1 | /* $NetBSD: rlphy.c,v 1.30 2016/07/07 06:55:41 msaitoh Exp $ */ |
2 | /* $OpenBSD: rlphy.c,v 1.20 2005/07/31 05:27:30 pvalchev Exp $ */ |
3 | |
4 | /* |
5 | * Copyright (c) 1998, 1999 Jason L. Wright (jason@thought.net) |
6 | * All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions |
10 | * are met: |
11 | * 1. Redistributions of source code must retain the above copyright |
12 | * notice, this list of conditions and the following disclaimer. |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
14 | * notice, this list of conditions and the following disclaimer in the |
15 | * documentation and/or other materials provided with the distribution. |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
20 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
21 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
22 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
25 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
26 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
27 | * POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
29 | |
30 | /* |
31 | * Driver for the internal PHY found on RTL8139 based nics, based |
32 | * on drivers for the 'exphy' (Internal 3Com phys) and 'nsphy' |
33 | * (National Semiconductor DP83840). |
34 | */ |
35 | |
36 | /* |
37 | * Ported to NetBSD by Juan Romero Pardines <xtraeme@NetBSD.org> |
38 | */ |
39 | |
40 | #include <sys/cdefs.h> |
41 | __KERNEL_RCSID(0, "$NetBSD: rlphy.c,v 1.30 2016/07/07 06:55:41 msaitoh Exp $" ); |
42 | |
43 | #include <sys/param.h> |
44 | #include <sys/systm.h> |
45 | #include <sys/kernel.h> |
46 | #include <sys/device.h> |
47 | #include <sys/socket.h> |
48 | #include <sys/errno.h> |
49 | |
50 | #include <net/if.h> |
51 | #include <net/if_media.h> |
52 | |
53 | #include <dev/mii/mii.h> |
54 | #include <dev/mii/miivar.h> |
55 | #include <dev/mii/miidevs.h> |
56 | #include <sys/bus.h> |
57 | #include <dev/ic/rtl81x9reg.h> |
58 | |
59 | struct rlphy_softc { |
60 | struct mii_softc sc_mii; |
61 | int sc_rtl8201l; |
62 | }; |
63 | |
64 | int rlphymatch(device_t, cfdata_t, void *); |
65 | void rlphyattach(device_t, device_t, void *); |
66 | |
67 | CFATTACH_DECL_NEW(rlphy, sizeof(struct rlphy_softc), |
68 | rlphymatch, rlphyattach, mii_phy_detach, mii_phy_activate); |
69 | |
70 | int rlphy_service(struct mii_softc *, struct mii_data *, int); |
71 | void rlphy_status(struct mii_softc *); |
72 | |
73 | static void rlphy_reset(struct mii_softc *); |
74 | |
75 | const struct mii_phy_funcs rlphy_funcs = { |
76 | rlphy_service, rlphy_status, rlphy_reset, |
77 | }; |
78 | |
79 | static const struct mii_phydesc rlphys[] = { |
80 | { MII_OUI_yyREALTEK, MII_MODEL_yyREALTEK_RTL8201L, |
81 | MII_STR_yyREALTEK_RTL8201L }, |
82 | { MII_OUI_ICPLUS, MII_MODEL_ICPLUS_IP101, |
83 | MII_STR_ICPLUS_IP101 }, |
84 | |
85 | { 0, 0, |
86 | NULL }, |
87 | }; |
88 | |
89 | int |
90 | rlphymatch(device_t parent, cfdata_t match, void *aux) |
91 | { |
92 | struct mii_attach_args *ma = aux; |
93 | struct mii_data *mii = ma->mii_data; |
94 | |
95 | if (mii->mii_instance != 0) |
96 | return 0; |
97 | |
98 | if (mii_phy_match(ma, rlphys) != NULL) |
99 | return (10); |
100 | |
101 | if (MII_OUI(ma->mii_id1, ma->mii_id2) != 0 || |
