include/usb_ether.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright (c) 2011 The Chromium OS Authors.
   4  */
   5
   6 #ifndef __USB_ETHER_H__
   7 #define __USB_ETHER_H__
   8
   9 #include <net.h>
  10
  11 /* TODO(sjg@chromium.org): Remove @pusb_dev when all boards use CONFIG_DM_ETH */
  12 struct ueth_data {
  13         /* eth info */
  14 #ifdef CONFIG_DM_ETH
  15         uint8_t *rxbuf;
  16         int rxsize;
  17         int rxlen;                      /* Total bytes available in rxbuf */
  18         int rxptr;                      /* Current position in rxbuf */
  19 #else
  20         struct eth_device eth_dev;      /* used with eth_register */
  21         /* driver private */
  22         void *dev_priv;
  23 #endif
  24         int phy_id;                     /* mii phy id */
  25
  26         /* usb info */
  27         struct usb_device *pusb_dev;    /* this usb_device */
  28         unsigned char   ifnum;          /* interface number */
  29         unsigned char   ep_in;          /* in endpoint */
  30         unsigned char   ep_out;         /* out ....... */
  31         unsigned char   ep_int;         /* interrupt . */
  32         unsigned char   subclass;       /* as in overview */
  33         unsigned char   protocol;       /* .............. */
  34         unsigned char   irqinterval;    /* Intervall for IRQ Pipe */
  35 };
  36
  37 #ifdef CONFIG_DM_ETH
  38 /**
  39  * usb_ether_register() - register a new USB ethernet device
  40  *
  41  * This selects the correct USB interface and figures out the endpoints to use.
  42  *
  43  * @dev:        USB device
  44  * @ss:         Place to put USB ethernet data
  45  * @rxsize:     Maximum size to allocate for the receive buffer
  46  * @return 0 if OK, -ve on error
  47  */
  48 int usb_ether_register(struct udevice *dev, struct ueth_data *ueth, int rxsize);
  49
  50 /**
  51  * usb_ether_deregister() - deregister a USB ethernet device
  52  *
  53  * @ueth:       USB Ethernet device
  54  * @return 0
  55  */
  56 int usb_ether_deregister(struct ueth_data *ueth);
  57
  58 /**
  59  * usb_ether_receive() - recieve a packet from the bulk in endpoint
  60  *
  61  * The packet is stored in the internal buffer ready for processing.
  62  *
  63  * @ueth:       USB Ethernet device
  64  * @rxsize:     Maximum size to receive
  65  * @return 0 if a packet was received, -EAGAIN if not, -ENOSPC if @rxsize is
  66  * larger than the size passed ot usb_ether_register(), other -ve on error
  67  */
  68 int usb_ether_receive(struct ueth_data *ueth, int rxsize);
  69
  70 /**
  71  * usb_ether_get_rx_bytes() - obtain bytes from the internal packet buffer
  72  *
  73  * This should be called repeatedly to obtain packet data until it returns 0.
  74  * After each packet is processed, call usb_ether_advance_rxbuf() to move to
  75  * the next one.
  76  *
  77  * @ueth:       USB Ethernet device
  78  * @ptrp:       Returns a pointer to the start of the next packet if there is
  79  *              one available
  80  * @return number of bytes available, or 0 if none
  81  */
  82 int usb_ether_get_rx_bytes(struct ueth_data *ueth, uint8_t **ptrp);
  83
  84 /**
  85  * usb_ether_advance_rxbuf() - Advance to the next packet in the internal buffer
  86  *
  87  * After processing the data returned by usb_ether_get_rx_bytes(), call this
  88  * function to move to the next packet. You must specify the number of bytes
  89  * you have processed in @num_bytes.
  90  *
  91  * @ueth:       USB Ethernet device
  92  * @num_bytes:  Number of bytes to skip, or -1 to skip all bytes
  93  */
  94 void usb_ether_advance_rxbuf(struct ueth_data *ueth, int num_bytes);
  95 #else
  96 /*
  97  * Function definitions for each USB ethernet driver go here
  98  * (declaration is unconditional, compilation is conditional)
  99  */
 100 void asix_eth_before_probe(void);
 101 int asix_eth_probe(struct usb_device *dev, unsigned int ifnum,
 102                       struct ueth_data *ss);
 103 int asix_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
 104                       struct eth_device *eth);
 105
 106 void ax88179_eth_before_probe(void);
 107 int ax88179_eth_probe(struct usb_device *dev, unsigned int ifnum,
 108                       struct ueth_data *ss);
 109 int ax88179_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
 110                       struct eth_device *eth);
 111
 112 void mcs7830_eth_before_probe(void);
 113 int mcs7830_eth_probe(struct usb_device *dev, unsigned int ifnum,
 114                       struct ueth_data *ss);
 115 int mcs7830_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
 116                          struct eth_device *eth);
 117
 118 void smsc95xx_eth_before_probe(void);
 119 int smsc95xx_eth_probe(struct usb_device *dev, unsigned int ifnum,
 120                         struct ueth_data *ss);
 121 int smsc95xx_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
 122                         struct eth_device *eth);
 123
 124 void r8152_eth_before_probe(void);
 125 int r8152_eth_probe(struct usb_device *dev, unsigned int ifnum,
 126                     struct ueth_data *ss);
 127 int r8152_eth_get_info(struct usb_device *dev, struct ueth_data *ss,
 128                        struct eth_device *eth);
 129 #endif
 130
 131 #endif /* __USB_ETHER_H__ */