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First-go at hil-over-gpib. Doesn't do much.

This commit is contained in:
gmcgarry 2003-06-02 03:48:25 +00:00
parent cb93fa6aac
commit 5c3ec26c1a
1 changed files with 120 additions and 0 deletions
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120
sys/dev/gpib/hil_gpib.c Normal file
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#include <sys/param.h>
#include <sys/systm.h>
#include <sys/callout.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <dev/gpib/gpibvar.h>
#ifdef DEBUG
int hildebug = 0;
#define HDB_FOLLOW 0x01
#define HDB_MMAP 0x02
#define HDB_MASK 0x04
#define HDB_CONFIG 0x08
#define HDB_KEYBOARD 0x10
#define HDB_IDMODULE 0x20
#define HDB_EVENTS 0x80
#define DPRINTF(mask, str) if (hildebug & (mask)) printf str
#else
#define DPRINTF(mask, str) /* nothing */
#endif
struct hil_softc {
struct device sc_dev;
gpib_chipset_tag_t sc_ic;
gpib_handle_t sc_hdl;
int sc_address; /* GPIB address */
int sc_flags;
#define HILF_ALIVE 0x01
#define HILF_OPEN 0x02
#define HILF_UIO 0x04
#define HILF_TIMO 0x08
#define HILF_DELAY 0x10
};
int hilmatch(struct device *, struct cfdata *, void *);
void hilattach(struct device *, struct device *, void *);
const struct cfattach hil_ca = {
sizeof(struct hil_softc), hilmatch, hilattach,
};
void hilcallback(void *, int);
void hilstart(void *);
int
hilmatch(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct gpib_attach_args *ga = aux;
u_int8_t *cmd = "SE;";
u_int8_t stat;
if (gpibsend(ga->ga_ic, ga->ga_address, -1, cmd, 3) != 3)
return (0);
if (gpibrecv(ga->ga_ic, ga->ga_address, -1, &stat, 1) != 1)
return (0);
printf("hilmatch: enable status byte 0x%x\n", stat);
return (1);
}
void
hilattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct hil_softc *sc = (struct hil_softc *)self;
struct gpib_attach_args *ga = aux;
printf("\n");
sc->sc_ic = ga->ga_ic;
sc->sc_address = ga->ga_address;
if (gpibregister(sc->sc_ic, sc->sc_address, hilcallback, sc,
&sc->sc_hdl)) {
printf("%s: can't register callback\n", sc->sc_dev.dv_xname);
return;
}
sc->sc_flags = HILF_ALIVE;
}
void
hilcallback(v, action)
void *v;
int action;
{
struct hil_softc *sc = v;
DPRINTF(HDB_FOLLOW, ("hilcallback: v=%p, action=%d\n", v, action));
switch (action) {
case GPIBCBF_START:
hilstart(sc);
case GPIBCBF_INTR:
/* no-op */
break;
#ifdef DEBUG
default:
DPRINTF(HDB_FOLLOW, ("hilcallback: unknown action %d\n",
action));
break;
#endif
}
}
void
hilstart(v)
void *v;
{
struct hil_softc *sc = v;
DPRINTF(HDB_FOLLOW, ("hilstart(%x)\n", sc->sc_dev.dv_unit));
sc->sc_flags &= ~HILF_DELAY;
}