https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 39403865d2e4590802553370a56c9ab93131e4ee authored by Linus Torvalds on 13 May 2007, 01:45:56 UTC
Linux 2.6.22-rc1
Linux 2.6.22-rc1
Tip revision: 3940386
virtconvert.h
#ifndef __VIRT_CONVERT__
#define __VIRT_CONVERT__
/*
* Macros used for converting between virtual and physical mappings.
*/
#ifdef __KERNEL__
#include <linux/compiler.h>
#include <asm/setup.h>
#include <asm/page.h>
#ifdef CONFIG_AMIGA
#include <asm/amigahw.h>
#endif
/*
* Change virtual addresses to physical addresses and vv.
*/
#ifndef CONFIG_SUN3
extern unsigned long mm_vtop(unsigned long addr) __attribute_const__;
extern unsigned long mm_ptov(unsigned long addr) __attribute_const__;
#else
static inline unsigned long mm_vtop(unsigned long vaddr)
{
return __pa(vaddr);
}
static inline unsigned long mm_ptov(unsigned long paddr)
{
return (unsigned long)__va(paddr);
}
#endif
#ifdef CONFIG_SINGLE_MEMORY_CHUNK
static inline unsigned long virt_to_phys(void *vaddr)
{
return (unsigned long)vaddr - PAGE_OFFSET + m68k_memory[0].addr;
}
static inline void * phys_to_virt(unsigned long paddr)
{
return (void *)(paddr - m68k_memory[0].addr + PAGE_OFFSET);
}
#else
static inline unsigned long virt_to_phys(void *address)
{
return mm_vtop((unsigned long)address);
}
static inline void *phys_to_virt(unsigned long address)
{
return (void *) mm_ptov(address);
}
#endif
/* Permanent address of a page. */
#define __page_address(page) (PAGE_OFFSET + (((page) - mem_map) << PAGE_SHIFT))
#define page_to_phys(page) virt_to_phys((void *)__page_address(page))
/*
* IO bus memory addresses are 1:1 with the physical address,
* except on the PCI bus of the Hades.
*/
#ifdef CONFIG_HADES
#define virt_to_bus(a) (virt_to_phys(a) + (MACH_IS_HADES ? 0x80000000 : 0))
#define bus_to_virt(a) (phys_to_virt((a) - (MACH_IS_HADES ? 0x80000000 : 0)))
#else
#define virt_to_bus virt_to_phys
#define bus_to_virt phys_to_virt
#endif
#endif
#endif