feature: experimental api to hint msix allocation

Related-To: NEO-8179

Signed-off-by: Bartosz Dunajski <bartosz.dunajski@intel.com>

level_zero/include/ze_intel_gpu.h

@@ -136,6 +136,26 @@ typedef struct _zex_intel_event_sync_mode_exp_desc_t {
     uint32_t externalInterruptId;                        /// <in> External interrupt id. Used only when ZEX_INTEL_EVENT_SYNC_MODE_EXP_FLAG_EXTERNAL_INTERRUPT_WAIT flag is set
 } zex_intel_event_sync_mode_exp_desc_t;
 
+///////////////////////////////////////////////////////////////////////////////
+/// @brief Forward-declare zex_intel_queue_allocate_msix_hint_exp_desc_t
+typedef struct _zex_intel_queue_allocate_msix_hint_exp_desc_t zex_intel_queue_allocate_msix_hint_exp_desc_t;
+
+///////////////////////////////////////////////////////////////////////////////
+/// @brief Command queue descriptor for allocating unique msix. This structure may be
+/// passed as pNext member of ::ze_command_queue_desc_t.
+
+typedef struct _zex_intel_queue_allocate_msix_hint_exp_desc_t {
+    ze_structure_type_t stype; ///< [in] type of this structure
+    const void *pNext;         ///< [in][optional] must be null or a pointer to an extension-specific
+                               ///< structure (i.e. contains stype and pNext).
+    ze_bool_t uniqueMsix;      ///< [in] If set, try to allocate unique msix for command queue.
+                               ///< If not set, driver will follow default behaviour. It may share msix for signaling completion with other queues.
+                               ///< Number of unique msixes may be limited. On unsuccessful allocation, queue or immediate cmd list creation API fallbacks to default behaviour.
+
+} zex_intel_queue_allocate_msix_hint_exp_desc_t;
+
+#define ZEX_INTEL_STRUCTURE_TYPE_QUEUE_ALLOCATE_MSIX_HINT_EXP_PROPERTIES (ze_structure_type_t)0x00030018
+
 #if defined(__cplusplus)
 } // extern "C"
 #endif