On Mon, Jun 26, 2017 at 06:06:19PM +0200, Hans de Goede wrote:
> Hi,
>
> On 23-06-17 11:31, Daniel Vetter wrote:
> > On Thu, Jun 22, 2017 at 11:11:37AM +0200, Hans de Goede wrote:
> > > 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@xxxxxxxxxxxxxx
> > > Cc: Michael Thayer <michael.thayer@xxxxxxxxxx>
> > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
> > > Signed-off-by: Michael Thayer <michael.thayer@xxxxxxxxxx>
> > > ---
> > > Changes in v2:
> > > -Add Michael's S-o-b
> > > -Improve Kconfig help text
> > > -Remove .config changes which accidentally got added to the commit
> > >
> > > Changes in v3:
> > > -Convert the files shared with the video-driver for other operating-systems
> > > to kernel coding style too
> > > -Remove unused code from these files
> >
> > In the end it's up to you, but our experience in drm with -staging has
> > been that's both a pain (separate tree, which makes coordination harder
> > for drm drivers) and a ghetto (no one from drm will look at your patches).
> >
> > Especially for small drivers (and this is one, and I expect if you use all
> > the latest and greates helpers atomic will provide it'll shrink
> > considerably) it's just not worth the pain to polish stuff twice.
> >
> > 0toh I see the benefit of putting stuff into staging so in the end it's up
> > to you, just beware pls.
>
> Thanks for the heads up Daniel, for now I would like to move forward with
> getting this in staging, but I do agree that it would be good to get it
> into drivers/gpu soon. Michael do you think you will have some time soon
> to look at moving this to the atomic helpers ?
To make it clear what I think is the minimal path towards drivers/gpu:
- switch to atomic helpers (well probably simple_display_pipe if it fits)
- delete half the driver code by dropping optional hooks and using helpers
- make sure you don't use any callback/functions where the kerneldoc says
it's deprecated (e.g. load/unload)
- merge
We can do the checkpatch/style bikeshedding once merged into drivers/gpu/
imo, that's real good fodder for newbies anyway :-) So get the
fundamentals roughly right, worry about the details once landed. And I'll
try to volunteer you for drm-misc commit rights to make you stick around
...
Cheers, Daniel
>
> Regards,
>
> Hans
>
>
> >
> > Thanks, Daniel
> >
> > > ---
> > > drivers/staging/Kconfig | 2 +
> > > drivers/staging/Makefile | 1 +
> > > drivers/staging/vboxvideo/Kconfig | 12 +
> > > drivers/staging/vboxvideo/Makefile | 7 +
> > > drivers/staging/vboxvideo/TODO | 9 +
> > > drivers/staging/vboxvideo/hgsmi_base.c | 244 ++++++++
> > > drivers/staging/vboxvideo/hgsmi_ch_setup.h | 66 +++
> > > drivers/staging/vboxvideo/hgsmi_channels.h | 53 ++
> > > drivers/staging/vboxvideo/hgsmi_defs.h | 92 +++
> > > drivers/staging/vboxvideo/modesetting.c | 142 +++++
> > > drivers/staging/vboxvideo/vbox_drv.c | 287 +++++++++
> > > drivers/staging/vboxvideo/vbox_drv.h | 299 ++++++++++
> > > drivers/staging/vboxvideo/vbox_err.h | 50 ++
> > > drivers/staging/vboxvideo/vbox_fb.c | 442 ++++++++++++++
> > > drivers/staging/vboxvideo/vbox_hgsmi.c | 115 ++++
> > > drivers/staging/vboxvideo/vbox_irq.c | 207 +++++++
> > > drivers/staging/vboxvideo/vbox_main.c | 528 +++++++++++++++++
> > > drivers/staging/vboxvideo/vbox_mode.c | 864 ++++++++++++++++++++++++++++
> > > drivers/staging/vboxvideo/vbox_prime.c | 74 +++
> > > drivers/staging/vboxvideo/vbox_ttm.c | 477 +++++++++++++++
> > > drivers/staging/vboxvideo/vboxvideo.h | 491 ++++++++++++++++
> > > drivers/staging/vboxvideo/vboxvideo_guest.h | 95 +++
> > > drivers/staging/vboxvideo/vboxvideo_vbe.h | 84 +++
> > > drivers/staging/vboxvideo/vbva_base.c | 233 ++++++++
> > > 24 files changed, 4874 insertions(+)
> > > create mode 100644 drivers/staging/vboxvideo/Kconfig
> > > create mode 100644 drivers/staging/vboxvideo/Makefile
> > > create mode 100644 drivers/staging/vboxvideo/TODO
> > > create mode 100644 drivers/staging/vboxvideo/hgsmi_base.c
> > > create mode 100644 drivers/staging/vboxvideo/hgsmi_ch_setup.h
> > > create mode 100644 drivers/staging/vboxvideo/hgsmi_channels.h
> > > create mode 100644 drivers/staging/vboxvideo/hgsmi_defs.h
> > > create mode 100644 drivers/staging/vboxvideo/modesetting.c
> > > create mode 100644 drivers/staging/vboxvideo/vbox_drv.c
> > > create mode 100644 drivers/staging/vboxvideo/vbox_drv.h
> > > create mode 100644 drivers/staging/vboxvideo/vbox_err.h
> > > create mode 100644 drivers/staging/vboxvideo/vbox_fb.c
> > > create mode 100644 drivers/staging/vboxvideo/vbox_hgsmi.c
> > > create mode 100644 drivers/staging/vboxvideo/vbox_irq.c
> > > create mode 100644 drivers/staging/vboxvideo/vbox_main.c
> > > create mode 100644 drivers/staging/vboxvideo/vbox_mode.c
> > > create mode 100644 drivers/staging/vboxvideo/vbox_prime.c
> > > create mode 100644 drivers/staging/vboxvideo/vbox_ttm.c
> > > create mode 100644 drivers/staging/vboxvideo/vboxvideo.h
> > > create mode 100644 drivers/staging/vboxvideo/vboxvideo_guest.h
> > > create mode 100644 drivers/staging/vboxvideo/vboxvideo_vbe.h
> > > create mode 100644 drivers/staging/vboxvideo/vbva_base.c
> > >
> > > diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
> > > index 268d4e6ef48a..ef28a1cb64ae 100644
> > > --- a/drivers/staging/Kconfig
> > > +++ b/drivers/staging/Kconfig
> > > @@ -110,4 +110,6 @@ source "drivers/staging/ccree/Kconfig"
> > > source "drivers/staging/typec/Kconfig"
> > > +source "drivers/staging/vboxvideo/Kconfig"
> > > +
> > > endif # STAGING
> > > diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
> > > index b93e6f5f0f6e..2918580bdb9e 100644
> > > --- a/drivers/staging/Makefile
> > > +++ b/drivers/staging/Makefile
> > > @@ -44,3 +44,4 @@ obj-$(CONFIG_KS7010) += ks7010/
> > > obj-$(CONFIG_GREYBUS) += greybus/
> > > obj-$(CONFIG_BCM2835_VCHIQ) += vc04_services/
> > > obj-$(CONFIG_CRYPTO_DEV_CCREE) += ccree/
> > > +obj-$(CONFIG_DRM_VBOXVIDEO) += vboxvideo/
> > > diff --git a/drivers/staging/vboxvideo/Kconfig b/drivers/staging/vboxvideo/Kconfig
> > > new file mode 100644
> > > index 000000000000..a52746f9a670
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/Kconfig
> > > @@ -0,0 +1,12 @@
> > > +config DRM_VBOXVIDEO
> > > + tristate "Virtual Box Graphics Card"
> > > + depends on DRM && X86 && PCI
> > > + select DRM_KMS_HELPER
> > > + help
> > > + This is a KMS driver for the virtual Graphics Card used in
> > > + Virtual Box virtual machines.
> > > +
> > > + Although it is possible to builtin this module, it is advised
> > > + to build this driver as a module, so that it can be updated
> > > + independently of the kernel. Select M to built this driver as a
> > > + module and add support for these devices via drm/kms interfaces.
> > > diff --git a/drivers/staging/vboxvideo/Makefile b/drivers/staging/vboxvideo/Makefile
> > > new file mode 100644
> > > index 000000000000..2d0b3bc7ad73
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/Makefile
> > > @@ -0,0 +1,7 @@
> > > +ccflags-y := -Iinclude/drm
> > > +
> > > +vboxvideo-y := hgsmi_base.o modesetting.o vbva_base.o \
> > > + vbox_drv.o vbox_fb.o vbox_hgsmi.o vbox_irq.o vbox_main.o \
> > > + vbox_mode.o vbox_prime.o vbox_ttm.o
> > > +
> > > +obj-$(CONFIG_DRM_VBOXVIDEO) += vboxvideo.o
> > > diff --git a/drivers/staging/vboxvideo/TODO b/drivers/staging/vboxvideo/TODO
> > > new file mode 100644
> > > index 000000000000..ce764309b079
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/TODO
> > > @@ -0,0 +1,9 @@
> > > +TODO:
> > > +-Move the driver over to the atomic API
> > > +-Stop using old load / unload drm_driver hooks
> > > +-Get a full review from the drm-maintainers on dri-devel done on this driver
> > > +-Extend this TODO with the results of that review
> > > +
> > > +Please send any patches to Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>,
> > > +Hans de Goede <hdegoede@xxxxxxxxxx> and
> > > +Michael Thayer <michael.thayer@xxxxxxxxxx>.
> > > diff --git a/drivers/staging/vboxvideo/hgsmi_base.c b/drivers/staging/vboxvideo/hgsmi_base.c
> > > new file mode 100644
> > > index 000000000000..50a0bb8bd99c
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/hgsmi_base.c
> > > @@ -0,0 +1,244 @@
> > > +/*
> > > + * Copyright (C) 2006-2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + */
> > > +
> > > +#include "vbox_drv.h"
> > > +#include "vbox_err.h"
> > > +#include "vboxvideo_guest.h"
> > > +#include "vboxvideo_vbe.h"
> > > +#include "hgsmi_channels.h"
> > > +#include "hgsmi_ch_setup.h"
> > > +
> > > +/**
> > > + * Inform the host of the location of the host flags in VRAM via an HGSMI cmd.
> > > + * @param ctx the context of the guest heap to use.
> > > + * @param location the offset chosen for the flags within guest VRAM.
> > > + * @returns 0 on success, -errno on failure
> > > + */
> > > +int hgsmi_report_flags_location(struct gen_pool *ctx, u32 location)
> > > +{
> > > + struct hgsmi_buffer_location *p;
> > > +
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_HGSMI,
> > > + HGSMI_CC_HOST_FLAGS_LOCATION);
> > > + if (!p)
> > > + return -ENOMEM;
> > > +
> > > + p->buf_location = location;
> > > + p->buf_len = sizeof(struct hgsmi_host_flags);
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > + hgsmi_buffer_free(ctx, p);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +/**
> > > + * Notify the host of HGSMI-related guest capabilities via an HGSMI command.
> > > + * @param ctx the context of the guest heap to use.
> > > + * @param caps the capabilities to report, see vbva_caps.
> > > + * @returns 0 on success, -errno on failure
> > > + */
> > > +int hgsmi_send_caps_info(struct gen_pool *ctx, u32 caps)
> > > +{
> > > + struct vbva_caps *p;
> > > +
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA, VBVA_INFO_CAPS);
> > > + if (!p)
> > > + return -ENOMEM;
> > > +
> > > + p->rc = VERR_NOT_IMPLEMENTED;
> > > + p->caps = caps;
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > +
> > > + WARN_ON_ONCE(RT_FAILURE(p->rc));
> > > +
> > > + hgsmi_buffer_free(ctx, p);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +int hgsmi_test_query_conf(struct gen_pool *ctx)
> > > +{
> > > + u32 value = 0;
> > > + int rc;
> > > +
> > > + rc = hgsmi_query_conf(ctx, U32_MAX, &value);
> > > +
> > > + return (RT_SUCCESS(rc) && value == U32_MAX) ? 0 : -EIO;
> > > +}
> > > +
> > > +/**
> > > + * Query the host for an HGSMI configuration parameter via an HGSMI command.
> > > + * @param ctx the context containing the heap used
> > > + * @param index the index of the parameter to query,
> > > + * @see vbva_conf32::index
> > > + * @param value_ret where to store the value of the parameter on success
> > > + * @returns 0 on success, -errno on failure
> > > + */
> > > +int hgsmi_query_conf(struct gen_pool *ctx, u32 index, u32 *value_ret)
> > > +{
> > > + struct vbva_conf32 *p;
> > > +
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
> > > + VBVA_QUERY_CONF32);
> > > + if (!p)
> > > + return -ENOMEM;
> > > +
> > > + p->index = index;
> > > + p->value = U32_MAX;
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > +
> > > + *value_ret = p->value;
> > > +
> > > + hgsmi_buffer_free(ctx, p);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +/**
> > > + * Pass the host a new mouse pointer shape via an HGSMI command.
> > > + *
> > > + * @param ctx the context containing the heap to be used
> > > + * @param flags cursor flags, @see VMMDevReqMousePointer::flags
> > > + * @param hot_x horizontal position of the hot spot
> > > + * @param hot_y vertical position of the hot spot
> > > + * @param width width in pixels of the cursor
> > > + * @param height height in pixels of the cursor
> > > + * @param pixels pixel data, @see VMMDevReqMousePointer for the format
> > > + * @param len size in bytes of the pixel data
> > > + * @returns 0 on success, -errno on failure
> > > + */
> > > +int hgsmi_update_pointer_shape(struct gen_pool *ctx, u32 flags,
> > > + u32 hot_x, u32 hot_y, u32 width, u32 height,
> > > + u8 *pixels, u32 len)
> > > +{
> > > + struct vbva_mouse_pointer_shape *p;
> > > + u32 pixel_len = 0;
> > > + int rc;
> > > +
> > > + if (flags & VBOX_MOUSE_POINTER_SHAPE) {
> > > + /*
> > > + * Size of the pointer data:
> > > + * sizeof (AND mask) + sizeof (XOR_MASK)
> > > + */
> > > + pixel_len = ((((width + 7) / 8) * height + 3) & ~3) +
> > > + width * 4 * height;
> > > + if (pixel_len > len)
> > > + return -EINVAL;
> > > +
> > > + /*
> > > + * If shape is supplied, then always create the pointer visible.
> > > + * See comments in 'vboxUpdatePointerShape'
> > > + */
> > > + flags |= VBOX_MOUSE_POINTER_VISIBLE;
> > > + }
> > > +
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p) + pixel_len, HGSMI_CH_VBVA,
> > > + VBVA_MOUSE_POINTER_SHAPE);
> > > + if (!p)
> > > + return -ENOMEM;
> > > +
> > > + p->result = VINF_SUCCESS;
> > > + p->flags = flags;
> > > + p->hot_X = hot_x;
> > > + p->hot_y = hot_y;
> > > + p->width = width;
> > > + p->height = height;
> > > + if (pixel_len)
> > > + memcpy(p->data, pixels, pixel_len);
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > +
> > > + switch (p->result) {
> > > + case VINF_SUCCESS:
> > > + rc = 0;
> > > + break;
> > > + case VERR_NO_MEMORY:
> > > + rc = -ENOMEM;
> > > + break;
> > > + case VERR_NOT_SUPPORTED:
> > > + rc = -EBUSY;
> > > + break;
> > > + default:
> > > + rc = -EINVAL;
> > > + }
> > > +
> > > + hgsmi_buffer_free(ctx, p);
> > > +
> > > + return rc;
> > > +}
> > > +
> > > +/**
> > > + * Report the guest cursor position. The host may wish to use this information
> > > + * to re-position its own cursor (though this is currently unlikely). The
> > > + * current host cursor position is returned.
> > > + * @param ctx The context containing the heap used.
> > > + * @param report_position Are we reporting a position?
> > > + * @param x Guest cursor X position.
> > > + * @param y Guest cursor Y position.
> > > + * @param x_host Host cursor X position is stored here. Optional.
> > > + * @param y_host Host cursor Y position is stored here. Optional.
> > > + * @returns 0 on success, -errno on failure
> > > + */
> > > +int hgsmi_cursor_position(struct gen_pool *ctx, bool report_position,
> > > + u32 x, u32 y, u32 *x_host, u32 *y_host)
> > > +{
> > > + struct vbva_cursor_position *p;
> > > +
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
> > > + VBVA_CURSOR_POSITION);
> > > + if (!p)
> > > + return -ENOMEM;
> > > +
> > > + p->report_position = !!report_position;
> > > + p->x = x;
> > > + p->y = y;
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > +
> > > + *x_host = p->x;
> > > + *y_host = p->y;
> > > +
> > > + hgsmi_buffer_free(ctx, p);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +/**
> > > + * @todo Mouse pointer position to be read from VMMDev memory, address of the
> > > + * memory region can be queried from VMMDev via an IOCTL. This VMMDev memory
> > > + * region will contain host information which is needed by the guest.
> > > + *
> > > + * Reading will not cause a switch to the host.
> > > + *
> > > + * Have to take into account:
> > > + * * synchronization: host must write to the memory only from EMT,
> > > + * large structures must be read under flag, which tells the host
> > > + * that the guest is currently reading the memory (OWNER flag?).
> > > + * * guest writes: may be allocate a page for the host info and make
> > > + * the page readonly for the guest.
> > > + * * the information should be available only for additions drivers.
> > > + * * VMMDev additions driver will inform the host which version of the info
> > > + * it expects, host must support all versions.
> > > + */
> > > diff --git a/drivers/staging/vboxvideo/hgsmi_ch_setup.h b/drivers/staging/vboxvideo/hgsmi_ch_setup.h
> > > new file mode 100644
> > > index 000000000000..8e6d9e11a69c
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/hgsmi_ch_setup.h
> > > @@ -0,0 +1,66 @@
> > > +/*
> > > + * Copyright (C) 2006-2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + */
> > > +
> > > +#ifndef __HGSMI_CH_SETUP_H__
> > > +#define __HGSMI_CH_SETUP_H__
> > > +
> > > +/*
> > > + * Tell the host the location of hgsmi_host_flags structure, where the host
> > > + * can write information about pending buffers, etc, and which can be quickly
> > > + * polled by the guest without a need to port IO.
> > > + */
> > > +#define HGSMI_CC_HOST_FLAGS_LOCATION 0
> > > +
> > > +struct hgsmi_buffer_location {
> > > + u32 buf_location;
> > > + u32 buf_len;
> > > +} __packed;
> > > +
> > > +/* HGSMI setup and configuration data structures. */
> > > +/* host->guest commands pending, should be accessed under FIFO lock only */
> > > +#define HGSMIHOSTFLAGS_COMMANDS_PENDING 0x01u
> > > +/* IRQ is fired, should be accessed under VGAState::lock only */
> > > +#define HGSMIHOSTFLAGS_IRQ 0x02u
> > > +/* vsync interrupt flag, should be accessed under VGAState::lock only */
> > > +#define HGSMIHOSTFLAGS_VSYNC 0x10u
> > > +/** monitor hotplug flag, should be accessed under VGAState::lock only */
> > > +#define HGSMIHOSTFLAGS_HOTPLUG 0x20u
> > > +/**
> > > + * Cursor capability state change flag, should be accessed under
> > > + * VGAState::lock only. @see vbva_conf32.
> > > + */
> > > +#define HGSMIHOSTFLAGS_CURSOR_CAPABILITIES 0x40u
> > > +
> > > +struct hgsmi_host_flags {
> > > + /*
> > > + * Host flags can be accessed and modified in multiple threads
> > > + * concurrently, e.g. CrOpenGL HGCM and GUI threads when completing
> > > + * HGSMI 3D and Video Accel respectively, EMT thread when dealing with
> > > + * HGSMI command processing, etc.
> > > + * Besides settings/cleaning flags atomically, some flags have their
> > > + * own special sync restrictions, see comments for flags above.
> > > + */
> > > + u32 host_flags;
> > > + u32 reserved[3];
> > > +} __packed;
> > > +
> > > +#endif
> > > diff --git a/drivers/staging/vboxvideo/hgsmi_channels.h b/drivers/staging/vboxvideo/hgsmi_channels.h
> > > new file mode 100644
> > > index 000000000000..a2a34b2167b4
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/hgsmi_channels.h
> > > @@ -0,0 +1,53 @@
> > > +/*
> > > + * Copyright (C) 2006-2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + */
> > > +
> > > +#ifndef __HGSMI_CHANNELS_H__
> > > +#define __HGSMI_CHANNELS_H__
> > > +
> > > +/*
> > > + * Each channel has an 8 bit identifier. There are a number of predefined
> > > + * (hardcoded) channels.
> > > + *
> > > + * HGSMI_CH_HGSMI channel can be used to map a string channel identifier
> > > + * to a free 16 bit numerical value. values are allocated in range
> > > + * [HGSMI_CH_STRING_FIRST;HGSMI_CH_STRING_LAST].
