Release 4.11 tools/testing/nvdimm/test/iomap.c

/*
 * Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */
#include <linux/memremap.h>
#include <linux/rculist.h>
#include <linux/export.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/pfn_t.h>
#include <linux/acpi.h>
#include <linux/io.h>
#include <linux/mm.h>
#include "nfit_test.h"

static LIST_HEAD(iomap_head);


static struct iomap_ops {
	
nfit_test_lookup_fn nfit_test_lookup;
	
nfit_test_evaluate_dsm_fn evaluate_dsm;
	
struct list_head list;
} 
iomap_ops = {
	.list = LIST_HEAD_INIT(iomap_ops.list),
};



void nfit_test_setup(nfit_test_lookup_fn lookup,
		nfit_test_evaluate_dsm_fn evaluate)
{
	iomap_ops.nfit_test_lookup = lookup;
	iomap_ops.evaluate_dsm = evaluate;
	list_add_rcu(&iomap_ops.list, &iomap_head);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
34
100.00%
2
100.00%
Total
34
100.00%
2
100.00%


EXPORT_SYMBOL(nfit_test_setup);



void nfit_test_teardown(void)
{
	list_del_rcu(&iomap_ops.list);
	synchronize_rcu();
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
18
100.00%
1
100.00%
Total
18
100.00%
1
100.00%


EXPORT_SYMBOL(nfit_test_teardown);



static struct nfit_test_resource *__get_nfit_res(resource_size_t resource)
{
	struct iomap_ops *ops;

	ops = list_first_or_null_rcu(&iomap_head, typeof(*ops), list);
	if (ops)
		return ops->nfit_test_lookup(resource);
	return NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
47
100.00%
2
100.00%
Total
47
100.00%
2
100.00%



struct nfit_test_resource *get_nfit_res(resource_size_t resource)
{
	struct nfit_test_resource *res;

	rcu_read_lock();
	res = __get_nfit_res(resource);
	rcu_read_unlock();

	return res;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
31
100.00%
1
100.00%
Total
31
100.00%
1
100.00%


EXPORT_SYMBOL(get_nfit_res);


void __iomem *__nfit_test_ioremap(resource_size_t offset, unsigned long size,
		void __iomem *(*fallback_fn)(resource_size_t, unsigned long))
{
	struct nfit_test_resource *nfit_res = get_nfit_res(offset);

	if (nfit_res)
		return (void __iomem *) nfit_res->buf + offset
			- nfit_res->res.start;
	return fallback_fn(offset, size);
}



void __iomem *__wrap_devm_ioremap_nocache(struct device *dev,
		resource_size_t offset, unsigned long size)
{
	struct nfit_test_resource *nfit_res = get_nfit_res(offset);

	if (nfit_res)
		return (void __iomem *) nfit_res->buf + offset
			- nfit_res->res.start;
	return devm_ioremap_nocache(dev, offset, size);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
61
100.00%
3
100.00%
Total
61
100.00%
3
100.00%


EXPORT_SYMBOL(__wrap_devm_ioremap_nocache);



void *__wrap_devm_memremap(struct device *dev, resource_size_t offset,
		size_t size, unsigned long flags)
{
	struct nfit_test_resource *nfit_res = get_nfit_res(offset);

	if (nfit_res)
		return nfit_res->buf + offset - nfit_res->res.start;
	return devm_memremap(dev, offset, size, flags);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
51
85.00%
4
80.00%
Christoph Hellwig
9
15.00%
1
20.00%
Total
60
100.00%
5
100.00%


EXPORT_SYMBOL(__wrap_devm_memremap);



void *__wrap_devm_memremap_pages(struct device *dev, struct resource *res,
		struct percpu_ref *ref, struct vmem_altmap *altmap)
{
	resource_size_t offset = res->start;
	struct nfit_test_resource *nfit_res = get_nfit_res(offset);

	if (nfit_res)
		return nfit_res->buf + offset - nfit_res->res.start;
	return devm_memremap_pages(dev, res, ref, altmap);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
72
100.00%
3
100.00%
Total
72
100.00%
3
100.00%


EXPORT_SYMBOL(__wrap_devm_memremap_pages);



pfn_t __wrap_phys_to_pfn_t(phys_addr_t addr, unsigned long flags)
{
	struct nfit_test_resource *nfit_res = get_nfit_res(addr);

	if (nfit_res)
		flags &= ~PFN_MAP;
        return phys_to_pfn_t(addr, flags);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
39
100.00%
3
100.00%
Total
39
100.00%
3
100.00%


EXPORT_SYMBOL(__wrap_phys_to_pfn_t);



void *__wrap_memremap(resource_size_t offset, size_t size,
		unsigned long flags)
{
	struct nfit_test_resource *nfit_res = get_nfit_res(offset);

	if (nfit_res)
		return nfit_res->buf + offset - nfit_res->res.start;
	return memremap(offset, size, flags);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Ross Zwisler
50
94.34%
1
33.33%
Dan J Williams
3
5.66%
2
66.67%
Total
53
100.00%
3
100.00%


