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Rev | Author | Line No. | Line |
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2288 | clevermous | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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2455 | mario79 | 3 | ;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;; |
2288 | clevermous | 4 | ;; Distributed under terms of the GNU General Public License ;; |
5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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7 | |||
8 | $Revision: 2455 $ |
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9 | |||
10 | pusha |
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11 | |||
12 | mov eax, [pg_data.pages_free] |
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13 | ; 1/32 |
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14 | shr eax, 5 |
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15 | ; round off up to 8 pages |
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16 | shr eax, 3 |
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17 | shl eax, 3 |
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18 | ; translate pages in butes *4096 |
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19 | shl eax, 12 |
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20 | ; check a upper size of the cache, no more than 1 Mb on the physical device |
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21 | cmp eax, 1024*1024 |
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22 | jbe @f |
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23 | mov eax, 1024*1024 |
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24 | jmp .continue |
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25 | @@: |
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26 | ; check a lower size of the cache, not less than 128 Kb on the physical device |
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27 | cmp eax, 128*1024 |
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28 | jae @f |
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29 | mov eax, 128*1024 |
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30 | @@: |
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31 | .continue: |
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32 | mov [cache_ide0_size], eax |
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33 | mov [cache_ide1_size], eax |
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34 | mov [cache_ide2_size], eax |
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35 | mov [cache_ide3_size], eax |
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36 | xor eax, eax |
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37 | mov [hdd_appl_data], 1;al |
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38 | mov [cd_appl_data], 1 |
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39 | |||
40 | mov ch, [DRIVE_DATA+1] |
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41 | mov cl, ch |
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42 | and cl, 11b |
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43 | je .ide2 |
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44 | mov esi, cache_ide3 |
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45 | call get_cache_ide |
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46 | .ide2: |
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47 | mov cl, ch |
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48 | shr cl, 2 |
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49 | and cl, 11b |
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50 | je .ide1 |
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51 | mov esi, cache_ide2 |
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52 | call get_cache_ide |
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53 | .ide1: |
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54 | mov cl, ch |
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55 | shr cl, 4 |
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56 | and cl, 11b |
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57 | je .ide0 |
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58 | mov esi, cache_ide1 |
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59 | call get_cache_ide |
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60 | .ide0: |
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61 | mov cl, ch |
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62 | shr cl, 6 |
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63 | and cl, 11b |
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64 | je @f |
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65 | mov esi, cache_ide0 |
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66 | call get_cache_ide |
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67 | @@: |
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68 | xor ecx, ecx |
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69 | cmp [NumBiosDisks], ecx |
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70 | jz .endbd |
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71 | mov esi, BiosDiskCaches |
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72 | .loopbd: |
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73 | push ecx |
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74 | movsx ecx, byte [BiosDisksData+ecx*4+2] |
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75 | inc ecx |
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76 | jz .getbd |
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77 | add ecx, ecx |
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78 | movzx eax, byte [DRIVE_DATA+1] |
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79 | shl eax, cl |
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80 | and ah, 3 |
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81 | cmp ah, 1 |
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82 | jz .contbd |
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83 | pop ecx |
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84 | mov byte [BiosDisksData+ecx*4+2], -1 |
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85 | push ecx |
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86 | .getbd: |
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87 | mov eax, [cache_ide0_size] |
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88 | mov [esi+cache_ide0_size-cache_ide0], eax |
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89 | mov cl, 1 |
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90 | call get_cache_ide |
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91 | .contbd: |
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92 | pop ecx |
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93 | add esi, cache_ide1-cache_ide0 |
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94 | inc ecx |
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95 | cmp ecx, [NumBiosDisks] |
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96 | jb .loopbd |
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97 | .endbd: |
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98 | jmp end_get_cache |
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99 | |||
100 | get_cache_ide: |
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101 | and [esi+cache_ide0_search_start-cache_ide0], 0 |
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102 | and [esi+cache_ide0_appl_search_start-cache_ide0], 0 |
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103 | push ecx |
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104 | stdcall kernel_alloc, [esi+cache_ide0_size-cache_ide0] |
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105 | mov [esi+cache_ide0_pointer-cache_ide0], eax |
