1 /* $NetBSD: loongson_bus_io.c,v 1.2 2012/03/02 13:20:57 nonaka Exp $ */
2
3 /*-
4 * Copyright (c) 2001 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Platform-specific PCI bus I/O support for loongson-based systems
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: loongson_bus_io.c,v 1.2 2012/03/02 13:20:57 nonaka Exp $");
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/malloc.h>
42 #include <sys/syslog.h>
43 #include <sys/device.h>
44
45 #include <uvm/uvm_extern.h>
46
47 #include <machine/locore.h>
48
49 #include <mips/bonito/bonitoreg.h>
50
51 #include <sys/bus.h>
52
53 #include <evbmips/loongson/loongson_bus_defs.h>
54 #include <evbmips/loongson/autoconf.h>
55
56 #define CHIP bonito
57 #define CHIP_IO /* defined */
58
59 #define CHIP_EX_MALLOC_SAFE(v) (ex_mallocsafe)
60 #define CHIP_EXTENT(v) (loongson_io_ex)
61
62 /* IO region 1 */
63 #define CHIP_W1_BUS_START(v) 0x00000000UL
64 #define CHIP_W1_BUS_END(v) 0x000fffffUL
65 #define CHIP_W1_SYS_START(v) ((u_long)BONITO_PCIIO_BASE)
66 #define CHIP_W1_SYS_END(v) ((u_long)BONITO_PCIIO_BASE + 0x000fffffUL)
67
68 #include <mips/mips/bus_space_alignstride_chipdep.c>
69
70 int
bonito_bus_io_legacy_map(void * v,bus_addr_t addr,bus_size_t size,int flags,bus_space_handle_t * hp,int acct)71 bonito_bus_io_legacy_map(void *v, bus_addr_t addr, bus_size_t size, int flags,
72 bus_space_handle_t *hp, int acct)
73 {
74 const struct legacy_io_range *r;
75 bus_addr_t rend;
76
77 if (addr < BONITO_PCIIO_LEGACY) {
78 r = sys_platform->legacy_io_ranges;
79 if (r == NULL)
80 return (ENXIO);
81
82 rend = addr + size - 1;
83 for (; r->start != 0; r++)
84 if (addr >= r->start && rend <= r->end)
85 break;
86 if (r->end == 0)
87 return (ENXIO);
88 }
89 return __BS(map)(v, addr, size, flags, hp, acct);
90 }
91