atkbdc_subr.c revision 47400
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 1.6 1999/05/18 11:33:14 yokota 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#include <machine/bus.h> 40#include <machine/resource.h> 41#include <sys/rman.h> 42 43#include <dev/kbd/atkbdcreg.h> 44 45#include <isa/isareg.h> 46#include <isa/isavar.h> 47 48MALLOC_DEFINE(M_ATKBDDEV, "atkbddev", "AT Keyboard device"); 49 50/* children */ 51typedef struct atkbdc_device { 52 int flags; /* configuration flags */ 53 int port; /* port number (same as the controller's) */ 54 int irq; /* ISA IRQ mask */ 55} atkbdc_device_t; 56 57/* kbdc */ 58devclass_t atkbdc_devclass; 59 60static int atkbdc_probe(device_t dev); 61static int atkbdc_attach(device_t dev); 62static void atkbdc_print_child(device_t bus, device_t dev); 63static int atkbdc_read_ivar(device_t bus, device_t dev, int index, 64 u_long *val); 65static int atkbdc_write_ivar(device_t bus, device_t dev, int index, 66 u_long val); 67 68static device_method_t atkbdc_methods[] = { 69 DEVMETHOD(device_probe, atkbdc_probe), 70 DEVMETHOD(device_attach, atkbdc_attach), 71 DEVMETHOD(device_suspend, bus_generic_suspend), 72 DEVMETHOD(device_resume, bus_generic_resume), 73 74 DEVMETHOD(bus_print_child, atkbdc_print_child), 75 DEVMETHOD(bus_read_ivar, atkbdc_read_ivar), 76 DEVMETHOD(bus_write_ivar, atkbdc_write_ivar), 77 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 78 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 79 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 80 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 81 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 82 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 83 84 { 0, 0 } 85}; 86 87static driver_t atkbdc_driver = { 88 ATKBDC_DRIVER_NAME, 89 atkbdc_methods, 90 sizeof(atkbdc_softc_t *), 91}; 92 93static int 94atkbdc_probe(device_t dev) 95{ 96 int error; 97 int rid; 98 struct resource *port; 99 100 device_set_desc(dev, "keyboard controller (i8042)"); 101 rid = 0; 102 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 103 0, ~0, IO_KBDSIZE, RF_ACTIVE); 104 if (!port) 105 return ENXIO; 106 error = atkbdc_probe_unit(device_get_unit(dev), rman_get_start(port)); 107 bus_release_resource(dev, SYS_RES_IOPORT, rid, port); 108 return error; 109} 110 111static void 112atkbdc_add_device(device_t dev, const char *name, int unit) 113{ 114 atkbdc_softc_t *sc = *(atkbdc_softc_t **)device_get_softc(dev); 115 atkbdc_device_t *kdev; 116 device_t child; 117 int t; 118 int rid; 119 struct resource *port; 120 121 kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT); 122 if (!kdev) 123 return; 124 bzero(kdev, sizeof *kdev); 125 126 /* XXX should track resource in softc */ 127 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 128 0, ~0, IO_KBDSIZE, RF_ACTIVE); 129 kdev->port = sc->port; 130 131 if (resource_int_value(name, unit, "irq", &t) == 0) 132 kdev->irq = t; 133 else 134 kdev->irq = -1; 135 136 if (resource_int_value(name, unit, "flags", &t) == 0) 137 kdev->flags = t; 138 else 139 kdev->flags = 0; 140 141 child = device_add_child(dev, name, unit, kdev); 142} 143 144static int 145atkbdc_attach(device_t dev) 146{ 147 atkbdc_softc_t *sc; 148 int unit; 149 int error; 150 int i; 151 152 unit = device_get_unit(dev); 153 sc = *(atkbdc_softc_t **)device_get_softc(dev); 154 if (sc == NULL) { 155 /* 156 * We have to maintain two copies of the kbdc_softc struct, 157 * as the low-level console needs to have access to the 158 * keyboard controller before kbdc is probed and attached. 159 * kbdc_soft[] contains the default entry for that purpose. 160 * See atkbdc.c. XXX 161 */ 162 sc = atkbdc_get_softc(unit); 163 if (sc == NULL) 164 return ENOMEM; 165 } 166 167 error = atkbdc_attach_unit(unit, sc, isa_get_port(dev)); 168 if (error) 169 return error; 170 *(atkbdc_softc_t **)device_get_softc(dev) = sc; 171 172 /* 173 * Add all devices configured to be attached to atkbdc0. 174 */ 175 for (i = resource_query_string(-1, "at", "atkbdc0"); 176 i != -1; 177 i = resource_query_string(i, "at", "atkbdc0")) { 178 atkbdc_add_device(dev, resource_query_name(i), 179 resource_query_unit(i)); 180 } 181 182 /* 183 * and atkbdc? 184 */ 185 for (i = resource_query_string(-1, "at", "atkbdc"); 186 i != -1; 187 i = resource_query_string(i, "at", "atkbdc")) { 188 atkbdc_add_device(dev, resource_query_name(i), 189 resource_query_unit(i)); 190 } 191 192 bus_generic_attach(dev); 193 194 return 0; 195} 196 197static void 198atkbdc_print_child(device_t bus, device_t dev) 199{ 200 atkbdc_device_t *kbdcdev; 201 202 kbdcdev = (atkbdc_device_t *)device_get_ivars(dev); 203 204 if (kbdcdev->flags != 0) 205 printf(" flags 0x%x", kbdcdev->flags); 206 if (kbdcdev->irq != -1) 207 printf(" irq %d", kbdcdev->irq); 208 209 printf(" on %s%d", device_get_name(bus), device_get_unit(bus)); 210} 211 212static int 213atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val) 214{ 215 atkbdc_device_t *ivar; 216 217 ivar = (atkbdc_device_t *)device_get_ivars(dev); 218 switch (index) { 219 case KBDC_IVAR_PORT: 220 *val = (u_long)ivar->port; 221 break; 222 case KBDC_IVAR_IRQ: 223 *val = (u_long)ivar->irq; 224 break; 225 case KBDC_IVAR_FLAGS: 226 *val = (u_long)ivar->flags; 227 break; 228 default: 229 return ENOENT; 230 } 231 return 0; 232} 233 234static int 235atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val) 236{ 237 atkbdc_device_t *ivar; 238 239 ivar = (atkbdc_device_t *)device_get_ivars(dev); 240 switch (index) { 241 case KBDC_IVAR_PORT: 242 ivar->port = (int)val; 243 break; 244 case KBDC_IVAR_IRQ: 245 ivar->irq = (int)val; 246 break; 247 case KBDC_IVAR_FLAGS: 248 ivar->flags = (int)val; 249 break; 250 default: 251 return ENOENT; 252 } 253 return 0; 254} 255 256DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0); 257 258#endif /* NATKBDC > 0 */ 259