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// SPDX-License-Identifier: GPL-2.0
#include <linux/types.h>
#include <linux/mmdebug.h>
#include <linux/mm.h>
#include <asm/page.h>
#include <asm/sections.h>
phys_addr_t __virt_to_phys(unsigned long x)
{
/*
* Boundary checking aginst the kernel linear mapping space.
*/
WARN(!is_linear_mapping(x) && !is_kernel_mapping(x),
"virt_to_phys used for non-linear address: %p (%pS)\n",
(void *)x, (void *)x);
return __va_to_pa_nodebug(x);
}
EXPORT_SYMBOL(__virt_to_phys);
phys_addr_t __phys_addr_symbol(unsigned long x)
{
unsigned long kernel_start = kernel_map.virt_addr;
unsigned long kernel_end = kernel_start + kernel_map.size;
/*
* Boundary checking aginst the kernel image mapping.
* __pa_symbol should only be used on kernel symbol addresses.
*/
VIRTUAL_BUG_ON(x < kernel_start || x > kernel_end);
return __va_to_pa_nodebug(x);
}
EXPORT_SYMBOL(__phys_addr_symbol);
phys_addr_t linear_mapping_va_to_pa(unsigned long x)
{
BUG_ON(!kernel_map.va_pa_offset);
return ((unsigned long)(x) - kernel_map.va_pa_offset);
}
EXPORT_SYMBOL(linear_mapping_va_to_pa);
void *linear_mapping_pa_to_va(unsigned long x)
{
BUG_ON(!kernel_map.va_pa_offset);
return ((void *)((unsigned long)(x) + kernel_map.va_pa_offset));
}
EXPORT_SYMBOL(linear_mapping_pa_to_va);
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