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23 #ifndef __HGSMI_CH_SETUP_H__
24 #define __HGSMI_CH_SETUP_H__
27 * Tell the host the location of hgsmi_host_flags structure, where the host
28 * can write information about pending buffers, etc, and which can be quickly
29 * polled by the guest without a need to port IO.
31 #define HGSMI_CC_HOST_FLAGS_LOCATION 0
33 struct hgsmi_buffer_location {
38 /* HGSMI setup and configuration data structures. */
39 /* host->guest commands pending, should be accessed under FIFO lock only */
40 #define HGSMIHOSTFLAGS_COMMANDS_PENDING 0x01u
41 /* IRQ is fired, should be accessed under VGAState::lock only */
42 #define HGSMIHOSTFLAGS_IRQ 0x02u
43 /* vsync interrupt flag, should be accessed under VGAState::lock only */
44 #define HGSMIHOSTFLAGS_VSYNC 0x10u
45 /** monitor hotplug flag, should be accessed under VGAState::lock only */
46 #define HGSMIHOSTFLAGS_HOTPLUG 0x20u
48 * Cursor capability state change flag, should be accessed under
49 * VGAState::lock only. @see vbva_conf32.
51 #define HGSMIHOSTFLAGS_CURSOR_CAPABILITIES 0x40u
53 struct hgsmi_host_flags {
55 * Host flags can be accessed and modified in multiple threads
56 * concurrently, e.g. CrOpenGL HGCM and GUI threads when completing
57 * HGSMI 3D and Video Accel respectively, EMT thread when dealing with
58 * HGSMI command processing, etc.
59 * Besides settings/cleaning flags atomically, some flags have their
60 * own special sync restrictions, see comments for flags above.