142 lines
4.6 KiB
C
142 lines
4.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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*/
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#ifndef __USB_ETHER_H__
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#define __USB_ETHER_H__
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#include <net.h>
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/*
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* IEEE 802.3 Ethernet magic constants. The frame sizes omit the preamble
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* and FCS/CRC (frame check sequence).
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*/
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#define ETH_ALEN 6 /* Octets in one ethernet addr */
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#define ETH_HLEN 14 /* Total octets in header. */
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#define ETH_ZLEN 60 /* Min. octets in frame sans FCS */
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#define ETH_DATA_LEN 1500 /* Max. octets in payload */
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#define ETH_FRAME_LEN PKTSIZE_ALIGN /* Max. octets in frame sans FCS */
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/* TODO(sjg@chromium.org): Remove @pusb_dev when all boards use CONFIG_DM_ETH */
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struct ueth_data {
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/* eth info */
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#ifdef CONFIG_DM_ETH
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uint8_t *rxbuf;
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int rxsize;
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int rxlen; /* Total bytes available in rxbuf */
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int rxptr; /* Current position in rxbuf */
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#else
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struct eth_device eth_dev; /* used with eth_register */
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/* driver private */
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void *dev_priv;
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#endif
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int phy_id; /* mii phy id */
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/* usb info */
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struct usb_device *pusb_dev; /* this usb_device */
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unsigned char ifnum; /* interface number */
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unsigned char ep_in; /* in endpoint */
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unsigned char ep_out; /* out ....... */
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unsigned char ep_int; /* interrupt . */
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unsigned char subclass; /* as in overview */
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unsigned char protocol; /* .............. */
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unsigned char irqinterval; /* Intervall for IRQ Pipe */
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};
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#ifdef CONFIG_DM_ETH
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/**
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* usb_ether_register() - register a new USB ethernet device
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*
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* This selects the correct USB interface and figures out the endpoints to use.
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*
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* @dev: USB device
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* @ss: Place to put USB ethernet data
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* @rxsize: Maximum size to allocate for the receive buffer
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* @return 0 if OK, -ve on error
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*/
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int usb_ether_register(struct udevice *dev, struct ueth_data *ueth, int rxsize);
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/**
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* usb_ether_deregister() - deregister a USB ethernet device
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*
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* @ueth: USB Ethernet device
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* @return 0
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*/
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int usb_ether_deregister(struct ueth_data *ueth);
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/**
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* usb_ether_receive() - recieve a packet from the bulk in endpoint
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*
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* The packet is stored in the internal buffer ready for processing.
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*
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* @ueth: USB Ethernet device
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* @rxsize: Maximum size to receive
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* @return 0 if a packet was received, -EAGAIN if not, -ENOSPC if @rxsize is
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* larger than the size passed ot usb_ether_register(), other -ve on error
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*/
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int usb_ether_receive(struct ueth_data *ueth, int rxsize);
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/**
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* usb_ether_get_rx_bytes() - obtain bytes from the internal packet buffer
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*
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* This should be called repeatedly to obtain packet data until it returns 0.
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* After each packet is processed, call usb_ether_advance_rxbuf() to move to
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* the next one.
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*
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* @ueth: USB Ethernet device
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* @ptrp: Returns a pointer to the start of the next packet if there is
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* one available
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* @return number of bytes available, or 0 if none
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*/
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int usb_ether_get_rx_bytes(struct ueth_data *ueth, uint8_t **ptrp);
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/**
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* usb_ether_advance_rxbuf() - Advance to the next packet in the internal buffer
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*
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* After processing the data returned by usb_ether_get_rx_bytes(), call this
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* function to move to the next packet. You must specify the number of bytes
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* you have processed in @num_bytes.
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*
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* @ueth: USB Ethernet device
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* @num_bytes: Number of bytes to skip, or -1 to skip all bytes
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*/
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void usb_ether_advance_rxbuf(struct ueth_data *ueth, int num_bytes);
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#else
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/*
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* Function definitions for each USB ethernet driver go here
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* (declaration is unconditional, compilation is conditional)
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*/
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void asix_eth_before_probe(void);
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int asix_eth_probe(struct usb_device *dev, unsigned int ifnum,
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struct ueth_data *ss);
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int asix_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
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struct eth_device *eth);
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void ax88179_eth_before_probe(void);
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int ax88179_eth_probe(struct usb_device *dev, unsigned int ifnum,
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struct ueth_data *ss);
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int ax88179_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
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struct eth_device *eth);
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void mcs7830_eth_before_probe(void);
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int mcs7830_eth_probe(struct usb_device *dev, unsigned int ifnum,
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struct ueth_data *ss);
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int mcs7830_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
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struct eth_device *eth);
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void smsc95xx_eth_before_probe(void);
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int smsc95xx_eth_probe(struct usb_device *dev, unsigned int ifnum,
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struct ueth_data *ss);
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int smsc95xx_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
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struct eth_device *eth);
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void r8152_eth_before_probe(void);
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int r8152_eth_probe(struct usb_device *dev, unsigned int ifnum,
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struct ueth_data *ss);
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int r8152_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
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struct eth_device *eth);
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#endif
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#endif /* __USB_ETHER_H__ */
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