powerpc/mm: move common 32/64 bits ioremap functions into ioremap.c

ioremap(), ioremap_wc() and ioremap_coherent() are now identical on
PPC32 and PPC64 as iowa_is_active() will always return false on
PPC32. Move them into a new common location called ioremap.c
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/6223803ce024d6ab4dfaa919f44098aed5b4bc33.1566309262.git.christophe.leroy@c-s.fr

arch/powerpc/mm/Makefile

@@ -7,7 +7,7 @@ ccflags-$(CONFIG_PPC64)	:= $(NO_MINIMAL_TOC)
 
 obj-y				:= fault.o mem.o pgtable.o mmap.o \
 				   init_$(BITS).o pgtable_$(BITS).o \
-				   pgtable-frag.o \
+				   pgtable-frag.o ioremap.o \
 				   init-common.o mmu_context.o drmem.o
 obj-$(CONFIG_PPC_MMU_NOHASH)	+= nohash/
 obj-$(CONFIG_PPC_BOOK3S_32)	+= book3s32/

arch/powerpc/mm/ioremap.c

+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/io.h>
+#include <asm/io-workarounds.h>
+
+void __iomem *ioremap(phys_addr_t addr, unsigned long size)
+{
+	pgprot_t prot = pgprot_noncached(PAGE_KERNEL);
+	void *caller = __builtin_return_address(0);
+
+	if (iowa_is_active())
+		return iowa_ioremap(addr, size, prot, caller);
+	return __ioremap_caller(addr, size, prot, caller);
+}
+EXPORT_SYMBOL(ioremap);
+
+void __iomem *ioremap_wc(phys_addr_t addr, unsigned long size)
+{
+	pgprot_t prot = pgprot_noncached_wc(PAGE_KERNEL);
+	void *caller = __builtin_return_address(0);
+
+	if (iowa_is_active())
+		return iowa_ioremap(addr, size, prot, caller);
+	return __ioremap_caller(addr, size, prot, caller);
+}
+EXPORT_SYMBOL(ioremap_wc);
+
+void __iomem *ioremap_coherent(phys_addr_t addr, unsigned long size)
+{
+	pgprot_t prot = pgprot_cached(PAGE_KERNEL);
+	void *caller = __builtin_return_address(0);
+
+	if (iowa_is_active())
+		return iowa_ioremap(addr, size, prot, caller);
+	return __ioremap_caller(addr, size, prot, caller);
+}

arch/powerpc/mm/pgtable_32.c

@@ -38,24 +38,6 @@ EXPORT_SYMBOL(ioremap_bot);	/* aka VMALLOC_END */
 
 extern char etext[], _stext[], _sinittext[], _einittext[];
 
-void __iomem *
-ioremap(phys_addr_t addr, unsigned long size)
-{
-	pgprot_t prot = pgprot_noncached(PAGE_KERNEL);
-
-	return __ioremap_caller(addr, size, prot, __builtin_return_address(0));
-}
-EXPORT_SYMBOL(ioremap);
-
-void __iomem *
-ioremap_wc(phys_addr_t addr, unsigned long size)
-{
-	pgprot_t prot = pgprot_noncached_wc(PAGE_KERNEL);
-
-	return __ioremap_caller(addr, size, prot, __builtin_return_address(0));
-}
-EXPORT_SYMBOL(ioremap_wc);
-
 void __iomem *
 ioremap_wt(phys_addr_t addr, unsigned long size)
 {
@@ -65,15 +47,6 @@ ioremap_wt(phys_addr_t addr, unsigned long size)
 }
 EXPORT_SYMBOL(ioremap_wt);
 
-void __iomem *
-ioremap_coherent(phys_addr_t addr, unsigned long size)
-{
-	pgprot_t prot = pgprot_cached(PAGE_KERNEL);
-
-	return __ioremap_caller(addr, size, prot, __builtin_return_address(0));
-}
-EXPORT_SYMBOL(ioremap_coherent);
-
 void __iomem *
 ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags)
 {

arch/powerpc/mm/pgtable_64.c

@@ -35,7 +35,6 @@
 #include <asm/page.h>
 #include <asm/prom.h>
 #include <asm/io.h>
-#include <asm/io-workarounds.h>
 #include <asm/mmu_context.h>
 #include <asm/pgtable.h>
 #include <asm/mmu.h>
@@ -204,36 +203,6 @@ void __iomem * __ioremap_caller(phys_addr_t addr, unsigned long size,
 	return ret;
 }
 
-void __iomem * ioremap(phys_addr_t addr, unsigned long size)
-{
-	pgprot_t prot = pgprot_noncached(PAGE_KERNEL);
-	void *caller = __builtin_return_address(0);
-
-	if (iowa_is_active())
-		return iowa_ioremap(addr, size, prot, caller);
-	return __ioremap_caller(addr, size, prot, caller);
-}
-
-void __iomem * ioremap_wc(phys_addr_t addr, unsigned long size)
-{
-	pgprot_t prot = pgprot_noncached_wc(PAGE_KERNEL);
-	void *caller = __builtin_return_address(0);
-
-	if (iowa_is_active())
-		return iowa_ioremap(addr, size, prot, caller);
-	return __ioremap_caller(addr, size, prot, caller);
-}
-
-void __iomem *ioremap_coherent(phys_addr_t addr, unsigned long size)
-{
-	pgprot_t prot = pgprot_cached(PAGE_KERNEL);
-	void *caller = __builtin_return_address(0);
-
-	if (iowa_is_active())
-		return iowa_ioremap(addr, size, prot, caller);
-	return __ioremap_caller(addr, size, prot, caller);
-}
-
 void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size,
 			     unsigned long flags)
 {
@@ -278,8 +247,6 @@ void iounmap(volatile void __iomem *token)
 	vunmap(addr);
 }
 
-EXPORT_SYMBOL(ioremap);
-EXPORT_SYMBOL(ioremap_wc);
 EXPORT_SYMBOL(ioremap_prot);
 EXPORT_SYMBOL(__ioremap_at);
 EXPORT_SYMBOL(iounmap);