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- This comparison shows the changes necessary to convert path
/or1k/tags/nog_patch_52/or1ksim/mmu
- from Rev 1429 to Rev 1765
- ↔ Reverse comparison
Rev 1429 → Rev 1765
/immu.c
0,0 → 1,325
/* immu.c -- Instruction MMU simulation |
Copyright (C) 1999 Damjan Lampret, lampret@opencores.org |
|
This file is part of OpenRISC 1000 Architectural Simulator. |
|
This program is free software; you can redistribute it and/or modify |
it under the terms of the GNU General Public License as published by |
the Free Software Foundation; either version 2 of the License, or |
(at your option) any later version. |
|
This program is distributed in the hope that it will be useful, |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
GNU General Public License for more details. |
|
You should have received a copy of the GNU General Public License |
along with this program; if not, write to the Free Software |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
|
/* IMMU model (not functional yet, currently just copy of data cache). */ |
|
#include "config.h" |
|
#ifdef HAVE_INTTYPES_H |
#include <inttypes.h> |
#endif |
|
#include "port.h" |
#include "arch.h" |
#include "immu.h" |
#include "abstract.h" |
#include "opcode/or32.h" |
#include "stats.h" |
#include "sprs.h" |
#include "except.h" |
#include "sim-config.h" |
#include "debug.h" |
|
DEFAULT_DEBUG_CHANNEL(immu); |
|
extern int cont_run; |
|
/* Insn MMU */ |
|
static inline oraddr_t immu_simulate_tlb(oraddr_t virtaddr) |
{ |
int set, way = -1; |
int i; |
oraddr_t tagaddr; |
oraddr_t vpn, ppn; |
|
if (!(mfspr(SPR_SR) & SPR_SR_IME) || !(testsprbits(SPR_UPR, SPR_UPR_IMP))) { |
insn_ci = (virtaddr >= 0x80000000); |
return virtaddr; |
} |
|
TRACE("IMMU enabled, checking mmu ways\n"); |
|
/* Which set to check out? */ |
set = (virtaddr / config.immu.pagesize) % config.immu.nsets; |
tagaddr = (virtaddr / config.immu.pagesize) / config.immu.nsets; |
vpn = virtaddr / (config.immu.pagesize * config.immu.nsets); |
|
/* Scan all ways and try to find a matching way. */ |
for (i = 0; i < config.immu.nways; i++) |
if (((mfspr(SPR_ITLBMR_BASE(i) + set) / (config.immu.pagesize * config.immu.nsets)) == vpn) && |
testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_V)) |
way = i; |
|
/* Did we find our tlb entry? */ |
if (way >= 0) { /* Yes, we did. */ |
immu_stats.fetch_tlbhit++; |
TRACE("ITLB hit (virtaddr=%"PRIxADDR").\n", virtaddr); |
|
/* Set LRUs */ |
for (i = 0; i < config.immu.nways; i++) |
if (testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU)) |
setsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU, getsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU) - 1); |
setsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_LRU, config.immu.nsets - 1); |
|
/* Check if page is cache inhibited */ |
insn_ci = (mfspr(SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_CI) == SPR_ITLBTR_CI; |
|
runtime.sim.mem_cycles += config.immu.hitdelay; |
|
/* Test for page fault */ |
if (mfspr (SPR_SR) & SPR_SR_SM) { |
if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_SXE)) |
except_handle(EXCEPT_IPF, virtaddr); |
} else { |
if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_UXE)) |
except_handle(EXCEPT_IPF, virtaddr); |
} |
|
ppn = mfspr(SPR_ITLBTR_BASE(way) + set) / config.immu.pagesize; |
return (ppn * config.immu.pagesize) + (virtaddr % config.immu.pagesize); |
} |
else { /* No, we didn't. */ |
immu_stats.fetch_tlbmiss++; |
#if 0 |
for (i = 0; i < config.immu.nways; i++) |
if (getsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU) < minlru) |
minway = i; |
|
setsprbits(SPR_ITLBMR_BASE(minway) + set, SPR_ITLBMR_VPN, vpn); |
for (i = 0; i < config.immu.nways; i++) |
if (testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU)) |
setsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU, getsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_LRU) - 1); |
setsprbits(SPR_ITLBMR_BASE(minway) + set, SPR_ITLBMR_LRU, config.immu.ustates - 1); |
setsprbits(SPR_ITLBTR_BASE(minway) + set, SPR_ITLBTR_PPN, vpn); /* 1 to 1 */ |
setsprbits(SPR_ITLBMR_BASE(minway) + set, SPR_ITLBMR_V, 1); |
#endif |
|
/* if tlb refill implemented in HW */ |
/* return getsprbits(SPR_ITLBTR_BASE(minway) + set, SPR_ITLBTR_PPN) * config.immu.pagesize + (virtaddr % config.immu.pagesize); */ |
runtime.sim.mem_cycles += config.immu.missdelay; |
|
