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/*
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* Copyright (c) 2009 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#include "L2V.h"
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#include "L2V_Funcs.h"
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#include "L2V_Print.h"
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//#include <stdio.h>
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//#include <stdlib.h>
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L2V_t L2V;
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#define LAST_TREE_TEST 16
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#define SIMPLE_SIZE (L2V_TREE_SIZE*LAST_TREE_TEST)
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// Prototypes
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static void RandomTest(void);
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static void SequentialTest(void);
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static void Simple_Init(void);
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static void Simple_Update(UInt32 lba, UInt32 size, UInt32 vpn);
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static void Simple_Lookup(UInt32 lba, UInt32 *vpn);
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static void Seed_Local_Rand(UInt32 seed);
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static UInt32 Get_Local_Rand(void);
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static UInt32 _current_rand = 0;
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void Usage(int argc, char** argv)
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{
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printf("Usage: %s s OR %s r (for sequential and random, respectively\n", argv[0], argv[0]);
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exit(-1);
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}
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int test = 0;
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#if 0
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int main(int argc, char** argv)
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{
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L2V_Init(SIMPLE_SIZE, (L2V_VPN_SPECIAL-1) / 8192, 8192);
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if (argc == 2) {
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if ('r' == argv[1][0]) {
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test = 0;
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} else if ('s' == argv[1][0]) {
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test = 1;
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} else {
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Usage(argc, argv);
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}
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}
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if (argc > 2) {
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Usage(argc, argv);
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}
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if (0 == test) {
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RandomTest();
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} else {
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SequentialTest();
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}
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return 0;
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}
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#endif
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#define MAXLEN 512
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void L2VRandomTest() {
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UInt32 lba, size, vpn;
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UInt32 i;
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L2V_SearchCtx_t c;
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UInt32 iterations = 1000000;
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L2V_Init(SIMPLE_SIZE, (L2V_VPN_SPECIAL-1) / 8192, 8192);
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L2V_Search_Init(&c);
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Seed_Local_Rand(12345);
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while (iterations--) {
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lba = Get_Local_Rand() % ((L2V_TREE_SIZE*LAST_TREE_TEST)-MAXLEN);
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size = (Get_Local_Rand() % (MAXLEN-1))+1;
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vpn = Get_Local_Rand() % ((1<<(L2V_BITS_VPN-1))-size-1);
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// 1 write
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L2V_Update(lba, size, vpn);
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// 5 reads
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for (i = 0; i < 5; ++i)
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{
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c.lba = Get_Local_Rand() % ((L2V_TREE_SIZE*LAST_TREE_TEST)-MAXLEN);
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L2V_Search(&c);
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}
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}
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}
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static void SequentialTest() {
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UInt32 lba, size, vpn;
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UInt32 i, svpn;
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L2V_SearchCtx_t c;
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L2V_Search_Init(&c);
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Simple_Init();
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Seed_Local_Rand(12345);
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lba = 0;
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size = 0;
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vpn = 1;
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while (1) {
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lba += size;
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size = (Get_Local_Rand() % (MAXLEN-1))+1;
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if ((lba + size) >= L2V_TREE_SIZE) {
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lba = 0;
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}
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if ((Get_Local_Rand() & 3) == 0) {
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vpn = Get_Local_Rand() % ((1<<(L2V_BITS_VPN-1))-size-1);
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}
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while (((vpn + size) & ((1<<(L2V_BITS_VPN-1))-1)) < vpn) {
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vpn = Get_Local_Rand() % ((1<<(L2V_BITS_VPN-1))-size-1);
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}
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printf("[UPD: lba:%d, size:%d, vpn:%d]\n", lba, size, vpn);
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L2V_Update(lba, size, vpn);
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Simple_Update(lba, size, vpn);
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L2V_PrintUsage(0);
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vpn += size;
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// Validate entire range
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unsigned int maxlevel=0;
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for (i = 0; i < SIMPLE_SIZE; i++) {
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Simple_Lookup(i, &svpn);
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c.lba = i;
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L2V_Search(&c);
