mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-05 14:51:54 +03:00
fa83bf6c24
git-svn-id: svn://kolibrios.org@210 a494cfbc-eb01-0410-851d-a64ba20cac60
859 lines
19 KiB
PHP
Executable File
859 lines
19 KiB
PHP
Executable File
; Low-level driver for HDD access
|
|
; DMA support by Mario79
|
|
|
|
;**************************************************************************
|
|
;
|
|
; 0x600008 - first entry in cache list
|
|
;
|
|
; +0 - lba sector
|
|
; +4 - state of cache sector
|
|
; 0 = empty
|
|
; 1 = used for read ( same as in hd )
|
|
; 2 = used for write ( differs from hd )
|
|
;
|
|
; +65536 - cache entries
|
|
;
|
|
;**************************************************************************
|
|
|
|
align 4
|
|
hd_read:
|
|
;-----------------------------------------------------------
|
|
; input : eax = block to read
|
|
; ebx = destination
|
|
;-----------------------------------------------------------
|
|
push ecx esi edi ; scan cache
|
|
|
|
mov ecx,cache_max ; entries in cache
|
|
mov esi,0x600000+8
|
|
mov edi,1
|
|
|
|
hdreadcache:
|
|
|
|
cmp dword [esi+4],0 ; empty
|
|
je nohdcache
|
|
|
|
cmp [esi],eax ; correct sector
|
|
je yeshdcache
|
|
|
|
nohdcache:
|
|
|
|
add esi,8
|
|
inc edi
|
|
dec ecx
|
|
jnz hdreadcache
|
|
|
|
call find_empty_slot ; ret in edi
|
|
cmp [hd_error],0
|
|
jne return_01
|
|
cmp [dma_hdd], 1
|
|
jnz .nodma
|
|
call hd_read_dma
|
|
jmp @f
|
|
.nodma:
|
|
call hd_read_pio
|
|
@@:
|
|
|
|
lea esi,[edi*8+0x600000]
|
|
mov [esi],eax ; sector number
|
|
mov dword [esi+4],1 ; hd read - mark as same as in hd
|
|
|
|
yeshdcache:
|
|
|
|
mov esi,edi
|
|
shl esi,9
|
|
add esi,0x600000+65536
|
|
mov edi,ebx
|
|
mov ecx,512/4
|
|
cld
|
|
rep movsd ; move data
|
|
return_01:
|
|
pop edi esi ecx
|
|
ret
|
|
|
|
align 4
|
|
hd_read_pio:
|
|
push eax edx
|
|
|
|
call disable_ide_int
|
|
|
|
call wait_for_hd_idle
|
|
cmp [hd_error],0
|
|
jne hd_read_error
|
|
|
|
; cli
|
|
xor eax,eax
|
|
mov edx,[hdbase]
|
|
inc edx
|
|
out dx,al ; ATAFeatures ॣ¨áâà "®á®¡¥®á⥩"
|
|
inc edx
|
|
inc eax
|
|
out dx,al ; ATASectorCount áçñâ稪 ᥪâ®à®¢
|
|
inc edx
|
|
mov eax,[esp+4]
|
|
out dx,al ; ATASectorNumber ॣ¨áâà ®¬¥à ᥪâ®à
|
|
shr eax,8
|
|
inc edx
|
|
out dx,al ; ATACylinder ®¬¥à 樫¨¤à (¬« ¤è¨© ¡ ©â)
|
|
shr eax,8
|
|
inc edx
|
|
out dx,al ; ®¬¥à 樫¨¤à (áâ à訩 ¡ ©â)
|
|
shr eax,8
|
|
inc edx
|
|
and al,1+2+4+8
