obmem.c revision 1.1
1 /* $NetBSD: obmem.c,v 1.1 2001/04/06 15:05:57 fredette 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 int obmem_bus_mmap __P((bus_space_tag_t, bus_type_t, bus_addr_t, 65 int, bus_space_handle_t *)); 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 sun2_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 }; 80 81 static int 82 obmem_match(parent, cf, aux) 83 struct device *parent; 84 struct cfdata *cf; 85 void *aux; 86 { 87 struct confargs *ca = aux; 88 89 return (strcmp(cf->cf_driver->cd_name, ca->ca_name) == 0); 90 } 91 92 static void 93 obmem_attach(parent, self, aux) 94 struct device *parent; 95 struct device *self; 96 void *aux; 97 { 98 struct confargs *ca = aux; 99 struct obmem_softc *sc = (struct obmem_softc *)self; 100 struct confargs sub_ca; 101 const char *const *cpp; 102 static const char *const special[] = { 103 /* find these first */ 104 NULL 105 }; 106 107 /* 108 * There is only one obmem bus 109 */ 110 if (self->dv_unit > 0) { 111 printf(" unsupported\n"); 112 return; 113 } 114 printf("\n"); 115 116 sc->sc_bustag = ca->ca_bustag; 117 sc->sc_dmatag = ca->ca_dmatag; 118 119 obmem_space_tag.cookie = sc; 120 obmem_space_tag.parent = sc->sc_bustag; 121 122 /* 123 * Prepare the skeleton attach arguments for our devices. 124 * The values we give in the locators are indications to 125 * sun2_bus_search about which locators must and must not 126 * be defined. 127 */ 128 sub_ca = *ca; 129 sub_ca.ca_bustag = &obmem_space_tag; 130 sub_ca.ca_intpri = LOCATOR_OPTIONAL; 131 sub_ca.ca_intvec = LOCATOR_FORBIDDEN; 132 133 /* Find all `early' obmem devices */ 134 for (cpp = special; *cpp != NULL; cpp++) { 135 sub_ca.ca_name = *cpp; 136 (void)config_search(sun2_bus_search, self, &sub_ca); 137 } 138 139 /* Find all other obmem devices */ 140 sub_ca.ca_name = NULL; 141 (void)config_search(sun2_bus_search, self, &sub_ca); 142 } 143 144 int 145 _obmem_bus_map(t, btype, paddr, size, flags, vaddr, hp) 146 bus_space_tag_t t; 147 bus_type_t btype; 148 bus_addr_t paddr; 149 bus_size_t size; 150 int flags; 151 vaddr_t vaddr; 152 bus_space_handle_t *hp; 153 { 154 struct obmem_softc *sc = t->cookie; 155 156 return (bus_space_map2(sc->sc_bustag, PMAP_OBMEM, paddr, 157 size, flags, vaddr, hp)); 158 } 159 160 int 161 obmem_bus_mmap(t, btype, paddr, flags, hp) 162 bus_space_tag_t t; 163 bus_type_t btype; 164 bus_addr_t paddr; 165 int flags; 166 bus_space_handle_t *hp; 167 { 168 struct obmem_softc *sc = t->cookie; 169 170 return (bus_space_mmap(sc->sc_bustag, PMAP_OBMEM, paddr, flags, hp)); 171 } 172
Indexes created Thu Sep 25 02:09:54 GMT 2025