> > > + */
> > > +
> > > +/* A reserved channel value */
> > > +#define HGSMI_CH_RESERVED 0x00
> > > +/* HGCMI: setup and configuration */
> > > +#define HGSMI_CH_HGSMI 0x01
> > > +/* Graphics: VBVA */
> > > +#define HGSMI_CH_VBVA 0x02
> > > +/* Graphics: Seamless with a single guest region */
> > > +#define HGSMI_CH_SEAMLESS 0x03
> > > +/* Graphics: Seamless with separate host windows */
> > > +#define HGSMI_CH_SEAMLESS2 0x04
> > > +/* Graphics: OpenGL HW acceleration */
> > > +#define HGSMI_CH_OPENGL 0x05
> > > +
> > > +/* The first channel index to be used for string mappings (inclusive) */
> > > +#define HGSMI_CH_STRING_FIRST 0x20
> > > +/* The last channel index for string mappings (inclusive) */
> > > +#define HGSMI_CH_STRING_LAST 0xff
> > > +
> > > +#endif
> > > diff --git a/drivers/staging/vboxvideo/hgsmi_defs.h b/drivers/staging/vboxvideo/hgsmi_defs.h
> > > new file mode 100644
> > > index 000000000000..5b21fb974d20
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/hgsmi_defs.h
> > > @@ -0,0 +1,92 @@
> > > +/*
> > > + * Copyright (C) 2006-2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + */
> > > +
> > > +#ifndef __HGSMI_DEFS_H__
> > > +#define __HGSMI_DEFS_H__
> > > +
> > > +/* Buffer sequence type mask. */
> > > +#define HGSMI_BUFFER_HEADER_F_SEQ_MASK 0x03
> > > +/* Single buffer, not a part of a sequence. */
> > > +#define HGSMI_BUFFER_HEADER_F_SEQ_SINGLE 0x00
> > > +/* The first buffer in a sequence. */
> > > +#define HGSMI_BUFFER_HEADER_F_SEQ_START 0x01
> > > +/* A middle buffer in a sequence. */
> > > +#define HGSMI_BUFFER_HEADER_F_SEQ_CONTINUE 0x02
> > > +/* The last buffer in a sequence. */
> > > +#define HGSMI_BUFFER_HEADER_F_SEQ_END 0x03
> > > +
> > > +/* 16 bytes buffer header. */
> > > +struct hgsmi_buffer_header {
> > > + u32 data_size; /* Size of data that follows the header. */
> > > + u8 flags; /* HGSMI_BUFFER_HEADER_F_* */
> > > + u8 channel; /* The channel the data must be routed to. */
> > > + u16 channel_info; /* Opaque to the HGSMI, used by the channel. */
> > > +
> > > + union {
> > > + /* Opaque placeholder to make the union 8 bytes. */
> > > + u8 header_data[8];
> > > +
> > > + /* HGSMI_BUFFER_HEADER_F_SEQ_SINGLE */
> > > + struct {
> > > + u32 reserved1; /* A reserved field, initialize to 0. */
> > > + u32 reserved2; /* A reserved field, initialize to 0. */
> > > + } buffer;
> > > +
> > > + /* HGSMI_BUFFER_HEADER_F_SEQ_START */
> > > + struct {
> > > + /* Must be the same for all buffers in the sequence. */
> > > + u32 sequence_number;
> > > + /* The total size of the sequence. */
> > > + u32 sequence_size;
> > > + } sequence_start;
> > > +
> > > + /*
> > > + * HGSMI_BUFFER_HEADER_F_SEQ_CONTINUE and
> > > + * HGSMI_BUFFER_HEADER_F_SEQ_END
> > > + */
> > > + struct {
> > > + /* Must be the same for all buffers in the sequence. */
> > > + u32 sequence_number;
> > > + /* Data offset in the entire sequence. */
> > > + u32 sequence_offset;
> > > + } sequence_continue;
> > > + } u;
> > > +} __packed;
> > > +
> > > +/* 8 bytes buffer tail. */
> > > +struct hgsmi_buffer_tail {
> > > + /* Reserved, must be initialized to 0. */
> > > + u32 reserved;
> > > + /*
> > > + * One-at-a-Time Hash: http://www.burtleburtle.net/bob/hash/doobs.html
> > > + * Over the header, offset and for first 4 bytes of the tail.
> > > + */
> > > + u32 checksum;
> > > +} __packed;
> > > +
> > > +/*
> > > + * The size of the array of channels. Array indexes are u8.
> > > + * Note: the value must not be changed.
> > > + */
> > > +#define HGSMI_NUMBER_OF_CHANNELS 0x100
> > > +
> > > +#endif
> > > diff --git a/drivers/staging/vboxvideo/modesetting.c b/drivers/staging/vboxvideo/modesetting.c
> > > new file mode 100644
> > > index 000000000000..7616b8aab23a
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/modesetting.c
> > > @@ -0,0 +1,142 @@
> > > +/*
> > > + * Copyright (C) 2006-2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + */
> > > +
> > > +#include "vbox_drv.h"
> > > +#include "vbox_err.h"
> > > +#include "vboxvideo_guest.h"
> > > +#include "vboxvideo_vbe.h"
> > > +#include "hgsmi_channels.h"
> > > +
> > > +/**
> > > + * Set a video mode via an HGSMI request. The views must have been
> > > + * initialised first using @a VBoxHGSMISendViewInfo and if the mode is being
> > > + * set on the first display then it must be set first using registers.
> > > + * @param ctx The context containing the heap to use
> > > + * @param display The screen number
> > > + * @param origin_x The horizontal displacement relative to the first scrn
> > > + * @param origin_y The vertical displacement relative to the first screen
> > > + * @param start_offset The offset of the visible area of the framebuffer
> > > + * relative to the framebuffer start
> > > + * @param pitch The offset in bytes between the starts of two adjecent
> > > + * scan lines in video RAM
> > > + * @param width The mode width
> > > + * @param height The mode height
> > > + * @param bpp The colour depth of the mode
> > > + * @param flags Flags
> > > + */
> > > +void hgsmi_process_display_info(struct gen_pool *ctx, u32 display,
> > > + s32 origin_x, s32 origin_y, u32 start_offset,
> > > + u32 pitch, u32 width, u32 height,
> > > + u16 bpp, u16 flags)
> > > +{
> > > + struct vbva_infoscreen *p;
> > > +
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
> > > + VBVA_INFO_SCREEN);
> > > + if (!p)
> > > + return;
> > > +
> > > + p->view_index = display;
> > > + p->origin_x = origin_x;
> > > + p->origin_y = origin_y;
> > > + p->start_offset = start_offset;
> > > + p->line_size = pitch;
> > > + p->width = width;
> > > + p->height = height;
> > > + p->bits_per_pixel = bpp;
> > > + p->flags = flags;
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > + hgsmi_buffer_free(ctx, p);
> > > +}
> > > +
> > > +/**
> > > + * 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.
> > > + * @param ctx The context containing the heap to use.
> > > + * @param origin_x Upper left X co-ordinate relative to the first screen.
> > > + * @param origin_y Upper left Y co-ordinate relative to the first screen.
> > > + * @param width Rectangle width.
> > > + * @param height Rectangle height.
> > > + * @returns 0 on success, -errno on failure
> > > + */
> > > +int hgsmi_update_input_mapping(struct gen_pool *ctx, s32 origin_x, s32 origin_y,
> > > + u32 width, u32 height)
> > > +{
> > > + struct vbva_report_input_mapping *p;
> > > +
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
> > > + VBVA_REPORT_INPUT_MAPPING);
> > > + if (!p)
> > > + return -ENOMEM;
> > > +
> > > + p->x = origin_x;
> > > + p->y = origin_y;
> > > + p->cx = width;
> > > + p->cy = height;
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > + hgsmi_buffer_free(ctx, p);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +/**
> > > + * Get most recent video mode hints.
> > > + * @param ctx The context containing the heap to use.
> > > + * @param screens The number of screens to query hints for, starting at 0.
> > > + * @param hints Array of vbva_modehint structures for receiving the hints.
> > > + * @returns 0 on success, -errno on failure
> > > + */
> > > +int hgsmi_get_mode_hints(struct gen_pool *ctx, unsigned int screens,
> > > + struct vbva_modehint *hints)
> > > +{
> > > + struct vbva_query_mode_hints *p;
> > > + size_t size;
> > > +
> > > + if (WARN_ON(!hints))
> > > + return -EINVAL;
> > > +
> > > + size = screens * sizeof(struct vbva_modehint);
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p) + size, HGSMI_CH_VBVA,
> > > + VBVA_QUERY_MODE_HINTS);
> > > + if (!p)
> > > + return -ENOMEM;
> > > +
> > > + p->hints_queried_count = screens;
> > > + p->hint_structure_guest_size = sizeof(struct vbva_modehint);
> > > + p->rc = VERR_NOT_SUPPORTED;
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > +
> > > + if (RT_FAILURE(p->rc)) {
> > > + hgsmi_buffer_free(ctx, p);
> > > + return -EIO;
> > > + }
> > > +
> > > + memcpy(hints, ((u8 *)p) + sizeof(struct vbva_query_mode_hints), size);
> > > + hgsmi_buffer_free(ctx, p);
> > > +
> > > + return 0;
> > > +}
> > > diff --git a/drivers/staging/vboxvideo/vbox_drv.c b/drivers/staging/vboxvideo/vbox_drv.c
> > > new file mode 100644
> > > index 000000000000..05c973db77a4
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_drv.c
> > > @@ -0,0 +1,287 @@
> > > +/*
> > > + * Copyright (C) 2013-2017 Oracle Corporation
> > > + * This file is based on ast_drv.c
> > > + * Copyright 2012 Red Hat Inc.
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the
> > > + * "Software"), to deal in the Software without restriction, including
> > > + * without limitation the rights to use, copy, modify, merge, publish,
> > > + * distribute, sub license, and/or sell copies of the Software, and to
> > > + * permit persons to whom the Software is furnished to do so, subject to
> > > + * the following conditions:
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
> > > + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > > + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
> > > + * USE OR OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * The above copyright notice and this permission notice (including the
> > > + * next paragraph) shall be included in all copies or substantial portions
> > > + * of the Software.
> > > + *
> > > + * Authors: Dave Airlie <airlied@xxxxxxxxxx>
> > > + * Michael Thayer <michael.thayer@xxxxxxxxxx,
> > > + * Hans de Goede <hdegoede@xxxxxxxxxx>
> > > + */
> > > +#include <linux/module.h>
> > > +#include <linux/console.h>
> > > +#include <linux/vt_kern.h>
> > > +
> > > +#include <drm/drmP.h>
> > > +#include <drm/drm_crtc_helper.h>
> > > +
> > > +#include "vbox_drv.h"
> > > +
> > > +int vbox_modeset = -1;
> > > +
> > > +MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
> > > +module_param_named(modeset, vbox_modeset, int, 0400);
> > > +
> > > +static struct drm_driver driver;
> > > +
> > > +static const struct pci_device_id pciidlist[] = {
> > > + { 0x80ee, 0xbeef, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
> > > + { 0, 0, 0},
> > > +};
> > > +MODULE_DEVICE_TABLE(pci, pciidlist);
> > > +
> > > +static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> > > +{
> > > + return drm_get_pci_dev(pdev, ent, &driver);
> > > +}
> > > +
> > > +static void vbox_pci_remove(struct pci_dev *pdev)
> > > +{
> > > + struct drm_device *dev = pci_get_drvdata(pdev);
> > > +
> > > + drm_put_dev(dev);
> > > +}
> > > +
> > > +static int vbox_drm_freeze(struct drm_device *dev)
> > > +{
> > > + drm_kms_helper_poll_disable(dev);
> > > +
> > > + pci_save_state(dev->pdev);
> > > +
> > > + console_lock();
> > > + vbox_fbdev_set_suspend(dev, 1);
> > > + console_unlock();
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static int vbox_drm_thaw(struct drm_device *dev)
> > > +{
> > > + drm_mode_config_reset(dev);
> > > + drm_helper_resume_force_mode(dev);
> > > +
> > > + console_lock();
> > > + vbox_fbdev_set_suspend(dev, 0);
> > > + console_unlock();
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static int vbox_drm_resume(struct drm_device *dev)
> > > +{
> > > + int ret;
> > > +
> > > + if (pci_enable_device(dev->pdev))
> > > + return -EIO;
> > > +
> > > + ret = vbox_drm_thaw(dev);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + drm_kms_helper_poll_enable(dev);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static int vbox_pm_suspend(struct device *dev)
> > > +{
> > > + struct pci_dev *pdev = to_pci_dev(dev);
> > > + struct drm_device *ddev = pci_get_drvdata(pdev);
> > > + int error;
> > > +
> > > + error = vbox_drm_freeze(ddev);
> > > + if (error)
> > > + return error;
> > > +
> > > + pci_disable_device(pdev);
> > > + pci_set_power_state(pdev, PCI_D3hot);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static int vbox_pm_resume(struct device *dev)
> > > +{
> > > + struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
> > > +
> > > + return vbox_drm_resume(ddev);
> > > +}
> > > +
> > > +static int vbox_pm_freeze(struct device *dev)
> > > +{
> > > + struct pci_dev *pdev = to_pci_dev(dev);
> > > + struct drm_device *ddev = pci_get_drvdata(pdev);
> > > +
> > > + if (!ddev || !ddev->dev_private)
> > > + return -ENODEV;
> > > +
> > > + return vbox_drm_freeze(ddev);
> > > +}
> > > +
> > > +static int vbox_pm_thaw(struct device *dev)
> > > +{
> > > + struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
> > > +
> > > + return vbox_drm_thaw(ddev);
> > > +}
> > > +
> > > +static int vbox_pm_poweroff(struct device *dev)
> > > +{
> > > + struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
> > > +
> > > + return vbox_drm_freeze(ddev);
> > > +}
> > > +
> > > +static const struct dev_pm_ops vbox_pm_ops = {
> > > + .suspend = vbox_pm_suspend,
> > > + .resume = vbox_pm_resume,
> > > + .freeze = vbox_pm_freeze,
> > > + .thaw = vbox_pm_thaw,
> > > + .poweroff = vbox_pm_poweroff,
> > > + .restore = vbox_pm_resume,
> > > +};
> > > +
> > > +static struct pci_driver vbox_pci_driver = {
> > > + .name = DRIVER_NAME,
> > > + .id_table = pciidlist,
> > > + .probe = vbox_pci_probe,
> > > + .remove = vbox_pci_remove,
> > > + .driver.pm = &vbox_pm_ops,
> > > +};
> > > +
> > > +static const struct file_operations vbox_fops = {
> > > + .owner = THIS_MODULE,
> > > + .open = drm_open,
> > > + .release = drm_release,
> > > + .unlocked_ioctl = drm_ioctl,
> > > + .mmap = vbox_mmap,
> > > + .poll = drm_poll,
> > > +#ifdef CONFIG_COMPAT
> > > + .compat_ioctl = drm_compat_ioctl,
> > > +#endif
> > > + .read = drm_read,
> > > +};
> > > +
> > > +static int vbox_master_set(struct drm_device *dev,
> > > + struct drm_file *file_priv, bool from_open)
> > > +{
> > > + struct vbox_private *vbox = dev->dev_private;
> > > +
> > > + /*
> > > + * We do not yet know whether the new owner can handle hotplug, so we
> > > + * do not advertise dynamic modes on the first query and send a
> > > + * tentative hotplug notification after that to see if they query again.
> > > + */
> > > + vbox->initial_mode_queried = false;
> > > +
> > > + mutex_lock(&vbox->hw_mutex);
> > > + /*
> > > + * Disable VBVA when someone releases master in case the next person
> > > + * tries tries to do VESA.
> > > + */
> > > + /** @todo work out if anyone is likely to and whether it will work. */
> > > + /*
> > > + * Update: we also disable it because if the new master does not do
> > > + * dirty rectangle reporting (e.g. old versions of Plymouth) then at
> > > + * least the first screen will still be updated. We enable it as soon
> > > + * as we receive a dirty rectangle report.
> > > + */
> > > + vbox_disable_accel(vbox);
> > > + mutex_unlock(&vbox->hw_mutex);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static void vbox_master_drop(struct drm_device *dev, struct drm_file *file_priv)
> > > +{
> > > + struct vbox_private *vbox = dev->dev_private;
> > > +
> > > + /* See vbox_master_set() */
> > > + vbox->initial_mode_queried = false;
> > > +
> > > + mutex_lock(&vbox->hw_mutex);
> > > + vbox_disable_accel(vbox);
> > > + mutex_unlock(&vbox->hw_mutex);
> > > +}
> > > +
> > > +static struct drm_driver driver = {
> > > + .driver_features =
> > > + DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
> > > + DRIVER_PRIME,
> > > + .dev_priv_size = 0,
> > > +
> > > + .load = vbox_driver_load,
> > > + .unload = vbox_driver_unload,
> > > + .lastclose = vbox_driver_lastclose,
> > > + .master_set = vbox_master_set,
> > > + .master_drop = vbox_master_drop,
> > > + .set_busid = drm_pci_set_busid,
> > > +
> > > + .fops = &vbox_fops,
> > > + .irq_handler = vbox_irq_handler,
> > > + .name = DRIVER_NAME,
> > > + .desc = DRIVER_DESC,
> > > + .date = DRIVER_DATE,
> > > + .major = DRIVER_MAJOR,
> > > + .minor = DRIVER_MINOR,
> > > + .patchlevel = DRIVER_PATCHLEVEL,
> > > +
> > > + .gem_free_object = vbox_gem_free_object,
> > > + .dumb_create = vbox_dumb_create,
> > > + .dumb_map_offset = vbox_dumb_mmap_offset,
> > > + .dumb_destroy = drm_gem_dumb_destroy,
> > > + .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
> > > + .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
> > > + .gem_prime_export = drm_gem_prime_export,
> > > + .gem_prime_import = drm_gem_prime_import,
> > > + .gem_prime_pin = vbox_gem_prime_pin,
> > > + .gem_prime_unpin = vbox_gem_prime_unpin,
> > > + .gem_prime_get_sg_table = vbox_gem_prime_get_sg_table,
> > > + .gem_prime_import_sg_table = vbox_gem_prime_import_sg_table,
> > > + .gem_prime_vmap = vbox_gem_prime_vmap,
> > > + .gem_prime_vunmap = vbox_gem_prime_vunmap,
> > > + .gem_prime_mmap = vbox_gem_prime_mmap,
> > > +};
> > > +
> > > +static int __init vbox_init(void)
> > > +{
> > > +#ifdef CONFIG_VGA_CONSOLE
> > > + if (vgacon_text_force() && vbox_modeset == -1)
> > > + return -EINVAL;
> > > +#endif
> > > +
> > > + if (vbox_modeset == 0)
> > > + return -EINVAL;
> > > +
> > > + return drm_pci_init(&driver, &vbox_pci_driver);
> > > +}
> > > +
> > > +static void __exit vbox_exit(void)
> > > +{
> > > + drm_pci_exit(&driver, &vbox_pci_driver);
> > > +}
> > > +
> > > +module_init(vbox_init);
> > > +module_exit(vbox_exit);
> > > +
> > > +MODULE_AUTHOR("Oracle Corporation");
> > > +MODULE_DESCRIPTION(DRIVER_DESC);
> > > +MODULE_LICENSE("GPL and additional rights");
> > > diff --git a/drivers/staging/vboxvideo/vbox_drv.h b/drivers/staging/vboxvideo/vbox_drv.h
> > > new file mode 100644
> > > index 000000000000..d63d8a9e2c18
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_drv.h
> > > @@ -0,0 +1,299 @@
> > > +/*
> > > + * Copyright (C) 2013-2017 Oracle Corporation
> > > + * This file is based on ast_drv.h
> > > + * Copyright 2012 Red Hat Inc.
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the
> > > + * "Software"), to deal in the Software without restriction, including
> > > + * without limitation the rights to use, copy, modify, merge, publish,
> > > + * distribute, sub license, and/or sell copies of the Software, and to
> > > + * permit persons to whom the Software is furnished to do so, subject to
> > > + * the following conditions:
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
> > > + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > > + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
> > > + * USE OR OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * The above copyright notice and this permission notice (including the
> > > + * next paragraph) shall be included in all copies or substantial portions
> > > + * of the Software.
> > > + *
> > > + * Authors: Dave Airlie <airlied@xxxxxxxxxx>
> > > + * Michael Thayer <michael.thayer@xxxxxxxxxx,
> > > + * Hans de Goede <hdegoede@xxxxxxxxxx>
> > > + */
> > > +#ifndef __VBOX_DRV_H__
> > > +#define __VBOX_DRV_H__
> > > +
> > > +#include <linux/genalloc.h>
> > > +#include <linux/io.h>
> > > +#include <linux/string.h>
> > > +#include <linux/version.h>
> > > +
> > > +#include <drm/drmP.h>
> > > +#include <drm/drm_encoder.h>
> > > +#include <drm/drm_fb_helper.h>
> > > +#include <drm/drm_gem.h>
> > > +
> > > +#include <drm/ttm/ttm_bo_api.h>
> > > +#include <drm/ttm/ttm_bo_driver.h>
> > > +#include <drm/ttm/ttm_placement.h>
> > > +#include <drm/ttm/ttm_memory.h>
> > > +#include <drm/ttm/ttm_module.h>
> > > +
> > > +#include "vboxvideo_guest.h"
> > > +#include "vboxvideo_vbe.h"
> > > +#include "hgsmi_ch_setup.h"
> > > +
> > > +#define DRIVER_NAME "vboxvideo"
> > > +#define DRIVER_DESC "Oracle VM VirtualBox Graphics Card"
> > > +#define DRIVER_DATE "20130823"
> > > +
> > > +#define DRIVER_MAJOR 1
> > > +#define DRIVER_MINOR 0
> > > +#define DRIVER_PATCHLEVEL 0
> > > +
> > > +#define VBOX_MAX_CURSOR_WIDTH 64
> > > +#define VBOX_MAX_CURSOR_HEIGHT 64
> > > +#define CURSOR_PIXEL_COUNT (VBOX_MAX_CURSOR_WIDTH * VBOX_MAX_CURSOR_HEIGHT)
> > > +#define CURSOR_DATA_SIZE (CURSOR_PIXEL_COUNT * 4 + CURSOR_PIXEL_COUNT / 8)
> > > +
> > > +#define VBOX_MAX_SCREENS 32
> > > +
> > > +#define GUEST_HEAP_OFFSET(vbox) ((vbox)->full_vram_size - \
> > > + VBVA_ADAPTER_INFORMATION_SIZE)
> > > +#define GUEST_HEAP_SIZE VBVA_ADAPTER_INFORMATION_SIZE
> > > +#define GUEST_HEAP_USABLE_SIZE (VBVA_ADAPTER_INFORMATION_SIZE - \
> > > + sizeof(struct hgsmi_host_flags))
> > > +#define HOST_FLAGS_OFFSET GUEST_HEAP_USABLE_SIZE
> > > +
> > > +struct vbox_fbdev;
> > > +
> > > +struct vbox_private {
> > > + struct drm_device *dev;
> > > +
> > > + u8 __iomem *guest_heap;
> > > + u8 __iomem *vbva_buffers;
> > > + struct gen_pool *guest_pool;
> > > + struct vbva_buf_ctx *vbva_info;
> > > + bool any_pitch;
> > > + u32 num_crtcs;
> > > + /** Amount of available VRAM, including space used for buffers. */
> > > + u32 full_vram_size;
> > > + /** Amount of available VRAM, not including space used for buffers. */
> > > + u32 available_vram_size;
> > > + /** Array of structures for receiving mode hints. */
> > > + struct vbva_modehint *last_mode_hints;
> > > +
> > > + struct vbox_fbdev *fbdev;
> > > +
> > > + int fb_mtrr;
> > > +
> > > + struct {
> > > + struct drm_global_reference mem_global_ref;
> > > + struct ttm_bo_global_ref bo_global_ref;
> > > + struct ttm_bo_device bdev;
> > > + bool mm_initialised;
> > > + } ttm;
> > > +
> > > + struct mutex hw_mutex; /* protects modeset and accel/vbva accesses */
> > > + bool isr_installed;
> > > + /**
> > > + * We decide whether or not user-space supports display hot-plug
> > > + * depending on whether they react to a hot-plug event after the initial
> > > + * mode query.
> > > + */
> > > + bool initial_mode_queried;
> > > + struct work_struct hotplug_work;
> > > + u32 input_mapping_width;
> > > + u32 input_mapping_height;
> > > + /**
> > > + * Is user-space using an X.Org-style layout of one large frame-buffer
> > > + * encompassing all screen ones or is the fbdev console active?
