Commit 084fe6a0 authored by Chris Metcalf's avatar Chris Metcalf
Browse files

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: default avatarChris Metcalf <cmetcalf@tilera.com>
parent abe3265a

arch/tile/include/asm/fixmap.h

+0 −8
Original line number Diff line number Diff line
@@ -78,14 +78,6 @@ enum fixed_addresses { 
#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_BOOT_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)

#define FIXADDR_START		(FIXADDR_TOP + PAGE_SIZE - __FIXADDR_SIZE)

arch/tile/mm/init.c

+1 −4
Original line number Diff line number Diff line
@@ -777,10 +777,7 @@ void __init paging_init(void) 


	kernel_physical_mapping_init(pgd_base);



	/*

	 * Fixed mappings, only the page table structure has to be

	 * created - mappings will be set by set_fixmap():

	 */

	/* Fixed mappings, only the page table structure has to be created. */

	page_table_range_init(fix_to_virt(__end_of_fixed_addresses - 1),

			      FIXADDR_TOP, pgd_base);

arch/tile/mm/pgtable.c

+0 −49
Original line number Diff line number Diff line
@@ -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.

 *

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