211 lines
7.4 KiB
C
211 lines
7.4 KiB
C
/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* EPICS BASE Versions 3.13.7
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* and higher are distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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/*
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* $Id$
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*
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* Author Jeffrey O. Hill
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* johill@lanl.gov
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* 505 665 1831
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*
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* Experimental Physics and Industrial Control System (EPICS)
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*
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* Copyright 1991, the Regents of the University of California,
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* and the University of Chicago Board of Governors.
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*
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* This software was produced under U.S. Government contracts:
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* (W-7405-ENG-36) at the Los Alamos National Laboratory,
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* and (W-31-109-ENG-38) at Argonne National Laboratory.
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*
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* Initial development by:
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* The Controls and Automation Group (AT-8)
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* Ground Test Accelerator
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* Accelerator Technology Division
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* Los Alamos National Laboratory
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*
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* Co-developed with
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* The Controls and Computing Group
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* Accelerator Systems Division
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* Advanced Photon Source
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* Argonne National Laboratory
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*
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*/
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#ifndef __CAPROTO__
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#define __CAPROTO__
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/*
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* CA protocol number
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* TCP/UDP port number (bumped each major protocol change)
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*/
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#define CA_PROTOCOL_VERSION 4u
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#define CA_MINOR_VERSION 8u
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#define CA_VERSION_STRING "4.8"
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#define CA_UKN_MINOR_VERSION 0u /* unknown minor version */
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#if CA_PROTOCOL_VERSION == 4u
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#define CA_V41(MAJOR,MINOR) ((MINOR)>=1u)
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#define CA_V42(MAJOR,MINOR) ((MINOR)>=2u)
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#define CA_V43(MAJOR,MINOR) ((MINOR)>=3u)
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#define CA_V44(MAJOR,MINOR) ((MINOR)>=4u)
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#define CA_V45(MAJOR,MINOR) ((MINOR)>=5u)
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#define CA_V46(MAJOR,MINOR) ((MINOR)>=6u)
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#define CA_V47(MAJOR,MINOR) ((MINOR)>=7u)
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#define CA_V48(MAJOR,MINOR) ((MINOR)>=8u)
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#elif CA_PROTOCOL_VERSION > 4u
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#define CA_V41(MAJOR,MINOR) ( 1u )
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#define CA_V42(MAJOR,MINOR) ( 1u )
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#define CA_V43(MAJOR,MINOR) ( 1u )
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#define CA_V44(MAJOR,MINOR) ( 1u )
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#define CA_V45(MAJOR,MINOR) ( 1u )
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#define CA_V46(MAJOR,MINOR) ( 1u )
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#define CA_V47(MAJOR,MINOR) ( 1u )
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#define CA_V48(MAJOR,MINOR) ( 1u )
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#else
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#define CA_V41(MAJOR,MINOR) ( 0u )
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#define CA_V42(MAJOR,MINOR) ( 0u )
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#define CA_V43(MAJOR,MINOR) ( 0u )
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#define CA_V44(MAJOR,MINOR) ( 0u )
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#define CA_V45(MAJOR,MINOR) ( 0u )
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#define CA_V46(MAJOR,MINOR) ( 0u )
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#define CA_V47(MAJOR,MINOR) ( 0u )
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#define CA_V48(MAJOR,MINOR) ( 0u )
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#endif
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/*
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* NOTE: These port numbers are only used if the CA repeater and
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* CA server port numbers cant be obtained from the EPICS
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* environment variables "EPICS_CA_REPEATER_PORT" and
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* "EPICS_CA_SERVER_PORT"
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*/
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#define CA_PORT_BASE IPPORT_USERRESERVED + 56U
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#define CA_SERVER_PORT (CA_PORT_BASE+CA_PROTOCOL_VERSION*2u)
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#define CA_REPEATER_PORT (CA_PORT_BASE+CA_PROTOCOL_VERSION*2u+1u)
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/* 1492(min of ethernet and 802.{2,3} MTU) - 20(IP) - 8(UDP) joh 8-6-97 */
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#define ETHERNET_MAX_UDP (1482u-20u-8u)
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#define MAX_UDP 1024u /* original MAX_UDP */
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#define MAX_TCP (MAX_UDP*16u) /* so waveforms fit */
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#define MAX_MSG_SIZE (MAX_TCP) /* the larger of tcp and udp max */
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/*
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* architecture independent types
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*
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* (so far this works on all archs we have ported to)
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*/
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typedef unsigned short ca_uint16_t;
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typedef unsigned int ca_uint32_t;
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typedef float ca_float32_t;
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typedef ca_uint32_t caResId;
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/* values for m_cmmd */
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#define CA_PROTO_NOOP 0u /* do nothing, but verify TCP */
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#define CA_PROTO_EVENT_ADD 1u /* add an event */
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#define CA_PROTO_EVENT_CANCEL 2u /* cancel an event */
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#define CA_PROTO_READ 3u /* read and return a channel value*/
