fa6d4d7137
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Bibo Mao <maobibo@loongson.cn> Tested-by: Bibo Mao <maobibo@loongson.cn> Acked-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Message-Id: <20240718133312.10324-19-philmd@linaro.org>
91 lines
2.7 KiB
C
91 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Loongson ipi interrupt support
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*
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* Copyright (C) 2021 Loongson Technology Corporation Limited
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*/
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#include "qemu/osdep.h"
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#include "hw/intc/loongson_ipi.h"
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#include "qapi/error.h"
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#include "target/mips/cpu.h"
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static AddressSpace *get_iocsr_as(CPUState *cpu)
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{
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if (ase_lcsr_available(&MIPS_CPU(cpu)->env)) {
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return &MIPS_CPU(cpu)->env.iocsr.as;
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}
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return NULL;
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}
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static const MemoryRegionOps loongson_ipi_core_ops = {
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.read_with_attrs = loongson_ipi_core_readl,
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.write_with_attrs = loongson_ipi_core_writel,
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.impl.min_access_size = 4,
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.impl.max_access_size = 4,
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.valid.min_access_size = 4,
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.valid.max_access_size = 8,
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.endianness = DEVICE_LITTLE_ENDIAN,
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};
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static void loongson_ipi_realize(DeviceState *dev, Error **errp)
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{
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LoongsonIPICommonState *sc = LOONGSON_IPI_COMMON(dev);
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LoongsonIPIState *s = LOONGSON_IPI(dev);
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LoongsonIPIClass *lic = LOONGSON_IPI_GET_CLASS(dev);
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SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
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Error *local_err = NULL;
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lic->parent_realize(dev, &local_err);
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if (local_err) {
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error_propagate(errp, local_err);
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return;
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}
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s->ipi_mmio_mem = g_new0(MemoryRegion, sc->num_cpu);
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for (unsigned i = 0; i < sc->num_cpu; i++) {
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g_autofree char *name = g_strdup_printf("loongson_ipi_cpu%d_mmio", i);
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memory_region_init_io(&s->ipi_mmio_mem[i], OBJECT(dev),
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&loongson_ipi_core_ops, &sc->cpu[i], name, 0x48);
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sysbus_init_mmio(sbd, &s->ipi_mmio_mem[i]);
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}
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}
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static void loongson_ipi_unrealize(DeviceState *dev)
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{
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LoongsonIPIState *s = LOONGSON_IPI(dev);
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LoongsonIPIClass *k = LOONGSON_IPI_GET_CLASS(dev);
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g_free(s->ipi_mmio_mem);
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k->parent_unrealize(dev);
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}
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static void loongson_ipi_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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LoongsonIPIClass *lic = LOONGSON_IPI_CLASS(klass);
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LoongsonIPICommonClass *licc = LOONGSON_IPI_COMMON_CLASS(klass);
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device_class_set_parent_realize(dc, loongson_ipi_realize,
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&lic->parent_realize);
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device_class_set_parent_unrealize(dc, loongson_ipi_unrealize,
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&lic->parent_unrealize);
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licc->get_iocsr_as = get_iocsr_as;
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licc->cpu_by_arch_id = cpu_by_arch_id;
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}
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static const TypeInfo loongson_ipi_types[] = {
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{
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.name = TYPE_LOONGSON_IPI,
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.parent = TYPE_LOONGSON_IPI_COMMON,
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.instance_size = sizeof(LoongsonIPIState),
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.class_size = sizeof(LoongsonIPIClass),
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.class_init = loongson_ipi_class_init,
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}
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};
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DEFINE_TYPES(loongson_ipi_types)
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