Add USB host ethernet adapter support

This adds support for using USB Ethernet dongles in host mode. This is just
the framework - drivers will come later. A new config option called
CONFIG_USB_HOST_ETHER can be defined in board config files to switch this
on.

The was originally written by NVIDIA and was cleaned up for release by the
Chromium authors.

Signed-off-by: Simon Glass <sjg@chromium.org>

2 files changed, 69 insertions, 1 deletions

diff --git a/include/usb.h b/include/usb.h
index 98576b73a..53603a558 100644
--- a/include/usb.h
+++ b/include/usb.h
@@ -168,6 +168,13 @@ int usb_stor_info(void);
 
 #endif
 
+#ifdef CONFIG_USB_HOST_ETHER
+
+#define USB_MAX_ETH_DEV 5
+int usb_host_eth_scan(int mode);
+
+#endif
+
 #ifdef CONFIG_USB_KEYBOARD
 
 int drv_usb_kbd_init(void);
@@ -191,7 +198,7 @@ int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
 			void *data, int len, int *actual_length, int timeout);
 int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
 			void *buffer, int transfer_len, int interval);
-void usb_disable_asynch(int disable);
+int usb_disable_asynch(int disable);
 int usb_maxpacket(struct usb_device *dev, unsigned long pipe);
 inline void wait_ms(unsigned long ms);
 int usb_get_configuration_no(struct usb_device *dev, unsigned char *buffer,
diff --git a/include/usb_ether.h b/include/usb_ether.h
new file mode 100644
index 000000000..31cbc8d58
--- /dev/null
+++ b/include/usb_ether.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __USB_ETHER_H__
+#define __USB_ETHER_H__
+
+#include <net.h>
+
+/*
+ *	IEEE 802.3 Ethernet magic constants.  The frame sizes omit the preamble
+ *	and FCS/CRC (frame check sequence).
+ */
+#define ETH_ALEN	6		/* Octets in one ethernet addr	 */
+#define ETH_HLEN	14		/* Total octets in header.	 */
+#define ETH_ZLEN	60		/* Min. octets in frame sans FCS */
+#define ETH_DATA_LEN	1500		/* Max. octets in payload	 */
+#define ETH_FRAME_LEN	PKTSIZE_ALIGN	/* Max. octets in frame sans FCS */
+#define ETH_FCS_LEN	4		/* Octets in the FCS		 */
+
+struct ueth_data {
+	/* eth info */
+	struct eth_device eth_dev;		/* used with eth_register */
+	int phy_id;						/* mii phy id */
+
+	/* usb info */
+	struct usb_device *pusb_dev;	/* this usb_device */
+	unsigned char	ifnum;			/* interface number */
+	unsigned char	ep_in;			/* in endpoint */
+	unsigned char	ep_out;			/* out ....... */
+	unsigned char	ep_int;			/* interrupt . */
+	unsigned char	subclass;		/* as in overview */
+	unsigned char	protocol;		/* .............. */
+	unsigned char	irqinterval;	/* Intervall for IRQ Pipe */
+
+	/* private fields for each driver can go here if needed */
+};
+
+/*
+ * Function definitions for each USB ethernet driver go here, bracketed by
+ * #ifdef CONFIG_USB_ETHER_xxx...#endif
+ */
+
+#endif /* __USB_ETHER_H__ */