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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * rsrc_mgr.c -- Resource management routines and/or wrappers | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * The initial developer of the original code is David A. Hinds | |
9 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
10 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
11 | * | |
12 | * (C) 1999 David A. Hinds | |
13 | */ | |
14 | ||
1da177e4 LT |
15 | #include <linux/module.h> |
16 | #include <linux/kernel.h> | |
17 | ||
18 | #include <pcmcia/cs_types.h> | |
19 | #include <pcmcia/ss.h> | |
20 | #include <pcmcia/cs.h> | |
91284224 | 21 | #include <pcmcia/cistpl.h> |
1da177e4 LT |
22 | #include "cs_internal.h" |
23 | ||
1da177e4 LT |
24 | static int static_init(struct pcmcia_socket *s) |
25 | { | |
1da177e4 LT |
26 | /* the good thing about SS_CAP_STATIC_MAP sockets is |
27 | * that they don't need a resource database */ | |
28 | ||
1da177e4 | 29 | s->resource_setup_done = 1; |
1da177e4 LT |
30 | |
31 | return 0; | |
32 | } | |
33 | ||
34 | ||
35 | struct pccard_resource_ops pccard_static_ops = { | |
36 | .validate_mem = NULL, | |
37 | .adjust_io_region = NULL, | |
38 | .find_io = NULL, | |
39 | .find_mem = NULL, | |
c5023801 DB |
40 | .add_io = NULL, |
41 | .add_mem = NULL, | |
1da177e4 LT |
42 | .init = static_init, |
43 | .exit = NULL, | |
44 | }; | |
45 | EXPORT_SYMBOL(pccard_static_ops); | |
3b27e942 DB |
46 | |
47 | ||
48 | #ifdef CONFIG_PCCARD_IODYN | |
49 | ||
50 | static struct resource * | |
51 | make_resource(unsigned long b, unsigned long n, int flags, char *name) | |
52 | { | |
53 | struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL); | |
54 | ||
55 | if (res) { | |
56 | res->name = name; | |
57 | res->start = b; | |
58 | res->end = b + n - 1; | |
59 | res->flags = flags; | |
60 | } | |
61 | return res; | |
62 | } | |
63 | ||
64 | struct pcmcia_align_data { | |
65 | unsigned long mask; | |
66 | unsigned long offset; | |
67 | }; | |
68 | ||
3b7a17fc DB |
69 | static resource_size_t pcmcia_align(void *align_data, |
70 | const struct resource *res, | |
b26b2d49 | 71 | resource_size_t size, resource_size_t align) |
3b27e942 DB |
72 | { |
73 | struct pcmcia_align_data *data = align_data; | |
b26b2d49 | 74 | resource_size_t start; |
3b27e942 DB |
75 | |
76 | start = (res->start & ~data->mask) + data->offset; | |
77 | if (start < res->start) | |
78 | start += data->mask + 1; | |
3b27e942 DB |
79 | |
80 | #ifdef CONFIG_X86 | |
9fea84f4 | 81 | if (res->flags & IORESOURCE_IO) { |
6e83ee07 | 82 | if (start & 0x300) |
9fea84f4 | 83 | start = (start + 0x3ff) & ~0x3ff; |
9fea84f4 | 84 | } |
3b27e942 DB |
85 | #endif |
86 | ||
87 | #ifdef CONFIG_M68K | |
9fea84f4 | 88 | if (res->flags & IORESOURCE_IO) { |
3b27e942 | 89 | if ((res->start + size - 1) >= 1024) |
b26b2d49 | 90 | start = res->end; |
3b27e942 DB |
91 | } |
92 | #endif | |
b26b2d49 DB |
93 | |
94 | return start; | |
3b27e942 DB |
95 | } |
96 | ||
97 | ||
98 | static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start, | |
99 | unsigned long r_end, struct pcmcia_socket *s) | |
100 | { | |
101 | return adjust_resource(res, r_start, r_end - r_start + 1); | |
102 | } | |
103 | ||
104 | ||
105 | static struct resource *iodyn_find_io_region(unsigned long base, int num, | |
106 | unsigned long align, struct pcmcia_socket *s) | |
107 | { | |
108 | struct resource *res = make_resource(0, num, IORESOURCE_IO, | |
f2fecec5 | 109 | dev_name(&s->dev)); |
3b27e942 DB |
110 | struct pcmcia_align_data data; |
111 | unsigned long min = base; | |
112 | int ret; | |
113 | ||
114 | if (align == 0) | |
115 | align = 0x10000; | |
116 | ||
117 | data.mask = align - 1; | |
118 | data.offset = base & data.mask; | |
119 | ||
120 | #ifdef CONFIG_PCI | |
121 | if (s->cb_dev) { | |
122 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
123 | min, 0, pcmcia_align, &data); | |
124 | } else | |
125 | #endif | |
126 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
127 | 1, pcmcia_align, &data); | |
128 | ||
129 | if (ret != 0) { | |
130 | kfree(res); | |
131 | res = NULL; | |
132 | } | |
133 | return res; | |
134 | } | |
135 | ||
136 | struct pccard_resource_ops pccard_iodyn_ops = { | |
137 | .validate_mem = NULL, | |
138 | .adjust_io_region = iodyn_adjust_io_region, | |
139 | .find_io = iodyn_find_io_region, | |
140 | .find_mem = NULL, | |
c5023801 DB |
141 | .add_io = NULL, |
142 | .add_mem = NULL, | |
3b27e942 DB |
143 | .init = static_init, |
144 | .exit = NULL, | |
145 | }; | |
146 | EXPORT_SYMBOL(pccard_iodyn_ops); | |
147 | ||
148 | #endif /* CONFIG_PCCARD_IODYN */ |