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-rw-r--r--include/asm-arm/io.h287
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diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
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-/*
- * 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
- * 05-Oct-2004 BJD Moved memory string functions to use void __iomem
- */
-#ifndef __ASM_ARM_IO_H
-#define __ASM_ARM_IO_H
-
-#ifdef __KERNEL__
-
-#include <linux/types.h>
-#include <asm/byteorder.h>
-#include <asm/memory.h>
-
-/*
- * ISA I/O bus memory addresses are 1:1 with the physical address.
- */
-#define isa_virt_to_bus virt_to_phys
-#define isa_page_to_bus page_to_phys
-#define isa_bus_to_virt phys_to_virt
-
-/*
- * Generic IO read/write. These perform native-endian accesses. Note
- * that some architectures will want to re-define __raw_{read,write}w.
- */
-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) (__chk_io_ptr(a), *(volatile unsigned char __force *)(a) = (v))
-#define __raw_writew(v,a) (__chk_io_ptr(a), *(volatile unsigned short __force *)(a) = (v))
-#define __raw_writel(v,a) (__chk_io_ptr(a), *(volatile unsigned int __force *)(a) = (v))
-
-#define __raw_readb(a) (__chk_io_ptr(a), *(volatile unsigned char __force *)(a))
-#define __raw_readw(a) (__chk_io_ptr(a), *(volatile unsigned short __force *)(a))
-#define __raw_readl(a) (__chk_io_ptr(a), *(volatile unsigned int __force *)(a))
-
-/*
- * Architecture ioremap implementation.
- */
-#define MT_DEVICE 0
-#define MT_DEVICE_NONSHARED 1
-#define MT_DEVICE_CACHED 2
-#define MT_DEVICE_IXP2000 3
-/*
- * types 4 onwards can be found in asm/mach/map.h and are undefined
- * for ioremap
- */
-
-/*
- * __arm_ioremap takes CPU physical address.
- * __arm_ioremap_pfn takes a Page Frame Number and an offset into that page
- */
-extern void __iomem * __arm_ioremap_pfn(unsigned long, unsigned long, size_t, unsigned int);
-extern void __iomem * __arm_ioremap(unsigned long, size_t, unsigned int);
-extern void __iounmap(volatile void __iomem *addr);
-
-/*
- * Bad read/write accesses...
- */
-extern void __readwrite_bug(const char *fn);
-
-/*
- * Now, pick up the machine-defined IO definitions
- */
-#include <asm/arch/io.h>
-
-/*
- * 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 numerous
- * 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.
- */
-#ifdef __io
-#define outb(v,p) __raw_writeb(v,__io(p))
-#define outw(v,p) __raw_writew((__force __u16) \
- cpu_to_le16(v),__io(p))
-#define outl(v,p) __raw_writel((__force __u32) \
- cpu_to_le32(v),__io(p))
-
-#define inb(p) ({ __u8 __v = __raw_readb(__io(p)); __v; })
-#define inw(p) ({ __u16 __v = le16_to_cpu((__force __le16) \
- __raw_readw(__io(p))); __v; })
-#define inl(p) ({ __u32 __v = le32_to_cpu((__force __le32) \
- __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)
-
-/*
- * String version of IO memory access ops:
- */
-extern void _memcpy_fromio(void *, const volatile void __iomem *, size_t);
-extern void _memcpy_toio(volatile void __iomem *, const void *, size_t);
-extern void _memset_io(volatile void __iomem *, int, size_t);
-
-#define mmiowb()
-
-/*
- * Memory access primitives
- * ------------------------
- *
- * These perform PCI memory accesses via an ioremap region. They don't
- * take an address as such, but a cookie.
- *
- * Again, this are defined to perform little endian accesses. See the
- * IO port primitives for more information.
