diff options
Diffstat (limited to 'arch/mn10300/mm/tlb-mn10300.S')
| -rw-r--r-- | arch/mn10300/mm/tlb-mn10300.S | 220 |
1 files changed, 0 insertions, 220 deletions
diff --git a/arch/mn10300/mm/tlb-mn10300.S b/arch/mn10300/mm/tlb-mn10300.S deleted file mode 100644 index b9940177d81b..000000000000 --- a/arch/mn10300/mm/tlb-mn10300.S +++ /dev/null @@ -1,220 +0,0 @@ -############################################################################### -# -# TLB loading functions -# -# Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd. -# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. -# Modified by David Howells (dhowells@redhat.com) -# -# This program is free software; you can redistribute it and/or -# modify it under the terms of the GNU General Public Licence -# as published by the Free Software Foundation; either version -# 2 of the Licence, or (at your option) any later version. -# -############################################################################### -#include <linux/sys.h> -#include <linux/linkage.h> -#include <asm/smp.h> -#include <asm/intctl-regs.h> -#include <asm/frame.inc> -#include <asm/page.h> -#include <asm/pgtable.h> - -############################################################################### -# -# Instruction TLB Miss handler entry point -# -############################################################################### - .type itlb_miss,@function -ENTRY(itlb_miss) -#ifdef CONFIG_GDBSTUB - movm [d2,d3,a2],(sp) -#else - or EPSW_nAR,epsw # switch D0-D3 & A0-A3 to the alternate - # register bank - nop - nop - nop -#endif - -#if defined(CONFIG_ERRATUM_NEED_TO_RELOAD_MMUCTR) - mov (MMUCTR),d2 - mov d2,(MMUCTR) -#endif - - and ~EPSW_NMID,epsw - mov (IPTEU),d3 - mov (PTBR),a2 - mov d3,d2 - and 0xffc00000,d2 - lsr 20,d2 - mov (a2,d2),a2 # PTD *ptd = PGD[addr 31..22] - btst _PAGE_VALID,a2 - beq itlb_miss_fault # jump if doesn't point anywhere - - and ~(PAGE_SIZE-1),a2 - mov d3,d2 - and 0x003ff000,d2 - lsr 10,d2 - add d2,a2 - mov (a2),d2 # get pte from PTD[addr 21..12] - btst _PAGE_VALID,d2 - beq itlb_miss_fault # jump if doesn't point to a page - # (might be a swap id) -#if ((_PAGE_ACCESSED & 0xffffff00) == 0) - bset _PAGE_ACCESSED,(0,a2) -#elif ((_PAGE_ACCESSED & 0xffff00ff) == 0) - bset +(_PAGE_ACCESSED >> 8),(1,a2) -#else -#error "_PAGE_ACCESSED value is out of range" -#endif - and ~xPTEL2_UNUSED1,d2 -itlb_miss_set: - mov d2,(IPTEL2) # change the TLB -#ifdef CONFIG_GDBSTUB - movm (sp),[d2,d3,a2] -#endif - rti - -itlb_miss_fault: - mov _PAGE_VALID,d2 # force address error handler to be - # invoked - bra itlb_miss_set - - .size itlb_miss, . - itlb_miss - -############################################################################### -# -# Data TLB Miss handler entry point -# -############################################################################### - .type dtlb_miss,@function -ENTRY(dtlb_miss) -#ifdef CONFIG_GDBSTUB - movm [d2,d3,a2],(sp) -#else - or EPSW_nAR,epsw # switch D0-D3 & A0-A3 to the alternate - # register bank - nop - nop - nop -#endif - -#if defined(CONFIG_ERRATUM_NEED_TO_RELOAD_MMUCTR) - mov (MMUCTR),d2 - mov d2,(MMUCTR) -#endif - - and ~EPSW_NMID,epsw - mov (DPTEU),d3 - mov (PTBR),a2 - mov d3,d2 - and 0xffc00000,d2 - lsr 20,d2 - mov (a2,d2),a2 # PTD *ptd = PGD[addr 31..22] - btst _PAGE_VALID,a2 - beq dtlb_miss_fault # jump if doesn't point anywhere - - and ~(PAGE_SIZE-1),a2 - mov d3,d2 - and 0x003ff000,d2 - lsr 10,d2 - add d2,a2 - mov (a2),d2 # get pte from PTD[addr 21..12] - btst _PAGE_VALID,d2 - beq dtlb_miss_fault # jump if doesn't point to a page - # (might be a swap id) -#if ((_PAGE_ACCESSED & 0xffffff00) == 0) - bset _PAGE_ACCESSED,(0,a2) -#elif ((_PAGE_ACCESSED & 0xffff00ff) == 0) - bset +(_PAGE_ACCESSED >> 8),(1,a2) -#else -#error "_PAGE_ACCESSED value is out of range" -#endif - and ~xPTEL2_UNUSED1,d2 -dtlb_miss_set: - mov d2,(DPTEL2) # change the TLB -#ifdef CONFIG_GDBSTUB - movm (sp),[d2,d3,a2] -#endif - rti - -dtlb_miss_fault: - mov _PAGE_VALID,d2 # force address error handler to be - # invoked - bra dtlb_miss_set - .size dtlb_miss, . - dtlb_miss - -############################################################################### -# -# Instruction TLB Address Error handler entry point -# -############################################################################### - .type itlb_aerror,@function -ENTRY(itlb_aerror) - add -4,sp - SAVE_ALL - -#if defined(CONFIG_ERRATUM_NEED_TO_RELOAD_MMUCTR) - mov (MMUCTR),d1 - mov d1,(MMUCTR) -#endif - - and ~EPSW_NMID,epsw - add -4,sp # need to pass three params - - # calculate the fault code - movhu (MMUFCR_IFC),d1 - or 0x00010000,d1 # it's an instruction fetch - - # determine the page address - mov (IPTEU),d0 - and PAGE_MASK,d0 - mov d0,(12,sp) - - clr d0 - mov d0,(IPTEL2) - - or EPSW_IE,epsw - mov fp,d0 - call do_page_fault[],0 # do_page_fault(regs,code,addr - - jmp ret_from_exception - .size itlb_aerror, . - itlb_aerror - -############################################################################### -# -# Data TLB Address Error handler entry point -# -############################################################################### - .type dtlb_aerror,@function -ENTRY(dtlb_aerror) - add -4,sp - SAVE_ALL - -#if defined(CONFIG_ERRATUM_NEED_TO_RELOAD_MMUCTR) - mov (MMUCTR),d1 - mov d1,(MMUCTR) -#endif - - add -4,sp # need to pass three params - and ~EPSW_NMID,epsw - - # calculate the fault code - movhu (MMUFCR_DFC),d1 - - # determine the page address - mov (DPTEU),a2 - mov a2,d0 - and PAGE_MASK,d0 - mov d0,(12,sp) - - clr d0 - mov d0,(DPTEL2) - - or EPSW_IE,epsw - mov fp,d0 - call do_page_fault[],0 # do_page_fault(regs,code,addr - - jmp ret_from_exception - .size dtlb_aerror, . - dtlb_aerror |