io.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:9k
- /*
- * linux/include/asm-m68k/io.h
- *
- * 4/1/00 RZ: - rewritten to avoid clashes between ISA/PCI and other
- * IO access
- * - added Q40 support
- * - added skeleton for GG-II and Amiga PCMCIA
- * 2/3/01 RZ: - moved a few more defs into raw_io.h
- *
- * inX/outX/readX/writeX should not be used by any driver unless it does
- * ISA or PCI access. Other drivers should use function defined in raw_io.h
- * or define its own macros on top of these.
- *
- * inX(),outX() are for PCI and ISA I/O
- * readX(),writeX() are for PCI memory
- * isa_readX(),isa_writeX() are for ISA memory
- *
- * moved mem{cpy,set}_*io inside CONFIG_PCI
- */
- #ifndef _IO_H
- #define _IO_H
- #ifdef __KERNEL__
- #include <linux/config.h>
- #include <asm/raw_io.h>
- #include <asm/virtconvert.h>
- #ifdef CONFIG_ATARI
- #include <asm/atarihw.h>
- #endif
- /*
- * IO/MEM definitions for various ISA bridges
- */
- #ifdef CONFIG_Q40
- #define q40_isa_io_base 0xff400000
- #define q40_isa_mem_base 0xff800000
- #define Q40_ISA_IO_B(ioaddr) (q40_isa_io_base+1+4*((unsigned long)(ioaddr)))
- #define Q40_ISA_IO_W(ioaddr) (q40_isa_io_base+ 4*((unsigned long)(ioaddr)))
- #define Q40_ISA_MEM_B(madr) (q40_isa_mem_base+1+4*((unsigned long)(madr)))
- #define Q40_ISA_MEM_W(madr) (q40_isa_mem_base+ 4*((unsigned long)(madr)))
- #define MULTI_ISA 0
- #endif /* Q40 */
- /* GG-II Zorro to ISA bridge */
- #ifdef CONFIG_GG2
- extern unsigned long gg2_isa_base;
- #define GG2_ISA_IO_B(ioaddr) (gg2_isa_base+1+((unsigned long)(ioaddr)*4))
- #define GG2_ISA_IO_W(ioaddr) (gg2_isa_base+ ((unsigned long)(ioaddr)*4))
- #define GG2_ISA_MEM_B(madr) (gg2_isa_base+1+(((unsigned long)(madr)*4) & 0xfffff))
- #define GG2_ISA_MEM_W(madr) (gg2_isa_base+ (((unsigned long)(madr)*4) & 0xfffff))
- #ifndef MULTI_ISA
- #define MULTI_ISA 0
- #else
- #undef MULTI_ISA
- #define MULTI_ISA 1
- #endif
- #endif /* GG2 */
- #ifdef CONFIG_AMIGA_PCMCIA
- #include <asm/amigayle.h>
- #define AG_ISA_IO_B(ioaddr) ( GAYLE_IO+(ioaddr)+(((ioaddr)&1)*GAYLE_ODD) )
- #define AG_ISA_IO_W(ioaddr) ( GAYLE_IO+(ioaddr) )
- #ifndef MULTI_ISA
- #define MULTI_ISA 0
- #else
- #undef MULTI_ISA
- #define MULTI_ISA 1
- #endif
- #endif /* AMIGA_PCMCIA */
- #ifdef CONFIG_ISA
- #if MULTI_ISA == 0
- #undef MULTI_ISA
- #endif
- #define Q40_ISA (1)
- #define GG2_ISA (2)
- #define AG_ISA (3)
- #if defined(CONFIG_Q40) && !defined(MULTI_ISA)
- #define ISA_TYPE Q40_ISA
- #define ISA_SEX 0
- #endif
- #if defined(CONFIG_AMIGA_PCMCIA) && !defined(MULTI_ISA)
- #define ISA_TYPE AG_ISA
- #define ISA_SEX 1
- #endif
- #if defined(CONFIG_GG2) && !defined(MULTI_ISA)
- #define ISA_TYPE GG2_ISA
- #define ISA_SEX 0
- #endif
- #ifdef MULTI_ISA
- extern int isa_type;
- extern int isa_sex;
- #define ISA_TYPE isa_type
- #define ISA_SEX isa_sex
- #endif
- /*
- * define inline addr translation functions. Normally only one variant will
- * be compiled in so the case statement will be optimised away
- */
