1/*-
2 * Copyright (c) 2010, Pyun YongHyeon <yongari@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2010, Pyun YongHyeon <yongari@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
|
29__FBSDID("$FreeBSD: head/sys/dev/mii/rdcphy.c 221407 2011-05-03 19:51:29Z marius $");
| 29__FBSDID("$FreeBSD: head/sys/dev/mii/rdcphy.c 227848 2011-11-22 21:55:40Z marius $");
|
30
31/*
32 * Driver for the RDC Semiconductor R6040 10/100 PHY.
33 */
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/module.h>
39#include <sys/socket.h>
40#include <sys/bus.h>
41
42#include <net/if.h>
43#include <net/if_media.h>
44
45#include <dev/mii/mii.h>
46#include <dev/mii/miivar.h>
47#include "miidevs.h"
48
49#include <dev/mii/rdcphyreg.h>
50
51#include "miibus_if.h"
52
53static device_probe_t rdcphy_probe;
54static device_attach_t rdcphy_attach;
55
56struct rdcphy_softc {
57 struct mii_softc mii_sc;
58 int mii_link_tick;
59#define RDCPHY_MANNEG_TICK 3
60};
61
62static device_method_t rdcphy_methods[] = {
63 /* device interface */
64 DEVMETHOD(device_probe, rdcphy_probe),
65 DEVMETHOD(device_attach, rdcphy_attach),
66 DEVMETHOD(device_detach, mii_phy_detach),
67 DEVMETHOD(device_shutdown, bus_generic_shutdown),
| 30
31/*
32 * Driver for the RDC Semiconductor R6040 10/100 PHY.
33 */
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/module.h>
39#include <sys/socket.h>
40#include <sys/bus.h>
41
42#include <net/if.h>
43#include <net/if_media.h>
44
45#include <dev/mii/mii.h>
46#include <dev/mii/miivar.h>
47#include "miidevs.h"
48
49#include <dev/mii/rdcphyreg.h>
50
51#include "miibus_if.h"
52
53static device_probe_t rdcphy_probe;
54static device_attach_t rdcphy_attach;
55
56struct rdcphy_softc {
57 struct mii_softc mii_sc;
58 int mii_link_tick;
59#define RDCPHY_MANNEG_TICK 3
60};
61
62static device_method_t rdcphy_methods[] = {
63 /* device interface */
64 DEVMETHOD(device_probe, rdcphy_probe),
65 DEVMETHOD(device_attach, rdcphy_attach),
66 DEVMETHOD(device_detach, mii_phy_detach),
67 DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
68 KOBJMETHOD_END
| 68 DEVMETHOD_END
|
69};
70
71static devclass_t rdcphy_devclass;
72
73static driver_t rdcphy_driver = {
74 "rdcphy",
75 rdcphy_methods,
76 sizeof(struct rdcphy_softc)
77};
78
79DRIVER_MODULE(rdcphy, miibus, rdcphy_driver, rdcphy_devclass, 0, 0);
80
81static int rdcphy_service(struct mii_softc *, struct mii_data *, int);
82static void rdcphy_status(struct mii_softc *);
83
84static const struct mii_phydesc rdcphys[] = {
85 MII_PHY_DESC(RDC, R6040),
86 MII_PHY_END
87};
88
89static const struct mii_phy_funcs rdcphy_funcs = {
90 rdcphy_service,
91 rdcphy_status,
92 mii_phy_reset
93};
94
95static int
96rdcphy_probe(device_t dev)
97{
98
99 return (mii_phy_dev_probe(dev, rdcphys, BUS_PROBE_DEFAULT));
100}
101
102static int
103rdcphy_attach(device_t dev)
104{
105
106 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &rdcphy_funcs, 1);
107 return (0);
108}
109
110static int
111rdcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
112{
113 struct rdcphy_softc *rsc;
114 struct ifmedia_entry *ife;
115
116 rsc = (struct rdcphy_softc *)sc;
117 ife = mii->mii_media.ifm_cur;
118
119 switch (cmd) {
120 case MII_POLLSTAT:
121 break;
122
123 case MII_MEDIACHG:
124 /*
125 * If the interface is not up, don't do anything.
126 */
127 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
128 break;
129
130 mii_phy_setmedia(sc);
131 switch (IFM_SUBTYPE(ife->ifm_media)) {
132 case IFM_100_TX:
133 case IFM_10_T:
134 /*
135 * Report fake lost link event to parent
136 * driver. This will stop MAC of parent
137 * driver and make it possible to reconfigure
138 * MAC after completion of link establishment.
