1 | ; Project name : XTIDE Universal BIOS |
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2 | ; Description : IDE Read/Write functions for transferring block using PIO modes. |
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3 | ; These functions should only be called from IdeTransfer.asm. |
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4 | |
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5 | ; |
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6 | ; XTIDE Universal BIOS and Associated Tools |
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7 | ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2013 by XTIDE Universal BIOS Team. |
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8 | ; |
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9 | ; This program is free software; you can redistribute it and/or modify |
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10 | ; it under the terms of the GNU General Public License as published by |
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11 | ; the Free Software Foundation; either version 2 of the License, or |
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12 | ; (at your option) any later version. |
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13 | ; |
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14 | ; This program is distributed in the hope that it will be useful, |
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15 | ; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | ; GNU General Public License for more details. |
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18 | ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html |
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19 | ; |
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20 | |
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21 | ; Section containing code |
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22 | SECTION .text |
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23 | |
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24 | |
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25 | ; -------------------------------------------------------------------------------------------------- |
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26 | ; |
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27 | ; READ routines follow |
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28 | ; |
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29 | ; -------------------------------------------------------------------------------------------------- |
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30 | |
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31 | %ifdef MODULE_8BIT_IDE |
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32 | ;-------------------------------------------------------------------- |
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33 | ; IdePioBlock_ReadFromXtideRev1 |
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34 | ; Parameters: |
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35 | ; CX: Block size in 512 byte sectors |
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36 | ; DX: IDE Data port address |
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37 | ; ES:DI: Normalized ptr to buffer to receive data |
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38 | ; Returns: |
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39 | ; Nothing |
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40 | ; Corrupts registers: |
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41 | ; AX, BX, CX |
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42 | ;-------------------------------------------------------------------- |
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43 | ALIGN JUMP_ALIGN |
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44 | IdePioBlock_ReadFromXtideRev1: |
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45 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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46 | UNROLL_SECTORS_IN_CX_TO_32WORDS |
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47 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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48 | UNROLL_SECTORS_IN_CX_TO_16WORDS |
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49 | %else |
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50 | UNROLL_SECTORS_IN_CX_TO_OWORDS |
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51 | %endif |
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52 | mov bl, 8 ; Bit mask for toggling data low/high reg |
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53 | ALIGN JUMP_ALIGN |
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54 | .NextIteration: |
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55 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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56 | %rep 32 ; WORDs |
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57 | XTIDE_INSW |
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58 | %endrep |
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59 | dec cx |
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60 | %ifdef USE_386 |
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61 | jnz .NextIteration |
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62 | %else |
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63 | jz SHORT .BlockTransferred |
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64 | jmp .NextIteration |
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65 | |
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66 | ALIGN JUMP_ALIGN |
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67 | .BlockTransferred: |
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68 | %endif |
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69 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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70 | %rep 16 ; WORDs |
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71 | XTIDE_INSW |
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72 | %endrep |
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73 | %ifdef USE_186 |
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74 | loop .NextIteration |
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75 | %else |
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76 | dec cx |
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77 | jz SHORT .BlockTransferred |
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78 | jmp .NextIteration |
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79 | |
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80 | ALIGN JUMP_ALIGN |
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81 | .BlockTransferred: |
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82 | %endif |
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83 | %else |
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84 | %rep 8 ; WORDs |
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85 | XTIDE_INSW |
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86 | %endrep |
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87 | loop .NextIteration |
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88 | %endif |
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89 | ret |
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90 | |
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91 | |
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92 | ;-------------------------------------------------------------------- |
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93 | ; IdePioBlock_ReadFromXtideRev2_Olivetti |
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94 | ; Parameters: |
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95 | ; CX: Block size in 512 byte sectors |
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96 | ; DX: IDE Data port address |
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97 | ; ES:DI: Normalized ptr to buffer to receive data |
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98 | ; Returns: |
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99 | ; Nothing |
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100 | ; Corrupts registers: |
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101 | ; AX, CX |
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102 | ;-------------------------------------------------------------------- |
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103 | ALIGN JUMP_ALIGN |
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104 | IdePioBlock_ReadFromXtideRev2_Olivetti: |
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105 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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106 | UNROLL_SECTORS_IN_CX_TO_32WORDS |
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107 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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108 | UNROLL_SECTORS_IN_CX_TO_16WORDS |
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109 | %else |
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110 | UNROLL_SECTORS_IN_CX_TO_OWORDS |
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111 | %endif |
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112 | ALIGN JUMP_ALIGN |
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113 | .NextIteration: |
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114 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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115 | %rep 32 ; WORDs |
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116 | XTIDE_MOD_OLIVETTI_INSW |
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117 | %endrep |
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118 | dec cx |
