forked from len0rd/rockbox
Submit FS#11253. Rework of test_mem plugin to bench DRAM and IRAM. Also add ARM assembler and change the result format.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25918 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann
parent
e8c72b6891
commit
70daf4ed4d
1 changed files with 121 additions and 40 deletions
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@ -7,7 +7,7 @@
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* \/ \/ \/ \/ \/
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* \/ \/ \/ \/ \/
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* $Id$
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* $Id$
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*
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*
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* Copyright (C) 2010 Thomas Martitz
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* Copyright (C) 2010 Thomas Martitz, Andree Buschmann
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*
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*
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* This program is free software; you can redistribute it and/or
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* modify it under the terms of the GNU General Public License
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@ -23,12 +23,111 @@
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PLUGIN_HEADER
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PLUGIN_HEADER
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#define BUF_SIZE ((PLUGIN_BUFFER_SIZE-(10<<10)) / (sizeof(int)))
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#define BUF_SIZE (1<<13) /* 32 KB = (1<<13)*sizeof(int) */
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#define LOOP_REPEAT 8
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static volatile int buf[BUF_SIZE];
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#define LOOP_REPEAT_DRAM 256
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static volatile int buf_dram[BUF_SIZE];
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#if defined(PLUGIN_USE_IRAM)
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#define LOOP_REPEAT_IRAM 1024
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static volatile int buf_iram[BUF_SIZE] IBSS_ATTR;
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#endif
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/* (Byte per loop * loops)>>20 * ticks per s * 10 / ticks = dMB per s */
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#define dMB_PER_SEC(cnt, delta) ((((BUF_SIZE*sizeof(int)*cnt)>>20)*HZ*10)/delta)
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void write_test(volatile int *buf, int buf_size, int loop_cnt,
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int line, char *ramtype)
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{
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int delta, dMB;
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int last_tick = *rb->current_tick;
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#if defined(CPU_ARM)
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asm volatile (
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"mov r0, #0 \n"
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"mov r1, #1 \n"
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"mov r2, #2 \n"
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"mov r3, #3 \n"
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"mov r6, %[loops] \n"
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".outer_loop_read: \n"
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"mov r4, %[buf_p] \n"
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"mov r5, %[size] \n"
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".inner_loop_read: \n"
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"stmia r4!, {r0-r3} \n"
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"stmia r4!, {r0-r3} \n"
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"subs r5, r5, #8 \n"
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"bgt .inner_loop_read \n"
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"subs r6, r6, #1 \n"
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"bgt .outer_loop_read \n"
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:
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: [loops] "r" (loop_cnt), [size] "r" (buf_size), [buf_p] "r" (buf)
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: "r0", "r1", "r2", "r3", "r4", "r5", "r6"
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);
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#else
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int i, j;
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for(i = 0; i < loop_cnt; i++)
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{
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for (j = 0; j < buf_size; j+=4)
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{
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buf[j ] = j;
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buf[j+1] = j+1;
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buf[j+2] = j+2;
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buf[j+3] = j+3;
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}
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}
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#endif
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delta = *rb->current_tick - last_tick;
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delta = delta>0 ? delta : delta+1;
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dMB = dMB_PER_SEC(loop_cnt, delta);
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rb->screens[0]->putsf(0, line, "%s wr: %3d.%d MB/s (%2d ticks for %d MB)",
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ramtype, dMB/10, dMB%10, delta,
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(loop_cnt*BUF_SIZE*4)>>20);
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}
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void read_test(volatile int *buf, int buf_size, int loop_cnt,
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int line, char *ramtype)
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{
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int delta, dMB;
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int last_tick = *rb->current_tick;
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#if defined(CPU_ARM)
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asm volatile (
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"mov r6, %[loops] \n"
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".outer_loop_write: \n"
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"mov r4, %[buf_p] \n"
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"mov r5, %[size] \n"
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".inner_loop_write: \n"
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"ldmia r4!, {r0-r3} \n"
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"ldmia r4!, {r0-r3} \n"
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"subs r5, r5, #8 \n"
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"bgt .inner_loop_write \n"
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"subs r6, r6, #1 \n"
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"bgt .outer_loop_write \n"
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:
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: [loops] "r" (loop_cnt), [size] "r" (buf_size), [buf_p] "r" (buf)
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: "r0", "r1", "r2", "r3", "r4", "r5", "r6"
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);
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#else
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int i, j, x;
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for(i = 0; i < loop_cnt; i++)