except_handle(EXCEPT_ITLBMISS, virtaddr); |
return 0; |
} |
} |
|
/* DESC: try to find EA -> PA transaltion without changing |
* any of precessor states. if this is not passible gives up |
* (without triggering exceptions) |
* |
* PRMS: virtaddr - EA for which to find translation |
* |
* RTRN: 0 - no IMMU, IMMU disabled or ITLB miss |
* else - appropriate PA (note it IMMU is not present |
* PA === EA) |
*/ |
oraddr_t peek_into_itlb(oraddr_t virtaddr) |
{ |
int set, way = -1; |
int i; |
oraddr_t tagaddr; |
oraddr_t vpn, ppn; |
|
if (!(mfspr(SPR_SR) & SPR_SR_IME) || !(testsprbits(SPR_UPR, SPR_UPR_IMP))) { |
return(virtaddr); |
} |
|
/* Which set to check out? */ |
set = (virtaddr / config.immu.pagesize) % config.immu.nsets; |
tagaddr = (virtaddr / config.immu.pagesize) / config.immu.nsets; |
vpn = virtaddr / (config.immu.pagesize * config.immu.nsets); |
|
/* Scan all ways and try to find a matching way. */ |
for (i = 0; i < config.immu.nways; i++) |
if (((mfspr(SPR_ITLBMR_BASE(i) + set) / (config.immu.pagesize * config.immu.nsets)) == vpn) && |
testsprbits(SPR_ITLBMR_BASE(i) + set, SPR_ITLBMR_V)) |
way = i; |
|
/* Did we find our tlb entry? */ |
if (way >= 0) { /* Yes, we did. */ |
|
/* Test for page fault */ |
if (mfspr (SPR_SR) & SPR_SR_SM) { |
if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_SXE)) { |
/* no luck, giving up */ |
return(0); |
} |
} else { |
if (!(mfspr (SPR_ITLBTR_BASE(way) + set) & SPR_ITLBTR_UXE)) { |
/* no luck, giving up */ |
return(0); |
} |
} |
|
ppn = mfspr(SPR_ITLBTR_BASE(way) + set) / config.immu.pagesize; |
return (ppn * config.immu.pagesize) + (virtaddr % config.immu.pagesize); |
} |
else { |
return(0); |
} |
|
ERR("should never have happened\n"); |
return(0); |
} |
|
|
oraddr_t immu_translate(oraddr_t virtaddr) |
{ |
oraddr_t phyaddr = immu_simulate_tlb(virtaddr); |
|
/* PRINTF("IMMU translate(%x) = %x\n", virtaddr, phyaddr);*/ |
return phyaddr; |
} |
|
void itlb_info() |
{ |
if (!testsprbits(SPR_UPR, SPR_UPR_IMP)) { |
PRINTF("IMMU not implemented. Set UPR[IMP].\n"); |
return; |
} |
|
PRINTF("Insn MMU %dKB: ", config.immu.nsets * config.immu.entrysize * config.immu.nways / 1024); |
PRINTF("%d ways, %d sets, entry size %d bytes\n", config.immu.nways, config.immu.nsets, config.immu.entrysize); |
} |
|
/* First check if virtual address is covered by ITLB and if it is: |
- increment ITLB read hit stats, |
- set 'lru' at this way to config.immu.ustates - 1 and |
decrement 'lru' of other ways unless they have reached 0, |
- check page access attributes and invoke IMMU page fault exception |
handler if necessary |
and if not: |
- increment ITLB read miss stats |
- find lru way and entry and invoke ITLB miss exception handler |
- set 'lru' with config.immu.ustates - 1 and decrement 'lru' of other |
ways unless they have reached 0 |
*/ |
|
void itlb_status(int start_set) |
{ |
int set; |
int way; |
int end_set = config.immu.nsets; |
|
if (!testsprbits(SPR_UPR, SPR_UPR_IMP)) { |
PRINTF("IMMU not implemented. Set UPR[IMP].\n"); |
return; |
} |
|
if ((start_set >= 0) && (start_set < end_set)) |
end_set = start_set + 1; |
else |
start_set = 0; |
|
if (start_set < end_set) PRINTF("\nIMMU: "); |
/* Scan set(s) and way(s). */ |
for (set = start_set; set < end_set; set++) { |
PRINTF("\nSet %x: ", set); |
for (way = 0; way < config.immu.nways; way++) { |
PRINTF(" way %d: ", way); |
PRINTF("vpn=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_VPN)); |
PRINTF("lru=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_LRU)); |
PRINTF("pl1=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_PL1)); |
PRINTF("v=%lx ", getsprbits(SPR_ITLBMR_BASE(way) + set, SPR_ITLBMR_V)); |
|
PRINTF("a=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_A)); |
PRINTF("d=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_D)); |
PRINTF("uxe=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_UXE)); |
PRINTF("sxe=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_SXE)); |
PRINTF("ppn=%lx ", getsprbits(SPR_ITLBTR_BASE(way) + set, SPR_ITLBTR_PPN)); |
} |
} |
if (start_set < end_set) PRINTF("\n"); |
} |
|
/*---------------------------------------------------[ IMMU configuration ]---*/ |
void immu_enabled(union param_val val, void *dat) |
{ |
setsprbits (SPR_UPR, SPR_UPR_IMP, val.int_val ? 1 : 0); |
config.immu.enabled = val.int_val; |
} |
|
void immu_nsets(union param_val val, void *dat) |
{ |
if (is_power2(val.int_val) && val.int_val <= 256) { |
