package/linux/kernel-source/include/bcmenetrxh.h

   1 /*
   2  * Hardware-specific Receive Data Header for the
   3  * Broadcom Home Networking Division
   4  * BCM44XX and BCM47XX 10/100 Mbps Ethernet cores.
   5  *
   6  * Copyright 2004, Broadcom Corporation
   7  * All Rights Reserved.
   8  *
   9  * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
  10  * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
  11  * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
  12  * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
  13  * $Id$
  14  */
  15
  16 #ifndef _bcmenetrxh_h_
  17 #define _bcmenetrxh_h_
  18
  19 /*
  20  * The Ethernet MAC core returns an 8-byte Receive Frame Data Header
  21  * with every frame consisting of
  22  * 16bits of frame length, followed by
  23  * 16bits of EMAC rx descriptor info, followed by 32bits of undefined.
  24  */
  25 typedef volatile struct {
  26         uint16  len;
  27         uint16  flags;
  28         uint16  pad[12];
  29 } bcmenetrxh_t;
  30
  31 #define RXHDR_LEN       28
  32
  33 #define RXF_L           ((uint16)1 << 11)       /* last buffer in a frame */
  34 #define RXF_MISS        ((uint16)1 << 7)        /* received due to promisc mode */
  35 #define RXF_BRDCAST     ((uint16)1 << 6)        /* dest is broadcast address */
  36 #define RXF_MULT        ((uint16)1 << 5)        /* dest is multicast address */
  37 #define RXF_LG          ((uint16)1 << 4)        /* frame length > rxmaxlength */
  38 #define RXF_NO          ((uint16)1 << 3)        /* odd number of nibbles */
  39 #define RXF_RXER        ((uint16)1 << 2)        /* receive symbol error */
  40 #define RXF_CRC         ((uint16)1 << 1)        /* crc error */
  41 #define RXF_OV          ((uint16)1 << 0)        /* fifo overflow */
  42
  43 #endif  /* _bcmenetrxh_h_ */