- */
-#ifdef __mem_pci
-#define readb(c) ({ __u8 __v = __raw_readb(__mem_pci(c)); __v; })
-#define readw(c) ({ __u16 __v = le16_to_cpu((__force __le16) \
- __raw_readw(__mem_pci(c))); __v; })
-#define readl(c) ({ __u32 __v = le32_to_cpu((__force __le32) \
- __raw_readl(__mem_pci(c))); __v; })
-#define readb_relaxed(addr) readb(addr)
-#define readw_relaxed(addr) readw(addr)
-#define readl_relaxed(addr) readl(addr)
-
-#define readsb(p,d,l) __raw_readsb(__mem_pci(p),d,l)
-#define readsw(p,d,l) __raw_readsw(__mem_pci(p),d,l)
-#define readsl(p,d,l) __raw_readsl(__mem_pci(p),d,l)
-
-#define writeb(v,c) __raw_writeb(v,__mem_pci(c))
-#define writew(v,c) __raw_writew((__force __u16) \
- cpu_to_le16(v),__mem_pci(c))
-#define writel(v,c) __raw_writel((__force __u32) \
- cpu_to_le32(v),__mem_pci(c))
-
-#define writesb(p,d,l) __raw_writesb(__mem_pci(p),d,l)
-#define writesw(p,d,l) __raw_writesw(__mem_pci(p),d,l)
-#define writesl(p,d,l) __raw_writesl(__mem_pci(p),d,l)
-
-#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))
-
-#elif !defined(readb)
-
-#define readb(c) (__readwrite_bug("readb"),0)
-#define readw(c) (__readwrite_bug("readw"),0)
-#define readl(c) (__readwrite_bug("readl"),0)
-#define writeb(v,c) __readwrite_bug("writeb")
-#define writew(v,c) __readwrite_bug("writew")
-#define writel(v,c) __readwrite_bug("writel")
-
-#define check_signature(io,sig,len) (0)
-
-#endif /* __mem_pci */
-
-/*
- * ioremap and friends.
- *
- * ioremap takes a PCI memory address, as specified in
- * Documentation/IO-mapping.txt.
- *
- */
-#ifndef __arch_ioremap
-#define ioremap(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE)
-#define ioremap_nocache(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE)
-#define ioremap_cached(cookie,size) __arm_ioremap(cookie, size, MT_DEVICE_CACHED)
-#define iounmap(cookie) __iounmap(cookie)
-#else
-#define ioremap(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE)
-#define ioremap_nocache(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE)
-#define ioremap_cached(cookie,size) __arch_ioremap((cookie), (size), MT_DEVICE_CACHED)
-#define iounmap(cookie) __arch_iounmap(cookie)
-#endif
-
-/*
- * io{read,write}{8,16,32} macros
- */
-#ifndef ioread8
-#define ioread8(p) ({ unsigned int __v = __raw_readb(p); __v; })
-#define ioread16(p) ({ unsigned int __v = le16_to_cpu((__force __le16)__raw_readw(p)); __v; })
-#define ioread32(p) ({ unsigned int __v = le32_to_cpu((__force __le32)__raw_readl(p)); __v; })
-
-#define iowrite8(v,p) __raw_writeb(v, p)
-#define iowrite16(v,p) __raw_writew((__force __u16)cpu_to_le16(v), p)
-#define iowrite32(v,p) __raw_writel((__force __u32)cpu_to_le32(v), p)
-
-#define ioread8_rep(p,d,c) __raw_readsb(p,d,c)
-#define ioread16_rep(p,d,c) __raw_readsw(p,d,c)
-#define ioread32_rep(p,d,c) __raw_readsl(p,d,c)
-
-#define iowrite8_rep(p,s,c) __raw_writesb(p,s,c)
-#define iowrite16_rep(p,s,c) __raw_writesw(p,s,c)
-#define iowrite32_rep(p,s,c) __raw_writesl(p,s,c)
-
-extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
-extern void ioport_unmap(void __iomem *addr);
-#endif
-
-struct pci_dev;
-
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen);
-extern void pci_iounmap(struct pci_dev *dev, void __iomem *addr);
-
-/*
- * can the hardware map this into one segment or not, given no other
- * constraints.
- */
-#define BIOVEC_MERGEABLE(vec1, vec2) \
- ((bvec_to_phys((vec1)) + (vec1)->bv_len) == bvec_to_phys((vec2)))
-
-#ifdef CONFIG_MMU
-#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
-extern int valid_phys_addr_range(unsigned long addr, size_t size);
-extern int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
-#endif
-
-/*
- * Convert a physical pointer to a virtual kernel pointer for /dev/mem
- * access
- */
-#define xlate_dev_mem_ptr(p) __va(p)
-
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
-/*
- * Register ISA memory and port locations for glibc iopl/inb/outb
- * emulation.
- */
-extern void register_isa_ports(unsigned int mmio, unsigned int io,
- unsigned int io_shift);
-
-#endif /* __KERNEL__ */
-#endif /* __ASM_ARM_IO_H */