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[v8,20/28] xen/arm: ITS: Add virtual ITS availability check helper

Message ID 1454318798-31913-21-git-send-email-vijayak@caviumnetworks.com (mailing list archive)
State New, archived
Headers show

Commit Message

vijayak@caviumnetworks.com Feb. 1, 2016, 9:26 a.m. UTC 
From: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>

Introduce vgic_is_lpi_supported() helper function
to know virtual ITS availability for a domain

Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>
---
v8: - Dropped its_enabled field
v7: - its_enabled field is added to vgic structure
---
 xen/arch/arm/vgic.c        |    5 +++++
 xen/include/asm-arm/vgic.h |    1 +
 2 files changed, 6 insertions(+)
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Patch

diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index f813931..2d89b7c 100644
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -62,6 +62,11 @@  struct vgic_irq_rank *vgic_rank_irq(struct vcpu *v, unsigned int irq)
     return vgic_get_rank(v, rank);
 }
 
+bool_t vgic_is_lpi_supported(struct domain *d)
+{
+    return (d->arch.vgic.nr_lpis != 0);
+}
+
 static void vgic_init_pending_irq(struct pending_irq *p, unsigned int virq)
 {
     INIT_LIST_HEAD(&p->inflight);
diff --git a/xen/include/asm-arm/vgic.h b/xen/include/asm-arm/vgic.h
index f13adfd..35d06b8 100644
--- a/xen/include/asm-arm/vgic.h
+++ b/xen/include/asm-arm/vgic.h
@@ -311,6 +311,7 @@  extern int vgic_emulate(struct cpu_user_regs *regs, union hsr hsr);
 extern void vgic_disable_irqs(struct vcpu *v, uint32_t r, int n);
 extern void vgic_enable_irqs(struct vcpu *v, uint32_t r, int n);
 extern void register_vgic_ops(struct domain *d, const struct vgic_ops *ops);
+extern bool_t vgic_is_lpi_supported(struct domain *d);
 int vgic_v2_init(struct domain *d);
 int vgic_v3_init(struct domain *d);