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authorJay Estabrook <jay.estabrook@hp.com>2007-06-01 00:47:04 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-06-01 08:18:29 -0700
commit5ae0b6c704877d0c6b95dd7c3b1907770ca28b79 (patch)
tree0d11567e33f883d241697d358dd12010d5917133
parent025a22151c41890e5d30a1d4fb84c547b84d7671 (diff)
downloadlinux-5ae0b6c704877d0c6b95dd7c3b1907770ca28b79.tar.bz2
ALPHA: correct low-level I/O routines for sable-lynx
This code corrects the behavior of the t2_readX/t2_writeX routines, and t2_ioreadNN/t2_iowriteNN routines. The value T2_DENSE_MEM is now subtracted from the "xaddr" argument in each of the readX/writeX routines, since those routines may be called directly, rather than always through the ioreadNN/iowriteNN routines. Examples of the direct calls, via the __raw_readX/writeX macros, are the memcpy_fromio/toio, _memset_c_io, and scr_memcpyw routines. Signed-off-by: Jay Estabrook <jay.estabrook@hp.com> Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/asm-alpha/core_t2.h26
1 files changed, 16 insertions, 10 deletions
diff --git a/include/asm-alpha/core_t2.h b/include/asm-alpha/core_t2.h
index 457c34b6eb09..90e6b5d6c214 100644
--- a/include/asm-alpha/core_t2.h
+++ b/include/asm-alpha/core_t2.h
@@ -437,9 +437,15 @@ static inline void t2_outl(u32 b, unsigned long addr)
static DEFINE_SPINLOCK(t2_hae_lock);
+/*
+ * NOTE: take T2_DENSE_MEM off in each readX/writeX routine, since
+ * they may be called directly, rather than through the
+ * ioreadNN/iowriteNN routines.
+ */
+
__EXTERN_INLINE u8 t2_readb(const volatile void __iomem *xaddr)
{
- unsigned long addr = (unsigned long) xaddr;
+ unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
unsigned long result, msb;
unsigned long flags;
spin_lock_irqsave(&t2_hae_lock, flags);
@@ -453,7 +459,7 @@ __EXTERN_INLINE u8 t2_readb(const volatile void __iomem *xaddr)
__EXTERN_INLINE u16 t2_readw(const volatile void __iomem *xaddr)
{
- unsigned long addr = (unsigned long) xaddr;
+ unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
unsigned long result, msb;
unsigned long flags;
spin_lock_irqsave(&t2_hae_lock, flags);
@@ -471,7 +477,7 @@ __EXTERN_INLINE u16 t2_readw(const volatile void __iomem *xaddr)
*/
__EXTERN_INLINE u32 t2_readl(const volatile void __iomem *xaddr)
{
- unsigned long addr = (unsigned long) xaddr;
+ unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
unsigned long result, msb;
unsigned long flags;
spin_lock_irqsave(&t2_hae_lock, flags);
@@ -485,7 +491,7 @@ __EXTERN_INLINE u32 t2_readl(const volatile void __iomem *xaddr)
__EXTERN_INLINE u64 t2_readq(const volatile void __iomem *xaddr)
{
- unsigned long addr = (unsigned long) xaddr;
+ unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
unsigned long r0, r1, work, msb;
unsigned long flags;
spin_lock_irqsave(&t2_hae_lock, flags);
@@ -501,7 +507,7 @@ __EXTERN_INLINE u64 t2_readq(const volatile void __iomem *xaddr)
__EXTERN_INLINE void t2_writeb(u8 b, volatile void __iomem *xaddr)
{
- unsigned long addr = (unsigned long) xaddr;
+ unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
unsigned long msb, w;
unsigned long flags;
spin_lock_irqsave(&t2_hae_lock, flags);
@@ -515,7 +521,7 @@ __EXTERN_INLINE void t2_writeb(u8 b, volatile void __iomem *xaddr)
__EXTERN_INLINE void t2_writew(u16 b, volatile void __iomem *xaddr)
{
- unsigned long addr = (unsigned long) xaddr;
+ unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
unsigned long msb, w;
unsigned long flags;
spin_lock_irqsave(&t2_hae_lock, flags);
@@ -533,7 +539,7 @@ __EXTERN_INLINE void t2_writew(u16 b, volatile void __iomem *xaddr)
*/
__EXTERN_INLINE void t2_writel(u32 b, volatile void __iomem *xaddr)
{
- unsigned long addr = (unsigned long) xaddr;
+ unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
unsigned long msb;
unsigned long flags;
spin_lock_irqsave(&t2_hae_lock, flags);
@@ -546,7 +552,7 @@ __EXTERN_INLINE void t2_writel(u32 b, volatile void __iomem *xaddr)
__EXTERN_INLINE void t2_writeq(u64 b, volatile void __iomem *xaddr)
{
- unsigned long addr = (unsigned long) xaddr;
+ unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
unsigned long msb, work;
unsigned long flags;
spin_lock_irqsave(&t2_hae_lock, flags);
@@ -587,14 +593,14 @@ __EXTERN_INLINE int t2_is_mmio(const volatile void __iomem *addr)
__EXTERN_INLINE unsigned int t2_ioread##NS(void __iomem *xaddr) \
{ \
if (t2_is_mmio(xaddr)) \
- return t2_read##OS(xaddr - T2_DENSE_MEM); \
+ return t2_read##OS(xaddr); \
else \
return t2_in##OS((unsigned long)xaddr - T2_IO); \
} \
__EXTERN_INLINE void t2_iowrite##NS(u##NS b, void __iomem *xaddr) \
{ \
if (t2_is_mmio(xaddr)) \
- t2_write##OS(b, xaddr - T2_DENSE_MEM); \
+ t2_write##OS(b, xaddr); \
else \
t2_out##OS(b, (unsigned long)xaddr - T2_IO); \
}