diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mm/copypage-fa.c')
-rw-r--r-- | ANDROID_3.4.5/arch/arm/mm/copypage-fa.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mm/copypage-fa.c b/ANDROID_3.4.5/arch/arm/mm/copypage-fa.c deleted file mode 100644 index d130a5ec..00000000 --- a/ANDROID_3.4.5/arch/arm/mm/copypage-fa.c +++ /dev/null @@ -1,86 +0,0 @@ -/* - * linux/arch/arm/lib/copypage-fa.S - * - * Copyright (C) 2005 Faraday Corp. - * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> - * - * Based on copypage-v4wb.S: - * Copyright (C) 1995-1999 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/init.h> -#include <linux/highmem.h> - -/* - * Faraday optimised copy_user_page - */ -static void __naked -fa_copy_user_page(void *kto, const void *kfrom) -{ - asm("\ - stmfd sp!, {r4, lr} @ 2\n\ - mov r2, %0 @ 1\n\ -1: ldmia r1!, {r3, r4, ip, lr} @ 4\n\ - stmia r0, {r3, r4, ip, lr} @ 4\n\ - mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\ - add r0, r0, #16 @ 1\n\ - ldmia r1!, {r3, r4, ip, lr} @ 4\n\ - stmia r0, {r3, r4, ip, lr} @ 4\n\ - mcr p15, 0, r0, c7, c14, 1 @ 1 clean and invalidate D line\n\ - add r0, r0, #16 @ 1\n\ - subs r2, r2, #1 @ 1\n\ - bne 1b @ 1\n\ - mcr p15, 0, r2, c7, c10, 4 @ 1 drain WB\n\ - ldmfd sp!, {r4, pc} @ 3" - : - : "I" (PAGE_SIZE / 32)); -} - -void fa_copy_user_highpage(struct page *to, struct page *from, - unsigned long vaddr, struct vm_area_struct *vma) -{ - void *kto, *kfrom; - - kto = kmap_atomic(to); - kfrom = kmap_atomic(from); - fa_copy_user_page(kto, kfrom); - kunmap_atomic(kfrom); - kunmap_atomic(kto); -} - -/* - * Faraday optimised clear_user_page - * - * Same story as above. - */ -void fa_clear_user_highpage(struct page *page, unsigned long vaddr) -{ - void *ptr, *kaddr = kmap_atomic(page); - asm volatile("\ - mov r1, %2 @ 1\n\ - mov r2, #0 @ 1\n\ - mov r3, #0 @ 1\n\ - mov ip, #0 @ 1\n\ - mov lr, #0 @ 1\n\ -1: stmia %0, {r2, r3, ip, lr} @ 4\n\ - mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\ - add %0, %0, #16 @ 1\n\ - stmia %0, {r2, r3, ip, lr} @ 4\n\ - mcr p15, 0, %0, c7, c14, 1 @ 1 clean and invalidate D line\n\ - add %0, %0, #16 @ 1\n\ - subs r1, r1, #1 @ 1\n\ - bne 1b @ 1\n\ - mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB" - : "=r" (ptr) - : "0" (kaddr), "I" (PAGE_SIZE / 32) - : "r1", "r2", "r3", "ip", "lr"); - kunmap_atomic(kaddr); -} - -struct cpu_user_fns fa_user_fns __initdata = { - .cpu_clear_user_highpage = fa_clear_user_highpage, - .cpu_copy_user_highpage = fa_copy_user_highpage, -}; |