venus: bring up Android support

1. implement hwvulkan_device_t
2. mask Android extension support

Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10112>

src/virtio/vulkan/meson.build

@@ -75,6 +75,10 @@ if with_platform_x11
   ]
 endif
 
+if with_platform_android
+  libvn_files += files('vn_android.c')
+endif
+
 libvulkan_virtio = shared_library(
   'vulkan_virtio',
   [libvn_files, vn_entrypoints, sha1_h],

src/virtio/vulkan/vn_android.c

@@ -0,0 +1,64 @@
+/*
+ * Copyright 2021 Google LLC
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "vn_common.h"
+
+#include <hardware/hwvulkan.h>
+#include <vulkan/vk_icd.h>
+
+static int
+vn_hal_open(const struct hw_module_t *mod,
+            const char *id,
+            struct hw_device_t **dev);
+
+static void UNUSED
+static_asserts(void)
+{
+   STATIC_ASSERT(HWVULKAN_DISPATCH_MAGIC == ICD_LOADER_MAGIC);
+}
+
+PUBLIC struct hwvulkan_module_t HAL_MODULE_INFO_SYM = {
+   .common = {
+      .tag = HARDWARE_MODULE_TAG,
+      .module_api_version = HWVULKAN_MODULE_API_VERSION_0_1,
+      .hal_api_version = HARDWARE_HAL_API_VERSION,
+      .id = HWVULKAN_HARDWARE_MODULE_ID,
+      .name = "Venus Vulkan HAL",
+      .author = "Google LLC",
+      .methods = &(hw_module_methods_t) {
+         .open = vn_hal_open,
+      },
+   },
+};
+
+static int
+vn_hal_close(UNUSED struct hw_device_t *dev)
+{
+   return 0;
+}
+
+static hwvulkan_device_t vn_hal_dev = {
+  .common = {
+     .tag = HARDWARE_DEVICE_TAG,
+     .version = HWVULKAN_DEVICE_API_VERSION_0_1,
+     .module = &HAL_MODULE_INFO_SYM.common,
+     .close = vn_hal_close,
+  },
+ .EnumerateInstanceExtensionProperties = vn_EnumerateInstanceExtensionProperties,
+ .CreateInstance = vn_CreateInstance,
+ .GetInstanceProcAddr = vn_GetInstanceProcAddr,
+};
+
+static int
+vn_hal_open(const struct hw_module_t *mod,
+            const char *id,
+            struct hw_device_t **dev)
+{
+   assert(mod == &HAL_MODULE_INFO_SYM.common);
+   assert(strcmp(id, HWVULKAN_DEVICE_0) == 0);
+
+   *dev = &vn_hal_dev.common;
+   return 0;
+}

src/virtio/vulkan/vn_device.c

@@ -1525,6 +1525,11 @@ vn_physical_device_init_extensions(struct vn_physical_device *physical_dev)
          }
       }
 
+#ifdef ANDROID
+      if (!vk_android_allowed_device_extensions.extensions[i])
+         continue;
+#endif
+
       /* does not depend on renderer (e.g., WSI) */
       if (supported.extensions[i]) {
          physical_dev->base.base.supported_extensions.extensions[i] = true;