if_wi_obio.c revision 1.25 
1/*	$NetBSD: if_wi_obio.c,v 1.25 2021/03/05 07:15:53 rin Exp $	*/
2
3/*-
4 * Copyright (c) 2001 Tsubai Masanari.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: if_wi_obio.c,v 1.25 2021/03/05 07:15:53 rin Exp $");
31
32#include "opt_inet.h"
33
34#include <sys/param.h>
35#include <sys/callout.h>
36#include <sys/device.h>
37#include <sys/socket.h>
38#include <sys/systm.h>
39
40#ifdef INET
41#include <net/if.h>
42#include <net/if_ether.h>
43#include <net/if_media.h>
44#include <net80211/ieee80211_var.h>
45#include <net80211/ieee80211_radiotap.h>
46#include <net80211/ieee80211_rssadapt.h>
47#endif
48
49#include <machine/autoconf.h>
50#include <sys/bus.h>
51
52#include <dev/ic/wi_ieee.h>
53#include <dev/ic/wireg.h>
54#include <dev/ic/wivar.h>
55#include <macppc/dev/obiovar.h>
56
57static int wi_obio_match(device_t, cfdata_t, void *);
58static void wi_obio_attach(device_t, device_t, void *);
59static int wi_obio_enable(device_t, int);
60
61struct wi_obio_softc {
62	struct wi_softc sc_wi;
63	bus_space_tag_t sc_tag;
64};
65
66CFATTACH_DECL_NEW(wi_obio, sizeof(struct wi_obio_softc),
67    wi_obio_match, wi_obio_attach, NULL, NULL);
68
69int
70wi_obio_match(device_t parent, cfdata_t match, void *aux)
71{
72	struct confargs *ca = aux;
73
74	if (ca->ca_nintr < 4 || ca->ca_nreg < 8)
75		return 0;
76
77	if (strcmp(ca->ca_name, "radio") != 0)
78		return 0;
79
80	return 1;
81}
82
83#define OBIO_WI_FCR2	0x40
84#define OBIO_WI_GPIO	0x6a
85#define OBIO_WI_EXTINT	0x58
86
87void
88wi_obio_attach(device_t parent, device_t self, void *aux)
89{
90	struct wi_obio_softc * const sc = device_private(self);
91	struct wi_softc * const wisc = &sc->sc_wi;
92	struct confargs * const ca = aux;
93
94	aprint_normal(" irq %d:", ca->ca_intr[0]);
95	intr_establish_xname(ca->ca_intr[0], IST_LEVEL, IPL_NET, wi_intr, sc,
96	    device_xname(self));
97
98	wisc->sc_dev = self;
99	sc->sc_tag = wisc->sc_iot = ca->ca_tag;
100
101	if (bus_space_map(wisc->sc_iot, ca->ca_baseaddr + ca->ca_reg[0],
102	    ca->ca_reg[1], 0, &wisc->sc_ioh)) {
103		printf(" can't map i/o space\n");
104		return;
105	}
106
107	wisc->sc_enabled = 1;
108	wisc->sc_enable = wi_obio_enable;
109
110	if (wi_attach(wisc, 0)) {
111		printf("%s: failed to attach controller\n", device_xname(self));
112		return;
113	}
114
115	if (!pmf_device_register(self, NULL, NULL))
116		aprint_error_dev(self, "couldn't establish power handler\n");
117	else
118		pmf_class_network_register(self, &sc->sc_wi.sc_if);
119
120	/* Disable the card. */
121	wisc->sc_enabled = 0;
122	wi_obio_enable(self, 0);
123}
124
125int
126wi_obio_enable(device_t self, int enable)
127{
128	uint32_t x;
129
130	if (enable) {
131		x = obio_read_4(OBIO_WI_FCR2);
132		x |= 0x4;
133		obio_write_4(OBIO_WI_FCR2, x);
134
135		/* Enable card slot. */
136		obio_write_1(OBIO_WI_GPIO + 0x0f, 5);
137		delay(1000);
138		obio_write_1(OBIO_WI_GPIO + 0x0f, 4);
139		delay(1000);
140		x = obio_read_4(OBIO_WI_FCR2);
141		x &= ~0x8000000;
142
143		obio_write_4(OBIO_WI_FCR2, x);
144		/* out8(gpio + 0x10, 4); */
145
146		obio_write_1(OBIO_WI_EXTINT + 0x0b, 0);
147		obio_write_1(OBIO_WI_EXTINT + 0x0a, 0x28);
148		obio_write_1(OBIO_WI_EXTINT + 0x0d, 0x28);
149		obio_write_1(OBIO_WI_GPIO + 0x0d, 0x28);
150		obio_write_1(OBIO_WI_GPIO + 0x0e, 0x28);
151		obio_write_4(0x1c000, 0);
152
153		/* Initialize the card. */
154		obio_write_4(0x1a3e0, 0x41);
155		x = obio_read_4(OBIO_WI_FCR2);
156		x |= 0x8000000;
157		obio_write_4(OBIO_WI_FCR2, x);
158	} else {
159		x = obio_read_4(OBIO_WI_FCR2);
160		x &= ~0x4;
161		obio_write_4(OBIO_WI_FCR2, x);
162		/* out8(gpio + 0x10, 0); */
163	}
164
165	return 0;
166}
167