ppb.c revision 1.15.2.2
1 1.15.2.2 mycroft /* $NetBSD: ppb.c,v 1.15.2.2 1997/08/30 06:53:59 mycroft Exp $ */ 2 1.15.2.2 mycroft 3 1.15.2.2 mycroft /* 4 1.15.2.2 mycroft * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5 1.15.2.2 mycroft * 6 1.15.2.2 mycroft * Redistribution and use in source and binary forms, with or without 7 1.15.2.2 mycroft * modification, are permitted provided that the following conditions 8 1.15.2.2 mycroft * are met: 9 1.15.2.2 mycroft * 1. Redistributions of source code must retain the above copyright 10 1.15.2.2 mycroft * notice, this list of conditions and the following disclaimer. 11 1.15.2.2 mycroft * 2. Redistributions in binary form must reproduce the above copyright 12 1.15.2.2 mycroft * notice, this list of conditions and the following disclaimer in the 13 1.15.2.2 mycroft * documentation and/or other materials provided with the distribution. 14 1.15.2.2 mycroft * 3. All advertising materials mentioning features or use of this software 15 1.15.2.2 mycroft * must display the following acknowledgement: 16 1.15.2.2 mycroft * This product includes software developed by Christopher G. Demetriou 17 1.15.2.2 mycroft * for the NetBSD Project. 18 1.15.2.2 mycroft * 4. The name of the author may not be used to endorse or promote products 19 1.15.2.2 mycroft * derived from this software without specific prior written permission 20 1.15.2.2 mycroft * 21 1.15.2.2 mycroft * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 1.15.2.2 mycroft * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 1.15.2.2 mycroft * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 1.15.2.2 mycroft * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 1.15.2.2 mycroft * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 1.15.2.2 mycroft * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 1.15.2.2 mycroft * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 1.15.2.2 mycroft * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 1.15.2.2 mycroft * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 1.15.2.2 mycroft * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 1.15.2.2 mycroft */ 32 1.15.2.2 mycroft 33 1.15.2.2 mycroft /* 34 1.15.2.2 mycroft * XXX NOTE: 35 1.15.2.2 mycroft * XXX PROPER OPERATION OF DEVICES BEHIND PPB'S WHICH USE INTERRUPTS 36 1.15.2.2 mycroft * XXX ON SYSTEMS OTHER THAN THE i386 IS NOT POSSIBLE AT THIS TIME. 37 1.15.2.2 mycroft * XXX There needs to be some support for 'swizzling' the interrupt 38 1.15.2.2 mycroft * XXX pin. In general, pci_map_int() has to have a different 39 1.15.2.2 mycroft * XXX interface. 40 1.15.2.2 mycroft */ 41 1.15.2.2 mycroft 42 1.15.2.2 mycroft #include <sys/param.h> 43 1.15.2.2 mycroft #include <sys/systm.h> 44 1.15.2.2 mycroft #include <sys/kernel.h> 45 1.15.2.2 mycroft #include <sys/device.h> 46 1.15.2.2 mycroft 47 1.15.2.2 mycroft #include <dev/pci/pcireg.h> 48 1.15.2.2 mycroft #include <dev/pci/pcivar.h> 49 1.15.2.2 mycroft #include <dev/pci/pcidevs.h> 50 1.15.2.2 mycroft #include <dev/pci/ppbreg.h> 51 1.15.2.2 mycroft 52 1.15.2.2 mycroft #ifdef __BROKEN_INDIRECT_CONFIG 53 1.15.2.2 mycroft int ppbmatch __P((struct device *, void *, void *)); 54 1.15.2.2 mycroft #else 55 1.15.2.2 mycroft int ppbmatch __P((struct device *, struct cfdata *, void *)); 56 1.15.2.2 mycroft #endif 57 1.15.2.2 mycroft void ppbattach __P((struct device *, struct device *, void *)); 58 1.15.2.2 mycroft 59 1.15.2.2 mycroft struct cfattach ppb_ca = { 60 1.15.2.2 mycroft sizeof(struct device), ppbmatch, ppbattach 61 1.15.2.2 mycroft }; 62 1.15.2.2 mycroft 63 1.15.2.2 mycroft struct cfdriver ppb_cd = { 64 1.15.2.2 mycroft NULL, "ppb", DV_DULL 65 1.15.2.2 mycroft }; 66 1.15.2.2 mycroft 67 1.15.2.2 mycroft int ppbprint __P((void *, const char *pnp)); 68 1.15.2.2 mycroft 69 1.15.2.2 mycroft int 70 1.15.2.2 mycroft ppbmatch(parent, match, aux) 71 1.15.2.2 mycroft struct device *parent; 72 1.15.2.2 mycroft #ifdef __BROKEN_INDIRECT_CONFIG 73 1.15.2.2 mycroft void *match; 74 1.15.2.2 mycroft #else 75 1.15.2.2 mycroft struct cfdata *match; 76 1.15.2.2 mycroft #endif 77 1.15.2.2 mycroft void *aux; 78 1.15.2.2 mycroft { 79 1.15.2.2 mycroft struct pci_attach_args *pa = aux; 80 1.15.2.2 mycroft 81 1.15.2.2 mycroft /* 82 1.15.2.2 mycroft * Check the ID register to see that it's a PCI bridge. 