139 * Note, the parent MAC seems to require
140 * restarting MAC when underlying any PHY
141 * configuration was changed even if the
142 * resolved speed/duplex was not changed at
143 * all.
144 */
145 mii->mii_media_status = 0;
146 mii->mii_media_active = IFM_ETHER | IFM_NONE;
147 rsc->mii_link_tick = RDCPHY_MANNEG_TICK;
148 /* Immediately report link down. */
149 mii_phy_update(sc, MII_MEDIACHG);
150 return (0);
151 default:
152 break;
153 }
154 break;
155
156 case MII_TICK:
157 if (mii_phy_tick(sc) == EJUSTRETURN)
158 return (0);
159 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
160 /*
161 * It seems the PHY hardware does not correctly
162 * report link status changes when manual link
163 * configuration is in progress. It is also
164 * possible for the PHY to complete establishing
165 * a link within one second such that mii(4)
166 * did not notice the link change. To workaround
167 * the issue, emulate lost link event and wait
168 * for 3 seconds when manual link configuration
169 * is in progress. 3 seconds would be long
170 * enough to absorb transient link flips.
171 */
172 if (rsc->mii_link_tick > 0) {
173 rsc->mii_link_tick--;
174 return (0);
175 }
176 }
177 break;
178 }
179
180 /* Update the media status. */
181 PHY_STATUS(sc);
182
183 /* Callback if something changed. */
184 mii_phy_update(sc, cmd);
185 return (0);
186}
187
188static void
189rdcphy_status(struct mii_softc *sc)
190{
191 struct mii_data *mii;
192 struct ifmedia_entry *ife;
193 int bmsr, bmcr, physts;
194
195 mii = sc->mii_pdata;
196 ife = mii->mii_media.ifm_cur;
197
198 mii->mii_media_status = IFM_AVALID;
199 mii->mii_media_active = IFM_ETHER;
200
201 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
202 physts = PHY_READ(sc, MII_RDCPHY_STATUS);
203
204 if ((physts & STATUS_LINK_UP) != 0)
205 mii->mii_media_status |= IFM_ACTIVE;
206
207 bmcr = PHY_READ(sc, MII_BMCR);
208 if ((bmcr & BMCR_ISO) != 0) {
209 mii->mii_media_active |= IFM_NONE;
210 mii->mii_media_status = 0;
211 return;
212 }
213
214 if ((bmcr & BMCR_LOOP) != 0)
215 mii->mii_media_active |= IFM_LOOP;
216
217 if ((bmcr & BMCR_AUTOEN) != 0) {
218 if ((bmsr & BMSR_ACOMP) == 0) {
219 /* Erg, still trying, I guess... */
220 mii->mii_media_active |= IFM_NONE;
221 return;
222 }
223 }
224
225 switch (physts & STATUS_SPEED_MASK) {
226 case STATUS_SPEED_100:
227 mii->mii_media_active |= IFM_100_TX;
228 break;
229 case STATUS_SPEED_10:
230 mii->mii_media_active |= IFM_10_T;
231 break;
232 default:
233 mii->mii_media_active |= IFM_NONE;
234 return;
235 }
236 if ((physts & STATUS_FULL_DUPLEX) != 0)
237 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
238 else
239 mii->mii_media_active |= IFM_HDX;
240}
| 69};
70
71static devclass_t rdcphy_devclass;
72
73static driver_t rdcphy_driver = {
74 "rdcphy",
75 rdcphy_methods,
76 sizeof(struct rdcphy_softc)
77};
78
79DRIVER_MODULE(rdcphy, miibus, rdcphy_driver, rdcphy_devclass, 0, 0);
80
81static int rdcphy_service(struct mii_softc *, struct mii_data *, int);
82static void rdcphy_status(struct mii_softc *);
83
84static const struct mii_phydesc rdcphys[] = {
85 MII_PHY_DESC(RDC, R6040),
86 MII_PHY_END
87};
88
89static const struct mii_phy_funcs rdcphy_funcs = {
90 rdcphy_service,
91 rdcphy_status,
92 mii_phy_reset
93};
94
95static int
96rdcphy_probe(device_t dev)
97{
98
99 return (mii_phy_dev_probe(dev, rdcphys, BUS_PROBE_DEFAULT));
100}
101
102static int
103rdcphy_attach(device_t dev)
104{
105
106 mii_phy_dev_attach(dev, MIIF_NOMANPAUSE, &rdcphy_funcs, 1);
107 return (0);
108}
109
110static int
111rdcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
112{
113 struct rdcphy_softc *rsc;
114 struct ifmedia_entry *ife;
115
116 rsc = (struct rdcphy_softc *)sc;
117 ife = mii->mii_media.ifm_cur;
118
119 switch (cmd) {
120 case MII_POLLSTAT:
121 break;
122
123 case MII_MEDIACHG:
124 /*
125 * If the interface is not up, don't do anything.
