gicv3_acpi.c revision 1.3.2.2
1 1.3.2.2 pgoyette /* $NetBSD: gicv3_acpi.c,v 1.3.2.2 2018/11/26 01:52:17 pgoyette Exp $ */ 2 1.3.2.2 pgoyette 3 1.3.2.2 pgoyette /*- 4 1.3.2.2 pgoyette * Copyright (c) 2018 The NetBSD Foundation, Inc. 5 1.3.2.2 pgoyette * All rights reserved. 6 1.3.2.2 pgoyette * 7 1.3.2.2 pgoyette * This code is derived from software contributed to The NetBSD Foundation 8 1.3.2.2 pgoyette * by Jared McNeill <jmcneill (at) invisible.ca>. 9 1.3.2.2 pgoyette * 10 1.3.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 11 1.3.2.2 pgoyette * modification, are permitted provided that the following conditions 12 1.3.2.2 pgoyette * are met: 13 1.3.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 14 1.3.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 15 1.3.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 16 1.3.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 17 1.3.2.2 pgoyette * documentation and/or other materials provided with the distribution. 18 1.3.2.2 pgoyette * 19 1.3.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.3.2.2 pgoyette * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.3.2.2 pgoyette * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.3.2.2 pgoyette * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.3.2.2 pgoyette * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.3.2.2 pgoyette * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.3.2.2 pgoyette * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.3.2.2 pgoyette * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.3.2.2 pgoyette * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.3.2.2 pgoyette * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.3.2.2 pgoyette * POSSIBILITY OF SUCH DAMAGE. 30 1.3.2.2 pgoyette */ 31 1.3.2.2 pgoyette 32 1.3.2.2 pgoyette #include "pci.h" 33 1.3.2.2 pgoyette 34 1.3.2.2 pgoyette #define _INTR_PRIVATE 35 1.3.2.2 pgoyette 36 1.3.2.2 pgoyette #include <sys/cdefs.h> 37 1.3.2.2 pgoyette __KERNEL_RCSID(0, "$NetBSD: gicv3_acpi.c,v 1.3.2.2 2018/11/26 01:52:17 pgoyette Exp $"); 38 1.3.2.2 pgoyette 39 1.3.2.2 pgoyette #include <sys/param.h> 40 1.3.2.2 pgoyette #include <sys/bus.h> 41 1.3.2.2 pgoyette #include <sys/cpu.h> 42 1.3.2.2 pgoyette #include <sys/kernel.h> 43 1.3.2.2 pgoyette #include <sys/device.h> 44 1.3.2.2 pgoyette #include <sys/kmem.h> 45 1.3.2.2 pgoyette 46 1.3.2.2 pgoyette #include <dev/acpi/acpireg.h> 47 1.3.2.2 pgoyette #include <dev/acpi/acpivar.h> 48 1.3.2.2 pgoyette 49 1.3.2.2 pgoyette #include <dev/fdt/fdtvar.h> 50 1.3.2.2 pgoyette 51 1.3.2.2 pgoyette #include <arm/cortex/gicv3.h> 52 1.3.2.2 pgoyette #include <arm/cortex/gicv3_its.h> 53 1.3.2.2 pgoyette #include <arm/cortex/gic_reg.h> 54 1.3.2.2 pgoyette 55 1.3.2.2 pgoyette #define GICD_SIZE 0x10000 56 1.3.2.2 pgoyette #define GICR_SIZE 0x20000 57 1.3.2.2 pgoyette #define GITS_SIZE 0x20000 58 1.3.2.2 pgoyette 59 1.3.2.2 pgoyette extern struct bus_space