|
|
add al,byte [hdid]
|
|
add al,128+64+32
|
|
out dx,al ; ®¬¥à £®«®¢ª¨/®¬¥à ¤¨áª
|
|
inc edx
|
|
mov al,20h
|
|
out dx,al ; ATACommand ॣ¨áâà ª®¬ ¤
|
|
; sti
|
|
|
|
call wait_for_sector_buffer
|
|
|
|
cmp [hd_error],0
|
|
jne hd_read_error
|
|
|
|
; cli
|
|
push edi
|
|
shl edi,9
|
|
add edi,0x600000+65536
|
|
mov ecx,256
|
|
mov edx,[hdbase]
|
|
cld
|
|
rep insw
|
|
pop edi
|
|
; sti
|
|
|
|
call enable_ide_int
|
|
|
|
pop edx eax
|
|
ret
|
|
|
|
disable_ide_int:
|
|
; mov edx,[hdbase]
|
|
; add edx,0x206
|
|
; mov al,2
|
|
; out dx,al
|
|
cli
|
|
ret
|
|
|
|
enable_ide_int:
|
|
; mov edx,[hdbase]
|
|
; add edx,0x206
|
|
; mov al,0
|
|
; out dx,al
|
|
sti
|
|
ret
|
|
|
|
align 4
|
|
hd_write:
|
|
;-----------------------------------------------------------
|
|
; input : eax = block
|
|
; ebx = pointer to memory
|
|
;-----------------------------------------------------------
|
|
push ecx esi edi
|
|
|
|
; check if the cache already has the sector and overwrite it
|
|
|
|
mov ecx,cache_max
|
|
mov esi,0x600000+8
|
|
mov edi,1
|
|
|
|
hdwritecache:
|
|
|
|
cmp dword [esi+4],0 ; if cache slot is empty
|
|
je not_in_cache_write
|
|
|
|
cmp [esi],eax ; if the slot has the sector
|
|
je yes_in_cache_write
|
|
|
|
not_in_cache_write:
|
|
|
|
add esi,8
|
|
inc edi
|
|
dec ecx
|
|
jnz hdwritecache
|
|
|
|
; sector not found in cache
|
|
; write the block to a new location
|
|
|
|
call find_empty_slot ; ret in edi
|
|
cmp [hd_error],0
|
|
jne hd_write_access_denied
|
|
|
|
lea esi,[edi*8+0x600000]
|
|
mov [esi],eax ; sector number
|
|
|
|
yes_in_cache_write:
|
|
|
|
mov dword [esi+4],2 ; write - differs from hd
|
|
|
|
shl edi,9
|
|
add edi,0x600000+65536
|
|
mov esi,ebx
|
|
mov ecx,512/4
|
|
cld
|
|
rep movsd ; move data
|
|
hd_write_access_denied:
|
|
pop edi esi ecx
|
|
ret
|
|
|
|
|
|
write_cache:
|
|
;-----------------------------------------------------------
|
|
; write all changed sectors to disk
|
|
;-----------------------------------------------------------
|
|
push eax ecx edx esi edi
|
|
|
|
; write difference ( 2 ) from cache to hd
|
|
|
|
mov ecx,cache_max
|
|
mov esi,0x600000+8
|
|
mov edi,1
|
|
|
|
write_cache_more:
|
|
|
|
cmp dword [esi+4],2 ; if cache slot is not different
|
|
jne .write_chain
|
|
|
|
mov dword [esi+4],1 ; same as in hd
|
|
mov eax,[esi] ; eax = sector to write
|
|
|
|
cmp eax,[PARTITION_START]
