WIP: host-side virtio-9p mock device

gistfile1.diff

Index: usr.sbin/bhyve/Makefile
===================================================================
--- usr.sbin/bhyve/Makefile	(revision 238860)
+++ usr.sbin/bhyve/Makefile	(working copy)
@@ -8,6 +8,7 @@
 SRCS+=  instruction_emul.c mevent.c
 SRCS+=	pci_emul.c pci_hostbridge.c pci_passthru.c pci_virtio_block.c
 SRCS+=	pci_virtio_net.c pci_uart.c pit_8254.c post.c rtc.c uart.c xmsr.c
+SRCS+= pci_virtio_9p.c
 
 NO_MAN=
 
Index: usr.sbin/bhyve/pci_virtio_9p.c
===================================================================
--- usr.sbin/bhyve/pci_virtio_9p.c	(revision 0)
+++ usr.sbin/bhyve/pci_virtio_9p.c	(working copy)
@@ -0,0 +1,98 @@
+/*-
+ * Copyright (c) 2011 NetApp, 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 NETAPP, INC ``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 NETAPP, INC 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/linker_set.h>
+#include <sys/stat.h>
+#include <sys/uio.h>
+#include <sys/ioctl.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <strings.h>
+#include <unistd.h>
+#include <assert.h>
+#include <pthread.h>
+
+#include "fbsdrun.h"
+#include "pci_emul.h"
+#include "virtio.h"
+
+static int
+pci_vt9p_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts)
+{
+	printf("%u %s : opts = %s\n", __LINE__, __func__, opts);
+
+	/* initialize config space */
+	pci_set_cfgdata16(pi, PCIR_DEVICE, VIRTIO_DEV_9P);
+	pci_set_cfgdata16(pi, PCIR_VENDOR, VIRTIO_VENDOR);
+	pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_STORAGE);
+	pci_set_cfgdata16(pi, PCIR_SUBDEV_0, VIRTIO_TYPE_9P);
+	pci_emul_alloc_bar(pi, 0, 0, PCIBAR_IO, 10);
+
+	return 0;
+}
+
+static void
+pci_vt9p_write(struct pci_devinst *pi, int baridx, 
+		int offset, int size, uint32_t value) 
+{
+	printf("%u %s : baridx=%d, offset=%d, size=%d, value=%u\n",
+			__LINE__, __func__,
+			baridx,
+			offset,
+			size,
+			value);
+}
+
+static uint32_t
+pci_vt9p_read(struct pci_devinst *pi, int baridx, int offset, int size)
+{
+	printf("%u %s : baridx=%d, offset=%d, size=%d\n",
+			__LINE__, __func__,
+			baridx,
+			offset,
+			size);
+	return 0;
+}
+
+struct pci_devemu pci_de_9p = {
+	.pe_emu = "virtio-9p",
+	.pe_init = pci_vt9p_init,
+	.pe_iow = pci_vt9p_write,
+	.pe_ior = pci_vt9p_read,
+};
+
+PCI_EMUL_SET(pci_de_9p);
Index: usr.sbin/bhyve/virtio.h
===================================================================
--- usr.sbin/bhyve/virtio.h	(revision 238860)
+++ usr.sbin/bhyve/virtio.h	(working copy)
@@ -59,6 +59,7 @@
  */
 #define VIRTIO_TYPE_NET		1
 #define VIRTIO_TYPE_BLOCK	2
+#define VIRTIO_TYPE_9P		9
 
 /*
  * PCI vendor/device IDs
@@ -66,6 +67,7 @@
 #define VIRTIO_VENDOR		0x1AF4
 #define VIRTIO_DEV_NET		0x1000
 #define VIRTIO_DEV_BLOCK	0x1001
+#define VIRTIO_DEV_9P		0x1009
 
 /*
  * PCI config space constants