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>

1 files changed, 25 insertions, 0 deletions

diff --git a/arch/mips/lib/csum_partial.S b/arch/mips/lib/csum_partial.S
index 62c8768a59ce..2e4825e48388 100644
--- a/arch/mips/lib/csum_partial.S
+++ b/arch/mips/lib/csum_partial.S
@@ -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