- static inline unsigned long isa_itb(long addr)
- {
- switch(ISA_TYPE)
- {
- #ifdef CONFIG_Q40
- case Q40_ISA: return Q40_ISA_IO_B(addr);
- #endif
- #ifdef CONFIG_GG2
- case GG2_ISA: return GG2_ISA_IO_B(addr);
- #endif
- #ifdef CONFIG_AMIGA_PCMCIA
- case AG_ISA: return AG_ISA_IO_B(addr);
- #endif
- default: return 0; /* avoid warnings, just in case */
- }
- }
- static inline unsigned long isa_itw(long addr)
- {
- switch(ISA_TYPE)
- {
- #ifdef CONFIG_Q40
- case Q40_ISA: return Q40_ISA_IO_W(addr);
- #endif
- #ifdef CONFIG_GG2
- case GG2_ISA: return GG2_ISA_IO_W(addr);
- #endif
- #ifdef CONFIG_AMIGA_PCMCIA
- case AG_ISA: return AG_ISA_IO_W(addr);
- #endif
- default: return 0; /* avoid warnings, just in case */
- }
- }
- static inline unsigned long isa_mtb(long addr)
- {
- switch(ISA_TYPE)
- {
- #ifdef CONFIG_Q40
- case Q40_ISA: return Q40_ISA_MEM_B(addr);
- #endif
- #ifdef CONFIG_GG2
- case GG2_ISA: return GG2_ISA_MEM_B(addr);
- #endif
- /* FIXME: any ISA mem mapping for PCMCIA? */
- default: return 0; /* avoid warnings, just in case */
- }
- }
- static inline unsigned long isa_mtw(long addr)
- {
- switch(ISA_TYPE)
- {
- #ifdef CONFIG_Q40
- case Q40_ISA: return Q40_ISA_MEM_W(addr);
- #endif
- #ifdef CONFIG_GG2
- case GG2_ISA: return GG2_ISA_MEM_W(addr);
- #endif
- default: return 0; /* avoid warnings, just in case */
- }
- }
- #define isa_inb(port) in_8(isa_itb(port))
- #define isa_inw(port) (ISA_SEX ? in_be16(isa_itw(port)) : in_le16(isa_itw(port)))
- #define isa_outb(val,port) out_8(isa_itb(port),(val))
- #define isa_outw(val,port) (ISA_SEX ? out_be16(isa_itw(port),(val)) : out_le16(isa_itw(port),(val)))
- #define isa_readb(p) in_8(isa_mtb(p))
- #define isa_readw(p) in_le16(isa_mtw(p))
- #define isa_writeb(val,p) out_8(isa_mtb(p),(val))
- #define isa_writew(val,p) out_le16(isa_mtw(p),(val))
- static inline void isa_delay(void)
- {
- switch(ISA_TYPE)
- {
- #ifdef CONFIG_Q40
- case Q40_ISA: isa_outb(0,0x80); break;
- #endif
- #ifdef CONFIG_GG2
- case GG2_ISA: break;
- #endif
- #ifdef CONFIG_AMIGA_PCMCIA
- case AG_ISA: break;
- #endif
- default: break; /* avoid warnings */
- }
- }
- #define isa_inb_p(p) ({unsigned char v=isa_inb(p);isa_delay();v;})
- #define isa_outb_p(v,p) ({isa_outb((v),(p));isa_delay();})
- #define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (buf), (nr))
- #define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (buf), (nr))
- #define isa_insw(port, buf, nr)
- (ISA_SEX ? raw_insw(isa_itw(port), (buf), (nr)) :
- raw_insw_swapw(isa_itw(port), (buf), (nr)))
- #define isa_outsw(port, buf, nr)
- (ISA_SEX ? raw_outsw(isa_itw(port), (buf), (nr)) :
- raw_outsw_swapw(isa_itw(port), (buf), (nr)))
- #endif /* CONFIG_ISA */
- #if defined(CONFIG_ISA) && !defined(CONFIG_PCI)
- #define inb isa_inb
- #define inb_p isa_inb_p
- #define outb isa_outb
- #define outb_p isa_outb_p
- #define inw isa_inw
- #define outw isa_outw
- #define inl isa_inw
- #define outl isa_outw
- #define insb isa_insb
- #define insw isa_insw
