src/gallium/winsys/i965/drm/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 #include "../../sw/drm/sw_drm_api.h"
  14
  15 /*
  16  * Helper functions
  17  */
  18
  19
  20 static void
  21 i965_libdrm_get_device_id(unsigned int *device_id)
  22 {
  23    char path[512];
  24    FILE *file;
  25    void *shutup_gcc;
  26
  27    /*
  28     * FIXME: Fix this up to use a drm ioctl or whatever.
  29     */
  30
  31    snprintf(path, sizeof(path), "/sys/class/drm/card0/device/device");
  32    file = fopen(path, "r");
  33    if (!file) {
  34       return;
  35    }
  36
  37    shutup_gcc = fgets(path, sizeof(path), file);
  38    sscanf(path, "%x", device_id);
  39    fclose(file);
  40 }
  41
  42 static void
  43 i965_libdrm_winsys_destroy(struct brw_winsys_screen *iws)
  44 {
  45    struct i965_libdrm_winsys *idws = i965_libdrm_winsys(iws);
  46
  47    if (BRW_DUMP)
  48       debug_printf("%s\n", __FUNCTION__);
  49
  50    drm_intel_bufmgr_destroy(idws->gem);
  51
  52    FREE(idws);
  53 }
  54
  55 static struct pipe_screen *
  56 i965_libdrm_create_screen(struct drm_api *api, int drmFD,
  57                           struct drm_create_screen_arg *arg)
  58 {
  59    struct i965_libdrm_winsys *idws;
  60    unsigned int deviceID;
  61
  62    debug_printf("%s\n", __FUNCTION__);
  63
  64    if (arg != NULL) {
  65       switch(arg->mode) {
  66       case DRM_CREATE_NORMAL:
  67          break;
  68       default:
  69          return NULL;
  70       }
  71    }
  72
  73    idws = CALLOC_STRUCT(i965_libdrm_winsys);
  74    if (!idws)
  75       return NULL;
  76
  77    i965_libdrm_get_device_id(&deviceID);
  78
  79    i965_libdrm_winsys_init_buffer_functions(idws);
  80
  81    idws->fd = drmFD;
  82    idws->id = deviceID;
  83
  84    idws->base.destroy = i965_libdrm_winsys_destroy;
  85
  86    idws->gem = drm_intel_bufmgr_gem_init(idws->fd, BRW_BATCH_SIZE);
  87    drm_intel_bufmgr_gem_enable_reuse(idws->gem);
  88
  89    idws->send_cmd = !debug_get_bool_option("BRW_NO_HW", FALSE);
  90
  91    return brw_create_screen(&idws->base, deviceID);
  92 }
  93
  94
  95 static void
  96 destroy(struct drm_api *api)
  97 {
  98    if (BRW_DUMP)
  99       debug_printf("%s\n", __FUNCTION__);
 100
 101 }
 102
 103 struct drm_api i965_libdrm_api =
 104 {
 105    .name = "i965",
 106    .create_screen = i965_libdrm_create_screen,
 107    .destroy = destroy,
 108 };
 109
 110 struct drm_api *
 111 drm_api_create()
 112 {
 113    struct drm_api *api = NULL;
 114
 115    if (api == NULL && debug_get_bool_option("BRW_SOFTPIPE", FALSE))
 116       api = sw_drm_api_create(&i965_libdrm_api);
 117
 118    if (api == NULL)
 119       api = &i965_libdrm_api;
 120
 121    return trace_drm_create(api);
 122 }