> > > + */
> > > + bool single_framebuffer;
> > > + u32 cursor_width;
> > > + u32 cursor_height;
> > > + u32 cursor_hot_x;
> > > + u32 cursor_hot_y;
> > > + size_t cursor_data_size;
> > > + u8 cursor_data[CURSOR_DATA_SIZE];
> > > +};
> > > +
> > > +#undef CURSOR_PIXEL_COUNT
> > > +#undef CURSOR_DATA_SIZE
> > > +
> > > +int vbox_driver_load(struct drm_device *dev, unsigned long flags);
> > > +void vbox_driver_unload(struct drm_device *dev);
> > > +void vbox_driver_lastclose(struct drm_device *dev);
> > > +
> > > +struct vbox_gem_object;
> > > +
> > > +struct vbox_connector {
> > > + struct drm_connector base;
> > > + char name[32];
> > > + struct vbox_crtc *vbox_crtc;
> > > + struct {
> > > + u16 width;
> > > + u16 height;
> > > + bool disconnected;
> > > + } mode_hint;
> > > +};
> > > +
> > > +struct vbox_crtc {
> > > + struct drm_crtc base;
> > > + bool blanked;
> > > + bool disconnected;
> > > + unsigned int crtc_id;
> > > + u32 fb_offset;
> > > + bool cursor_enabled;
> > > + u16 x_hint;
> > > + u16 y_hint;
> > > +};
> > > +
> > > +struct vbox_encoder {
> > > + struct drm_encoder base;
> > > +};
> > > +
> > > +struct vbox_framebuffer {
> > > + struct drm_framebuffer base;
> > > + struct drm_gem_object *obj;
> > > +};
> > > +
> > > +struct vbox_fbdev {
> > > + struct drm_fb_helper helper;
> > > + struct vbox_framebuffer afb;
> > > + int size;
> > > + struct ttm_bo_kmap_obj mapping;
> > > + int x1, y1, x2, y2; /* dirty rect */
> > > + spinlock_t dirty_lock;
> > > +};
> > > +
> > > +#define to_vbox_crtc(x) container_of(x, struct vbox_crtc, base)
> > > +#define to_vbox_connector(x) container_of(x, struct vbox_connector, base)
> > > +#define to_vbox_encoder(x) container_of(x, struct vbox_encoder, base)
> > > +#define to_vbox_framebuffer(x) container_of(x, struct vbox_framebuffer, base)
> > > +
> > > +int vbox_mode_init(struct drm_device *dev);
> > > +void vbox_mode_fini(struct drm_device *dev);
> > > +
> > > +#define DRM_MODE_FB_CMD drm_mode_fb_cmd2
> > > +#define CRTC_FB(crtc) ((crtc)->primary->fb)
> > > +
> > > +void vbox_enable_accel(struct vbox_private *vbox);
> > > +void vbox_disable_accel(struct vbox_private *vbox);
> > > +void vbox_report_caps(struct vbox_private *vbox);
> > > +
> > > +void vbox_framebuffer_dirty_rectangles(struct drm_framebuffer *fb,
> > > + struct drm_clip_rect *rects,
> > > + unsigned int num_rects);
> > > +
> > > +int vbox_framebuffer_init(struct drm_device *dev,
> > > + struct vbox_framebuffer *vbox_fb,
> > > + const struct DRM_MODE_FB_CMD *mode_cmd,
> > > + struct drm_gem_object *obj);
> > > +
> > > +int vbox_fbdev_init(struct drm_device *dev);
> > > +void vbox_fbdev_fini(struct drm_device *dev);
> > > +void vbox_fbdev_set_suspend(struct drm_device *dev, int state);
> > > +void vbox_fbdev_set_base(struct vbox_private *vbox, unsigned long gpu_addr);
> > > +
> > > +struct vbox_bo {
> > > + struct ttm_buffer_object bo;
> > > + struct ttm_placement placement;
> > > + struct ttm_bo_kmap_obj kmap;
> > > + struct drm_gem_object gem;
> > > + struct ttm_place placements[3];
> > > + int pin_count;
> > > +};
> > > +
> > > +#define gem_to_vbox_bo(gobj) container_of((gobj), struct vbox_bo, gem)
> > > +
> > > +static inline struct vbox_bo *vbox_bo(struct ttm_buffer_object *bo)
> > > +{
> > > + return container_of(bo, struct vbox_bo, bo);
> > > +}
> > > +
> > > +#define to_vbox_obj(x) container_of(x, struct vbox_gem_object, base)
> > > +
> > > +int vbox_dumb_create(struct drm_file *file,
> > > + struct drm_device *dev,
> > > + struct drm_mode_create_dumb *args);
> > > +
> > > +void vbox_gem_free_object(struct drm_gem_object *obj);
> > > +int vbox_dumb_mmap_offset(struct drm_file *file,
> > > + struct drm_device *dev,
> > > + u32 handle, u64 *offset);
> > > +
> > > +#define DRM_FILE_PAGE_OFFSET (0x10000000ULL >> PAGE_SHIFT)
> > > +
> > > +int vbox_mm_init(struct vbox_private *vbox);
> > > +void vbox_mm_fini(struct vbox_private *vbox);
> > > +
> > > +int vbox_bo_create(struct drm_device *dev, int size, int align,
> > > + u32 flags, struct vbox_bo **pvboxbo);
> > > +
> > > +int vbox_gem_create(struct drm_device *dev,
> > > + u32 size, bool iskernel, struct drm_gem_object **obj);
> > > +
> > > +int vbox_bo_pin(struct vbox_bo *bo, u32 pl_flag, u64 *gpu_addr);
> > > +int vbox_bo_unpin(struct vbox_bo *bo);
> > > +
> > > +static inline int vbox_bo_reserve(struct vbox_bo *bo, bool no_wait)
> > > +{
> > > + int ret;
> > > +
> > > + ret = ttm_bo_reserve(&bo->bo, true, no_wait, NULL);
> > > + if (ret) {
> > > + if (ret != -ERESTARTSYS && ret != -EBUSY)
> > > + DRM_ERROR("reserve failed %p\n", bo);
> > > + return ret;
> > > + }
> > > + return 0;
> > > +}
> > > +
> > > +static inline void vbox_bo_unreserve(struct vbox_bo *bo)
> > > +{
> > > + ttm_bo_unreserve(&bo->bo);
> > > +}
> > > +
> > > +void vbox_ttm_placement(struct vbox_bo *bo, int domain);
> > > +int vbox_bo_push_sysram(struct vbox_bo *bo);
> > > +int vbox_mmap(struct file *filp, struct vm_area_struct *vma);
> > > +
> > > +/* vbox_prime.c */
> > > +int vbox_gem_prime_pin(struct drm_gem_object *obj);
> > > +void vbox_gem_prime_unpin(struct drm_gem_object *obj);
> > > +struct sg_table *vbox_gem_prime_get_sg_table(struct drm_gem_object *obj);
> > > +struct drm_gem_object *vbox_gem_prime_import_sg_table(
> > > + struct drm_device *dev, struct dma_buf_attachment *attach,
> > > + struct sg_table *table);
> > > +void *vbox_gem_prime_vmap(struct drm_gem_object *obj);
> > > +void vbox_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
> > > +int vbox_gem_prime_mmap(struct drm_gem_object *obj,
> > > + struct vm_area_struct *area);
> > > +
> > > +/* vbox_irq.c */
> > > +int vbox_irq_init(struct vbox_private *vbox);
> > > +void vbox_irq_fini(struct vbox_private *vbox);
> > > +void vbox_report_hotplug(struct vbox_private *vbox);
> > > +irqreturn_t vbox_irq_handler(int irq, void *arg);
> > > +
> > > +/* vbox_hgsmi.c */
> > > +void *hgsmi_buffer_alloc(struct gen_pool *guest_pool, size_t size,
> > > + u8 channel, u16 channel_info);
> > > +void hgsmi_buffer_free(struct gen_pool *guest_pool, void *buf);
> > > +int hgsmi_buffer_submit(struct gen_pool *guest_pool, void *buf);
> > > +
> > > +static inline void vbox_write_ioport(u16 index, u16 data)
> > > +{
> > > + outw(index, VBE_DISPI_IOPORT_INDEX);
> > > + outw(data, VBE_DISPI_IOPORT_DATA);
> > > +}
> > > +
> > > +#endif
> > > diff --git a/drivers/staging/vboxvideo/vbox_err.h b/drivers/staging/vboxvideo/vbox_err.h
> > > new file mode 100644
> > > index 000000000000..562db8630eb0
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_err.h
> > > @@ -0,0 +1,50 @@
> > > +/*
> > > + * Copyright (C) 2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + */
> > > +
> > > +#ifndef __VBOX_ERR_H__
> > > +#define __VBOX_ERR_H__
> > > +
> > > +/**
> > > + * @name VirtualBox virtual-hardware error macros
> > > + * @{
> > > + */
> > > +
> > > +#define VINF_SUCCESS 0
> > > +#define VERR_INVALID_PARAMETER (-2)
> > > +#define VERR_INVALID_POINTER (-6)
> > > +#define VERR_NO_MEMORY (-8)
> > > +#define VERR_NOT_IMPLEMENTED (-12)
> > > +#define VERR_INVALID_FUNCTION (-36)
> > > +#define VERR_NOT_SUPPORTED (-37)
> > > +#define VERR_TOO_MUCH_DATA (-42)
> > > +#define VERR_INVALID_STATE (-79)
> > > +#define VERR_OUT_OF_RESOURCES (-80)
> > > +#define VERR_ALREADY_EXISTS (-105)
> > > +#define VERR_INTERNAL_ERROR (-225)
> > > +
> > > +#define RT_SUCCESS_NP(rc) ((int)(rc) >= VINF_SUCCESS)
> > > +#define RT_SUCCESS(rc) (likely(RT_SUCCESS_NP(rc)))
> > > +#define RT_FAILURE(rc) (unlikely(!RT_SUCCESS_NP(rc)))
> > > +
> > > +/** @} */
> > > +
> > > +#endif
> > > diff --git a/drivers/staging/vboxvideo/vbox_fb.c b/drivers/staging/vboxvideo/vbox_fb.c
> > > new file mode 100644
> > > index 000000000000..b5658aad0c21
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_fb.c
> > > @@ -0,0 +1,442 @@
> > > +/*
> > > + * Copyright (C) 2013-2017 Oracle Corporation
> > > + * This file is based on ast_fb.c
> > > + * Copyright 2012 Red Hat Inc.
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the
> > > + * "Software"), to deal in the Software without restriction, including
> > > + * without limitation the rights to use, copy, modify, merge, publish,
> > > + * distribute, sub license, and/or sell copies of the Software, and to
> > > + * permit persons to whom the Software is furnished to do so, subject to
> > > + * the following conditions:
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
> > > + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > > + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
> > > + * USE OR OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * The above copyright notice and this permission notice (including the
> > > + * next paragraph) shall be included in all copies or substantial portions
> > > + * of the Software.
> > > + *
> > > + * Authors: Dave Airlie <airlied@xxxxxxxxxx>
> > > + * Michael Thayer <michael.thayer@xxxxxxxxxx,
> > > + */
> > > +#include <linux/module.h>
> > > +#include <linux/kernel.h>
> > > +#include <linux/errno.h>
> > > +#include <linux/string.h>
> > > +#include <linux/mm.h>
> > > +#include <linux/tty.h>
> > > +#include <linux/sysrq.h>
> > > +#include <linux/delay.h>
> > > +#include <linux/fb.h>
> > > +#include <linux/init.h>
> > > +
> > > +#include <drm/drmP.h>
> > > +#include <drm/drm_crtc.h>
> > > +#include <drm/drm_fb_helper.h>
> > > +#include <drm/drm_crtc_helper.h>
> > > +
> > > +#include "vbox_drv.h"
> > > +#include "vboxvideo.h"
> > > +
> > > +#define VBOX_DIRTY_DELAY (HZ / 30)
> > > +/**
> > > + * Tell the host about dirty rectangles to update.
> > > + */
> > > +static void vbox_dirty_update(struct vbox_fbdev *fbdev,
> > > + int x, int y, int width, int height)
> > > +{
> > > + struct drm_gem_object *obj;
> > > + struct vbox_bo *bo;
> > > + int ret = -EBUSY;
> > > + bool store_for_later = false;
> > > + int x2, y2;
> > > + unsigned long flags;
> > > + struct drm_clip_rect rect;
> > > +
> > > + obj = fbdev->afb.obj;
> > > + bo = gem_to_vbox_bo(obj);
> > > +
> > > + /*
> > > + * try and reserve the BO, if we fail with busy
> > > + * then the BO is being moved and we should
> > > + * store up the damage until later.
> > > + */
> > > + if (drm_can_sleep())
> > > + ret = vbox_bo_reserve(bo, true);
> > > + if (ret) {
> > > + if (ret != -EBUSY)
> > > + return;
> > > +
> > > + store_for_later = true;
> > > + }
> > > +
> > > + x2 = x + width - 1;
> > > + y2 = y + height - 1;
> > > + spin_lock_irqsave(&fbdev->dirty_lock, flags);
> > > +
> > > + if (fbdev->y1 < y)
> > > + y = fbdev->y1;
> > > + if (fbdev->y2 > y2)
> > > + y2 = fbdev->y2;
> > > + if (fbdev->x1 < x)
> > > + x = fbdev->x1;
> > > + if (fbdev->x2 > x2)
> > > + x2 = fbdev->x2;
> > > +
> > > + if (store_for_later) {
> > > + fbdev->x1 = x;
> > > + fbdev->x2 = x2;
> > > + fbdev->y1 = y;
> > > + fbdev->y2 = y2;
> > > + spin_unlock_irqrestore(&fbdev->dirty_lock, flags);
> > > + return;
> > > + }
> > > +
> > > + fbdev->x1 = INT_MAX;
> > > + fbdev->y1 = INT_MAX;
> > > + fbdev->x2 = 0;
> > > + fbdev->y2 = 0;
> > > +
> > > + spin_unlock_irqrestore(&fbdev->dirty_lock, flags);
> > > +
> > > + /*
> > > + * Not sure why the original code subtracted 1 here, but I will keep
> > > + * it that way to avoid unnecessary differences.
> > > + */
> > > + rect.x1 = x;
> > > + rect.x2 = x2 + 1;
> > > + rect.y1 = y;
> > > + rect.y2 = y2 + 1;
> > > + vbox_framebuffer_dirty_rectangles(&fbdev->afb.base, &rect, 1);
> > > +
> > > + vbox_bo_unreserve(bo);
> > > +}
> > > +
> > > +#ifdef CONFIG_FB_DEFERRED_IO
> > > +static void vbox_deferred_io(struct fb_info *info, struct list_head *pagelist)
> > > +{
> > > + struct vbox_fbdev *fbdev = info->par;
> > > + unsigned long start, end, min, max;
> > > + struct page *page;
> > > + int y1, y2;
> > > +
> > > + min = ULONG_MAX;
> > > + max = 0;
> > > + list_for_each_entry(page, pagelist, lru) {
> > > + start = page->index << PAGE_SHIFT;
> > > + end = start + PAGE_SIZE - 1;
> > > + min = min(min, start);
> > > + max = max(max, end);
> > > + }
> > > +
> > > + if (min < max) {
> > > + y1 = min / info->fix.line_length;
> > > + y2 = (max / info->fix.line_length) + 1;
> > > + DRM_INFO("%s: Calling dirty update: 0, %d, %d, %d\n",
> > > + __func__, y1, info->var.xres, y2 - y1 - 1);
> > > + vbox_dirty_update(fbdev, 0, y1, info->var.xres, y2 - y1 - 1);
> > > + }
> > > +}
> > > +
> > > +static struct fb_deferred_io vbox_defio = {
> > > + .delay = VBOX_DIRTY_DELAY,
> > > + .deferred_io = vbox_deferred_io,
> > > +};
> > > +#endif
> > > +
> > > +static void vbox_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
> > > +{
> > > + struct vbox_fbdev *fbdev = info->par;
> > > +
> > > + sys_fillrect(info, rect);
> > > + vbox_dirty_update(fbdev, rect->dx, rect->dy, rect->width, rect->height);
> > > +}
> > > +
> > > +static void vbox_copyarea(struct fb_info *info, const struct fb_copyarea *area)
> > > +{
> > > + struct vbox_fbdev *fbdev = info->par;
> > > +
> > > + sys_copyarea(info, area);
> > > + vbox_dirty_update(fbdev, area->dx, area->dy, area->width, area->height);
> > > +}
> > > +
> > > +static void vbox_imageblit(struct fb_info *info, const struct fb_image *image)
> > > +{
> > > + struct vbox_fbdev *fbdev = info->par;
> > > +
> > > + sys_imageblit(info, image);
> > > + vbox_dirty_update(fbdev, image->dx, image->dy, image->width,
> > > + image->height);
> > > +}
> > > +
> > > +static struct fb_ops vboxfb_ops = {
> > > + .owner = THIS_MODULE,
> > > + .fb_check_var = drm_fb_helper_check_var,
> > > + .fb_set_par = drm_fb_helper_set_par,
> > > + .fb_fillrect = vbox_fillrect,
> > > + .fb_copyarea = vbox_copyarea,
> > > + .fb_imageblit = vbox_imageblit,
> > > + .fb_pan_display = drm_fb_helper_pan_display,
> > > + .fb_blank = drm_fb_helper_blank,
> > > + .fb_setcmap = drm_fb_helper_setcmap,
> > > + .fb_debug_enter = drm_fb_helper_debug_enter,
> > > + .fb_debug_leave = drm_fb_helper_debug_leave,
> > > +};
> > > +
> > > +static int vboxfb_create_object(struct vbox_fbdev *fbdev,
> > > + struct DRM_MODE_FB_CMD *mode_cmd,
> > > + struct drm_gem_object **gobj_p)
> > > +{
> > > + struct drm_device *dev = fbdev->helper.dev;
> > > + u32 size;
> > > + struct drm_gem_object *gobj;
> > > + u32 pitch = mode_cmd->pitches[0];
> > > + int ret = 0;
> > > +
> > > + size = pitch * mode_cmd->height;
> > > + ret = vbox_gem_create(dev, size, true, &gobj);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + *gobj_p = gobj;
> > > + return ret;
> > > +}
> > > +
> > > +static int vboxfb_create(struct drm_fb_helper *helper,
> > > + struct drm_fb_helper_surface_size *sizes)
> > > +{
> > > + struct vbox_fbdev *fbdev =
> > > + container_of(helper, struct vbox_fbdev, helper);
> > > + struct drm_device *dev = fbdev->helper.dev;
> > > + struct DRM_MODE_FB_CMD mode_cmd;
> > > + struct drm_framebuffer *fb;
> > > + struct fb_info *info;
> > > + struct device *device = &dev->pdev->dev;
> > > + struct drm_gem_object *gobj = NULL;
> > > + struct vbox_bo *bo = NULL;
> > > + int size, ret;
> > > + u32 pitch;
> > > +
> > > + mode_cmd.width = sizes->surface_width;
> > > + mode_cmd.height = sizes->surface_height;
> > > + pitch = mode_cmd.width * ((sizes->surface_bpp + 7) / 8);
> > > + mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
> > > + sizes->surface_depth);
> > > + mode_cmd.pitches[0] = pitch;
> > > +
> > > + size = pitch * mode_cmd.height;
> > > +
> > > + ret = vboxfb_create_object(fbdev, &mode_cmd, &gobj);
> > > + if (ret) {
> > > + DRM_ERROR("failed to create fbcon backing object %d\n", ret);
> > > + return ret;
> > > + }
> > > +
> > > + ret = vbox_framebuffer_init(dev, &fbdev->afb, &mode_cmd, gobj);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + bo = gem_to_vbox_bo(gobj);
> > > +
> > > + ret = vbox_bo_reserve(bo, false);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL);
> > > + if (ret) {
> > > + vbox_bo_unreserve(bo);
> > > + return ret;
> > > + }
> > > +
> > > + ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
> > > + vbox_bo_unreserve(bo);
> > > + if (ret) {
> > > + DRM_ERROR("failed to kmap fbcon\n");
> > > + return ret;
> > > + }
> > > +
> > > + info = framebuffer_alloc(0, device);
> > > + if (!info)
> > > + return -ENOMEM;
> > > + info->par = fbdev;
> > > +
> > > + fbdev->size = size;
> > > +
> > > + fb = &fbdev->afb.base;
> > > + fbdev->helper.fb = fb;
> > > + fbdev->helper.fbdev = info;
> > > +
> > > + strcpy(info->fix.id, "vboxdrmfb");
> > > +
> > > + /*
> > > + * The last flag forces a mode set on VT switches even if the kernel
> > > + * does not think it is needed.
> > > + */
> > > + info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT |
> > > + FBINFO_MISC_ALWAYS_SETPAR;
> > > + info->fbops = &vboxfb_ops;
> > > +
> > > + ret = fb_alloc_cmap(&info->cmap, 256, 0);
> > > + if (ret)
> > > + return -ENOMEM;
> > > +
> > > + /*
> > > + * This seems to be done for safety checking that the framebuffer
> > > + * is not registered twice by different drivers.
> > > + */
> > > + info->apertures = alloc_apertures(1);
> > > + if (!info->apertures)
> > > + return -ENOMEM;
> > > + info->apertures->ranges[0].base = pci_resource_start(dev->pdev, 0);
> > > + info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
> > > +
> > > + drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
> > > + drm_fb_helper_fill_var(info, &fbdev->helper, sizes->fb_width,
> > > + sizes->fb_height);
> > > +
> > > + info->screen_base = bo->kmap.virtual;
> > > + info->screen_size = size;
> > > +
> > > +#ifdef CONFIG_FB_DEFERRED_IO
> > > + info->fbdefio = &vbox_defio;
> > > + fb_deferred_io_init(info);
> > > +#endif
> > > +
> > > + info->pixmap.flags = FB_PIXMAP_SYSTEM;
> > > +
> > > + DRM_DEBUG_KMS("allocated %dx%d\n", fb->width, fb->height);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static void vbox_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
> > > + u16 blue, int regno)
> > > +{
> > > +}
> > > +
> > > +static void vbox_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
> > > + u16 *blue, int regno)
> > > +{
> > > + *red = regno;
> > > + *green = regno;
> > > + *blue = regno;
> > > +}
> > > +
> > > +static struct drm_fb_helper_funcs vbox_fb_helper_funcs = {
> > > + .gamma_set = vbox_fb_gamma_set,
> > > + .gamma_get = vbox_fb_gamma_get,
> > > + .fb_probe = vboxfb_create,
> > > +};
> > > +
> > > +static void vbox_fbdev_destroy(struct drm_device *dev, struct vbox_fbdev *fbdev)
> > > +{
> > > + struct fb_info *info;
> > > + struct vbox_framebuffer *afb = &fbdev->afb;
> > > +
> > > + if (fbdev->helper.fbdev) {
> > > + info = fbdev->helper.fbdev;
> > > + unregister_framebuffer(info);
> > > + if (info->cmap.len)
> > > + fb_dealloc_cmap(&info->cmap);
> > > + framebuffer_release(info);
> > > + }
> > > +
> > > + if (afb->obj) {
> > > + struct vbox_bo *bo = gem_to_vbox_bo(afb->obj);
> > > +
> > > + if (!vbox_bo_reserve(bo, false)) {
> > > + if (bo->kmap.virtual)
> > > + ttm_bo_kunmap(&bo->kmap);
> > > + /*
> > > + * QXL does this, but is it really needed before
> > > + * freeing?
