obmem.c revision 1.12
1 /* $NetBSD: obmem.c,v 1.12 2004/12/13 02:14:13 chs 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: obmem.c,v 1.12 2004/12/13 02:14:13 chs Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 46 #include <uvm/uvm_extern.h> 47 48 #include <machine/autoconf.h> 49 #include <machine/pmap.h> 50 51 #include <sun2/sun2/control.h> 52 #include <sun2/sun2/machdep.h> 53 54 static int obmem_match __P((struct device *, struct cfdata *, void *)); 55 static void obmem_attach __P((struct device *, struct device *, void *)); 56 57 struct obmem_softc { 58 struct device sc_dev; /* base device */ 59 bus_space_tag_t sc_bustag; /* parent bus tag */ 60 bus_dma_tag_t sc_dmatag; /* parent bus dma tag */ 61 }; 62 63 CFATTACH_DECL(obmem, sizeof(struct obmem_softc), 64 obmem_match, obmem_attach, NULL, NULL); 65 66 static int obmem_attached; 67 68 static paddr_t obmem_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t, 69 off_t, int, int)); 70 static int _obmem_bus_map __P((bus_space_tag_t, bus_type_t, bus_addr_t, 71 bus_size_t, int, 72 vaddr_t, bus_space_handle_t *)); 73 74 static struct sun68k_bus_space_tag obmem_space_tag = { 75 NULL, /* cookie */ 76 NULL, /* parent bus tag */ 77 _obmem_bus_map, /* bus_space_map */ 78 NULL, /* bus_space_unmap */ 79 NULL, /* bus_space_subregion */ 80 NULL, /* bus_space_barrier */ 81 obmem_bus_mmap, /* bus_space_mmap */ 82 NULL, /* bus_intr_establish */ 83 NULL, /* bus_space_peek_N */ 84 NULL /* bus_space_poke_N */ 85 }; 86 87 static int 88 obmem_match(parent, cf, aux) 89 struct device *parent; 90 struct cfdata *cf; 91 void *aux; 92 { 93 struct mainbus_attach_args *ma = aux; 94 95 if (obmem_attached) 96 return 0; 97 98 return (ma->ma_name == NULL || strcmp(cf->cf_name, ma->ma_name) == 0); 99 } 100 101 static void 102 obmem_attach(parent, self, aux) 103 struct device *parent; 104 struct device *self; 105 void *aux; 106 { 107 struct mainbus_attach_args *ma = aux; 108 struct obmem_softc *sc = (struct obmem_softc *)self; 109 struct obmem_attach_args obma; 110 const char *const *cpp; 111 static const char *const special[] = { 112 /* find these first */ 113 NULL 114 }; 115 116 obmem_attached = 1; 117 118 printf("\n"); 119 120 sc->sc_bustag = ma->ma_bustag; 121 sc->sc_dmatag = ma->ma_dmatag; 122 123 obmem_space_tag.cookie = sc; 124 obmem_space_tag.parent = sc->sc_bustag; 125 126 /* 127 * Prepare the skeleton attach arguments for our devices. 128 * The values we give in the locators are indications to 129 * sun68k_bus_search about which locators must and must not 130 * be defined. 131 */ 132 obma = *ma; 133 obma.obma_bustag = &obmem_space_tag; 134 obma.obma_paddr = LOCATOR_REQUIRED; 135 obma.obma_pri = LOCATOR_OPTIONAL; 136 137 /* Find all `early' obmem devices */ 138 for (cpp = special; *cpp != NULL; cpp++) { 139 obma.obma_name = *cpp; 140 (void)config_search(sun68k_bus_search, self, &obma); 141 } 142 143 /* Find all other obmem devices */ 144 obma.obma_name = NULL; 145 (void)config_search(sun68k_bus_search, self, &obma); 146 } 147 148 int 149 _obmem_bus_map(t, btype, paddr, size, flags, vaddr, hp) 150 bus_space_tag_t t; 151 bus_type_t btype; 152 bus_addr_t paddr; 153 bus_size_t size; 154 int flags; 155 vaddr_t vaddr; 156 bus_space_handle_t *hp; 157 { 158 struct obmem_softc *sc = t->cookie; 159 160 return (bus_space_map2(sc->sc_bustag, PMAP_OBMEM, paddr, 161 size, flags, vaddr, hp)); 162 } 163 164 paddr_t 165 obmem_bus_mmap(t, btype, paddr, off, prot, flags) 166 bus_space_tag_t t; 167 bus_type_t btype; 168 bus_addr_t paddr; 169 off_t off; 170 int prot; 171 int flags; 172 { 173 struct obmem_softc *sc = t->cookie; 174 175 return (bus_space_mmap2(sc->sc_bustag, PMAP_OBMEM, paddr, off, 176 prot, flags)); 177 } 178
Indexes created Fri Sep 26 20:09:58 GMT 2025