2001-11-09 20:21:21 +00:00
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/*
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* Copyright (c) 1999, 2000 Matthew R. Green
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* Copyright (c) 2001 Thomas Moestl <tmm@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: NetBSD: ebus.c,v 1.26 2001/09/10 16:27:53 eeh Exp
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*
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* $FreeBSD$
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*/
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/*
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* Helper functions which can be used in both ISA and EBus code.
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*/
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#include <sys/param.h>
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2002-03-09 22:00:30 +00:00
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#include <sys/systm.h>
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2001-11-09 20:21:21 +00:00
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#include <sys/bus.h>
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#include <ofw/openfirm.h>
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#include <ofw/ofw_pci.h>
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#include <machine/resource.h>
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#include <machine/ofw_bus.h>
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#include <sparc64/isa/ofw_isa.h>
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#include <sparc64/pci/ofw_pci.h>
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/* XXX: this only supports PCI as parent bus right now. */
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int
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ofw_isa_map_iorange(struct isa_ranges *range, int nrange, u_long *start,
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u_long *end)
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{
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u_int64_t offs, cstart, cend;
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int i;
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for (i = 0; i < nrange; i++) {
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cstart = ((u_int64_t)range[i].child_hi << 32) |
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range[i].child_lo;
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cend = cstart + range[i].size;
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if (*start < cstart || *start > cend)
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continue;
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if (*end < cstart || *end > cend) {
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panic("ofw_isa_map_iorange: iorange crosses pci "
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"ranges (%#lx not in %#lx - %#lx)", *end, cstart,
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cend);
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}
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offs = (((u_int64_t)range[i].phys_mid << 32) |
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range[i].phys_lo);
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*start = *start + offs - cstart;
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*end = *end + offs - cstart;
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/* Isolate address space and find the right tag */
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switch (ISA_RANGE_PS(&range[i])) {
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case PCI_CS_IO:
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return (SYS_RES_IOPORT);
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case PCI_CS_MEM32:
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return (SYS_RES_MEMORY);
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default:
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panic("ofw_isa_map_iorange: illegal space %x",
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ISA_RANGE_PS(&range[i]));
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break;
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}
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}
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panic("ofw_isa_map_iorange: could not map range %#lx - %#lx",
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*start, *end);
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}
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