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/*
* Copyright (C) 2015 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-hisi"
#include "platformhisi.h"
#include "drmdevice.h"
#include "platform.h"
#include <drm/drm_fourcc.h>
#include <stdatomic.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <cinttypes>
#include <hardware/gralloc.h>
#include <log/log.h>
#include "gralloc_priv.h"
#define MALI_ALIGN(value, base) (((value) + ((base)-1)) & ~((base)-1))
namespace android {
Importer *Importer::CreateInstance(DrmDevice *drm) {
HisiImporter *importer = new HisiImporter(drm);
if (!importer)
return NULL;
int ret = importer->Init();
if (ret) {
ALOGE("Failed to initialize the hisi importer %d", ret);
delete importer;
return NULL;
}
return importer;
}
HisiImporter::HisiImporter(DrmDevice *drm)
: DrmGenericImporter(drm), drm_(drm) {
}
HisiImporter::~HisiImporter() {
}
int HisiImporter::Init() {
int ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
(const hw_module_t **)&gralloc_);
if (ret) {
ALOGE("Failed to open gralloc module %d", ret);
return ret;
}
if (strcasecmp(gralloc_->common.author, "ARM Ltd."))
ALOGW("Using non-ARM gralloc module: %s/%s\n", gralloc_->common.name,
gralloc_->common.author);
return 0;
}
int HisiImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
memset(bo, 0, sizeof(hwc_drm_bo_t));
private_handle_t const *hnd = reinterpret_cast<private_handle_t const *>(
handle);
if (!hnd)
return -EINVAL;
// We can't import these types of buffers, so pretend we did and rely on the
// planner to skip them when choosing layers for planes
if (!(hnd->usage & GRALLOC_USAGE_HW_FB))
return 0;
uint32_t gem_handle;
int ret = drmPrimeFDToHandle(drm_->fd(), hnd->share_fd, &gem_handle);
if (ret) {
ALOGE("failed to import prime fd %d ret=%d", hnd->share_fd, ret);
return ret;
}
int32_t fmt = ConvertHalFormatToDrm(hnd->req_format);
if (fmt < 0)
return fmt;
bo->width = hnd->width;
bo->height = hnd->height;
bo->hal_format = hnd->req_format;
bo->format = fmt;
bo->usage = hnd->usage;
bo->pixel_stride = hnd->stride;
bo->pitches[0] = hnd->byte_stride;
bo->gem_handles[0] = gem_handle;
bo->offsets[0] = 0;
switch (fmt) {
case DRM_FORMAT_YVU420: {
int align = 128;
if (hnd->usage &
(GRALLOC_USAGE_SW_READ_MASK | GRALLOC_USAGE_SW_WRITE_MASK))
align = 16;
int adjusted_height = MALI_ALIGN(hnd->height, 2);
int y_size = adjusted_height * hnd->byte_stride;
int vu_stride = MALI_ALIGN(hnd->byte_stride / 2, align);
int v_size = vu_stride * (adjusted_height / 2);
/* V plane*/
bo->gem_handles[1] = gem_handle;
bo->pitches[1] = vu_stride;
bo->offsets[1] = y_size;
/* U plane */
bo->gem_handles[2] = gem_handle;
bo->pitches[2] = vu_stride;
bo->offsets[2] = y_size + v_size;
break;
}
default:
break;
}
ret = drmModeAddFB2(drm_->fd(), bo->width, bo->height, bo->format,
bo->gem_handles, bo->pitches, bo->offsets, &bo->fb_id, 0);
if (ret) {
ALOGE("could not create drm fb %d", ret);
return ret;
}
return ret;
}
class PlanStageHiSi : public Planner::PlanStage {
public:
int ProvisionPlanes(std::vector<DrmCompositionPlane> *composition,
std::map<size_t, DrmHwcLayer *> &layers, DrmCrtc *crtc,
std::vector<DrmPlane *> *planes) {
int layers_added = 0;
int initial_layers = layers.size();
// Fill up as many planes as we can with buffers that do not have HW_FB
// usage
for (auto i = layers.begin(); i != layers.end(); i = layers.erase(i)) {
if (!(i->second->gralloc_buffer_usage & GRALLOC_USAGE_HW_FB))
continue;
int ret = Emplace(composition, planes, DrmCompositionPlane::Type::kLayer,
crtc, i->first);
layers_added++;
// We don't have any planes left
if (ret == -ENOENT)
break;
else if (ret)
ALOGE("Failed to emplace layer %zu, dropping it", i->first);
}
/*
* If we only have one layer, but we didn't emplace anything, we
* can run into trouble, as we might try to device composite a
* buffer we fake-imported, which can cause things to jamb up.
* So return an error in this case to ensure we force client
* compositing.
*/
if (!layers_added && (initial_layers <= 1))
return -EINVAL;
return 0;
}
};
std::unique_ptr<Planner> Planner::CreateInstance(DrmDevice *) {
std::unique_ptr<Planner> planner(new Planner);
planner->AddStage<PlanStageHiSi>();
return planner;
}
} // namespace android
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