forked from KolibriOS/kolibrios
569 lines
16 KiB
PHP
569 lines
16 KiB
PHP
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2015. 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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$Revision$
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; HDD driver
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struct HD_DATA
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hdpos dw ?
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hdid dw ?
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hdbase dw ?
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hd48 dw ?
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sectors dq ?
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ends
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;-----------------------------------------------------------------
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iglobal
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align 4
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ide_callbacks:
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dd ide_callbacks.end - ide_callbacks
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dd 0 ; no close function
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dd 0 ; no closemedia function
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dd ide_querymedia
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dd ide_read
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dd ide_write
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dd 0 ; no flush function
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dd 0 ; use default cache size
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.end:
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hd0_data HD_DATA 1, 0
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hd1_data HD_DATA 2, 16
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hd2_data HD_DATA 3, 0
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hd3_data HD_DATA 4, 16
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hd4_data HD_DATA 5, 0
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hd5_data HD_DATA 6, 16
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hd6_data HD_DATA 7, 0
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hd7_data HD_DATA 8, 16
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hd8_data HD_DATA 9, 0
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hd9_data HD_DATA 10, 16
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hd10_data HD_DATA 11, 0
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hd11_data HD_DATA 12, 16
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ide_mutex_table:
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dd ide_channel1_mutex
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dd ide_channel2_mutex
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dd ide_channel3_mutex
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dd ide_channel4_mutex
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dd ide_channel5_mutex
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dd ide_channel6_mutex
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endg
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;-----------------------------------------------------------------
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uglobal
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ide_mutex MUTEX
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ide_channel1_mutex MUTEX
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ide_channel2_mutex MUTEX
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ide_channel3_mutex MUTEX
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ide_channel4_mutex MUTEX
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ide_channel5_mutex MUTEX
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ide_channel6_mutex MUTEX
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blockSize:
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rb 4
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sector:
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rb 6
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allow_dma_access db ?
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IDE_common_irq_param db ?
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eventPointer dd ?
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eventID dd ?
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endg
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;-----------------------------------------------------------------
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ide_read:
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mov al, 25h ; READ DMA EXT
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jmp ide_read_write
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ide_write:
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mov al, 35h ; WRITE DMA EXT
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proc ide_read_write stdcall uses esi edi ebx, \
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hd_data, buffer, startsector:qword, numsectors
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; hd_data = pointer to hd*_data
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; buffer = pointer to buffer with/for data
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; startsector = 64-bit start sector
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; numsectors = pointer to number of sectors on input,
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; must be filled with number of sectors really read/written
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locals
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sectors_todo dd ?
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channel_lock dd ?
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endl
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mov bl, al
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; get number of requested sectors and say that no sectors were read yet
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mov ecx, [numsectors]
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mov eax, [ecx]
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mov dword [ecx], 0
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mov [sectors_todo], eax
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; acquire the global lock
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mov ecx, ide_mutex
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call mutex_lock
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mov ecx, [hd_data]
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movzx ecx, [ecx+HD_DATA.hdpos]
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dec ecx
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shr ecx, 1
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shl ecx, 2
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mov ecx, [ecx + ide_mutex_table]
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mov [channel_lock], ecx
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call mutex_lock
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; prepare worker procedures variables
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mov esi, [buffer]
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mov edi, esi
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mov ecx, [hd_data]
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movzx eax, [ecx+HD_DATA.hdbase]
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mov [hdbase], eax
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mov ax, [ecx+HD_DATA.hdid]
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mov [hdid], eax
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mov eax, dword [startsector]
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mov [sector], eax
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cmp [ecx+HD_DATA.hd48], 0
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jz .LBA28
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mov ax, word [startsector+4]
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mov [sector+4], ax
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movzx ecx, [ecx+HD_DATA.hdpos]
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mov [hdpos], ecx
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dec ecx
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shr ecx, 2
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imul ecx, sizeof.IDE_DATA
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add ecx, IDE_controller_1
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mov [IDE_controller_pointer], ecx
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mov eax, [hdpos]
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dec eax
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and eax, 11b
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shr eax, 1
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add eax, ecx
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cmp [eax+IDE_DATA.dma_hdd_channel_1], 1
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jz .next
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dec ebx ; READ/WRITE SECTOR(S) EXT
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; LBA48 supports max 10000h sectors per time
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; loop until all sectors will be processed
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.next:
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mov ecx, 8000h
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cmp ecx, [sectors_todo]
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jbe @f
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mov ecx, [sectors_todo]
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@@:
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mov [blockSize], ecx
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push ecx
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call IDE_transfer
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pop ecx
