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43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
#ifndef __NVDIMM_PMEM_H__
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#define __NVDIMM_PMEM_H__
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#include <linux/badblocks.h>
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#include <linux/types.h>
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#include <linux/pfn_t.h>
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#include <linux/fs.h>
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#ifdef CONFIG_ARCH_HAS_PMEM_API
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#define ARCH_MEMREMAP_PMEM MEMREMAP_WB
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void arch_wb_cache_pmem(void *addr, size_t size);
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void arch_invalidate_pmem(void *addr, size_t size);
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#else
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#define ARCH_MEMREMAP_PMEM MEMREMAP_WT
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static inline void arch_wb_cache_pmem(void *addr, size_t size)
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{
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}
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static inline void arch_invalidate_pmem(void *addr, size_t size)
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{
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}
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#endif
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/* this definition is in it's own header for tools/testing/nvdimm to consume */
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struct pmem_device {
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/* One contiguous memory region per device */
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phys_addr_t phys_addr;
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/* when non-zero this device is hosting a 'pfn' instance */
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phys_addr_t data_offset;
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u64 pfn_flags;
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void *virt_addr;
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/* immutable base size of the namespace */
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size_t size;
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/* trim size when namespace capacity has been section aligned */
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u32 pfn_pad;
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struct kernfs_node *bb_state;
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struct badblocks bb;
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struct dax_device *dax_dev;
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struct gendisk *disk;
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};
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long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
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long nr_pages, void **kaddr, pfn_t *pfn);
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#endif /* __NVDIMM_PMEM_H__ */
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