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43 lines
1.1 KiB
43 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __NVDIMM_PMEM_H__ |
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#define __NVDIMM_PMEM_H__ |
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#include <linux/page-flags.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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/* 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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struct dev_pagemap pgmap; |
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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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#ifdef CONFIG_MEMORY_FAILURE |
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static inline bool test_and_clear_pmem_poison(struct page *page) |
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{ |
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return TestClearPageHWPoison(page); |
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} |
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#else |
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static inline bool test_and_clear_pmem_poison(struct page *page) |
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{ |
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return false; |
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} |
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#endif |
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#endif /* __NVDIMM_PMEM_H__ */
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