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

   1 #include <stdio.h>
   2
   3 #include "state_tracker/drm_driver.h"
   4
   5 #include "i915_drm_winsys.h"
   6 #include "i915_drm_public.h"
   7 #include "util/u_memory.h"
   8
   9
  10 /*
  11  * Helper functions
  12  */
  13
  14
  15 static void
  16 i915_drm_get_device_id(unsigned int *device_id)
  17 {
  18    char path[512];
  19    FILE *file;
  20    void *shutup_gcc;
  21
  22    /*
  23     * FIXME: Fix this up to use a drm ioctl or whatever.
  24     */
  25
  26    snprintf(path, sizeof(path), "/sys/class/drm/card0/device/device");
  27    file = fopen(path, "r");
  28    if (!file) {
  29       return;
  30    }
  31
  32    shutup_gcc = fgets(path, sizeof(path), file);
  33    (void) shutup_gcc;
  34    sscanf(path, "%x", device_id);
  35    fclose(file);
  36 }
  37
  38 static void
  39 i915_drm_winsys_destroy(struct i915_winsys *iws)
  40 {
  41    struct i915_drm_winsys *idws = i915_drm_winsys(iws);
  42
  43    drm_intel_bufmgr_destroy(idws->pools.gem);
  44
  45    FREE(idws);
  46 }
  47
  48 struct i915_winsys *
  49 i915_drm_winsys_create(int drmFD)
  50 {
  51    struct i915_drm_winsys *idws;
  52    unsigned int deviceID;
  53
  54    idws = CALLOC_STRUCT(i915_drm_winsys);
  55    if (!idws)
  56       return NULL;
  57
  58    i915_drm_get_device_id(&deviceID);
  59
  60    i915_drm_winsys_init_batchbuffer_functions(idws);
  61    i915_drm_winsys_init_buffer_functions(idws);
  62    i915_drm_winsys_init_fence_functions(idws);
  63
  64    idws->fd = drmFD;
  65    idws->base.pci_id = deviceID;
  66    idws->max_batch_size = 16 * 4096;
  67
  68    idws->base.destroy = i915_drm_winsys_destroy;
  69
  70    idws->pools.gem = drm_intel_bufmgr_gem_init(idws->fd, idws->max_batch_size);
  71    drm_intel_bufmgr_gem_enable_reuse(idws->pools.gem);
  72
  73    idws->dump_cmd = debug_get_bool_option("I915_DUMP_CMD", FALSE);
  74    idws->send_cmd = !debug_get_bool_option("I915_NO_HW", FALSE);
  75
  76    return &idws->base;
  77 }