126 */
127 if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
128 break;
129
130 mii_phy_setmedia(sc);
131 switch (IFM_SUBTYPE(ife->ifm_media)) {
132 case IFM_100_TX:
133 case IFM_10_T:
134 /*
135 * Report fake lost link event to parent
136 * driver. This will stop MAC of parent
137 * driver and make it possible to reconfigure
138 * MAC after completion of link establishment.
139 * Note, the parent MAC seems to require
140 * restarting MAC when underlying any PHY
141 * configuration was changed even if the
142 * resolved speed/duplex was not changed at
143 * all.
144 */
145 mii->mii_media_status = 0;
146 mii->mii_media_active = IFM_ETHER | IFM_NONE;
147 rsc->mii_link_tick = RDCPHY_MANNEG_TICK;
148 /* Immediately report link down. */
149 mii_phy_update(sc, MII_MEDIACHG);
150 return (0);
151 default:
152 break;
153 }
154 break;
155
156 case MII_TICK:
157 if (mii_phy_tick(sc) == EJUSTRETURN)
158 return (0);
159 if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
160 /*
161 * It seems the PHY hardware does not correctly
162 * report link status changes when manual link
163 * configuration is in progress. It is also
164 * possible for the PHY to complete establishing
165 * a link within one second such that mii(4)
166 * did not notice the link change. To workaround
167 * the issue, emulate lost link event and wait
168 * for 3 seconds when manual link configuration
169 * is in progress. 3 seconds would be long
170 * enough to absorb transient link flips.
171 */
172 if (rsc->mii_link_tick > 0) {
173 rsc->mii_link_tick--;
174 return (0);
175 }
176 }
177 break;
178 }
179
180 /* Update the media status. */
181 PHY_STATUS(sc);
182
183 /* Callback if something changed. */
184 mii_phy_update(sc, cmd);
185 return (0);
186}
187
188static void
189rdcphy_status(struct mii_softc *sc)
190{
191 struct mii_data *mii;
192 struct ifmedia_entry *ife;
193 int bmsr, bmcr, physts;
194
195 mii = sc->mii_pdata;
196 ife = mii->mii_media.ifm_cur;
197
198 mii->mii_media_status = IFM_AVALID;
199 mii->mii_media_active = IFM_ETHER;
200
201 bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
202 physts = PHY_READ(sc, MII_RDCPHY_STATUS);
203
204 if ((physts & STATUS_LINK_UP) != 0)
205 mii->mii_media_status |= IFM_ACTIVE;
206
207 bmcr = PHY_READ(sc, MII_BMCR);
208 if ((bmcr & BMCR_ISO) != 0) {
209 mii->mii_media_active |= IFM_NONE;
210 mii->mii_media_status = 0;
211 return;
212 }
213
214 if ((bmcr & BMCR_LOOP) != 0)
215 mii->mii_media_active |= IFM_LOOP;
216
217 if ((bmcr & BMCR_AUTOEN) != 0) {
218 if ((bmsr & BMSR_ACOMP) == 0) {
219 /* Erg, still trying, I guess... */
220 mii->mii_media_active |= IFM_NONE;
221 return;
222 }
223 }
224
225 switch (physts & STATUS_SPEED_MASK) {
226 case STATUS_SPEED_100:
227 mii->mii_media_active |= IFM_100_TX;
228 break;
229 case STATUS_SPEED_10:
230 mii->mii_media_active |= IFM_10_T;
231 break;
232 default:
233 mii->mii_media_active |= IFM_NONE;
234 return;
235 }
236 if ((physts & STATUS_FULL_DUPLEX) != 0)
237 mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
238 else
239 mii->mii_media_active |= IFM_HDX;
240}
|