summaryrefslogtreecommitdiffstats
path: root/sys/dev/dc/pnphy.c
blob: dce8282666aabe3eb25f97fe1c6b11a4a0188c54 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
/*
 * Copyright (c) 1997, 1998, 1999
 *	Bill Paul <wpaul@ee.columbia.edu>.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Bill Paul.
 * 4. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD$
 */

/*
 * Pseudo-driver for media selection on the Lite-On PNIC 82c168
 * chip. The NWAY support on this chip is horribly broken, so we
 * only support manual mode selection. This is lame, but getting
 * NWAY to work right is amazingly difficult.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/bus.h>

#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_media.h>

#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/mii/miidevs.h>

#include <machine/bus_pio.h>
#include <machine/bus_memio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>

#include <pci/if_dcreg.h>

#include "miibus_if.h"

#if !defined(lint)
static const char rcsid[] =
  "$FreeBSD$";
#endif

#define DC_SETBIT(sc, reg, x)                           \
        CSR_WRITE_4(sc, reg,                            \
                CSR_READ_4(sc, reg) | x)

#define DC_CLRBIT(sc, reg, x)                           \
        CSR_WRITE_4(sc, reg,                            \
                CSR_READ_4(sc, reg) & ~x)

static int pnphy_probe		__P((device_t));
static int pnphy_attach		__P((device_t));
static int pnphy_detach		__P((device_t));

static device_method_t pnphy_methods[] = {
	/* device interface */
	DEVMETHOD(device_probe,		pnphy_probe),
	DEVMETHOD(device_attach,	pnphy_attach),
	DEVMETHOD(device_detach,	pnphy_detach),
	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
	{ 0, 0 }
};

static devclass_t pnphy_devclass;

static driver_t pnphy_driver = {
	"pnphy",
	pnphy_methods,
	sizeof(struct mii_softc)
};

DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0);

static int	pnphy_service __P((struct mii_softc *, struct mii_data *, int));
static void	pnphy_status __P((struct mii_softc *));

static int pnphy_probe(dev)
	device_t		dev;
{
	struct mii_attach_args *ma;

	ma = device_get_ivars(dev);

	/*
	 * The dc driver will report the 82c168 vendor and device
	 * ID to let us know that it wants us to attach.
	 */
	if (ma->mii_id1 != DC_VENDORID_LO ||
	    ma->mii_id2 != DC_DEVICEID_82C168)
		return(ENXIO);

	device_set_desc(dev, "PNIC 82c168 media interface");

	return (0);
}

static int pnphy_attach(dev)
	device_t		dev;
{
	struct mii_softc *sc;
	struct mii_attach_args *ma;
	struct mii_data *mii;

	sc = device_get_softc(dev);
	ma = device_get_ivars(dev);
	sc->mii_dev = device_get_parent(dev);
	mii = device_get_softc(sc->mii_dev);
	LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list);

	sc->mii_inst = mii->mii_instance;
	sc->mii_phy = ma->mii_phyno;
	sc->mii_service = pnphy_service;
	sc->mii_pdata = mii;

	sc->mii_flags |= MIIF_NOISOLATE;
	mii->mii_instance++;

#define	ADD(m, c)	ifmedia_add(&mii->mii_media, (m), (c), NULL)

	sc->mii_capabilities =
	    BMSR_100TXFDX|BMSR_100TXHDX|BMSR_10TFDX|BMSR_10THDX;
	sc->mii_capabilities &= ma->mii_capmask;
	device_printf(dev, " ");
	if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
		printf("no media present");
	else
		mii_add_media(mii, sc->mii_capabilities, sc->mii_inst);
	printf("\n");
	ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, sc->mii_inst),
	    BMCR_ISO);

	ADD(IFM_MAKEWORD(IFM_ETHER, IFM_100_TX, IFM_LOOP, sc->mii_inst),
	    BMCR_LOOP|BMCR_S100);

#undef ADD

	MIIBUS_MEDIAINIT(sc->mii_dev);
	return(0);
}

static int pnphy_detach(dev)
	device_t		dev;
{
	struct mii_softc *sc;
	struct mii_data *mii;

	sc = device_get_softc(dev);
	mii = device_get_softc(device_get_parent(dev));
	sc->mii_dev = NULL;
	LIST_REMOVE(sc, mii_list);

	return(0);
}

static int
pnphy_service(sc, mii, cmd)
	struct mii_softc *sc;
	struct mii_data *mii;
	int cmd;
{
	struct dc_softc		*dc_sc;
	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;

	dc_sc = mii->mii_ifp->if_softc;

	switch (cmd) {
	case MII_POLLSTAT:
		/*
		 * If we're not polling our PHY instance, just return.
		 */
		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
			return (0);
		}
		break;

	case MII_MEDIACHG:
		/*
		 * If the media indicates a different PHY instance,
		 * isolate ourselves.
		 */
		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
			return (0);

		/*
		 * If the interface is not up, don't do anything.
		 */
		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
			break;

		sc->mii_flags = 0;

		switch (IFM_SUBTYPE(ife->ifm_media)) {
		case IFM_AUTO:
			/* NWAY is busted on this chip */
		case IFM_100_T4:
			/*
			 * XXX Not supported as a manual setting right now.
			 */
			return (EINVAL);
		case IFM_100_TX:
			mii->mii_media_active = IFM_ETHER|IFM_100_TX;
			if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
				mii->mii_media_active |= IFM_FDX;
			MIIBUS_STATCHG(sc->mii_dev);
			return(0);
			break;
		case IFM_10_T:
			mii->mii_media_active = IFM_ETHER|IFM_10_T;
			if ((ife->ifm_media & IFM_GMASK) == IFM_FDX)
				mii->mii_media_active |= IFM_FDX;
			MIIBUS_STATCHG(sc->mii_dev);
			return(0);
			break;
		default:
			return(EINVAL);
			break;
		}
		break;

	case MII_TICK:
		/*
		 * If we're not currently selected, just return.
		 */
		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
			return (0);

		/*
		 * Is the interface even up?
		 */
		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
			return (0);

		break;
	}

	/* Update the media status. */
	pnphy_status(sc);

	/* Callback if something changed. */
	mii_phy_update(sc, cmd);
	return (0);
}

static void
pnphy_status(sc)
	struct mii_softc *sc;
{
	struct mii_data *mii = sc->mii_pdata;
	int reg;
	struct dc_softc		*dc_sc;

	dc_sc = mii->mii_ifp->if_softc;

	mii->mii_media_status = IFM_AVALID;
	mii->mii_media_active = IFM_ETHER;

	reg = CSR_READ_4(dc_sc, DC_ISR);

	if (!(reg & DC_ISR_LINKFAIL))
		mii->mii_media_status |= IFM_ACTIVE;

	if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL)
		mii->mii_media_active |= IFM_10_T;
	else
		mii->mii_media_active |= IFM_100_TX;
	if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX)
		mii->mii_media_active |= IFM_FDX;

	return;
}
OpenPOWER on IntegriCloud