xref: /OK3568_Linux_fs/kernel/arch/arm64/mm/physaddr.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun #include <linux/bug.h>
3*4882a593Smuzhiyun #include <linux/export.h>
4*4882a593Smuzhiyun #include <linux/types.h>
5*4882a593Smuzhiyun #include <linux/mmdebug.h>
6*4882a593Smuzhiyun #include <linux/mm.h>
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #include <asm/memory.h>
9*4882a593Smuzhiyun 
__virt_to_phys(unsigned long x)10*4882a593Smuzhiyun phys_addr_t __virt_to_phys(unsigned long x)
11*4882a593Smuzhiyun {
12*4882a593Smuzhiyun 	WARN(!__is_lm_address(__tag_reset(x)),
13*4882a593Smuzhiyun 	     "virt_to_phys used for non-linear address: %pK (%pS)\n",
14*4882a593Smuzhiyun 	      (void *)x,
15*4882a593Smuzhiyun 	      (void *)x);
16*4882a593Smuzhiyun 
17*4882a593Smuzhiyun 	return __virt_to_phys_nodebug(x);
18*4882a593Smuzhiyun }
19*4882a593Smuzhiyun EXPORT_SYMBOL(__virt_to_phys);
20*4882a593Smuzhiyun 
__phys_addr_symbol(unsigned long x)21*4882a593Smuzhiyun phys_addr_t __phys_addr_symbol(unsigned long x)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun 	/*
24*4882a593Smuzhiyun 	 * This is bounds checking against the kernel image only.
25*4882a593Smuzhiyun 	 * __pa_symbol should only be used on kernel symbol addresses.
26*4882a593Smuzhiyun 	 */
27*4882a593Smuzhiyun 	VIRTUAL_BUG_ON(x < (unsigned long) KERNEL_START ||
28*4882a593Smuzhiyun 		       x > (unsigned long) KERNEL_END);
29*4882a593Smuzhiyun 	return __pa_symbol_nodebug(x);
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun EXPORT_SYMBOL(__phys_addr_symbol);
32