leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

KVM: ARM: vgic: add the GICv3 backend

Browse Source 
Introduce the support code for emulating a GICv2 on top of GICv3
hardware.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier
2013-07-12 15:15:23 +01:00
committed by Christoffer Dall
parent ac3c3747e2
commit b2fb1c0d37
4 changed files with 290 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
include/kvm/arm_vgic.h
View File

@@ -33,6 +33,7 @@
#define VGIC_MAX_CPUS KVM_MAX_VCPUS
#define VGIC_V2_MAX_LRS (1 << 6)
#define VGIC_V3_MAX_LRS 16
/* Sanity checks... */
#if (VGIC_MAX_CPUS > 8)
@@ -72,6 +73,7 @@ struct kvm_vcpu;
enum vgic_type {
VGIC_V2, /* Good ol' GICv2 */
VGIC_V3, /* New fancy GICv3 */
};
#define LR_STATE_PENDING (1 << 0)
@@ -172,6 +174,19 @@ struct vgic_v2_cpu_if {
u32 vgic_lr[VGIC_V2_MAX_LRS];
};
struct vgic_v3_cpu_if {
#ifdef CONFIG_ARM_GIC_V3
u32 vgic_hcr;
u32 vgic_vmcr;
u32 vgic_misr; /* Saved only */
u32 vgic_eisr; /* Saved only */
u32 vgic_elrsr; /* Saved only */
u32 vgic_ap0r[4];
u32 vgic_ap1r[4];
u64 vgic_lr[VGIC_V3_MAX_LRS];
#endif
};
struct vgic_cpu {
#ifdef CONFIG_KVM_ARM_VGIC
/* per IRQ to LR mapping */
@@ -190,6 +205,7 @@ struct vgic_cpu {
/* CPU vif control registers for world switch */
union {
struct vgic_v2_cpu_if vgic_v2;
struct vgic_v3_cpu_if vgic_v3;
};
#endif
};
@@ -224,6 +240,18 @@ bool vgic_handle_mmio(struct kvm_vcpu *vcpu, struct kvm_run *run,
int vgic_v2_probe(struct device_node *vgic_node,
const struct vgic_ops **ops,
const struct vgic_params **params);
#ifdef CONFIG_ARM_GIC_V3
int vgic_v3_probe(struct device_node *vgic_node,
const struct vgic_ops **ops,
const struct vgic_params **params);
#else
static inline int vgic_v3_probe(struct device_node *vgic_node,
const struct vgic_ops **ops,
const struct vgic_params **params)
{
return -ENODEV;
}
#endif
#else
static inline int kvm_vgic_hyp_init(void)