config.immu.nsets = val.int_val; |
setsprbits (SPR_IMMUCFGR, SPR_IMMUCFGR_NTS, log2(val.int_val)); |
} |
else |
CONFIG_ERROR("value of power of two and lower or equal than 256 expected."); |
} |
|
void immu_nways(union param_val val, void *dat) |
{ |
if (val.int_val >= 1 && val.int_val <= 4) { |
config.immu.nways = val.int_val; |
setsprbits (SPR_DMMUCFGR, SPR_DMMUCFGR_NTW, val.int_val-1); |
} |
else |
CONFIG_ERROR("value 1, 2, 3 or 4 expected."); |
} |
|
void immu_pagesize(union param_val val, void *dat) |
{ |
if (is_power2(val.int_val)) |
config.immu.pagesize = val.int_val; |
else |
CONFIG_ERROR("value of power of two expected."); |
} |
|
void immu_entrysize(union param_val val, void *dat) |
{ |
if (is_power2(val.int_val)) |
config.immu.entrysize = val.int_val; |
else |
CONFIG_ERROR("value of power of two expected."); |
} |
|
void immu_ustates(union param_val val, void *dat) |
{ |
if (val.int_val >= 2 && val.int_val <= 4) |
config.immu.ustates = val.int_val; |
else |
CONFIG_ERROR("invalid USTATE."); |
} |
|
void immu_missdelay(union param_val val, void *dat) |
{ |
config.immu.missdelay = val.int_val; |
} |
|
void immu_hitdelay(union param_val val, void *dat) |
{ |
config.immu.hitdelay = val.int_val; |
} |
|
void reg_immu_sec(void) |
{ |
struct config_section *sec = reg_config_sec("immu", NULL, NULL); |
|
reg_config_param(sec, "enabled", paramt_int, immu_enabled); |
reg_config_param(sec, "nsets", paramt_int, immu_nsets); |
reg_config_param(sec, "nways", paramt_int, immu_nways); |
reg_config_param(sec, "pagesize", paramt_int, immu_pagesize); |
reg_config_param(sec, "entrysize", paramt_int, immu_entrysize); |
reg_config_param(sec, "ustates", paramt_int, immu_ustates); |
reg_config_param(sec, "missdelay", paramt_int, immu_missdelay); |
reg_config_param(sec, "hitdelay", paramt_int, immu_hitdelay); |
} |
/dmmu.c
0,0 → 1,348
/* dmmu.c -- Data MMU simulation |
Copyright (C) 1999 Damjan Lampret, lampret@opencores.org |
|
This file is part of OpenRISC 1000 Architectural Simulator. |
|
This program is free software; you can redistribute it and/or modify |
it under the terms of the GNU General Public License as published by |
the Free Software Foundation; either version 2 of the License, or |
(at your option) any later version. |
|
This program is distributed in the hope that it will be useful, |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
GNU General Public License for more details. |
|
You should have received a copy of the GNU General Public License |
along with this program; if not, write to the Free Software |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
|
/* DMMU model (not functional yet, currently just copy of data cache). */ |
|
#include "config.h" |
|
#ifdef HAVE_INTTYPES_H |
#include <inttypes.h> |
#endif |
|
#include "port.h" |
#include "arch.h" |
#include "dmmu.h" |
#include "abstract.h" |
#include "opcode/or32.h" |
#include "stats.h" |
#include "sprs.h" |
#include "except.h" |
#include "sim-config.h" |
#include "debug.h" |
|
DEFAULT_DEBUG_CHANNEL(dmmu); |
|
extern int cont_run; |
|
/* Data MMU */ |
|
inline oraddr_t dmmu_simulate_tlb(oraddr_t virtaddr, int write_access) |
{ |
int set, way = -1; |
int i; |
oraddr_t tagaddr; |
oraddr_t vpn, ppn; |
|
if (!(mfspr(SPR_SR) & SPR_SR_DME) || !testsprbits(SPR_UPR, SPR_UPR_DMP)) { |
data_ci = (virtaddr >= 0x80000000); |
return virtaddr; |
} |
|
/* Which set to check out? */ |
set = (virtaddr / config.dmmu.pagesize) % config.dmmu.nsets; |
tagaddr = (virtaddr / config.dmmu.pagesize) / config.dmmu.nsets; |
vpn = virtaddr / (config.dmmu.pagesize * config.dmmu.nsets); |
|
/* Scan all ways and try to find a matching way. */ |
for (i = 0; i < config.dmmu.nways; i++) |
if (((mfspr(SPR_DTLBMR_BASE(i) + set) / (config.dmmu.pagesize * config.dmmu.nsets)) == vpn) && |
testsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_V)) |
way = i; |
|
/* Did we find our tlb entry? */ |
if (way >= 0) { /* Yes, we did. */ |
dmmu_stats.loads_tlbhit++; |
TRACE("DTLB hit (virtaddr=%"PRIxADDR") at %lli.\n", virtaddr, |
runtime.sim.cycles); |
|
/* Set LRUs */ |
for (i = 0; i < config.dmmu.nways; i++) |
if (testsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU)) |
setsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU, getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU) - 1); |
setsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_LRU, config.dmmu.nsets - 1); |
|
