src/gallium/winsys/drm/i965/gem/i965_drm_api.c

   1
   2 #include <stdio.h>
   3 #include "state_tracker/drm_api.h"
   4
   5 #include "i965_drm_winsys.h"
   6 #include "util/u_memory.h"
   7
   8 #include "i965/brw_context.h"        /* XXX: shouldn't be doing this */
   9 #include "i965/brw_screen.h"         /* XXX: shouldn't be doing this */
  10
  11 #include "trace/tr_drm.h"
  12
  13 /*
  14  * Helper functions
  15  */
  16
  17
  18 static void
  19 i965_libdrm_get_device_id(unsigned int *device_id)
  20 {
  21    char path[512];
  22    FILE *file;
  23    void *shutup_gcc;
  24
  25    /*
  26     * FIXME: Fix this up to use a drm ioctl or whatever.
  27     */
  28
  29    snprintf(path, sizeof(path), "/sys/class/drm/card0/device/device");
  30    file = fopen(path, "r");
  31    if (!file) {
  32       return;
  33    }
  34
  35    shutup_gcc = fgets(path, sizeof(path), file);
  36    sscanf(path, "%x", device_id);
  37    fclose(file);
  38 }
  39
  40 static void
  41 i965_libdrm_winsys_destroy(struct brw_winsys_screen *iws)
  42 {
  43    struct i965_libdrm_winsys *idws = i965_libdrm_winsys(iws);
  44
  45    if (BRW_DUMP)
  46       debug_printf("%s\n", __FUNCTION__);
  47
  48    drm_intel_bufmgr_destroy(idws->gem);
  49
  50    FREE(idws);
  51 }
  52
  53 static struct pipe_screen *
  54 i965_libdrm_create_screen(struct drm_api *api, int drmFD,
  55                           struct drm_create_screen_arg *arg)
  56 {
  57    struct i965_libdrm_winsys *idws;
  58    unsigned int deviceID;
  59
  60    debug_printf("%s\n", __FUNCTION__);
  61
  62    if (arg != NULL) {
  63       switch(arg->mode) {
  64       case DRM_CREATE_NORMAL:
  65          break;
  66       default:
  67          return NULL;
  68       }
  69    }
  70
  71    idws = CALLOC_STRUCT(i965_libdrm_winsys);
  72    if (!idws)
  73       return NULL;
  74
  75    i965_libdrm_get_device_id(&deviceID);
  76
  77    i965_libdrm_winsys_init_buffer_functions(idws);
  78
  79    idws->fd = drmFD;
  80    idws->id = deviceID;
  81
  82    idws->base.destroy = i965_libdrm_winsys_destroy;
  83
  84    idws->gem = drm_intel_bufmgr_gem_init(idws->fd, BRW_BATCH_SIZE);
  85    drm_intel_bufmgr_gem_enable_reuse(idws->gem);
  86
  87    idws->send_cmd = !debug_get_bool_option("BRW_NO_HW", FALSE);
  88
  89    return brw_create_screen(&idws->base, deviceID);
  90 }
  91
  92
  93 static void
  94 destroy(struct drm_api *api)
  95 {
  96    if (BRW_DUMP)
  97       debug_printf("%s\n", __FUNCTION__);
  98
  99 }
 100
 101 struct drm_api i965_libdrm_api =
 102 {
 103    .name = "i965",
 104    .create_screen = i965_libdrm_create_screen,
 105    .destroy = destroy,
 106 };
 107
 108 struct drm_api *
 109 drm_api_create()
 110 {
 111    return trace_drm_create(&i965_libdrm_api);
 112 }