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kolibrios/kernel/trunk/blkdev/cd_drv.inc
Rustem Gimadutdinov (rgimad) d1e7997956 translate russian comments to english #5, no code changes 
git-svn-id: svn://kolibrios.org@8054 a494cfbc-eb01-0410-851d-a64ba20cac60
2020-07-30 22:28:57 +00:00

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2015. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$Revision$
;-----------------------------------------------------------------------------
;**********************************************************
; Direct work with CD (ATAPI) device
;**********************************************************
; Author of a part of the source code - Kulakov Vladimir Gennadievich
; Adaptation, revision and development - Mario79, <Lrz>
; Maximum number of repeats of a read operation
MaxRetr = 10
; Maximum waiting time for ready to receive a command
; (in ticks)
BSYWaitTime = 1000 ;2
NoTickWaitTime = 0xfffff
CDBlockSize = 2048
;********************************************
;* READING SECTOR WITH REPEATS *
;* Repeated reads on failures *
;********************************************
ReadCDWRetr:
;-----------------------------------------------------------
; input : eax = block to read
; ebx = destination
;-----------------------------------------------------------
pushad
mov eax, [CDSectorAddress]
mov ebx, [CDDataBuf_pointer]
call cd_calculate_cache
xor edi, edi
add esi, 8
inc edi
;--------------------------------------
align 4
.hdreadcache:
cmp [esi], eax ; correct sector
je .yeshdcache
add esi, 8
inc edi
dec ecx
jnz .hdreadcache
call find_empty_slot_CD_cache ; ret in edi
push edi
push eax
call cd_calculate_cache_2
shl edi, 11
add edi, eax
mov [CDDataBuf_pointer], edi
pop eax
pop edi
call ReadCDWRetr_1
cmp [DevErrorCode], 0
jne .exit
mov [CDDataBuf_pointer], ebx
call cd_calculate_cache_1
lea esi, [edi*8+esi]
mov [esi], eax ; sector number
;--------------------------------------
.yeshdcache:
mov esi, edi
shl esi, 11 ;9
push eax
call cd_calculate_cache_2
add esi, eax
pop eax
mov edi, ebx ;[CDDataBuf_pointer]
mov ecx, 512 ;/4
cld
rep movsd ; move data
;--------------------------------------
.exit:
popad
ret
;-----------------------------------------------------------------------------
ReadCDWRetr_1:
pushad
; Loop until the command is successful or the number of attempts is over
mov ecx, MaxRetr
;--------------------------------------
align 4
@@NextRetr:
; Send a command
;*************************************************
;* FULL READ OF COMPACT DISK SECTOR *
;* User data, subchannel *
;* information and control information are read *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disc number on channel; *
;* CDSectorAddress - address of reading sector. *
;* The data is read into the CDDataBuf array. *
;*************************************************
;ReadCD:
push ecx
; Flush the packet command buffer
call clear_packet_buffer
; Generate a packet command to read a data sector
; Set the command code Read CD
mov [PacketCommand], byte 0x28 ;0xBE
; Set the sector address
mov ax, word [CDSectorAddress+2]
xchg al, ah
mov word [PacketCommand+2], ax
mov ax, word [CDSectorAddress]
xchg al, ah
mov word [PacketCommand+4], ax
; Set the number of sectors to read
mov [PacketCommand+8], byte 1
; Send a command
call SendPacketDatCommand
pop ecx
test eax, eax
jz @@End_4
or ecx, ecx ;{SPraid.simba} (for cd load)
jz @@End_4
dec ecx
cmp [timer_ticks_enable], 0
jne @f
mov eax, NoTickWaitTime
;--------------------------------------
align 4
.wait:
dec eax
jz @@NextRetr
jmp .wait
;--------------------------------------
align 4
@@:
loop @@NextRetr
;--------------------------------------
@@End_4:
mov dword [DevErrorCode], eax
popad
ret
;-----------------------------------------------------------------------------
; General purpose procedures to execute packet commands in PIO Mode
; Maximum allowable waiting time for the device to respond to a packet command (in ticks)
;-----------------------------------------------------------------------------
MaxCDWaitTime = 1000 ;200 ;10 seconds
uglobal
; Memory area for generating a packet command
PacketCommand:
rb 12 ;DB 12 DUP (?)
; address of reading data sector
CDSectorAddress: dd ?
