/mii/mii.h>
49 #include <dev/mii/miivar.h>
50 #include "miidevs.h"
51
52 #include <dev/fxp/inphyreg.h>
53
54 #include "miibus_if.h"
55
56 static int inphy_probe(device_t dev);
57 static int inphy_attach(device_t dev);
58
59 static device_method_t inphy_methods[] = {
60 /* device interface */
61 DEVMETHOD(device_probe, inphy_probe),
62 DEVMETHOD(device_attach, inphy_attach),
63 DEVMETHOD(device_detach, mii_phy_detach),
64 DEVMETHOD(device_shutdown, bus_generic_shutdown),
65 { 0, 0 }
66 };
67
68 static devclass_t inphy_devclass;
69
70 static driver_t inphy_driver = {
71 "inphy",
72 inphy_methods,
73 sizeof(struct mii_softc)
74 };
75
76 DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0);
77
78 static int inphy_service(struct mii_softc *, struct mii_data *, int);
79 static void inphy_status(struct mii_softc *);
80 static void inphy_reset(struct mii_softc *);
81
82 static const struct mii_phydesc inphys[] = {
83 MII_PHY_DESC(xxINTEL, I82553),
84 MII_PHY_DESC(yyINTEL, I82553),
85 MII_PHY_DESC(yyINTEL, I82555),
86 MII_PHY_DESC(yyINTEL, I82562EM),
87 MII_PHY_DESC(yyINTEL, I82562ET),
88 MII_PHY_END
89 };
90
91 static const struct mii_phy_funcs inphy_funcs = {
92 inphy_service,
93 inphy_status,
94 inphy_reset
95 };
96
97 static int
inphy_probe(device_t dev)98 inphy_probe(device_t dev)
99 {
100
101 return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT));
102 }
103
104 static int
inphy_attach(device_t dev)105 inphy_attach(device_t dev)
106 {
107
108 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &inphy_funcs, 1);
109 return (0);
110 }
111
112 static int
inphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)113 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
114 {
115
116 switch (cmd) {
117 case MII_POLLSTAT:
118 break;
119
120 case MII_MEDIACHG:
121 /*
122 * If the interface is not up, don't do anything.
123 */
124 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
125 break;
126
127 mii_phy_setmedia(sc);
128 break;
129
130 case MII_TICK:
131 if (mii_phy_tick(sc) == EJUSTRETURN)
132 return (0);
133 break;
134 }
135
136 /* Update the media status. */
137 PHY_STATUS(sc);
138
139 /* Callback if something changed. */
140 mii_phy_update(sc, cmd);
141 return (0);
142 }
143
144 static void
inphy_status(struct mii_softc * sc)145 inphy_status(struct mii_softc *sc)
146 {
147 struct mii_data *mii = sc->mii_pdata;
148 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
149 int bmsr, bmcr, scr;
150
151 mii->mii_media_status = IFM_AVALID;
152 mii->mii_media_active = IFM_ETHER;
153
154 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
155 if (bmsr & BMSR_LINK)
156 mii->mii_media_status |= IFM_ACTIVE;
157
158 bmcr = PHY_READ(sc, MII_BMCR);
159 if (bmcr & BMCR_ISO) {
160 mii->mii_media_active |= IFM_NONE;
161 mii->mii_media_status = 0;
162 return;
163 }
164
165 if (bmcr & BMCR_LOOP)
166 mii->mii_media_active |= IFM_LOOP;
167
168 if (bmcr & BMCR_AUTOEN) {
169 if ((bmsr & BMSR_ACOMP) == 0) {
170 mii->mii_media_active |= IFM_NONE;
171 return;
172 }
173
174 scr = PHY_READ(sc, MII_INPHY_SCR);
175 if (scr & SCR_S100)
176 mii->mii_media_active |= IFM_100_TX;
177 else
178 mii->mii_media_active |= IFM_10_T;
179 if (scr & SCR_FDX)
180 mii->mii_media_active |=
181 IFM_FDX | mii_phy_flowstatus(sc);
182 else
183 mii->mii_media_active |= IFM_HDX;
184 } else
185 mii->mii_media_active = ife->ifm_media;
186 }
187
188 static void
inphy_reset(struct mii_softc * sc)189 inphy_reset(struct mii_softc *sc)
190 {
191
192 mii_phy_reset(sc);
193
194 /* Ensure Bay flow control is disabled. */
195 PHY_WRITE(sc, MII_INPHY_SCR,
196 PHY_READ(sc, MII_INPHY_SCR) & ~SCR_FLOWCTL);
197 }
198