> > > + */
> > > + if (bo->pin_count)
> > > + vbox_bo_unpin(bo);
> > > + vbox_bo_unreserve(bo);
> > > + }
> > > + drm_gem_object_unreference_unlocked(afb->obj);
> > > + afb->obj = NULL;
> > > + }
> > > + drm_fb_helper_fini(&fbdev->helper);
> > > +
> > > + drm_framebuffer_unregister_private(&afb->base);
> > > + drm_framebuffer_cleanup(&afb->base);
> > > +}
> > > +
> > > +int vbox_fbdev_init(struct drm_device *dev)
> > > +{
> > > + struct vbox_private *vbox = dev->dev_private;
> > > + struct vbox_fbdev *fbdev;
> > > + int ret;
> > > +
> > > + fbdev = kzalloc(sizeof(*fbdev), GFP_KERNEL);
> > > + if (!fbdev)
> > > + return -ENOMEM;
> > > +
> > > + vbox->fbdev = fbdev;
> > > + spin_lock_init(&fbdev->dirty_lock);
> > > +
> > > + drm_fb_helper_prepare(dev, &fbdev->helper, &vbox_fb_helper_funcs);
> > > + ret = drm_fb_helper_init(dev, &fbdev->helper, vbox->num_crtcs);
> > > + if (ret)
> > > + goto free;
> > > +
> > > + ret = drm_fb_helper_single_add_all_connectors(&fbdev->helper);
> > > + if (ret)
> > > + goto fini;
> > > +
> > > + /* disable all the possible outputs/crtcs before entering KMS mode */
> > > + drm_helper_disable_unused_functions(dev);
> > > +
> > > + ret = drm_fb_helper_initial_config(&fbdev->helper, 32);
> > > + if (ret)
> > > + goto fini;
> > > +
> > > + return 0;
> > > +
> > > +fini:
> > > + drm_fb_helper_fini(&fbdev->helper);
> > > +free:
> > > + kfree(fbdev);
> > > + vbox->fbdev = NULL;
> > > +
> > > + return ret;
> > > +}
> > > +
> > > +void vbox_fbdev_fini(struct drm_device *dev)
> > > +{
> > > + struct vbox_private *vbox = dev->dev_private;
> > > +
> > > + if (!vbox->fbdev)
> > > + return;
> > > +
> > > + vbox_fbdev_destroy(dev, vbox->fbdev);
> > > + kfree(vbox->fbdev);
> > > + vbox->fbdev = NULL;
> > > +}
> > > +
> > > +void vbox_fbdev_set_suspend(struct drm_device *dev, int state)
> > > +{
> > > + struct vbox_private *vbox = dev->dev_private;
> > > +
> > > + if (!vbox->fbdev)
> > > + return;
> > > +
> > > + fb_set_suspend(vbox->fbdev->helper.fbdev, state);
> > > +}
> > > +
> > > +void vbox_fbdev_set_base(struct vbox_private *vbox, unsigned long gpu_addr)
> > > +{
> > > + vbox->fbdev->helper.fbdev->fix.smem_start =
> > > + vbox->fbdev->helper.fbdev->apertures->ranges[0].base + gpu_addr;
> > > + vbox->fbdev->helper.fbdev->fix.smem_len =
> > > + vbox->available_vram_size - gpu_addr;
> > > +}
> > > diff --git a/drivers/staging/vboxvideo/vbox_hgsmi.c b/drivers/staging/vboxvideo/vbox_hgsmi.c
> > > new file mode 100644
> > > index 000000000000..822fd31121cb
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_hgsmi.c
> > > @@ -0,0 +1,115 @@
> > > +/*
> > > + * Copyright (C) 2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the
> > > + * "Software"), to deal in the Software without restriction, including
> > > + * without limitation the rights to use, copy, modify, merge, publish,
> > > + * distribute, sub license, and/or sell copies of the Software, and to
> > > + * permit persons to whom the Software is furnished to do so, subject to
> > > + * the following conditions:
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
> > > + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > > + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
> > > + * USE OR OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * The above copyright notice and this permission notice (including the
> > > + * next paragraph) shall be included in all copies or substantial portions
> > > + * of the Software.
> > > + *
> > > + * Authors: Hans de Goede <hdegoede@xxxxxxxxxx>
> > > + */
> > > +
> > > +#include "vbox_drv.h"
> > > +#include "vboxvideo_vbe.h"
> > > +#include "hgsmi_defs.h"
> > > +
> > > +/* One-at-a-Time Hash from http://www.burtleburtle.net/bob/hash/doobs.html */
> > > +static u32 hgsmi_hash_process(u32 hash, const u8 *data, int size)
> > > +{
> > > + while (size--) {
> > > + hash += *data++;
> > > + hash += (hash << 10);
> > > + hash ^= (hash >> 6);
> > > + }
> > > +
> > > + return hash;
> > > +}
> > > +
> > > +static u32 hgsmi_hash_end(u32 hash)
> > > +{
> > > + hash += (hash << 3);
> > > + hash ^= (hash >> 11);
> > > + hash += (hash << 15);
> > > +
> > > + return hash;
> > > +}
> > > +
> > > +/* Not really a checksum but that is the naming used in all vbox code */
> > > +static u32 hgsmi_checksum(u32 offset,
> > > + const struct hgsmi_buffer_header *header,
> > > + const struct hgsmi_buffer_tail *tail)
> > > +{
> > > + u32 checksum;
> > > +
> > > + checksum = hgsmi_hash_process(0, (u8 *)&offset, sizeof(offset));
> > > + checksum = hgsmi_hash_process(checksum, (u8 *)header, sizeof(*header));
> > > + /* 4 -> Do not checksum the checksum itself */
> > > + checksum = hgsmi_hash_process(checksum, (u8 *)tail, 4);
> > > +
> > > + return hgsmi_hash_end(checksum);
> > > +}
> > > +
> > > +void *hgsmi_buffer_alloc(struct gen_pool *guest_pool, size_t size,
> > > + u8 channel, u16 channel_info)
> > > +{
> > > + struct hgsmi_buffer_header *h;
> > > + struct hgsmi_buffer_tail *t;
> > > + size_t total_size;
> > > + dma_addr_t offset;
> > > +
> > > + total_size = size + sizeof(*h) + sizeof(*t);
> > > + h = gen_pool_dma_alloc(guest_pool, total_size, &offset);
> > > + if (!h)
> > > + return NULL;
> > > +
> > > + t = (struct hgsmi_buffer_tail *)((u8 *)h + sizeof(*h) + size);
> > > +
> > > + h->flags = HGSMI_BUFFER_HEADER_F_SEQ_SINGLE;
> > > + h->data_size = size;
> > > + h->channel = channel;
> > > + h->channel_info = channel_info;
> > > + memset(&h->u.header_data, 0, sizeof(h->u.header_data));
> > > +
> > > + t->reserved = 0;
> > > + t->checksum = hgsmi_checksum(offset, h, t);
> > > +
> > > + return (u8 *)h + sizeof(*h);
> > > +}
> > > +
> > > +void hgsmi_buffer_free(struct gen_pool *guest_pool, void *buf)
> > > +{
> > > + struct hgsmi_buffer_header *h =
> > > + (struct hgsmi_buffer_header *)((u8 *)buf - sizeof(*h));
> > > + size_t total_size = h->data_size + sizeof(*h) +
> > > + sizeof(struct hgsmi_buffer_tail);
> > > +
> > > + gen_pool_free(guest_pool, (unsigned long)h, total_size);
> > > +}
> > > +
> > > +int hgsmi_buffer_submit(struct gen_pool *guest_pool, void *buf)
> > > +{
> > > + phys_addr_t offset;
> > > +
> > > + offset = gen_pool_virt_to_phys(guest_pool, (unsigned long)buf -
> > > + sizeof(struct hgsmi_buffer_header));
> > > + outl(offset, VGA_PORT_HGSMI_GUEST);
> > > + /* Make the compiler aware that the host has changed memory. */
> > > + mb();
> > > +
> > > + return 0;
> > > +}
> > > diff --git a/drivers/staging/vboxvideo/vbox_irq.c b/drivers/staging/vboxvideo/vbox_irq.c
> > > new file mode 100644
> > > index 000000000000..951c2e315bf8
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_irq.c
> > > @@ -0,0 +1,207 @@
> > > +/*
> > > + * Copyright (C) 2016-2017 Oracle Corporation
> > > + * This file is based on qxl_irq.c
> > > + * Copyright 2013 Red Hat Inc.
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * Authors: Dave Airlie
> > > + * Alon Levy
> > > + * Michael Thayer <michael.thayer@xxxxxxxxxx,
> > > + * Hans de Goede <hdegoede@xxxxxxxxxx>
> > > + */
> > > +
> > > +#include <drm/drm_crtc_helper.h>
> > > +
> > > +#include "vbox_drv.h"
> > > +#include "vboxvideo.h"
> > > +
> > > +static void vbox_clear_irq(void)
> > > +{
> > > + outl((u32)~0, VGA_PORT_HGSMI_HOST);
> > > +}
> > > +
> > > +static u32 vbox_get_flags(struct vbox_private *vbox)
> > > +{
> > > + return readl(vbox->guest_heap + HOST_FLAGS_OFFSET);
> > > +}
> > > +
> > > +void vbox_report_hotplug(struct vbox_private *vbox)
> > > +{
> > > + schedule_work(&vbox->hotplug_work);
> > > +}
> > > +
> > > +irqreturn_t vbox_irq_handler(int irq, void *arg)
> > > +{
> > > + struct drm_device *dev = (struct drm_device *)arg;
> > > + struct vbox_private *vbox = (struct vbox_private *)dev->dev_private;
> > > + u32 host_flags = vbox_get_flags(vbox);
> > > +
> > > + if (!(host_flags & HGSMIHOSTFLAGS_IRQ))
> > > + return IRQ_NONE;
> > > +
> > > + /*
> > > + * Due to a bug in the initial host implementation of hot-plug irqs,
> > > + * the hot-plug and cursor capability flags were never cleared.
> > > + * Fortunately we can tell when they would have been set by checking
> > > + * that the VSYNC flag is not set.
> > > + */
> > > + if (host_flags &
> > > + (HGSMIHOSTFLAGS_HOTPLUG | HGSMIHOSTFLAGS_CURSOR_CAPABILITIES) &&
> > > + !(host_flags & HGSMIHOSTFLAGS_VSYNC))
> > > + vbox_report_hotplug(vbox);
> > > +
> > > + vbox_clear_irq();
> > > +
> > > + return IRQ_HANDLED;
> > > +}
> > > +
> > > +/**
> > > + * Check that the position hints provided by the host are suitable for GNOME
> > > + * shell (i.e. all screens disjoint and hints for all enabled screens) and if
> > > + * not replace them with default ones. Providing valid hints improves the
> > > + * chances that we will get a known screen layout for pointer mapping.
> > > + */
> > > +static void validate_or_set_position_hints(struct vbox_private *vbox)
> > > +{
> > > + struct vbva_modehint *hintsi, *hintsj;
> > > + bool valid = true;
> > > + u16 currentx = 0;
> > > + int i, j;
> > > +
> > > + for (i = 0; i < vbox->num_crtcs; ++i) {
> > > + for (j = 0; j < i; ++j) {
> > > + hintsi = &vbox->last_mode_hints[i];
> > > + hintsj = &vbox->last_mode_hints[j];
> > > +
> > > + if (hintsi->enabled && hintsj->enabled) {
> > > + if (hintsi->dx >= 0xffff ||
> > > + hintsi->dy >= 0xffff ||
> > > + hintsj->dx >= 0xffff ||
> > > + hintsj->dy >= 0xffff ||
> > > + (hintsi->dx <
> > > + hintsj->dx + (hintsj->cx & 0x8fff) &&
> > > + hintsi->dx + (hintsi->cx & 0x8fff) >
> > > + hintsj->dx) ||
> > > + (hintsi->dy <
> > > + hintsj->dy + (hintsj->cy & 0x8fff) &&
> > > + hintsi->dy + (hintsi->cy & 0x8fff) >
> > > + hintsj->dy))
> > > + valid = false;
> > > + }
> > > + }
> > > + }
> > > + if (!valid)
> > > + for (i = 0; i < vbox->num_crtcs; ++i) {
> > > + if (vbox->last_mode_hints[i].enabled) {
> > > + vbox->last_mode_hints[i].dx = currentx;
> > > + vbox->last_mode_hints[i].dy = 0;
> > > + currentx +=
> > > + vbox->last_mode_hints[i].cx & 0x8fff;
> > > + }
> > > + }
> > > +}
> > > +
> > > +/**
> > > + * Query the host for the most recent video mode hints.
> > > + */
> > > +static void vbox_update_mode_hints(struct vbox_private *vbox)
> > > +{
> > > + struct drm_device *dev = vbox->dev;
> > > + struct drm_connector *connector;
> > > + struct vbox_connector *vbox_connector;
> > > + struct vbva_modehint *hints;
> > > + u16 flags;
> > > + bool disconnected;
> > > + unsigned int crtc_id;
> > > + int ret;
> > > +
> > > + ret = hgsmi_get_mode_hints(vbox->guest_pool, vbox->num_crtcs,
> > > + vbox->last_mode_hints);
> > > + if (ret) {
> > > + DRM_ERROR("vboxvideo: hgsmi_get_mode_hints failed: %d\n", ret);
> > > + return;
> > > + }
> > > +
> > > + validate_or_set_position_hints(vbox);
> > > + drm_modeset_lock_all(dev);
> > > + list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
> > > + vbox_connector = to_vbox_connector(connector);
> > > + hints =
> > > + &vbox->last_mode_hints[vbox_connector->vbox_crtc->crtc_id];
> > > + if (hints->magic == VBVAMODEHINT_MAGIC) {
> > > + disconnected = !(hints->enabled);
> > > + crtc_id = vbox_connector->vbox_crtc->crtc_id;
> > > + flags = VBVA_SCREEN_F_ACTIVE
> > > + | (disconnected ? VBVA_SCREEN_F_DISABLED :
> > > + VBVA_SCREEN_F_BLANK);
> > > + vbox_connector->mode_hint.width = hints->cx & 0x8fff;
> > > + vbox_connector->mode_hint.height = hints->cy & 0x8fff;
> > > + vbox_connector->vbox_crtc->x_hint = hints->dx;
> > > + vbox_connector->vbox_crtc->y_hint = hints->dy;
> > > + vbox_connector->mode_hint.disconnected = disconnected;
> > > + if (vbox_connector->vbox_crtc->disconnected !=
> > > + disconnected) {
> > > + hgsmi_process_display_info(vbox->guest_pool,
> > > + crtc_id, 0, 0, 0,
> > > + hints->cx * 4,
> > > + hints->cx,
> > > + hints->cy, 0,
> > > + flags);
> > > + vbox_connector->vbox_crtc->disconnected =
> > > + disconnected;
> > > + }
> > > + }
> > > + }
> > > + drm_modeset_unlock_all(dev);
> > > +}
> > > +
> > > +static void vbox_hotplug_worker(struct work_struct *work)
> > > +{
> > > + struct vbox_private *vbox = container_of(work, struct vbox_private,
> > > + hotplug_work);
> > > +
> > > + vbox_update_mode_hints(vbox);
> > > + drm_kms_helper_hotplug_event(vbox->dev);
> > > +}
> > > +
> > > +int vbox_irq_init(struct vbox_private *vbox)
> > > +{
> > > + int ret;
> > > +
> > > + vbox_update_mode_hints(vbox);
> > > + ret = drm_irq_install(vbox->dev, vbox->dev->pdev->irq);
> > > + if (unlikely(ret != 0)) {
> > > + vbox_irq_fini(vbox);
> > > + DRM_ERROR("Failed installing irq: %d\n", ret);
> > > + return 1;
> > > + }
> > > + INIT_WORK(&vbox->hotplug_work, vbox_hotplug_worker);
> > > + vbox->isr_installed = true;
> > > + return 0;
> > > +}
> > > +
> > > +void vbox_irq_fini(struct vbox_private *vbox)
> > > +{
> > > + if (vbox->isr_installed) {
> > > + drm_irq_uninstall(vbox->dev);
> > > + flush_work(&vbox->hotplug_work);
> > > + vbox->isr_installed = false;
> > > + }
> > > +}
> > > diff --git a/drivers/staging/vboxvideo/vbox_main.c b/drivers/staging/vboxvideo/vbox_main.c
> > > new file mode 100644
> > > index 000000000000..e87d804256ca
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_main.c
> > > @@ -0,0 +1,528 @@
> > > +/*
> > > + * Copyright (C) 2013-2017 Oracle Corporation
> > > + * This file is based on ast_main.c
> > > + * Copyright 2012 Red Hat Inc.
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the
> > > + * "Software"), to deal in the Software without restriction, including
> > > + * without limitation the rights to use, copy, modify, merge, publish,
> > > + * distribute, sub license, and/or sell copies of the Software, and to
> > > + * permit persons to whom the Software is furnished to do so, subject to
> > > + * the following conditions:
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
> > > + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > > + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
> > > + * USE OR OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * The above copyright notice and this permission notice (including the
> > > + * next paragraph) shall be included in all copies or substantial portions
> > > + * of the Software.
> > > + *
> > > + * Authors: Dave Airlie <airlied@xxxxxxxxxx>,
> > > + * Michael Thayer <michael.thayer@xxxxxxxxxx,
> > > + * Hans de Goede <hdegoede@xxxxxxxxxx>
> > > + */
> > > +#include <drm/drm_fb_helper.h>
> > > +#include <drm/drm_crtc_helper.h>
> > > +
> > > +#include "vbox_drv.h"
> > > +#include "vbox_err.h"
> > > +#include "vboxvideo_guest.h"
> > > +#include "vboxvideo_vbe.h"
> > > +
> > > +static void vbox_user_framebuffer_destroy(struct drm_framebuffer *fb)
> > > +{
> > > + struct vbox_framebuffer *vbox_fb = to_vbox_framebuffer(fb);
> > > +
> > > + if (vbox_fb->obj)
> > > + drm_gem_object_unreference_unlocked(vbox_fb->obj);
> > > +
> > > + drm_framebuffer_cleanup(fb);
> > > + kfree(fb);
> > > +}
> > > +
> > > +void vbox_enable_accel(struct vbox_private *vbox)
> > > +{
> > > + unsigned int i;
> > > + struct vbva_buffer *vbva;
> > > +
> > > + if (!vbox->vbva_info || !vbox->vbva_buffers) {
> > > + /* Should never happen... */
> > > + DRM_ERROR("vboxvideo: failed to set up VBVA.\n");
> > > + return;
> > > + }
> > > +
> > > + for (i = 0; i < vbox->num_crtcs; ++i) {
> > > + if (!vbox->vbva_info[i].vbva) {
> > > + vbva = (struct vbva_buffer *)
> > > + ((u8 *)vbox->vbva_buffers +
> > > + i * VBVA_MIN_BUFFER_SIZE);
> > > + if (!vbva_enable(&vbox->vbva_info[i],
> > > + vbox->guest_pool, vbva, i)) {
> > > + /* very old host or driver error. */
> > > + DRM_ERROR("vboxvideo: vbva_enable failed\n");
> > > + return;
> > > + }
> > > + }
> > > + }
> > > +}
> > > +
> > > +void vbox_disable_accel(struct vbox_private *vbox)
> > > +{
> > > + unsigned int i;
> > > +
> > > + for (i = 0; i < vbox->num_crtcs; ++i)
> > > + vbva_disable(&vbox->vbva_info[i], vbox->guest_pool, i);
> > > +}
> > > +
> > > +void vbox_report_caps(struct vbox_private *vbox)
> > > +{
> > > + u32 caps = VBVACAPS_DISABLE_CURSOR_INTEGRATION
> > > + | VBVACAPS_IRQ | VBVACAPS_USE_VBVA_ONLY;
> > > + if (vbox->initial_mode_queried)
> > > + caps |= VBVACAPS_VIDEO_MODE_HINTS;
> > > + hgsmi_send_caps_info(vbox->guest_pool, caps);
> > > +}
> > > +
> > > +/**
> > > + * Send information about dirty rectangles to VBVA. If necessary we enable
> > > + * VBVA first, as this is normally disabled after a change of master in case
> > > + * the new master does not send dirty rectangle information (is this even
> > > + * allowed?)
> > > + */
> > > +void vbox_framebuffer_dirty_rectangles(struct drm_framebuffer *fb,
> > > + struct drm_clip_rect *rects,
> > > + unsigned int num_rects)
> > > +{
> > > + struct vbox_private *vbox = fb->dev->dev_private;
> > > + struct drm_crtc *crtc;
> > > + unsigned int i;
> > > +
> > > + mutex_lock(&vbox->hw_mutex);
> > > + list_for_each_entry(crtc, &fb->dev->mode_config.crtc_list, head) {
> > > + if (CRTC_FB(crtc) == fb) {
> > > + vbox_enable_accel(vbox);
> > > + for (i = 0; i < num_rects; ++i) {
> > > + struct vbva_cmd_hdr cmd_hdr;
> > > + unsigned int crtc_id =
> > > + to_vbox_crtc(crtc)->crtc_id;
> > > +
> > > + if ((rects[i].x1 >
> > > + crtc->x + crtc->hwmode.hdisplay) ||
> > > + (rects[i].y1 >
> > > + crtc->y + crtc->hwmode.vdisplay) ||
> > > + (rects[i].x2 < crtc->x) ||
> > > + (rects[i].y2 < crtc->y))
> > > + continue;
> > > +
> > > + cmd_hdr.x = (s16)rects[i].x1;
> > > + cmd_hdr.y = (s16)rects[i].y1;
> > > + cmd_hdr.w = (u16)rects[i].x2 - rects[i].x1;
> > > + cmd_hdr.h = (u16)rects[i].y2 - rects[i].y1;
> > > +
> > > + if (vbva_buffer_begin_update(
> > > + &vbox->vbva_info[crtc_id],
> > > + vbox->guest_pool)) {
> > > + vbva_write(&vbox->vbva_info[crtc_id],
> > > + vbox->guest_pool,
> > > + &cmd_hdr, sizeof(cmd_hdr));
> > > + vbva_buffer_end_update(
> > > + &vbox->vbva_info[crtc_id]);
> > > + }
> > > + }
> > > + }
> > > + }
> > > + mutex_unlock(&vbox->hw_mutex);
> > > +}
> > > +
> > > +static int vbox_user_framebuffer_dirty(struct drm_framebuffer *fb,
> > > + struct drm_file *file_priv,
> > > + unsigned int flags, unsigned int color,
> > > + struct drm_clip_rect *rects,
> > > + unsigned int num_rects)
> > > +{
> > > + vbox_framebuffer_dirty_rectangles(fb, rects, num_rects);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static const struct drm_framebuffer_funcs vbox_fb_funcs = {
> > > + .destroy = vbox_user_framebuffer_destroy,
> > > + .dirty = vbox_user_framebuffer_dirty,
> > > +};
> > > +
> > > +int vbox_framebuffer_init(struct drm_device *dev,
> > > + struct vbox_framebuffer *vbox_fb,
> > > + const struct DRM_MODE_FB_CMD *mode_cmd,
> > > + struct drm_gem_object *obj)
> > > +{
> > > + int ret;
> > > +
> > > + drm_helper_mode_fill_fb_struct(dev, &vbox_fb->base, mode_cmd);
> > > + vbox_fb->obj = obj;
> > > + ret = drm_framebuffer_init(dev, &vbox_fb->base, &vbox_fb_funcs);
> > > + if (ret) {
> > > + DRM_ERROR("framebuffer init failed %d\n", ret);
> > > + return ret;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static struct drm_framebuffer *vbox_user_framebuffer_create(
> > > + struct drm_device *dev,
> > > + struct drm_file *filp,
> > > + const struct drm_mode_fb_cmd2 *mode_cmd)
> > > +{
> > > + struct drm_gem_object *obj;
> > > + struct vbox_framebuffer *vbox_fb;
> > > + int ret;
> > > +
> > > + obj = drm_gem_object_lookup(filp, mode_cmd->handles[0]);
> > > + if (!obj)
> > > + return ERR_PTR(-ENOENT);
> > > +
> > > + vbox_fb = kzalloc(sizeof(*vbox_fb), GFP_KERNEL);
> > > + if (!vbox_fb) {
> > > + drm_gem_object_unreference_unlocked(obj);
> > > + return ERR_PTR(-ENOMEM);
> > > + }
> > > +
> > > + ret = vbox_framebuffer_init(dev, vbox_fb, mode_cmd, obj);
> > > + if (ret) {
> > > + drm_gem_object_unreference_unlocked(obj);
> > > + kfree(vbox_fb);
> > > + return ERR_PTR(ret);
> > > + }
> > > +
> > > + return &vbox_fb->base;
> > > +}
> > > +
> > > +static const struct drm_mode_config_funcs vbox_mode_funcs = {
> > > + .fb_create = vbox_user_framebuffer_create,
> > > +};
> > > +
> > > +static void vbox_accel_fini(struct vbox_private *vbox)
> > > +{
> > > + if (vbox->vbva_info) {
> > > + vbox_disable_accel(vbox);
> > > + kfree(vbox->vbva_info);
> > > + vbox->vbva_info = NULL;
> > > + }
> > > + if (vbox->vbva_buffers) {
> > > + pci_iounmap(vbox->dev->pdev, vbox->vbva_buffers);
> > > + vbox->vbva_buffers = NULL;
> > > + }
> > > +}
> > > +
> > > +static int vbox_accel_init(struct vbox_private *vbox)
> > > +{
> > > + unsigned int i;
> > > +
> > > + vbox->vbva_info = kcalloc(vbox->num_crtcs, sizeof(*vbox->vbva_info),
> > > + GFP_KERNEL);
> > > + if (!vbox->vbva_info)
> > > + return -ENOMEM;
> > > +
> > > + /* Take a command buffer for each screen from the end of usable VRAM. */
> > > + vbox->available_vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE;
> > > +
> > > + vbox->vbva_buffers = pci_iomap_range(vbox->dev->pdev, 0,
> > > + vbox->available_vram_size,
> > > + vbox->num_crtcs *
> > > + VBVA_MIN_BUFFER_SIZE);
> > > + if (!vbox->vbva_buffers)
> > > + return -ENOMEM;
> > > +
> > > + for (i = 0; i < vbox->num_crtcs; ++i)
> > > + vbva_setup_buffer_context(&vbox->vbva_info[i],
> > > + vbox->available_vram_size +
> > > + i * VBVA_MIN_BUFFER_SIZE,
> > > + VBVA_MIN_BUFFER_SIZE);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +/** Do we support the 4.3 plus mode hint reporting interface? */
> > > +static bool have_hgsmi_mode_hints(struct vbox_private *vbox)
> > > +{
> > > + u32 have_hints, have_cursor;
> > > + int ret;
> > > +
> > > + ret = hgsmi_query_conf(vbox->guest_pool,
> > > + VBOX_VBVA_CONF32_MODE_HINT_REPORTING,
> > > + &have_hints);
> > > + if (RT_FAILURE(ret))
> > > + return false;
> > > +
> > > + ret = hgsmi_query_conf(vbox->guest_pool,
> > > + VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING,
> > > + &have_cursor);
> > > + if (RT_FAILURE(ret))
> > > + return false;
> > > +
> > > + return have_hints == VINF_SUCCESS && have_cursor == VINF_SUCCESS;
> > > +}
> > > +
> > > +static bool vbox_check_supported(u16 id)
> > > +{
> > > + u16 dispi_id;
> > > +
> > > + vbox_write_ioport(VBE_DISPI_INDEX_ID, id);
> > > + dispi_id = inw(VBE_DISPI_IOPORT_DATA);
> > > +
> > > + return dispi_id == id;
> > > +}
> > > +
> > > +/**
> > > + * Set up our heaps and data exchange buffers in VRAM before handing the rest
> > > + * to the memory manager.
> > > + */
> > > +static int vbox_hw_init(struct vbox_private *vbox)
> > > +{
> > > + int ret;
> > > +
> > > + vbox->full_vram_size = inl(VBE_DISPI_IOPORT_DATA);
> > > + vbox->any_pitch = vbox_check_supported(VBE_DISPI_ID_ANYX);
> > > +
> > > + DRM_INFO("VRAM %08x\n", vbox->full_vram_size);
> > > +
> > > + /* Map guest-heap at end of vram */
> > > + vbox->guest_heap =
> > > + pci_iomap_range(vbox->dev->pdev, 0, GUEST_HEAP_OFFSET(vbox),
> > > + GUEST_HEAP_SIZE);
> > > + if (!vbox->guest_heap)
> > > + return -ENOMEM;
> > > +
> > > + /* Create guest-heap mem-pool use 2^4 = 16 byte chunks */
> > > + vbox->guest_pool = gen_pool_create(4, -1);
> > > + if (!vbox->guest_pool)
> > > + return -ENOMEM;
> > > +
> > > + ret = gen_pool_add_virt(vbox->guest_pool,
> > > + (unsigned long)vbox->guest_heap,
> > > + GUEST_HEAP_OFFSET(vbox),
> > > + GUEST_HEAP_USABLE_SIZE, -1);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + ret = hgsmi_test_query_conf(vbox->guest_pool);
> > > + if (ret) {
> > > + DRM_ERROR("vboxvideo: hgsmi_test_query_conf failed\n");
> > > + return ret;
> > > + }
> > > +
> > > + /* Reduce available VRAM size to reflect the guest heap. */
> > > + vbox->available_vram_size = GUEST_HEAP_OFFSET(vbox);
> > > + /* Linux drm represents monitors as a 32-bit array. */
> > > + hgsmi_query_conf(vbox->guest_pool, VBOX_VBVA_CONF32_MONITOR_COUNT,
> > > + &vbox->num_crtcs);
> > > + vbox->num_crtcs = clamp_t(u32, vbox->num_crtcs, 1, VBOX_MAX_SCREENS);
> > > +
> > > + if (!have_hgsmi_mode_hints(vbox))
> > > + return -ENOTSUPP;
> > > +
> > > + vbox->last_mode_hints =
> > > + kcalloc(vbox->num_crtcs, sizeof(struct vbva_modehint), GFP_KERNEL);
> > > + if (!vbox->last_mode_hints)
> > > + return -ENOMEM;
> > > +
> > > + return vbox_accel_init(vbox);
> > > +}
> > > +
> > > +static void vbox_hw_fini(struct vbox_private *vbox)
> > > +{
> > > + vbox_accel_fini(vbox);
> > > + kfree(vbox->last_mode_hints);
> > > + vbox->last_mode_hints = NULL;
> > > +}
> > > +
> > > +int vbox_driver_load(struct drm_device *dev, unsigned long flags)
> > > +{
> > > + struct vbox_private *vbox;
> > > + int ret = 0;
> > > +
> > > + if (!vbox_check_supported(VBE_DISPI_ID_HGSMI))
> > > + return -ENODEV;
> > > +
> > > + vbox = kzalloc(sizeof(*vbox), GFP_KERNEL);
> > > + if (!vbox)
> > > + return -ENOMEM;
> > > +
> > > + dev->dev_private = vbox;
> > > + vbox->dev = dev;
> > > +
> > > + mutex_init(&vbox->hw_mutex);
> > > +
> > > + ret = vbox_hw_init(vbox);
> > > + if (ret)
> > > + goto out_free;
> > > +
> > > + ret = vbox_mm_init(vbox);
> > > + if (ret)
> > > + goto out_free;
> > > +
> > > + drm_mode_config_init(dev);
> > > +
> > > + dev->mode_config.funcs = (void *)&vbox_mode_funcs;
> > > + dev->mode_config.min_width = 64;
> > > + dev->mode_config.min_height = 64;
> > > + dev->mode_config.preferred_depth = 24;
> > > + dev->mode_config.max_width = VBE_DISPI_MAX_XRES;
> > > + dev->mode_config.max_height = VBE_DISPI_MAX_YRES;
> > > +
> > > + ret = vbox_mode_init(dev);
> > > + if (ret)
> > > + goto out_free;
> > > +
> > > + ret = vbox_irq_init(vbox);
> > > + if (ret)
> > > + goto out_free;
> > > +
> > > + ret = vbox_fbdev_init(dev);
> > > + if (ret)
> > > + goto out_free;
> > > +
> > > + return 0;
> > > +
> > > +out_free:
> > > + vbox_driver_unload(dev);
> > > + return ret;
> > > +}
> > > +
> > > +void vbox_driver_unload(struct drm_device *dev)
> > > +{
> > > + struct vbox_private *vbox = dev->dev_private;
> > > +
> > > + vbox_fbdev_fini(dev);
> > > + vbox_irq_fini(vbox);
> > > + vbox_mode_fini(dev);
> > > + if (dev->mode_config.funcs)
> > > + drm_mode_config_cleanup(dev);
> > > +
> > > + vbox_hw_fini(vbox);
> > > + vbox_mm_fini(vbox);
> > > + if (vbox->guest_pool)
> > > + gen_pool_destroy(vbox->guest_pool);
> > > + if (vbox->guest_heap)
> > > + pci_iounmap(dev->pdev, vbox->guest_heap);
> > > + kfree(vbox);
> > > + dev->dev_private = NULL;
> > > +}
> > > +
> > > +/**
> > > + * @note this is described in the DRM framework documentation. AST does not
> > > + * have it, but we get an oops on driver unload if it is not present.
> > > + */
> > > +void vbox_driver_lastclose(struct drm_device *dev)
> > > +{
> > > + struct vbox_private *vbox = dev->dev_private;
> > > +
> > > + if (vbox->fbdev)
> > > + drm_fb_helper_restore_fbdev_mode_unlocked(&vbox->fbdev->helper);
> > > +}
> > > +
> > > +int vbox_gem_create(struct drm_device *dev,
> > > + u32 size, bool iskernel, struct drm_gem_object **obj)
> > > +{
> > > + struct vbox_bo *vboxbo;
> > > + int ret;
> > > +
> > > + *obj = NULL;
> > > +
> > > + size = roundup(size, PAGE_SIZE);
> > > + if (size == 0)
> > > + return -EINVAL;
> > > +
> > > + ret = vbox_bo_create(dev, size, 0, 0, &vboxbo);
> > > + if (ret) {
> > > + if (ret != -ERESTARTSYS)
> > > + DRM_ERROR("failed to allocate GEM object\n");
> > > + return ret;
> > > + }
> > > +
> > > + *obj = &vboxbo->gem;
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +int vbox_dumb_create(struct drm_file *file,
> > > + struct drm_device *dev, struct drm_mode_create_dumb *args)
> > > +{
> > > + int ret;
> > > + struct drm_gem_object *gobj;
> > > + u32 handle;
> > > +
> > > + args->pitch = args->width * ((args->bpp + 7) / 8);
> > > + args->size = args->pitch * args->height;
> > > +
> > > + ret = vbox_gem_create(dev, args->size, false, &gobj);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + ret = drm_gem_handle_create(file, gobj, &handle);
> > > + drm_gem_object_unreference_unlocked(gobj);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + args->handle = handle;
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static void vbox_bo_unref(struct vbox_bo **bo)
> > > +{
> > > + struct ttm_buffer_object *tbo;
> > > +
> > > + if ((*bo) == NULL)
> > > + return;
> > > +
> > > + tbo = &((*bo)->bo);
> > > + ttm_bo_unref(&tbo);
> > > + if (!tbo)
> > > + *bo = NULL;
> > > +}
> > > +
> > > +void vbox_gem_free_object(struct drm_gem_object *obj)
> > > +{
> > > + struct vbox_bo *vbox_bo = gem_to_vbox_bo(obj);
> > > +
> > > + vbox_bo_unref(&vbox_bo);
> > > +}
> > > +
> > > +static inline u64 vbox_bo_mmap_offset(struct vbox_bo *bo)
> > > +{
> > > + return drm_vma_node_offset_addr(&bo->bo.vma_node);
> > > +}
> > > +
> > > +int
> > > +vbox_dumb_mmap_offset(struct drm_file *file,
> > > + struct drm_device *dev,
> > > + u32 handle, u64 *offset)
> > > +{
> > > + struct drm_gem_object *obj;
> > > + int ret;
> > > + struct vbox_bo *bo;
> > > +
> > > + mutex_lock(&dev->struct_mutex);
> > > + obj = drm_gem_object_lookup(file, handle);
> > > + if (!obj) {
> > > + ret = -ENOENT;
> > > + goto out_unlock;
> > > + }
> > > +
> > > + bo = gem_to_vbox_bo(obj);
> > > + *offset = vbox_bo_mmap_offset(bo);
> > > +
> > > + drm_gem_object_unreference(obj);
> > > + ret = 0;
> > > +
> > > +out_unlock:
> > > + mutex_unlock(&dev->struct_mutex);
> > > + return ret;
> > > +}
> > > diff --git a/drivers/staging/vboxvideo/vbox_mode.c b/drivers/staging/vboxvideo/vbox_mode.c
> > > new file mode 100644
> > > index 000000000000..fbb572c04c0f
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_mode.c
> > > @@ -0,0 +1,864 @@
> > > +/*
> > > + * Copyright (C) 2013-2017 Oracle Corporation
> > > + * This file is based on ast_mode.c
> > > + * Copyright 2012 Red Hat Inc.
> > > + * Parts based on xf86-video-ast
> > > + * Copyright (c) 2005 ASPEED Technology Inc.
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the
> > > + * "Software"), to deal in the Software without restriction, including
> > > + * without limitation the rights to use, copy, modify, merge, publish,
> > > + * distribute, sub license, and/or sell copies of the Software, and to
> > > + * permit persons to whom the Software is furnished to do so, subject to
> > > + * the following conditions:
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
> > > + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > > + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
> > > + * USE OR OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * The above copyright notice and this permission notice (including the
> > > + * next paragraph) shall be included in all copies or substantial portions
> > > + * of the Software.
> > > + *
> > > + */
> > > +/*
> > > + * Authors: Dave Airlie <airlied@xxxxxxxxxx>
> > > + * Michael Thayer <michael.thayer@xxxxxxxxxx,
> > > + * Hans de Goede <hdegoede@xxxxxxxxxx>
> > > + */
> > > +#include <linux/export.h>
> > > +#include <drm/drm_crtc_helper.h>
> > > +#include <drm/drm_plane_helper.h>
> > > +
> > > +#include "vbox_drv.h"
> > > +#include "vboxvideo.h"
> > > +#include "hgsmi_channels.h"
> > > +
> > > +static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
> > > + u32 handle, u32 width, u32 height,
> > > + s32 hot_x, s32 hot_y);
> > > +static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y);
> > > +
> > > +/**
> > > + * Set a graphics mode. Poke any required values into registers, do an HGSMI
> > > + * mode set and tell the host we support advanced graphics functions.
> > > + */
> > > +static void vbox_do_modeset(struct drm_crtc *crtc,
> > > + const struct drm_display_mode *mode)
> > > +{
> > > + struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
> > > + struct vbox_private *vbox;
> > > + int width, height, bpp, pitch;
> > > + unsigned int crtc_id;
> > > + u16 flags;
> > > + s32 x_offset, y_offset;
> > > +
> > > + vbox = crtc->dev->dev_private;
> > > + width = mode->hdisplay ? mode->hdisplay : 640;
> > > + height = mode->vdisplay ? mode->vdisplay : 480;
> > > + crtc_id = vbox_crtc->crtc_id;
> > > + bpp = crtc->enabled ? CRTC_FB(crtc)->format->cpp[0] * 8 : 32;
> > > + pitch = crtc->enabled ? CRTC_FB(crtc)->pitches[0] : width * bpp / 8;
> > > + x_offset = vbox->single_framebuffer ? crtc->x : vbox_crtc->x_hint;
> > > + y_offset = vbox->single_framebuffer ? crtc->y : vbox_crtc->y_hint;
> > > +
> > > + /*
> > > + * This is the old way of setting graphics modes. It assumed one screen
> > > + * and a frame-buffer at the start of video RAM. On older versions of
> > > + * VirtualBox, certain parts of the code still assume that the first
> > > + * screen is programmed this way, so try to fake it.
> > > + */
> > > + if (vbox_crtc->crtc_id == 0 && crtc->enabled &&
> > > + vbox_crtc->fb_offset / pitch < 0xffff - crtc->y &&
> > > + vbox_crtc->fb_offset % (bpp / 8) == 0) {
> > > + vbox_write_ioport(VBE_DISPI_INDEX_XRES, width);
> > > + vbox_write_ioport(VBE_DISPI_INDEX_YRES, height);
> > > + vbox_write_ioport(VBE_DISPI_INDEX_VIRT_WIDTH, pitch * 8 / bpp);
> > > + vbox_write_ioport(VBE_DISPI_INDEX_BPP,
> > > + CRTC_FB(crtc)->format->cpp[0] * 8);
> > > + vbox_write_ioport(VBE_DISPI_INDEX_ENABLE, VBE_DISPI_ENABLED);
> > > + vbox_write_ioport(
> > > + VBE_DISPI_INDEX_X_OFFSET,
> > > + vbox_crtc->fb_offset % pitch / bpp * 8 + crtc->x);
> > > + vbox_write_ioport(VBE_DISPI_INDEX_Y_OFFSET,
> > > + vbox_crtc->fb_offset / pitch + crtc->y);
> > > + }
> > > +
> > > + flags = VBVA_SCREEN_F_ACTIVE;
> > > + flags |= (crtc->enabled && !vbox_crtc->blanked) ?
> > > + 0 : VBVA_SCREEN_F_BLANK;
> > > + flags |= vbox_crtc->disconnected ? VBVA_SCREEN_F_DISABLED : 0;
> > > + hgsmi_process_display_info(vbox->guest_pool, vbox_crtc->crtc_id,
> > > + x_offset, y_offset,
> > > + crtc->x * bpp / 8 + crtc->y * pitch,
> > > + pitch, width, height,
> > > + vbox_crtc->blanked ? 0 : bpp, flags);
> > > +}
> > > +
> > > +static int vbox_set_view(struct drm_crtc *crtc)
> > > +{
> > > + struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
> > > + struct vbox_private *vbox = crtc->dev->dev_private;
> > > + struct vbva_infoview *p;
> > > +
> > > + /*
> > > + * Tell the host about the view. This design originally targeted the
> > > + * Windows XP driver architecture and assumed that each screen would
> > > + * have a dedicated frame buffer with the command buffer following it,
> > > + * the whole being a "view". The host works out which screen a command
> > > + * buffer belongs to by checking whether it is in the first view, then
> > > + * whether it is in the second and so on. The first match wins. We
> > > + * cheat around this by making the first view be the managed memory
> > > + * plus the first command buffer, the second the same plus the second
> > > + * buffer and so on.
> > > + */
> > > + p = hgsmi_buffer_alloc(vbox->guest_pool, sizeof(*p),
> > > + HGSMI_CH_VBVA, VBVA_INFO_VIEW);
> > > + if (!p)
> > > + return -ENOMEM;
> > > +
> > > + p->view_index = vbox_crtc->crtc_id;
> > > + p->view_offset = vbox_crtc->fb_offset;
> > > + p->view_size = vbox->available_vram_size - vbox_crtc->fb_offset +
> > > + vbox_crtc->crtc_id * VBVA_MIN_BUFFER_SIZE;
> > > + p->max_screen_size = vbox->available_vram_size - vbox_crtc->fb_offset;
> > > +
> > > + hgsmi_buffer_submit(vbox->guest_pool, p);
> > > + hgsmi_buffer_free(vbox->guest_pool, p);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static void vbox_crtc_load_lut(struct drm_crtc *crtc)
> > > +{
> > > +}
> > > +
> > > +static void vbox_crtc_dpms(struct drm_crtc *crtc, int mode)
> > > +{
> > > + struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
> > > + struct vbox_private *vbox = crtc->dev->dev_private;
> > > +
> > > + switch (mode) {
> > > + case DRM_MODE_DPMS_ON:
> > > + vbox_crtc->blanked = false;
> > > + break;
> > > + case DRM_MODE_DPMS_STANDBY:
> > > + case DRM_MODE_DPMS_SUSPEND:
> > > + case DRM_MODE_DPMS_OFF:
> > > + vbox_crtc->blanked = true;
> > > + break;
> > > + }
> > > +
> > > + mutex_lock(&vbox->hw_mutex);
> > > + vbox_do_modeset(crtc, &crtc->hwmode);
> > > + mutex_unlock(&vbox->hw_mutex);
> > > +}
> > > +
> > > +static bool vbox_crtc_mode_fixup(struct drm_crtc *crtc,
> > > + const struct drm_display_mode *mode,
> > > + struct drm_display_mode *adjusted_mode)
> > > +{
> > > + return true;
> > > +}
> > > +
> > > +/*
> > > + * Try to map the layout of virtual screens to the range of the input device.
