1 /*
2 * Copyright (C) 2006-2017 Oracle Corporation
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
23 #include "vbox_drv.h"
24 #include "vbox_err.h"
25 #include "vboxvideo_guest.h"
26 #include "vboxvideo_vbe.h"
27 #include "hgsmi_channels.h"
28
29 /**
30 * Set a video mode via an HGSMI request. The views must have been
31 * initialised first using @a VBoxHGSMISendViewInfo and if the mode is being
32 * set on the first display then it must be set first using registers.
33 * @param ctx The context containing the heap to use
34 * @param display The screen number
35 * @param origin_x The horizontal displacement relative to the first scrn
36 * @param origin_y The vertical displacement relative to the first screen
37 * @param start_offset The offset of the visible area of the framebuffer
38 * relative to the framebuffer start
39 * @param pitch The offset in bytes between the starts of two adjecent
40 * scan lines in video RAM
41 * @param width The mode width
42 * @param height The mode height
43 * @param bpp The colour depth of the mode
44 * @param flags Flags
45 */
hgsmi_process_display_info(struct gen_pool * ctx,u32 display,s32 origin_x,s32 origin_y,u32 start_offset,u32 pitch,u32 width,u32 height,u16 bpp,u16 flags)46 void hgsmi_process_display_info(struct gen_pool *ctx, u32 display,
47 s32 origin_x, s32 origin_y, u32 start_offset,
48 u32 pitch, u32 width, u32 height,
49 u16 bpp, u16 flags)
50 {
51 struct vbva_infoscreen *p;
52
53 p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
54 VBVA_INFO_SCREEN);
55 if (!p)
56 return;
57
58 p->view_index = display;
59 p->origin_x = origin_x;
60 p->origin_y = origin_y;
61 p->start_offset = start_offset;
62 p->line_size = pitch;
63 p->width = width;
64 p->height = height;
65 p->bits_per_pixel = bpp;
66 p->flags = flags;
67
68 hgsmi_buffer_submit(ctx, p);
69 hgsmi_buffer_free(ctx, p);
70 }
71
72 /**
73 * Report the rectangle relative to which absolute pointer events should be
74 * expressed. This information remains valid until the next VBVA resize event
75 * for any screen, at which time it is reset to the bounding rectangle of all
76 * virtual screens.
77 * @param ctx The context containing the heap to use.
78 * @param origin_x Upper left X co-ordinate relative to the first screen.
79 * @param origin_y Upper left Y co-ordinate relative to the first screen.
80 * @param width Rectangle width.
81 * @param height Rectangle height.
82 * @returns 0 on success, -errno on failure
83 */
hgsmi_update_input_mapping(struct gen_pool * ctx,s32 origin_x,s32 origin_y,u32 width,u32 height)84 int hgsmi_update_input_mapping(struct gen_pool *ctx, s32 origin_x, s32 origin_y,
85 u32 width, u32 height)
86 {
87 struct vbva_report_input_mapping *p;
88
89 p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
90 VBVA_REPORT_INPUT_MAPPING);
91 if (!p)
92 return -ENOMEM;
93
94 p->x = origin_x;
95 p->y = origin_y;
96 p->cx = width;
97 p->cy = height;
98
99 hgsmi_buffer_submit(ctx, p);
100 hgsmi_buffer_free(ctx, p);
101
102 return 0;
103 }
104
105 /**
106 * Get most recent video mode hints.
107 * @param ctx The context containing the heap to use.
108 * @param screens The number of screens to query hints for, starting at 0.
109 * @param hints Array of vbva_modehint structures for receiving the hints.
110 * @returns 0 on success, -errno on failure
111 */
hgsmi_get_mode_hints(struct gen_pool * ctx,unsigned int screens,struct vbva_modehint * hints)112 int hgsmi_get_mode_hints(struct gen_pool *ctx, unsigned int screens,
113 struct vbva_modehint *hints)
114 {
115 struct vbva_query_mode_hints *p;
116 size_t size;
117
118 if (WARN_ON(!hints))
119 return -EINVAL;
120
121 size = screens * sizeof(struct vbva_modehint);
122 p = hgsmi_buffer_alloc(ctx, sizeof(*p) + size, HGSMI_CH_VBVA,
123 VBVA_QUERY_MODE_HINTS);
124 if (!p)
125 return -ENOMEM;
126
127 p->hints_queried_count = screens;
128 p->hint_structure_guest_size = sizeof(struct vbva_modehint);
129 p->rc = VERR_NOT_SUPPORTED;
130
131 hgsmi_buffer_submit(ctx, p);
132
133 if (RT_FAILURE(p->rc)) {
134 hgsmi_buffer_free(ctx, p);
135 return -EIO;
136 }
137
138 memcpy(hints, ((u8 *)p) + sizeof(struct vbva_query_mode_hints), size);
139 hgsmi_buffer_free(ctx, p);
140
141 return 0;
142 }
143
