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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7 | |
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8 | #ifndef _GIET_HBA_DRIVERS_H_ |
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9 | #define _GIET_HBA_DRIVERS_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 | // Data structures for command table array |
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28 | /////////////////////////////////////////////////////////////////////////////////// |
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29 | |
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30 | typedef struct hba_cmd_header_s // size = 128 bytes |
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31 | { |
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32 | // WORD 0 |
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33 | unsigned int res0; // reserved |
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34 | |
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35 | // WORD 1 |
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36 | unsigned char lba0; // LBA 7:0 |
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37 | unsigned char lba1; // LBA 15:8 |
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38 | unsigned char lba2; // LBA 23:16 |
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39 | unsigned char res1; // reserved |
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40 | |
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41 | // WORD 2 |
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42 | unsigned char lba3; // LBA 31:24 |
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43 | unsigned char lba4; // LBA 39:32 |
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44 | unsigned char lba5; // LBA 47:40 |
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45 | unsigned char res2; // reserved |
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46 | |
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47 | // WORD 3 to 31 |
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48 | unsigned int res[29]; // reserved |
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49 | |
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50 | } hba_cmd_header_t; |
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51 | |
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52 | typedef struct hba_cmd_entry_s // size = 16 bytes |
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53 | { |
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54 | unsigned int dba; // Buffer base address 32 LSB bits |
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55 | unsigned int dbau; // Buffer base address 32 MSB bits |
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56 | unsigned int res0; // reserved |
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57 | unsigned int dbc; // Buffer byte count |
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58 | |
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59 | } hba_cmd_entry_t; |
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60 | |
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61 | typedef struct hba_cmd_table_s // size = 256 bytes |
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62 | { |
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63 | |
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64 | hba_cmd_header_t header; // contains LBA |
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65 | hba_cmd_entry_t entry[248]; // 248 buffers max |
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66 | |
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67 | } hba_cmd_table_t; |
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68 | |
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69 | /////////////////////////////////////////////////////////////////////////////////// |
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70 | // Data structures for command list array |
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71 | /////////////////////////////////////////////////////////////////////////////////// |
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72 | |
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73 | typedef struct hba_cmd_desc_s // size = 16 bytes |
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74 | { |
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75 | // WORD 0 |
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76 | unsigned char flag[2]; // W in bit 6 of flag[0] |
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77 | unsigned char prdtl[2]; // Number of buffers |
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78 | |
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79 | // WORD 1 |
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80 | unsigned int prdbc; // Number of bytes actually transfered |
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81 | |
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82 | // WORD 2, WORD 3 |
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83 | unsigned int ctba; // Command Table base address 32 LSB bits |
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84 | unsigned int ctbau; // Command Table base address 32 MSB bits |
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85 | |
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86 | } hba_cmd_desc_t; |
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87 | |
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88 | typedef struct hba_cmd_list_s // size = 512 bytes |
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89 | { |
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90 | // 32 command descriptors |
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91 | hba_cmd_desc_t desc[32]; |
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92 | |
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93 | } hba_cmd_list_t; |
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94 | |
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95 | /////////////////////////////////////////////////////////////////////////////////// |
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96 | // HBA device access functions (vci_hba) |
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97 | /////////////////////////////////////////////////////////////////////////////////// |
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98 | |
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99 | unsigned int _hba_write( unsigned int mode, |
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100 | unsigned int lba, // logic bloc address on device |
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101 | void* buffer, // memory buffer base address |
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102 | unsigned int count ); // number of blocs |
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103 | |
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104 | unsigned int _hba_read ( unsigned int mode, |
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105 | unsigned int lba, // logic bloc address on device |
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106 | void* buffer, // memory buffer base address |
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107 | unsigned int count ); // number of blocks |
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108 | |
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109 | unsigned int _hba_init ( unsigned int channel ); |
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110 | |
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111 | unsigned int _hba_get_status( unsigned int channel, |
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112 | unsigned int* status ); |
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113 | |
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114 | unsigned int _hba_reset_status( unsigned int channel ); |
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115 | |
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116 | unsigned int _hba_get_block_size (); |
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117 | |
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118 | |
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119 | #endif |
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120 | |
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121 | // Local Variables: |
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122 | // tab-width: 4 |
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123 | // c-basic-offset: 4 |
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124 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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125 | // indent-tabs-mode: nil |
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126 | // End: |
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127 | // vim: filetype=c:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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128 | |
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