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jc .out
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mov eax, [numsectors]
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add [eax], ecx
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sub [sectors_todo], ecx
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jz .out
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add [sector], ecx
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adc word [sector+4], 0
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jmp .next
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.LBA28:
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add eax, [sectors_todo]
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add eax, 0xF0000000
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jc .out
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sub bl, 5 ; READ/WRITE SECTOR(S)
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; LBA28 supports max 256 sectors per time
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; loop until all sectors will be processed
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.next28:
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mov ecx, 256
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cmp ecx, [sectors_todo]
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jbe @f
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mov ecx, [sectors_todo]
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@@:
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mov [blockSize], ecx
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push ecx
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call IDE_transfer.LBA28
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pop ecx
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jc .out
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mov eax, [numsectors]
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add [eax], ecx
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sub [sectors_todo], ecx
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jz .out
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add [sector], ecx
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jmp .next28
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; loop is done, either due to error or because everything is done
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; release the global lock and return the corresponding status
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.out:
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sbb eax, eax
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push eax
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mov ecx, [channel_lock]
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call mutex_unlock
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mov ecx, ide_mutex
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call mutex_unlock
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pop eax
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ret
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endp
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;-----------------------------------------------------------------
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proc ide_querymedia stdcall, hd_data, mediainfo
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mov eax, [mediainfo]
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mov edx, [hd_data]
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mov [eax+DISKMEDIAINFO.Flags], 0
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mov [eax+DISKMEDIAINFO.SectorSize], 512
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mov ecx, dword[edx+HD_DATA.sectors]
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mov dword[eax+DISKMEDIAINFO.Capacity], ecx
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mov ecx, dword[edx+HD_DATA.sectors+4]
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mov dword[eax+DISKMEDIAINFO.Capacity+4], ecx
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xor eax, eax
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ret
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endp
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;-----------------------------------------------------------------
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; input: esi -> buffer, bl = command, [sector], [blockSize]
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; output: esi -> next block in buffer
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; for pio read esi equal edi
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IDE_transfer:
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mov edx, [hdbase]
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add edx, 6
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mov al, byte [hdid]
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add al, 224
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out dx, al ; select the desired drive
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call save_hd_wait_timeout
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inc edx
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@@:
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call check_hd_wait_timeout
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jc .hd_error
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in al, dx
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test al, 128 ; ready for command?
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jnz @b
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pushfd ; fill the ports
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cli
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mov edx, [hdbase]
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inc edx
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inc edx
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mov al, [blockSize+1]
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out dx, al ; Sector count (15:8)
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inc edx
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mov eax, [sector+3]
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out dx, al ; LBA (31:24)
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inc edx
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shr eax, 8
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out dx, al ; LBA (39:32)
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inc edx
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shr eax, 8
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out dx, al ; LBA (47:40)
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sub edx, 3
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mov al, [blockSize]
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out dx, al ; Sector count (7:0)
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inc edx
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mov eax, [sector]
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out dx, al ; LBA (7:0)
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inc edx
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shr eax, 8
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out dx, al ; LBA (15:8)
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inc edx
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shr eax, 8
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out dx, al ; LBA (23:16)
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inc edx
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mov al, byte [hdid]
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add al, 224
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out dx, al
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test bl, 1
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jz .PIO
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; DMA
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mov dword [esp], 0x1000
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call kernel_alloc
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mov edi, eax
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push eax
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shl dword [blockSize], 9
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mov eax, esi
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add eax, [blockSize]
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push eax
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; check buffer pages physical addresses and fill the scatter-gather list
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; buffer may be not aligned and may have size not divisible by page size
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; [edi] = block physical address, [edi+4] = block size in bytes
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; block addresses can not cross 10000h borders
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mov ecx, esi
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and ecx, 0xFFF
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jz .aligned
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mov eax, esi
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call get_pg_addr
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add eax, ecx
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neg ecx
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add ecx, 0x1000
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mov [edi], eax
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cmp ecx, [blockSize]
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jnc .end
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mov [edi+4], ecx
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add esi, 0x1000
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add edi, 8
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sub [blockSize], ecx
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.aligned:
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mov eax, esi
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call get_pg_addr
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mov ecx, eax
