Restrict the ARM architecture to use only one set of I/O functions.

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>

1 files changed, 18 insertions, 275 deletions

diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
index 08bf8e081a..99d5010e10 100644
--- a/include/asm-arm/io.h
+++ b/include/asm-arm/io.h
@@ -17,286 +17,29 @@
  *  12-Dec-1999	RMK	More cleanups
  *  18-Jun-2000 RMK	Removed virt_to_* and friends definitions
  */
-#ifndef __ASM_ARM_IO_H
-#define __ASM_ARM_IO_H
-
-#ifdef __KERNEL__
-
-#include <linux/types.h>
-#include <linux/compiler.h>
-#include <asm/byteorder.h>
-#include <asm/memory.h>
-
-/*
- * Generic virtual read/write.  Note that we don't support half-word
- * read/writes.  We define __arch_*[bl] here, and leave __arch_*w
- * to the architecture specific code.
- */
-#define __arch_getb(a)			(*(volatile unsigned char *)(a))
-#define __arch_getw(a)			(*(volatile unsigned short *)(a))
-#define __arch_getl(a)			(*(volatile unsigned int *)(a))
-
-#define __arch_putb(v,a)		(*(volatile unsigned char *)(a) = (v))
-#define __arch_putw(v,a)		(*(volatile unsigned short *)(a) = (v))
-#define __arch_putl(v,a)		(*(volatile unsigned int *)(a) = (v))
-
-extern void __raw_writesb(void __iomem *addr, const void *data, int bytelen);
-extern void __raw_writesw(void __iomem *addr, const void *data, int wordlen);
-extern void __raw_writesl(void __iomem *addr, const void *data, int longlen);
-
-extern void __raw_readsb(const void __iomem *addr, void *data, int bytelen);
-extern void __raw_readsw(const void __iomem *addr, void *data, int wordlen);
-extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
-
-#define __raw_writeb(v,a)		__arch_putb(v,a)
-#define __raw_writew(v,a)		__arch_putw(v,a)
-#define __raw_writel(v,a)		__arch_putl(v,a)
-
-#define __raw_readb(a)			__arch_getb(a)
-#define __raw_readw(a)			__arch_getw(a)
-#define __raw_readl(a)			__arch_getl(a)
-
-#define writeb(v,a)			__arch_putb(v,a)
-#define writew(v,a)			__arch_putw(v,a)
-#define writel(v,a)			__arch_putl(v,a)
-
-#define readb(a)			__arch_getb(a)
-#define readw(a)			__arch_getw(a)
-#define readl(a)			__arch_getl(a)
-
-/*
- * The compiler seems to be incapable of optimising constants
- * properly.  Spell it out to the compiler in some cases.
- * These are only valid for small values of "off" (< 1<<12)
- */
-#define __raw_base_writeb(val,base,off)	__arch_base_putb(val,base,off)
-#define __raw_base_writew(val,base,off)	__arch_base_putw(val,base,off)
-#define __raw_base_writel(val,base,off)	__arch_base_putl(val,base,off)
-
-#define __raw_base_readb(base,off)	__arch_base_getb(base,off)
-#define __raw_base_readw(base,off)	__arch_base_getw(base,off)
-#define __raw_base_readl(base,off)	__arch_base_getl(base,off)
 
-/*
- * Now, pick up the machine-defined IO definitions
- */
-
-/*
- *  IO port access primitives
- *  -------------------------
- *
- * The ARM doesn't have special IO access instructions; all IO is memory
- * mapped.  Note that these are defined to perform little endian accesses
- * only.  Their primary purpose is to access PCI and ISA peripherals.
- *
- * Note that for a big endian machine, this implies that the following
- * big endian mode connectivity is in place, as described by numerious
- * ARM documents:
- *
- *    PCI:  D0-D7   D8-D15 D16-D23 D24-D31
- *    ARM: D24-D31 D16-D23  D8-D15  D0-D7
- *
- * The machine specific io.h include defines __io to translate an "IO"
- * address to a memory address.
- *
- * Note that we prevent GCC re-ordering or caching values in expressions
- * by introducing sequence points into the in*() definitions.  Note that
- * __raw_* do not guarantee this behaviour.
- *
- * The {in,out}[bwl] macros are for emulating x86-style PCI/ISA IO space.
+/**
+ * @file
+ * @brief ARM IO access functions
  */
-#ifdef __io
-#define outb(v,p)			__raw_writeb(v,__io(p))
-#define outw(v,p)			__raw_writew(cpu_to_le16(v),__io(p))
-#define outl(v,p)			__raw_writel(cpu_to_le32(v),__io(p))
-
-#define inb(p)	({ unsigned int __v = __raw_readb(__io(p)); __v; })
-#define inw(p)	({ unsigned int __v = le16_to_cpu(__raw_readw(__io(p))); __v; })
-#define inl(p)	({ unsigned int __v = le32_to_cpu(__raw_readl(__io(p))); __v; })
-
-#define outsb(p,d,l)			__raw_writesb(__io(p),d,l)
-#define outsw(p,d,l)			__raw_writesw(__io(p),d,l)
-#define outsl(p,d,l)			__raw_writesl(__io(p),d,l)
-
-#define insb(p,d,l)			__raw_readsb(__io(p),d,l)
-#define insw(p,d,l)			__raw_readsw(__io(p),d,l)
-#define insl(p,d,l)			__raw_readsl(__io(p),d,l)
-#endif
-
-#define outb_p(val,port)		outb((val),(port))
-#define outw_p(val,port)		outw((val),(port))
-#define outl_p(val,port)		outl((val),(port))
-#define inb_p(port)			inb((port))
-#define inw_p(port)			inw((port))
-#define inl_p(port)			inl((port))
 
