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[PATCH 1/1] MIPS: Disable address swizzling on __raw MMIO operations

To: ralf@linux-mips.org
Subject: [PATCH 1/1] MIPS: Disable address swizzling on __raw MMIO operations
From: Kevin Cernekee <cernekee@gmail.com>
Date: Tue, 26 May 2009 16:59:56 -0700
Cc: linux-mips@linux-mips.org, linux-kernel@vger.kernel.org
In-reply-to: <26a78e954b7e1570179fba0c56aa129af1a247e0@localhost>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <26a78e954b7e1570179fba0c56aa129af1a247e0@localhost>
Sender: linux-mips-bounce@linux-mips.org
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
---
 arch/mips/include/asm/io.h |   22 +++++++++++++---------
 1 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 436878e..ea0647c 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -301,7 +301,7 @@ static inline void iounmap(const volatile void __iomem 
*addr)
 #define war_octeon_io_reorder_wmb()            do { } while (0)
 #endif
 
-#define __BUILD_MEMORY_SINGLE(pfx, bwlq, type, irq)                    \
+#define __BUILD_MEMORY_SINGLE(pfx, bwlq, type, irq, swiz)              \
                                                                        \
 static inline void pfx##write##bwlq(type val,                          \
                                    volatile void __iomem *mem)         \
@@ -311,7 +311,9 @@ static inline void pfx##write##bwlq(type val,               
                \
                                                                        \
        war_octeon_io_reorder_wmb();                                    \
                                                                        \
-       __mem = (void *)__swizzle_addr_##bwlq((unsigned long)(mem));    \
+       __mem = swiz ?                                                  \
+               (void *)__swizzle_addr_##bwlq((unsigned long)(mem)) :   \
+               (void *)mem;                                            \
                                                                        \
        __val = pfx##ioswab##bwlq(__mem, val);                          \
                                                                        \
@@ -344,7 +346,9 @@ static inline type pfx##read##bwlq(const volatile void 
__iomem *mem)        \
        volatile type *__mem;                                           \
        type __val;                                                     \
                                                                        \
-       __mem = (void *)__swizzle_addr_##bwlq((unsigned long)(mem));    \
+       __mem = swiz ?                                                  \
+               (void *)__swizzle_addr_##bwlq((unsigned long)(mem)) :   \
+               (void *)mem;                                            \
                                                                        \
        if (sizeof(type) != sizeof(u64) || sizeof(u64) == sizeof(long)) \
                __val = *__mem;                                         \
@@ -406,15 +410,15 @@ static inline type pfx##in##bwlq##p(unsigned long port)   
                \
        return pfx##ioswab##bwlq(__addr, __val);                        \
 }
 
-#define __BUILD_MEMORY_PFX(bus, bwlq, type)                            \
+#define __BUILD_MEMORY_PFX(bus, bwlq, type, swiz)                      \
                                                                        \
-__BUILD_MEMORY_SINGLE(bus, bwlq, type, 1)
+__BUILD_MEMORY_SINGLE(bus, bwlq, type, 1, swiz)
 
 #define BUILDIO_MEM(bwlq, type)                                                
\
                                                                        \
-__BUILD_MEMORY_PFX(__raw_, bwlq, type)                                 \
-__BUILD_MEMORY_PFX(, bwlq, type)                                       \
-__BUILD_MEMORY_PFX(__mem_, bwlq, type)                                 \
+__BUILD_MEMORY_PFX(__raw_, bwlq, type, 0)                              \
+__BUILD_MEMORY_PFX(, bwlq, type, 1)                                    \
+__BUILD_MEMORY_PFX(__mem_, bwlq, type, 1)                              \
 
 BUILDIO_MEM(b, u8)
 BUILDIO_MEM(w, u16)
@@ -438,7 +442,7 @@ BUILDIO_IOPORT(q, u64)
 
 #define __BUILDIO(bwlq, type)                                          \
                                                                        \
-__BUILD_MEMORY_SINGLE(____raw_, bwlq, type, 0)
+__BUILD_MEMORY_SINGLE(____raw_, bwlq, type, 0, 0)
 
 __BUILDIO(q, u64)
 
-- 
1.5.3.6


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