[qemu-s390x] [PATCH v3 1/2] vfio-ccw: new capability chain support

[Cornelia Huck]

To be replaced with a real linux-headers update.

Signed-off-by: Cornelia Huck <address@hidden>
---
 linux-headers/linux/vfio.h     |  4 ++++
 linux-headers/linux/vfio_ccw.h | 12 ++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/linux-headers/linux/vfio.h b/linux-headers/linux/vfio.h
index 12a7b1dc53c8..24f505199f83 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -353,6 +353,10 @@ struct vfio_region_gfx_edid {
 #define VFIO_DEVICE_GFX_LINK_STATE_DOWN  2
 };
 
+#define VFIO_REGION_TYPE_CCW                   (2)
+/* ccw sub-types */
+#define VFIO_REGION_SUBTYPE_CCW_ASYNC_CMD      (1)
+
 /*
  * 10de vendor sub-type
  *
diff --git a/linux-headers/linux/vfio_ccw.h b/linux-headers/linux/vfio_ccw.h
index 5bf96c3812d2..fcc3e69ef526 100644
--- a/linux-headers/linux/vfio_ccw.h
+++ b/linux-headers/linux/vfio_ccw.h
@@ -12,6 +12,7 @@
 
 #include <linux/types.h>
 
+/* used for START SUBCHANNEL, always present */
 struct ccw_io_region {
 #define ORB_AREA_SIZE 12
        __u8    orb_area[ORB_AREA_SIZE];
@@ -22,4 +23,15 @@ struct ccw_io_region {
        __u32   ret_code;
 } __attribute__((packed));
 
+/*
+ * used for processing commands that trigger asynchronous actions
+ * Note: this is controlled by a capability
+ */
+#define VFIO_CCW_ASYNC_CMD_HSCH (1 << 0)
+#define VFIO_CCW_ASYNC_CMD_CSCH (1 << 1)
+struct ccw_cmd_region {
+       __u32 command;
+       __u32 ret_code;
+} __attribute__((packed));
+
 #endif
-- 
2.17.2