atkbdc_subr.c revision 58271
1/*- 2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer as 10 * the first lines of this file unmodified. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/dev/atkbdc/atkbdc_subr.c 58271 2000-03-19 03:25:13Z yokota $ 27 */ 28 29#include "opt_kbd.h" 30 31#include <sys/param.h> 32#include <sys/systm.h> 33#include <sys/kernel.h> 34#include <sys/bus.h> 35#include <sys/malloc.h> 36#include <machine/bus_pio.h> 37#include <machine/bus.h> 38#include <machine/resource.h> 39#include <sys/rman.h> 40 41#include <dev/kbd/atkbdcreg.h> 42 43#include <isa/isareg.h> 44#include <isa/isavar.h> 45 46MALLOC_DEFINE(M_ATKBDDEV, "atkbddev", "AT Keyboard device"); 47 48/* children */ 49typedef struct atkbdc_device { 50 int flags; /* configuration flags */ 51 int port; /* port number (same as the controller's) */ 52 int irq; /* ISA IRQ mask */ 53} atkbdc_device_t; 54 55/* kbdc */ 56devclass_t atkbdc_devclass; 57 58static int atkbdc_probe(device_t dev); 59static int atkbdc_attach(device_t dev); 60static int atkbdc_print_child(device_t bus, device_t dev); 61static int atkbdc_read_ivar(device_t bus, device_t dev, int index, 62 u_long *val); 63static int atkbdc_write_ivar(device_t bus, device_t dev, int index, 64 u_long val); 65 66static device_method_t atkbdc_methods[] = { 67 DEVMETHOD(device_probe, atkbdc_probe), 68 DEVMETHOD(device_attach, atkbdc_attach), 69 DEVMETHOD(device_suspend, bus_generic_suspend), 70 DEVMETHOD(device_resume, bus_generic_resume), 71 72 DEVMETHOD(bus_print_child, atkbdc_print_child), 73 DEVMETHOD(bus_read_ivar, atkbdc_read_ivar), 74 DEVMETHOD(bus_write_ivar, atkbdc_write_ivar), 75 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 76 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 77 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 78 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 79 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 80 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 81 82 { 0, 0 } 83}; 84 85static driver_t atkbdc_driver = { 86 ATKBDC_DRIVER_NAME, 87 atkbdc_methods, 88 sizeof(atkbdc_softc_t *), 89}; 90 91static struct isa_pnp_id atkbdc_ids[] = { 92 { 0x0303d041, "Keyboard controller (i8042)" }, /* PNP0303 */ 93 { 0 } 94}; 95 96static int 97atkbdc_probe(device_t dev) 98{ 99 struct resource *port0; 100 struct resource *port1; 101 int error; 102 int rid; 103 104 /* check PnP IDs */ 105 if (ISA_PNP_PROBE(device_get_parent(dev), dev, atkbdc_ids) == ENXIO) 106 return ENXIO; 107 108 device_set_desc(dev, "Keyboard controller (i8042)"); 109 110 rid = 0; 111 port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, 112 RF_ACTIVE); 113 if (port0 == NULL) 114 return ENXIO; 115 /* XXX */ 116 if (bus_get_resource_start(dev, SYS_RES_IOPORT, 1) <= 0) { 117 bus_set_resource(dev, SYS_RES_IOPORT, 1, 118 rman_get_start(port0) + KBD_STATUS_PORT, 1); 119 } 120 rid = 1; 121 port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, 122 RF_ACTIVE); 123 if (port1 == NULL) { 124 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0); 125 return ENXIO; 126 } 127 128 error = atkbdc_probe_unit(device_get_unit(dev), port0, port1); 129 130 bus_release_resource(dev, SYS_RES_IOPORT, 0, port0); 131 bus_release_resource(dev, SYS_RES_IOPORT, 1, port1); 132 133 return error; 134} 135 136static void 137atkbdc_add_device(device_t dev, const char *name, int unit) 138{ 139 atkbdc_device_t *kdev; 140 device_t child; 141 int t; 142 143 if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0) 144 return; 145 146 kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT); 147 if (!kdev) 148 return; 149 