mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/*
|
|
* 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>
|
|
|
|
/**
|
|
* struct dax_region - mapping infrastructure for dax devices
|
|
* @id: kernel-wide unique region for a memory range
|
|
* @base: linear address corresponding to @res
|
|
* @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 ida ida;
|
|
void *base;
|
|
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
|
|
* @id - child id in the region
|
|
* @num_resources - number of physical address extents in this device
|
|
* @res - array of physical address ranges
|
|
*/
|
|
struct dev_dax {
|
|
struct dax_region *region;
|
|
struct dax_device *dax_dev;
|
|
struct device dev;
|
|
int id;
|
|
int num_resources;
|
|
struct resource res[0];
|
|
};
|
|
#endif
|