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mov [edi], eax
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and ecx, 0xFFFF
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neg ecx
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add ecx, 0x10000
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cmp [blockSize], ecx
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jnc @f
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mov ecx, [blockSize]
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and ecx, 0xF000
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jz .end
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@@:
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push ecx
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@@:
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add esi, 0x1000
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add eax, 0x1000
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sub ecx, 0x1000
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jz @f
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mov edx, eax
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mov eax, esi
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call get_pg_addr
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cmp eax, edx
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jz @b
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@@:
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pop edx
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sub edx, ecx
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mov [edi+4], edx
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add edi, 8
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sub [blockSize], edx
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jnz .aligned
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sub edi, 8
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jmp @f
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.end:
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mov ecx, [blockSize]
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mov [edi+4], ecx
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@@:
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mov byte [edi+7], 80h ; list end
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pop esi
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pop edi
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; select controller Primary or Secondary
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mov ecx, [IDE_controller_pointer]
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mov dx, [ecx+IDE_DATA.RegsBaseAddres]
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mov eax, [hdpos]
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dec eax
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test eax, 10b
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jz @f
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add edx, 8
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@@:
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add edx, 2 ; Bus Master IDE Status register
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mov al, 6
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out dx, al ; clear Error bit and Interrupt bit
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add edx, 2 ; Bus Master IDE PRD Table Address
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mov eax, edi
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call get_pg_addr
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out dx, eax ; send scatter-gather list physical address
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push edx
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mov edx, [hdbase]
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add edx, 7 ; ATACommand
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mov al, bl
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out dx, al ; Start hard drive
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pop edx
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sub edx, 4 ; Bus Master IDE Command register
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mov al, 1 ; set direction
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cmp bl, 35h ; write
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jz @f
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add al, 8 ; read
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@@:
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out dx, al ; Start Bus Master
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mov [IDE_common_irq_param], 14
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mov eax, [hdpos]
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dec eax
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test eax, 10b
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jz @f
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inc [IDE_common_irq_param]
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@@:
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push edi esi ebx
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xor ecx, ecx
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xor esi, esi
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call create_event
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mov [eventPointer], eax
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mov [eventID], edx
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sti
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mov ebx, edx
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mov ecx, 300
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call wait_event_timeout
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test eax, eax
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jnz @f
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dbgstr 'IDE DMA IRQ timeout'
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mov [IDE_common_irq_param], 0
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mov eax, [eventPointer]
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mov ebx, [eventID]
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call destroy_event
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mov [eventPointer], 0
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@@:
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pop ebx esi
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call kernel_free
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cmp [eventPointer], 0
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jz .hd_error
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ret
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.LBA28:
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mov edx, [hdbase]
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add edx, 6
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mov al, byte [hdid]
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add al, 224
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out dx, al ; select the desired drive
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call save_hd_wait_timeout
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inc edx
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@@:
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call check_hd_wait_timeout
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jc .hd_error
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in al, dx
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test al, 128 ; ready for command?
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jnz @b
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pushfd ; fill the ports
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cli
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mov edx, [hdbase]
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inc edx
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inc edx
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mov al, [blockSize]
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out dx, al ; Sector count (7:0)
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inc edx
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mov eax, [sector]
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out dx, al ; LBA (7:0)
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inc edx
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shr eax, 8
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out dx, al ; LBA (15:8)
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inc edx
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shr eax, 8
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out dx, al ; LBA (23:16)
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inc edx
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shr eax, 8
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add al, byte [hdid]
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add al, 224
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out dx, al ; LBA (27:24)
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.PIO:
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inc edx ; ATACommand
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mov al, bl
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out dx, al ; Start hard drive
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popfd
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.sectorTransfer:
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call save_hd_wait_timeout
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in al, dx
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in al, dx
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in al, dx
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in al, dx
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@@:
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call check_hd_wait_timeout
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jc .hd_error
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in al, dx
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test al, 8 ; ready for transfer?
