ofw_isa.c

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    1 /*-
    2  * Copyright (c) 1999, 2000 Matthew R. Green
    3  * Copyright (c) 2001, 2003 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: src/sys/sparc64/isa/ofw_isa.c,v 1.8.2.1 2005/01/31 23:26:54 imp Exp $
   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 <dev/ofw/openfirm.h>
   43 
   44 #include <machine/bus.h>
   45 #include <machine/resource.h>
   46 #include <machine/ofw_bus.h>
   47 
   48 #include <sparc64/pci/ofw_pci.h>
   49 #include <sparc64/isa/ofw_isa.h>
   50 
   51 #include "pcib_if.h"
   52 
   53 int
   54 ofw_isa_range_restype(struct isa_ranges *range)
   55 {
   56         int ps = ISA_RANGE_PS(range);
   57 
   58         switch (ps) {
   59         case PCI_CS_IO:
   60                 return (SYS_RES_IOPORT);
   61         case PCI_CS_MEM32:
   62                 return (SYS_RES_MEMORY);
   63         default:
   64                 panic("ofw_isa_range_restype: illegal space %x", ps);
   65         }
   66 
   67 }
   68 
   69 /* XXX: this only supports PCI as parent bus right now. */
   70 int
   71 ofw_isa_range_map(struct isa_ranges *range, int nrange, u_long *start,
   72     u_long *end, int *which)
   73 {
   74         struct isa_ranges *r;
   75         u_int64_t offs, cstart, cend;
   76         int i;
   77 
   78         for (i = 0; i < nrange; i++) {
   79                 r = &range[i];
   80                 cstart = ISA_RANGE_CHILD(r);
   81                 cend = cstart + r->size;
   82                 if (*start < cstart || *start > cend)
   83                         continue;
   84                 if (*end < cstart || *end > cend) {
   85                         panic("ofw_isa_map_iorange: iorange crosses pci "
   86                             "ranges (%#lx not in %#lx - %#lx)", *end, cstart,
   87                             cend);
   88                 }
   89                 offs = ISA_RANGE_PHYS(r);
   90                 *start = *start + offs - cstart;
   91                 *end  = *end + offs - cstart;
   92                 if (which != NULL)
   93                         *which = i;
   94                 return (ofw_isa_range_restype(r));
   95         }
   96         panic("ofw_isa_map_iorange: could not map range %#lx - %#lx",
   97             *start, *end);
   98 }
   99 
  100 ofw_pci_intr_t
  101 ofw_isa_route_intr(device_t bridge, phandle_t node, struct ofw_bus_iinfo *ii,
  102     ofw_isa_intr_t intr)
  103 {
  104         struct isa_regs reg;
  105         u_int8_t maskbuf[sizeof(reg) + sizeof(intr)];
  106         device_t pbridge;
  107         ofw_isa_intr_t mintr;
  108 
  109         pbridge = device_get_parent(device_get_parent(bridge));
  110         /*
  111          * If we get a match from using the map, the resulting INO is
  112          * fully specified, so we may not continue to map.
  113          */
  114         if (!ofw_bus_lookup_imap(node, ii, &reg, sizeof(reg),
  115             &intr, sizeof(intr), &mintr, sizeof(mintr), maskbuf)) {
  116                 /* Try routing at the parent bridge. */
  117                 mintr = PCIB_ROUTE_INTERRUPT(pbridge, bridge, intr);
  118         }
  119         return (mintr);
  120 }

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

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