--- /dev/null
+/*
+ * 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 */
--- /dev/null
+/* 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
projects / karo-tx-uboot.git / commitdiff