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1 /*
2  * Copyright © 2011 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18  * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22  * DEALINGS IN THE SOFTWARE.
23  *
24  * Authors:
25  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
26  */
27 
28 #ifndef _GBM_DRI_INTERNAL_H_
29 #define _GBM_DRI_INTERNAL_H_
30 
31 #include <xf86drm.h>
32 #include <string.h>
33 #include <sys/mman.h>
34 #include "gbmint.h"
35 #include "c11/threads.h"
36 
37 #include <GL/gl.h> /* dri_interface needs GL types */
38 #include "GL/internal/dri_interface.h"
39 
40 struct gbm_dri_surface;
41 struct gbm_dri_bo;
42 
43 struct gbm_dri_visual {
44    uint32_t gbm_format;
45    int dri_image_format;
46    struct {
47       int red;
48       int green;
49       int blue;
50       int alpha;
51    } rgba_shifts;
52    struct {
53       unsigned int red;
54       unsigned int green;
55       unsigned int blue;
56       unsigned int alpha;
57    } rgba_sizes;
58    bool is_float;
59 };
60 
61 struct gbm_dri_device {
62    struct gbm_device base;
63 
64    void *driver;
65    char *driver_name; /* Name of the DRI module, without the _dri suffix */
66 
67    __DRIscreen *screen;
68    __DRIcontext *context;
69    mtx_t mutex;
70 
71    const __DRIcoreExtension   *core;
72    const __DRIdri2Extension   *dri2;
73    const __DRI2fenceExtension *fence;
74    const __DRIimageExtension  *image;
75    const __DRIswrastExtension *swrast;
76    const __DRI2flushExtension *flush;
77 
78    const __DRIconfig   **driver_configs;
79    const __DRIextension **loader_extensions;
80    const __DRIextension **driver_extensions;
81 
82    __DRIimage *(*lookup_image)(__DRIscreen *screen, void *image, void *data);
83    void *lookup_user_data;
84 
85    __DRIbuffer *(*get_buffers)(__DRIdrawable * driDrawable,
86                                int *width, int *height,
87                                unsigned int *attachments, int count,
88                                int *out_count, void *data);
89    void (*flush_front_buffer)(__DRIdrawable * driDrawable, void *data);
90    __DRIbuffer *(*get_buffers_with_format)(__DRIdrawable * driDrawable,
91 			     int *width, int *height,
92 			     unsigned int *attachments, int count,
93 			     int *out_count, void *data);
94    int (*image_get_buffers)(__DRIdrawable *driDrawable,
95                             unsigned int format,
96                             uint32_t *stamp,
97                             void *loaderPrivate,
98                             uint32_t buffer_mask,
99                             struct __DRIimageList *buffers);
100    void (*swrast_put_image2)(__DRIdrawable *driDrawable,
101                              int            op,
102                              int            x,
103                              int            y,
104                              int            width,
105                              int            height,
106                              int            stride,
107                              char          *data,
108                              void          *loaderPrivate);
109    void (*swrast_get_image)(__DRIdrawable *driDrawable,
110                             int            x,
111                             int            y,
112                             int            width,
113                             int            height,
114                             char          *data,
115                             void          *loaderPrivate);
116 
117    struct wl_drm *wl_drm;
118 
119    const struct gbm_dri_visual *visual_table;
120    int num_visuals;
121 };
122 
123 struct gbm_dri_bo {
124    struct gbm_bo base;
125 
126    __DRIimage *image;
127 
128    /* Used for cursors and the swrast front BO */
129    uint32_t handle, size;
130    void *map;
131 };
132 
133 struct gbm_dri_surface {
134    struct gbm_surface base;
135 
136    void *dri_private;
137 };
138 
139 static inline struct gbm_dri_device *
gbm_dri_device(struct gbm_device * gbm)140 gbm_dri_device(struct gbm_device *gbm)
141 {
142    return (struct gbm_dri_device *) gbm;
143 }
144 
145 static inline struct gbm_dri_bo *
gbm_dri_bo(struct gbm_bo * bo)146 gbm_dri_bo(struct gbm_bo *bo)
147 {
148    return (struct gbm_dri_bo *) bo;
149 }
150 
151 static inline struct gbm_dri_surface *
gbm_dri_surface(struct gbm_surface * surface)152 gbm_dri_surface(struct gbm_surface *surface)
153 {
154    return (struct gbm_dri_surface *) surface;
155 }
156 
157 static inline void *
gbm_dri_bo_map_dumb(struct gbm_dri_bo * bo)158 gbm_dri_bo_map_dumb(struct gbm_dri_bo *bo)
159 {
160    struct drm_mode_map_dumb map_arg;
161    int ret;
162 
163    if (bo->image != NULL)
164       return NULL;
165 
166    if (bo->map != NULL)
167       return bo->map;
168 
169    memset(&map_arg, 0, sizeof(map_arg));
170    map_arg.handle = bo->handle;
171 
172    ret = drmIoctl(bo->base.gbm->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_arg);
173    if (ret)
174       return NULL;
175 
176    bo->map = mmap(0, bo->size, PROT_WRITE,
177                   MAP_SHARED, bo->base.gbm->fd, map_arg.offset);
178    if (bo->map == MAP_FAILED) {
179       bo->map = NULL;
180       return NULL;
181    }
182 
183    return bo->map;
184 }
185 
186 static inline void
gbm_dri_bo_unmap_dumb(struct gbm_dri_bo * bo)187 gbm_dri_bo_unmap_dumb(struct gbm_dri_bo *bo)
188 {
189    munmap(bo->map, bo->size);
190    bo->map = NULL;
191 }
192 
193 #endif
194