; Start time of the next disk operation
TickCounter_1 dd 0
; Time to start waiting for device readiness
WURStartTime dd 0
; pointer to buffer to read data into
CDDataBuf_pointer dd 0
endg
;-----------------------------------------------------------------------------
;****************************************************
;* SEND TO ATAPI DEVICE PACKET COMMAND, *
;* THAT MEANS TRASMIT ONE DATA SECTOR OF SIZE *
;* 2048 BYTE FROM DEVICE TO HOST *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel. *
;* PacketCommand - 12-byte command packet; *
;* CDBlockSize - size of receiving data block. *
; return eax DevErrorCode
;****************************************************
SendPacketDatCommand:
xor eax, eax
; Set CHS mode
mov byte [ATAAddressMode], al
; Send ATA command to send packet command
mov byte [ATAFeatures], al
mov byte [ATASectorCount], al
mov byte [ATASectorNumber], al
; Load the size of the sending block
mov [ATAHead], al
mov [ATACylinder], CDBlockSize
mov [ATACommand], 0xA0
call SendCommandToHDD_1
test eax, eax
jnz @@End_8 ; finish, saving the error code
; Waiting for the drive to be ready to receive a packet command
mov dx, [ATABasePortAddr]
add dx, 7 ; port 1x7h
mov ecx, NoTickWaitTime
;--------------------------------------
align 4
@@WaitDevice0:
cmp [timer_ticks_enable], 0
jne @f
dec ecx
jz @@Err1_1
jmp .test
;--------------------------------------
align 4
@@:
call change_task
; Check command execution time
mov eax, [timer_ticks]
sub eax, [TickCounter_1]
cmp eax, BSYWaitTime
ja @@Err1_1 ; time out error
; Check readiness
;--------------------------------------
align 4
.test:
in al, dx
test al, 0x80 ; BSY signal state
jnz @@WaitDevice0
test al, 1 ; ERR signal state
jnz @@Err6
test al, 0x8 ; DRQ signal state
jz @@WaitDevice0
; Send a packet command
cli
mov dx, [ATABasePortAddr]
mov ax, [PacketCommand]
out dx, ax
mov ax, [PacketCommand+2]
out dx, ax
mov ax, [PacketCommand+4]
out dx, ax
mov ax, [PacketCommand+6]
out dx, ax
mov ax, [PacketCommand+8]
out dx, ax
mov ax, [PacketCommand+10]
out dx, ax
sti
; Waiting for data to be ready
mov dx, [ATABasePortAddr]
add dx, 7 ; port 1x7h
mov ecx, NoTickWaitTime
;--------------------------------------
align 4
@@WaitDevice1:
cmp [timer_ticks_enable], 0
jne @f
dec ecx
jz @@Err1_1
jmp .test_1
;--------------------------------------
align 4
@@:
call change_task
; Check command execution time
mov eax, [timer_ticks]
sub eax, [TickCounter_1]
cmp eax, MaxCDWaitTime
ja @@Err1_1 ; time out error
; Check readiness
;--------------------------------------
align 4
.test_1:
in al, dx
test al, 0x80 ; BSY signal state
jnz @@WaitDevice1
test al, 1 ; ERR signal state
jnz @@Err6_temp
test al, 0x8 ; DRQ signal state
jz @@WaitDevice1
; Receive data block from controller
mov edi, [CDDataBuf_pointer]
; Load controller's data register address
mov dx, [ATABasePortAddr]
; Load the block size in bytes into the counter
xor ecx, ecx
mov cx, CDBlockSize
; Calculate block size in 16-bit words
shr cx, 1 ; divide block size by 2
; Receive data block
cli
cld
rep insw
sti
;--------------------------------------
; Successful completion of data receive
@@End_8:
xor eax, eax
ret
;--------------------------------------
; Write error code
@@Err1_1:
xor eax, eax
inc eax
ret
;--------------------------------------
@@Err6_temp:
mov eax, 7
ret
;--------------------------------------
@@Err6:
mov eax, 6
ret
;-----------------------------------------------------------------------------
;***********************************************
;* SEND TO ATAPI DEVICE PACKET COMMAND, *
;* THAT DOESNT MEAN TRANSMIT DATA *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel. *
;* PacketCommand - 12-byte command packet. *
;***********************************************
SendPacketNoDatCommand:
pushad
xor eax, eax
; Set CHS mode
mov byte [ATAAddressMode], al
; Send ATA command to send packet command
mov byte [ATAFeatures], al
mov byte [ATASectorCount], al
mov byte [ATASectorNumber], al
mov word [ATACylinder], ax
mov byte [ATAHead], al
mov [ATACommand], 0xA0
call SendCommandToHDD_1
test eax, eax
jnz @@End_9 ; finish, saving the error code
; Waiting for the drive to be ready to receive a packet command
mov dx, [ATABasePortAddr]
add dx, 7 ; port 1x7h
;--------------------------------------