arm_generic_bs_tag; 60 1.3.2.2 pgoyette extern struct arm32_bus_dma_tag arm_generic_dma_tag; 61 1.3.2.2 pgoyette 62 1.3.2.2 pgoyette struct gicv3_acpi_softc { 63 1.3.2.2 pgoyette struct gicv3_softc sc_gic; 64 1.3.2.2 pgoyette 65 1.3.2.2 pgoyette ACPI_MADT_GENERIC_DISTRIBUTOR *sc_madt_gicd; 66 1.3.2.2 pgoyette }; 67 1.3.2.2 pgoyette 68 1.3.2.2 pgoyette static int gicv3_acpi_match(device_t, cfdata_t, void *); 69 1.3.2.2 pgoyette static void gicv3_acpi_attach(device_t, device_t, void *); 70 1.3.2.2 pgoyette 71 1.3.2.2 pgoyette static int gicv3_acpi_map_dist(struct gicv3_acpi_softc *); 72 1.3.2.2 pgoyette static int gicv3_acpi_map_redist(struct gicv3_acpi_softc *); 73 1.3.2.2 pgoyette #if NPCI > 0 74 1.3.2.2 pgoyette static int gicv3_acpi_map_its(struct gicv3_acpi_softc *); 75 1.3.2.2 pgoyette #endif 76 1.3.2.2 pgoyette 77 1.3.2.2 pgoyette CFATTACH_DECL_NEW(gicv3_acpi, sizeof(struct gicv3_acpi_softc), gicv3_acpi_match, gicv3_acpi_attach, NULL, NULL); 78 1.3.2.2 pgoyette 79 1.3.2.2 pgoyette static int 80 1.3.2.2 pgoyette gicv3_acpi_match(device_t parent, cfdata_t cf, void *aux) 81 1.3.2.2 pgoyette { 82 1.3.2.2 pgoyette ACPI_SUBTABLE_HEADER *hdrp = aux; 83 1.3.2.2 pgoyette ACPI_MADT_GENERIC_DISTRIBUTOR *gicd; 84 1.3.2.2 pgoyette 85 1.3.2.2 pgoyette if (hdrp->Type != ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR) 86 1.3.2.2 pgoyette return 0; 87 1.3.2.2 pgoyette 88 1.3.2.2 pgoyette gicd = (ACPI_MADT_GENERIC_DISTRIBUTOR *)hdrp; 89 1.3.2.2 pgoyette 90 1.3.2.2 pgoyette switch (gicd->Version) { 91 1.3.2.2 pgoyette case ACPI_MADT_GIC_VERSION_NONE: 92 1.3.2.2 pgoyette return __SHIFTOUT(reg_id_aa64pfr0_el1_read(), ID_AA64PFR0_EL1_GIC) == 1; 93 1.3.2.2 pgoyette case ACPI_MADT_GIC_VERSION_V3: 94 1.3.2.2 pgoyette case ACPI_MADT_GIC_VERSION_V4: 95 1.3.2.2 pgoyette return 1; 96 1.3.2.2 pgoyette default: 97 1.3.2.2 pgoyette return 0; 98 1.3.2.2 pgoyette } 99 1.3.2.2 pgoyette } 100 1.3.2.2 pgoyette 101 1.3.2.2 pgoyette static void 102 1.3.2.2 pgoyette gicv3_acpi_attach(device_t parent, device_t self, void *aux) 103 1.3.2.2 pgoyette { 104 1.3.2.2 pgoyette struct gicv3_acpi_softc * const sc = device_private(self); 105 1.3.2.2 pgoyette ACPI_MADT_GENERIC_DISTRIBUTOR *gicd = aux; 106 1.3.2.2 pgoyette int error; 107 1.3.2.2 pgoyette 108 1.3.2.2 pgoyette sc->sc_gic.sc_dev = self; 109 1.3.2.2 pgoyette sc->sc_gic.sc_bst = &arm_generic_bs_tag; 110 1.3.2.2 pgoyette sc->sc_gic.sc_dmat = &arm_generic_dma_tag; 111 1.3.2.2 pgoyette sc->sc_madt_gicd = gicd; 112 1.3.2.2 pgoyette 113 1.3.2.2 pgoyette aprint_naive("\n"); 114 1.3.2.2 pgoyette aprint_normal(": GICv3\n"); 115 1.3.2.2 pgoyette 116 1.3.2.2 pgoyette error = gicv3_acpi_map_dist(sc); 117 1.3.2.2 pgoyette if (error) { 118 1.3.2.2 pgoyette aprint_error_dev(self, "failed to map distributor: %d\n", error); 119 1.3.2.2 pgoyette return; 120 1.3.2.2 pgoyette } 121 1.3.2.2 pgoyette 122 1.3.2.2 pgoyette error = gicv3_acpi_map_redist(sc); 123 1.3.2.2 pgoyette if (error) { 124 1.3.2.2 pgoyette aprint_error_dev(self, "failed to map redistributor: %d\n", error); 125 1.3.2.2 pgoyette return; 126 1.3.2.2 pgoyette } 127 1.3.2.2 pgoyette 128 1.3.2.2 pgoyette error = gicv3_init(&sc->sc_gic); 129 1.3.2.2 pgoyette if (error) { 130 1.3.2.2 pgoyette aprint_error_dev(self, "failed to initialize GIC: %d\n", error); 131 1.3.2.2 pgoyette return; 132 1.3.2.2 pgoyette } 133 1.3.2.2 pgoyette 134 1.3.2.2 pgoyette #if NPCI > 0 135 1.3.2.2 pgoyette gicv3_acpi_map_its(sc); 136 1.3.2.2 pgoyette #endif 137 1.3.2.2 pgoyette 138 1.3.2.2 pgoyette arm_fdt_irq_set_handler(gicv3_irq_handler); 139 1.3.2.2 pgoyette } 140 1.3.2.2 pgoyette 141 1.3.2.2 pgoyette static int 142 1.3.2.2 pgoyette gicv3_acpi_map_dist(struct gicv3_acpi_softc *sc) 143 1.3.2.2 pgoyette { 144 1.3.2.2 pgoyette const bus_addr_t addr = sc->sc_madt_gicd->BaseAddress; 145 1.3.2.2 pgoyette const bus_size_t size = GICD_SIZE; 146 1.3.2.2 pgoyette int error; 147 1.3.2.2 pgoyette 148 1.3.2.2 pgoyette error = bus_space_map(sc->sc_gic.sc_bst, addr, size, 0, &sc->sc_gic.sc_bsh_d); 149 1.3.2.2 pgoyette if (error) 150 1.3.2.2 pgoyette return error; 151 1.3.2.2 pgoyette 152 1.3.2.2 pgoyette return 0; 153 1.3.2.2 pgoyette } 154 1.3.2.2 pgoyette 155 1.3.2.2 pgoyette static ACPI_STATUS 156 1.3.2.2 pgoyette gicv3_acpi_count_gicr(ACPI_SUBTABLE_HEADER *hdrp, void *aux) 157 1.3.2.2 pgoyette { 158 1.3.2.2 pgoyette ACPI_MADT_GENERIC_REDISTRIBUTOR *gicr; 159 1.3.2.2 pgoyette int *count = aux; 160 1.3.2.2 pgoyette 161 1.3.2.2 pgoyette if (hdrp->Type == ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR) { 162 1.3.2.2 pgoyette gicr = (ACPI_MADT_GENERIC_REDISTRIBUTOR *)hdrp; 163 1.3.2.2 pgoyette *count += howmany(gicr->Length, GICR_SIZE); 164 1.3.2.2 pgoyette } 165 1.3.2.2 pgoyette 166 1.3.2.2 pgoyette return AE_OK; 167 1.3.2.2 pgoyette } 168 1.3.2.2 pgoyette 169 1.3.2.2 pgoyette static ACPI_STATUS 170 1.3.2.2 pgoyette gicv3_acpi_map_gicr(ACPI_SUBTABLE_HEADER *hdrp, void *aux) 171 1.3.2.2 pgoyette { 172 1.3.2.2 pgoyette struct gicv3_acpi_softc * const sc = aux; 173 1.3.2.2 pgoyette ACPI_MADT_GENERIC_REDISTRIBUTOR *gicr; 174 1.3.2.2 pgoyette bus_space_handle_t bsh; 175 1.3.2.2 pgoyette bus_size_t off; 176 1.3.2.2 pgoyette 177 1.3.2.2 pgoyette if (hdrp->Type != ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR) 178 1.3.2.2 pgoyette return AE_OK; 179 1.3.2.2 pgoyette 180 1.3.2.2 pgoyette gicr = (ACPI_MADT_GENERIC_REDISTRIBUTOR *)hdrp; 181 1.3.2.2 pgoyette 182 1.3.2.2 pgoyette if (bus_space_map(sc->sc_gic.sc_bst, gicr->BaseAddress, gicr->Length, 0, &bsh) != 0) { 183 1.3.2.2 pgoyette aprint_error_dev(sc->sc_gic.sc_dev, "failed to map redistributor at 0x%" PRIx64 " len %#x\n", 184 1.3.2.2 pgoyette gicr->BaseAddress, gicr->Length); 185 1.3.2.2 pgoyette return AE_OK; 186 1.3.2.2 pgoyette } 187 1.3.2.2 pgoyette 188 1.3.2.2 pgoyette for (off = 0; off < gicr->Length; off += GICR_SIZE) { 189 1.3.2.2 pgoyette const int redist = sc->sc_gic.sc_bsh_r_count; 190 1.3.2.2 pgoyette if (bus_space_subregion(sc->sc_gic.sc_bst, bsh, off, GICR_SIZE, &sc->sc_gic.sc_bsh_r[redist]) != 0) { 191 1.3.2.2 pgoyette aprint_error_dev(sc->sc_gic.sc_dev, "couldn't subregion redistributor registers\n"); 192 1.3.2.2 pgoyette return AE_OK; 193 1.3.2.2 pgoyette } 194 1.3.2.2 pgoyette 195 1.3.2.2 pgoyette aprint_debug_dev(sc->sc_gic.sc_dev, "redist at 0x%" PRIx64 " [GICR]\n", gicr->BaseAddress + off); 196 1.3.2.2 pgoyette 197 1.3.2.2 pgoyette sc->sc_gic.sc_bsh_r_count++; 198 1.3.2.2 pgoyette 199 1.3.2.2 pgoyette /* If this is the last redist in this region, skip to the next one */ 200 1.3.2.2 pgoyette const uint32_t typer = bus_space_read_4(sc->sc_gic.sc_bst, sc->sc_gic.sc_bsh_r[redist], GICR_TYPER); 201 1.3.2.2 pgoyette if (typer & GICR_TYPER_Last) 202 1.3.2.2 pgoyette break; 203 1.3.2.2 pgoyette } 204 1.3.2.2 pgoyette 205 1.3.2.2 pgoyette return AE_OK; 206 1.3.2.2 pgoyette } 207 1.3.2.2 pgoyette 208 1.3.2.2 pgoyette static ACPI_STATUS 209 1.3.2.2 pgoyette gicv3_acpi_count_gicc(ACPI_SUBTABLE_HEADER *hdrp, void *aux) 210 1.3.2.2 pgoyette { 211 1.3.2.2 pgoyette ACPI_MADT_GENERIC_INTERRUPT *gicc; 212 1.3.2.2 pgoyette int *count = aux; 213 1.3.2.2 pgoyette 214 1.3.2.2 pgoyette if (hdrp->Type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) { 215 1.3.2.2 pgoyette gicc = (ACPI_MADT_GENERIC_INTERRUPT *)hdrp; 216 1.3.2.2 pgoyette if ((gicc->Flags & ACPI_MADT_ENABLED) != 0) 217 1.3.2.2 pgoyette (*count)++; 218 1.3.2.2 pgoyette } 219 1.3.2.2 pgoyette 220 1.3.2.2 pgoyette return AE_OK; 221 1.3.2.2 pgoyette } 222 1.3.2.2 pgoyette 223 1.3.2.2 pgoyette static ACPI_STATUS 224 1.3.2.2 pgoyette gicv3_acpi_map_gicc(ACPI_SUBTABLE_HEADER *hdrp, void *aux) 225 1.3.2.2 pgoyette { 226 1.3.2.2 pgoyette struct gicv3_acpi_softc * const sc = aux; 227 1.3.2.2 pgoyette ACPI_MADT_GENERIC_INTERRUPT *gicc; 228 1.3.2.2 pgoyette 229 1.3.2.2 pgoyette if (hdrp->Type != ACPI_MADT_TYPE_GENERIC_INTERRUPT) 230 1.3.2.2 pgoyette return AE_OK; 231 1.3.2.2 pgoyette 232 1.3.2.2 pgoyette gicc = (ACPI_MADT_GENERIC_INTERRUPT *)hdrp; 233 1.3.2.2 pgoyette if ((gicc->Flags & ACPI_MADT_ENABLED) == 0) 234 1.3.2.2 pgoyette return AE_OK; 235 1.3.2.2 pgoyette 236 1.3.2.2 pgoyette const int redist = sc->sc_gic.sc_bsh_r_count; 237 1.3.2.2 pgoyette if (bus_space_map(sc->sc_gic.sc_bst, gicc->GicrBaseAddress, GICR_SIZE, 0, &sc->sc_gic.sc_bsh_r[redist]) != 0) { 238 1.3.2.2 pgoyette aprint_error_dev(sc->sc_gic.sc_dev, "failed to map redistributor at 0x%" PRIx64 " len %#x\n", 239 1.3.2.2 pgoyette gicc->GicrBaseAddress, GICR_SIZE); 240 1.3.2.2 pgoyette return AE_OK; 241 1.3.2.2 pgoyette } 242 1.3.2.2 pgoyette 243 1.3.2.2 pgoyette aprint_debug_dev(sc->sc_gic.sc_dev, "redist at 0x%" PRIx64 " [GICC]\n", gicc->GicrBaseAddress); 244 1.3.2.2 pgoyette 245 1.3.2.2 pgoyette sc->sc_gic.sc_bsh_r_count++; 246 1.3.2.2 pgoyette 247 1.3.2.2 pgoyette return AE_OK; 248 1.3.2.2 pgoyette } 249 1.3.2.2 pgoyette 250 1.3.2.2 pgoyette static int 251 1.3.2.2 pgoyette gicv3_acpi_map_redist(struct gicv3_acpi_softc *sc) 252 1.3.2.2 pgoyette { 253 1.3.2.2 pgoyette bool use_gicr = false; 254 1.3.2.2 pgoyette int max_redist = 0; 255 1.3.2.2 pgoyette 256 1.3.2.2 pgoyette /* 257 1.3.2.2 pgoyette * Try to use GICR structures to describe redistributors. If no GICR 258 1.3.2.2 pgoyette * subtables are found, use the GICR address from the GICC subtables. 