/* $NetBSD: vme.c,v 1.24 2021/08/07 16:19:06 thorpej Exp $ */ /*- * Copyright (c) 1996 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Gordon W. Ross. * * 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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 __KERNEL_RCSID(0, "$NetBSD: vme.c,v 1.24 2021/08/07 16:19:06 thorpej Exp $"); #include #include #include #include #define _SUN68K_BUS_DMA_PRIVATE #include #include #include #include #include /* Does this machine have a VME bus? */ extern int cpu_has_vme; /* * Convert vme unit number to bus type, * but only for supported bus types. * (See autoconf.h and vme.h) */ #define VME_UNITS 6 static const struct { int bustype; const char *name; int pmtype; vaddr_t base; vaddr_t mask; } vme_info[VME_UNITS] = { { BUS_VME16D16, "A16/D16", PMAP_VME16, VME16_BASE, VME16_MASK }, { BUS_VME16D32, "A16/D32", PMAP_VME32, VME16_BASE, VME16_MASK }, { BUS_VME24D16, "A24/D16", PMAP_VME16, VME24_BASE, VME24_MASK }, { BUS_VME24D32, "A24/D32", PMAP_VME32, VME24_BASE, VME24_MASK }, { BUS_VME32D16, "A32/D16", PMAP_VME16, VME32_BASE, VME32_MASK }, { BUS_VME32D32, "A32/D32", PMAP_VME32, VME32_BASE, VME32_MASK }, }; static int vme_match(device_t , cfdata_t, void *); static void vme_attach(device_t , device_t, void *); struct vme_softc { device_t sc_dev; bus_space_tag_t sc_bustag; bus_dma_tag_t sc_dmatag; int sc_bustype; }; CFATTACH_DECL_NEW(vme, sizeof(struct vme_softc), vme_match, vme_attach, NULL, NULL); static int vme_bus_map(bus_space_tag_t, bus_type_t, bus_addr_t, bus_size_t, int, vaddr_t, bus_space_handle_t *); static paddr_t vme_bus_mmap(bus_space_tag_t, bus_type_t, bus_addr_t, off_t, int, int); static int vme_dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t, struct proc *, int); static struct sun68k_bus_space_tag vme_space_tag = { NULL, /* cookie */ NULL, /* parent bus space tag */ vme_bus_map, /* bus_space_map */ NULL, /* bus_space_unmap */ NULL, /* bus_space_subregion */ NULL, /* bus_space_barrier */ vme_bus_mmap, /* bus_space_mmap */ NULL, /* bus_intr_establish */ NULL, /* bus_space_peek_N */ NULL /* bus_space_poke_N */ }; static struct sun68k_bus_dma_tag vme_dma_tag; static int vme_match(device_t parent, cfdata_t cf, void *aux) { struct confargs *ca = aux; int unit; if (cpu_has_vme == 0) return 0; unit = cf->cf_unit; if (unit >= VME_UNITS) return 0; if (ca->ca_bustype != vme_info[unit].bustype) return 0; return 1; } static void vme_attach(device_t parent, device_t self, void *aux) { struct confargs *ca = aux; struct vme_softc *sc = device_private(self); struct confargs vmea; int unit; sc->sc_dev = self; unit = device_unit(self); aprint_normal(": (%s)\n", vme_info[unit].name); sc->sc_bustag = ca->ca_bustag; sc->sc_dmatag = ca->ca_dmatag; sc->sc_bustype = unit; vme_space_tag.cookie = sc; vme_space_tag.parent = sc->sc_bustag; vme_dma_tag = *sc->sc_dmatag; vme_dma_tag._cookie = sc; vme_dma_tag._dmamap_load = vme_dmamap_load; vmea = *ca; vmea.ca_bustag = &vme_space_tag; vmea.ca_dmatag = &vme_dma_tag; /* We know ca_bustype == BUS_VMExx */ config_search(self, &vmea, CFARGS(.search = bus_scan)); } int vme_bus_map(bus_space_tag_t t, bus_type_t btype, bus_addr_t paddr, bus_size_t size, int flags, vaddr_t vaddr, bus_space_handle_t *hp) { struct vme_softc *sc = t->cookie; paddr_t pa; int bustype, pmtype; bustype = sc->sc_bustype; pa = paddr; pa &= vme_info[bustype].mask; pa |= vme_info[bustype].base; pmtype = vme_info[bustype].pmtype; return bus_space_map2(sc->sc_bustag, pmtype, pa, size, flags | _SUN68K_BUS_MAP_USE_PROM, vaddr, hp); } paddr_t vme_bus_mmap(bus_space_tag_t t, bus_type_t btype, bus_addr_t paddr, off_t off, int prot, int flags) { struct vme_softc *sc = t->cookie; paddr_t pa; int bustype, pmtype; bustype = sc->sc_bustype; pa = paddr; pa &= vme_info[bustype].mask; pa |= vme_info[bustype].base; pmtype = vme_info[bustype].pmtype; return bus_space_mmap2(sc->sc_bustag, pmtype, pa, off, prot, flags); } static int vme_dmamap_load(bus_dma_tag_t t, bus_dmamap_t map, void *buf, bus_size_t buflen, struct proc *p, int flags) { int error; error = _bus_dmamap_load(t, map, buf, buflen, p, flags); if (error == 0) map->dm_segs[0].ds_addr &= DVMA_VME_SLAVE_MASK; return error; }