Initial revision

2 files changed, 464 insertions, 0 deletions

diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
new file mode 100644
index 0000000000..0d55ca25b4
--- /dev/null
+++ b/include/asm-arm/io.h
@@ -0,0 +1,284 @@
+/*
+ *  linux/include/asm-arm/io.h
+ *
+ *  Copyright (C) 1996-2000 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Modifications:
+ *  16-Sep-1996	RMK	Inlined the inx/outx functions & optimised for both
+ *			constant addresses and variable addresses.
+ *  04-Dec-1997	RMK	Moved a lot of this stuff to the new architecture
+ *			specific IO header files.
+ *  27-Mar-1999	PJB	Second parameter of memcpy_toio is const..
+ *  04-Apr-1999	PJB	Added check_signature.
+ *  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
+
+#include <linux/types.h>
+#include <asm/byteorder.h>
+#include <asm/memory.h>
+#include <asm/arch/hardware.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_getl(a)			(*(volatile unsigned int  *)(a))
+
+#define __arch_putb(v,a)		(*(volatile unsigned char *)(a) = (v))
+#define __arch_putl(v,a)		(*(volatile unsigned int  *)(a) = (v))
+
+extern void __raw_writesb(unsigned int addr, const void *data, int bytelen);
+extern void __raw_writesw(unsigned int addr, const void *data, int wordlen);
+extern void __raw_writesl(unsigned int addr, const void *data, int longlen);
+
+extern void __raw_readsb(unsigned int addr, void *data, int bytelen);
+extern void __raw_readsw(unsigned int addr, void *data, int wordlen);
+extern void __raw_readsl(unsigned int 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)
+
+/*
+ * 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
+ */
+#include <asm/arch/io.h>
+
+/*
+ * IO definitions.  We define {out,in,outs,ins}[bwl] if __io is defined
+ * by the machine.  Otherwise, these definitions are left for the machine
+ * specific header files to pick up.
+ *
+ * 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.
+ */
+#ifdef __io
+#define outb(v,p)			__raw_writeb(v,__io(p))
+#define outw(v,p)			__raw_writew(v,__io(p))
+#define outl(v,p)			__raw_writel(v,__io(p))
+
+#define inb(p)		({ unsigned int __v = __raw_readb(__io(p)); __v; })
+#define inw(p)		({ unsigned int __v = __raw_readw(__io(p)); __v; })
+#define inl(p)		({ unsigned int __v = __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(addr) ({ unsigned int __v = __raw_readb(__mem_pci(addr)); __v; })
+#define readw(addr) ({ unsigned int __v = __raw_readw(__mem_pci(addr)); __v; })
+#define readl(addr) ({ unsigned int __v = __raw_readl(__mem_pci(addr)); __v; })
+
+#define writeb(val,addr)		__raw_writeb(val,__mem_pci(addr))
+#define writew(val,addr)		__raw_writew(val,__mem_pci(addr))
+#define writel(val,addr)		__raw_writel(val,__mem_pci(addr))
+
+#define memset_io(a,b,c)		_memset_io(__mem_pci(a),(b),(c))
+#define memcpy_fromio(a,b,c)		_memcpy_fromio((a),__mem_pci(b),(c))
+#define memcpy_toio(a,b,c)		_memcpy_toio(__mem_pci(a),(b),(c))
+
+#define eth_io_copy_and_sum(a,b,c,d) \
+				eth_copy_and_sum((a),__mem_pci(b),(c),(d))
+
+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 */
+
+/*
+ * remap a physical address `phys' of size `size' with page protection `prot'
+ * into virtual address `from'
+ */
+#define io_remap_page_range(from,phys,size,prot) \
+		remap_page_range(from,phys,size,prot)
+
+
+/*
+ * 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 */
+
+#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 isa_eth_io_copy_and_sum(a,b,c,d) \
+				__readwrite_bug("isa_eth_io_copy_and_sum")
+
+#define isa_check_signature(io,sig,len)	(0)
+
+#endif	/* __mem_isa */
+
+#endif	/* __ASM_ARM_IO_H */
diff --git a/include/asm-ppc/io.h b/include/asm-ppc/io.h
new file mode 100644
index 0000000000..652b12baf5
--- /dev/null
+++ b/include/asm-ppc/io.h
@@ -0,0 +1,180 @@
+/* originally from linux source.