|
|
jb danger
|
|
cmp eax,[PARTITION_END]
|
|
ja danger
|
|
|
|
cmp [dma_hdd], 1
|
|
jmp .nodma
|
|
; Ž¡ê¥¤¨ï¥¬ § ¯¨áì 楯®çª¨ ¯®á«¥¤®¢ ⥫ìëå ᥪâ®à®¢ ¢ ®¤® ®¡à 饨¥ ª ¤¨áªã
|
|
cmp ecx, 1
|
|
jz .nonext
|
|
cmp dword [esi+8+4], 2
|
|
jnz .nonext
|
|
push eax
|
|
inc eax
|
|
cmp eax, [esi+8]
|
|
pop eax
|
|
jnz .nonext
|
|
cmp [cache_chain_started], 1
|
|
jz @f
|
|
mov [cache_chain_started], 1
|
|
mov [cache_chain_size], 0
|
|
mov [cache_chain_pos], edi
|
|
mov [cache_chain_ptr], esi
|
|
@@:
|
|
inc [cache_chain_size]
|
|
cmp [cache_chain_size], 64
|
|
jnz .continue
|
|
jmp .write_chain
|
|
.nonext:
|
|
call flush_cache_chain
|
|
mov [cache_chain_size], 1
|
|
mov [cache_chain_ptr], esi
|
|
call write_cache_sector
|
|
jmp .continue
|
|
.nodma:
|
|
call cache_write_pio
|
|
.write_chain:
|
|
call flush_cache_chain
|
|
|
|
.continue:
|
|
danger:
|
|
|
|
add esi,8
|
|
inc edi
|
|
dec ecx
|
|
jnz write_cache_more
|
|
call flush_cache_chain
|
|
return_02:
|
|
pop edi esi edx ecx eax
|
|
ret
|
|
|
|
flush_cache_chain:
|
|
cmp [cache_chain_started], 0
|
|
jz @f
|
|
call write_cache_chain
|
|
mov [cache_chain_started], 0
|
|
@@:
|
|
ret
|
|
|
|
align 4
|
|
cache_write_pio:
|
|
call disable_ide_int
|
|
|
|
call wait_for_hd_idle
|
|
cmp [hd_error],0
|
|
jne hd_write_error
|
|
|
|
; cli
|
|
xor eax,eax
|
|
mov edx,[hdbase]
|
|
inc edx
|
|
out dx,al
|
|
inc edx
|
|
inc eax
|
|
out dx,al
|
|
inc edx
|
|
mov eax,[esi] ; eax = sector to write
|
|
out dx,al
|
|
shr eax,8
|
|
inc edx
|
|
out dx,al
|
|
shr eax,8
|
|
inc edx
|
|
out dx,al
|
|
shr eax,8
|
|
inc edx
|
|
and al,1+2+4+8
|
|
add al,byte [hdid]
|
|
add al,128+64+32
|
|
out dx,al
|
|
inc edx
|
|
mov al,30h
|
|
out dx,al
|
|
; sti
|
|
|
|
call wait_for_sector_buffer
|
|
|
|
cmp [hd_error],0
|
|
jne hd_write_error
|
|
|
|
push ecx esi
|
|
|
|
; cli
|
|
mov esi,edi
|
|
shl esi,9
|
|
add esi,0x600000+65536 ; esi = from memory position
|
|
mov ecx,256
|
|
mov edx,[hdbase]
|
|
cld
|
|
rep outsw
|
|
; sti
|
|
|
|
call enable_ide_int
|
|
pop esi ecx
|
|
|
|
ret
|
|
|
|
align 4
|
|
find_empty_slot:
|
|
;-----------------------------------------------------------
|
|
; find empty or read slot, flush cache if next 10% is used by write
|
|
; output : edi = cache slot
|
|
;-----------------------------------------------------------
|
|
; push ecx esi
|
|
|
|
search_again:
|
|
|
|
