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KVM: arm/arm64: vgic: Rely on the GIC driver to parse the firmware tables

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Currently, the firmware tables are parsed 2 times: once in the GIC
drivers, the other time when initializing the vGIC. It means code
duplication and make more tedious to add the support for another
firmware table (like ACPI).

Use the recently introduced helper gic_get_kvm_info() to get
information about the virtual GIC.

With this change, the virtual GIC becomes agnostic to the firmware
table and KVM will be able to initialize the vGIC on ACPI.

Signed-off-by: Julien Grall <julien.grall@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Julien Grall
2016-04-11 16:32:59 +01:00
committed by Christoffer Dall
parent 29c2d6ff4c
commit 503a62862e
4 changed files with 77 additions and 96 deletions
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7
include/kvm/arm_vgic.h
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@@ -25,6 +25,7 @@
#include <linux/spinlock.h>
#include <linux/types.h>
#include <kvm/iodev.h>
#include <linux/irqchip/arm-gic-common.h>
#define VGIC_NR_IRQS_LEGACY 256
#define VGIC_NR_SGIS 16
@@ -353,15 +354,15 @@ bool kvm_vgic_map_is_active(struct kvm_vcpu *vcpu, struct irq_phys_map *map);
#define vgic_initialized(k) (!!((k)->arch.vgic.nr_cpus))
#define vgic_ready(k) ((k)->arch.vgic.ready)
int vgic_v2_probe(struct device_node *vgic_node,
int vgic_v2_probe(const struct gic_kvm_info *gic_kvm_info,
const struct vgic_ops **ops,
const struct vgic_params **params);
#ifdef CONFIG_KVM_ARM_VGIC_V3
int vgic_v3_probe(struct device_node *vgic_node,
int vgic_v3_probe(const struct gic_kvm_info *gic_kvm_info,
const struct vgic_ops **ops,
const struct vgic_params **params);
#else
static inline int vgic_v3_probe(struct device_node *vgic_node,
static inline int vgic_v3_probe(const struct gic_kvm_info *gic_kvm_info,
const struct vgic_ops **ops,
const struct vgic_params **params)
{