-#define outsb_p(port,from,len)		outsb(port,from,len)
-#define outsw_p(port,from,len)		outsw(port,from,len)
-#define outsl_p(port,from,len)		outsl(port,from,len)
-#define insb_p(port,to,len)		insb(port,to,len)
-#define insw_p(port,to,len)		insw(port,to,len)
-#define insl_p(port,to,len)		insl(port,to,len)
-
-/*
- * ioremap and friends.
- *
- * ioremap takes a PCI memory address, as specified in
- * linux/Documentation/IO-mapping.txt.  If you want a
- * physical address, use __ioremap instead.
- */
-extern void * __ioremap(unsigned long offset, size_t size, unsigned long flags);
-extern void __iounmap(void *addr);
-
-/*
- * Generic ioremap support.
- *
- * Define:
- *  iomem_valid_addr(off,size)
- *  iomem_to_phys(off)
- */
-#ifdef iomem_valid_addr
-#define __arch_ioremap(off,sz,nocache)				\
- ({								\
-	unsigned long _off = (off), _size = (sz);		\
-	void *_ret = (void *)0;					\
-	if (iomem_valid_addr(_off, _size))			\
-		_ret = __ioremap(iomem_to_phys(_off),_size,0);	\
-	_ret;							\
- })
-
-#define __arch_iounmap __iounmap
-#endif
-
-#define ioremap(off,sz)			__arch_ioremap((off),(sz),0)
-#define ioremap_nocache(off,sz)		__arch_ioremap((off),(sz),1)
-#define iounmap(_addr)			__arch_iounmap(_addr)
-
-/*
- * DMA-consistent mapping functions.  These allocate/free a region of
- * uncached, unwrite-buffered mapped memory space for use with DMA
- * devices.  This is the "generic" version.  The PCI specific version
- * is in pci.h
- */
-extern void *consistent_alloc(int gfp, size_t size, dma_addr_t *handle);
-extern void consistent_free(void *vaddr, size_t size, dma_addr_t handle);
-extern void consistent_sync(void *vaddr, size_t size, int rw);
-
-/*
- * String version of IO memory access ops:
- */
-extern void _memcpy_fromio(void *, unsigned long, size_t);
-extern void _memcpy_toio(unsigned long, const void *, size_t);
-extern void _memset_io(unsigned long, int, size_t);
-
-extern void __readwrite_bug(const char *fn);
-
-/*
- * If this architecture has PCI memory IO, then define the read/write
- * macros.  These should only be used with the cookie passed from
- * ioremap.
- */
-#ifdef __mem_pci
-
-#define readb(c) ({ unsigned int __v = __raw_readb(__mem_pci(c)); __v; })
-#define readw(c) ({ unsigned int __v = le16_to_cpu(__raw_readw(__mem_pci(c))); __v; })
-#define readl(c) ({ unsigned int __v = le32_to_cpu(__raw_readl(__mem_pci(c))); __v; })
-
-#define writeb(v,c)		__raw_writeb(v,__mem_pci(c))
-#define writew(v,c)		__raw_writew(cpu_to_le16(v),__mem_pci(c))
-#define writel(v,c)		__raw_writel(cpu_to_le32(v),__mem_pci(c))
-
-#define memset_io(c,v,l)		_memset_io(__mem_pci(c),(v),(l))
-#define memcpy_fromio(a,c,l)		_memcpy_fromio((a),__mem_pci(c),(l))
-#define memcpy_toio(c,a,l)		_memcpy_toio(__mem_pci(c),(a),(l))
-
-#define eth_io_copy_and_sum(s,c,l,b) \
-				eth_copy_and_sum((s),__mem_pci(c),(l),(b))
-
-static inline int
-check_signature(unsigned long io_addr, const unsigned char *signature,
-		int length)
-{
-	int retval = 0;
-	do {
-		if (readb(io_addr) != *signature)
-			goto out;
-		io_addr++;
-		signature++;
-		length--;
-	} while (length);
-	retval = 1;
-out:
-	return retval;
-}
-
-#elif !defined(readb)
-
-#define readb(addr)			(__readwrite_bug("readb"),0)
-#define readw(addr)			(__readwrite_bug("readw"),0)
-#define readl(addr)			(__readwrite_bug("readl"),0)
-#define writeb(v,addr)			__readwrite_bug("writeb")
-#define writew(v,addr)			__readwrite_bug("writew")
-#define writel(v,addr)			__readwrite_bug("writel")
-
-#define eth_io_copy_and_sum(a,b,c,d)	__readwrite_bug("eth_io_copy_and_sum")
-
-#define check_signature(io,sig,len)	(0)
-
-#endif	/* __mem_pci */
-
-/*
- * If this architecture has ISA IO, then define the isa_read/isa_write
- * macros.
- */
-#ifdef __mem_isa
-
-#define isa_readb(addr)			__raw_readb(__mem_isa(addr))
-#define isa_readw(addr)			__raw_readw(__mem_isa(addr))
-#define isa_readl(addr)			__raw_readl(__mem_isa(addr))
-#define isa_writeb(val,addr)		__raw_writeb(val,__mem_isa(addr))
-#define isa_writew(val,addr)		__raw_writew(val,__mem_isa(addr))
-#define isa_writel(val,addr)		__raw_writel(val,__mem_isa(addr))
-#define isa_memset_io(a,b,c)		_memset_io(__mem_isa(a),(b),(c))
-#define isa_memcpy_fromio(a,b,c)	_memcpy_fromio((a),__mem_isa(b),(c))
-#define isa_memcpy_toio(a,b,c)		_memcpy_toio(__mem_isa((a)),(b),(c))
-
-#define isa_eth_io_copy_and_sum(a,b,c,d) \
-				eth_copy_and_sum((a),__mem_isa(b),(c),(d))
-
-static inline int
-isa_check_signature(unsigned long io_addr, const unsigned char *signature,
-		    int length)
-{
-	int retval = 0;
-	do {
-		if (isa_readb(io_addr) != *signature)
-			goto out;
-		io_addr++;
-		signature++;
-		length--;
-	} while (length);
-	retval = 1;
-out:
-	return retval;
-}
-
-#else	/* __mem_isa */
+#ifndef __ASM_ARM_IO_H
+#define __ASM_ARM_IO_H
 
