2 * Copyright 2016 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.h"
9 static struct cros_gralloc_bo *cros_gralloc_bo_create(struct driver *drv,
10 int width, int height,
11 int format, int usage)
15 struct cros_gralloc_bo *bo;
17 drv_format = cros_gralloc_convert_format(format);
18 drv_format = drv_resolve_format(drv, drv_format);
19 drv_usage = cros_gralloc_convert_flags(usage);
21 if (!drv_is_combination_supported(drv, drv_format, drv_usage,
22 DRM_FORMAT_MOD_NONE)) {
23 cros_gralloc_error("Unsupported combination -- HAL format: %u, "
24 "HAL flags: %u, drv_format: %u, "
25 "drv_flags: %llu", format, usage,
26 drv_format, drv_usage);
30 bo = new cros_gralloc_bo();
31 memset(bo, 0, sizeof(*bo));
33 bo->bo = drv_bo_create(drv, width, height, drv_format, drv_usage);
36 cros_gralloc_error("Failed to create bo.");
41 * If there is a desire for more than one kernel buffer, this can be
42 * removed once the ArcCodec and Wayland service have the ability to
43 * send more than one fd. GL/Vulkan drivers may also have to modified.
45 if (drv_num_buffers_per_bo(bo->bo) != 1) {
46 drv_bo_destroy(bo->bo);
48 cros_gralloc_error("Can only support one buffer per bo.");
57 static struct cros_gralloc_handle *cros_gralloc_handle_from_bo(struct bo *bo)
61 struct cros_gralloc_handle *hnd;
63 hnd = new cros_gralloc_handle();
64 memset(hnd, 0, sizeof(*hnd));
66 num_planes = drv_bo_get_num_planes(bo);
68 hnd->base.version = sizeof(hnd->base);
69 hnd->base.numFds = num_planes;
70 hnd->base.numInts = num_ints_handle() - num_planes;
72 for (size_t p = 0; p < num_planes; p++) {
73 hnd->fds[p] = drv_bo_get_plane_fd(bo, p);
74 hnd->strides[p] = drv_bo_get_plane_stride(bo, p);
75 hnd->offsets[p] = drv_bo_get_plane_offset(bo, p);
76 hnd->sizes[p] = drv_bo_get_plane_size(bo, p);
78 mod = drv_bo_get_plane_format_modifier(bo, p);
79 hnd->format_modifiers[p] = static_cast<uint32_t>(mod >> 32);
80 hnd->format_modifiers[p+1] = static_cast<uint32_t>(mod);
83 hnd->width = drv_bo_get_width(bo);
84 hnd->height = drv_bo_get_height(bo);
85 hnd->format = drv_bo_get_format(bo);
87 hnd->magic = cros_gralloc_magic();
88 hnd->registrations = 0;
90 hnd->pixel_stride = hnd->strides[0];
91 hnd->pixel_stride /= drv_stride_from_format(hnd->format, 1, 0);
96 static int cros_gralloc_alloc(alloc_device_t *dev, int w, int h, int format,
97 int usage, buffer_handle_t *handle, int *stride)
99 auto mod = (struct cros_gralloc_module *) dev->common.module;
100 std::lock_guard<std::mutex> lock(mod->mutex);
102 auto bo = cros_gralloc_bo_create(mod->drv, w, h, format, usage);
104 return CROS_GRALLOC_ERROR_NO_RESOURCES;
106 auto hnd = cros_gralloc_handle_from_bo(bo->bo);
107 hnd->droid_format = static_cast<int32_t>(format);
108 hnd->usage = static_cast<int32_t>(usage);
110 hnd->bo = reinterpret_cast<uint64_t>(bo);
113 mod->handles.insert(reinterpret_cast<uint64_t>(&hnd->base));
114 mod->buffers[drv_bo_get_plane_handle(bo->bo, 0).u32] = bo;
116 *stride = static_cast<int>(hnd->pixel_stride);
117 *handle = &hnd->base;
119 return CROS_GRALLOC_ERROR_NONE;
122 static int cros_gralloc_free(alloc_device_t *dev, buffer_handle_t handle)
124 struct cros_gralloc_bo *bo;
125 auto hnd = (struct cros_gralloc_handle *) handle;
126 auto mod = (struct cros_gralloc_module *) dev->common.module;
127 std::lock_guard<std::mutex> lock(mod->mutex);
129 if (cros_gralloc_validate_handle(hnd)) {
130 cros_gralloc_error("Invalid handle.");
131 return CROS_GRALLOC_ERROR_BAD_HANDLE;
134 if (cros_gralloc_validate_reference(mod, hnd, &bo)) {
135 cros_gralloc_error("Invalid Reference.");
136 return CROS_GRALLOC_ERROR_BAD_HANDLE;
139 if (hnd->registrations > 0) {
140 cros_gralloc_error("Deallocating before unregistering.");
141 return CROS_GRALLOC_ERROR_BAD_HANDLE;
144 return cros_gralloc_decrement_reference_count(mod, bo);
147 static int cros_gralloc_close(struct hw_device_t *dev)
149 auto mod = (struct cros_gralloc_module *) dev->module;
150 auto alloc = (struct alloc_device_t *) dev;
151 std::lock_guard<std::mutex> lock(mod->mutex);
154 drv_destroy(mod->drv);
158 mod->buffers.clear();
159 mod->handles.clear();
163 return CROS_GRALLOC_ERROR_NONE;
166 int cros_gralloc_open(const struct hw_module_t *mod, const char *name,
167 struct hw_device_t **dev)
169 auto module = (struct cros_gralloc_module *) mod;
170 std::lock_guard<std::mutex> lock(module->mutex);
173 return CROS_GRALLOC_ERROR_NONE;
175 if (strcmp(name, GRALLOC_HARDWARE_GPU0)) {
176 cros_gralloc_error("Incorrect device name - %s.", name);
177 return CROS_GRALLOC_ERROR_UNSUPPORTED;
180 if (cros_gralloc_rendernode_open(&module->drv)) {
181 cros_gralloc_error("Failed to open render node.");
182 return CROS_GRALLOC_ERROR_NO_RESOURCES;
185 auto alloc = new alloc_device_t();
186 memset(alloc, 0, sizeof(*alloc));
188 alloc->alloc = cros_gralloc_alloc;
189 alloc->free = cros_gralloc_free;
190 alloc->common.tag = HARDWARE_DEVICE_TAG;
191 alloc->common.version = 0;
192 alloc->common.module = (hw_module_t*) mod;
193 alloc->common.close = cros_gralloc_close;
195 *dev = &alloc->common;
197 return CROS_GRALLOC_ERROR_NONE;