Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef __NVDIMM_PMEM_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define __NVDIMM_PMEM_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <linux/page-flags.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/badblocks.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/pfn_t.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /* this definition is in it's own header for tools/testing/nvdimm to consume */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) struct pmem_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	/* One contiguous memory region per device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	phys_addr_t		phys_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	/* when non-zero this device is hosting a 'pfn' instance */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	phys_addr_t		data_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	u64			pfn_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	void			*virt_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	/* immutable base size of the namespace */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	size_t			size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	/* trim size when namespace capacity has been section aligned */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	u32			pfn_pad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	struct kernfs_node	*bb_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	struct badblocks	bb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	struct dax_device	*dax_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	struct gendisk		*disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	struct dev_pagemap	pgmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) long __pmem_direct_access(struct pmem_device *pmem, pgoff_t pgoff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		long nr_pages, void **kaddr, pfn_t *pfn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #ifdef CONFIG_MEMORY_FAILURE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static inline bool test_and_clear_pmem_poison(struct page *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	return TestClearPageHWPoison(page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static inline bool test_and_clear_pmem_poison(struct page *page)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #endif /* __NVDIMM_PMEM_H__ */