1 /* $NetBSD: bus_private.h,v 1.10 2019/02/14 06:59:24 cherry Exp $ */
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 #ifdef XENPV
33 #define _BUS_PHYS_TO_BUS(pa) ((bus_addr_t)xpmap_ptom(pa))
34 #define _BUS_BUS_TO_PHYS(ba) ((paddr_t)xpmap_mtop(ba))
35 #define _BUS_VIRT_TO_BUS(pm, va) _bus_virt_to_bus((pm), (va))
36 #define _BUS_BUS_TO_VM_PAGE(ba) (PHYS_TO_VM_PAGE(xpmap_mtop(ba)))
37 #define _BUS_PMAP_ENTER(pmap, va, ba, prot, flags) \
38 pmap_enter(pmap, va, xpmap_mtop(ba), prot, flags)
39
40 static __inline bus_addr_t _bus_virt_to_bus(struct pmap *, vaddr_t);
41
42 static __inline bus_addr_t
_bus_virt_to_bus(struct pmap * pm,vaddr_t va)43 _bus_virt_to_bus(struct pmap *pm, vaddr_t va)
44 {
45 bus_addr_t ba;
46
47 if (!pmap_extract_ma(pm, va, &ba)) {
48 panic("_bus_virt_to_bus");
49 }
50
51 return ba;
52 }
53
54 /* we need our own bus_dmamem_alloc_range */
55 #define _BUS_DMAMEM_ALLOC_RANGE _xen_bus_dmamem_alloc_range
56 int _xen_bus_dmamem_alloc_range(bus_dma_tag_t, bus_size_t, bus_size_t,
57 bus_size_t, bus_dma_segment_t *, int, int *, int,
58 bus_addr_t, bus_addr_t);
59
60 /*
61 * The higher machine address of our allocated range isn't know and can change
62 * over time. Just assume it's the largest possible value.
63 */
64 #if defined(_LP64) || defined(PAE)
65 #define _BUS_AVAIL_END ((bus_addr_t)0xffffffffffffffff)
66 #else
67 #define _BUS_AVAIL_END ((bus_addr_t)0xffffffff)
68 #endif
69 #endif /* XENPV */
70 #include <x86/bus_private.h>
71
72