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119 | %ifdef USE_386 |
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120 | jnz .NextIteration |
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121 | %else |
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122 | jz SHORT .BlockTransferred |
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123 | jmp .NextIteration |
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124 | |
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125 | ALIGN JUMP_ALIGN |
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126 | .BlockTransferred: |
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127 | %endif |
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128 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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129 | %rep 16 ; WORDs |
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130 | XTIDE_MOD_OLIVETTI_INSW |
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131 | %endrep |
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132 | loop .NextIteration |
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133 | %else |
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134 | %rep 8 ; WORDs |
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135 | XTIDE_MOD_OLIVETTI_INSW |
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136 | %endrep |
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137 | loop .NextIteration |
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138 | %endif |
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139 | ret |
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140 | |
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141 | |
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142 | ;-------------------------------------------------------------------- |
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143 | ; 8-bit PIO from a single data port. |
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144 | ; |
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145 | ; IdePioBlock_ReadFrom8bitDataPort |
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146 | ; Parameters: |
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147 | ; CX: Block size in 512 byte sectors |
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148 | ; DX: IDE Data port address |
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149 | ; ES:DI: Normalized ptr to buffer to receive data |
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150 | ; Returns: |
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151 | ; Nothing |
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152 | ; Corrupts registers: |
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153 | ; AX, CX |
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154 | ;-------------------------------------------------------------------- |
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155 | ALIGN JUMP_ALIGN |
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156 | IdePioBlock_ReadFrom8bitDataPort: |
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157 | %ifdef USE_186 |
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158 | shl cx, 9 ; Sectors to BYTEs |
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159 | rep insb |
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160 | ret |
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161 | |
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162 | %else ; 808x |
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163 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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164 | UNROLL_SECTORS_IN_CX_TO_32WORDS |
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165 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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166 | UNROLL_SECTORS_IN_CX_TO_16WORDS |
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167 | %else |
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168 | UNROLL_SECTORS_IN_CX_TO_OWORDS |
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169 | %endif |
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170 | ALIGN JUMP_ALIGN |
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171 | .NextIteration: |
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172 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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173 | %rep 64 ; BYTEs |
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174 | in al, dx ; Read BYTE |
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175 | stosb ; Store BYTE to [ES:DI] |
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176 | %endrep |
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177 | dec cx |
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178 | jz SHORT .BlockTransferred |
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179 | jmp .NextIteration |
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180 | |
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181 | ALIGN JUMP_ALIGN |
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182 | .BlockTransferred: |
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183 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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184 | %rep 32 ; BYTEs |
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185 | in al, dx ; Read BYTE |
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186 | stosb ; Store BYTE to [ES:DI] |
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187 | %endrep |
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188 | loop .NextIteration |
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189 | %else |
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190 | %rep 16 ; BYTEs |
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191 | in al, dx ; Read BYTE |
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192 | stosb ; Store BYTE to [ES:DI] |
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193 | %endrep |
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194 | loop .NextIteration |
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195 | %endif |
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196 | ret |
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197 | %endif |
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198 | %endif ; MODULE_8BIT_IDE |
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199 | |
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200 | |
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201 | ;-------------------------------------------------------------------- |
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202 | ; 16-bit and 32-bit PIO from a single data port. |
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203 | ; |
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204 | ; IdePioBlock_ReadFrom16bitDataPort |
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205 | ; IdePioBlock_ReadFrom32bitDataPort |
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206 | ; Parameters: |
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207 | ; CX: Block size in 512 byte sectors |
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208 | ; DX: IDE Data port address |
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209 | ; ES:DI: Normalized ptr to buffer to receive data |
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210 | ; Returns: |
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211 | ; Nothing |
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212 | ; Corrupts registers: |
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213 | ; AX, CX |
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214 | ;-------------------------------------------------------------------- |
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215 | ALIGN JUMP_ALIGN |
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216 | IdePioBlock_ReadFrom16bitDataPort: |
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217 | %ifdef USE_186 |
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218 | xchg cl, ch ; Sectors to WORDs |
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219 | rep insw |
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220 | ret |
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221 | |
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222 | %else ; 808x |
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223 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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224 | UNROLL_SECTORS_IN_CX_TO_32WORDS |
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225 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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226 | UNROLL_SECTORS_IN_CX_TO_16WORDS |
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227 | %else |
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228 | UNROLL_SECTORS_IN_CX_TO_OWORDS |
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229 | %endif |
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230 | ALIGN JUMP_ALIGN |
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231 | .NextIteration: |
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232 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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233 | %rep 32 ; WORDs |
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234 | in ax, dx ; Read WORD |
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235 | stosw ; Store WORD to [ES:DI] |
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236 | %endrep |
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237 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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238 | %rep 16 ; WORDs |
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239 | in ax, dx ; Read WORD |
