pckbc_acpi.c revision 1.34
1/* $NetBSD: pckbc_acpi.c,v 1.34 2013/10/17 21:19:03 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 * 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 1.34 2013/10/17 21:19:03 christos 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 60static int pckbc_acpi_match(device_t, cfdata_t, void *); 61static void pckbc_acpi_attach(device_t, device_t, void *); 62 63struct 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: */ 73static struct pckbc_acpi_softc *first; 74 75extern struct cfdriver pckbc_cd; 76 77CFATTACH_DECL_NEW(pckbc_acpi, sizeof(struct pckbc_acpi_softc), 78 pckbc_acpi_match, pckbc_acpi_attach, NULL, NULL); 79 80static void pckbc_acpi_intr_establish(struct pckbc_softc *, pckbc_slot_t); 81static void pckbc_acpi_finish_attach(device_t); 82 83/* 84 * Supported Device IDs 85 */ 86 87static const char * const pckbc_acpi_ids_kbd[] = { 88 "PNP03??", /* Standard PC KBD port */ 89 NULL 90}; 91 92static 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 */ 107static int 108pckbc_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 125static void 126pckbc_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 228out: 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 234static void 235pckbc_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 rv = isa_intr_establish(ic, irq, ist, IPL_TTY, pckbcintr, sc); 257 if (rv == NULL) { 258 aprint_error_dev(sc->sc_dv, 259 "unable to establish interrupt for %s slot\n", 260 pckbc_slot_names[slot]); 261 } else { 262 aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n", 263 irq, pckbc_slot_names[slot]); 264 } 265} 266 267static void 268pckbc_acpi_finish_attach(device_t dv) 269{ 270 271 pckbc_attach(device_private(dv)); 272} 273