/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __NVDIMM_PMEM_H__ #define __NVDIMM_PMEM_H__ #include <linux/page-flags.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; struct dev_pagemap pgmap; }; long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff, long nr_pages, void **kaddr, pfn_t *pfn); #ifdef [31mCONFIG_MEMORY_FAILURE[0m static inline bool test_and_clear_pmem_poison(struct page *page) { return TestClearPageHWPoison(page); } #else static inline bool test_and_clear_pmem_poison(struct page *page) { return false; } #endif #endif /* __NVDIMM_PMEM_H__ */ |