acpi_isab.c revision 128071
1/*- 2 * Copyright (c) 2003 John Baldwin <jhb@FreeBSD.org> 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. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: head/sys/dev/acpica/acpi_isab.c 128071 2004-04-09 18:14:32Z njl $"); 29 30/* 31 * ISA Bridge driver for Generic ISA Bus Devices. See section 10.7 of the 32 * ACPI 2.0a specification for details on this device. 33 */ 34 35#include "opt_acpi.h" 36#include <sys/param.h> 37#include <sys/bus.h> 38#include <sys/malloc.h> 39#include <sys/kernel.h> 40 41#include "acpi.h" 42 43#include <dev/acpica/acpivar.h> 44#include <isa/isavar.h> 45 46/* 47 * Hooks for the ACPI CA debugging infrastructure 48 */ 49#define _COMPONENT ACPI_BUS 50ACPI_MODULE_NAME("ISA_ACPI") 51 52struct acpi_isab_softc { 53 device_t ap_dev; 54 ACPI_HANDLE ap_handle; 55}; 56 57 58static int acpi_isab_probe(device_t bus); 59static int acpi_isab_attach(device_t bus); 60static int acpi_isab_read_ivar(device_t dev, device_t child, int which, 61 uintptr_t *result); 62 63static device_method_t acpi_isab_methods[] = { 64 /* Device interface */ 65 DEVMETHOD(device_probe, acpi_isab_probe), 66 DEVMETHOD(device_attach, acpi_isab_attach), 67 DEVMETHOD(device_shutdown, bus_generic_shutdown), 68 DEVMETHOD(device_suspend, bus_generic_suspend), 69 DEVMETHOD(device_resume, bus_generic_resume), 70 71 /* Bus interface */ 72 DEVMETHOD(bus_print_child, bus_generic_print_child), 73 DEVMETHOD(bus_read_ivar, acpi_isab_read_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 acpi_isab_driver = { 85 "isab", 86 acpi_isab_methods, 87 sizeof(struct acpi_isab_softc), 88}; 89 90DRIVER_MODULE(acpi_isab, acpi, acpi_isab_driver, isab_devclass, 0, 0); 91MODULE_DEPEND(acpi_isab, acpi, 1, 1, 1); 92 93static int 94acpi_isab_probe(device_t dev) 95{ 96 97 if ((acpi_get_type(dev) == ACPI_TYPE_DEVICE) && 98 !acpi_disabled("isa") && 99 devclass_get_device(isab_devclass, 0) == dev && 100 (acpi_MatchHid(dev, "PNP0A05") || acpi_MatchHid(dev, "PNP0A06"))) { 101 device_set_desc(dev, "ACPI Generic ISA bridge"); 102 return(0); 103 } 104 return(ENXIO); 105} 106 107static int 108acpi_isab_attach(device_t dev) 109{ 110 struct acpi_isab_softc *sc; 111 112 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 113 114 sc = device_get_softc(dev); 115 sc->ap_dev = dev; 116 sc->ap_handle = acpi_get_handle(dev); 117 118 return (isab_attach(dev)); 119} 120 121static int 122acpi_isab_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 123{ 124 struct acpi_isab_softc *sc = device_get_softc(dev); 125 126 switch (which) { 127 case ACPI_IVAR_HANDLE: 128 *result = (uintptr_t)sc->ap_handle; 129 return(0); 130 } 131 return(ENOENT); 132} 133