truephy.c revision 331722 
1/*-
2 * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Sepherosa Ziehau <sepherosa@gmail.com>
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 *
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in
15 *    the documentation and/or other materials provided with the
16 *    distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 *    contributors may be used to endorse or promote products derived
19 *    from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $DragonFly: src/sys/dev/netif/mii_layer/truephy.c,v 1.3 2008/02/10 07:29:27 sephe Exp $
35 * $FreeBSD: stable/11/sys/dev/mii/truephy.c 331722 2018-03-29 02:50:57Z eadler $
36 */
37
38#include <sys/param.h>
39#include <sys/systm.h>
40#include <sys/kernel.h>
41#include <sys/socket.h>
42#include <sys/errno.h>
43#include <sys/module.h>
44#include <sys/bus.h>
45
46#include <net/if.h>
47#include <net/if_var.h>
48#include <net/if_media.h>
49#include <net/if_arp.h>
50#include <net/ethernet.h>
51#include <net/if_vlan_var.h>
52
53#include <dev/mii/mii.h>
54#include <dev/mii/miivar.h>
55#include "miidevs.h"
56
57#include <dev/mii/truephyreg.h>
58
59#include "miibus_if.h"
60
61#define	TRUEPHY_FRAMELEN(mtu)	\
62    (ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN + (mtu) + ETHER_CRC_LEN)
63
64static int	truephy_service(struct mii_softc *, struct mii_data *, int);
65static int	truephy_attach(device_t);
66static int	truephy_probe(device_t);
67static void	truephy_reset(struct mii_softc *);
68static void	truephy_status(struct mii_softc *);
69
70static device_method_t truephy_methods[] = {
71	/* device interface */
72	DEVMETHOD(device_probe,		truephy_probe),
73	DEVMETHOD(device_attach,	truephy_attach),
74	DEVMETHOD(device_detach,	mii_phy_detach),
75	DEVMETHOD(device_shutdown,	bus_generic_shutdown),
76	DEVMETHOD_END
77};
78
79static const struct mii_phydesc truephys[] = {
80	MII_PHY_DESC(AGERE,	ET1011),
81	MII_PHY_DESC(AGERE,	ET1011C),
82	MII_PHY_END
83};
84
85static devclass_t truephy_devclass;
86
87static driver_t truephy_driver = {
88	"truephy",
89	truephy_methods,
90	sizeof(struct mii_softc)
91};
92
93DRIVER_MODULE(truephy, miibus, truephy_driver, truephy_devclass, 0, 0);
94
95static const struct mii_phy_funcs truephy_funcs = {
96	truephy_service,
97	truephy_status,
98	truephy_reset
99};
100
101static const struct truephy_dsp {
102	uint16_t	index;
103	uint16_t	data;
104} truephy_dspcode[] = {
105	{ 0x880b,	0x0926 },	/* AfeIfCreg4B1000Msbs */
106	{ 0x880c,	0x0926 },	/* AfeIfCreg4B100Msbs */
107	{ 0x880d,	0x0926 },	/* AfeIfCreg4B10Msbs */
108
109	{ 0x880e,	0xb4d3 },	/* AfeIfCreg4B1000Lsbs */
110	{ 0x880f,	0xb4d3 },	/* AfeIfCreg4B100Lsbs */
111	{ 0x8810,	0xb4d3 },	/* AfeIfCreg4B10Lsbs */
112
113	{ 0x8805,	0xb03e },	/* AfeIfCreg3B1000Msbs */
114	{ 0x8806,	0xb03e },	/* AfeIfCreg3B100Msbs */
115	{ 0x8807,	0xff00 },	/* AfeIfCreg3B10Msbs */
116
117	{ 0x8808,	0xe090 },	/* AfeIfCreg3B1000Lsbs */
118	{ 0x8809,	0xe110 },	/* AfeIfCreg3B100Lsbs */
119	{ 0x880a,	0x0000 },	/* AfeIfCreg3B10Lsbs */
120
121	{ 0x300d,	1      },	/* DisableNorm */
122
123	{ 0x280c,	0x0180 },	/* LinkHoldEnd */
124
125	{ 0x1c21,	0x0002 },	/* AlphaM */
126
127	{ 0x3821,	6      },	/* FfeLkgTx0 */
128	{ 0x381d,	1      },	/* FfeLkg1g4 */
129	{ 0x381e,	1      },	/* FfeLkg1g5 */
130	{ 0x381f,	1      },	/* FfeLkg1g6 */
131	{ 0x3820,	1      },	/* FfeLkg1g7 */
132
133	{ 0x8402,	0x01f0 },	/* Btinact */
134	{ 0x800e,	20     },	/* LftrainTime */
135	{ 0x800f,	24     },	/* DvguardTime */
136	{ 0x8010,	46     }	/* IdlguardTime */
137};
138
139static int
140truephy_probe(device_t dev)
141{
142
143	return (mii_phy_dev_probe(dev, truephys, BUS_PROBE_DEFAULT));
144}
145
146static int
147truephy_attach(device_t dev)
148{
149	struct mii_softc *sc;
150
151	sc = device_get_softc(dev);
152
153	mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE,
154	   &truephy_funcs, 0);
155
156	PHY_RESET(sc);
157
158	sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & sc->mii_capmask;
159	if (sc->mii_capabilities & BMSR_EXTSTAT) {
160		sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
