diff --git a/sys/arm/arm/pmu_acpi.c b/sys/arm/arm/pmu_acpi.c index 8812ac7b3af4..f11eacb5059d 100644 --- a/sys/arm/arm/pmu_acpi.c +++ b/sys/arm/arm/pmu_acpi.c @@ -1,193 +1,192 @@ /*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2020 Greg V * Copyright (c) 2021 Ruslan Bukin * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include "acpi_bus_if.h" #include "pmu.h" struct madt_ctx { struct pmu_softc *sc; int error; int i; }; static void madt_handler(ACPI_SUBTABLE_HEADER *entry, void *arg) { ACPI_MADT_GENERIC_INTERRUPT *intr; struct intr_map_data_acpi *ad; struct intr_map_data *data; struct madt_ctx *ctx; struct pmu_softc *sc; struct pcpu *pcpu; int rid; int cpuid; int i; ctx = arg; sc = ctx->sc; rid = ctx->i; cpuid = -1; if (ctx->error) return; if (entry->Type != ACPI_MADT_TYPE_GENERIC_INTERRUPT) return; intr = (ACPI_MADT_GENERIC_INTERRUPT *)entry; for (i = 0; i < MAXCPU; i++) { pcpu = pcpu_find(i); if (pcpu != NULL && PCPU_GET_MPIDR(pcpu) == intr->ArmMpidr) { cpuid = i; break; } } if (cpuid == -1) { /* pcpu not found. */ device_printf(sc->dev, "MADT: could not find pcpu, " "ArmMpidr %lx\n", intr->ArmMpidr); - ctx->error = ENODEV; return; } if (bootverbose) device_printf(sc->dev, "MADT: cpu %d (mpidr %lu) irq %d " "%s-triggered\n", cpuid, intr->ArmMpidr, intr->PerformanceInterrupt, (intr->Flags & ACPI_MADT_PERFORMANCE_IRQ_MODE) ? "edge" : "level"); bus_set_resource(sc->dev, SYS_RES_IRQ, ctx->i, intr->PerformanceInterrupt, 1); sc->irq[ctx->i].res = bus_alloc_resource_any(sc->dev, SYS_RES_IRQ, &rid, RF_ACTIVE | RF_SHAREABLE); if (sc->irq[ctx->i].res == NULL) { device_printf(sc->dev, "Failed to allocate IRQ %d\n", ctx->i); ctx->error = ENXIO; return; } /* * BUS_CONFIG_INTR does nothing on arm64, so we manually set trigger * mode. */ data = rman_get_virtual(sc->irq[ctx->i].res); KASSERT(data->type == INTR_MAP_DATA_ACPI, ("Wrong data type")); ad = (struct intr_map_data_acpi *)data; ad->trig = (intr->Flags & ACPI_MADT_PERFORMANCE_IRQ_MODE) ? INTR_TRIGGER_EDGE : INTR_TRIGGER_LEVEL; ad->pol = INTR_POLARITY_HIGH; if (!intr_is_per_cpu(sc->irq[ctx->i].res)) sc->irq[ctx->i].cpuid = cpuid; ctx->i++; } static void pmu_acpi_identify(driver_t *driver, device_t parent) { device_t dev; if (acpi_find_table(ACPI_SIG_MADT) == 0) return; dev = BUS_ADD_CHILD(parent, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LAST, "pmu", -1); if (dev == NULL) device_printf(parent, "pmu: Unable to add pmu child\n"); } static int pmu_acpi_probe(device_t dev) { device_set_desc(dev, "Performance Monitoring Unit"); return (BUS_PROBE_NOWILDCARD); } static int pmu_acpi_attach(device_t dev) { struct pmu_softc *sc; struct madt_ctx ctx; ACPI_TABLE_MADT *madt; int i; sc = device_get_softc(dev); sc->dev = dev; madt = acpi_map_table(acpi_find_table(ACPI_SIG_MADT), ACPI_SIG_MADT); if (madt == NULL) { device_printf(dev, "Unable to map the MADT table\n"); return (ENXIO); } /* We have to initialize cpuid to -1. */ for (i = 0; i < MAX_RLEN; i++) sc->irq[i].cpuid = -1; ctx.sc = sc; ctx.i = 0; ctx.error = 0; acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length, madt_handler, &ctx); acpi_unmap_table(madt); if (ctx.error) return (ctx.error); return (pmu_attach(dev)); } static device_method_t pmu_acpi_methods[] = { DEVMETHOD(device_identify, pmu_acpi_identify), DEVMETHOD(device_probe, pmu_acpi_probe), DEVMETHOD(device_attach, pmu_acpi_attach), DEVMETHOD_END, }; DEFINE_CLASS_0(pmu, pmu_acpi_driver, pmu_acpi_methods, sizeof(struct pmu_softc)); DRIVER_MODULE(pmu, acpi, pmu_acpi_driver, 0, 0);