EXPORT_SYMBOL(__wrap_memremap);



void __wrap_devm_memunmap(struct device *dev, void *addr)
{
	struct nfit_test_resource *nfit_res = get_nfit_res((long) addr);

	if (nfit_res)
		return;
	return devm_memunmap(dev, addr);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
40
100.00%
2
100.00%
Total
40
100.00%
2
100.00%


EXPORT_SYMBOL(__wrap_devm_memunmap);



void __iomem *__wrap_ioremap_nocache(resource_size_t offset, unsigned long size)
{
	return __nfit_test_ioremap(offset, size, ioremap_nocache);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
24
100.00%
1
100.00%
Total
24
100.00%
1
100.00%


EXPORT_SYMBOL(__wrap_ioremap_nocache);



void __iomem *__wrap_ioremap_wc(resource_size_t offset, unsigned long size)
{
	return __nfit_test_ioremap(offset, size, ioremap_wc);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
24
100.00%
2
100.00%
Total
24
100.00%
2
100.00%


EXPORT_SYMBOL(__wrap_ioremap_wc);



void __wrap_iounmap(volatile void __iomem *addr)
{
	struct nfit_test_resource *nfit_res = get_nfit_res((long) addr);
	if (nfit_res)
		return;
	return iounmap(addr);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
35
100.00%
3
100.00%
Total
35
100.00%
3
100.00%


EXPORT_SYMBOL(__wrap_iounmap);



void __wrap_memunmap(void *addr)
{
	struct nfit_test_resource *nfit_res = get_nfit_res((long) addr);

	if (nfit_res)
		return;
	return memunmap(addr);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Ross Zwisler
31
93.94%
1
50.00%
Dan J Williams
2
6.06%
1
50.00%
Total
33
100.00%
2
100.00%


EXPORT_SYMBOL(__wrap_memunmap);

static bool nfit_test_release_region(struct device *dev,
		struct resource *parent, resource_size_t start,
		resource_size_t n);



static void nfit_devres_release(struct device *dev, void *data)
{
	struct resource *res = *((struct resource **) data);

	WARN_ON(!nfit_test_release_region(NULL, &iomem_resource, res->start,
			resource_size(res)));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
52
100.00%
2
100.00%
Total
52
100.00%
2
100.00%



static int match(struct device *dev, void *__res, void *match_data)
{
	struct resource *res = *((struct resource **) __res);
	resource_size_t start = *((resource_size_t *) match_data);

	return res->start == start;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
54
100.00%
2
100.00%
Total
54
100.00%
2
100.00%



static bool nfit_test_release_region(struct device *dev,
		struct resource *parent, resource_size_t start,
		resource_size_t n)
{
	if (parent == &iomem_resource) {
		struct nfit_test_resource *nfit_res = get_nfit_res(start);

		if (nfit_res) {
			struct nfit_test_request *req;
			struct resource *res = NULL;

			if (dev) {
				devres_release(dev, nfit_devres_release, match,
						&start);
				return true;
			}

			spin_lock(&nfit_res->lock);
			list_for_each_entry(req, &nfit_res->requests, list)
				if (req->res.start == start) {
					res = &req->res;
					list_del(&req->list);
					break;
				}
			spin_unlock(&nfit_res->lock);

			WARN(!res || resource_size(res) != n,
					"%s: start: %llx n: %llx mismatch: %pr\n",
						__func__, start, n, res);
			if (res)
				kfree(req);
			return true;
		}
	}
	return false;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
170
100.00%
2
100.00%
Total
170
100.00%
2
100.00%



static struct resource *nfit_test_request_region(struct device *dev,
		struct resource *parent, resource_size_t start,
		resource_size_t n, const char *name, int flags)
{
	struct nfit_test_resource *nfit_res;

	if (parent == &iomem_resource) {
		nfit_res = get_nfit_res(start);
		if (nfit_res) {
			struct nfit_test_request *req;
			struct resource *res = NULL;

			if (start + n > nfit_res->res.start
					+ resource_size(&nfit_res->res)) {
				pr_debug("%s: start: %llx n: %llx overflow: %pr\n",
						__func__, start, n,
						&nfit_res->res);
				return NULL;
			}

			spin_lock(&nfit_res->lock);
			list_for_each_entry(req, &nfit_res->requests, list)
				if (start == req->res.start) {
					res = &req->res;
					break;
				}
			spin_unlock(&nfit_res->lock);

			if (res) {
				WARN(1, "%pr already busy\n", res);
				return NULL;
			}

			req = kzalloc(sizeof(*req), GFP_KERNEL);
			if (!req)
				return NULL;
			INIT_LIST_HEAD(&req->list);
			res = &req->res;

