src/driclient/src/driclient.c

   1 #include "driclient.h"
   2 #include <assert.h>
   3 #include <stdlib.h>
   4
   5 int driCreateScreen(Display *display, int screen, dri_screen_t **dri_screen, dri_framebuffer_t *dri_framebuf)
   6 {
   7         int             evbase, errbase;
   8         char            *driver_name;
   9         int             newly_opened;
  10         drm_magic_t     magic;
  11         drmVersionPtr   drm_version;
  12         drm_handle_t    sarea_handle;
  13         char            *bus_id;
  14         dri_screen_t    *dri_scrn;
  15
  16         assert(display);
  17         assert(dri_screen);
  18
  19         if (!XF86DRIQueryExtension(display, &evbase, &errbase))
  20                 return 1;
  21
  22         dri_scrn = calloc(1, sizeof(dri_screen_t));
  23
  24         if (!dri_scrn)
  25                 return 1;
  26
  27         if (!XF86DRIQueryVersion(display, &dri_scrn->dri.major, &dri_scrn->dri.minor, &dri_scrn->dri.patch))
  28                 goto free_screen;
  29
  30         dri_scrn->display = display;
  31         dri_scrn->num = screen;
  32         dri_scrn->draw_lock_id = 1;
  33
  34         if (!XF86DRIOpenConnection(display, screen, &sarea_handle, &bus_id))
  35                 goto free_screen;
  36
  37         dri_scrn->fd = -1;
  38         dri_scrn->fd = drmOpenOnce(NULL, bus_id, &newly_opened);
  39         XFree(bus_id);
  40
  41         if (dri_scrn->fd < 0)
  42                 goto close_connection;
  43
  44         if (drmGetMagic(dri_scrn->fd, &magic))
  45                 goto close_drm;
  46
  47         drm_version = drmGetVersion(dri_scrn->fd);
  48
  49         if (!drm_version)
  50                 goto close_drm;
  51
  52         dri_scrn->drm.major = drm_version->version_major;
  53         dri_scrn->drm.minor = drm_version->version_minor;
  54         dri_scrn->drm.patch = drm_version->version_patchlevel;
  55         drmFreeVersion(drm_version);
  56
  57         if (!XF86DRIAuthConnection(display, screen, magic))
  58                 goto close_drm;
  59
  60         if (!XF86DRIGetClientDriverName
  61         (
  62                 display,
  63                 screen,
  64                 &dri_scrn->ddx.major,
  65                 &dri_scrn->ddx.minor,
  66                 &dri_scrn->ddx.patch,
  67                 &driver_name
  68         ))
  69                 goto close_drm;
  70
  71         if (drmMap(dri_scrn->fd, sarea_handle, SAREA_MAX, (drmAddress)&dri_scrn->sarea))
  72                 goto close_drm;
  73
  74         dri_scrn->drawable_hash = drmHashCreate();
  75
  76         if (!dri_scrn->drawable_hash)
  77                 goto unmap_sarea;
  78
  79         if (dri_framebuf)
  80         {
  81                 if (!XF86DRIGetDeviceInfo
  82                 (
  83                         display,
  84                         screen, &dri_framebuf->drm_handle,
  85                         &dri_framebuf->base,
  86                         &dri_framebuf->size,
  87                         &dri_framebuf->stride,
  88                         &dri_framebuf->private_size,
  89                         &dri_framebuf->private
  90                 ))
  91                         goto destroy_hash;
  92         }
  93
  94         *dri_screen = dri_scrn;
  95
  96         return 0;
  97
  98 destroy_hash:
  99         drmHashDestroy(dri_scrn->drawable_hash);
 100 unmap_sarea:
 101         drmUnmap(dri_scrn->sarea, SAREA_MAX);
 102 close_drm:
 103         drmCloseOnce(dri_scrn->fd);
 104 close_connection:
 105         XF86DRICloseConnection(display, screen);
 106 free_screen:
 107         free(dri_scrn);
 108
 109         return 1;
 110 }
 111
 112 int driDestroyScreen(dri_screen_t *dri_screen)
 113 {
 114         assert(dri_screen);
 115
 116         drmHashDestroy(dri_screen->drawable_hash);
 117         drmUnmap(dri_screen->sarea, SAREA_MAX);
 118         drmCloseOnce(dri_screen->fd);
 119         XF86DRICloseConnection(dri_screen->display, dri_screen->num);
 120         free(dri_screen);
 121
 122         return 0;
 123 }
 124
 125 int driCreateDrawable(dri_screen_t *dri_screen, Drawable drawable, dri_drawable_t **dri_drawable)
 126 {
 127         int             evbase, errbase;
 128         dri_drawable_t  *dri_draw;
 129
 130         assert(dri_screen);
 131         assert(dri_drawable);
 132
 133         if (!XF86DRIQueryExtension(dri_screen->display, &evbase, &errbase))
 134                 return 1;
 135
 136         if (!drmHashLookup(dri_screen->drawable_hash, drawable, (void**)dri_drawable))
 137         {
 138                 /* Found */
 139                 (*dri_drawable)->refcount++;
 140                 return 0;
 141         }
 142
 143         dri_draw = calloc(1, sizeof(dri_drawable_t));
 144
 145         if (!dri_draw)
 146                 return 1;
 147
 148         if (!XF86DRICreateDrawable(dri_screen->display, 0, drawable, &dri_draw->drm_drawable))
 149         {
 150                 free(dri_draw);
 151                 return 1;
 152         }
 153
 154         dri_draw->x_drawable = drawable;
 155         dri_draw->sarea_index = 0;
 156         dri_draw->sarea_stamp = NULL;
