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("$FreeBSD$");
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_var.h>
47 #include <net/if_media.h>
48
49 #include <dev/mii/mii.h>
50 #include <dev/mii/miivar.h>
51 #include "miidevs.h"
52
53 #include <dev/fxp/inphyreg.h>
54
55 #include "miibus_if.h"
56
57 static int inphy_probe(device_t dev);
58 static int inphy_attach(device_t dev);
59
60 static device_method_t inphy_methods[] = {
61 /* device interface */
62 DEVMETHOD(device_probe, inphy_probe),
63 DEVMETHOD(device_attach, inphy_attach),
64 DEVMETHOD(device_detach, mii_phy_detach),
65 DEVMETHOD(device_shutdown, bus_generic_shutdown),
66 { 0, 0 }
67 };
68
69 static devclass_t inphy_devclass;
70
71 static driver_t inphy_driver = {
72 "inphy",
73 inphy_methods,
74 sizeof(struct mii_softc)
75 };
76
77 DRIVER_MODULE(inphy, miibus, inphy_driver, inphy_devclass, 0, 0);
78
79 static int inphy_service(struct mii_softc *, struct mii_data *, int);
80 static void inphy_status(struct mii_softc *);
81 static void inphy_reset(struct mii_softc *);
82
83 static const struct mii_phydesc inphys[] = {
84 MII_PHY_DESC(xxINTEL, I82553),
85 MII_PHY_DESC(yyINTEL, I82553),
86 MII_PHY_DESC(yyINTEL, I82555),
87 MII_PHY_DESC(yyINTEL, I82562EM),
88 MII_PHY_DESC(yyINTEL, I82562ET),
89 MII_PHY_END
90 };
91
92 static const struct mii_phy_funcs inphy_funcs = {
93 inphy_service,
94 inphy_status,
95 inphy_reset
96 };
97
98 static int
inphy_probe(device_t dev)99 inphy_probe(device_t dev)
100 {
101
102 return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT));
103 }
104
105 static int
inphy_attach(device_t dev)106 inphy_attach(device_t dev)
107 {
108
109 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &inphy_funcs, 1);
110 return (0);
111 }
112
113 static int
inphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)114 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
115 {
116
117 switch (cmd) {
118 case MII_POLLSTAT:
119 break;
120
121 case MII_MEDIACHG:
122 /*
123 * If the interface is not up, don't do anything.
124 */
125 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
126 break;
127
128 mii_phy_setmedia(sc);
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
140 /* Callback if something changed. */
141 mii_phy_update(sc, cmd);
142 return (0);
143 }
144
145 static void
inphy_status(struct mii_softc * sc)146 inphy_status(struct mii_softc *sc)
147 {
148 struct mii_data *mii = sc->mii_pdata;
149 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
150 int bmsr, bmcr, scr;
151
152 mii->mii_media_status = IFM_AVALID;
153 mii->mii_media_active = IFM_ETHER;
154
155 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
156 if (bmsr & BMSR_LINK)
157 mii->mii_media_status |= IFM_ACTIVE;
158
159 bmcr = PHY_READ(sc, MII_BMCR);
160 if (bmcr & BMCR_ISO) {
161 mii->mii_media_active |= IFM_NONE;
162 mii->mii_media_status = 0;
163 return;
164 }
165
166 if (bmcr & BMCR_LOOP)
167 mii->mii_media_active |= IFM_LOOP;
168
169 if (bmcr & BMCR_AUTOEN) {
170 if ((bmsr & BMSR_ACOMP) == 0) {
171 mii->mii_media_active |= IFM_NONE;
172 return;
173 }
174
175 scr = PHY_READ(sc, MII_INPHY_SCR);
176 if (scr & SCR_S100)
177 mii->mii_media_active |= IFM_100_TX;
178 else
179 mii->mii_media_active |= IFM_10_T;
180 if (scr & SCR_FDX)
181 mii->mii_media_active |=
182 IFM_FDX | mii_phy_flowstatus(sc);
183 else
184 mii->mii_media_active |= IFM_HDX;
185 } else
186 mii->mii_media_active = ife->ifm_media;
187 }
188
189 static void
inphy_reset(struct mii_softc * sc)190 inphy_reset(struct mii_softc *sc)
191 {
192
193 mii_phy_reset(sc);
194
195 /* Ensure Bay flow control is disabled. */
196 PHY_WRITE(sc, MII_INPHY_SCR,
197 PHY_READ(sc, MII_INPHY_SCR) & ~SCR_FLOWCTL);
198 }
199