drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c

   1 /**************************************************************************
   2  *
   3  * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "vmwgfx_drv.h"
  29 #include "vmwgfx_drm.h"
  30
  31 int vmw_getparam_ioctl(struct drm_device *dev, void *data,
  32                        struct drm_file *file_priv)
  33 {
  34         struct vmw_private *dev_priv = vmw_priv(dev);
  35         struct drm_vmw_getparam_arg *param =
  36             (struct drm_vmw_getparam_arg *)data;
  37
  38         switch (param->param) {
  39         case DRM_VMW_PARAM_NUM_STREAMS:
  40                 param->value = vmw_overlay_num_overlays(dev_priv);
  41                 break;
  42         case DRM_VMW_PARAM_NUM_FREE_STREAMS:
  43                 param->value = vmw_overlay_num_free_overlays(dev_priv);
  44                 break;
  45         case DRM_VMW_PARAM_3D:
  46                 param->value = dev_priv->capabilities & SVGA_CAP_3D ? 1 : 0;
  47                 break;
  48         case DRM_VMW_PARAM_FIFO_OFFSET:
  49                 param->value = dev_priv->mmio_start;
  50                 break;
  51         default:
  52                 DRM_ERROR("Illegal vmwgfx get param request: %d\n",
  53                           param->param);
  54                 return -EINVAL;
  55         }
  56
  57         return 0;
  58 }
  59
  60 int vmw_fifo_debug_ioctl(struct drm_device *dev, void *data,
  61                          struct drm_file *file_priv)
  62 {
  63         struct vmw_private *dev_priv = vmw_priv(dev);
  64         struct vmw_fifo_state *fifo_state = &dev_priv->fifo;
  65         struct drm_vmw_fifo_debug_arg *arg =
  66             (struct drm_vmw_fifo_debug_arg *)data;
  67         __le32 __user *buffer = (__le32 __user *)
  68             (unsigned long)arg->debug_buffer;
  69
  70         if (unlikely(fifo_state->last_buffer == NULL))
  71                 return -EINVAL;
  72
  73         if (arg->debug_buffer_size < fifo_state->last_data_size) {
  74                 arg->used_size = arg->debug_buffer_size;
  75                 arg->did_not_fit = 1;
  76         } else {
  77                 arg->used_size = fifo_state->last_data_size;
  78                 arg->did_not_fit = 0;
  79         }
  80         return copy_to_user(buffer, fifo_state->last_buffer, arg->used_size);
  81 }