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Latest fixes from Nesheim@cornell
[unix-history] / usr / src / sys / vax / if / if_hyreg.h
/*
* Copyright (c) 1982 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)if_hyreg.h 6.3 (Berkeley) %G%
*/
/*
* Network Systems Corporation Hyperchannel interface
*
* supports A410 adapter interfaced via a DEC DR-11B, NSC PI-13 or PI-14
* (PI-14 is a PI-13 with different line drivers, software is
* identical to a PI-13)
*
* Written by Steve Glaser, Tektronix Inc., July 1982
*
* NOTE:
*
* DR11B code has not been fully checked out with 4.1a.
* The first adapters at Tek came with DR11Bs, and the code once worked,
* but those have been upgraded to PI-13s.
*/
#define PI13 1 /* PI13 vs. DR11B device depandant code */
#ifndef HYLOG
#define HYLOG 1 /* enable logging of errors */
#endif
/*
* Structure of a HYPERchannel adapter header
*/
struct hy_hdr {
short hyh_ctl; /* control */
short hyh_access; /* access code */
union { /* to/from addresses */
short hyh_addr; /* full address */
char hyh_baddr[2]; /* adapter/port number from address */
} hyhu_to, hyhu_from;
#define hyh_to hyhu_to.hyh_addr
#define hyh_from hyhu_from.hyh_addr
#define hyh_to_adapter hyhu_to.hyh_baddr[0]
#define hyh_to_port hyhu_to.hyh_baddr[1]
#define hyh_from_adapter hyhu_from.hyh_baddr[0]
#define hyh_from_port hyhu_from.hyh_baddr[1]
short hyh_param; /* parameter (for loopback) */
char hyh_type; /* record type */
char hyh_off; /* offset from end of hy_hdr to ip data */
};
/*
* Structure of a HYPERchannel message header (from software)
*/
struct hym_data {
short hymd_mplen; /* message proper length, if associated data */
};
struct hym_hdr {
struct hym_data hym_d;
#define hym_mplen hym_d.hymd_mplen
struct hy_hdr hym_hdr; /* hardware header, MUST BE LAST */
};
/*
* HYPERchannel header word control bits
*/
#define H_XTRUNKS 0x00F0 /* transmit trunks */
#define H_RTRUNKS 0x000F /* remote trunks to transmit on for loopback */
#define H_ASSOC 0x0100 /* has associated data */
#define H_LOOPBK 0x00FF /* loopback command */
/*
* Structure of Statistics Record (counters)
*/
struct hy_stat {
u_long hyc_msgcnt; /* # messages transmitted */
u_long hyc_dbcnt; /* # data buffers transmitted */
u_long hyc_tbusy; /* # available trunks busy */
u_long hyc_hwret; /* # hardware retransmits */
u_long hyc_crcbad; /* # crc errors on trunk */
u_long hyc_mcret; /* # microcode retransmits */
u_long hyc_tdabort; /* # trunk driver aborts */
u_char hyc_atype[3]; /* adapter type and revision level */
u_char hyc_uaddr; /* adapter unit number */
};
/*
* Structure of the Status Record
*/
struct hy_status {
u_char hys_gen_status; /* general status byte */
u_char hys_last_fcn; /* last function code issued */
u_char hys_resp_trunk; /* trunk response byte */
u_char hys_status_trunk; /* trunk status byte */
u_char hys_recd_resp; /* recieved response byte */
u_char hys_error; /* error code */
u_char hys_caddr; /* compressed addr of 1st msg on chain */
u_char hys_pad; /* not used */
};
/*
* Get port number from status record
*/
#define PORTNUM(p) (((p)->hys_gen_status >> 6) & 0x03)
/*
* The HYPERchannel driver sends and receives messages formatted:
*
* +---------------------------------------+ ---
* | | /|\
* | HYPERchannel adapter header (hy_hdr) | |
* | | |
* +---------------------------------------+ |
* | | |
* | Internet Protocol header (ip) | message proper
* | | (64 bytes max)
* +---------------------------------------+ |
* | | |
* | TCP header + user data | |
* | (if it all fits here) | |
* | | \|/
* +---------------------------------------+ ---
*
* +---------------------------------------+ ---
* | | /|\
* | | |
* | TCP header + user data | associated data
* | | |
* | | \|/
* +---------------------------------------+ ---
*
* If all of the datagram will fit in the message proper (including
* the TCP header and user data) the entire datagram is passed in
* the message proper and the associated data feature of the HYPERchannel
* is not used.
