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Rev | Author | Line No. | Line |
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750 | victor | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;; |
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4 | ;; Distributed under terms of the GNU General Public License ;; |
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5 | ;; ;; |
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6 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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593 | mikedld | 7 | |
750 | victor | 8 | $Revision: 750 $ |
593 | mikedld | 9 | |
580 | mario79 | 10 | pusha |
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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585 | mario79 | 20 | ; check a upper size of the cache, no more than 1 Mb on the physical device |
580 | mario79 | 21 | cmp eax,1024*1024 |
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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585 | mario79 | 26 | ; check a lower size of the cache, not less than 128 Kb on the physical device |
580 | mario79 | 27 | cmp eax,128*1024 |
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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585 | mario79 | 38 | mov [cd_appl_data],1 |
580 | mario79 | 39 | |
709 | diamond | 40 | mov ch,[DRIVE_DATA+1] |
41 | mov cl,ch |
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580 | mario79 | 42 | and cl,11b |
585 | mario79 | 43 | je .ide2 |
709 | diamond | 44 | mov esi,cache_ide3 |
45 | call get_cache_ide |
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580 | mario79 | 46 | .ide2: |
47 | mov cl,ch |
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709 | diamond | 48 | shr cl,2 |
49 | and cl,11b |
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585 | mario79 | 50 | je .ide1 |
709 | diamond | 51 | mov esi,cache_ide2 |
52 | call get_cache_ide |
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580 | mario79 | 53 | .ide1: |
54 | mov cl,ch |
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709 | diamond | 55 | shr cl,4 |
56 | and cl,11b |
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585 | mario79 | 57 | je .ide0 |
709 | diamond | 58 | mov esi,cache_ide1 |
59 | call get_cache_ide |
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580 | mario79 | 60 | .ide0: |
61 | mov cl,ch |
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709 | diamond | 62 | shr cl,6 |
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 | cmp byte [BiosDisksData+ecx*4+2],-1 |
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74 | jnz .contbd |
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75 | mov eax,[cache_ide0_size] |
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76 | mov [esi+cache_ide0_size-cache_ide0],eax |
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580 | mario79 | 77 | push ecx |
709 | diamond | 78 | mov cl,1 |
79 | call get_cache_ide |
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580 | mario79 | 80 | pop ecx |
709 | diamond | 81 | .contbd: |
82 | add esi,cache_ide1-cache_ide0 |
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83 | inc ecx |
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84 | cmp ecx,[NumBiosDisks] |
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85 | jb .loopbd |
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86 | .endbd: |
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87 | jmp end_get_cache |
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580 | mario79 | 88 | |
709 | diamond | 89 | get_cache_ide: |
90 | and [esi+cache_ide0_search_start-cache_ide0],0 |
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91 | and [esi+cache_ide0_appl_search_start-cache_ide0],0 |
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580 | mario79 | 92 | push ecx |
709 | diamond | 93 | stdcall kernel_alloc,[esi+cache_ide0_size-cache_ide0] |
94 | mov [esi+cache_ide0_pointer-cache_ide0],eax |
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580 | mario79 | 95 | pop ecx |
96 | mov edx,eax |
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709 | diamond | 97 | mov eax,[esi+cache_ide0_size-cache_ide0] |
580 | mario79 | 98 | shr eax,3 |
709 | diamond | 99 | mov [esi+cache_ide0_system_data_size-cache_ide0],eax |
580 | mario79 | 100 | mov ebx,eax |
101 | imul eax,7 |
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709 | diamond | 102 | mov [esi+cache_ide0_appl_data_size-cache_ide0],eax |
580 | mario79 | 103 | add ebx,edx |
709 | diamond | 104 | mov [esi+cache_ide0_data_pointer-cache_ide0],ebx |
585 | mario79 | 105 | |
580 | mario79 | 106 | cmp cl,10b |
585 | mario79 | 107 | je .cd |
580 | mario79 | 108 | push ecx |
709 | diamond | 109 | mov eax,[esi+cache_ide0_system_data_size-cache_ide0] |
580 | mario79 | 110 | call calculate_for_hd |
709 | diamond | 111 | add eax,[esi+cache_ide0_pointer-cache_ide0] |
112 | mov [esi+cache_ide0_system_data-cache_ide0],eax |
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113 | mov [esi+cache_ide0_system_sad_size-cache_ide0],ecx |
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580 | mario79 | 114 | |
115 | push edi |
