drivers/net/ethernet/i825xx/eexpress.h

   1 /*
   2  * eexpress.h: Intel EtherExpress16 defines
   3  */
   4
   5 /*
   6  * EtherExpress card register addresses
   7  * as offsets from the base IO region (dev->base_addr)
   8  */
   9
  10 #define DATAPORT      0x0000
  11 #define WRITE_PTR     0x0002
  12 #define READ_PTR      0x0004
  13 #define SIGNAL_CA     0x0006
  14 #define SET_IRQ       0x0007
  15 #define SM_PTR        0x0008
  16 #define MEM_Dec       0x000a
  17 #define MEM_Ctrl      0x000b
  18 #define MEM_Page_Ctrl 0x000c
  19 #define Config        0x000d
  20 #define EEPROM_Ctrl   0x000e
  21 #define ID_PORT       0x000f
  22 #define MEM_ECtrl     0x000f
  23
  24 /*
  25  * card register defines
  26  */
  27
  28 /* SET_IRQ */
  29 #define SIRQ_en       0x08
  30 #define SIRQ_dis      0x00
  31
  32 /* EEPROM_Ctrl */
  33 #define EC_Clk        0x01
  34 #define EC_CS         0x02
  35 #define EC_Wr         0x04
  36 #define EC_Rd         0x08
  37 #define ASIC_RST      0x40
  38 #define i586_RST      0x80
  39
  40 #define eeprom_delay() { udelay(40); }
  41
  42 /*
  43  * i82586 Memory Configuration
  44  */
  45
  46 /* (System Configuration Pointer) System start up block, read after 586_RST */
  47 #define SCP_START 0xfff6
  48
  49 /* Intermediate System Configuration Pointer */
  50 #define ISCP_START 0x0000
  51
  52 /* System Command Block */
  53 #define SCB_START 0x0008
  54
  55 /* Start of buffer region.  Everything before this is used for control
  56  * structures and the CU configuration program.  The memory layout is
  57  * determined in eexp_hw_probe(), once we know how much memory is
  58  * available on the card.
  59  */
  60
  61 #define TX_BUF_START 0x0100
  62
  63 #define TX_BUF_SIZE ((24+ETH_FRAME_LEN+31)&~0x1f)
  64 #define RX_BUF_SIZE ((32+ETH_FRAME_LEN+31)&~0x1f)
  65
  66 /*
  67  * SCB defines
  68  */
  69
  70 /* these functions take the SCB status word and test the relevant status bit */
  71 #define SCB_complete(s) (((s) & 0x8000) != 0)
  72 #define SCB_rxdframe(s) (((s) & 0x4000) != 0)
  73 #define SCB_CUdead(s)   (((s) & 0x2000) != 0)
  74 #define SCB_RUdead(s)   (((s) & 0x1000) != 0)
  75 #define SCB_ack(s)      ((s) & 0xf000)
  76
  77 /* Command unit status: 0=idle, 1=suspended, 2=active */
  78 #define SCB_CUstat(s)   (((s)&0x0300)>>8)
  79
  80 /* Receive unit status: 0=idle, 1=suspended, 2=out of resources, 4=ready */
  81 #define SCB_RUstat(s)   (((s)&0x0070)>>4)
  82
  83 /* SCB commands */
  84 #define SCB_CUnop       0x0000
  85 #define SCB_CUstart     0x0100
  86 #define SCB_CUresume    0x0200
  87 #define SCB_CUsuspend   0x0300
  88 #define SCB_CUabort     0x0400
  89 #define SCB_resetchip   0x0080
  90
  91 #define SCB_RUnop       0x0000
  92 #define SCB_RUstart     0x0010
  93 #define SCB_RUresume    0x0020
  94 #define SCB_RUsuspend   0x0030
  95 #define SCB_RUabort     0x0040
  96
  97 /*
  98  * Command block defines
  99  */
 100
 101 #define Stat_Done(s)    (((s) & 0x8000) != 0)
