1 /* $NetBSD: mainbus.c,v 1.11 2002/05/16 01:01:34 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Christopher G. Demetriou 17 * for the NetBSD Project. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/device.h> 35 #include <sys/extent.h> 36 #include <sys/malloc.h> 37 #include <sys/systm.h> 38 39 #include <machine/bus.h> 40 41 #include "opt_pci.h" 42 #include "mainbus.h" 43 #include "pci.h" 44 #include <dev/pci/pcivar.h> 45 #include <dev/pci/pciconf.h> 46 47 #if NCPU == 0 48 #error A cpu device is now required 49 #endif 50 51 static int mainbus_match (struct device *, struct cfdata *, void *); 52 static void mainbus_attach (struct device *, struct device *, void *); 53 54 struct cfattach mainbus_ca = { 55 sizeof(struct device), mainbus_match, mainbus_attach 56 }; 57 58 int mainbus_print (void *, const char *); 59 60 union mainbus_attach_args { 61 const char *mba_busname; /* first elem of all */ 62 struct pcibus_attach_args mba_pba; 63 }; 64 65 /* 66 * Probe for the mainbus; always succeeds. 67 */ 68 int 69 mainbus_match(struct device *parent, struct cfdata *match, void *aux) 70 { 71 return 1; 72 } 73 74 /* 75 * Attach the mainbus. 76 */ 77 void 78 mainbus_attach(struct device *parent, struct device *self, void *aux) 79 { 80 union mainbus_attach_args mba; 81 #if defined(PCI_NETBSD_CONFIGURE) 82 struct extent *ioext, *memext; 83 #endif 84 85 printf("\n"); 86 87 /* 88 * Always find the CPU 89 */ 90 mba.mba_busname = "cpu"; 91 config_found(self, &mba, mainbus_print); 92 93 /* 94 * XXX Note also that the presence of a PCI bus should 95 * XXX _always_ be checked, and if present the bus should be 96 * XXX 'found'. However, because of the structure of the code, 97 * XXX that's not currently possible. 98 */ 99 #if NPCI > 0 100 #if defined(PCI_NETBSD_CONFIGURE) 101 ioext = extent_create("pciio", 0x00008000, 0x0000ffff, M_DEVBUF, 102 NULL, 0, EX_NOWAIT); 103 memext = extent_create("pcimem", 0x00000000, 0x0fffffff, M_DEVBUF, 104 NULL, 0, EX_NOWAIT); 105 pci_configure_bus(0, ioext, memext, NULL, 0, 32); 106 extent_destroy(ioext); 107 extent_destroy(memext); 108 #endif 109 mba.mba_pba.pba_busname = "pci"; 110 mba.mba_pba.pba_iot = &bebox_io_bs_tag; 111 mba.mba_pba.pba_memt = &bebox_mem_bs_tag; 112 mba.mba_pba.pba_dmat = &pci_bus_dma_tag; 113 mba.mba_pba.pba_bus = 0; 114 mba.mba_pba.pba_bridgetag = NULL; 115 mba.mba_pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 116 config_found(self, &mba.mba_pba, mainbus_print); 117 #endif 118 } 119 120 static int cpu_match(struct device *, struct cfdata *, void *); 121 static void cpu_attach(struct device *, struct device *, void *); 122 123 struct cfattach cpu_ca = { 124 sizeof(struct device), cpu_match, cpu_attach 125 }; 126 127 extern struct cfdriver cpu_cd; 128 129 int 130 cpu_match(struct device *parent, struct cfdata *cf, void *aux) 131 { 132 union mainbus_attach_args *mba = aux; 133 134 if (strcmp(mba->mba_busname, cpu_cd.cd_name) != 0) 135 return 0; 136 137 if (cpu_info_store.ci_dev != NULL) 138 return 0; 139 140 return 1; 141 } 142 143 void 144 cpu_attach(struct device *parent, struct device *self, void *aux) 145 { 146 (void) cpu_attach_common(self, 0); 147 } 148 149 int 150 mainbus_print(void *aux, const char *pnp) 151 { 152 union mainbus_attach_args *mba = aux; 153 154 if (pnp) 155 printf("%s at %s", mba->mba_busname, pnp); 156 if (!strcmp(mba->mba_busname, "pci")) 157 printf(" bus %d", mba->mba_pba.pba_bus); 158 return (UNCONF); 159 } 160