1 /* $NetBSD: pckbc_acpi.c,v 1.30 2008/09/16 11:24:55 pgoyette 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 1.30 2008/09/16 11:24:55 pgoyette 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_naive("\n"); 159 aprint_normal(": %s port\n", pckbc_slot_names[psc->sc_slot]); 160 161 /* parse resources */ 162 rv = acpi_resource_parse(sc->sc_dv, aa->aa_node->ad_handle, "_CRS", 163 &res, &acpi_resource_parse_ops_default); 164 if (ACPI_FAILURE(rv)) 165 return; 166 167 /* find our IRQ */ 168 irq = acpi_res_irq(&res, 0); 169 if (irq == NULL) { 170 aprint_error_dev(self, "unable to find irq resource\n"); 171 goto out; 172 } 173 psc->sc_irq = irq->ar_irq; 174 psc->sc_ist = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL; 175 176 if (psc->sc_slot == PCKBC_KBD_SLOT) 177 first = psc; 178 179 if ((!first || !first->sc_pckbc.id) && 180 (psc->sc_slot == PCKBC_KBD_SLOT)) { 181 182 io0 = acpi_res_io(&res, 0); 183 io1 = acpi_res_io(&res, 1); 184 if (io0 == NULL || io1 == NULL) { 185 aprint_error_dev(self, 186 "unable to find i/o resources\n"); 187 goto out; 188 } 189 190 /* 191 * JDM: Some firmware doesn't report resources in the order we 192 * expect; sort IO resources here (lowest first) 193 */ 194 if (io0->ar_base > io1->ar_base) { 195 ioswap = io0; 196 io0 = io1; 197 io1 = ioswap; 198 } 199 200 if (pckbc_is_console(aa->aa_iot, io0->ar_base)) { 201 t = &pckbc_consdata; 202 ioh_d = t->t_ioh_d; 203 ioh_c = t->t_ioh_c; 204 pckbc_console_attached = 1; 205 /* t->t_cmdbyte was initialized by cnattach */ 206 } else { 207 if (bus_space_map(aa->aa_iot, io0->ar_base, 208 io0->ar_length, 0, &ioh_d) || 209 bus_space_map(aa->aa_iot, io1->ar_base, 210 io1->ar_length, 0, &ioh_c)) 211 panic("pckbc_acpi_attach: couldn't map"); 212 213 t = malloc(sizeof(struct pckbc_internal), 214 M_DEVBUF, M_WAITOK|M_ZERO); 215 t->t_iot = aa->aa_iot; 216 t->t_ioh_d = ioh_d; 217 t->t_ioh_c = ioh_c; 218 t->t_addr = io0->ar_base; 219 t->t_cmdbyte = KC8_CPU; /* Enable ports */ 220 callout_init(&t->t_cleanup, 0); 221 } 222 223 t->t_sc = &first->sc_pckbc; 224 first->sc_pckbc.id = t; 225 226 if (!pmf_device_register(self, NULL, pckbc_resume)) 227 aprint_error_dev(self, 228 "couldn't establish power handler\n"); 229 230 first->sc_pckbc.intr_establish = pckbc_acpi_intr_establish; 231 config_defer(first->sc_pckbc.sc_dv, pckbc_acpi_finish_attach); 232 } else if (!pmf_device_register(self, NULL, NULL)) 233 aprint_error_dev(self, "couldn't establish power handler\n"); 234 out: 235 acpi_resource_cleanup(&res); 236 } 237 238 static void 239 pckbc_acpi_intr_establish(struct pckbc_softc *sc, pckbc_slot_t slot) 240 { 241 struct pckbc_acpi_softc *psc; 242 isa_chipset_tag_t ic = NULL; 243 void *rv = NULL; 244 int irq = 0, ist = 0; /* XXX: gcc */ 245 int i; 246 247 /* 248 * Note we're always called with sc == first. 249 */ 250 for (i = 0; i < pckbc_cd.cd_ndevs; i++) { 251 psc = device_lookup_private(&pckbc_cd, i); 252 if (psc && psc->sc_slot == slot) { 253 irq = psc->sc_irq; 254 ist = psc->sc_ist; 255 ic = psc->sc_ic; 256 break; 257 } 258 } 259 if (i < pckbc_cd.cd_ndevs) 260 rv = isa_intr_establish(ic, irq, ist, IPL_TTY, pckbcintr, sc); 261 if (rv == NULL) { 262 aprint_error_dev(sc->sc_dv, 263 "unable to establish interrupt for %s slot\n", 264 pckbc_slot_names[slot]); 265 } else { 266 aprint_normal_dev(sc->sc_dv, "using irq %d for %s slot\n", 267 irq, pckbc_slot_names[slot]); 268 } 269 } 270 271 static void 272 pckbc_acpi_finish_attach(device_t dv) 273 { 274 275 pckbc_attach(device_private(dv)); 276 } 277