diff options
Diffstat (limited to 'drivers/dax/dax-private.h')
| -rw-r--r-- | drivers/dax/dax-private.h | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/drivers/dax/dax-private.h b/drivers/dax/dax-private.h index 1c974b7caae6..0867115aeef2 100644 --- a/drivers/dax/dax-private.h +++ b/drivers/dax/dax-private.h @@ -40,6 +40,12 @@ struct dax_region { struct device *youngest; }; +/** + * struct dax_mapping - device to display mapping range attributes + * @dev: device representing this range + * @range_id: index within dev_dax ranges array + * @id: ida of this mapping + */ struct dax_mapping { struct device dev; int range_id; @@ -47,35 +53,53 @@ struct dax_mapping { }; /** + * struct dev_dax_range - tuple represenging a range of memory used by dev_dax + * @pgoff: page offset + * @range: resource-span + * @mapping: reference to the dax_mapping for this range + */ +struct dev_dax_range { + unsigned long pgoff; + struct range range; + struct dax_mapping *mapping; +}; + +/** * struct dev_dax - instance data for a subdivision of a dax region, and * data while the device is activated in the driver. * @region - parent region * @dax_dev - core dax functionality * @target_node: effective numa node if dev_dax memory range is onlined - * @id: ida allocated id + * @dyn_id: is this a dynamic or statically created instance + * @id: ida allocated id when the dax_region is not static * @ida: mapping id allocator * @dev - device core * @pgmap - pgmap for memmap setup / lifetime (driver owned) * @nr_range: size of @ranges - * @ranges: resource-span + pgoff tuples for the instance + * @ranges: range tuples of memory used */ struct dev_dax { struct dax_region *region; struct dax_device *dax_dev; unsigned int align; int target_node; + bool dyn_id; int id; struct ida ida; struct device dev; struct dev_pagemap *pgmap; + bool memmap_on_memory; int nr_range; - struct dev_dax_range { - unsigned long pgoff; - struct range range; - struct dax_mapping *mapping; - } *ranges; + struct dev_dax_range *ranges; }; +/* + * 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); + static inline struct dev_dax *to_dev_dax(struct device *dev) { return container_of(dev, struct dev_dax, dev); |