atkbdc_subr.c revision 47618
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 1.7 1999/05/22 15:47:33 dfr 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 /* Check isapnp ids */ 101 if (isa_get_vendorid(dev)) 102 return (ENXIO); 103 104 device_set_desc(dev, "keyboard controller (i8042)"); 105 rid = 0; 106 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 107 0, ~0, IO_KBDSIZE, RF_ACTIVE); 108 if (!port) 109 return ENXIO; 110 error = atkbdc_probe_unit(device_get_unit(dev), rman_get_start(port)); 111 bus_release_resource(dev, SYS_RES_IOPORT, rid, port); 112 return error; 113} 114 115static void 116atkbdc_add_device(device_t dev, const char *name, int unit) 117{ 118 atkbdc_softc_t *sc = *(atkbdc_softc_t **)device_get_softc(dev); 119 atkbdc_device_t *kdev; 120 device_t child; 121 int t; 122 int rid; 123 struct resource *port; 124 125 kdev = malloc(sizeof(struct atkbdc_device), M_ATKBDDEV, M_NOWAIT); 126 if (!kdev) 127 return; 128 bzero(kdev, sizeof *kdev); 129 130 /* XXX should track resource in softc */ 131 port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 132 0, ~0, IO_KBDSIZE, RF_ACTIVE); 133 kdev->port = sc->port; 134 135 if (resource_int_value(name, unit, "irq", &t) == 0) 136 kdev->irq = t; 137 else 138 kdev->irq = -1; 139 140 if (resource_int_value(name, unit, "flags", &t) == 0) 141 kdev->flags = t; 142 else 143 kdev->flags = 0; 144 145 child = device_add_child(dev, name, unit, kdev); 146} 147 148static int 149atkbdc_attach(device_t dev) 150{ 151 atkbdc_softc_t *sc; 152 int unit; 153 int error; 154 int i; 155 156 unit = device_get_unit(dev); 157 sc = *(atkbdc_softc_t **)device_get_softc(dev); 158 if (sc == NULL) { 159 /* 160 * We have to maintain two copies of the kbdc_softc struct, 161 * as the low-level console needs to have access to the 162 * keyboard controller before kbdc is probed and attached. 163 * kbdc_soft[] contains the default entry for that purpose. 164 * See atkbdc.c. XXX 165 */ 166 sc = atkbdc_get_softc(unit); 167 if (sc == NULL) 168 return ENOMEM; 169 } 170 171 error = atkbdc_attach_unit(unit, sc, isa_get_port(dev)); 172 if (error) 173 return error; 174 *(atkbdc_softc_t **)device_get_softc(dev) = sc; 175 176 /* 177 * Add all devices configured to be attached to atkbdc0. 178 */ 179 for (i = resource_query_string(-1, "at", "atkbdc0"); 180 i != -1; 181 i = resource_query_string(i, "at", "atkbdc0")) { 182 atkbdc_add_device(dev, resource_query_name(i), 183 resource_query_unit(i)); 184 } 185 186 /* 187 * and atkbdc? 188 */ 189 for (i = resource_query_string(-1, "at", "atkbdc"); 190 i != -1; 191 i = resource_query_string(i, "at", "atkbdc")) { 192 atkbdc_add_device(dev, resource_query_name(i), 193 resource_query_unit(i)); 194 } 195 196 bus_generic_attach(dev); 197 198 return 0; 199} 200 201static void 202atkbdc_print_child(device_t bus, device_t dev) 203{ 204 atkbdc_device_t *kbdcdev; 205 206 kbdcdev = (atkbdc_device_t *)device_get_ivars(dev); 207 208 if (kbdcdev->flags != 0) 209 printf(" flags 0x%x", kbdcdev->flags); 210 if (kbdcdev->irq != -1) 211 printf(" irq %d", kbdcdev->irq); 212 213 printf(" on %s%d", device_get_name(bus), device_get_unit(bus)); 214} 215 216static int 217atkbdc_read_ivar(device_t bus, device_t dev, int index, u_long *val) 218{ 219 atkbdc_device_t *ivar; 220 221 ivar = (atkbdc_device_t *)device_get_ivars(dev); 222 switch (index) { 223 case KBDC_IVAR_PORT: 224 *val = (u_long)ivar->port; 225 break; 226 case KBDC_IVAR_IRQ: 227 *val = (u_long)ivar->irq; 228 break; 229 case KBDC_IVAR_FLAGS: 230 *val = (u_long)ivar->flags; 231 break; 232 default: 233 return ENOENT; 234 } 235 return 0; 236} 237 238static int 239atkbdc_write_ivar(device_t bus, device_t dev, int index, u_long val) 240{ 241 atkbdc_device_t *ivar; 242 243 ivar = (atkbdc_device_t *)device_get_ivars(dev); 244 switch (index) { 245 case KBDC_IVAR_PORT: 246 ivar->port = (int)val; 247 break; 248 case KBDC_IVAR_IRQ: 249 ivar->irq = (int)val; 250 break; 251 case KBDC_IVAR_FLAGS: 252 ivar->flags = (int)val; 253 break; 254 default: 255 return ENOENT; 256 } 257 return 0; 258} 259 260DRIVER_MODULE(atkbdc, isa, atkbdc_driver, atkbdc_devclass, 0, 0); 261 262#endif /* NATKBDC > 0 */ 263