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156 lines
4.6 KiB
156 lines
4.6 KiB
/*
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* Copyright (c) 2017 - 2018, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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// Intentionally included after xf86 headers so that they in-turn include libdrm version of drm.h
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// that doesn't use keyword "virtual" for a variable name. Not doing so leads to the kernel version
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// of drm.h being included causing compilation to fail
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#include <drm/msm_drm.h>
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#include <algorithm>
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#include <iterator>
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#include "drm_master.h"
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#define __CLASS__ "DRMMaster"
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using std::mutex;
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using std::lock_guard;
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using std::begin;
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using std::copy;
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using std::end;
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using std::fill;
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namespace drm_utils {
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DRMMaster *DRMMaster::s_instance = nullptr;
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mutex DRMMaster::s_lock;
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int DRMMaster::GetInstance(DRMMaster **master) {
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lock_guard<mutex> obj(s_lock);
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if (!s_instance) {
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s_instance = new DRMMaster();
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if (s_instance->Init() < 0) {
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delete s_instance;
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s_instance = nullptr;
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return -ENODEV;
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}
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}
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*master = s_instance;
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return 0;
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}
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void DRMMaster::DestroyInstance() {
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lock_guard<mutex> obj(s_lock);
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delete s_instance;
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s_instance = nullptr;
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}
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int DRMMaster::Init() {
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dev_fd_ = drmOpen("msm_drm", nullptr);
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if (dev_fd_ < 0) {
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DRM_LOGE("drmOpen failed with error %d", dev_fd_);
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return -ENODEV;
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}
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return 0;
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}
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DRMMaster::~DRMMaster() {
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drmClose(dev_fd_);
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dev_fd_ = -1;
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}
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int DRMMaster::CreateFbId(const DRMBuffer &drm_buffer, uint32_t *fb_id) {
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uint32_t gem_handle = 0;
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int ret = drmPrimeFDToHandle(dev_fd_, drm_buffer.fd, &gem_handle);
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if (ret) {
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DRM_LOGE("drmPrimeFDToHandle failed with error %d", ret);
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return ret;
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}
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struct drm_mode_fb_cmd2 cmd2 {};
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cmd2.width = drm_buffer.width;
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cmd2.height = drm_buffer.height;
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cmd2.pixel_format = drm_buffer.drm_format;
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cmd2.flags = DRM_MODE_FB_MODIFIERS;
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fill(begin(cmd2.handles), begin(cmd2.handles) + drm_buffer.num_planes, gem_handle);
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copy(begin(drm_buffer.stride), end(drm_buffer.stride), begin(cmd2.pitches));
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copy(begin(drm_buffer.offset), end(drm_buffer.offset), begin(cmd2.offsets));
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fill(begin(cmd2.modifier), begin(cmd2.modifier) + drm_buffer.num_planes,
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drm_buffer.drm_format_modifier);
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if ((ret = drmIoctl(dev_fd_, DRM_IOCTL_MODE_ADDFB2, &cmd2))) {
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DRM_LOGE("DRM_IOCTL_MODE_ADDFB2 failed with error %d", ret);
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} else {
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*fb_id = cmd2.fb_id;
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}
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struct drm_gem_close gem_close = {};
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gem_close.handle = gem_handle;
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int ret1 = drmIoctl(dev_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close);
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if (ret1) {
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DRM_LOGE("drmIoctl::DRM_IOCTL_GEM_CLOSE failed with error %d", ret1);
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return ret1;
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}
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return ret;
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}
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int DRMMaster::RemoveFbId(uint32_t fb_id) {
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int ret = 0;
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#ifdef DRM_IOCTL_MSM_RMFB2
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ret = drmIoctl(dev_fd_, DRM_IOCTL_MSM_RMFB2, &fb_id);
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if (ret) {
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DRM_LOGE("drmIoctl::DRM_IOCTL_MSM_RMFB2 failed for fb_id %d with error %d", fb_id, errno);
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}
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#else
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ret = drmModeRmFB(dev_fd_, fb_id);
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if (ret) {
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DRM_LOGE("drmModeRmFB failed for fb_id %d with error %d", fb_id, ret);
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}
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#endif
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return ret;
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}
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bool DRMMaster::IsRmFbRefCounted() {
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#ifdef DRM_IOCTL_MSM_RMFB2
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return true;
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#endif
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return false;
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}
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} // namespace drm_utils
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