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Regard whitespace Rev 2986 → Rev 2987

/kernel/branches/Kolibri-acpi/blkdev/disk.inc
350,8 → 350,10
inc eax
cmp byte [ebx+eax-1], 0
jnz @b
; 2b. Call the heap manager.
; 2b. Call the heap manager. Note that it can change ebx.
push ebx
call malloc
pop ebx
; 2c. Check the result. If allocation failed, go to 7.
pop esi ; restore allocated pointer to DISK
test eax, eax
418,7 → 420,7
push esi ; save used registers to be stdcall
; 1. Force media to be removed. If the media is already removed, the
; call does nothing.
mov esi, [esp+4+8] ; esi = handle of the disk
mov esi, [esp+4+4] ; esi = handle of the disk
stdcall disk_media_changed, esi, 0
; 2. Delete the structure from the global list.
; 2a. Acquire the mutex.
975,15 → 977,33
.start dq ?
.length dq ?
end virtual
; Currently no file systems are supported, so just allocate the PARTITION
; When disk_add_partition is called, ebx contains a pointer to
; a two-sectors-sized buffer. This function saves ebx in the stack
; immediately before ebp.
virtual at ebp-4
.buffer dd ?
end virtual
; 1. Read the bootsector to the buffer.
mov al, DISKFUNC.read
mov ebx, [.buffer]
add ebx, 512
push 1
stdcall disk_call_driver, ebx, dword [.start], dword [.start+4], esp
; 2. Run tests for all supported filesystems. If at least one test succeeded,
; go to 4.
; For tests: qword [ebp+8] = partition start, qword [ebp+10h] = partition
; length, [esp] = 0 if reading bootsector failed or 1 if succeeded,
; ebx points to the buffer for bootsector.
call fat_create_partition
test eax, eax
jnz .success
; 3. No file system has recognized the volume, so just allocate the PARTITION
; structure without extra fields.
; 1. Allocate and check result.
push sizeof.PARTITION
pop eax
call malloc
test eax, eax
jz .nothing
; 2. Fill the common fields: copy .start and .length.
mov edx, dword [.start]
mov dword [eax+PARTITION.FirstSector], edx
mov edx, dword [.start+4]
992,8 → 1012,12
mov dword [eax+PARTITION.Length], edx
mov edx, dword [.length+4]
mov dword [eax+PARTITION.Length+4], edx
mov [eax+PARTITION.Disk], esi
and [eax+PARTITION.FSUserFunctions], 0
.success:
.nothing:
; 3. Return with eax = pointer to PARTITION or NULL.
; 4. Return with eax = pointer to PARTITION or NULL.
pop ecx
ret
 
; This function is called from file_system_lfn.
1061,6 → 1085,7
; 6. Now we are sure that the DISK structure is not going to die at least
; while we are working with it, so release the global mutex.
call mutex_unlock
pop ecx ; pop from the stack saved value of esi
; 7. Acquire the mutex for media object.
pop edi ; restore edi
lea ecx, [ebx+DISK.MediaLock]
1175,15 → 1200,36
.main:
cmp ecx, [edx+DISK.NumPartitions]
jae .notfound
mov dword [esp+32], ERROR_UNKNOWN_FS
mov eax, [edx+DISK.Partitions]
mov eax, [eax+ecx*4]
mov edi, [eax+PARTITION.FSUserFunctions]
test edi, edi
jz .nofs
mov ecx, [ebx]
cmp [edi], ecx
jbe .unsupported
push edx
push ebp
mov ebp, eax
call dword [edi+4+ecx*4]
pop ebp
pop edx
mov dword [esp+32], eax
mov dword [esp+20], ebx
.cleanup:
mov esi, edx
call disk_media_dereference
call disk_dereference
ret
.nofs:
mov dword [esp+32], ERROR_UNKNOWN_FS
jmp .cleanup
.notfound:
mov dword [esp+32], ERROR_FILE_NOT_FOUND
jmp .cleanup
.unsupported:
mov dword [esp+32], ERROR_UNSUPPORTED_FS
jmp .cleanup
.nomedia:
test ecx, ecx
jnz .notfound
1192,7 → 1238,6
; if the driver does not support insert notifications and we are the only fs
; operation with this disk, issue the fake insert notification; if media is
; still not inserted, 'disk_media_changed' will detect this and do nothing
;;; push ebx
lea ecx, [edx+DISK.MediaLock]
call mutex_lock
cmp [edx+DISK.MediaRefCount], 1
/kernel/branches/Kolibri-acpi/blkdev/disk_cache.inc
18,9 → 18,11
; this request should be processed by hd_read.
cmp [ebp+PARTITION.Disk], 'old'
jnz @f
add eax, dword [ebp+PARTITION.FirstSector]
mov [hdd_appl_data], 0
call hd_read
mov [hdd_appl_data], 1 ; restore to default state
mov eax, [hd_error]
ret
@@:
; In the normal case, save ecx, set ecx to SysCache and let the common part
41,8 → 43,11
; this request should be processed by hd_read.
cmp [ebp+PARTITION.Disk], 'old'
jnz @f
add eax, dword [ebp+PARTITION.FirstSector]
mov [hdd_appl_data], 1
jmp hd_read
call hd_read
mov eax, [hd_error]
ret
@@:
; In the normal case, save ecx, set ecx to AppCache and let the common part
; do its work.
63,7 → 68,7
ret
@@:
; 2. Get the absolute sector on the disk.
push edx
push edx esi
xor edx, edx
add eax, dword [ebp+PARTITION.FirstSector]
adc edx, dword [ebp+PARTITION.FirstSector+4]
75,15 → 80,16
push edx ; startsector
push eax ; startsector
push ebx ; buffer
mov esi, [ebp+PARTITION.Disk]
mov al, DISKFUNC.read
call disk_call_driver
pop ecx
pop edx
pop esi edx
pop ecx
ret
.scancache:
; 4. Scan the cache.
push esi edi ecx ; scan cache
push edi ecx ; scan cache
push edx eax
virtual at esp
.sector_lo dd ?
183,9 → 189,11
; this request should be processed by hd_write.
cmp [ebp+PARTITION.Disk], 'old'
jnz @f
add eax, dword [ebp+PARTITION.FirstSector]
mov [hdd_appl_data], 0
call hd_write
mov [hdd_appl_data], 1 ; restore to default state
mov eax, [hd_error]
ret
@@:
; In the normal case, save ecx, set ecx to SysCache and let the common part
206,8 → 214,11
; this request should be processed by hd_write.
cmp [ebp+PARTITION.Disk], 'old'
jnz @f
add eax, dword [ebp+PARTITION.FirstSector]
mov [hdd_appl_data], 1
jmp hd_write
call hd_write
mov eax, [hd_error]
ret
@@:
; In the normal case, save ecx, set ecx to AppCache and let the common part
; do its work.
227,7 → 238,7
pop ecx
ret
@@:
push edx
push edx esi
; 2. Get the absolute sector on the disk.
xor edx, edx
add eax, dword [ebp+PARTITION.FirstSector]
240,15 → 251,16
push edx ; startsector
push eax ; startsector
push ebx ; buffer
mov esi, [ebp+PARTITION.Disk]
mov al, DISKFUNC.write
call disk_call_driver
pop ecx
pop edx
pop esi edx
pop ecx
ret
.scancache:
; 4. Scan the cache.
push esi edi ecx ; scan cache
push edi ecx ; scan cache
push edx eax
virtual at esp
.sector_lo dd ?
348,7 → 360,7
jb .found_slot ; it's empty or read
dec ecx
jnz .search_for_empty
call write_cache64 ; no empty slots found, write all
stdcall write_cache64, [ebp+PARTITION.Disk] ; no empty slots found, write all
test eax, eax
jne .found_slot_access_denied
jmp .search_again ; and start again
359,7 → 371,7
ret
 
