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MIPS: asm: Add prefetch instruction for EVA

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EVA can use the PREFE instruction to perform the virtual address
translation using the user mapping of the address rather than the
kernel mapping.

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
This commit is contained in:
Leonid Yegoshin 2013-12-03 10:48:15 +00:00 committed by Ralf Baechle
parent a6e18781c5
commit 5b736cd243
1 changed files with 8 additions and 0 deletions
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8
arch/mips/include/asm/asm.h
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@ -149,6 +149,13 @@ symbol = value
pref hint, addr; \
.set pop
#define PREFE(hint, addr) \
.set push; \
.set mips0; \
.set eva; \
prefe hint, addr; \
.set pop
#define PREFX(hint,addr) \
.set push; \
.set mips4; \
@ -158,6 +165,7 @@ symbol = value
#else /* !CONFIG_CPU_HAS_PREFETCH */
#define PREF(hint, addr)
#define PREFE(hint, addr)
#define PREFX(hint, addr)
#endif /* !CONFIG_CPU_HAS_PREFETCH */