blob: fce248a1fc87c56f6564a03166c54e8a6712dd6f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
#ifndef __NVDIMM_PMEM_H__
#define __NVDIMM_PMEM_H__
#include <linux/badblocks.h>
#include <linux/types.h>
#include <linux/pfn_t.h>
#include <linux/fs.h>
#ifdef CONFIG_ARCH_HAS_PMEM_API
#define ARCH_MEMREMAP_PMEM MEMREMAP_WB
void arch_wb_cache_pmem(void *addr, size_t size);
void arch_invalidate_pmem(void *addr, size_t size);
#else
#define ARCH_MEMREMAP_PMEM MEMREMAP_WT
static inline void arch_wb_cache_pmem(void *addr, size_t size)
{
}
static inline void arch_invalidate_pmem(void *addr, size_t size)
{
}
#endif
/* 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 badblocks bb;
struct dax_device *dax_dev;
struct gendisk *disk;
};
long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
long nr_pages, void **kaddr, pfn_t *pfn);
#endif /* __NVDIMM_PMEM_H__ */
|
