obmem.c revision 1.13
1 /* $NetBSD: obmem.c,v 1.13 2005/01/22 15:36:09 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 1.13 2005/01/22 15:36:09 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(struct device *, struct cfdata *, void *); 55 static void obmem_attach(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(bus_space_tag_t, bus_type_t, bus_addr_t, 69 off_t, int, int); 70 static int _obmem_bus_map(bus_space_tag_t, bus_type_t, bus_addr_t, 71 bus_size_t, int, vaddr_t, bus_space_handle_t *); 72 73 static struct sun68k_bus_space_tag obmem_space_tag = { 74 NULL, /* cookie */ 75 NULL, /* parent bus tag */ 76 _obmem_bus_map, /* bus_space_map */ 77 NULL, /* bus_space_unmap */ 78 NULL, /* bus_space_subregion */ 79 NULL, /* bus_space_barrier */ 80 obmem_bus_mmap, /* bus_space_mmap */ 81 NULL, /* bus_intr_establish */ 82 NULL, /* bus_space_peek_N */ 83 NULL /* bus_space_poke_N */ 84 }; 85 86 static int 87 obmem_match(struct device *parent, struct cfdata *cf, void *aux) 88 { 89 struct mainbus_attach_args *ma = aux; 90 91 if (obmem_attached) 92 return 0; 93 94 return (ma->ma_name == NULL || strcmp(cf->cf_name, ma->ma_name) == 0); 95 } 96 97 static void 98 obmem_attach(struct device *parent, struct device *self, 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 obmem_attached = 1; 110 111 printf("\n"); 112 113 sc->sc_bustag = ma->ma_bustag; 114 sc->sc_dmatag = ma->ma_dmatag; 115 116 obmem_space_tag.cookie = sc; 117 obmem_space_tag.parent = sc->sc_bustag; 118 119 /* 120 * Prepare the skeleton attach arguments for our devices. 121 * The values we give in the locators are indications to 122 * sun68k_bus_search about which locators must and must not 123 * be defined. 124 */ 125 obma = *ma; 126 obma.obma_bustag = &obmem_space_tag; 127 obma.obma_paddr = LOCATOR_REQUIRED; 128 obma.obma_pri = LOCATOR_OPTIONAL; 129 130 /* Find all `early' obmem devices */ 131 for (cpp = special; *cpp != NULL; cpp++) { 132 obma.obma_name = *cpp; 133 (void)config_search(sun68k_bus_search, self, &obma); 134 } 135 136 /* Find all other obmem devices */ 137 obma.obma_name = NULL; 138 (void)config_search(sun68k_bus_search, self, &obma); 139 } 140 141 int 142 _obmem_bus_map(bus_space_tag_t t, bus_type_t btype, bus_addr_t paddr, 143 bus_size_t size, int flags, vaddr_t vaddr, bus_space_handle_t *hp) 144 { 145 struct obmem_softc *sc = t->cookie; 146 147 return (bus_space_map2(sc->sc_bustag, PMAP_OBMEM, paddr, 148 size, flags, vaddr, hp)); 149 } 150 151 paddr_t 152 obmem_bus_mmap(bus_space_tag_t t, bus_type_t btype, bus_addr_t paddr, off_t off, 153 int prot, int flags) 154 { 155 struct obmem_softc *sc = t->cookie; 156 157 return (bus_space_mmap2(sc->sc_bustag, PMAP_OBMEM, paddr, off, 158 prot, flags)); 159 } 160
Indexes created Wed Sep 24 05:09:52 GMT 2025