mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-17 09:14:19 +08:00
63d2dfdbf4
Having them be different seems an obscure configuration. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
|
|
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef __ARC_ASM_CACHE_H
|
|
#define __ARC_ASM_CACHE_H
|
|
|
|
/* In case $$ not config, setup a dummy number for rest of kernel */
|
|
#ifndef CONFIG_ARC_CACHE_LINE_SHIFT
|
|
#define L1_CACHE_SHIFT 6
|
|
#else
|
|
#define L1_CACHE_SHIFT CONFIG_ARC_CACHE_LINE_SHIFT
|
|
#endif
|
|
|
|
#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
|
|
#define CACHE_LINE_MASK (~(L1_CACHE_BYTES - 1))
|
|
|
|
/*
|
|
* ARC700 doesn't cache any access in top 256M.
|
|
* Ideal for wiring memory mapped peripherals as we don't need to do
|
|
* explicit uncached accesses (LD.di/ST.di) hence more portable drivers
|
|
*/
|
|
#define ARC_UNCACHED_ADDR_SPACE 0xc0000000
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/* Uncached access macros */
|
|
#define arc_read_uncached_32(ptr) \
|
|
({ \
|
|
unsigned int __ret; \
|
|
__asm__ __volatile__( \
|
|
" ld.di %0, [%1] \n" \
|
|
: "=r"(__ret) \
|
|
: "r"(ptr)); \
|
|
__ret; \
|
|
})
|
|
|
|
#define arc_write_uncached_32(ptr, data)\
|
|
({ \
|
|
__asm__ __volatile__( \
|
|
" st.di %0, [%1] \n" \
|
|
: \
|
|
: "r"(data), "r"(ptr)); \
|
|
})
|
|
|
|
#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
|
|
|
|
extern void arc_cache_init(void);
|
|
extern char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len);
|
|
extern void read_decode_cache_bcr(void);
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_CACHE_H */
|