diff options
Diffstat (limited to 'arch/powerpc/include/asm/io.h')
| -rw-r--r-- | arch/powerpc/include/asm/io.h | 33 |
1 files changed, 11 insertions, 22 deletions
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h index e0331e754568..3ef40b703c4a 100644 --- a/arch/powerpc/include/asm/io.h +++ b/arch/powerpc/include/asm/io.h @@ -3,6 +3,9 @@ #ifdef __KERNEL__ #define ARCH_HAS_IOREMAP_WC +#ifdef CONFIG_PPC32 +#define ARCH_HAS_IOREMAP_WT +#endif /* * This program is free software; you can redistribute it and/or @@ -108,25 +111,6 @@ extern bool isa_io_special; #define IO_SET_SYNC_FLAG() #endif -/* gcc 4.0 and older doesn't have 'Z' constraint */ -#if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ == 0) -#define DEF_MMIO_IN_X(name, size, insn) \ -static inline u##size name(const volatile u##size __iomem *addr) \ -{ \ - u##size ret; \ - __asm__ __volatile__("sync;"#insn" %0,0,%1;twi 0,%0,0;isync" \ - : "=r" (ret) : "r" (addr), "m" (*addr) : "memory"); \ - return ret; \ -} - -#define DEF_MMIO_OUT_X(name, size, insn) \ -static inline void name(volatile u##size __iomem *addr, u##size val) \ -{ \ - __asm__ __volatile__("sync;"#insn" %1,0,%2" \ - : "=m" (*addr) : "r" (val), "r" (addr) : "memory"); \ - IO_SET_SYNC_FLAG(); \ -} -#else /* newer gcc */ #define DEF_MMIO_IN_X(name, size, insn) \ static inline u##size name(const volatile u##size __iomem *addr) \ { \ @@ -143,7 +127,6 @@ static inline void name(volatile u##size __iomem *addr, u##size val) \ : "=Z" (*addr) : "r" (val) : "memory"); \ IO_SET_SYNC_FLAG(); \ } -#endif #define DEF_MMIO_IN_D(name, size, insn) \ static inline u##size name(const volatile u##size __iomem *addr) \ @@ -746,6 +729,10 @@ static inline void iosync(void) * * * ioremap_wc enables write combining * + * * ioremap_wt enables write through + * + * * ioremap_coherent maps coherent cached memory + * * * iounmap undoes such a mapping and can be hooked * * * __ioremap_at (and the pending __iounmap_at) are low level functions to @@ -767,6 +754,8 @@ extern void __iomem *ioremap(phys_addr_t address, unsigned long size); extern void __iomem *ioremap_prot(phys_addr_t address, unsigned long size, unsigned long flags); extern void __iomem *ioremap_wc(phys_addr_t address, unsigned long size); +void __iomem *ioremap_wt(phys_addr_t address, unsigned long size); +void __iomem *ioremap_coherent(phys_addr_t address, unsigned long size); #define ioremap_nocache(addr, size) ioremap((addr), (size)) #define ioremap_uc(addr, size) ioremap((addr), (size)) #define ioremap_cache(addr, size) \ @@ -777,12 +766,12 @@ extern void iounmap(volatile void __iomem *addr); extern void __iomem *__ioremap(phys_addr_t, unsigned long size, unsigned long flags); extern void __iomem *__ioremap_caller(phys_addr_t, unsigned long size, - unsigned long flags, void *caller); + pgprot_t prot, void *caller); extern void __iounmap(volatile void __iomem *addr); extern void __iomem * __ioremap_at(phys_addr_t pa, void *ea, - unsigned long size, unsigned long flags); + unsigned long size, pgprot_t prot); extern void __iounmap_at(void *ea, unsigned long size); /* |