Create a new header file, kmap.h, that groups all the definitions and
functions associated with the io mapping and remapping.
Currently the functions are spread across raw_io.h and io_mm.h. And in
the future we will want to use these in io_no.h as well. So it makes
sense to move them all together into a single header file.
It is named after the arch/m68k/mm/kmap.c file that actually implements
many of the exported functions.
Signed-off-by: Greg Ungerer <gerg@xxxxxxxxxxxxxx>
---
arch/m68k/include/asm/atarihw.h | 1 +
arch/m68k/include/asm/io_mm.h | 43 +-------------------
arch/m68k/include/asm/io_no.h | 1 +
arch/m68k/include/asm/kmap.h | 83 ++++++++++++++++++++++++++++++++++++++
arch/m68k/include/asm/nubus.h | 1 +
arch/m68k/include/asm/q40_master.h | 2 +-
arch/m68k/include/asm/raw_io.h | 14 -------
arch/m68k/include/asm/vga.h | 1 +
arch/m68k/include/asm/zorro.h | 1 +
9 files changed, 90 insertions(+), 57 deletions(-)
create mode 100644 arch/m68k/include/asm/kmap.h
diff --git a/arch/m68k/include/asm/atarihw.h b/arch/m68k/include/asm/atarihw.h
index 972c8f3..9000b24 100644
--- a/arch/m68k/include/asm/atarihw.h
+++ b/arch/m68k/include/asm/atarihw.h
@@ -23,6 +23,7 @@
#include <linux/types.h>
#include <asm/bootinfo-atari.h>
#include <asm/raw_io.h>
+#include <asm/kmap.h>
extern u_long atari_mch_cookie;
extern u_long atari_mch_type;
diff --git a/arch/m68k/include/asm/io_mm.h b/arch/m68k/include/asm/io_mm.h
index 22e778e..21fba26 100644
--- a/arch/m68k/include/asm/io_mm.h
+++ b/arch/m68k/include/asm/io_mm.h
@@ -26,6 +26,7 @@
#include <linux/compiler.h>
#include <asm/raw_io.h>
#include <asm/virtconvert.h>
+#include <asm/kmap.h>
#include <asm-generic/iomap.h>
@@ -461,39 +462,6 @@ static inline void isa_delay(void)
#define mmiowb()
-static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
-}
-static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
-}
-#define ioremap_uc ioremap_nocache
-static inline void __iomem *ioremap_wt(unsigned long physaddr,
- unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
-}
-static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
- unsigned long size)
-{
- return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
-}
-
-static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
-{
- __builtin_memset((void __force *) addr, val, count);
-}
-static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
-{
- __builtin_memcpy(dst, (void __force *) src, count);
-}
-static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
-{
- __builtin_memcpy((void __force *) dst, src, count);
-}
-
#ifndef CONFIG_SUN3
#define IO_SPACE_LIMIT 0xffff
#else
@@ -515,15 +483,6 @@ static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int
*/
#define xlate_dev_kmem_ptr(p) p
-static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
-{
- return (void __iomem *) port;
-}
-
-static inline void ioport_unmap(void __iomem *p)
-{
-}
-
#define readb_relaxed(addr) readb(addr)
#define readw_relaxed(addr) readw(addr)
#define readl_relaxed(addr) readl(addr)
diff --git a/arch/m68k/include/asm/io_no.h b/arch/m68k/include/asm/io_no.h
index a84f756..c97c281 100644
--- a/arch/m68k/include/asm/io_no.h
+++ b/arch/m68k/include/asm/io_no.h
@@ -25,6 +25,7 @@
#define writew __raw_writew
#define writel __raw_writel
+#include <asm/kmap.h>
#include <asm/virtconvert.h>
#include <asm-generic/io.h>
diff --git a/arch/m68k/include/asm/kmap.h b/arch/m68k/include/asm/kmap.h
new file mode 100644
index 0000000..50b05f5
--- /dev/null
+++ b/arch/m68k/include/asm/kmap.h
@@ -0,0 +1,83 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _KMAP_H
+#define _KMAP_H
+
+#ifdef CONFIG_MMU
+
+/* Values for nocacheflag and cmode */
+#define IOMAP_FULL_CACHING 0
+#define IOMAP_NOCACHE_SER 1
+#define IOMAP_NOCACHE_NONSER 2
+#define IOMAP_WRITETHROUGH 3
+
+/*
+ * These functions exported by arch/m68k/mm/kmap.c.
+ * Only needed on MMU enabled systems.
