1 /* $NetBSD: qsphy.c,v 1.55 2020/03/15 23:04:50 thorpej 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 Quality Semiconductor's QS6612 ethernet 10/100 PHY
59 * datasheet from www.qualitysemi.com
60 */
61
62 #include <sys/cdefs.h>
63 __KERNEL_RCSID(0, "$NetBSD: qsphy.c,v 1.55 2020/03/15 23:04:50 thorpej 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
71 #include <net/if.h>
72 #include <net/if_media.h>
73
74 #include <dev/mii/mii.h>
75 #include <dev/mii/miivar.h>
76 #include <dev/mii/miidevs.h>
77
78 #include <dev/mii/qsphyreg.h>
79
80 static int qsphymatch(device_t, cfdata_t, void *);
81 static void qsphyattach(device_t, device_t, void *);
82
83 CFATTACH_DECL_NEW(qsphy, sizeof(struct mii_softc),
84 qsphymatch, qsphyattach, mii_phy_detach, mii_phy_activate);
85
86 static int qsphy_service(struct mii_softc *, struct mii_data *, int);
87 static void qsphy_status(struct mii_softc *);
88 static void qsphy_reset(struct mii_softc *);
89
90 static const struct mii_phy_funcs qsphy_funcs = {
91 qsphy_service, qsphy_status, qsphy_reset,
92 };
93
94 static const struct mii_phydesc qsphys[] = {
95 MII_PHY_DESC(xxQUALSEMI, QS6612),
96 MII_PHY_END,
97 };
98
99 static int
qsphymatch(device_t parent,cfdata_t match,void * aux)100 qsphymatch(device_t parent, cfdata_t match, void *aux)
101 {
102 struct mii_attach_args *ma = aux;
103
104 if (mii_phy_match(ma, qsphys) != NULL)
105 return 10;
106
107 return 0;
108 }
109
110 static void
qsphyattach(device_t parent,device_t self,void * aux)111 qsphyattach(device_t parent, device_t self, void *aux)
112 {
113 struct mii_softc *sc = device_private(self);
114 struct mii_attach_args *ma = aux;
115 struct mii_data *mii = ma->mii_data;
116 const struct mii_phydesc *mpd;
117
118 mpd = mii_phy_match(ma, qsphys);
119 aprint_naive(": Media interface\n");
120 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
121
122 sc->mii_dev = self;
123 sc->mii_inst = mii->mii_instance;
124 sc->mii_phy = ma->mii_phyno;
125 sc->mii_funcs = &qsphy_funcs;
126 sc->mii_pdata = mii;
127 sc->mii_flags = ma->mii_flags;
128
129 mii_lock(mii);
130
131 PHY_RESET(sc);
132
133 PHY_READ(sc, MII_BMSR, &sc->mii_capabilities);
134 sc->mii_capabilities &= ma->mii_capmask;
135
136 mii_unlock(mii);
137
138 mii_phy_add_media(sc);
139 }
140
141 static 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 uint16_t reg;
146
147 KASSERT(mii_locked(mii));
148
149 switch (cmd) {
150 case MII_POLLSTAT:
151 /* If we're not polling our PHY instance, just return. */
152 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
153 return 0;
154 break;
155
156 case MII_MEDIACHG:
157 /*
158 * If the media indicates a different PHY instance,
159 * isolate ourselves.
160 */
161 if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
162 PHY_READ(sc, MII_BMCR, ®);
163 PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO);
164 return 0;
165 }
166
167 /* If the interface is not up, don't do anything. */
168 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
169 break;
170
171 mii_phy_setmedia(sc);
172 break;
173
174 case MII_TICK:
175 /* If we're not currently selected, just return. */
176 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
177 return 0;
178
179 if (mii_phy_tick(sc) == EJUSTRETURN)
180 return 0;
181 break;
182
183 case MII_DOWN:
184 mii_phy_down(sc);
185 return 0;
186 }
187
188 /* Update the media status. */
189 mii_phy_status(sc);
190
191 /* Callback if something changed. */
192 mii_phy_update(sc, cmd);
193 return 0;
194 }
195
196 static void
qsphy_status(struct mii_softc * sc)197 qsphy_status(struct mii_softc *sc)
198 {
199 struct mii_data *mii = sc->mii_pdata;
200 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
201 uint16_t bmsr, bmcr, pctl;
202
203 KASSERT(mii_locked(mii));
204
205 mii->mii_media_status = IFM_AVALID;
206 mii->mii_media_active = IFM_ETHER;
207
208 PHY_READ(sc, MII_BMSR, &bmsr);
209 PHY_READ(sc, MII_BMSR, &bmsr);
210 if (bmsr & BMSR_LINK)
211 mii->mii_media_status |= IFM_ACTIVE;
212
213 PHY_READ(sc, MII_BMCR, &bmcr);
214 if (bmcr & BMCR_ISO) {
215 mii->mii_media_active |= IFM_NONE;
216 mii->mii_media_status = 0;
217 return;
218 }
219
220 if (bmcr & BMCR_LOOP)
221 mii->mii_media_active |= IFM_LOOP;
222
223 if (bmcr & BMCR_AUTOEN) {
224 if ((bmsr & BMSR_ACOMP) == 0) {
225 /* Erg, still trying, I guess... */
226 mii->mii_media_active |= IFM_NONE;
227 return;
228 }
229 PHY_READ(sc, MII_QSPHY_PCTL, &pctl);
230 PHY_READ(sc, MII_QSPHY_PCTL, &pctl);
231 switch (pctl & PCTL_OPMASK) {
232 case PCTL_10_T:
233 mii->mii_media_active |= IFM_10_T | IFM_HDX;
234 break;
235 case PCTL_10_T_FDX:
236 mii->mii_media_active |= IFM_10_T | IFM_FDX;
237 break;
238 case PCTL_100_TX:
239 mii->mii_media_active |= IFM_100_TX | IFM_HDX;
240 break;
241 case PCTL_100_TX_FDX:
242 mii->mii_media_active |= IFM_100_TX | IFM_FDX;
243 break;
244 case PCTL_100_T4:
245 mii->mii_media_active |= IFM_100_T4 | IFM_HDX;
246 break;
247 default:
248 /* Erg... this shouldn't happen. */
249 mii->mii_media_active |= IFM_NONE;
250 break;
251 }
252 } else
253 mii->mii_media_active = ife->ifm_media;
254 }
255
256 static void
qsphy_reset(struct mii_softc * sc)257 qsphy_reset(struct mii_softc *sc)
258 {
259
260 KASSERT(mii_locked(sc->mii_pdata));
261
262 mii_phy_reset(sc);
263 PHY_WRITE(sc, MII_QSPHY_IMASK, 0);
264 }
265