 102 #define Stat_Busy(s)    (((s) & 0x4000) != 0)
 103 #define Stat_OK(s)      (((s) & 0x2000) != 0)
 104 #define Stat_Abort(s)   (((s) & 0x1000) != 0)
 105 #define Stat_STFail     (((s) & 0x0800) != 0)
 106 #define Stat_TNoCar(s)  (((s) & 0x0400) != 0)
 107 #define Stat_TNoCTS(s)  (((s) & 0x0200) != 0)
 108 #define Stat_TNoDMA(s)  (((s) & 0x0100) != 0)
 109 #define Stat_TDefer(s)  (((s) & 0x0080) != 0)
 110 #define Stat_TColl(s)   (((s) & 0x0040) != 0)
 111 #define Stat_TXColl(s)  (((s) & 0x0020) != 0)
 112 #define Stat_NoColl(s)  ((s) & 0x000f)
 113
 114 /* Cmd_END will end AFTER the command if this is the first
 115  * command block after an SCB_CUstart, but BEFORE the command
 116  * for all subsequent commands. Best strategy is to place
 117  * Cmd_INT on the last command in the sequence, followed by a
 118  * dummy Cmd_Nop with Cmd_END after this.
 119  */
 120
 121 #define Cmd_END     0x8000
 122 #define Cmd_SUS     0x4000
 123 #define Cmd_INT     0x2000
 124
 125 #define Cmd_Nop     0x0000
 126 #define Cmd_SetAddr 0x0001
 127 #define Cmd_Config  0x0002
 128 #define Cmd_MCast   0x0003
 129 #define Cmd_Xmit    0x0004
 130 #define Cmd_TDR     0x0005
 131 #define Cmd_Dump    0x0006
 132 #define Cmd_Diag    0x0007
 133
 134
 135 /*
 136  * Frame Descriptor (Receive block) defines
 137  */
 138
 139 #define FD_Done(s)  (((s) & 0x8000) != 0)
 140 #define FD_Busy(s)  (((s) & 0x4000) != 0)
 141 #define FD_OK(s)    (((s) & 0x2000) != 0)
 142
 143 #define FD_CRC(s)   (((s) & 0x0800) != 0)
 144 #define FD_Align(s) (((s) & 0x0400) != 0)
 145 #define FD_Resrc(s) (((s) & 0x0200) != 0)
 146 #define FD_DMA(s)   (((s) & 0x0100) != 0)
 147 #define FD_Short(s) (((s) & 0x0080) != 0)
 148 #define FD_NoEOF(s) (((s) & 0x0040) != 0)
 149
 150 struct rfd_header {
 151         volatile unsigned long flags;
 152         volatile unsigned short link;
 153         volatile unsigned short rbd_offset;
 154         volatile unsigned short dstaddr1;
 155         volatile unsigned short dstaddr2;
 156         volatile unsigned short dstaddr3;
 157         volatile unsigned short srcaddr1;
 158         volatile unsigned short srcaddr2;
 159         volatile unsigned short srcaddr3;
 160         volatile unsigned short length;
 161
 162         /* This is actually a Receive Buffer Descriptor.  The way we
 163          * arrange memory means that an RBD always follows the RFD that
 164          * points to it, so they might as well be in the same structure.
 165          */
 166         volatile unsigned short actual_count;
 167         volatile unsigned short next_rbd;
 168         volatile unsigned short buf_addr1;
 169         volatile unsigned short buf_addr2;
 170         volatile unsigned short size;
 171 };
 172
 173 /* Returned data from the Time Domain Reflectometer */
 174
 175 #define TDR_LINKOK       (1<<15)
 176 #define TDR_XCVRPROBLEM  (1<<14)
 177 #define TDR_OPEN         (1<<13)
 178 #define TDR_SHORT        (1<<12)
 179 #define TDR_TIME         0x7ff