dd55d44f40
This commit adds the vboxvideo drm/kms driver for the virtual graphics card used in Virtual Box virtual machines to drivers/staging. Why drivers/staging? This driver is already being patched into the kernel by several distros, thus it is good to get this driver upstream soon, so that work on the driver can be easily shared. At the same time we want to take our time to get this driver properly cleaned up (mainly converted to the new atomic modesetting APIs) before submitting it as a normal driver under drivers/gpu/drm, putting this driver in staging for now allows both. Note this driver has already been significantly cleaned up, when I started working on this the files under /usr/src/vboxguest/vboxvideo as installed by Virtual Box 5.1.18 Guest Additions had a total linecount of 52681 lines. The version in this commit has 4874 lines. Cc: vbox-dev@virtualbox.org Cc: Michael Thayer <michael.thayer@oracle.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Michael Thayer <michael.thayer@oracle.com> Acked-by: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
96 lines
3.5 KiB
C
96 lines
3.5 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 __VBOXVIDEO_GUEST_H__
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#define __VBOXVIDEO_GUEST_H__
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#include <linux/genalloc.h>
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#include "vboxvideo.h"
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/**
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* Structure grouping the context needed for sending graphics acceleration
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* information to the host via VBVA. Each screen has its own VBVA buffer.
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*/
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struct vbva_buf_ctx {
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/** Offset of the buffer in the VRAM section for the screen */
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u32 buffer_offset;
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/** Length of the buffer in bytes */
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u32 buffer_length;
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/** Set if we wrote to the buffer faster than the host could read it */
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bool buffer_overflow;
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/** VBVA record that we are currently preparing for the host, or NULL */
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struct vbva_record *record;
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/**
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* Pointer to the VBVA buffer mapped into the current address space.
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* Will be NULL if VBVA is not enabled.
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*/
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struct vbva_buffer *vbva;
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};
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/**
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* @name Base HGSMI APIs
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* @{
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*/
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int hgsmi_report_flags_location(struct gen_pool *ctx, u32 location);
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int hgsmi_send_caps_info(struct gen_pool *ctx, u32 caps);
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int hgsmi_test_query_conf(struct gen_pool *ctx);
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int hgsmi_query_conf(struct gen_pool *ctx, u32 index, u32 *value_ret);
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int hgsmi_update_pointer_shape(struct gen_pool *ctx, u32 flags,
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u32 hot_x, u32 hot_y, u32 width, u32 height,
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u8 *pixels, u32 len);
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int hgsmi_cursor_position(struct gen_pool *ctx, bool report_position,
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u32 x, u32 y, u32 *x_host, u32 *y_host);
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/** @} */
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/**
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* @name VBVA APIs
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* @{
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*/
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bool vbva_enable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
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struct vbva_buffer *vbva, s32 screen);
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void vbva_disable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
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s32 screen);
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bool vbva_buffer_begin_update(struct vbva_buf_ctx *vbva_ctx,
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struct gen_pool *ctx);
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void vbva_buffer_end_update(struct vbva_buf_ctx *vbva_ctx);
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bool vbva_write(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
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const void *p, u32 len);
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void vbva_setup_buffer_context(struct vbva_buf_ctx *vbva_ctx,
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u32 buffer_offset, u32 buffer_length);
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/** @} */
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/**
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* @name Modesetting APIs
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* @{
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*/
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void hgsmi_process_display_info(struct gen_pool *ctx, u32 display,
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s32 origin_x, s32 origin_y, u32 start_offset,
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u32 pitch, u32 width, u32 height,
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u16 bpp, u16 flags);
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int hgsmi_update_input_mapping(struct gen_pool *ctx, s32 origin_x, s32 origin_y,
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u32 width, u32 height);
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int hgsmi_get_mode_hints(struct gen_pool *ctx, unsigned int screens,
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struct vbva_modehint *hints);
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/** @} */
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#endif
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