align 4
@@WaitDevice0_1:
call change_task
; Check waiting time
mov eax, [timer_ticks]
sub eax, [TickCounter_1]
cmp eax, BSYWaitTime
ja @@Err1_3 ; time out error
; Check readiness
in al, dx
test al, 0x80 ; BSY signal state
jnz @@WaitDevice0_1
test al, 1 ; ERR signal state
jnz @@Err6_1
test al, 0x8 ; DRQ signal state
jz @@WaitDevice0_1
; Send packet command
; cli
mov dx, [ATABasePortAddr]
mov ax, word [PacketCommand]
out dx, ax
mov ax, word [PacketCommand+2]
out dx, ax
mov ax, word [PacketCommand+4]
out dx, ax
mov ax, word [PacketCommand+6]
out dx, ax
mov ax, word [PacketCommand+8]
out dx, ax
mov ax, word [PacketCommand+10]
out dx, ax
; sti
cmp [ignore_CD_eject_wait], 1
je @@clear_DEC
; Waiting for confirmation of command receive
mov dx, [ATABasePortAddr]
add dx, 7 ; port 1x7h
;--------------------------------------
align 4
@@WaitDevice1_1:
call change_task
; Check command execution time
mov eax, [timer_ticks]
sub eax, [TickCounter_1]
cmp eax, MaxCDWaitTime
ja @@Err1_3 ; time out error
; Wait for device release
in al, dx
test al, 0x80 ; BSY signal state
jnz @@WaitDevice1_1
test al, 1 ; ERR signal state
jnz @@Err6_1
test al, 0x40 ; DRDY signal state
jz @@WaitDevice1_1
;--------------------------------------
@@clear_DEC:
and [DevErrorCode], 0
popad
ret
;--------------------------------------
; Write error code
@@Err1_3:
xor eax, eax
inc eax
jmp @@End_9
;--------------------------------------
@@Err6_1:
mov eax, 6
;--------------------------------------
@@End_9:
mov [DevErrorCode], eax
popad
ret
;-----------------------------------------------------------------------------
;****************************************************
;* SEND COMMAND TO GIVEN DISK *
;* Input parameters are passed through the global *
;* variables: *
;* ChannelNumber - channel number (1 or 2); *
;* DiskNumber - disk number (0 or 1); *
;* ATAFeatures - "features"; *
;* ATASectorCount - sector count; *
;* ATASectorNumber - initial sector number; *
;* ATACylinder - initial cylinder number; *
;* ATAHead - initial head number; *
;* ATAAddressMode - addressing mode (0-CHS, 1-LBA); *
;* ATACommand - command code. *
;* If the function finished successfully: *
;* in ATABasePortAddr - base address of HDD; *
;* in DevErrorCode - zero. *
;* If error has occured then in DevErrorCode will *
;* be the error code. *
;****************************************************
SendCommandToHDD_1:
; Check the addressing mode code
cmp [ATAAddressMode], 1
ja @@Err2_4
; Check the channel number correctness
movzx ebx, [ChannelNumber]
dec ebx
cmp ebx, 1
ja @@Err3_4
; Set the base address
shl ebx, 2
mov eax, [cdpos]
dec eax
shr eax, 2
imul eax, sizeof.IDE_DATA
add eax, IDE_controller_1
add eax, ebx
mov ax, [eax+IDE_DATA.BAR0_val]
mov [ATABasePortAddr], ax
; Waiting for HDD ready to receive a command
; Choose desired disk
mov dx, [ATABasePortAddr]
add dx, 6 ; address of the heads register
mov al, [DiskNumber]
cmp al, 1 ; check the disk number
ja @@Err4_4
shl al, 4
or al, 10100000b
out dx, al
; Waiting for disk ready
inc dx
mov eax, [timer_ticks]
mov [TickCounter_1], eax
mov ecx, NoTickWaitTime
;--------------------------------------
align 4
@@WaitHDReady_2:
cmp [timer_ticks_enable], 0
jne @f
dec ecx
jz @@Err1_4
jmp .test
;--------------------------------------
align 4
@@:
call change_task
; Check waiting time
mov eax, [timer_ticks]
sub eax, [TickCounter_1]
cmp eax, BSYWaitTime ;300 ; wait for 3 seconds
ja @@Err1_4 ; time out error
;--------------------------------------
align 4
.test:
in al, dx ; Read the state register
; Check the state of BSY signal
test al, 0x80
jnz @@WaitHDReady_2
; Check the state of DRQ signal
test al, 0x8
jnz @@WaitHDReady_2
; load command to controller's registers
cli
mov dx, [ATABasePortAddr]
inc dx ; "features" register
mov al, [ATAFeatures]
out dx, al
inc dx ; sector counter
mov al, [ATASectorCount]
out dx, al
inc dx ; sector number register
mov al, [ATASectorNumber]
out dx, al
inc dx ; cylinder number (low byte)
mov ax, [ATACylinder]
out dx, al
inc dx ; cylinder number (high byte)
mov al, ah
out dx, al
inc dx ; head number / disk number
mov al, [DiskNumber]
shl al, 4
cmp [ATAHead], 0xF ; check head number
ja @@Err5_4
or al, [ATAHead]
or al, 10100000b
mov ah, [ATAAddressMode]
shl ah, 6
or al, ah
out dx, al