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106 | pop ecx |
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107 | mov edx, eax |
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108 | mov eax, [esi+cache_ide0_size-cache_ide0] |
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109 | shr eax, 3 |
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110 | mov [esi+cache_ide0_system_data_size-cache_ide0], eax |
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111 | mov ebx, eax |
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112 | imul eax, 7 |
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113 | mov [esi+cache_ide0_appl_data_size-cache_ide0], eax |
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114 | add ebx, edx |
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115 | mov [esi+cache_ide0_data_pointer-cache_ide0], ebx |
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116 | |||
117 | cmp cl, 10b |
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118 | je .cd |
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119 | push ecx |
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120 | mov eax, [esi+cache_ide0_system_data_size-cache_ide0] |
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121 | call calculate_for_hd |
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122 | add eax, [esi+cache_ide0_pointer-cache_ide0] |
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123 | mov [esi+cache_ide0_system_data-cache_ide0], eax |
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124 | mov [esi+cache_ide0_system_sad_size-cache_ide0], ecx |
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125 | |||
126 | push edi |
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127 | mov edi, [esi+cache_ide0_pointer-cache_ide0] |
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128 | call clear_ide_cache |
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129 | pop edi |
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130 | |||
131 | mov eax, [esi+cache_ide0_appl_data_size-cache_ide0] |
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132 | call calculate_for_hd |
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133 | add eax, [esi+cache_ide0_data_pointer-cache_ide0] |
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134 | mov [esi+cache_ide0_appl_data-cache_ide0], eax |
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135 | mov [esi+cache_ide0_appl_sad_size-cache_ide0], ecx |
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136 | |||
137 | push edi |
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138 | mov edi, [esi+cache_ide0_data_pointer-cache_ide0] |
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139 | call clear_ide_cache |
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140 | pop edi |
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141 | |||
142 | pop ecx |
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143 | ret |
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144 | .cd: |
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145 | push ecx |
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146 | mov eax, [esi+cache_ide0_system_data_size-cache_ide0] |
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147 | call calculate_for_cd |
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148 | add eax, [esi+cache_ide0_pointer-cache_ide0] |
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149 | mov [esi+cache_ide0_system_data-cache_ide0], eax |
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150 | mov [esi+cache_ide0_system_sad_size-cache_ide0], ecx |
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151 | |||
152 | push edi |
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153 | mov edi, [esi+cache_ide0_pointer-cache_ide0] |
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154 | call clear_ide_cache |
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155 | pop edi |
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156 | |||
157 | mov eax, [esi+cache_ide0_appl_data_size-cache_ide0] |
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158 | call calculate_for_cd |
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159 | add eax, [esi+cache_ide0_data_pointer-cache_ide0] |
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160 | mov [esi+cache_ide0_appl_data-cache_ide0], eax |
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161 | mov [esi+cache_ide0_appl_sad_size-cache_ide0], ecx |
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162 | |||
163 | push edi |
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164 | mov edi, [esi+cache_ide0_data_pointer-cache_ide0] |
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165 | call clear_ide_cache |
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166 | pop edi |
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167 | |||
168 | pop ecx |
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169 | ret |
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170 | |||
171 | calculate_for_hd: |
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172 | push eax |
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173 | mov ebx, eax |
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174 | shr eax, 9 |
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175 | shl eax, 3 |
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176 | sub ebx, eax |
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177 | shr ebx, 9 |
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178 | mov ecx, ebx |
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179 | shl ebx, 9 |
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180 | pop eax |
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181 | sub eax, ebx |
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182 | dec ecx |
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183 | ret |
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184 | |||
185 | calculate_for_cd: |
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186 | push eax |
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187 | mov ebx, eax |
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188 | shr eax, 11 |
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189 | shl eax, 3 |
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190 | sub ebx, eax |
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191 | shr ebx, 11 |
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192 | mov ecx, ebx |
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193 | shl ebx, 11 |
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194 | pop eax |
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195 | sub eax, ebx |
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196 | dec ecx |
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197 | ret |
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198 | |||
199 | clear_ide_cache: |
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200 | push eax |
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201 | shl ecx, 1 |
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202 | xor eax, eax |
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203 | cld |
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204 | rep stosd |
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205 | pop eax |
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206 | ret |
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207 | |||
208 | end_get_cache: |
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209 | ; mov [cache_ide0_pointer],HD_CACHE |
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210 | ; mov [cache_ide0_system_data],HD_CACHE+65536 |
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211 | ; mov [cache_ide0_system_sad_size],1919 |
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212 | popa |