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 * $FreeBSD: src/sys/dev/acpica/acpi_isab.c,v 1.11 2009/06/05 18:44:36 jkim 27 */ 28 29 /* 30 * ISA Bridge driver for Generic ISA Bus Devices. See section 10.7 of the 31 * ACPI 2.0a specification for details on this device. 32 */ 33 34 #include "opt_acpi.h" 35 #include <sys/param.h> 36 #include <sys/bus.h> 37 #include <sys/kernel.h> 38 #include <sys/malloc.h> 39 #include <sys/module.h> 40 41 #include "acpi.h" 42 #include "accommon.h" 43 44 #include <dev/acpica/acpivar.h> 45 #include <bus/isa/isavar.h> 46 47 /* Hooks for the ACPICA debugging infrastructure. */ 48 #define _COMPONENT ACPI_BUS 49 ACPI_MODULE_NAME("ISA_ACPI") 50 51 struct acpi_isab_softc { 52 device_t ap_dev; 53 ACPI_HANDLE ap_handle; 54 }; 55 56 static int acpi_isab_probe(device_t bus); 57 static int acpi_isab_attach(device_t bus); 58 static int acpi_isab_read_ivar(device_t dev, device_t child, int which, 59 uintptr_t *result); 60 61 static device_method_t acpi_isab_methods[] = { 62 /* Device interface */ 63 DEVMETHOD(device_probe, acpi_isab_probe), 64 DEVMETHOD(device_attach, acpi_isab_attach), 65 DEVMETHOD(device_shutdown, bus_generic_shutdown), 66 DEVMETHOD(device_suspend, bus_generic_suspend), 67 DEVMETHOD(device_resume, bus_generic_resume), 68 69 /* Bus interface */ 70 DEVMETHOD(bus_print_child, bus_generic_print_child), 71 DEVMETHOD(bus_read_ivar, acpi_isab_read_ivar), 72 DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), 73 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 74 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 75 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 76 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 77 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 78 79 DEVMETHOD_END 80 }; 81 82 static driver_t acpi_isab_driver = { 83 "isab", 84 acpi_isab_methods, 85 sizeof(struct acpi_isab_softc), 86 .gpri = KOBJ_GPRI_ACPI 87 }; 88 89 DRIVER_MODULE(acpi_isab, acpi, acpi_isab_driver, isab_devclass, NULL, NULL); 90 MODULE_DEPEND(acpi_isab, acpi, 1, 1, 1); 91 92 static int 93 acpi_isab_probe(device_t dev) 94 { 95 static char *isa_ids[] = { "PNP0A05", "PNP0A06", NULL }; 96 97 if (acpi_disabled("isab") || 98 ACPI_ID_PROBE(device_get_parent(dev), dev, isa_ids) == NULL || 99 devclass_get_device(isab_devclass, 0) != dev) 100 return (ENXIO); 101 102 device_set_desc(dev, "ACPI Generic ISA bridge"); 103 return (0); 104 } 105 106 static int 107 acpi_isab_attach(device_t dev) 108 { 109 struct acpi_isab_softc *sc; 110 111 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 112 113 sc = device_get_softc(dev); 114 sc->ap_dev = dev; 115 sc->ap_handle = acpi_get_handle(dev); 116 117 return (isab_attach(dev)); 118 } 119 120 static int 121 acpi_isab_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 122 { 123 struct acpi_isab_softc *sc = device_get_softc(dev); 124 125 switch (which) { 126 case ACPI_IVAR_HANDLE: 127 *result = (uintptr_t)sc->ap_handle; 128 return (0); 129 } 130 return (ENOENT); 131 } 132