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jz @b
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cmp [hd_setup], 1 ; do not mark error for setup request
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jz @f
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test al, 1 ; previous command ended up with an error
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jnz .pio_error
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@@:
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pushfd
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cli
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cld
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mov ecx, 256
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mov edx, [hdbase]
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cmp bl, 30h
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jnc .write
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rep insw
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jmp @f
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.write:
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rep outsw
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@@:
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popfd
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add edx, 7
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dec dword [blockSize]
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jnz .sectorTransfer
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ret
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.pio_error:
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dbgstr 'IDE PIO transfer error'
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.hd_error:
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cmp bl, 30h
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jnc hd_write_error
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;-----------------------------------------------------------------
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hd_read_error:
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dbgstr 'HD read error'
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stc
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ret
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;-----------------------------------------------------------------
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hd_write_error:
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dbgstr 'HD write error'
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stc
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ret
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;-----------------------------------------------------------------
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save_hd_wait_timeout:
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mov eax, [timer_ticks]
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add eax, 300 ; 3 sec timeout
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mov [hd_wait_timeout], eax
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ret
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;-----------------------------------------------------------------
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check_hd_wait_timeout:
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mov eax, [timer_ticks]
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cmp [hd_wait_timeout], eax
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jc @f
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ret
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@@:
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dbgstr 'IDE device timeout'
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stc
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ret
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;-----------------------------------------------------------------
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align 4
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IDE_irq_14_handler:
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IDE_irq_15_handler:
|
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IDE_common_irq_handler:
|
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; Most of the time, we are here because we have requested
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; a DMA transfer for the corresponding drive.
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; However,
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; a) we can be here because IDE IRQ is shared with some other device,
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; that device has actually raised IRQ,
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; it has nothing to do with IDE;
|
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; b) we can be here because IDE controller just does not want
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; to be silent and reacts to something even though
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; we have, in theory, disabled IRQs.
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; If the interrupt corresponds to our current request,
|
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; remove the interrupt request and raise the event for the waiting code.
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; In the case a), just return zero - not our interrupt.
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; In the case b), remove the interrupt request and hope for the best.
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; DEBUGF 1, 'K : IDE_irq_handler %x\n', [IDE_common_irq_param]:2
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mov ecx, [esp+4]
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mov dx, [ecx+IDE_DATA.RegsBaseAddres]
|
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add edx, 2 ; Bus Master IDE Status register
|
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in al, dx
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test al, 4
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jnz .interrupt_from_primary
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add edx, 8
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in al, dx
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test al, 4
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jnz .interrupt_from_secondary
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xor eax, eax ; not our interrupt
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ret
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|
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.interrupt_from_primary:
|
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out dx, al ; clear Interrupt bit
|
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sub edx, 2
|
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xor eax, eax
|
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out dx, al ; clear Bus Master IDE Command register
|
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mov dx, [ecx+IDE_DATA.BAR0_val]
|
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add edx, 7
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in al, dx ; read status register
|
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cmp [IDE_common_irq_param], 14
|
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jz .raise
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.exit_our:
|
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mov al, 1
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ret
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|
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.interrupt_from_secondary:
|
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out dx, al ; clear Interrupt bit
|
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sub edx, 2
|
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xor eax, eax
|
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out dx, al ; clear Bus Master IDE Command register
|
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mov dx, [ecx+IDE_DATA.BAR2_val]
|
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add edx, 7
|
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in al, dx ; read status register
|
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cmp [IDE_common_irq_param], 15
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jnz .exit_our
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.raise:
|
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cmp ecx, [IDE_controller_pointer]
|
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jnz .exit_our
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pushad
|
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mov eax, [eventPointer]
|
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mov ebx, [eventID]
|
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xor edx, edx
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xor esi, esi
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call raise_event
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popad
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mov al, 1 ; remove the interrupt request
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|
ret
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