83 1.15.2.2 mycroft * If it is, we assume that we can deal with it; it _should_ 84 1.15.2.2 mycroft * work in a standardized way... 85 1.15.2.2 mycroft */ 86 1.15.2.2 mycroft if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && 87 1.15.2.2 mycroft PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_PCI) 88 1.15.2.2 mycroft return (1); 89 1.15.2.2 mycroft 90 1.15.2.2 mycroft return (0); 91 1.15.2.2 mycroft } 92 1.15.2.2 mycroft 93 1.15.2.2 mycroft void 94 1.15.2.2 mycroft ppbattach(parent, self, aux) 95 1.15.2.2 mycroft struct device *parent, *self; 96 1.15.2.2 mycroft void *aux; 97 1.15.2.2 mycroft { 98 1.15.2.2 mycroft struct pci_attach_args *pa = aux; 99 1.15.2.2 mycroft pci_chipset_tag_t pc = pa->pa_pc; 100 1.15.2.2 mycroft struct pcibus_attach_args pba; 101 1.15.2.2 mycroft pcireg_t busdata; 102 1.15.2.2 mycroft char devinfo[256]; 103 1.15.2.2 mycroft 104 1.15.2.2 mycroft pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 105 1.15.2.2 mycroft printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 106 1.15.2.2 mycroft 107 1.15.2.2 mycroft busdata = pci_conf_read(pc, pa->pa_tag, PPB_REG_BUSINFO); 108 1.15.2.2 mycroft 109 1.15.2.2 mycroft if (PPB_BUSINFO_SECONDARY(busdata) == 0) { 110 1.15.2.2 mycroft printf("%s: not configured by system firmware\n", 111 1.15.2.2 mycroft self->dv_xname); 112 1.15.2.2 mycroft return; 113 1.15.2.2 mycroft } 114 1.15.2.2 mycroft 115 1.15.2.2 mycroft #if 0 116 1.15.2.2 mycroft /* 117 1.15.2.2 mycroft * XXX can't do this, because we're not given our bus number 118 1.15.2.2 mycroft * (we shouldn't need it), and because we've no way to 119 1.15.2.2 mycroft * decompose our tag. 120 1.15.2.2 mycroft */ 121 1.15.2.2 mycroft /* sanity check. */ 122 1.15.2.2 mycroft if (pa->pa_bus != PPB_BUSINFO_PRIMARY(busdata)) 123 1.15.2.2 mycroft panic("ppbattach: bus in tag (%d) != bus in reg (%d)", 124 1.15.2.2 mycroft pa->pa_bus, PPB_BUSINFO_PRIMARY(busdata)); 125 1.15.2.2 mycroft #endif 126 1.15.2.2 mycroft 127 1.15.2.2 mycroft /* 128 1.15.2.2 mycroft * Attach the PCI bus than hangs off of it. 129 1.15.2.2 mycroft */ 130 1.15.2.2 mycroft pba.pba_busname = "pci"; 131 1.15.2.2 mycroft pba.pba_iot = pa->pa_iot; 132 1.15.2.2 mycroft pba.pba_memt = pa->pa_memt; 133 1.15.2.2 mycroft pba.pba_dmat = pa->pa_dmat; 134 1.15.2.2 mycroft pba.pba_pc = pc; 135 1.15.2.2 mycroft pba.pba_flags = pa->pa_flags; 136 1.15.2.2 mycroft pba.pba_bus = PPB_BUSINFO_SECONDARY(busdata); 137 1.15.2.2 mycroft pba.pba_intrswiz = pa->pa_intrswiz; 138 1.15.2.2 mycroft pba.pba_intrtag = pa->pa_intrtag; 139 1.15.2.2 mycroft 140 1.15.2.2 mycroft config_found(self, &pba, ppbprint); 141 1.15.2.2 mycroft } 142 1.15.2.2 mycroft 143 1.15.2.2 mycroft int 144 1.15.2.2 mycroft ppbprint(aux, pnp) 145 1.15.2.2 mycroft void *aux; 146 1.15.2.2 mycroft const char *pnp; 147 1.15.2.2 mycroft { 148 1.15.2.2 mycroft struct pcibus_attach_args *pba = aux; 149 1.15.2.2 mycroft 150 1.15.2.2 mycroft /* only PCIs can attach to PPBs; easy. */ 151 1.15.2.2 mycroft if (pnp) 152 1.15.2.2 mycroft printf("pci at %s", pnp); 153 1.15.2.2 mycroft printf(" bus %d", pba->pba_bus); 154 1.15.2.2 mycroft return (UNCONF); 155 1.15.2.2 mycroft } 156
Indexes created Wed Oct 15 16:09:53 GMT 2025