virtio_acpi.c revision 1.2.2.2
1 1.2.2.2 pgoyette /* $NetBSD: virtio_acpi.c,v 1.2.2.2 2018/11/26 01:52:30 pgoyette Exp $ */ 2 1.2.2.2 pgoyette 3 1.2.2.2 pgoyette /*- 4 1.2.2.2 pgoyette * Copyright (c) 2018 The NetBSD Foundation, Inc. 5 1.2.2.2 pgoyette * All rights reserved. 6 1.2.2.2 pgoyette * 7 1.2.2.2 pgoyette * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 pgoyette * by Jared McNeill <jmcneill (at) invisible.ca>. 9 1.2.2.2 pgoyette * 10 1.2.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 11 1.2.2.2 pgoyette * modification, are permitted provided that the following conditions 12 1.2.2.2 pgoyette * are met: 13 1.2.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 14 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 15 1.2.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 pgoyette * documentation and/or other materials provided with the distribution. 18 1.2.2.2 pgoyette * 19 1.2.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.2.2 pgoyette * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.2.2 pgoyette * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.2.2 pgoyette * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.2.2 pgoyette * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.2.2 pgoyette * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.2.2 pgoyette * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.2.2 pgoyette * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.2.2 pgoyette * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.2.2 pgoyette * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.2.2 pgoyette * POSSIBILITY OF SUCH DAMAGE. 30 1.2.2.2 pgoyette */ 31 1.2.2.2 pgoyette 32 1.2.2.2 pgoyette #include <sys/cdefs.h> 33 1.2.2.2 pgoyette __KERNEL_RCSID(0, "$NetBSD: virtio_acpi.c,v 1.2.2.2 2018/11/26 01:52:30 pgoyette Exp $"); 34 1.2.2.2 pgoyette 35 1.2.2.2 pgoyette #include <sys/param.h> 36 1.2.2.2 pgoyette #include <sys/bus.h> 37 1.2.2.2 pgoyette #include <sys/cpu.h> 38 1.2.2.2 pgoyette #include <sys/device.h> 39 1.2.2.2 pgoyette 40 1.2.2.2 pgoyette #include <dev/acpi/acpireg.h> 41 1.2.2.2 pgoyette #include <dev/acpi/acpivar.h> 42 1.2.2.2 pgoyette #include <dev/acpi/acpi_intr.h> 43 1.2.2.2 pgoyette 44 1.2.2.2 pgoyette #define VIRTIO_PRIVATE 45 1.2.2.2 pgoyette #include <dev/virtio/virtio_mmiovar.h> 46 1.2.2.2 pgoyette 47 1.2.2.2 pgoyette struct virtio_acpi_softc { 48 1.2.2.2 pgoyette struct virtio_mmio_softc sc_msc; 49 1.2.2.2 pgoyette ACPI_HANDLE sc_handle; 50 1.2.2.2 pgoyette int sc_irq; 51 1.2.2.2 pgoyette int sc_irqtype; 52 1.2.2.2 pgoyette }; 53 1.2.2.2 pgoyette 54 1.2.2.2 pgoyette static int virtio_acpi_match(device_t, cfdata_t, void *); 55 1.2.2.2 pgoyette static void virtio_acpi_attach(device_t, device_t, void *); 56 1.2.2.2 pgoyette static int virtio_acpi_rescan(device_t, const char *, const int *); 57 1.2.2.2 pgoyette static int virtio_acpi_detach(device_t, int); 58 1.2.2.2 pgoyette 59 1.2.2.2 pgoyette static int virtio_acpi_setup_interrupts(struct virtio_mmio_softc *); 60 1.2.2.2 pgoyette static void virtio_acpi_free_interrupts(struct virtio_mmio_softc *); 61 1.2.2.2 pgoyette 62 1.2.2.2 pgoyette CFATTACH_DECL3_NEW(virtio_acpi, sizeof(struct virtio_acpi_softc), 63 1.2.2.2 pgoyette virtio_acpi_match, virtio_acpi_attach, virtio_acpi_detach, NULL, 64 1.2.2.2 pgoyette virtio_acpi_rescan, (void *)voidop, DVF_DETACH_SHUTDOWN); 65 1.2.2.2 pgoyette 66 1.2.2.2 pgoyette static const char * const compatible[] = { 67 1.2.2.2 pgoyette "LNRO0005", 68 1.2.2.2 pgoyette NULL 69 1.2.2.2 pgoyette }; 70 1.2.2.2 pgoyette 71 1.2.2.2 pgoyette static int 72 1.2.2.2 pgoyette virtio_acpi_match(device_t parent, cfdata_t cf, void *aux) 73 1.2.2.2 pgoyette { 74 1.2.2.2 pgoyette struct acpi_attach_args *aa = aux; 75 1.2.2.2 pgoyette 76 1.2.2.2 pgoyette if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 77 1.2.2.2 pgoyette return 0; 78 1.2.2.2 pgoyette 79 1.2.2.2 pgoyette return acpi_match_hid(aa->aa_node->ad_devinfo, compatible); 80 1.2.2.2 pgoyette } 81 1.2.2.2 pgoyette 82 1.2.2.2 pgoyette static void 83 1.2.2.2 pgoyette virtio_acpi_attach(device_t parent, device_t self, void *aux) 84 1.2.2.2 pgoyette { 85 1.2.2.2 pgoyette struct virtio_acpi_softc * const sc = device_private(self); 86 1.2.2.2 pgoyette struct virtio_mmio_softc * const msc = &sc->sc_msc; 87 1.2.2.2 pgoyette struct virtio_softc * const vsc = &msc->sc_sc; 88 1.2.2.2 pgoyette struct acpi_attach_args *aa = aux; 89 1.2.2.2 pgoyette struct acpi_resources res; 90 1.2.2.2 pgoyette struct acpi_mem *mem; 91 1.2.2.2 pgoyette struct acpi_irq *irq; 92 1.2.2.2 pgoyette ACPI_STATUS rv; 93 1.2.2.2 pgoyette int error; 94 1.2.2.2 pgoyette 95 1.2.2.2 pgoyette sc->sc_handle = aa->aa_node->ad_handle; 96 1.2.2.2 pgoyette msc->sc_iot = aa->aa_memt; 97 1.2.2.2 pgoyette vsc->sc_dev = self; 98 1.2.2.2 pgoyette vsc->sc_dmat = aa->aa_dmat; 99 1.2.2.2 pgoyette 100 1.2.2.2 pgoyette rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 101 1.2.2.2 pgoyette &res, &acpi_resource_parse_ops_default); 102 1.2.2.2 pgoyette if (ACPI_FAILURE(rv)) 103 1.2.2.2 pgoyette return; 104 1.2.2.2 pgoyette 105 1.2.2.2 pgoyette mem = acpi_res_mem(&res, 0); 106 1.2.2.2 pgoyette if (mem == NULL) { 107 1.2.2.2 pgoyette aprint_error_dev(self, "couldn't find mem resource\n"); 108 1.2.2.2 pgoyette goto done; 109 1.2.2.2 pgoyette } 110 1.2.2.2 pgoyette 111 1.2.2.2 pgoyette irq = acpi_res_irq(&res, 0); 112 1.2.2.2 pgoyette if (irq == NULL) { 113 1.2.2.2 pgoyette aprint_error_dev(self, "couldn't find irq resource\n"); 114 1.2.2.2 pgoyette goto done; 115 1.2.2.2 pgoyette } 116 1.2.2.2 pgoyette sc->sc_irq = irq->ar_irq; 117 1.2.2.2 pgoyette sc->sc_irqtype = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL; 118 1.2.2.2 pgoyette 119 1.2.2.2 pgoyette error = bus_space_map(msc->sc_iot, mem->ar_base, mem->ar_length, 0, &msc->sc_ioh); 120 1.2.2.2 pgoyette if (error) { 121 1.2.2.2 pgoyette aprint_error_dev(self, "couldn't map registers\n"); 122 1.2.2.2 pgoyette return; 123 1.2.2.2 pgoyette } 124 1.2.2.2 pgoyette