staging: vboxvideo: Add vboxvideo to drivers/staging

This commit adds the vboxvideo drm/kms driver for the virtual graphics
card used in Virtual Box virtual machines to drivers/staging.

Why drivers/staging? This driver is already being patched into the kernel
by several distros, thus it is good to get this driver upstream soon, so
that work on the driver can be easily shared.

At the same time we want to take our time to get this driver properly
cleaned up (mainly converted to the new atomic modesetting APIs) before
submitting it as a normal driver under drivers/gpu/drm, putting this
driver in staging for now allows both.

Note this driver has already been significantly cleaned up, when I started
working on this the files under /usr/src/vboxguest/vboxvideo as installed
by Virtual Box 5.1.18 Guest Additions had a total linecount of 52681
lines. The version in this commit has 4874 lines.

Cc: vbox-dev@virtualbox.org
Cc: Michael Thayer <michael.thayer@oracle.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Michael Thayer <michael.thayer@oracle.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 53 insertions, 0 deletions

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