1/* 2* Copyright (c) 2017, The Linux Foundation. All rights reserved. 3* 4* Redistribution and use in source and binary forms, with or without 5* modification, are permitted provided that the following conditions are 6* met: 7* * Redistributions of source code must retain the above copyright 8* notice, this list of conditions and the following disclaimer. 9* * Redistributions in binary form must reproduce the above 10* copyright notice, this list of conditions and the following 11* disclaimer in the documentation and/or other materials provided 12* with the distribution. 13* * Neither the name of The Linux Foundation nor the names of its 14* contributors may be used to endorse or promote products derived 15* from this software without specific prior written permission. 16* 17* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 18* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 20* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 21* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 24* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 25* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 26* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28*/ 29 30#include <errno.h> 31#include <fcntl.h> 32#include <sys/stat.h> 33#include <unistd.h> 34#include <xf86drm.h> 35#include <xf86drmMode.h> 36// Intentionally included after xf86 headers so that they in-turn include libdrm version of drm.h 37// that doesn't use keyword "virtual" for a variable name. Not doing so leads to the kernel version 38// of drm.h being included causing compilation to fail 39#include <drm/msm_drm.h> 40#include <algorithm> 41#include <iterator> 42 43#include "drm_master.h" 44 45#define __CLASS__ "DRMMaster" 46 47using std::mutex; 48using std::lock_guard; 49using std::begin; 50using std::copy; 51using std::end; 52using std::fill; 53 54namespace drm_utils { 55 56DRMLogger *DRMLogger::s_instance = nullptr; 57DRMMaster *DRMMaster::s_instance = nullptr; 58mutex DRMMaster::s_lock; 59 60int DRMMaster::GetInstance(DRMMaster **master) { 61 lock_guard<mutex> obj(s_lock); 62 63 if (!s_instance) { 64 s_instance = new DRMMaster(); 65 if (s_instance->Init() < 0) { 66 delete s_instance; 67 s_instance = nullptr; 68 return -ENODEV; 69 } 70 } 71 72 *master = s_instance; 73 return 0; 74} 75 76void DRMMaster::DestroyInstance() { 77 lock_guard<mutex> obj(s_lock); 78 delete s_instance; 79 s_instance = nullptr; 80} 81 82int DRMMaster::Init() { 83 dev_fd_ = drmOpen("msm_drm", nullptr); 84 if (dev_fd_ < 0) { 85 DRM_LOGE("drmOpen failed with error %d", dev_fd_); 86 return -ENODEV; 87 } 88 89 return 0; 90} 91 92DRMMaster::~DRMMaster() { 93 drmClose(dev_fd_); 94 dev_fd_ = -1; 95} 96 97int DRMMaster::CreateFbId(const DRMBuffer &drm_buffer, uint32_t *fb_id) { 98 uint32_t gem_handle = 0; 99 int ret = drmPrimeFDToHandle(dev_fd_, drm_buffer.fd, &gem_handle); 100 if (ret) { 101 DRM_LOGE("drmPrimeFDToHandle failed with error %d", ret); 102 return ret; 103 } 104 105 struct drm_mode_fb_cmd2 cmd2 {}; 106 cmd2.width = drm_buffer.width; 107 cmd2.height = drm_buffer.height; 108 cmd2.pixel_format = drm_buffer.drm_format; 109 cmd2.flags = DRM_MODE_FB_MODIFIERS; 110 fill(begin(cmd2.handles), begin(cmd2.handles) + drm_buffer.num_planes, gem_handle); 111 copy(begin(drm_buffer.stride), end(drm_buffer.stride), begin(cmd2.pitches)); 112 copy(begin(drm_buffer.offset), end(drm_buffer.offset), begin(cmd2.offsets)); 113 fill(begin(cmd2.modifier), begin(cmd2.modifier) + drm_buffer.num_planes, 114 drm_buffer.drm_format_modifier); 115 116 if ((ret = drmIoctl(dev_fd_, DRM_IOCTL_MODE_ADDFB2, &cmd2))) { 117 DRM_LOGE("DRM_IOCTL_MODE_ADDFB2 failed with error %d", ret); 118 } else { 119 *fb_id = cmd2.fb_id; 120 } 121 122 struct drm_gem_close gem_close = {}; 123 gem_close.handle = gem_handle; 124 int ret1 = drmIoctl(dev_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close); 125 if (ret1) { 126 DRM_LOGE("drmIoctl::DRM_IOCTL_GEM_CLOSE failed with error %d", ret1); 127 return ret1; 128 } 129 130 return ret; 131} 132 133int DRMMaster::RemoveFbId(uint32_t fb_id) { 134 int ret = 0; 135#ifdef DRM_IOCTL_MSM_RMFB2 136 ret = drmIoctl(dev_fd_, DRM_IOCTL_MSM_RMFB2, &fb_id); 137 if (ret) { 138 DRM_LOGE("drmIoctl::DRM_IOCTL_MSM_RMFB2 failed for fb_id %d with error %d", fb_id, errno); 139 } 140#else 141 ret = drmModeRmFB(dev_fd_, fb_id); 142 if (ret) { 143 DRM_LOGE("drmModeRmFB failed for fb_id %d with error %d", fb_id, ret); 144 } 145#endif 146 return ret; 147} 148 149} // namespace drm_utils 150