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_memremap(resource_size_t offset, size_t size,
86 struct nfit_test_resource *nfit_res;
89 nfit_res = get_nfit_res(offset);
92 return (void __iomem *) nfit_res->buf + offset
93 - nfit_res->res->start;
94 return memremap(offset, size, flags);
96 EXPORT_SYMBOL(__wrap_memremap);
98 void __iomem *__wrap_ioremap_nocache(resource_size_t offset, unsigned long size)
100 return __nfit_test_ioremap(offset, size, ioremap_nocache);
102 EXPORT_SYMBOL(__wrap_ioremap_nocache);
104 void __iomem *__wrap_ioremap_wc(resource_size_t offset, unsigned long size)
106 return __nfit_test_ioremap(offset, size, ioremap_wc);
108 EXPORT_SYMBOL(__wrap_ioremap_wc);
110 void __wrap_iounmap(volatile void __iomem *addr)
112 struct nfit_test_resource *nfit_res;
115 nfit_res = get_nfit_res((unsigned long) addr);
119 return iounmap(addr);
121 EXPORT_SYMBOL(__wrap_iounmap);
123 void __wrap_memunmap(void *addr)
125 struct nfit_test_resource *nfit_res;
128 nfit_res = get_nfit_res((unsigned long) addr);
132 return memunmap(addr);
134 EXPORT_SYMBOL(__wrap_memunmap);
136 struct resource *__wrap___request_region(struct resource *parent,
137 resource_size_t start, resource_size_t n, const char *name,
140 struct nfit_test_resource *nfit_res;
142 if (parent == &iomem_resource) {
144 nfit_res = get_nfit_res(start);
147 struct resource *res = nfit_res->res + 1;
149 if (start + n > nfit_res->res->start
150 + resource_size(nfit_res->res)) {
151 pr_debug("%s: start: %llx n: %llx overflow: %pr\n",
158 res->end = start + n - 1;
160 res->flags = resource_type(parent);
161 res->flags |= IORESOURCE_BUSY | flags;
162 pr_debug("%s: %pr\n", __func__, res);
166 return __request_region(parent, start, n, name, flags);
168 EXPORT_SYMBOL(__wrap___request_region);
170 void __wrap___release_region(struct resource *parent, resource_size_t start,
173 struct nfit_test_resource *nfit_res;
175 if (parent == &iomem_resource) {
177 nfit_res = get_nfit_res(start);
180 struct resource *res = nfit_res->res + 1;
182 if (start != res->start || resource_size(res) != n)
183 pr_info("%s: start: %llx n: %llx mismatch: %pr\n",
184 __func__, start, n, res);
186 memset(res, 0, sizeof(*res));
190 __release_region(parent, start, n);
192 EXPORT_SYMBOL(__wrap___release_region);
194 MODULE_LICENSE("GPL v2");