mirror of https://gitee.com/openkylin/linux.git
443 lines
14 KiB
C
443 lines
14 KiB
C
/* SPDX-License-Identifier: MIT */
|
|
/* Copyright (C) 2006-2016 Oracle Corporation */
|
|
|
|
#ifndef __VBOXVIDEO_H__
|
|
#define __VBOXVIDEO_H__
|
|
|
|
#define VBOX_VIDEO_MAX_SCREENS 64
|
|
|
|
/*
|
|
* The last 4096 bytes of the guest VRAM contains the generic info for all
|
|
* DualView chunks: sizes and offsets of chunks. This is filled by miniport.
|
|
*
|
|
* Last 4096 bytes of each chunk contain chunk specific data: framebuffer info,
|
|
* etc. This is used exclusively by the corresponding instance of a display
|
|
* driver.
|
|
*
|
|
* The VRAM layout:
|
|
* Last 4096 bytes - Adapter information area.
|
|
* 4096 bytes aligned miniport heap (value specified in the config rouded up).
|
|
* Slack - what left after dividing the VRAM.
|
|
* 4096 bytes aligned framebuffers:
|
|
* last 4096 bytes of each framebuffer is the display information area.
|
|
*
|
|
* The Virtual Graphics Adapter information in the guest VRAM is stored by the
|
|
* guest video driver using structures prepended by VBOXVIDEOINFOHDR.
|
|
*
|
|
* When the guest driver writes dword 0 to the VBE_DISPI_INDEX_VBOX_VIDEO
|
|
* the host starts to process the info. The first element at the start of
|
|
* the 4096 bytes region should be normally be a LINK that points to
|
|
* actual information chain. That way the guest driver can have some
|
|
* fixed layout of the information memory block and just rewrite
|
|
* the link to point to relevant memory chain.
|
|
*
|
|
* The processing stops at the END element.
|
|
*
|
|
* The host can access the memory only when the port IO is processed.
|
|
* All data that will be needed later must be copied from these 4096 bytes.
|
|
* But other VRAM can be used by host until the mode is disabled.
|
|
*
|
|
* The guest driver writes dword 0xffffffff to the VBE_DISPI_INDEX_VBOX_VIDEO
|
|
* to disable the mode.
|
|
*
|
|
* VBE_DISPI_INDEX_VBOX_VIDEO is used to read the configuration information
|
|
* from the host and issue commands to the host.
|
|
*
|
|
* The guest writes the VBE_DISPI_INDEX_VBOX_VIDEO index register, the the
|
|
* following operations with the VBE data register can be performed:
|
|
*
|
|
* Operation Result
|
|
* write 16 bit value NOP
|
|
* read 16 bit value count of monitors
|
|
* write 32 bit value set the vbox cmd value and the cmd processed by the host
|
|
* read 32 bit value result of the last vbox command is returned
|
|
*/
|
|
|
|
struct vbva_cmd_hdr {
|
|
s16 x;
|
|
s16 y;
|
|
u16 w;
|
|
u16 h;
|
|
} __packed;
|
|
|
|
/*
|
|
* The VBVA ring buffer is suitable for transferring large (< 2GB) amount of
|
|
* data. For example big bitmaps which do not fit to the buffer.
|
|
*
|
|
* Guest starts writing to the buffer by initializing a record entry in the
|
|
* records queue. VBVA_F_RECORD_PARTIAL indicates that the record is being
|
|
* written. As data is written to the ring buffer, the guest increases
|
|
* free_offset.
|
|
*
|
|
* The host reads the records on flushes and processes all completed records.
|
|
* When host encounters situation when only a partial record presents and
|
|
* len_and_flags & ~VBVA_F_RECORD_PARTIAL >= VBVA_RING_BUFFER_SIZE -
|
|
* VBVA_RING_BUFFER_THRESHOLD, the host fetched all record data and updates
|
|
* data_offset. After that on each flush the host continues fetching the data
|
|
* until the record is completed.
