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 #ifndef __HGSMI_CH_SETUP_H__ 24 #define __HGSMI_CH_SETUP_H__ 25 26 /* 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. 30 */ 31 #define HGSMI_CC_HOST_FLAGS_LOCATION 0 32 33 struct hgsmi_buffer_location { 34 u32 buf_location; 35 u32 buf_len; 36 } __packed; 37 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 47 /** 48 * Cursor capability state change flag, should be accessed under 49 * VGAState::lock only. @see vbva_conf32. 50 */ 51 #define HGSMIHOSTFLAGS_CURSOR_CAPABILITIES 0x40u 52 53 struct hgsmi_host_flags { 54 /* 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. 61 */ 62 u32 host_flags; 63 u32 reserved[3]; 64 } __packed; 65 66 #endif 67