mov ecx,cache_max*10/100
|
|
mov edi,[cache_search_start]
|
|
|
|
search_for_empty:
|
|
|
|
inc edi
|
|
cmp edi,cache_max
|
|
jbe inside_cache
|
|
mov edi,1
|
|
|
|
inside_cache:
|
|
|
|
cmp dword [edi*8+0x600000+4],2 ; get cache slot info
|
|
jb found_slot ; it's empty or read
|
|
dec ecx
|
|
jnz search_for_empty
|
|
|
|
call write_cache ; no empty slots found, write all
|
|
cmp [hd_error],0
|
|
jne found_slot_access_denied
|
|
|
|
jmp search_again ; and start again
|
|
|
|
found_slot:
|
|
|
|
mov [cache_search_start],edi
|
|
found_slot_access_denied:
|
|
ret
|
|
|
|
align 4
|
|
clear_hd_cache:
|
|
|
|
push eax ecx edi
|
|
mov edi,0x600000
|
|
mov ecx,16384
|
|
xor eax,eax
|
|
cld
|
|
rep stosd ; clear hd cache with 0
|
|
mov [cache_search_start],eax
|
|
mov [fat_in_cache],-1
|
|
mov [fat_change],0
|
|
pop edi ecx eax
|
|
ret
|
|
|
|
save_hd_wait_timeout:
|
|
|
|
push eax
|
|
mov eax,[timer_ticks];[0xfdf0]
|
|
add eax,300 ; 3 sec timeout
|
|
mov [hd_wait_timeout],eax
|
|
pop eax
|
|
ret
|
|
|
|
align 4
|
|
check_hd_wait_timeout:
|
|
|
|
push eax
|
|
mov eax,[hd_wait_timeout]
|
|
cmp [timer_ticks], eax ;[0xfdf0],eax
|
|
jg hd_timeout_error
|
|
pop eax
|
|
mov [hd_error],0
|
|
ret
|
|
|
|
iglobal
|
|
hd_timeout_str db 'K : FS - HD timeout',13,10,0
|
|
hd_read_str db 'K : FS - HD read error',13,10,0
|
|
hd_write_str db 'K : FS - HD write error',13,10,0
|
|
hd_lba_str db 'K : FS - HD LBA error',13,10,0
|
|
endg
|
|
|
|
hd_timeout_error:
|
|
|
|
call clear_hd_cache
|
|
call clear_application_table_status
|
|
mov esi,hd_timeout_str
|
|
call sys_msg_board_str
|
|
; jmp $
|
|
mov [hd_error],1
|
|
pop eax
|
|
ret
|
|
|
|
hd_read_error:
|
|
|
|
call clear_hd_cache
|
|
call clear_application_table_status
|
|
mov esi,hd_read_str
|
|
call sys_msg_board_str
|
|
pop edx eax
|
|
ret
|
|
|
|
hd_write_error:
|
|
|
|
call clear_hd_cache
|
|
call clear_application_table_status
|
|
mov esi,hd_write_str
|
|
call sys_msg_board_str
|
|
ret
|
|
|
|
hd_write_error_dma:
|
|
call clear_hd_cache
|
|
call clear_application_table_status
|
|
mov esi, hd_write_str
|
|
call sys_msg_board_str
|
|
pop esi
|
|
ret
|
|
|
|
hd_lba_error:
|
|
call clear_hd_cache
|
|
call clear_application_table_status
|
|
mov esi,hd_lba_str
|
|
call sys_msg_board_str
|
|
jmp LBA_read_ret
|
|
|
|
|
|
align 4
|
|
wait_for_hd_idle:
|
|
|
|
push eax edx
|
|
|
|
call save_hd_wait_timeout
