Contributors: 13
Author Tokens Token Proportion Commits Commit Proportion
Benjamin Herrenschmidt 132 35.11% 5 15.15%
Christophe Leroy 96 25.53% 11 33.33%
Paul Mackerras 57 15.16% 1 3.03%
Nicholas Piggin 37 9.84% 2 6.06%
Anton Blanchard 16 4.26% 2 6.06%
Andrew Morton 11 2.93% 3 9.09%
Olaf Hering 7 1.86% 1 3.03%
Linus Torvalds (pre-git) 7 1.86% 3 9.09%
Aneesh Kumar K.V 7 1.86% 1 3.03%
Dan J Williams 3 0.80% 1 3.03%
Thomas Gleixner 1 0.27% 1 3.03%
Linus Torvalds 1 0.27% 1 3.03%
Michael Ellerman 1 0.27% 1 3.03%
Total 376 33


// SPDX-License-Identifier: GPL-2.0-or-later

#include <linux/io.h>
#include <linux/slab.h>
#include <linux/mmzone.h>
#include <linux/vmalloc.h>
#include <asm/io-workarounds.h>

unsigned long ioremap_bot;
EXPORT_SYMBOL(ioremap_bot);

void __iomem *ioremap(phys_addr_t addr, unsigned long size)
{
	pgprot_t prot = pgprot_noncached(PAGE_KERNEL);
	void *caller = __builtin_return_address(0);

	if (iowa_is_active())
		return iowa_ioremap(addr, size, prot, caller);
	return __ioremap_caller(addr, size, prot, caller);
}
EXPORT_SYMBOL(ioremap);

void __iomem *ioremap_wc(phys_addr_t addr, unsigned long size)
{
	pgprot_t prot = pgprot_noncached_wc(PAGE_KERNEL);
	void *caller = __builtin_return_address(0);

	if (iowa_is_active())
		return iowa_ioremap(addr, size, prot, caller);
	return __ioremap_caller(addr, size, prot, caller);
}
EXPORT_SYMBOL(ioremap_wc);

void __iomem *ioremap_coherent(phys_addr_t addr, unsigned long size)
{
	pgprot_t prot = pgprot_cached(PAGE_KERNEL);
	void *caller = __builtin_return_address(0);

	if (iowa_is_active())
		return iowa_ioremap(addr, size, prot, caller);
	return __ioremap_caller(addr, size, prot, caller);
}

void __iomem *ioremap_prot(phys_addr_t addr, size_t size, unsigned long flags)
{
	pte_t pte = __pte(flags);
	void *caller = __builtin_return_address(0);

	/* writeable implies dirty for kernel addresses */
	if (pte_write(pte))
		pte = pte_mkdirty(pte);

	if (iowa_is_active())
		return iowa_ioremap(addr, size, pte_pgprot(pte), caller);
	return __ioremap_caller(addr, size, pte_pgprot(pte), caller);
}
EXPORT_SYMBOL(ioremap_prot);

int early_ioremap_range(unsigned long ea, phys_addr_t pa,
			unsigned long size, pgprot_t prot)
{
	unsigned long i;

	for (i = 0; i < size; i += PAGE_SIZE) {
		int err = map_kernel_page(ea + i, pa + i, pgprot_nx(prot));

		if (WARN_ON_ONCE(err))  /* Should clean up */
			return err;
	}

	return 0;
}