udareg.h

Macros

UDA_DI            X
UDA_ERR           X
UDA_GO            X
UDA_IE            X
UDA_INT           X
UDA_NV            X
UDA_OWN           X
UDA_PI            X
UDA_QB            X
UDA_STEP1         X
UDA_STEP2         X
UDA_STEP3         X
UDA_STEP4         X
ca_ringbase       X

struct's

mscp_header       X
udaca             X
udadevice         X

   1: /*
   2:  * Copyright (c) 1982, 1986 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)udareg.h	7.1 (Berkeley) 6/5/86
   7:  */
   8: 
   9: /*
  10:  * UDA-50 registers and structures
  11:  */
  12: 
  13: struct udadevice {
  14:     short   udaip;      /* initialization and polling */
  15:     short   udasa;      /* status and address */
  16: };
  17: 
  18: #define UDA_ERR     0100000 /* error bit */
  19: #define UDA_STEP4   0040000 /* step 4 has started */
  20: #define UDA_STEP3   0020000 /* step 3 has started */
  21: #define UDA_STEP2   0010000 /* step 2 has started */
  22: #define UDA_STEP1   0004000 /* step 1 has started */
  23: #define UDA_NV      0002000 /* no host settable interrupt vector */
  24: #define UDA_QB      0001000 /* controller supports Q22 bus */
  25: #define UDA_DI      0000400 /* controller implements diagnostics */
  26: #define UDA_IE      0000200 /* interrupt enable */
  27: #define UDA_PI      0000001 /* host requests adapter purge interrupts */
  28: #define UDA_GO      0000001 /* start operation, after init */
  29: 
  30: 
  31: /*
  32:  * UDA Communications Area
  33:  */
  34: 
  35: struct udaca {
  36:     short   ca_xxx1;    /* unused */
  37:     char    ca_xxx2;    /* unused */
  38:     char    ca_bdp;     /* BDP to purge */
  39:     short   ca_cmdint;  /* command queue transition interrupt flag */
  40:     short   ca_rspint;  /* response queue transition interrupt flag */
  41:     long    ca_rspdsc[NRSP];/* response descriptors */
  42:     long    ca_cmddsc[NCMD];/* command descriptors */
  43: };
  44: 
  45: #define ca_ringbase ca_rspdsc[0]
  46: 
  47: #define UDA_OWN 0x80000000  /* UDA owns this descriptor */
  48: #define UDA_INT 0x40000000  /* allow interrupt on ring transition */
  49: 
  50: /*
  51:  * MSCP packet info
  52:  */
  53: struct mscp_header {
  54:     short   uda_msglen; /* length of MSCP packet */
  55:     char    uda_credits;    /* low 4 bits: credits, high 4 bits: msgtype */
  56:     char    uda_vcid;   /* virtual circuit id */
  57: };