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: releng/5.2/sys/sparc64/isa/ofw_isa.c 119338 2003-08-23 00:11:16Z imp $
   32  */
   33 
   34 /*
   35  * Helper functions which can be used in both ISA and EBus code.
   36  */
   37 
   38 #include "opt_ofw_pci.h"
   39 
   40 #include <sys/param.h>
   41 #include <sys/systm.h>
   42 #include <sys/bus.h>
   43 
   44 #include <dev/ofw/openfirm.h>
   45 #include <dev/ofw/ofw_pci.h>
   46 
   47 #include <machine/bus.h>
   48 #include <machine/resource.h>
   49 #include <machine/ofw_bus.h>
   50 
   51 #include <sparc64/pci/ofw_pci.h>
   52 #include <sparc64/isa/ofw_isa.h>
   53 
   54 #include "pcib_if.h"
   55 
   56 /* XXX: this only supports PCI as parent bus right now. */
   57 int
   58 ofw_isa_map_iorange(struct isa_ranges *range, int nrange, u_long *start,
   59     u_long *end)
   60 {
   61         u_int64_t offs, cstart, cend;
   62         int i;
   63 
   64         for (i = 0; i < nrange; i++) {
   65                 cstart = ((u_int64_t)range[i].child_hi << 32) |
   66                     range[i].child_lo;
   67                 cend = cstart + range[i].size;
   68                 if (*start < cstart || *start > cend)
   69                         continue;
   70                 if (*end < cstart || *end > cend) {
   71                         panic("ofw_isa_map_iorange: iorange crosses pci "
   72                             "ranges (%#lx not in %#lx - %#lx)", *end, cstart,
   73                             cend);
   74                 }
   75                 offs = (((u_int64_t)range[i].phys_mid << 32) |
   76                     range[i].phys_lo);
   77                 *start = *start + offs - cstart;
   78                 *end  = *end + offs - cstart;
   79                 /* Isolate address space and find the right tag */
   80                 switch (ISA_RANGE_PS(&range[i])) {
   81                 case PCI_CS_IO:
   82                         return (SYS_RES_IOPORT);
   83                 case PCI_CS_MEM32:
   84                         return (SYS_RES_MEMORY);
   85                 default:
   86                         panic("ofw_isa_map_iorange: illegal space %x",
   87                             ISA_RANGE_PS(&range[i]));
   88                         break;
   89                 }
   90         }
   91         panic("ofw_isa_map_iorange: could not map range %#lx - %#lx",
   92             *start, *end);
   93 }
   94 
   95 #ifdef OFW_NEWPCI
   96 ofw_pci_intr_t
   97 ofw_isa_route_intr(device_t bridge, phandle_t node, struct ofw_bus_iinfo *ii,
   98     ofw_isa_intr_t intr)
   99 {
  100         struct isa_regs reg;
  101         u_int8_t maskbuf[sizeof(reg) + sizeof(intr)];
  102         device_t pbridge;
  103         ofw_isa_intr_t mintr;
  104 
  105         pbridge = device_get_parent(device_get_parent(bridge));
  106         /*
  107          * If we get a match from using the map, the resulting INO is
  108          * fully specified, so we may not continue to map.
  109          */
  110         if (!ofw_bus_lookup_imap(node, ii, &reg, sizeof(reg),
  111             &intr, sizeof(intr), &mintr, sizeof(mintr), maskbuf)) {
  112                 /* Try routing at the parent bridge. */
  113                 mintr = PCIB_ROUTE_INTERRUPT(pbridge, bridge, intr);
  114         }
  115         return (mintr);
  116 }
  117 #endif /* OFW_NEWPCI */

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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