From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/dax/bus.h | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 drivers/dax/bus.h (limited to 'drivers/dax/bus.h') diff --git a/drivers/dax/bus.h b/drivers/dax/bus.h new file mode 100644 index 0000000000..1ccd233601 --- /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 +#include + +struct dev_dax; +struct resource; +struct dax_device; +struct dax_region; + +/* dax bus specific ioresource flags */ +#define IORESOURCE_DAX_STATIC BIT(0) +#define IORESOURCE_DAX_KMEM BIT(1) + +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); + +enum dax_driver_type { + DAXDRV_KMEM_TYPE, + DAXDRV_DEVICE_TYPE, +}; + +struct dax_device_driver { + struct device_driver drv; + struct list_head ids; + enum dax_driver_type type; + 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); + +#define MODULE_ALIAS_DAX_DEVICE(type) \ + MODULE_ALIAS("dax:t" __stringify(type) "*") +#define DAX_DEVICE_MODALIAS_FMT "dax:t%d" + +#endif /* __DAX_BUS_H__ */ -- cgit v1.2.3