release/src-rt-6.x.4708/cfe/cfe/arch/mips/board/bcm9635x/include/dev_bcm635x_enet.h

   1 /*
   2 <:copyright-broadcom
   3
   4  Copyright (c) 2002 Broadcom Corporation
   5  All Rights Reserved
   6  No portions of this material may be reproduced in any form without the
   7  written permission of:
   8           Broadcom Corporation
   9           16215 Alton Parkway
  10           Irvine, California 92619
  11  All information contained in this document is Broadcom Corporation
  12  company private, proprietary, and trade secret.
  13
  14 :>
  15 */
  16 #ifndef _DEV_BCM6352ENET_H_
  17 #define _DEV_BCM6352ENET_H_
  18
  19 #include "6352_map.h"
  20
  21 /*---------------------------------------------------------------------*/
  22 /* specify number of BDs and buffers to use                            */
  23 /*---------------------------------------------------------------------*/
  24 #define NR_TX_BDS               100
  25 #define NR_RX_BDS               100
  26 #define ENET_MAX_BUF_SIZE       1514    /* Body(1500) + EH_SIZE(14) */
  27 #define ENET_MAX_MTU_SIZE       1536    /* Body(1500) + EH_SIZE(14) + FCS(4) */
  28                                         /* + BRCM TYPE(2) + BRCM_TAG(4) +    */
  29                                         /* RECALCULATE CRC(4) + pad to 16    */
  30                                         /* boundary(8)                       */
  31 #define HEDR_LEN                18
  32 #define DMA_MAX_BURST_LENGTH    16      /* in 32 bit words */
  33
  34 #define ETH_ALEN                6
  35
  36 typedef struct Brcm_Hdr {
  37     unsigned char       dAddr[ETH_ALEN];/* destination hardware address */
  38     unsigned char       sAddr[ETH_ALEN];/* destination hardware address */
  39     uint16_t            brcmType;       /* special Broadcom type */
  40     uint32_t            brcmTag;        /* special Broadcom tag */
  41 }__attribute__((packed)) Brcm_Hdr;
  42
  43 /*
  44  * device context
  45  */
  46 typedef struct bcm6352enet_softc {
  47     unsigned long   dualMacMode;        /* dual mac mode */
  48     unsigned char   macAddr[ETH_ALEN];
  49
  50     /* transmit variables */
  51     volatile DmaChannel *dmaChannels;
  52     volatile DmaChannel *txDma;         /* location of transmit DMA register set */
  53     unsigned char   txBuf[ENET_MAX_MTU_SIZE+16];
  54     unsigned char   *txBufPtr;
  55
  56     /* receive variables */
  57     volatile DmaChannel *rxDma;         /* location of receive DMA register set */
  58     volatile DmaDesc *rxBds;            /* Memory location of rx bd ring */
  59     volatile DmaDesc *rxBdAssignPtr;    /* ptr to next rx bd to become full */
  60     volatile DmaDesc *rxBdReadPtr;      /* ptr to next rx bd to be processed */
  61     volatile DmaDesc *rxLastBdPtr;      /* ptr to last allocated rx bd */
  62     volatile DmaDesc *rxFirstBdPtr;     /* ptr to first allocated rx bd */
  63     int             nrRxBds;            /* number of receive bds */
  64     unsigned long   rxBufLen;           /* size of rx buffers for DMA */
  65     uint16_t        chipId;             /* chip's id */
  66     uint16_t        chipRev;            /* step */
  67     unsigned char   *rxBuffers;
  68     unsigned char   rxMem[NR_RX_BDS * (sizeof(DmaDesc)+ENET_MAX_MTU_SIZE+16)];
  69 } bcm6352enet_softc;
  70
  71
  72 // BD macros
  73 #define IncRxBDptr(x, s) if (x == ((bcm6352enet_softc *)s)->rxLastBdPtr) \
  74                              x = ((bcm6352enet_softc *)s)->rxFirstBdPtr; \
  75                       else x++
  76
  77
  78 /* The Broadcom type and tag fields */
  79 #define BRCM_TYPE               0x8874
  80
  81 /* header length: DA (6) + SA (6) + BRCM_TYPE (2) + BRCM_TAG (4) */
  82 #define HEADER_LENGTH 18
  83
  84 /* SMP port bit definition */
  85 #define SMP_PORT            0x40 /* frame management port */
  86 #define SMP_PORT_ID         0x0A /* management port ID */
  87 #define FORWARDING_STATE    0xA0 /* STP state */
  88 #define RX_DISABLE          0x01 /* receive disable */
  89 #define TX_DISABLE          0x02 /* transmit disable */
  90 #define SW_FWDG_EN          0x02 /* software forwarding enabled */
  91 #define MANAGED_MODE        0x01 /* managed mode */
  92
  93 /* PORT ID definition */
  94 #define MANAGEMENT_PORT     10
  95 #define PHY0_PORT           0
  96 #define PHY1_PORT           1
  97
  98 static inline int test_bit(int nr, volatile void *addr)
  99 {
 100     return ((1UL << (nr & 31)) & (((const unsigned int *) addr)[nr >> 5])) != 0;
 101 }
 102
 103 static inline void set_bit(int nr, volatile void * addr)
 104 {
 105     int mask;
 106     volatile int    *a = addr;
 107
 108     a += nr >> 5;
 109     mask = 1 << (nr & 0x1f);
 110     *a |= mask;
 111 }
 112
 113 static inline void clear_bit(int nr, volatile void * addr)
 114 {
 115     int mask;
 116     volatile int    *a = addr;
 117
 118     a += nr >> 5;
 119     mask = 1 << (nr & 0x1f);
 120     *a &= ~mask;
 121 }
 122
 123 static inline int test_and_set_bit(int nr, volatile void * addr)
 124 {
 125     int mask, retval;
 126     volatile int    *a = addr;
 127
 128     a += nr >> 5;
 129     mask = 1 << (nr & 0x1f);
 130     retval = (mask & *a) != 0;
 131     *a |= mask;
 132
 133     return retval;
 134 }
 135
 136 static inline int test_and_clear_bit(int nr, volatile void * addr)
 137 {
 138     int mask, retval;
 139     volatile int    *a = addr;
 140
 141     a += nr >> 5;
 142     mask = 1 << (nr & 0x1f);
 143     retval = (mask & *a) != 0;
 144     *a &= ~mask;
 145
 146     return retval;
 147 }
 148
 149 #endif /* _DEV_BCM6352ENET_H_ */