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
/*
* ioremap implementation.
*
* Copyright (C) 2015 Cadence Design Systems Inc.
*/
#include <linux/io.h>
#include <linux/pgtable.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size,
unsigned long prot)
{
unsigned long pfn = __phys_to_pfn((phys_addr));
WARN_ON(pfn_valid(pfn));
return generic_ioremap_prot(phys_addr, size, __pgprot(prot));
}
EXPORT_SYMBOL(ioremap_prot);
void iounmap(volatile void __iomem *addr)
{
unsigned long va = (unsigned long) addr;
if ((va >= XCHAL_KIO_CACHED_VADDR &&
va - XCHAL_KIO_CACHED_VADDR < XCHAL_KIO_SIZE) ||
(va >= XCHAL_KIO_BYPASS_VADDR &&
va - XCHAL_KIO_BYPASS_VADDR < XCHAL_KIO_SIZE))
return;
generic_iounmap(addr);
}
EXPORT_SYMBOL(iounmap);
|