> > > + * Return true if we need to re-set the crtc modes due to screen offset
> > > + * changes.
> > > + */
> > > +static bool vbox_set_up_input_mapping(struct vbox_private *vbox)
> > > +{
> > > + struct drm_crtc *crtci;
> > > + struct drm_connector *connectori;
> > > + struct drm_framebuffer *fb1 = NULL;
> > > + bool single_framebuffer = true;
> > > + bool old_single_framebuffer = vbox->single_framebuffer;
> > > + u16 width = 0, height = 0;
> > > +
> > > + /*
> > > + * Are we using an X.Org-style single large frame-buffer for all crtcs?
> > > + * If so then screen layout can be deduced from the crtc offsets.
> > > + * Same fall-back if this is the fbdev frame-buffer.
> > > + */
> > > + list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list, head) {
> > > + if (!fb1) {
> > > + fb1 = CRTC_FB(crtci);
> > > + if (to_vbox_framebuffer(fb1) == &vbox->fbdev->afb)
> > > + break;
> > > + } else if (CRTC_FB(crtci) && fb1 != CRTC_FB(crtci)) {
> > > + single_framebuffer = false;
> > > + }
> > > + }
> > > + if (single_framebuffer) {
> > > + list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
> > > + head) {
> > > + if (to_vbox_crtc(crtci)->crtc_id == 0) {
> > > + vbox->single_framebuffer = true;
> > > + vbox->input_mapping_width =
> > > + CRTC_FB(crtci)->width;
> > > + vbox->input_mapping_height =
> > > + CRTC_FB(crtci)->height;
> > > + return old_single_framebuffer !=
> > > + vbox->single_framebuffer;
> > > + }
> > > + }
> > > + }
> > > + /* Otherwise calculate the total span of all screens. */
> > > + list_for_each_entry(connectori, &vbox->dev->mode_config.connector_list,
> > > + head) {
> > > + struct vbox_connector *vbox_connector =
> > > + to_vbox_connector(connectori);
> > > + struct vbox_crtc *vbox_crtc = vbox_connector->vbox_crtc;
> > > +
> > > + width = max_t(u16, width, vbox_crtc->x_hint +
> > > + vbox_connector->mode_hint.width);
> > > + height = max_t(u16, height, vbox_crtc->y_hint +
> > > + vbox_connector->mode_hint.height);
> > > + }
> > > +
> > > + vbox->single_framebuffer = false;
> > > + vbox->input_mapping_width = width;
> > > + vbox->input_mapping_height = height;
> > > +
> > > + return old_single_framebuffer != vbox->single_framebuffer;
> > > +}
> > > +
> > > +static int vbox_crtc_do_set_base(struct drm_crtc *crtc,
> > > + struct drm_framebuffer *old_fb, int x, int y)
> > > +{
> > > + struct vbox_private *vbox = crtc->dev->dev_private;
> > > + struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
> > > + struct drm_gem_object *obj;
> > > + struct vbox_framebuffer *vbox_fb;
> > > + struct vbox_bo *bo;
> > > + int ret;
> > > + u64 gpu_addr;
> > > +
> > > + /* Unpin the previous fb. */
> > > + if (old_fb) {
> > > + vbox_fb = to_vbox_framebuffer(old_fb);
> > > + obj = vbox_fb->obj;
> > > + bo = gem_to_vbox_bo(obj);
> > > + ret = vbox_bo_reserve(bo, false);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + vbox_bo_unpin(bo);
> > > + vbox_bo_unreserve(bo);
> > > + }
> > > +
> > > + vbox_fb = to_vbox_framebuffer(CRTC_FB(crtc));
> > > + obj = vbox_fb->obj;
> > > + bo = gem_to_vbox_bo(obj);
> > > +
> > > + ret = vbox_bo_reserve(bo, false);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
> > > + if (ret) {
> > > + vbox_bo_unreserve(bo);
> > > + return ret;
> > > + }
> > > +
> > > + if (&vbox->fbdev->afb == vbox_fb)
> > > + vbox_fbdev_set_base(vbox, gpu_addr);
> > > + vbox_bo_unreserve(bo);
> > > +
> > > + /* vbox_set_start_address_crt1(crtc, (u32)gpu_addr); */
> > > + vbox_crtc->fb_offset = gpu_addr;
> > > + if (vbox_set_up_input_mapping(vbox)) {
> > > + struct drm_crtc *crtci;
> > > +
> > > + list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
> > > + head) {
> > > + vbox_set_view(crtc);
> > > + vbox_do_modeset(crtci, &crtci->mode);
> > > + }
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static int vbox_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
> > > + struct drm_framebuffer *old_fb)
> > > +{
> > > + return vbox_crtc_do_set_base(crtc, old_fb, x, y);
> > > +}
> > > +
> > > +static int vbox_crtc_mode_set(struct drm_crtc *crtc,
> > > + struct drm_display_mode *mode,
> > > + struct drm_display_mode *adjusted_mode,
> > > + int x, int y, struct drm_framebuffer *old_fb)
> > > +{
> > > + struct vbox_private *vbox = crtc->dev->dev_private;
> > > + int rc = 0;
> > > +
> > > + vbox_crtc_mode_set_base(crtc, x, y, old_fb);
> > > +
> > > + mutex_lock(&vbox->hw_mutex);
> > > + rc = vbox_set_view(crtc);
> > > + if (!rc)
> > > + vbox_do_modeset(crtc, mode);
> > > + hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
> > > + vbox->input_mapping_width,
> > > + vbox->input_mapping_height);
> > > + mutex_unlock(&vbox->hw_mutex);
> > > +
> > > + return rc;
> > > +}
> > > +
> > > +static void vbox_crtc_disable(struct drm_crtc *crtc)
> > > +{
> > > +}
> > > +
> > > +static void vbox_crtc_prepare(struct drm_crtc *crtc)
> > > +{
> > > +}
> > > +
> > > +static void vbox_crtc_commit(struct drm_crtc *crtc)
> > > +{
> > > +}
> > > +
> > > +static const struct drm_crtc_helper_funcs vbox_crtc_helper_funcs = {
> > > + .dpms = vbox_crtc_dpms,
> > > + .mode_fixup = vbox_crtc_mode_fixup,
> > > + .mode_set = vbox_crtc_mode_set,
> > > + /* .mode_set_base = vbox_crtc_mode_set_base, */
> > > + .disable = vbox_crtc_disable,
> > > + .load_lut = vbox_crtc_load_lut,
> > > + .prepare = vbox_crtc_prepare,
> > > + .commit = vbox_crtc_commit,
> > > +};
> > > +
> > > +static void vbox_crtc_reset(struct drm_crtc *crtc)
> > > +{
> > > +}
> > > +
> > > +static void vbox_crtc_destroy(struct drm_crtc *crtc)
> > > +{
> > > + drm_crtc_cleanup(crtc);
> > > + kfree(crtc);
> > > +}
> > > +
> > > +static const struct drm_crtc_funcs vbox_crtc_funcs = {
> > > + .cursor_move = vbox_cursor_move,
> > > + .cursor_set2 = vbox_cursor_set2,
> > > + .reset = vbox_crtc_reset,
> > > + .set_config = drm_crtc_helper_set_config,
> > > + /* .gamma_set = vbox_crtc_gamma_set, */
> > > + .destroy = vbox_crtc_destroy,
> > > +};
> > > +
> > > +static struct vbox_crtc *vbox_crtc_init(struct drm_device *dev, unsigned int i)
> > > +{
> > > + struct vbox_crtc *vbox_crtc;
> > > +
> > > + vbox_crtc = kzalloc(sizeof(*vbox_crtc), GFP_KERNEL);
> > > + if (!vbox_crtc)
> > > + return NULL;
> > > +
> > > + vbox_crtc->crtc_id = i;
> > > +
> > > + drm_crtc_init(dev, &vbox_crtc->base, &vbox_crtc_funcs);
> > > + drm_mode_crtc_set_gamma_size(&vbox_crtc->base, 256);
> > > + drm_crtc_helper_add(&vbox_crtc->base, &vbox_crtc_helper_funcs);
> > > +
> > > + return vbox_crtc;
> > > +}
> > > +
> > > +static void vbox_encoder_destroy(struct drm_encoder *encoder)
> > > +{
> > > + drm_encoder_cleanup(encoder);
> > > + kfree(encoder);
> > > +}
> > > +
> > > +static struct drm_encoder *vbox_best_single_encoder(struct drm_connector
> > > + *connector)
> > > +{
> > > + int enc_id = connector->encoder_ids[0];
> > > +
> > > + /* pick the encoder ids */
> > > + if (enc_id)
> > > + return drm_encoder_find(connector->dev, enc_id);
> > > +
> > > + return NULL;
> > > +}
> > > +
> > > +static const struct drm_encoder_funcs vbox_enc_funcs = {
> > > + .destroy = vbox_encoder_destroy,
> > > +};
> > > +
> > > +static void vbox_encoder_dpms(struct drm_encoder *encoder, int mode)
> > > +{
> > > +}
> > > +
> > > +static bool vbox_mode_fixup(struct drm_encoder *encoder,
> > > + const struct drm_display_mode *mode,
> > > + struct drm_display_mode *adjusted_mode)
> > > +{
> > > + return true;
> > > +}
> > > +
> > > +static void vbox_encoder_mode_set(struct drm_encoder *encoder,
> > > + struct drm_display_mode *mode,
> > > + struct drm_display_mode *adjusted_mode)
> > > +{
> > > +}
> > > +
> > > +static void vbox_encoder_prepare(struct drm_encoder *encoder)
> > > +{
> > > +}
> > > +
> > > +static void vbox_encoder_commit(struct drm_encoder *encoder)
> > > +{
> > > +}
> > > +
> > > +static const struct drm_encoder_helper_funcs vbox_enc_helper_funcs = {
> > > + .dpms = vbox_encoder_dpms,
> > > + .mode_fixup = vbox_mode_fixup,
> > > + .prepare = vbox_encoder_prepare,
> > > + .commit = vbox_encoder_commit,
> > > + .mode_set = vbox_encoder_mode_set,
> > > +};
> > > +
> > > +static struct drm_encoder *vbox_encoder_init(struct drm_device *dev,
> > > + unsigned int i)
> > > +{
> > > + struct vbox_encoder *vbox_encoder;
> > > +
> > > + vbox_encoder = kzalloc(sizeof(*vbox_encoder), GFP_KERNEL);
> > > + if (!vbox_encoder)
> > > + return NULL;
> > > +
> > > + drm_encoder_init(dev, &vbox_encoder->base, &vbox_enc_funcs,
> > > + DRM_MODE_ENCODER_DAC, NULL);
> > > + drm_encoder_helper_add(&vbox_encoder->base, &vbox_enc_helper_funcs);
> > > +
> > > + vbox_encoder->base.possible_crtcs = 1 << i;
> > > + return &vbox_encoder->base;
> > > +}
> > > +
> > > +/**
> > > + * Generate EDID data with a mode-unique serial number for the virtual
> > > + * monitor to try to persuade Unity that different modes correspond to
> > > + * different monitors and it should not try to force the same resolution on
> > > + * them.
> > > + */
> > > +static void vbox_set_edid(struct drm_connector *connector, int width,
> > > + int height)
> > > +{
> > > + enum { EDID_SIZE = 128 };
> > > + unsigned char edid[EDID_SIZE] = {
> > > + 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, /* header */
> > > + 0x58, 0x58, /* manufacturer (VBX) */
> > > + 0x00, 0x00, /* product code */
> > > + 0x00, 0x00, 0x00, 0x00, /* serial number goes here */
> > > + 0x01, /* week of manufacture */
> > > + 0x00, /* year of manufacture */
> > > + 0x01, 0x03, /* EDID version */
> > > + 0x80, /* capabilities - digital */
> > > + 0x00, /* horiz. res in cm, zero for projectors */
> > > + 0x00, /* vert. res in cm */
> > > + 0x78, /* display gamma (120 == 2.2). */
> > > + 0xEE, /* features (standby, suspend, off, RGB, std */
> > > + /* colour space, preferred timing mode) */
> > > + 0xEE, 0x91, 0xA3, 0x54, 0x4C, 0x99, 0x26, 0x0F, 0x50, 0x54,
> > > + /* chromaticity for standard colour space. */
> > > + 0x00, 0x00, 0x00, /* no default timings */
> > > + 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
> > > + 0x01, 0x01,
> > > + 0x01, 0x01, 0x01, 0x01, /* no standard timings */
> > > + 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x00, 0x02, 0x02,
> > > + 0x02, 0x02,
> > > + /* descriptor block 1 goes below */
> > > + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> > > + /* descriptor block 2, monitor ranges */
> > > + 0x00, 0x00, 0x00, 0xFD, 0x00,
> > > + 0x00, 0xC8, 0x00, 0xC8, 0x64, 0x00, 0x0A, 0x20, 0x20, 0x20,
> > > + 0x20, 0x20,
> > > + /* 0-200Hz vertical, 0-200KHz horizontal, 1000MHz pixel clock */
> > > + 0x20,
> > > + /* descriptor block 3, monitor name */
> > > + 0x00, 0x00, 0x00, 0xFC, 0x00,
> > > + 'V', 'B', 'O', 'X', ' ', 'm', 'o', 'n', 'i', 't', 'o', 'r',
> > > + '\n',
> > > + /* descriptor block 4: dummy data */
> > > + 0x00, 0x00, 0x00, 0x10, 0x00,
> > > + 0x0A, 0x20, 0x20, 0x20, 0x20, 0x20,
> > > + 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
> > > + 0x20,
> > > + 0x00, /* number of extensions */
> > > + 0x00 /* checksum goes here */
> > > + };
> > > + int clock = (width + 6) * (height + 6) * 60 / 10000;
> > > + unsigned int i, sum = 0;
> > > +
> > > + edid[12] = width & 0xff;
> > > + edid[13] = width >> 8;
> > > + edid[14] = height & 0xff;
> > > + edid[15] = height >> 8;
> > > + edid[54] = clock & 0xff;
> > > + edid[55] = clock >> 8;
> > > + edid[56] = width & 0xff;
> > > + edid[58] = (width >> 4) & 0xf0;
> > > + edid[59] = height & 0xff;
> > > + edid[61] = (height >> 4) & 0xf0;
> > > + for (i = 0; i < EDID_SIZE - 1; ++i)
> > > + sum += edid[i];
> > > + edid[EDID_SIZE - 1] = (0x100 - (sum & 0xFF)) & 0xFF;
> > > + drm_mode_connector_update_edid_property(connector, (struct edid *)edid);
> > > +}
> > > +
> > > +static int vbox_get_modes(struct drm_connector *connector)
> > > +{
> > > + struct vbox_connector *vbox_connector = NULL;
> > > + struct drm_display_mode *mode = NULL;
> > > + struct vbox_private *vbox = NULL;
> > > + unsigned int num_modes = 0;
> > > + int preferred_width, preferred_height;
> > > +
> > > + vbox_connector = to_vbox_connector(connector);
> > > + vbox = connector->dev->dev_private;
> > > + /*
> > > + * Heuristic: we do not want to tell the host that we support dynamic
> > > + * resizing unless we feel confident that the user space client using
> > > + * the video driver can handle hot-plug events. So the first time modes
> > > + * are queried after a "master" switch we tell the host that we do not,
> > > + * and immediately after we send the client a hot-plug notification as
> > > + * a test to see if they will respond and query again.
> > > + * That is also the reason why capabilities are reported to the host at
> > > + * this place in the code rather than elsewhere.
> > > + * We need to report the flags location before reporting the IRQ
> > > + * capability.
> > > + */
> > > + hgsmi_report_flags_location(vbox->guest_pool, GUEST_HEAP_OFFSET(vbox) +
> > > + HOST_FLAGS_OFFSET);
> > > + if (vbox_connector->vbox_crtc->crtc_id == 0)
> > > + vbox_report_caps(vbox);
> > > + if (!vbox->initial_mode_queried) {
> > > + if (vbox_connector->vbox_crtc->crtc_id == 0) {
> > > + vbox->initial_mode_queried = true;
> > > + vbox_report_hotplug(vbox);
> > > + }
> > > + return drm_add_modes_noedid(connector, 800, 600);
> > > + }
> > > + num_modes = drm_add_modes_noedid(connector, 2560, 1600);
> > > + preferred_width = vbox_connector->mode_hint.width ?
> > > + vbox_connector->mode_hint.width : 1024;
> > > + preferred_height = vbox_connector->mode_hint.height ?
> > > + vbox_connector->mode_hint.height : 768;
> > > + mode = drm_cvt_mode(connector->dev, preferred_width, preferred_height,
> > > + 60, false, false, false);
> > > + if (mode) {
> > > + mode->type |= DRM_MODE_TYPE_PREFERRED;
> > > + drm_mode_probed_add(connector, mode);
> > > + ++num_modes;
> > > + }
> > > + vbox_set_edid(connector, preferred_width, preferred_height);
> > > + drm_object_property_set_value(
> > > + &connector->base, vbox->dev->mode_config.suggested_x_property,
> > > + vbox_connector->vbox_crtc->x_hint);
> > > + drm_object_property_set_value(
> > > + &connector->base, vbox->dev->mode_config.suggested_y_property,
> > > + vbox_connector->vbox_crtc->y_hint);
> > > +
> > > + return num_modes;
> > > +}
> > > +
> > > +static int vbox_mode_valid(struct drm_connector *connector,
> > > + struct drm_display_mode *mode)
> > > +{
> > > + return MODE_OK;
> > > +}
> > > +
> > > +static void vbox_connector_destroy(struct drm_connector *connector)
> > > +{
> > > + struct vbox_connector *vbox_connector = NULL;
> > > +
> > > + vbox_connector = to_vbox_connector(connector);
> > > + drm_connector_unregister(connector);
> > > + drm_connector_cleanup(connector);
> > > + kfree(connector);
> > > +}
> > > +
> > > +static enum drm_connector_status
> > > +vbox_connector_detect(struct drm_connector *connector, bool force)
> > > +{
> > > + struct vbox_connector *vbox_connector = NULL;
> > > +
> > > + (void)force;
> > > + vbox_connector = to_vbox_connector(connector);
> > > +
> > > + return vbox_connector->mode_hint.disconnected ?
> > > + connector_status_disconnected : connector_status_connected;
> > > +}
> > > +
> > > +static int vbox_fill_modes(struct drm_connector *connector, u32 max_x,
> > > + u32 max_y)
> > > +{
> > > + struct vbox_connector *vbox_connector;
> > > + struct drm_device *dev;
> > > + struct drm_display_mode *mode, *iterator;
> > > +
> > > + vbox_connector = to_vbox_connector(connector);
> > > + dev = vbox_connector->base.dev;
> > > + list_for_each_entry_safe(mode, iterator, &connector->modes, head) {
> > > + list_del(&mode->head);
> > > + drm_mode_destroy(dev, mode);
> > > + }
> > > +
> > > + return drm_helper_probe_single_connector_modes(connector, max_x, max_y);
> > > +}
> > > +
> > > +static const struct drm_connector_helper_funcs vbox_connector_helper_funcs = {
> > > + .mode_valid = vbox_mode_valid,
> > > + .get_modes = vbox_get_modes,
> > > + .best_encoder = vbox_best_single_encoder,
> > > +};
> > > +
> > > +static const struct drm_connector_funcs vbox_connector_funcs = {
> > > + .dpms = drm_helper_connector_dpms,
> > > + .detect = vbox_connector_detect,
> > > + .fill_modes = vbox_fill_modes,
> > > + .destroy = vbox_connector_destroy,
> > > +};
> > > +
> > > +static int vbox_connector_init(struct drm_device *dev,
> > > + struct vbox_crtc *vbox_crtc,
> > > + struct drm_encoder *encoder)
> > > +{
> > > + struct vbox_connector *vbox_connector;
> > > + struct drm_connector *connector;
> > > +
> > > + vbox_connector = kzalloc(sizeof(*vbox_connector), GFP_KERNEL);
> > > + if (!vbox_connector)
> > > + return -ENOMEM;
> > > +
> > > + connector = &vbox_connector->base;
> > > + vbox_connector->vbox_crtc = vbox_crtc;
> > > +
> > > + drm_connector_init(dev, connector, &vbox_connector_funcs,
> > > + DRM_MODE_CONNECTOR_VGA);
> > > + drm_connector_helper_add(connector, &vbox_connector_helper_funcs);
> > > +
> > > + connector->interlace_allowed = 0;
> > > + connector->doublescan_allowed = 0;
> > > +
> > > + drm_mode_create_suggested_offset_properties(dev);
> > > + drm_object_attach_property(&connector->base,
> > > + dev->mode_config.suggested_x_property, -1);
> > > + drm_object_attach_property(&connector->base,
> > > + dev->mode_config.suggested_y_property, -1);
> > > + drm_connector_register(connector);
> > > +
> > > + drm_mode_connector_attach_encoder(connector, encoder);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +int vbox_mode_init(struct drm_device *dev)
> > > +{
> > > + struct vbox_private *vbox = dev->dev_private;
> > > + struct drm_encoder *encoder;
> > > + struct vbox_crtc *vbox_crtc;
> > > + unsigned int i;
> > > +
> > > + /* vbox_cursor_init(dev); */
> > > + for (i = 0; i < vbox->num_crtcs; ++i) {
> > > + vbox_crtc = vbox_crtc_init(dev, i);
> > > + if (!vbox_crtc)
> > > + return -ENOMEM;
> > > + encoder = vbox_encoder_init(dev, i);
> > > + if (!encoder)
> > > + return -ENOMEM;
> > > + vbox_connector_init(dev, vbox_crtc, encoder);
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +void vbox_mode_fini(struct drm_device *dev)
> > > +{
> > > + /* vbox_cursor_fini(dev); */
> > > +}
> > > +
> > > +/**
> > > + * Copy the ARGB image and generate the mask, which is needed in case the host
> > > + * does not support ARGB cursors. The mask is a 1BPP bitmap with the bit set
> > > + * if the corresponding alpha value in the ARGB image is greater than 0xF0.
