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Diffstat (limited to 'arch/arc/include/asm/tlb-mmu1.h')
-rw-r--r--arch/arc/include/asm/tlb-mmu1.h101
1 files changed, 0 insertions, 101 deletions
diff --git a/arch/arc/include/asm/tlb-mmu1.h b/arch/arc/include/asm/tlb-mmu1.h
deleted file mode 100644
index a3083b36f5f4..000000000000
--- a/arch/arc/include/asm/tlb-mmu1.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
- */
-
-#ifndef __ASM_TLB_MMU_V1_H__
-#define __ASM_TLB_MMU_V1_H__
-
-#include <asm/mmu.h>
-
-#if defined(__ASSEMBLY__) && (CONFIG_ARC_MMU_VER == 1)
-
-.macro TLB_WRITE_HEURISTICS
-
-#define JH_HACK1
-#undef JH_HACK2
-#undef JH_HACK3
-
-#ifdef JH_HACK3
-; Calculate set index for 2-way MMU
-; -avoiding use of GetIndex from MMU
-; and its unpleasant LFSR pseudo-random sequence
-;
-; r1 = TLBPD0 from TLB_RELOAD above
-;
-; -- jh_ex_way_set not cleared on startup
-; didn't want to change setup.c
-; hence extra instruction to clean
-;
-; -- should be in cache since in same line
-; as r0/r1 saves above
-;
-ld r0,[jh_ex_way_sel] ; victim pointer
-and r0,r0,1 ; clean
-xor.f r0,r0,1 ; flip
-st r0,[jh_ex_way_sel] ; store back
-asr r0,r1,12 ; get set # <<1, note bit 12=R=0
-or.nz r0,r0,1 ; set way bit
-and r0,r0,0xff ; clean
-sr r0,[ARC_REG_TLBINDEX]
-#endif
-
-#ifdef JH_HACK2
-; JH hack #2
-; Faster than hack #1 in non-thrash case, but hard-coded for 2-way MMU
-; Slower in thrash case (where it matters) because more code is executed
-; Inefficient due to two-register paradigm of this miss handler
-;
-/* r1 = data TLBPD0 at this point */
-lr r0,[eret] /* instruction address */
-xor r0,r0,r1 /* compare set # */
-and.f r0,r0,0x000fe000 /* 2-way MMU mask */
-bne 88f /* not in same set - no need to probe */
-
-lr r0,[eret] /* instruction address */
-and r0,r0,PAGE_MASK /* VPN of instruction address */
-; lr r1,[ARC_REG_TLBPD0] /* Data VPN+ASID - already in r1 from TLB_RELOAD*/
-and r1,r1,0xff /* Data ASID */
-or r0,r0,r1 /* Instruction address + Data ASID */
-
-lr r1,[ARC_REG_TLBPD0] /* save TLBPD0 containing data TLB*/
-sr r0,[ARC_REG_TLBPD0] /* write instruction address to TLBPD0 */
-sr TLBProbe, [ARC_REG_TLBCOMMAND] /* Look for instruction */
-lr r0,[ARC_REG_TLBINDEX] /* r0 = index where instruction is, if at all */
-sr r1,[ARC_REG_TLBPD0] /* restore TLBPD0 */
-
-xor r0,r0,1 /* flip bottom bit of data index */
-b.d 89f
-sr r0,[ARC_REG_TLBINDEX] /* and put it back */
-88:
-sr TLBGetIndex, [ARC_REG_TLBCOMMAND]
-89:
-#endif
-
-#ifdef JH_HACK1
-;
-; Always checks whether instruction will be kicked out by dtlb miss
-;
-mov_s r3, r1 ; save PD0 prepared by TLB_RELOAD in r3
-lr r0,[eret] /* instruction address */
-and r0,r0,PAGE_MASK /* VPN of instruction address */
-bmsk r1,r3,7 /* Data ASID, bits 7-0 */
-or_s r0,r0,r1 /* Instruction address + Data ASID */
-
-sr r0,[ARC_REG_TLBPD0] /* write instruction address to TLBPD0 */
-sr TLBProbe, [ARC_REG_TLBCOMMAND] /* Look for instruction */
-lr r0,[ARC_REG_TLBINDEX] /* r0 = index where instruction is, if at all */
-sr r3,[ARC_REG_TLBPD0] /* restore TLBPD0 */
-
-sr TLBGetIndex, [ARC_REG_TLBCOMMAND]
-lr r1,[ARC_REG_TLBINDEX] /* r1 = index where MMU wants to put data */
-cmp r0,r1 /* if no match on indices, go around */
-xor.eq r1,r1,1 /* flip bottom bit of data index */
-sr r1,[ARC_REG_TLBINDEX] /* and put it back */
-#endif
-
-.endm
-
-#endif
-
-#endif