1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2016 - 2018 Intel Corporation. All rights reserved. */
5 #include <linux/device.h>
6 #include <linux/range.h>
13 /* dax bus specific ioresource flags */
14 #define IORESOURCE_DAX_STATIC BIT(0)
15 #define IORESOURCE_DAX_KMEM BIT(1)
17 struct dax_region *alloc_dax_region(struct device *parent, int region_id,
18 struct range *range, int target_node, unsigned int align,
22 struct dax_region *dax_region;
23 struct dev_pagemap *pgmap;
26 bool memmap_on_memory;
29 struct dev_dax *devm_create_dev_dax(struct dev_dax_data *data);
31 enum dax_driver_type {
36 struct dax_device_driver {
37 struct device_driver drv;
39 enum dax_driver_type type;
40 int (*probe)(struct dev_dax *dev);
41 void (*remove)(struct dev_dax *dev);
44 int __dax_driver_register(struct dax_device_driver *dax_drv,
45 struct module *module, const char *mod_name);
46 #define dax_driver_register(driver) \
47 __dax_driver_register(driver, THIS_MODULE, KBUILD_MODNAME)
48 void dax_driver_unregister(struct dax_device_driver *dax_drv);
49 void kill_dev_dax(struct dev_dax *dev_dax);
50 bool static_dev_dax(struct dev_dax *dev_dax);
52 #define MODULE_ALIAS_DAX_DEVICE(type) \
53 MODULE_ALIAS("dax:t" __stringify(type) "*")
54 #define DAX_DEVICE_MODALIAS_FMT "dax:t%d"
56 #endif /* __DAX_BUS_H__ */