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kolibri-ahci:

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- added write, seems to work

git-svn-id: svn://kolibrios.org@9166 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Rustem Gimadutdinov (rgimad) 2021-08-29 19:20:12 +00:00
parent 109befa1e4
commit f270456bab
1 changed files with 48 additions and 2 deletions
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50
kernel/branches/kolibri-ahci/blkdev/ahci.inc
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@ -328,7 +328,7 @@ ahci_callbacks:
dd 0 ; no closemedia function
dd ahci_querymedia
dd ahci_read
dd 0;ahci_write
dd ahci_write
dd 0 ; no flush function
dd 0 ; use default cache size
.end:
@ -981,7 +981,7 @@ proc ahci_rw_sectors stdcall pdata: dword, vbuf: dword, startsector: qword, nums
DEBUGF AHCI_DBGLVL, "sata_error register = 0x%x\n", [edi + HBA_PORT.sata_error]
DEBUGF AHCI_DBGLVL, "reading completed\n"
DEBUGF AHCI_DBGLVL, "R/W completed\n"
; xor ecx, ecx
; mov esi, [vbuf_orig]
@ -1068,6 +1068,52 @@ proc ahci_read stdcall pdata: dword, buffer: dword, startsector: qword, numsecto
ret
endp
; Write sectors
; return value: 0 = success, otherwise = error
proc ahci_write stdcall pdata: dword, buffer: dword, startsector: qword, numsectors_ptr:dword
locals
numsectors dd ?
endl
pushad
mov ecx, ahci_mutex
call mutex_lock
mov eax, [numsectors_ptr]
mov eax, [eax]
mov [numsectors], eax
DEBUGF AHCI_DBGLVL, " ahci_write: buffer = 0x%x, startsector = 0x%x:%x, numsectors = %u\n", [buffer], [startsector], [startsector + 4], eax
xor ecx, ecx ; how many sectors have been read
.write_loop:
cmp ecx, [numsectors]
jae .write_loop_end
mov ebx, [numsectors]
sub ebx, ecx
stdcall ahci_rw_sectors, [pdata], [buffer], dword [startsector], dword [startsector + 4], ebx, 1
;; TODO check if eax == 0 ?
DEBUGF AHCI_DBGLVL, " EAX = 0x%x\n", eax
add [buffer], eax
shr eax, 9 ; /= 512
add ecx, eax
add dword [startsector], eax
adc dword [startsector + 4], 0
jmp .write_loop
.write_loop_end:
mov ecx, ahci_mutex
call mutex_unlock
popad
xor eax, eax
ret
endp
; Start command engine
; in: eax - address of HBA_PORT structure
ahci_start_cmd: