Provide a very basic stub for the 8042 PS/2 keyboard controller.

Reviewed by:	jhb
Approved by:	neel (co-mentor)

3 files changed, 86 insertions, 4 deletions

diff --git a/usr.sbin/bhyve/Makefile b/usr.sbin/bhyve/Makefile
index d6682fb..c73cb3d 100644
--- a/usr.sbin/bhyve/Makefile
+++ b/usr.sbin/bhyve/Makefile
@@ -9,6 +9,7 @@ DEBUG_FLAGS= -g -O0
 MAN=	bhyve.8
 
 SRCS=	\
+	atkbdc.c		\
 	acpi.c			\
 	bhyverun.c		\
 	block_if.c		\
diff --git a/usr.sbin/bhyve/atkbdc.c b/usr.sbin/bhyve/atkbdc.c
new file mode 100644
index 0000000..1b7d66c
--- /dev/null
+++ b/usr.sbin/bhyve/atkbdc.c
@@ -0,0 +1,85 @@
+/*-
+ * Copyright (c) 2014 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com>
+ * 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 ``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 <machine/vmm.h>
+
+#include <stdio.h>
+
+#include "inout.h"
+#include "pci_lpc.h"
+
+#define	KBD_DATA_PORT		0x60
+
+#define	KBD_STS_CTL_PORT	0x64
+#define	 KDB_SYS_FLAG		0x4
+
+#define	KBDC_RESET		0xfe
+
+static int
+atkbdc_data_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
+    uint32_t *eax, void *arg)
+{
+	if (bytes != 1)
+		return (INOUT_ERROR);
+
+	*eax = 0;
+
+	return (INOUT_OK);
+}
+
+static int
+atkbdc_sts_ctl_handler(struct vmctx *ctx, int vcpu, int in, int port,
+    int bytes, uint32_t *eax, void *arg)
+{
+	int retval;
+
+	if (bytes != 1)
+		return (INOUT_ERROR);
+
+	retval = INOUT_OK;
+	if (in) {
+		*eax = KDB_SYS_FLAG;	/* system passed POST */
+	} else {
+		switch (*eax) {
+		case KBDC_RESET:	/* Pulse "reset" line. */
+			retval = INOUT_RESET;
+			break;
+		}
+	}
+
+	return (retval);
+}
+
+INOUT_PORT(atkdbc, KBD_DATA_PORT, IOPORT_F_INOUT, atkbdc_data_handler);
+SYSRES_IO(KBD_DATA_PORT, 1);
+INOUT_PORT(atkbdc, KBD_STS_CTL_PORT,  IOPORT_F_INOUT,
+    atkbdc_sts_ctl_handler);
+SYSRES_IO(KBD_STS_CTL_PORT, 1);
diff --git a/usr.sbin/bhyve/bhyverun.c b/usr.sbin/bhyve/bhyverun.c
index 6aac50e..e8010e6 100644
--- a/usr.sbin/bhyve/bhyverun.c
+++ b/usr.sbin/bhyve/bhyverun.c
@@ -281,10 +281,6 @@ vmexit_inout(struct vmctx *ctx, struct vm_exit *vme, int *pvcpu)
 	if (vme->u.inout.string || vme->u.inout.rep)
 		return (VMEXIT_ABORT);
 
-	/* Special case of guest reset */
-	if (out && port == 0x64 && (uint8_t)eax == 0xFE)
-		return (vmexit_catch_reset());
-
         /* Extra-special case of host notifications */
         if (out && port == GUEST_NIO_PORT)
                 return (vmexit_handle_notify(ctx, vme, pvcpu, eax));