187 lines
6.4 KiB
C
187 lines
6.4 KiB
C
/* $NetBSD: gpibvar.h,v 1.1 2003/06/02 03:45:42 gmcgarry Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Gregory McGarry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/queue.h>
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#define GPIB_NDEVS 30 /* max address */
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#define GPIB_ADDRMASK 0x1f /* address mask */
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#define GPIB_BROADCAST_ADDR 31 /* GPIB broadcast address */
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/*
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* GPIB commands
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*/
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/* Universal command group (UCG) [0x10] */
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#define GPIBCMD_LLO 0x11 /* local lockout */
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#define GPIBCMD_DCL 0x14 /* universal device clear */
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#define GPIBCMD_PPU 0x15 /* parallel poll unconfigure */
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#define GPIBCMD_SPE 0x18
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#define GPIBCMD_SPD 0x19
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/* Addressed command group (ACG) [0x00] */
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#define GPIBCMD_GTL 0x01
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#define GPIBCMD_SDC 0x04 /* selected device clear */
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#define GPIBCMD_PPC 0x05 /* parallel poll clear */
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#define GPIBCMD_GET 0x08
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#define GPIBCMD_TCT 0x09
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#define GPIBCMD_LAG 0x20 /* listener address group commands */
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#define GPIBCMD_UNL 0x3f /* universal unlisten */
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#define GPIBCMD_TAG 0x40 /* talker address group commands */
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#define GPIBCMD_UNA 0x5e /* unaddress (master talk address?) */
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#define GPIBCMD_UNT 0x5f /* universal untalk */
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#define GPIBCMD_SCG 0x60 /* secondary group commands */
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#define GPIBCMD_PPD 0x70
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#define GPIBCMD_DEL 0x7f
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struct gpib_softc;
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struct gpib_chipset_tag {
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void (*reset)(void *);
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int (*send)(void *, int, int, void *, int);
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int (*recv)(void *, int, int, void *, int);
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int (*pptest)(void *, int);
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void (*ppwatch)(void *, int);
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void (*ppclear)(void *);
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void (*xfer)(void *, int, int, void *, int, int, int);
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int (*tc)(void *, int);
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int (*gts)(void *);
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void (*ifc)(void *);
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int (*sendcmds)(void *, void *, int);
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int (*senddata)(void *, void *, int);
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int (*recvdata)(void *, void *, int);
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void *cookie;
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struct gpib_softc *bus;
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};
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typedef struct gpib_chipset_tag *gpib_chipset_tag_t;
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/*
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* Wrapper functions that go directly to the hardware driver.
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*/
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#define gpibreset(ic) \
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(*((ic)->reset))((ic)->cookie)
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#define gpibpptest(ic, slave) \
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(*((ic)->pptest))((ic)->cookie, (slave))
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#define gpibppclear(ic) \
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(*((ic)->ppclear))((ic)->cookie)
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#define gpibxfer(ic, slave, sec, buf, cnt, rw, timo) \
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(*((ic)->xfer))((ic)->cookie, (slave), (sec), (buf), (cnt), \
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(rw), (timo))
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/*
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* An GPIB job queue entry. Slave drivers have one of these used
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* to queue requests with the controller.
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*/
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typedef void (*gpib_callback_t)(void *, int);
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struct gpibqueue {
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TAILQ_ENTRY(gpibqueue) hq_list; /* entry on queue */
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void *hq_softc; /* slave's softc */
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int hq_slave; /* slave on bus */
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gpib_callback_t hq_callback; /* slave's callback function */
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};
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typedef struct gpibqueue *gpib_handle_t;
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int _gpibregister(struct gpib_softc *, int, void (*cb)(void *, int),
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void *, gpib_handle_t *);
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int _gpibrequest(struct gpib_softc *, gpib_handle_t);
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void _gpibrelease(struct gpib_softc *, gpib_handle_t);
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int _gpibswait(struct gpib_softc *, int);
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void _gpibawait(struct gpib_softc *);
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int _gpibsend(struct gpib_softc *, int, int, void *, int);
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int _gpibrecv(struct gpib_softc *, int, int, void *, int);
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#define gpibsend(ic, slave, sec, addr, cnt) \
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_gpibsend((ic)->bus, (slave), (sec), (addr), (cnt))
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#define gpibrecv(ic, slave, sec, addr, cnt) \
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_gpibrecv((ic)->bus, (slave), (sec), (addr), (cnt))
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#define gpibregister(ic, slave, callback, arg, hdlp) \
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_gpibregister((ic)->bus, (slave), (callback), (arg), (hdlp))
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#define gpibrequest(ic, hdl) \
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_gpibrequest((ic)->bus, hdl)
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#define gpibrelease(ic, hdl) \
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_gpibrelease((ic)->bus, hdl)
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#define gpibawait(ic) \
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_gpibawait((ic)->bus)
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#define gpibswait(ic, slave) \
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_gpibswait((ic)->bus, (slave))
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int gpib_alloc(struct gpib_softc *, u_int8_t);
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int gpib_isalloc(struct gpib_softc *, u_int8_t);
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void gpib_dealloc(struct gpib_softc *, u_int8_t);
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/* called from controller drivers only */
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int gpibintr(void *);
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int gpibdevprint(void *, const char *);
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/* callback flags */
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#define GPIBCBF_START 1
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#define GPIBCBF_INTR 2
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/* gpibxfer dir(ection) parameter */
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#define GPIB_READ 1
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#define GPIB_WRITE 2
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/*
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* Attach devices
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*/
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struct gpib_attach_args {
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gpib_chipset_tag_t ga_ic; /* GPIB chipset tag */
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int ga_address; /* device GPIB address */
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};
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/*
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* Attach a GPIB to controller.
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*/
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struct gpibdev_attach_args {
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gpib_chipset_tag_t ga_ic; /* GPIB chipset tag */
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int ga_address; /* host GPIB address */
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};
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/*
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* Software state per GPIB bus.
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*/
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struct gpib_softc {
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struct device sc_dev; /* generic device glue */
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gpib_chipset_tag_t sc_ic; /* GPIB chipset tag */
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u_int8_t sc_myaddr; /* my (host) GPIB address */
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int sc_flags;
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#define GPIBF_ACTIVE 0x01
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u_int32_t sc_rmap; /* resource map */
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TAILQ_HEAD(, gpibqueue) sc_queue; /* GPIB job queue */
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};
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