*
* The mapping from internet addresses to HYPERchannel addresses is:
*
* 0 7 8 15 16 31
* +---------+---------+-----------------------+
* | network | special | HYPERchannel address |
* +---------+---------+-----------------------+
*
* |<------------ internet address ----------->|
*
* The hyperchannel address is decoded as follows:
*
* 0 7 8 13 14 15
* +-------------------+----------------+------+
* | adapter number | zero | port |
* +-------------------+----------------+------+
*
* The low 2 bits are port number (interpreted by hyperchannel hardware).
*
* The encoding of special bits is:
*
* 00 normal packet
*
* 01 loop this packet back to the sender at the
* specified adapter (ip header source/destination addresses
* swapped before sending, command bits added to tell the
* remote HYPERchannel adapter debug & performance studies]
* this code acts like 02 (below) if the ip destination (before
* any swapping) and the destination address don't match (e.g.
* this packet is being routed through a gateway)
*
* 02 loop this packet back to the sender at the
* specified adapter, but go through the specified adapter's
* IP. This is for testing IP's store and forward mechanism.
*
* other undefined, currently treated as normal packet
*
*/
#define MPSIZE 64 /* "Message Proper" size */
#define MAXRETRY 4
/*
* Device registers
*/
struct hydevice {
short hyd_wcr; /* word count (negated) */
u_short hyd_bar; /* bus address bits 15-0 */
u_short hyd_csr; /* control and status */
u_short hyd_dbuf; /* data buffer */
};
/*
* CSR bit layout
*/
#define S_ERROR 0100000 /* error */
#define S_NEX 0040000 /* non-existent memory error */
#define S_ATTN 0020000 /* attn (always zero) */
#ifdef PI13
#define S_STKINTR 0010000 /* stacked interrupt */
#else
#define S_MAINT 0010000 /* maintenance (not used) */
#endif
#define S_A 0004000 /* device status A (recieve data available) */
#define S_B 0002000 /* device status B (normal termination) */
#define S_C 0001000 /* device status C (abnormal termination) */
#ifdef PI13
#define S_POWEROFF 0000400 /* power off indicator */
#else
#define S_CYCLE 0000400 /* cycle (not used) */
#endif
#define S_READY 0000200 /* ready */
#define S_IE 0000100 /* interrupt enable */
#define S_XBA 0000060 /* bus address bit bits 17 and 16 */
#define S_CLRINT 0000014 /* clear stacked interrupt */
#define S_IATTN 0000010 /* interrupt on attention only */
#define S_WC 0000004 /* interrupt on word count == 0 only */
#define S_IATTNWC 0000000 /* interrupt on word count == 0 and attention */
#define S_BURST 0000002 /* burst mode DMA (not used) */
#define S_GO 0000001 /* go */
#define XBASHIFT 12
#define HY_CSR_BITS "\20\20ERROR\17NEX\16ATTN\15STKINTR\14RECV_DATA\13NORMAL\12ABNORMAL\11POWER\10READY\07IENABLE\06XBA17\05XBA16\04IATTN\03IWC\02BURST\01GO"
/*
* PI13 status conditions
*/
#define HYS_RECVDATA(x) (((x)->hyd_csr & S_A) != 0) /* get adapter data */
#define HYS_NORMAL(x) (((x)->hyd_csr & S_B) != 0) /* done normally */
