/* $OpenBSD: rbus_machdep.c,v 1.28 2023/01/30 10:49:05 jsg Exp $ */ /* $NetBSD: rbus_machdep.c,v 1.2 1999/10/15 06:43:06 haya Exp $ */ /* * Copyright (c) 1999 * HAYAKAWA Koichi. All rights reserved. * * 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 AUTHOR ``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 AUTHOR 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 #ifndef RBUS_MEM_START /* Avoid the ISA hole and everything below it. */ #define RBUS_MEM_START 0x00100000 #endif #ifndef RBUS_IO_START /* Try to avoid onboard legacy devices; just a guess. */ #define RBUS_IO_START 0xa000 #endif struct rbustag rbus_null; rbus_tag_t rbus_pccbb_parent_mem(struct device *self, struct pci_attach_args *pa) { struct extent *ex = pa->pa_memex; bus_addr_t start; bus_size_t size; if (ex == NULL) return &rbus_null; start = RBUS_MEM_START; size = ex->ex_end - start; return (rbus_new_root_share(pa->pa_memt, ex, start, size)); } rbus_tag_t rbus_pccbb_parent_io(struct device *self, struct pci_attach_args *pa) { struct extent *ex = pa->pa_ioex; bus_addr_t start; bus_size_t size; if (ex == NULL) return &rbus_null; start = ex->ex_start; if (ex == pciio_ex) { /* * We're on the root bus, or behind a subtractive * decode PCI-PCI bridge. To avoid conflicts with * onboard legacy devices, we only make a subregion * available. */ start = max(start, RBUS_IO_START); } size = ex->ex_end - start; return (rbus_new_root_share(pa->pa_iot, ex, start, size)); } void pccbb_attach_hook(struct device *parent, struct device *self, struct pci_attach_args *pa) { }