1/* $NetBSD: bcm2835_mbox_acpi.c,v 1.2 2020/02/22 22:09:07 jmcneill Exp $ */ 2 3/*- 4 * Copyright (c) 2012 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Nick Hudson 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: bcm2835_mbox_acpi.c,v 1.2 2020/02/22 22:09:07 jmcneill Exp $"); 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/device.h> 38#include <sys/kernel.h> 39#include <sys/timetc.h> 40#include <sys/bus.h> 41#include <sys/mutex.h> 42 43#include <arm/broadcom/bcm2835_mbox.h> 44#include <arm/broadcom/bcm2835_mboxreg.h> 45#include <arm/broadcom/bcm2835reg.h> 46#include <arm/broadcom/bcm2835var.h> 47 48#include <dev/acpi/acpivar.h> 49#include <dev/acpi/acpi_intr.h> 50#include <arch/evbarm/rpi/vcprop.h> 51#include <arch/evbarm/rpi/vcio.h> 52#include <arch/evbarm/rpi/vcpm.h> 53 54static int bcmmbox_acpi_match(device_t, cfdata_t, void *); 55static void bcmmbox_acpi_attach(device_t, device_t, void *); 56 57CFATTACH_DECL_NEW(bcmmbox_acpi, sizeof(struct bcm2835mbox_softc), 58 bcmmbox_acpi_match, bcmmbox_acpi_attach, NULL, NULL); 59 60static int 61bcmmbox_acpi_match(device_t parent, cfdata_t match, void *aux) 62{ 63 const char * const acpi_compatible[] = { 64 "BCM2849", 65 NULL 66 }; 67 struct acpi_attach_args * const aa = aux; 68 69 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 70 return 0; 71 72 return acpi_match_hid(aa->aa_node->ad_devinfo, acpi_compatible); 73} 74 75static void 76bcmmbox_acpi_attach(device_t parent, device_t self, void *aux) 77{ 78 struct bcm2835mbox_softc *sc = device_private(self); 79 struct acpi_attach_args * const aa = aux; 80 struct acpi_resources res; 81 struct acpi_mem *mem; 82 struct acpi_irq *irq; 83 ACPI_STATUS rv; 84 85 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 86 &res, &acpi_resource_parse_ops_default); 87 if (ACPI_FAILURE(rv)) 88 return; 89 90 mem = acpi_res_mem(&res, 0); 91 irq = acpi_res_irq(&res, 0); 92 if (mem == NULL || irq == NULL) { 93 aprint_error_dev(self, "couldn't find resources\n"); 94 return; 95 } 96 97 sc->sc_dev = self; 98 sc->sc_iot = aa->aa_memt; 99 sc->sc_dmat = aa->aa_dmat; 100 101 if (bus_space_map(sc->sc_iot, mem->ar_base, mem->ar_length, 0, &sc->sc_ioh) != 0) { 102 aprint_error_dev(sc->sc_dev, "unable to map device\n"); 103 return; 104 } 105 106#if notyet 107 sc->sc_intrh = acpi_intr_establish(self, (uint64_t)aa->aa_node->ad_handle, 108 IPL_VM, false, bcmmbox_intr, sc, device_xname(self)); 109 if (sc->sc_intrh == NULL) { 110 aprint_error_dev(self, "failed to establish interrupt\n"); 111 return; 112 } 113#endif 114 115 bcmmbox_attach(sc); 116} 117