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https://opencores.org/ocsvn/eco32/eco32/trunk
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[/] [eco32/] [trunk/] [hwtests/] [tlbtest/] [main.c] - Rev 86
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/* * main.c -- the main program */ #include "common.h" #include "lib.h" #include "start.h" #define NUM_ENTRIES 32 #define NUM_FIXED 4 struct { Word hi; Word lo; } randomEntries[NUM_ENTRIES] = { { 0x25FACEE3, 0x8ACF75B6 }, { 0xCCDC1C4C, 0x524499EF }, { 0x81CB5C0B, 0x7E098E5D }, { 0xEB6F7F76, 0xAAA301DB }, { 0x6FB1A2B8, 0x4E206502 }, { 0x7FE39DFD, 0x3E74D858 }, { 0x0422E083, 0x73B2D23A }, { 0x71144B0A, 0xE623F4AF }, { 0x5AAED767, 0xC34BEB52 }, { 0x35A8D36A, 0x8E584748 }, { 0x41B6B347, 0x544A9B0D }, { 0x039AED34, 0x6927DF69 }, { 0x3E3EEC16, 0xF7585602 }, { 0x339AC351, 0xDD43F704 }, { 0xA14C0101, 0x81FC5D62 }, { 0x5B522D47, 0x9BC2EF2D }, { 0x61235741, 0x67377AE9 }, { 0x45BDFCA7, 0x4CDBDCF1 }, { 0x2E044D77, 0xF70E7CE1 }, { 0x33FC4126, 0x18B3D47C }, { 0xF5F3CBEA, 0x9583DCC8 }, { 0xA6B7454B, 0x887C5270 }, { 0xED805C94, 0x9A6D6F8F }, { 0xF27359EC, 0x2FC185D8 }, { 0x0DDD34A3, 0x47B5D83A }, { 0xEFDB299A, 0xC784294A }, { 0x17A4E2F6, 0x5EAEFA99 }, { 0x6EE1B054, 0xD716C16C }, { 0xA34AF381, 0x8F775888 }, { 0x2F48D37B, 0x46D72169 }, { 0x97FC2065, 0xC3685619 }, { 0x48B21FA3, 0x976B4EFB }, }; struct { Word hi; Word lo; } mappingEntries[NUM_ENTRIES] = { { 0x00006000, 0x000F8001 }, { 0x00017000, 0x00099001 }, { 0x00004000, 0x0001A001 }, { 0x0000D000, 0x000DB001 }, { 0x00012000, 0x0009C001 }, { 0x00013000, 0x0007D001 }, { 0x00010000, 0x0001E001 }, { 0x00009000, 0x0009F001 }, { 0x0001E000, 0x00000001 }, { 0x0000F000, 0x00021001 }, { 0x0001C000, 0x000E2001 }, { 0x00005000, 0x00023001 }, { 0x0000A000, 0x000C4001 }, { 0x0000B000, 0x00085001 }, { 0x00008000, 0x00006001 }, { 0x00001000, 0x00067001 }, { 0x00016000, 0x000A8001 }, { 0x00007000, 0x000A9001 }, { 0x00014000, 0x0004A001 }, { 0x0001D000, 0x0004B001 }, { 0x00002000, 0x000EC001 }, { 0x00003000, 0x0008D001 }, { 0x00000000, 0x000EE001 }, { 0x00019000, 0x0000F001 }, { 0x0000E000, 0x00050001 }, { 0x0001F000, 0x00011001 }, { 0x0000C000, 0x000B2001 }, { 0x00015000, 0x00093001 }, { 0x0001A000, 0x00074001 }, { 0x0001B000, 0x00075001 }, { 0x00018000, 0x00036001 }, { 0x00011000, 0x000D7001 }, }; void flushTLB(void) { unsigned int invalPage; int i; invalPage = 0xC0000000; for (i = 0; i < NUM_ENTRIES; i++) { setTLB(i, invalPage, 0); invalPage += (1 << 12); } } int countTLB(void) { int i; int n; Word hi; n = 0; for (i = 0; i < NUM_ENTRIES; i++) { hi = getTLB_HI(i); if ((hi & 0xC0000000) != 0xC0000000) { n++; } } return n; } /**************************************************************/ void indexedReadWriteTest(void) { int i; Word hi, lo; Bool fail; printf("Indexed R/W test\t\t"); for (i = 0; i < NUM_ENTRIES; i++) { setTLB(i, randomEntries[i].hi, randomEntries[i].lo); } fail = false; for (i = 0; i < NUM_ENTRIES; i++) { hi = getTLB_HI(i); lo = getTLB_LO(i); if ((hi & 0xFFFFF000) != (randomEntries[i].hi & 0xFFFFF000) || (lo & 0x3FFFF003) != (randomEntries[i].lo & 0x3FFFF003)) { fail = true; } } if (fail) { printf("failed\n"); } else { printf("ok\n"); } } void writeRandomTest(void) { int i; int n; int i04, i08, i12, i16; int