sys/arch/xen/include/bus_private.h

   1 /*      $NetBSD$        */
   2
   3 /*-
   4  * Copyright (c)2005 YAMAMOTO Takashi,
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <uvm/uvm_extern.h>
  30 #include "opt_xen.h"
  31
  32 #define _BUS_PHYS_TO_BUS(pa)    ((bus_addr_t)xpmap_ptom(pa))
  33 #define _BUS_BUS_TO_PHYS(ba)    ((paddr_t)xpmap_mtop(ba))
  34 #define _BUS_VIRT_TO_BUS(pm, va) _bus_virt_to_bus((pm), (va))
  35 #define _BUS_BUS_TO_VM_PAGE(ba) (PHYS_TO_VM_PAGE(xpmap_mtop(ba)))
  36 #define _BUS_PMAP_ENTER(pmap, va, ba, prot, flags) \
  37     pmap_enter(pmap, va, xpmap_mtop(ba), prot, flags)
  38
  39 static __inline bus_addr_t _bus_virt_to_bus(struct pmap *, vaddr_t);
  40
  41 static __inline bus_addr_t
  42 _bus_virt_to_bus(struct pmap *pm, vaddr_t va)
  43 {
  44         bus_addr_t ba;
  45
  46         if (!pmap_extract_ma(pm, va, &ba)) {
  47                 panic("_bus_virt_to_bus");
  48         }
  49
  50         return ba;
  51 }
  52
  53 /* we need our own bus_dmamem_alloc_range */
  54 #define _BUS_DMAMEM_ALLOC_RANGE _xen_bus_dmamem_alloc_range
  55 int _xen_bus_dmamem_alloc_range(bus_dma_tag_t, bus_size_t, bus_size_t,
  56             bus_size_t, bus_dma_segment_t *, int, int *, int,
  57             bus_addr_t, bus_addr_t);
  58
  59 /*
  60  * The higher machine address of our allocated range isn't know and can change
  61  * over time. Just assume it's the largest possible value.
  62  */
  63 #if defined(_LP64) || defined(PAE)
  64 #define _BUS_AVAIL_END ((bus_addr_t)0xffffffffffffffff)
  65 #else
  66 #define _BUS_AVAIL_END ((bus_addr_t)0xffffffff)
  67 #endif
  68
  69 #include <x86/bus_private.h>