1 /* $NetBSD: mainbus.c,v 1.24 2009/03/18 16:00:10 cegger 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/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.24 2009/03/18 16:00:10 cegger Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/extent.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 #include <sys/malloc.h> 41 42 #include <machine/autoconf.h> 43 #include <machine/bus.h> 44 45 #include "pci.h" 46 #include "opt_pci.h" 47 #include <dev/pci/pcivar.h> 48 #include <dev/pci/pciconf.h> 49 #include <machine/pci_machdep.h> 50 #include <machine/isa_machdep.h> 51 52 int mainbus_match(struct device *, struct cfdata *, void *); 53 void mainbus_attach(struct device *, struct device *, void *); 54 55 CFATTACH_DECL(mainbus, sizeof(struct device), 56 mainbus_match, mainbus_attach, NULL, NULL); 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 /* There can be only one */ 67 int mainbus_found = 0; 68 struct powerpc_isa_chipset genppc_ict; 69 struct genppc_pci_chipset *genppc_pct; 70 71 /* 72 * Probe for the mainbus; always succeeds. 73 */ 74 int 75 mainbus_match(struct device *parent, struct cfdata *match, void *aux) 76 { 77 return 1; 78 } 79 80 /* 81 * Attach the mainbus. 82 */ 83 void 84 mainbus_attach(struct device *parent, struct device *self, void *aux) 85 { 86 union mainbus_attach_args mba; 87 struct confargs ca; 88 89 #if NPCI > 0 90 struct genppc_pci_chipset_businfo *pbi; 91 #ifdef PCI_NETBSD_CONFIGURE 92 struct extent *ioext, *memext; 93 #endif 94 #endif 95 96 mainbus_found = 1; 97 98 aprint_normal("\n"); 99 100 101 #if defined(RESIDUAL_DATA_DUMP) 102 print_residual_device_info(); 103 #endif 104 105 /* 106 * Always find the CPU 107 */ 108 ca.ca_name = "cpu"; 109 ca.ca_node = 0; 110 config_found_ia(self, "mainbus", &ca, mainbus_print); 111 112 /* 113 * XXX Note also that the presence of a PCI bus should 114 * XXX _always_ be checked, and if present the bus should be 115 * XXX 'found'. However, because of the structure of the code, 116 * XXX that's not currently possible. 117 */ 118 119 #if NPCI > 0 120 genppc_pct = malloc(sizeof(struct genppc_pci_chipset), M_DEVBUF, 121 M_NOWAIT); 122 KASSERT(genppc_pct != NULL); 123 bebox_pci_get_chipset_tag(genppc_pct); 124 125 pbi = malloc(sizeof(struct genppc_pci_chipset_businfo), 126 M_DEVBUF, M_NOWAIT); 127 KASSERT(pbi != NULL); 128 pbi->pbi_properties = prop_dictionary_create(); 129 KASSERT(pbi->pbi_properties != NULL); 130 131 SIMPLEQ_INIT(&genppc_pct->pc_pbi); 132 SIMPLEQ_INSERT_TAIL(&genppc_pct->pc_pbi, pbi, next); 133 134 #ifdef PCI_NETBSD_CONFIGURE 135 ioext = extent_create("pciio", 0x00008000, 0x0000ffff, M_DEVBUF, 136 NULL, 0, EX_NOWAIT); 137 memext = extent_create("pcimem", 0x00000000, 0x0fffffff, M_DEVBUF, 138 NULL, 0, EX_NOWAIT); 139 140 pci_configure_bus(genppc_pct, ioext, memext, NULL, 0, CACHELINESIZE); 141 142 extent_destroy(ioext); 143 extent_destroy(memext); 144 #endif /* PCI_NETBSD_CONFIGURE */ 145 #endif /* NPCI */ 146 147 #if NPCI > 0 148 memset(&mba, 0, sizeof(mba)); 149 mba.mba_pba.pba_iot = &prep_io_space_tag; 150 mba.mba_pba.pba_memt = &prep_mem_space_tag; 151 mba.mba_pba.pba_dmat = &pci_bus_dma_tag; 152 mba.mba_pba.pba_dmat64 = NULL; 153 mba.mba_pba.pba_pc = genppc_pct; 154 mba.mba_pba.pba_bus = 0; 155 mba.mba_pba.pba_bridgetag = NULL; 156 mba.mba_pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 157 config_found_ia(self, "pcibus", &mba.mba_pba, pcibusprint); 158 #endif /* NPCI */ 159 160 #ifdef RESIDUAL_DATA_DUMP 161 SIMPLEQ_FOREACH(pbi, &genppc_pct->pc_pbi, next) 162 printf("%s\n", prop_dictionary_externalize(pbi->pbi_properties)); 163 #endif 164 165 } 166 167 int 168 mainbus_print(void *aux, const char *pnp) 169 { 170 171 if (pnp) 172 aprint_normal("cpu at %s", pnp); 173 return (UNCONF); 174 } 175