1 /* $NetBSD: hil_gpib.c,v 1.11 2009/05/12 14:21:58 cegger Exp $ */ 2 3 #include <sys/cdefs.h> 4 __KERNEL_RCSID(0, "$NetBSD: hil_gpib.c,v 1.11 2009/05/12 14:21:58 cegger Exp $"); 5 6 #include <sys/param.h> 7 #include <sys/systm.h> 8 #include <sys/callout.h> 9 #include <sys/conf.h> 10 #include <sys/device.h> 11 12 #include <dev/gpib/gpibvar.h> 13 14 #ifdef DEBUG 15 int hildebug = 0; 16 #define HDB_FOLLOW 0x01 17 #define HDB_MMAP 0x02 18 #define HDB_MASK 0x04 19 #define HDB_CONFIG 0x08 20 #define HDB_KEYBOARD 0x10 21 #define HDB_IDMODULE 0x20 22 #define HDB_EVENTS 0x80 23 #define DPRINTF(mask, str) if (hildebug & (mask)) printf str 24 #else 25 #define DPRINTF(mask, str) /* nothing */ 26 #endif 27 28 struct hil_softc { 29 struct device sc_dev; 30 gpib_chipset_tag_t sc_ic; 31 gpib_handle_t sc_hdl; 32 33 int sc_address; /* GPIB address */ 34 int sc_flags; 35 #define HILF_ALIVE 0x01 36 #define HILF_OPEN 0x02 37 #define HILF_UIO 0x04 38 #define HILF_TIMO 0x08 39 #define HILF_DELAY 0x10 40 }; 41 42 int hilmatch(device_t, cfdata_t, void *); 43 void hilattach(device_t, device_t, void *); 44 45 const struct cfattach hil_ca = { 46 sizeof(struct hil_softc), hilmatch, hilattach, 47 }; 48 49 void hilcallback(void *, int); 50 void hilstart(void *); 51 52 int 53 hilmatch(device_t parent, cfdata_t match, void *aux) 54 { 55 struct gpib_attach_args *ga = aux; 56 u_int8_t *cmd = "SE;"; 57 u_int8_t stat; 58 59 if (gpibsend(ga->ga_ic, ga->ga_address, -1, cmd, 3) != 3) 60 return (0); 61 if (gpibrecv(ga->ga_ic, ga->ga_address, -1, &stat, 1) != 1) 62 return (0); 63 printf("hilmatch: enable status byte 0x%x\n", stat); 64 return (1); 65 } 66 67 void 68 hilattach(device_t parent, device_t self, void *aux) 69 { 70 struct hil_softc *sc = device_private(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 aprint_error_dev(&sc->sc_dev, "can't register callback\n"); 81 return; 82 } 83 84 sc->sc_flags = HILF_ALIVE; 85 } 86 87 void 88 hilcallback(void *v, int action) 89 { 90 struct hil_softc *sc = v; 91 92 DPRINTF(HDB_FOLLOW, ("hilcallback: v=%p, action=%d\n", v, action)); 93 94 switch (action) { 95 case GPIBCBF_START: 96 hilstart(sc); 97 case GPIBCBF_INTR: 98 /* no-op */ 99 break; 100 #ifdef DEBUG 101 default: 102 DPRINTF(HDB_FOLLOW, ("hilcallback: unknown action %d\n", 103 action)); 104 break; 105 #endif 106 } 107 } 108 109 void 110 hilstart(void *v) 111 { 112 struct hil_softc *sc = v; 113 114 DPRINTF(HDB_FOLLOW, ("hilstart(%x)\n", device_unit(&sc->sc_dev))); 115 116 sc->sc_flags &= ~HILF_DELAY; 117 } 118