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linux-stable/include/asm-sh64/io.h
Paul Mundt 1ef7cbbe21 sh64: Move *_p() I/O routine variants to io.h. 
These were implemented using an ugly macro for just simple wrapping,
so we just make the wrapping explicit and move it to io.h instead.

Also fixes up some modules:

  CC [M]  drivers/net/8390.o
  In file included from drivers/net/8390.c:6:
  drivers/net/lib8390.c: In function 'ei_start_xmit':
  drivers/net/lib8390.c:329: error: implicit declaration of function 'outb_p'
  drivers/net/lib8390.c: In function '__ei_interrupt':
  drivers/net/lib8390.c:457: error: implicit declaration of function 'inb_p'
  make[2]: *** [drivers/net/8390.o] Error 1
  make[1]: *** [drivers/net] Error 2

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-10-01 16:13:28 +09:00

244 lines
7.1 KiB
C
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#ifndef __ASM_SH64_IO_H
#define __ASM_SH64_IO_H
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* include/asm-sh64/io.h
*
* Copyright (C) 2000, 2001 Paolo Alberelli
* Copyright (C) 2003 Paul Mundt
*
*/
/*
* 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
* ctrl_in{b,w,l}/ctrl_out{b,w,l} for SuperH specific I/O.
* which are processor specific. Address should be the result of
* onchip_remap();
*/
#include <linux/compiler.h>
#include <asm/cache.h>
#include <asm/system.h>
#include <asm/page.h>
#include <asm-generic/iomap.h>
/*
* Nothing overly special here.. instead of doing the same thing
* over and over again, we just define a set of sh64_in/out functions
* with an implicit size. The traditional read{b,w,l}/write{b,w,l}
* mess is wrapped to this, as are the SH-specific ctrl_in/out routines.
*/
static inline unsigned char sh64_in8(const volatile void __iomem *addr)
{
return *(volatile unsigned char __force *)addr;
}
static inline unsigned short sh64_in16(const volatile void __iomem *addr)
{
return *(volatile unsigned short __force *)addr;
}
static inline unsigned int sh64_in32(const volatile void __iomem *addr)
{
return *(volatile unsigned int __force *)addr;
}
static inline unsigned long long sh64_in64(const volatile void __iomem *addr)
{
return *(volatile unsigned long long __force *)addr;
}
static inline void sh64_out8(unsigned char b, volatile void __iomem *addr)
{
*(volatile unsigned char __force *)addr = b;
wmb();
}
static inline void sh64_out16(unsigned short b, volatile void __iomem *addr)
{
*(volatile unsigned short __force *)addr = b;
wmb();
}
static inline void sh64_out32(unsigned int b, volatile void __iomem *addr)
{
*(volatile unsigned int __force *)addr = b;
wmb();
}
static inline void sh64_out64(unsigned long long b, volatile void __iomem *addr)
{
*(volatile unsigned long long __force *)addr = b;
wmb();
}
#define readb(addr) sh64_in8(addr)
#define readw(addr) sh64_in16(addr)
#define readl(addr) sh64_in32(addr)
#define readb_relaxed(addr) sh64_in8(addr)
#define readw_relaxed(addr) sh64_in16(addr)
#define readl_relaxed(addr) sh64_in32(addr)
#define writeb(b, addr) sh64_out8(b, addr)
#define writew(b, addr) sh64_out16(b, addr)
#define writel(b, addr) sh64_out32(b, addr)
#define ctrl_inb(addr) sh64_in8(ioport_map(addr, 1))
#define ctrl_inw(addr) sh64_in16(ioport_map(addr, 2))
#define ctrl_inl(addr) sh64_in32(ioport_map(addr, 4))
#define ctrl_outb(b, addr) sh64_out8(b, ioport_map(addr, 1))
