2 * Copyright 2017 The Chromium OS Authors. All rights reserved.
3 * Use of this source code is governed by a BSD-style license that can be
4 * found in the LICENSE file.
7 #include "cros_gralloc_driver.h"
14 cros_gralloc_driver::cros_gralloc_driver() : drv_(nullptr)
18 cros_gralloc_driver::~cros_gralloc_driver()
29 int32_t cros_gralloc_driver::init()
32 * Create a driver from rendernode while filtering out
33 * the specified undesired driver.
35 * TODO(gsingh): Enable render nodes on udl/evdi.
39 drmVersionPtr version;
40 char const *str = "%s/renderD%d";
41 const char *undesired[2] = { "vgem", nullptr };
42 uint32_t num_nodes = 63;
43 uint32_t min_node = 128;
44 uint32_t max_node = (min_node + num_nodes);
46 for (uint32_t i = 0; i < ARRAY_SIZE(undesired); i++) {
47 for (uint32_t j = min_node; j < max_node; j++) {
49 if (asprintf(&node, str, DRM_DIR_NAME, j) < 0)
52 fd = open(node, O_RDWR, 0);
58 version = drmGetVersion(fd);
62 if (undesired[i] && !strcmp(version->name, undesired[i])) {
63 drmFreeVersion(version);
67 drmFreeVersion(version);
68 drv_ = drv_create(fd);
77 bool cros_gralloc_driver::is_supported(const struct cros_gralloc_buffer_descriptor *descriptor)
79 struct combination *combo;
80 uint32_t resolved_format;
81 resolved_format = drv_resolve_format(drv_, descriptor->drm_format, descriptor->use_flags);
82 combo = drv_get_combination(drv_, resolved_format, descriptor->use_flags);
83 return (combo != nullptr);
86 int32_t cros_gralloc_driver::allocate(const struct cros_gralloc_buffer_descriptor *descriptor,
87 buffer_handle_t *out_handle)
92 uint32_t resolved_format;
95 struct cros_gralloc_handle *hnd;
97 resolved_format = drv_resolve_format(drv_, descriptor->drm_format, descriptor->use_flags);
98 bo = drv_bo_create(drv_, descriptor->width, descriptor->height, resolved_format,
99 descriptor->use_flags);
101 drv_log("Failed to create bo.\n");
106 * If there is a desire for more than one kernel buffer, this can be
107 * removed once the ArcCodec and Wayland service have the ability to
108 * send more than one fd. GL/Vulkan drivers may also have to modified.
110 if (drv_num_buffers_per_bo(bo) != 1) {
112 drv_log("Can only support one buffer per bo.\n");
116 hnd = new cros_gralloc_handle();
117 num_planes = drv_bo_get_num_planes(bo);
119 hnd->base.version = sizeof(hnd->base);
120 hnd->base.numFds = num_planes;
121 hnd->base.numInts = handle_data_size - num_planes;
123 for (size_t plane = 0; plane < num_planes; plane++) {
124 hnd->fds[plane] = drv_bo_get_plane_fd(bo, plane);
125 hnd->strides[plane] = drv_bo_get_plane_stride(bo, plane);
126 hnd->offsets[plane] = drv_bo_get_plane_offset(bo, plane);
128 mod = drv_bo_get_plane_format_modifier(bo, plane);
129 hnd->format_modifiers[2 * plane] = static_cast<uint32_t>(mod >> 32);
130 hnd->format_modifiers[2 * plane + 1] = static_cast<uint32_t>(mod);
133 hnd->width = drv_bo_get_width(bo);
134 hnd->height = drv_bo_get_height(bo);
135 hnd->format = drv_bo_get_format(bo);
136 hnd->use_flags[0] = static_cast<uint32_t>(descriptor->use_flags >> 32);
137 hnd->use_flags[1] = static_cast<uint32_t>(descriptor->use_flags);
138 hnd->pixel_stride = drv_bo_get_stride_in_pixels(bo);
139 hnd->magic = cros_gralloc_magic;
140 hnd->droid_format = descriptor->droid_format;
141 hnd->usage = descriptor->producer_usage;
143 id = drv_bo_get_plane_handle(bo, 0).u32;
144 auto buffer = new cros_gralloc_buffer(id, bo, hnd);
