[linux-2.6-block.git] / drivers / nvdimm / pmem.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NVDIMM_PMEM_H__
#define __NVDIMM_PMEM_H__
#include <linux/badblocks.h>
#include <linux/types.h>
#include <linux/pfn_t.h>
#include <linux/fs.h>

/* this definition is in it's own header for tools/testing/nvdimm to consume */
struct pmem_device {
	/* One contiguous memory region per device */
	phys_addr_t		phys_addr;
	/* when non-zero this device is hosting a 'pfn' instance */
	phys_addr_t		data_offset;
	u64			pfn_flags;
	void			*virt_addr;
	/* immutable base size of the namespace */
	size_t			size;
	/* trim size when namespace capacity has been section aligned */
	u32			pfn_pad;
	struct kernfs_node	*bb_state;
	struct badblocks	bb;
	struct dax_device	*dax_dev;
	struct gendisk		*disk;
};

long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
		long nr_pages, void **kaddr, pfn_t *pfn);
#endif /* __NVDIMM_PMEM_H__ */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
f295e53b DW	2	#ifndef __NVDIMM_PMEM_H__
	3	#define __NVDIMM_PMEM_H__
	4	#include <linux/badblocks.h>
	5	#include <linux/types.h>
	6	#include <linux/pfn_t.h>
	7	#include <linux/fs.h>
	8
f295e53b DW	9	/* this definition is in it's own header for tools/testing/nvdimm to consume */
	10	struct pmem_device {
	11	/* One contiguous memory region per device */
	12	phys_addr_t phys_addr;
	13	/* when non-zero this device is hosting a 'pfn' instance */
	14	phys_addr_t data_offset;
	15	u64 pfn_flags;
7a9eb206	16	void *virt_addr;
f295e53b DW	17	/* immutable base size of the namespace */
	18	size_t size;
	19	/* trim size when namespace capacity has been section aligned */
	20	u32 pfn_pad;
975750a9	21	struct kernfs_node *bb_state;
f295e53b	22	struct badblocks bb;
c1d6e828 DW	23	struct dax_device *dax_dev;
c1d6e828 DW	24	struct gendisk *disk;
f295e53b	25	};
c1d6e828 DW	26
	27	long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
	28	long nr_pages, void *kaddr, pfn_t pfn);
f295e53b	29	#endif /* __NVDIMM_PMEM_H__ */