summaryrefslogtreecommitdiff
path: root/include/linux/soc/marvell/octeontx2/asm.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/soc/marvell/octeontx2/asm.h')
-rw-r--r--include/linux/soc/marvell/octeontx2/asm.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/soc/marvell/octeontx2/asm.h b/include/linux/soc/marvell/octeontx2/asm.h
index fa1d6af0164e..d683251a0b40 100644
--- a/include/linux/soc/marvell/octeontx2/asm.h
+++ b/include/linux/soc/marvell/octeontx2/asm.h
@@ -5,6 +5,7 @@
#ifndef __SOC_OTX2_ASM_H
#define __SOC_OTX2_ASM_H
+#include <linux/types.h>
#if defined(CONFIG_ARM64)
/*
* otx2_lmt_flush is used for LMT store operation.
@@ -34,9 +35,23 @@
: [rf] "+r"(val) \
: [rs] "r"(addr)); \
})
+
+static inline u64 otx2_atomic64_fetch_add(u64 incr, u64 *ptr)
+{
+ u64 result;
+
+ asm volatile (".cpu generic+lse\n"
+ "ldadda %x[i], %x[r], [%[b]]"
+ : [r] "=r" (result), "+m" (*ptr)
+ : [i] "r" (incr), [b] "r" (ptr)
+ : "memory");
+ return result;
+}
+
#else
#define otx2_lmt_flush(ioaddr) ({ 0; })
#define cn10k_lmt_flush(val, addr) ({ addr = val; })
+#define otx2_atomic64_fetch_add(incr, ptr) ({ incr; })
#endif
#endif /* __SOC_OTX2_ASM_H */