[Xen-devel] [PATCH v5 14/16] public/hvm/params.h: Add macros for HVM_PARAM_CALLBACK_TYPE_PPI

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

Add macros for HVM_PARAM_CALLBACK_TYPE_PPI operation values and update
them in evtchn_fixup().

Also use HVM_PARAM_CALLBACK_IRQ_TYPE_SHIFT in hvm_set_callback_via().

Cc: Jan Beulich <jbeulich@xxxxxxxx>
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
---
 xen/arch/arm/domain_build.c     | 8 +++++---
 xen/arch/x86/hvm/irq.c          | 2 +-
 xen/include/public/hvm/params.h | 3 +++
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 60db9e4..494115b 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -2019,9 +2019,11 @@ static void evtchn_fixup(struct domain *d, struct 
kernel_info *kinfo)
            d->arch.evtchn_irq);
 
     /* Set the value of domain param HVM_PARAM_CALLBACK_IRQ */
-    val = (u64)HVM_PARAM_CALLBACK_TYPE_PPI << 56;
-    val |= (2 << 8); /* Active-low level-sensitive  */
-    val |= d->arch.evtchn_irq & 0xff;
+    val = (u64)HVM_PARAM_CALLBACK_TYPE_PPI << 
HVM_PARAM_CALLBACK_IRQ_TYPE_SHIFT;
+    /* Active-low level-sensitive  */
+    val |= (HVM_PARAM_CALLBACK_TYPE_PPI_FLAG_LOW_LEVEL <<
+            HVM_PARAM_CALLBACK_TYPE_PPI_FLAG_SHIFT);
+    val |= d->arch.evtchn_irq;
     d->arch.hvm_domain.params[HVM_PARAM_CALLBACK_IRQ] = val;
 
     /*
diff --git a/xen/arch/x86/hvm/irq.c b/xen/arch/x86/hvm/irq.c
index 5323d7c..7c5836b 100644
--- a/xen/arch/x86/hvm/irq.c
+++ b/xen/arch/x86/hvm/irq.c
@@ -325,7 +325,7 @@ void hvm_set_callback_via(struct domain *d, uint64_t via)
     unsigned int gsi=0, pdev=0, pintx=0;
     uint8_t via_type;
 
-    via_type = (uint8_t)(via >> 56) + 1;
+    via_type = (uint8_t)(via >> HVM_PARAM_CALLBACK_IRQ_TYPE_SHIFT) + 1;
     if ( ((via_type == HVMIRQ_callback_gsi) && (via == 0)) ||
          (via_type > HVMIRQ_callback_vector) )
         via_type = HVMIRQ_callback_none;
diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h
index f7338a3..a161de1 100644
--- a/xen/include/public/hvm/params.h
+++ b/xen/include/public/hvm/params.h
@@ -30,6 +30,7 @@
  */
 
 #define HVM_PARAM_CALLBACK_IRQ 0
+#define HVM_PARAM_CALLBACK_IRQ_TYPE_SHIFT     56
 /*
  * How should CPU0 event-channel notifications be delivered?
  *
@@ -66,6 +67,8 @@
  * This is only used by ARM/ARM64 and masking/eoi the interrupt associated to
  * the notification is handled by the interrupt controller.
  */
+#define HVM_PARAM_CALLBACK_TYPE_PPI_FLAG_SHIFT     8
+#define HVM_PARAM_CALLBACK_TYPE_PPI_FLAG_LOW_LEVEL 2
 #endif
 
 /*
-- 
2.0.4



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