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Commit 6f85cebe authored by Markos Chandras's avatar Markos Chandras Committed by Ralf Baechle
Browse files

MIPS: lib: csum_partial: Add EVA support 



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

Signed-off-by: default avatarMarkos Chandras <markos.chandras@imgtec.com>
parent e89fb56c

arch/mips/lib/csum_partial.S

+25 −0
Original line number Diff line number Diff line
@@ -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