1/*	$NetBSD: gscbus.c,v 1.4 2022/09/29 06:39:58 skrll Exp $	*/
2
3/*	$OpenBSD: gscbus.c,v 1.13 2001/08/01 20:32:04 miod Exp $	*/
4
5/*
6 * Copyright (c) 1998 Michael Shalayeff
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
28 * THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31/*
32 * Sample IO layouts:
33 * 712:
34 *
35 * f0100000 -- lasi0
36 * f0102000 -- lpt0
37 * f0104000 -- audio0
38 * f0105000 -- com0
39 * f0106000 -- siop0
40 * f0107000 -- ie0
41 * f0108000 -- kbd0
42 * f0108100 -- pms0
43 * f010a000 -- fdc0
44 * f010c000 -- *lasi0
45 * f0200000 -- wax0
46 * f8000000 -- sti0
47 * fffbe000 -- cpu0
48 * fffbf000 -- mem0
49 *
50 * 725/50:
51 *
52 * f0820000 -- dma
53 * f0821000 -- hil
54 * f0822000 -- com1
55 * f0823000 -- com0
56 * f0824000 -- lpt0
57 * f0825000 -- siop0
58 * f0826000 -- ie0
59 * f0827000 -- dma reset
60 * f0828000 -- timers
61 * f0829000 -- domain kbd
62 * f082f000 -- asp0
63 * f1000000 -- audio0
64 * fc000000 -- eisa0
65 * fffbe000 -- cpu0
66 * fffbf000 -- mem0
67 *
68 */
69
70#include <sys/cdefs.h>
71__KERNEL_RCSID(0, "$NetBSD: gscbus.c,v 1.4 2022/09/29 06:39:58 skrll Exp $");
72
73#define GSCDEBUG
74
75#include "opt_kgdb.h"
76
77#include <sys/param.h>
78#include <sys/systm.h>
79#include <sys/device.h>
80#include <sys/mbuf.h>
81#include <sys/reboot.h>
82
83#include <machine/iomod.h>
84#include <machine/autoconf.h>
85#include <machine/cpufunc.h>
86
87#include <hppa/gsc/gscbusvar.h>
88#include <hppa/hppa/machdep.h>
89
90int	gscmatch(device_t, cfdata_t, void *);
91void	gscattach(device_t, device_t, void *);
92
93struct gsc_softc {
94	device_t sc_dev;
95	struct gsc_attach_args sc_ga;
96	void *sc_ih;
97};
98
99CFATTACH_DECL_NEW(gsc, sizeof(struct gsc_softc),
100    gscmatch, gscattach, NULL, NULL);
101
102/*
103 * pdc_scanbus calls this function back with each module
104 * it finds on the GSC bus.  We call the IC-specific function
105 * to fix up the module's attach arguments, then we match
106 * and attach it.
107 */
108static device_t gsc_module_callback(device_t, struct confargs *);
109static device_t
110gsc_module_callback(device_t self, struct confargs *ca)
111{
112	struct gsc_softc *sc = device_private(self);
113	struct gsc_attach_args ga;
114
115	/* Make the GSC attach args. */
116	ga = sc->sc_ga;
117	ga.ga_ca = *ca;
118	ga.ga_iot = sc->sc_ga.ga_iot;
119	ga.ga_dmatag = sc->sc_ga.ga_dmatag;
120	(*sc->sc_ga.ga_fix_args)(sc->sc_ga.ga_fix_args_cookie, &ga);
121
122	return config_found(self, &ga, mbprint,
123	    CFARGS(.submatch = mbsubmatch));
124}
125
126int
127gscmatch(device_t parent, cfdata_t cf, void *aux)
128{
129	struct gsc_attach_args *ga = aux;
130
131	return !strcmp(ga->ga_name, "gsc");
132}
133
134void
135gscattach(device_t parent, device_t self, void *aux)
136{
137	struct gsc_softc *sc = device_private(self);
138	struct gsc_attach_args *ga = aux;
139	struct cpu_info *ci = &cpus[0];
140
141	sc->sc_dev = self;
142	sc->sc_ga = *ga;
143
144#ifdef USELEDS
145	if (machine_ledaddr)
146		aprint_normal(": %sleds", machine_ledword? "word" : "");
147#endif
148
149	aprint_normal("\n");
150
151	/* Add the I/O subsystem's interrupt register. */
152	ga->ga_ir->ir_name = device_xname(self);
153	sc->sc_ih = hppa_intr_establish(IPL_NONE, NULL, ga->ga_ir,
154	    &ci->ci_ir, ga->ga_irq);
155
156	ga->ga_ca.ca_nmodules = MAXMODBUS;
157	ga->ga_ca.ca_hpabase = 0;
158	pdc_scanbus(self, &ga->ga_ca, gsc_module_callback);
159}
160
161int
162gscprint(void *aux, const char *pnp)
163{
164
165	return (UNCONF);
166}
167