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-rw-r--r--arch/ia64/include/asm/io.h17
-rw-r--r--arch/ia64/include/asm/mmiowb.h25
-rw-r--r--arch/ia64/include/asm/spinlock.h2
3 files changed, 27 insertions, 17 deletions
diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
index 1e6fef69bb01..a511d62d447a 100644
--- a/arch/ia64/include/asm/io.h
+++ b/arch/ia64/include/asm/io.h
@@ -113,20 +113,6 @@ extern int valid_mmap_phys_addr_range (unsigned long pfn, size_t count);
*/
#define __ia64_mf_a() ia64_mfa()
-/**
- * ___ia64_mmiowb - I/O write barrier
- *
- * Ensure ordering of I/O space writes. This will make sure that writes
- * following the barrier will arrive after all previous writes. For most
- * ia64 platforms, this is a simple 'mf.a' instruction.
- *
- * See Documentation/driver-api/device-io.rst for more information.
- */
-static inline void ___ia64_mmiowb(void)
-{
- ia64_mfa();
-}
-
static inline void*
__ia64_mk_io_addr (unsigned long port)
{
@@ -161,7 +147,6 @@ __ia64_mk_io_addr (unsigned long port)
#define __ia64_writew ___ia64_writew
#define __ia64_writel ___ia64_writel
#define __ia64_writeq ___ia64_writeq
-#define __ia64_mmiowb ___ia64_mmiowb
/*
* For the in/out routines, we need to do "mf.a" _after_ doing the I/O access to ensure
@@ -296,7 +281,6 @@ __outsl (unsigned long port, const void *src, unsigned long count)
#define __outb platform_outb
#define __outw platform_outw
#define __outl platform_outl
-#define __mmiowb platform_mmiowb
#define inb(p) __inb(p)
#define inw(p) __inw(p)
@@ -310,7 +294,6 @@ __outsl (unsigned long port, const void *src, unsigned long count)
#define outsb(p,s,c) __outsb(p,s,c)
#define outsw(p,s,c) __outsw(p,s,c)
#define outsl(p,s,c) __outsl(p,s,c)
-#define mmiowb() __mmiowb()
/*
* The address passed to these functions are ioremap()ped already.
diff --git a/arch/ia64/include/asm/mmiowb.h b/arch/ia64/include/asm/mmiowb.h
new file mode 100644
index 000000000000..297b85ac84a0
--- /dev/null
+++ b/arch/ia64/include/asm/mmiowb.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _ASM_IA64_MMIOWB_H
+#define _ASM_IA64_MMIOWB_H
+
+#include <asm/machvec.h>
+
+/**
+ * ___ia64_mmiowb - I/O write barrier
+ *
+ * Ensure ordering of I/O space writes. This will make sure that writes
+ * following the barrier will arrive after all previous writes. For most
+ * ia64 platforms, this is a simple 'mf.a' instruction.
+ */
+static inline void ___ia64_mmiowb(void)
+{
+ ia64_mfa();
+}
+
+#define __ia64_mmiowb ___ia64_mmiowb
+#define mmiowb() platform_mmiowb()
+
+#include <asm-generic/mmiowb.h>
+
+#endif /* _ASM_IA64_MMIOWB_H */
diff --git a/arch/ia64/include/asm/spinlock.h b/arch/ia64/include/asm/spinlock.h
index afd0b3121b4c..5f620e66384e 100644
--- a/arch/ia64/include/asm/spinlock.h
+++ b/arch/ia64/include/asm/spinlock.h
@@ -73,6 +73,8 @@ static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock)
{
unsigned short *p = (unsigned short *)&lock->lock + 1, tmp;
+ /* This could be optimised with ARCH_HAS_MMIOWB */
+ mmiowb();
asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p));
WRITE_ONCE(*p, (tmp + 2) & ~1);
}