; Send command
mov al, [ATACommand]
inc dx ; command register
out dx, al
sti
;--------------------------------------
@@End_10:
xor eax, eax
ret
;--------------------------------------
; Write error code
@@Err1_4:
xor eax, eax
inc eax
ret
;--------------------------------------
@@Err2_4:
mov eax, 2
ret
;--------------------------------------
@@Err3_4:
mov eax, 3
ret
;--------------------------------------
@@Err4_4:
mov eax, 4
ret
;--------------------------------------
@@Err5_4:
mov eax, 5
ret
;-----------------------------------------------------------------------------
;*************************************************
;* WAIT FOR THE DEVICE IS READY FOR WORK *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel. *
;*************************************************
WaitUnitReady:
pusha
; Remember the peration start time
mov eax, [timer_ticks]
mov [WURStartTime], eax
; Clear the packet command buffer
call clear_packet_buffer
; Generate TEST UNIT READY command
mov [PacketCommand], word 0
; waiting loop for device readiness
mov ecx, NoTickWaitTime
;--------------------------------------
align 4
@@SendCommand:
; Send readiness check command
call SendPacketNoDatCommand
cmp [timer_ticks_enable], 0
jne @f
cmp [DevErrorCode], 0
je @@End_11
dec ecx
jz .Error
jmp @@SendCommand
;--------------------------------------
align 4
@@:
call change_task
; Check the error code
cmp [DevErrorCode], 0
je @@End_11
; Check waiting time
mov eax, [timer_ticks]
sub eax, [WURStartTime]
cmp eax, MaxCDWaitTime
jb @@SendCommand
;--------------------------------------
.Error:
; time out error
mov [DevErrorCode], 1
;--------------------------------------
@@End_11:
popa
ret
;-----------------------------------------------------------------------------
;*************************************************
;* FORBID DISK CHANGE *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel. *
;*************************************************
prevent_medium_removal:
pusha
; Clear the packet command buffer
call clear_packet_buffer
; Set command code
mov [PacketCommand], byte 0x1E
; Set "Forbid" code
mov [PacketCommand+4], byte 11b
; Send command
call SendPacketNoDatCommand
mov eax, ATAPI_IDE0_lock
add eax, [cdpos]
dec eax
mov [eax], byte 1
popa
ret
;-----------------------------------------------------------------------------
;*************************************************
;* ALLOW DISK CHANGE *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel. *
;*************************************************
allow_medium_removal:
pusha
; Clear the packet command buffer
call clear_packet_buffer
; Set command code
mov [PacketCommand], byte 0x1E
; unset "Forbid" code
mov [PacketCommand+4], byte 0
; Send command
call SendPacketNoDatCommand
mov eax, ATAPI_IDE0_lock
add eax, [cdpos]
dec eax
mov [eax], byte 0
popa
ret
;-----------------------------------------------------------------------------
;*************************************************
;* LOAD DISK TO THE DRIVE *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel. *
;*************************************************
LoadMedium:
pusha
; Clear the packet command buffer
call clear_packet_buffer
; Generate START/STOP UNIT command
; Set command code
mov [PacketCommand], word 0x1B
; Set disk loading operation
mov [PacketCommand+4], word 00000011b
; Send command
call SendPacketNoDatCommand
popa
ret
;-----------------------------------------------------------------------------
;*************************************************
;* REMOVE THE DISK FROM THE DRIVE *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel. *
;*************************************************
EjectMedium:
pusha
; Clear the packet command buffer
call clear_packet_buffer
; Generate START/STOP UNIT command
; Set command code
mov [PacketCommand], word 0x1B
; Set the operation to eject disk
mov [PacketCommand+4], word 00000010b
; Send command
call SendPacketNoDatCommand
popa
ret
;-----------------------------------------------------------------------------
;*************************************************
;* Check the event of pressing the eject button *
;* *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel. *
;*************************************************
proc check_ATAPI_device_event_has_work?
