1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2001 Jonathan Lemon
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the author nor the names of any co-contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 */
32
33 #include <sys/cdefs.h>
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 driver_t inphy_driver = {
70 "inphy",
71 inphy_methods,
72 sizeof(struct mii_softc)
73 };
74
75 DRIVER_MODULE(inphy, miibus, inphy_driver, 0, 0);
76
77 static int inphy_service(struct mii_softc *, struct mii_data *, int);
78 static void inphy_status(struct mii_softc *);
79 static void inphy_reset(struct mii_softc *);
80
81 static const struct mii_phydesc inphys[] = {
82 MII_PHY_DESC(xxINTEL, I82553),
83 MII_PHY_DESC(yyINTEL, I82553),
84 MII_PHY_DESC(yyINTEL, I82555),
85 MII_PHY_DESC(yyINTEL, I82562EM),
86 MII_PHY_DESC(yyINTEL, I82562ET),
87 MII_PHY_END
88 };
89
90 static const struct mii_phy_funcs inphy_funcs = {
91 inphy_service,
92 inphy_status,
93 inphy_reset
94 };
95
96 static int
inphy_probe(device_t dev)97 inphy_probe(device_t dev)
98 {
99
100 return (mii_phy_dev_probe(dev, inphys, BUS_PROBE_DEFAULT));
101 }
102
103 static int
inphy_attach(device_t dev)104 inphy_attach(device_t dev)
105 {
106
107 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &inphy_funcs, 1);
108 return (0);
109 }
110
111 static int
inphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)112 inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
113 {
114
115 switch (cmd) {
116 case MII_POLLSTAT:
117 break;
118
119 case MII_MEDIACHG:
120 /*
121 * If the interface is not up, don't do anything.
122 */
123 if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
124 break;
125
126 mii_phy_setmedia(sc);
127 break;
128
129 case MII_TICK:
130 if (mii_phy_tick(sc) == EJUSTRETURN)
131 return (0);
132 break;
133 }
134
135 /* Update the media status. */
136 PHY_STATUS(sc);
137
138 /* Callback if something changed. */
139 mii_phy_update(sc, cmd);
140 return (0);
141 }
142
143 static void
inphy_status(struct mii_softc * sc)144 inphy_status(struct mii_softc *sc)
145 {
146 struct mii_data *mii = sc->mii_pdata;
147 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
148 int bmsr, bmcr, scr;
149
150 mii->mii_media_status = IFM_AVALID;
151 mii->mii_media_active = IFM_ETHER;
152
153 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
154 if (bmsr & BMSR_LINK)
155 mii->mii_media_status |= IFM_ACTIVE;
156
157 bmcr = PHY_READ(sc, MII_BMCR);
158 if (bmcr & BMCR_ISO) {
159 mii->mii_media_active |= IFM_NONE;
160 mii->mii_media_status = 0;
161 return;
162 }
163
164 if (bmcr & BMCR_LOOP)
165 mii->mii_media_active |= IFM_LOOP;
166
167 if (bmcr & BMCR_AUTOEN) {
168 if ((bmsr & BMSR_ACOMP) == 0) {
169 mii->mii_media_active |= IFM_NONE;
170 return;
171 }
172
173 scr = PHY_READ(sc, MII_INPHY_SCR);
174 if (scr & SCR_S100)
175 mii->mii_media_active |= IFM_100_TX;
176 else
177 mii->mii_media_active |= IFM_10_T;
178 if (scr & SCR_FDX)
179 mii->mii_media_active |=
180 IFM_FDX | mii_phy_flowstatus(sc);
181 else
182 mii->mii_media_active |= IFM_HDX;
183 } else
184 mii->mii_media_active = ife->ifm_media;
185 }
186
187 static void
inphy_reset(struct mii_softc * sc)188 inphy_reset(struct mii_softc *sc)
189 {
190
191 mii_phy_reset(sc);
192
193 /* Ensure Bay flow control is disabled. */
194 PHY_WRITE(sc, MII_INPHY_SCR,
195 PHY_READ(sc, MII_INPHY_SCR) & ~SCR_FLOWCTL);
196 }
197