#ifndef _H8300_IO_H #define _H8300_IO_H #ifdef __KERNEL__ #include <linux/config.h> #include <asm/virtconvert.h> #if defined(CONFIG_H83007) || defined(CONFIG_H83068) #include <asm/regs306x.h> #elif defined(CONFIG_H8S2678) #include <asm/regs267x.h> #else #error UNKNOWN CPU TYPE #endif /* * These are for ISA/PCI shared memory _only_ and should never be used * on any other type of memory, including Zorro memory. They are meant to * access the bus in the bus byte order which is little-endian!. * * readX/writeX() are used to access memory mapped devices. On some * architectures the memory mapped IO stuff needs to be accessed * differently. On the m68k architecture, we just read/write the * memory location directly. */ /* ++roman: The assignments to temp. vars avoid that gcc sometimes generates * two accesses to memory, which may be undesireable for some devices. */ /* * swap functions are sometimes needed to interface little-endian hardware */ static inline unsigned short _swapw(volatile unsigned short v) { #ifndef H8300_IO_NOSWAP unsigned short r; __asm__("xor.b %w0,%x0\n\t" "xor.b %x0,%w0\n\t" "xor.b %w0,%x0" :"=r"(r) :"0"(v)); return r; #else return v; #endif } static inline unsigned long _swapl(volatile unsigned long v) { #ifndef H8300_IO_NOSWAP unsigned long r; __asm__("xor.b %w0,%x0\n\t" "xor.b %x0,%w0\n\t" "xor.b %w0,%x0\n\t" "xor.w %e0,%f0\n\t" "xor.w %f0,%e0\n\t" "xor.w %e0,%f0\n\t" "xor.b %w0,%x0\n\t" "xor.b %x0,%w0\n\t" "xor.b %w0,%x0" :"=r"(r) :"0"(v)); return r; #else return v; #endif } #define readb(addr) \ ({ unsigned char __v = \ *(volatile unsigned char *)((unsigned long)(addr) & 0x00ffffff); \ __v; }) #define readw(addr) \ ({ unsigned short __v = \ *(volatile unsigned short *)((unsigned long)(addr) & 0x00ffffff); \ __v; }) #define readl(addr) \ ({ unsigned long __v = \ *(volatile unsigned long *)((unsigned long)(addr) & 0x00ffffff); \ __v; }) #define writeb(b,addr) (void)((*(volatile unsigned char *) \ ((unsigned long)(addr) & 0x00ffffff)) = (b)) #define writew(b,addr) (void)((*(volatile unsigned short *) \ ((unsigned long)(addr) & 0x00ffffff)) = (b)) #define writel(b,addr) (void)((*(volatile unsigned long *) \ ((unsigned long)(addr) & 0x00ffffff)) = (b)) #define readb_relaxed(addr) readb(addr) #define readw_relaxed(addr) readw(addr) #define readl_relaxed(addr) readl(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 static inline int h8300_buswidth(unsigned int addr) { return (*(volatile unsigned char *)ABWCR & (1 << ((addr >> 21) & 7))) == 0; } static inline void io_outsb(unsigned int addr, const void *buf, int len) { volatile unsigned char *ap_b = (volatile unsigned char *) addr; volatile unsigned short *ap_w = (volatile unsigned short *) addr; unsigned char *bp = (unsigned char *) buf; if(h8300_buswidth(addr) && (addr & 1)) { while (len--) *ap_w = *bp++; } else { while (len--) *ap_b = *bp++; } } static inline void io_outsw(unsigned int addr, const void *buf, int len) { volatile unsigned short *ap = (volatile unsigned short *) addr; unsigned short *bp = (unsigned short *) buf; while (len--) *ap = _swapw(*bp++); } static inline void io_outsl(unsigned int addr, const void *buf, int len) { volatile unsigned long *ap = (volatile unsigned long *) addr; unsigned long *bp = (unsigned long *) buf; while (len--) *ap = _swapl(*bp++); } static inline void io_outsw_noswap(unsigned int addr, const void *buf, int len) { volatile unsigned short *ap = (volatile unsigned short *) addr; unsigned short *bp = (unsigned short *) buf; while (len--) *ap = *bp++; } static inline void io_outsl_noswap(unsigned int addr, const void *buf, int len) { volatile unsigned long *ap = (volatile unsigned long *) addr; unsigned long *bp = (unsigned long *) buf; while (len--) *ap = *bp++; } static inline void io_insb(unsigned int addr, void *buf, int len) { volatile