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Annotation of 42BSD/sys/vaxif/if_ecreg.h, revision 1.1.1.1

1.1       root        1: /*     if_ecreg.h      6.1     83/07/29        */
                      2: 
                      3: /*
                      4:  * 3Com Ethernet controller registers.
                      5:  */
                      6: struct ecdevice {
                      7:        short   ec_rcr;         /* Receive Control Register */
                      8:        short   ec_xcr;         /* Transmit Control Register */
                      9: };
                     10: 
                     11: /*
                     12:  * Control and status bits -- rcr
                     13:  */
                     14: #define        EC_SPIE         0x8000          /* set parity interrupt enable */
                     15: #define        EC_ASTEP        0x4000          /* increment address counter */
                     16: #define        EC_AROM         0x2000          /* 1: Use address ROM, 0: use RAM */
                     17: #define        EC_PE           0x2000          /* Parity error */
                     18: #define        EC_AWCLK        0x1000          /* address write clock bit */
                     19: #define        EC_PIE          0x1000          /* Parity interrupt enable (read) */
                     20: #define        EC_ADATA        0x0f00          /* address/filtering */
                     21: #define        EC_RDONE        0x0080          /* receive done */
                     22: #define        EC_MDISAB       0x0080          /* memory disable */
                     23: #define        EC_RINTEN       0x0040          /* receive interrupt enable */
                     24: #define        EC_RCLR         0x0020          /* clear RDONE bit */
                     25: #define        EC_RWBN         0x0010          /* submit buffer for receive */
                     26: #define        EC_RBN          0x000f          /* buffer number */
                     27: 
                     28: #define        EC_RBITS        "\10\16PE\15PIE\10RDONE\7RINTEN"
                     29: 
                     30: /*
                     31:  * Control and status bits -- xcr
                     32:  */
                     33: #define        EC_JAM          0x8000          /* collision dectected */
                     34: #define        EC_JINTEN       0x4000          /* collision interrupt enable */
                     35: #define        EC_JCLR         0x2000          /* clear collision detect */
                     36: #define        EC_UECLR        0x0100          /* reset controller */
                     37: #define        EC_XDONE        0x0080          /* transmit done */
                     38: #define        EC_XINTEN       0x0040          /* transmit interrupt enable */
                     39: #define        EC_XCLR         0x0020          /* clear XDONE bit */
                     40: #define        EC_XWBN         0x0010          /* submit buffer for transmit */
                     41: #define        EC_XBN          0x000f          /* buffer number */
                     42: 
                     43: #define        EC_XBITS        "\10\20JAM\17JINTEN\10XDONE\7XINTEN"
                     44: 
                     45: /*
                     46:  * Useful combinations
                     47:  */
                     48: #define        EC_READ         (EC_AROM|0x600|EC_RINTEN|EC_RWBN)
                     49: #define        EC_WRITE        (EC_JINTEN|EC_XINTEN|EC_XWBN)
                     50: #define        EC_CLEAR        (EC_JINTEN|EC_XINTEN|EC_JCLR)
                     51: 
                     52: /*
                     53:  * Buffer number definitions
                     54:  */
                     55: #define        ECTBF           0               /* Buffer for transmit */
                     56: #define        ECRLBF          1               /* First buffer for receive */
                     57: #define        ECRHBF          15              /* Last buffer for receive */
                     58: 
                     59: #define        ECRDOFF         528             /* Packet offset in read buffer */

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