; This function is intended to replace the old 'write_cache' function.
proc write_cache64 uses ecx edx esi edi
proc write_cache64 uses ecx edx esi edi, disk:dword
locals
cache_chain_started dd ?
cache_chain_size dd ?
432,8 → 444,7
test eax, eax
jnz .nothing
.flush:
mov esi, [ebp]
mov esi, [esi+PARTITION.Disk]
mov esi, [disk]
mov al, DISKFUNC.flush
call disk_call_driver
.nothing:
590,3 → 601,26
stdcall kernel_free, eax
.nothing:
ret
 
; This function flushes all modified data from both caches for the given DISK.
; esi = pointer to DISK
disk_sync:
; Compatibility hack: if PARTITION.Disk is 'old', there is no DISK structure,
; this request should be processed by write_cache.
cmp esi, 'old'
jnz @f
mov [hdd_appl_data], 0
call write_cache
mov [hdd_appl_data], 1
jmp write_cache
@@:
; The algorithm is straightforward.
push esi
push esi ; for second write_cache64
push esi ; for first write_cache64
add esi, DISK.SysCache
call write_cache64
add esi, DISK.AppCache - DISK.SysCache
call write_cache64
pop esi
ret
/kernel/branches/Kolibri-acpi/blkdev/hd_drv.inc
945,3 → 945,83
@@:
ret
; \end{diamond}
 
reserve_hd1:
 
cli
cmp [hd1_status], 0
je reserve_ok1
 
sti
call change_task
jmp reserve_hd1
 
reserve_ok1:
 
push eax
mov eax, [CURRENT_TASK]
shl eax, 5
mov eax, [eax+CURRENT_TASK+TASKDATA.pid]
mov [hd1_status], eax
pop eax
sti
ret
;********************************************
 
uglobal
hd_in_cache db ?
endg
 
reserve_hd_channel:
; BIOS disk accesses are protected with common mutex hd1_status
; This must be modified when hd1_status will not be valid!
cmp [hdpos], 0x80
jae .ret
cmp [hdbase], 0x1F0
jne .IDE_Channel_2
.IDE_Channel_1:
cli
cmp [IDE_Channel_1], 0
je .reserve_ok_1
sti
call change_task
jmp .IDE_Channel_1
.IDE_Channel_2:
cli
cmp [IDE_Channel_2], 0
je .reserve_ok_2
sti
call change_task
jmp .IDE_Channel_2
.reserve_ok_1:
mov [IDE_Channel_1], 1
push eax
mov al, 1
jmp @f
.reserve_ok_2:
mov [IDE_Channel_2], 1
push eax
mov al, 3
@@:
cmp [hdid], 1
sbb al, -1
mov [hd_in_cache], al
pop eax
sti
.ret:
ret
 
free_hd_channel:
; see comment at reserve_hd_channel
cmp [hdpos], 0x80
jae .ret
cmp [hdbase], 0x1F0
jne .IDE_Channel_2
.IDE_Channel_1:
mov [IDE_Channel_1], 0
.ret:
ret
.IDE_Channel_2:
mov [IDE_Channel_2], 0
ret
;********************************************
/kernel/branches/Kolibri-acpi/blkdev/ide_cache.inc
137,8 → 137,6
;--------------------------------------------------------------------
align 4
clear_hd_cache:
mov [fat_in_cache], -1
mov [fat_change], 0
ret
;--------------------------------------------------------------------
align 4