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138 lines
3.9 KiB
138 lines
3.9 KiB
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "hwc-platform-drm-generic"
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#include "DrmGenericImporter.h"
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#include <cutils/properties.h>
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#include <gralloc_handle.h>
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#include <hardware/gralloc.h>
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#include <inttypes.h>
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#include <log/log.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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namespace android {
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DrmGenericImporter::DrmGenericImporter(DrmDevice *drm) : drm_(drm) {
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uint64_t cap_value = 0;
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if (drmGetCap(drm_->fd(), DRM_CAP_ADDFB2_MODIFIERS, &cap_value)) {
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ALOGE("drmGetCap failed. Fallback to no modifier support.");
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cap_value = 0;
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}
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has_modifier_support_ = cap_value;
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}
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DrmGenericImporter::~DrmGenericImporter() {
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}
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int DrmGenericImporter::ImportBuffer(hwc_drm_bo_t *bo) {
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int ret = drmPrimeFDToHandle(drm_->fd(), bo->prime_fds[0],
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&bo->gem_handles[0]);
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if (ret) {
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ALOGE("failed to import prime fd %d ret=%d", bo->prime_fds[0], ret);
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return ret;
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}
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for (int i = 1; i < HWC_DRM_BO_MAX_PLANES; i++) {
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int fd = bo->prime_fds[i];
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if (fd != 0) {
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if (fd != bo->prime_fds[0]) {
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ALOGE("Multiplanar FBs are not supported by this version of composer");
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return -ENOTSUP;
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}
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bo->gem_handles[i] = bo->gem_handles[0];
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}
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}
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if (!has_modifier_support_ && bo->modifiers[0]) {
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ALOGE("No ADDFB2 with modifier support. Can't import modifier %" PRIu64,
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bo->modifiers[0]);
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return -EINVAL;
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}
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if (!bo->with_modifiers)
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ret = drmModeAddFB2(drm_->fd(), bo->width, bo->height, bo->format,
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bo->gem_handles, bo->pitches, bo->offsets, &bo->fb_id,
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0);
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else
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ret = drmModeAddFB2WithModifiers(drm_->fd(), bo->width, bo->height,
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bo->format, bo->gem_handles, bo->pitches,
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bo->offsets, bo->modifiers, &bo->fb_id,
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bo->modifiers[0] ? DRM_MODE_FB_MODIFIERS
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: 0);
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if (ret) {
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ALOGE("could not create drm fb %d", ret);
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return ret;
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}
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ImportHandle(bo->gem_handles[0]);
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return ret;
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}
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int DrmGenericImporter::ReleaseBuffer(hwc_drm_bo_t *bo) {
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if (bo->fb_id)
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if (drmModeRmFB(drm_->fd(), bo->fb_id))
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ALOGE("Failed to rm fb");
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for (int i = 0; i < HWC_DRM_BO_MAX_PLANES; i++) {
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if (!bo->gem_handles[i])
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continue;
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if (ReleaseHandle(bo->gem_handles[i])) {
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ALOGE("Failed to release gem handle %d", bo->gem_handles[i]);
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} else {
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for (int j = i + 1; j < HWC_DRM_BO_MAX_PLANES; j++)
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if (bo->gem_handles[j] == bo->gem_handles[i])
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bo->gem_handles[j] = 0;
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bo->gem_handles[i] = 0;
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}
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}
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return 0;
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}
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int DrmGenericImporter::ImportHandle(uint32_t gem_handle) {
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gem_refcount_[gem_handle]++;
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return 0;
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}
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int DrmGenericImporter::ReleaseHandle(uint32_t gem_handle) {
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if (--gem_refcount_[gem_handle])
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return 0;
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gem_refcount_.erase(gem_handle);
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return CloseHandle(gem_handle);
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}
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int DrmGenericImporter::CloseHandle(uint32_t gem_handle) {
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struct drm_gem_close gem_close;
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memset(&gem_close, 0, sizeof(gem_close));
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gem_close.handle = gem_handle;
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int ret = drmIoctl(drm_->fd(), DRM_IOCTL_GEM_CLOSE, &gem_close);
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if (ret)
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ALOGE("Failed to close gem handle %d %d", gem_handle, ret);
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return ret;
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}
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} // namespace android
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