2 * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 #include <linux/rculist.h>
14 #include <linux/export.h>
15 #include <linux/ioport.h>
16 #include <linux/module.h>
17 #include <linux/types.h>
19 #include "nfit_test.h"
21 static LIST_HEAD(iomap_head);
23 static struct iomap_ops {
24 nfit_test_lookup_fn nfit_test_lookup;
25 struct list_head list;
27 .list = LIST_HEAD_INIT(iomap_ops.list),
30 void nfit_test_setup(nfit_test_lookup_fn lookup)
32 iomap_ops.nfit_test_lookup = lookup;
33 list_add_rcu(&iomap_ops.list, &iomap_head);
35 EXPORT_SYMBOL(nfit_test_setup);
37 void nfit_test_teardown(void)
39 list_del_rcu(&iomap_ops.list);
42 EXPORT_SYMBOL(nfit_test_teardown);
44 static struct nfit_test_resource *get_nfit_res(resource_size_t resource)
46 struct iomap_ops *ops;
48 ops = list_first_or_null_rcu(&iomap_head, typeof(*ops), list);
50 return ops->nfit_test_lookup(resource);
54 void __iomem *__nfit_test_ioremap(resource_size_t offset, unsigned long size,
55 void __iomem *(*fallback_fn)(resource_size_t, unsigned long))
57 struct nfit_test_resource *nfit_res;
60 nfit_res = get_nfit_res(offset);
63 return (void __iomem *) nfit_res->buf + offset
64 - nfit_res->res->start;
65 return fallback_fn(offset, size);
68 void __iomem *__wrap_devm_ioremap_nocache(struct device *dev,
69 resource_size_t offset, unsigned long size)
71 struct nfit_test_resource *nfit_res;
74 nfit_res = get_nfit_res(offset);
77 return (void __iomem *) nfit_res->buf + offset
78 - nfit_res->res->start;
79 return devm_ioremap_nocache(dev, offset, size);
81 EXPORT_SYMBOL(__wrap_devm_ioremap_nocache);
83 void *__wrap_devm_memremap(struct device *dev, resource_size_t offset,
84 size_t size, unsigned long flags)
86 struct nfit_test_resource *nfit_res;
89 nfit_res = get_nfit_res(offset);
92 return nfit_res->buf + offset - nfit_res->res->start;
93 return devm_memremap(dev, offset, size, flags);
95 EXPORT_SYMBOL(__wrap_devm_memremap);
97 void *__wrap_memremap(resource_size_t offset, size_t size,
100 struct nfit_test_resource *nfit_res;
103 nfit_res = get_nfit_res(offset);
106 return nfit_res->buf + offset - nfit_res->res->start;
107 return memremap(offset, size, flags);
109 EXPORT_SYMBOL(__wrap_memremap);
111 void __wrap_devm_memunmap(struct device *dev, void *addr)
113 struct nfit_test_resource *nfit_res;
116 nfit_res = get_nfit_res((unsigned long) addr);
120 return devm_memunmap(dev, addr);
122 EXPORT_SYMBOL(__wrap_devm_memunmap);
124 void __iomem *__wrap_ioremap_nocache(resource_size_t offset, unsigned long size)
126 return __nfit_test_ioremap(offset, size, ioremap_nocache);
128 EXPORT_SYMBOL(__wrap_ioremap_nocache);
130 void __iomem *__wrap_ioremap_wc(resource_size_t offset, unsigned long size)
132 return __nfit_test_ioremap(offset, size, ioremap_wc);
134 EXPORT_SYMBOL(__wrap_ioremap_wc);
136 void __wrap_iounmap(volatile void __iomem *addr)
138 struct nfit_test_resource *nfit_res;
141 nfit_res = get_nfit_res((unsigned long) addr);
145 return iounmap(addr);
147 EXPORT_SYMBOL(__wrap_iounmap);
149 void __wrap_memunmap(void *addr)
151 struct nfit_test_resource *nfit_res;
154 nfit_res = get_nfit_res((unsigned long) addr);
158 return memunmap(addr);
160 EXPORT_SYMBOL(__wrap_memunmap);
162 static struct resource *nfit_test_request_region(struct device *dev,
163 struct resource *parent, resource_size_t start,
164 resource_size_t n, const char *name, int flags)
166 struct nfit_test_resource *nfit_res;
168 if (parent == &iomem_resource) {
170 nfit_res = get_nfit_res(start);
173 struct resource *res = nfit_res->res + 1;
175 if (start + n > nfit_res->res->start
176 + resource_size(nfit_res->res)) {
177 pr_debug("%s: start: %llx n: %llx overflow: %pr\n",
184 res->end = start + n - 1;
186 res->flags = resource_type(parent);
187 res->flags |= IORESOURCE_BUSY | flags;
188 pr_debug("%s: %pr\n", __func__, res);
193 return __devm_request_region(dev, parent, start, n, name);
194 return __request_region(parent, start, n, name, flags);
197 struct resource *__wrap___request_region(struct resource *parent,
198 resource_size_t start, resource_size_t n, const char *name,
201 return nfit_test_request_region(NULL, parent, start, n, name, flags);
203 EXPORT_SYMBOL(__wrap___request_region);
205 struct resource *__wrap___devm_request_region(struct device *dev,
206 struct resource *parent, resource_size_t start,
207 resource_size_t n, const char *name)
211 return nfit_test_request_region(dev, parent, start, n, name, 0);
213 EXPORT_SYMBOL(__wrap___devm_request_region);
215 void __wrap___release_region(struct resource *parent, resource_size_t start,
218 struct nfit_test_resource *nfit_res;
220 if (parent == &iomem_resource) {
222 nfit_res = get_nfit_res(start);
225 struct resource *res = nfit_res->res + 1;
227 if (start != res->start || resource_size(res) != n)
228 pr_info("%s: start: %llx n: %llx mismatch: %pr\n",
229 __func__, start, n, res);
231 memset(res, 0, sizeof(*res));
235 __release_region(parent, start, n);
237 EXPORT_SYMBOL(__wrap___release_region);
239 MODULE_LICENSE("GPL v2");