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-rw-r--r--include/asm-generic/io.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 7ef015eb3403..b4531e3b2120 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -915,6 +915,9 @@ extern void ioport_unmap(void __iomem *p);
#endif /* CONFIG_GENERIC_IOMAP */
#endif /* CONFIG_HAS_IOPORT_MAP */
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
#ifndef xlate_dev_kmem_ptr
#define xlate_dev_kmem_ptr xlate_dev_kmem_ptr
static inline void *xlate_dev_kmem_ptr(void *addr)
@@ -954,6 +957,14 @@ static inline void *bus_to_virt(unsigned long address)
#ifndef memset_io
#define memset_io memset_io
+/**
+ * memset_io Set a range of I/O memory to a constant value
+ * @addr: The beginning of the I/O-memory range to set
+ * @val: The value to set the memory to
+ * @count: The number of bytes to set
+ *
+ * Set a range of I/O memory to a given value.
+ */
static inline void memset_io(volatile void __iomem *addr, int value,
size_t size)
{
@@ -963,6 +974,14 @@ static inline void memset_io(volatile void __iomem *addr, int value,
#ifndef memcpy_fromio
#define memcpy_fromio memcpy_fromio
+/**
+ * memcpy_fromio Copy a block of data from I/O memory
+ * @dst: The (RAM) destination for the copy
+ * @src: The (I/O memory) source for the data
+ * @count: The number of bytes to copy
+ *
+ * Copy a block of data from I/O memory.
+ */
static inline void memcpy_fromio(void *buffer,
const volatile void __iomem *addr,
size_t size)
@@ -973,6 +992,14 @@ static inline void memcpy_fromio(void *buffer,
#ifndef memcpy_toio
#define memcpy_toio memcpy_toio
+/**
+ * memcpy_toio Copy a block of data into I/O memory
+ * @dst: The (I/O memory) destination for the copy
+ * @src: The (RAM) source for the data
+ * @count: The number of bytes to copy
+ *
+ * Copy a block of data to I/O memory.
+ */
static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer,
size_t size)
{