pckbc_ofisa.c revision 1.19 
1/* $NetBSD: pckbc_ofisa.c,v 1.19 2021/01/27 03:10:21 thorpej Exp $ */
2
3/*
4 * Copyright (c) 1998
5 *	Matthias Drochner.  All rights reserved.
6 * Copyright (c) 2001
7 *	Matt Thomas.  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 BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__KERNEL_RCSID(0, "$NetBSD: pckbc_ofisa.c,v 1.19 2021/01/27 03:10:21 thorpej Exp $");
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/proc.h>
37#include <sys/device.h>
38#include <sys/malloc.h>
39#include <sys/errno.h>
40#include <sys/queue.h>
41#include <sys/bus.h>
42
43#include <dev/isa/isareg.h>
44#include <dev/isa/isavar.h>
45
46#include <dev/ofw/openfirm.h>
47#include <dev/ofisa/ofisavar.h>
48
49#include <dev/ic/i8042reg.h>
50#include <dev/ic/pckbcvar.h>
51
52static int pckbc_ofisa_match (device_t, cfdata_t, void *);
53static void pckbc_ofisa_attach (device_t, device_t, void *);
54
55struct pckbc_ofisa_softc {
56	struct pckbc_softc sc_pckbc;
57
58	isa_chipset_tag_t sc_ic;
59	struct ofisa_intr_desc sc_intr[PCKBC_NSLOTS];
60};
61
62CFATTACH_DECL_NEW(pckbc_ofisa, sizeof(struct pckbc_ofisa_softc),
63    pckbc_ofisa_match, pckbc_ofisa_attach, NULL, NULL);
64
65static void pckbc_ofisa_intr_establish (struct pckbc_softc *, pckbc_slot_t);
66
67static const struct device_compatible_entry compat_data[] = {
68	{ .compat = "INTC,80c42" },
69	DEVICE_COMPAT_EOL
70};
71
72static const struct device_compatible_entry port_compat_data[] = {
73	{ .compat = "pnpPNP,303",	.value = PCKBC_KBD_SLOT },
74	{ .compat = "pnpPNP,f03",	.value = PCKBC_AUX_SLOT },
75	DEVICE_COMPAT_EOL
76};
77
78static int
79pckbc_ofisa_match(device_t parent, cfdata_t match, void *aux)
80{
81	struct ofisa_attach_args *aa = aux;
82
83	return of_compatible_match(aa->oba.oba_phandle, compat_data) ? 5 : 0;
84}
85
86static void
87pckbc_ofisa_attach(device_t parent, device_t self, void *aux)
88{
89	struct pckbc_ofisa_softc *osc = device_private(self);
90	struct pckbc_softc *sc = &osc->sc_pckbc;
91	struct ofisa_attach_args *aa = aux;
92	const struct device_compatible_entry *dce;
93	struct pckbc_internal *t;
94	bus_space_tag_t iot;
95	bus_space_handle_t ioh_d, ioh_c;
96	struct ofisa_reg_desc regs[2];
97	int phandle;
98	int n;
99
100	sc->sc_dv = self;
101	osc->sc_ic = aa->ic;
102	iot = aa->iot;
103
104	phandle = OF_child(aa->oba.oba_phandle);
105	while (phandle != 0) {
106		dce = of_compatible_lookup(phandle, port_compat_data);
107		if (dce != NULL) {
108			ofisa_intr_get(phandle, &osc->sc_intr[dce->value], 1);
109		}
110		phandle = OF_peer(phandle);
111	}
112
113	sc->intr_establish = pckbc_ofisa_intr_establish;
114
115	if (pckbc_is_console(iot, IO_KBD)) {
116		t = &pckbc_consdata;
117		ioh_d = t->t_ioh_d;
118		ioh_c = t->t_ioh_c;
119		pckbc_console_attached = 1;
120		/* t->t_cmdbyte was initialized by cnattach */
121	} else {
122		n = ofisa_reg_get(aa->oba.oba_phandle, regs, 2);
123		if (n != 2 || regs[0].type != OFISA_REG_TYPE_IO || regs[1].type != OFISA_REG_TYPE_IO
124		    || bus_space_map(iot, regs[0].addr, regs[0].len, 0, &ioh_d)
125		    || bus_space_map(iot, regs[1].addr, regs[1].len, 0, &ioh_c))
126			panic("pckbc_attach: couldn't map");
127
128		t = malloc(sizeof(struct pckbc_internal), M_DEVBUF,
129		    M_WAITOK|M_ZERO);
130		t->t_iot = iot;
131		t->t_ioh_d = ioh_d;
132		t->t_ioh_c = ioh_c;
133		t->t_addr = regs[0].addr;
134		t->t_cmdbyte = KC8_CPU; /* Enable ports */
135		callout_init(&t->t_cleanup, 0);
136	}
137
138	t->t_sc = sc;
139	sc->id = t;
140
141	aprint_normal("\n");
142
143	/* Finish off the attach. */
144	pckbc_attach(sc);
145}
146
147static void
148pckbc_ofisa_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
149{
150	struct pckbc_ofisa_softc *osc = (void *) sc;
151	void *rv;
152
153	rv = isa_intr_establish(osc->sc_ic, osc->sc_intr[slot].irq, osc->sc_intr[slot].share,
154	    IPL_TTY, pckbcintr, sc);
155	if (rv == NULL) {
156		aprint_error_dev(sc->sc_dv,
157		    "unable to establish interrupt for %s slot\n",
158		    pckbc_slot_names[slot]);
159	} else {
160		aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n",
161		    osc->sc_intr[slot].irq, pckbc_slot_names[slot]);
162	}
163}
164