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Date: Fri, 15 May 2015 12:44:23 +0300
From: Cristian Stoica <cristian.stoica@...escale.com>
To: <benh@...nel.crashing.org>, <paulus@...ba.org>,
<mpe@...erman.id.au>, <kyle@...hat.com>,
<horia.geanta@...escale.com>
CC: <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
"Cristian Stoica" <cristian.stoica@...escale.com>
Subject: [PATCH v2] powerpc: support sizes greater than an unsigned long
Use resource_size_t to accommodate sizes greater than the size of an
unsigned long int on platforms that have more than 32 bit
physical addresses
Signed-off-by: Cristian Stoica <cristian.stoica@...escale.com>
Changes in v2:
- update definitions is pgtable_64.c as well - or else we get broken builds on 64
- minor reformatting in pgtable_64.c to satisfy checkpatch
---
arch/powerpc/include/asm/io.h | 14 +++++++-------
arch/powerpc/mm/pgtable_32.c | 10 +++++-----
arch/powerpc/mm/pgtable_64.c | 22 +++++++++++-----------
3 files changed, 23 insertions(+), 23 deletions(-)
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index a8d2ef3..749c66e 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -716,24 +716,24 @@ static inline void iosync(void)
* be hooked (but can be used by a hook on iounmap)
*
*/
-extern void __iomem *ioremap(phys_addr_t address, unsigned long size);
-extern void __iomem *ioremap_prot(phys_addr_t address, unsigned long size,
+extern void __iomem *ioremap(phys_addr_t address, resource_size_t size);
+extern void __iomem *ioremap_prot(phys_addr_t address, resource_size_t size,
unsigned long flags);
-extern void __iomem *ioremap_wc(phys_addr_t address, unsigned long size);
+extern void __iomem *ioremap_wc(phys_addr_t address, resource_size_t size);
#define ioremap_nocache(addr, size) ioremap((addr), (size))
extern void iounmap(volatile void __iomem *addr);
-extern void __iomem *__ioremap(phys_addr_t, unsigned long size,
+extern void __iomem *__ioremap(phys_addr_t, resource_size_t size,
unsigned long flags);
-extern void __iomem *__ioremap_caller(phys_addr_t, unsigned long size,
+extern void __iomem *__ioremap_caller(phys_addr_t, resource_size_t size,
unsigned long flags, void *caller);
extern void __iounmap(volatile void __iomem *addr);
extern void __iomem * __ioremap_at(phys_addr_t pa, void *ea,
- unsigned long size, unsigned long flags);
-extern void __iounmap_at(void *ea, unsigned long size);
+ resource_size_t size, unsigned long flags);
+extern void __iounmap_at(void *ea, resource_size_t size);
/*
* When CONFIG_PPC_INDIRECT_PIO is set, we use the generic iomap implementation
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 7692d1b..a7d5137 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -135,7 +135,7 @@ pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
}
void __iomem *
-ioremap(phys_addr_t addr, unsigned long size)
+ioremap(phys_addr_t addr, resource_size_t size)
{
return __ioremap_caller(addr, size, _PAGE_NO_CACHE | _PAGE_GUARDED,
__builtin_return_address(0));
@@ -143,7 +143,7 @@ ioremap(phys_addr_t addr, unsigned long size)
EXPORT_SYMBOL(ioremap);
void __iomem *
-ioremap_wc(phys_addr_t addr, unsigned long size)
+ioremap_wc(phys_addr_t addr, resource_size_t size)
{
return __ioremap_caller(addr, size, _PAGE_NO_CACHE,
__builtin_return_address(0));
@@ -151,7 +151,7 @@ ioremap_wc(phys_addr_t addr, unsigned long size)
EXPORT_SYMBOL(ioremap_wc);
void __iomem *
-ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags)
+ioremap_prot(phys_addr_t addr, resource_size_t size, unsigned long flags)
{
/* writeable implies dirty for kernel addresses */
if ((flags & (_PAGE_RW | _PAGE_RO)) != _PAGE_RO)
@@ -173,13 +173,13 @@ ioremap_prot(phys_addr_t addr, unsigned long size, unsigned long flags)
EXPORT_SYMBOL(ioremap_prot);
void __iomem *
-__ioremap(phys_addr_t addr, unsigned long size, unsigned long flags)
+__ioremap(phys_addr_t addr, resource_size_t size, unsigned long flags)
{
return __ioremap_caller(addr, size, flags, __builtin_return_address(0));
}
void __iomem *
-__ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags,
+__ioremap_caller(phys_addr_t addr, resource_size_t size, unsigned long flags,
void *caller)
{
unsigned long v, i;
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 59daa5e..64dd7a9 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -168,8 +168,8 @@ int map_kernel_page(unsigned long ea, unsigned long pa, int flags)
* __ioremap_at - Low level function to establish the page tables
* for an IO mapping
*/
-void __iomem * __ioremap_at(phys_addr_t pa, void *ea, unsigned long size,
- unsigned long flags)
+void __iomem *__ioremap_at(phys_addr_t pa, void *ea, resource_size_t size,
+ unsigned long flags)
{
unsigned long i;
@@ -202,7 +202,7 @@ void __iomem * __ioremap_at(phys_addr_t pa, void *ea, unsigned long size,
* are manipulated manually, like partial unmapping of
* PCI IOs or ISA space.
*/
-void __iounmap_at(void *ea, unsigned long size)
+void __iounmap_at(void *ea, resource_size_t size)
{
WARN_ON(((unsigned long)ea) & ~PAGE_MASK);
WARN_ON(size & ~PAGE_MASK);
@@ -210,8 +210,8 @@ void __iounmap_at(void *ea, unsigned long size)
unmap_kernel_range((unsigned long)ea, size);
}
-void __iomem * __ioremap_caller(phys_addr_t addr, unsigned long size,
- unsigned long flags, void *caller)
+void __iomem *__ioremap_caller(phys_addr_t addr, resource_size_t size,
+ unsigned long flags, void *caller)
{
phys_addr_t paligned;
void __iomem *ret;
@@ -255,13 +255,13 @@ void __iomem * __ioremap_caller(phys_addr_t addr, unsigned long size,
return ret;
}
-void __iomem * __ioremap(phys_addr_t addr, unsigned long size,
- unsigned long flags)
+void __iomem *__ioremap(phys_addr_t addr, resource_size_t size,
+ unsigned long flags)
{
return __ioremap_caller(addr, size, flags, __builtin_return_address(0));
}
-void __iomem * ioremap(phys_addr_t addr, unsigned long size)
+void __iomem *ioremap(phys_addr_t addr, resource_size_t size)
{
unsigned long flags = _PAGE_NO_CACHE | _PAGE_GUARDED;
void *caller = __builtin_return_address(0);
@@ -271,7 +271,7 @@ void __iomem * ioremap(phys_addr_t addr, unsigned long size)
return __ioremap_caller(addr, size, flags, caller);
}
-void __iomem * ioremap_wc(phys_addr_t addr, unsigned long size)
+void __iomem *ioremap_wc(phys_addr_t addr, resource_size_t size)
{
unsigned long flags = _PAGE_NO_CACHE;
void *caller = __builtin_return_address(0);
@@ -281,8 +281,8 @@ void __iomem * ioremap_wc(phys_addr_t addr, unsigned long size)
return __ioremap_caller(addr, size, flags, caller);
}
-void __iomem * ioremap_prot(phys_addr_t addr, unsigned long size,
- unsigned long flags)
+void __iomem *ioremap_prot(phys_addr_t addr, resource_size_t size,
+ unsigned long flags)
{
void *caller = __builtin_return_address(0);
--
2.3.5
--
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