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#ifndef __ASM_SH_IO_H
#define __ASM_SH_IO_H
/*
* Convention:
* read{b,w,l}/write{b,w,l} are for PCI,
* while in{b,w,l}/out{b,w,l} are for ISA
* These may (will) be platform specific function.
* In addition we have 'pausing' versions: in{b,w,l}_p/out{b,w,l}_p
* and 'string' versions: ins{b,w,l}/outs{b,w,l}
* For read{b,w,l} and write{b,w,l} there are also __raw versions, which
* do not have a memory barrier after them.
*
* In addition, we have
* ctrl_in{b,w,l}/ctrl_out{b,w,l} for SuperH specific I/O.
* which are processor specific.
*/
/*
* We follow the Alpha convention here:
* __inb expands to an inline function call (which either calls via the
* mach_vec if generic, or a machine specific implementation)
* _inb is a real function call (note ___raw fns are _ version of __raw)
* inb by default expands to _inb, but the machine specific code may
* define it to __inb if it chooses.
*/
#include <asm/cache.h>
#include <asm/system.h>
#include <linux/config.h>
/*
* Depending on which platform we are running on, we need different
* I/O functions.
*/
#ifdef __KERNEL__
#if defined(CONFIG_SH_GENERIC) || defined(CONFIG_SH_CQREEK) || defined(CONFIG_SH_UNKNOWN)
/* In a generic kernel, we always go through the machine vector. */
#include <asm/machvec.h>
# define __inb(p) sh_mv.mv_inb((p))
# define __inw(p) sh_mv.mv_inw((p))
# define __inl(p) sh_mv.mv_inl((p))
# define __outb(x,p) sh_mv.mv_outb((x),(p))
# define __outw(x,p) sh_mv.mv_outw((x),(p))
# define __outl(x,p) sh_mv.mv_outl((x),(p))
# define __inb_p(p) sh_mv.mv_inb_p((p))
# define __inw_p(p) sh_mv.mv_inw_p((p))
# define __inl_p(p) sh_mv.mv_inl_p((p))
# define __outb_p(x,p) sh_mv.mv_outb_p((x),(p))
# define __outw_p(x,p) sh_mv.mv_outw_p((x),(p))
# define __outl_p(x,p) sh_mv.mv_outl_p((x),(p))
#define __insb(p,b,c) sh_mv.mv_insb((p), (b), (c))
#define __insw(p,b,c) sh_mv.mv_insw((p), (b), (c))
#define __insl(p,b,c) sh_mv.mv_insl((p), (b), (c))
#define __outsb(p,b,c) sh_mv.mv_outsb((p), (b), (c))
#define __outsw(p,b,c) sh_mv.mv_outsw((p), (b), (c))
#define __outsl(p,b,c) sh_mv.mv_outsl((p), (b), (c))
# define __readb(a) sh_mv.mv_readb((a))
# define __readw(a) sh_mv.mv_readw((a))
# define __readl(a) sh_mv.mv_readl((a))
# define __writeb(v,a) sh_mv.mv_writeb((v),(a))
# define __writew(v,a) sh_mv.mv_writew((v),(a))
# define __writel(v,a) sh_mv.mv_writel((v),(a))
# define __ioremap(a,s) sh_mv.mv_ioremap((a), (s))
# define __iounmap(a) sh_mv.mv_iounmap((a))
# define __isa_port2addr(a) sh_mv.mv_isa_port2addr(a)
# define inb __inb
# define inw __inw
# define inl __inl
# define outb __outb
# define outw __outw
# define outl __outl
# define inb_p __inb_p
# define inw_p __inw_p
# define inl_p __inl_p
# define outb_p __outb_p
# define outw_p __outw_p
# define outl_p __outl_p
# define insb __insb
# define insw __insw
# define insl __insl
# define outsb __outsb
# define outsw __outsw
# define outsl __outsl
# define __raw_readb __readb
# define __raw_readw __readw
# define __raw_readl __readl
# define __raw_writeb __writeb
# define __raw_writew __writew
# define __raw_writel __writel
#else
/* Control operations through platform specific headers */
# define __WANT_IO_DEF
# if defined(CONFIG_SH_HP600)
# include <asm/io_hd64461.h>
# elif defined(CONFIG_SH_SOLUTION_ENGINE)
# include <asm/io_se.h>
# elif defined(CONFIG_SH_SH2000)
# include <asm/io_sh2000.h>
# elif defined(CONFIG_SH_DMIDA) || \
defined(CONFIG_SH_STB1_HARP) || \
defined(CONFIG_SH_STB1_OVERDRIVE)
