1 /*-
2 * Copyright (c) 2015 Ian Lepore <ian@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/11.1/sys/mips/mips/ofw_machdep.c 297682 2016-04-07 18:19:09Z ian $");
29
30 #include <sys/param.h>
31 #include <sys/bus.h>
32
33 #include <machine/bus.h>
34 #include <machine/fdt.h>
35
36 #include <dev/ofw/openfirm.h>
37 #include <dev/ofw/ofw_subr.h>
38
39 int
40 OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *tag,
41 bus_space_handle_t *handle, bus_size_t *sz)
42 {
43 bus_addr_t addr;
44 bus_size_t size;
45 pcell_t pci_hi;
46 int flags, res;
47
48 res = ofw_reg_to_paddr(dev, regno, &addr, &size, &pci_hi);
49 if (res < 0)
50 return (res);
51
52 /*
53 * Nothing special to do for PCI busses right now.
54 * This may need to be handled per-platform when it does come up.
55 */
56 #ifdef notyet
57 if (pci_hi == OFW_PADDR_NOT_PCI) {
58 *tag = fdtbus_bs_tag;
59 flags = 0;
60 } else {
61 *tag = fdtbus_bs_tag;
62 flags = (pci_hi & OFW_PCI_PHYS_HI_PREFETCHABLE) ?
63 BUS_SPACE_MAP_PREFETCHABLE: 0;
64 }
65 #else
66 *tag = fdtbus_bs_tag;
67 flags = 0;
68 #endif
69
70 if (sz != NULL)
71 *sz = size;
72
73 return (bus_space_map(*tag, addr, size, flags, handle));
74 }
Cache object: af10378af35890a521c779beec962828
|