From 602997d492f2338b337a25d9b738d2bb3053f6ce Mon Sep 17 00:00:00 2001
From: doupengda <doupengda@loongson.cn>
Date: Wed, 5 Jul 2023 02:30:53 +0000
Subject: [PATCH] Add support for loongarch64

---
 arch/arch-loongarch64.h | 10 ++++++++++
 arch/arch.h             |  3 +++
 configure               |  3 +++
 libfio.c                |  3 ++-
 os/os-linux-syscall.h   |  7 +++++++
 5 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 arch/arch-loongarch64.h

diff --git a/arch/arch-loongarch64.h b/arch/arch-loongarch64.h
new file mode 100644
index 0000000..43ea83b
--- /dev/null
+++ b/arch/arch-loongarch64.h
@@ -0,0 +1,10 @@
+#ifndef ARCH_LOONGARCH64_H
+#define ARCH_LOONGARCH64_H
+
+#define FIO_ARCH	(arch_loongarch64)
+
+#define read_barrier()		__asm__ __volatile__("dbar 0": : :"memory")
+#define write_barrier()		__asm__ __volatile__("dbar 0": : :"memory")
+#define nop			__asm__ __volatile__("dbar 0": : :"memory")
+
+#endif
diff --git a/arch/arch.h b/arch/arch.h
index fca003b..2c11c0f 100644
--- a/arch/arch.h
+++ b/arch/arch.h
@@ -27,6 +27,7 @@ enum {
 	arch_generic,
 
 	arch_nr,
+	arch_loongarch64,
 };
 
 enum {
@@ -97,6 +98,8 @@ extern unsigned long arch_flags;
 #include "arch-hppa.h"
 #elif defined(__aarch64__)
 #include "arch-aarch64.h"
+#elif defined(__loongarch64)
+#include "arch-loongarch64.h"
 #else
 #warning "Unknown architecture, attempting to use generic model."
 #include "arch-generic.h"
diff --git a/configure b/configure
index 45d10a3..46d6d9a 100755
--- a/configure
+++ b/configure
@@ -523,6 +523,9 @@ case "$cpu" in
   mips*)
     cpu="mips"
   ;;
+  loongarch64)
+    cpu="loongarch64"
+  ;;
   sparc|sun4[cdmuv])
     cpu="sparc"
   ;;
diff --git a/libfio.c b/libfio.c
index a52014c..d2227f4 100644
--- a/libfio.c
+++ b/libfio.c
@@ -74,7 +74,8 @@ static const char *fio_arch_strings[arch_nr] = {
 	"hppa",
 	"mips",
 	"aarch64",
-	"generic"
+	"generic",
+	"loongarch64"
 };
 
 static void reset_io_counters(struct thread_data *td, int all)
diff --git a/os/os-linux-syscall.h b/os/os-linux-syscall.h
index c399b2f..3524966 100644
--- a/os/os-linux-syscall.h
+++ b/os/os-linux-syscall.h
@@ -270,6 +270,13 @@
 #define __NR_ioprio_get		31
 #endif
 
+/* Linux syscalls for loongarch64 */
+#elif defined(ARCH_LOONGARCH64_H)
+#ifndef __NR_ioprio_set
+#define __NR_ioprio_set         30
+#define __NR_ioprio_get         31
+#endif
+
 #else
 #warning "Unknown architecture"
 #endif
-- 
2.33.0