# include <asm/io_hd64465.h>
# elif defined(CONFIG_SH_EC3104)
# include <asm/io_ec3104.h>
# elif defined(CONFIG_SH_DREAMCAST)
# include <asm/io_dc.h>
# elif defined(CONFIG_SH_CAT68701)
# include <asm/io_cat68701.h>
# elif defined(CONFIG_SH_BIGSUR)
# include <asm/io_bigsur.h>
# elif defined(CONFIG_SH_7751_SOLUTION_ENGINE)
# include <asm/io_7751se.h>
# elif defined(CONFIG_SH_ADX)
# include <asm/io_adx.h>
# elif defined(CONFIG_SH_UNKNOWN)
# include <asm/io_unknown.h>
# else
# error "What system is this?"
#endif
#undef __WANT_IO_DEF
#endif /* GENERIC */
#endif /* __KERNEL__ */
/* These are always function calls, in both kernel and user space */
extern unsigned char _inb (unsigned long port);
extern unsigned short _inw (unsigned long port);
extern unsigned int _inl (unsigned long port);
extern void _outb (unsigned char b, unsigned long port);
extern void _outw (unsigned short w, unsigned long port);
extern void _outl (unsigned int l, unsigned long port);
extern unsigned char _inb_p (unsigned long port);
extern unsigned short _inw_p (unsigned long port);
extern unsigned int _inl_p (unsigned long port);
extern void _outb_p (unsigned char b, unsigned long port);
extern void _outw_p (unsigned short w, unsigned long port);
extern void _outl_p (unsigned int l, unsigned long port);
extern void _insb (unsigned long port, void *dst, unsigned long count);
extern void _insw (unsigned long port, void *dst, unsigned long count);
extern void _insl (unsigned long port, void *dst, unsigned long count);
extern void _outsb (unsigned long port, const void *src, unsigned long count);
extern void _outsw (unsigned long port, const void *src, unsigned long count);
extern void _outsl (unsigned long port, const void *src, unsigned long count);
extern unsigned char _readb(unsigned long addr);
extern unsigned short _readw(unsigned long addr);
extern unsigned int _readl(unsigned long addr);
extern void _writeb(unsigned char b, unsigned long addr);
extern void _writew(unsigned short b, unsigned long addr);
extern void _writel(unsigned int b, unsigned long addr);
#ifdef __KERNEL__
extern unsigned char ___raw_readb(unsigned long addr);
extern unsigned short ___raw_readw(unsigned long addr);
extern unsigned int ___raw_readl(unsigned long addr);
extern void ___raw_writeb(unsigned char b, unsigned long addr);
extern void ___raw_writew(unsigned short b, unsigned long addr);
extern void ___raw_writel(unsigned int b, unsigned long addr);
#endif
#ifdef __KERNEL__
/*
* The platform header files may define some of these macros to use
* the inlined versions where appropriate. These macros may also be
* redefined by userlevel programs.
