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6027d27405
This patch adds irq number property for loongarch msi interrupt controller, and remove hard coding irq number macro. Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-Id: <20230104020518.2564263-2-zhaotianrui@loongson.cn> Signed-off-by: Song Gao <gaosong@loongson.cn>
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* QEMU Loongson 7A1000 msi interrupt controller.
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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/sysbus.h"
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#include "hw/irq.h"
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#include "hw/intc/loongarch_pch_msi.h"
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#include "hw/intc/loongarch_pch_pic.h"
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#include "hw/pci/msi.h"
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#include "hw/misc/unimp.h"
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#include "migration/vmstate.h"
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#include "trace.h"
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static uint64_t loongarch_msi_mem_read(void *opaque, hwaddr addr, unsigned size)
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{
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return 0;
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}
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static void loongarch_msi_mem_write(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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LoongArchPCHMSI *s = (LoongArchPCHMSI *)opaque;
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int irq_num;
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/*
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* vector number is irq number from upper extioi intc
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* need subtract irq base to get msi vector offset
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*/
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irq_num = (val & 0xff) - s->irq_base;
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trace_loongarch_msi_set_irq(irq_num);
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assert(irq_num < s->irq_num);
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qemu_set_irq(s->pch_msi_irq[irq_num], 1);
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}
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static const MemoryRegionOps loongarch_pch_msi_ops = {
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.read = loongarch_msi_mem_read,
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.write = loongarch_msi_mem_write,
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.endianness = DEVICE_LITTLE_ENDIAN,
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};
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static void pch_msi_irq_handler(void *opaque, int irq, int level)
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{
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LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(opaque);
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qemu_set_irq(s->pch_msi_irq[irq], level);
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}
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static void loongarch_pch_msi_realize(DeviceState *dev, Error **errp)
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{
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LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(dev);
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if (!s->irq_num || s->irq_num > PCH_MSI_IRQ_NUM) {
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error_setg(errp, "Invalid 'msi_irq_num'");
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return;
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}
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s->pch_msi_irq = g_new(qemu_irq, s->irq_num);
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qdev_init_gpio_out(dev, s->pch_msi_irq, s->irq_num);
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qdev_init_gpio_in(dev, pch_msi_irq_handler, s->irq_num);
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}
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static void loongarch_pch_msi_unrealize(DeviceState *dev)
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{
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LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(dev);
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g_free(s->pch_msi_irq);
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}
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static void loongarch_pch_msi_init(Object *obj)
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{
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LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(obj);
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SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
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memory_region_init_io(&s->msi_mmio, obj, &loongarch_pch_msi_ops,
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s, TYPE_LOONGARCH_PCH_MSI, 0x8);
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sysbus_init_mmio(sbd, &s->msi_mmio);
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msi_nonbroken = true;
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}
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static Property loongarch_msi_properties[] = {
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DEFINE_PROP_UINT32("msi_irq_base", LoongArchPCHMSI, irq_base, 0),
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DEFINE_PROP_UINT32("msi_irq_num", LoongArchPCHMSI, irq_num, 0),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void loongarch_pch_msi_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->realize = loongarch_pch_msi_realize;
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dc->unrealize = loongarch_pch_msi_unrealize;
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device_class_set_props(dc, loongarch_msi_properties);
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}
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static const TypeInfo loongarch_pch_msi_info = {
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.name = TYPE_LOONGARCH_PCH_MSI,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(LoongArchPCHMSI),
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.instance_init = loongarch_pch_msi_init,
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.class_init = loongarch_pch_msi_class_init,
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};
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static void loongarch_pch_msi_register_types(void)
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{
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type_register_static(&loongarch_pch_msi_info);
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}
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type_init(loongarch_pch_msi_register_types)
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