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240 | stosw ; Store WORD to [ES:DI] |
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241 | %endrep |
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242 | %else |
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243 | %rep 8 ; WORDs |
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244 | in ax, dx ; Read WORD |
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245 | stosw ; Store WORD to [ES:DI] |
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246 | %endrep |
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247 | %endif |
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248 | loop .NextIteration |
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249 | ret |
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250 | %endif |
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251 | |
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252 | |
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253 | ;-------------------------------------------------------------------- |
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254 | %ifdef MODULE_ADVANCED_ATA |
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255 | ALIGN JUMP_ALIGN |
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256 | IdePioBlock_ReadFrom32bitDataPort: |
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257 | shl cx, 7 ; Sectors to DWORDs |
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258 | rep insd |
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259 | ret |
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260 | %endif ; MODULE_ADVANCED_ATA |
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261 | |
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262 | |
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263 | ; -------------------------------------------------------------------------------------------------- |
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264 | ; |
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265 | ; WRITE routines follow |
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266 | ; |
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267 | ; -------------------------------------------------------------------------------------------------- |
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268 | |
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269 | %ifdef MODULE_8BIT_IDE |
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270 | ;-------------------------------------------------------------------- |
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271 | ; IdePioBlock_WriteToXtideRev1 |
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272 | ; Parameters: |
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273 | ; CX: Block size in 512-byte sectors |
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274 | ; DX: IDE Data port address |
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275 | ; DS:SI: Normalized ptr to buffer containing data |
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276 | ; Returns: |
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277 | ; Nothing |
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278 | ; Corrupts registers: |
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279 | ; AX, BX, CX |
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280 | ;-------------------------------------------------------------------- |
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281 | ALIGN JUMP_ALIGN |
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282 | IdePioBlock_WriteToXtideRev1: |
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283 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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284 | UNROLL_SECTORS_IN_CX_TO_16WORDS |
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285 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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286 | UNROLL_SECTORS_IN_CX_TO_OWORDS |
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287 | %else |
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288 | UNROLL_SECTORS_IN_CX_TO_QWORDS |
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289 | %endif |
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290 | mov bl, 8 ; Bit mask for toggling data low/high reg |
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291 | ALIGN JUMP_ALIGN |
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292 | .NextIteration: |
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293 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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294 | %rep 16 ; WORDs |
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295 | XTIDE_OUTSW |
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296 | %endrep |
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297 | %ifdef USE_186 |
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298 | loop .NextIteration |
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299 | %else |
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300 | dec cx |
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301 | jz SHORT .BlockTransferred |
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302 | jmp .NextIteration |
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303 | |
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304 | ALIGN JUMP_ALIGN |
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305 | .BlockTransferred: |
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306 | %endif |
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307 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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308 | %rep 8 ; WORDs |
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309 | XTIDE_OUTSW |
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310 | %endrep |
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311 | loop .NextIteration |
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312 | %else |
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313 | %rep 4 ; WORDs |
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314 | XTIDE_OUTSW |
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315 | %endrep |
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316 | loop .NextIteration |
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317 | %endif |
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318 | ret |
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319 | |
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320 | |
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321 | ;-------------------------------------------------------------------- |
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322 | ; IdePioBlock_WriteToXtideRev2 or rev 1 with swapped A0 and A3 (chuck-mod) |
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323 | ; Parameters: |
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324 | ; CX: Block size in 512-byte sectors |
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325 | ; DX: IDE Data port address |
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326 | ; DS:SI: Normalized ptr to buffer containing data |
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327 | ; Returns: |
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328 | ; Nothing |
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329 | ; Corrupts registers: |
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330 | ; AX, CX |
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331 | ;-------------------------------------------------------------------- |
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332 | ALIGN JUMP_ALIGN |
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333 | IdePioBlock_WriteToXtideRev2: |
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334 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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335 | UNROLL_SECTORS_IN_CX_TO_16WORDS |
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336 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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337 | UNROLL_SECTORS_IN_CX_TO_OWORDS |
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338 | %else |
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339 | UNROLL_SECTORS_IN_CX_TO_QWORDS |
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340 | %endif |
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341 | ALIGN JUMP_ALIGN |
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342 | .NextIteration: |
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343 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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344 | %rep 16 ; WORDs |
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345 | XTIDE_MOD_OUTSW |
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346 | %endrep |
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347 | %ifdef USE_186 |
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348 | loop .NextIteration |
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349 | %else |
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350 | dec cx |
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351 | jz SHORT .BlockTransferred |
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352 | jmp .NextIteration |
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353 | |
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354 | ALIGN JUMP_ALIGN |
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355 | .BlockTransferred: |
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356 | %endif |
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357 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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358 | %rep 8 ; WORDs |
