projects / OpenSPARC-T2-SAM / blame
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1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== | |
| 3 | * | |
| 4 | * OpenSPARC T2 Processor File: BL_HammingEcc.h | |
| 5 | * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. | |
| 6 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES. | |
| 7 | * | |
| 8 | * The above named program is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU General Public | |
| 10 | * License version 2 as published by the Free Software Foundation. | |
| 11 | * | |
| 12 | * The above named program is distributed in the hope that it will be | |
| 13 | * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public | |
| 18 | * License along with this work; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. | |
| 20 | * | |
| 21 | * ========== Copyright Header End ============================================ | |
| 22 | */ | |
| 23 | /************************************************************************ | |
| 24 | ** | |
| 25 | ** Copyright (C) 2006, Sun Microsystems, Inc. | |
| 26 | ** | |
| 27 | ** Sun considers its source code as an unpublished, proprietary | |
| 28 | ** trade secret and it is available only under strict license provisions. | |
| 29 | ** This copyright notice is placed here only to protect Sun in the event | |
| 30 | ** the source is deemed a published work. Disassembly, decompilation, | |
| 31 | ** or other means of reducing the object code to human readable form | |
| 32 | ** is prohibited by the license agreement under which this code is | |
| 33 | ** provided to the user or company in possession of this copy. | |
| 34 | ** | |
| 35 | *************************************************************************/ | |
| 36 | #ifndef __BL_HammingEcc_h__ | |
| 37 | #define __BL_HammingEcc_h__ | |
| 38 | #include "BL_BitUtility.h" | |
| 39 | #include "BL_BaseEcc.h" | |
| 40 | #include <unistd.h> | |
| 41 | ||
| 42 | class BL_HammingEcc | |
| 43 | { | |
| 44 | public: | |
| 45 | ||
| 46 | friend class BL_Hamming_22_6_Synd; | |
| 47 | friend class BL_Hamming_32_7_Synd; | |
| 48 | friend class BL_Hamming_64_8_Synd; | |
| 49 | ||
| 50 | BL_HammingEcc() {} | |
| 51 | ||
| 52 | ~BL_HammingEcc() {} | |
| 53 | ||
| 54 | protected: | |
| 55 | ||
| 56 | static BL_Hamming_22_6_Synd get_hamming_22_6_synd(uint32_t data, | |
| 57 | uint32_t stored_ecc_val); | |
| 58 | ||
| 59 | static BL_Hamming_32_7_Synd get_hamming_32_7_synd(uint32_t data, | |
| 60 | uint32_t stored_ecc_val); | |
| 61 | ||
| 62 | static BL_Hamming_64_8_Synd get_hamming_64_8_synd(uint64_t data, | |
| 63 | uint64_t stored_ecc_val); | |
| 64 | ||
| 65 | typedef enum { | |
| 66 | BL_Hamming_22_6, | |
| 67 | BL_Hamming_32_7, | |
| 68 | BL_Hamming_64_8 | |
| 69 | } BL_HammingEccTypes; | |
| 70 | ||
| 71 | static BL_EccBits calc_check_bits(BL_HammingEccTypes type, | |
| 72 | uint64_t data); | |
| 73 | ||
| 74 | static uint64_t hamming_22_6_ecc_masks[]; | |
| 75 | static uint64_t hamming_32_7_ecc_masks[]; | |
| 76 | static uint64_t hamming_64_8_ecc_masks[]; | |
| 77 | }; | |
| 78 | ||
| 79 | #endif |