/* $NetBSD: jazzio.c,v 1.10 2003/05/03 18:10:45 wiz Exp $ */ /* $OpenBSD: picabus.c,v 1.11 1999/01/11 05:11:10 millert Exp $ */ /* NetBSD: tc.c,v 1.2 1995/03/08 00:39:05 cgd Exp */ /* * Copyright (c) 1994, 1995 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * Author: Per Fogelstrom. (Mips R4x00) * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include #include #include #include #include #include #include #include #include #include #include #include #include void arc_sysreset __P((bus_addr_t, bus_size_t)); struct jazzio_softc { struct device sc_dv; struct abus sc_bus; struct arc_bus_dma_tag sc_dmat; struct pica_dev *sc_devs; }; /* Definition of the driver for autoconfig. */ int jazziomatch(struct device *, struct cfdata *, void *); void jazzioattach(struct device *, struct device *, void *); int jazzioprint(void *, const char *); CFATTACH_DECL(jazzio, sizeof(struct jazzio_softc), jazziomatch, jazzioattach, NULL, NULL); extern struct cfdriver jazzio_cd; void jazzio_intr_establish(int, int (*)(void *), void *); void jazzio_intr_disestablish(int); int jazzio_intr(unsigned, struct clockframe *); int jazzio_no_handler __P((void *)); /* * Interrupt dispatch table for jazz i/o bus. */ struct jazzio_intr_registry { intr_handler_t int_hand; /* Interrupt handler */ void *param; /* Parameter to send to handler */ }; struct jazzio_intr_registry jazzio_intrtab[] = { { jazzio_no_handler, (void *)NULL, }, /* 0 */ { jazzio_no_handler, (void *)NULL, }, /* 1 */ { jazzio_no_handler, (void *)NULL, }, /* 2 */ { jazzio_no_handler, (void *)NULL, }, /* 3 */ { jazzio_no_handler, (void *)NULL, }, /* 4 */ { jazzio_no_handler, (void *)NULL, }, /* 5 */ { jazzio_no_handler, (void *)NULL, }, /* 6 */ { jazzio_no_handler, (void *)NULL, }, /* 7 */ { jazzio_no_handler, (void *)NULL, }, /* 8 */ { jazzio_no_handler, (void *)NULL, }, /* 9 */ { jazzio_no_handler, (void *)NULL, }, /* 10 */ { jazzio_no_handler, (void *)NULL, }, /* 11 */ { jazzio_no_handler, (void *)NULL, }, /* 12 */ { jazzio_no_handler, (void *)NULL, }, /* 13 */ { jazzio_no_handler, (void *)NULL, }, /* 14 */ { jazzio_no_handler, (void *)NULL, }, /* 15 */ }; struct jazzio_config *jazzio_conf = NULL; struct pica_dev *jazzio_devconfig = NULL; int jazzio_found = 0; int jazzio_int_mask = 0; /* jazz i/o interrupt enable mask */ struct arc_bus_space jazzio_bus; int jazziomatch(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { struct confargs *ca = aux; /* Make sure that we're looking for a jazzio bus. */ if (strcmp(ca->ca_name, jazzio_cd.cd_name) != 0) return (0); return (1); } void jazzioattach(parent, self, aux) struct device *parent; struct device *self; void *aux; { struct jazzio_softc *sc = (struct jazzio_softc *)self; struct jazzio_attach_args ja; int i; if (jazzio_conf == NULL) panic("jazzio_conf isn't initialized"); if (jazzio_devconfig == NULL) panic("jazzio_devconfig isn't initialized"); jazzio_found = 1; printf("\n"); /* keep our CPU device description handy */ sc->sc_devs = jazzio_devconfig; /* set up interrupt handlers */ (*platform->set_intr)(MIPS_INT_MASK_1, jazzio_intr, 2); sc->sc_bus.ab_dv = (struct device *)sc; /* Initialize jazzio DMA mapping register area and pool */ jazz_dmatlb_init(&jazzio_bus, jazzio_conf->jc_dmatlbreg); /* Create bus_dma_tag */ jazz_bus_dma_tag_init(&sc->sc_dmat); /* Try to configure each jazzio attached device */ for (i = 0; sc->sc_devs[i].ps_ca.ca_name != NULL; i++) { ja.ja_name = sc->sc_devs[i].ps_ca.ca_name; ja.ja_bus = &sc->sc_bus; ja.ja_bust = &jazzio_bus; ja.ja_dmat = &sc->sc_dmat; ja.ja_addr = (bus_addr_t)sc->sc_devs[i].ps_base; ja.ja_intr = sc->sc_devs[i].ps_ca.ca_slot; ja.ja_dma = 0; /* Tell the autoconfig machinery we've found the hardware. */ config_found(self, &ja, jazzioprint); } } int jazzioprint(aux, pnp) void *aux; const char *pnp; { struct jazzio_attach_args *ja = aux; if (pnp) aprint_normal("%s at %s", ja->ja_name, pnp); aprint_normal(" addr 0x%lx", ja->ja_addr); if (ja->ja_intr != -1) aprint_normal(" intr %d", ja->ja_intr); return (UNCONF); } void jazzio_intr_establish(intr, handler, val) int intr; intr_handler_t handler; void *val; { if (intr < 0 || intr >= sizeof(jazzio_intrtab)/sizeof(jazzio_intrtab[0])) { panic("jazzio intr %d out of range", intr); } else if (jazzio_intrtab[intr].int_hand != jazzio_no_handler) { panic("jazzio intr %d already set to %p", intr, jazzio_intrtab[intr].int_hand); } else { jazzio_int_mask |= 1 << intr; jazzio_intrtab[intr].int_hand = handler; jazzio_intrtab[intr].param = val; } (*jazzio_conf->jc_set_iointr_mask)(jazzio_int_mask); } void jazzio_intr_disestablish(intr) int intr; { jazzio_int_mask &= ~(1 << intr); jazzio_intrtab[intr].int_hand = jazzio_no_handler; jazzio_intrtab[intr].param = (void *)NULL; (*jazzio_conf->jc_set_iointr_mask)(jazzio_int_mask); } int jazzio_no_handler(arg) void *arg; { panic("uncaught jazzio interrupt with arg %p", arg); } /* * Handle jazz i/o interrupt. */ int jazzio_intr(mask, cf) unsigned mask; struct clockframe *cf; { unsigned int vector; struct jazzio_intr_registry *jirp; while ((vector = inb(jazzio_conf->jc_iointr_status_reg)) != 0) { jirp = &jazzio_intrtab[(vector >> 2) - 1]; (*jirp->int_hand)(jirp->param); } return (~0); /* Dont reenable */ } void jazzio_reset() { arc_sysreset(PICA_SYS_KBD, JAZZIO_KBCMDP); }