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if (c.level > maxlevel) maxlevel = c.level;
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if (svpn != c.vpn) {
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printf("\n\n\n");
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printf("====================\n");
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printf("MISMATCH lba:%d\n", i);
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printf("--------------------\n");
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printf("Simple vpn:%d\n", svpn);
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printf("Lookup vpn:%d\n", c.vpn);
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}
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l2v_assert_eq(svpn, c.vpn);
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}
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printf("maxlevel: %d\n", maxlevel);
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l2v_assert_lt(maxlevel, L2V_MAX_TREE_DEPTH);
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}
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}
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UInt32 Simple_vpn[SIMPLE_SIZE];
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static void Simple_Init()
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{
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UInt32 i;
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for (i = 0; i < SIMPLE_SIZE; i++) {
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Simple_vpn[i] = L2V_VPN_MISS;
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}
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}
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static void Simple_Update(UInt32 lba, UInt32 size, UInt32 vpn)
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{
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while (size) {
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Simple_vpn[lba] = vpn;
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// Iterate
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lba++;
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if (vpn < L2V_VPN_SPECIAL) {
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vpn++;
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}
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size--;
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}
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}
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static void Simple_Lookup(UInt32 lba, UInt32 *vpn)
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{
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*vpn = Simple_vpn[lba];
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}
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static void Seed_Local_Rand(UInt32 seed)
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{
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_current_rand = seed;
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}
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static UInt32 Get_Local_Rand(void)
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{
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int i;
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for (i = 0; i < 17; ++i)
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{
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_current_rand = (_current_rand >> 1) ^ (UInt32)((0 - (_current_rand & 1u)) & 0xd0000001u);
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}
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return _current_rand;
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}
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@@ -0,0 +1,29 @@
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/*
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* Copyright (C) 2010 Apple, Inc. All rights reserved.
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*
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* This document is the property of Apple Computer, Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Computer, Inc.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <sys.h>
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#include <sys/menu.h>
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#if defined(WITH_MENU) && WITH_MENU
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extern void L2VRandomTest(void);
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static int do_l2v(int argc, struct cmd_arg *args)
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{
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UInt64 start = system_time();
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L2VRandomTest();
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printf("test time: %lldus\n", system_time() - start);
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return(0);
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}
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MENU_COMMAND_DEBUG(l2v, do_l2v, "run l2v benchmark", NULL);
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#endif
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@@ -0,0 +1,40 @@
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# Copyright (C) 2010 Apple, Inc. All rights reserved.
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#
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# This document is the property of Apple Computer, Inc.
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# It is considered confidential and proprietary.
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#
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# This document may not be reproduced or transmitted in any form,
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# in whole or in part, without the express written permission of
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# Apple Computer, Inc.
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#
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#
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# L2V Test Benchmark
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#
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LOCAL_DIR := $(GET_LOCAL_DIR)
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NAND_DIR := $(dir $(GET_LOCAL_DIR))
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L2V_DIR := $(NAND_DIR)/raw/Whimory/Core/FTL/L2V
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MODULES += drivers/flash_nand/OAM
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GLOBAL_INCLUDES += $(L2V_DIR)
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OPTIONS += ENABLE_L2V_TREE=1
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ALL_OBJS +=\
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$(LOCAL_DIR)/benchmark.o \
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$(LOCAL_DIR)/L2V_Test.o \
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$(L2V_DIR)/L2V_Forget.o \
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$(L2V_DIR)/L2V_Free.o \
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$(L2V_DIR)/L2V_Funcs.o \
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$(L2V_DIR)/L2V_Init.o \
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$(L2V_DIR)/L2V_Mem.o \
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$(L2V_DIR)/L2V_Print.o \
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$(L2V_DIR)/L2V_Repack.o \
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$(L2V_DIR)/L2V_Search.o \
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$(L2V_DIR)/L2V_Types.o \
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$(L2V_DIR)/L2V_Update.o \
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$(L2V_DIR)/L2V_Valid.o
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IOP_HEAP_REQUIRED := $(call ADD,$(IOP_HEAP_REQUIRED),1048576)
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