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  1. #include <stdio.h>
  2. #include <sys/ioctl.h>
  3.  
  4. #include "i915_drm.h"
  5.  
  6. #include "state_tracker/drm_driver.h"
  7.  
  8. #include "i915_drm_winsys.h"
  9. #include "i915_drm_public.h"
  10. #include "util/u_memory.h"
  11.  
  12.  
  13. /*
  14.  * Helper functions
  15.  */
  16.  
  17.  
  18. static void
  19. i915_drm_get_device_id(int fd, unsigned int *device_id)
  20. {
  21.    int ret;
  22.    struct drm_i915_getparam gp;
  23.  
  24.    gp.param = I915_PARAM_CHIPSET_ID;
  25.    gp.value = (int *)device_id;
  26.  
  27.    ret = ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp, sizeof(gp));
  28.    assert(ret == 0);
  29. }
  30.  
  31. static int
  32. i915_drm_aperture_size(struct i915_winsys *iws)
  33. {
  34.    struct i915_drm_winsys *idws = i915_drm_winsys(iws);
  35.    size_t aper_size, mappable_size;
  36.  
  37.    drm_intel_get_aperture_sizes(idws->fd, &mappable_size, &aper_size);
  38.  
  39.    return aper_size >> 20;
  40. }
  41.  
  42. static void
  43. i915_drm_winsys_destroy(struct i915_winsys *iws)
  44. {
  45.    struct i915_drm_winsys *idws = i915_drm_winsys(iws);
  46.  
  47.    drm_intel_bufmgr_destroy(idws->gem_manager);
  48.  
  49.    FREE(idws);
  50. }
  51.  
  52. struct i915_winsys *
  53. i915_drm_winsys_create(int drmFD)
  54. {
  55.    struct i915_drm_winsys *idws;
  56.    unsigned int deviceID;
  57.  
  58.    idws = CALLOC_STRUCT(i915_drm_winsys);
  59.    if (!idws)
  60.       return NULL;
  61.  
  62.    i915_drm_get_device_id(drmFD, &deviceID);
  63.  
  64.    i915_drm_winsys_init_batchbuffer_functions(idws);
  65.    i915_drm_winsys_init_buffer_functions(idws);
  66.    i915_drm_winsys_init_fence_functions(idws);
  67.  
  68.    idws->fd = drmFD;
  69.    idws->base.pci_id = deviceID;
  70.    idws->max_batch_size = 1 * 4096;
  71.  
  72.    idws->base.aperture_size = i915_drm_aperture_size;
  73.    idws->base.destroy = i915_drm_winsys_destroy;
  74.  
  75.    idws->gem_manager = drm_intel_bufmgr_gem_init(idws->fd, idws->max_batch_size);
  76.    drm_intel_bufmgr_gem_enable_reuse(idws->gem_manager);
  77.    drm_intel_bufmgr_gem_enable_fenced_relocs(idws->gem_manager);
  78.  
  79.    idws->dump_cmd = debug_get_bool_option("I915_DUMP_CMD", FALSE);
  80.    idws->dump_raw_file = debug_get_option("I915_DUMP_RAW_FILE", NULL);
  81.    idws->send_cmd = !debug_get_bool_option("I915_NO_HW", FALSE);
  82.  
  83.    return &idws->base;
  84. }
  85.