 157         dri_draw->last_sarea_stamp = 0;
 158         dri_draw->dri_screen = dri_screen;
 159         dri_draw->refcount = 1;
 160
 161         if (drmHashInsert(dri_screen->drawable_hash, drawable, dri_draw))
 162         {
 163                 XF86DRIDestroyDrawable(dri_screen->display, dri_screen->num, drawable);
 164                 free(dri_draw);
 165                 return 1;
 166         }
 167
 168         if (!dri_draw->sarea_stamp || *dri_draw->sarea_stamp != dri_draw->last_sarea_stamp)
 169         {
 170                 DRM_SPINLOCK(&dri_screen->sarea->drawable_lock, dri_screen->draw_lock_id);
 171
 172                 if (driUpdateDrawableInfo(dri_draw))
 173                 {
 174                         XF86DRIDestroyDrawable(dri_screen->display, dri_screen->num, drawable);
 175                         free(dri_draw);
 176                         DRM_SPINUNLOCK(&dri_screen->sarea->drawable_lock, dri_screen->draw_lock_id);
 177                         return 1;
 178                 }
 179
 180                 DRM_SPINUNLOCK(&dri_screen->sarea->drawable_lock, dri_screen->draw_lock_id);
 181         }
 182
 183         *dri_drawable = dri_draw;
 184
 185         return 0;
 186 }
 187
 188 int driUpdateDrawableInfo(dri_drawable_t *dri_drawable)
 189 {
 190         assert(dri_drawable);
 191
 192         if (dri_drawable->cliprects)
 193         {
 194                 XFree(dri_drawable->cliprects);
 195                 dri_drawable->cliprects = NULL;
 196         }
 197         if (dri_drawable->back_cliprects)
 198         {
 199                 XFree(dri_drawable->back_cliprects);
 200                 dri_drawable->back_cliprects = NULL;
 201         }
 202
 203         DRM_SPINUNLOCK(&dri_drawable->dri_screen->sarea->drawable_lock, dri_drawable->dri_screen->draw_lock_id);
 204
 205         if (!XF86DRIGetDrawableInfo
 206         (
 207                 dri_drawable->dri_screen->display,
 208                 dri_drawable->dri_screen->num,
 209                 dri_drawable->x_drawable,
 210                 &dri_drawable->sarea_index,
 211                 &dri_drawable->last_sarea_stamp,
 212                 &dri_drawable->x,
 213                 &dri_drawable->y,
 214                 &dri_drawable->w,
 215                 &dri_drawable->h,
 216                 &dri_drawable->num_cliprects,
 217                 &dri_drawable->cliprects,
 218                 &dri_drawable->back_x,
 219                 &dri_drawable->back_y,
 220                 &dri_drawable->num_back_cliprects,
 221                 &dri_drawable->back_cliprects
 222         ))
 223         {
 224                 dri_drawable->sarea_stamp = &dri_drawable->last_sarea_stamp;
 225                 dri_drawable->num_cliprects = 0;
 226                 dri_drawable->cliprects = NULL;
 227                 dri_drawable->num_back_cliprects = 0;
 228                 dri_drawable->back_cliprects = 0;
 229
 230                 return 1;
 231         }
 232         else
 233                 dri_drawable->sarea_stamp = &dri_drawable->dri_screen->sarea->drawableTable[dri_drawable->sarea_index].stamp;
 234
 235         DRM_SPINLOCK(&dri_drawable->dri_screen->sarea->drawable_lock, dri_drawable->dri_screen->draw_lock_id);
 236
 237         return 0;
 238 }
 239
 240 int driDestroyDrawable(dri_drawable_t *dri_drawable)
 241 {
 242         assert(dri_drawable);
 243
 244         if (--dri_drawable->refcount == 0)
 245         {
 246                 if (dri_drawable->cliprects)
 247                         XFree(dri_drawable->cliprects);
 248                 if (dri_drawable->back_cliprects)
 249                         XFree(dri_drawable->back_cliprects);
 250                 drmHashDelete(dri_drawable->dri_screen->drawable_hash, dri_drawable->x_drawable);
 251                 XF86DRIDestroyDrawable(dri_drawable->dri_screen->display, dri_drawable->dri_screen->num, dri_drawable->x_drawable);
 252                 free(dri_drawable);
 253         }
 254
 255         return 0;
 256 }
 257
 258 int driCreateContext(dri_screen_t *dri_screen, Visual *visual, dri_context_t **dri_context)
 259 {
 260         int             evbase, errbase;
 261         dri_context_t   *dri_ctx;
 262
 263         assert(dri_screen);
 264         assert(visual);
 265         assert(dri_context);
 266
 267         if (!XF86DRIQueryExtension(dri_screen->display, &evbase, &errbase))
 268                 return 1;
 269
 270         dri_ctx = calloc(1, sizeof(dri_context_t));
 271
 272         if (!dri_ctx)
 273                 return 1;
 274
 275         if (!XF86DRICreateContext(dri_screen->display, dri_screen->num, visual, &dri_ctx->id, &dri_ctx->drm_context))
 276         {
 277                 free(dri_ctx);
 278                 return 1;
 279         }
 280
 281         dri_ctx->dri_screen = dri_screen;
 282         *dri_context = dri_ctx;
 283
 284         return 0;
 285 }
 286
 287 int driDestroyContext(dri_context_t *dri_context)
 288 {
 289         assert(dri_context);
 290
 291         XF86DRIDestroyContext(dri_context->dri_screen->display, dri_context->dri_screen->num, dri_context->id);
 292         free(dri_context);
 293
 294         return 0;
 295 }