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[v10,09/17] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ

Message ID 1459525755-36968-10-git-send-email-shannon.zhao@linaro.org
State Accepted
Commit 383ff518a79fe3dcece579b9d30be77b219d10f8
Headers show

Commit Message

Shannon Zhao April 1, 2016, 3:49 p.m. UTC 
This new delivery type which is for ARM shares the same value with
HVM_PARAM_CALLBACK_TYPE_VECTOR which is for x86.

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).

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>

Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

---
 include/xen/interface/hvm/params.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

-- 
2.1.4

Comments

Julien Grall April 6, 2016, 12:29 p.m. UTC | #1 
Hi Shannon,

On 01/04/2016 16:49, Shannon Zhao wrote:
> This new delivery type which is for ARM shares the same value with

> HVM_PARAM_CALLBACK_TYPE_VECTOR which is for x86.

>

> 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).

>

> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>

> Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>


Reviewed-by: Julien Grall <julien.grall@arm.com>


Regards,

-- 
Julien Grall
diff mbox

Patch

diff --git a/include/xen/interface/hvm/params.h b/include/xen/interface/hvm/params.h
index 70ad208..4d61fc5 100644
--- a/include/xen/interface/hvm/params.h
+++ b/include/xen/interface/hvm/params.h
@@ -47,11 +47,24 @@ 
  * Domain = val[47:32], Bus = val[31:16] DevFn = val[15:8], IntX = val[1:0]
  */
 
+#if defined(__i386__) || defined(__x86_64__)
 #define HVM_PARAM_CALLBACK_TYPE_VECTOR   2
 /*
  * val[7:0] is a vector number.  Check for XENFEAT_hvm_callback_vector to know
  * if this delivery method is available.
  */
+#elif defined(__arm__) || defined(__aarch64__)
+#define HVM_PARAM_CALLBACK_TYPE_PPI      2
+/*
+ * val[55:16] needs to be zero.
+ * val[15:8] is interrupt flag of the PPI used by event-channel:
+ *  bit 8: the PPI is edge(1) or level(0) triggered
+ *  bit 9: the PPI is active low(1) or high(0)
+ * val[7:0] is a PPI number used by event-channel.
+ * This is only used by ARM/ARM64 and masking/eoi the interrupt associated to
+ * the notification is handled by the interrupt controller.
+ */
+#endif
 
 #define HVM_PARAM_STORE_PFN    1
 #define HVM_PARAM_STORE_EVTCHN 2