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, int width, int height,
10 int format, int usage)
14 struct combination *combo;
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 combo = drv_get_combination(drv, drv_format, drv_usage);
23 if (!combo && (usage & GRALLOC_USAGE_HW_COMPOSER)) {
24 drv_usage &= ~BO_USE_SCANOUT;
25 combo = drv_get_combination(drv, drv_format, drv_usage);
29 cros_gralloc_error("Unsupported combination -- HAL format: %u, HAL flags: %u, "
30 "drv_format: %4.4s, drv_flags: %llu",
31 format, usage, reinterpret_cast<char *>(&drv_format), drv_usage);
35 bo = new cros_gralloc_bo();
36 memset(bo, 0, sizeof(*bo));
38 bo->bo = drv_bo_create(drv, width, height, drv_format, drv_usage);
41 cros_gralloc_error("Failed to create bo.");
46 * If there is a desire for more than one kernel buffer, this can be
47 * removed once the ArcCodec and Wayland service have the ability to
48 * send more than one fd. GL/Vulkan drivers may also have to modified.
50 if (drv_num_buffers_per_bo(bo->bo) != 1) {
51 drv_bo_destroy(bo->bo);
53 cros_gralloc_error("Can only support one buffer per bo.");
62 static struct cros_gralloc_handle *cros_gralloc_handle_from_bo(struct bo *bo)
66 struct cros_gralloc_handle *hnd;
68 hnd = new cros_gralloc_handle();
69 memset(hnd, 0, sizeof(*hnd));
71 num_planes = drv_bo_get_num_planes(bo);
73 hnd->base.version = sizeof(hnd->base);
74 hnd->base.numFds = num_planes;
75 hnd->base.numInts = num_ints_handle() - num_planes;
77 for (size_t p = 0; p < num_planes; p++) {
78 hnd->fds[p] = drv_bo_get_plane_fd(bo, p);
79 hnd->strides[p] = drv_bo_get_plane_stride(bo, p);
80 hnd->offsets[p] = drv_bo_get_plane_offset(bo, p);
81 hnd->sizes[p] = drv_bo_get_plane_size(bo, p);
83 mod = drv_bo_get_plane_format_modifier(bo, p);
84 hnd->format_modifiers[p] = static_cast<uint32_t>(mod >> 32);
85 hnd->format_modifiers[p + 1] = static_cast<uint32_t>(mod);
88 hnd->width = drv_bo_get_width(bo);
89 hnd->height = drv_bo_get_height(bo);
90 hnd->format = drv_bo_get_format(bo);
91 hnd->pixel_stride = drv_bo_get_stride_in_pixels(bo);
93 hnd->magic = cros_gralloc_magic();
98 static int cros_gralloc_alloc(alloc_device_t *dev, int w, int h, int format, int usage,
99 buffer_handle_t *handle, int *stride)
101 auto mod = (struct cros_gralloc_module *)dev->common.module;
102 std::lock_guard<std::mutex> lock(mod->mutex);
104 auto bo = cros_gralloc_bo_create(mod->drv, w, h, format, usage);
106 return CROS_GRALLOC_ERROR_NO_RESOURCES;
108 auto hnd = cros_gralloc_handle_from_bo(bo->bo);
109 hnd->droid_format = static_cast<int32_t>(format);
110 hnd->usage = static_cast<int32_t>(usage);
112 mod->handles[hnd].registrations = 0;
113 mod->handles[hnd].bo = bo;
116 mod->buffers[drv_bo_get_plane_handle(bo->bo, 0).u32] = bo;
118 *stride = static_cast<int>(hnd->pixel_stride);
119 *handle = &hnd->base;
121 return CROS_GRALLOC_ERROR_NONE;
124 static int cros_gralloc_free(alloc_device_t *dev, buffer_handle_t handle)
126 struct cros_gralloc_bo *bo;
127 auto hnd = (struct cros_gralloc_handle *)handle;
128 auto mod = (struct cros_gralloc_module *)dev->common.module;
129 std::lock_guard<std::mutex> lock(mod->mutex);
131 if (cros_gralloc_validate_handle(hnd)) {
132 cros_gralloc_error("Invalid handle.");
133 return CROS_GRALLOC_ERROR_BAD_HANDLE;
136 if (cros_gralloc_validate_reference(mod, hnd, &bo)) {
137 cros_gralloc_error("Invalid Reference.");
138 return CROS_GRALLOC_ERROR_BAD_HANDLE;
141 if (mod->handles[hnd].registrations > 0) {
142 cros_gralloc_error("Deallocating before unregistering.");
143 return CROS_GRALLOC_ERROR_BAD_HANDLE;
146 return cros_gralloc_decrement_reference_count(mod, bo);
149 static int cros_gralloc_close(struct hw_device_t *dev)
151 auto mod = (struct cros_gralloc_module *)dev->module;
152 auto alloc = (struct alloc_device_t *)dev;
153 std::lock_guard<std::mutex> lock(mod->mutex);
156 drv_destroy(mod->drv);
160 mod->buffers.clear();
161 mod->handles.clear();
165 return CROS_GRALLOC_ERROR_NONE;
168 int cros_gralloc_open(const struct hw_module_t *mod, const char *name, struct hw_device_t **dev)
170 auto module = (struct cros_gralloc_module *)mod;
171 std::lock_guard<std::mutex> lock(module->mutex);
174 return CROS_GRALLOC_ERROR_NONE;
176 if (strcmp(name, GRALLOC_HARDWARE_GPU0)) {
177 cros_gralloc_error("Incorrect device name - %s.", name);
178 return CROS_GRALLOC_ERROR_UNSUPPORTED;
181 if (cros_gralloc_rendernode_open(&module->drv)) {
182 cros_gralloc_error("Failed to open render node.");
183 return CROS_GRALLOC_ERROR_NO_RESOURCES;
186 auto alloc = new alloc_device_t();
187 memset(alloc, 0, sizeof(*alloc));
189 alloc->alloc = cros_gralloc_alloc;
190 alloc->free = cros_gralloc_free;
191 alloc->common.tag = HARDWARE_DEVICE_TAG;
192 alloc->common.version = 0;
193 alloc->common.module = (hw_module_t *)mod;
194 alloc->common.close = cros_gralloc_close;
196 *dev = &alloc->common;
198 return CROS_GRALLOC_ERROR_NONE;