forked from KolibriOS/kolibrios
210 lines
5.9 KiB
PHP
210 lines
5.9 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 4711 $
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;-----------------------------------------------------------------------------
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pusha
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mov eax, [pg_data.pages_free]
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; 1/32
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shr eax, 5
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; round off up to 8 pages
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shr eax, 3
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shl eax, 3
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; translate pages in butes *4096
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shl eax, 12
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; check a upper size of the cache, no more than 1 Mb on the physical device
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cmp eax, 1024*1024
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jbe @f
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mov eax, 1024*1024
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jmp .continue
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;--------------------------------------
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@@:
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; check a lower size of the cache, not less than 128 Kb on the physical device
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cmp eax, 128*1024
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jae .continue
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mov eax, 128*1024
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;--------------------------------------
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.continue:
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push ecx
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mov ecx, 12
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mov esi, cache_ide0+IDE_CACHE.size
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cld
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@@:
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mov [esi], eax
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add esi, sizeof.IDE_CACHE
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loop @b
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pop ecx
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xor eax, eax
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mov [hdd_appl_data], 1 ;al
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mov [cd_appl_data], 1
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;--------------------------------------
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test byte [DRIVE_DATA+1], 0x80
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je @f
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mov esi, cache_ide0
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+1], 0x20
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je @f
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mov esi, cache_ide1
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+1], 8
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je @f
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mov esi, cache_ide2
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+1], 2
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je @f
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mov esi, cache_ide3
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+6], 0x80
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je @f
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mov esi, cache_ide4
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+6], 0x20
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je @f
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mov esi, cache_ide5
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+6], 8
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je @f
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mov esi, cache_ide6
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+6], 2
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je @f
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mov esi, cache_ide7
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+11], 0x80
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je @f
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mov esi, cache_ide8
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+11], 0x20
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je @f
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mov esi, cache_ide9
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+11], 8
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je @f
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mov esi, cache_ide10
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call get_cache_ide
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;--------------------------------------
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@@:
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test byte [DRIVE_DATA+11], 2
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je end_get_cache
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mov esi, cache_ide11
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call get_cache_ide
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jmp end_get_cache
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;-----------------------------------------------------------------------------
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get_cache_ide:
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and [esi+IDE_CACHE.search_start], 0
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and [esi+IDE_CACHE.appl_search_start], 0
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push ecx
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; DEBUGF 1, "K : IDE_CACHE.size %x\n", [esi+IDE_CACHE.size]
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stdcall kernel_alloc, [esi+IDE_CACHE.size]
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mov [esi+IDE_CACHE.pointer], eax
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pop ecx
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mov edx, eax
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mov eax, [esi+IDE_CACHE.size]
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shr eax, 3
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; DEBUGF 1, "K : IDE_CACHE.system_data_size %x\n", eax
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mov [esi+IDE_CACHE.system_data_size], eax
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mov ebx, eax
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imul eax, 7
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; DEBUGF 1, "K : IDE_CACHE.appl_data_size %x\n", eax
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mov [esi+IDE_CACHE.appl_data_size], eax
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add ebx, edx
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mov [esi+IDE_CACHE.data_pointer], ebx
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.cd:
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push ecx
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mov eax, [esi+IDE_CACHE.system_data_size]
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call calculate_for_cd
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add eax, [esi+IDE_CACHE.pointer]
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mov [esi+IDE_CACHE.system_data], eax
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mov [esi+IDE_CACHE.system_sad_size], ecx
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push edi
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mov edi, [esi+IDE_CACHE.pointer]
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call clear_ide_cache
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pop edi
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mov eax, [esi+IDE_CACHE.appl_data_size]
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call calculate_for_cd
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add eax, [esi+IDE_CACHE.data_pointer]
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mov [esi+IDE_CACHE.appl_data], eax
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mov [esi+IDE_CACHE.appl_sad_size], ecx
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push edi
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mov edi, [esi+IDE_CACHE.data_pointer]
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call clear_ide_cache
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pop edi
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pop ecx
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ret
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;-----------------------------------------------------------------------------
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calculate_for_cd:
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push eax
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mov ebx, eax
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shr eax, 11
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shl eax, 3
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sub ebx, eax
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shr ebx, 11
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mov ecx, ebx
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shl ebx, 11
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pop eax
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sub eax, ebx
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dec ecx
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ret
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;-----------------------------------------------------------------------------
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clear_ide_cache:
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push eax
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shl ecx, 1
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xor eax, eax
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cld
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rep stosd
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pop eax
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ret
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;-----------------------------------------------------------------------------
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end_get_cache:
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popa
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