src/gallium/winsys/i915/drm/i915_drm_winsys.c

   1 #include <stdio.h>
   2 #include <sys/ioctl.h>
   3
   4 #include "drm-uapi/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 }