*/
#ifndef inb
# define inb(p) _inb(p)
#endif
#ifndef inw
# define inw(p) _inw(p)
#endif
#ifndef inl
# define inl(p) _inl(p)
#endif
#ifndef outb
# define outb(b,p) _outb((b),(p))
#endif
#ifndef outw
# define outw(w,p) _outw((w),(p))
#endif
#ifndef outl
# define outl(l,p) _outl((l),(p))
#endif
#ifndef inb_p
# define inb_p _inb_p
#endif
#ifndef inw_p
# define inw_p _inw_p
#endif
#ifndef inl_p
# define inl_p _inl_p
#endif
#ifndef outb_p
# define outb_p _outb_p
#endif
#ifndef outw_p
# define outw_p _outw_p
#endif
#ifndef outl_p
# define outl_p _outl_p
#endif
#ifndef insb
# define insb(p,d,c) _insb((p),(d),(c))
#endif
#ifndef insw
# define insw(p,d,c) _insw((p),(d),(c))
#endif
#ifndef insl
# define insl(p,d,c) _insl((p),(d),(c))
#endif
#ifndef outsb
# define outsb(p,s,c) _outsb((p),(s),(c))
#endif
#ifndef outsw
# define outsw(p,s,c) _outsw((p),(s),(c))
#endif
#ifndef outsl
# define outsl(p,s,c) _outsl((p),(s),(c))
#endif
#ifdef __raw_readb
# define readb(a) ({ unsigned long r_ = __raw_readb(a); mb(); r_; })
#endif
#ifdef __raw_readw
# define readw(a) ({ unsigned long r_ = __raw_readw(a); mb(); r_; })
#endif
#ifdef __raw_readl
# define readl(a) ({ unsigned long r_ = __raw_readl(a); mb(); r_; })
#endif
#ifdef __raw_writeb
# define writeb(v,a) ({ __raw_writeb((v),(a)); mb(); })
#endif
#ifdef __raw_writew
# define writew(v,a) ({ __raw_writew((v),(a)); mb(); })
#endif
#ifdef __raw_writel
# define writel(v,a) ({ __raw_writel((v),(a)); mb(); })
#endif
#ifndef __raw_readb
# define __raw_readb(a) ___raw_readb((unsigned long)(a))
#endif
#ifndef __raw_readw
# define __raw_readw(a) ___raw_readw((unsigned long)(a))
#endif
#ifndef __raw_readl
# define __raw_readl(a) ___raw_readl((unsigned long)(a))
#endif
#ifndef __raw_writeb
# define __raw_writeb(v,a) ___raw_writeb((v),(unsigned long)(a))
#endif
#ifndef __raw_writew
# define __raw_writew(v,a) ___raw_writew((v),(unsigned long)(a))
#endif
#ifndef __raw_writel
# define __raw_writel(v,a) ___raw_writel((v),(unsigned long)(a))
#endif
#ifndef readb
# define readb(a) _readb((unsigned long)(a))
#endif
#ifndef readw
# define readw(a) _readw((unsigned long)(a))
#endif
#ifndef readl
# define readl(a) _readl((unsigned long)(a))
#endif
#ifndef writeb
# define writeb(v,a) _writeb((v),(unsigned long)(a))
#endif
#ifndef writew
# define writew(v,a) _writew((v),(unsigned long)(a))
#endif
#ifndef writel
# define writel(v,a) _writel((v),(unsigned long)(a))
#endif
#else
/* Userspace declarations. */
extern unsigned char inb(unsigned long port);
extern unsigned short inw(unsigned long port);
extern unsigned int inl(unsigned long port);
extern void outb(unsigned char b, unsigned long port);
extern void outw(unsigned short w, unsigned long port);
extern void outl(unsigned int l, unsigned long port);
extern void insb(unsigned long port, void *dst, unsigned long count);
extern void insw(unsigned long port, void *dst, unsigned long count);
extern void insl(unsigned long port, void *dst, unsigned long count);
extern void outsb(unsigned long port, const void *src, unsigned long count);
extern void outsw(unsigned long port, const void *src, unsigned long count);
extern void outsl(unsigned long port, const void *src, unsigned long count);
extern unsigned char readb(unsigned long addr);
extern unsigned short readw(unsigned long addr);
extern unsigned long readl(unsigned long addr);
extern void writeb(unsigned char b, unsigned long addr);
extern void writew(unsigned short b, unsigned long addr);
extern void writel(unsigned int b, unsigned long addr);
#endif /* __KERNEL__ */
#ifdef __KERNEL__
/*
* If the platform has PC-like I/O, this function converts the offset into
* an address.
