1 | /* $NetBSD: pckbc_acpi.c,v 1.35 2016/10/18 22:08:30 jdolecek 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 | * ACPI attachment for the PC Keyboard Controller driver. |
34 | * |
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. |
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_acpi.c,v 1.35 2016/10/18 22:08:30 jdolecek Exp $" ); |
46 | |
47 | #include <sys/param.h> |
48 | #include <sys/callout.h> |
49 | #include <sys/device.h> |
50 | #include <sys/malloc.h> |
51 | #include <sys/systm.h> |
52 | |
53 | #include <dev/acpi/acpivar.h> |
54 | |
55 | #include <dev/isa/isareg.h> |
56 | |
57 | #include <dev/ic/i8042reg.h> |
58 | #include <dev/ic/pckbcvar.h> |
59 | |
60 | static int pckbc_acpi_match(device_t, cfdata_t, void *); |
61 | static void pckbc_acpi_attach(device_t, device_t, void *); |
62 | |
63 | struct pckbc_acpi_softc { |
64 | struct pckbc_softc sc_pckbc; |
65 | |
66 | isa_chipset_tag_t sc_ic; |
67 | int sc_irq; |
68 | int sc_ist; |
69 | pckbc_slot_t sc_slot; |
70 | }; |
71 | |
72 | /* Save first port: */ |
73 | static struct pckbc_acpi_softc *first; |
74 | |
75 | extern struct cfdriver pckbc_cd; |
76 | |
77 | CFATTACH_DECL_NEW(pckbc_acpi, sizeof(struct pckbc_acpi_softc), |
78 | pckbc_acpi_match, pckbc_acpi_attach, NULL, NULL); |
79 | |
80 | static void pckbc_acpi_intr_establish(struct pckbc_softc *, pckbc_slot_t); |
81 | static void pckbc_acpi_finish_attach(device_t); |
82 | |
83 | /* |
84 | * Supported Device IDs |
85 | */ |
86 | |
87 | static const char * const pckbc_acpi_ids_kbd[] = { |
88 | "PNP03??" , /* Standard PC KBD port */ |
89 | NULL |
90 | }; |
91 | |
92 | static const char * const pckbc_acpi_ids_ms[] = { |
93 | "PNP0F03" , |
94 | "PNP0F0E" , |
95 | "PNP0F12" , |
96 | "PNP0F13" , |
97 | "PNP0F19" , |
98 | "PNP0F1B" , |
99 | "PNP0F1C" , |
100 | "SYN0302" , |
101 | NULL |
102 | }; |
103 | |
104 | /* |
105 | * pckbc_acpi_match: autoconf(9) match routine |
106 | */ |
107 | static int |
108 | pckbc_acpi_match(device_t parent, cfdata_t match, void *aux) |
109 | { |
110 | struct acpi_attach_args *aa = aux; |
111 | int rv; |
112 | |
113 | if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) |
114 | return 0; |
115 | |
116 | rv = acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_kbd); |
117 | if (rv) |
118 | return rv; |
119 | rv = acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_ms); |
120 | if (rv) |
121 | return rv; |
122 | return 0; |
123 | } |
124 | |
125 | static void |
126 | pckbc_acpi_attach(device_t parent, device_t self, void *aux) |
127 | { |
128 | struct pckbc_acpi_softc *psc = device_private(self); |
129 | struct pckbc_softc *sc = &psc->sc_pckbc; |
130 | struct pckbc_internal *t; |
131 | struct acpi_attach_args *aa = aux; |
132 | bus_space_handle_t ioh_d, ioh_c; |
133 | struct acpi_resources res; |
134 | struct acpi_io *io0, *io1, *ioswap; |
135 | struct acpi_irq *irq; |
136 | ACPI_STATUS rv; |
137 | |
138 | sc->sc_dv = self; |
139 | psc->sc_ic = aa->aa_ic; |
140 | |
141 | if (acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_kbd)) { |
142 | psc->sc_slot = PCKBC_KBD_SLOT; |
143 | } else if (acpi_match_hid(aa->aa_node->ad_devinfo, pckbc_acpi_ids_ms)) { |
144 | psc->sc_slot = PCKBC_AUX_SLOT; |
145 | } else { |
146 | aprint_error(": unknown port!\n" ); |
147 | panic("pckbc_acpi_attach: impossible" ); |
148 | } |
149 | |
150 | aprint_normal(" (%s port)" , pckbc_slot_names[psc->sc_slot]); |
151 | |
152 | /* parse resources */ |
153 | rv = acpi_resource_parse(sc->sc_dv, aa->aa_node->ad_handle, "_CRS" , |
154 | &res, &acpi_resource_parse_ops_default); |
155 | if (ACPI_FAILURE(rv)) |
156 | return; |
157 | |
158 | /* find our IRQ */ |
159 | irq = acpi_res_irq(&res, 0); |
