diff options
| author | Song Gao <gaosong@loongson.cn> | 2026-04-09 18:56:37 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2026-04-09 18:56:37 +0800 |
| commit | 229132c309d667bb05405fc8b539e7d90e0dfb3b (patch) | |
| tree | b2baae17ef31902c6dde4b998b70746d41649885 /arch/loongarch/include | |
| parent | c43dce6f13fb12144571c168c7a593e5e546f3b5 (diff) | |
LoongArch: KVM: Add DMSINTC device support
Add device model for DMSINTC interrupt controller, implement basic
create/destroy/set_attr interfaces, and register device model to kvm
device table.
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/include')
| -rw-r--r-- | arch/loongarch/include/asm/kvm_dmsintc.h | 24 | ||||
| -rw-r--r-- | arch/loongarch/include/asm/kvm_host.h | 3 | ||||
| -rw-r--r-- | arch/loongarch/include/uapi/asm/kvm.h | 4 |
3 files changed, 31 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/kvm_dmsintc.h b/arch/loongarch/include/asm/kvm_dmsintc.h new file mode 100644 index 000000000000..3c5ec9805ed4 --- /dev/null +++ b/arch/loongarch/include/asm/kvm_dmsintc.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2025 Loongson Technology Corporation Limited + */ + +#ifndef __ASM_KVM_DMSINTC_H +#define __ASM_KVM_DMSINTC_H + +#include <linux/kvm_types.h> + +struct loongarch_dmsintc { + struct kvm *kvm; + uint64_t msg_addr_base; + uint64_t msg_addr_size; + uint32_t cpu_mask; +}; + +struct dmsintc_state { + atomic64_t vector_map[4]; +}; + +int kvm_loongarch_register_dmsintc_device(void); + +#endif diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include/asm/kvm_host.h index 19eb5e5c3984..130cedbb6b39 100644 --- a/arch/loongarch/include/asm/kvm_host.h +++ b/arch/loongarch/include/asm/kvm_host.h @@ -20,6 +20,7 @@ #include <asm/inst.h> #include <asm/kvm_mmu.h> #include <asm/kvm_ipi.h> +#include <asm/kvm_dmsintc.h> #include <asm/kvm_eiointc.h> #include <asm/kvm_pch_pic.h> #include <asm/loongarch.h> @@ -133,6 +134,7 @@ struct kvm_arch { s64 time_offset; struct kvm_context __percpu *vmcs; struct loongarch_ipi *ipi; + struct loongarch_dmsintc *dmsintc; struct loongarch_eiointc *eiointc; struct loongarch_pch_pic *pch_pic; }; @@ -247,6 +249,7 @@ struct kvm_vcpu_arch { struct kvm_mp_state mp_state; /* ipi state */ struct ipi_state ipi_state; + struct dmsintc_state dmsintc_state; /* cpucfg */ u32 cpucfg[KVM_MAX_CPUCFG_REGS]; diff --git a/arch/loongarch/include/uapi/asm/kvm.h b/arch/loongarch/include/uapi/asm/kvm.h index 419647aacdf3..cd0b5c11ca9c 100644 --- a/arch/loongarch/include/uapi/asm/kvm.h +++ b/arch/loongarch/include/uapi/asm/kvm.h @@ -155,4 +155,8 @@ struct kvm_iocsr_entry { #define KVM_DEV_LOONGARCH_PCH_PIC_GRP_CTRL 0x40000006 #define KVM_DEV_LOONGARCH_PCH_PIC_CTRL_INIT 0 +#define KVM_DEV_LOONGARCH_DMSINTC_GRP_CTRL 0x40000007 +#define KVM_DEV_LOONGARCH_DMSINTC_MSG_ADDR_BASE 0x0 +#define KVM_DEV_LOONGARCH_DMSINTC_MSG_ADDR_SIZE 0x1 + #endif /* __UAPI_ASM_LOONGARCH_KVM_H */ |