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