161		/* No 1000baseT half-duplex support */
162		sc->mii_extcapabilities &= ~EXTSR_1000THDX;
163	}
164
165	device_printf(dev, " ");
166	mii_phy_add_media(sc);
167	printf("\n");
168
169	MIIBUS_MEDIAINIT(sc->mii_dev);
170	return (0);
171}
172
173static int
174truephy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
175{
176	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
177	int bmcr;
178
179	switch (cmd) {
180	case MII_POLLSTAT:
181		break;
182
183	case MII_MEDIACHG:
184		if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
185			bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_AUTOEN;
186			PHY_WRITE(sc, MII_BMCR, bmcr);
187			PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_PDOWN);
188		}
189
190		mii_phy_setmedia(sc);
191
192		if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
193			bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_PDOWN;
194			PHY_WRITE(sc, MII_BMCR, bmcr);
195
196			if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
197				PHY_WRITE(sc, MII_BMCR,
198				    bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
199			}
200		}
201		break;
202
203	case MII_TICK:
204		if (mii_phy_tick(sc) == EJUSTRETURN)
205			return (0);
206		break;
207	}
208
209	/* Update the media status. */
210	PHY_STATUS(sc);
211
212	/* Callback if something changed. */
213	mii_phy_update(sc, cmd);
214	return (0);
215}
216
217static void
218truephy_reset(struct mii_softc *sc)
219{
220	int i;
221
222	if (sc->mii_mpd_model == MII_MODEL_AGERE_ET1011) {
223		mii_phy_reset(sc);
224		return;
225	}
226
227	for (i = 0; i < 2; ++i) {
228		PHY_READ(sc, MII_PHYIDR1);
229		PHY_READ(sc, MII_PHYIDR2);
230
231		PHY_READ(sc, TRUEPHY_CTRL);
232		PHY_WRITE(sc, TRUEPHY_CTRL,
233			  TRUEPHY_CTRL_DIAG | TRUEPHY_CTRL_RSV1);
234
235		PHY_WRITE(sc, TRUEPHY_INDEX, TRUEPHY_INDEX_MAGIC);
236		PHY_READ(sc, TRUEPHY_DATA);
237
238		PHY_WRITE(sc, TRUEPHY_CTRL, TRUEPHY_CTRL_RSV1);
239	}
240
241	PHY_READ(sc, MII_BMCR);
242	PHY_READ(sc, TRUEPHY_CTRL);
243	PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_PDOWN | BMCR_S1000);
244	PHY_WRITE(sc, TRUEPHY_CTRL,
245		  TRUEPHY_CTRL_DIAG | TRUEPHY_CTRL_RSV1 | TRUEPHY_CTRL_RSV0);
246
247	for (i = 0; i < nitems(truephy_dspcode); ++i) {
248		const struct truephy_dsp *dsp = &truephy_dspcode[i];
249
250		PHY_WRITE(sc, TRUEPHY_INDEX, dsp->index);
251		PHY_WRITE(sc, TRUEPHY_DATA, dsp->data);
252
253		PHY_WRITE(sc, TRUEPHY_INDEX, dsp->index);
254		PHY_READ(sc, TRUEPHY_DATA);
255	}
256
257	PHY_READ(sc, MII_BMCR);
258	PHY_READ(sc, TRUEPHY_CTRL);
259	PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN |  BMCR_S1000);
260	PHY_WRITE(sc, TRUEPHY_CTRL, TRUEPHY_CTRL_RSV1);
261
262	mii_phy_reset(sc);
263
264	if (TRUEPHY_FRAMELEN((if_getmtu(sc->mii_pdata->mii_ifp)) > 2048)) {
265		int conf;
266
267		conf = PHY_READ(sc, TRUEPHY_CONF);
268		conf &= ~TRUEPHY_CONF_TXFIFO_MASK;
269		conf |= TRUEPHY_CONF_TXFIFO_24;
270		PHY_WRITE(sc, TRUEPHY_CONF, conf);
271	}
272}
273
274static void
275truephy_status(struct mii_softc *sc)
276{
277	struct mii_data *mii = sc->mii_pdata;
278	int bmsr, bmcr, sr;
279
280	mii->mii_media_status = IFM_AVALID;
281	mii->mii_media_active = IFM_ETHER;
282
283	sr = PHY_READ(sc, TRUEPHY_SR);
284	bmcr = PHY_READ(sc, MII_BMCR);
285
286	bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
287	if (bmsr & BMSR_LINK)
288		mii->mii_media_status |= IFM_ACTIVE;
289
290	if (bmcr & BMCR_AUTOEN) {
291		if ((bmsr & BMSR_ACOMP) == 0) {
292			mii->mii_media_active |= IFM_NONE;
293			return;
294		}
295	}
296
297	switch (sr & TRUEPHY_SR_SPD_MASK) {
298	case TRUEPHY_SR_SPD_1000T:
299		mii->mii_media_active |= IFM_1000_T;
300		break;
301	case TRUEPHY_SR_SPD_100TX:
302		mii->mii_media_active |= IFM_100_TX;
303		break;
304	case TRUEPHY_SR_SPD_10T:
305		mii->mii_media_active |= IFM_10_T;
306		break;
307	default:
308		/* XXX will this ever happen? */
309		printf("invalid media SR %#x\n", sr);
310		mii->mii_media_active |= IFM_NONE;
311		return;
312	}
313
314	if (sr & TRUEPHY_SR_FDX)
315		mii->mii_media_active |= IFM_FDX | mii_phy_flowstatus(sc);
316	else
317		mii->mii_media_active |= IFM_HDX;
318}
319