[258] | 1 | /////////////////////////////////////////////////////////////////////////////////// |
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| 2 | // File : hba_driver.h |
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| 3 | // Date : 01/11/2013 |
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| 4 | // Author : alain greiner and zhang |
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| 5 | // Copyright (c) UPMC-LIP6 |
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| 6 | /////////////////////////////////////////////////////////////////////////////////// |
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[437] | 7 | // The hba_driver.c and hba_driver.h files are part ot the GIET-VM kernel. |
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| 8 | // This driver supports the SocLib VciMultiAhci component, that is a multi-channels, |
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| 9 | // block oriented, external storage contrÃŽler, respecting the AHCI standard. |
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| 10 | // |
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| 11 | // The SEG_IOC_BASE virtual address must be defined in the hard_config.h file. |
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| 12 | ////////////////////////////////////////////////////////////////////////////////// |
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[258] | 13 | |
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| 14 | #ifndef _GIET_HBA_DRIVERS_H_ |
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| 15 | #define _GIET_HBA_DRIVERS_H_ |
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| 16 | |
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| 17 | /////////////////////////////////////////////////////////////////////////////////// |
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| 18 | // HBA component registers offsets |
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| 19 | /////////////////////////////////////////////////////////////////////////////////// |
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| 20 | |
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| 21 | enum SoclibMultiAhciRegisters |
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| 22 | { |
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| 23 | HBA_PXCLB = 0, // command list base address 32 LSB bits |
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| 24 | HBA_PXCLBU = 1, // command list base address 32 MSB bits |
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| 25 | HBA_PXIS = 4, // interrupt status |
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| 26 | HBA_PXIE = 5, // interrupt enable |
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| 27 | HBA_PXCMD = 6, // run |
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| 28 | HBA_PXCI = 14, // command bit-vector |
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| 29 | HBA_SPAN = 0x400, // 4 Kbytes per channel => 1024 slots |
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| 30 | }; |
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| 31 | |
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| 32 | /////////////////////////////////////////////////////////////////////////////////// |
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| 33 | // Data structures for command table array |
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| 34 | /////////////////////////////////////////////////////////////////////////////////// |
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| 35 | |
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| 36 | typedef struct hba_cmd_header_s // size = 128 bytes |
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| 37 | { |
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| 38 | // WORD 0 |
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| 39 | unsigned int res0; // reserved |
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| 40 | |
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| 41 | // WORD 1 |
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| 42 | unsigned char lba0; // LBA 7:0 |
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| 43 | unsigned char lba1; // LBA 15:8 |
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| 44 | unsigned char lba2; // LBA 23:16 |
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| 45 | unsigned char res1; // reserved |
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| 46 | |
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| 47 | // WORD 2 |
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| 48 | unsigned char lba3; // LBA 31:24 |
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| 49 | unsigned char lba4; // LBA 39:32 |
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| 50 | unsigned char lba5; // LBA 47:40 |
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| 51 | unsigned char res2; // reserved |
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| 52 | |
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| 53 | // WORD 3 to 31 |
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| 54 | unsigned int res[29]; // reserved |
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| 55 | |
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| 56 | } hba_cmd_header_t; |
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| 57 | |
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| 58 | typedef struct hba_cmd_entry_s // size = 16 bytes |
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| 59 | { |
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| 60 | unsigned int dba; // Buffer base address 32 LSB bits |
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| 61 | unsigned int dbau; // Buffer base address 32 MSB bits |
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| 62 | unsigned int res0; // reserved |
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| 63 | unsigned int dbc; // Buffer byte count |
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| 64 | |
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| 65 | } hba_cmd_entry_t; |
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| 66 | |
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[295] | 67 | typedef struct hba_cmd_table_s // size = 4096 bytes |
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[258] | 68 | { |
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| 69 | |
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| 70 | hba_cmd_header_t header; // contains LBA |
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| 71 | hba_cmd_entry_t entry[248]; // 248 buffers max |
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| 72 | |
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| 73 | } hba_cmd_table_t; |
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| 74 | |
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| 75 | /////////////////////////////////////////////////////////////////////////////////// |
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| 76 | // Data structures for command list array |
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| 77 | /////////////////////////////////////////////////////////////////////////////////// |
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| 78 | |
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| 79 | typedef struct hba_cmd_desc_s // size = 16 bytes |
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| 80 | { |
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| 81 | // WORD 0 |
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| 82 | unsigned char flag[2]; // W in bit 6 of flag[0] |
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| 83 | unsigned char prdtl[2]; // Number of buffers |
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| 84 | |