|
|
*/
|
|
|
|
#define VBVA_RING_BUFFER_SIZE (4194304 - 1024)
|
|
#define VBVA_RING_BUFFER_THRESHOLD (4096)
|
|
|
|
#define VBVA_MAX_RECORDS (64)
|
|
|
|
#define VBVA_F_MODE_ENABLED 0x00000001u
|
|
#define VBVA_F_MODE_VRDP 0x00000002u
|
|
#define VBVA_F_MODE_VRDP_RESET 0x00000004u
|
|
#define VBVA_F_MODE_VRDP_ORDER_MASK 0x00000008u
|
|
|
|
#define VBVA_F_STATE_PROCESSING 0x00010000u
|
|
|
|
#define VBVA_F_RECORD_PARTIAL 0x80000000u
|
|
|
|
struct vbva_record {
|
|
u32 len_and_flags;
|
|
} __packed;
|
|
|
|
/*
|
|
* The minimum HGSMI heap size is PAGE_SIZE (4096 bytes) and is a restriction of
|
|
* the runtime heapsimple API. Use minimum 2 pages here, because the info area
|
|
* also may contain other data (for example hgsmi_host_flags structure).
|
|
*/
|
|
#define VBVA_ADAPTER_INFORMATION_SIZE 65536
|
|
#define VBVA_MIN_BUFFER_SIZE 65536
|
|
|
|
/* The value for port IO to let the adapter to interpret the adapter memory. */
|
|
#define VBOX_VIDEO_DISABLE_ADAPTER_MEMORY 0xFFFFFFFF
|
|
|
|
/* The value for port IO to let the adapter to interpret the adapter memory. */
|
|
#define VBOX_VIDEO_INTERPRET_ADAPTER_MEMORY 0x00000000
|
|
|
|
/*
|
|
* The value for port IO to let the adapter to interpret the display memory.
|
|
* The display number is encoded in low 16 bits.
|
|
*/
|
|
#define VBOX_VIDEO_INTERPRET_DISPLAY_MEMORY_BASE 0x00010000
|
|
|
|
struct vbva_host_flags {
|
|
u32 host_events;
|
|
u32 supported_orders;
|
|
} __packed;
|
|
|
|
struct vbva_buffer {
|
|
struct vbva_host_flags host_flags;
|
|
|
|
/* The offset where the data start in the buffer. */
|
|
u32 data_offset;
|
|
/* The offset where next data must be placed in the buffer. */
|
|
u32 free_offset;
|
|
|
|
/* The queue of record descriptions. */
|
|
struct vbva_record records[VBVA_MAX_RECORDS];
|
|
u32 record_first_index;
|
|
u32 record_free_index;
|
|
|
|
/* Space to leave free when large partial records are transferred. */
|
|
u32 partial_write_tresh;
|
|
|
|
u32 data_len;
|
|
/* variable size for the rest of the vbva_buffer area in VRAM. */
|
|
u8 data[0];
|
|
} __packed;
|
|
|
|
#define VBVA_MAX_RECORD_SIZE (128 * 1024 * 1024)
|
|
|
|
/* guest->host commands */
|
|
#define VBVA_QUERY_CONF32 1
|
|
#define VBVA_SET_CONF32 2
|
|
#define VBVA_INFO_VIEW 3
|
|
#define VBVA_INFO_HEAP 4
|
|
#define VBVA_FLUSH 5
|
|
#define VBVA_INFO_SCREEN 6
|
|
#define VBVA_ENABLE 7
|
|
#define VBVA_MOUSE_POINTER_SHAPE 8
|
|
/* informs host about HGSMI caps. see vbva_caps below */
|
|
#define VBVA_INFO_CAPS 12
|
|
/* configures scanline, see VBVASCANLINECFG below */
|
|
#define VBVA_SCANLINE_CFG 13
|
|
/* requests scanline info, see VBVASCANLINEINFO below */
|
|
#define VBVA_SCANLINE_INFO 14
|
|
/* inform host about VBVA Command submission */
|
|
#define VBVA_CMDVBVA_SUBMIT 16
|
|
/* inform host about VBVA Command submission */
|
|
#define VBVA_CMDVBVA_FLUSH 17
|
|
/* G->H DMA command */
|
|
#define VBVA_CMDVBVA_CTL 18
|
|
/* Query most recent mode hints sent */
|
|
#define VBVA_QUERY_MODE_HINTS 19
|
|
/*
|
|
* Report the guest virtual desktop position and size for mapping host and
|
|
* guest pointer positions.
