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https://opencores.org/ocsvn/or1k/or1k/trunk
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- This comparison shows the changes necessary to convert path
/or1k/tags/nog_patch_49/or1ksim/tick
- from Rev 1423 to Rev 1765
- ↔ Reverse comparison
Rev 1423 → Rev 1765
/tick.h
0,0 → 1,30
/* tick.h -- Definition of types and structures for openrisc 1000 tick timer |
Copyright (C) 2000 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. */ |
|
/* Reset the tick counter */ |
void tick_reset(); |
|
/* Drives clock to tick counter */ |
inline void tick_clock(); |
|
/* Starts the tick timer. This function is called by a write to ttcr spr register */ |
void spr_write_ttcr (uorreg_t value); |
void spr_write_ttmr (uorreg_t value); |
|
uorreg_t spr_read_ttcr (); |
/tick.c
0,0 → 1,146
/* tick.c -- Simulation of OpenRISC 1000 tick timer |
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. */ |
|
/* This is functional simulation of OpenRISC 1000 architectural |
tick timer. |
*/ |
|
#include <stdlib.h> |
#include <stdio.h> |
#include <string.h> |
|
#include "config.h" |
|
#ifdef HAVE_INTTYPES_H |
#include <inttypes.h> |
#endif |
|
#include "port.h" |
#include "arch.h" |
#include "abstract.h" |
#include "except.h" |
#include "tick.h" |
#include "spr_defs.h" |
#include "pic.h" |
#include "sprs.h" |
#include "sim-config.h" |
#include "sched.h" |
#include "debug.h" |
|
DEFAULT_DEBUG_CHANNEL(tick); |
|
/* When did the timer start to count */ |
int cycles_start = 0; |
|
/* TT Count Register */ |
unsigned long ttcr; |
|
/* TT Mode Register */ |
unsigned long ttmr; |
|
/* Reset. It initializes TTCR register. */ |
void tick_reset() |
{ |
if (config.sim.verbose) |
PRINTF("Resetting Tick Timer.\n"); |
mtspr(SPR_TTCR, 0); |
mtspr(SPR_TTMR, 0); |
} |
|
/* Job handler for tick timer */ |
void tick_job (void *param) |
{ |
int mode = (ttmr & SPR_TTMR_M) >> 30; |
TRACE("tick_job param: %i, mode: %i at %lli (%lli)\n", (int)param, mode, |
runtime.sim.cycles, runtime.cpu.instructions); |
switch (mode) { |
case 1: |
if (!param) { |
sprs[SPR_TTCR] = ttcr = 0; |
cycles_start = runtime.sim.cycles - ttcr; |
TRACE("Scheduleing timer job for %li\n", (ttmr & SPR_TTMR_PERIOD) - ttcr); |
SCHED_ADD(tick_job, (void *)0, (ttmr & SPR_TTMR_PERIOD) - ttcr); |
} |
case 2: |
if (ttmr & SPR_TTMR_IE) { |
setsprbits(SPR_TTMR, SPR_TTMR_IP, 1); |
/* be sure not to issue timer exception if an exception occured before it */ |
if ((mfspr(SPR_SR) & SPR_SR_TEE) == SPR_SR_TEE) |
except_handle(EXCEPT_TICK, mfspr(SPR_EEAR_BASE)); |
else |
/* If TEE is currently not set we have to pend tick exception |
by rescheduling. */ |
SCHED_ADD(tick_job, (void *)1, 1); |
} |
break; |
} |
} |
|
/* Starts the tick timer. This function is called by a write to ttcr spr register */ |
void spr_write_ttcr (uorreg_t value) |
{ |
unsigned mode = (ttmr & SPR_TTMR_M) >> 30; |
TRACE("set ttcr = %"PRIxREG"\n", value); |
ttcr = value; |
/* Remove previous if it exists */ |
TRACE("Removeing scheduled jobs\n"); |
SCHED_FIND_REMOVE(tick_job, (void *)0); |
SCHED_FIND_REMOVE(tick_job, (void *)1); |
if (mode == 1 || mode == 2) { |
TRACE("Scheduleing timer job for %li\n", (ttmr & SPR_TTMR_PERIOD) - ttcr); |
SCHED_ADD(tick_job, (void *)0, (ttmr & SPR_TTMR_PERIOD) - ttcr); |
cycles_start = runtime.sim.cycles - ttcr; |
} |
} |
|
void spr_write_ttmr (uorreg_t value) |
{ |
TRACE("set ttmr = %"PRIxREG"\n", value); |
ttmr = value; |
/* Handle the modes properly. */ |
switch((ttmr & SPR_TTMR_M) >> 30) { |
case 0: /* Timer is disabled */ |
TRACE("Removeing scheduled jobs\n"); |
SCHED_FIND_REMOVE(tick_job, (void *)0); |
SCHED_FIND_REMOVE(tick_job, (void *)1); |
break; |
case 1: /* Timer should auto restart */ |
sprs[SPR_TTCR] = ttcr = 0; |
cycles_start = runtime.sim.cycles; |
TRACE("Removeing scheduled jobs\n"); |
SCHED_FIND_REMOVE(tick_job, (void *)0); |
SCHED_FIND_REMOVE(tick_job, (void *)1); |
TRACE("Scheduleing timer job for %li\n", (ttmr & SPR_TTMR_PERIOD) - ttcr); |
SCHED_ADD(tick_job, (void *)0, (ttmr & SPR_TTMR_PERIOD) - ttcr); |
break; |
case 2: /* Stop the timer when match */ |
TRACE("Removeing scheduled jobs\n"); |
SCHED_FIND_REMOVE(tick_job, (void *)0); |
SCHED_FIND_REMOVE(tick_job, (void *)1); |
break; |
case 3: /* Timer keeps running -- do nothing*/ |
break; |
} |
} |
|
uorreg_t spr_read_ttcr (void) |
{ |
TRACE("read ttcr %lli\n", runtime.sim.cycles - cycles_start); |
return runtime.sim.cycles - cycles_start; |
} |
/Makefile.in
0,0 → 1,331
# 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 peripherals 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. |
# |
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|
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|
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|
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/Makefile.am
0,0 → 1,22
# Makefile -- Makefile for peripherals 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 = libtick.a |
libtick_a_SOURCES = tick.c |
.
Property changes :
Added: svn:ignore
## -0,0 +1,2 ##
+Makefile
+.deps