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{
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for(j = 0; j < buf_size; j+=4)
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{
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x = buf[j ];
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x = buf[j+2];
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x = buf[j+3];
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x = buf[j+4];
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}
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}
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#endif
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delta = *rb->current_tick - last_tick;
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delta = delta>0 ? delta : delta+1;
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dMB = dMB_PER_SEC(loop_cnt, delta);
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rb->screens[0]->putsf(0, line, "%s rd: %3d.%d MB/s (%2d ticks for %d MB)",
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ramtype, dMB/10, dMB%10, delta,
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(loop_cnt*BUF_SIZE*4)>>20);
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}
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/* (Byte per loop * loops * ticks per s / ticks)>>10 = KB per s */
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#define KB_PER_SEC(delta) (((BUF_SIZE*sizeof(buf[0])*LOOP_REPEAT*HZ)/delta) >> 10)
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enum plugin_status plugin_start(const void* parameter)
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enum plugin_status plugin_start(const void* parameter)
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{
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{
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@ -36,52 +135,34 @@ enum plugin_status plugin_start(const void* parameter)
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bool done = false;
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bool done = false;
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bool boost = false;
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bool boost = false;
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int count = 0;
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int count = 0;
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int last_tick = 0;
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rb->lcd_setfont(FONT_SYSFIXED);
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rb->lcd_setfont(FONT_SYSFIXED);
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rb->screens[0]->clear_display();
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rb->screens[0]->putsf(0, 0, "patience, may take some seconds...");
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rb->screens[0]->update();
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while (!done)
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while (!done)
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{
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{
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unsigned i, j;
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int line = 0;
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int line = 0;
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int x;
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int delta;
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last_tick = *rb->current_tick;
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for(i = 0; i < LOOP_REPEAT; i++)
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{
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for (j = 0; j < BUF_SIZE; j+=4)
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{
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buf[j ] = j;
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buf[j+1] = j+1;
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buf[j+2] = j+2;
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buf[j+3] = j+3;
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}
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}
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delta = *rb->current_tick - last_tick;
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rb->screens[0]->clear_display();
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rb->screens[0]->clear_display();
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rb->screens[0]->putsf(0, line++, "%s", boost?"boosted":"unboosted");
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rb->screens[0]->putsf(0, line++, "%s", boost?"boosted":"unboosted");
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rb->screens[0]->putsf(0, line++, "bufsize: %u", BUF_SIZE*sizeof(buf[0]));
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#ifndef SIMULATOR
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rb->screens[0]->putsf(0, line++, "clock: %d Hz", *rb->cpu_frequency);
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#endif
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rb->screens[0]->putsf(0, line++, "loop#: %d", ++count);
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rb->screens[0]->putsf(0, line++, "loop#: %d", ++count);
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rb->screens[0]->putsf(0, line++, "write ticks: %2d (%5d KB/s)", delta,
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KB_PER_SEC(delta));
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read_test (buf_dram, BUF_SIZE, LOOP_REPEAT_DRAM, line++, "DRAM");
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last_tick = *rb->current_tick;
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write_test(buf_dram, BUF_SIZE, LOOP_REPEAT_DRAM, line++, "DRAM");
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for(i = 0; i < LOOP_REPEAT; i++)
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#if defined(PLUGIN_USE_IRAM)
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{
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read_test (buf_iram, BUF_SIZE, LOOP_REPEAT_IRAM, line++, "IRAM");
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for(j = 0; j < BUF_SIZE; j+=4)
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write_test(buf_iram, BUF_SIZE, LOOP_REPEAT_IRAM, line++, "IRAM");
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{
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#endif
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x = buf[j ];
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x = buf[j+2];
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x = buf[j+3];
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x = buf[j+4];
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}
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}
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delta = *rb->current_tick - last_tick;
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rb->screens[0]->putsf(0, line++, "read ticks : %2d (%5d KB/s)", delta,
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KB_PER_SEC(delta));
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rb->screens[0]->update();
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rb->screens[0]->update();
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switch (rb->get_action(CONTEXT_STD, TIMEOUT_NOBLOCK))
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switch (rb->get_action(CONTEXT_STD, HZ/5))
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{
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{
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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#ifdef HAVE_ADJUSTABLE_CPU_FREQ
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case ACTION_STD_PREV:
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case ACTION_STD_PREV:
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