/* Check if page is cache inhibited */ |
data_ci = (mfspr(SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_CI) == SPR_DTLBTR_CI; |
|
runtime.sim.mem_cycles += config.dmmu.hitdelay; |
ppn = mfspr(SPR_DTLBTR_BASE(way) + set) / config.dmmu.pagesize; |
|
/* Test for page fault */ |
if (mfspr (SPR_SR) & SPR_SR_SM) { |
if ( write_access && !(mfspr (SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_SWE) |
|| !write_access && !(mfspr (SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_SRE)) |
except_handle(EXCEPT_DPF, virtaddr); |
} else { |
if ( write_access && !(mfspr (SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_UWE) |
|| !write_access && !(mfspr (SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_URE)) |
except_handle(EXCEPT_DPF, virtaddr); |
} |
|
return (ppn * config.dmmu.pagesize) + (virtaddr % config.dmmu.pagesize); |
} |
else { /* No, we didn't. */ |
dmmu_stats.loads_tlbmiss++; |
#if 0 |
for (i = 0; i < config.dmmu.nways; i++) |
if (getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU) < minlru) |
minway = i; |
|
setsprbits(SPR_DTLBMR_BASE(minway) + set, SPR_DTLBMR_VPN, vpn); |
for (i = 0; i < config.dmmu.nways; i++) |
if (getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU)) |
setsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU, getsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_LRU) - 1); |
setsprbits(SPR_DTLBMR_BASE(minway) + set, SPR_DTLBMR_LRU, config.dmmu.ustates - 1); |
setsprbits(SPR_DTLBTR_BASE(minway) + set, SPR_DTLBTR_PPN, vpn); /* 1 to 1 */ |
setsprbits(SPR_DTLBMR_BASE(minway) + set, SPR_DTLBMR_V, 1); |
#endif |
TRACE("DTLB miss (virtaddr=%"PRIxADDR") at %lli.\n", virtaddr, |
runtime.sim.cycles); |
runtime.sim.mem_cycles += config.dmmu.missdelay; |
/* if tlb refill implemented in HW */ |
/* return getsprbits(SPR_DTLBTR_BASE(minway) + set, SPR_DTLBTR_PPN) * config.dmmu.pagesize + (virtaddr % config.dmmu.pagesize); */ |
except_handle(EXCEPT_DTLBMISS, virtaddr); |
return 0; |
} |
} |
|
/* DESC: try to find EA -> PA transaltion without changing |
* any of precessor states. if this is not passible gives up |
* (without triggering exceptions) |
* |
* PRMS: virtaddr - EA for which to find translation |
* |
* write_access - 0 ignore testing for write access |
* 1 test for write access, if fails |
* do not return translation |
* |
* through_dc - 1 go through data cache |
* 0 ignore data cache |
* |
* RTRN: 0 - no DMMU, DMMU disabled or ITLB miss |
* else - appropriate PA (note it DMMU is not present |
* PA === EA) |
*/ |
oraddr_t peek_into_dtlb(oraddr_t virtaddr, int write_access, int through_dc) |
{ |
int set, way = -1; |
int i; |
oraddr_t tagaddr; |
oraddr_t vpn, ppn; |
|
if (!(mfspr(SPR_SR) & SPR_SR_DME) || !testsprbits(SPR_UPR, SPR_UPR_DMP)) { |
if (through_dc) |
data_ci = (virtaddr >= 0x80000000); |
return virtaddr; |
} |
|
/* Which set to check out? */ |
set = (virtaddr / config.dmmu.pagesize) % config.dmmu.nsets; |
tagaddr = (virtaddr / config.dmmu.pagesize) / config.dmmu.nsets; |
vpn = virtaddr / (config.dmmu.pagesize * config.dmmu.nsets); |
|
/* Scan all ways and try to find a matching way. */ |
for (i = 0; i < config.dmmu.nways; i++) |
if (((mfspr(SPR_DTLBMR_BASE(i) + set) / (config.dmmu.pagesize * config.dmmu.nsets)) == vpn) && |
testsprbits(SPR_DTLBMR_BASE(i) + set, SPR_DTLBMR_V)) |
way = i; |
|
/* Did we find our tlb entry? */ |
if (way >= 0) { /* Yes, we did. */ |
dmmu_stats.loads_tlbhit++; |
TRACE("DTLB hit (virtaddr=%"PRIxADDR") at %lli.\n", virtaddr, |
runtime.sim.cycles); |
|
/* Test for page fault */ |
if (mfspr (SPR_SR) & SPR_SR_SM) { |
if ( write_access && !(mfspr (SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_SWE) |
|| !write_access && !(mfspr (SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_SRE)) |
|
/* otherwise exception DPF would be raised */ |
return(0); |
} else { |
if ( write_access && !(mfspr (SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_UWE) |
|| !write_access && !(mfspr (SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_URE)) |
|
/* otherwise exception DPF would be raised */ |
return(0); |
} |
|
if (through_dc) { |
/* Check if page is cache inhibited */ |
data_ci = (mfspr(SPR_DTLBTR_BASE(way) + set) & SPR_DTLBTR_CI) == SPR_DTLBTR_CI; |
} |
|
ppn = mfspr(SPR_DTLBTR_BASE(way) + set) / config.dmmu.pagesize; |
return (ppn * config.dmmu.pagesize) + (virtaddr % config.dmmu.pagesize); |
} |
else { /* No, we didn't. */ |
