anv: Implement gem_create for Xe backend

Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21698>

src/intel/vulkan/anv_kmd_backend.c

@@ -31,6 +31,8 @@ anv_kmd_backend_get(enum intel_kmd_type type)
    switch (type) {
    case INTEL_KMD_TYPE_I915:
       return anv_i915_kmd_backend_get();
+   case INTEL_KMD_TYPE_XE:
+      return anv_xe_kmd_backend_get();
    case INTEL_KMD_TYPE_STUB:
       return anv_stub_kmd_backend_get();
    default:

src/intel/vulkan/anv_kmd_backend.h

@@ -70,4 +70,5 @@ const struct anv_kmd_backend *anv_kmd_backend_get(enum intel_kmd_type type);
 
 /* Internal functions, should only be called by anv_kmd_backend_get() */
 const struct anv_kmd_backend *anv_i915_kmd_backend_get(void);
+const struct anv_kmd_backend *anv_xe_kmd_backend_get(void);
 const struct anv_kmd_backend *anv_stub_kmd_backend_get(void);

src/intel/vulkan/meson.build

@@ -137,6 +137,7 @@ libanv_files = files(
   'i915/anv_kmd_backend.c',
   'layers/anv_doom64.c',
   'layers/anv_hitman3.c',
+  'xe/anv_kmd_backend.c',
   'anv_allocator.c',
   'anv_android.h',
   'anv_batch_chain.c',

src/intel/vulkan/xe/anv_kmd_backend.c

@@ -0,0 +1,54 @@
+/*
+ * Copyright © 2023 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 (including the next
+ * paragraph) 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 "anv_private.h"
+
+#include "drm-uapi/xe_drm.h"
+
+static uint32_t
+xe_gem_create(struct anv_device *device,
+              const struct intel_memory_class_instance **regions,
+              uint16_t regions_count, uint64_t size,
+              enum anv_bo_alloc_flags alloc_flags)
+{
+   struct drm_xe_gem_create gem_create = {
+     .vm_id = 0,/* TODO: create VM */
+     .size = size,
+   };
+   for (uint16_t i = 0; i < regions_count; i++)
+      gem_create.flags |= BITFIELD_BIT(regions[i]->instance);
+
+   if (intel_ioctl(device->fd, DRM_IOCTL_XE_GEM_CREATE, &gem_create))
+      return 0;
+
+   return gem_create.handle;
+}
+
+const struct anv_kmd_backend *
+anv_xe_kmd_backend_get(void)
+{
+   static const struct anv_kmd_backend xe_backend = {
+      .gem_create = xe_gem_create,
+   };
+   return &xe_backend;
+}