|
|
*/
|
|
#define VBVA_REPORT_INPUT_MAPPING 20
|
|
/* Report the guest cursor position and query the host position. */
|
|
#define VBVA_CURSOR_POSITION 21
|
|
|
|
/* host->guest commands */
|
|
#define VBVAHG_EVENT 1
|
|
#define VBVAHG_DISPLAY_CUSTOM 2
|
|
|
|
/* vbva_conf32::index */
|
|
#define VBOX_VBVA_CONF32_MONITOR_COUNT 0
|
|
#define VBOX_VBVA_CONF32_HOST_HEAP_SIZE 1
|
|
/*
|
|
* Returns VINF_SUCCESS if the host can report mode hints via VBVA.
|
|
* Set value to VERR_NOT_SUPPORTED before calling.
|
|
*/
|
|
#define VBOX_VBVA_CONF32_MODE_HINT_REPORTING 2
|
|
/*
|
|
* Returns VINF_SUCCESS if the host can report guest cursor enabled status via
|
|
* VBVA. Set value to VERR_NOT_SUPPORTED before calling.
|
|
*/
|
|
#define VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING 3
|
|
/*
|
|
* Returns the currently available host cursor capabilities. Available if
|
|
* VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING returns success.
|
|
*/
|
|
#define VBOX_VBVA_CONF32_CURSOR_CAPABILITIES 4
|
|
/* Returns the supported flags in vbva_infoscreen.flags. */
|
|
#define VBOX_VBVA_CONF32_SCREEN_FLAGS 5
|
|
/* Returns the max size of VBVA record. */
|
|
#define VBOX_VBVA_CONF32_MAX_RECORD_SIZE 6
|
|
|
|
struct vbva_conf32 {
|
|
u32 index;
|
|
u32 value;
|
|
} __packed;
|
|
|
|
/* Reserved for historical reasons. */
|
|
#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED0 BIT(0)
|
|
/*
|
|
* Guest cursor capability: can the host show a hardware cursor at the host
|
|
* pointer location?
|
|
*/
|
|
#define VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE BIT(1)
|
|
/* Reserved for historical reasons. */
|
|
#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED2 BIT(2)
|
|
/* Reserved for historical reasons. Must always be unset. */
|
|
#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED3 BIT(3)
|
|
/* Reserved for historical reasons. */
|
|
#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED4 BIT(4)
|
|
/* Reserved for historical reasons. */
|
|
#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED5 BIT(5)
|
|
|
|
struct vbva_infoview {
|
|
/* Index of the screen, assigned by the guest. */
|
|
u32 view_index;
|
|
|
|
/* The screen offset in VRAM, the framebuffer starts here. */
|
|
u32 view_offset;
|
|
|
|
/* The size of the VRAM memory that can be used for the view. */
|
|
u32 view_size;
|
|
|
|
/* The recommended maximum size of the VRAM memory for the screen. */
|
|
u32 max_screen_size;
|
|
} __packed;
|
|
|
|
struct vbva_flush {
|
|
u32 reserved;
|
|
} __packed;
|
|
|
|
/* vbva_infoscreen.flags */
|
|
#define VBVA_SCREEN_F_NONE 0x0000
|
|
#define VBVA_SCREEN_F_ACTIVE 0x0001
|
|
/*
|
|
* The virtual monitor has been disabled by the guest and should be removed
|
|
* by the host and ignored for purposes of pointer position calculation.
|
|
*/
|
|
#define VBVA_SCREEN_F_DISABLED 0x0002
|
|
/*
|
|
* The virtual monitor has been blanked by the guest and should be blacked
|
|
* out by the host using width, height, etc values from the vbva_infoscreen
|
|
* request.
