atkbdc_subr.c revision 47296
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 * $Id: atkbdc_isa.c,v 1.5 1999/05/09 20:45:53 peter Exp $ 27 */ 28 29#include "atkbdc.h" 30#include "opt_kbd.h" 31 32#if NATKBDC > 0 33 34#include <sys/param.h> 35#include <sys/systm.h> 36#include <sys/kernel.h> 37#include <sys/bus.h> 38#include <sys/malloc.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 void 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 95 device_set_desc(dev, "keyboard controller (i8042)"); 96 error = atkbdc_probe_unit(device_get_unit(dev), isa_get_port(dev)); 97 if (error == 0) 98 isa_set_portsize(dev, IO_KBDSIZE); 99 return error; 100} 101 102static void 103atkbdc_add_device(device_t dev, const char *name, int unit) 104{ 105 atkbdc_softc_t *sc = *(atkbdc_softc_t **)device_get_softc(dev); 106 atkbdc_device_t *kdev; 107 device_t child; 108 int t; 109 110 kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT); 111 if (!kdev) 112 return; 113 bzero(kdev, sizeof *kdev); 114 115 kdev->port = sc->port; 116 117 if (resource_int_value(name, unit, "irq", &t) == 0) 118 kdev->irq = t; 119 else 120 kdev->irq = -1; 121 122 if (resource_int_value(name, unit, "flags", &t) == 0) 123 kdev->flags = t; 124 else 125 kdev->flags = 0; 126 127 child = device_add_child(dev, name, unit, kdev); 128} 129 130static int 131atkbdc_attach(device_t dev) 132{ 133 atkbdc_softc_t *sc; 134 int unit; 135 int error; 136 int i; 137 138 unit = device_get_unit(dev); 139 sc = *(atkbdc_softc_t **)device_get_softc(dev); 140 if (sc == NULL) { 141 /* 142 * We have to maintain two copies of the kbdc_softc struct, 143 * as the low-level console needs to have access to the 144 * keyboard controller before kbdc is probed and attached. 145 * kbdc_soft[] contains the default entry for that purpose. 146 * See atkbdc.c. XXX 147 */ 148 sc = atkbdc_get_softc(unit); 149 if (sc == NULL) 150 return ENOMEM; 151 } 152 153 error = atkbdc_attach_unit(unit, sc, isa_get_port(dev)); 154 if (error) 155 return error; 156 *(atkbdc_softc_t **)device_get_softc(dev) = sc; 157 158 /* 159 * Add all devices configured to be attached to atkbdc0. 160 */ 161 for (i = resource_query_string(-1, "at", "atkbdc0"); 162 i != -1; 163 i = resource_query_string(i, "at", "atkbdc0")) { 164 atkbdc_add_device(dev, resource_query_name(i), 165 resource_query_unit(i)); 166 } 167 168 /* 169 * and atkbdc? 170 */ 171 for (i = resource_query_string(-1, "at", "atkbdc"); 172 i != -1; 173 i = resource_query_string(i, "at", "atkbdc")) { 174 atkbdc_add_device(dev, resource_query_name(i), 175 resource_query_unit(i)); 176 } 177 178 bus_generic_attach(dev); 179 180 return 0; 181} 182 183static void 184atkbdc_print_child(device_t bus, device_t dev) 185{ 186 atkbdc_device_t *kbdcdev; 187 188 kbdcdev = (atkbdc_device_t *)device_get_ivars(dev); 189 190 if (kbdcdev->flags != 0) 191 printf(" flags 0x%x", kbdcdev->flags); 192 if (kbdcdev->irq != -1) 193 printf(" irq %d", kbdcdev->irq); 194 195 printf(" on %s%d", device_get_name(bus), device_get_unit(bus)); 196} 197 198static int 199atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val) 200{ 201 atkbdc_device_t *ivar; 202 203 ivar = (atkbdc_device_t *)device_get_ivars(dev); 204 switch (index) { 205 case KBDC_IVAR_PORT: 206 *val = (u_long)ivar->port; 207 break; 208 case KBDC_IVAR_IRQ: 209 *val = (u_long)ivar->irq; 210 break; 211 case KBDC_IVAR_FLAGS: 212 *val = (u_long)ivar->flags; 213 break; 214 default: 215 return ENOENT; 216 } 217 return 0; 218} 219 220static int 221atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val) 222{ 223 atkbdc_device_t *ivar; 224 225 ivar = (atkbdc_device_t *)device_get_ivars(dev); 226 switch (index) { 227 case KBDC_IVAR_PORT: 228 ivar->port = (int)val; 229 break; 230 case KBDC_IVAR_IRQ: 231 ivar->irq = (int)val; 232 break; 233 case KBDC_IVAR_FLAGS: 234 ivar->flags = (int)val; 235 break; 236 default: 237 return ENOENT; 238 } 239 return 0; 240} 241 242DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0); 243 244#endif /* NATKBDC > 0 */ 245