376 lines
10 KiB
C
376 lines
10 KiB
C
/*
|
|
* 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/compiler.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 __iomem *isa_itb(unsigned long addr)
|
|
{
|
|
switch(ISA_TYPE)
|
|
{
|
|
#ifdef CONFIG_Q40
|
|
case Q40_ISA: return (u8 __iomem *)Q40_ISA_IO_B(addr);
|
|
#endif
|
|
#ifdef CONFIG_GG2
|
|
case GG2_ISA: return (u8 __iomem *)GG2_ISA_IO_B(addr);
|
|
#endif
|
|
#ifdef CONFIG_AMIGA_PCMCIA
|
|
case AG_ISA: return (u8 __iomem *)AG_ISA_IO_B(addr);
|
|
#endif
|
|
default: return NULL; /* avoid warnings, just in case */
|
|
}
|
|
}
|
|
static inline u16 __iomem *isa_itw(unsigned long addr)
|
|
{
|
|
switch(ISA_TYPE)
|
|
{
|
|
#ifdef CONFIG_Q40
|
|
case Q40_ISA: return (u16 __iomem *)Q40_ISA_IO_W(addr);
|
|
#endif
|
|
#ifdef CONFIG_GG2
|
|
case GG2_ISA: return (u16 __iomem *)GG2_ISA_IO_W(addr);
|
|
#endif
|
|
#ifdef CONFIG_AMIGA_PCMCIA
|
|
case AG_ISA: return (u16 __iomem *)AG_ISA_IO_W(addr);
|
|
#endif
|
|
default: return NULL; /* avoid warnings, just in case */
|
|
}
|
|
}
|
|
static inline u8 __iomem *isa_mtb(unsigned long addr)
|
|
{
|
|
switch(ISA_TYPE)
|
|
{
|
|
#ifdef CONFIG_Q40
|
|
case Q40_ISA: return (u8 __iomem *)Q40_ISA_MEM_B(addr);
|
|
#endif
|
|
#ifdef CONFIG_GG2
|
|
case GG2_ISA: return (u8 __iomem *)GG2_ISA_MEM_B(addr);
|
|
#endif
|
|
#ifdef CONFIG_AMIGA_PCMCIA
|
|
case AG_ISA: return (u8 __iomem *)addr;
|
|
#endif
|
|
default: return NULL; /* avoid warnings, just in case */
|
|
}
|
|
}
|
|
static inline u16 __iomem *isa_mtw(unsigned long addr)
|
|
{
|
|
switch(ISA_TYPE)
|
|
{
|
|
#ifdef CONFIG_Q40
|
|
case Q40_ISA: return (u16 __iomem *)Q40_ISA_MEM_W(addr);
|
|
#endif
|
|
#ifdef CONFIG_GG2
|
|
case GG2_ISA: return (u16 __iomem *)GG2_ISA_MEM_W(addr);
|
|
#endif
|
|
#ifdef CONFIG_AMIGA_PCMCIA
|
|
case AG_ISA: return (u16 __iomem *)addr;
|
|
#endif
|
|
default: return NULL; /* 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 __iomem *ioremap(unsigned long physaddr, unsigned long size)
|
|
{
|
|
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
|
|
}
|
|
static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
|
|
{
|
|
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
|
|
}
|
|
static inline void __iomem *ioremap_writethrough(unsigned long physaddr,
|
|
unsigned long size)
|
|
{
|
|
return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
|
|
}
|
|
static inline void __iomem *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 */
|