LXR linux/drivers/nvdimm/pmem.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __NVDIMM_PMEM_H__
   3#define __NVDIMM_PMEM_H__
   4#include <linux/badblocks.h>
   5#include <linux/types.h>
   6#include <linux/pfn_t.h>
   7#include <linux/fs.h>
   8
   9/* this definition is in it's own header for tools/testing/nvdimm to consume */
  10struct pmem_device {
  11        /* One contiguous memory region per device */
  12        phys_addr_t             phys_addr;
  13        /* when non-zero this device is hosting a 'pfn' instance */
  14        phys_addr_t             data_offset;
  15        u64                     pfn_flags;
  16        void                    *virt_addr;
  17        /* immutable base size of the namespace */
  18        size_t                  size;
  19        /* trim size when namespace capacity has been section aligned */
  20        u32                     pfn_pad;
  21        struct kernfs_node      *bb_state;
  22        struct badblocks        bb;
  23        struct dax_device       *dax_dev;
  24        struct gendisk          *disk;
  25        struct dev_pagemap      pgmap;
  26};
  27
  28long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
  29                long nr_pages, void **kaddr, pfn_t *pfn);
  30#endif /* __NVDIMM_PMEM_H__ */
  31