1b758e289SBibo Mao /* SPDX-License-Identifier: GPL-2.0-or-later */ 2b758e289SBibo Mao /* 3b758e289SBibo Mao * LoongArch kvm pch pic interrupt support 4b758e289SBibo Mao * 5b758e289SBibo Mao * Copyright (C) 2025 Loongson Technology Corporation Limited 6b758e289SBibo Mao */ 7b758e289SBibo Mao 8b758e289SBibo Mao #include "qemu/osdep.h" 9b758e289SBibo Mao #include "qapi/error.h" 10b758e289SBibo Mao #include "hw/boards.h" 11b758e289SBibo Mao #include "hw/intc/loongarch_pch_pic.h" 12b758e289SBibo Mao #include "hw/loongarch/virt.h" 13b758e289SBibo Mao #include "hw/pci-host/ls7a.h" 14b758e289SBibo Mao #include "system/kvm.h" 15b758e289SBibo Mao 1611a04c9fSBibo Mao static void kvm_pch_pic_access_reg(int fd, uint64_t addr, void *val, bool write) 1711a04c9fSBibo Mao { 1811a04c9fSBibo Mao kvm_device_access(fd, KVM_DEV_LOONGARCH_PCH_PIC_GRP_REGS, 1911a04c9fSBibo Mao addr, val, write, &error_abort); 2011a04c9fSBibo Mao } 2111a04c9fSBibo Mao 2211a04c9fSBibo Mao static void kvm_pch_pic_access(void *opaque, bool write) 2311a04c9fSBibo Mao { 2411a04c9fSBibo Mao LoongArchPICCommonState *s = LOONGARCH_PIC_COMMON(opaque); 2511a04c9fSBibo Mao LoongarchPICState *lps = LOONGARCH_PIC(opaque); 2611a04c9fSBibo Mao int fd = lps->dev_fd; 2711a04c9fSBibo Mao int addr, offset; 2811a04c9fSBibo Mao 29*c642ddf1SBibo Mao if (fd == 0) { 30*c642ddf1SBibo Mao return; 31*c642ddf1SBibo Mao } 32*c642ddf1SBibo Mao 3311a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, PCH_PIC_INT_MASK, &s->int_mask, write); 3411a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, PCH_PIC_HTMSI_EN, &s->htmsi_en, write); 3511a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, PCH_PIC_INT_EDGE, &s->intedge, write); 3611a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, PCH_PIC_AUTO_CTRL0, &s->auto_crtl0, write); 3711a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, PCH_PIC_AUTO_CTRL1, &s->auto_crtl1, write); 3811a04c9fSBibo Mao 3911a04c9fSBibo Mao for (addr = PCH_PIC_ROUTE_ENTRY; 4011a04c9fSBibo Mao addr < PCH_PIC_ROUTE_ENTRY_END; addr++) { 4111a04c9fSBibo Mao offset = addr - PCH_PIC_ROUTE_ENTRY; 4211a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, addr, &s->route_entry[offset], write); 4311a04c9fSBibo Mao } 4411a04c9fSBibo Mao 4511a04c9fSBibo Mao for (addr = PCH_PIC_HTMSI_VEC; addr < PCH_PIC_HTMSI_VEC_END; addr++) { 4611a04c9fSBibo Mao offset = addr - PCH_PIC_HTMSI_VEC; 4711a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, addr, &s->htmsi_vector[offset], write); 4811a04c9fSBibo Mao } 4911a04c9fSBibo Mao 5011a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, PCH_PIC_INT_REQUEST, &s->intirr, write); 5111a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, PCH_PIC_INT_STATUS, &s->intisr, write); 5211a04c9fSBibo Mao kvm_pch_pic_access_reg(fd, PCH_PIC_INT_POL, &s->int_polarity, write); 5311a04c9fSBibo Mao } 5411a04c9fSBibo Mao 5511a04c9fSBibo Mao int kvm_pic_get(void *opaque) 5611a04c9fSBibo Mao { 5711a04c9fSBibo Mao kvm_pch_pic_access(opaque, false); 5811a04c9fSBibo Mao return 0; 5911a04c9fSBibo Mao } 6011a04c9fSBibo Mao 6111a04c9fSBibo Mao int kvm_pic_put(void *opaque, int version_id) 6211a04c9fSBibo Mao { 6311a04c9fSBibo Mao kvm_pch_pic_access(opaque, true); 6411a04c9fSBibo Mao return 0; 6511a04c9fSBibo Mao } 6611a04c9fSBibo Mao 67b758e289SBibo Mao void kvm_pic_realize(DeviceState *dev, Error **errp) 68b758e289SBibo Mao { 69b758e289SBibo Mao LoongarchPICState *lps = LOONGARCH_PIC(dev); 70b758e289SBibo Mao uint64_t pch_pic_base = VIRT_PCH_REG_BASE; 71b758e289SBibo Mao int ret; 72b758e289SBibo Mao 73b758e289SBibo Mao ret = kvm_create_device(kvm_state, KVM_DEV_TYPE_LOONGARCH_PCHPIC, false); 74b758e289SBibo Mao if (ret < 0) { 75b758e289SBibo Mao fprintf(stderr, "Create KVM_LOONGARCH_PCHPIC failed: %s\n", 76b758e289SBibo Mao strerror(-ret)); 77b758e289SBibo Mao abort(); 78b758e289SBibo Mao } 79b758e289SBibo Mao 80b758e289SBibo Mao lps->dev_fd = ret; 81b758e289SBibo Mao ret = kvm_device_access(lps->dev_fd, KVM_DEV_LOONGARCH_PCH_PIC_GRP_CTRL, 82b758e289SBibo Mao KVM_DEV_LOONGARCH_PCH_PIC_CTRL_INIT, 83b758e289SBibo Mao &pch_pic_base, true, NULL); 84b758e289SBibo Mao if (ret < 0) { 85b758e289SBibo Mao fprintf(stderr, "KVM_LOONGARCH_PCH_PIC_INIT failed: %s\n", 86b758e289SBibo Mao strerror(-ret)); 87b758e289SBibo Mao abort(); 88b758e289SBibo Mao } 89b758e289SBibo Mao } 90