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 }
82