return(0); |
} |
|
ERR("ERR, should never have happened\n"); |
return(0); |
} |
|
|
oraddr_t dmmu_translate(oraddr_t virtaddr, int write_access) |
{ |
oraddr_t phyaddr = dmmu_simulate_tlb(virtaddr, write_access); |
|
/* PRINTF("DMMU translate(%"PRIxADDR") = %"PRIxADDR"\n", virtaddr, phyaddr);*/ |
return phyaddr; |
} |
|
|
void dtlb_info() |
{ |
if (!testsprbits(SPR_UPR, SPR_UPR_DMP)) { |
PRINTF("DMMU not implemented. Set UPR[DMP].\n"); |
return; |
} |
|
PRINTF("Data MMU %dKB: ", config.dmmu.nsets * config.dmmu.entrysize * config.dmmu.nways / 1024); |
PRINTF("%d ways, %d sets, entry size %d bytes\n", config.dmmu.nways, config.dmmu.nsets, config.dmmu.entrysize); |
} |
|
/* First check if virtual address is covered by DTLB and if it is: |
- increment DTLB read hit stats, |
- set 'lru' at this way to config.dmmu.ustates - 1 and |
decrement 'lru' of other ways unless they have reached 0, |
- check page access attributes and invoke DMMU page fault exception |
handler if necessary |
and if not: |
- increment DTLB read miss stats |
- find lru way and entry and invoke DTLB miss exception handler |
- set 'lru' with config.dmmu.ustates - 1 and decrement 'lru' of other |
ways unless they have reached 0 |
*/ |
|
void dtlb_status(int start_set) |
{ |
int set; |
int way; |
int end_set = config.dmmu.nsets; |
|
if (!testsprbits(SPR_UPR, SPR_UPR_DMP)) { |
PRINTF("DMMU not implemented. Set UPR[DMP].\n"); |
return; |
} |
|
if ((start_set >= 0) && (start_set < end_set)) |
end_set = start_set + 1; |
else |
start_set = 0; |
|
if (start_set < end_set) PRINTF("\nDMMU: "); |
/* Scan set(s) and way(s). */ |
for (set = start_set; set < end_set; set++) { |
PRINTF("\nSet %x: ", set); |
for (way = 0; way < config.dmmu.nways; way++) { |
PRINTF(" way %d: ", way); |
PRINTF("vpn=%lx ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_VPN)); |
PRINTF("lru=%lx ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_LRU)); |
PRINTF("pl1=%lx ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_PL1)); |
PRINTF("v=%lx ", getsprbits(SPR_DTLBMR_BASE(way) + set, SPR_DTLBMR_V)); |
|
PRINTF("a=%lx ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_A)); |
PRINTF("d=%lx ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_D)); |
PRINTF("ure=%lx ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_URE)); |
PRINTF("uwe=%lx ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_UWE)); |
PRINTF("sre=%lx ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_SRE)); |
PRINTF("swe=%lx ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_SWE)); |
PRINTF("ppn=%lx ", getsprbits(SPR_DTLBTR_BASE(way) + set, SPR_DTLBTR_PPN)); |
} |
} |
if (start_set < end_set) PRINTF("\n"); |
} |
|
/*---------------------------------------------------[ DMMU configuration ]---*/ |
void dmmu_enabled(union param_val val, void *dat) |
{ |
setsprbits (SPR_UPR, SPR_UPR_DMP, val.int_val ? 1 : 0); |
config.dmmu.enabled = val.int_val; |
} |
|
void dmmu_nsets(union param_val val, void *dat) |
{ |
if (is_power2(val.int_val) && val.int_val <= 256) { |
config.dmmu.nsets = val.int_val; |
setsprbits (SPR_DMMUCFGR, SPR_DMMUCFGR_NTS, log2(val.int_val)); |
} |
else |
CONFIG_ERROR("value of power of two and lower or equal than 256 expected."); |
} |
|
void dmmu_nways(union param_val val, void *dat) |
{ |
if (val.int_val >= 1 && val.int_val <= 4) { |
config.dmmu.nways = val.int_val; |
setsprbits (SPR_DMMUCFGR, SPR_DMMUCFGR_NTW, val.int_val-1); |
} |
else |
CONFIG_ERROR("value 1, 2, 3 or 4 expected."); |
} |
|
void dmmu_pagesize(union param_val val, void *dat) |
{ |
if (is_power2(val.int_val)) |
config.dmmu.pagesize = val.int_val; |
else |
CONFIG_ERROR("value of power of two expected."); |
} |
|
void dmmu_entrysize(union param_val val, void *dat) |
{ |
if (is_power2(val.int_val)) |
config.dmmu.entrysize = val.int_val; |
else |
CONFIG_ERROR("value of power of two expected."); |
} |
|
void dmmu_ustates(union param_val val, void *dat) |
{ |
if (val.int_val >= 2 && val.int_val <= 4) |
config.dmmu.ustates = val.int_val; |
else |
CONFIG_ERROR("invalid USTATE."); |
} |
|
void dmmu_missdelay(union param_val val, void *dat) |
{ |
config.dmmu.missdelay = val.int_val; |
} |
|
void dmmu_hitdelay(union param_val val, void *dat) |
{ |
config.immu.hitdelay = val.int_val; |
} |
|
void reg_dmmu_sec(void) |
{ |
struct config_section *sec = reg_config_sec("dmmu", NULL, NULL); |
|
reg_config_param(sec, "enabled", paramt_int, dmmu_enabled); |
