drivers/nvdimm/pmem.h

   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 long pmem_direct_access(struct block_device *bdev, sector_t sector,
   9                       void **kaddr, pfn_t *pfn, long size);
  10 /* this definition is in it's own header for tools/testing/nvdimm to consume */
  11 struct pmem_device {
  12         /* One contiguous memory region per device */
  13         phys_addr_t             phys_addr;
  14         /* when non-zero this device is hosting a 'pfn' instance */
  15         phys_addr_t             data_offset;
  16         u64                     pfn_flags;
  17         void                    *virt_addr;
  18         /* immutable base size of the namespace */
  19         size_t                  size;
  20         /* trim size when namespace capacity has been section aligned */
  21         u32                     pfn_pad;
  22         struct badblocks        bb;
  23 };
  24 #endif /* __NVDIMM_PMEM_H__ */