4.4BSD/usr/src/sys/vax/if/ACC/driver/if_ddareg.h
/*************************************************************************/
/* */
/* */
/* ________________________________________________________ */
/* / \ */
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/* | AAAA AAAA CCCC CCCC | */
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/* | 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: ddareg.h */
/* When this file is copied to the /sys/vaxif */
/* directory, it is renamed 'if_ddareg.h'. */
/* */
/* Project: UNIX 4.n BSD DDA-X.25 Network Interface Driver */
/* for ACP 5250 and ACP 6250 */
/* */
/* Function: This file contains definitions of the hardware */
/* interface of the ACP 5250/6250. */
/* */
/* Revision History at end of file */
/* */
/*************************************************************************/
/* ACP device Communication Register layout */
#ifdef SIMULATION
/* device registers */
struct ddaregs {
u_short csr; /* control and status register */
/* I/O request mailbox */
u_short req_chan; /* FDX channel number */
u_char req_flags; /* mailbox flags */
u_char req_adx; /* address bits 17-16 */
u_short req_addr; /* address bits 15-00 */
u_short req_cnt; /* byte count */
u_char req_sbf; /* I/O subfunction */
u_char req_fcn; /* I/O function */
/* I/O completion mailbox */
u_short cmp_chan; /* FDX channel number */
u_char cmp_flags; /* mailbox flags */
u_char cmp_unused; /* address bits 17-16 */
u_short cmp_cnt; /* byte count */
u_char cmp_sbst; /* I/O substatus */
u_char cmp_stat; /* I/O status */
/* Transfer request mailbox */
u_short xfr_chan; /* FDX channel number */
u_char xfr_flags; /* mailbox flags */
u_char xfr_adx; /* address bits 17-16 */
u_short xfr_addr; /* address bits 15-00 */
u_short xfr_cnt; /* byte count */
/* System status mailbox */
u_char sys_id; /* system identification */
u_char sys_vers; /* system version number */
u_char sys_stat; /* system status */
u_char sys_vect; /* interrupt vector base */
};
#else
/* device registers */
struct ddaregs {
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 */
};
#endif
/* 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, these flags are used with the req_flags, */
/* cmp_flags, and xfr_flags to indicate current state of events */
#define FLAGS_RDY 0x80 /* indicates ready */
#define FLAGS_DON 0x40 /* indicates done */
#define FLAGS_DIR 0x20 /* indicates write (host to ACP) */
/* I/O request function code definitions */
#define DDARDB 0x01 /* read from ACP */
#define DDAWRT 0x02 /* write to ACP */
#define DDASTR 0x10 /* stream flag */
#define DDAEOS (0x20|DDASTR) /* end of stream flag */
#define DDAABT 0x04 /* abort flag */
#define DDAXFR 0x40 /* indicates transfer request */
/* The UNIBUS address in req_addr is */
/* invalid. The ACP device must issue */
/* a Transfer Request in order to */
/* obtain the UNIBUS address */
#define DDASWP 0x80 /* Swap host high/low bytes */
/* The ACP device views UNIBUS memory */
/* as if it were MC68000 memory: the */
/* MS byte of a word is even-addressed */
/* byte and the LS byte is the odd- */
/* addressed byte. */
#define FCN_MASK 0x07
#define DDA_BITS \
"\10\20UER\17NXM\16PER\15ZRUN\14ZGO\10MBLK\7SRV\6MAIN\5DMA\4WRT\3IEN\2RST\1NMI"
/* Host Request Mailbox Completion Status */
#define DDAIOCOK 0x01 /* successful completion */
#define DDAIOCOKP 0x02 /* successful completion, more data pending */
#define DDAIOCABT 0xff /* i/o aborted */
#define DDAIOCERR 0xfe /* program error */
#define DDAIOCOVR 0xfd /* overrun error */
#define DDAIOCUBE 0xfc /* Transfer count = 0 */
/* Either program error (byte count on I/O */
/* request equals 0) or driver error (driver */
/* granted byte count = 0 in response to */
/* Transfer Request) */
#define DDAIODMAE 0xfb /* DMA completion error: Completion sub- */
/* status equals error bits from the ACP DMA */
/* status register */
#define DDAIOLCOL 0xf9 /* Listen Collision: Both sides of a DPN in */
/* the same direction have Listen requests */
/* pending. Both requests are terminated */
/* with this status code. */
#define DDAIOFUNC 0xf8 /* Invalid function: The function specified */
/* in a request is invalid. */
#define DDAIODPN 0xf7 /* Invalid DPN: The DPN specified in a */
/* request is out of the range handled by */
/* CRI (Communications Register Interface) */
#ifdef __GNU__
#define ddaregs ddaregs volatile
#endif __GNU__
/*
Revision History:
26-Mar-1986: V1.0 Clair Russ
First generated.
??-???-1988: V1.1 Steve Johnson
Added code for simulation
19-Mar-1989: V4.3.1 Paul Traina
Added Multinet / GCC support for structure padding
28-May-1989: V4.3.6 Paul Traina
Cosmetic changes only
*/