1 /* $NetBSD: mainbus.c,v 1.8 2009/03/18 16:00:13 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 "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/extent.h> 41 #include <sys/systm.h> 42 #include <sys/device.h> 43 #include <sys/malloc.h> 44 45 #include <machine/autoconf.h> 46 #include <machine/bus.h> 47 #include <machine/isa_machdep.h> 48 49 #include <dev/pci/pcivar.h> 50 #include <dev/pci/pciconf.h> 51 52 int mainbus_match(device_t, cfdata_t, void *); 53 void mainbus_attach(device_t, device_t, void *); 54 55 struct mainbus_softc { 56 device_t sc_dev; /* device tree glue */ 57 }; 58 59 CFATTACH_DECL_NEW(mainbus, sizeof(struct mainbus_softc), 60 mainbus_match, mainbus_attach, NULL, NULL); 61 62 int mainbus_print(void *, const char *); 63 64 union mainbus_attach_args { 65 const char *mba_busname; /* first elem of all */ 66 struct pcibus_attach_args mba_pba; 67 }; 68 69 /* There can be only one. */ 70 int mainbus_found = 0; 71 struct powerpc_isa_chipset genppc_ict; 72 struct genppc_pci_chipset *genppc_pct; 73 74 /* 75 * Probe for the mainbus; always succeeds. 76 */ 77 int 78 mainbus_match(device_t parent, cfdata_t match, void *aux) 79 { 80 81 if (mainbus_found) 82 return 0; 83 return 1; 84 } 85 86 /* 87 * Attach the mainbus. 88 */ 89 void 90 mainbus_attach(device_t parent, device_t self, void *aux) 91 { 92 struct mainbus_softc *sc = device_private(self); 93 union mainbus_attach_args mba; 94 struct confargs ca; 95 #if NPCI > 0 96 #ifdef PCI_NETBSD_CONFIGURE 97 struct extent *ioext, *memext; 98 #endif 99 #endif 100 101 mainbus_found = 1; 102 103 aprint_normal("\n"); 104 105 sc->sc_dev = self; 106 ca.ca_name = "cpu"; 107 ca.ca_node = 0; 108 config_found_ia(self, "mainbus", &ca, mainbus_print); 109 110 #if NOBIO > 0 111 obio_reserve_resource_map(); 112 #endif 113 114 /* 115 * XXX Note also that the presence of a PCI bus should 116 * XXX _always_ be checked, and if present the bus should be 117 * XXX 'found'. However, because of the structure of the code, 118 * XXX that's not currently possible. 119 */ 120 #if NPCI > 0 121 genppc_pct = malloc(sizeof(struct genppc_pci_chipset), M_DEVBUF, 122 M_NOWAIT); 123 KASSERT(genppc_pct != NULL); 124 ibmnws_pci_get_chipset_tag_indirect (genppc_pct); 125 126 #ifdef PCI_NETBSD_CONFIGURE 127 ioext = extent_create("pciio", 0x00008000, 0x0000ffff, M_DEVBUF, 128 NULL, 0, EX_NOWAIT); 129 memext = extent_create("pcimem", 0x00000000, 0x0fffffff, M_DEVBUF, 130 NULL, 0, EX_NOWAIT); 131 132 pci_configure_bus(genppc_pct, ioext, memext, NULL, 0, CACHELINESIZE); 133 134 extent_destroy(ioext); 135 extent_destroy(memext); 136 #endif 137 138 memset(&mba, 0, sizeof(mba)); 139 mba.mba_pba.pba_iot = &prep_io_space_tag; 140 mba.mba_pba.pba_memt = &prep_mem_space_tag; 141 mba.mba_pba.pba_dmat = &pci_bus_dma_tag; 142 mba.mba_pba.pba_dmat64 = NULL; 143 mba.mba_pba.pba_pc = genppc_pct; 144 mba.mba_pba.pba_bus = 0; 145 mba.mba_pba.pba_bridgetag = NULL; 146 mba.mba_pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED; 147 config_found_ia(self, "pcibus", &mba.mba_pba, pcibusprint); 148 #endif 149 150 #if NOBIO > 0 151 #if 0 152 obio_reserve_resource_unmap(); 153 154 if (platform->obiodevs != obiodevs_nodev) { 155 memset(&mba, 0, sizeof(mba)); 156 mba.mba_busname = "obio"; /* XXX needs placeholder in pba */ 157 mba.mba_pba.pba_iot = &isa_io_space_tag; 158 mba.mba_pba.pba_memt = &isa_mem_space_tag; 159 config_found_ia(self, "mainbus", &mba.mba_pba, mainbus_print); 160 } 161 #endif 162 #endif 163 } 164 165 int 166 mainbus_print(void *aux, const char *pnp) 167 { 168 union mainbus_attach_args *mba = aux; 169 170 if (pnp) 171 aprint_normal("%s at %s", mba->mba_busname, pnp); 172 173 return (UNCONF); 174 } 175