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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 <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_device {
     44    struct gbm_device base;
     45 
     46    void *driver;
     47    char *driver_name; /* Name of the DRI module, without the _dri suffix */
     48 
     49    __DRIscreen *screen;
     50    __DRIcontext *context;
     51    mtx_t mutex;
     52 
     53    const __DRIcoreExtension   *core;
     54    const __DRIdri2Extension   *dri2;
     55    const __DRI2fenceExtension *fence;
     56    const __DRIimageExtension  *image;
     57    const __DRIswrastExtension *swrast;
     58    const __DRI2flushExtension *flush;
     59 
     60    const __DRIconfig   **driver_configs;
     61    const __DRIextension **loader_extensions;
     62    const __DRIextension **driver_extensions;
     63 
     64    __DRIimage *(*lookup_image)(__DRIscreen *screen, void *image, void *data);
     65    void *lookup_user_data;
     66 
     67    __DRIbuffer *(*get_buffers)(__DRIdrawable * driDrawable,
     68                                int *width, int *height,
     69                                unsigned int *attachments, int count,
     70                                int *out_count, void *data);
     71    void (*flush_front_buffer)(__DRIdrawable * driDrawable, void *data);
     72    __DRIbuffer *(*get_buffers_with_format)(__DRIdrawable * driDrawable,
     73 			     int *width, int *height,
     74 			     unsigned int *attachments, int count,
     75 			     int *out_count, void *data);
     76    int (*image_get_buffers)(__DRIdrawable *driDrawable,
     77                             unsigned int format,
     78                             uint32_t *stamp,
     79                             void *loaderPrivate,
     80                             uint32_t buffer_mask,
     81                             struct __DRIimageList *buffers);
     82    void (*swrast_put_image2)(__DRIdrawable *driDrawable,
     83                              int            op,
     84                              int            x,
     85                              int            y,
     86                              int            width,
     87                              int            height,
     88                              int            stride,
     89                              char          *data,
     90                              void          *loaderPrivate);
     91    void (*swrast_get_image)(__DRIdrawable *driDrawable,
     92                             int            x,
     93                             int            y,
     94                             int            width,
     95                             int            height,
     96                             char          *data,
     97                             void          *loaderPrivate);
     98 
     99    struct wl_drm *wl_drm;
    100 };
    101 
    102 struct gbm_dri_bo {
    103    struct gbm_bo base;
    104 
    105    __DRIimage *image;
    106 
    107    /* Used for cursors and the swrast front BO */
    108    uint32_t handle, size;
    109    void *map;
    110 };
    111 
    112 struct gbm_dri_surface {
    113    struct gbm_surface base;
    114 
    115    void *dri_private;
    116 };
    117 
    118 static inline struct gbm_dri_device *
    119 gbm_dri_device(struct gbm_device *gbm)
    120 {
    121    return (struct gbm_dri_device *) gbm;
    122 }
    123 
    124 static inline struct gbm_dri_bo *
    125 gbm_dri_bo(struct gbm_bo *bo)
    126 {
    127    return (struct gbm_dri_bo *) bo;
    128 }
    129 
    130 static inline struct gbm_dri_surface *
    131 gbm_dri_surface(struct gbm_surface *surface)
    132 {
    133    return (struct gbm_dri_surface *) surface;
    134 }
    135 
    136 static inline void *
    137 gbm_dri_bo_map_dumb(struct gbm_dri_bo *bo)
    138 {
    139    struct drm_mode_map_dumb map_arg;
    140    int ret;
    141 
    142    if (bo->image != NULL)
    143       return NULL;
    144 
    145    if (bo->map != NULL)
    146       return bo->map;
    147 
    148    memset(&map_arg, 0, sizeof(map_arg));
    149    map_arg.handle = bo->handle;
    150 
    151    ret = drmIoctl(bo->base.gbm->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_arg);
    152    if (ret)
    153       return NULL;
    154 
    155    bo->map = mmap(0, bo->size, PROT_WRITE,
    156                   MAP_SHARED, bo->base.gbm->fd, map_arg.offset);
    157    if (bo->map == MAP_FAILED) {
    158       bo->map = NULL;
    159       return NULL;
    160    }
    161 
    162    return bo->map;
    163 }
    164 
    165 static inline void
    166 gbm_dri_bo_unmap_dumb(struct gbm_dri_bo *bo)
    167 {
    168    munmap(bo->map, bo->size);
    169    bo->map = NULL;
    170 }
    171 
    172 #endif
    173