| [992] | 1 | /** |
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| 2 | * \File : reset_hba.h |
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| 3 | * \Date : 01/04/2015 |
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| 4 | * \Author : alain greiner |
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| 5 | * \Copyright (c) UPMC-LIP6 |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef _RESET_IOC_HBA_H |
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| 9 | #define _RESET_IOC_HBA_H |
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| 10 | |
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| 11 | /////////////////////////////////////////////////////////////////////////////////// |
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| 12 | // HBA component registers offsets |
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| 13 | /////////////////////////////////////////////////////////////////////////////////// |
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| 14 | |
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| 15 | enum SoclibMultiAhciRegisters |
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| 16 | { |
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| 17 | HBA_PXCLB = 0, // command list base address 32 LSB bits |
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| 18 | HBA_PXCLBU = 1, // command list base address 32 MSB bits |
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| 19 | HBA_PXIS = 4, // interrupt status |
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| 20 | HBA_PXIE = 5, // interrupt enable |
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| 21 | HBA_PXCMD = 6, // run |
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| 22 | HBA_PXCI = 14, // command bit-vector |
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| 23 | HBA_SPAN = 0x400, // 4 Kbytes per channel => 1024 slots |
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| 24 | }; |
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| 25 | |
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| 26 | /////////////////////////////////////////////////////////////////////////////////// |
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| 27 | // structures for one AHCI command table |
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| 28 | /////////////////////////////////////////////////////////////////////////////////// |
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| 29 | |
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| 30 | typedef struct hba_cmd_header_s // size = 16 bytes |
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| 31 | { |
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| 32 | unsigned int res0; // reserved |
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| 33 | unsigned char lba0; // LBA 7:0 |
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| 34 | unsigned char lba1; // LBA 15:8 |
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| 35 | unsigned char lba2; // LBA 23:16 |
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| 36 | unsigned char res1; // reserved |
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| 37 | unsigned char lba3; // LBA 31:24 |
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| 38 | unsigned char lba4; // LBA 39:32 |
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| 39 | unsigned char lba5; // LBA 47:40 |
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| 40 | unsigned char res2; // reserved |
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| 41 | unsigned int res3; // reserved |
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| 42 | |
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| 43 | } hba_cmd_header_t; |
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| 44 | |
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| 45 | typedef struct hba_cmd_buffer_s // size = 16 bytes |
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| 46 | { |
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| 47 | unsigned int dba; // Buffer base address 32 LSB bits |
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| 48 | unsigned int dbau; // Buffer base address 32 MSB bits |
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| 49 | unsigned int res0; // reserved |
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| 50 | unsigned int dbc; // Buffer byte count |
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| 51 | |
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| 52 | } hba_cmd_buffer_t; |
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| 53 | |
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| 54 | typedef struct hba_cmd_table_s // one command = header + one buffer |
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| 55 | { |
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| 56 | |
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| 57 | hba_cmd_header_t header; // contains lba value |
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| 58 | hba_cmd_buffer_t buffer; // contains buffer address & size |
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| 59 | |
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| 60 | } hba_cmd_table_t; |
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| 61 | |
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| 62 | /////////////////////////////////////////////////////////////////////////////////// |
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| 63 | // structure for one AHCI command descriptor |
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| 64 | /////////////////////////////////////////////////////////////////////////////////// |
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| 65 | |
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| 66 | typedef struct hba_cmd_desc_s // size = 16 bytes |
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| 67 | { |
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| 68 | unsigned char flag[2]; // W in bit 6 of flag[0] |
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| 69 | unsigned char prdtl[2]; // Number of buffers |
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| 70 | unsigned int prdbc; // Number of bytes actually transfered |
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| 71 | unsigned int ctba; // Command data base address 32 LSB bits |
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| 72 | unsigned int ctbau; // Command data base address 32 MSB bits |
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| 73 | |
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| 74 | } hba_cmd_desc_t; |
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| 75 | |
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| 76 | /////////////////////////////////////////////////////////////////////////////////// |
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| 77 | // access functions |
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| 78 | /////////////////////////////////////////////////////////////////////////////////// |
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| 79 | |
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| 80 | int reset_hba_init (); |
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| 81 | |
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| 82 | int reset_hba_read( unsigned int lba, |
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| 83 | void* buffer, |
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| 84 | unsigned int count ); |
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| 85 | #endif |
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| 86 | |
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| 87 | // Local Variables: |
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| 88 | // tab-width: 4 |
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| 89 | // c-basic-offset: 4 |
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| 90 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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| 91 | // indent-tabs-mode: nil |
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| 92 | // End: |
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| 93 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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| 94 | |
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