1 /* $NetBSD: mainbus.c,v 1.35 2021/08/07 16:18:47 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 1.35 2021/08/07 16:18:47 thorpej Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/device.h> 39 #include <sys/kmem.h> 40 41 #include <machine/autoconf.h> 42 #include <sys/bus.h> 43 44 #include "pci.h" 45 #include "opt_pci.h" 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pciconf.h> 48 #include <machine/pci_machdep.h> 49 #include <machine/isa_machdep.h> 50 51 int mainbus_match(device_t, cfdata_t, void *); 52 void mainbus_attach(device_t, device_t, void *); 53 54 CFATTACH_DECL_NEW(mainbus, 0, 55 mainbus_match, mainbus_attach, NULL, NULL); 56 57 int mainbus_print (void *, const char *); 58 59 union mainbus_attach_args { 60 const char *mba_busname; /* first elem of all */ 61 struct pcibus_attach_args mba_pba; 62 }; 63 64 65 /* There can be only one */ 66 int mainbus_found = 0; 67 struct powerpc_isa_chipset genppc_ict; 68 struct genppc_pci_chipset *genppc_pct; 69 70 #define PCI_IO_START 0x00008000 71 #define PCI_IO_END 0x0000ffff 72 #define PCI_IO_SIZE ((PCI_IO_END - PCI_IO_START) + 1) 73 74 #define PCI_MEM_START 0x00000000 75 #define PCI_MEM_END 0x0fffffff 76 #define PCI_MEM_SIZE ((PCI_MEM_END - PCI_MEM_START) + 1) 77 78 /* 79 * Probe for the mainbus; always succeeds. 80 */ 81 int 82 mainbus_match(device_t parent, cfdata_t match, void *aux) 83 { 84 return 1; 85 } 86 87 /* 88 * Attach the mainbus. 89 */ 90 void 91 mainbus_attach(device_t parent, device_t self, void *aux) 92 { 93 union mainbus_attach_args mba; 94 struct confargs ca; 95 96 #if NPCI > 0 97 struct genppc_pci_chipset_businfo *pbi; 98 #endif 99 100 mainbus_found = 1; 101 102 aprint_normal("\n"); 103 104 #if defined(RESIDUAL_DATA_DUMP) 105 print_residual_device_info(); 106 #endif 107 108 /* 109 * Always find the CPU 110 */ 111 ca.ca_name = "cpu"; 112 ca.ca_node = 0; 113 config_found(self, &ca, mainbus_print, 114 CFARGS(.iattr = "mainbus")); 115 ca.ca_name = "cpu"; 116 ca.ca_node = 1; 117 config_found(self, &ca, mainbus_print, 118 CFARGS(.iattr = "mainbus")); 119 120 /* 121 * XXX Note also that the presence of a PCI bus should 122 * XXX _always_ be checked, and if present the bus should be 123 * XXX 'found'. However, because of the structure of the code, 124 * XXX that's not currently possible. 125 */ 126 127 #if NPCI > 0 128 genppc_pct = kmem_alloc(sizeof(struct genppc_pci_chipset), KM_SLEEP); 129 bebox_pci_get_chipset_tag(genppc_pct); 130 131 pbi = kmem_alloc(sizeof(struct genppc_pci_chipset_businfo), KM_SLEEP); 132 pbi->pbi_properties = prop_dictionary_create(); 133 KASSERT(pbi->pbi_properties != NULL); 134 135 SIMPLEQ_INIT(&genppc_pct->pc_pbi); 136 SIMPLEQ_INSERT_TAIL(&genppc_pct->pc_pbi, pbi, next); 137 138 #ifdef PCI_NETBSD_CONFIGURE 139 struct pciconf_resources *pcires = pciconf_resource_init(); 140 141 pciconf_resource_add(pcires, PCICONF_RESOURCE_IO, 142 PCI_IO_START, PCI_IO_SIZE); 143 pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM, 144 PCI_MEM_START, PCI_MEM_SIZE); 145 146 pci_configure_bus(genppc_pct, pcires, 0, CACHELINESIZE); 147 148 pciconf_resource_fini(pcires); 149 #endif /* PCI_NETBSD_CONFIGURE */ 150 #endif /* NPCI */ 151 152 #if NPCI > 0 153 memset(&mba, 0, sizeof(mba)); 154 mba.mba_pba.pba_iot = &prep_io_space_tag; 155 mba.mba_pba.pba_memt = &prep_mem_space_tag; 156 mba.mba_pba.pba_dmat = &pci_bus_dma_tag; 157 mba.mba_pba.pba_dmat64 = NULL; 158 mba.mba_pba.pba_pc = genppc_pct; 159 mba.mba_pba.pba_bus = 0; 160 mba.mba_pba.pba_bridgetag = NULL; 161 mba.mba_pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY; 162 config_found(self, &mba.mba_pba, pcibusprint, 163 CFARGS(.iattr = "pcibus")); 164 #endif /* NPCI */ 165 166 #ifdef RESIDUAL_DATA_DUMP 167 SIMPLEQ_FOREACH(pbi, &genppc_pct->pc_pbi, next) 168 printf("%s\n", prop_dictionary_externalize(pbi->pbi_properties)); 169 #endif 170 171 } 172 173 int 174 mainbus_print(void *aux, const char *pnp) 175 { 176 177 if (pnp) 178 aprint_normal("cpu at %s", pnp); 179 return (UNCONF); 180 } 181
Indexes created Sun Oct 25 00:26:45 UTC 2026