![Hans de Goede](/assets/img/avatar_default.png)
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>
143 lines
4.7 KiB
C
143 lines
4.7 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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#include "vbox_drv.h"
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#include "vbox_err.h"
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#include "vboxvideo_guest.h"
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#include "vboxvideo_vbe.h"
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#include "hgsmi_channels.h"
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/**
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* Set a video mode via an HGSMI request. The views must have been
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* initialised first using @a VBoxHGSMISendViewInfo and if the mode is being
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* set on the first display then it must be set first using registers.
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* @param ctx The context containing the heap to use
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* @param display The screen number
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* @param origin_x The horizontal displacement relative to the first scrn
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* @param origin_y The vertical displacement relative to the first screen
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* @param start_offset The offset of the visible area of the framebuffer
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* relative to the framebuffer start
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* @param pitch The offset in bytes between the starts of two adjecent
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* scan lines in video RAM
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* @param width The mode width
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* @param height The mode height
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* @param bpp The colour depth of the mode
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* @param flags Flags
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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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{
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struct vbva_infoscreen *p;
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p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
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VBVA_INFO_SCREEN);
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if (!p)
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return;
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p->view_index = display;
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p->origin_x = origin_x;
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p->origin_y = origin_y;
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p->start_offset = start_offset;
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p->line_size = pitch;
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p->width = width;
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p->height = height;
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p->bits_per_pixel = bpp;
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p->flags = flags;
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hgsmi_buffer_submit(ctx, p);
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hgsmi_buffer_free(ctx, p);
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}
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/**
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* Report the rectangle relative to which absolute pointer events should be
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* expressed. This information remains valid until the next VBVA resize event
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* for any screen, at which time it is reset to the bounding rectangle of all
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* virtual screens.
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* @param ctx The context containing the heap to use.
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* @param origin_x Upper left X co-ordinate relative to the first screen.
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* @param origin_y Upper left Y co-ordinate relative to the first screen.
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* @param width Rectangle width.
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* @param height Rectangle height.
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* @returns 0 on success, -errno on failure
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*/
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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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{
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struct vbva_report_input_mapping *p;
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p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
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VBVA_REPORT_INPUT_MAPPING);
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if (!p)
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return -ENOMEM;
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p->x = origin_x;
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p->y = origin_y;
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p->cx = width;
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p->cy = height;
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hgsmi_buffer_submit(ctx, p);
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hgsmi_buffer_free(ctx, p);
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return 0;
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}
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/**
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* Get most recent video mode hints.
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* @param ctx The context containing the heap to use.
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* @param screens The number of screens to query hints for, starting at 0.
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* @param hints Array of vbva_modehint structures for receiving the hints.
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* @returns 0 on success, -errno on failure
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*/
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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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struct vbva_query_mode_hints *p;
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size_t size;
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if (WARN_ON(!hints))
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return -EINVAL;
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size = screens * sizeof(struct vbva_modehint);
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p = hgsmi_buffer_alloc(ctx, sizeof(*p) + size, HGSMI_CH_VBVA,
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VBVA_QUERY_MODE_HINTS);
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if (!p)
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return -ENOMEM;
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p->hints_queried_count = screens;
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p->hint_structure_guest_size = sizeof(struct vbva_modehint);
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p->rc = VERR_NOT_SUPPORTED;
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hgsmi_buffer_submit(ctx, p);
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if (RT_FAILURE(p->rc)) {
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hgsmi_buffer_free(ctx, p);
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return -EIO;
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}
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memcpy(hints, ((u8 *)p) + sizeof(struct vbva_query_mode_hints), size);
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hgsmi_buffer_free(ctx, p);
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return 0;
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}
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