intel: Move anv_gem_supports_syncobj_wait to common code.

This will let me use this in iris.

We leave the existing anv function for anv_gem_stubs.c faking, but
move the contents to a helper in a new src/intel/common/gen_gem.c file.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3802>

src/intel/Makefile.sources

@@ -18,6 +18,7 @@ COMMON_FILES = \
 	common/gen_disasm.c \
 	common/gen_disasm.h \
 	common/gen_defines.h \
+	common/gen_gem.c \
 	common/gen_gem.h \
 	common/gen_guardband.h \
 	common/gen_l3_config.c \

src/intel/common/gen_gem.c

@@ -0,0 +1,57 @@
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include "gen_gem.h"
+#include "drm-uapi/i915_drm.h"
+
+bool
+gen_gem_supports_syncobj_wait(int fd)
+{
+   int ret;
+
+   struct drm_syncobj_create create = {
+      .flags = 0,
+   };
+   ret = gen_ioctl(fd, DRM_IOCTL_SYNCOBJ_CREATE, &create);
+   if (ret)
+      return false;
+
+   uint32_t syncobj = create.handle;
+
+   struct drm_syncobj_wait wait = {
+      .handles = (uint64_t)(uintptr_t)&create,
+      .count_handles = 1,
+      .timeout_nsec = 0,
+      .flags = DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT,
+   };
+   ret = gen_ioctl(fd, DRM_IOCTL_SYNCOBJ_WAIT, &wait);
+
+   struct drm_syncobj_destroy destroy = {
+      .handle = syncobj,
+   };
+   gen_ioctl(fd, DRM_IOCTL_SYNCOBJ_DESTROY, &destroy);
+
+   /* If it timed out, then we have the ioctl and it supports the
+    * DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT flag.
+    */
+   return ret == -1 && errno == ETIME;
+}

src/intel/common/gen_gem.h

@@ -25,6 +25,7 @@
 #define GEN_GEM_H
 
 #include <errno.h>
+#include <stdbool.h>
 #include <stdint.h>
 #include <unistd.h>
 #include <sys/ioctl.h>
@@ -71,4 +72,6 @@ gen_ioctl(int fd, unsigned long request, void *arg)
     return ret;
 }
 
+bool gen_gem_supports_syncobj_wait(int fd);
+
 #endif /* GEN_GEM_H */

src/intel/common/meson.build

@@ -30,6 +30,7 @@ files_libintel_common = files(
   'gen_decoder.h',
   'gen_disasm.c',
   'gen_disasm.h',
+  'gen_gem.c',
   'gen_gem.h',
   'gen_guardband.h',
   'gen_l3_config.c',

src/intel/vulkan/anv_gem.c

@@ -572,34 +572,7 @@ anv_gem_syncobj_reset(struct anv_device *device, uint32_t handle)
 bool
 anv_gem_supports_syncobj_wait(int fd)
 {
-   int ret;
+   return gen_gem_supports_syncobj_wait(fd);
-
-   struct drm_syncobj_create create = {
-      .flags = 0,
-   };
-   ret = gen_ioctl(fd, DRM_IOCTL_SYNCOBJ_CREATE, &create);
-   if (ret)
-      return false;
-
-   uint32_t syncobj = create.handle;
-
-   struct drm_syncobj_wait wait = {
-      .handles = (uint64_t)(uintptr_t)&create,
-      .count_handles = 1,
-      .timeout_nsec = 0,
-      .flags = DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT,
-   };
-   ret = gen_ioctl(fd, DRM_IOCTL_SYNCOBJ_WAIT, &wait);
-
-   struct drm_syncobj_destroy destroy = {
-      .handle = syncobj,
-   };
-   gen_ioctl(fd, DRM_IOCTL_SYNCOBJ_DESTROY, &destroy);
-
-   /* If it timed out, then we have the ioctl and it supports the
-    * DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT flag.
-    */
-   return ret == -1 && errno == ETIME;
 }
 
 int