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

     /*-
      * SPDX-License-Identifier: BSD-3-Clause
      *
      * Copyright (c) 1999, 2000 Matthew R. Green
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      from: NetBSD: ebus.c,v 1.52 2008/05/29 14:51:26 mrg Exp
     */
    /*-
     * Copyright (c) 2001, 2003 Thomas Moestl <tmm@FreeBSD.org>
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    /*
     * Helper functions which can be used in both ISA and EBus code.
     */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    
    #include <dev/ofw/ofw_bus_subr.h>
    #include <dev/ofw/openfirm.h>
    
    #include <machine/bus.h>
    #include <machine/resource.h>
    
    #include <sparc64/pci/ofw_pci.h>
    #include <sparc64/isa/ofw_isa.h>
    
    #include "pcib_if.h"
    
    int
    ofw_isa_range_restype(struct isa_ranges *range)
    {
            int ps = ISA_RANGE_PS(range);
    
            switch (ps) {
            case OFW_PCI_CS_IO:
                    return (SYS_RES_IOPORT);
            case OFW_PCI_CS_MEM32:
                    return (SYS_RES_MEMORY);
            default:
                    panic("ofw_isa_range_restype: illegal space %x", ps);
            }
    
    }
    
    /* XXX: this only supports PCI as parent bus right now. */
    int
   ofw_isa_range_map(struct isa_ranges *range, int nrange, u_long *start,
       u_long *end, int *which)
   {
           struct isa_ranges *r;
           uint64_t offs, cstart, cend;
           int i;
   
           for (i = 0; i < nrange; i++) {
                   r = &range[i];
                   cstart = ISA_RANGE_CHILD(r);
                   cend = cstart + r->size - 1;
                   if (*start < cstart || *start > cend)
                           continue;
                   if (*end < cstart || *end > cend) {
                           panic("ofw_isa_map_iorange: iorange crosses PCI "
                               "ranges (%#lx not in %#lx - %#lx)", *end, cstart,
                               cend);
                   }
                   offs = ISA_RANGE_PHYS(r);
                   *start = *start + offs - cstart;
                   *end  = *end + offs - cstart;
                   if (which != NULL)
                           *which = i;
                   return (ofw_isa_range_restype(r));
           }
           panic("ofw_isa_map_iorange: could not map range %#lx - %#lx",
               *start, *end);
   }
   
   ofw_pci_intr_t
   ofw_isa_route_intr(device_t bridge, phandle_t node, struct ofw_bus_iinfo *ii,
       ofw_isa_intr_t intr)
   {
           struct isa_regs reg;
           device_t pbridge;
           ofw_isa_intr_t mintr;
   
           pbridge = device_get_parent(device_get_parent(bridge));
           /*
            * If we get a match from using the map, the resulting INO is
            * fully specified, so we may not continue to map.
            */
           if (!ofw_bus_lookup_imap(node, ii, &reg, sizeof(reg),
               &intr, sizeof(intr), &mintr, sizeof(mintr), NULL)) {
                   /* Try routing at the parent bridge. */
                   mintr = PCIB_ROUTE_INTERRUPT(pbridge, bridge, intr);
           }
           return (mintr);
   }

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