1 /* $NetBSD: pckbc_pnpbios.c,v 1.18 2014/03/23 02:57:58 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2000 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 /*
33 * PNPBIOS attachment for the PC Keyboard Controller driver.
34 *
35 * This is a little wonky. The keyboard controller actually
36 * has 2 PNPBIOS nodes: one for the controller and the keyboard
37 * interrupt, and one for the aux port (mouse) interrupt.
38 *
39 * For this reason, we actually attach *two* instances of this
40 * driver. After both of them have been found, then we attach
41 * sub-devices.
42 */
43
44 #include <sys/cdefs.h>
45 __KERNEL_RCSID(0, "$NetBSD: pckbc_pnpbios.c,v 1.18 2014/03/23 02:57:58 christos Exp $");
46
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/proc.h>
51 #include <sys/device.h>
52 #include <sys/malloc.h>
53 #include <sys/errno.h>
54 #include <sys/queue.h>
55 #include <sys/bus.h>
56
57 #include <dev/isa/isareg.h>
58 #include <dev/isa/isavar.h>
59
60 #include <dev/ic/i8042reg.h>
61 #include <dev/ic/pckbcvar.h>
62
63 #include <i386/pnpbios/pnpbiosvar.h>
64
65 int pckbc_pnpbios_match(device_t, cfdata_t, void *);
66 void pckbc_pnpbios_attach(device_t, device_t, void *);
67
68 struct pckbc_pnpbios_softc {
69 struct pckbc_softc sc_pckbc;
70
71 isa_chipset_tag_t sc_ic;
72 int sc_irq;
73 int sc_ist;
74 pckbc_slot_t sc_slot;
75 };
76
77 /* Save first port: */
78 static struct pckbc_pnpbios_softc *first;
79
80 extern struct cfdriver pckbc_cd;
81
82 CFATTACH_DECL_NEW(pckbc_pnpbios, sizeof(struct pckbc_pnpbios_softc),
83 pckbc_pnpbios_match, pckbc_pnpbios_attach, NULL, NULL);
84
85 void pckbc_pnpbios_intr_establish(struct pckbc_softc *, pckbc_slot_t);
86 static void pckbc_pnpbios_finish_attach(device_t);
87
88 int
pckbc_pnpbios_match(device_t parent,cfdata_t match,void * aux)89 pckbc_pnpbios_match(device_t parent, cfdata_t match, void *aux)
90 {
91 struct pnpbiosdev_attach_args *aa = aux;
92
93 if (strcmp(aa->idstr, "PNP0303") == 0 ||
94 strcmp(aa->idstr, "PNP0320") == 0) /* Japanese 106 */
95 return (1); /* plus more? */
96 if (strcmp(aa->idstr, "PNP0F13") == 0)
97 return (1);
98
99 return (0);
100 }
101
102 void
pckbc_pnpbios_attach(device_t parent,device_t self,void * aux)103 pckbc_pnpbios_attach(device_t parent, device_t self, void *aux)
104 {
105 struct pckbc_pnpbios_softc *psc = device_private(self);
106 struct pckbc_softc *sc = &psc->sc_pckbc;
107 struct pckbc_internal *t;
108 struct pnpbiosdev_attach_args *aa = aux;
109 bus_space_tag_t iot;
110 bus_space_handle_t ioh_d, ioh_c;
111 int iobase;
112
113 sc->sc_dv = self;
114 if (strncmp(aa->idstr, "PNP03", 5) == 0) {
115 psc->sc_slot = PCKBC_KBD_SLOT;
116 } else if (strcmp(aa->idstr, "PNP0F13") == 0) {
117 psc->sc_slot = PCKBC_AUX_SLOT;
118 } else {
119 aprint_error(": unknown port!\n");
120 panic("pckbc_pnpbios_attach: impossible");
121 }
122
123 aprint_normal(": %s port\n", pckbc_slot_names[psc->sc_slot]);
124
125 if (pnpbios_getirqnum(aa->pbt, aa->resc, 0, &psc->sc_irq,
126 &psc->sc_ist) != 0) {
127 aprint_error_dev(self, "unable to get IRQ number or type\n");
128 return;
129 }
130
131 psc->sc_ic = aa->ic;
132
133 if (!first)
134 first = psc;
135
136 if (!first->sc_pckbc.id) {
137
138 if (pnpbios_getiobase(aa->pbt, aa->resc, 0, &iot, &iobase))
139 return;
140
141 if (pckbc_is_console(iot, iobase)) {
142 t = &pckbc_consdata;
143 ioh_d = t->t_ioh_d;
144 ioh_c = t->t_ioh_c;
145 pckbc_console_attached = 1;
146 /* t->t_cmdbyte was initialized by cnattach */
147 } else {
148 if (pnpbios_io_map(aa->pbt, aa->resc, 0,
149 &iot, &ioh_d) ||
150 pnpbios_io_map(aa->pbt, aa->resc, 1,
151 &iot, &ioh_c))
152 panic("pckbc_pnpbios_attach: couldn't map");
153
154 t = malloc(sizeof(struct pckbc_internal),
155 M_DEVBUF, M_WAITOK);
156 memset(t, 0, sizeof(*t));
157 t->t_iot = iot;
158 t->t_ioh_d = ioh_d;
159 t->t_ioh_c = ioh_c;
160 t->t_addr = iobase;
161 t->t_cmdbyte = KC8_CPU; /* Enable ports */
162 callout_init(&t->t_cleanup, 0);
163 }
164
165 t->t_sc = &first->sc_pckbc;
166 first->sc_pckbc.id = t;
167
168 first->sc_pckbc.intr_establish = pckbc_pnpbios_intr_establish;
169 config_defer(first->sc_pckbc.sc_dv,
170 pckbc_pnpbios_finish_attach);
171 }
172 }
173
174 static void
pckbc_pnpbios_finish_attach(device_t dv)175 pckbc_pnpbios_finish_attach(device_t dv)
176 {
177
178 pckbc_attach(device_private(dv));
179 }
180
181 void
pckbc_pnpbios_intr_establish(struct pckbc_softc * sc,pckbc_slot_t slot)182 pckbc_pnpbios_intr_establish(struct pckbc_softc *sc,
183 pckbc_slot_t slot)
184 {
185 struct pckbc_pnpbios_softc *psc;
186 isa_chipset_tag_t ic = NULL;
187 void *rv = NULL;
188 int irq, ist;
189 int i;
190
191 /*
192 * Note we're always called with sc == first.
193 */
194 for (i = 0; i < pckbc_cd.cd_ndevs; i++) {
195 psc = device_lookup_private(&pckbc_cd, i);
196 if (psc && psc->sc_slot == slot) {
197 irq = psc->sc_irq;
198 ist = psc->sc_ist;
199 ic = psc->sc_ic;
200 break;
201 }
202 }
203 if (i < pckbc_cd.cd_ndevs)
204 rv = isa_intr_establish(ic, irq, ist, IPL_TTY, pckbcintr, sc);
205 if (rv == NULL) {
206 aprint_error_dev(sc->sc_dv,
207 "unable to establish interrupt for %s slot\n",
208 pckbc_slot_names[slot]);
209 } else {
210 aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n",
211 irq, pckbc_slot_names[slot]);
212 }
213 }
214