1/* $NetBSD: npx_acpi.c,v 1.18 2009/02/21 00:30:37 jmcneill Exp $ */ 2 3/* 4 * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28#include <sys/cdefs.h> 29__KERNEL_RCSID(0, "$NetBSD: npx_acpi.c,v 1.18 2009/02/21 00:30:37 jmcneill Exp $"); 30 31#include <sys/param.h> 32#include <sys/systm.h> 33#include <sys/device.h> 34 35#include <sys/bus.h> 36#include <machine/cpufunc.h> 37#include <machine/intr.h> 38#include <machine/specialreg.h> 39 40#include <dev/isa/isavar.h> 41#include <dev/isa/isadmavar.h> 42 43#include <dev/acpi/acpica.h> 44#include <dev/acpi/acpireg.h> 45#include <dev/acpi/acpivar.h> 46 47#include <i386/isa/npxvar.h> 48 49static int npx_acpi_match(device_t, cfdata_t, void *); 50static void npx_acpi_attach(device_t, device_t, void *); 51 52CFATTACH_DECL_NEW(npx_acpi, sizeof(struct npx_softc), npx_acpi_match, 53 npx_acpi_attach, NULL, NULL); 54 55/* 56 * Supported device IDs 57 */ 58 59static const char * const npx_acpi_ids[] = { 60 "PNP0C04", /* Math Coprocessor */ 61 NULL 62}; 63 64/* 65 * npx_acpi_match: autoconf(9) match routine 66 */ 67static int 68npx_acpi_match(device_t parent, cfdata_t match, void *aux) 69{ 70 struct acpi_attach_args *aa = aux; 71 72 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 73 return 0; 74 75 return acpi_match_hid(aa->aa_node->ad_devinfo, npx_acpi_ids); 76} 77 78/* 79 * npx_acpi_attach: autoconf(9) attach routine 80 */ 81static void 82npx_acpi_attach(device_t parent, device_t self, void *aux) 83{ 84 struct npx_softc *sc = device_private(self); 85 struct acpi_attach_args *aa = aux; 86 struct acpi_resources res; 87 struct acpi_io *io; 88 struct acpi_irq *irq; 89 ACPI_STATUS rv; 90 91 sc->sc_dev = self; 92 93 /* parse resources */ 94 rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS", 95 &res, &acpi_resource_parse_ops_default); 96 if (ACPI_FAILURE(rv)) 97 return; 98 99 /* find our i/o registers */ 100 io = acpi_res_io(&res, 0); 101 if (io == NULL) { 102 aprint_error_dev(self, 103 "unable to find i/o register resource\n"); 104 goto out; 105 } 106 107 /* find our IRQ */ 108 irq = acpi_res_irq(&res, 0); 109 if (irq == NULL) { 110 aprint_error_dev(self, "unable to find irq resource\n"); 111 goto out; 112 } 113 114 sc->sc_iot = aa->aa_iot; 115 if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 116 0, &sc->sc_ioh)) { 117 aprint_error_dev(self, "can't map i/o space\n"); 118 goto out; 119 } 120 121 sc->sc_type = npxprobe1(sc->sc_iot, sc->sc_ioh, irq->ar_irq); 122 123 switch (sc->sc_type) { 124 case NPX_INTERRUPT: 125 lcr0(rcr0() & ~CR0_NE); 126 sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq, 127 (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE:IST_LEVEL, 128 IPL_NONE, (int (*)(void *))npxintr, NULL); 129 break; 130 case NPX_EXCEPTION: 131 /*FALLTHROUGH*/ 132 case NPX_CPUID: 133 aprint_verbose_dev(self, "%susing exception 16\n", 134 sc->sc_type == NPX_CPUID ? "reported by CPUID; " : ""); 135 sc->sc_type = NPX_EXCEPTION; 136 break; 137 case NPX_BROKEN: 138 aprint_error_dev(self, "error reporting broken; not using\n"); 139 sc->sc_type = NPX_NONE; 140 goto out; 141 case NPX_NONE: 142 panic("npx_acpi_attach"); 143 } 144 145 npxattach(sc); 146 147 out: 148 acpi_resource_cleanup(&res); 149} 150