[PATCH v6 4/6] drm/xe/uapi: Define drm_xe_vm_get_faults

[Jonathan Cavitt <jonathan.cavitt@xxxxxxxxx>]

Add initial declarations for the drm_xe_vm_get_faults ioctl.

Signed-off-by: Jonathan Cavitt <jonathan.cavitt@xxxxxxxxx>
---
 include/uapi/drm/xe_drm.h | 49 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/include/uapi/drm/xe_drm.h b/include/uapi/drm/xe_drm.h
index 616916985e3f..90c2fcdbd5c1 100644
--- a/include/uapi/drm/xe_drm.h
+++ b/include/uapi/drm/xe_drm.h
@@ -81,6 +81,7 @@ extern "C" {
  *  - &DRM_IOCTL_XE_EXEC
  *  - &DRM_IOCTL_XE_WAIT_USER_FENCE
  *  - &DRM_IOCTL_XE_OBSERVATION
+ *  - %DRM_IOCTL_XE_VM_GET_FAULTS
  */
 
 /*
@@ -102,6 +103,7 @@ extern "C" {
 #define DRM_XE_EXEC			0x09
 #define DRM_XE_WAIT_USER_FENCE		0x0a
 #define DRM_XE_OBSERVATION		0x0b
+#define DRM_XE_VM_GET_FAULTS		0x0c
 
 /* Must be kept compact -- no holes */
 
@@ -117,6 +119,7 @@ extern "C" {
 #define DRM_IOCTL_XE_EXEC			DRM_IOW(DRM_COMMAND_BASE + DRM_XE_EXEC, struct drm_xe_exec)
 #define DRM_IOCTL_XE_WAIT_USER_FENCE		DRM_IOWR(DRM_COMMAND_BASE + DRM_XE_WAIT_USER_FENCE, struct drm_xe_wait_user_fence)
 #define DRM_IOCTL_XE_OBSERVATION		DRM_IOW(DRM_COMMAND_BASE + DRM_XE_OBSERVATION, struct drm_xe_observation_param)
+#define DRM_IOCTL_XE_VM_GET_FAULTS		DRM_IOWR(DRM_COMMAND_BASE + DRM_XE_VM_GET_FAULTS, struct drm_xe_vm_get_faults)
 
 /**
  * DOC: Xe IOCTL Extensions
@@ -1189,6 +1192,52 @@ struct drm_xe_vm_bind {
 	__u64 reserved[2];
 };
 
+struct xe_vm_fault {
+	/** @address: Address of the fault, if relevant */
+	__u64 address;
+#define DRM_XE_FAULT_ADDRESS_TYPE_NONE_EXT		0
+#define DRM_XE_FAULT_ADDRESS_TYPE_READ_INVALID_EXT	1
+#define DRM_XE_FAULT_ADDRESS_TYPE_WRITE_INVALID_EXT	2
+	/** @address_type: , if relevant */
+	__u32 address_type;
+	/**
+	 * @address_precision: Precision of faulted address, if relevant.
+	 * Currently only SZ_4K.
+	 */
+	__u32 address_precision;
+	/** @reserved: MBZ */
+	__u64 reserved[3];
+};
+
+/**
+ * struct drm_xe_vm_get_faults - Input of &DRM_IOCTL_XE_VM_GET_FAULTS
+ *
+ * The user provides a VM ID, and the ioctl will
+ *
+ */
+struct drm_xe_vm_get_faults {
+	/** @extensions: Pointer to the first extension struct, if any */
+	__u64 extensions;
+
+	/** @vm_id: The ID of the VM to query the properties of */
+	__u32 vm_id;
+
+	/** @size: Size to allocate for @ptr */
+	__u32 size;
+
+	/** @fault_count: Number of faults to be returned */
+	__u32 fault_count;
+
+	/** @pad: MBZ */
+	__u32 pad;
+
+	/** @reserved: MBZ */
+	__u64 reserved[2];
+
+	/** @faults: Pointer to user-defined array of xe_vm_fault of flexible size */
+	__u64 faults;
+};
+
 /**
  * struct drm_xe_exec_queue_create - Input of &DRM_IOCTL_XE_EXEC_QUEUE_CREATE
  *
-- 
2.43.0