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[netbsd-mini2440.git] / sys / dev / acpi / pckbc_acpi.c
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1 /* $NetBSD: pckbc_acpi.c,v 1.31 2009/02/17 12:46:01 jmcneill Exp $ */
3 /*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
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.
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.
33 * ACPI attachment for the PC Keyboard Controller driver.
35 * This is a little wonky. The keyboard controller actually
36 * has 2 ACPI nodes: one for the controller and the keyboard
37 * interrupt, and one for the aux port (mouse) interrupt.
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.
44 #include <sys/cdefs.h>
45 __KERNEL_RCSID(0, "$NetBSD: pckbc_acpi.c,v 1.31 2009/02/17 12:46:01 jmcneill Exp $");
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>
57 #include <dev/isa/isareg.h>
58 #include <dev/isa/isavar.h>
60 #include <dev/ic/i8042reg.h>
61 #include <dev/ic/pckbcvar.h>
63 #include <dev/acpi/acpivar.h>
65 static int pckbc_acpi_match(device_t, cfdata_t, void *);
66 static void pckbc_acpi_attach(device_t, device_t, void *);
68 struct pckbc_acpi_softc {
69 struct pckbc_softc sc_pckbc;
71 isa_chipset_tag_t sc_ic;
72 int sc_irq;
73 int sc_ist;
74 pckbc_slot_t sc_slot;
77 /* Save first port: */
78 static struct pckbc_acpi_softc *first;
80 extern struct cfdriver pckbc_cd;
82 CFATTACH_DECL_NEW(pckbc_acpi, sizeof(struct pckbc_acpi_softc),
83 pckbc_acpi_match, pckbc_acpi_attach, NULL, NULL);
85 static void pckbc_acpi_intr_establish(struct pckbc_softc *, pckbc_slot_t);
86 static void pckbc_acpi_finish_attach(device_t);
89 * Supported Device IDs
92 static const char * const pckbc_acpi_ids_kbd[] = {
93 "PNP03??", /* Standard PC KBD port */
94 NULL
97 static const char * const pckbc_acpi_ids_ms[] = {
98 "PNP0F03",
99 "PNP0F0E",
100 "PNP0F12",
101 "PNP0F13",
102 "PNP0F19",
103 "PNP0F1B",
104 "PNP0F1C",
105 "SYN0302",
106 NULL
110 * pckbc_acpi_match: autoconf(9) match routine
112 static int
113 pckbc_acpi_match(device_t parent, cfdata_t match, void *aux)
115 struct acpi_attach_args *aa = aux;
116 int rv;
118 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
119 return 0;
121 rv = acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_kbd);
122 if (rv)
123 return rv;
124 rv = acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_ms);
125 if (rv)
126 return rv;
127 return 0;
130 static void
131 pckbc_acpi_attach(device_t parent, device_t self, void *aux)
133 struct pckbc_acpi_softc *psc = device_private(self);
134 struct pckbc_softc *sc = &psc->sc_pckbc;
135 struct pckbc_internal *t;
136 struct acpi_attach_args *aa = aux;
137 bus_space_handle_t ioh_d, ioh_c;
138 pckbc_slot_t peer;
139 struct acpi_resources res;
140 struct acpi_io *io0, *io1, *ioswap;
141 struct acpi_irq *irq;
142 ACPI_STATUS rv;
144 sc->sc_dv = self;
145 psc->sc_ic = aa->aa_ic;
147 if (acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_kbd)) {
148 psc->sc_slot = PCKBC_KBD_SLOT;
149 peer = PCKBC_AUX_SLOT;
150 } else if (acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_ms)) {
151 psc->sc_slot = PCKBC_AUX_SLOT;
152 peer = PCKBC_KBD_SLOT;
153 } else {
154 aprint_error(": unknown port!\n");