|
|
*/
|
|
#define VBVA_SCREEN_F_BLANK 0x0004
|
|
/*
|
|
* The virtual monitor has been blanked by the guest and should be blacked
|
|
* out by the host using the previous mode values for width. height, etc.
|
|
*/
|
|
#define VBVA_SCREEN_F_BLANK2 0x0008
|
|
|
|
struct vbva_infoscreen {
|
|
/* Which view contains the screen. */
|
|
u32 view_index;
|
|
|
|
/* Physical X origin relative to the primary screen. */
|
|
s32 origin_x;
|
|
|
|
/* Physical Y origin relative to the primary screen. */
|
|
s32 origin_y;
|
|
|
|
/* Offset of visible framebuffer relative to the framebuffer start. */
|
|
u32 start_offset;
|
|
|
|
/* The scan line size in bytes. */
|
|
u32 line_size;
|
|
|
|
/* Width of the screen. */
|
|
u32 width;
|
|
|
|
/* Height of the screen. */
|
|
u32 height;
|
|
|
|
/* Color depth. */
|
|
u16 bits_per_pixel;
|
|
|
|
/* VBVA_SCREEN_F_* */
|
|
u16 flags;
|
|
} __packed;
|
|
|
|
/* vbva_enable.flags */
|
|
#define VBVA_F_NONE 0x00000000
|
|
#define VBVA_F_ENABLE 0x00000001
|
|
#define VBVA_F_DISABLE 0x00000002
|
|
/* extended VBVA to be used with WDDM */
|
|
#define VBVA_F_EXTENDED 0x00000004
|
|
/* vbva offset is absolute VRAM offset */
|
|
#define VBVA_F_ABSOFFSET 0x00000008
|
|
|
|
struct vbva_enable {
|
|
u32 flags;
|
|
u32 offset;
|
|
s32 result;
|
|
} __packed;
|
|
|
|
struct vbva_enable_ex {
|
|
struct vbva_enable base;
|
|
u32 screen_id;
|
|
} __packed;
|
|
|
|
struct vbva_mouse_pointer_shape {
|
|
/* The host result. */
|
|
s32 result;
|
|
|
|
/* VBOX_MOUSE_POINTER_* bit flags. */
|
|
u32 flags;
|
|
|
|
/* X coordinate of the hot spot. */
|
|
u32 hot_X;
|
|
|
|
/* Y coordinate of the hot spot. */
|
|
u32 hot_y;
|
|
|
|
/* Width of the pointer in pixels. */
|
|
u32 width;
|
|
|
|
/* Height of the pointer in scanlines. */
|
|
u32 height;
|
|
|
|
/* Pointer data.
|
|
*
|
|
* The data consists of 1 bpp AND mask followed by 32 bpp XOR (color)
|
|
* mask.
|
|
*
|
|
* For pointers without alpha channel the XOR mask pixels are 32 bit
|
|
* values: (lsb)BGR0(msb). For pointers with alpha channel the XOR mask
|
|
* consists of (lsb)BGRA(msb) 32 bit values.
|
|
*
|
|
* Guest driver must create the AND mask for pointers with alpha chan.,
|
|
* so if host does not support alpha, the pointer could be displayed as
|
|
* a normal color pointer. The AND mask can be constructed from alpha
|
|
* values. For example alpha value >= 0xf0 means bit 0 in the AND mask.
|
|
*
|
|
* The AND mask is 1 bpp bitmap with byte aligned scanlines. Size of AND
|
|
* mask, therefore, is and_len = (width + 7) / 8 * height. The padding
|
|
* bits at the end of any scanline are undefined.
|
|
*
|
|
* The XOR mask follows the AND mask on the next 4 bytes aligned offset:
|
|
* u8 *xor = and + (and_len + 3) & ~3
|
|
* Bytes in the gap between the AND and the XOR mask are undefined.
|
|
* XOR mask scanlines have no gap between them and size of XOR mask is:
|
|
* xor_len = width * 4 * height.
|
|
*
|
|
* Preallocate 4 bytes for accessing actual data as p->data.