mov eax, [timer_ticks]
sub eax, [timer_ATAPI_check]
cmp eax, 100
jb .no
xor eax, eax
inc eax
ret
;--------------------------------------
.no:
xor eax, eax
ret
endp
;-----------------------------------------------------------------------------
align 4
check_ATAPI_device_event:
pusha
mov eax, [timer_ticks]
sub eax, [timer_ATAPI_check]
cmp eax, 100
jb .end_1
pushfd
mov al, [DRIVE_DATA+1]
and al, 11b
cmp al, 10b
jz .ide3
;--------------------------------------
.ide2_1:
mov al, [DRIVE_DATA+1]
and al, 1100b
cmp al, 1000b
jz .ide2
;--------------------------------------
.ide1_1:
mov al, [DRIVE_DATA+1]
and al, 110000b
cmp al, 100000b
jz .ide1
;--------------------------------------
.ide0_1:
mov al, [DRIVE_DATA+1]
and al, 11000000b
cmp al, 10000000b
jz .ide0
;--------------------------------------
.ide7_1:
mov al, [DRIVE_DATA+6]
and al, 11b
cmp al, 10b
jz .ide7
;--------------------------------------
.ide6_1:
mov al, [DRIVE_DATA+6]
and al, 1100b
cmp al, 1000b
jz .ide6
;--------------------------------------
.ide5_1:
mov al, [DRIVE_DATA+6]
and al, 110000b
cmp al, 100000b
jz .ide5
;--------------------------------------
.ide4_1:
mov al, [DRIVE_DATA+6]
and al, 11000000b
cmp al, 10000000b
jz .ide4
;--------------------------------------
.ide11_1:
mov al, [DRIVE_DATA+11]
and al, 11b
cmp al, 10b
jz .ide11
;--------------------------------------
.ide10_1:
mov al, [DRIVE_DATA+11]
and al, 1100b
cmp al, 1000b
jz .ide10
;--------------------------------------
.ide9_1:
mov al, [DRIVE_DATA+11]
and al, 110000b
cmp al, 100000b
jz .ide9
;--------------------------------------
.ide8_1:
mov al, [DRIVE_DATA+11]
and al, 11000000b
cmp al, 10000000b
jz .ide8
;--------------------------------------
.end:
popfd
mov eax, [timer_ticks]
mov [timer_ATAPI_check], eax
;--------------------------------------
.end_1:
popa
ret
;-----------------------------------------------------------------------------
.ide3:
cli
cmp [ATAPI_IDE3_lock], 1
jne .ide2_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel2_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 2
mov [DiskNumber], 1
mov [cdpos], 4
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide2_1
;-----------------------------------------------------------------------------
.ide2:
cli
cmp [ATAPI_IDE2_lock], 1
jne .ide1_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel2_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 2
mov [DiskNumber], 0
mov [cdpos], 3
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide1_1
;-----------------------------------------------------------------------------
.ide1:
cli
cmp [ATAPI_IDE1_lock], 1
jne .ide0_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel1_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 1
mov [DiskNumber], 1
mov [cdpos], 2
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide0_1
;-----------------------------------------------------------------------------
.ide0:
cli
cmp [ATAPI_IDE0_lock], 1
jne .ide7_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel1_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 1
mov [DiskNumber], 0
mov [cdpos], 1
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide7_1
;-----------------------------------------------------------------------------
.ide7:
cli
cmp [ATAPI_IDE7_lock], 1
jne .ide6_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel4_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 2
mov [DiskNumber], 1
mov [cdpos], 8
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide6_1
;-----------------------------------------------------------------------------
.ide6:
cli
cmp [ATAPI_IDE6_lock], 1
jne .ide5_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel4_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 2
mov [DiskNumber], 0
mov [cdpos], 7
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide5_1
;-----------------------------------------------------------------------------
.ide5:
cli
cmp [ATAPI_IDE5_lock], 1
jne .ide4_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel3_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 1
mov [DiskNumber], 1
mov [cdpos], 6
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide4_1
;-----------------------------------------------------------------------------
.ide4:
cli
cmp [ATAPI_IDE4_lock], 1
jne .ide11_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel3_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 1
mov [DiskNumber], 0
mov [cdpos], 5
