obmem.c revision 1.7
1 /* $NetBSD: obmem.c,v 1.7 2002/09/27 02:24:26 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 struct cfattach obmem_ca = { 61 sizeof(struct obmem_softc), obmem_match, obmem_attach 62 }; 63 64 static paddr_t obmem_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t, 65 off_t, int, int)); 66 static int _obmem_bus_map __P((bus_space_tag_t, bus_type_t, bus_addr_t, 67 bus_size_t, int, 68 vaddr_t, bus_space_handle_t *)); 69 70 static struct sun68k_bus_space_tag obmem_space_tag = { 71 NULL, /* cookie */ 72 NULL, /* parent bus tag */ 73 _obmem_bus_map, /* bus_space_map */ 74 NULL, /* bus_space_unmap */ 75 NULL, /* bus_space_subregion */ 76 NULL, /* bus_space_barrier */ 77 obmem_bus_mmap, /* bus_space_mmap */ 78 NULL, /* bus_intr_establish */ 79 NULL, /* bus_space_peek_N */ 80 NULL /* bus_space_poke_N */ 81 }; 82 83 static int 84 obmem_match(parent, cf, aux) 85 struct device *parent; 86 struct cfdata *cf; 87 void *aux; 88 { 89 struct mainbus_attach_args *ma = aux; 90 91 return (ma->ma_name == NULL || strcmp(cf->cf_name, ma->ma_name) == 0); 92 } 93 94 static void 95 obmem_attach(parent, self, aux) 96 struct device *parent; 97 struct device *self; 98 void *aux; 99 { 100 struct mainbus_attach_args *ma = aux; 101 struct obmem_softc *sc = (struct obmem_softc *)self; 102 struct obmem_attach_args obma; 103 const char *const *cpp; 104 static const char *const special[] = { 105 /* find these first */ 106 NULL 107 }; 108 109 /* 110 * There is only one obmem bus 111 */ 112 if (self->dv_unit > 0) { 113 printf(" unsupported\n"); 114 return; 115 } 116 printf("\n"); 117 118 sc->sc_bustag = ma->ma_bustag; 119 sc->sc_dmatag = ma->ma_dmatag; 120 121 obmem_space_tag.cookie = sc; 122 obmem_space_tag.parent = sc->sc_bustag; 123 124 /* 125 * Prepare the skeleton attach arguments for our devices. 126 * The values we give in the locators are indications to 127 * sun68k_bus_search about which locators must and must not 128 * be defined. 129 */ 130 obma = *ma; 131 obma.obma_bustag = &obmem_space_tag; 132 obma.obma_paddr = LOCATOR_REQUIRED; 133 obma.obma_pri = LOCATOR_OPTIONAL; 134 135 /* Find all `early' obmem devices */ 136 for (cpp = special; *cpp != NULL; cpp++) { 137 obma.obma_name = *cpp; 138 (void)config_search(sun68k_bus_search, self, &obma); 139 } 140 141 /* Find all other obmem devices */ 142 obma.obma_name = NULL; 143 (void)config_search(sun68k_bus_search, self, &obma); 144 } 145 146 int 147 _obmem_bus_map(t, btype, paddr, size, flags, vaddr, hp) 148 bus_space_tag_t t; 149 bus_type_t btype; 150 bus_addr_t paddr; 151 bus_size_t size; 152 int flags; 153 vaddr_t vaddr; 154 bus_space_handle_t *hp; 155 { 156 struct obmem_softc *sc = t->cookie; 157 158 return (bus_space_map2(sc->sc_bustag, PMAP_OBMEM, paddr, 159 size, flags, vaddr, hp)); 160 } 161 162 paddr_t 163 obmem_bus_mmap(t, btype, paddr, off, prot, flags) 164 bus_space_tag_t t; 165 bus_type_t btype; 166 bus_addr_t paddr; 167 off_t off; 168 int prot; 169 int flags; 170 { 171 struct obmem_softc *sc = t->cookie; 172 173 return (bus_space_mmap2(sc->sc_bustag, PMAP_OBMEM, paddr, off, 174 prot, flags)); 175 } 176
Indexes created Wed Sep 24 05:09:52 GMT 2025