reg_config_param(sec, "nsets", paramt_int, dmmu_nsets); |
reg_config_param(sec, "nways", paramt_int, dmmu_nways); |
reg_config_param(sec, "pagesize", paramt_int, dmmu_pagesize); |
reg_config_param(sec, "entrysize", paramt_int, dmmu_entrysize); |
reg_config_param(sec, "ustates", paramt_int, dmmu_ustates); |
reg_config_param(sec, "missdelay", paramt_int, dmmu_missdelay); |
reg_config_param(sec, "hitdelay", paramt_int, dmmu_hitdelay); |
} |
/Makefile.in
0,0 → 1,332
# Makefile.in generated by automake 1.6.3 from Makefile.am. |
# @configure_input@ |
|
# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
# Free Software Foundation, Inc. |
# This Makefile.in is free software; the Free Software Foundation |
# gives unlimited permission to copy and/or distribute it, |
# with or without modifications, as long as this notice is preserved. |
|
# This program is distributed in the hope that it will be useful, |
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without |
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A |
# PARTICULAR PURPOSE. |
|
@SET_MAKE@ |
|
# Makefile -- Makefile for cpu architecture independent simulation |
# Copyright (C) 1999 Damjan Lampret, lampret@opencores.org |
# |
# This file is part of OpenRISC 1000 Architectural Simulator. |
# |
# This program is free software; you can redistribute it and/or modify |
# it under the terms of the GNU General Public License as published by |
# the Free Software Foundation; either version 2 of the License, or |
# (at your option) any later version. |
# |
# This program is distributed in the hope that it will be useful, |
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
# GNU General Public License for more details. |
# |
# You should have received a copy of the GNU General Public License |
# along with this program; if not, write to the Free Software |
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
# |
SHELL = @SHELL@ |
|
srcdir = @srcdir@ |
top_srcdir = @top_srcdir@ |
VPATH = @srcdir@ |
prefix = @prefix@ |
exec_prefix = @exec_prefix@ |
|
bindir = @bindir@ |
sbindir = @sbindir@ |
libexecdir = @libexecdir@ |
datadir = @datadir@ |
sysconfdir = @sysconfdir@ |
sharedstatedir = @sharedstatedir@ |
localstatedir = @localstatedir@ |
libdir = @libdir@ |
infodir = @infodir@ |
mandir = @mandir@ |
includedir = @includedir@ |
oldincludedir = /usr/include |
pkgdatadir = $(datadir)/@PACKAGE@ |
pkglibdir = $(libdir)/@PACKAGE@ |
pkgincludedir = $(includedir)/@PACKAGE@ |
top_builddir = .. |
|
ACLOCAL = @ACLOCAL@ |
AUTOCONF = @AUTOCONF@ |
AUTOMAKE = @AUTOMAKE@ |
AUTOHEADER = @AUTOHEADER@ |
|
am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd |
INSTALL = @INSTALL@ |
INSTALL_PROGRAM = @INSTALL_PROGRAM@ |
INSTALL_DATA = @INSTALL_DATA@ |
install_sh_DATA = $(install_sh) -c -m 644 |
install_sh_PROGRAM = $(install_sh) -c |
install_sh_SCRIPT = $(install_sh) -c |
INSTALL_SCRIPT = @INSTALL_SCRIPT@ |
INSTALL_HEADER = $(INSTALL_DATA) |
transform = @program_transform_name@ |
NORMAL_INSTALL = : |
PRE_INSTALL = : |
POST_INSTALL = : |
NORMAL_UNINSTALL = : |
PRE_UNINSTALL = : |
POST_UNINSTALL = : |
build_alias = @build_alias@ |
build_triplet = @build@ |
host_alias = @host_alias@ |
host_triplet = @host@ |
target_alias = @target_alias@ |
target_triplet = @target@ |
|
EXEEXT = @EXEEXT@ |
OBJEXT = @OBJEXT@ |
PATH_SEPARATOR = @PATH_SEPARATOR@ |
AMTAR = @AMTAR@ |
AR = @AR@ |
ARFLAGS = @ARFLAGS@ |
AWK = @AWK@ |
BUILD_DIR = @BUILD_DIR@ |
CC = @CC@ |
CFLAGS = @CFLAGS@ |
CPU_ARCH = @CPU_ARCH@ |
DEPDIR = @DEPDIR@ |
INCLUDES = @INCLUDES@ |
INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@ |
LOCAL_CFLAGS = @LOCAL_CFLAGS@ |
LOCAL_DEFS = @LOCAL_DEFS@ |
MAKE_SHELL = @MAKE_SHELL@ |
PACKAGE = @PACKAGE@ |
RANLIB = @RANLIB@ |
STRIP = @STRIP@ |
SUMVERSION = @SUMVERSION@ |
TERMCAP_LIB = @TERMCAP_LIB@ |
VERSION = @VERSION@ |
am__include = @am__include@ |
am__quote = @am__quote@ |
host = @host@ |
host_cpu = @host_cpu@ |
host_os = @host_os@ |
install_sh = @install_sh@ |
|
noinst_LIBRARIES = libmmu.a |
libmmu_a_SOURCES = dmmu.c immu.c |
subdir = mmu |
mkinstalldirs = $(SHELL) $(top_srcdir)/mkinstalldirs |
CONFIG_HEADER = $(top_builddir)/config.h |
CONFIG_CLEAN_FILES = |
LIBRARIES = $(noinst_LIBRARIES) |
|
libmmu_a_AR = $(AR) cru |
libmmu_a_LIBADD = |
am_libmmu_a_OBJECTS = dmmu.$(OBJEXT) immu.$(OBJEXT) |
libmmu_a_OBJECTS = $(am_libmmu_a_OBJECTS) |
|
DEFS = @DEFS@ |
DEFAULT_INCLUDES = -I. -I$(srcdir) -I$(top_builddir) |