msc->sc_iosize = mem->ar_length; 125 1.2.2.2 pgoyette 126 1.2.2.2 pgoyette msc->sc_setup_interrupts = virtio_acpi_setup_interrupts; 127 1.2.2.2 pgoyette msc->sc_free_interrupts = virtio_acpi_free_interrupts; 128 1.2.2.2 pgoyette 129 1.2.2.2 pgoyette virtio_mmio_common_attach(msc); 130 1.2.2.2 pgoyette virtio_acpi_rescan(self, "virtio", NULL); 131 1.2.2.2 pgoyette 132 1.2.2.2 pgoyette done: 133 1.2.2.2 pgoyette acpi_resource_cleanup(&res); 134 1.2.2.2 pgoyette } 135 1.2.2.2 pgoyette 136 1.2.2.2 pgoyette static int 137 1.2.2.2 pgoyette virtio_acpi_detach(device_t self, int flags) 138 1.2.2.2 pgoyette { 139 1.2.2.2 pgoyette struct virtio_acpi_softc * const sc = device_private(self); 140 1.2.2.2 pgoyette struct virtio_mmio_softc * const msc = &sc->sc_msc; 141 1.2.2.2 pgoyette 142 1.2.2.2 pgoyette return virtio_mmio_common_detach(msc, flags); 143 1.2.2.2 pgoyette } 144 1.2.2.2 pgoyette 145 1.2.2.2 pgoyette static int 146 1.2.2.2 pgoyette virtio_acpi_rescan(device_t self, const char *ifattr, const int *locs) 147 1.2.2.2 pgoyette { 148 1.2.2.2 pgoyette struct virtio_acpi_softc * const sc = device_private(self); 149 1.2.2.2 pgoyette struct virtio_mmio_softc * const msc = &sc->sc_msc; 150 1.2.2.2 pgoyette struct virtio_softc * const vsc = &msc->sc_sc; 151 1.2.2.2 pgoyette struct virtio_attach_args va; 152 1.2.2.2 pgoyette 153 1.2.2.2 pgoyette if (vsc->sc_child) 154 1.2.2.2 pgoyette return 0; 155 1.2.2.2 pgoyette 156 1.2.2.2 pgoyette memset(&va, 0, sizeof(va)); 157 1.2.2.2 pgoyette va.sc_childdevid = vsc->sc_childdevid; 158 1.2.2.2 pgoyette 159 1.2.2.2 pgoyette config_found_ia(self, ifattr, &va, virtiobusprint); 160 1.2.2.2 pgoyette 161 1.2.2.2 pgoyette return 0; 162 1.2.2.2 pgoyette } 163 1.2.2.2 pgoyette 164 1.2.2.2 pgoyette static int 165 1.2.2.2 pgoyette virtio_acpi_setup_interrupts(struct virtio_mmio_softc *msc) 166 1.2.2.2 pgoyette { 167 1.2.2.2 pgoyette struct virtio_acpi_softc * const sc = (struct virtio_acpi_softc *)msc; 168 1.2.2.2 pgoyette struct virtio_softc * const vsc = &msc->sc_sc; 169 1.2.2.2 pgoyette 170 1.2.2.2 pgoyette msc->sc_ih = acpi_intr_establish(vsc->sc_dev, (uint64_t)sc->sc_handle, 171 1.2.2.2 pgoyette IPL_VM, false, virtio_mmio_intr, msc, device_xname(vsc->sc_dev)); 172 1.2.2.2 pgoyette if (msc->sc_ih == NULL) { 173 1.2.2.2 pgoyette aprint_error_dev(vsc->sc_dev, "couldn't install interrupt handler\n"); 174 1.2.2.2 pgoyette return -1; 175 1.2.2.2 pgoyette } 176 1.2.2.2 pgoyette 177 1.2.2.2 pgoyette aprint_normal_dev(vsc->sc_dev, "interrupting on irq %d\n", sc->sc_irq); 178 1.2.2.2 pgoyette 179 1.2.2.2 pgoyette return 0; 180 1.2.2.2 pgoyette } 181 1.2.2.2 pgoyette 182 1.2.2.2 pgoyette static void 183 1.2.2.2 pgoyette virtio_acpi_free_interrupts(struct virtio_mmio_softc *msc) 184 1.2.2.2 pgoyette { 185 1.2.2.2 pgoyette if (msc->sc_ih != NULL) { 186 1.2.2.2 pgoyette acpi_intr_disestablish(msc->sc_ih); 187 1.2.2.2 pgoyette msc->sc_ih = NULL; 188 1.2.2.2 pgoyette } 189 1.2.2.2 pgoyette } 190
Indexes created Thu Oct 02 01:09:59 GMT 2025