[PATCH v7 25/28] xen/arm: ITS: Add domain specific ITS initialization

[vijay.kilari@gmail.com]

From: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>

Call domain specific ITS initialization and introduce
callback in vgic for domain free

Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>
---
v7: - Deprecate use of gic_lpi_supported and instead use
      vgic_v3_hw.lpi_support
v6: - Moved vits_domain_free() out of this patch
---
 xen/arch/arm/vgic-v3.c     |   12 +++++++++++-
 xen/arch/arm/vgic.c        |    3 +++
 xen/include/asm-arm/vgic.h |    2 ++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/xen/arch/arm/vgic-v3.c b/xen/arch/arm/vgic-v3.c
index 4fd9c54..b85b6ee 100644
--- a/xen/arch/arm/vgic-v3.c
+++ b/xen/arch/arm/vgic-v3.c
@@ -1603,14 +1603,24 @@ static int vgic_v3_domain_init(struct domain *d)
     d->arch.vgic.ctlr = VGICD_CTLR_DEFAULT;
 
     if ( is_hardware_domain(d) && vgic_v3_hw.lpi_support )
-        d->arch.vgic.its_enabled = 1;
+    {
+        if ( !vits_domain_init(d) )
+            d->arch.vgic.its_enabled = 1;
+    }
 
     return 0;
 }
 
+void vgic_v3_domain_free(struct domain *d)
+{
+    if ( is_hardware_domain(d) && vgic_v3_hw.lpi_support )
+        vits_domain_free(d);
+}
+
 static const struct vgic_ops v3_ops = {
     .vcpu_init   = vgic_v3_vcpu_init,
     .domain_init = vgic_v3_domain_init,
+    .domain_free = vgic_v3_domain_free,
     .get_irq_priority = vgic_v3_get_irq_priority,
     .get_target_vcpu  = vgic_v3_get_target_vcpu,
     .emulate_sysreg  = vgic_v3_emulate_sysreg,
diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index ca9ecf0..f10c2cd 100644
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -174,6 +174,9 @@ void domain_vgic_free(struct domain *d)
     xfree(d->arch.vgic.shared_irqs);
     xfree(d->arch.vgic.pending_irqs);
     xfree(d->arch.vgic.allocated_irqs);
+
+    if ( d->arch.vgic.handler->domain_free )
+        d->arch.vgic.handler->domain_free(d);
 }
 
 int vcpu_vgic_init(struct vcpu *v)
diff --git a/xen/include/asm-arm/vgic.h b/xen/include/asm-arm/vgic.h
index 701556c..9fc261c 100644
--- a/xen/include/asm-arm/vgic.h
+++ b/xen/include/asm-arm/vgic.h
@@ -115,6 +115,8 @@ struct vgic_ops {
     int (*vcpu_init)(struct vcpu *v);
     /* Domain specific initialization of vGIC */
     int (*domain_init)(struct domain *d);
+    /* Free domain specific resources */
+    void (*domain_free)(struct domain *d);
     /* Get priority for a given irq stored in vgic structure */
     int (*get_irq_priority)(struct vcpu *v, unsigned int irq);
     /* Get the target vcpu for a given virq. The rank lock is already taken
-- 
1.7.9.5