1 /* $NetBSD: pckbc_acpi.c,v 1.32 2009/08/29 19:17:44 jmcneill 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 1.32 2009/08/29 19:17:44 jmcneill 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 <dev/acpi/acpivar.h> 64 65 static int pckbc_acpi_match(device_t, cfdata_t, void *); 66 static void pckbc_acpi_attach(device_t, device_t, void *); 67 68 struct pckbc_acpi_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_acpi_softc *first; 79 80 extern struct cfdriver pckbc_cd; 81 82 CFATTACH_DECL_NEW(pckbc_acpi, sizeof(struct pckbc_acpi_softc), 83 pckbc_acpi_match, pckbc_acpi_attach, NULL, NULL); 84 85 static void pckbc_acpi_intr_establish(struct pckbc_softc *, pckbc_slot_t); 86 static void pckbc_acpi_finish_attach(device_t); 87 88 /* 89 * Supported Device IDs 90 */ 91 92 static const char * const pckbc_acpi_ids_kbd[] = { 93 "PNP03??", /* Standard PC KBD port */ 94 NULL 95 }; 96 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 107 }; 108 109 /* 110 * pckbc_acpi_match: autoconf(9) match routine 111 */ 112 static int 113 pckbc_acpi_match(device_t parent, cfdata_t match, void *aux) 114 { 115 struct acpi_attach_args *aa = aux; 116 int rv; 117 118 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 119 return 0; 120 121 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; 128 } 129 130 static void 131 pckbc_acpi_attach(device_t parent, device_t self, void *aux) 132 { 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; 143 144 sc->sc_dv = self; 145 psc->sc_ic = aa->aa_ic; 146 147 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"); 156 } 157 158 aprint_normal(" (%s port)", pckbc_slot_names[psc->sc_slot]); 159 160 /* 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; 165 166 /* 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; 171 } 172 psc->sc_irq = irq->ar_irq; 173 psc->sc_ist = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL; 174 175 if (psc->sc_slot == PCKBC_KBD_SLOT) 176 first = psc; 177 178 if ((!first || !first->sc_pckbc.id) && 179 (psc->sc_slot == PCKBC_KBD_SLOT)) { 180 181 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; 187 } 188 189 /* 190 * JDM: Some firmware doesn't report resources in the order we 191 * expect; sort IO resources here (lowest first) 192 */ 193 if (io0->ar_base > io1->ar_base) { 194 ioswap = io0; 195 io0 = io1; 196 io1 = ioswap; 197 } 198 199 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; 213 } 214 215 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); 223 } 224 225 t->t_sc = &first->sc_pckbc; 226 first->sc_pckbc.id = t; 227 228 if (!pmf_device_register(self, NULL, pckbc_resume)) 229 aprint_error_dev(self, 230 "couldn't establish power handler\n"); 231 232 first->sc_pckbc.intr_establish = pckbc_acpi_intr_establish; 233 config_defer(first->sc_pckbc.sc_dv, pckbc_acpi_finish_attach); 234 } 235 236 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); 240 } 241 242 static void 243 pckbc_acpi_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot) 244 { 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; 250 251 /* 252 * Note we're always called with sc == first. 253 */ 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; 261 } 262 } 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]); 272 } 273 } 274 275 static void 276 pckbc_acpi_finish_attach(device_t dv) 277 { 278 279 pckbc_attach(device_private(dv)); 280 } 281