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Diffstat (limited to 'include/asm-sh/io.h')
| -rw-r--r-- | include/asm-sh/io.h | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/include/asm-sh/io.h b/include/asm-sh/io.h deleted file mode 100644 index 6bc343fee7a..00000000000 --- a/include/asm-sh/io.h +++ /dev/null @@ -1,311 +0,0 @@ -#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 calls via the mv) - * _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 <asm/addrspace.h> -#include <asm/machvec.h> -#include <linux/config.h> - -/* - * Depending on which platform we are running on, we need different - * I/O functions. - */ - -#ifdef __KERNEL__ -/* - * Since boards are able to define their own set of I/O routines through - * their respective machine vector, we always wrap through the mv. - * - * Also, in the event that a board hasn't provided its own definition for - * a given routine, it will be wrapped to generic code at run-time. - */ - -# 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 - -/* - * 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. - */ -#ifdef __raw_readb -# define readb(a) ({ unsigned long r_ = __raw_readb((unsigned long)a); mb(); r_; }) -#endif -#ifdef __raw_readw -# define readw(a) ({ unsigned long r_ = __raw_readw((unsigned long)a); mb(); r_; }) -#endif -#ifdef __raw_readl -# define readl(a) ({ unsigned long r_ = __raw_readl((unsigned long)a); mb(); r_; }) -#endif - -#ifdef __raw_writeb -# define writeb(v,a) ({ __raw_writeb((v),(unsigned long)(a)); mb(); }) -#endif -#ifdef __raw_writew -# define writew(v,a) ({ __raw_writew((v),(unsigned long)(a)); mb(); }) -#endif -#ifdef __raw_writel -# define writel(v,a) ({ __raw_writel((v),(unsigned long)(a)); mb(); }) -#endif - -#define readb_relaxed(a) readb(a) -#define readw_relaxed(a) readw(a) -#define readl_relaxed(a) readl(a) - -#define mmiowb() - -/* - * 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); -} - -/* - * This function provides a method for the generic case where a board-specific - * isa_port2addr simply needs to return the port + some arbitrary port base. - * - * We use this at board setup time to implicitly set the port base, and - * as a result, we can use the generic isa_port2addr. - */ -static inline void __set_io_port_base(unsigned long pbase) -{ - extern unsigned long generic_io_base; - - generic_io_base = pbase; -} - -#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 - -/* - * 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) - -/* - * 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_SH_IO_H */ |