LXR linux/arch/m68k/include/asm/m68360

   1/***********************************
   2 * $Id: m68360_enet.h,v 1.1 2002/03/02 15:01:07 gerg Exp $
   3 ***********************************
   4 *
   5 ***************************************
   6 * Definitions for the ETHERNET controllers
   7 ***************************************
   8 */
   9
  10#ifndef __ETHER_H
  11#define __ETHER_H
  12
  13#include <asm/quicc_simple.h>
  14
  15/*
  16 * transmit BD's
  17 */
  18#define T_R     0x8000          /* ready bit */
  19#define E_T_PAD 0x4000          /* short frame padding */
  20#define T_W     0x2000          /* wrap bit */
  21#define T_I     0x1000          /* interrupt on completion */
  22#define T_L     0x0800          /* last in frame */
  23#define T_TC    0x0400          /* transmit CRC (when last) */
  24
  25#define T_DEF   0x0200          /* defer indication */
  26#define T_HB    0x0100          /* heartbeat */
  27#define T_LC    0x0080          /* error: late collision */
  28#define T_RL    0x0040          /* error: retransmission limit */
  29#define T_RC    0x003c          /* retry count */
  30#define T_UN    0x0002          /* error: underrun */
  31#define T_CSL   0x0001          /* carier sense lost */
  32#define T_ERROR (T_HB | T_LC | T_RL | T_UN | T_CSL)
  33
  34/*
  35 * receive BD's
  36 */
  37#define R_E     0x8000          /* buffer empty */
  38#define R_W     0x2000          /* wrap bit */
  39#define R_I     0x1000          /* interrupt on reception */
  40#define R_L     0x0800          /* last BD in frame */
  41#define R_F     0x0400          /* first BD in frame */
  42#define R_M     0x0100          /* received because of promisc. mode */
  43
  44#define R_LG    0x0020          /* frame too long */
  45#define R_NO    0x0010          /* non-octet aligned */
  46#define R_SH    0x0008          /* short frame */
  47#define R_CR    0x0004          /* receive CRC error */
  48#define R_OV    0x0002          /* receive overrun */
  49#define R_CL    0x0001          /* collision */
  50#define ETHER_R_ERROR (R_LG | R_NO | R_SH | R_CR | R_OV | R_CL)
  51
  52
  53/*
  54 * ethernet interrupts
  55 */
  56#define ETHERNET_GRA    0x0080  /* graceful stop complete */
  57#define ETHERNET_TXE    0x0010  /* transmit error         */
  58#define ETHERNET_RXF    0x0008  /* receive frame          */
  59#define ETHERNET_BSY    0x0004  /* busy condition         */
  60#define ETHERNET_TXB    0x0002  /* transmit buffer        */
  61#define ETHERNET_RXB    0x0001  /* receive buffer         */
  62
  63/*
  64 * ethernet protocol specific mode register (PSMR)
  65 */
  66#define ETHER_HBC       0x8000    /* heartbeat checking      */
  67#define ETHER_FC        0x4000    /* force collision         */
  68#define ETHER_RSH       0x2000    /* receive short frames    */
  69#define ETHER_IAM       0x1000    /* individual address mode */
  70#define ETHER_CRC_32    (0x2<<10) /* Enable CRC              */
  71#define ETHER_PRO       0x0200    /* promiscuous             */
  72#define ETHER_BRO       0x0100    /* broadcast address       */
  73#define ETHER_SBT       0x0080    /* stop backoff timer      */
  74#define ETHER_LPB       0x0040    /* Loop Back Mode          */
  75#define ETHER_SIP       0x0020    /* sample input pins       */
  76#define ETHER_LCW       0x0010    /* late collision window   */
  77#define ETHER_NIB_13    (0x0<<1)  /* # of ignored bits 13    */
  78#define ETHER_NIB_14    (0x1<<1)  /* # of ignored bits 14    */
  79#define ETHER_NIB_15    (0x2<<1)  /* # of ignored bits 15    */
