ofw_isa.c

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    1 /*
    2  * Copyright (c) 1999, 2000 Matthew R. Green
    3  * Copyright (c) 2001 Thomas Moestl <tmm@FreeBSD.org>
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   22  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   24  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   25  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      from: NetBSD: ebus.c,v 1.26 2001/09/10 16:27:53 eeh Exp
   30  *
   31  * $FreeBSD: releng/5.1/sys/sparc64/isa/ofw_isa.c 93067 2002-03-24 02:11:06Z tmm $
   32  */
   33 
   34 /*
   35  * Helper functions which can be used in both ISA and EBus code.
   36  */
   37 
   38 #include <sys/param.h>
   39 #include <sys/systm.h>
   40 #include <sys/bus.h>
   41 
   42 #include <ofw/openfirm.h>
   43 #include <ofw/ofw_pci.h>
   44 
   45 #include <machine/resource.h>
   46 #include <machine/ofw_bus.h>
   47 
   48 #include <sparc64/isa/ofw_isa.h>
   49 #include <sparc64/pci/ofw_pci.h>
   50 
   51 /* XXX: this only supports PCI as parent bus right now. */
   52 int
   53 ofw_isa_map_iorange(struct isa_ranges *range, int nrange, u_long *start,
   54     u_long *end)
   55 {
   56         u_int64_t offs, cstart, cend;
   57         int i;
   58 
   59         for (i = 0; i < nrange; i++) {
   60                 cstart = ((u_int64_t)range[i].child_hi << 32) |
   61                     range[i].child_lo;
   62                 cend = cstart + range[i].size;
   63                 if (*start < cstart || *start > cend)
   64                         continue;
   65                 if (*end < cstart || *end > cend) {
   66                         panic("ofw_isa_map_iorange: iorange crosses pci "
   67                             "ranges (%#lx not in %#lx - %#lx)", *end, cstart,
   68                             cend);
   69                 }
   70                 offs = (((u_int64_t)range[i].phys_mid << 32) |
   71                     range[i].phys_lo);
   72                 *start = *start + offs - cstart;
   73                 *end  = *end + offs - cstart;
   74                 /* Isolate address space and find the right tag */
   75                 switch (ISA_RANGE_PS(&range[i])) {
   76                 case PCI_CS_IO:
   77                         return (SYS_RES_IOPORT);
   78                 case PCI_CS_MEM32:
   79                         return (SYS_RES_MEMORY);
   80                 default:
   81                         panic("ofw_isa_map_iorange: illegal space %x",
   82                             ISA_RANGE_PS(&range[i]));
   83                         break;
   84                 }
   85         }
   86         panic("ofw_isa_map_iorange: could not map range %#lx - %#lx",
   87             *start, *end);
   88 }

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FreeBSD/Linux Kernel Cross Reference sys/sparc64/isa/ofw_isa.c

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sys/sparc64/isa/ofw_isa.c