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author | Jeremy Fitzhardinge <jeremy@goop.org> | 2009-02-06 13:29:44 -0800 |
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committer | Jeremy Fitzhardinge <jeremy@goop.org> | 2009-02-06 13:29:44 -0800 |
commit | 976e8f677e42757e5586ea04a9ac8bb8ddaa037e (patch) | |
tree | addb2267fe1267f506117dac15e0bc1843bf72fe /arch/x86/include/asm/io_32.h | |
parent | 26c8e3179933c5c9071b16db76ab6de58a787d06 (diff) | |
download | op-kernel-dev-976e8f677e42757e5586ea04a9ac8bb8ddaa037e.zip op-kernel-dev-976e8f677e42757e5586ea04a9ac8bb8ddaa037e.tar.gz |
x86: asm/io.h: unify virt_to_phys/phys_to_virt
Impact: unify identical code
asm/io_32.h and _64.h has functionally identical definitions for
virt_to_phys, phys_to_virt, page_to_phys, and the isa_* variants, so
just unify them.
The only slightly functional change is using phys_addr_t for the
physical address argument and return val.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Diffstat (limited to 'arch/x86/include/asm/io_32.h')
-rw-r--r-- | arch/x86/include/asm/io_32.h | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/arch/x86/include/asm/io_32.h b/arch/x86/include/asm/io_32.h index d8e242e..2b687cb 100644 --- a/arch/x86/include/asm/io_32.h +++ b/arch/x86/include/asm/io_32.h @@ -54,47 +54,6 @@ #define xlate_dev_kmem_ptr(p) p /** - * virt_to_phys - map virtual addresses to physical - * @address: address to remap - * - * The returned physical address is the physical (CPU) mapping for - * the memory address given. It is only valid to use this function on - * addresses directly mapped or allocated via kmalloc. - * - * This function does not give bus mappings for DMA transfers. In - * almost all conceivable cases a device driver should not be using - * this function - */ - -static inline unsigned long virt_to_phys(volatile void *address) -{ - return __pa(address); -} - -/** - * phys_to_virt - map physical address to virtual - * @address: address to remap - * - * The returned virtual address is a current CPU mapping for - * the memory address given. It is only valid to use this function on - * addresses that have a kernel mapping - * - * This function does not handle bus mappings for DMA transfers. In - * almost all conceivable cases a device driver should not be using - * this function - */ - -static inline void *phys_to_virt(unsigned long address) -{ - return __va(address); -} - -/* - * Change "struct page" to physical address. - */ -#define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT) - -/** * ioremap - map bus memory into CPU space * @offset: bus address of the memory * @size: size of the resource to map @@ -123,22 +82,6 @@ static inline void __iomem *ioremap(resource_size_t offset, unsigned long size) extern void iounmap(volatile void __iomem *addr); -/* - * ISA I/O bus memory addresses are 1:1 with the physical address. - */ -#define isa_virt_to_bus virt_to_phys -#define isa_page_to_bus page_to_phys -#define isa_bus_to_virt phys_to_virt - -/* - * However PCI ones are not necessarily 1:1 and therefore these interfaces - * are forbidden in portable PCI drivers. - * - * Allow them on x86 for legacy drivers, though. - */ -#define virt_to_bus virt_to_phys -#define bus_to_virt phys_to_virt - static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count) { |