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#define CA_PROTO_WRITE 4u /* write a channel value */
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#define CA_PROTO_SNAPSHOT 5u /* snapshot of the system */
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#define CA_PROTO_SEARCH 6u /* IOC channel search */
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#define CA_PROTO_BUILD 7u /* build - obsolete */
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#define CA_PROTO_EVENTS_OFF 8u /* flow control */
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#define CA_PROTO_EVENTS_ON 9u /* flow control */
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#define CA_PROTO_READ_SYNC 10u /* purge old reads */
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#define CA_PROTO_ERROR 11u /* an operation failed */
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#define CA_PROTO_CLEAR_CHANNEL 12u /* free chan resources */
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#define CA_PROTO_RSRV_IS_UP 13u /* CA server has joined the net */
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#define CA_PROTO_NOT_FOUND 14u /* channel not found */
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#define CA_PROTO_READ_NOTIFY 15u /* add a one shot event */
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#define CA_PROTO_READ_BUILD 16u /* read and build - obsolete */
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#define REPEATER_CONFIRM 17u /* registration confirmation */
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#define CA_PROTO_CLAIM_CIU 18u /* client claims resource in server */
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#define CA_PROTO_WRITE_NOTIFY 19u /* notify after write chan value */
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#define CA_PROTO_CLIENT_NAME 20u /* CA V4.1 identify client */
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#define CA_PROTO_HOST_NAME 21u /* CA V4.1 identify client */
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#define CA_PROTO_ACCESS_RIGHTS 22u /* CA V4.2 asynch access rights chg */
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#define CA_PROTO_ECHO 23u /* CA V4.3 connection verify */
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#define REPEATER_REGISTER 24u /* registr for repeater fan out */
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#define CA_PROTO_SIGNAL 25u /* knock the server out of select */
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#define CA_PROTO_CLAIM_CIU_FAILED 26u /* unable to create chan resource in server */
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#define CA_PROTO_SERVER_DISCONN 27u /* server deletes PV (or channel) */
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#define CA_PROTO_LAST_CMMD CA_PROTO_CLAIM_CIU_FAILED
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/*
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* for use with search and not_found (if search fails and
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* its not a broadcast tell the client to look elesewhere)
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*/
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#define DOREPLY 10u
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#define DONTREPLY 5u
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/* size of object in bytes rounded up to nearest oct word */
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#define OCT_ROUND(A) ((((unsigned long)(A))+7u)>>3u)
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#define OCT_SIZEOF(A) (OCT_ROUND(sizeof(A)))
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/* size of object in bytes rounded up to nearest long word */
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#define QUAD_ROUND(A) (((unsigned long)(A))+3u)>>2u)
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#define QUAD_SIZEOF(A) (QUAD_ROUND(sizeof(A)))
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/* size of object in bytes rounded up to nearest short word */
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#define BI_ROUND(A) ((((unsigned long)(A))+1u)>>1u)
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#define BI_SIZEOF(A) (BI_ROUND(sizeof(A)))
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/*
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* For communicating access rights to the clients
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*
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* (placed in m_available hdr field of CA_PROTO_ACCESS_RIGHTS cmmd
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*/
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#define CA_PROTO_ACCESS_RIGHT_READ (1u<<0u)
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#define CA_PROTO_ACCESS_RIGHT_WRITE (1u<<1u)
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/*
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* All structures passed in the protocol must have individual
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* fields aligned on natural boundaries.
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*
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* NOTE: all structures declared in this file must have a
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* byte count which is evenly divisible by 8 matching
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* the largest atomic data type in db_access.h.
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*/
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#define CA_MESSAGE_ALIGN(A) (OCT_ROUND(A)<<3u)
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/*
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* the common part of each message sent/recv by the
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* CA server.
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*/
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typedef struct ca_hdr {
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ca_uint16_t m_cmmd; /* operation to be performed */
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ca_uint16_t m_postsize; /* size of message extension */
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ca_uint16_t m_dataType; /* operation data type */
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ca_uint16_t m_count; /* operation data count */
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ca_uint32_t m_cid; /* channel identifier */
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ca_uint32_t m_available; /* undefined message location for use
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* by client processes */
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}caHdr;
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/*
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* for monitor (event) message extension
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*/
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struct mon_info{
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ca_float32_t m_lval; /* low delta */
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ca_float32_t m_hval; /* high delta */
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ca_float32_t m_toval; /* period btween samples */
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ca_uint16_t m_mask; /* event select mask */
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ca_uint16_t m_pad; /* extend to 32 bits */
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};
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struct monops { /* monitor req opi to ioc */
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caHdr m_header;
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struct mon_info m_info;
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};
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/*
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* PV names greater than this length assumed to be invalid
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*/
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#define unreasonablePVNameSize 500u
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#endif /* __CAPROTO__ */
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