/* $OpenBSD: ggbus.c,v 1.9 1997/01/04 12:49:24 niklas Exp $ */ /* * Copyright (c) 1994, 1995, 1996 Niklas Hallqvist * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Niklas Hallqvist. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include extern int cold; int ggdebug = 0; int ggstrayints = 0; void ggbusattach __P((struct device *, struct device *, void *)); int ggbusmatch __P((struct device *, void *, void *)); int ggbusprint __P((void *, const char *)); int ggbus_io_map __P((bus_space_tag_t, bus_addr_t, bus_size_t, int, bus_space_handle_t *)); int ggbus_mem_map __P((bus_space_tag_t, bus_addr_t, bus_size_t, int, bus_space_handle_t *)); int ggbus_cannot_mem_map __P((bus_space_tag_t, bus_addr_t, bus_size_t, int, bus_space_handle_t *)); int ggbus_unmap __P((bus_space_tag_t, bus_space_handle_t, bus_size_t)); int ggbusintr __P((void *)); void ggbus_attach_hook __P((struct device *, struct device *, struct isabus_attach_args *)); void *ggbus_intr_establish __P((void *, int, int, int, int (*)(void *), void *, char *)); void ggbus_intr_disestablish __P((void *, void *)); struct cfattach ggbus_ca = { sizeof(struct ggbus_softc), ggbusmatch, ggbusattach }; struct cfdriver ggbus_cd = { NULL, "ggbus", DV_DULL, 0 }; int ggbusmatch(parent, match, aux) struct device *parent; void *match, *aux; { struct zbus_args *zap = aux; /* * Check manufacturer and product id. */ if (zap->manid == 2150 && zap->prodid == 1) return(1); return(0); } void ggbusattach(parent, self, aux) struct device *parent, *self; void *aux; { struct ggbus_softc *sc = (struct ggbus_softc *)self; struct zbus_args *zap = aux; struct isabus_attach_args iba; bcopy(zap, &sc->sc_zargs, sizeof(struct zbus_args)); sc->sc_iot.bs_data = sc; sc->sc_iot.bs_map = ggbus_io_map; sc->sc_iot.bs_unmap = ggbus_unmap; sc->sc_iot.bs_swapped = 0; if (sc->sc_zargs.serno >= 2) { sc->sc_memt.bs_data = sc; sc->sc_memt.bs_map = ggbus_mem_map; sc->sc_memt.bs_unmap = ggbus_unmap; sc->sc_memt.bs_swapped = 0; sc->sc_status = GG2_STATUS_ADDR(sc->sc_zargs.va); /* XXX turn on wait states unconditionally for now. */ GG2_ENABLE_WAIT(zap->va); GG2_ENABLE_INTS(zap->va); } else sc->sc_memt.bs_map = ggbus_cannot_mem_map; printf(": pa 0x%08x va 0x%08x size 0x%x\n", zap->pa, zap->va, zap->size); sc->sc_ic.ic_data = sc; sc->sc_ic.ic_attach_hook = ggbus_attach_hook; sc->sc_ic.ic_intr_establish = ggbus_intr_establish; sc->sc_ic.ic_intr_disestablish = ggbus_intr_disestablish; iba.iba_busname = "isa"; iba.iba_iot = &sc->sc_iot; iba.iba_memt = &sc->sc_memt; iba.iba_ic = &sc->sc_ic; config_found(self, &iba, ggbusprint); } int ggbusprint(auxp, pnp) void *auxp; const char *pnp; { if (pnp == NULL) return(QUIET); return(UNCONF); } int ggbus_io_map(bst, addr, sz, cacheable, handle) bus_space_tag_t bst; bus_addr_t addr; bus_size_t sz; int cacheable; bus_space_handle_t *handle; { *handle = (bus_space_handle_t) ((struct ggbus_softc *)bst->bs_data)->sc_zargs.va + 2 * addr + 1; return 0; } int ggbus_mem_map(bst, addr, sz, cacheable, handle) bus_space_tag_t bst; bus_addr_t addr; bus_size_t sz; int cacheable; bus_space_handle_t *handle; { *handle = (bus_space_handle_t) ((struct ggbus_softc *)bst->bs_data)->sc_zargs.va + 2 * addr + GG2_MEMORY_OFFSET; return 0; } int ggbus_cannot_mem_map(bst, addr, sz, cacheable, handle) bus_space_tag_t bst; bus_addr_t addr; bus_size_t sz; int cacheable; bus_space_handle_t *handle; { static int have_warned = 0; if (!have_warned++) printf("The Golden Gate 1 cannot map ISA memory.