> > > + */
> > > +static void copy_cursor_image(u8 *src, u8 *dst, u32 width, u32 height,
> > > + size_t mask_size)
> > > +{
> > > + size_t line_size = (width + 7) / 8;
> > > + u32 i, j;
> > > +
> > > + memcpy(dst + mask_size, src, width * height * 4);
> > > + for (i = 0; i < height; ++i)
> > > + for (j = 0; j < width; ++j)
> > > + if (((u32 *)src)[i * width + j] > 0xf0000000)
> > > + dst[i * line_size + j / 8] |= (0x80 >> (j % 8));
> > > +}
> > > +
> > > +static int vbox_cursor_set2(struct drm_crtc *crtc, struct drm_file *file_priv,
> > > + u32 handle, u32 width, u32 height,
> > > + s32 hot_x, s32 hot_y)
> > > +{
> > > + struct vbox_private *vbox = crtc->dev->dev_private;
> > > + struct vbox_crtc *vbox_crtc = to_vbox_crtc(crtc);
> > > + struct ttm_bo_kmap_obj uobj_map;
> > > + size_t data_size, mask_size;
> > > + struct drm_gem_object *obj;
> > > + u32 flags, caps = 0;
> > > + struct vbox_bo *bo;
> > > + bool src_isiomem;
> > > + u8 *dst = NULL;
> > > + u8 *src;
> > > + int ret;
> > > +
> > > + /*
> > > + * Re-set this regularly as in 5.0.20 and earlier the information was
> > > + * lost on save and restore.
> > > + */
> > > + hgsmi_update_input_mapping(vbox->guest_pool, 0, 0,
> > > + vbox->input_mapping_width,
> > > + vbox->input_mapping_height);
> > > + if (!handle) {
> > > + bool cursor_enabled = false;
> > > + struct drm_crtc *crtci;
> > > +
> > > + /* Hide cursor. */
> > > + vbox_crtc->cursor_enabled = false;
> > > + list_for_each_entry(crtci, &vbox->dev->mode_config.crtc_list,
> > > + head)
> > > + if (to_vbox_crtc(crtci)->cursor_enabled)
> > > + cursor_enabled = true;
> > > +
> > > + if (!cursor_enabled)
> > > + hgsmi_update_pointer_shape(vbox->guest_pool, 0, 0, 0,
> > > + 0, 0, NULL, 0);
> > > + return 0;
> > > + }
> > > +
> > > + vbox_crtc->cursor_enabled = true;
> > > +
> > > + if (width > VBOX_MAX_CURSOR_WIDTH || height > VBOX_MAX_CURSOR_HEIGHT ||
> > > + width == 0 || height == 0)
> > > + return -EINVAL;
> > > +
> > > + ret = hgsmi_query_conf(vbox->guest_pool,
> > > + VBOX_VBVA_CONF32_CURSOR_CAPABILITIES, &caps);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + if (!(caps & VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE)) {
> > > + /*
> > > + * -EINVAL means cursor_set2() not supported, -EAGAIN means
> > > + * retry at once.
> > > + */
> > > + return -EBUSY;
> > > + }
> > > +
> > > + obj = drm_gem_object_lookup(file_priv, handle);
> > > + if (!obj) {
> > > + DRM_ERROR("Cannot find cursor object %x for crtc\n", handle);
> > > + return -ENOENT;
> > > + }
> > > +
> > > + bo = gem_to_vbox_bo(obj);
> > > + ret = vbox_bo_reserve(bo, false);
> > > + if (ret)
> > > + goto out_unref_obj;
> > > +
> > > + /*
> > > + * The mask must be calculated based on the alpha
> > > + * channel, one bit per ARGB word, and must be 32-bit
> > > + * padded.
> > > + */
> > > + mask_size = ((width + 7) / 8 * height + 3) & ~3;
> > > + data_size = width * height * 4 + mask_size;
> > > + vbox->cursor_hot_x = min_t(u32, max(hot_x, 0), width);
> > > + vbox->cursor_hot_y = min_t(u32, max(hot_y, 0), height);
> > > + vbox->cursor_width = width;
> > > + vbox->cursor_height = height;
> > > + vbox->cursor_data_size = data_size;
> > > + dst = vbox->cursor_data;
> > > +
> > > + ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &uobj_map);
> > > + if (ret) {
> > > + vbox->cursor_data_size = 0;
> > > + goto out_unreserve_bo;
> > > + }
> > > +
> > > + src = ttm_kmap_obj_virtual(&uobj_map, &src_isiomem);
> > > + if (src_isiomem) {
> > > + DRM_ERROR("src cursor bo not in main memory\n");
> > > + ret = -EIO;
> > > + goto out_unmap_bo;
> > > + }
> > > +
> > > + copy_cursor_image(src, dst, width, height, mask_size);
> > > +
> > > + flags = VBOX_MOUSE_POINTER_VISIBLE | VBOX_MOUSE_POINTER_SHAPE |
> > > + VBOX_MOUSE_POINTER_ALPHA;
> > > + ret = hgsmi_update_pointer_shape(vbox->guest_pool, flags,
> > > + vbox->cursor_hot_x, vbox->cursor_hot_y,
> > > + width, height, dst, data_size);
> > > +out_unmap_bo:
> > > + ttm_bo_kunmap(&uobj_map);
> > > +out_unreserve_bo:
> > > + vbox_bo_unreserve(bo);
> > > +out_unref_obj:
> > > + drm_gem_object_unreference_unlocked(obj);
> > > +
> > > + return ret;
> > > +}
> > > +
> > > +static int vbox_cursor_move(struct drm_crtc *crtc, int x, int y)
> > > +{
> > > + struct vbox_private *vbox = crtc->dev->dev_private;
> > > + u32 flags = VBOX_MOUSE_POINTER_VISIBLE |
> > > + VBOX_MOUSE_POINTER_SHAPE | VBOX_MOUSE_POINTER_ALPHA;
> > > + s32 crtc_x =
> > > + vbox->single_framebuffer ? crtc->x : to_vbox_crtc(crtc)->x_hint;
> > > + s32 crtc_y =
> > > + vbox->single_framebuffer ? crtc->y : to_vbox_crtc(crtc)->y_hint;
> > > + u32 host_x, host_y;
> > > + u32 hot_x = 0;
> > > + u32 hot_y = 0;
> > > + int ret;
> > > +
> > > + /*
> > > + * We compare these to unsigned later and don't
> > > + * need to handle negative.
> > > + */
> > > + if (x + crtc_x < 0 || y + crtc_y < 0 || vbox->cursor_data_size == 0)
> > > + return 0;
> > > +
> > > + ret = hgsmi_cursor_position(vbox->guest_pool, true, x + crtc_x,
> > > + y + crtc_y, &host_x, &host_y);
> > > + /* Work around a bug after save and restore in 5.0.20 and earlier. */
> > > + if (ret || (host_x == 0 && host_y == 0))
> > > + return ret;
> > > +
> > > + if (x + crtc_x < host_x)
> > > + hot_x = min(host_x - x - crtc_x, vbox->cursor_width);
> > > + if (y + crtc_y < host_y)
> > > + hot_y = min(host_y - y - crtc_y, vbox->cursor_height);
> > > +
> > > + if (hot_x == vbox->cursor_hot_x && hot_y == vbox->cursor_hot_y)
> > > + return 0;
> > > +
> > > + vbox->cursor_hot_x = hot_x;
> > > + vbox->cursor_hot_y = hot_y;
> > > +
> > > + return hgsmi_update_pointer_shape(vbox->guest_pool, flags,
> > > + hot_x, hot_y, vbox->cursor_width, vbox->cursor_height,
> > > + vbox->cursor_data, vbox->cursor_data_size);
> > > +}
> > > diff --git a/drivers/staging/vboxvideo/vbox_prime.c b/drivers/staging/vboxvideo/vbox_prime.c
> > > new file mode 100644
> > > index 000000000000..b7453e427a1d
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_prime.c
> > > @@ -0,0 +1,74 @@
> > > +/*
> > > + * Copyright (C) 2017 Oracle Corporation
> > > + * Copyright 2017 Canonical
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * Authors: Andreas Pokorny
> > > + */
> > > +
> > > +#include "vbox_drv.h"
> > > +
> > > +/*
> > > + * Based on qxl_prime.c:
> > > + * Empty Implementations as there should not be any other driver for a virtual
> > > + * device that might share buffers with vboxvideo
> > > + */
> > > +
> > > +int vbox_gem_prime_pin(struct drm_gem_object *obj)
> > > +{
> > > + WARN_ONCE(1, "not implemented");
> > > + return -ENOSYS;
> > > +}
> > > +
> > > +void vbox_gem_prime_unpin(struct drm_gem_object *obj)
> > > +{
> > > + WARN_ONCE(1, "not implemented");
> > > +}
> > > +
> > > +struct sg_table *vbox_gem_prime_get_sg_table(struct drm_gem_object *obj)
> > > +{
> > > + WARN_ONCE(1, "not implemented");
> > > + return ERR_PTR(-ENOSYS);
> > > +}
> > > +
> > > +struct drm_gem_object *vbox_gem_prime_import_sg_table(
> > > + struct drm_device *dev, struct dma_buf_attachment *attach,
> > > + struct sg_table *table)
> > > +{
> > > + WARN_ONCE(1, "not implemented");
> > > + return ERR_PTR(-ENOSYS);
> > > +}
> > > +
> > > +void *vbox_gem_prime_vmap(struct drm_gem_object *obj)
> > > +{
> > > + WARN_ONCE(1, "not implemented");
> > > + return ERR_PTR(-ENOSYS);
> > > +}
> > > +
> > > +void vbox_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
> > > +{
> > > + WARN_ONCE(1, "not implemented");
> > > +}
> > > +
> > > +int vbox_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *area)
> > > +{
> > > + WARN_ONCE(1, "not implemented");
> > > + return -ENOSYS;
> > > +}
> > > diff --git a/drivers/staging/vboxvideo/vbox_ttm.c b/drivers/staging/vboxvideo/vbox_ttm.c
> > > new file mode 100644
> > > index 000000000000..faacf58a1a96
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbox_ttm.c
> > > @@ -0,0 +1,477 @@
> > > +/*
> > > + * Copyright (C) 2013-2017 Oracle Corporation
> > > + * This file is based on ast_ttm.c
> > > + * Copyright 2012 Red Hat Inc.
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the
> > > + * "Software"), to deal in the Software without restriction, including
> > > + * without limitation the rights to use, copy, modify, merge, publish,
> > > + * distribute, sub license, and/or sell copies of the Software, and to
> > > + * permit persons to whom the Software is furnished to do so, subject to
> > > + * the following conditions:
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
> > > + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > > + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
> > > + * USE OR OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * The above copyright notice and this permission notice (including the
> > > + * next paragraph) shall be included in all copies or substantial portions
> > > + * of the Software.
> > > + *
> > > + *
> > > + * Authors: Dave Airlie <airlied@xxxxxxxxxx>
> > > + * Michael Thayer <michael.thayer@xxxxxxxxxx>
> > > + */
> > > +#include "vbox_drv.h"
> > > +#include <ttm/ttm_page_alloc.h>
> > > +
> > > +static inline struct vbox_private *vbox_bdev(struct ttm_bo_device *bd)
> > > +{
> > > + return container_of(bd, struct vbox_private, ttm.bdev);
> > > +}
> > > +
> > > +static int vbox_ttm_mem_global_init(struct drm_global_reference *ref)
> > > +{
> > > + return ttm_mem_global_init(ref->object);
> > > +}
> > > +
> > > +static void vbox_ttm_mem_global_release(struct drm_global_reference *ref)
> > > +{
> > > + ttm_mem_global_release(ref->object);
> > > +}
> > > +
> > > +/**
> > > + * Adds the vbox memory manager object/structures to the global memory manager.
> > > + */
> > > +static int vbox_ttm_global_init(struct vbox_private *vbox)
> > > +{
> > > + struct drm_global_reference *global_ref;
> > > + int r;
> > > +
> > > + global_ref = &vbox->ttm.mem_global_ref;
> > > + global_ref->global_type = DRM_GLOBAL_TTM_MEM;
> > > + global_ref->size = sizeof(struct ttm_mem_global);
> > > + global_ref->init = &vbox_ttm_mem_global_init;
> > > + global_ref->release = &vbox_ttm_mem_global_release;
> > > + r = drm_global_item_ref(global_ref);
> > > + if (r != 0) {
> > > + DRM_ERROR("Failed setting up TTM memory subsystem.\n");
> > > + return r;
> > > + }
> > > +
> > > + vbox->ttm.bo_global_ref.mem_glob = vbox->ttm.mem_global_ref.object;
> > > + global_ref = &vbox->ttm.bo_global_ref.ref;
> > > + global_ref->global_type = DRM_GLOBAL_TTM_BO;
> > > + global_ref->size = sizeof(struct ttm_bo_global);
> > > + global_ref->init = &ttm_bo_global_init;
> > > + global_ref->release = &ttm_bo_global_release;
> > > +
> > > + r = drm_global_item_ref(global_ref);
> > > + if (r != 0) {
> > > + DRM_ERROR("Failed setting up TTM BO subsystem.\n");
> > > + drm_global_item_unref(&vbox->ttm.mem_global_ref);
> > > + return r;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +/**
> > > + * Removes the vbox memory manager object from the global memory manager.
> > > + */
> > > +static void vbox_ttm_global_release(struct vbox_private *vbox)
> > > +{
> > > + if (!vbox->ttm.mem_global_ref.release)
> > > + return;
> > > +
> > > + drm_global_item_unref(&vbox->ttm.bo_global_ref.ref);
> > > + drm_global_item_unref(&vbox->ttm.mem_global_ref);
> > > + vbox->ttm.mem_global_ref.release = NULL;
> > > +}
> > > +
> > > +static void vbox_bo_ttm_destroy(struct ttm_buffer_object *tbo)
> > > +{
> > > + struct vbox_bo *bo;
> > > +
> > > + bo = container_of(tbo, struct vbox_bo, bo);
> > > +
> > > + drm_gem_object_release(&bo->gem);
> > > + kfree(bo);
> > > +}
> > > +
> > > +static bool vbox_ttm_bo_is_vbox_bo(struct ttm_buffer_object *bo)
> > > +{
> > > + if (bo->destroy == &vbox_bo_ttm_destroy)
> > > + return true;
> > > +
> > > + return false;
> > > +}
> > > +
> > > +static int
> > > +vbox_bo_init_mem_type(struct ttm_bo_device *bdev, u32 type,
> > > + struct ttm_mem_type_manager *man)
> > > +{
> > > + switch (type) {
> > > + case TTM_PL_SYSTEM:
> > > + man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
> > > + man->available_caching = TTM_PL_MASK_CACHING;
> > > + man->default_caching = TTM_PL_FLAG_CACHED;
> > > + break;
> > > + case TTM_PL_VRAM:
> > > + man->func = &ttm_bo_manager_func;
> > > + man->flags = TTM_MEMTYPE_FLAG_FIXED | TTM_MEMTYPE_FLAG_MAPPABLE;
> > > + man->available_caching = TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_WC;
> > > + man->default_caching = TTM_PL_FLAG_WC;
> > > + break;
> > > + default:
> > > + DRM_ERROR("Unsupported memory type %u\n", (unsigned int)type);
> > > + return -EINVAL;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static void
> > > +vbox_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
> > > +{
> > > + struct vbox_bo *vboxbo = vbox_bo(bo);
> > > +
> > > + if (!vbox_ttm_bo_is_vbox_bo(bo))
> > > + return;
> > > +
> > > + vbox_ttm_placement(vboxbo, TTM_PL_FLAG_SYSTEM);
> > > + *pl = vboxbo->placement;
> > > +}
> > > +
> > > +static int vbox_bo_verify_access(struct ttm_buffer_object *bo,
> > > + struct file *filp)
> > > +{
> > > + return 0;
> > > +}
> > > +
> > > +static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
> > > + struct ttm_mem_reg *mem)
> > > +{
> > > + struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
> > > + struct vbox_private *vbox = vbox_bdev(bdev);
> > > +
> > > + mem->bus.addr = NULL;
> > > + mem->bus.offset = 0;
> > > + mem->bus.size = mem->num_pages << PAGE_SHIFT;
> > > + mem->bus.base = 0;
> > > + mem->bus.is_iomem = false;
> > > + if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
> > > + return -EINVAL;
> > > + switch (mem->mem_type) {
> > > + case TTM_PL_SYSTEM:
> > > + /* system memory */
> > > + return 0;
> > > + case TTM_PL_VRAM:
> > > + mem->bus.offset = mem->start << PAGE_SHIFT;
> > > + mem->bus.base = pci_resource_start(vbox->dev->pdev, 0);
> > > + mem->bus.is_iomem = true;
> > > + break;
> > > + default:
> > > + return -EINVAL;
> > > + }
> > > + return 0;
> > > +}
> > > +
> > > +static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
> > > + struct ttm_mem_reg *mem)
> > > +{
> > > +}
> > > +
> > > +static int vbox_bo_move(struct ttm_buffer_object *bo,
> > > + bool evict, bool interruptible,
> > > + bool no_wait_gpu, struct ttm_mem_reg *new_mem)
> > > +{
> > > + return ttm_bo_move_memcpy(bo, interruptible, no_wait_gpu, new_mem);
> > > +}
> > > +
> > > +static void vbox_ttm_backend_destroy(struct ttm_tt *tt)
> > > +{
> > > + ttm_tt_fini(tt);
> > > + kfree(tt);
> > > +}
> > > +
> > > +static struct ttm_backend_func vbox_tt_backend_func = {
> > > + .destroy = &vbox_ttm_backend_destroy,
> > > +};
> > > +
> > > +static struct ttm_tt *vbox_ttm_tt_create(struct ttm_bo_device *bdev,
> > > + unsigned long size,
> > > + u32 page_flags,
> > > + struct page *dummy_read_page)
> > > +{
> > > + struct ttm_tt *tt;
> > > +
> > > + tt = kzalloc(sizeof(*tt), GFP_KERNEL);
> > > + if (!tt)
> > > + return NULL;
> > > +
> > > + tt->func = &vbox_tt_backend_func;
> > > + if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
> > > + kfree(tt);
> > > + return NULL;
> > > + }
> > > +
> > > + return tt;
> > > +}
> > > +
> > > +static int vbox_ttm_tt_populate(struct ttm_tt *ttm)
> > > +{
> > > + return ttm_pool_populate(ttm);
> > > +}
> > > +
> > > +static void vbox_ttm_tt_unpopulate(struct ttm_tt *ttm)
> > > +{
> > > + ttm_pool_unpopulate(ttm);
> > > +}
> > > +
> > > +struct ttm_bo_driver vbox_bo_driver = {
> > > + .ttm_tt_create = vbox_ttm_tt_create,
> > > + .ttm_tt_populate = vbox_ttm_tt_populate,
> > > + .ttm_tt_unpopulate = vbox_ttm_tt_unpopulate,
> > > + .init_mem_type = vbox_bo_init_mem_type,
> > > + .eviction_valuable = ttm_bo_eviction_valuable,
> > > + .evict_flags = vbox_bo_evict_flags,
> > > + .move = vbox_bo_move,
> > > + .verify_access = vbox_bo_verify_access,
> > > + .io_mem_reserve = &vbox_ttm_io_mem_reserve,
> > > + .io_mem_free = &vbox_ttm_io_mem_free,
> > > + .io_mem_pfn = ttm_bo_default_io_mem_pfn,
> > > +};
> > > +
> > > +int vbox_mm_init(struct vbox_private *vbox)
> > > +{
> > > + int ret;
> > > + struct drm_device *dev = vbox->dev;
> > > + struct ttm_bo_device *bdev = &vbox->ttm.bdev;
> > > +
> > > + ret = vbox_ttm_global_init(vbox);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + ret = ttm_bo_device_init(&vbox->ttm.bdev,
> > > + vbox->ttm.bo_global_ref.ref.object,
> > > + &vbox_bo_driver,
> > > + dev->anon_inode->i_mapping,
> > > + DRM_FILE_PAGE_OFFSET, true);
> > > + if (ret) {
> > > + DRM_ERROR("Error initialising bo driver; %d\n", ret);
> > > + return ret;
> > > + }
> > > +
> > > + ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
> > > + vbox->available_vram_size >> PAGE_SHIFT);
> > > + if (ret) {
> > > + DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
> > > + return ret;
> > > + }
> > > +#ifdef DRM_MTRR_WC
> > > + vbox->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 0),
> > > + pci_resource_len(dev->pdev, 0),
> > > + DRM_MTRR_WC);
> > > +#else
> > > + vbox->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
> > > + pci_resource_len(dev->pdev, 0));
> > > +#endif
> > > +
> > > + vbox->ttm.mm_initialised = true;
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +void vbox_mm_fini(struct vbox_private *vbox)
> > > +{
> > > +#ifdef DRM_MTRR_WC
> > > + struct drm_device *dev = vbox->dev;
> > > +#endif
> > > + if (!vbox->ttm.mm_initialised)
> > > + return;
> > > + ttm_bo_device_release(&vbox->ttm.bdev);
> > > +
> > > + vbox_ttm_global_release(vbox);
> > > +
> > > +#ifdef DRM_MTRR_WC
> > > + drm_mtrr_del(vbox->fb_mtrr,
> > > + pci_resource_start(dev->pdev, 0),
> > > + pci_resource_len(dev->pdev, 0), DRM_MTRR_WC);
> > > +#else
> > > + arch_phys_wc_del(vbox->fb_mtrr);
> > > +#endif
> > > +}
> > > +
> > > +void vbox_ttm_placement(struct vbox_bo *bo, int domain)
> > > +{
> > > + unsigned int i;
> > > + u32 c = 0;
> > > +
> > > + bo->placement.placement = bo->placements;
> > > + bo->placement.busy_placement = bo->placements;
> > > +
> > > + if (domain & TTM_PL_FLAG_VRAM)
> > > + bo->placements[c++].flags =
> > > + TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM;
> > > + if (domain & TTM_PL_FLAG_SYSTEM)
> > > + bo->placements[c++].flags =
> > > + TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
> > > + if (!c)
> > > + bo->placements[c++].flags =
> > > + TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
> > > +
> > > + bo->placement.num_placement = c;
> > > + bo->placement.num_busy_placement = c;
> > > +
> > > + for (i = 0; i < c; ++i) {
> > > + bo->placements[i].fpfn = 0;
> > > + bo->placements[i].lpfn = 0;
> > > + }
> > > +}
> > > +
> > > +int vbox_bo_create(struct drm_device *dev, int size, int align,
> > > + u32 flags, struct vbox_bo **pvboxbo)
> > > +{
> > > + struct vbox_private *vbox = dev->dev_private;
> > > + struct vbox_bo *vboxbo;
> > > + size_t acc_size;
> > > + int ret;
> > > +
> > > + vboxbo = kzalloc(sizeof(*vboxbo), GFP_KERNEL);
> > > + if (!vboxbo)
> > > + return -ENOMEM;
> > > +
> > > + ret = drm_gem_object_init(dev, &vboxbo->gem, size);
> > > + if (ret) {
> > > + kfree(vboxbo);
> > > + return ret;
> > > + }
> > > +
> > > + vboxbo->bo.bdev = &vbox->ttm.bdev;
> > > +
> > > + vbox_ttm_placement(vboxbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
> > > +
> > > + acc_size = ttm_bo_dma_acc_size(&vbox->ttm.bdev, size,
> > > + sizeof(struct vbox_bo));
> > > +
> > > + ret = ttm_bo_init(&vbox->ttm.bdev, &vboxbo->bo, size,
> > > + ttm_bo_type_device, &vboxbo->placement,
> > > + align >> PAGE_SHIFT, false, NULL, acc_size,
> > > + NULL, NULL, vbox_bo_ttm_destroy);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + *pvboxbo = vboxbo;
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static inline u64 vbox_bo_gpu_offset(struct vbox_bo *bo)
> > > +{
> > > + return bo->bo.offset;
> > > +}
> > > +
> > > +int vbox_bo_pin(struct vbox_bo *bo, u32 pl_flag, u64 *gpu_addr)
> > > +{
> > > + int i, ret;
> > > +
> > > + if (bo->pin_count) {
> > > + bo->pin_count++;
> > > + if (gpu_addr)
> > > + *gpu_addr = vbox_bo_gpu_offset(bo);
> > > +
> > > + return 0;
> > > + }
> > > +
> > > + vbox_ttm_placement(bo, pl_flag);
> > > +
> > > + for (i = 0; i < bo->placement.num_placement; i++)
> > > + bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
> > > +
> > > + ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + bo->pin_count = 1;
> > > +
> > > + if (gpu_addr)
> > > + *gpu_addr = vbox_bo_gpu_offset(bo);
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +int vbox_bo_unpin(struct vbox_bo *bo)
> > > +{
> > > + int i, ret;
> > > +
> > > + if (!bo->pin_count) {
> > > + DRM_ERROR("unpin bad %p\n", bo);
> > > + return 0;
> > > + }
> > > + bo->pin_count--;
> > > + if (bo->pin_count)
> > > + return 0;
> > > +
> > > + for (i = 0; i < bo->placement.num_placement; i++)
> > > + bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
> > > +
> > > + ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
> > > + if (ret)
> > > + return ret;
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +/*
> > > + * Move a vbox-owned buffer object to system memory if no one else has it
> > > + * pinned. The caller must have pinned it previously, and this call will
> > > + * release the caller's pin.
