Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1327449 > unrolled thread

[PATCH v4 09/17] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  [PATCH v4 09/17] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ Shannon Zhao <zhaoshenglong@huawei.com> - 2016-02-05 04:20 +0100

#1327449 — [PATCH v4 09/17] xen/hvm/params: Add a new delivery type for event-channel in HVM_PARAM_CALLBACK_IRQ

From: Shannon Zhao <shannon.zhao@linaro.org>

Add a new delivery 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).

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
 include/xen/interface/hvm/params.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/xen/interface/hvm/params.h b/include/xen/interface/hvm/params.h
index 70ad208..5dd629f 100644
--- a/include/xen/interface/hvm/params.h
+++ b/include/xen/interface/hvm/params.h
@@ -53,6 +53,15 @@
  * 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.
+ */
+
 #define HVM_PARAM_STORE_PFN    1
 #define HVM_PARAM_STORE_EVTCHN 2
 
-- 
2.0.4

[toc] | [standalone]

Back to top | Article view | linux.kernel

csiph-web