1 /* $OpenBSD: urlphy.c,v 1.11 2005/05/27 08:04:15 brad Exp $ */
2 /* $NetBSD: urlphy.c,v 1.1 2002/03/28 21:07:53 ichiro Exp $ */
3 /*
4 * Copyright (c) 2001, 2002
5 * Shingo WATANABE <nabe@nabechan.org>. 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 /*
34 * driver for Realtek RL8150L internal phy
35 */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/device.h>
41 #include <sys/socket.h>
42
43 #include <net/if.h>
44 #include <net/if_media.h>
45
46 #include <dev/mii/mii.h>
47 #include <dev/mii/miivar.h>
48 #include <dev/mii/miidevs.h>
49 #include <dev/mii/urlphyreg.h>
50
51 #define URLPHY_DEBUG 0
52 #ifdef URLPHY_DEBUG
53 #define DPRINTF(x) if (urlphydebug) printf x
54 #define DPRINTFN(n,x) if (urlphydebug>(n)) printf x
55 int urlphydebug = URLPHY_DEBUG;
56 #else
57 #define DPRINTF(x)
58 #define DPRINTFN(n,x)
59 #endif
60
61 int urlphy_match(struct device *, void *, void *);
62 void urlphy_attach(struct device *, struct device *, void *);
63
64 struct cfattach urlphy_ca = {
65 sizeof(struct mii_softc), urlphy_match, urlphy_attach, mii_phy_detach,
66 mii_phy_activate
67 };
68
69 struct cfdriver urlphy_cd = {
70 NULL, "urlphy", DV_DULL
71 };
72
73 int urlphy_service(struct mii_softc *, struct mii_data *, int);
74 void urlphy_status(struct mii_softc *);
75
76 const struct mii_phy_funcs urlphy_funcs = {
77 urlphy_service, urlphy_status, mii_phy_reset,
78 };
79
80 int
urlphy_match(struct device * parent,void * match,void * aux)81 urlphy_match(struct device *parent, void *match, void *aux)
82 {
83 struct mii_attach_args *ma = aux;
84
85 /*
86 * RTL8150 reports OUT == 0, MODEL == 0
87 */
88 if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 &&
89 MII_MODEL(ma->mii_id2) != 0)
90 return (0);
91
92 /*
93 * Make sure the parent is an 'url' device.
94 */
95 if (strcmp(parent->dv_cfdata->cf_driver->cd_name, "url") != 0)
96 return (0);
97
98 return (10);
99 }
100
101 void
urlphy_attach(struct device * parent,struct device * self,void * aux)102 urlphy_attach(struct device *parent, struct device *self, void *aux)
103 {
104 struct mii_softc *sc = (struct mii_softc *)self;
105 struct mii_attach_args *ma = aux;
106 struct mii_data *mii = ma->mii_data;
107
108 printf(": RTL internal phy\n");
109
110 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
111
112 sc->mii_inst = mii->mii_instance;
113 sc->mii_phy = ma->mii_phyno;
114 sc->mii_funcs = &urlphy_funcs;
115 sc->mii_pdata = mii;
116 sc->mii_flags = ma->mii_flags;
117 sc->mii_anegticks = MII_ANEGTICKS_GIGE;
118
119 /* Don't do loopback on this PHY. */
120 sc->mii_flags |= MIIF_NOLOOP;
121 /* Don't do isolate on this PHY. */
122 sc->mii_flags |= MIIF_NOISOLATE;
123
124 if (mii->mii_instance != 0) {
125 printf("%s: ignoring this PHY, non-zero instance\n",
126 sc->mii_dev.dv_xname);
127 return;
128 }
129 PHY_RESET(sc);
130
131 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
132 if (sc->mii_capabilities & BMSR_MEDIAMASK)
133 mii_phy_add_media(sc);
134 }
135
136 int
urlphy_service(struct mii_softc * sc,struct mii_data * mii,int cmd)137 urlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
138 {
139 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
140 int reg;
141
142 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
143
144 if ((sc->mii_dev.dv_flags & DVF_ACTIVE) == 0)
145 return (ENXIO);
146
147 switch (cmd) {
148 case MII_POLLSTAT:
149 /*
150 * If we're not polling our PHY instance, just return.
151 */
152 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
153 return (0);
154 break;
155
156 case MII_MEDIACHG:
157 /*
158 * If we're not currently selected, just return.
159 */
160 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
161 return (0);
162
163 /* If the interface is not up, don't do anything. */
164 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
165 break;
166
167 mii_phy_setmedia(sc);
168 break;
169
170 case MII_TICK:
171 /*
172 * If we're not currently selected, just return.
173 */
174 if (IFM_INST(ife->ifm_media) != sc->mii_inst)
175 return (0);
176
177 /* Just bail now if the interface is down. */
178 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
179 return (0);
180
181 /*
182 * If we're not doing autonegotiation, we don't need to do
183 * any extra work here. However, we need to check the link
184 * status so we can generate an announcement if the status
185 * changes.
186 */
187 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO)
188 return (0);
189
190 /* Read the status register twice; MSR_LINK is latch-low. */
191 reg = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR);
192 if (reg & URLPHY_MSR_LINK)
193 return (0);
194
195 /*
196 * Only retry autonegotiation every mii_anegticks seconds.
197 */
198 if (++sc->mii_ticks <= sc->mii_anegticks)
199 return (0);
200
201 sc->mii_ticks = 0;
202 PHY_RESET(sc);
203
204 if (mii_phy_auto(sc, 0) == EJUSTRETURN)
205 return (0);
206
207 break;
208
209 case MII_DOWN:
210 mii_phy_down(sc);
211 return (0);
212 }
213
214 /* Update the media status. */
215 mii_phy_status(sc);
216
217 /* Callback if something changed. */
218 mii_phy_update(sc, cmd);
219
220 return (0);
221 }
222
223 void
urlphy_status(struct mii_softc * sc)224 urlphy_status(struct mii_softc *sc)
225 {
226 struct mii_data *mii = sc->mii_pdata;
227 struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
228 int msr, bmsr, bmcr;
229
230 DPRINTF(("%s: %s: enter\n", sc->mii_dev.dv_xname, __func__));
231
232 mii->mii_media_status = IFM_AVALID;
233 mii->mii_media_active = IFM_ETHER;
234
235 /*
236 * The link status bit is not exist in the BMSR register,
237 * so we need to read the MSR register to get link status.
238 */
239 msr = PHY_READ(sc, URLPHY_MSR) | PHY_READ(sc, URLPHY_MSR);
240 if (msr & URLPHY_MSR_LINK)
241 mii->mii_media_status |= IFM_ACTIVE;
242
243 DPRINTF(("%s: %s: link %s\n", sc->mii_dev.dv_xname, __func__,
244 mii->mii_media_status & IFM_ACTIVE ? "up" : "down"));
245
246 bmcr = PHY_READ(sc, MII_BMCR);
247 if (bmcr & BMCR_AUTOEN) {
248 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
249 if ((bmsr & BMSR_ACOMP) == 0) {
250 /* Erg, still trying, I guess... */
251 mii->mii_media_active |= IFM_NONE;
252 return;
253 }
254
255 if (msr & URLPHY_MSR_SPEED_100)
256 mii->mii_media_active |= IFM_100_TX;
257 else
258 mii->mii_media_active |= IFM_10_T;
259 if (msr & URLPHY_MSR_DUPLEX)
260 mii->mii_media_active |= IFM_FDX;
261 } else
262 mii->mii_media_active = ife->ifm_media;
263 }
264