[PATCH] alpha: Remove IO memcpy and memset

[Julian Vetter]

Recently a new IO memcpy and memset was added in libs/iomem_copy.c. So,
remove the alpha specific implementations and use the one from the lib.

Signed-off-by: Julian Vetter <julian@xxxxxxxxxxxxxxxx>
---
 arch/alpha/include/asm/io.h  |  22 -----
 arch/alpha/include/asm/vga.h |   2 +-
 arch/alpha/kernel/io.c       | 171 -----------------------------------
 3 files changed, 1 insertion(+), 194 deletions(-)

diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
index 65fe1e54c6da..2de75404bda1 100644
--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -587,28 +587,6 @@ extern inline u64 readq_relaxed(const volatile void __iomem *addr)
 #define writel_relaxed	writel
 #define writeq_relaxed	writeq
 
-/*
- * String version of IO memory access ops:
- */
-extern void memcpy_fromio(void *, const volatile void __iomem *, long);
-extern void memcpy_toio(volatile void __iomem *, const void *, long);
-extern void _memset_c_io(volatile void __iomem *, unsigned long, long);
-
-static inline void memset_io(volatile void __iomem *addr, u8 c, long len)
-{
-	_memset_c_io(addr, 0x0101010101010101UL * c, len);
-}
-
-#define __HAVE_ARCH_MEMSETW_IO
-static inline void memsetw_io(volatile void __iomem *addr, u16 c, long len)
-{
-	_memset_c_io(addr, 0x0001000100010001UL * c, len);
-}
-
-#define memset_io memset_io
-#define memcpy_fromio memcpy_fromio
-#define memcpy_toio memcpy_toio
-
 /*
  * String versions of in/out ops:
  */
diff --git a/arch/alpha/include/asm/vga.h b/arch/alpha/include/asm/vga.h
index 919931cb5b63..cac735bc3e16 100644
--- a/arch/alpha/include/asm/vga.h
+++ b/arch/alpha/include/asm/vga.h
@@ -34,7 +34,7 @@ static inline u16 scr_readw(volatile const u16 *addr)
 static inline void scr_memsetw(u16 *s, u16 c, unsigned int count)
 {
 	if (__is_ioaddr(s))
-		memsetw_io((u16 __iomem *) s, c, count);
+		memset_io((u16 __iomem *) s, c, count);
 	else
 		memset16(s, c, count / 2);
 }
diff --git a/arch/alpha/kernel/io.c b/arch/alpha/kernel/io.c
index c28035d6d1e6..0d24a6ad682c 100644
--- a/arch/alpha/kernel/io.c
+++ b/arch/alpha/kernel/io.c
@@ -476,177 +476,6 @@ void outsl(unsigned long port, const void *src, unsigned long count)
 EXPORT_SYMBOL(iowrite32_rep);
 EXPORT_SYMBOL(outsl);
 
-
-/*
- * Copy data from IO memory space to "real" memory space.
- * This needs to be optimized.
- */
-void memcpy_fromio(void *to, const volatile void __iomem *from, long count)
-{
-	/* Optimize co-aligned transfers.  Everything else gets handled
-	   a byte at a time. */
-
-	if (count >= 8 && ((u64)to & 7) == ((u64)from & 7)) {
-		count -= 8;
-		do {
-			*(u64 *)to = __raw_readq(from);
-			count -= 8;
-			to += 8;
-			from += 8;
-		} while (count >= 0);
-		count += 8;
-	}
-
-	if (count >= 4 && ((u64)to & 3) == ((u64)from & 3)) {
-		count -= 4;
-		do {
-			*(u32 *)to = __raw_readl(from);
-			count -= 4;
-			to += 4;
-			from += 4;
-		} while (count >= 0);
-		count += 4;
-	}
-
-	if (count >= 2 && ((u64)to & 1) == ((u64)from & 1)) {
-		count -= 2;
-		do {
-			*(u16 *)to = __raw_readw(from);
-			count -= 2;
-			to += 2;
-			from += 2;
-		} while (count >= 0);
-		count += 2;
-	}
-
-	while (count > 0) {
-		*(u8 *) to = __raw_readb(from);
-		count--;
-		to++;
-		from++;
-	}
-	mb();
-}
-
-EXPORT_SYMBOL(memcpy_fromio);
-
-
-/*
- * Copy data from "real" memory space to IO memory space.
- * This needs to be optimized.
- */
-void memcpy_toio(volatile void __iomem *to, const void *from, long count)
-{
-	/* Optimize co-aligned transfers.  Everything else gets handled
-	   a byte at a time. */
-	/* FIXME -- align FROM.  */
-
-	if (count >= 8 && ((u64)to & 7) == ((u64)from & 7)) {
-		count -= 8;
-		do {
-			__raw_writeq(*(const u64 *)from, to);
-			count -= 8;
-			to += 8;
-			from += 8;
-		} while (count >= 0);
-		count += 8;
-	}
-
-	if (count >= 4 && ((u64)to & 3) == ((u64)from & 3)) {
-		count -= 4;
-		do {
-			__raw_writel(*(const u32 *)from, to);
-			count -= 4;
-			to += 4;
-			from += 4;
-		} while (count >= 0);
-		count += 4;
-	}
-
-	if (count >= 2 && ((u64)to & 1) == ((u64)from & 1)) {
-		count -= 2;
-		do {
-			__raw_writew(*(const u16 *)from, to);
-			count -= 2;
-			to += 2;
-			from += 2;
-		} while (count >= 0);
-		count += 2;
-	}
-
-	while (count > 0) {
-		__raw_writeb(*(const u8 *) from, to);
-		count--;
-		to++;
-		from++;
-	}
-	mb();
-}
-
-EXPORT_SYMBOL(memcpy_toio);
-
-
-/*
- * "memset" on IO memory space.
- */
-void _memset_c_io(volatile void __iomem *to, unsigned long c, long count)
-{
-	/* Handle any initial odd byte */
-	if (count > 0 && ((u64)to & 1)) {
-		__raw_writeb(c, to);
-		to++;
-		count--;
-	}
-
-	/* Handle any initial odd halfword */
-	if (count >= 2 && ((u64)to & 2)) {
-		__raw_writew(c, to);
-		to += 2;
-		count -= 2;
-	}
-
-	/* Handle any initial odd word */
-	if (count >= 4 && ((u64)to & 4)) {
-		__raw_writel(c, to);
-		to += 4;
-		count -= 4;
-	}
-
-	/* Handle all full-sized quadwords: we're aligned
-	   (or have a small count) */
-	count -= 8;
-	if (count >= 0) {
-		do {
-			__raw_writeq(c, to);
-			to += 8;
-			count -= 8;
-		} while (count >= 0);
-	}
-	count += 8;
-
-	/* The tail is word-aligned if we still have count >= 4 */
-	if (count >= 4) {
-		__raw_writel(c, to);
-		to += 4;
-		count -= 4;
-	}
-
-	/* The tail is half-word aligned if we have count >= 2 */
-	if (count >= 2) {
-		__raw_writew(c, to);
-		to += 2;
-		count -= 2;
-	}
-
-	/* And finally, one last byte.. */
-	if (count) {
-		__raw_writeb(c, to);
-	}
-	mb();
-}
-
-EXPORT_SYMBOL(_memset_c_io);
-
 #if IS_ENABLED(CONFIG_VGA_CONSOLE) || IS_ENABLED(CONFIG_MDA_CONSOLE)
 
 #include <asm/vga.h>
-- 
2.34.1