drm/vboxvideo/vboxvideo.h

1 /* SPDX-License-Identifier: MIT */
2 /* Copyright (C) 2006-2016 Oracle Corporation */
18  *   Last 4096 bytes - Adapter information area.
20  *   Slack - what left after dividing the VRAM.
41  * to disable the mode.
74  * len_and_flags & ~VBVA_F_RECORD_PARTIAL >= VBVA_RING_BUFFER_SIZE -
80 #define VBVA_RING_BUFFER_SIZE        (4194304 - 1024)
146 /* guest->host commands */
165 /* G->H DMA command */
170  * Report the guest virtual desktop position and size for mapping host and
174 /* Report the guest cursor position and query the host position. */
177 /* host->guest commands */
185  * Returns VINF_SUCCESS if the host can report mode hints via VBVA.
190  * Returns VINF_SUCCESS if the host can report guest cursor enabled status via
333 	 * The data consists of 1 bpp AND mask followed by 32 bpp XOR (color)
334 	 * mask.
336 	 * For pointers without alpha channel the XOR mask pixels are 32 bit
337 	 * values: (lsb)BGR0(msb). For pointers with alpha channel the XOR mask
340 	 * Guest driver must create the AND mask for pointers with alpha chan.,
342 	 * a normal color pointer. The AND mask can be constructed from alpha
343 	 * values. For example alpha value >= 0xf0 means bit 0 in the AND mask.
345 	 * The AND mask is 1 bpp bitmap with byte aligned scanlines. Size of AND
346 	 * mask, therefore, is and_len = (width + 7) / 8 * height. The padding
349 	 * The XOR mask follows the AND mask on the next 4 bytes aligned offset:
351 	 * Bytes in the gap between the AND and the XOR mask are undefined.
352 	 * XOR mask scanlines have no gap between them and size of XOR mask is:
409 	u32 dx;			/* X offset into the virtual frame-buffer. */
410 	u32 dy;			/* Y offset into the virtual frame-buffer. */
417  * Report the rectangle relative to which absolute pointer events should be
420  * virtual screens and must be re-set.
423 	s32 x;	/* Upper left X co-ordinate relative to the first screen. */
424 	s32 y;	/* Upper left Y co-ordinate relative to the first screen. */
430  * Report the guest cursor position and query the host one. The host may wish
431  * to use the guest information to re-position its own cursor (though this is