+ * removed the dependencies on CONFIG_ values
+ * removed virt_to_phys stuff (and in fact everything surrounded by #if __KERNEL__)
+ * Modified By Rob Taylor, Flying Pig Systems, 2000
+ */
+
+#ifndef _PPC_IO_H
+#define _PPC_IO_H
+
+#include <linux/config.h>
+#include <asm/byteorder.h>
+
+#define SIO_CONFIG_RA   0x398
+#define SIO_CONFIG_RD   0x399
+
+
+#define readb(addr) in_8((volatile u8 *)(addr))
+#define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
+#if !defined(__BIG_ENDIAN)
+#define readw(addr) (*(volatile u16 *) (addr))
+#define readl(addr) (*(volatile u32 *) (addr))
+#define writew(b,addr) ((*(volatile u16 *) (addr)) = (b))
+#define writel(b,addr) ((*(volatile u32 *) (addr)) = (b))
+#else
+#define readw(addr) in_le16((volatile u16 *)(addr))
+#define readl(addr) in_le32((volatile u32 *)(addr))
+#define writew(b,addr) out_le16((volatile u16 *)(addr),(b))
+#define writel(b,addr) out_le32((volatile u32 *)(addr),(b))
+#endif
+
+/*
+ * The insw/outsw/insl/outsl macros don't do byte-swapping.
+ * They are only used in practice for transferring buffers which
+ * are arrays of bytes, and byte-swapping is not appropriate in
+ * that case.  - paulus
+ */
+#define insb(port, buf, ns) _insb((u8 *)((port)+_IO_BASE), (buf), (ns))
+#define outsb(port, buf, ns)    _outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
+#define insw(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
+#define outsw(port, buf, ns)    _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
+#define insl(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
+#define outsl(port, buf, nl)    _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
+
+#define inb(port)       in_8((u8 *)((port)+_IO_BASE))
+#define outb(val, port)     out_8((u8 *)((port)+_IO_BASE), (val))
+#if !defined(__BIG_ENDIAN)
+#define inw(port)       in_be16((u16 *)((port)+_IO_BASE))
+#define outw(val, port)     out_be16((u16 *)((port)+_IO_BASE), (val))
+#define inl(port)       in_be32((u32 *)((port)+_IO_BASE))
+#define outl(val, port)     out_be32((u32 *)((port)+_IO_BASE), (val))
+#else
+#define inw(port)       in_le16((u16 *)((port)+_IO_BASE))
+#define outw(val, port)     out_le16((u16 *)((port)+_IO_BASE), (val))
+#define inl(port)       in_le32((u32 *)((port)+_IO_BASE))
+#define outl(val, port)     out_le32((u32 *)((port)+_IO_BASE), (val))
+#endif
+
+#define inb_p(port)     in_8((u8 *)((port)+_IO_BASE))
+#define outb_p(val, port)   out_8((u8 *)((port)+_IO_BASE), (val))
+#define inw_p(port)     in_le16((u16 *)((port)+_IO_BASE))
+#define outw_p(val, port)   out_le16((u16 *)((port)+_IO_BASE), (val))
+#define inl_p(port)     in_le32((u32 *)((port)+_IO_BASE))
+#define outl_p(val, port)   out_le32((u32 *)((port)+_IO_BASE), (val))
+
+extern void _insb(volatile u8 *port, void *buf, int ns);
+extern void _outsb(volatile u8 *port, const void *buf, int ns);
+extern void _insw(volatile u16 *port, void *buf, int ns);
+extern void _outsw(volatile u16 *port, const void *buf, int ns);
+extern void _insl(volatile u32 *port, void *buf, int nl);
+extern void _outsl(volatile u32 *port, const void *buf, int nl);
+extern void _insw_ns(volatile u16 *port, void *buf, int ns);
+extern void _outsw_ns(volatile u16 *port, const void *buf, int ns);
+extern void _insl_ns(volatile u32 *port, void *buf, int nl);
+extern void _outsl_ns(volatile u32 *port, const void *buf, int nl);
+
+/*
+ * The *_ns versions below don't do byte-swapping.
