1/*
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 1997, 1998, 1999
5 *	Bill Paul <wpaul@ee.columbia.edu>.  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. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Bill Paul.
18 * 4. Neither the name of the author nor the names of any co-contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
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 driver_t pnphy_driver = {
82	"pnphy",
83	pnphy_methods,
84	sizeof(struct mii_softc)
85};
86
87DRIVER_MODULE(pnphy, miibus, pnphy_driver, 0, 0);
88
89static int	pnphy_service(struct mii_softc *, struct mii_data *, int);
90static void	pnphy_status(struct mii_softc *);
91static void	pnphy_reset(struct mii_softc *);
92
93static const struct mii_phy_funcs pnphy_funcs = {
94	pnphy_service,
95	pnphy_status,
96	pnphy_reset
97};
98
99static int
100pnphy_probe(device_t dev)
101{
102	struct mii_attach_args *ma;
103
104	ma = device_get_ivars(dev);
105
106	/*
107	 * The dc driver will report the 82c168 vendor and device
108	 * ID to let us know that it wants us to attach.
109	 */
110	if (ma->mii_id1 != DC_VENDORID_LO ||
111	    ma->mii_id2 != DC_DEVICEID_82C168)
112		return (ENXIO);
113
114	device_set_desc(dev, "PNIC 82c168 media interface");
115
116	return (BUS_PROBE_DEFAULT);
117}
118
119static int
120pnphy_attach(device_t dev)
121{
122	struct mii_softc *sc;
123
124	sc = device_get_softc(dev);
125
126	mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
127	    &pnphy_funcs, 0);
128
129	sc->mii_capabilities =
130	    BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX;
131	sc->mii_capabilities &= sc->mii_capmask;
132	device_printf(dev, " ");
133	mii_phy_add_media(sc);
134	printf("\n");
135
136	MIIBUS_MEDIAINIT(sc->mii_dev);
137	return (0);
138}
139
140static int
141pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
142{
143	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
144
145	switch (cmd) {
146	case MII_POLLSTAT:
147		break;
148
149	case MII_MEDIACHG:
150		/*
151		 * If the interface is not up, don't do anything.
152		 */
153		if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
154			break;
155
156		/*
157		 * Note that auto-negotiation is broken on this chip.
158		 */
159		switch (IFM_SUBTYPE(ife->ifm_media)) {
160		case IFM_100_TX:
161			mii->mii_media_active = IFM_ETHER | IFM_100_TX;
162			if ((ife->ifm_media & IFM_FDX) != 0)
163				mii->mii_media_active |= IFM_FDX;
164			MIIBUS_STATCHG(sc->mii_dev);
165			return (0);
166		case IFM_10_T:
167			mii->mii_media_active = IFM_ETHER | IFM_10_T;
168			if ((ife->ifm_media & IFM_FDX) != 0)
169				mii->mii_media_active |= IFM_FDX;
170			MIIBUS_STATCHG(sc->mii_dev);
171			return (0);
172		default:
173			return (EINVAL);
174		}
175		break;
176
177	case MII_TICK:
178		/*
179		 * Is the interface even up?
180		 */
181		if ((if_getflags(mii->mii_ifp) & IFF_UP) == 0)
182			return (0);
183
184		break;
185	}
186
187	/* Update the media status. */
188	PHY_STATUS(sc);
189
190	/* Callback if something changed. */
191	mii_phy_update(sc, cmd);
192	return (0);
193}
194
195static void
196pnphy_status(struct mii_softc *sc)
197{
198	struct mii_data *mii = sc->mii_pdata;
199	int reg;
200	struct dc_softc		*dc_sc;
201
202	dc_sc = if_getsoftc(mii->mii_ifp);
203
204	mii->mii_media_status = IFM_AVALID;
205	mii->mii_media_active = IFM_ETHER;
206
207	reg = CSR_READ_4(dc_sc, DC_ISR);
208	if (!(reg & DC_ISR_LINKFAIL))
209		mii->mii_media_status |= IFM_ACTIVE;
210	reg = CSR_READ_4(dc_sc, DC_NETCFG);
211	if (reg & DC_NETCFG_SPEEDSEL)
212		mii->mii_media_active |= IFM_10_T;
213	else
214		mii->mii_media_active |= IFM_100_TX;
215	if (reg & DC_NETCFG_FULLDUPLEX)
216		mii->mii_media_active |= IFM_FDX;
217	else
218		mii->mii_media_active |= IFM_HDX;
219}
220
221static void
222pnphy_reset(struct mii_softc *sc __unused)
223{
224
225}
226