1 /* $OpenBSD: pckbc_isa.c,v 1.4 2004/04/02 04:39:51 deraadt Exp $ */
2 /* $NetBSD: pckbc_isa.c,v 1.2 2000/03/23 07:01:35 thorpej Exp $ */
3
4 /*
5 * Copyright (c) 1998
6 * Matthias Drochner. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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 the
15 * documentation and/or other materials provided with the distribution.
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 OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/kernel.h>
32 #include <sys/proc.h>
33 #include <sys/device.h>
34 #include <sys/malloc.h>
35 #include <sys/errno.h>
36 #include <sys/queue.h>
37 #include <sys/lock.h>
38
39 #include <machine/bus.h>
40
41 #include <dev/isa/isareg.h>
42 #include <dev/isa/isavar.h>
43
44 #include <dev/ic/i8042reg.h>
45 #include <dev/ic/pckbcvar.h>
46
47 int pckbc_isa_match(struct device *, void *, void *);
48 void pckbc_isa_attach(struct device *, struct device *, void *);
49
50 struct pckbc_isa_softc {
51 struct pckbc_softc sc_pckbc;
52
53 isa_chipset_tag_t sc_ic;
54 int sc_irq[PCKBC_NSLOTS];
55 };
56
57 struct cfattach pckbc_isa_ca = {
58 sizeof(struct pckbc_isa_softc), pckbc_isa_match, pckbc_isa_attach,
59 };
60
61 void pckbc_isa_intr_establish(struct pckbc_softc *, pckbc_slot_t);
62
63 int
pckbc_isa_match(parent,match,aux)64 pckbc_isa_match(parent, match, aux)
65 struct device *parent;
66 void *match;
67 void *aux;
68 {
69 struct isa_attach_args *ia = aux;
70 bus_space_tag_t iot = ia->ia_iot;
71 bus_space_handle_t ioh_d, ioh_c;
72 int res, ok = 1;
73
74 /* If values are hardwired to something that they can't be, punt. */
75 if ((ia->ia_iobase != IOBASEUNK && ia->ia_iobase != IO_KBD) ||
76 ia->ia_maddr != MADDRUNK ||
77 (ia->ia_irq != IRQUNK && ia->ia_irq != 1 /* XXX */) ||
78 ia->ia_drq != DRQUNK)
79 return (0);
80
81 if (pckbc_is_console(iot, IO_KBD) == 0) {
82 if (bus_space_map(iot, IO_KBD + KBDATAP, 1, 0, &ioh_d))
83 return (0);
84 if (bus_space_map(iot, IO_KBD + KBCMDP, 1, 0, &ioh_c)) {
85 bus_space_unmap(iot, ioh_d, 1);
86 return (0);
87 }
88
89 /* flush KBC */
90 (void) pckbc_poll_data1(iot, ioh_d, ioh_c, PCKBC_KBD_SLOT, 0);
91
92 /* KBC selftest */
93 if (pckbc_send_cmd(iot, ioh_c, KBC_SELFTEST) == 0) {
94 ok = 0;
95 goto out;
96 }
97 res = pckbc_poll_data1(iot, ioh_d, ioh_c, PCKBC_KBD_SLOT, 0);
98 if (res != 0x55) {
99 printf("kbc selftest: %x\n", res);
100 ok = 0;
101 }
102 out:
103 bus_space_unmap(iot, ioh_d, 1);
104 bus_space_unmap(iot, ioh_c, 1);
105 }
106
107 if (ok) {
108 ia->ia_iobase = IO_KBD;
109 ia->ia_iosize = 5;
110 ia->ia_msize = 0x0;
111 }
112 return (ok);
113 }
114
115 void
pckbc_isa_attach(parent,self,aux)116 pckbc_isa_attach(parent, self, aux)
117 struct device *parent, *self;
118 void *aux;
119 {
120 struct pckbc_isa_softc *isc = (void *)self;
121 struct pckbc_softc *sc = &isc->sc_pckbc;
122 struct isa_attach_args *ia = aux;
123 struct pckbc_internal *t;
124 bus_space_tag_t iot;
125 bus_space_handle_t ioh_d, ioh_c;
126
127 isc->sc_ic = ia->ia_ic;
128 iot = ia->ia_iot;
129
130 /*
131 * Set up IRQs for "normal" ISA.
132 *
133 * XXX The "aux" slot is different (9) on the Alpha AXP150 Jensen.
134 */
135 isc->sc_irq[PCKBC_KBD_SLOT] = 1;
136 isc->sc_irq[PCKBC_AUX_SLOT] = 12;
137
138 sc->intr_establish = pckbc_isa_intr_establish;
139
140 if (pckbc_is_console(iot, IO_KBD)) {
141 t = &pckbc_consdata;
142 ioh_d = t->t_ioh_d;
143 ioh_c = t->t_ioh_c;
144 pckbc_console_attached = 1;
145 /* t->t_cmdbyte was initialized by cnattach */
146 } else {
147 if (bus_space_map(iot, IO_KBD + KBDATAP, 1, 0, &ioh_d) ||
148 bus_space_map(iot, IO_KBD + KBCMDP, 1, 0, &ioh_c))
149 panic("pckbc_attach: couldn't map");
150
151 t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_WAITOK);
152 bzero(t, sizeof(struct pckbc_internal));
153 t->t_iot = iot;
154 t->t_ioh_d = ioh_d;
155 t->t_ioh_c = ioh_c;
156 t->t_addr = IO_KBD;
157 t->t_cmdbyte = KC8_CPU; /* Enable ports */
158 }
159
160 t->t_sc = sc;
161 sc->id = t;
162
163 printf("\n");
164
165 /* Finish off the attach. */
166 pckbc_attach(sc);
167 }
168
169 void
pckbc_isa_intr_establish(sc,slot)170 pckbc_isa_intr_establish(sc, slot)
171 struct pckbc_softc *sc;
172 pckbc_slot_t slot;
173 {
174 struct pckbc_isa_softc *isc = (void *) sc;
175 void *rv;
176
177 rv = isa_intr_establish(isc->sc_ic, isc->sc_irq[slot], IST_EDGE,
178 IPL_TTY, pckbcintr, sc, sc->sc_dv.dv_xname);
179 if (rv == NULL) {
180 printf("%s: unable to establish interrupt for %s slot\n",
181 sc->sc_dv.dv_xname, pckbc_slot_names[slot]);
182 } else {
183 printf("%s: using irq %d for %s slot\n", sc->sc_dv.dv_xname,
184 isc->sc_irq[slot], pckbc_slot_names[slot]);
185 }
186 }
187