73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
// 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;
|
|
}
|