521e80e700
the bus-dependent code and to be able to support more systems. The core of the new code is mostly obtained from NetBSD. Kluge the interrupt routing methods of the psycho and apb drivers so that an intline of 0 can be handled for now; real routing is still not possible (all intline registers are preinitialized instead); this will require a sparc64-specific adaption of the driver for generic PCI-PCI bridges with a custom routing method to work right.
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/*
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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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#include <sys/systm.h>
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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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