tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * ioremap implementation.
4 *
5 * Copyright (C) 2015 Cadence Design Systems Inc.
6 */
7
8#include <linux/io.h>
9#include <linux/pgtable.h>
10#include <asm/cacheflush.h>
11#include <asm/io.h>
12
13void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size,
14 pgprot_t prot)
15{
16 unsigned long pfn = __phys_to_pfn((phys_addr));
17 WARN_ON(pfn_valid(pfn));
18
19 return generic_ioremap_prot(phys_addr, size, prot);
20}
21EXPORT_SYMBOL(ioremap_prot);
22
23void iounmap(volatile void __iomem *addr)
24{
25 unsigned long va = (unsigned long) addr;
26
27 if ((va >= XCHAL_KIO_CACHED_VADDR &&
28 va - XCHAL_KIO_CACHED_VADDR < XCHAL_KIO_SIZE) ||
29 (va >= XCHAL_KIO_BYPASS_VADDR &&
30 va - XCHAL_KIO_BYPASS_VADDR < XCHAL_KIO_SIZE))
31 return;
32
33 generic_iounmap(addr);
34}
35EXPORT_SYMBOL(iounmap);