1 files changed, 0 insertions, 135 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mm/copypage-xscale.c b/ANDROID_3.4.5/arch/arm/mm/copypage-xscale.c
deleted file mode 100644
index 0fb85025..00000000
--- a/ANDROID_3.4.5/arch/arm/mm/copypage-xscale.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- *  linux/arch/arm/lib/copypage-xscale.S
- *
- *  Copyright (C) 1995-2005 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.
- *
- * This handles the mini data cache, as found on SA11x0 and XScale
- * processors.  When we copy a user page page, we map it in such a way
- * that accesses to this page will not touch the main data cache, but
- * will be cached in the mini data cache.  This prevents us thrashing
- * the main data cache on page faults.
- */
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/highmem.h>
-
-#include <asm/pgtable.h>
-#include <asm/tlbflush.h>
-#include <asm/cacheflush.h>
-
-#include "mm.h"
-
-#define minicache_pgprot __pgprot(L_PTE_PRESENT | L_PTE_YOUNG | \
-				  L_PTE_MT_MINICACHE)
-
-static DEFINE_RAW_SPINLOCK(minicache_lock);
-
-/*
- * XScale mini-dcache optimised copy_user_highpage
- *
- * We flush the destination cache lines just before we write the data into the
- * corresponding address.  Since the Dcache is read-allocate, this removes the
- * Dcache aliasing issue.  The writes will be forwarded to the write buffer,
- * and merged as appropriate.
- */
-static void __naked
-mc_copy_user_page(void *from, void *to)
-{
-	/*
-	 * Strangely enough, best performance is achieved
-	 * when prefetching destination as well.  (NP)
-	 */
-	asm volatile(
-	"stmfd	sp!, {r4, r5, lr}		\n\
-	mov	lr, %2				\n\
-	pld	[r0, #0]			\n\
-	pld	[r0, #32]			\n\
-	pld	[r1, #0]			\n\
-	pld	[r1, #32]			\n\
-1:	pld	[r0, #64]			\n\
-	pld	[r0, #96]			\n\
-	pld	[r1, #64]			\n\
-	pld	[r1, #96]			\n\
-2:	ldrd	r2, [r0], #8			\n\
-	ldrd	r4, [r0], #8			\n\
-	mov	ip, r1				\n\
-	strd	r2, [r1], #8			\n\
-	ldrd	r2, [r0], #8			\n\
-	strd	r4, [r1], #8			\n\
-	ldrd	r4, [r0], #8			\n\
-	strd	r2, [r1], #8			\n\
-	strd	r4, [r1], #8			\n\
-	mcr	p15, 0, ip, c7, c10, 1		@ clean D line\n\
-	ldrd	r2, [r0], #8			\n\
-	mcr	p15, 0, ip, c7, c6, 1		@ invalidate D line\n\
-	ldrd	r4, [r0], #8			\n\
-	mov	ip, r1				\n\
-	strd	r2, [r1], #8			\n\
-	ldrd	r2, [r0], #8			\n\
-	strd	r4, [r1], #8			\n\
-	ldrd	r4, [r0], #8			\n\
-	strd	r2, [r1], #8			\n\
-	strd	r4, [r1], #8			\n\
-	mcr	p15, 0, ip, c7, c10, 1		@ clean D line\n\
-	subs	lr, lr, #1			\n\
-	mcr	p15, 0, ip, c7, c6, 1		@ invalidate D line\n\
-	bgt	1b				\n\
-	beq	2b				\n\
-	ldmfd	sp!, {r4, r5, pc}		"
-	:
-	: "r" (from), "r" (to), "I" (PAGE_SIZE / 64 - 1));
-}
-
-void xscale_mc_copy_user_highpage(struct page *to, struct page *from,
-	unsigned long vaddr, struct vm_area_struct *vma)
-{
-	void *kto = kmap_atomic(to);
-
-	if (!test_and_set_bit(PG_dcache_clean, &from->flags))
-		__flush_dcache_page(page_mapping(from), from);
-
-	raw_spin_lock(&minicache_lock);
-
-	set_top_pte(COPYPAGE_MINICACHE, mk_pte(from, minicache_pgprot));
-
-	mc_copy_user_page((void *)COPYPAGE_MINICACHE, kto);
-
-	raw_spin_unlock(&minicache_lock);
-
-	kunmap_atomic(kto);
-}
-
-/*
- * XScale optimised clear_user_page
- */
-void
-xscale_mc_clear_user_highpage(struct page *page, unsigned long vaddr)
-{
-	void *ptr, *kaddr = kmap_atomic(page);
-	asm volatile(
-	"mov	r1, %2				\n\
-	mov	r2, #0				\n\
-	mov	r3, #0				\n\
-1:	mov	ip, %0				\n\
-	strd	r2, [%0], #8			\n\
-	strd	r2, [%0], #8			\n\
-	strd	r2, [%0], #8			\n\
-	strd	r2, [%0], #8			\n\
-	mcr	p15, 0, ip, c7, c10, 1		@ clean D line\n\
-	subs	r1, r1, #1			\n\
-	mcr	p15, 0, ip, c7, c6, 1		@ invalidate D line\n\
-	bne	1b"
-	: "=r" (ptr)
-	: "0" (kaddr), "I" (PAGE_SIZE / 32)
-	: "r1", "r2", "r3", "ip");
-	kunmap_atomic(kaddr);
-}
-
-struct cpu_user_fns xscale_mc_user_fns __initdata = {
-	.cpu_clear_user_highpage = xscale_mc_clear_user_highpage,
-	.cpu_copy_user_highpage	= xscale_mc_copy_user_highpage,
-};