/* $OpenBSD: upa.c,v 1.9 2010/11/11 17:58:23 miod Exp $ */ /* * Copyright (c) 2002 Jason L. Wright (jason@thought.net) * 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. * * 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. * * Effort sponsored in part by the Defense Advanced Research Projects * Agency (DARPA) and Air Force Research Laboratory, Air Force * Materiel Command, USAF, under agreement number F30602-01-2-0537. * */ #include #include #include #include #include #include #include #include #define _SPARC_BUS_DMA_PRIVATE #include #include #include struct upa_range { u_int64_t ur_space; u_int64_t ur_addr; u_int64_t ur_len; }; struct upa_softc { struct device sc_dev; bus_space_tag_t sc_bt; bus_space_handle_t sc_reg[3]; struct upa_range *sc_range; int sc_node; int sc_nrange; bus_space_tag_t sc_cbt; }; int upa_match(struct device *, void *, void *); void upa_attach(struct device *, struct device *, void *); struct cfattach upa_ca = { sizeof(struct upa_softc), upa_match, upa_attach }; struct cfdriver upa_cd = { NULL, "upa", DV_DULL }; int upa_print(void *, const char *); bus_space_tag_t upa_alloc_bus_tag(struct upa_softc *); int upa_bus_map(bus_space_tag_t, bus_space_tag_t, bus_addr_t, bus_size_t, int, bus_space_handle_t *); paddr_t upa_bus_mmap(bus_space_tag_t, bus_space_tag_t, bus_addr_t, off_t, int, int); int upa_match(struct device *parent, void *match, void *aux) { struct mainbus_attach_args *ma = aux; if (strcmp(ma->ma_name, "upa") == 0) return (1); return (0); } void upa_attach(struct device *parent, struct device *self, void *aux) { struct upa_softc *sc = (void *)self; struct mainbus_attach_args *ma = aux; int i, node; sc->sc_bt = ma->ma_bustag; sc->sc_node = ma->ma_node; for (i = 0; i < 3; i++) { if (i >= ma->ma_nreg) { printf(": no register %d\n", i); return; } if (bus_space_map(sc->sc_bt, ma->ma_reg[i].ur_paddr, ma->ma_reg[i].ur_len, 0, &sc->sc_reg[i])) { printf(": failed to map reg%d\n", i); return; } } if (getprop(sc->sc_node, "ranges", sizeof(struct upa_range), &sc->sc_nrange, (void **)&sc->sc_range)) panic("upa: can't get ranges"); printf("\n"); sc->sc_cbt = upa_alloc_bus_tag(sc); for (node = OF_child(sc->sc_node); node; node = OF_peer(node)) { char buf[32]; struct mainbus_attach_args map; bzero(&map, sizeof(map)); if (OF_getprop(node, "device_type", buf, sizeof(buf)) <= 0) continue; if (getprop(node, "reg", sizeof(*map.ma_reg), &map.ma_nreg, (void **)&map.ma_reg) != 0) continue; if (OF_getprop(node, "name", buf, sizeof(buf)) <= 0) continue; map.ma_node = node; map.ma_name = buf; map.ma_bustag = sc->sc_cbt; map.ma_dmatag = ma->ma_dmatag; config_found(&sc->sc_dev, &map, upa_print); } } int upa_print(void *args, const char *name) { struct mainbus_attach_args *ma = args; if (name) printf("\"%s\" at %s", ma->ma_name, name); return (UNCONF); } bus_space_tag_t upa_alloc_bus_tag(struct upa_softc *sc) { struct sparc_bus_space_tag *bt; bt = malloc(sizeof(*bt), M_DEVBUF, M_NOWAIT | M_ZERO); if (bt == NULL) panic("upa: couldn't alloc bus tag"); strlcpy(bt->name, sc->sc_dev.dv_xname, sizeof(bt->name)); bt->cookie = sc; bt->parent = sc->sc_bt; bt->asi = bt->parent->asi; bt->sasi = bt->parent->sasi; bt->sparc_bus_map = upa_bus_map; bt->sparc_bus_mmap = upa_bus_mmap; /* XXX bt->sparc_intr_establish = upa_intr_establish; */ return (bt); } int upa_bus_map(bus_space_tag_t t, bus_space_tag_t t0, bus_addr_t offset, bus_size_t size, int flags, bus_space_handle_t *hp) { struct upa_softc *sc = t->cookie; int i; if (t->parent == 0 || t->parent->sparc_bus_map == 0) { printf("\n__upa_bus_map: invalid parent"); return (EINVAL); } t = t->parent; if (flags & BUS_SPACE_MAP_PROMADDRESS) { return ((*t->sparc_bus_map) (t, t0, offset, size, flags, hp)); } for (i = 0; i < sc->sc_nrange; i++) { if (offset < sc->sc_range[i].ur_space) continue; if (offset >= (sc->sc_range[i].ur_space + sc->sc_range[i].ur_space)) continue; break; } if (i == sc->sc_nrange) return (EINVAL); offset -= sc->sc_range[i].ur_space; offset += sc->sc_range[i].ur_addr; return ((*t->sparc_bus_map)(t, t0, offset, size, flags, hp)); } paddr_t upa_bus_mmap(bus_space_tag_t t, bus_space_tag_t t0, bus_addr_t paddr, off_t off, int prot, int flags) { struct upa_softc *sc = t->cookie; int i; if (t->parent == 0 || t->parent->sparc_bus_map == 0) { printf("\n__upa_bus_map: invalid parent"); return (EINVAL); } t = t->parent; if (flags & BUS_SPACE_MAP_PROMADDRESS) return ((*t->sparc_bus_mmap)(t, t0, paddr, off, prot, flags)); for (i = 0; i < sc->sc_nrange; i++) { if (paddr + off < sc->sc_range[i].ur_space) continue; if (paddr + off >= (sc->sc_range[i].ur_space + sc->sc_range[i].ur_space)) continue; break; } if (i == sc->sc_nrange) return (EINVAL); paddr -= sc->sc_range[i].ur_space; paddr += sc->sc_range[i].ur_addr; return ((*t->sparc_bus_mmap)(t, t0, paddr, off, prot, flags)); }