CPPFLAGS = @CPPFLAGS@ |
LDFLAGS = @LDFLAGS@ |
LIBS = @LIBS@ |
depcomp = $(SHELL) $(top_srcdir)/depcomp |
am__depfiles_maybe = depfiles |
@AMDEP_TRUE@DEP_FILES = ./$(DEPDIR)/dmmu.Po ./$(DEPDIR)/immu.Po |
COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \ |
$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) |
CCLD = $(CC) |
LINK = $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) $(LDFLAGS) -o $@ |
DIST_SOURCES = $(libmmu_a_SOURCES) |
DIST_COMMON = Makefile.am Makefile.in |
SOURCES = $(libmmu_a_SOURCES) |
|
all: all-am |
|
.SUFFIXES: |
.SUFFIXES: .c .o .obj |
$(srcdir)/Makefile.in: Makefile.am $(top_srcdir)/configure.in $(ACLOCAL_M4) |
cd $(top_srcdir) && \ |
$(AUTOMAKE) --gnu mmu/Makefile |
Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status |
cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe) |
|
clean-noinstLIBRARIES: |
-test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES) |
libmmu.a: $(libmmu_a_OBJECTS) $(libmmu_a_DEPENDENCIES) |
-rm -f libmmu.a |
$(libmmu_a_AR) libmmu.a $(libmmu_a_OBJECTS) $(libmmu_a_LIBADD) |
$(RANLIB) libmmu.a |
|
mostlyclean-compile: |
-rm -f *.$(OBJEXT) core *.core |
|
distclean-compile: |
-rm -f *.tab.c |
|
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/dmmu.Po@am__quote@ |
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/immu.Po@am__quote@ |
|
distclean-depend: |
-rm -rf ./$(DEPDIR) |
|
.c.o: |
@AMDEP_TRUE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@ |
@AMDEP_TRUE@ depfile='$(DEPDIR)/$*.Po' tmpdepfile='$(DEPDIR)/$*.TPo' @AMDEPBACKSLASH@ |
@AMDEP_TRUE@ $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@ |
$(COMPILE) -c `test -f '$<' || echo '$(srcdir)/'`$< |
|
.c.obj: |
@AMDEP_TRUE@ source='$<' object='$@' libtool=no @AMDEPBACKSLASH@ |
@AMDEP_TRUE@ depfile='$(DEPDIR)/$*.Po' tmpdepfile='$(DEPDIR)/$*.TPo' @AMDEPBACKSLASH@ |
@AMDEP_TRUE@ $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@ |
$(COMPILE) -c `cygpath -w $<` |
CCDEPMODE = @CCDEPMODE@ |
uninstall-info-am: |
|
ETAGS = etags |
ETAGSFLAGS = |
|
tags: TAGS |
|
ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES) |
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \ |
unique=`for i in $$list; do \ |
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \ |
done | \ |
$(AWK) ' { files[$$0] = 1; } \ |
END { for (i in files) print i; }'`; \ |
mkid -fID $$unique |
|
TAGS: $(HEADERS) $(SOURCES) $(TAGS_DEPENDENCIES) \ |
$(TAGS_FILES) $(LISP) |
tags=; \ |
here=`pwd`; \ |
list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \ |
unique=`for i in $$list; do \ |
if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \ |
done | \ |
$(AWK) ' { files[$$0] = 1; } \ |
END { for (i in files) print i; }'`; \ |
test -z "$(ETAGS_ARGS)$$tags$$unique" \ |
|| $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \ |
$$tags $$unique |
|
GTAGS: |
here=`$(am__cd) $(top_builddir) && pwd` \ |
&& cd $(top_srcdir) \ |
&& gtags -i $(GTAGS_ARGS) $$here |
|
distclean-tags: |
-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH |
DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST) |
|
top_distdir = .. |
distdir = $(top_distdir)/$(PACKAGE)-$(VERSION) |
|
distdir: $(DISTFILES) |
@list='$(DISTFILES)'; for file in $$list; do \ |
if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \ |
dir=`echo "$$file" | sed -e 's,/[^/]*$$,,'`; \ |
if test "$$dir" != "$$file" && test "$$dir" != "."; then \ |
dir="/$$dir"; \ |
$(mkinstalldirs) "$(distdir)$$dir"; \ |
else \ |
dir=''; \ |
fi; \ |
if test -d $$d/$$file; then \ |
if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \ |
cp -pR $(srcdir)/$$file $(distdir)$$dir || exit 1; \ |
fi; \ |
cp -pR $$d/$$file $(distdir)$$dir || exit 1; \ |
else \ |
test -f $(distdir)/$$file \ |
|| cp -p $$d/$$file $(distdir)/$$file \ |
|| exit 1; \ |
fi; \ |
done |
check-am: all-am |
check: check-am |
all-am: Makefile $(LIBRARIES) |
|
installdirs: |
|
install: install-am |
install-exec: install-exec-am |
install-data: install-data-am |
uninstall: uninstall-am |
|
install-am: all-am |
@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am |
|
installcheck: installcheck-am |
install-strip: |
$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \ |
INSTALL_STRIP_FLAG=-s \ |
`test -z '$(STRIP)' || \ |
echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install |
mostlyclean-generic: |
|
clean-generic: |
|
distclean-generic: |
-rm -f Makefile $(CONFIG_CLEAN_FILES) |
|
