i386/linux/linux-2.3.21/drivers/ap1000/apfddi.h

   1   /*
   2    * Copyright 1996 The Australian National University.
   3    * Copyright 1996 Fujitsu Laboratories Limited
   4    *
   5    * This software may be distributed under the terms of the Gnu
   6    * Public License version 2 or later
   7   */
   8 #define BUFFER_MEM      0x40000
   9 #define CSR0            0x60000
  10 #define CSR1            0x60004
  11 #define PLC             0x60080
  12 #define FORMAC          0x60200
  13 #define FIFO            0x68000
  14
  15 /* Size of buffer memory */
  16 #define BUFFER_SIZE     32768           /* words; 128kB */
  17
  18 /* Bits in CSR0 */
  19 #define CS0_INT_REQ     0x8000          /* board interrupt request asserted */
  20 #define CS0_MAC_IRQ     0x4000          /* FORMAC is requesting interrupt */
  21 #define CS0_PHY_IRQ     0x2000          /* PLC is requesting interrupt */
  22 #define CS0_LED2        0x1000          /* turn on led 2 */
  23 #define CS0_DO_IRQ      0x0200          /* request interrupt */
  24 #define CS0_INT_ENABLE  0x0100          /* enable interrupt requests */
  25 #define CS0_DMA_ENABLE  0x0080          /* enable DMA requests */
  26 #define CS0_DMA_RECV    0x0040          /* DMA requests are in receive dirn. */
  27 #define CS0_LED1        0x0010          /* turn on led 1 */
  28 #define CS0_LED0        0x0008          /* turn on led 0 (red) */
  29 #define CS0_HREQ        0x0007          /* host request to FORMAC */
  30 #define CS0_HREQ_WSPEC  0x0002          /* write special frames */
  31 #define CS0_HREQ_RECV   0x0003          /* read receive queue */
  32 #define CS0_HREQ_WS     0x0004          /* write synchronous queue */
  33 #define CS0_HREQ_WA0    0x0005          /* write async queue 0 */
  34 #define CS0_HREQ_WA1    0x0006          /* write async queue 1 */
  35 #define CS0_HREQ_WA2    0x0007          /* write async queue 2 */
  36
  37 /* Bits in CSR1 */
  38 #define CS1_THIS_QAF    0x0800          /* this queue almost full */
  39 #define CS1_FIFO_TAG    0x0400          /* tag of word at head of fifo */
  40 #define CS1_BUF_RD_TAG  0x0200          /* tag of last word read from buffer */
  41 #define CS1_BUF_WR_TAG  0x0100          /* tag to write to buffer */
  42 #define CS1_TAGMODE     0x0080          /* enable tag mode */
  43 #define CS1_RESET_MAC   0x0040          /* reset FORMAC and PLC */
  44 #define CS1_RESET_FIFO  0x0020          /* reset FIFO */
  45 #define CS1_CLEAR_QAF   0x0010          /* clear queue-almost-full bits */
  46 #define CS1_FIFO_LEVEL  0x0007          /* # words in FIFO (0 - 4) */
  47
  48 /*
  49  * FDDI Frame Control values.
  50  */
  51 #define FDDI_SMT                0x41
  52 #define FDDI_SMT_NSA            0x4f
  53 #define FDDI_FC_LLC             0x50
  54 #define FDDI_FC_LLC_MASK        0xf0
  55
  56 /*
  57  * Unnumbered LLC format commands
  58  */
  59 #define LLC_UI          0x3
  60 #define LLC_UI_P        0x13
  61 #define LLC_DISC        0x43
  62 #define LLC_DISC_P      0x53
  63 #define LLC_UA          0x63
  64 #define LLC_UA_P        0x73
  65 #define LLC_TEST        0xe3
  66 #define LLC_TEST_P      0xf3
  67 #define LLC_FRMR        0x87
  68 #define LLC_FRMR_P      0x97
  69 #define LLC_DM          0x0f
  70 #define LLC_DM_P        0x1f
  71 #define LLC_XID         0xaf
  72 #define LLC_XID_P       0xbf
  73 #define LLC_SABME       0x6f
  74 #define LLC_SABME_P     0x7f
  75
  76 /*
  77  * Supervisory LLC commands
  78  */
  79 #define LLC_RR          0x01
  80 #define LLC_RNR         0x05
  81 #define LLC_REJ         0x09
  82
  83 /*
  84  * Info format - dummy only
  85  */
  86 #define LLC_INFO        0x00
  87
  88 /*
  89  * ISO PDTR 10178 contains among others
  90  */
  91 #define LLC_X25_LSAP    0x7e
  92 #define LLC_SNAP_LSAP   0xaa
  93 #define LLC_ISO_LSAP    0xfe
  94
  95 /*
  96  * Structure of the FDDI MAC header.
  97  */
  98 struct fddi_header {
  99     u_char      fddi_fc;        /* frame control field */
 100     u_char      fddi_dhost[6];  /* destination address */
 101     u_char      fddi_shost[6];  /* source address */
 102 };
 103
 104 /*
 105  * Structure of LLC/SNAP header.
 106  */
 107 struct llc_header {
 108   u_char llc_dsap;
 109   u_char llc_ssap;
 110   u_char snap_control;
 111   u_char snap_org_code[3];
 112   u_short snap_ether_type;
 113 };
 114
 115 #define FDDI_HDRLEN     13      /* sizeof(struct fddi_header) */
 116 #define LLC_SNAPLEN     8       /* bytes for LLC/SNAP header */
 117 #define FDDI_HARDHDR_LEN 28     /* Hard header size */
 118
 119 #define FDDIMTU         4352
 120
 121
 122 /* Types of loopback we can do. */
 123 typedef enum {
 124     loop_none,
 125     loop_formac,
 126     loop_plc_lm,
 127     loop_plc_eb,
 128     loop_pdx
 129 } LoopbackType;
 130
 131 /* Offset from fifo for writing word with tag. */
 132 #define FIFO_TAG        0x80
 133
 134 #define MAX_FRAME_LEN   4500
 135
 136 void set_ring_op(int up);
 137 void rmt_event(int st);
 138 void set_cf_join(int on);
 139
 140 extern struct net_device *apfddi_device;
 141 extern struct net_device_stats *apfddi_stats;
 142