			res->start = start;
			res->end = start + n - 1;
			res->name = name;
			res->flags = resource_type(parent);
			res->flags |= IORESOURCE_BUSY | flags;
			spin_lock(&nfit_res->lock);
			list_add(&req->list, &nfit_res->requests);
			spin_unlock(&nfit_res->lock);

			if (dev) {
				struct resource **d;

				d = devres_alloc(nfit_devres_release,
						sizeof(struct resource *),
						GFP_KERNEL);
				if (!d)
					return NULL;
				*d = res;
				devres_add(dev, d);
			}

			pr_debug("%s: %pr\n", __func__, res);
			return res;
		}
	}
	if (dev)
		return __devm_request_region(dev, parent, start, n, name);
	return __request_region(parent, start, n, name, flags);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
352
95.14%
2
66.67%
Christoph Hellwig
18
4.86%
1
33.33%
Total
370
100.00%
3
100.00%



struct resource *__wrap___request_region(struct resource *parent,
		resource_size_t start, resource_size_t n, const char *name,
		int flags)
{
	return nfit_test_request_region(NULL, parent, start, n, name, flags);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Christoph Hellwig
42
100.00%
1
100.00%
Total
42
100.00%
1
100.00%


EXPORT_SYMBOL(__wrap___request_region);



int __wrap_insert_resource(struct resource *parent, struct resource *res)
{
	if (get_nfit_res(res->start))
		return 0;
	return insert_resource(parent, res);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
35
100.00%
1
100.00%
Total
35
100.00%
1
100.00%


EXPORT_SYMBOL(__wrap_insert_resource);



int __wrap_remove_resource(struct resource *res)
{
	if (get_nfit_res(res->start))
		return 0;
	return remove_resource(res);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
28
100.00%
1
100.00%
Total
28
100.00%
1
100.00%


EXPORT_SYMBOL(__wrap_remove_resource);



struct resource *__wrap___devm_request_region(struct device *dev,
		struct resource *parent, resource_size_t start,
		resource_size_t n, const char *name)
{
	if (!dev)
		return NULL;
	return nfit_test_request_region(dev, parent, start, n, name, 0);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Christoph Hellwig
52
100.00%
1
100.00%
Total
52
100.00%
1
100.00%


EXPORT_SYMBOL(__wrap___devm_request_region);



void __wrap___release_region(struct resource *parent, resource_size_t start,
		resource_size_t n)
{
	if (!nfit_test_release_region(NULL, parent, start, n))
		__release_region(parent, start, n);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
39
100.00%
3
100.00%
Total
39
100.00%
3
100.00%


EXPORT_SYMBOL(__wrap___release_region);



void __wrap___devm_release_region(struct device *dev, struct resource *parent,
		resource_size_t start, resource_size_t n)
{
	if (!nfit_test_release_region(dev, parent, start, n))
		__devm_release_region(dev, parent, start, n);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
46
100.00%
2
100.00%
Total
46
100.00%
2
100.00%


EXPORT_SYMBOL(__wrap___devm_release_region);



acpi_status __wrap_acpi_evaluate_object(acpi_handle handle, acpi_string path,
		struct acpi_object_list *p, struct acpi_buffer *buf)
{
	struct nfit_test_resource *nfit_res = get_nfit_res((long) handle);
	union acpi_object **obj;

	if (!nfit_res || strcmp(path, "_FIT") || !buf)
		return acpi_evaluate_object(handle, path, p, buf);

	obj = nfit_res->buf;
	buf->length = sizeof(union acpi_object);
	buf->pointer = *obj;
	return AE_OK;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
93
100.00%
1
100.00%
Total
93
100.00%
1
100.00%


EXPORT_SYMBOL(__wrap_acpi_evaluate_object);



union acpi_object * __wrap_acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid,
		u64 rev, u64 func, union acpi_object *argv4)
{
	union acpi_object *obj = ERR_PTR(-ENXIO);
	struct iomap_ops *ops;

	rcu_read_lock();
	ops = list_first_or_null_rcu(&iomap_head, typeof(*ops), list);
	if (ops)
		obj = ops->evaluate_dsm(handle, uuid, rev, func, argv4);
	rcu_read_unlock();

	if (IS_ERR(obj))
		return acpi_evaluate_dsm(handle, uuid, rev, func, argv4);
	return obj;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
109
100.00%
1
100.00%
Total
109
100.00%
1
100.00%


EXPORT_SYMBOL(__wrap_acpi_evaluate_dsm);

MODULE_LICENSE("GPL v2");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Dan J Williams
1705
88.39%
15
88.24%
Christoph Hellwig
133
6.89%
1
5.88%
Ross Zwisler
91
4.72%
1
5.88%
Total
1929
100.00%
17
100.00%
Directory: tools/testing/nvdimm/test

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.