*/
static __inline__ unsigned long isa_port2addr(unsigned long offset)
{
return __isa_port2addr(offset);
}
#define isa_readb(a) readb(isa_port2addr(a))
#define isa_readw(a) readw(isa_port2addr(a))
#define isa_readl(a) readl(isa_port2addr(a))
#define isa_writeb(b,a) writeb(b,isa_port2addr(a))
#define isa_writew(w,a) writew(w,isa_port2addr(a))
#define isa_writel(l,a) writel(l,isa_port2addr(a))
#define isa_memset_io(a,b,c) \
memset((void *)(isa_port2addr((unsigned long)a)),(b),(c))
#define isa_memcpy_fromio(a,b,c) \
memcpy((a),(void *)(isa_port2addr((unsigned long)(b))),(c))
#define isa_memcpy_toio(a,b,c) \
memcpy((void *)(isa_port2addr((unsigned long)(a))),(b),(c))
/* We really want to try and get these to memcpy etc */
extern void memcpy_fromio(void *, unsigned long, unsigned long);
extern void memcpy_toio(unsigned long, const void *, unsigned long);
extern void memset_io(unsigned long, int, unsigned long);
/* SuperH on-chip I/O functions */
static __inline__ unsigned char ctrl_inb(unsigned long addr)
{
return *(volatile unsigned char*)addr;
}
static __inline__ unsigned short ctrl_inw(unsigned long addr)
{
return *(volatile unsigned short*)addr;
}
static __inline__ unsigned int ctrl_inl(unsigned long addr)
{
return *(volatile unsigned long*)addr;
}
static __inline__ void ctrl_outb(unsigned char b, unsigned long addr)
{
*(volatile unsigned char*)addr = b;
}
static __inline__ void ctrl_outw(unsigned short b, unsigned long addr)
{
*(volatile unsigned short*)addr = b;
}
static __inline__ void ctrl_outl(unsigned int b, unsigned long addr)
{
*(volatile unsigned long*)addr = b;
}
#define IO_SPACE_LIMIT 0xffffffff
#include <asm/addrspace.h>
/*
* Change virtual addresses to physical addresses and vv.
* These are trivial on the 1:1 Linux/SuperH mapping
*/
static __inline__ unsigned long virt_to_phys(volatile void * address)
{
return PHYSADDR(address);
}
static __inline__ void * phys_to_virt(unsigned long address)
{
return (void *)P1SEGADDR(address);
}
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt
#define page_to_bus page_to_phys
/*
* readX/writeX() are used to access memory mapped devices. On some
* architectures the memory mapped IO stuff needs to be accessed
* differently. On the x86 architecture, we just read/write the
* memory location directly.
*
* On SH, we have the whole physical address space mapped at all times
* (as MIPS does), so "ioremap()" and "iounmap()" do not need to do
* anything. (This isn't true for all machines but we still handle
* these cases with wired TLB entries anyway ...)
*
* We cheat a bit and always return uncachable areas until we've fixed
* the drivers to handle caching properly.
*/
static __inline__ void * ioremap(unsigned long offset, unsigned long size)
{
return __ioremap(offset, size);
}
static __inline__ void iounmap(void *addr)
{
return __iounmap(addr);
}
#define ioremap_nocache(off,size) ioremap(off,size)
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;
}
/*
* The caches on some architectures aren't dma-coherent and have need to
* handle this in software. There are three types of operations that
* can be applied to dma buffers.
*
* - dma_cache_wback_inv(start, size) makes caches and RAM coherent by
* writing the content of the caches back to memory, if necessary.
* The function also invalidates the affected part of the caches as
* necessary before DMA transfers from outside to memory.
* - dma_cache_inv(start, size) invalidates the affected parts of the
* caches. Dirty lines of the caches may be written back or simply
* be discarded. This operation is necessary before dma operations
* to the memory.
* - dma_cache_wback(start, size) writes back any dirty lines but does
* not invalidate the cache. This can be used before DMA reads from
* memory,
*/
#define dma_cache_wback_inv(_start,_size) \
__flush_purge_region(_start,_size)
#define dma_cache_inv(_start,_size) \
__flush_invalidate_region(_start,_size)
#define dma_cache_wback(_start,_size) \
__flush_wback_region(_start,_size)
#endif /* __KERNEL__ */
#endif /* __ASM_SH_IO_H */
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