1 /* $NetBSD: mainbus.c,v 1.17 2021/08/07 16:18:56 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 "opt_pci.h" 34 35 /* #include "obio.h" */ 36 #include "pci.h" 37 #include "isa.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 #include <sys/kmem.h> 43 44 #include <machine/autoconf.h> 45 #include <sys/bus.h> 46 #include <machine/isa_machdep.h> 47 48 #include <dev/pci/pcivar.h> 49 #include <dev/pci/pciconf.h> 50 51 int mainbus_match(device_t, cfdata_t, void *); 52 void mainbus_attach(device_t, device_t, void *); 53 54 struct mainbus_softc { 55 device_t sc_dev; /* device tree glue */ 56 }; 57 58 CFATTACH_DECL_NEW(mainbus, sizeof(struct mainbus_softc), 59 mainbus_match, mainbus_attach, NULL, NULL); 60 61 int mainbus_print(void *, const char *); 62 63 union mainbus_attach_args { 64 const char *mba_busname; /* first elem of all */ 65 struct pcibus_attach_args mba_pba; 66 }; 67 68 /* There can be only one. */ 69 int mainbus_found = 0; 70 struct powerpc_isa_chipset genppc_ict; 71 struct genppc_pci_chipset *genppc_pct; 72 73 #define PCI_IO_START 0x00008000 74 #define PCI_IO_END 0x0000ffff 75 #define PCI_IO_SIZE ((PCI_IO_END - PCI_IO_START) + 1) 76 77 #define PCI_MEM_START 0x00000000 78 #define PCI_MEM_END 0x0fffffff 79 #define PCI_MEM_SIZE ((PCI_MEM_END - PCI_MEM_START) + 1) 80 81 /* 82 * Probe for the mainbus; always succeeds. 83 */ 84 int 85 mainbus_match(device_t parent, cfdata_t match, void *aux) 86 { 87 88 if (mainbus_found) 89 return 0; 90 return 1; 91 } 92 93 /* 94 * Attach the mainbus. 95 */ 96 void 97 mainbus_attach(device_t parent, device_t self, void *aux) 98 { 99 struct mainbus_softc *sc = device_private(self); 100 union mainbus_attach_args mba; 101 struct confargs ca; 102 103 mainbus_found = 1; 104 105 aprint_normal("\n"); 106 107 sc->sc_dev = self; 108 ca.ca_name = "cpu"; 109 ca.ca_node = 0; 110 config_found(self, &ca, mainbus_print, 111 CFARGS(.iattr = "mainbus")); 112 113 #if NOBIO > 0 114 obio_reserve_resource_map(); 115 #endif 116 117 /* 118 * XXX Note also that the presence of a PCI bus should 119 * XXX _always_ be checked, and if present the bus should be 120 * XXX 'found'. However, because of the structure of the code, 121 * XXX that's not currently possible. 122 */ 123 #if NPCI > 0 124 genppc_pct = kmem_alloc(sizeof(struct genppc_pci_chipset), KM_SLEEP); 125 ibmnws_pci_get_chipset_tag_indirect (genppc_pct); 126 127 #ifdef PCI_NETBSD_CONFIGURE 128 struct pciconf_resources *pcires = pciconf_resource_init(); 129 130 pciconf_resource_add(pcires, PCICONF_RESOURCE_IO, 131 PCI_IO_START, PCI_IO_SIZE); 132 pciconf_resource_add(pcires, PCICONF_RESOURCE_MEM, 133 PCI_MEM_START, PCI_MEM_SIZE); 134 135 pci_configure_bus(genppc_pct, pcires, 0, CACHELINESIZE); 136 137 pciconf_resource_fini(pcires); 138 #endif 139 140 memset(&mba, 0, sizeof(mba)); 141 mba.mba_pba.pba_iot = &prep_io_space_tag; 142 mba.mba_pba.pba_memt = &prep_mem_space_tag; 143 mba.mba_pba.pba_dmat = &pci_bus_dma_tag; 144 mba.mba_pba.pba_dmat64 = NULL; 145 mba.mba_pba.pba_pc = genppc_pct; 146 mba.mba_pba.pba_bus = 0; 147 mba.mba_pba.pba_bridgetag = NULL; 148 mba.mba_pba.pba_flags = PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY; 149 config_found(self, &mba.mba_pba, pcibusprint, 150 CFARGS(.iattr = "pcibus")); 151 #endif 152 153 #if NOBIO > 0 154 #if 0 155 obio_reserve_resource_unmap(); 156 157 if (platform->obiodevs != obiodevs_nodev) { 158 memset(&mba, 0, sizeof(mba)); 159 mba.mba_busname = "obio"; /* XXX needs placeholder in pba */ 160 mba.mba_pba.pba_iot = &isa_io_space_tag; 161 mba.mba_pba.pba_memt = &isa_mem_space_tag; 162 config_found(self, &mba.mba_pba, mainbus_print, 163 CFARGS(.iattr = "mainbus")); 164 } 165 #endif 166 #endif 167 } 168 169 int 170 mainbus_print(void *aux, const char *pnp) 171 { 172 union mainbus_attach_args *mba = aux; 173 174 if (pnp) 175 aprint_normal("%s at %s", mba->mba_busname, pnp); 176 177 return (UNCONF); 178 } 179
Indexes created Sun Oct 25 00:26:45 UTC 2026