Re: [PATCH 1/2] vfio-ccw: new capability chain support

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On 22/11/2018 17:54, Cornelia Huck wrote:
To be replaced with a real linux-headers update.

Signed-off-by: Cornelia Huck <cohuck@xxxxxxxxxx>
---
  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 ceb6453394..c9ba8d52a0 100644
--- a/linux-headers/linux/vfio.h
+++ b/linux-headers/linux/vfio.h
@@ -297,12 +297,16 @@ struct vfio_region_info_cap_type {
#define VFIO_REGION_TYPE_PCI_VENDOR_TYPE (1 << 31)
  #define VFIO_REGION_TYPE_PCI_VENDOR_MASK	(0xffff)
+#define VFIO_REGION_TYPE_CCW			(1 << 30)
/* 8086 Vendor sub-types */
  #define VFIO_REGION_SUBTYPE_INTEL_IGD_OPREGION	(1)
  #define VFIO_REGION_SUBTYPE_INTEL_IGD_HOST_CFG	(2)
  #define VFIO_REGION_SUBTYPE_INTEL_IGD_LPC_CFG	(3)
+/* ccw sub-types */
+#define VFIO_REGION_SUBTYPE_CCW_ASYNC_CMD	(1)
+
  /*
   * The MSIX mappable capability informs that MSIX data of a BAR can be mmapped
   * which allows direct access to non-MSIX registers which happened to be within
diff --git a/linux-headers/linux/vfio_ccw.h b/linux-headers/linux/vfio_ccw.h
index 5bf96c3812..fcc3e69ef5 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


LGTM

--
Pierre Morel
Linux/KVM/QEMU in Böblingen - Germany




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