1 /* $NetBSD: mainbus.c,v 1.40 2021/08/07 16:19:03 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/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.40 2021/08/07 16:19:03 thorpej Exp $"); 35 36 #include "opt_pci.h" 37 #include "opt_residual.h" 38 39 #include "pnpbus.h" 40 #include "pci.h" 41 #include "isa.h" 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/device.h> 46 #include <sys/kmem.h> 47 48 #include <machine/autoconf.h> 49 #include <sys/bus.h> 50 #include <machine/isa_machdep.h> 51 52 #include <dev/pci/pcivar.h> 53 #include <dev/pci/pciconf.h> 54 55 #include <prep/pnpbus/pnpbusvar.h> 56 57 #include <machine/platform.h> 58 #include <machine/residual.h> 59 60 int mainbus_match(device_t, cfdata_t, void *); 61 void mainbus_attach(device_t, device_t, void *); 62 63 CFATTACH_DECL_NEW(mainbus, 0, 64 mainbus_match, mainbus_attach, NULL, NULL); 65 66 int mainbus_print(void *, const char *); 67 68 union mainbus_attach_args { 69 const char *mba_busname; /* first elem of all */ 70 struct pcibus_attach_args mba_pba; 71 struct pnpbus_attach_args mba_paa; 72 }; 73 74 /* There can be only one. */ 75 int mainbus_found = 0; 76 struct powerpc_isa_chipset genppc_ict; 77 struct genppc_pci_chipset *genppc_pct; 78 79 #define PCI_IO_START 0x00008000 80 #define PCI_IO_END 0x0000ffff 81 #define PCI_IO_SIZE ((PCI_IO_END - PCI_IO_START) + 1) 82 83 #define PCI_MEM_START 0x00000000 84 #define PCI_MEM_END 0x0fffffff 85 #define PCI_MEM_SIZE ((PCI_MEM_END - PCI_MEM_START) + 1) 86 87 /* 88 * Probe for the mainbus; always succeeds. 89 */ 90 int 91 mainbus_match(device_t parent, cfdata_t match, void *aux) 92 { 93 94 if (mainbus_found) 95 return 0; 96 return 1; 97 } 98 99 /* 100 * Attach the mainbus. 101 */ 102 void 103 mainbus_attach(device_t parent, device_t self, void *aux) 104 { 105 union mainbus_attach_args mba; 106 struct confargs ca; 107 int i; 108 #if NPCI > 0 109 struct genppc_pci_chipset_businfo *pbi; 110 #endif 111 112 mainbus_found = 1; 113 114 aprint_normal("\n"); 115 116 #if defined(RESIDUAL_DATA_DUMP) 117 print_residual_device_info(); 118 #endif 119 120 for (i = 0; i < CPU_MAXNUM; i++) { 121 ca.ca_name = "cpu"; 122 ca.ca_node = i; 123 config_found(self, &ca, NULL, 124 CFARGS(.iattr = "mainbus")); 125 } 126 127 /* 128 * XXX Note also that the presence of a PCI bus should 129 * XXX _always_ be checked, and if present the bus should be 130 * XXX 'found'. However, because of the structure of the code, 131 * XXX that's not currently possible. 132 */ 133 #if NPCI > 0 134 genppc_pct = kmem_alloc(sizeof(struct genppc_pci_chipset), KM_SLEEP); 135 prep_pci_get_chipset_tag(genppc_pct); 136 137 pbi = kmem_alloc(sizeof(struct genppc_pci_chipset_businfo), KM_SLEEP); 138 pbi->pbi_properties = prop_dictionary_create(); 139 KASSERT(pbi->pbi_properties != NULL); 140 141 SIMPLEQ_INIT(&genppc_pct->pc_pbi); 142 SIMPLEQ_INSERT_TAIL(&genppc_pct->pc_pbi, pbi, next); 143 144 /* fix pci interrupt routings on some models */ 145 setup_pciroutinginfo(); 146 147 /* find the primary host bridge */ 148 setup_pciintr_map(pbi, 0, 0, 0); 149 150 #ifdef PCI_NETBSD_CONFIGURE 151 struct pciconf_resources *pcires = pciconf_resource_init(); 152 153 pciconf_resource_add(pcires, PCICONF_RESOURCE_IO, 154 PCI_IO_START, PCI_IO_SIZE); 155 pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM, 156 PCI_MEM_START, PCI_MEM_SIZE); 157 158 pci_configure_bus(genppc_pct, pcires, 0, CACHELINESIZE); 159 160 pciconf_resource_fini(pcires); 161 #endif /* PCI_NETBSD_CONFIGURE */ 162 #endif /* NPCI */ 163 164 /* scan pnpbus first */ 165 #if NPNPBUS > 0 166 mba.mba_paa.paa_name = "pnpbus"; 167 mba.mba_paa.paa_iot = &genppc_isa_io_space_tag; 168 mba.mba_paa.paa_memt = &genppc_isa_mem_space_tag; 169 mba.mba_paa.paa_ic = &genppc_ict; 170 mba.mba_paa.paa_dmat = &isa_bus_dma_tag; 171 config_found(self, &mba.mba_pba, mainbus_print, 172 CFARGS(.iattr = "mainbus")); 173 #endif /* NPNPBUS */ 174 175 #if NPCI > 0 176 memset(&mba, 0, sizeof(mba)); 177 mba.mba_pba._pba_busname = NULL; 178 mba.mba_pba.pba_iot = &prep_io_space_tag; 179 mba.mba_pba.pba_memt = &prep_mem_space_tag; 180 mba.mba_pba.pba_dmat = &pci_bus_dma_tag; 181 mba.mba_pba.pba_dmat64 = NULL; 182 mba.mba_pba.pba_pc = genppc_pct; 183 mba.mba_pba.pba_bus = 0; 184 mba.mba_pba.pba_bridgetag = NULL; 185 mba.mba_pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY; 186 config_found(self, &mba.mba_pba, pcibusprint, 187 CFARGS(.iattr = "pcibus")); 188 #endif /* NPCI */ 189 190 #ifdef RESIDUAL_DATA_DUMP 191 SIMPLEQ_FOREACH(pbi, &genppc_pct->pc_pbi, next) 192 printf("%s\n", prop_dictionary_externalize(pbi->pbi_properties)); 193 #endif 194 } 195 196 int 197 mainbus_print(void *aux, const char *pnp) 198 { 199 union mainbus_attach_args *mba = aux; 200 201 if (pnp) 202 aprint_normal("%s at %s", mba->mba_busname, pnp); 203 204 return (UNCONF); 205 } 206
Indexes created Sun Oct 25 00:26:45 UTC 2026