- #define outsb isa_outsb
- #define outsw isa_outsw
- #define readb isa_readb
- #define readw isa_readw
- #define writeb isa_writeb
- #define writew isa_writew
- #endif /* CONFIG_ISA */
- #if defined(CONFIG_PCI)
- #define inl(port) in_le32(port)
- #define outl(val,port) out_le32((port),(val))
- #define readl(addr) in_le32(addr)
- #define writel(val,addr) out_le32((addr),(val))
- /* those can be defined for both ISA and PCI - it wont work though */
- #define readb(addr) in_8(addr)
- #define readw(addr) in_le16(addr)
- #define writeb(val,addr) out_8((addr),(val))
- #define writew(val,addr) out_le16((addr),(val))
- #ifndef CONFIG_ISA
- #define inb(port) in_8(port)
- #define outb(val,port) out_8((port),(val))
- #define inw(port) in_le16(port)
- #define outw(val,port) out_le16((port),(val))
- #else
- /*
- * kernel with both ISA and PCI compiled in, those have
- * conflicting defs for in/out. Simply consider port < 1024
- * ISA and everything else PCI. read,write not defined
- * in this case
- */
- #define inb(port) ((port)<1024 ? isa_inb(port) : in_8(port))
- #define inb_p(port) ((port)<1024 ? isa_inb_p(port) : in_8(port))
- #define inw(port) ((port)<1024 ? isa_inw(port) : in_le16(port))
- #define outb(val,port) ((port)<1024 ? isa_outb((val),(port)) : out_8((port),(val)))
- #define outb_p(val,port) ((port)<1024 ? isa_outb_p((val),(port)) : out_8((port),(val)))
- #define outw(val,port) ((port)<1024 ? isa_outw((val),(port)) : out_le16((port),(val)))
- #endif
- #endif /* CONFIG_PCI */
- /* Values for nocacheflag and cmode */
- #define IOMAP_FULL_CACHING 0
- #define IOMAP_NOCACHE_SER 1
- #define IOMAP_NOCACHE_NONSER 2
- #define IOMAP_WRITETHROUGH 3
- /*
- * Change "struct page" to physical address.
- */
- #define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
- extern void iounmap(void *addr);
- extern void *__ioremap(unsigned long physaddr, unsigned long size,
- int cacheflag);
- extern void __iounmap(void *addr, unsigned long size);
- extern inline void *ioremap(unsigned long physaddr, unsigned long size)
- {
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
- }
- extern inline void *ioremap_nocache(unsigned long physaddr, unsigned long size)
- {
- return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
- }
- extern inline void *ioremap_writethrough(unsigned long physaddr,
- unsigned long size)
- {
- return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
- }
- extern inline void *ioremap_fullcache(unsigned long physaddr,
- unsigned long size)
- {
- return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
- }
- /* m68k caches aren't DMA coherent */
- extern void dma_cache_wback_inv(unsigned long start, unsigned long size);
- extern void dma_cache_wback(unsigned long start, unsigned long size);
- extern void dma_cache_inv(unsigned long start, unsigned long size);
- #ifndef CONFIG_SUN3
- #define IO_SPACE_LIMIT 0xffff
- #else
- #define IO_SPACE_LIMIT 0x0fffffff
- #endif
- #endif /* __KERNEL__ */
- #endif /* _IO_H */