[Xen-devel] [PATCH v5 19/22] hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ

[Shannon Zhao <zhaoshenglong@xxxxxxxxxx>]

From: Shannon Zhao <shannon.zhao@xxxxxxxxxx>

Add a new delivery type:
val[63:56] == 3: val[15:8] is flag: val[7:0] is a PPI.
To the flag, bit 8 stands the interrupt mode is edge(1) or level(0) and
bit 9 stands the interrupt polarity is active low(1) or high(0).

Cc: Jan Beulich <jbeulich@xxxxxxxx>
Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
---
v5: fix the statement
---
 xen/include/public/hvm/params.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h
index 73d4718..2ea8d62 100644
--- a/xen/include/public/hvm/params.h
+++ b/xen/include/public/hvm/params.h
@@ -55,6 +55,16 @@
  * if this delivery method is available.
  */
 
+#define HVM_PARAM_CALLBACK_TYPE_EVENT    3
+/*
+ * val[55:16] need to be zero.
+ * val[15:8] is flag of event-channel interrupt:
+ *  bit 8: interrupt is edge(1) or level(0) triggered
+ *  bit 9: 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



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel