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1 /*
2  * Copyright 2013 Red Hat Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: Dave Airlie
23  *          Alon Levy
24  */
25 
26 #include "qxl_drv.h"
27 #include "qxl_object.h"
28 
29 /* dumb ioctls implementation */
30 
qxl_mode_dumb_create(struct drm_file * file_priv,struct drm_device * dev,struct drm_mode_create_dumb * args)31 int qxl_mode_dumb_create(struct drm_file *file_priv,
32 			    struct drm_device *dev,
33 			    struct drm_mode_create_dumb *args)
34 {
35 	struct qxl_device *qdev = dev->dev_private;
36 	struct qxl_bo *qobj;
37 	uint32_t handle;
38 	int r;
39 	struct qxl_surface surf;
40 	uint32_t pitch, format;
41 	pitch = args->width * ((args->bpp + 1) / 8);
42 	args->size = pitch * args->height;
43 	args->size = ALIGN(args->size, PAGE_SIZE);
44 
45 	switch (args->bpp) {
46 	case 16:
47 		format = SPICE_SURFACE_FMT_16_565;
48 		break;
49 	case 32:
50 		format = SPICE_SURFACE_FMT_32_xRGB;
51 		break;
52 	default:
53 		return -EINVAL;
54 	}
55 
56 	surf.width = args->width;
57 	surf.height = args->height;
58 	surf.stride = pitch;
59 	surf.format = format;
60 	r = qxl_gem_object_create_with_handle(qdev, file_priv,
61 					      QXL_GEM_DOMAIN_VRAM,
62 					      args->size, &surf, &qobj,
63 					      &handle);
64 	if (r)
65 		return r;
66 	args->pitch = pitch;
67 	args->handle = handle;
68 	return 0;
69 }
70 
qxl_mode_dumb_destroy(struct drm_file * file_priv,struct drm_device * dev,uint32_t handle)71 int qxl_mode_dumb_destroy(struct drm_file *file_priv,
72 			     struct drm_device *dev,
73 			     uint32_t handle)
74 {
75 	return drm_gem_handle_delete(file_priv, handle);
76 }
77 
qxl_mode_dumb_mmap(struct drm_file * file_priv,struct drm_device * dev,uint32_t handle,uint64_t * offset_p)78 int qxl_mode_dumb_mmap(struct drm_file *file_priv,
79 		       struct drm_device *dev,
80 		       uint32_t handle, uint64_t *offset_p)
81 {
82 	struct drm_gem_object *gobj;
83 	struct qxl_bo *qobj;
84 
85 	BUG_ON(!offset_p);
86 	gobj = drm_gem_object_lookup(dev, file_priv, handle);
87 	if (gobj == NULL)
88 		return -ENOENT;
89 	qobj = gem_to_qxl_bo(gobj);
90 	*offset_p = qxl_bo_mmap_offset(qobj);
91 	drm_gem_object_unreference_unlocked(gobj);
92 	return 0;
93 }
94