|
|
|
|
mov edx,[hdbase]
|
|
add edx,0x7
|
|
|
|
wfhil1:
|
|
|
|
call check_hd_wait_timeout
|
|
cmp [hd_error],0
|
|
jne @f
|
|
|
|
in al,dx
|
|
test al,128
|
|
jnz wfhil1
|
|
|
|
@@:
|
|
|
|
pop edx eax
|
|
ret
|
|
|
|
|
|
align 4
|
|
wait_for_sector_buffer:
|
|
|
|
push eax edx
|
|
|
|
mov edx,[hdbase]
|
|
add edx,0x7
|
|
|
|
call save_hd_wait_timeout
|
|
|
|
hdwait_sbuf: ; wait for sector buffer to be ready
|
|
|
|
call check_hd_wait_timeout
|
|
cmp [hd_error],0
|
|
jne @f
|
|
|
|
in al,dx
|
|
test al,8
|
|
jz hdwait_sbuf
|
|
|
|
mov [hd_error],0
|
|
|
|
cmp [hd_setup],1 ; do not mark error for setup request
|
|
je buf_wait_ok
|
|
|
|
test al,1 ; previous command ended up with an error
|
|
jz buf_wait_ok
|
|
@@:
|
|
mov [hd_error],1
|
|
|
|
buf_wait_ok:
|
|
|
|
pop edx eax
|
|
ret
|
|
|
|
; \begin{Mario79}
|
|
align 4
|
|
wait_for_sector_dma_ide0:
|
|
push eax
|
|
push edx
|
|
call save_hd_wait_timeout
|
|
.wait:
|
|
call change_task
|
|
cmp [irq14_func], hdd_irq14
|
|
jnz .done
|
|
call check_hd_wait_timeout
|
|
cmp [hd_error], 0
|
|
jz .wait
|
|
mov [irq14_func], hdd_irq_null
|
|
mov dx, [IDEContrRegsBaseAddr]
|
|
mov al, 0
|
|
out dx, al
|
|
.done:
|
|
pop edx
|
|
pop eax
|
|
ret
|
|
|
|
align 4
|
|
wait_for_sector_dma_ide1:
|
|
push eax
|
|
push edx
|
|
call save_hd_wait_timeout
|
|
.wait:
|
|
call change_task
|
|
cmp [irq15_func], hdd_irq15
|
|
jnz .done
|
|
call check_hd_wait_timeout
|
|
cmp [hd_error], 0
|
|
jz .wait
|
|
mov [irq15_func], hdd_irq_null
|
|
mov dx, [IDEContrRegsBaseAddr]
|
|
add dx, 8
|
|
mov al, 0
|
|
out dx, al
|
|
.done:
|
|
pop edx
|
|
pop eax
|
|
ret
|
|
|
|
iglobal
|
|
align 4
|
|
; note that IDE descriptor table must be 4-byte aligned and do not cross 4K boundary
|
|
IDE_descriptor_table:
|
|
dd 284000h
|
|
dw 2000h
|
|
dw 8000h
|
|
|
|
dma_cur_sector dd not 40h
|
|
irq14_func dd hdd_irq_null
|
|
irq15_func dd hdd_irq_null
|
|
endg
|
|
|
|
uglobal
|
|
; all uglobals are zeroed at boot
|
|
dma_process dd 0
|
|
dma_slot_ptr dd 0
|
|
cache_chain_pos dd 0
|
|
cache_chain_ptr dd 0
|
|
cache_chain_size db 0
|
|
cache_chain_started db 0
|
|
dma_task_switched db 0
|
|
dma_hdd db 0
|
|
endg
|
|
|
|
align 4
|
|
hdd_irq14:
|
|
pushfd
|
|
cli
|
|
pushad
|
|
mov [irq14_func], hdd_irq_null
|
|
mov dx, [IDEContrRegsBaseAddr]
|
|
mov al, 0
|
|
out dx, al
|
|
call update_counters
|
|
mov ebx, [dma_process]
