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Message-Id: <baa13cb4e4940a406ff31577b9b073410ba7d24f.1565726867.git.christophe.leroy@c-s.fr>
Date: Tue, 13 Aug 2019 20:11:35 +0000 (UTC)
From: Christophe Leroy <christophe.leroy@....fr>
To: Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
Michael Ellerman <mpe@...erman.id.au>, npiggin@...il.com
Cc: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH v1 03/10] powerpc/mm: move common 32/64 bits ioremap functions
into ioremap.c
ioremap(), __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
Allthough ioremap_wt() only exists on PPC32, move it into ioremap.c
as well. As it is the only one specific to PPC32, it is not worth
creating an ioremap_32.c file and leaving it in pgtable_32.c would
make it the only ioremap function in that file at the end of the
series.
Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
arch/powerpc/mm/Makefile | 2 +-
arch/powerpc/mm/ioremap.c | 52 ++++++++++++++++++++++++++++++++++++++++++++
arch/powerpc/mm/pgtable_32.c | 43 ------------------------------------
arch/powerpc/mm/pgtable_64.c | 39 ---------------------------------
4 files changed, 53 insertions(+), 83 deletions(-)
create mode 100644 arch/powerpc/mm/ioremap.c
diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile
index 0f499db315d6..29c682fe9144 100644
--- a/arch/powerpc/mm/Makefile
+++ b/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/
diff --git a/arch/powerpc/mm/ioremap.c b/arch/powerpc/mm/ioremap.c
new file mode 100644
index 000000000000..89479ee88344
--- /dev/null
+++ b/arch/powerpc/mm/ioremap.c
@@ -0,0 +1,52 @@
+// 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, unsigned long flags)
+{
+ return __ioremap_caller(addr, size, __pgprot(flags), __builtin_return_address(0));
+}
+EXPORT_SYMBOL(__ioremap);
+
+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);
+
+#ifdef CONFIG_PPC32
+void __iomem *ioremap_wt(phys_addr_t addr, unsigned long size)
+{
+ pgprot_t prot = pgprot_cached_wthru(PAGE_KERNEL);
+
+ return __ioremap_caller(addr, size, prot, __builtin_return_address(0));
+}
+EXPORT_SYMBOL(ioremap_wt);
+#endif
+
+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);
+}
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 35cb96cfc258..1999ec11706d 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -39,42 +39,6 @@ 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)
-{
- pgprot_t prot = pgprot_cached_wthru(PAGE_KERNEL);
-
- return __ioremap_caller(addr, size, prot, __builtin_return_address(0));
-}
-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)
{
pte_t pte = __pte(flags);
@@ -92,12 +56,6 @@ ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags)
EXPORT_SYMBOL(ioremap_prot);
void __iomem *
-__ioremap(phys_addr_t addr, unsigned long size, unsigned long flags)
-{
- return __ioremap_caller(addr, size, __pgprot(flags), __builtin_return_address(0));
-}
-
-void __iomem *
__ioremap_caller(phys_addr_t addr, unsigned long size, pgprot_t prot, void *caller)
{
unsigned long v, i;
@@ -171,7 +129,6 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, pgprot_t prot, void *call
out:
return (void __iomem *) (v + ((unsigned long)addr & ~PAGE_MASK));
}
-EXPORT_SYMBOL(__ioremap);
void iounmap(volatile void __iomem *addr)
{
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 194efc6f39fb..3ad921ac4862 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -204,42 +204,6 @@ void __iomem * __ioremap_caller(phys_addr_t addr, unsigned long size,
return ret;
}
-void __iomem * __ioremap(phys_addr_t addr, unsigned long size,
- unsigned long flags)
-{
- return __ioremap_caller(addr, size, __pgprot(flags), __builtin_return_address(0));
-}
-
-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)
{
@@ -289,10 +253,7 @@ void iounmap(volatile void __iomem *token)
__iounmap(token);
}
-EXPORT_SYMBOL(ioremap);
-EXPORT_SYMBOL(ioremap_wc);
EXPORT_SYMBOL(ioremap_prot);
-EXPORT_SYMBOL(__ioremap);
EXPORT_SYMBOL(__ioremap_at);
EXPORT_SYMBOL(iounmap);
EXPORT_SYMBOL(__iounmap);
--
2.13.3
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