1/* $NetBSD: inphy.c,v 1.55 2016/11/08 07:22:26 msaitoh Exp $ */
2
3/*-
4 * Copyright (c) 1998, 1999, 2000 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.
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 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33/*
34 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
55 */
56
57/*
58 * driver for Intel's i82555 ethernet 10/100 PHY
59 * Data Sheet available from www.intel.com
60 */
61
62#include <sys/cdefs.h>
63__KERNEL_RCSID(0, "$NetBSD: inphy.c,v 1.55 2016/11/08 07:22:26 msaitoh Exp $");
64
65#include <sys/param.h>
66#include <sys/systm.h>
67#include <sys/kernel.h>
68#include <sys/device.h>
69#include <sys/socket.h>
70#include <sys/errno.h>
71
72#include <net/if.h>
73#include <net/if_media.h>
74
75#include <dev/mii/mii.h>
76#include <dev/mii/miivar.h>
77#include <dev/mii/miidevs.h>
78
79#include <dev/mii/inphyreg.h>
80
81static int inphymatch(device_t, cfdata_t, void *);
82static void inphyattach(device_t, device_t, void *);
83
84CFATTACH_DECL_NEW(inphy, sizeof(struct mii_softc),
85 inphymatch, inphyattach, mii_phy_detach, mii_phy_activate);
86
87static int inphy_service(struct mii_softc *, struct mii_data *, int);
88static void inphy_status(struct mii_softc *);
89
90static const struct mii_phy_funcs inphy_funcs = {
91 inphy_service, inphy_status, mii_phy_reset,
92};
93
94static const struct mii_phydesc inphys[] = {
95 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82555,
96 MII_STR_yyINTEL_I82555 },
97
98 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EH,
99 MII_STR_yyINTEL_I82562EH },
100
101 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562EM,
102 MII_STR_yyINTEL_I82562EM },
103
104 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562ET,
105 MII_STR_yyINTEL_I82562ET },
106
107 { MII_OUI_yyINTEL, MII_MODEL_yyINTEL_I82562G,
108 MII_STR_yyINTEL_I82562G },
109
110 { 0, 0,
111 NULL },
112};
113
114static int
115inphymatch(device_t parent, cfdata_t match, void *aux)
116{
117 struct mii_attach_args *ma = aux;
118
119 if (mii_phy_match(ma, inphys) != NULL)
120 return (10);
121
122 return (0);
123}
124
125static void
126inphyattach(device_t parent, device_t self, void *aux)
127{
128 struct mii_softc *sc = device_private(self);
129 struct mii_attach_args *ma = aux;
130 struct mii_data *mii = ma->mii_data;
131 const struct mii_phydesc *mpd;
132
133 mpd = mii_phy_match(ma, inphys);
134 aprint_naive(": Media interface\n");
135 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
136
137 sc->mii_dev = self;
138 sc->mii_inst = mii->mii_instance;
139 sc->mii_phy = ma->mii_phyno;
140 sc->mii_mpd_oui = MII_OUI(ma->mii_id1, ma->mii_id2);
141 sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
142 sc->mii_mpd_rev = MII_REV(ma->mii_id2);
143 sc->mii_funcs = &inphy_funcs;
144 sc->mii_pdata = mii;
145 sc->mii_flags = ma->mii_flags;
146 sc->mii_anegticks = MII_ANEGTICKS;
147
148 PHY_RESET(sc);
149
150 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
151 aprint_normal_dev(self, "");
152 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
153 aprint_error("no media present");
154 else
155 mii_phy_add_media(sc);
156 aprint_normal("\n");
157}
158
159static int
160inphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
161{
162 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
163 int reg;
164
165 switch (cmd) {
166 case MII_POLLSTAT:
167 /*
168 * If we're not polling our PHY instance, just return.
169 */
170 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
171 return (0);
172 break;
173
174 case MII_MEDIACHG:
175 /*
176 * If the media indicates a different PHY instance,
177 * isolate ourselves.
178 */
179 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
180 reg = PHY_READ(sc, MII_BMCR);
181 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
182 return (0);
183 }
184
185 /*
186 * If the interface is not up, don't do anything.
187 */
188 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
189 break;
190
191 mii_phy_setmedia(sc);
192 break;
193
194 case MII_TICK:
195 /*
196 * If we're not currently selected, just return.
197 */
198 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
199 return (0);
200
201 if (mii_phy_tick(sc) == EJUSTRETURN)
202 return (0);
203 break;
204
205 case MII_DOWN:
206 mii_phy_down(sc);
207 return (0);
208 }
209
210 /* Update the media status. */
211 mii_phy_status(sc);
212
213 /* Callback if something changed. */
214 mii_phy_update(sc, cmd);
215 return (0);
216}
217
218static void
219inphy_status(struct mii_softc *sc)
220{
221 struct mii_data *mii = sc->mii_pdata;
222 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
223 int bmsr, bmcr, scr;
224
225 mii->mii_media_status = IFM_AVALID;
226 mii->mii_media_active = IFM_ETHER;
227
228 bmsr = PHY_READ(sc, MII_BMSR) |
229 PHY_READ(sc, MII_BMSR);
230 if (bmsr & BMSR_LINK)
231 mii->mii_media_status |= IFM_ACTIVE;
232
233 bmcr = PHY_READ(sc, MII_BMCR);
234 if (bmcr & BMCR_ISO) {
235 mii->mii_media_active |= IFM_NONE;
236 mii->mii_media_status = 0;
237 return;
238 }
239
240 if (bmcr & BMCR_LOOP)
241 mii->mii_media_active |= IFM_LOOP;
242
243 if (bmcr & BMCR_AUTOEN) {
244 if ((bmsr & BMSR_ACOMP) == 0) {
245 /* Erg, still trying, I guess... */
246 mii->mii_media_active |= IFM_NONE;
247 return;
248 }
249
250 scr = PHY_READ(sc, MII_INPHY_SCR);
251 if (scr & SCR_S100)
252 mii->mii_media_active |= IFM_100_TX;
253 else if ((bmsr & BMSR_100T4) && (scr & SCR_T4))
254 mii->mii_media_active |= IFM_100_T4;
255 else
256 mii->mii_media_active |= IFM_10_T;
257
258 if (scr & SCR_FDX)
259 mii->mii_media_active |= IFM_FDX;
260 else
261 mii->mii_media_active |= IFM_HDX;
262
263 if (mii->mii_media_active & IFM_FDX)
264 mii->mii_media_active |= mii_phy_flowstatus(sc);
265 } else
266 mii->mii_media_active = ife->ifm_media;
267}
268