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Submit FS#11253. Rework of test_mem plugin to bench DRAM and IRAM. Also add ARM assembler and change the result format.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25918 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann 2010-05-09 19:23:26 +00:00
parent e8c72b6891
commit 70daf4ed4d
1 changed files with 121 additions and 40 deletions
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161
apps/plugins/test_mem.c
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@ -7,7 +7,7 @@
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2010 Thomas Martitz
* Copyright (C) 2010 Thomas Martitz, Andree Buschmann
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -23,12 +23,111 @@
PLUGIN_HEADER
#define BUF_SIZE ((PLUGIN_BUFFER_SIZE-(10<<10)) / (sizeof(int)))
#define LOOP_REPEAT 8
static volatile int buf[BUF_SIZE];
#define BUF_SIZE (1<<13) /* 32 KB = (1<<13)*sizeof(int) */
#define LOOP_REPEAT_DRAM 256
static volatile int buf_dram[BUF_SIZE];
#if defined(PLUGIN_USE_IRAM)
#define LOOP_REPEAT_IRAM 1024
static volatile int buf_iram[BUF_SIZE] IBSS_ATTR;
#endif
/* (Byte per loop * loops)>>20 * ticks per s * 10 / ticks = dMB per s */
#define dMB_PER_SEC(cnt, delta) ((((BUF_SIZE*sizeof(int)*cnt)>>20)*HZ*10)/delta)
void write_test(volatile int *buf, int buf_size, int loop_cnt,
int line, char *ramtype)
{
int delta, dMB;
int last_tick = *rb->current_tick;
#if defined(CPU_ARM)
asm volatile (
"mov r0, #0 \n"
"mov r1, #1 \n"
"mov r2, #2 \n"
"mov r3, #3 \n"
"mov r6, %[loops] \n"
".outer_loop_read: \n"
"mov r4, %[buf_p] \n"
"mov r5, %[size] \n"
".inner_loop_read: \n"
"stmia r4!, {r0-r3} \n"
"stmia r4!, {r0-r3} \n"
"subs r5, r5, #8 \n"
"bgt .inner_loop_read \n"
"subs r6, r6, #1 \n"
"bgt .outer_loop_read \n"
:
: [loops] "r" (loop_cnt), [size] "r" (buf_size), [buf_p] "r" (buf)
: "r0", "r1", "r2", "r3", "r4", "r5", "r6"
);
#else
int i, j;
for(i = 0; i < loop_cnt; i++)
{
for (j = 0; j < buf_size; j+=4)
{
buf[j ] = j;
buf[j+1] = j+1;
buf[j+2] = j+2;
buf[j+3] = j+3;
}
}
#endif
delta = *rb->current_tick - last_tick;
delta = delta>0 ? delta : delta+1;
dMB = dMB_PER_SEC(loop_cnt, delta);
rb->screens[0]->putsf(0, line, "%s wr: %3d.%d MB/s (%2d ticks for %d MB)",
ramtype, dMB/10, dMB%10, delta,
(loop_cnt*BUF_SIZE*4)>>20);
}
void read_test(volatile int *buf, int buf_size, int loop_cnt,
int line, char *ramtype)
{
int delta, dMB;
int last_tick = *rb->current_tick;
#if defined(CPU_ARM)
asm volatile (
"mov r6, %[loops] \n"
".outer_loop_write: \n"
"mov r4, %[buf_p] \n"
"mov r5, %[size] \n"
".inner_loop_write: \n"
"ldmia r4!, {r0-r3} \n"
"ldmia r4!, {r0-r3} \n"
"subs r5, r5, #8 \n"
"bgt .inner_loop_write \n"
"subs r6, r6, #1 \n"
"bgt .outer_loop_write \n"
:
: [loops] "r" (loop_cnt), [size] "r" (buf_size), [buf_p] "r" (buf)
: "r0", "r1", "r2", "r3", "r4", "r5", "r6"
);
#else
int i, j, x;
for(i = 0; i < loop_cnt; i++)
{
for(j = 0; j < buf_size; j+=4)
{
x = buf[j ];
x = buf[j+2];
x = buf[j+3];
x = buf[j+4];
}
}
#endif
delta = *rb->current_tick - last_tick;
delta = delta>0 ? delta : delta+1;
dMB = dMB_PER_SEC(loop_cnt, delta);
rb->screens[0]->putsf(0, line, "%s rd: %3d.%d MB/s (%2d ticks for %d MB)",
ramtype, dMB/10, dMB%10, delta,
(loop_cnt*BUF_SIZE*4)>>20);
}
/* (Byte per loop * loops * ticks per s / ticks)>>10 = KB per s */
#define KB_PER_SEC(delta) (((BUF_SIZE*sizeof(buf[0])*LOOP_REPEAT*HZ)/delta) >> 10)
enum plugin_status plugin_start(const void* parameter)
{
@ -36,52 +135,34 @@ enum plugin_status plugin_start(const void* parameter)
bool done = false;
bool boost = false;
int count = 0;
int last_tick = 0;
rb->lcd_setfont(FONT_SYSFIXED);
rb->screens[0]->clear_display();
rb->screens[0]->putsf(0, 0, "patience, may take some seconds...");
rb->screens[0]->update();
while (!done)
{
unsigned i, j;
int line = 0;
int x;
int delta;
last_tick = *rb->current_tick;
for(i = 0; i < LOOP_REPEAT; i++)
{
for (j = 0; j < BUF_SIZE; j+=4)
{
buf[j ] = j;
buf[j+1] = j+1;
buf[j+2] = j+2;
buf[j+3] = j+3;
}
}
delta = *rb->current_tick - last_tick;
rb->screens[0]->clear_display();
rb->screens[0]->putsf(0, line++, "%s", boost?"boosted":"unboosted");
rb->screens[0]->putsf(0, line++, "bufsize: %u", BUF_SIZE*sizeof(buf[0]));
#ifndef SIMULATOR
rb->screens[0]->putsf(0, line++, "clock: %d Hz", *rb->cpu_frequency);
#endif
rb->screens[0]->putsf(0, line++, "loop#: %d", ++count);
rb->screens[0]->putsf(0, line++, "write ticks: %2d (%5d KB/s)", delta,
KB_PER_SEC(delta));
last_tick = *rb->current_tick;
for(i = 0; i < LOOP_REPEAT; i++)
{
for(j = 0; j < BUF_SIZE; j+=4)
{
x = buf[j ];
x = buf[j+2];
x = buf[j+3];
x = buf[j+4];
}
}
delta = *rb->current_tick - last_tick;
rb->screens[0]->putsf(0, line++, "read ticks : %2d (%5d KB/s)", delta,
KB_PER_SEC(delta));
read_test (buf_dram, BUF_SIZE, LOOP_REPEAT_DRAM, line++, "DRAM");
write_test(buf_dram, BUF_SIZE, LOOP_REPEAT_DRAM, line++, "DRAM");
#if defined(PLUGIN_USE_IRAM)
read_test (buf_iram, BUF_SIZE, LOOP_REPEAT_IRAM, line++, "IRAM");
write_test(buf_iram, BUF_SIZE, LOOP_REPEAT_IRAM, line++, "IRAM");
#endif
rb->screens[0]->update();
switch (rb->get_action(CONTEXT_STD, TIMEOUT_NOBLOCK))
switch (rb->get_action(CONTEXT_STD, HZ/5))
{
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
case ACTION_STD_PREV: