1/*
2 * Copyright © 2017 Red Hat.
3 * Copyright © 2017 Valve Corporation.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25
26#include "main/mtypes.h"
27
28#include "main/externalobjects.h"
29
30#include "st_context.h"
31#include "st_cb_memoryobjects.h"
32#include "st_util.h"
33
34#include "frontend/drm_driver.h"
35#include "pipe/p_context.h"
36#include "pipe/p_screen.h"
37
38#ifdef HAVE_LIBDRM
39#include "drm-uapi/drm_fourcc.h"
40#endif
41
42static struct gl_memory_object *
43st_memoryobj_alloc(struct gl_context *ctx, GLuint name)
44{
45   struct st_memory_object *st_obj = ST_CALLOC_STRUCT(st_memory_object);
46   if (!st_obj)
47      return NULL;
48
49   _mesa_initialize_memory_object(ctx, &st_obj->Base, name);
50   return &st_obj->Base;
51}
52
53static void
54st_memoryobj_free(struct gl_context *ctx,
55                  struct gl_memory_object *obj)
56{
57   struct st_memory_object *st_obj = st_memory_object(obj);
58   struct st_context *st = st_context(ctx);
59   struct pipe_screen *screen = st->screen;
60
61   if (st_obj->memory)
62      screen->memobj_destroy(screen, st_obj->memory);
63   _mesa_delete_memory_object(ctx, obj);
64}
65
66
67static void
68st_import_memoryobj_fd(struct gl_context *ctx,
69                       struct gl_memory_object *obj,
70                       GLuint64 size,
71                       int fd)
72{
73   struct st_memory_object *st_obj = st_memory_object(obj);
74   struct st_context *st = st_context(ctx);
75   struct pipe_screen *screen = st->screen;
76   struct winsys_handle whandle = {
77      .type = WINSYS_HANDLE_TYPE_FD,
78      .handle = fd,
79#ifdef HAVE_LIBDRM
80      .modifier = DRM_FORMAT_MOD_INVALID,
81#endif
82   };
83
84   st_obj->memory = screen->memobj_create_from_handle(screen,
85                                                      &whandle,
86                                                      obj->Dedicated);
87
88#if !defined(_WIN32)
89   /* We own fd, but we no longer need it. So get rid of it */
90   close(fd);
91#endif
92}
93
94void
95st_init_memoryobject_functions(struct dd_function_table *functions)
96{
97   functions->NewMemoryObject = st_memoryobj_alloc;
98   functions->DeleteMemoryObject = st_memoryobj_free;
99   functions->ImportMemoryObjectFd = st_import_memoryobj_fd;
100}
101