2 * Copyright (C) 2015 The Android Open Source Project
3 * Copyright (C) 2015 NVIDIA Corporation.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <cutils/log.h>
19 #include <hardware/gralloc.h>
23 #include <xf86drmMode.h>
24 #include "drm_hwcomposer.h"
26 #define ARRAY_SIZE(arr) (int)(sizeof(arr) / sizeof((arr)[0]))
28 struct hwc_import_context {
29 const gralloc_module_t *gralloc_module;
32 int hwc_import_init(struct hwc_import_context **ctx) {
33 struct hwc_import_context *import_ctx = (struct hwc_import_context *)calloc(1, sizeof(*import_ctx));
35 ALOGE("Failed to allocate gralloc import context");
39 int ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
40 (const hw_module_t **)&import_ctx->gralloc_module);
42 ALOGE("Failed to open gralloc module");
47 if (!strcasecmp(import_ctx->gralloc_module->common.author, "NVIDIA"))
48 ALOGW("Using non-NVIDIA gralloc module: %s\n",
49 import_ctx->gralloc_module->common.name);
56 int hwc_import_destroy(struct hwc_import_context *ctx) {
61 struct importer_priv {
66 static void free_priv(void *p) {
67 struct importer_priv *priv = (struct importer_priv *)p;
69 int ret = drmModeRmFB(priv->drm_fd, priv->bo.fb_id);
71 ALOGE("Failed to rm fb %d", ret);
74 struct drm_gem_close gem_close;
75 memset(&gem_close, 0, sizeof(gem_close));
76 for (int i = 0; i < ARRAY_SIZE(priv->bo.gem_handles); i++) {
77 if (!priv->bo.gem_handles[i])
79 gem_close.handle = priv->bo.gem_handles[i];
80 int ret = drmIoctl(priv->drm_fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
82 ALOGE("Failed to close gem handle %d", ret);
88 static int hwc_import_set_priv(hwc_import_context *ctx, buffer_handle_t handle,
89 struct importer_priv *priv) {
90 const gralloc_module_t *g = ctx->gralloc_module;
91 return g->perform(g, GRALLOC_MODULE_PERFORM_SET_IMPORTER_PRIVATE, handle,
95 static struct importer_priv *hwc_import_get_priv(hwc_import_context *ctx,
96 buffer_handle_t handle) {
97 const gralloc_module_t *g = ctx->gralloc_module;
99 int ret = g->perform(g, GRALLOC_MODULE_PERFORM_GET_IMPORTER_PRIVATE, handle,
101 return ret ? NULL : (struct importer_priv *)priv;
104 int hwc_import_bo_create(int fd, hwc_import_context *ctx,
105 buffer_handle_t handle, struct hwc_drm_bo *bo) {
106 /* Get imported bo that is cached in gralloc buffer, or create a new one. */
107 struct importer_priv *priv = hwc_import_get_priv(ctx, handle);
113 priv = (struct importer_priv *)calloc(1, sizeof(*priv));
118 const gralloc_module_t *g = ctx->gralloc_module;
120 g->perform(g, GRALLOC_MODULE_PERFORM_DRM_IMPORT, fd, handle, &priv->bo);
122 ALOGE("GRALLOC_MODULE_PERFORM_DRM_IMPORT failed %d", ret);
127 ret = drmModeAddFB2(fd, priv->bo.width, priv->bo.height, priv->bo.format,
128 priv->bo.gem_handles, priv->bo.pitches,
129 priv->bo.offsets, &priv->bo.fb_id, 0);
131 ALOGE("Failed to add fb %d", ret);
136 ret = hwc_import_set_priv(ctx, handle, priv);
138 /* This will happen is persist.tegra.gpu_mapping_cache is 0/off,
139 * or if NV gralloc runs out of "priv slots" (currently 3 per buffer,
140 * only one of which should be used by drm_hwcomposer). */
141 ALOGE("Failed to register free callback for imported buffer %d", ret);
149 bool hwc_import_bo_release(int fd, hwc_import_context *ctx,
150 struct hwc_drm_bo *bo) {
151 /* hwc may not close the gem handles, we own them */