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 | ||
24 | ||
de75914e | 25 | int pcmcia_validate_mem(struct pcmcia_socket *s) |
1da177e4 LT |
26 | { |
27 | if (s->resource_ops->validate_mem) | |
de75914e DB |
28 | return s->resource_ops->validate_mem(s); |
29 | /* if there is no callback, we can assume that everything is OK */ | |
30 | return 0; | |
1da177e4 LT |
31 | } |
32 | EXPORT_SYMBOL(pcmcia_validate_mem); | |
33 | ||
e6ea0b9e | 34 | int pcmcia_adjust_io_region(struct resource *res, unsigned long r_start, |
1da177e4 LT |
35 | unsigned long r_end, struct pcmcia_socket *s) |
36 | { | |
37 | if (s->resource_ops->adjust_io_region) | |
38 | return s->resource_ops->adjust_io_region(res, r_start, r_end, s); | |
39 | return -ENOMEM; | |
40 | } | |
1a8d4663 | 41 | EXPORT_SYMBOL(pcmcia_adjust_io_region); |
1da177e4 | 42 | |
e6ea0b9e | 43 | struct resource *pcmcia_find_io_region(unsigned long base, int num, |
1da177e4 LT |
44 | unsigned long align, struct pcmcia_socket *s) |
45 | { | |
46 | if (s->resource_ops->find_io) | |
47 | return s->resource_ops->find_io(base, num, align, s); | |
48 | return NULL; | |
49 | } | |
1a8d4663 | 50 | EXPORT_SYMBOL(pcmcia_find_io_region); |
1da177e4 | 51 | |
e6ea0b9e | 52 | struct resource *pcmcia_find_mem_region(u_long base, u_long num, u_long align, |
1da177e4 LT |
53 | int low, struct pcmcia_socket *s) |
54 | { | |
55 | if (s->resource_ops->find_mem) | |
56 | return s->resource_ops->find_mem(base, num, align, low, s); | |
57 | return NULL; | |
58 | } | |
1a8d4663 | 59 | EXPORT_SYMBOL(pcmcia_find_mem_region); |
1da177e4 LT |
60 | |
61 | void release_resource_db(struct pcmcia_socket *s) | |
62 | { | |
63 | if (s->resource_ops->exit) | |
64 | s->resource_ops->exit(s); | |
65 | } | |
66 | ||
67 | ||
68 | static int static_init(struct pcmcia_socket *s) | |
69 | { | |
70 | unsigned long flags; | |
71 | ||
72 | /* the good thing about SS_CAP_STATIC_MAP sockets is | |
73 | * that they don't need a resource database */ | |
74 | ||
75 | spin_lock_irqsave(&s->lock, flags); | |
76 | s->resource_setup_done = 1; | |
77 | spin_unlock_irqrestore(&s->lock, flags); | |
78 | ||
79 | return 0; | |
80 | } | |
81 | ||
82 | ||
83 | struct pccard_resource_ops pccard_static_ops = { | |
84 | .validate_mem = NULL, | |
85 | .adjust_io_region = NULL, | |
86 | .find_io = NULL, | |
87 | .find_mem = NULL, | |
c5023801 DB |
88 | .add_io = NULL, |
89 | .add_mem = NULL, | |
1da177e4 LT |
90 | .init = static_init, |
91 | .exit = NULL, | |
92 | }; | |
93 | EXPORT_SYMBOL(pccard_static_ops); | |
3b27e942 DB |
94 | |
95 | ||
96 | #ifdef CONFIG_PCCARD_IODYN | |
97 | ||
98 | static struct resource * | |
99 | make_resource(unsigned long b, unsigned long n, int flags, char *name) | |
100 | { | |
101 | struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL); | |
102 | ||
103 | if (res) { | |
104 | res->name = name; | |
105 | res->start = b; | |
106 | res->end = b + n - 1; | |
107 | res->flags = flags; | |
108 | } | |
109 | return res; | |
110 | } | |
111 | ||
112 | struct pcmcia_align_data { | |
113 | unsigned long mask; | |
114 | unsigned long offset; | |
115 | }; | |
116 | ||
117 | static void pcmcia_align(void *align_data, struct resource *res, | |
118 | unsigned long size, unsigned long align) | |
119 | { | |
120 | struct pcmcia_align_data *data = align_data; | |
121 | unsigned long start; | |
122 | ||
123 | start = (res->start & ~data->mask) + data->offset; | |
124 | if (start < res->start) | |
125 | start += data->mask + 1; | |
126 | res->start = start; | |
127 | ||
128 | #ifdef CONFIG_X86 | |
9fea84f4 DB |
129 | if (res->flags & IORESOURCE_IO) { |
130 | if (start & 0x300) { | |
131 | start = (start + 0x3ff) & ~0x3ff; | |
132 | res->start = start; | |
133 | } | |
134 | } | |
3b27e942 DB |
135 | #endif |
136 | ||
137 | #ifdef CONFIG_M68K | |
9fea84f4 | 138 | if (res->flags & IORESOURCE_IO) { |
3b27e942 DB |
139 | if ((res->start + size - 1) >= 1024) |
140 | res->start = res->end; | |
141 | } | |
142 | #endif | |
143 | } | |
144 | ||
145 | ||
146 | static int iodyn_adjust_io_region(struct resource *res, unsigned long r_start, | |
147 | unsigned long r_end, struct pcmcia_socket *s) | |
148 | { | |
149 | return adjust_resource(res, r_start, r_end - r_start + 1); | |
150 | } | |
151 | ||
152 | ||
153 | static struct resource *iodyn_find_io_region(unsigned long base, int num, | |
154 | unsigned long align, struct pcmcia_socket *s) | |
155 | { | |
156 | struct resource *res = make_resource(0, num, IORESOURCE_IO, | |
f2fecec5 | 157 | dev_name(&s->dev)); |
3b27e942 DB |
158 | struct pcmcia_align_data data; |
159 | unsigned long min = base; | |
160 | int ret; | |
161 | ||
162 | if (align == 0) | |
163 | align = 0x10000; | |
164 | ||
165 | data.mask = align - 1; | |
166 | data.offset = base & data.mask; | |
167 | ||
168 | #ifdef CONFIG_PCI | |
169 | if (s->cb_dev) { | |
170 | ret = pci_bus_alloc_resource(s->cb_dev->bus, res, num, 1, | |
171 | min, 0, pcmcia_align, &data); | |
172 | } else | |
173 | #endif | |
174 | ret = allocate_resource(&ioport_resource, res, num, min, ~0UL, | |
175 | 1, pcmcia_align, &data); | |
176 | ||
177 | if (ret != 0) { | |
178 | kfree(res); | |
179 | res = NULL; | |
180 | } | |
181 | return res; | |
182 | } | |
183 | ||
184 | struct pccard_resource_ops pccard_iodyn_ops = { | |
185 | .validate_mem = NULL, | |
186 | .adjust_io_region = iodyn_adjust_io_region, | |
187 | .find_io = iodyn_find_io_region, | |
188 | .find_mem = NULL, | |
c5023801 DB |
189 | .add_io = NULL, |
190 | .add_mem = NULL, | |
3b27e942 DB |
191 | .init = static_init, |
192 | .exit = NULL, | |
193 | }; | |
194 | EXPORT_SYMBOL(pccard_iodyn_ops); | |
195 | ||
196 | #endif /* CONFIG_PCCARD_IODYN */ |