Index: sys/arm/arm/pmu.h =================================================================== --- sys/arm/arm/pmu.h +++ sys/arm/arm/pmu.h @@ -33,7 +33,7 @@ #ifndef _ARM_PMU_H_ #define _ARM_PMU_H_ -#define MAX_RLEN 8 +#define MAX_RLEN MAXCPU struct pmu_intr { struct resource *res; Index: sys/arm/arm/pmu_acpi.c =================================================================== --- /dev/null +++ sys/arm/arm/pmu_acpi.c @@ -0,0 +1,180 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2021 Ruslan Bukin + * Copyright (c) 2020 Greg V + * + * 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 + +#include "acpi_bus_if.h" +#include "pmu.h" + +struct madt_ctx { + struct pmu_softc *sc; + 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 (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->pc_mpidr == intr->ArmMpidr) { + cpuid = i; + break; + } + } + + 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(device_get_parent(sc->dev), 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); + + /* + * BUS_CONFIG_INTR does nothing on arm64, so we manually set trigger + * mode. + */ + data = rman_get_virtual(sc->irq[ctx->i].res); + if (data->type == INTR_MAP_DATA_ACPI) { + 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; + } + + /* + * NOTE: AArch64 ACPI systems always use the GIC. + */ + if (intr->PerformanceInterrupt >= GIC_FIRST_SPI) + 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; + + 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); + } + + ctx.sc = sc; + ctx.i = 0; + acpi_walk_subtables(madt + 1, (char *)madt + madt->Header.Length, + madt_handler, &ctx); + + acpi_unmap_table(madt); + + 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, +}; + +static driver_t pmu_acpi_driver = { + "pmu", + pmu_acpi_methods, + sizeof(struct pmu_softc), +}; + +static devclass_t pmu_acpi_devclass; + +DRIVER_MODULE(pmu, acpi, pmu_acpi_driver, pmu_acpi_devclass, 0, 0); Index: sys/conf/files.arm64 =================================================================== --- sys/conf/files.arm64 +++ sys/conf/files.arm64 @@ -23,6 +23,7 @@ arm/arm/gic_if.m standard arm/arm/pmu.c standard arm/arm/pmu_fdt.c optional fdt +arm/arm/pmu_acpi.c optional acpi arm64/acpica/acpi_iort.c optional acpi arm64/acpica/acpi_machdep.c optional acpi arm64/acpica/OsdEnvironment.c optional acpi