Release 4.13 drivers/nvdimm/pmem.h

#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>

#ifdef CONFIG_ARCH_HAS_PMEM_API

#define ARCH_MEMREMAP_PMEM MEMREMAP_WB
void arch_wb_cache_pmem(void *addr, size_t size);
void arch_invalidate_pmem(void *addr, size_t size);
#else

#define ARCH_MEMREMAP_PMEM MEMREMAP_WT


static inline void arch_wb_cache_pmem(void *addr, size_t size)
{
}
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static inline void arch_invalidate_pmem(void *addr, size_t size)
{
}
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#endif

/* 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__ */
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Directory: drivers/nvdimm

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