[PATCH v2 2/2] alpha: Remove IO memcpy and memset

[Julian Vetter]

Recently new IO memcpy were added in libs/iomem_copy.c. So, remove the
alpha specific implementations and use the ones from the lib code.

Signed-off-by: Julian Vetter <julian@xxxxxxxxxxxxxxxx>
---
Changes for V2:
- Split the patch into two:
  - One that shuffles the memsetw_io and _memset_c_io around
  - And one that removed the memcpy_fromio and memcpy_toio
---
 arch/alpha/include/asm/io.h |   5 --
 arch/alpha/kernel/io.c      | 109 ------------------------------------
 2 files changed, 114 deletions(-)

diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
index d6e868872e19..ba45f84c97f1 100644
--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -590,13 +590,8 @@ extern inline u64 readq_relaxed(const volatile void __iomem *addr)
 /*
  * 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 memsetw_io(volatile void __iomem *to, u16 c, long count);
 
-#define memcpy_fromio memcpy_fromio
-#define memcpy_toio memcpy_toio
-
 /*
  * String versions of in/out ops:
  */
diff --git a/arch/alpha/kernel/io.c b/arch/alpha/kernel/io.c
index 353b1dcbd422..a6a53fcfafb6 100644
--- a/arch/alpha/kernel/io.c
+++ b/arch/alpha/kernel/io.c
@@ -476,115 +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);
-
 #if IS_ENABLED(CONFIG_VGA_CONSOLE) || IS_ENABLED(CONFIG_MDA_CONSOLE)
 
 #include <asm/vga.h>
-- 
2.34.1