unsigned char *ap_b; volatile unsigned short *ap_w; unsigned char *bp = (unsigned char *) buf; if(h8300_buswidth(addr)) { ap_w = (volatile unsigned short *)(addr & ~1); while (len--) *bp++ = *ap_w & 0xff; } else { ap_b = (volatile unsigned char *)addr; while (len--) *bp++ = *ap_b; } } static inline void io_insw(unsigned int addr, void *buf, int len) { volatile unsigned short *ap = (volatile unsigned short *) addr; unsigned short *bp = (unsigned short *) buf; while (len--) *bp++ = _swapw(*ap); } static inline void io_insl(unsigned int addr, void *buf, int len) { volatile unsigned long *ap = (volatile unsigned long *) addr; unsigned long *bp = (unsigned long *) buf; while (len--) *bp++ = _swapl(*ap); } static inline void io_insw_noswap(unsigned int addr, void *buf, int len) { volatile unsigned short *ap = (volatile unsigned short *) addr; unsigned short *bp = (unsigned short *) buf; while (len--) *bp++ = *ap; } static inline void io_insl_noswap(unsigned int addr, void *buf, int len) { volatile unsigned long *ap = (volatile unsigned long *) addr; unsigned long *bp = (unsigned long *) buf; while (len--) *bp++ = *ap; } /* * make the short names macros so specific devices * can override them as required */ #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)) #define mmiowb() #define inb(addr) ((h8300_buswidth(addr))?readw((addr) & ~1) & 0xff:readb(addr)) #define inw(addr) _swapw(readw(addr)) #define inl(addr) _swapl(readl(addr)) #define outb(x,addr) ((void)((h8300_buswidth(addr) && \ ((addr) & 1))?writew(x,(addr) & ~1):writeb(x,addr))) #define outw(x,addr) ((void) writew(_swapw(x),addr)) #define outl(x,addr) ((void) writel(_swapl(x),addr)) #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 outsb(a,b,l) io_outsb(a,b,l) #define outsw(a,b,l) io_outsw(a,b,l) #define outsl(a,b,l) io_outsl(a,b,l) #define insb(a,b,l) io_insb(a,b,l) #define insw(a,b,l) io_insw(a,b,l) #define insl(a,b,l) io_insl(a,b,l) #define IO_SPACE_LIMIT 0xffffff /* Values for nocacheflag and cmode */ #define IOMAP_FULL_CACHING 0 #define IOMAP_NOCACHE_SER 1 #define IOMAP_NOCACHE_NONSER 2 #define IOMAP_WRITETHROUGH 3 extern void *__ioremap(unsigned long physaddr, unsigned long size, int cacheflag); extern void __iounmap(void *addr, unsigned long size); static inline void *ioremap(unsigned long physaddr, unsigned long size) { return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); } static inline void *ioremap_nocache(unsigned long physaddr, unsigned long size) { return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); } static inline void *ioremap_writethrough(unsigned long physaddr, unsigned long size) { return __ioremap(physaddr, size, IOMAP_WRITETHROUGH); } static inline void *ioremap_fullcache(unsigned long physaddr, unsigned long size) { return __ioremap(physaddr, size, IOMAP_FULL_CACHING); } extern void iounmap(void *addr); /* Nothing to do */ #define dma_cache_inv(_start,_size) do { } while (0) #define dma_cache_wback(_start,_size) do { } while (0) #define dma_cache_wback_inv(_start,_size) do { } while (0) /* H8/300 internal 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 long 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 long b, unsigned long addr) { *(volatile unsigned long*)addr = b; } /* Pages to physical address... */ #define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT) #define page_to_bus(page) ((page - mem_map) << PAGE_SHIFT) /* * Macros used for converting between virtual and physical mappings. */ #define mm_ptov(vaddr) ((void *) (vaddr)) #define mm_vtop(vaddr) ((unsigned long) (vaddr)) #define phys_to_virt(vaddr) ((void *) (vaddr)) #define virt_to_phys(vaddr) ((unsigned long) (vaddr)) #define virt_to_bus virt_to_phys #define bus_to_virt phys_to_virt /* * 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 /* _H8300_IO_H */