blob: 620c3f4eefe7d8f414baa79d9e47b827e6277f0b (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/*
* Copyright(c) 2016 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.
*/
#ifndef __DAX_PRIVATE_H__
#define __DAX_PRIVATE_H__
#include <linux/device.h>
#include <linux/cdev.h>
/* private routines between core files */
struct dax_device;
struct dax_device *inode_dax(struct inode *inode);
struct inode *dax_inode(struct dax_device *dax_dev);
/* temporary until devm_create_dax_dev moves to bus.c */
extern const struct attribute_group *dax_attribute_groups[];
void unregister_dev_dax(void *dev);
/**
* struct dax_region - mapping infrastructure for dax devices
* @id: kernel-wide unique region for a memory range
* @kref: to pin while other agents have a need to do lookups
* @dev: parent device backing this region
* @align: allocation and mapping alignment for child dax devices
* @res: physical address range of the region
* @pfn_flags: identify whether the pfns are paged back or not
*/
struct dax_region {
int id;
struct kref kref;
struct device *dev;
unsigned int align;
struct resource res;
unsigned long pfn_flags;
};
/**
* struct dev_dax - instance data for a subdivision of a dax region
* @region - parent region
* @dax_dev - core dax functionality
* @dev - device core
*/
struct dev_dax {
struct dax_region *region;
struct dax_device *dax_dev;
struct device dev;
};
static inline struct dev_dax *to_dev_dax(struct device *dev)
{
return container_of(dev, struct dev_dax, dev);
}
#endif
|