bzero(kdev, sizeof *kdev); 150 151 if (resource_int_value(name, unit, "irq", &t) == 0) 152 kdev->irq = t; 153 else 154 kdev->irq = -1; 155 156 if (resource_int_value(name, unit, "flags", &t) == 0) 157 kdev->flags = t; 158 else 159 kdev->flags = 0; 160 161 child = device_add_child(dev, name, unit); 162 device_set_ivars(child, kdev); 163} 164 165static int 166atkbdc_attach(device_t dev) 167{ 168 atkbdc_softc_t *sc; 169 int unit; 170 int error; 171 int rid; 172 int i; 173 174 unit = device_get_unit(dev); 175 sc = *(atkbdc_softc_t **)device_get_softc(dev); 176 if (sc == NULL) { 177 /* 178 * We have to maintain two copies of the kbdc_softc struct, 179 * as the low-level console needs to have access to the 180 * keyboard controller before kbdc is probed and attached. 181 * kbdc_soft[] contains the default entry for that purpose. 182 * See atkbdc.c. XXX 183 */ 184 sc = atkbdc_get_softc(unit); 185 if (sc == NULL) 186 return ENOMEM; 187 } 188 189 rid = 0; 190 sc->port0 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, 191 RF_ACTIVE); 192 if (sc->port0 == NULL) 193 return ENXIO; 194 rid = 1; 195 sc->port1 = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1, 196 RF_ACTIVE); 197 if (sc->port1 == NULL) { 198 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0); 199 return ENXIO; 200 } 201 202 error = atkbdc_attach_unit(unit, sc, sc->port0, sc->port1); 203 if (error) { 204 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->port0); 205 bus_release_resource(dev, SYS_RES_IOPORT, 1, sc->port1); 206 return error; 207 } 208 *(atkbdc_softc_t **)device_get_softc(dev) = sc; 209 210 /* 211 * Add all devices configured to be attached to atkbdc0. 212 */ 213 for (i = resource_query_string(-1, "at", "atkbdc0"); 214 i != -1; 215 i = resource_query_string(i, "at", "atkbdc0")) { 216 atkbdc_add_device(dev, resource_query_name(i), 217 resource_query_unit(i)); 218 } 219 220 /* 221 * and atkbdc? 222 */ 223 for (i = resource_query_string(-1, "at", "atkbdc"); 224 i != -1; 225 i = resource_query_string(i, "at", "atkbdc")) { 226 atkbdc_add_device(dev, resource_query_name(i), 227 resource_query_unit(i)); 228 } 229 230 bus_generic_attach(dev); 231 232 return 0; 233} 234 235static int 236atkbdc_print_child(device_t bus, device_t dev) 237{ 238 atkbdc_device_t *kbdcdev; 239 int retval = 0; 240 241 kbdcdev = (atkbdc_device_t *)device_get_ivars(dev); 242 243 retval += bus_print_child_header(bus, dev); 244 if (kbdcdev->flags != 0) 245 retval += printf(" flags 0x%x", kbdcdev->flags); 246 if (kbdcdev->irq != -1) 247 retval += printf(" irq %d", kbdcdev->irq); 248 retval += bus_print_child_footer(bus, dev); 249 250 return (retval); 251} 252 253static int 254atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val) 255{ 256 atkbdc_device_t *ivar; 257 258 ivar = (atkbdc_device_t *)device_get_ivars(dev); 259 switch (index) { 260 case KBDC_IVAR_PORT: 261 *val = (u_long)ivar->port; 262 break; 263 case KBDC_IVAR_IRQ: 264 *val = (u_long)ivar->irq; 265 break; 266 case KBDC_IVAR_FLAGS: 267 *val = (u_long)ivar->flags; 268 break; 269 default: 270 return ENOENT; 271 } 272 return 0; 273} 274 275static int 276atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val) 277{ 278 atkbdc_device_t *ivar; 279 280 ivar = (atkbdc_device_t *)device_get_ivars(dev); 281 switch (index) { 282 case KBDC_IVAR_PORT: 283 ivar->port = (int)val; 284 break; 285 case KBDC_IVAR_IRQ: 286 ivar->irq = (int)val; 287 break; 288 case KBDC_IVAR_FLAGS: 289 ivar->flags = (int)val; 290 break; 291 default: 292 return ENOENT; 293 } 294 return 0; 295} 296 297DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0); 298