102 | MII_MODEL(ma->mii_id2) != 0) |
103 | return 0; |
104 | |
105 | if (!device_is_a(parent, "rtk" ) && !device_is_a(parent, "re" )) |
106 | return 0; |
107 | |
108 | /* |
109 | * A "real" phy should get preference, but on the 8139 there |
110 | * is no phyid register. |
111 | */ |
112 | return 5; |
113 | } |
114 | |
115 | void |
116 | rlphyattach(device_t parent, device_t self, void *aux) |
117 | { |
118 | struct rlphy_softc *rsc = device_private(self); |
119 | struct mii_softc *sc = &rsc->sc_mii; |
120 | struct mii_attach_args *ma = aux; |
121 | struct mii_data *mii = ma->mii_data; |
122 | |
123 | aprint_naive("\n" ); |
124 | if (MII_MODEL(ma->mii_id2) == MII_MODEL_yyREALTEK_RTL8201L) { |
125 | rsc->sc_rtl8201l = 1; |
126 | aprint_normal(": %s, rev. %d\n" , MII_STR_yyREALTEK_RTL8201L, |
127 | MII_REV(ma->mii_id2)); |
128 | } else |
129 | aprint_normal(": Realtek internal PHY\n" ); |
130 | |
131 | sc->mii_dev = self; |
132 | sc->mii_inst = mii->mii_instance; |
133 | sc->mii_phy = ma->mii_phyno; |
134 | sc->mii_funcs = &rlphy_funcs; |
135 | sc->mii_pdata = mii; |
136 | sc->mii_flags = ma->mii_flags; |
137 | |
138 | sc->mii_flags |= MIIF_NOISOLATE; |
139 | |
140 | PHY_RESET(sc); |
141 | |
142 | aprint_normal_dev(self, "" ); |
143 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
144 | if (sc->mii_capabilities & BMSR_MEDIAMASK) |
145 | mii_phy_add_media(sc); |
146 | aprint_normal("\n" ); |
147 | } |
148 | |
149 | int |
150 | rlphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
151 | { |
152 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
153 | |
154 | /* |
155 | * Can't isolate the RTL8139 phy, so it has to be the only one. |
156 | */ |
157 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
158 | panic("rlphy_service: attempt to isolate phy" ); |
159 | |
160 | switch (cmd) { |
161 | case MII_POLLSTAT: |
162 | break; |
163 | |
164 | case MII_MEDIACHG: |
165 | /* |
166 | * If the interface is not up, don't do anything. |
167 | */ |
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 | /* |
176 | * Is the interface even up? |
177 | */ |
178 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
179 | return (0); |
180 | |
181 | /* |
182 | * Only used for autonegotiation. |
183 | */ |
184 | if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) |
185 | break; |
186 | |
187 | /* |
188 | * The RealTek PHY's autonegotiation doesn't need to be |
189 | * kicked; it continues in the background. |
190 | */ |
191 | break; |
192 | |
193 | case MII_DOWN: |
194 | mii_phy_down(sc); |
195 | return (0); |
196 | } |
197 | |
198 | /* Update the media status. */ |
199 | mii_phy_status(sc); |
200 | |
201 | /* Callback if something changed. */ |
202 | mii_phy_update(sc, cmd); |
203 | return (0); |
204 | } |
205 | |
206 | void |
207 | rlphy_status(struct mii_softc *sc) |
208 | { |
209 | struct rlphy_softc *rsc = (void *)sc; |
210 | struct mii_data *mii = sc->mii_pdata; |
211 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
212 | int bmsr, bmcr, anlpar; |
213 | |
214 | mii->mii_media_status = IFM_AVALID; |
215 | mii->mii_media_active = IFM_ETHER; |
216 | |
217 | bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); |
218 | if (bmsr & BMSR_LINK) |
219 | mii->mii_media_status |= IFM_ACTIVE; |
