drm/vmwgfx: Update the user-space interface.
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / gpu / drm / vmwgfx / vmwgfx_ioctl.c
blob1c7a316454d80ceb9aaeb6c83d6ac6a82f1cae1f
1 /**************************************************************************
3 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
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:
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.
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
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26 **************************************************************************/
28 #include "vmwgfx_drv.h"
29 #include "vmwgfx_drm.h"
31 int vmw_getparam_ioctl(struct drm_device *dev, void *data,
32 struct drm_file *file_priv)
34 struct vmw_private *dev_priv = vmw_priv(dev);
35 struct drm_vmw_getparam_arg *param =
36 (struct drm_vmw_getparam_arg *)data;
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 = vmw_fifo_have_3d(dev_priv) ? 1 : 0;
47 break;
48 case DRM_VMW_PARAM_FIFO_OFFSET:
49 param->value = dev_priv->mmio_start;
50 break;
51 case DRM_VMW_PARAM_HW_CAPS:
52 param->value = dev_priv->capabilities;
53 break;
54 case DRM_VMW_PARAM_FIFO_CAPS:
55 param->value = dev_priv->fifo.capabilities;
56 break;
57 default:
58 DRM_ERROR("Illegal vmwgfx get param request: %d\n",
59 param->param);
60 return -EINVAL;
63 return 0;
66 int vmw_fifo_debug_ioctl(struct drm_device *dev, void *data,
67 struct drm_file *file_priv)
69 struct vmw_private *dev_priv = vmw_priv(dev);
70 struct vmw_fifo_state *fifo_state = &dev_priv->fifo;
71 struct drm_vmw_fifo_debug_arg *arg =
72 (struct drm_vmw_fifo_debug_arg *)data;
73 __le32 __user *buffer = (__le32 __user *)
74 (unsigned long)arg->debug_buffer;
76 if (unlikely(fifo_state->last_buffer == NULL))
77 return -EINVAL;
79 if (arg->debug_buffer_size < fifo_state->last_data_size) {
80 arg->used_size = arg->debug_buffer_size;
81 arg->did_not_fit = 1;
82 } else {
83 arg->used_size = fifo_state->last_data_size;
84 arg->did_not_fit = 0;
86 return copy_to_user(buffer, fifo_state->last_buffer, arg->used_size);