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709 | diamond | 116 | mov edi,[esi+cache_ide0_pointer-cache_ide0] |
580 | mario79 | 117 | call clear_ide_cache |
118 | pop edi |
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119 | |||
709 | diamond | 120 | mov eax,[esi+cache_ide0_appl_data_size-cache_ide0] |
580 | mario79 | 121 | call calculate_for_hd |
709 | diamond | 122 | add eax,[esi+cache_ide0_data_pointer-cache_ide0] |
123 | mov [esi+cache_ide0_appl_data-cache_ide0],eax |
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124 | mov [esi+cache_ide0_appl_sad_size-cache_ide0],ecx |
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585 | mario79 | 125 | |
580 | mario79 | 126 | push edi |
709 | diamond | 127 | mov edi,[esi+cache_ide0_data_pointer-cache_ide0] |
580 | mario79 | 128 | call clear_ide_cache |
129 | pop edi |
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585 | mario79 | 130 | |
580 | mario79 | 131 | pop ecx |
132 | ret |
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133 | .cd: |
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134 | push ecx |
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709 | diamond | 135 | mov eax,[esi+cache_ide0_system_data_size-cache_ide0] |
580 | mario79 | 136 | call calculate_for_cd |
709 | diamond | 137 | add eax,[esi+cache_ide0_pointer-cache_ide0] |
138 | mov [esi+cache_ide0_system_data-cache_ide0],eax |
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139 | mov [esi+cache_ide0_system_sad_size-cache_ide0],ecx |
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580 | mario79 | 140 | |
141 | push edi |
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709 | diamond | 142 | mov edi,[esi+cache_ide0_pointer-cache_ide0] |
580 | mario79 | 143 | call clear_ide_cache |
144 | pop edi |
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145 | |||
709 | diamond | 146 | mov eax,[esi+cache_ide0_appl_data_size-cache_ide0] |
580 | mario79 | 147 | call calculate_for_cd |
709 | diamond | 148 | add eax,[esi+cache_ide0_data_pointer-cache_ide0] |
149 | mov [esi+cache_ide0_appl_data-cache_ide0],eax |
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150 | mov [esi+cache_ide0_appl_sad_size-cache_ide0],ecx |
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585 | mario79 | 151 | |
580 | mario79 | 152 | push edi |
709 | diamond | 153 | mov edi,[esi+cache_ide0_data_pointer-cache_ide0] |
580 | mario79 | 154 | call clear_ide_cache |
155 | pop edi |
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585 | mario79 | 156 | |
580 | mario79 | 157 | pop ecx |
158 | ret |
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159 | |||
160 | calculate_for_hd: |
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161 | push eax |
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162 | mov ebx,eax |
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163 | shr eax,9 |
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164 | shl eax,3 |
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165 | sub ebx,eax |
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166 | shr ebx,9 |
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167 | mov ecx,ebx |
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168 | shl ebx,9 |
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169 | pop eax |
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170 | sub eax,ebx |
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584 | mario79 | 171 | dec ecx |
580 | mario79 | 172 | ret |
173 | |||
174 | calculate_for_cd: |
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175 | push eax |
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176 | mov ebx,eax |
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177 | shr eax,11 |
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178 | shl eax,3 |
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179 | sub ebx,eax |
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180 | shr ebx,11 |
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181 | mov ecx,ebx |
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182 | shl ebx,11 |
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183 | pop eax |
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184 | sub eax,ebx |
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584 | mario79 | 185 | dec ecx |
580 | mario79 | 186 | ret |
585 | mario79 | 187 | |
580 | mario79 | 188 | clear_ide_cache: |
189 | push eax |
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190 | shl ecx,1 |
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191 | xor eax,eax |
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192 | cld |
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193 | rep stosd |
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194 | pop eax |
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195 | ret |
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585 | mario79 | 196 | |
580 | mario79 | 197 | end_get_cache: |
198 | ; mov [cache_ide0_pointer],HD_CACHE |
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199 | ; mov [cache_ide0_system_data],HD_CACHE+65536 |
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200 | ; mov [cache_ide0_system_sad_size],1919 |
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201 | popa |