1 /* $NetBSD: obmem.c,v 1.10 2002/10/02 16:02:24 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Adam Glass, Gordon W. Ross, and Matthew Fredette. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 43 #include <uvm/uvm_extern.h> 44 45 #include <machine/autoconf.h> 46 #include <machine/pmap.h> 47 48 #include <sun2/sun2/control.h> 49 #include <sun2/sun2/machdep.h> 50 51 static int obmem_match __P((struct device *, struct cfdata *, void *)); 52 static void obmem_attach __P((struct device *, struct device *, void *)); 53 54 struct obmem_softc { 55 struct device sc_dev; /* base device */ 56 bus_space_tag_t sc_bustag; /* parent bus tag */ 57 bus_dma_tag_t sc_dmatag; /* parent bus dma tag */ 58 }; 59 60 CFATTACH_DECL(obmem, sizeof(struct obmem_softc), 61 obmem_match, obmem_attach, NULL, NULL); 62 63 static paddr_t obmem_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t, 64 off_t, int, int)); 65 static int _obmem_bus_map __P((bus_space_tag_t, bus_type_t, bus_addr_t, 66 bus_size_t, int, 67 vaddr_t, bus_space_handle_t *)); 68 69 static struct sun68k_bus_space_tag obmem_space_tag = { 70 NULL, /* cookie */ 71 NULL, /* parent bus tag */ 72 _obmem_bus_map, /* bus_space_map */ 73 NULL, /* bus_space_unmap */ 74 NULL, /* bus_space_subregion */ 75 NULL, /* bus_space_barrier */ 76 obmem_bus_mmap, /* bus_space_mmap */ 77 NULL, /* bus_intr_establish */ 78 NULL, /* bus_space_peek_N */ 79 NULL /* bus_space_poke_N */ 80 }; 81 82 static int 83 obmem_match(parent, cf, aux) 84 struct device *parent; 85 struct cfdata *cf; 86 void *aux; 87 { 88 struct mainbus_attach_args *ma = aux; 89 90 return (ma->ma_name == NULL || strcmp(cf->cf_name, ma->ma_name) == 0); 91 } 92 93 static void 94 obmem_attach(parent, self, aux) 95 struct device *parent; 96 struct device *self; 97 void *aux; 98 { 99 struct mainbus_attach_args *ma = aux; 100 struct obmem_softc *sc = (struct obmem_softc *)self; 101 struct obmem_attach_args obma; 102 const char *const *cpp; 103 static const char *const special[] = { 104 /* find these first */ 105 NULL 106 }; 107 108 /* 109 * There is only one obmem bus 110 */ 111 if (self->dv_unit > 0) { 112 printf(" unsupported\n"); 113 return; 114 } 115 printf("\n"); 116 117 sc->sc_bustag = ma->ma_bustag; 118 sc->sc_dmatag = ma->ma_dmatag; 119 120 obmem_space_tag.cookie = sc; 121 obmem_space_tag.parent = sc->sc_bustag; 122 123 /* 124 * Prepare the skeleton attach arguments for our devices. 125 * The values we give in the locators are indications to 126 * sun68k_bus_search about which locators must and must not 127 * be defined. 128 */ 129 obma = *ma; 130 obma.obma_bustag = &obmem_space_tag; 131 obma.obma_paddr = LOCATOR_REQUIRED; 132 obma.obma_pri = LOCATOR_OPTIONAL; 133 134 /* Find all `early' obmem devices */ 135 for (cpp = special; *cpp != NULL; cpp++) { 136 obma.obma_name = *cpp; 137 (void)config_search(sun68k_bus_search, self, &obma); 138 } 139 140 /* Find all other obmem devices */ 141 obma.obma_name = NULL; 142 (void)config_search(sun68k_bus_search, self, &obma); 143 } 144 145 int 146 _obmem_bus_map(t, btype, paddr, size, flags, vaddr, hp) 147 bus_space_tag_t t; 148 bus_type_t btype; 149 bus_addr_t paddr; 150 bus_size_t size; 151 int flags; 152 vaddr_t vaddr; 153 bus_space_handle_t *hp; 154 { 155 struct obmem_softc *sc = t->cookie; 156 157 return (bus_space_map2(sc->sc_bustag, PMAP_OBMEM, paddr, 158 size, flags, vaddr, hp)); 159 } 160 161 paddr_t 162 obmem_bus_mmap(t, btype, paddr, off, prot, flags) 163 bus_space_tag_t t; 164 bus_type_t btype; 165 bus_addr_t paddr; 166 off_t off; 167 int prot; 168 int flags; 169 { 170 struct obmem_softc *sc = t->cookie; 171 172 return (bus_space_mmap2(sc->sc_bustag, PMAP_OBMEM, paddr, off, 173 prot, flags)); 174 } 175