diff options
| author | Xianglai Li <lixianglai@loongson.cn> | 2024-11-13 16:18:27 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2024-11-13 16:18:27 +0800 |
| commit | c532de5a67a70f8533d495f8f2aaa9a0491c3ad0 (patch) | |
| tree | 6fbd03a6ec613859e75a7f125bffe81197dd188a /arch/loongarch/include/asm | |
| parent | 948ccbd95016f50ce01df5eef9440eede3b8c713 (diff) | |
LoongArch: KVM: Add IPI device support
Add device model for IPI interrupt controller, implement basic create &
destroy interfaces, and register device model to kvm device table.
Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn>
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch/include/asm')
| -rw-r--r-- | arch/loongarch/include/asm/kvm_host.h | 4 | ||||
| -rw-r--r-- | arch/loongarch/include/asm/kvm_ipi.h | 33 |
2 files changed, 37 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include/asm/kvm_host.h index d6bb72424027..8e5393d21fcb 100644 --- a/arch/loongarch/include/asm/kvm_host.h +++ b/arch/loongarch/include/asm/kvm_host.h @@ -18,6 +18,7 @@ #include <asm/inst.h> #include <asm/kvm_mmu.h> +#include <asm/kvm_ipi.h> #include <asm/loongarch.h> /* Loongarch KVM register ids */ @@ -117,6 +118,7 @@ struct kvm_arch { s64 time_offset; struct kvm_context __percpu *vmcs; + struct loongarch_ipi *ipi; }; #define CSR_MAX_NUMS 0x800 @@ -221,6 +223,8 @@ struct kvm_vcpu_arch { int last_sched_cpu; /* mp state */ struct kvm_mp_state mp_state; + /* ipi state */ + struct ipi_state ipi_state; /* cpucfg */ u32 cpucfg[KVM_MAX_CPUCFG_REGS]; diff --git a/arch/loongarch/include/asm/kvm_ipi.h b/arch/loongarch/include/asm/kvm_ipi.h new file mode 100644 index 000000000000..baaa6253e4dc --- /dev/null +++ b/arch/loongarch/include/asm/kvm_ipi.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2024 Loongson Technology Corporation Limited + */ + +#ifndef __ASM_KVM_IPI_H +#define __ASM_KVM_IPI_H + +#include <kvm/iodev.h> + +#define LARCH_INT_IPI 12 + +struct loongarch_ipi { + spinlock_t lock; + struct kvm *kvm; + struct kvm_io_device device; +}; + +struct ipi_state { + spinlock_t lock; + uint32_t status; + uint32_t en; + uint32_t set; + uint32_t clear; + uint64_t buf[4]; +}; + +#define IOCSR_IPI_BASE 0x1000 +#define IOCSR_IPI_SIZE 0x160 + +int kvm_loongarch_register_ipi_device(void); + +#endif |