maintainer-clean-generic: |
@echo "This command is intended for maintainers to use" |
@echo "it deletes files that may require special tools to rebuild." |
clean: clean-am |
|
clean-am: clean-generic clean-noinstLIBRARIES mostlyclean-am |
|
distclean: distclean-am |
|
distclean-am: clean-am distclean-compile distclean-depend \ |
distclean-generic distclean-tags |
|
dvi: dvi-am |
|
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|
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|
info-am: |
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|
install-man: |
|
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mostlyclean: mostlyclean-am |
|
mostlyclean-am: mostlyclean-compile mostlyclean-generic |
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uninstall-am: uninstall-info-am |
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.PHONY: GTAGS all all-am check check-am clean clean-generic \ |
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dvi-am info info-am install install-am install-data \ |
install-data-am install-exec install-exec-am install-info \ |
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maintainer-clean-generic mostlyclean mostlyclean-compile \ |
mostlyclean-generic tags uninstall uninstall-am \ |
uninstall-info-am |
|
# Tell versions [3.59,3.63) of GNU make to not export all variables. |
# Otherwise a system limit (for SysV at least) may be exceeded. |
.NOEXPORT: |
/dmmu.h
0,0 → 1,23
/* dmmu.h -- Data MMU header file |
Copyright (C) 1999 Damjan Lampret, lampret@opencores.org |
|
This file is part of OpenRISC 1000 Architectural Simulator. |
|
This program is free software; you can redistribute it and/or modify |
it under the terms of the GNU General Public License as published by |
the Free Software Foundation; either version 2 of the License, or |
(at your option) any later version. |
|
This program is distributed in the hope that it will be useful, |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
GNU General Public License for more details. |
|
You should have received a copy of the GNU General Public License |
along with this program; if not, write to the Free Software |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
|
oraddr_t dmmu_translate(oraddr_t virtaddr, int write_access); |
oraddr_t dmmu_simulate_tlb(oraddr_t virtaddr, int write_access); |
oraddr_t peek_into_dtlb(oraddr_t virtaddr, int write_access, int through_dc); |
void dtlb_status(int start_set); |
/immu.h
0,0 → 1,23
/* immu.h -- Instruction MMU header file |
Copyright (C) 1999 Damjan Lampret, lampret@opencores.org |
|
This file is part of OpenRISC 1000 Architectural Simulator. |
|
This program is free software; you can redistribute it and/or modify |
it under the terms of the GNU General Public License as published by |
the Free Software Foundation; either version 2 of the License, or |
(at your option) any later version. |
|
This program is distributed in the hope that it will be useful, |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
GNU General Public License for more details. |
|
You should have received a copy of the GNU General Public License |
along with this program; if not, write to the Free Software |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
|
oraddr_t immu_translate(oraddr_t virtaddr); |
oraddr_t immu_simulate_tlb(oraddr_t virtaddr); |
oraddr_t peek_into_itlb(oraddr_t virtaddr); |
void itlb_status(int start_set); |
/Makefile.am
0,0 → 1,23
# Makefile -- Makefile for cpu architecture independent simulation |
# Copyright (C) 1999 Damjan Lampret, lampret@opencores.org |
# |
# This file is part of OpenRISC 1000 Architectural Simulator. |
# |
# This program is free software; you can redistribute it and/or modify |
# it under the terms of the GNU General Public License as published by |
# the Free Software Foundation; either version 2 of the License, or |
# (at your option) any later version. |
# |
# This program is distributed in the hope that it will be useful, |
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
# GNU General Public License for more details. |
# |
# You should have received a copy of the GNU General Public License |
# along with this program; if not, write to the Free Software |
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
# |
|
noinst_LIBRARIES = libmmu.a |
libmmu_a_SOURCES = dmmu.c immu.c |
|
.
Property changes :
Added: svn:ignore
## -0,0 +1,2 ##
+Makefile
+.deps