|
|
*/
|
|
u8 data[4];
|
|
} __packed;
|
|
|
|
/* pointer is visible */
|
|
#define VBOX_MOUSE_POINTER_VISIBLE 0x0001
|
|
/* pointer has alpha channel */
|
|
#define VBOX_MOUSE_POINTER_ALPHA 0x0002
|
|
/* pointerData contains new pointer shape */
|
|
#define VBOX_MOUSE_POINTER_SHAPE 0x0004
|
|
|
|
/*
|
|
* The guest driver can handle asynch guest cmd completion by reading the
|
|
* command offset from io port.
|
|
*/
|
|
#define VBVACAPS_COMPLETEGCMD_BY_IOREAD 0x00000001
|
|
/* the guest driver can handle video adapter IRQs */
|
|
#define VBVACAPS_IRQ 0x00000002
|
|
/* The guest can read video mode hints sent via VBVA. */
|
|
#define VBVACAPS_VIDEO_MODE_HINTS 0x00000004
|
|
/* The guest can switch to a software cursor on demand. */
|
|
#define VBVACAPS_DISABLE_CURSOR_INTEGRATION 0x00000008
|
|
/* The guest does not depend on host handling the VBE registers. */
|
|
#define VBVACAPS_USE_VBVA_ONLY 0x00000010
|
|
|
|
struct vbva_caps {
|
|
s32 rc;
|
|
u32 caps;
|
|
} __packed;
|
|
|
|
/* Query the most recent mode hints received from the host. */
|
|
struct vbva_query_mode_hints {
|
|
/* The maximum number of screens to return hints for. */
|
|
u16 hints_queried_count;
|
|
/* The size of the mode hint structures directly following this one. */
|
|
u16 hint_structure_guest_size;
|
|
/* Return code for the operation. Initialise to VERR_NOT_SUPPORTED. */
|
|
s32 rc;
|
|
} __packed;
|
|
|
|
/*
|
|
* Structure in which a mode hint is returned. The guest allocates an array
|
|
* of these immediately after the vbva_query_mode_hints structure.
|
|
* To accommodate future extensions, the vbva_query_mode_hints structure
|
|
* specifies the size of the vbva_modehint structures allocated by the guest,
|
|
* and the host only fills out structure elements which fit into that size. The
|
|
* host should fill any unused members (e.g. dx, dy) or structure space on the
|
|
* end with ~0. The whole structure can legally be set to ~0 to skip a screen.
|
|
*/
|
|
struct vbva_modehint {
|
|
u32 magic;
|
|
u32 cx;
|
|
u32 cy;
|
|
u32 bpp; /* Which has never been used... */
|
|
u32 display;
|
|
u32 dx; /* X offset into the virtual frame-buffer. */
|
|
u32 dy; /* Y offset into the virtual frame-buffer. */
|
|
u32 enabled; /* Not flags. Add new members for new flags. */
|
|
} __packed;
|
|
|
|
#define VBVAMODEHINT_MAGIC 0x0801add9u
|
|
|
|
/*
|
|
* Report the rectangle relative to which absolute pointer events should be
|
|
* expressed. This information remains valid until the next VBVA resize event
|
|
* for any screen, at which time it is reset to the bounding rectangle of all
|
|
* virtual screens and must be re-set.
|
|
*/
|
|
struct vbva_report_input_mapping {
|
|
s32 x; /* Upper left X co-ordinate relative to the first screen. */
|
|
s32 y; /* Upper left Y co-ordinate relative to the first screen. */
|
|
u32 cx; /* Rectangle width. */
|
|
u32 cy; /* Rectangle height. */
|
|
} __packed;
|
|
|
|
/*
|
|
* Report the guest cursor position and query the host one. The host may wish
|
|
* to use the guest information to re-position its own cursor (though this is
|
|
* currently unlikely).
|
|
*/
|
|
struct vbva_cursor_position {
|
|
u32 report_position; /* Are we reporting a position? */
|
|
u32 x; /* Guest cursor X position */
|
|
u32 y; /* Guest cursor Y position */
|
|
} __packed;
|
|
|
|
#endif
|