/* * Miscellaneous low-level MMU functions. * * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu> * Copyright (C) 2008-2009 PetaLogix * Copyright (C) 2007 Xilinx, Inc.  All rights reserved. * * Derived from arch/ppc/kernel/misc.S * * 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/linkage.h>#include <linux/sys.h>#include <asm/unistd.h>#include <linux/errno.h>#include <asm/mmu.h>#include <asm/page.h> 	.text/* * Flush MMU TLB * * We avoid flushing the pinned 0, 1 and possibly 2 entries. */.globl _tlbia;.type  _tlbia, @function.align 4;_tlbia:	lwi	r12, r0, tlb_skip;	/* isync */_tlbia_1:	mts	rtlbx, r12	nop	mts	rtlbhi, r0 /* flush: ensure V is clear */	nop	rsubi	r11, r12, MICROBLAZE_TLB_SIZE - 1	bneid	r11, _tlbia_1 /* loop for all entries */	addik	r12, r12, 1	mbar	1 /* sync */	rtsd	r15, 8	nop	.size  _tlbia, . - _tlbia /* * Flush MMU TLB for a particular address (in r5) */.globl _tlbie;.type  _tlbie, @function.align 4;_tlbie:	mts	rtlbsx, r5 /* look up the address in TLB */	nop	mfs	r12, rtlbx /* Retrieve index */	nop	blti	r12, _tlbie_1 /* Check if found */	mts	rtlbhi, r0 /* flush: ensure V is clear */	nop	mbar	1 /* sync */_tlbie_1:	rtsd	r15, 8	nop 	.size  _tlbie, . - _tlbie