[Xen-devel] [PATCH v8 25/28] xen/arm: ITS: Add domain specific ITS initialization

[<vijayak@xxxxxxxxxxxxxxxxxx>]

From: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>

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

Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@xxxxxxxxxxxxxxxxxx>
---
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, 17 insertions(+)

diff --git a/xen/arch/arm/vgic-v3.c b/xen/arch/arm/vgic-v3.c
index aa3c5ed..8c1877f 100644
--- a/xen/arch/arm/vgic-v3.c
+++ b/xen/arch/arm/vgic-v3.c
@@ -1830,6 +1830,11 @@ static int vgic_v3_domain_init(struct domain *d)
     d->arch.vgic.ctlr = VGICD_CTLR_DEFAULT;
 
     spin_lock_init(&d->arch.vgic.prop_lock);
+    if ( is_hardware_domain(d) && vgic_v3_hw.its_support )
+    {
+        if ( vits_domain_init(d) )
+            return -ENODEV;
+    }
 
     if ( is_hardware_domain(d) && vgic_v3_hw.its_support )
     {
@@ -1843,9 +1848,16 @@ static int vgic_v3_domain_init(struct domain *d)
     return 0;
 }
 
+void vgic_v3_domain_free(struct domain *d)
+{
+    if ( is_hardware_domain(d) && vgic_v3_hw.its_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,
     .emulate_sysreg  = vgic_v3_emulate_sysreg,
     /*
      * We use both AFF1 and AFF0 in (v)MPIDR. Thus, the max number of CPU
diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index e0ae5a5..c35501b 100644
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -198,6 +198,9 @@ void domain_vgic_free(struct domain *d)
     if ( vgic_is_lpi_supported(d) && d->arch.vgic.prop_page != NULL )
         free_xenheap_pages(d->arch.vgic.prop_page,
                            get_order_from_bytes(d->arch.vgic.prop_size));
+
+    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 5e194b7..7c1af7d 100644
--- a/xen/include/asm-arm/vgic.h
+++ b/xen/include/asm-arm/vgic.h
@@ -128,6 +128,8 @@ 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);
     /* vGIC sysreg emulation */
     int (*emulate_sysreg)(struct cpu_user_regs *regs, union hsr hsr);
     /* Maximum number of vCPU supported */
-- 
1.7.9.5


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