4.4BSD/usr/src/sys/vax/if/if_acpreg.h
/*-
* @(#)if_acpreg.h 7.2 (Berkeley) 12/2/90
*/
/*************************************************************************/
/* */
/* */
/* ________________________________________________________ */
/* / \ */
/* | AAA CCCCCCCCCCCCCC CCCCCCCCCCCCCC | */
/* | AAAAA CCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCC | */
/* | AAAAAAA CCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCC | */
/* | AAAA AAAA CCCC CCCC | */
/* | AAAA AAAA CCCC CCCC | */
/* | AAAA AAAA CCCC CCCC | */
/* | AAAA AAAA CCCC CCCC | */
/* | AAAA AAAAAAAAAAA CCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCC | */
/* | AAAA AAAAAAAAAAA CCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCC | */
/* | AAAA AAAAAAAAA CCCCCCCCCCCCCC CCCCCCCCCCCCCC | */
/* \________________________________________________________/ */
/* */
/* Copyright (c) 1986 by Advanced Computer Communications */
/* 720 Santa Barbara Street, Santa Barbara, California 93101 */
/* (805) 963-9431 */
/* */
/* */
/* File: if_acpreg.h */
/* */
/* Author: Arthur Berggreen */
/* */
/* Project: ACP6100 (UPB with HDLC firmware) */
/* ACP5100 (QPB with HDLC firmware) */
/* */
/* Revision History: */
/* */
/* 21-NOV-1985 Clare Russ: add fileheader and comments */
/* Add definitions for implementatin of new Command Interface */
/* (CIF) and Access Path Allocation Protocol (APAP). */
/* */
/*************************************************************************/
/* device registers */
struct acpregs {
u_short csr; /* control and status register */
/* I/O request mailbox */
u_short req_chan; /* FDX channel number */
u_char req_adx; /* address bits 17-16 */
u_char req_flags; /* mailbox flags */
u_short req_addr; /* address bits 15-00 */
u_short req_cnt; /* byte count */
u_char req_fcn; /* I/O function */
u_char req_sbf; /* I/O subfunction */
/* I/O completion mailbox */
u_short cmp_chan; /* FDX channel number */
u_char cmp_unused; /* address bits 17-16 */
u_char cmp_flags; /* mailbox flags */
u_short cmp_cnt; /* byte count */
u_char cmp_stat; /* I/O status */
u_char cmp_sbst; /* I/O substatus */
/* Transfer request mailbox */
u_short xfr_chan; /* FDX channel number */
u_char xfr_adx; /* address bits 17-16 */
u_char xfr_flags; /* mailbox flags */
u_short xfr_addr; /* address bits 15-00 */
u_short xfr_cnt; /* byte count */
/* System status mailbox */
u_char sys_vers; /* system version number */
u_char sys_id; /* system identification */
u_char sys_vect; /* interrupt vector base */
u_char sys_stat; /* system status */
};
/* defines for CSR */
#define CSR_BIT15 0x8000
#define CSR_BIT14 0x4000
#define CSR_MAINT 0x2000
#define CSR_HALT 0x1000
#define CSR_IBPEND 0x0800
#define CSR_IAPEND 0x0400
#define CSR_IBREQ 0x0200
#define CSR_IAREQ 0x0100
#define CSR_BIT7 0x0080
#define CSR_BIT6 0x0040
#define CSR_INTRB 0x0020 /* ACP CPU Interrupt A Request */
#define CSR_INTRA 0x0010 /* ACP CPU Interrupt B Request */
#define CSR_IENB 0x0008 /* enable UNIBUS interrupt b */
#define CSR_IENA 0x0004 /* enable UNIBUS interrupt a */
#define CSR_DMAEN 0x0002
#define CSR_RESET 0x0001
/* mailbox handshake flags */
#define FLAGS_RDY 0x80
#define FLAGS_DON 0x40
#define FLAGS_DIR 0x20
/* I/O request function code definitions */
#define ACPRED 0x01 /* read from ACP */
#define ACPWRT 0x02 /* write to ACP */
#define ACPSTR 0x10 /* stream flag */
#define ACPEOS (0x20|ACPSTR) /* end of stream flag */
#define ACPABT 0x04 /* abort flag */
#define ACPXFR 0x40 /* tranfer req/grant flag */
#define FCN_MASK 0x07