> > > + */
> > > +int vbox_bo_push_sysram(struct vbox_bo *bo)
> > > +{
> > > + int i, ret;
> > > +
> > > + if (!bo->pin_count) {
> > > + DRM_ERROR("unpin bad %p\n", bo);
> > > + return 0;
> > > + }
> > > + bo->pin_count--;
> > > + if (bo->pin_count)
> > > + return 0;
> > > +
> > > + if (bo->kmap.virtual)
> > > + ttm_bo_kunmap(&bo->kmap);
> > > +
> > > + vbox_ttm_placement(bo, TTM_PL_FLAG_SYSTEM);
> > > +
> > > + for (i = 0; i < bo->placement.num_placement; i++)
> > > + bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
> > > +
> > > + ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
> > > + if (ret) {
> > > + DRM_ERROR("pushing to VRAM failed\n");
> > > + return ret;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +int vbox_mmap(struct file *filp, struct vm_area_struct *vma)
> > > +{
> > > + struct drm_file *file_priv;
> > > + struct vbox_private *vbox;
> > > +
> > > + if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
> > > + return -EINVAL;
> > > +
> > > + file_priv = filp->private_data;
> > > + vbox = file_priv->minor->dev->dev_private;
> > > +
> > > + return ttm_bo_mmap(filp, vma, &vbox->ttm.bdev);
> > > +}
> > > diff --git a/drivers/staging/vboxvideo/vboxvideo.h b/drivers/staging/vboxvideo/vboxvideo.h
> > > new file mode 100644
> > > index 000000000000..d835d75d761c
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vboxvideo.h
> > > @@ -0,0 +1,491 @@
> > > +/*
> > > + * Copyright (C) 2006-2016 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the
> > > + * "Software"), to deal in the Software without restriction, including
> > > + * without limitation the rights to use, copy, modify, merge, publish,
> > > + * distribute, sub license, and/or sell copies of the Software, and to
> > > + * permit persons to whom the Software is furnished to do so, subject to
> > > + * the following conditions:
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
> > > + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
> > > + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
> > > + * USE OR OTHER DEALINGS IN THE SOFTWARE.
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + */
> > > +
> > > +#ifndef __VBOXVIDEO_H__
> > > +#define __VBOXVIDEO_H__
> > > +
> > > +/*
> > > + * This should be in sync with monitorCount <xsd:maxInclusive value="64"/> in
> > > + * src/VBox/Main/xml/VirtualBox-settings-common.xsd
> > > + */
> > > +#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
> > > + */
> > > +
> > > +/**
> > > + * VBVA command header.
> > > + *
> > > + * @todo Where does this fit in?
> > > + */
> > > +struct vbva_cmd_hdr {
> > > + /** Coordinates of affected rectangle. */
> > > + s16 x;
> > > + s16 y;
> > > + u16 w;
> > > + u16 h;
> > > +} __packed;
> > > +
> > > +/** @name VBVA ring defines.
> > > + *
> > > + * 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
> > > +
> > > +/**
> > > + * VBVA record.
> > > + */
> > > +struct vbva_record {
> > > + /** The length of the record. Changed by guest. */
> > > + 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
> > > + * vbva_conf32::VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING returns success.
> > > + * @see VMMDevReqMouseStatus::mouseFeatures.
> > > + */
> > > +#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;
> > > +
> > > +/**
> > > + * @name vbva_mouse_pointer_shape::flags
> > > + * @note The VBOX_MOUSE_POINTER_* flags are used in the guest video driver,
> > > + * values must be <= 0x8000 and must not be changed. (try make more sense
> > > + * of this, please).
> > > + * @{
> > > + */
> > > +
> > > +/** 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.
> > > + * @see VBVA_REPORT_INPUT_MAPPING.
> > > + */
> > > +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).
> > > + * @see VBVA_CURSOR_POSITION
> > > + */
> > > +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
> > > diff --git a/drivers/staging/vboxvideo/vboxvideo_guest.h b/drivers/staging/vboxvideo/vboxvideo_guest.h
> > > new file mode 100644
> > > index 000000000000..d09da841711a
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vboxvideo_guest.h
> > > @@ -0,0 +1,95 @@
> > > +/*
> > > + * Copyright (C) 2006-2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + */
> > > +
> > > +#ifndef __VBOXVIDEO_GUEST_H__
> > > +#define __VBOXVIDEO_GUEST_H__
> > > +
> > > +#include <linux/genalloc.h>
> > > +#include "vboxvideo.h"
> > > +
> > > +/**
> > > + * Structure grouping the context needed for sending graphics acceleration
> > > + * information to the host via VBVA. Each screen has its own VBVA buffer.
> > > + */
> > > +struct vbva_buf_ctx {
> > > + /** Offset of the buffer in the VRAM section for the screen */
> > > + u32 buffer_offset;
> > > + /** Length of the buffer in bytes */
> > > + u32 buffer_length;
> > > + /** Set if we wrote to the buffer faster than the host could read it */
> > > + bool buffer_overflow;
> > > + /** VBVA record that we are currently preparing for the host, or NULL */
> > > + struct vbva_record *record;
> > > + /**
> > > + * Pointer to the VBVA buffer mapped into the current address space.
> > > + * Will be NULL if VBVA is not enabled.
> > > + */
> > > + struct vbva_buffer *vbva;
> > > +};
> > > +
> > > +/**
> > > + * @name Base HGSMI APIs
> > > + * @{
> > > + */
> > > +int hgsmi_report_flags_location(struct gen_pool *ctx, u32 location);
> > > +int hgsmi_send_caps_info(struct gen_pool *ctx, u32 caps);
> > > +int hgsmi_test_query_conf(struct gen_pool *ctx);
> > > +int hgsmi_query_conf(struct gen_pool *ctx, u32 index, u32 *value_ret);
> > > +int hgsmi_update_pointer_shape(struct gen_pool *ctx, u32 flags,
> > > + u32 hot_x, u32 hot_y, u32 width, u32 height,
> > > + u8 *pixels, u32 len);
> > > +int hgsmi_cursor_position(struct gen_pool *ctx, bool report_position,
> > > + u32 x, u32 y, u32 *x_host, u32 *y_host);
> > > +/** @} */
> > > +
> > > +/**
> > > + * @name VBVA APIs
> > > + * @{
> > > + */
> > > +bool vbva_enable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
> > > + struct vbva_buffer *vbva, s32 screen);
> > > +void vbva_disable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
> > > + s32 screen);
> > > +bool vbva_buffer_begin_update(struct vbva_buf_ctx *vbva_ctx,
> > > + struct gen_pool *ctx);
> > > +void vbva_buffer_end_update(struct vbva_buf_ctx *vbva_ctx);
> > > +bool vbva_write(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
> > > + const void *p, u32 len);
> > > +void vbva_setup_buffer_context(struct vbva_buf_ctx *vbva_ctx,
> > > + u32 buffer_offset, u32 buffer_length);
> > > +/** @} */
> > > +
> > > +/**
> > > + * @name Modesetting APIs
> > > + * @{
> > > + */
> > > +void hgsmi_process_display_info(struct gen_pool *ctx, u32 display,
> > > + s32 origin_x, s32 origin_y, u32 start_offset,
> > > + u32 pitch, u32 width, u32 height,
> > > + u16 bpp, u16 flags);
> > > +int hgsmi_update_input_mapping(struct gen_pool *ctx, s32 origin_x, s32 origin_y,
> > > + u32 width, u32 height);
> > > +int hgsmi_get_mode_hints(struct gen_pool *ctx, unsigned int screens,
> > > + struct vbva_modehint *hints);
> > > +/** @} */
> > > +
> > > +#endif
> > > diff --git a/drivers/staging/vboxvideo/vboxvideo_vbe.h b/drivers/staging/vboxvideo/vboxvideo_vbe.h
> > > new file mode 100644
> > > index 000000000000..f842f4d9c80a
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vboxvideo_vbe.h
> > > @@ -0,0 +1,84 @@
> > > +/*
> > > + * Copyright (C) 2006-2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + */
> > > +
> > > +#ifndef __VBOXVIDEO_VBE_H__
> > > +#define __VBOXVIDEO_VBE_H__
> > > +
> > > +/* GUEST <-> HOST Communication API */
> > > +
> > > +/**
> > > + * @todo FIXME: Either dynamicly ask host for this or put somewhere high in
> > > + * physical memory like 0xE0000000.
> > > + */
> > > +
> > > +#define VBE_DISPI_BANK_ADDRESS 0xA0000
> > > +#define VBE_DISPI_BANK_SIZE_KB 64
> > > +
> > > +#define VBE_DISPI_MAX_XRES 16384
> > > +#define VBE_DISPI_MAX_YRES 16384
> > > +#define VBE_DISPI_MAX_BPP 32
> > > +
> > > +#define VBE_DISPI_IOPORT_INDEX 0x01CE
> > > +#define VBE_DISPI_IOPORT_DATA 0x01CF
> > > +
> > > +#define VBE_DISPI_IOPORT_DAC_WRITE_INDEX 0x03C8
> > > +#define VBE_DISPI_IOPORT_DAC_DATA 0x03C9
> > > +
> > > +#define VBE_DISPI_INDEX_ID 0x0
> > > +#define VBE_DISPI_INDEX_XRES 0x1
> > > +#define VBE_DISPI_INDEX_YRES 0x2
> > > +#define VBE_DISPI_INDEX_BPP 0x3
> > > +#define VBE_DISPI_INDEX_ENABLE 0x4
> > > +#define VBE_DISPI_INDEX_BANK 0x5
> > > +#define VBE_DISPI_INDEX_VIRT_WIDTH 0x6
> > > +#define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7
> > > +#define VBE_DISPI_INDEX_X_OFFSET 0x8
> > > +#define VBE_DISPI_INDEX_Y_OFFSET 0x9
> > > +#define VBE_DISPI_INDEX_VBOX_VIDEO 0xa
> > > +#define VBE_DISPI_INDEX_FB_BASE_HI 0xb
> > > +
> > > +#define VBE_DISPI_ID0 0xB0C0
> > > +#define VBE_DISPI_ID1 0xB0C1
> > > +#define VBE_DISPI_ID2 0xB0C2
> > > +#define VBE_DISPI_ID3 0xB0C3
> > > +#define VBE_DISPI_ID4 0xB0C4
> > > +
> > > +#define VBE_DISPI_ID_VBOX_VIDEO 0xBE00
> > > +/* The VBOX interface id. Indicates support for VBVA shared memory interface. */
> > > +#define VBE_DISPI_ID_HGSMI 0xBE01
> > > +#define VBE_DISPI_ID_ANYX 0xBE02
> > > +
> > > +#define VBE_DISPI_DISABLED 0x00
> > > +#define VBE_DISPI_ENABLED 0x01
> > > +#define VBE_DISPI_GETCAPS 0x02
> > > +#define VBE_DISPI_8BIT_DAC 0x20
> > > +/**
> > > + * @note this definition is a BOCHS legacy, used only in the video BIOS
> > > + * code and ignored by the emulated hardware.
> > > + */
> > > +#define VBE_DISPI_LFB_ENABLED 0x40
> > > +#define VBE_DISPI_NOCLEARMEM 0x80
> > > +
> > > +#define VGA_PORT_HGSMI_HOST 0x3b0
> > > +#define VGA_PORT_HGSMI_GUEST 0x3d0
> > > +
> > > +#endif
> > > diff --git a/drivers/staging/vboxvideo/vbva_base.c b/drivers/staging/vboxvideo/vbva_base.c
> > > new file mode 100644
> > > index 000000000000..c10c782f94e1
> > > --- /dev/null
> > > +++ b/drivers/staging/vboxvideo/vbva_base.c
> > > @@ -0,0 +1,233 @@
> > > +/*
> > > + * Copyright (C) 2006-2017 Oracle Corporation
> > > + *
> > > + * Permission is hereby granted, free of charge, to any person obtaining a
> > > + * copy of this software and associated documentation files (the "Software"),
> > > + * to deal in the Software without restriction, including without limitation
> > > + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> > > + * and/or sell copies of the Software, and to permit persons to whom the
> > > + * Software is furnished to do so, subject to the following conditions:
> > > + *
> > > + * The above copyright notice and this permission notice shall be included in
> > > + * all copies or substantial portions of the Software.
> > > + *
> > > + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> > > + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> > > + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> > > + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> > > + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> > > + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> > > + * OTHER DEALINGS IN THE SOFTWARE.
> > > + */
> > > +
> > > +#include "vbox_drv.h"
> > > +#include "vbox_err.h"
> > > +#include "vboxvideo_guest.h"
> > > +#include "hgsmi_channels.h"
> > > +
> > > +/*
> > > + * There is a hardware ring buffer in the graphics device video RAM, formerly
> > > + * in the VBox VMMDev PCI memory space.
> > > + * All graphics commands go there serialized by vbva_buffer_begin_update.
> > > + * and vbva_buffer_end_update.
> > > + *
> > > + * free_offset is writing position. data_offset is reading position.
> > > + * free_offset == data_offset means buffer is empty.
> > > + * There must be always gap between data_offset and free_offset when data
> > > + * are in the buffer.
> > > + * Guest only changes free_offset, host changes data_offset.
> > > + */
> > > +
> > > +static u32 vbva_buffer_available(const struct vbva_buffer *vbva)
> > > +{
> > > + s32 diff = vbva->data_offset - vbva->free_offset;
> > > +
> > > + return diff > 0 ? diff : vbva->data_len + diff;
> > > +}
> > > +
> > > +static void vbva_buffer_place_data_at(struct vbva_buf_ctx *vbva_ctx,
> > > + const void *p, u32 len, u32 offset)
> > > +{
> > > + struct vbva_buffer *vbva = vbva_ctx->vbva;
> > > + u32 bytes_till_boundary = vbva->data_len - offset;
> > > + u8 *dst = &vbva->data[offset];
> > > + s32 diff = len - bytes_till_boundary;
> > > +
> > > + if (diff <= 0) {
> > > + /* Chunk will not cross buffer boundary. */
> > > + memcpy(dst, p, len);
> > > + } else {
> > > + /* Chunk crosses buffer boundary. */
> > > + memcpy(dst, p, bytes_till_boundary);
> > > + memcpy(&vbva->data[0], (u8 *)p + bytes_till_boundary, diff);
> > > + }
> > > +}
> > > +
> > > +static void vbva_buffer_flush(struct gen_pool *ctx)
> > > +{
> > > + struct vbva_flush *p;
> > > +
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA, VBVA_FLUSH);
> > > + if (!p)
> > > + return;
> > > +
> > > + p->reserved = 0;
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > + hgsmi_buffer_free(ctx, p);
> > > +}
> > > +
> > > +bool vbva_write(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
> > > + const void *p, u32 len)
> > > +{
> > > + struct vbva_record *record;
> > > + struct vbva_buffer *vbva;
> > > + u32 available;
> > > +
> > > + vbva = vbva_ctx->vbva;
> > > + record = vbva_ctx->record;
> > > +
> > > + if (!vbva || vbva_ctx->buffer_overflow ||
> > > + !record || !(record->len_and_flags & VBVA_F_RECORD_PARTIAL))
> > > + return false;
> > > +
> > > + available = vbva_buffer_available(vbva);
> > > +
> > > + while (len > 0) {
> > > + u32 chunk = len;
> > > +
> > > + if (chunk >= available) {
> > > + vbva_buffer_flush(ctx);
> > > + available = vbva_buffer_available(vbva);
> > > + }
> > > +
> > > + if (chunk >= available) {
> > > + if (WARN_ON(available <= vbva->partial_write_tresh)) {
> > > + vbva_ctx->buffer_overflow = true;
> > > + return false;
> > > + }
> > > + chunk = available - vbva->partial_write_tresh;
> > > + }
> > > +
> > > + vbva_buffer_place_data_at(vbva_ctx, p, chunk,
> > > + vbva->free_offset);
> > > +
> > > + vbva->free_offset = (vbva->free_offset + chunk) %
> > > + vbva->data_len;
> > > + record->len_and_flags += chunk;
> > > + available -= chunk;
> > > + len -= chunk;
> > > + p += chunk;
> > > + }
> > > +
> > > + return true;
> > > +}
> > > +
> > > +static bool vbva_inform_host(struct vbva_buf_ctx *vbva_ctx,
> > > + struct gen_pool *ctx, s32 screen, bool enable)
> > > +{
> > > + struct vbva_enable_ex *p;
> > > + bool ret;
> > > +
> > > + p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA, VBVA_ENABLE);
> > > + if (!p)
> > > + return false;
> > > +
> > > + p->base.flags = enable ? VBVA_F_ENABLE : VBVA_F_DISABLE;
> > > + p->base.offset = vbva_ctx->buffer_offset;
> > > + p->base.result = VERR_NOT_SUPPORTED;
> > > + if (screen >= 0) {
> > > + p->base.flags |= VBVA_F_EXTENDED | VBVA_F_ABSOFFSET;
> > > + p->screen_id = screen;
> > > + }
> > > +
> > > + hgsmi_buffer_submit(ctx, p);
> > > +
> > > + if (enable)
> > > + ret = RT_SUCCESS(p->base.result);
> > > + else
> > > + ret = true;
> > > +
> > > + hgsmi_buffer_free(ctx, p);
> > > +
> > > + return ret;
> > > +}
> > > +
> > > +bool vbva_enable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
> > > + struct vbva_buffer *vbva, s32 screen)
> > > +{
> > > + bool ret = false;
> > > +
> > > + memset(vbva, 0, sizeof(*vbva));
> > > + vbva->partial_write_tresh = 256;
> > > + vbva->data_len = vbva_ctx->buffer_length - sizeof(struct vbva_buffer);
> > > + vbva_ctx->vbva = vbva;
> > > +
> > > + ret = vbva_inform_host(vbva_ctx, ctx, screen, true);
> > > + if (!ret)
> > > + vbva_disable(vbva_ctx, ctx, screen);
> > > +
> > > + return ret;
> > > +}
> > > +
> > > +void vbva_disable(struct vbva_buf_ctx *vbva_ctx, struct gen_pool *ctx,
> > > + s32 screen)
> > > +{
> > > + vbva_ctx->buffer_overflow = false;
> > > + vbva_ctx->record = NULL;
> > > + vbva_ctx->vbva = NULL;
> > > +
> > > + vbva_inform_host(vbva_ctx, ctx, screen, false);
> > > +}
> > > +
> > > +bool vbva_buffer_begin_update(struct vbva_buf_ctx *vbva_ctx,
> > > + struct gen_pool *ctx)
> > > +{
> > > + struct vbva_record *record;
> > > + u32 next;
> > > +
> > > + if (!vbva_ctx->vbva ||
> > > + !(vbva_ctx->vbva->host_flags.host_events & VBVA_F_MODE_ENABLED))
> > > + return false;
> > > +
> > > + WARN_ON(vbva_ctx->buffer_overflow || vbva_ctx->record);
> > > +
> > > + next = (vbva_ctx->vbva->record_free_index + 1) % VBVA_MAX_RECORDS;
> > > +
> > > + /* Flush if all slots in the records queue are used */
> > > + if (next == vbva_ctx->vbva->record_first_index)
> > > + vbva_buffer_flush(ctx);
> > > +
> > > + /* If even after flush there is no place then fail the request */
> > > + if (next == vbva_ctx->vbva->record_first_index)
> > > + return false;
> > > +
> > > + record = &vbva_ctx->vbva->records[vbva_ctx->vbva->record_free_index];
> > > + record->len_and_flags = VBVA_F_RECORD_PARTIAL;
> > > + vbva_ctx->vbva->record_free_index = next;
> > > + /* Remember which record we are using. */
> > > + vbva_ctx->record = record;
> > > +
> > > + return true;
> > > +}
> > > +
> > > +void vbva_buffer_end_update(struct vbva_buf_ctx *vbva_ctx)
> > > +{
> > > + struct vbva_record *record = vbva_ctx->record;
> > > +
> > > + WARN_ON(!vbva_ctx->vbva || !record ||
> > > + !(record->len_and_flags & VBVA_F_RECORD_PARTIAL));
> > > +
> > > + /* Mark the record completed. */
> > > + record->len_and_flags &= ~VBVA_F_RECORD_PARTIAL;
> > > +
> > > + vbva_ctx->buffer_overflow = false;
> > > + vbva_ctx->record = NULL;
> > > +}
> > > +
> > > +void vbva_setup_buffer_context(struct vbva_buf_ctx *vbva_ctx,
> > > + u32 buffer_offset, u32 buffer_length)
> > > +{
> > > + vbva_ctx->buffer_offset = buffer_offset;
> > > + vbva_ctx->buffer_length = buffer_length;
> > > +}
> > > --
> > > 2.13.0
> > >
> > > _______________________________________________
> > > dri-devel mailing list
> > > dri-devel@xxxxxxxxxxxxxxxxxxxxx
> > > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> >
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
