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> | |
21 | #include "cs_internal.h" | |
22 | ||
23 | ||
de75914e | 24 | int pcmcia_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
25 | { |
26 | if (s->resource_ops->validate_mem) | |
de75914e DB |
27 | return s->resource_ops->validate_mem(s); |
28 | /* if there is no callback, we can assume that everything is OK */ | |
29 | return 0; | |
1da177e4 LT |
30 | } |
31 | EXPORT_SYMBOL(pcmcia_validate_mem); | |
32 | ||
e6ea0b9e | 33 | int pcmcia_adjust_io_region(struct resource *res, unsigned long r_start, |
1da177e4 LT |
34 | unsigned long r_end, struct pcmcia_socket *s) |
35 | { | |
36 | if (s->resource_ops->adjust_io_region) | |
37 | return s->resource_ops->adjust_io_region(res, r_start, r_end, s); | |
38 | return -ENOMEM; | |
39 | } | |
1a8d4663 | 40 | EXPORT_SYMBOL(pcmcia_adjust_io_region); |
1da177e4 | 41 | |
e6ea0b9e | 42 | struct resource *pcmcia_find_io_region(unsigned long base, int num, |
1da177e4 LT |
43 | unsigned long align, struct pcmcia_socket *s) |
44 | { | |
45 | if (s->resource_ops->find_io) | |
46 | return s->resource_ops->find_io(base, num, align, s); | |
47 | return NULL; | |
48 | } | |
1a8d4663 | 49 | EXPORT_SYMBOL(pcmcia_find_io_region); |
1da177e4 | 50 | |
e6ea0b9e | 51 | struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align, |
1da177e4 LT |
52 | int low, struct pcmcia_socket *s) |
53 | { | |
54 | if (s->resource_ops->find_mem) | |
55 | return s->resource_ops->find_mem(base, num, align, low, s); | |
56 | return NULL; | |
57 | } | |
1a8d4663 | 58 | EXPORT_SYMBOL(pcmcia_find_mem_region); |
1da177e4 LT |
59 | |
60 | void release_resource_db(struct pcmcia_socket *s) | |
61 | { | |
62 | if (s->resource_ops->exit) | |
63 | s->resource_ops->exit(s); | |
64 | } | |
65 | ||
66 | ||
67 | static int static_init(struct pcmcia_socket *s) | |
68 | { | |
69 | unsigned long flags; | |
70 | ||
71 | /* the good thing about SS_CAP_STATIC_MAP sockets is | |
72 | * that they don't need a resource database */ | |
73 | ||
74 | spin_lock_irqsave(&s->lock, flags); | |
75 | s->resource_setup_done = 1; | |
76 | spin_unlock_irqrestore(&s->lock, flags); | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
81 | ||
82 | struct pccard_resource_ops pccard_static_ops = { | |
83 | .validate_mem = NULL, | |
84 | .adjust_io_region = NULL, | |
85 | .find_io = NULL, | |
86 | .find_mem = NULL, | |
c5023801 DB |
87 | .add_io = NULL, |
88 | .add_mem = NULL, | |
1da177e4 LT |
89 | .init = static_init, |
90 | .exit = NULL, | |
91 | }; | |
92 | EXPORT_SYMBOL(pccard_static_ops); | |
3b27e942 DB |
93 | |
94 | ||
95 | #ifdef CONFIG_PCCARD_IODYN | |
96 | ||
97 | static struct resource * | |
98 | make_resource(unsigned long b, unsigned long n, int flags, char *name) | |
99 | { | |
100 | struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL); | |
101 | ||
102 | if (res) { | |
103 | res->name = name; | |
104 | res->start = b; | |
105 | res->end = b + n - 1; | |
106 | res->flags = flags; | |
107 | } | |
108 | return res; | |
109 | } | |
110 | ||
111 | struct pcmcia_align_data { | |
112 | unsigned long mask; | |
113 | unsigned long offset; | |
114 | }; | |
115 | ||
116 | static void pcmcia_align(void *align_data, struct resource *res, | |
117 | unsigned long size, unsigned long align) | |
118 | { | |
119 | struct pcmcia_align_data *data = align_data; | |
120 | unsigned long start; | |
121 | ||
122 | start = (res->start & ~data->mask) + data->offset; | |
123 | if (start < res->start) | |
124 | start += data->mask + 1; | |
125 | res->start = start; | |
126 | ||
127 | #ifdef CONFIG_X86 | |
128 | if (res->flags & IORESOURCE_IO) { | |
129 | if (start & 0x300) { | |
130 | start = (start + 0x3ff) & ~0x3ff; | |
131 | res->start = start; | |
132 | } | |
133 | } | |
134 | #endif | |
135 | ||
136 | #ifdef CONFIG_M68K | |
137 | if (res->flags & IORESOURCE_IO) { | |
138 | if ((res->start + size - 1) >= 1024) | |
139 | res->start = res->end; | |
140 | } | |
141 | #endif | |
142 | } | |
143 | ||
144 | ||
145 | static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start, | |
146 | unsigned long r_end, struct pcmcia_socket *s) | |
147 | { | |
148 | return adjust_resource(res, r_start, r_end - r_start + 1); | |
149 | } | |
150 | ||
151 | ||
152 | static struct resource *iodyn_find_io_region(unsigned long base, int num, | |
153 | unsigned long align, struct pcmcia_socket *s) | |
154 | { | |
155 | struct resource *res = make_resource(0, num, IORESOURCE_IO, | |
f2fecec5 | 156 | dev_name(&s->dev)); |
3b27e942 DB |
157 | struct pcmcia_align_data data; |
158 | unsigned long min = base; | |
159 | int ret; | |
160 | ||
161 | if (align == 0) | |
162 | align = 0x10000; | |
163 | ||
164 | data.mask = align - 1; | |
165 | data.offset = base & data.mask; | |
166 | ||
167 | #ifdef CONFIG_PCI | |
168 | if (s->cb_dev) { | |
169 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
170 | min, 0, pcmcia_align, &data); | |
171 | } else | |
172 | #endif | |
173 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
174 | 1, pcmcia_align, &data); | |
175 | ||
176 | if (ret != 0) { | |
177 | kfree(res); | |
178 | res = NULL; | |
179 | } | |
180 | return res; | |
181 | } | |
182 | ||
183 | struct pccard_resource_ops pccard_iodyn_ops = { | |
184 | .validate_mem = NULL, | |
185 | .adjust_io_region = iodyn_adjust_io_region, | |
186 | .find_io = iodyn_find_io_region, | |
187 | .find_mem = NULL, | |
c5023801 DB |
188 | .add_io = NULL, |
189 | .add_mem = NULL, | |
3b27e942 DB |
190 | .init = static_init, |
191 | .exit = NULL, | |
192 | }; | |
193 | EXPORT_SYMBOL(pccard_iodyn_ops); | |
194 | ||
195 | #endif /* CONFIG_PCCARD_IODYN */ |