220 | |
221 | bmcr = PHY_READ(sc, MII_BMCR); |
222 | if (bmcr & BMCR_ISO) { |
223 | mii->mii_media_active |= IFM_NONE; |
224 | mii->mii_media_status = 0; |
225 | return; |
226 | } |
227 | |
228 | if (bmcr & BMCR_LOOP) |
229 | mii->mii_media_active |= IFM_LOOP; |
230 | |
231 | if (bmcr & BMCR_AUTOEN) { |
232 | /* |
233 | * NWay autonegotiation takes the highest-order common |
234 | * bit of the ANAR and ANLPAR (i.e. best media advertised |
235 | * both by us and our link partner). |
236 | */ |
237 | if ((bmsr & BMSR_ACOMP) == 0) { |
238 | /* Erg, still trying, I guess... */ |
239 | mii->mii_media_active |= IFM_NONE; |
240 | return; |
241 | } |
242 | |
243 | if ((anlpar = PHY_READ(sc, MII_ANAR) & |
244 | PHY_READ(sc, MII_ANLPAR))) { |
245 | if (anlpar & ANLPAR_TX_FD) |
246 | mii->mii_media_active |= IFM_100_TX|IFM_FDX; |
247 | else if (anlpar & ANLPAR_T4) |
248 | mii->mii_media_active |= IFM_100_T4|IFM_HDX; |
249 | else if (anlpar & ANLPAR_TX) |
250 | mii->mii_media_active |= IFM_100_TX|IFM_HDX; |
251 | else if (anlpar & ANLPAR_10_FD) |
252 | mii->mii_media_active |= IFM_10_T|IFM_FDX; |
253 | else if (anlpar & ANLPAR_10) |
254 | mii->mii_media_active |= IFM_10_T|IFM_HDX; |
255 | else |
256 | mii->mii_media_active |= IFM_NONE; |
257 | return; |
258 | } |
259 | |
260 | /* |
261 | * If the other side doesn't support NWAY, then the |
262 | * best we can do is determine if we have a 10Mbps or |
263 | * 100Mbps link. There's no way to know if the link |
264 | * is full or half duplex, so we default to half duplex |
265 | * and hope that the user is clever enough to manually |
266 | * change the media settings if we're wrong. |
267 | */ |
268 | |
269 | /* |
270 | * The RealTek PHY supports non-NWAY link speed |
271 | * detection, however it does not report the link |
272 | * detection results via the ANLPAR or BMSR registers. |
273 | * (What? RealTek doesn't do things the way everyone |
274 | * else does? I'm just shocked, shocked I tell you.) |
275 | * To determine the link speed, we have to do one |
276 | * of two things: |
277 | * |
278 | * - If this is a standalone RealTek RTL8201(L) PHY, |
279 | * we can determine the link speed by testing bit 0 |
280 | * in the magic, vendor-specific register at offset |
281 | * 0x19. |
282 | * |
283 | * - If this is a RealTek MAC with integrated PHY, we |
284 | * can test the 'SPEED10' bit of the MAC's media status |
285 | * register. |
286 | */ |
287 | if (rsc->sc_rtl8201l) { |
288 | if (PHY_READ(sc, 0x0019) & 0x01) |
289 | mii->mii_media_active |= IFM_100_TX; |
290 | else |
291 | mii->mii_media_active |= IFM_10_T; |
292 | } else { |
293 | if (PHY_READ(sc, RTK_MEDIASTAT) & RTK_MEDIASTAT_SPEED10) |
294 | mii->mii_media_active |= IFM_10_T; |
295 | else |
296 | mii->mii_media_active |= IFM_100_TX; |
297 | } |
298 | mii->mii_media_active |= IFM_HDX; |
299 | } else |
300 | mii->mii_media_active = ife->ifm_media; |
301 | } |
302 | |
303 | static void |
304 | rlphy_reset(struct mii_softc *sc) |
305 | { |
306 | |
307 | mii_phy_reset(sc); |
308 | |
309 | /* |
310 | * XXX RealTek PHY doesn't set the BMCR properly after |
311 | * XXX reset, which breaks autonegotiation. |
312 | */ |
313 | PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN); |
314 | } |
315 | |