2017-07-13 00:58:21 +00:00
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright(c) 2016 - 2018 Intel Corporation. All rights reserved. */
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#ifndef __DAX_BUS_H__
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#define __DAX_BUS_H__
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2017-07-16 20:51:53 +00:00
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#include <linux/device.h>
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2020-10-13 23:49:43 +00:00
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#include <linux/range.h>
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2017-07-16 20:51:53 +00:00
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2017-07-13 00:58:21 +00:00
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struct dev_dax;
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struct resource;
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struct dax_device;
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struct dax_region;
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void dax_region_put(struct dax_region *dax_region);
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2020-10-13 23:50:03 +00:00
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#define IORESOURCE_DAX_STATIC (1UL << 0)
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2017-07-13 00:58:21 +00:00
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struct dax_region *alloc_dax_region(struct device *parent, int region_id,
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2020-10-13 23:50:29 +00:00
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struct range *range, int target_node, unsigned int align,
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unsigned long flags);
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2017-07-16 20:51:53 +00:00
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2020-10-13 23:49:38 +00:00
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struct dev_dax_data {
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struct dax_region *dax_region;
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struct dev_pagemap *pgmap;
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resource_size_t size;
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2020-10-13 23:49:38 +00:00
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int id;
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};
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2017-07-16 20:51:53 +00:00
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2020-10-13 23:49:38 +00:00
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struct dev_dax *devm_create_dev_dax(struct dev_dax_data *data);
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2017-07-16 20:51:53 +00:00
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2018-11-07 23:31:23 +00:00
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struct dax_device_driver {
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struct device_driver drv;
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struct list_head ids;
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int match_always;
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2020-10-13 23:50:08 +00:00
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int (*probe)(struct dev_dax *dev);
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2021-02-05 22:28:42 +00:00
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void (*remove)(struct dev_dax *dev);
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2018-11-07 23:31:23 +00:00
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};
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int __dax_driver_register(struct dax_device_driver *dax_drv,
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2017-07-13 00:58:21 +00:00
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struct module *module, const char *mod_name);
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#define dax_driver_register(driver) \
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__dax_driver_register(driver, THIS_MODULE, KBUILD_MODNAME)
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2018-11-07 23:31:23 +00:00
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void dax_driver_unregister(struct dax_device_driver *dax_drv);
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2017-07-13 00:58:21 +00:00
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void kill_dev_dax(struct dev_dax *dev_dax);
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2022-01-14 22:04:33 +00:00
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bool static_dev_dax(struct dev_dax *dev_dax);
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2017-07-13 00:58:21 +00:00
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/*
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* While run_dax() is potentially a generic operation that could be
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* defined in include/linux/dax.h we don't want to grow any users
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* outside of drivers/dax/
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*/
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void run_dax(struct dax_device *dax_dev);
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#define MODULE_ALIAS_DAX_DEVICE(type) \
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MODULE_ALIAS("dax:t" __stringify(type) "*")
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#define DAX_DEVICE_MODALIAS_FMT "dax:t%d"
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2017-07-13 00:58:21 +00:00
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#endif /* __DAX_BUS_H__ */
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