+ */
+extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
+ int cacheflag);
+extern void iounmap(void __iomem *addr);
+extern void __iounmap(void *addr, unsigned long size);
+
+#define ioremap ioremap
+static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
+{
+ return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
+}
+
+#define ioremap_nocache ioremap_nocache
+static inline void __iomem *ioremap_nocache(unsigned long physaddr,
+ unsigned long size)
+{
+ return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
+}
+
+#define ioremap_uc ioremap_nocache
+static inline void __iomem *ioremap_wt(unsigned long physaddr,
+ unsigned long size)
+{
+ return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
+}
+
+#define ioremap_fillcache ioremap_fullcache
+static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
+ unsigned long size)
+{
+ return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
+}
+
+#define memset_io memset_io
+static inline void memset_io(volatile void __iomem *addr, unsigned char val,
+ int count)
+{
+ __builtin_memset((void __force *) addr, val, count);
+}
+
+#define memcpy_fromio memcpy_fromio
+static inline void memcpy_fromio(void *dst, const volatile void __iomem *src,
+ int count)
+{
+ __builtin_memcpy(dst, (void __force *) src, count);
+}
+
+#define memcpy_toio memcpy_toio
+static inline void memcpy_toio(volatile void __iomem *dst, const void *src,
+ int count)
+{
+ __builtin_memcpy((void __force *) dst, src, count);
+}
+
+#endif /* CONFIG_MMU */
+
+#define ioport_map ioport_map
+static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
+{
+ return (void __iomem *) port;
+}
+
+#define ioport_unmap ioport_unmap
+static inline void ioport_unmap(void __iomem *p)
+{
+}
+
+#endif /* _KMAP_H */
diff --git a/arch/m68k/include/asm/nubus.h b/arch/m68k/include/asm/nubus.h
index d0d2039..c2281da 100644
--- a/arch/m68k/include/asm/nubus.h
+++ b/arch/m68k/include/asm/nubus.h
@@ -3,6 +3,7 @@
#define _ASM_M68K_NUBUS_H
#include <asm/raw_io.h>
+#include <asm/kmap.h>
#define nubus_readb raw_inb
#define nubus_readw raw_inw
diff --git a/arch/m68k/include/asm/q40_master.h b/arch/m68k/include/asm/q40_master.h
index 3a89c08..9b00fb8 100644
--- a/arch/m68k/include/asm/q40_master.h
+++ b/arch/m68k/include/asm/q40_master.h
@@ -8,7 +8,7 @@
#define _Q40_MASTER_H
#include <asm/raw_io.h>
-
+#include <asm/kmap.h>
#define q40_master_addr 0xff000000
diff --git a/arch/m68k/include/asm/raw_io.h b/arch/m68k/include/asm/raw_io.h
index 05e940c..8576125 100644
--- a/arch/m68k/include/asm/raw_io.h
+++ b/arch/m68k/include/asm/raw_io.h
@@ -13,20 +13,6 @@
#include <asm/byteorder.h>
-
-/* Values for nocacheflag and cmode */
-#define IOMAP_FULL_CACHING 0
-#define IOMAP_NOCACHE_SER 1
-#define IOMAP_NOCACHE_NONSER 2
-#define IOMAP_WRITETHROUGH 3
-
-extern void iounmap(void __iomem *addr);
-
-extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size,
- int cacheflag);
-extern void __iounmap(void *addr, unsigned long size);
-
-
/* ++roman: The assignments to temp. vars avoid that gcc sometimes generates
* two accesses to memory, which may be undesirable for some devices.
*/
diff --git a/arch/m68k/include/asm/vga.h b/arch/m68k/include/asm/vga.h
index 010a624..819d46d 100644
--- a/arch/m68k/include/asm/vga.h
+++ b/arch/m68k/include/asm/vga.h
@@ -3,6 +3,7 @@
#define _ASM_M68K_VGA_H
#include <asm/raw_io.h>
+#include <asm/kmap.h>
/*
* FIXME
diff --git a/arch/m68k/include/asm/zorro.h b/arch/m68k/include/asm/zorro.h
index 96f64bf..60fc4b6 100644
--- a/arch/m68k/include/asm/zorro.h
+++ b/arch/m68k/include/asm/zorro.h
@@ -3,6 +3,7 @@
#define _ASM_M68K_ZORRO_H
#include <asm/raw_io.h>
+#include <asm/kmap.h>
#define z_readb raw_inb
#define z_readw raw_inw
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-m68k" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
