diff options
Diffstat (limited to 'include/asm-h8300/io.h')
| -rw-r--r-- | include/asm-h8300/io.h | 324 |
1 files changed, 0 insertions, 324 deletions
diff --git a/include/asm-h8300/io.h b/include/asm-h8300/io.h deleted file mode 100644 index 26dc6cc..0000000 --- a/include/asm-h8300/io.h +++ /dev/null @@ -1,324 +0,0 @@ -#ifndef _H8300_IO_H -#define _H8300_IO_H - -#ifdef __KERNEL__ - -#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); - -/* 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 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 */ |
