/* $OpenBSD: pcib.c,v 1.7 2022/02/21 11:03:39 mpi Exp $ */ /* $NetBSD: pcib.c,v 1.6 1997/06/06 23:29:16 thorpej Exp $ */ /*- * Copyright (c) 1996 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include "isa.h" int pcibmatch(struct device *, void *, void *); void pcibattach(struct device *, struct device *, void *); void pcib_callback(struct device *); int pcib_print(void *, const char *); const struct cfattach pcib_ca = { sizeof(struct device), pcibmatch, pcibattach }; struct cfdriver pcib_cd = { NULL, "pcib", DV_DULL }; int pcibmatch(struct device *parent, void *match, void *aux) { struct pci_attach_args *pa = aux; switch (PCI_VENDOR(pa->pa_id)) { case PCI_VENDOR_INTEL: switch (PCI_PRODUCT(pa->pa_id)) { case PCI_PRODUCT_INTEL_SIO: case PCI_PRODUCT_INTEL_82371MX: case PCI_PRODUCT_INTEL_82371AB_ISA: case PCI_PRODUCT_INTEL_82440MX_ISA: /* The above bridges mis-identify themselves */ return (1); } break; case PCI_VENDOR_SIS: switch (PCI_PRODUCT(pa->pa_id)) { case PCI_PRODUCT_SIS_85C503: /* mis-identifies itself as a miscellaneous prehistoric */ return (1); } break; case PCI_VENDOR_VIATECH: switch (PCI_PRODUCT(pa->pa_id)) { case PCI_PRODUCT_VIATECH_VT82C686A_SMB: /* mis-identifies itself as a ISA bridge */ return (0); } break; } if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE && PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) return (1); return (0); } void pcibattach(struct device *parent, struct device *self, void *aux) { /* * Cannot attach isa bus now; must postpone for various reasons */ printf("\n"); config_defer(self, pcib_callback); } void pcib_callback(struct device *self) { struct isabus_attach_args iba; /* * Attach the ISA bus behind this bridge. */ memset(&iba, 0, sizeof(iba)); iba.iba_busname = "isa"; iba.iba_iot = X86_BUS_SPACE_IO; iba.iba_memt = X86_BUS_SPACE_MEM; #if NISADMA > 0 iba.iba_dmat = &isa_bus_dma_tag; #endif config_found(self, &iba, pcib_print); } int pcib_print(void *aux, const char *pnp) { /* Only ISAs can attach to pcib's; easy. */ if (pnp) printf("isa at %s", pnp); return (UNCONF); }