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| 85 | // WORD 1 |
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| 86 | unsigned int prdbc; // Number of bytes actually transfered |
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| 87 | |
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| 88 | // WORD 2, WORD 3 |
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| 89 | unsigned int ctba; // Command Table base address 32 LSB bits |
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| 90 | unsigned int ctbau; // Command Table base address 32 MSB bits |
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| 91 | |
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| 92 | } hba_cmd_desc_t; |
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| 93 | |
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| 94 | typedef struct hba_cmd_list_s // size = 512 bytes |
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| 95 | { |
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| 96 | // 32 command descriptors |
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| 97 | hba_cmd_desc_t desc[32]; |
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| 98 | |
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| 99 | } hba_cmd_list_t; |
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| 100 | |
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| 101 | /////////////////////////////////////////////////////////////////////////////////// |
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[437] | 102 | // access functions |
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[258] | 103 | /////////////////////////////////////////////////////////////////////////////////// |
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| 104 | |
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[437] | 105 | /////////////////////////////////////////////////////////////////////////////////// |
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| 106 | // This function initializes for a given channel |
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| 107 | // - the HBA hardware registers, |
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| 108 | // - the command list pointer, |
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| 109 | // - the command lists physical addresse, |
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| 110 | // - the command tables physical addresses array, |
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| 111 | /////////////////////////////////////////////////////////////////////////////////// |
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[295] | 112 | extern unsigned int _hba_init ( unsigned int channel ); |
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[258] | 113 | |
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[437] | 114 | /////////////////////////////////////////////////////////////////////////////////// |
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| 115 | // This function register a write command in Command List and Command Table |
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| 116 | // for a single physical buffer, and updates the HBA_PXCI register. |
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| 117 | // Returns 0 if success, > 0 if error. |
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| 118 | /////////////////////////////////////////////////////////////////////////////////// |
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[295] | 119 | extern unsigned int _hba_write( unsigned int channel, // channel index |
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| 120 | unsigned int mode, // BOOT / KERNEL / USER |
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| 121 | unsigned int lba, // logic bloc address on device |
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| 122 | unsigned long long paddr, // memory buffer base address |
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| 123 | unsigned int count ); // number of blocs |
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[258] | 124 | |
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[437] | 125 | ////////////////////////////////////////////////////////////////////////////////// |
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| 126 | // This function register a read command in Command List and Command Table |
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| 127 | // for a single physical buffer, and updates the HBA_PXCI register. |
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| 128 | // Returns 0 if success, > 0 if error. |
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| 129 | ////////////////////////////////////////////////////////////////////////////////// |
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[295] | 130 | extern unsigned int _hba_read ( unsigned int channel, // channel index |
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| 131 | unsigned int mode, // BOOT / KERNEL / USER |
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| 132 | unsigned int lba, // logic bloc address on device |
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| 133 | unsigned long long paddr, // memory buffer base address |
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| 134 | unsigned int count ); // number of blocks |
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[258] | 135 | |
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[437] | 136 | ///////////////////////////////////////////////////////////////////////////////// |
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| 137 | // This function returns the block_size of HBA controller |
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| 138 | ///////////////////////////////////////////////////////////////////////////////// |
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| 139 | extern unsigned int _hba_get_block_size (); |
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| 140 | |
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| 141 | ///////////////////////////////////////////////////////////////////////////////////// |
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| 142 | // This function returns the content of the HBA_PXIS register for a given channel, |
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| 143 | // and reset this register to acknoledge IRQ. |
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| 144 | // return 0 if success, > 0 if error |
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| 145 | ///////////////////////////////////////////////////////////////////////////////////// |
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[295] | 146 | extern unsigned int _hba_get_status( unsigned int channel ); |
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[258] | 147 | |
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| 148 | |
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| 149 | #endif |
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| 150 | |
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| 151 | // Local Variables: |
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| 152 | // tab-width: 4 |
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| 153 | // c-basic-offset: 4 |
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| 154 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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| 155 | // indent-tabs-mode: nil |
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| 156 | // End: |
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| 157 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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| 158 | |
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