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide11_1
;-----------------------------------------------------------------------------
.ide11:
cli
cmp [ATAPI_IDE11_lock], 1
jne .ide10_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel6_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 2
mov [DiskNumber], 1
mov [cdpos], 12
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide10_1
;-----------------------------------------------------------------------------
.ide10:
cli
cmp [ATAPI_IDE10_lock], 1
jne .ide9_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel6_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 2
mov [DiskNumber], 0
mov [cdpos], 11
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide9_1
;-----------------------------------------------------------------------------
.ide9:
cli
cmp [ATAPI_IDE9_lock], 1
jne .ide8_1
cmp [cd_status], 0
jne .end
mov ecx, ide_channel5_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 1
mov [DiskNumber], 1
mov [cdpos], 10
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .ide8_1
;-----------------------------------------------------------------------------
.ide8:
cli
cmp [ATAPI_IDE8_lock], 1
jne .end
cmp [cd_status], 0
jne .end
mov ecx, ide_channel5_mutex
call mutex_lock
call reserve_ok2
mov [ChannelNumber], 1
mov [DiskNumber], 0
mov [cdpos], 9
call GetEvent_StatusNotification
cmp [CDDataBuf+4], byte 1
jne @f
call .eject
;--------------------------------------
@@:
call syscall_cdaudio.free
jmp .end
;-----------------------------------------------------------------------------
.eject:
call clear_CD_cache
call allow_medium_removal
mov [ignore_CD_eject_wait], 1
call EjectMedium
mov [ignore_CD_eject_wait], 0
ret
;-----------------------------------------------------------------------------
iglobal
timer_ATAPI_check dd 0
ATAPI_IDE0_lock db 0
ATAPI_IDE1_lock db 0
ATAPI_IDE2_lock db 0
ATAPI_IDE3_lock db 0
ATAPI_IDE4_lock db 0
ATAPI_IDE5_lock db 0
ATAPI_IDE6_lock db 0
ATAPI_IDE7_lock db 0
ATAPI_IDE8_lock db 0
ATAPI_IDE9_lock db 0
ATAPI_IDE10_lock db 0
ATAPI_IDE11_lock db 0
ignore_CD_eject_wait db 0
endg
;-----------------------------------------------------------------------------
;*************************************************
;* Get an event or device status message *
;* *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel *
;*************************************************
GetEvent_StatusNotification:
pusha
mov [CDDataBuf_pointer], CDDataBuf
; Clear the packet command buffer
call clear_packet_buffer
; Set command code
mov [PacketCommand], byte 4Ah
mov [PacketCommand+1], byte 00000001b
; Set message class request
mov [PacketCommand+4], byte 00010000b
; Size of allocated area
mov [PacketCommand+7], byte 8h
mov [PacketCommand+8], byte 0h
; Send command
call SendPacketDatCommand
popa
ret
;-----------------------------------------------------------------------------
;*************************************************
; Read information from TOC (Table of contents) *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel *
;*************************************************
Read_TOC:
pusha
mov [CDDataBuf_pointer], CDDataBuf
; Clear the packet command buffer
call clear_packet_buffer
; Generate a packet command to read a data sector
mov [PacketCommand], byte 0x43
; Set format
mov [PacketCommand+2], byte 1
; Size of allocated area
mov [PacketCommand+7], byte 0xFF
mov [PacketCommand+8], byte 0h
; Send a command
call SendPacketDatCommand
popa
ret
;-----------------------------------------------------------------------------
;*****************************************************
;* DETERMINE THE TOTAL NUMBER OF SECTORS ON THE DISK *
;* Input parameters are passed through global *
;* variables: *
;* ChannelNumber - channel number; *
;* DiskNumber - disk number on channel *
;*****************************************************
;ReadCapacity:
; pusha
;; Clear the packet command buffer
; call clear_packet_buffer
;; Set the buffer size in bytes
; mov [CDBlockSize],8
;; Generate READ CAPACITY command
; mov [PacketCommand],word 25h
;; Send command
; call SendPacketDatCommand
; popa
; ret
;-----------------------------------------------------------------------------
clear_packet_buffer:
; Clear the packet command buffer
and [PacketCommand], dword 0
and [PacketCommand+4], dword 0
and [PacketCommand+8], dword 0
ret
;-----------------------------------------------------------------------------
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