diff options
| author | Anup Patel <apatel@ventanamicro.com> | 2023-06-15 10:33:48 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2023-06-18 18:54:40 +0300 |
| commit | 00f918f61c56a46d9e09ce21b54b8c21f496c753 (patch) | |
| tree | 3b1c10db07bf425d56fd2cbe736d9f010375fbec /arch/riscv/include | |
| parent | f0607e6215b2329bb8f3117b34ccfc6447e14f22 (diff) | |
| download | linux-00f918f61c56a46d9e09ce21b54b8c21f496c753.tar.xz | |
RISC-V: KVM: Skeletal in-kernel AIA irqchip support
To incrementally implement in-kernel AIA irqchip support, we first
add minimal skeletal support which only compiles but does not provide
any functionality.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/kvm_aia.h | 20 | ||||
| -rw-r--r-- | arch/riscv/include/asm/kvm_host.h | 4 | ||||
| -rw-r--r-- | arch/riscv/include/uapi/asm/kvm.h | 4 |
3 files changed, 28 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/kvm_aia.h b/arch/riscv/include/asm/kvm_aia.h index 0938e0cadf80..3bc0a0e47a15 100644 --- a/arch/riscv/include/asm/kvm_aia.h +++ b/arch/riscv/include/asm/kvm_aia.h @@ -45,6 +45,7 @@ struct kvm_vcpu_aia { #define irqchip_in_kernel(k) ((k)->arch.aia.in_kernel) extern unsigned int kvm_riscv_aia_nr_hgei; +extern unsigned int kvm_riscv_aia_max_ids; DECLARE_STATIC_KEY_FALSE(kvm_riscv_aia_available); #define kvm_riscv_aia_available() \ static_branch_unlikely(&kvm_riscv_aia_available) @@ -116,6 +117,25 @@ static inline void kvm_riscv_vcpu_aia_deinit(struct kvm_vcpu *vcpu) { } +static inline int kvm_riscv_aia_inject_msi_by_id(struct kvm *kvm, + u32 hart_index, + u32 guest_index, u32 iid) +{ + return 0; +} + +static inline int kvm_riscv_aia_inject_msi(struct kvm *kvm, + struct kvm_msi *msi) +{ + return 0; +} + +static inline int kvm_riscv_aia_inject_irq(struct kvm *kvm, + unsigned int irq, bool level) +{ + return 0; +} + static inline void kvm_riscv_aia_init_vm(struct kvm *kvm) { } diff --git a/arch/riscv/include/asm/kvm_host.h b/arch/riscv/include/asm/kvm_host.h index ee0acccb1d3b..871432586a63 100644 --- a/arch/riscv/include/asm/kvm_host.h +++ b/arch/riscv/include/asm/kvm_host.h @@ -27,6 +27,8 @@ #define KVM_VCPU_MAX_FEATURES 0 +#define KVM_IRQCHIP_NUM_PINS 1024 + #define KVM_REQ_SLEEP \ KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) #define KVM_REQ_VCPU_RESET KVM_ARCH_REQ(1) @@ -318,6 +320,8 @@ int kvm_riscv_gstage_vmid_init(struct kvm *kvm); bool kvm_riscv_gstage_vmid_ver_changed(struct kvm_vmid *vmid); void kvm_riscv_gstage_vmid_update(struct kvm_vcpu *vcpu); +int kvm_riscv_setup_default_irq_routing(struct kvm *kvm, u32 lines); + void __kvm_riscv_unpriv_trap(void); unsigned long kvm_riscv_vcpu_unpriv_read(struct kvm_vcpu *vcpu, diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h index f92790c9481a..332d4a274891 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -15,6 +15,7 @@ #include <asm/bitsperlong.h> #include <asm/ptrace.h> +#define __KVM_HAVE_IRQ_LINE #define __KVM_HAVE_READONLY_MEM #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 @@ -203,6 +204,9 @@ enum KVM_RISCV_SBI_EXT_ID { #define KVM_REG_RISCV_SBI_MULTI_REG_LAST \ KVM_REG_RISCV_SBI_MULTI_REG(KVM_RISCV_SBI_EXT_MAX - 1) +/* One single KVM irqchip, ie. the AIA */ +#define KVM_NR_IRQCHIPS 1 + #endif #endif /* __LINUX_KVM_RISCV_H */ |