\n"); return -1; } int ggbus_unmap(bst, handle, sz) bus_space_tag_t bst; bus_space_handle_t handle; bus_size_t sz; { return 0; } static ggbus_int_map[] = { 0, 0, 0, 0, GG2_IRQ3, GG2_IRQ4, GG2_IRQ5, GG2_IRQ6, GG2_IRQ7, 0, GG2_IRQ9, GG2_IRQ10, GG2_IRQ11, GG2_IRQ12, 0, GG2_IRQ14, GG2_IRQ15 }; int ggbusintr(v) void *v; { struct intrhand *ih = (struct intrhand *)v; int handled; if (!(*ih->ih_status & ih->ih_mask)) return 0; for (handled = 0; ih; ih = ih->ih_next) if ((*ih->ih_fun)(ih->ih_arg)) handled = 1; return handled; } void ggbus_attach_hook(parent, self, iba) struct device *parent, *self; struct isabus_attach_args *iba; { } void * ggbus_intr_establish(ic, irq, type, level, ih_fun, ih_arg, ih_what) void *ic; int irq; int type; int level; int (*ih_fun)(void *); void *ih_arg; char *ih_what; { struct intrhand **p, *c, *ih; struct ggbus_softc *sc = (struct ggbus_softc *)ic; /* no point in sleeping unless someone can free memory. */ ih = malloc(sizeof *ih, M_DEVBUF, cold ? M_NOWAIT : M_WAITOK); if (ih == NULL) panic("ggbus_intr_establish: can't malloc handler info"); if (irq > ICU_LEN || type == IST_NONE) panic("ggbus_intr_establish: bogus irq or type"); switch (sc->sc_intrsharetype[irq]) { case IST_EDGE: case IST_LEVEL: if (type == sc->sc_intrsharetype[irq]) break; case IST_PULSE: if (type != IST_NONE) panic("ggbus_intr_establish: can't share %s with %s", isa_intr_typename(sc->sc_intrsharetype[irq]), isa_intr_typename(type)); break; } /* * Figure out where to put the handler. * This is O(N^2), but we want to preserve the order, and N is * generally small. */ for (p = &sc->sc_ih[irq]; (c = *p) != NULL; p = &c->ih_next) ; /* * Poke the real handler in now. */ ih->ih_fun = ih_fun; ih->ih_arg = ih_arg; ih->ih_count = 0; ih->ih_next = NULL; ih->ih_irq = irq; ih->ih_what = ih_what; ih->ih_mask = 1 << ggbus_int_map[irq + 1]; ih->ih_status = sc->sc_status; ih->ih_isr.isr_intr = ggbusintr; ih->ih_isr.isr_arg = ih; ih->ih_isr.isr_ipl = 6; ih->ih_isr.isr_mapped_ipl = level; *p = ih; add_isr(&ih->ih_isr); return ih; } void ggbus_intr_disestablish(ic, arg) void *ic; void *arg; { struct intrhand *ih = arg; struct ggbus_softc *sc = (struct ggbus_softc *)ic; int irq = ih->ih_irq; struct intrhand **p, *q; if (irq > ICU_LEN) panic("ggbus_intr_establish: bogus irq"); remove_isr(&ih->ih_isr); /* * Remove the handler from the chain. * This is O(n^2), too. */ for (p = &sc->sc_ih[irq]; (q = *p) != NULL && q != ih; p = &q->ih_next) ; if (q) *p = q->ih_next; else panic("ggbus_intr_disestablish: handler not registered"); free(ih, M_DEVBUF); if (sc->sc_intrsharetype[irq] == NULL) sc->sc_intrsharetype[irq] = IST_NONE; }