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41 lines
834 B
41 lines
834 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __VIRT_CONVERT__ |
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#define __VIRT_CONVERT__ |
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/* |
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* Macros used for converting between virtual and physical mappings. |
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*/ |
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#ifdef __KERNEL__ |
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#include <linux/compiler.h> |
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#include <linux/mmzone.h> |
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#include <asm/setup.h> |
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#include <asm/page.h> |
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/* |
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* Change virtual addresses to physical addresses and vv. |
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*/ |
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#define virt_to_phys virt_to_phys |
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static inline unsigned long virt_to_phys(void *address) |
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{ |
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return __pa(address); |
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} |
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#define phys_to_virt phys_to_virt |
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static inline void *phys_to_virt(unsigned long address) |
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{ |
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return __va(address); |
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} |
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/* Permanent address of a page. */ |
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#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) |
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/* |
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* IO bus memory addresses are 1:1 with the physical address, |
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*/ |
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#define virt_to_bus virt_to_phys |
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#define bus_to_virt phys_to_virt |
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#endif |
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#endif
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