diff options
Diffstat (limited to 'include/linux/io.h')
| -rw-r--r-- | include/linux/io.h | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/include/linux/io.h b/include/linux/io.h index 235ba7d80a8f..0642c7ee41db 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -6,19 +6,23 @@ #ifndef _LINUX_IO_H #define _LINUX_IO_H +#include <linux/sizes.h> #include <linux/types.h> #include <linux/init.h> -#include <linux/bug.h> -#include <linux/err.h> #include <asm/io.h> #include <asm/page.h> struct device; -struct resource; -__visible void __iowrite32_copy(void __iomem *to, const void *from, size_t count); +#ifndef __iowrite32_copy +void __iowrite32_copy(void __iomem *to, const void *from, size_t count); +#endif + void __ioread32_copy(void *to, const void __iomem *from, size_t count); + +#ifndef __iowrite64_copy void __iowrite64_copy(void __iomem *to, const void *from, size_t count); +#endif #ifdef CONFIG_MMU int ioremap_page_range(unsigned long addr, unsigned long end, @@ -58,8 +62,6 @@ static inline void devm_ioport_unmap(struct device *dev, void __iomem *addr) } #endif -#define IOMEM_ERR_PTR(err) (__force void __iomem *)ERR_PTR(err) - void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, resource_size_t size); void __iomem *devm_ioremap_uc(struct device *dev, resource_size_t offset, @@ -181,4 +183,25 @@ static inline void arch_io_free_memtype_wc(resource_size_t base, int devm_arch_io_reserve_memtype_wc(struct device *dev, resource_size_t start, resource_size_t size); +#ifdef CONFIG_STRICT_DEVMEM +static inline int range_is_allowed(unsigned long pfn, unsigned long size) +{ + u64 from = ((u64)pfn) << PAGE_SHIFT; + u64 to = from + size; + u64 cursor = from; + + while (cursor < to) { + if (!devmem_is_allowed(pfn)) + return 0; + cursor += PAGE_SIZE; + pfn++; + } + return 1; +} +#else +static inline int range_is_allowed(unsigned long pfn, unsigned long size) +{ + return 1; +} +#endif #endif /* _LINUX_IO_H */ |