2 * Copyright (C) 2015 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #define LOG_TAG "hwc-nv-importer"
19 #include "drmresources.h"
21 #include "nvimporter.h"
24 #include <xf86drmMode.h>
26 #include <cutils/log.h>
27 #include <hardware/gralloc.h>
31 #ifdef USE_NVIDIA_IMPORTER
33 Importer *Importer::CreateInstance(DrmResources *drm) {
34 NvImporter *importer = new NvImporter(drm);
38 int ret = importer->Init();
40 ALOGE("Failed to initialize the nv importer %d", ret);
48 NvImporter::NvImporter(DrmResources *drm) : drm_(drm) {
51 NvImporter::~NvImporter() {
54 int NvImporter::Init() {
55 int ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
56 (const hw_module_t **)&gralloc_);
58 ALOGE("Failed to open gralloc module %d", ret);
62 if (strcasecmp(gralloc_->common.author, "NVIDIA"))
63 ALOGW("Using non-NVIDIA gralloc module: %s/%s\n", gralloc_->common.name,
64 gralloc_->common.author);
69 int NvImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
70 memset(bo, 0, sizeof(hwc_drm_bo_t));
71 NvBuffer_t *buf = GrallocGetNvBuffer(handle);
77 buf = new NvBuffer_t();
79 ALOGE("Failed to allocate new NvBuffer_t");
84 int ret = gralloc_->perform(gralloc_, GRALLOC_MODULE_PERFORM_DRM_IMPORT,
85 drm_->fd(), handle, &buf->bo);
87 ALOGE("GRALLOC_MODULE_PERFORM_DRM_IMPORT failed %d", ret);
92 ret = drmModeAddFB2(drm_->fd(), buf->bo.width, buf->bo.height, buf->bo.format,
93 buf->bo.gem_handles, buf->bo.pitches, buf->bo.offsets,
96 ALOGE("Failed to add fb %d", ret);
97 ReleaseBufferImpl(&buf->bo);
102 ret = GrallocSetNvBuffer(handle, buf);
104 /* This will happen is persist.tegra.gpu_mapping_cache is 0/off,
105 * or if NV gralloc runs out of "priv slots" (currently 3 per buffer,
106 * only one of which should be used by drm_hwcomposer). */
107 ALOGE("Failed to register free callback for imported buffer %d", ret);
108 ReleaseBufferImpl(&buf->bo);
116 int NvImporter::ReleaseBuffer(hwc_drm_bo_t * /* bo */) {
117 /* Stub this out since we don't want hwc releasing buffers */
122 void NvImporter::ReleaseBufferCallback(void *nv_buffer) {
123 NvBuffer_t *buf = (NvBuffer_t *)nv_buffer;
124 buf->importer->ReleaseBufferImpl(&buf->bo);
128 void NvImporter::ReleaseBufferImpl(hwc_drm_bo_t *bo) {
130 int ret = drmModeRmFB(drm_->fd(), bo->fb_id);
132 ALOGE("Failed to rm fb %d", ret);
135 struct drm_gem_close gem_close;
136 memset(&gem_close, 0, sizeof(gem_close));
137 int num_gem_handles = sizeof(bo->gem_handles) / sizeof(bo->gem_handles[0]);
138 for (int i = 0; i < num_gem_handles; i++) {
139 if (!bo->gem_handles[i])
142 gem_close.handle = bo->gem_handles[i];
143 int ret = drmIoctl(drm_->fd(), DRM_IOCTL_GEM_CLOSE, &gem_close);
145 ALOGE("Failed to close gem handle %d %d", i, ret);
147 bo->gem_handles[i] = 0;
151 NvImporter::NvBuffer_t *NvImporter::GrallocGetNvBuffer(buffer_handle_t handle) {
154 gralloc_->perform(gralloc_, GRALLOC_MODULE_PERFORM_GET_IMPORTER_PRIVATE,
155 handle, ReleaseBufferCallback, &priv);
156 return ret ? NULL : (NvBuffer_t *)priv;
159 int NvImporter::GrallocSetNvBuffer(buffer_handle_t handle, NvBuffer_t *buf) {
160 return gralloc_->perform(gralloc_,
161 GRALLOC_MODULE_PERFORM_SET_IMPORTER_PRIVATE, handle,
162 ReleaseBufferCallback, buf);