#define ctrl_outw(b, addr) sh64_out16(b, ioport_map(addr, 2))
#define ctrl_outl(b, addr) sh64_out32(b, ioport_map(addr, 4))
#define ioread8(addr) sh64_in8(addr)
#define ioread16(addr) sh64_in16(addr)
#define ioread32(addr) sh64_in32(addr)
#define iowrite8(b, addr) sh64_out8(b, addr)
#define iowrite16(b, addr) sh64_out16(b, addr)
#define iowrite32(b, addr) sh64_out32(b, addr)
#define inb(addr) ctrl_inb(addr)
#define inw(addr) ctrl_inw(addr)
#define inl(addr) ctrl_inl(addr)
#define outb(b, addr) ctrl_outb(b, addr)
#define outw(b, addr) ctrl_outw(b, addr)
#define outl(b, addr) ctrl_outl(b, addr)
void outsw(unsigned long port, const void *addr, unsigned long count);
void insw(unsigned long port, void *addr, unsigned long count);
void outsl(unsigned long port, const void *addr, unsigned long count);
void insl(unsigned long port, void *addr, unsigned long count);
#define inb_p(addr) inb(addr)
#define inw_p(addr) inw(addr)
#define inl_p(addr) inl(addr)
#define outb_p(x,addr) outb(x,addr)
#define outw_p(x,addr) outw(x,addr)
#define outl_p(x,addr) outl(x,addr)
#define __raw_readb readb
#define __raw_readw readw
#define __raw_readl readl
#define __raw_writeb writeb
#define __raw_writew writew
#define __raw_writel writel
void memcpy_toio(void __iomem *to, const void *from, long count);
void memcpy_fromio(void *to, void __iomem *from, long count);
#define mmiowb()
#ifdef __KERNEL__
#ifdef CONFIG_SH_CAYMAN
extern unsigned long smsc_superio_virt;
#endif
#ifdef CONFIG_PCI
extern unsigned long pciio_virt;
#endif
#define IO_SPACE_LIMIT 0xffffffff
/*
* 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 __pa(address);
}
static inline void * phys_to_virt(unsigned long address)
{
return __va(address);
}
extern void * __ioremap(unsigned long phys_addr, unsigned long size,
unsigned long flags);
static inline void * ioremap(unsigned long phys_addr, unsigned long size)
{
return __ioremap(phys_addr, size, 1);
}
static inline void * ioremap_nocache (unsigned long phys_addr, unsigned long size)
{
return __ioremap(phys_addr, size, 0);
}
extern void iounmap(void *addr);
unsigned long onchip_remap(unsigned long addr, unsigned long size, const char* name);
extern void onchip_unmap(unsigned long vaddr);
/*
* 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,
*/
static __inline__ void dma_cache_wback_inv (unsigned long start, unsigned long size)
{
unsigned long s = start & L1_CACHE_ALIGN_MASK;
unsigned long e = (start + size) & L1_CACHE_ALIGN_MASK;
for (; s <= e; s += L1_CACHE_BYTES)
asm volatile ("ocbp %0, 0" : : "r" (s));
}
static __inline__ void dma_cache_inv (unsigned long start, unsigned long size)
{
// Note that caller has to be careful with overzealous
// invalidation should there be partial cache lines at the extremities
// of the specified range
unsigned long s = start & L1_CACHE_ALIGN_MASK;
unsigned long e = (start + size) & L1_CACHE_ALIGN_MASK;
for (; s <= e; s += L1_CACHE_BYTES)
asm volatile ("ocbi %0, 0" : : "r" (s));
}
static __inline__ void dma_cache_wback (unsigned long start, unsigned long size)
{
unsigned long s = start & L1_CACHE_ALIGN_MASK;
unsigned long e = (start + size) & L1_CACHE_ALIGN_MASK;
for (; s <= e; s += L1_CACHE_BYTES)
asm volatile ("ocbwb %0, 0" : : "r" (s));
}
/*
* 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
#endif /* __KERNEL__ */
#endif /* __ASM_SH64_IO_H */
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