146 std::lock_guard<std::mutex> lock(mutex_);
147 buffers_.emplace(id, buffer);
148 handles_.emplace(hnd, std::make_pair(buffer, 1));
149 *out_handle = &hnd->base;
153 int32_t cros_gralloc_driver::retain(buffer_handle_t handle)
156 std::lock_guard<std::mutex> lock(mutex_);
158 auto hnd = cros_gralloc_convert_handle(handle);
160 drv_log("Invalid handle.\n");
164 auto buffer = get_buffer(hnd);
166 handles_[hnd].second++;
167 buffer->increase_refcount();
171 if (drmPrimeFDToHandle(drv_get_fd(drv_), hnd->fds[0], &id)) {
172 drv_log("drmPrimeFDToHandle failed.\n");
176 if (buffers_.count(id)) {
177 buffer = buffers_[id];
178 buffer->increase_refcount();
181 struct drv_import_fd_data data;
182 data.format = hnd->format;
183 data.width = hnd->width;
184 data.height = hnd->height;
185 data.use_flags = static_cast<uint64_t>(hnd->use_flags[0]) << 32;
186 data.use_flags |= hnd->use_flags[1];
188 memcpy(data.fds, hnd->fds, sizeof(data.fds));
189 memcpy(data.strides, hnd->strides, sizeof(data.strides));
190 memcpy(data.offsets, hnd->offsets, sizeof(data.offsets));
191 for (uint32_t plane = 0; plane < DRV_MAX_PLANES; plane++) {
192 data.format_modifiers[plane] =
193 static_cast<uint64_t>(hnd->format_modifiers[2 * plane]) << 32;
194 data.format_modifiers[plane] |= hnd->format_modifiers[2 * plane + 1];
197 bo = drv_bo_import(drv_, &data);
201 id = drv_bo_get_plane_handle(bo, 0).u32;
203 buffer = new cros_gralloc_buffer(id, bo, nullptr);
204 buffers_.emplace(id, buffer);
207 handles_.emplace(hnd, std::make_pair(buffer, 1));
211 int32_t cros_gralloc_driver::release(buffer_handle_t handle)
213 std::lock_guard<std::mutex> lock(mutex_);
215 auto hnd = cros_gralloc_convert_handle(handle);
217 drv_log("Invalid handle.\n");
221 auto buffer = get_buffer(hnd);
223 drv_log("Invalid Reference.\n");
227 if (!--handles_[hnd].second)
230 if (buffer->decrease_refcount() == 0) {
231 buffers_.erase(buffer->get_id());
238 int32_t cros_gralloc_driver::lock(buffer_handle_t handle, int32_t acquire_fence,
239 const struct rectangle *rect, uint32_t map_flags,
240 uint8_t *addr[DRV_MAX_PLANES])
242 int32_t ret = cros_gralloc_sync_wait(acquire_fence);
246 std::lock_guard<std::mutex> lock(mutex_);
247 auto hnd = cros_gralloc_convert_handle(handle);
249 drv_log("Invalid handle.\n");
253 auto buffer = get_buffer(hnd);
255 drv_log("Invalid Reference.\n");
259 return buffer->lock(rect, map_flags, addr);
262 int32_t cros_gralloc_driver::unlock(buffer_handle_t handle, int32_t *release_fence)
264 std::lock_guard<std::mutex> lock(mutex_);
266 auto hnd = cros_gralloc_convert_handle(handle);
268 drv_log("Invalid handle.\n");
272 auto buffer = get_buffer(hnd);
274 drv_log("Invalid Reference.\n");
279 * From the ANativeWindow::dequeueBuffer documentation:
281 * "A value of -1 indicates that the caller may access the buffer immediately without
282 * waiting on a fence."
285 return buffer->unlock();
288 int32_t cros_gralloc_driver::get_backing_store(buffer_handle_t handle, uint64_t *out_store)
290 std::lock_guard<std::mutex> lock(mutex_);
292 auto hnd = cros_gralloc_convert_handle(handle);
294 drv_log("Invalid handle.\n");
298 auto buffer = get_buffer(hnd);
300 drv_log("Invalid Reference.\n");
304 *out_store = static_cast<uint64_t>(buffer->get_id());
308 cros_gralloc_buffer *cros_gralloc_driver::get_buffer(cros_gralloc_handle_t hnd)
310 /* Assumes driver mutex is held. */
311 if (handles_.count(hnd))
312 return handles_[hnd].first;