|
|
cmp [0x3000], ebx
|
|
jz .noswitch
|
|
mov [dma_task_switched], 1
|
|
mov edi, [dma_slot_ptr]
|
|
mov eax, [0x3000]
|
|
mov [dma_process], eax
|
|
mov eax, [0x3010]
|
|
mov [dma_slot_ptr], eax
|
|
mov [0x3000], ebx
|
|
mov [0x3010], edi
|
|
mov byte [0xFFFF], 1
|
|
call do_change_task
|
|
.noswitch:
|
|
popad
|
|
popfd
|
|
align 4
|
|
hdd_irq_null:
|
|
ret
|
|
|
|
align 4
|
|
hdd_irq15:
|
|
pushfd
|
|
cli
|
|
pushad
|
|
mov [irq15_func], hdd_irq_null
|
|
mov dx, [IDEContrRegsBaseAddr]
|
|
add dx, 8
|
|
mov al, 0
|
|
out dx, al
|
|
call update_counters
|
|
mov ebx, [dma_process]
|
|
cmp [0x3000], ebx
|
|
jz .noswitch
|
|
mov [dma_task_switched], 1
|
|
mov edi, [dma_slot_ptr]
|
|
mov eax, [0x3000]
|
|
mov [dma_process], eax
|
|
mov eax, [0x3010]
|
|
mov [dma_slot_ptr], eax
|
|
mov [0x3000], ebx
|
|
mov [0x3010], edi
|
|
mov byte [0xFFFF], 1
|
|
call do_change_task
|
|
.noswitch:
|
|
popad
|
|
popfd
|
|
ret
|
|
|
|
align 4
|
|
hd_read_dma:
|
|
push eax
|
|
push edx
|
|
mov edx, [dma_cur_sector]
|
|
cmp eax, edx
|
|
jb .notread
|
|
add edx, 15
|
|
cmp [esp+4], edx
|
|
ja .notread
|
|
mov eax, [esp+4]
|
|
sub eax, [dma_cur_sector]
|
|
shl eax, 9
|
|
add eax, 0x284000
|
|
push ecx esi edi
|
|
mov esi, eax
|
|
shl edi, 9
|
|
add edi, 0x610000
|
|
mov ecx, 512/4
|
|
cld
|
|
rep movsd
|
|
pop edi esi ecx
|
|
pop edx
|
|
pop eax
|
|
ret
|
|
.notread:
|
|
mov eax, IDE_descriptor_table
|
|
mov dword [eax], 0x284000
|
|
mov word [eax+4], 0x2000
|
|
mov dx, [IDEContrRegsBaseAddr]
|
|
cmp [hdbase], 0x1F0
|
|
jz @f
|
|
add edx, 8
|
|
@@:
|
|
push edx
|
|
add edx, 4
|
|
out dx, eax
|
|
pop edx
|
|
mov al, 0
|
|
out dx, al
|
|
add edx, 2
|
|
mov al, 6
|
|
out dx, al
|
|
call wait_for_hd_idle
|
|
cmp [hd_error], 0
|
|
jnz hd_read_error
|
|
call disable_ide_int
|
|
xor eax, eax
|
|
mov edx, [hdbase]
|
|
inc edx
|
|
out dx, al
|
|
inc edx
|
|
mov eax, 10h
|
|
out dx, al
|
|
inc edx
|
|
mov eax, [esp+4]
|
|
out dx, al
|
|
shr eax, 8
|
|
inc edx
|
|
out dx, al
|
|
shr eax, 8
|
|
inc edx
|
|
out dx, al
|
|
shr eax, 8
|
|
inc edx
|
|
and al, 0xF
|
|
add al, byte [hdid]
|
|
add al, 11100000b
|
|
out dx, al
|
|
inc edx
|
|
mov al, 0xC8
|
|
out dx, al
|
|
mov dx, [IDEContrRegsBaseAddr]
|
|
cmp [hdbase], 0x1F0
|
|
jz @f
|
|
add dx, 8
|
|
@@:
|
|
mov al, 9
|
|
out dx, al
|
|
mov eax, [0x3000]
|
|
mov [dma_process], eax
|
|
mov eax, [0x3010]
