1 files changed, 89 insertions, 0 deletions
diff --git a/include/usb_ether.h b/include/usb_ether.h
new file mode 100644
index 00000000000..18d7184711b
--- /dev/null
+++ b/include/usb_ether.h
@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ */
+
+#ifndef __USB_ETHER_H__
+#define __USB_ETHER_H__
+
+#include <net.h>
+
+/* TODO(sjg@chromium.org): Remove @pusb_dev now that all boards use CONFIG_DM_ETH */
+struct ueth_data {
+	/* eth info */
+	uint8_t *rxbuf;
+	int rxsize;
+	int rxlen;			/* Total bytes available in rxbuf */
+	int rxptr;			/* Current position in rxbuf */
+	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 */
+};
+
+/**
+ * usb_ether_register() - register a new USB ethernet device
+ *
+ * This selects the correct USB interface and figures out the endpoints to use.
+ *
+ * @dev:	USB device
+ * @ss:		Place to put USB ethernet data
+ * @rxsize:	Maximum size to allocate for the receive buffer
+ * Return: 0 if OK, -ve on error
+ */
+int usb_ether_register(struct udevice *dev, struct ueth_data *ueth, int rxsize);
+
+/**
+ * usb_ether_deregister() - deregister a USB ethernet device
+ *
+ * @ueth:	USB Ethernet device
+ * Return: 0
+ */
+int usb_ether_deregister(struct ueth_data *ueth);
+
+/**
+ * usb_ether_receive() - recieve a packet from the bulk in endpoint
+ *
+ * The packet is stored in the internal buffer ready for processing.
+ *
+ * @ueth:	USB Ethernet device
+ * @rxsize:	Maximum size to receive
+ * Return: 0 if a packet was received, -EAGAIN if not, -ENOSPC if @rxsize is
+ * larger than the size passed ot usb_ether_register(), other -ve on error
+ */
+int usb_ether_receive(struct ueth_data *ueth, int rxsize);
+
+/**
+ * usb_ether_get_rx_bytes() - obtain bytes from the internal packet buffer
+ *
+ * This should be called repeatedly to obtain packet data until it returns 0.
+ * After each packet is processed, call usb_ether_advance_rxbuf() to move to
+ * the next one.
+ *
+ * @ueth:	USB Ethernet device
+ * @ptrp:	Returns a pointer to the start of the next packet if there is
+ *		one available
+ * Return: number of bytes available, or 0 if none
+ */
+int usb_ether_get_rx_bytes(struct ueth_data *ueth, uint8_t **ptrp);
+
+/**
+ * usb_ether_advance_rxbuf() - Advance to the next packet in the internal buffer
+ *
+ * After processing the data returned by usb_ether_get_rx_bytes(), call this
+ * function to move to the next packet. You must specify the number of bytes
+ * you have processed in @num_bytes.
+ *
+ * @ueth:	USB Ethernet device
+ * @num_bytes:	Number of bytes to skip, or -1 to skip all bytes
+ */
+void usb_ether_advance_rxbuf(struct ueth_data *ueth, int num_bytes);
+
+#endif /* __USB_ETHER_H__ */