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[Xen-devel,RFC,24/35] arm : acpi add xen environment table

Message ID 1423058539-26403-25-git-send-email-parth.dixit@linaro.org
State New
Headers show

Commit Message

Parth Dixit Feb. 4, 2015, 2:02 p.m. UTC 
From: Parth Dixit <parth.dixit@linaro.org>

Xen environment table is ACPI table that is used to pass grant table
and event channel interrupt information to dom0.

Signed-off-by: Parth Dixit <parth.dixit@linaro.org>
---
 xen/include/acpi/actbl2.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
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Patch

diff --git a/xen/include/acpi/actbl2.h b/xen/include/acpi/actbl2.h
index 38e35d6..129ce70 100644
--- a/xen/include/acpi/actbl2.h
+++ b/xen/include/acpi/actbl2.h
@@ -80,6 +80,7 @@ 
 #define ACPI_SIG_WDDT           "WDDT"	/* Watchdog Timer Description Table */
 #define ACPI_SIG_WDRT           "WDRT"	/* Watchdog Resource Table */
 #define ACPI_SIG_STAO           "STAO"  /* Status Override Table */
+#define ACPI_SIG_XENV           "XENV"  /* Xen Environment Table */
 
 #ifdef ACPI_UNDEFINED_TABLES
 /*
@@ -910,6 +911,21 @@  struct acpi_table_stao {
 
 /*******************************************************************************
  *
+ * XENV - Xen Environment Table
+ *        Version 1
+ *
+ ******************************************************************************/
+
+struct acpi_table_xenv {
+    struct acpi_table_header header;    /* Common ACPI table header */
+    u64 gnt_start;    /* Starting address of Xen grant table region */
+    u64 gnt_size;     /* Size of Xen grant table region */
+    u32 evt_intr;    /* Xen event channel interrupt */
+    u8  evt_intr_flag;    /* Flags for event channel interrupt */
+};
+
+/*******************************************************************************
+ *
  * WAET - Windows ACPI Emulated devices Table
  *        Version 1
  *