1/* $NetBSD: dl10019.c,v 1.12 2012/07/22 14:32:56 matt Exp $ */
2
3/*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: dl10019.c,v 1.12 2012/07/22 14:32:56 matt Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/mbuf.h>
38#include <sys/syslog.h>
39#include <sys/socket.h>
40#include <sys/device.h>
41
42#include <net/if.h>
43#include <net/if_ether.h>
44#include <net/if_media.h>
45
46#include <sys/bus.h>
47#include <sys/intr.h>
48
49#include <dev/mii/miivar.h>
50#include <dev/mii/mii.h>
51#include <dev/mii/mii_bitbang.h>
52
53#include <dev/ic/dp8390reg.h>
54#include <dev/ic/dp8390var.h>
55
56#include <dev/ic/ne2000reg.h>
57#include <dev/ic/ne2000var.h>
58
59#include <dev/ic/dl10019reg.h>
60#include <dev/ic/dl10019var.h>
61
62int dl10019_mii_readreg(device_t, int, int);
63void dl10019_mii_writereg(device_t, int, int, int);
64void dl10019_mii_statchg(struct ifnet *);
65
66/*
67 * MII bit-bang glue.
68 */
69u_int32_t dl10019_mii_bitbang_read(device_t);
70void dl10019_mii_bitbang_write(device_t, u_int32_t);
71
72const struct mii_bitbang_ops dl10019_mii_bitbang_ops = {
73 dl10019_mii_bitbang_read,
74 dl10019_mii_bitbang_write,
75 {
76 DL0_GPIO_MII_DATAOUT, /* MII_BIT_MDO */
77 DL0_GPIO_MII_DATAIN, /* MII_BIT_MDI */
78 DL0_GPIO_MII_CLK, /* MII_BIT_MDC */
79 DL0_19_GPIO_MII_DIROUT, /* MII_BIT_DIR_HOST_PHY */
80 0, /* MII_BIT_DIR_PHY_HOST */
81 }
82};
83
84const struct mii_bitbang_ops dl10022_mii_bitbang_ops = {
85 dl10019_mii_bitbang_read,
86 dl10019_mii_bitbang_write,
87 {
88 DL0_GPIO_MII_DATAOUT, /* MII_BIT_MDO */
89 DL0_GPIO_MII_DATAIN, /* MII_BIT_MDI */
90 DL0_GPIO_MII_CLK, /* MII_BIT_MDC */
91 DL0_22_GPIO_MII_DIROUT, /* MII_BIT_DIR_HOST_PHY */
92 0, /* MII_BIT_DIR_PHY_HOST */
93 }
94};
95
96static void
97dl10019_mii_reset(struct dp8390_softc *sc)
98{
99 struct ne2000_softc *nsc = (void *) sc;
100 int i;
101
102 if (nsc->sc_type != NE2000_TYPE_DL10022)
103 return;
104
105 for (i = 0; i < 2; i++) {
106 bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO,
107 0x08);
108 delay(1);
109 bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO,
110 0x0c);
111 delay(1);
112 }
113 bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO, 0x00);
114}
115
116void
117dl10019_media_init(struct dp8390_softc *sc)
118{
119 struct ifnet *ifp = &sc->sc_ec.ec_if;
120
121 sc->sc_mii.mii_ifp = ifp;
122 sc->sc_mii.mii_readreg = dl10019_mii_readreg;
123 sc->sc_mii.mii_writereg = dl10019_mii_writereg;
124 sc->sc_mii.mii_statchg = dl10019_mii_statchg;
125 ifmedia_init(&sc->sc_mii.mii_media, IFM_IMASK, dp8390_mediachange,
126 dp8390_mediastatus);
127
128 dl10019_mii_reset(sc);
129
130 mii_attach(sc->sc_dev, &sc->sc_mii, 0xffffffff, MII_PHY_ANY,
131 MII_OFFSET_ANY, 0);
132
133 if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) {
134 ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL);
135 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE);
136 } else
137 ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO);
138}
139
140void
141dl10019_media_fini(struct dp8390_softc *sc)
142{
143
144 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY);
145}
146
147int
148dl10019_mediachange(struct dp8390_softc *sc)
149{
150 int rc;
151
152 if ((rc = mii_mediachg(&sc->sc_mii)) == ENXIO)
153 return 0;
154 return rc;
155}
156
157void
158dl10019_mediastatus(struct dp8390_softc *sc, struct ifmediareq *ifmr)
159{
160
161 mii_pollstat(&sc->sc_mii);
162 ifmr->ifm_status = sc->sc_mii.mii_media_status;
163 ifmr->ifm_active = sc->sc_mii.mii_media_active;
164}
165
166void
167dl10019_init_card(struct dp8390_softc *sc)
168{
169
170 dl10019_mii_reset(sc);
171 mii_mediachg(&sc->sc_mii);
172}
173
174void
175dl10019_stop_card(struct dp8390_softc *sc)
176{
177
178 mii_down(&sc->sc_mii);
179}
180
181u_int32_t
182dl10019_mii_bitbang_read(device_t self)
183{
184 struct dp8390_softc *sc = device_private(self);
185
186 /* We're already in Page 0. */
187 return (bus_space_read_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO) &
188 ~DL0_GPIO_PRESERVE);
189}
190
191void
192dl10019_mii_bitbang_write(device_t self, u_int32_t val)
193{
194 struct dp8390_softc *sc = device_private(self);
195 u_int8_t gpio;
196
197 /* We're already in Page 0. */
198 gpio = bus_space_read_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO);
199 bus_space_write_1(sc->sc_regt, sc->sc_regh, NEDL_DL0_GPIO,
200 (val & ~DL0_GPIO_PRESERVE) | (gpio & DL0_GPIO_PRESERVE));
201}
202
203int
204dl10019_mii_readreg(device_t self, int phy, int reg)
205{
206 struct ne2000_softc *nsc = device_private(self);
207 const struct mii_bitbang_ops *ops;
208 int val;
209
210 ops = (nsc->sc_type == NE2000_TYPE_DL10022) ?
211 &dl10022_mii_bitbang_ops : &dl10019_mii_bitbang_ops;
212
213 val = mii_bitbang_readreg(self, ops, phy, reg);
214
215 return (val);
216}
217
218void
219dl10019_mii_writereg(device_t self, int phy, int reg, int val)
220{
221 struct ne2000_softc *nsc = device_private(self);
222 const struct mii_bitbang_ops *ops;
223
224 ops = (nsc->sc_type == NE2000_TYPE_DL10022) ?
225 &dl10022_mii_bitbang_ops : &dl10019_mii_bitbang_ops;
226
227 mii_bitbang_writereg(self, ops, phy, reg, val);
228}
229
230void
231dl10019_mii_statchg(struct ifnet *ifp)
232{
233 struct ne2000_softc *nsc = ifp->if_softc;
234 struct dp8390_softc *sc = &nsc->sc_dp8390;
235
236 /*
237 * Disable collision detection on the DL10022 if
238 * we are on a full-duplex link.
239 */
240 if (nsc->sc_type == NE2000_TYPE_DL10022) {
241 u_int8_t diag;
242
243 if (sc->sc_mii.mii_media_active & IFM_FDX)
244 diag = DL0_DIAG_NOCOLLDETECT;
245 else
246 diag = 0;
247 bus_space_write_1(sc->sc_regt, sc->sc_regh,
248 NEDL_DL0_DIAG, diag);
249 }
250}
251