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-rw-r--r--include/linux/pmem.h142
1 files changed, 0 insertions, 142 deletions
diff --git a/include/linux/pmem.h b/include/linux/pmem.h
deleted file mode 100644
index 71ecf3d46aac..000000000000
--- a/include/linux/pmem.h
+++ /dev/null
@@ -1,142 +0,0 @@
-/*
- * Copyright(c) 2015 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-#ifndef __PMEM_H__
-#define __PMEM_H__
-
-#include <linux/io.h>
-#include <linux/uio.h>
-
-#ifdef CONFIG_ARCH_HAS_PMEM_API
-#define ARCH_MEMREMAP_PMEM MEMREMAP_WB
-#include <asm/pmem.h>
-#else
-#define ARCH_MEMREMAP_PMEM MEMREMAP_WT
-/*
- * These are simply here to enable compilation, all call sites gate
- * calling these symbols with arch_has_pmem_api() and redirect to the
- * implementation in asm/pmem.h.
- */
-static inline void arch_memcpy_to_pmem(void *dst, const void *src, size_t n)
-{
- BUG();
-}
-
-static inline size_t arch_copy_from_iter_pmem(void *addr, size_t bytes,
- struct iov_iter *i)
-{
- BUG();
- return 0;
-}
-
-static inline void arch_clear_pmem(void *addr, size_t size)
-{
- BUG();
-}
-
-static inline void arch_wb_cache_pmem(void *addr, size_t size)
-{
- BUG();
-}
-
-static inline void arch_invalidate_pmem(void *addr, size_t size)
-{
- BUG();
-}
-#endif
-
-static inline bool arch_has_pmem_api(void)
-{
- return IS_ENABLED(CONFIG_ARCH_HAS_PMEM_API);
-}
-
-/**
- * memcpy_to_pmem - copy data to persistent memory
- * @dst: destination buffer for the copy
- * @src: source buffer for the copy
- * @n: length of the copy in bytes
- *
- * Perform a memory copy that results in the destination of the copy
- * being effectively evicted from, or never written to, the processor
- * cache hierarchy after the copy completes. After memcpy_to_pmem()
- * data may still reside in cpu or platform buffers, so this operation
- * must be followed by a blkdev_issue_flush() on the pmem block device.
- */
-static inline void memcpy_to_pmem(void *dst, const void *src, size_t n)
-{
- if (arch_has_pmem_api())
- arch_memcpy_to_pmem(dst, src, n);
- else
- memcpy(dst, src, n);
-}
-
-/**
- * copy_from_iter_pmem - copy data from an iterator to PMEM
- * @addr: PMEM destination address
- * @bytes: number of bytes to copy
- * @i: iterator with source data
- *
- * Copy data from the iterator 'i' to the PMEM buffer starting at 'addr'.
- * See blkdev_issue_flush() note for memcpy_to_pmem().
- */
-static inline size_t copy_from_iter_pmem(void *addr, size_t bytes,
- struct iov_iter *i)
-{
- if (arch_has_pmem_api())
- return arch_copy_from_iter_pmem(addr, bytes, i);
- return copy_from_iter_nocache(addr, bytes, i);
-}
-
-/**
- * clear_pmem - zero a PMEM memory range
- * @addr: virtual start address
- * @size: number of bytes to zero
- *
- * Write zeros into the memory range starting at 'addr' for 'size' bytes.
- * See blkdev_issue_flush() note for memcpy_to_pmem().
- */
-static inline void clear_pmem(void *addr, size_t size)
-{
- if (arch_has_pmem_api())
- arch_clear_pmem(addr, size);
- else
- memset(addr, 0, size);
-}
-
-/**
- * invalidate_pmem - flush a pmem range from the cache hierarchy
- * @addr: virtual start address
- * @size: bytes to invalidate (internally aligned to cache line size)
- *
- * For platforms that support clearing poison this flushes any poisoned
- * ranges out of the cache
- */
-static inline void invalidate_pmem(void *addr, size_t size)
-{
- if (arch_has_pmem_api())
- arch_invalidate_pmem(addr, size);
-}
-
-/**
- * wb_cache_pmem - write back processor cache for PMEM memory range
- * @addr: virtual start address
- * @size: number of bytes to write back
- *
- * Write back the processor cache range starting at 'addr' for 'size' bytes.
- * See blkdev_issue_flush() note for memcpy_to_pmem().
- */
-static inline void wb_cache_pmem(void *addr, size_t size)
-{
- if (arch_has_pmem_api())
- arch_wb_cache_pmem(addr, size);
-}
-#endif /* __PMEM_H__ */