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_format_supported(drv, drv_format, drv_usage)) {
22 cros_gralloc_error("Unsupported combination -- HAL format: %u, "
23 "HAL flags: %u, drv_format: %u, "
24 "drv_flags: %llu", format, usage,
25 drv_format, drv_usage);
29 bo = new cros_gralloc_bo();
30 memset(bo, 0, sizeof(*bo));
32 bo->bo = drv_bo_create(drv, width, height, drv_format, drv_usage);
35 cros_gralloc_error("Failed to create bo.");
39 if (drv_num_buffers_per_bo(bo->bo) != 1) {
40 drv_bo_destroy(bo->bo);
42 cros_gralloc_error("Can only support one buffer per bo.");
51 static struct cros_gralloc_handle *cros_gralloc_handle_from_bo(struct bo *bo)
53 struct cros_gralloc_handle *hnd;
55 hnd = new cros_gralloc_handle();
56 memset(hnd, 0, sizeof(*hnd));
58 hnd->base.version = sizeof(hnd->base);
60 hnd->base.numInts = num_ints();
62 for (size_t p = 0; p < drv_bo_get_num_planes(bo); p++) {
63 hnd->data.strides[p] = drv_bo_get_plane_stride(bo, p);
64 hnd->data.offsets[p] = drv_bo_get_plane_offset(bo, p);
65 hnd->data.sizes[p] = drv_bo_get_plane_size(bo, p);
68 hnd->data.fds[0] = drv_bo_get_plane_fd(bo, 0);
69 hnd->data.width = drv_bo_get_width(bo);
70 hnd->data.height = drv_bo_get_height(bo);
71 hnd->data.format = drv_bo_get_format(bo);
73 hnd->magic = cros_gralloc_magic();
74 hnd->registrations = 0;
76 hnd->pixel_stride = hnd->data.strides[0];
77 hnd->pixel_stride /= drv_stride_from_format(hnd->data.format, 1, 0);
82 static int cros_gralloc_alloc(alloc_device_t *dev, int w, int h, int format,
83 int usage, buffer_handle_t *handle, int *stride)
85 auto mod = (struct cros_gralloc_module *) dev->common.module;
86 std::lock_guard<std::mutex> lock(mod->mutex);
88 auto bo = cros_gralloc_bo_create(mod->drv, w, h, format, usage);
90 return CROS_GRALLOC_ERROR_NO_RESOURCES;
92 auto hnd = cros_gralloc_handle_from_bo(bo->bo);
93 hnd->format = static_cast<int32_t>(format);
94 hnd->usage = static_cast<int32_t>(usage);
96 hnd->bo = reinterpret_cast<uint64_t>(bo);
99 mod->handles.insert(reinterpret_cast<uint64_t>(&hnd->base));
100 mod->buffers[drv_bo_get_plane_handle(bo->bo, 0).u32] = bo;
102 *stride = static_cast<int>(hnd->pixel_stride);
103 *handle = &hnd->base;
105 return CROS_GRALLOC_ERROR_NONE;
108 static int cros_gralloc_free(alloc_device_t *dev, buffer_handle_t handle)
110 struct cros_gralloc_bo *bo;
111 auto hnd = (struct cros_gralloc_handle *) handle;
112 auto mod = (struct cros_gralloc_module *) dev->common.module;
113 std::lock_guard<std::mutex> lock(mod->mutex);
115 if (cros_gralloc_validate_handle(hnd)) {
116 cros_gralloc_error("Invalid handle.");
117 return CROS_GRALLOC_ERROR_BAD_HANDLE;
120 if (cros_gralloc_validate_reference(mod, hnd, &bo)) {
121 cros_gralloc_error("Invalid Reference.");
122 return CROS_GRALLOC_ERROR_BAD_HANDLE;
125 if (hnd->registrations > 0) {
126 cros_gralloc_error("Deallocating before unregistering.");
127 return CROS_GRALLOC_ERROR_BAD_HANDLE;
130 return cros_gralloc_decrement_reference_count(mod, bo);
133 static int cros_gralloc_close(struct hw_device_t *dev)
135 auto mod = (struct cros_gralloc_module *) dev->module;
136 auto alloc = (struct alloc_device_t *) dev;
137 std::lock_guard<std::mutex> lock(mod->mutex);
140 drv_destroy(mod->drv);
144 mod->buffers.clear();
145 mod->handles.clear();
149 return CROS_GRALLOC_ERROR_NONE;
152 int cros_gralloc_open(const struct hw_module_t *mod, const char *name,
153 struct hw_device_t **dev)
155 auto module = (struct cros_gralloc_module *) mod;
156 std::lock_guard<std::mutex> lock(module->mutex);
159 return CROS_GRALLOC_ERROR_NONE;
161 if (strcmp(name, GRALLOC_HARDWARE_GPU0)) {
162 cros_gralloc_error("Incorrect device name - %s.", name);
163 return CROS_GRALLOC_ERROR_UNSUPPORTED;
166 if (cros_gralloc_rendernode_open(&module->drv)) {
167 cros_gralloc_error("Failed to open render node.");
168 return CROS_GRALLOC_ERROR_NO_RESOURCES;
171 auto alloc = new alloc_device_t();
172 memset(alloc, 0, sizeof(*alloc));
174 alloc->alloc = cros_gralloc_alloc;
175 alloc->free = cros_gralloc_free;
176 alloc->common.tag = HARDWARE_DEVICE_TAG;
177 alloc->common.version = 0;
178 alloc->common.module = (hw_module_t*) mod;
179 alloc->common.close = cros_gralloc_close;
181 *dev = &alloc->common;
183 return CROS_GRALLOC_ERROR_NONE;