1 /* $OpenBSD: gscbus.c,v 1.30 2010/11/28 20:09:40 miod Exp $ */ 2 3 /* 4 * Copyright (c) 1998 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* #define GSCDEBUG */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/device.h> 34 #include <sys/malloc.h> 35 #include <sys/mbuf.h> 36 #include <sys/reboot.h> 37 38 #include <machine/iomod.h> 39 #include <machine/autoconf.h> 40 #include <machine/cpufunc.h> 41 42 #include <hppa/gsc/gscbusvar.h> 43 44 int gscmatch(struct device *, void *, void *); 45 void gscattach(struct device *, struct device *, void *); 46 47 struct cfattach gsc_ca = { 48 sizeof(struct gsc_softc), gscmatch, gscattach 49 }; 50 51 struct cfdriver gsc_cd = { 52 NULL, "gsc", DV_DULL 53 }; 54 55 int 56 gscmatch(parent, cfdata, aux) 57 struct device *parent; 58 void *cfdata; 59 void *aux; 60 { 61 struct confargs *ca = aux; 62 63 return !strcmp(ca->ca_name, "gsc"); 64 } 65 66 void 67 gscattach(parent, self, aux) 68 struct device *parent; 69 struct device *self; 70 void *aux; 71 { 72 struct gsc_softc *sc = (struct gsc_softc *)self; 73 struct gsc_attach_args *ga = aux; 74 75 sc->sc_iot = ga->ga_iot; 76 sc->sc_ic = ga->ga_ic; 77 78 #ifdef USELEDS 79 if (machine_ledaddr) 80 printf(": %sleds", machine_ledword? "word" : ""); 81 #endif 82 printf ("\n"); 83 84 sc->sc_ih = cpu_intr_establish(IPL_NESTED, ga->ga_irq, 85 gsc_intr, (void *)sc->sc_ic->gsc_base, sc->sc_dev.dv_xname); 86 87 pdc_scanbus(self, &ga->ga_ca, MAXMODBUS, 0, 0); 88 } 89 90 int 91 gscprint(aux, pnp) 92 void *aux; 93 const char *pnp; 94 { 95 struct gsc_attach_args *ga = aux; 96 97 if (pnp) 98 printf("%s at %s", ga->ga_name, pnp); 99 return (UNCONF); 100 } 101 102 void * 103 gsc_intr_establish(sc, irq, pri, handler, arg, name) 104 struct gsc_softc *sc; 105 int pri; 106 int irq; 107 int (*handler)(void *v); 108 void *arg; 109 const char *name; 110 { 111 volatile u_int32_t *r = sc->sc_ic->gsc_base; 112 void *iv; 113 114 if ((iv = cpu_intr_map(sc->sc_ih, pri, irq, handler, arg, name))) 115 r[1] |= (1 << irq); 116 else { 117 #ifdef GSCDEBUG 118 printf("%s: attaching irq %d, already occupied\n", 119 sc->sc_dev.dv_xname, irq); 120 #endif 121 } 122 123 return (iv); 124 } 125 126 void 127 gsc_intr_disestablish(sc, v) 128 struct gsc_softc *sc; 129 void *v; 130 { 131 #if notyet 132 volatile u_int32_t *r = sc->sc_ic->gsc_base; 133 134 r[1] &= ~(1 << irq); 135 136 cpu_intr_unmap(sc->sc_ih, v); 137 #endif 138 } 139