-#define isa_readb(addr)			(__readwrite_bug("isa_readb"),0)
-#define isa_readw(addr)			(__readwrite_bug("isa_readw"),0)
-#define isa_readl(addr)			(__readwrite_bug("isa_readl"),0)
-#define isa_writeb(val,addr)		__readwrite_bug("isa_writeb")
-#define isa_writew(val,addr)		__readwrite_bug("isa_writew")
-#define isa_writel(val,addr)		__readwrite_bug("isa_writel")
-#define isa_memset_io(a,b,c)		__readwrite_bug("isa_memset_io")
-#define isa_memcpy_fromio(a,b,c)	__readwrite_bug("isa_memcpy_fromio")
-#define isa_memcpy_toio(a,b,c)		__readwrite_bug("isa_memcpy_toio")
+#define readb(a) (*(volatile unsigned char *)(a))
+#define readw(a) (*(volatile unsigned short *)(a))
+#define readl(a) (*(volatile unsigned int *)(a))
 
-#define isa_eth_io_copy_and_sum(a,b,c,d) \
-				__readwrite_bug("isa_eth_io_copy_and_sum")
+#define writeb(v,a) (*(volatile unsigned char *)(a) = (v))
+#define writew(v,a) (*(volatile unsigned short *)(a) = (v))
+#define writel(v,a) (*(volatile unsigned int *)(a) = (v))
 
-#define isa_check_signature(io,sig,len)	(0)
+/* for the ARM architecture the string functions are library based */
+extern void writesb(void __iomem*, const void*, int);
+extern void writesw(void __iomem*, const void*, int);
+extern void writesl(void __iomem*, const void*, int);
+extern void readsb(const void __iomem*, void*, int);
+extern void readsw(const void __iomem*, void*, int);
+extern void readsl(const void __iomem*, void*, int);
 
-#endif	/* __mem_isa */
-#endif	/* __KERNEL__ */
 #endif	/* __ASM_ARM_IO_H */