#define HYS_ABNORMAL(x) (((x)->hyd_csr & S_C) != 0) /* done abnormally */
#define HYS_ERROR(x) (((x)->hyd_csr & S_ERROR) != 0) /* error condition */
#define HYS_DONE(x) (((x)->hyd_csr & (S_ERROR|S_B|S_C)) != 0)
/*
* Function Codes for the Hyperchannel Adapter
* The codes are offset so they can be "or"ed into
* the reg data buffer
*/
#define HYF_XMITMSG 0x04 /* transmit message */
#define HYF_XMITDATA 0x08 /* transmit associated data */
#define HYF_XMITLSTDATA 0x0C /* transmit last associated data */
#define HYF_XMITLOCMSG 0x10 /* transmit local message */
#define HYF_INPUTMSG 0x24 /* input message proper */
#define HYF_INPUTDATA 0x28 /* input assiciated data */
#define HYF_STATUS 0x40 /* request status */
#define HYF_DUMPREGS 0x50 /* dump extention registers */
#define HYF_MARKP0 0x60 /* mark down port 0 */
#define HYF_MARKP1 0x64 /* mark down port 1 */
#define HYF_MARKP2 0x68 /* mark down port 2 */
#define HYF_MARKP3 0x6C /* mark down port 3 */
#define HYF_MP0RR 0x70 /* mark down port 0 and reroute messages */
#define HYF_MP1RR 0x74 /* mark down port 1 and reroute messages */
#define HYF_MP2RR 0x78 /* mark down port 2 and reroute messages */
#define HYF_MP3RR 0x7C /* mark down port 3 and reroute messages */
#define HYF_RSTATS 0xA0 /* read statistics */
#define HYF_RCSTATS 0xA4 /* read and clear statistics */
#define HYF_SETTEST 0xC0 /* enable test operations *set test mode) */
#define HYF_SADDR_LEN 0xC4 /* test mode: set address and length */
#define HYF_WBUFF 0xC8 /* test mode: write buffer */
#define HYF_RBUFF 0xCC /* test mode: read buffer */
#define HYF_CLRADAPTER 0xE0 /* clear adapter */
#define HYF_END_OP 0xE4 /* end operation */
#define HYF_CLRWFMSG 0xE6 /* clear wait for mwssage */
#define HYF_WAITFORMSG 0xE8 /* wait for message */
/*
* Hyperchannel record types
*/
#define HYLINK_IP 0 /* Internet Protocol Packet */
#ifdef HYLOG
#define HYL_SIZE 16*1024
struct hy_log {
struct hy_log *hyl_self;
u_char hyl_enable; /* logging enabled? */
u_char hyl_onerr; /* state to enter on error */
u_char *hyl_eptr; /* &hy_log.hyl_buf[HYL_SIZE] */
u_char *hyl_ptr; /* pointer into hyl_buf */
u_char hyl_buf[HYL_SIZE]; /* log buffer space */
};
#define HYL_NOP 0
#define HYL_UP 1 /* markup */
#define HYL_STATUS 2 /* status results (struct hy_status) */
#define HYL_STATISTICS 3 /* statistics (struct hy_stat) */
#define HYL_XMIT 4 /* packed being send (struct hym_hdr) */
#define HYL_RECV 5 /* recieved packet (short len; struct hy_hdr) */
#define HYL_CMD 6 /* cmd issued (uchar cmd, state; short count) */
#define HYL_INT 7 /* interrupt (short csr, wcr) */
#define HYL_DISABLED 0 /* logging disabled */
#define HYL_CONTINUOUS 1 /* continuous logging */
#define HYL_CAUGHT1 2 /* one buffer full captured */
#define HYL_CATCH1 3 /* one buffer full being captured */
#define HYL_CAUGHTSTATUS 4 /* one buffer of status captured */
#define HYL_CATCHSTATUS 5 /* one buffer fill of status being captured */
#ifdef KERNEL
struct hy_log hy_log;
#endif
#endif
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.