diff options
| author | Anup Patel <apatel@ventanamicro.com> | 2023-06-15 10:33:44 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-06-18 18:54:33 +0300 |
| commit | 77cf33c17154b7f8151429f6ba32049afc49f9c3 (patch) | |
| tree | 2b649f96f432bc4513c4667618b414f67af88f02 /arch/riscv/include/asm/kvm_aia.h | |
| parent | 95c99104cb42bea5a0874c362f284ae4b91289dd (diff) | |
| download | linux-77cf33c17154b7f8151429f6ba32049afc49f9c3.tar.xz | |
RISC-V: KVM: Implement guest external interrupt line management
The RISC-V host will have one guest external interrupt line for each
VS-level IMSICs associated with a HART. The guest external interrupt
lines are per-HART resources and hypervisor can use HGEIE, HGEIP, and
HIE CSRs to manage these guest external interrupt lines.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/include/asm/kvm_aia.h')
| -rw-r--r-- | arch/riscv/include/asm/kvm_aia.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/kvm_aia.h b/arch/riscv/include/asm/kvm_aia.h index 1de0717112e5..0938e0cadf80 100644 --- a/arch/riscv/include/asm/kvm_aia.h +++ b/arch/riscv/include/asm/kvm_aia.h @@ -44,10 +44,15 @@ struct kvm_vcpu_aia { #define irqchip_in_kernel(k) ((k)->arch.aia.in_kernel) +extern unsigned int kvm_riscv_aia_nr_hgei; DECLARE_STATIC_KEY_FALSE(kvm_riscv_aia_available); #define kvm_riscv_aia_available() \ static_branch_unlikely(&kvm_riscv_aia_available) +static inline void kvm_riscv_vcpu_aia_imsic_release(struct kvm_vcpu *vcpu) +{ +} + #define KVM_RISCV_AIA_IMSIC_TOPEI (ISELECT_MASK + 1) static inline int kvm_riscv_vcpu_aia_imsic_rmw(struct kvm_vcpu *vcpu, unsigned long isel, @@ -119,6 +124,11 @@ static inline void kvm_riscv_aia_destroy_vm(struct kvm *kvm) { } +int kvm_riscv_aia_alloc_hgei(int cpu, struct kvm_vcpu *owner, + void __iomem **hgei_va, phys_addr_t *hgei_pa); +void kvm_riscv_aia_free_hgei(int cpu, int hgei); +void kvm_riscv_aia_wakeon_hgei(struct kvm_vcpu *owner, bool enable); + void kvm_riscv_aia_enable(void); void kvm_riscv_aia_disable(void); int kvm_riscv_aia_init(void); |