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90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* LoongArch kvm pch pic interrupt support
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*
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* Copyright (C) 2025 Loongson Technology Corporation Limited
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "hw/boards.h"
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#include "hw/intc/loongarch_pch_pic.h"
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#include "hw/loongarch/virt.h"
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#include "hw/pci-host/ls7a.h"
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#include "system/kvm.h"
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static void kvm_pch_pic_access_reg(int fd, uint64_t addr, void *val, bool write)
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{
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kvm_device_access(fd, KVM_DEV_LOONGARCH_PCH_PIC_GRP_REGS,
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addr, val, write, &error_abort);
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}
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static void kvm_pch_pic_access(void *opaque, bool write)
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{
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LoongArchPICCommonState *s = LOONGARCH_PIC_COMMON(opaque);
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LoongarchPICState *lps = LOONGARCH_PIC(opaque);
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int fd = lps->dev_fd;
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int addr, offset;
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if (fd == 0) {
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return;
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}
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kvm_pch_pic_access_reg(fd, PCH_PIC_INT_MASK, &s->int_mask, write);
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kvm_pch_pic_access_reg(fd, PCH_PIC_HTMSI_EN, &s->htmsi_en, write);
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kvm_pch_pic_access_reg(fd, PCH_PIC_INT_EDGE, &s->intedge, write);
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kvm_pch_pic_access_reg(fd, PCH_PIC_AUTO_CTRL0, &s->auto_crtl0, write);
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kvm_pch_pic_access_reg(fd, PCH_PIC_AUTO_CTRL1, &s->auto_crtl1, write);
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for (addr = PCH_PIC_ROUTE_ENTRY;
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addr < PCH_PIC_ROUTE_ENTRY_END; addr++) {
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offset = addr - PCH_PIC_ROUTE_ENTRY;
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kvm_pch_pic_access_reg(fd, addr, &s->route_entry[offset], write);
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}
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for (addr = PCH_PIC_HTMSI_VEC; addr < PCH_PIC_HTMSI_VEC_END; addr++) {
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offset = addr - PCH_PIC_HTMSI_VEC;
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kvm_pch_pic_access_reg(fd, addr, &s->htmsi_vector[offset], write);
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}
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kvm_pch_pic_access_reg(fd, PCH_PIC_INT_REQUEST, &s->intirr, write);
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kvm_pch_pic_access_reg(fd, PCH_PIC_INT_STATUS, &s->intisr, write);
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kvm_pch_pic_access_reg(fd, PCH_PIC_INT_POL, &s->int_polarity, write);
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}
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int kvm_pic_get(void *opaque)
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{
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kvm_pch_pic_access(opaque, false);
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return 0;
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}
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int kvm_pic_put(void *opaque, int version_id)
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{
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kvm_pch_pic_access(opaque, true);
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return 0;
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}
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void kvm_pic_realize(DeviceState *dev, Error **errp)
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{
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LoongarchPICState *lps = LOONGARCH_PIC(dev);
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uint64_t pch_pic_base = VIRT_PCH_REG_BASE;
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int ret;
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ret = kvm_create_device(kvm_state, KVM_DEV_TYPE_LOONGARCH_PCHPIC, false);
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if (ret < 0) {
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fprintf(stderr, "Create KVM_LOONGARCH_PCHPIC failed: %s\n",
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strerror(-ret));
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abort();
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}
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lps->dev_fd = ret;
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ret = kvm_device_access(lps->dev_fd, KVM_DEV_LOONGARCH_PCH_PIC_GRP_CTRL,
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KVM_DEV_LOONGARCH_PCH_PIC_CTRL_INIT,
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&pch_pic_base, true, NULL);
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if (ret < 0) {
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fprintf(stderr, "KVM_LOONGARCH_PCH_PIC_INIT failed: %s\n",
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strerror(-ret));
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abort();
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}
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}
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