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[MIPS] page.h: remove __pa() usages. 

__pa() was used by virt_to_page() and virt_addr_valid(). These
latter are used when kernel is initialised so __pa() is not
appropriate, we use virt_to_phys() instead.

Futhermore __pa() is going to take care of CKSEG0/XKPHYS
address mix for 64 bit kernels. This makes __pa() more complex
than virt_to_phys() and this extra work is not needed by
virt_to_page() and virt_addr_valid().

Eventually it consolidates virt_to_phys() prototype by making
its argument 'const'. this avoids some warnings that was due
to some virt_to_page() usages which pass const pointer.

Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Franck Bui-Huu 2006-10-19 13:19:59 +02:00 committed by Ralf Baechle
parent 0215ffb08c
commit 99e3b942c6
4 changed files with 10 additions and 8 deletions
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8
arch/mips/mm/init.c
View File

@ -90,9 +90,9 @@ unsigned long setup_zero_pages(void)
if (!empty_zero_page)
panic("Oh boy, that early out of memory?");
page = virt_to_page(empty_zero_page);
page = virt_to_page((void *)empty_zero_page);
split_page(page, order);
while (page < virt_to_page(empty_zero_page + (PAGE_SIZE << order))) {
while (page < virt_to_page((void *)(empty_zero_page + (PAGE_SIZE << order)))) {
SetPageReserved(page);
page++;
}
@ -448,8 +448,8 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
unsigned long addr;
for (addr = begin; addr < end; addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
init_page_count(virt_to_page(addr));
ClearPageReserved(virt_to_page((void *)addr));
init_page_count(virt_to_page((void *)addr));
memset((void *)addr, 0xcc, PAGE_SIZE);
free_page(addr);
totalram_pages++;

2
include/asm-mips/io.h
View File

@ -113,7 +113,7 @@ static inline void set_io_port_base(unsigned long base)
* almost all conceivable cases a device driver should not be using
* this function
*/
static inline unsigned long virt_to_phys(volatile void * address)
static inline unsigned long virt_to_phys(volatile const void *address)
{
return (unsigned long)address - PAGE_OFFSET;
}

6
include/asm-mips/page.h
View File

@ -34,7 +34,9 @@
#ifndef __ASSEMBLY__
#include <linux/pfn.h>
#include <asm/cpu-features.h>
#include <asm/io.h>
extern void clear_page(void * page);
extern void copy_page(void * to, void * from);
@ -160,8 +162,8 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#endif
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define virt_to_page(kaddr) pfn_to_page(PFN_DOWN(virt_to_phys(kaddr)))
#define virt_addr_valid(kaddr) pfn_valid(PFN_DOWN(virt_to_phys(kaddr)))
#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)

2
include/asm-mips/pgtable.h
View File

@ -67,7 +67,7 @@ extern unsigned long empty_zero_page;
extern unsigned long zero_page_mask;
#define ZERO_PAGE(vaddr) \
(virt_to_page(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask)))
(virt_to_page((void *)(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask))))
#define __HAVE_ARCH_MOVE_PTE
#define move_pte(pte, prot, old_addr, new_addr) \