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MIPS: lib: csum_partial: Add EVA support 

Use EVA specific functions to read and write data to
user address space.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
This commit is contained in:
Markos Chandras 2014-01-17 11:36:16 +00:00 committed by Ralf Baechle
parent e89fb56c8b
commit 6f85cebe49
1 changed files with 25 additions and 0 deletions
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25
arch/mips/lib/csum_partial.S
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@ -352,6 +352,19 @@ LEAF(csum_partial)
.section __ex_table,"a"; \
PTR 9b, handler; \
.previous; \
/* This is enabled in EVA mode */ \
.else; \
/* If loading from user or storing to user */ \
.if ((\from == USEROP) && (type == LD_INSN)) || \
((\to == USEROP) && (type == ST_INSN)); \
9: __BUILD_EVA_INSN(insn##e, reg, addr); \
.section __ex_table,"a"; \
PTR 9b, handler; \
.previous; \
.else; \
/* EVA without exception */ \
insn reg, addr; \
.endif; \
.endif
#undef LOAD
@ -795,7 +808,19 @@ LEAF(csum_partial)
.endm
LEAF(__csum_partial_copy_kernel)
#ifndef CONFIG_EVA
FEXPORT(__csum_partial_copy_to_user)
FEXPORT(__csum_partial_copy_from_user)
#endif
__BUILD_CSUM_PARTIAL_COPY_USER LEGACY_MODE USEROP USEROP 1
END(__csum_partial_copy_kernel)
#ifdef CONFIG_EVA
LEAF(__csum_partial_copy_to_user)
__BUILD_CSUM_PARTIAL_COPY_USER EVA_MODE KERNELOP USEROP 0
END(__csum_partial_copy_to_user)
LEAF(__csum_partial_copy_from_user)
__BUILD_CSUM_PARTIAL_COPY_USER EVA_MODE USEROP KERNELOP 0
END(__csum_partial_copy_from_user)
#endif