  80#define ETHER_NIB_16    (0x3<<1)  /* # of ignored bits 16    */
  81#define ETHER_NIB_21    (0x4<<1)  /* # of ignored bits 21    */
  82#define ETHER_NIB_22    (0x5<<1)  /* # of ignored bits 22    */
  83#define ETHER_NIB_23    (0x6<<1)  /* # of ignored bits 23    */
  84#define ETHER_NIB_24    (0x7<<1)  /* # of ignored bits 24    */
  85
  86/*
  87 * ethernet specific parameters
  88 */
  89#define CRC_WORD 4          /* Length in bytes of CRC */               
  90#define C_PRES   0xffffffff /* preform 32 bit CRC */
  91#define C_MASK   0xdebb20e3 /* comply with 32 bit CRC */       
  92#define CRCEC    0x00000000
  93#define ALEC     0x00000000
  94#define DISFC    0x00000000
  95#define PADS     0x00000000
  96#define RET_LIM  0x000f     /* retry 15 times to send a frame before interrupt */
  97#define ETH_MFLR 0x05ee     /* 1518 max frame size */
  98#define MINFLR   0x0040     /* Minimum frame size 64 */
  99#define MAXD1    0x05ee     /* Max dma count 1518 */
 100#define MAXD2    0x05ee
 101#define GADDR1   0x00000000 /* Clear group address */  
 102#define GADDR2   0x00000000
 103#define GADDR3   0x00000000    
 104#define GADDR4   0x00000000    
 105#define P_PER    0x00000000 /*not used */              
 106#define IADDR1   0x00000000 /* Individual hash table not used */       
 107#define IADDR2   0x00000000
 108#define IADDR3   0x00000000    
 109#define IADDR4   0x00000000            
 110#define TADDR_H  0x00000000 /* clear this regs */              
 111#define TADDR_M  0x00000000            
 112#define TADDR_L  0x00000000            
 113
 114/*       SCC Parameter Ram */
 115#define RFCR    0x18 /* normal operation */
 116#define TFCR    0x18 /* normal operation */
 117#define E_MRBLR 1518 /* Max ethernet frame length */
 118
 119/*
 120 * ethernet specific structure
 121 */
 122typedef union {
 123        unsigned char b[6];
 124        struct {
 125            unsigned short high;
 126            unsigned short middl;
 127            unsigned short low;
 128        } w;
 129} ETHER_ADDR;
 130
 131typedef struct {
 132    int        max_frame_length;
 133    int        promisc_mode;
 134    int        reject_broadcast;
 135    ETHER_ADDR phys_adr;
 136} ETHER_SPECIFIC;
 137
 138typedef struct {
 139    ETHER_ADDR     dst_addr;
 140    ETHER_ADDR     src_addr;
 141    unsigned short type_or_len;
 142    unsigned char  data[1];
 143} ETHER_FRAME;
 144
 145#define MAX_DATALEN 1500
 146typedef struct {
 147    ETHER_ADDR     dst_addr;
 148    ETHER_ADDR     src_addr;
 149    unsigned short type_or_len;
 150    unsigned char  data[MAX_DATALEN];
 151    unsigned char  fcs[CRC_WORD];
 152} ETHER_MAX_FRAME;
 153
 154
 155/*
 156 * Internal ethernet function prototypes
 157 */
 158void        ether_interrupt(int scc_num);
 159/* mleslie: debug */
 160/* static void ethernet_rx_internal(int scc_num); */
 161/* static void ethernet_tx_internal(int scc_num); */
 162
 163/*
 164 * User callable routines prototypes (ethernet specific)
 165 */
 166void ethernet_init(int                       scc_number,
 167                   alloc_routine             *alloc_buffer,
 168                   free_routine              *free_buffer,
 169                   store_rx_buffer_routine   *store_rx_buffer,
 170                   handle_tx_error_routine   *handle_tx_error,
 171                   handle_rx_error_routine   *handle_rx_error,
 172                   handle_lost_error_routine *handle_lost_error,
 173                   ETHER_SPECIFIC            *ether_spec);
 174int  ethernet_tx(int scc_number, void *buf, int length);
 175
 176#endif
 177
 178