Support for virtio-net PCI devices

Added a driver for the "virtio-net" virtualized network devices from KVM/qemu.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/board-qemu/virtio-net/module_entry.c b/board-qemu/virtio-net/module_entry.c
new file mode 100644
index 0000000..9e6ceda
--- /dev/null
+++ b/board-qemu/virtio-net/module_entry.c
@@ -0,0 +1,51 @@
+/******************************************************************************
+ * Copyright (c) 2004, 2011 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ *     IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <string.h>
+#include <netdriver_int.h>
+#include <libhvcall.h>
+#include "virtio-net.h"
+
+extern char __module_start[];
+extern char __module_end[];
+extern char __bss_start[];
+extern char __bss_end[];
+
+snk_kernel_t	*snk_kernel_interface;
+snk_module_t	*snk_module_interface;
+
+
+snk_module_t* module_init(snk_kernel_t *snk_kernel_int, pci_config_t *conf)
+{
+	long		module_size;
+
+	module_size = __module_end - __module_start;
+	if (module_size >= 0x800000) {
+		snk_kernel_int->print("Module size (%llu bytes) is too big!\n",
+				      module_size);
+		return 0;
+	}
+
+	memset(__bss_start, 0, __bss_end - __bss_start);
+
+	snk_kernel_interface = snk_kernel_int;
+	snk_module_interface = &virtionet_interface;
+	snk_module_interface->link_addr = module_init;
+
+	if (snk_kernel_int->version != snk_module_interface->version)
+		return 0;
+
+	if (vn_module_init_pci(snk_kernel_int, conf))
+		return 0;
+
+	return &virtionet_interface;
+}