diff options
Diffstat (limited to 'arch/mips/include/asm/io.h')
-rw-r--r-- | arch/mips/include/asm/io.h | 87 |
1 files changed, 6 insertions, 81 deletions
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h index cf1f2a4a2418..346fffd9e972 100644 --- a/arch/mips/include/asm/io.h +++ b/arch/mips/include/asm/io.h @@ -30,8 +30,6 @@ #include <asm/pgtable-bits.h> #include <asm/processor.h> #include <asm/string.h> - -#include <ioremap.h> #include <mangle-port.h> /* @@ -153,66 +151,9 @@ static inline void *isa_bus_to_virt(unsigned long address) */ #define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT) -extern void __iomem * __ioremap(phys_addr_t offset, phys_addr_t size, unsigned long flags); -extern void __iounmap(const volatile void __iomem *addr); - -static inline void __iomem * __ioremap_mode(phys_addr_t offset, unsigned long size, - unsigned long flags) -{ - void __iomem *addr = plat_ioremap(offset, size, flags); - - if (addr) - return addr; - -#define __IS_LOW512(addr) (!((phys_addr_t)(addr) & (phys_addr_t) ~0x1fffffffULL)) - - if (cpu_has_64bit_addresses) { - u64 base = UNCAC_BASE; - - /* - * R10000 supports a 2 bit uncached attribute therefore - * UNCAC_BASE may not equal IO_BASE. - */ - if (flags == _CACHE_UNCACHED) - base = (u64) IO_BASE; - return (void __iomem *) (unsigned long) (base + offset); - } else if (__builtin_constant_p(offset) && - __builtin_constant_p(size) && __builtin_constant_p(flags)) { - phys_addr_t phys_addr, last_addr; - - phys_addr = fixup_bigphys_addr(offset, size); - - /* Don't allow wraparound or zero size. */ - last_addr = phys_addr + size - 1; - if (!size || last_addr < phys_addr) - return NULL; - - /* - * Map uncached objects in the low 512MB of address - * space using KSEG1. - */ - if (__IS_LOW512(phys_addr) && __IS_LOW512(last_addr) && - flags == _CACHE_UNCACHED) - return (void __iomem *) - (unsigned long)CKSEG1ADDR(phys_addr); - } - - return __ioremap(offset, size, flags); - -#undef __IS_LOW512 -} - -/* - * ioremap_prot - map bus memory into CPU space - * @offset: bus address of the memory - * @size: size of the resource to map - - * ioremap_prot gives the caller control over cache coherency attributes (CCA) - */ -static inline void __iomem *ioremap_prot(phys_addr_t offset, - unsigned long size, unsigned long prot_val) { - return __ioremap_mode(offset, size, prot_val & _CACHE_MASK); -} +void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size, + unsigned long prot_val); +void iounmap(const volatile void __iomem *addr); /* * ioremap - map bus memory into CPU space @@ -226,7 +167,7 @@ static inline void __iomem *ioremap_prot(phys_addr_t offset, * address. */ #define ioremap(offset, size) \ - __ioremap_mode((offset), (size), _CACHE_UNCACHED) + ioremap_prot((offset), (size), _CACHE_UNCACHED) #define ioremap_uc ioremap /* @@ -245,7 +186,7 @@ static inline void __iomem *ioremap_prot(phys_addr_t offset, * memory-like regions on I/O busses. */ #define ioremap_cache(offset, size) \ - __ioremap_mode((offset), (size), _page_cachable_default) + ioremap_prot((offset), (size), _page_cachable_default) /* * ioremap_wc - map bus memory into CPU space @@ -266,23 +207,7 @@ static inline void __iomem *ioremap_prot(phys_addr_t offset, * _CACHE_UNCACHED option (see cpu_probe() method). */ #define ioremap_wc(offset, size) \ - __ioremap_mode((offset), (size), boot_cpu_data.writecombine) - -static inline void iounmap(const volatile void __iomem *addr) -{ - if (plat_iounmap(addr)) - return; - -#define __IS_KSEG1(addr) (((unsigned long)(addr) & ~0x1fffffffUL) == CKSEG1) - - if (cpu_has_64bit_addresses || - (__builtin_constant_p(addr) && __IS_KSEG1(addr))) - return; - - __iounmap(addr); - -#undef __IS_KSEG1 -} + ioremap_prot((offset), (size), boot_cpu_data.writecombine) #if defined(CONFIG_CPU_CAVIUM_OCTEON) || defined(CONFIG_CPU_LOONGSON64) #define war_io_reorder_wmb() wmb() |