src/gallium/winsys/i965/drm/i965_drm_winsys.c

   1
   2 #include <stdio.h>
   3 #include "state_tracker/drm_driver.h"
   4
   5 #include "i965_drm_winsys.h"
   6 #include "i965_drm_public.h"
   7 #include "util/u_memory.h"
   8
   9 /*
  10  * Helper functions
  11  */
  12
  13
  14 static void
  15 i965_libdrm_get_device_id(unsigned int *device_id)
  16 {
  17    char path[512];
  18    FILE *file;
  19    void *shutup_gcc;
  20
  21    /*
  22     * FIXME: Fix this up to use a drm ioctl or whatever.
  23     */
  24
  25    snprintf(path, sizeof(path), "/sys/class/drm/card0/device/device");
  26    file = fopen(path, "r");
  27    if (!file) {
  28       return;
  29    }
  30
  31    shutup_gcc = fgets(path, sizeof(path), file);
  32    sscanf(path, "%x", device_id);
  33    fclose(file);
  34 }
  35
  36 static void
  37 i965_libdrm_winsys_destroy(struct brw_winsys_screen *iws)
  38 {
  39    struct i965_libdrm_winsys *idws = i965_libdrm_winsys(iws);
  40
  41    if (BRW_DUMP)
  42       debug_printf("%s\n", __FUNCTION__);
  43
  44    drm_intel_bufmgr_destroy(idws->gem);
  45
  46    FREE(idws);
  47 }
  48
  49 struct brw_winsys_screen *
  50 i965_drm_winsys_screen_create(int drmFD)
  51 {
  52    struct i965_libdrm_winsys *idws;
  53
  54    debug_printf("%s\n", __FUNCTION__);
  55
  56    idws = CALLOC_STRUCT(i965_libdrm_winsys);
  57    if (!idws)
  58       return NULL;
  59
  60    i965_libdrm_get_device_id(&idws->base.pci_id);
  61
  62    i965_libdrm_winsys_init_buffer_functions(idws);
  63
  64    idws->fd = drmFD;
  65
  66    idws->base.destroy = i965_libdrm_winsys_destroy;
  67
  68    idws->gem = drm_intel_bufmgr_gem_init(idws->fd, BRW_BATCH_SIZE);
  69    drm_intel_bufmgr_gem_enable_reuse(idws->gem);
  70
  71    idws->send_cmd = !debug_get_bool_option("BRW_NO_HW", FALSE);
  72
  73    return &idws->base;
  74 }