atkbdc_isa.c revision 56836
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_isa.c 56836 2000-01-29 15:08:56Z peter $ 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 kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT); 121 if (!kdev) 122 return; 123 bzero(kdev, sizeof *kdev); 124 125 kdev->port = sc->port; 126 127 if (resource_int_value(name, unit, "irq", &t) == 0) 128 kdev->irq = t; 129 else 130 kdev->irq = -1; 131 132 if (resource_int_value(name, unit, "flags", &t) == 0) 133 kdev->flags = t; 134 else 135 kdev->flags = 0; 136 137 child = device_add_child(dev, name, unit); 138 device_set_ivars(child, kdev); 139} 140 141static int 142atkbdc_attach(device_t dev) 143{ 144 atkbdc_softc_t *sc; 145 struct resource *port; 146 int unit; 147 int error; 148 int rid; 149 int i; 150 151 unit = device_get_unit(dev); 152 sc = *(atkbdc_softc_t **)device_get_softc(dev); 153 if (sc == NULL) { 154 /* 155 * We have to maintain two copies of the kbdc_softc struct, 156 * as the low-level console needs to have access to the 157 * keyboard controller before kbdc is probed and attached. 158 * kbdc_soft[] contains the default entry for that purpose. 159 * See atkbdc.c. XXX 160 */ 161 sc = atkbdc_get_softc(unit); 162 if (sc == NULL) 163 return ENOMEM; 164 } 165 166 /* XXX should track resource in softc */ 167 rid = 0; 168 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 169 0, ~0, IO_KBDSIZE, RF_ACTIVE); 170 if (!port) 171 return ENXIO; 172 error = atkbdc_attach_unit(unit, sc, rman_get_start(port)); 173 if (error) 174 return error; 175 *(atkbdc_softc_t **)device_get_softc(dev) = sc; 176 177 /* 178 * Add all devices configured to be attached to atkbdc0. 179 */ 180 for (i = resource_query_string(-1, "at", "atkbdc0"); 181 i != -1; 182 i = resource_query_string(i, "at", "atkbdc0")) { 183 atkbdc_add_device(dev, resource_query_name(i), 184 resource_query_unit(i)); 185 } 186 187 /* 188 * and atkbdc? 189 */ 190 for (i = resource_query_string(-1, "at", "atkbdc"); 191 i != -1; 192 i = resource_query_string(i, "at", "atkbdc")) { 193 atkbdc_add_device(dev, resource_query_name(i), 194 resource_query_unit(i)); 195 } 196 197 bus_generic_attach(dev); 198 199 return 0; 200} 201 202static int 203atkbdc_print_child(device_t bus, device_t dev) 204{ 205 atkbdc_device_t *kbdcdev; 206 int retval = 0; 207 208 kbdcdev = (atkbdc_device_t *)device_get_ivars(dev); 209 210 retval += bus_print_child_header(bus, dev); 211 if (kbdcdev->flags != 0) 212 retval += printf(" flags 0x%x", kbdcdev->flags); 213 if (kbdcdev->irq != -1) 214 retval += printf(" irq %d", kbdcdev->irq); 215 retval += bus_print_child_footer(bus, dev); 216 217 return (retval); 218} 219 220static int 221atkbdc_read_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 *val = (u_long)ivar->port; 229 break; 230 case KBDC_IVAR_IRQ: 231 *val = (u_long)ivar->irq; 232 break; 233 case KBDC_IVAR_FLAGS: 234 *val = (u_long)ivar->flags; 235 break; 236 default: 237 return ENOENT; 238 } 239 return 0; 240} 241 242static int 243atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val) 244{ 245 atkbdc_device_t *ivar; 246 247 ivar = (atkbdc_device_t *)device_get_ivars(dev); 248 switch (index) { 249 case KBDC_IVAR_PORT: 250 ivar->port = (int)val; 251 break; 252 case KBDC_IVAR_IRQ: 253 ivar->irq = (int)val; 254 break; 255 case KBDC_IVAR_FLAGS: 256 ivar->flags = (int)val; 257 break; 258 default: 259 return ENOENT; 260 } 261 return 0; 262} 263 264DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0); 265