blob: c5af103d4ad4687fd47a3bc5616159614bfd21ba (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
// SPDX-License-Identifier: GPL-2.0-only
#include <linux/mm.h>
#include <linux/io.h>
bool ioremap_allowed(phys_addr_t phys_addr, size_t size, unsigned long prot)
{
unsigned long last_addr = phys_addr + size - 1;
/* Don't allow outside PHYS_MASK */
if (last_addr & ~PHYS_MASK)
return false;
/* Don't allow RAM to be mapped. */
if (WARN_ON(pfn_is_map_memory(__phys_to_pfn(phys_addr))))
return false;
return true;
}
/*
* Must be called after early_fixmap_init
*/
void __init early_ioremap_init(void)
{
early_ioremap_setup();
}
bool arch_memremap_can_ram_remap(resource_size_t offset, size_t size,
unsigned long flags)
{
unsigned long pfn = PHYS_PFN(offset);
return pfn_is_map_memory(pfn);
}
|
