1/*-
2 * Copyright (c) 2006 Benno Rice. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

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18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include <sys/cdefs.h>
26__FBSDID("$FreeBSD: head/sys/dev/mii/smcphy.c 221407 2011-05-03 19:51:29Z marius $");
27
28/*
29 * Driver for the internal PHY on the SMSC LAN91C111.
30 */
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/kernel.h>

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48#include "miidevs.h"
49
50#include "miibus_if.h"
51
52static int smcphy_probe(device_t);
53static int smcphy_attach(device_t);
54
55static int smcphy_service(struct mii_softc *, struct mii_data *, int);
56static void smcphy_reset(struct mii_softc *);
57static void smcphy_auto(struct mii_softc *, int);
58
59static device_method_t smcphy_methods[] = {
60 /* device interface */
61 DEVMETHOD(device_probe, smcphy_probe),
62 DEVMETHOD(device_attach, smcphy_attach),
63 DEVMETHOD(device_detach, mii_phy_detach),
64 DEVMETHOD(device_shutdown, bus_generic_shutdown),

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72 "smcphy",
73 smcphy_methods,
74 sizeof(struct mii_softc)
75};
76
77DRIVER_MODULE(smcphy, miibus, smcphy_driver, smcphy_devclass, 0, 0);
78
79static const struct mii_phydesc smcphys[] = {
80 MII_PHY_DESC(SEEQ, 84220),
81 MII_PHY_END
82};
83
84static const struct mii_phy_funcs smcphy_funcs = {
85 smcphy_service,
86 ukphy_status,
87 smcphy_reset
88};
89
90static int
91smcphy_probe(device_t dev)
92{
93
94 return (mii_phy_dev_probe(dev, smcphys, BUS_PROBE_DEFAULT));
95}
96
97static int
98smcphy_attach(device_t dev)
99{
100 struct mii_softc *sc;
101
102 sc = device_get_softc(dev);
103
104 mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
105 &smcphy_funcs, 1);
106 mii_phy_setmedia(sc);
107
108 return (0);
109}
110
111static int
112smcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
113{

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160 break;
161 }
162
163 if (++sc->mii_ticks <= MII_ANEGTICKS) {
164 break;
165 }
166
167 sc->mii_ticks = 0;
168 PHY_RESET(sc);
169 smcphy_auto(sc, ife->ifm_media);
170 break;
171 }
172
173 /* Update the media status. */
174 PHY_STATUS(sc);
175
176 /* Callback if something changed. */
177 mii_phy_update(sc, cmd);
178 return (0);
179}
180
181static void
182smcphy_reset(struct mii_softc *sc)
183{
184 u_int bmcr;
185 int timeout;
186
187 PHY_WRITE(sc, MII_BMCR, BMCR_RESET);
188
189 for (timeout = 2; timeout > 0; timeout--) {
190 DELAY(50000);
191 bmcr = PHY_READ(sc, MII_BMCR);
192 if ((bmcr & BMCR_RESET) == 0)
193 break;
194 }
195
196 if (bmcr & BMCR_RESET)
197 device_printf(sc->mii_dev, "reset failed\n");
198
199 PHY_WRITE(sc, MII_BMCR, 0x3000);
200
201 /* Mask interrupts, we poll instead. */
202 PHY_WRITE(sc, 0x1e, 0xffc0);
203}
204
205static void
206smcphy_auto(struct mii_softc *sc, int media)
207{
208 uint16_t anar;
209
210 anar = BMSR_MEDIA_TO_ANAR(sc->mii_capabilities) |
211 ANAR_CSMA;
212 if ((media & IFM_FLOW) != 0 || (sc->mii_flags & MIIF_FORCEPAUSE) != 0)
213 anar |= ANAR_FC;
214 PHY_WRITE(sc, MII_ANAR, anar);
215 /* Apparently this helps. */
216 anar = PHY_READ(sc, MII_ANAR);
217 PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG);
218}