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tile: remove set/clear_fixmap APIs 

Nothing in the codebase was using them, and as written they took
"unsigned long" as the physical address rather than "phys_addr_t",
which is wrong on tilepro anyway.  Rather than fixing stale APIs,
just remove them; if there's ever demand for them on this platform,
we can put them back.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf 2013-08-09 16:17:03 -04:00
parent abe3265a6d
commit 084fe6a0f5
3 changed files with 1 additions and 61 deletions
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8
arch/tile/include/asm/fixmap.h
View File

@ -78,14 +78,6 @@ enum fixed_addresses {
#endif #endif
}; };
extern void __set_fixmap(enum fixed_addresses idx,
unsigned long phys, pgprot_t flags);
#define set_fixmap(idx, phys) \
__set_fixmap(idx, phys, PAGE_KERNEL)
#define clear_fixmap(idx) \
__set_fixmap(idx, 0, __pgprot(0))
#define __FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT) #define __FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
#define __FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT) #define __FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
#define FIXADDR_START (FIXADDR_TOP + PAGE_SIZE - __FIXADDR_SIZE) #define FIXADDR_START (FIXADDR_TOP + PAGE_SIZE - __FIXADDR_SIZE)

5
arch/tile/mm/init.c
View File

@ -777,10 +777,7 @@ void __init paging_init(void)
kernel_physical_mapping_init(pgd_base); kernel_physical_mapping_init(pgd_base);
/* /* Fixed mappings, only the page table structure has to be created. */
* Fixed mappings, only the page table structure has to be
* created - mappings will be set by set_fixmap():
*/
page_table_range_init(fix_to_virt(__end_of_fixed_addresses - 1), page_table_range_init(fix_to_virt(__end_of_fixed_addresses - 1),
FIXADDR_TOP, pgd_base); FIXADDR_TOP, pgd_base);

49
arch/tile/mm/pgtable.c
View File

@ -83,55 +83,6 @@ void show_mem(unsigned int filter)
} }
} }
/*
* Associate a virtual page frame with a given physical page frame
* and protection flags for that frame.
*/
static void set_pte_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags)
{
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
pgd = swapper_pg_dir + pgd_index(vaddr);
if (pgd_none(*pgd)) {
BUG();
return;
}
pud = pud_offset(pgd, vaddr);
if (pud_none(*pud)) {
BUG();
return;
}
pmd = pmd_offset(pud, vaddr);
if (pmd_none(*pmd)) {
BUG();
return;
}
pte = pte_offset_kernel(pmd, vaddr);
/* <pfn,flags> stored as-is, to permit clearing entries */
set_pte(pte, pfn_pte(pfn, flags));
/*
* It's enough to flush this one mapping.
* This appears conservative since it is only called
* from __set_fixmap.
*/
local_flush_tlb_page(NULL, vaddr, PAGE_SIZE);
}
void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t flags)
{
unsigned long address = __fix_to_virt(idx);
if (idx >= __end_of_fixed_addresses) {
BUG();
return;
}
set_pte_pfn(address, phys >> PAGE_SHIFT, flags);
}
/** /**
* shatter_huge_page() - ensure a given address is mapped by a small page. * shatter_huge_page() - ensure a given address is mapped by a small page.
* *