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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667/* * 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