i20, i24, i28; printf("Write random test\n"); flushTLB(); i04 = 0; i08 = 0; i12 = 0; i16 = 0; i20 = 0; i24 = 0; i28 = 0; for (i = 1; i <= 100 * NUM_ENTRIES; i++) { wrtRndTLB(i << 12, i << 12); n = countTLB(); if (n == 4 && i04 == 0) { i04 = i; } if (n == 8 && i08 == 0) { i08 = i; } if (n == 12 && i12 == 0) { i12 = i; } if (n == 16 && i16 == 0) { i16 = i; } if (n == 20 && i20 == 0) { i20 = i; } if (n == 24 && i24 == 0) { i24 = i; } if (n == 28 && i28 == 0) { i28 = i; } wait(randomEntries[i % NUM_ENTRIES].hi & 0xFF); } if (i04 > 0) { printf(" 4 entries filled after %3d random writes\n", i04); } else { printf(" 4 entries never filled\n"); } if (i08 > 0) { printf(" 8 entries filled after %3d random writes\n", i08); } else { printf(" 8 entries never filled\n"); } if (i12 > 0) { printf(" 12 entries filled after %3d random writes\n", i12); } else { printf(" 12 entries never filled\n"); } if (i16 > 0) { printf(" 16 entries filled after %3d random writes\n", i16); } else { printf(" 16 entries never filled\n"); } if (i20 > 0) { printf(" 20 entries filled after %3d random writes\n", i20); } else { printf(" 20 entries never filled\n"); } if (i24 > 0) { printf(" 24 entries filled after %3d random writes\n", i24); } else { printf(" 24 entries never filled\n"); } if (i28 > 0) { printf(" 28 entries filled after %3d random writes\n", i28); } else { printf(" 28 entries never filled\n"); } } void searchTest(void) { int i; Word index; Bool fail; printf("Search test\t\t\t"); for (i = 0; i < NUM_ENTRIES; i++) { setTLB(i, randomEntries[i].hi, randomEntries[i].lo); } fail = false; for (i = 0; i < NUM_ENTRIES; i++) { index = probeTLB(randomEntries[i].hi); if (index != i) { fail = true; } } index = probeTLB(0xDEADBEEF); if ((index & 0x80000000) == 0) { fail = true; } if (fail) { printf("failed\n"); } else { printf("ok\n"); } } void mapTest(void) { int i; Word page, offset; Word virt; int index; Word frame; Word phys; Word cont; Bool fail; printf("Map test\t\t\t"); /* preset each memory word (below 1M) with its physical address */ for (i = 0; i < 0x100000; i += 4) { *(Word *)(0xC0000000 | i) = i; } /* preset TLB */ for (i = 0; i < NUM_ENTRIES; i++) { setTLB(i, mappingEntries[i].hi, mappingEntries[i].lo); } /* now access memory and check if addresses are mapped correctly */ fail = false; page = 7; offset = 0x123; for (i = 0; i < 100000; i++) { /* compute pseudo-random virtual word address (page number 0..31) */ page = (page * 13 + 1) & 0x1F; offset = (offset * 109) & 0x00000FFF; virt = (page << 12) | (offset & ~0x3); /* lookup frame number in TLB and construct physical word address */ index = probeTLB(virt); if (index & 0x80000000) { fail = true; break; } frame = getTLB_LO(index) & 0xFFFFF000; phys = frame | (offset & ~0x3); /* access memory by dereferencing the virtual address */ cont = *(Word *)virt; /* word read should equal physical address */ if (cont != phys) { fail = true; } } if (fail) { printf("failed\n"); } else { printf("ok\n"); } } /**************************************************************/ int main(void) { printf("\nStart of TLB tests.\n\n"); indexedReadWriteTest(); writeRandomTest(); searchTest(); mapTest(); printf("\nEnd of TLB tests.\n"); while (1) ; return 0; }
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