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-rw-r--r--arch/blackfin/include/asm/uaccess.h234
1 files changed, 0 insertions, 234 deletions
diff --git a/arch/blackfin/include/asm/uaccess.h b/arch/blackfin/include/asm/uaccess.h
deleted file mode 100644
index 45da4bcb050e..000000000000
--- a/arch/blackfin/include/asm/uaccess.h
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * Copyright 2004-2009 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- *
- * Based on: include/asm-m68knommu/uaccess.h
- */
-
-#ifndef __BLACKFIN_UACCESS_H
-#define __BLACKFIN_UACCESS_H
-
-/*
- * User space memory access functions
- */
-#include <linux/mm.h>
-#include <linux/string.h>
-
-#include <asm/segment.h>
-#include <asm/sections.h>
-
-#define get_ds() (KERNEL_DS)
-#define get_fs() (current_thread_info()->addr_limit)
-
-static inline void set_fs(mm_segment_t fs)
-{
- current_thread_info()->addr_limit = fs;
-}
-
-#define segment_eq(a, b) ((a) == (b))
-
-#define access_ok(type, addr, size) _access_ok((unsigned long)(addr), (size))
-
-/*
- * The fs value determines whether argument validity checking should be
- * performed or not. If get_fs() == USER_DS, checking is performed, with
- * get_fs() == KERNEL_DS, checking is bypassed.
- */
-
-#ifndef CONFIG_ACCESS_CHECK
-static inline int _access_ok(unsigned long addr, unsigned long size) { return 1; }
-#else
-extern int _access_ok(unsigned long addr, unsigned long size);
-#endif
-
-#include <asm/extable.h>
-
-/*
- * These are the main single-value transfer routines. They automatically
- * use the right size if we just have the right pointer type.
- */
-
-#define put_user(x, p) \
- ({ \
- int _err = 0; \
- typeof(*(p)) _x = (x); \
- typeof(*(p)) __user *_p = (p); \
- if (!access_ok(VERIFY_WRITE, _p, sizeof(*(_p)))) {\
- _err = -EFAULT; \
- } \
- else { \
- switch (sizeof (*(_p))) { \
- case 1: \
- __put_user_asm(_x, _p, B); \
- break; \
- case 2: \
- __put_user_asm(_x, _p, W); \
- break; \
- case 4: \
- __put_user_asm(_x, _p, ); \
- break; \
- case 8: { \
- long _xl, _xh; \
- _xl = ((__force long *)&_x)[0]; \
- _xh = ((__force long *)&_x)[1]; \
- __put_user_asm(_xl, ((__force long __user *)_p)+0, );\
- __put_user_asm(_xh, ((__force long __user *)_p)+1, );\
- } break; \
- default: \
- _err = __put_user_bad(); \
- break; \
- } \
- } \
- _err; \
- })
-
-#define __put_user(x, p) put_user(x, p)
-static inline int bad_user_access_length(void)
-{
- panic("bad_user_access_length");
- return -1;
-}
-
-#define __put_user_bad() (printk(KERN_INFO "put_user_bad %s:%d %s\n",\
- __FILE__, __LINE__, __func__),\
- bad_user_access_length(), (-EFAULT))
-
-/*
- * Tell gcc we read from memory instead of writing: this is because
- * we do not write to any memory gcc knows about, so there are no
- * aliasing issues.
- */
-
-#define __ptr(x) ((unsigned long __force *)(x))
-
-#define __put_user_asm(x, p, bhw) \
- __asm__ (#bhw"[%1] = %0;\n\t" \
- : /* no outputs */ \
- :"d" (x), "a" (__ptr(p)) : "memory")
-
-#define get_user(x, ptr) \
-({ \
- int _err = 0; \
- unsigned long _val = 0; \
- const typeof(*(ptr)) __user *_p = (ptr); \
- const size_t ptr_size = sizeof(*(_p)); \
- if (likely(access_ok(VERIFY_READ, _p, ptr_size))) { \
- BUILD_BUG_ON(ptr_size >= 8); \
- switch (ptr_size) { \
- case 1: \
- __get_user_asm(_val, _p, B, (Z)); \
- break; \
- case 2: \
- __get_user_asm(_val, _p, W, (Z)); \
- break; \
- case 4: \
- __get_user_asm(_val, _p, , ); \
- break; \
- } \
- } else \
- _err = -EFAULT; \
- x = (__force typeof(*(ptr)))_val; \
- _err; \
-})
-
-#define __get_user(x, p) get_user(x, p)
-
-#define __get_user_bad() (bad_user_access_length(), (-EFAULT))
-
-#define __get_user_asm(x, ptr, bhw, option) \
-({ \
- __asm__ __volatile__ ( \
- "%0 =" #bhw "[%1]" #option ";" \
- : "=d" (x) \
- : "a" (__ptr(ptr))); \
-})
-
-static inline unsigned long __must_check
-raw_copy_from_user(void *to, const void __user *from, unsigned long n)
-{
- memcpy(to, (const void __force *)from, n);
- return 0;
-}
-
-static inline unsigned long __must_check
-raw_copy_to_user(void __user *to, const void *from, unsigned long n)
-{
- memcpy((void __force *)to, from, n);
- SSYNC();
- return 0;
-}
-
-#define INLINE_COPY_FROM_USER
-#define INLINE_COPY_TO_USER
-/*
- * Copy a null terminated string from userspace.
- */
-
-static inline long __must_check
-strncpy_from_user(char *dst, const char __user *src, long count)
-{
- char *tmp;
- if (!access_ok(VERIFY_READ, src, 1))
- return -EFAULT;
- strncpy(dst, (const char __force *)src, count);
- for (tmp = dst; *tmp && count > 0; tmp++, count--) ;
- return (tmp - dst);
-}
-
-/*
- * Get the size of a string in user space.
- * src: The string to measure
- * n: The maximum valid length
- *
- * Get the size of a NUL-terminated string in user space.
- *
- * Returns the size of the string INCLUDING the terminating NUL.
- * On exception, returns 0.
- * If the string is too long, returns a value greater than n.
- */
-static inline long __must_check strnlen_user(const char __user *src, long n)
-{
- if (!access_ok(VERIFY_READ, src, 1))
- return 0;
- return strnlen((const char __force *)src, n) + 1;
-}
-
-/*
- * Zero Userspace
- */
-
-static inline unsigned long __must_check
-__clear_user(void __user *to, unsigned long n)
-{
- if (!access_ok(VERIFY_WRITE, to, n))
- return n;
- memset((void __force *)to, 0, n);
- return 0;
-}
-
-#define clear_user(to, n) __clear_user(to, n)
-
-/* How to interpret these return values:
- * CORE: can be accessed by core load or dma memcpy
- * CORE_ONLY: can only be accessed by core load
- * DMA: can only be accessed by dma memcpy
- * IDMA: can only be accessed by interprocessor dma memcpy (BF561)
- * ITEST: can be accessed by isram memcpy or dma memcpy
- */
-enum {
- BFIN_MEM_ACCESS_CORE = 0,
- BFIN_MEM_ACCESS_CORE_ONLY,
- BFIN_MEM_ACCESS_DMA,
- BFIN_MEM_ACCESS_IDMA,
- BFIN_MEM_ACCESS_ITEST,
-};
-/**
- * bfin_mem_access_type() - what kind of memory access is required
- * @addr: the address to check
- * @size: number of bytes needed
- * @return: <0 is error, >=0 is BFIN_MEM_ACCESS_xxx enum (see above)
- */
-int bfin_mem_access_type(unsigned long addr, unsigned long size);
-
-#endif /* _BLACKFIN_UACCESS_H */
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