hil_gpib.c revision 1.1 
1#include <sys/param.h>
2#include <sys/systm.h>
3#include <sys/callout.h>
4#include <sys/conf.h>
5#include <sys/device.h>
6
7#include <dev/gpib/gpibvar.h>
8
9#ifdef DEBUG
10int     hildebug = 0;
11#define HDB_FOLLOW      0x01
12#define HDB_MMAP	0x02
13#define HDB_MASK	0x04
14#define HDB_CONFIG      0x08
15#define HDB_KEYBOARD    0x10
16#define HDB_IDMODULE    0x20
17#define HDB_EVENTS      0x80
18#define DPRINTF(mask, str)	if (hildebug & (mask)) printf str
19#else
20#define DPRINTF(mask, str)	/* nothing */
21#endif
22
23struct  hil_softc {
24	struct device sc_dev;
25	gpib_chipset_tag_t sc_ic;
26	gpib_handle_t sc_hdl;
27
28	int	sc_address;		 /* GPIB address */
29	int     sc_flags;
30#define HILF_ALIVE	0x01
31#define HILF_OPEN	0x02
32#define HILF_UIO	0x04
33#define HILF_TIMO	0x08
34#define HILF_DELAY	0x10
35};
36
37int     hilmatch(struct device *, struct cfdata *, void *);
38void    hilattach(struct device *, struct device *, void *);
39
40const struct cfattach hil_ca = {
41	sizeof(struct hil_softc), hilmatch, hilattach,
42};
43
44void	hilcallback(void *, int);
45void	hilstart(void *);
46
47int
48hilmatch(parent, match, aux)
49	struct device *parent;
50	struct cfdata *match;
51	void *aux;
52{
53	struct gpib_attach_args *ga = aux;
54	u_int8_t *cmd = "SE;";
55	u_int8_t stat;
56
57	if (gpibsend(ga->ga_ic, ga->ga_address, -1, cmd, 3) != 3)
58		return (0);
59	if (gpibrecv(ga->ga_ic, ga->ga_address, -1, &stat, 1) != 1)
60		return (0);
61	printf("hilmatch: enable status byte 0x%x\n", stat);
62	return (1);
63}
64
65void
66hilattach(parent, self, aux)
67	struct device *parent, *self;
68	void *aux;
69{
70	struct hil_softc *sc = (struct hil_softc *)self;
71	struct gpib_attach_args *ga = aux;
72
73	printf("\n");
74
75	sc->sc_ic = ga->ga_ic;
76	sc->sc_address = ga->ga_address;
77
78	if (gpibregister(sc->sc_ic, sc->sc_address, hilcallback, sc,
79	    &sc->sc_hdl)) {
80		printf("%s: can't register callback\n", sc->sc_dev.dv_xname);
81		return;
82	}
83
84	sc->sc_flags = HILF_ALIVE;
85}
86
87void
88hilcallback(v, action)
89	void *v;
90	int action;
91{
92	struct hil_softc *sc = v;
93
94	DPRINTF(HDB_FOLLOW, ("hilcallback: v=%p, action=%d\n", v, action));
95
96	switch (action) {
97	case GPIBCBF_START:
98		hilstart(sc);
99	case GPIBCBF_INTR:
100		/* no-op */
101		break;
102#ifdef DEBUG
103	default:
104		DPRINTF(HDB_FOLLOW, ("hilcallback: unknown action %d\n",
105		    action));
106		break;
107#endif
108	}
109}
110
111void
112hilstart(v)
113	void *v;
114{
115	struct hil_softc *sc = v;
116
117	DPRINTF(HDB_FOLLOW, ("hilstart(%x)\n", sc->sc_dev.dv_unit));
118
119	sc->sc_flags &= ~HILF_DELAY;
120}
121