diff options
Diffstat (limited to 'drivers/dax/bus.h')
| -rw-r--r-- | drivers/dax/bus.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/dax/bus.h b/drivers/dax/bus.h new file mode 100644 index 000000000..fbb940293 --- /dev/null +++ b/drivers/dax/bus.h @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2016 - 2018 Intel Corporation. All rights reserved. */ +#ifndef __DAX_BUS_H__ +#define __DAX_BUS_H__ +#include <linux/device.h> +#include <linux/range.h> + +struct dev_dax; +struct resource; +struct dax_device; +struct dax_region; +void dax_region_put(struct dax_region *dax_region); + +#define IORESOURCE_DAX_STATIC (1UL << 0) +struct dax_region *alloc_dax_region(struct device *parent, int region_id, + struct range *range, int target_node, unsigned int align, + unsigned long flags); + +struct dev_dax_data { + struct dax_region *dax_region; + struct dev_pagemap *pgmap; + resource_size_t size; + int id; +}; + +struct dev_dax *devm_create_dev_dax(struct dev_dax_data *data); + +struct dax_device_driver { + struct device_driver drv; + struct list_head ids; + int match_always; + int (*probe)(struct dev_dax *dev); + void (*remove)(struct dev_dax *dev); +}; + +int __dax_driver_register(struct dax_device_driver *dax_drv, + struct module *module, const char *mod_name); +#define dax_driver_register(driver) \ + __dax_driver_register(driver, THIS_MODULE, KBUILD_MODNAME) +void dax_driver_unregister(struct dax_device_driver *dax_drv); +void kill_dev_dax(struct dev_dax *dev_dax); +bool static_dev_dax(struct dev_dax *dev_dax); + +/* + * While run_dax() is potentially a generic operation that could be + * defined in include/linux/dax.h we don't want to grow any users + * outside of drivers/dax/ + */ +void run_dax(struct dax_device *dax_dev); + +#define MODULE_ALIAS_DAX_DEVICE(type) \ + MODULE_ALIAS("dax:t" __stringify(type) "*") +#define DAX_DEVICE_MODALIAS_FMT "dax:t%d" + +#endif /* __DAX_BUS_H__ */ |