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359 | XTIDE_MOD_OUTSW |
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360 | %endrep |
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361 | loop .NextIteration |
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362 | %else |
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363 | %rep 4 ; WORDs |
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364 | XTIDE_MOD_OUTSW |
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365 | %endrep |
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366 | loop .NextIteration |
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367 | %endif |
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368 | ret |
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369 | |
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370 | |
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371 | ;-------------------------------------------------------------------- |
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372 | ; IdePioBlock_WriteTo8bitDataPort |
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373 | ; Parameters: |
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374 | ; CX: Block size in 512-byte sectors |
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375 | ; DX: IDE Data port address |
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376 | ; DS:SI: Normalized ptr to buffer containing data |
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377 | ; Returns: |
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378 | ; Nothing |
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379 | ; Corrupts registers: |
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380 | ; AX, CX |
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381 | ;-------------------------------------------------------------------- |
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382 | ALIGN JUMP_ALIGN |
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383 | IdePioBlock_WriteTo8bitDataPort: |
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384 | %ifdef USE_186 |
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385 | shl cx, 9 ; Sectors to BYTEs |
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386 | rep outsb |
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387 | ret |
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388 | |
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389 | %else ; 808x |
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390 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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391 | UNROLL_SECTORS_IN_CX_TO_16WORDS |
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392 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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393 | UNROLL_SECTORS_IN_CX_TO_OWORDS |
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394 | %else |
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395 | UNROLL_SECTORS_IN_CX_TO_QWORDS |
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396 | %endif |
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397 | ALIGN JUMP_ALIGN |
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398 | .NextIteration: |
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399 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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400 | %rep 32 ; BYTEs |
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401 | lodsb ; Load BYTE from [DS:SI] |
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402 | out dx, al ; Write BYTE |
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403 | %endrep |
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404 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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405 | %rep 16 ; BYTEs |
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406 | lodsb ; Load BYTE from [DS:SI] |
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407 | out dx, al ; Write BYTE |
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408 | %endrep |
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409 | %else |
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410 | %rep 8 ; BYTEs |
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411 | lodsb ; Load BYTE from [DS:SI] |
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412 | out dx, al ; Write BYTE |
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413 | %endrep |
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414 | %endif |
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415 | loop .NextIteration |
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416 | ret |
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417 | %endif |
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418 | %endif ; MODULE_8BIT_IDE |
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419 | |
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420 | |
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421 | ;-------------------------------------------------------------------- |
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422 | ; IdePioBlock_WriteTo16bitDataPort Normal 16-bit IDE, XT-CFv3 in BIU Mode |
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423 | ; IdePioBlock_WriteTo32bitDataPort VLB/PCI 32-bit IDE |
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424 | ; Parameters: |
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425 | ; CX: Block size in 512-byte sectors |
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426 | ; DX: IDE Data port address |
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427 | ; DS:SI: Normalized ptr to buffer containing data |
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428 | ; Returns: |
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429 | ; Nothing |
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430 | ; Corrupts registers: |
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431 | ; AX, CX |
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432 | ;-------------------------------------------------------------------- |
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433 | ALIGN JUMP_ALIGN |
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434 | IdePioBlock_WriteTo16bitDataPort: |
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435 | %ifdef USE_186 |
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436 | xchg cl, ch ; Sectors to WORDs |
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437 | rep outsw |
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438 | ret |
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439 | |
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440 | %else ; 808x |
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441 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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442 | UNROLL_SECTORS_IN_CX_TO_16WORDS |
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443 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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444 | UNROLL_SECTORS_IN_CX_TO_OWORDS |
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445 | %else |
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446 | UNROLL_SECTORS_IN_CX_TO_QWORDS |
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447 | %endif |
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448 | ALIGN JUMP_ALIGN |
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449 | .NextIteration: |
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450 | %ifdef EXTRA_LOOP_UNROLLING_LARGE |
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451 | %rep 16 ; WORDs |
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452 | lodsw ; Load WORD from [DS:SI] |
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453 | out dx, ax ; Write WORD |
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454 | %endrep |
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455 | %elifdef EXTRA_LOOP_UNROLLING_SMALL |
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456 | %rep 8 ; WORDs |
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457 | lodsw ; Load WORD from [DS:SI] |
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458 | out dx, ax ; Write WORD |
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459 | %endrep |
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460 | %else |
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461 | %rep 4 ; WORDs |
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462 | lodsw ; Load WORD from [DS:SI] |
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463 | out dx, ax ; Write WORD |
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464 | %endrep |
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465 | %endif |
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466 | loop .NextIteration |
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467 | ret |
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468 | %endif |
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469 | |
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470 | ;-------------------------------------------------------------------- |
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471 | %ifdef MODULE_ADVANCED_ATA |
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472 | ALIGN JUMP_ALIGN |
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473 | IdePioBlock_WriteTo32bitDataPort: |
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474 | shl cx, 7 ; Sectors to DWORDs |
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475 | rep outsd |
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476 | ret |
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477 | %endif ; MODULE_ADVANCED_ATA |
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