atkbdc_subr.c revision 57481
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 57481 2000-02-25 11:40:31Z 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.h> 37#include <machine/resource.h> 38#include <sys/rman.h> 39 40#include <dev/kbd/atkbdcreg.h> 41 42#include <isa/isareg.h> 43#include <isa/isavar.h> 44 45MALLOC_DEFINE(M_ATKBDDEV, "atkbddev", "AT Keyboard device"); 46 47/* children */ 48typedef struct atkbdc_device { 49 int flags; /* configuration flags */ 50 int port; /* port number (same as the controller's) */ 51 int irq; /* ISA IRQ mask */ 52} atkbdc_device_t; 53 54/* kbdc */ 55devclass_t atkbdc_devclass; 56 57static int atkbdc_probe(device_t dev); 58static int atkbdc_attach(device_t dev); 59static int atkbdc_print_child(device_t bus, device_t dev); 60static int atkbdc_read_ivar(device_t bus, device_t dev, int index, 61 u_long *val); 62static int atkbdc_write_ivar(device_t bus, device_t dev, int index, 63 u_long val); 64 65static device_method_t atkbdc_methods[] = { 66 DEVMETHOD(device_probe, atkbdc_probe), 67 DEVMETHOD(device_attach, atkbdc_attach), 68 DEVMETHOD(device_suspend, bus_generic_suspend), 69 DEVMETHOD(device_resume, bus_generic_resume), 70 71 DEVMETHOD(bus_print_child, atkbdc_print_child), 72 DEVMETHOD(bus_read_ivar, atkbdc_read_ivar), 73 DEVMETHOD(bus_write_ivar, atkbdc_write_ivar), 74 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 75 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 76 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 77 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 78 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 79 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 80 81 { 0, 0 } 82}; 83 84static driver_t atkbdc_driver = { 85 ATKBDC_DRIVER_NAME, 86 atkbdc_methods, 87 sizeof(atkbdc_softc_t *), 88}; 89 90static int 91atkbdc_probe(device_t dev) 92{ 93 int error; 94 int rid; 95 struct resource *port; 96 97 /* Check isapnp ids */ 98 if (isa_get_vendorid(dev)) 99 return (ENXIO); 100 101 device_set_desc(dev, "keyboard controller (i8042)"); 102 rid = 0; 103 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 104 0, ~0, IO_KBDSIZE, RF_ACTIVE); 105 if (!port) 106 return ENXIO; 107 error = atkbdc_probe_unit(device_get_unit(dev), rman_get_start(port)); 108 bus_release_resource(dev, SYS_RES_IOPORT, rid, port); 109 return error; 110} 111 112static void 113atkbdc_add_device(device_t dev, const char *name, int unit) 114{ 115 atkbdc_softc_t *sc = *(atkbdc_softc_t **)device_get_softc(dev); 116 atkbdc_device_t *kdev; 117 device_t child; 118 int t; 119 120 if (resource_int_value(name, unit, "disabled", &t) == 0 && t != 0) 121 return; 122 123 kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT); 124 if (!kdev) 125 return; 126 bzero(kdev, sizeof *kdev); 127 128 kdev->port = sc->port; 129 130 if (resource_int_value(name, unit, "irq", &t) == 0) 131 kdev->irq = t; 132 else 133 kdev->irq = -1; 134 135 if (resource_int_value(name, unit, "flags", &t) == 0) 136 kdev->flags = t; 137 else 138 kdev->flags = 0; 139 140 child = device_add_child(dev, name, unit); 141 device_set_ivars(child, kdev); 142} 143 144static int 145atkbdc_attach(device_t dev) 146{ 147 atkbdc_softc_t *sc; 148 struct resource *port; 149 int unit; 150 int error; 151 int rid; 152 int i; 153 154 unit = device_get_unit(dev); 155 sc = *(atkbdc_softc_t **)device_get_softc(dev); 156 if (sc == NULL) { 157 /* 158 * We have to maintain two copies of the kbdc_softc struct, 159 * as the low-level console needs to have access to the 160 * keyboard controller before kbdc is probed and attached. 161 * kbdc_soft[] contains the default entry for that purpose. 162 * See atkbdc.c. XXX 163 */ 164 sc = atkbdc_get_softc(unit); 165 if (sc == NULL) 166 return ENOMEM; 167 } 168 169 /* XXX should track resource in softc */ 170 rid = 0; 171 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 172 0, ~0, IO_KBDSIZE, RF_ACTIVE); 173 if (!port) 174 return ENXIO; 175 error = atkbdc_attach_unit(unit, sc, rman_get_start(port)); 176 if (error) 177 return error; 178 *(atkbdc_softc_t **)device_get_softc(dev) = sc; 179 180 /* 181 * Add all devices configured to be attached to atkbdc0. 182 */ 183 for (i = resource_query_string(-1, "at", "atkbdc0"); 184 i != -1; 185 i = resource_query_string(i, "at", "atkbdc0")) { 186 atkbdc_add_device(dev, resource_query_name(i), 187 resource_query_unit(i)); 188 } 189 190 /* 191 * and atkbdc? 192 */ 193 for (i = resource_query_string(-1, "at", "atkbdc"); 194 i != -1; 195 i = resource_query_string(i, "at", "atkbdc")) { 196 atkbdc_add_device(dev, resource_query_name(i), 197 resource_query_unit(i)); 198 } 199 200 bus_generic_attach(dev); 201 202 return 0; 203} 204 205static int 206atkbdc_print_child(device_t bus, device_t dev) 207{ 208 atkbdc_device_t *kbdcdev; 209 int retval = 0; 210 211 kbdcdev = (atkbdc_device_t *)device_get_ivars(dev); 212 213 retval += bus_print_child_header(bus, dev); 214 if (kbdcdev->flags != 0) 215 retval += printf(" flags 0x%x", kbdcdev->flags); 216 if (kbdcdev->irq != -1) 217 retval += printf(" irq %d", kbdcdev->irq); 218 retval += bus_print_child_footer(bus, dev); 219 220 return (retval); 221} 222 223static int 224atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val) 225{ 226 atkbdc_device_t *ivar; 227 228 ivar = (atkbdc_device_t *)device_get_ivars(dev); 229 switch (index) { 230 case KBDC_IVAR_PORT: 231 *val = (u_long)ivar->port; 232 break; 233 case KBDC_IVAR_IRQ: 234 *val = (u_long)ivar->irq; 235 break; 236 case KBDC_IVAR_FLAGS: 237 *val = (u_long)ivar->flags; 238 break; 239 default: 240 return ENOENT; 241 } 242 return 0; 243} 244 245static int 246atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val) 247{ 248 atkbdc_device_t *ivar; 249 250 ivar = (atkbdc_device_t *)device_get_ivars(dev); 251 switch (index) { 252 case KBDC_IVAR_PORT: 253 ivar->port = (int)val; 254 break; 255 case KBDC_IVAR_IRQ: 256 ivar->irq = (int)val; 257 break; 258 case KBDC_IVAR_FLAGS: 259 ivar->flags = (int)val; 260 break; 261 default: 262 return ENOENT; 263 } 264 return 0; 265} 266 267DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0); 268