+ * Neither do the standard versions now, these are just here
+ * for older code.
+ */
+#define insw_ns(port, buf, ns)  _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
+#define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
+#define insl_ns(port, buf, nl)  _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
+#define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
+
+
+#define IO_SPACE_LIMIT ~0
+
+#define memset_io(a,b,c)       memset((void *)(a),(b),(c))
+#define memcpy_fromio(a,b,c)   memcpy((a),(void *)(b),(c))
+#define memcpy_toio(a,b,c)  memcpy((void *)(a),(b),(c))
+
+/*
+ * Enforce In-order Execution of I/O:
+ * Acts as a barrier to ensure all previous I/O accesses have
+ * completed before any further ones are issued.
+ */
+#define eieio() __asm__ __volatile__ ("eieio" : : : "memory");
+#define sync()  __asm__ __volatile__ ("sync" : : : "memory");
+
+/* Enforce in-order execution of data I/O.
+ * No distinction between read/write on PPC; use eieio for all three.
+ */
+#define iobarrier_rw() eieio()
+#define iobarrier_r()  eieio()
+#define iobarrier_w()  eieio()
+
+/*
+ * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
+ */
+extern inline int in_8(volatile u8 *addr)
+{
+    int ret;
+
+    __asm__ __volatile__("lbz%U1%X1 %0,%1; eieio" : "=r" (ret) : "m" (*addr));
+    return ret;
+}
+
+extern inline void out_8(volatile u8 *addr, int val)
+{
+    __asm__ __volatile__("stb%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
+}
+
+extern inline int in_le16(volatile u16 *addr)
+{
+    int ret;
+
+    __asm__ __volatile__("lhbrx %0,0,%1; eieio" : "=r" (ret) :
+                  "r" (addr), "m" (*addr));
+    return ret;
+}
+
+extern inline int in_be16(volatile u16 *addr)
+{
+    int ret;
+
+    __asm__ __volatile__("lhz%U1%X1 %0,%1; eieio" : "=r" (ret) : "m" (*addr));
+    return ret;
+}
+
+extern inline void out_le16(volatile u16 *addr, int val)
+{
+    __asm__ __volatile__("sthbrx %1,0,%2; eieio" : "=m" (*addr) :
+                  "r" (val), "r" (addr));
+}
+
+extern inline void out_be16(volatile u16 *addr, int val)
+{
+    __asm__ __volatile__("sth%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
+}
+
+extern inline unsigned in_le32(volatile u32 *addr)
+{
+    unsigned ret;
+
+    __asm__ __volatile__("lwbrx %0,0,%1; eieio" : "=r" (ret) :
+                 "r" (addr), "m" (*addr));
+    return ret;
+}
+
+extern inline unsigned in_be32(volatile u32 *addr)
+{
+    unsigned ret;
+
+    __asm__ __volatile__("lwz%U1%X1 %0,%1; eieio" : "=r" (ret) : "m" (*addr));
+    return ret;
+}
+
+extern inline void out_le32(volatile unsigned *addr, int val)
+{
+    __asm__ __volatile__("stwbrx %1,0,%2; eieio" : "=m" (*addr) :
+                 "r" (val), "r" (addr));
+}
+
+extern inline void out_be32(volatile unsigned *addr, int val)
+{
+    __asm__ __volatile__("stw%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
+}
+
+#endif