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