155 panic("pckbc_acpi_attach: impossible");
158 aprint_normal(" (%s port)", pckbc_slot_names[psc->sc_slot]);
160 /* parse resources */
161 rv = acpi_resource_parse(sc->sc_dv, aa->aa_node->ad_handle, "_CRS",
162 &res, &acpi_resource_parse_ops_default);
163 if (ACPI_FAILURE(rv))
164 return;
166 /* find our IRQ */
167 irq = acpi_res_irq(&res, 0);
168 if (irq == NULL) {
169 aprint_error_dev(self, "unable to find irq resource\n");
170 goto out;
172 psc->sc_irq = irq->ar_irq;
173 psc->sc_ist = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL;
175 if (psc->sc_slot == PCKBC_KBD_SLOT)
176 first = psc;
178 if ((!first || !first->sc_pckbc.id) &&
179 (psc->sc_slot == PCKBC_KBD_SLOT)) {
181 io0 = acpi_res_io(&res, 0);
182 io1 = acpi_res_io(&res, 1);
183 if (io0 == NULL || io1 == NULL) {
184 aprint_error_dev(self,
185 "unable to find i/o resources\n");
186 goto out;
190 * JDM: Some firmware doesn't report resources in the order we
191 * expect; sort IO resources here (lowest first)
193 if (io0->ar_base > io1->ar_base) {
194 ioswap = io0;
195 io0 = io1;
196 io1 = ioswap;
199 if (pckbc_is_console(aa->aa_iot, io0->ar_base)) {
200 t = &pckbc_consdata;
201 ioh_d = t->t_ioh_d;
202 ioh_c = t->t_ioh_c;
203 pckbc_console_attached = 1;
204 /* t->t_cmdbyte was initialized by cnattach */
205 } else {
206 if (bus_space_map(aa->aa_iot, io0->ar_base,
207 io0->ar_length, 0, &ioh_d) ||
208 bus_space_map(aa->aa_iot, io1->ar_base,
209 io1->ar_length, 0, &ioh_c)) {
210 aprint_error_dev(self,
211 "unable to map registers\n");
212 goto out;
215 t = malloc(sizeof(struct pckbc_internal),
216 M_DEVBUF, M_WAITOK|M_ZERO);
217 t->t_iot = aa->aa_iot;
218 t->t_ioh_d = ioh_d;
219 t->t_ioh_c = ioh_c;
220 t->t_addr = io0->ar_base;
221 t->t_cmdbyte = KC8_CPU; /* Enable ports */
222 callout_init(&t->t_cleanup, 0);
225 t->t_sc = &first->sc_pckbc;
226 first->sc_pckbc.id = t;
228 if (!pmf_device_register(self, NULL, pckbc_resume))
229 aprint_error_dev(self,
230 "couldn't establish power handler\n");
232 first->sc_pckbc.intr_establish = pckbc_acpi_intr_establish;
233 config_defer(first->sc_pckbc.sc_dv, pckbc_acpi_finish_attach);
236 out:
237 if (!pmf_device_register(self, NULL, NULL))
238 aprint_error_dev(self, "couldn't establish power handler\n");
239 acpi_resource_cleanup(&res);
242 static void
243 pckbc_acpi_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot)
245 struct pckbc_acpi_softc *psc;
246 isa_chipset_tag_t ic = NULL;
247 void *rv = NULL;
248 int irq = 0, ist = 0; /* XXX: gcc */
249 int i;
252 * Note we're always called with sc == first.
254 for (i = 0; i < pckbc_cd.cd_ndevs; i++) {
255 psc = device_lookup_private(&pckbc_cd, i);
256 if (psc && psc->sc_slot == slot) {
257 irq = psc->sc_irq;
258 ist = psc->sc_ist;
259 ic = psc->sc_ic;
260 break;
263 if (i < pckbc_cd.cd_ndevs)
264 rv = isa_intr_establish(ic, irq, ist, IPL_TTY, pckbcintr, sc);
265 if (rv == NULL) {
266 aprint_error_dev(sc->sc_dv,
267 "unable to establish interrupt for %s slot\n",
268 pckbc_slot_names[slot]);
269 } else {
270 aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n",
271 irq, pckbc_slot_names[slot]);
275 static void
276 pckbc_acpi_finish_attach(device_t dv)
279 pckbc_attach(device_private(dv));