259 1.3.2.2 pgoyette */ 260 1.3.2.2 pgoyette acpi_madt_walk(gicv3_acpi_count_gicr, &max_redist); 261 1.3.2.2 pgoyette if (max_redist != 0) 262 1.3.2.2 pgoyette use_gicr = true; 263 1.3.2.2 pgoyette else 264 1.3.2.2 pgoyette acpi_madt_walk(gicv3_acpi_count_gicc, &max_redist); 265 1.3.2.2 pgoyette 266 1.3.2.2 pgoyette if (max_redist == 0) 267 1.3.2.2 pgoyette return ENODEV; 268 1.3.2.2 pgoyette 269 1.3.2.2 pgoyette sc->sc_gic.sc_bsh_r = kmem_alloc(sizeof(bus_space_handle_t) * max_redist, KM_SLEEP); 270 1.3.2.2 pgoyette if (use_gicr) 271 1.3.2.2 pgoyette acpi_madt_walk(gicv3_acpi_map_gicr, sc); 272 1.3.2.2 pgoyette else 273 1.3.2.2 pgoyette acpi_madt_walk(gicv3_acpi_map_gicc, sc); 274 1.3.2.2 pgoyette 275 1.3.2.2 pgoyette if (sc->sc_gic.sc_bsh_r_count == 0) 276 1.3.2.2 pgoyette return ENXIO; 277 1.3.2.2 pgoyette 278 1.3.2.2 pgoyette return 0; 279 1.3.2.2 pgoyette } 280 1.3.2.2 pgoyette 281 1.3.2.2 pgoyette #if NPCI > 0 282 1.3.2.2 pgoyette static ACPI_STATUS 283 1.3.2.2 pgoyette gicv3_acpi_map_gits(ACPI_SUBTABLE_HEADER *hdrp, void *aux) 284 1.3.2.2 pgoyette { 285 1.3.2.2 pgoyette struct gicv3_acpi_softc * const sc = aux; 286 1.3.2.2 pgoyette ACPI_MADT_GENERIC_TRANSLATOR *gits; 287 1.3.2.2 pgoyette bus_space_handle_t bsh; 288 1.3.2.2 pgoyette 289 1.3.2.2 pgoyette if (hdrp->Type != ACPI_MADT_TYPE_GENERIC_TRANSLATOR) 290 1.3.2.2 pgoyette return AE_OK; 291 1.3.2.2 pgoyette 292 1.3.2.2 pgoyette gits = (ACPI_MADT_GENERIC_TRANSLATOR *)hdrp; 293 1.3.2.2 pgoyette 294 1.3.2.2 pgoyette if (bus_space_map(sc->sc_gic.sc_bst, gits->BaseAddress, GITS_SIZE, 0, &bsh) != 0) { 295 1.3.2.2 pgoyette aprint_error_dev(sc->sc_gic.sc_dev, "failed to map ITS at 0x%" PRIx64 " len %#x\n", 296 1.3.2.2 pgoyette gits->BaseAddress, GITS_SIZE); 297 1.3.2.2 pgoyette return AE_OK; 298 1.3.2.2 pgoyette } 299 1.3.2.2 pgoyette 300 1.3.2.2 pgoyette aprint_normal_dev(sc->sc_gic.sc_dev, "ITS #%#x at 0x%" PRIx64 "\n", gits->TranslationId, gits->BaseAddress); 301 1.3.2.2 pgoyette 302 1.3.2.2 pgoyette gicv3_its_init(&sc->sc_gic, bsh, gits->BaseAddress, gits->TranslationId); 303 1.3.2.2 pgoyette 304 1.3.2.2 pgoyette return AE_OK; 305 1.3.2.2 pgoyette } 306 1.3.2.2 pgoyette 307 1.3.2.2 pgoyette static int 308 1.3.2.2 pgoyette gicv3_acpi_map_its(struct gicv3_acpi_softc *sc) 309 1.3.2.2 pgoyette { 310 1.3.2.2 pgoyette acpi_madt_walk(gicv3_acpi_map_gits, sc); 311 1.3.2.2 pgoyette 312 1.3.2.2 pgoyette return 0; 313 1.3.2.2 pgoyette } 314 1.3.2.2 pgoyette #endif 315
Indexes created Mon Oct 20 11:09:49 GMT 2025