|
|
mov [dma_slot_ptr], eax
|
|
cmp [hdbase], 0x1F0
|
|
jnz .ide1
|
|
mov [irq14_func], hdd_irq14
|
|
jmp @f
|
|
.ide1:
|
|
mov [irq15_func], hdd_irq15
|
|
@@:
|
|
call enable_ide_int
|
|
cmp [hdbase], 0x1F0
|
|
jnz .wait_ide1
|
|
call wait_for_sector_dma_ide0
|
|
jmp @f
|
|
.wait_ide1:
|
|
call wait_for_sector_dma_ide1
|
|
@@:
|
|
cmp [hd_error], 0
|
|
jnz hd_read_error
|
|
pop edx
|
|
pop eax
|
|
mov [dma_cur_sector], eax
|
|
jmp hd_read_dma
|
|
|
|
align 4
|
|
write_cache_chain:
|
|
push esi
|
|
mov eax, IDE_descriptor_table
|
|
mov edx, [cache_chain_pos]
|
|
shl edx, 9
|
|
add edx, 0x610000
|
|
mov [eax], edx
|
|
movzx edx, [cache_chain_size]
|
|
shl edx, 9
|
|
mov [eax+4], dx
|
|
jmp do_write_dma
|
|
write_cache_sector:
|
|
push esi
|
|
mov eax, IDE_descriptor_table
|
|
mov edx, edi
|
|
shl edx, 9
|
|
add edx, 0x610000
|
|
mov [eax], edx
|
|
mov word [eax+4], 0x200
|
|
do_write_dma:
|
|
mov dx, [IDEContrRegsBaseAddr]
|
|
cmp [hdbase], 0x1F0
|
|
jz @f
|
|
add edx, 8
|
|
@@:
|
|
push edx
|
|
add edx, 4
|
|
out dx, eax
|
|
pop edx
|
|
mov al, 0
|
|
out dx, al
|
|
add edx, 2
|
|
mov al, 6
|
|
out dx, al
|
|
call wait_for_hd_idle
|
|
cmp [hd_error], 0
|
|
jnz hd_write_error_dma
|
|
call disable_ide_int
|
|
xor eax, eax
|
|
mov edx, [hdbase]
|
|
inc edx
|
|
out dx, al
|
|
inc edx
|
|
mov al, [cache_chain_size]
|
|
out dx, al
|
|
inc edx
|
|
mov esi, [cache_chain_ptr]
|
|
mov eax, [esi]
|
|
out dx, al
|
|
shr eax, 8
|
|
inc edx
|
|
out dx, al
|
|
shr eax, 8
|
|
inc edx
|
|
out dx, al
|
|
shr eax, 8
|
|
inc edx
|
|
and al, 0xF
|
|
add al, byte [hdid]
|
|
add al, 11100000b
|
|
out dx, al
|
|
inc edx
|
|
mov al, 0xCA
|
|
out dx, al
|
|
mov dx, [IDEContrRegsBaseAddr]
|
|
cmp [hdbase], 0x1F0
|
|
jz @f
|
|
add dx, 8
|
|
@@:
|
|
mov al, 1
|
|
out dx, al
|
|
mov eax, [0x3000]
|
|
mov [dma_process], eax
|
|
mov eax, [0x3010]
|
|
mov [dma_slot_ptr], eax
|
|
cmp [hdbase], 0x1F0
|
|
jnz .ide1
|
|
mov [irq14_func], hdd_irq14
|
|
jmp @f
|
|
.ide1:
|
|
mov [irq15_func], hdd_irq15
|
|
@@:
|
|
call enable_ide_int
|
|
mov [dma_cur_sector], not 0x40
|
|
cmp [hdbase], 0x1F0
|
|
jnz .wait_ide1
|
|
call wait_for_sector_dma_ide0
|
|
jmp @f
|
|
.wait_ide1:
|
|
call wait_for_sector_dma_ide1
|
|
@@:
|
|
cmp [hd_error], 0
|
|
jnz hd_write_error_dma
|
|
pop esi
|
|
ret
|
|
|
|
uglobal
|
|
IDEContrRegsBaseAddr dw ?
|
|
endg
|
|
; \end{Mario79}
|