1/*
2 * Copyright (c) 1997, 1998, 1999
3 *	Bill Paul <wpaul@ee.columbia.edu>.  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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD$");
35
36/*
37 * Pseudo-driver for media selection on the Lite-On PNIC 82c168
38 * chip.  The NWAY support on this chip is horribly broken, so we
39 * only support manual mode selection.  This is lame, but getting
40 * NWAY to work right is amazingly difficult.
41 */
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/kernel.h>
46#include <sys/socket.h>
47#include <sys/errno.h>
48#include <sys/lock.h>
49#include <sys/module.h>
50#include <sys/mutex.h>
51#include <sys/bus.h>
52
53#include <net/if.h>
54#include <net/if_var.h>
55#include <net/if_arp.h>
56#include <net/if_media.h>
57
58#include <dev/mii/mii.h>
59#include <dev/mii/miivar.h>
60#include "miidevs.h"
61
62#include <machine/bus.h>
63#include <machine/resource.h>
64
65#include <dev/dc/if_dcreg.h>
66
67#include "miibus_if.h"
68
69static int pnphy_probe(device_t);
70static int pnphy_attach(device_t);
71
72static device_method_t pnphy_methods[] = {
73	/* device interface */
74	DEVMETHOD(device_probe,		pnphy_probe),
75	DEVMETHOD(device_attach,	pnphy_attach),
76	DEVMETHOD(device_detach,	mii_phy_detach),
77	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
78	DEVMETHOD_END
79};
80
81static devclass_t pnphy_devclass;
82
83static driver_t pnphy_driver = {
84	"pnphy",
85	pnphy_methods,
86	sizeof(struct mii_softc)
87};
88
89DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0);
90
91static int	pnphy_service(struct mii_softc *, struct mii_data *, int);
92static void	pnphy_status(struct mii_softc *);
93static void	pnphy_reset(struct mii_softc *);
94
95static const struct mii_phy_funcs pnphy_funcs = {
96	pnphy_service,
97	pnphy_status,
98	pnphy_reset
99};
100
101static int
102pnphy_probe(device_t dev)
103{
104	struct mii_attach_args *ma;
105
106	ma = device_get_ivars(dev);
107
108	/*
109	 * The dc driver will report the 82c168 vendor and device
110	 * ID to let us know that it wants us to attach.
111	 */
112	if (ma->mii_id1 != DC_VENDORID_LO ||
113	    ma->mii_id2 != DC_DEVICEID_82C168)
114		return (ENXIO);
115
116	device_set_desc(dev, "PNIC 82c168 media interface");
117
118	return (BUS_PROBE_DEFAULT);
119}
120
121static int
122pnphy_attach(device_t dev)
123{
124	struct mii_softc *sc;
125
126	sc = device_get_softc(dev);
127
128	mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
129	    &pnphy_funcs, 0);
130
131	sc->mii_capabilities =
132	    BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX;
133	sc->mii_capabilities &= sc->mii_capmask;
134	device_printf(dev, " ");
135	mii_phy_add_media(sc);
136	printf("\n");
137
138	MIIBUS_MEDIAINIT(sc->mii_dev);
139	return (0);
140}
141
142static int
143pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
144{
145	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
146
147	switch (cmd) {
148	case MII_POLLSTAT:
149		break;
150
151	case MII_MEDIACHG:
152		/*
153		 * If the interface is not up, don't do anything.
154		 */
155		if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
156			break;
157
158		/*
159		 * Note that auto-negotiation is broken on this chip.
160		 */
161		switch (IFM_SUBTYPE(ife->ifm_media)) {
162		case IFM_100_TX:
163			mii->mii_media_active = IFM_ETHER | IFM_100_TX;
164			if ((ife->ifm_media & IFM_FDX) != 0)
165				mii->mii_media_active |= IFM_FDX;
166			MIIBUS_STATCHG(sc->mii_dev);
167			return (0);
168		case IFM_10_T:
169			mii->mii_media_active = IFM_ETHER | IFM_10_T;
170			if ((ife->ifm_media & IFM_FDX) != 0)
171				mii->mii_media_active |= IFM_FDX;
172			MIIBUS_STATCHG(sc->mii_dev);
173			return (0);
174		default:
175			return (EINVAL);
176		}
177		break;
178
179	case MII_TICK:
180		/*
181		 * Is the interface even up?
182		 */
183		if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
184			return (0);
185
186		break;
187	}
188
189	/* Update the media status. */
190	PHY_STATUS(sc);
191
192	/* Callback if something changed. */
193	mii_phy_update(sc, cmd);
194	return (0);
195}
196
197static void
198pnphy_status(struct mii_softc *sc)
199{
200	struct mii_data *mii = sc->mii_pdata;
201	int reg;
202	struct dc_softc		*dc_sc;
203
204	dc_sc = if_getsoftc(mii->mii_ifp);
205
206	mii->mii_media_status = IFM_AVALID;
207	mii->mii_media_active = IFM_ETHER;
208
209	reg = CSR_READ_4(dc_sc, DC_ISR);
210	if (!(reg & DC_ISR_LINKFAIL))
211		mii->mii_media_status |= IFM_ACTIVE;
212	reg = CSR_READ_4(dc_sc, DC_NETCFG);
213	if (reg & DC_NETCFG_SPEEDSEL)
214		mii->mii_media_active |= IFM_10_T;
215	else
216		mii->mii_media_active |= IFM_100_TX;
217	if (reg & DC_NETCFG_FULLDUPLEX)
218		mii->mii_media_active |= IFM_FDX;
219	else
220		mii->mii_media_active |= IFM_HDX;
221}
222
223static void
224pnphy_reset(struct mii_softc *sc __unused)
225{
226
227}
228