freebsd-skq/usr.sbin/bhyve/usb_emul.c
Peter Grehan 2cf9911fc1 Import bhyve_graphics into CURRENT. Thanks to all who tested
this on the branch.

Original commit message:
  Initial bhyve native graphics support.

  This adds emulations for a raw framebuffer device, PS2 keyboard/mouse,
  XHCI USB controller and a USB tablet.

  A simple VNC server is provided for keyboard/mouse input, and graphics
  output.

  A VGA emulation is included, but is currently disconnected until an
  additional bhyve change to block out VGA memory is committed.

  Credits:
   - raw framebuffer, VNC server, XHCI controller, USB bus/device emulation
      and UEFI f/w support by Leon Dang
   - VGA, console/g, initial VNC server  by tychon@
   - PS2 keyboard/mouse jointly done by tychon@ and Leon Dang
   - hypervisor framebuffer mem support by neel@

  Tested by: Michael Dexter, in a number of revisions of this code.

  With the appropriate UEFI image, FreeBSD, Windows and Linux guests can
  installed and run in graphics mode using the UEFI/GOP framebuffer.

Approved by:	re (gjb)
2016-07-04 03:19:06 +00:00

77 lines
2.2 KiB
C

/*-
* Copyright (c) 2014 Nahanni Systems Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/queue.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include "usb_emul.h"
SET_DECLARE(usb_emu_set, struct usb_devemu);
struct usb_devemu *
usb_emu_finddev(char *name)
{
struct usb_devemu **udpp, *udp;
SET_FOREACH(udpp, usb_emu_set) {
udp = *udpp;
if (!strcmp(udp->ue_emu, name))
return (udp);
}
return (NULL);
}
struct usb_data_xfer_block *
usb_data_xfer_append(struct usb_data_xfer *xfer, void *buf, int blen,
void *hci_data, int ccs)
{
struct usb_data_xfer_block *xb;
if (xfer->ndata >= USB_MAX_XFER_BLOCKS)
return (NULL);
xb = &xfer->data[xfer->tail];
xb->buf = buf;
xb->blen = blen;
xb->hci_data = hci_data;
xb->ccs = ccs;
xb->processed = 0;
xb->bdone = 0;
xfer->ndata++;
xfer->tail = (xfer->tail + 1) % USB_MAX_XFER_BLOCKS;
return (xb);
}