67 lines
2.6 KiB
C
67 lines
2.6 KiB
C
/*
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* Copyright (C) 2006-2017 Oracle Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __HGSMI_CH_SETUP_H__
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#define __HGSMI_CH_SETUP_H__
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/*
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* Tell the host the location of hgsmi_host_flags structure, where the host
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* can write information about pending buffers, etc, and which can be quickly
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* polled by the guest without a need to port IO.
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*/
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#define HGSMI_CC_HOST_FLAGS_LOCATION 0
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struct hgsmi_buffer_location {
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u32 buf_location;
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u32 buf_len;
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} __packed;
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/* HGSMI setup and configuration data structures. */
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/* host->guest commands pending, should be accessed under FIFO lock only */
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#define HGSMIHOSTFLAGS_COMMANDS_PENDING 0x01u
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/* IRQ is fired, should be accessed under VGAState::lock only */
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#define HGSMIHOSTFLAGS_IRQ 0x02u
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/* vsync interrupt flag, should be accessed under VGAState::lock only */
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#define HGSMIHOSTFLAGS_VSYNC 0x10u
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/** monitor hotplug flag, should be accessed under VGAState::lock only */
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#define HGSMIHOSTFLAGS_HOTPLUG 0x20u
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/**
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* Cursor capability state change flag, should be accessed under
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* VGAState::lock only. @see vbva_conf32.
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*/
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#define HGSMIHOSTFLAGS_CURSOR_CAPABILITIES 0x40u
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struct hgsmi_host_flags {
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/*
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* Host flags can be accessed and modified in multiple threads
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* concurrently, e.g. CrOpenGL HGCM and GUI threads when completing
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* HGSMI 3D and Video Accel respectively, EMT thread when dealing with
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* HGSMI command processing, etc.
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* Besides settings/cleaning flags atomically, some flags have their
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* own special sync restrictions, see comments for flags above.
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*/
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u32 host_flags;
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u32 reserved[3];
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} __packed;
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#endif
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