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)

1 files changed, 72 insertions, 0 deletions

diff --git a/usr.sbin/bhyve/bhyvegc.c b/usr.sbin/bhyve/bhyvegc.c
new file mode 100644
index 000000000000..377b05b0878f
--- /dev/null
+++ b/usr.sbin/bhyve/bhyvegc.c
@@ -0,0 +1,72 @@
+#include <sys/cdefs.h>
+
+#include <sys/types.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "bhyvegc.h"
+
+struct bhyvegc {
+	struct bhyvegc_image	*gc_image;
+	int raw;
+};
+
+struct bhyvegc *
+bhyvegc_init(int width, int height, void *fbaddr)
+{
+	struct bhyvegc *gc;
+	struct bhyvegc_image *gc_image;
+
+	gc = calloc(1, sizeof (struct bhyvegc));
+
+	gc_image = calloc(1, sizeof(struct bhyvegc_image));
+	gc_image->width = width;
+	gc_image->height = height;
+	if (fbaddr) {
+		gc_image->data = fbaddr;
+		gc->raw = 1;
+	} else {
+		gc_image->data = calloc(width * height, sizeof (uint32_t));
+		gc->raw = 0;
+	}
+
+	gc->gc_image = gc_image;
+
+	return (gc);
+}
+
+void
+bhyvegc_set_fbaddr(struct bhyvegc *gc, void *fbaddr)
+{
+	gc->raw = 1;
+	if (gc->gc_image->data && gc->gc_image->data != fbaddr)
+		free(gc->gc_image->data);
+	gc->gc_image->data = fbaddr;
+}
+
+void
+bhyvegc_resize(struct bhyvegc *gc, int width, int height)
+{
+	struct bhyvegc_image *gc_image;
+
+	gc_image = gc->gc_image;
+
+	gc_image->width = width;
+	gc_image->height = height;
+	if (!gc->raw) {
+		gc_image->data = realloc(gc_image->data,
+		    sizeof (uint32_t) * width * height);
+		memset(gc_image->data, 0, width * height * sizeof (uint32_t));
+	}
+}
+
+struct bhyvegc_image *
+bhyvegc_get_image(struct bhyvegc *gc)
+{
+	if (gc == NULL)
+		return (NULL);
+
+	return (gc->gc_image);
+}