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