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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 (at) 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 "common_drm.h"
     38 
     39 #include <GL/gl.h> /* dri_interface needs GL types */
     40 #include "GL/internal/dri_interface.h"
     41 
     42 struct gbm_dri_surface;
     43 struct gbm_dri_bo;
     44 
     45 struct gbm_dri_device {
     46    struct gbm_drm_device base;
     47 
     48    void *driver;
     49 
     50    __DRIscreen *screen;
     51    __DRIcontext *context;
     52    mtx_t mutex;
     53 
     54    const __DRIcoreExtension   *core;
     55    const __DRIdri2Extension   *dri2;
     56    const __DRI2fenceExtension *fence;
     57    const __DRIimageExtension  *image;
     58    const __DRIswrastExtension *swrast;
     59    const __DRI2flushExtension *flush;
     60    const __DRIdri2LoaderExtension *loader;
     61    const __DRI2interopExtension *interop;
     62 
     63    const __DRIconfig   **driver_configs;
     64    const __DRIextension **loader_extensions;
     65    const __DRIextension **driver_extensions;
     66 
     67    __DRIimage *(*lookup_image)(__DRIscreen *screen, void *image, void *data);
     68    void *lookup_user_data;
     69 
     70    __DRIbuffer *(*get_buffers)(__DRIdrawable * driDrawable,
     71                                int *width, int *height,
     72                                unsigned int *attachments, int count,
     73                                int *out_count, void *data);
     74    void (*flush_front_buffer)(__DRIdrawable * driDrawable, void *data);
     75    __DRIbuffer *(*get_buffers_with_format)(__DRIdrawable * driDrawable,
     76 			     int *width, int *height,
     77 			     unsigned int *attachments, int count,
     78 			     int *out_count, void *data);
     79    int (*image_get_buffers)(__DRIdrawable *driDrawable,
     80                             unsigned int format,
     81                             uint32_t *stamp,
     82                             void *loaderPrivate,
     83                             uint32_t buffer_mask,
     84                             struct __DRIimageList *buffers);
     85    void (*swrast_put_image2)(__DRIdrawable *driDrawable,
     86                              int            op,
     87                              int            x,
     88                              int            y,
     89                              int            width,
     90                              int            height,
     91                              int            stride,
     92                              char          *data,
     93                              void          *loaderPrivate);
     94    void (*swrast_get_image)(__DRIdrawable *driDrawable,
     95                             int            x,
     96                             int            y,
     97                             int            width,
     98                             int            height,
     99                             char          *data,
    100                             void          *loaderPrivate);
    101 
    102    struct wl_drm *wl_drm;
    103 };
    104 
    105 struct gbm_dri_bo {
    106    struct gbm_drm_bo base;
    107 
    108    __DRIimage *image;
    109 
    110    /* Used for cursors and the swrast front BO */
    111    uint32_t handle, size;
    112    void *map;
    113 };
    114 
    115 struct gbm_dri_surface {
    116    struct gbm_surface base;
    117 
    118    void *dri_private;
    119 };
    120 
    121 static inline struct gbm_dri_device *
    122 gbm_dri_device(struct gbm_device *gbm)
    123 {
    124    return (struct gbm_dri_device *) gbm;
    125 }
    126 
    127 static inline struct gbm_dri_bo *
    128 gbm_dri_bo(struct gbm_bo *bo)
    129 {
    130    return (struct gbm_dri_bo *) bo;
    131 }
    132 
    133 static inline struct gbm_dri_surface *
    134 gbm_dri_surface(struct gbm_surface *surface)
    135 {
    136    return (struct gbm_dri_surface *) surface;
    137 }
    138 
    139 static inline void *
    140 gbm_dri_bo_map_dumb(struct gbm_dri_bo *bo)
    141 {
    142    struct drm_mode_map_dumb map_arg;
    143    int ret;
    144 
    145    if (bo->image != NULL)
    146       return NULL;
    147 
    148    if (bo->map != NULL)
    149       return bo->map;
    150 
    151    memset(&map_arg, 0, sizeof(map_arg));
    152    map_arg.handle = bo->handle;
    153 
    154    ret = drmIoctl(bo->base.base.gbm->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_arg);
    155    if (ret)
    156       return NULL;
    157 
    158    bo->map = mmap(0, bo->size, PROT_WRITE,
    159                   MAP_SHARED, bo->base.base.gbm->fd, map_arg.offset);
    160    if (bo->map == MAP_FAILED) {
    161       bo->map = NULL;
    162       return NULL;
    163    }
    164 
    165    return bo->map;
    166 }
    167 
    168 static inline void
    169 gbm_dri_bo_unmap_dumb(struct gbm_dri_bo *bo)
    170 {
    171    munmap(bo->map, bo->size);
    172    bo->map = NULL;
    173 }
    174 
    175 #endif
    176