160 | if (irq == NULL) { |
161 | aprint_error_dev(self, "unable to find irq resource\n" ); |
162 | goto out; |
163 | } |
164 | psc->sc_irq = irq->ar_irq; |
165 | psc->sc_ist = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL; |
166 | |
167 | if (psc->sc_slot == PCKBC_KBD_SLOT) |
168 | first = psc; |
169 | |
170 | if ((!first || !first->sc_pckbc.id) && |
171 | (psc->sc_slot == PCKBC_KBD_SLOT)) { |
172 | |
173 | io0 = acpi_res_io(&res, 0); |
174 | io1 = acpi_res_io(&res, 1); |
175 | if (io0 == NULL || io1 == NULL) { |
176 | aprint_error_dev(self, |
177 | "unable to find i/o resources\n" ); |
178 | goto out; |
179 | } |
180 | |
181 | /* |
182 | * JDM: Some firmware doesn't report resources in the order we |
183 | * expect; sort IO resources here (lowest first) |
184 | */ |
185 | if (io0->ar_base > io1->ar_base) { |
186 | ioswap = io0; |
187 | io0 = io1; |
188 | io1 = ioswap; |
189 | } |
190 | |
191 | if (pckbc_is_console(aa->aa_iot, io0->ar_base)) { |
192 | t = &pckbc_consdata; |
193 | ioh_d = t->t_ioh_d; |
194 | ioh_c = t->t_ioh_c; |
195 | pckbc_console_attached = 1; |
196 | /* t->t_cmdbyte was initialized by cnattach */ |
197 | } else { |
198 | if (bus_space_map(aa->aa_iot, io0->ar_base, |
199 | io0->ar_length, 0, &ioh_d) || |
200 | bus_space_map(aa->aa_iot, io1->ar_base, |
201 | io1->ar_length, 0, &ioh_c)) { |
202 | aprint_error_dev(self, |
203 | "unable to map registers\n" ); |
204 | goto out; |
205 | } |
206 | |
207 | t = malloc(sizeof(struct pckbc_internal), |
208 | M_DEVBUF, M_WAITOK|M_ZERO); |
209 | t->t_iot = aa->aa_iot; |
210 | t->t_ioh_d = ioh_d; |
211 | t->t_ioh_c = ioh_c; |
212 | t->t_addr = io0->ar_base; |
213 | t->t_cmdbyte = KC8_CPU; /* Enable ports */ |
214 | callout_init(&t->t_cleanup, 0); |
215 | } |
216 | |
217 | t->t_sc = &first->sc_pckbc; |
218 | first->sc_pckbc.id = t; |
219 | |
220 | if (!pmf_device_register(self, NULL, pckbc_resume)) |
221 | aprint_error_dev(self, |
222 | "couldn't establish power handler\n" ); |
223 | |
224 | first->sc_pckbc.intr_establish = pckbc_acpi_intr_establish; |
225 | config_defer(first->sc_pckbc.sc_dv, pckbc_acpi_finish_attach); |
226 | } |
227 | |
228 | out: |
229 | if (!pmf_device_register(self, NULL, NULL)) |
230 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
231 | acpi_resource_cleanup(&res); |
232 | } |
233 | |
234 | static void |
235 | pckbc_acpi_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot) |
236 | { |
237 | struct pckbc_acpi_softc *psc; |
238 | isa_chipset_tag_t ic = NULL; |
239 | void *rv = NULL; |
240 | int irq = 0, ist = 0; /* XXX: gcc */ |
241 | int i; |
242 | |
243 | /* |
244 | * Note we're always called with sc == first. |
245 | */ |
246 | for (i = 0; i < pckbc_cd.cd_ndevs; i++) { |
247 | psc = device_lookup_private(&pckbc_cd, i); |
248 | if (psc && psc->sc_slot == slot) { |
249 | irq = psc->sc_irq; |
250 | ist = psc->sc_ist; |
251 | ic = psc->sc_ic; |
252 | break; |
253 | } |
254 | } |
255 | if (i < pckbc_cd.cd_ndevs) { |
256 | char intr_xname[64]; |
257 | snprintf(intr_xname, sizeof(intr_xname), "%s %s" , |
258 | device_xname(psc->sc_pckbc.sc_dv), pckbc_slot_names[slot]); |
259 | |
260 | rv = isa_intr_establish_xname(ic, irq, ist, IPL_TTY, pckbcintr, |
261 | sc, intr_xname); |
262 | } |
263 | if (rv == NULL) { |
264 | aprint_error_dev(sc->sc_dv, |
265 | "unable to establish interrupt for %s slot\n" , |
266 | pckbc_slot_names[slot]); |
267 | } else { |
268 | aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n" , |
269 | irq, pckbc_slot_names[slot]); |
270 | } |
271 | } |
272 | |
273 | static void |
274 | pckbc_acpi_finish_attach(device_t dv) |
275 | { |
276 | |
277 | pckbc_attach(device_private(dv)); |
278 | } |
279 | |