[Xen-devel] [PATCH v4 21/24] hvm/params: Add a new dilivery type for event-channel in HVM_PARAM_CALLBACK_IRQ

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

Add a new dilivery type:
val[63:56] == 3: val[15:8] is flag: val[7:0] is a PPI.
To the flag, bit 0 stands the interrupt mode is edge(1) or level(0) and
bit 1 stands the interrupt polarity is active low(1) or high(0).

Cc: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
---
v4: rebase on master
---
 xen/include/public/hvm/params.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h
index 81f9451..382a79d 100644
--- a/xen/include/public/hvm/params.h
+++ b/xen/include/public/hvm/params.h
@@ -55,6 +55,15 @@
  * if this delivery method is available.
  */
 
+#define HVM_PARAM_CALLBACK_TYPE_EVENT    3
+/*
+ * val[15:8] is flag of event-channel interrupt:
+ *  bit 0: interrupt is edge(1) or level(0) triggered
+ *  bit 1: interrupt is active low(1) or high(0)
+ * val[7:0] is PPI number used by event-channel.
+ * This is only used by ARM/ARM64.
+ */
+
 /*
  * These are not used by Xen. They are here for convenience of HVM-guest
  * xenbus implementations.
-- 
2.0.4



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