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Diffstat (limited to 'include/asm-m68k/io.h')
| -rw-r--r-- | include/asm-m68k/io.h | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/include/asm-m68k/io.h b/include/asm-m68k/io.h new file mode 100644 index 000000000000..6bb8b0d8f99d --- /dev/null +++ b/include/asm-m68k/io.h @@ -0,0 +1,376 @@ +/* + * 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 u8 *isa_itb(unsigned long addr) +{ + switch(ISA_TYPE) + { +#ifdef CONFIG_Q40 + case Q40_ISA: return (u8 *)Q40_ISA_IO_B(addr); +#endif +#ifdef CONFIG_GG2 + case GG2_ISA: return (u8 *)GG2_ISA_IO_B(addr); +#endif +#ifdef CONFIG_AMIGA_PCMCIA + case AG_ISA: return (u8 *)AG_ISA_IO_B(addr); +#endif + default: return 0; /* avoid warnings, just in case */ + } +} +static inline u16 *isa_itw(unsigned long addr) +{ + switch(ISA_TYPE) + { +#ifdef CONFIG_Q40 + case Q40_ISA: return (u16 *)Q40_ISA_IO_W(addr); +#endif +#ifdef CONFIG_GG2 + case GG2_ISA: return (u16 *)GG2_ISA_IO_W(addr); +#endif +#ifdef CONFIG_AMIGA_PCMCIA + case AG_ISA: return (u16 *)AG_ISA_IO_W(addr); +#endif + default: return 0; /* avoid warnings, just in case */ + } +} +static inline u8 *isa_mtb(unsigned long addr) +{ + switch(ISA_TYPE) + { +#ifdef CONFIG_Q40 + case Q40_ISA: return (u8 *)Q40_ISA_MEM_B(addr); +#endif +#ifdef CONFIG_GG2 + case GG2_ISA: return (u8 *)GG2_ISA_MEM_B(addr); +#endif +#ifdef CONFIG_AMIGA_PCMCIA + case AG_ISA: return (u8 *)addr; +#endif + default: return 0; /* avoid warnings, just in case */ + } +} +static inline u16 *isa_mtw(unsigned long addr) +{ + switch(ISA_TYPE) + { +#ifdef CONFIG_Q40 + case Q40_ISA: return (u16 *)Q40_ISA_MEM_W(addr); +#endif +#ifdef CONFIG_GG2 + case GG2_ISA: return (u16 *)GG2_ISA_MEM_W(addr); +#endif +#ifdef CONFIG_AMIGA_PCMCIA + case AG_ISA: return (u16 *)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((unsigned long)(p))) +#define isa_readw(p) \ + (ISA_SEX ? in_be16(isa_mtw((unsigned long)(p))) \ + : in_le16(isa_mtw((unsigned long)(p)))) +#define isa_writeb(val,p) out_8(isa_mtb((unsigned long)(p)),(val)) +#define isa_writew(val,p) \ + (ISA_SEX ? out_be16(isa_mtw((unsigned long)(p)),(val)) \ + : out_le16(isa_mtw((unsigned long)(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) ({u8 v=isa_inb(p);isa_delay();v;}) +#define isa_outb_p(v,p) ({isa_outb((v),(p));isa_delay();}) +#define isa_inw_p(p) ({u16 v=isa_inw(p);isa_delay();v;}) +#define isa_outw_p(v,p) ({isa_outw((v),(p));isa_delay();}) +#define isa_inl_p(p) ({u32 v=isa_inl(p);isa_delay();v;}) +#define isa_outl_p(v,p) ({isa_outl((v),(p));isa_delay();}) + +#define isa_insb(port, buf, nr) raw_insb(isa_itb(port), (u8 *)(buf), (nr)) +#define isa_outsb(port, buf, nr) raw_outsb(isa_itb(port), (u8 *)(buf), (nr)) + +#define isa_insw(port, buf, nr) \ + (ISA_SEX ? raw_insw(isa_itw(port), (u16 *)(buf), (nr)) : \ + raw_insw_swapw(isa_itw(port), (u16 *)(buf), (nr))) + +#define isa_outsw(port, buf, nr) \ + (ISA_SEX ? raw_outsw(isa_itw(port), (u16 *)(buf), (nr)) : \ + raw_outsw_swapw(isa_itw(port), (u16 *)(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 inw_p isa_inw_p +#define outw isa_outw +#define outw_p isa_outw_p +#define inl isa_inw +#define inl_p isa_inw_p +#define outl isa_outw +#define outl_p isa_outw_p +#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 won't 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)) + +#define readb_relaxed(addr) readb(addr) +#define readw_relaxed(addr) readw(addr) +#define readl_relaxed(addr) readl(addr) + +#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 inw_p(port) ((port)<1024 ? isa_inw_p(port) : in_le16(port)) +#define inl(port) ((port)<1024 ? isa_inl(port) : in_le32(port)) +#define inl_p(port) ((port)<1024 ? isa_inl_p(port) : in_le32(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))) +#define outw_p(val,port) ((port)<1024 ? isa_outw_p((val),(port)) : out_le16((port),(val))) +#define outl(val,port) ((port)<1024 ? isa_outl((val),(port)) : out_le32((port),(val))) +#define outl_p(val,port) ((port)<1024 ? isa_outl_p((val),(port)) : out_le32((port),(val))) +#endif +#endif /* CONFIG_PCI */ + +#if !defined(CONFIG_ISA) && !defined(CONFIG_PCI) && defined(CONFIG_HP300) +/* + * We need to define dummy functions otherwise drivers/serial/8250.c doesn't link + */ +#define inb(port) 0xff +#define inb_p(port) 0xff +#define outb(val,port) do { } while (0) +#define outb_p(val,port) do { } while (0) + +/* + * These should be valid on any ioremap()ed region + */ +#define readb(addr) in_8(addr) +#define writeb(val,addr) out_8((addr),(val)) +#define readl(addr) in_le32(addr) +#define writel(val,addr) out_le32((addr),(val)) +#endif + +#define mmiowb() + +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); +} + + +/* 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__ */ + +#define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1 + +/* + * 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 /* _IO_H */ |