1 /* $OpenBSD: qsphy.c,v 1.22 2022/04/06 18:59:29 naddy Exp $ */
2 /* $NetBSD: qsphy.c,v 1.19 2000/02/02 23:34:57 thorpej Exp $ */
3
4 /*-
5 * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 /*
35 * Copyright (c) 1997 Manuel Bouyer. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56 */
57
58 /*
59 * driver for Quality Semiconductor's QS6612 ethernet 10/100 PHY
60 * datasheet from www.qualitysemi.com
61 */
62
63 #include <sys/param.h>
64 #include <sys/systm.h>
65 #include <sys/device.h>
66 #include <sys/socket.h>
67
68 #include <net/if.h>
69 #include <net/if_var.h>
70 #include <net/if_media.h>
71
72 #include <dev/mii/mii.h>
73 #include <dev/mii/miivar.h>
74 #include <dev/mii/miidevs.h>
75
76 #include <dev/mii/qsphyreg.h>
77
78 int qsphymatch(struct device *, void *, void *);
79 void qsphyattach(struct device *, struct device *, void *);
80
81 const struct cfattach qsphy_ca = {
82 sizeof(struct mii_softc), qsphymatch, qsphyattach, mii_phy_detach
83 };
84
85 struct cfdriver qsphy_cd = {
86 NULL, "qsphy", DV_DULL
87 };
88
89 int qsphy_service(struct mii_softc *, struct mii_data *, int);
90 void qsphy_reset(struct mii_softc *);
91 void qsphy_status(struct mii_softc *);
92
93 const struct mii_phy_funcs qsphy_funcs = {
94 qsphy_service, qsphy_status, qsphy_reset,
95 };
96
97 static const struct mii_phydesc qsphys[] = {
98 { MII_OUI_QUALITYSEMI, MII_MODEL_QUALITYSEMI_QS6612,
99 MII_STR_QUALITYSEMI_QS6612 },
100
101 { 0, 0,
102 NULL },
103 };
104
105 int
qsphymatch(struct device * parent,void * match,void * aux)106 qsphymatch(struct device *parent, void *match, void *aux)
107 {
108 struct mii_attach_args *ma = aux;
109
110 if (mii_phy_match(ma, qsphys) != NULL)
111 return (10);
112
113 return (0);
114 }
115
116 void
qsphyattach(struct device * parent,struct device * self,void * aux)117 qsphyattach(struct device *parent, struct device *self, void *aux)
118 {
119 struct mii_softc *sc = (struct mii_softc *)self;
120 struct mii_attach_args *ma = aux;
121 struct mii_data *mii = ma->mii_data;
122 const struct mii_phydesc *mpd;
123
124 mpd = mii_phy_match(ma, qsphys);
125 printf(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
126
127 sc->mii_inst = mii->mii_instance;
128 sc->mii_phy = ma->mii_phyno;
129 sc->mii_funcs = &qsphy_funcs;
130 sc->mii_pdata = mii;
131 sc->mii_flags = ma->mii_flags;
132
133 PHY_RESET(sc);
134
135 sc->mii_capabilities =
136 PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
137 if (sc->mii_capabilities & BMSR_MEDIAMASK)
138 mii_phy_add_media(sc);
139 }
140
141 int
qsphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)142 qsphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
143 {
144 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
145 int reg;
146
147 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
148 return (ENXIO);
149
150 switch (cmd) {
151 case MII_POLLSTAT:
152 /*
153 * If we're not polling our PHY instance, just return.
154 */
155 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
156 return (0);
157 break;
158
159 case MII_MEDIACHG:
160 /*
161 * If the media indicates a different PHY instance,
162 * isolate ourselves.
163 */
164 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
165 reg = PHY_READ(sc, MII_BMCR);
166 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
167 return (0);
168 }
169
170 /*
171 * If the interface is not up, don't do anything.
172 */
173 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
174 break;
175
176 mii_phy_setmedia(sc);
177 break;
178
179 case MII_TICK:
180 /*
181 * If we're not currently selected, just return.
182 */
183 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
184 return (0);
185
186 if (mii_phy_tick(sc) == EJUSTRETURN)
187 return (0);
188 break;
189
190 case MII_DOWN:
191 mii_phy_down(sc);
192 return (0);
193 }
194
195 /* Update the media status. */
196 mii_phy_status(sc);
197
198 /* Callback if something changed. */
199 mii_phy_update(sc, cmd);
200 return (0);
201 }
202
203 void
qsphy_status(struct mii_softc * sc)204 qsphy_status(struct mii_softc *sc)
205 {
206 struct mii_data *mii = sc->mii_pdata;
207 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
208 int bmsr, bmcr, pctl;
209
210 mii->mii_media_status = IFM_AVALID;
211 mii->mii_media_active = IFM_ETHER;
212
213 bmsr = PHY_READ(sc, MII_BMSR) |
214 PHY_READ(sc, MII_BMSR);
215 if (bmsr & BMSR_LINK)
216 mii->mii_media_status |= IFM_ACTIVE;
217
218 bmcr = PHY_READ(sc, MII_BMCR);
219 if (bmcr & BMCR_ISO) {
220 mii->mii_media_active |= IFM_NONE;
221 mii->mii_media_status = 0;
222 return;
223 }
224
225 if (bmcr & BMCR_LOOP)
226 mii->mii_media_active |= IFM_LOOP;
227
228 if (bmcr & BMCR_AUTOEN) {
229 if ((bmsr & BMSR_ACOMP) == 0) {
230 /* Erg, still trying, I guess... */
231 mii->mii_media_active |= IFM_NONE;
232 return;
233 }
234 pctl = PHY_READ(sc, MII_QSPHY_PCTL) |
235 PHY_READ(sc, MII_QSPHY_PCTL);
236 switch (pctl & PCTL_OPMASK) {
237 case PCTL_10_T:
238 mii->mii_media_active |= IFM_10_T|IFM_HDX;
239 break;
240 case PCTL_10_T_FDX:
241 mii->mii_media_active |= IFM_10_T|IFM_FDX;
242 break;
243 case PCTL_100_TX:
244 mii->mii_media_active |= IFM_100_TX|IFM_HDX;
245 break;
246 case PCTL_100_TX_FDX:
247 mii->mii_media_active |= IFM_100_TX|IFM_FDX;
248 break;
249 case PCTL_100_T4:
250 mii->mii_media_active |= IFM_100_T4|IFM_HDX;
251 break;
252 default:
253 /* Erg... this shouldn't happen. */
254 mii->mii_media_active |= IFM_NONE;
255 break;
256 }
257 } else
258 mii->mii_media_active = ife->ifm_media;
259 }
260
261 void
qsphy_reset(struct mii_softc * sc)262 qsphy_reset(struct mii_softc *sc)
263 {
264 mii_phy_reset(sc);
265 PHY_WRITE(sc, MII_QSPHY_IMASK, 0);
266 }
267