diff options
Diffstat (limited to 'arch/sh/mm/pg-sh7705.c')
-rw-r--r-- | arch/sh/mm/pg-sh7705.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/arch/sh/mm/pg-sh7705.c b/arch/sh/mm/pg-sh7705.c deleted file mode 100644 index eaf2514..0000000 --- a/arch/sh/mm/pg-sh7705.c +++ /dev/null @@ -1,138 +0,0 @@ -/* - * arch/sh/mm/pg-sh7705.c - * - * Copyright (C) 1999, 2000 Niibe Yutaka - * Copyright (C) 2004 Alex Song - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - */ - -#include <linux/init.h> -#include <linux/mman.h> -#include <linux/mm.h> -#include <linux/threads.h> -#include <linux/fs.h> -#include <asm/addrspace.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/processor.h> -#include <asm/cache.h> -#include <asm/io.h> -#include <asm/uaccess.h> -#include <asm/pgalloc.h> -#include <asm/mmu_context.h> -#include <asm/cacheflush.h> - -static inline void __flush_purge_virtual_region(void *p1, void *virt, int size) -{ - unsigned long v; - unsigned long begin, end; - unsigned long p1_begin; - - - begin = L1_CACHE_ALIGN((unsigned long)virt); - end = L1_CACHE_ALIGN((unsigned long)virt + size); - - p1_begin = (unsigned long)p1 & ~(L1_CACHE_BYTES - 1); - - /* do this the slow way as we may not have TLB entries - * for virt yet. */ - for (v = begin; v < end; v += L1_CACHE_BYTES) { - unsigned long p; - unsigned long ways, addr; - - p = __pa(p1_begin); - - ways = current_cpu_data.dcache.ways; - addr = CACHE_OC_ADDRESS_ARRAY; - - do { - unsigned long data; - - addr |= (v & current_cpu_data.dcache.entry_mask); - - data = ctrl_inl(addr); - if ((data & CACHE_PHYSADDR_MASK) == - (p & CACHE_PHYSADDR_MASK)) { - data &= ~(SH_CACHE_UPDATED|SH_CACHE_VALID); - ctrl_outl(data, addr); - } - - addr += current_cpu_data.dcache.way_incr; - } while (--ways); - - p1_begin += L1_CACHE_BYTES; - } -} - -/* - * clear_user_page - * @to: P1 address - * @address: U0 address to be mapped - */ -void clear_user_page(void *to, unsigned long address, struct page *pg) -{ - struct page *page = virt_to_page(to); - - __set_bit(PG_mapped, &page->flags); - if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) { - clear_page(to); - __flush_wback_region(to, PAGE_SIZE); - } else { - __flush_purge_virtual_region(to, - (void *)(address & 0xfffff000), - PAGE_SIZE); - clear_page(to); - __flush_wback_region(to, PAGE_SIZE); - } -} - -/* - * copy_user_page - * @to: P1 address - * @from: P1 address - * @address: U0 address to be mapped - */ -void copy_user_page(void *to, void *from, unsigned long address, struct page *pg) -{ - struct page *page = virt_to_page(to); - - - __set_bit(PG_mapped, &page->flags); - if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) { - copy_page(to, from); - __flush_wback_region(to, PAGE_SIZE); - } else { - __flush_purge_virtual_region(to, - (void *)(address & 0xfffff000), - PAGE_SIZE); - copy_page(to, from); - __flush_wback_region(to, PAGE_SIZE); - } -} - -/* - * For SH7705, we have our own implementation for ptep_get_and_clear - * Copied from pg-sh4.c - */ -pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) -{ - pte_t pte = *ptep; - - pte_clear(mm, addr, ptep); - if (!pte_not_present(pte)) { - unsigned long pfn = pte_pfn(pte); - if (pfn_valid(pfn)) { - struct page *page = pfn_to_page(pfn); - struct address_space *mapping = page_mapping(page); - if (!mapping || !mapping_writably_mapped(mapping)) - __clear_bit(PG_mapped, &page->flags); - } - } - - return pte; -} - |