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chore: sync repo

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d0p1 🏳️‍⚧️ 2024-07-23 07:50:35 +02:00
parent 593e8a2b9c
commit 53e6ae94ee
1 changed files with 45 additions and 8 deletions
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53
kernel/dev/at/ata.inc
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@ -1,7 +1,8 @@
;; File: ata.inc
;;
;; <ATA PIO Mode at https://wiki.osdev.org/ATA_PIO_Mode>
;; <IDE spec at https://www.cpcwiki.eu/imgs/a/a2/IDE_SPEC.PDF>
;; Usefull links:
;; - <ATA PIO Mode at https://wiki.osdev.org/ATA_PIO_Mode>
;; - <IDE spec at https://www.cpcwiki.eu/imgs/a/a2/IDE_SPEC.PDF>
ATA_PRIMARY_IO = 0x1F0
ATA_PRIMARY_IO_CTRL = 0x3F6
@ -76,10 +77,21 @@ ATA_CMD_IDENTIFY = 0xA0
ata_wait:
mov dx, ax
add dx, ATA_STATUS
xor ecx, ecx
@@:
inc ecx
cmp ecx, 5000
jg @f
in al, dx
and al, ATA_STATUS_BSY
jnz @b
@@:
ret
ata_select:
ret
ata_cmd:
ret
;; Function: ata_probe
@ -102,7 +114,9 @@ ata_probe:
out dx, al
mov ax, bx
push ecx
call ata_wait
pop ecx
mov dx, bx
add dx, ATA_COMMAND
@ -110,16 +124,20 @@ ata_probe:
out dx, al
mov ax, bx
push ecx
call ata_wait
pop ecx
mov dx, bx
add dx, ATA_STATUS
in al, dx
and al, ATA_STATUS_ERR or ATA_STATUS_DRQ
jnz @f
jnz .skip
mov ax, bx
push ecx
call ata_wait
pop ecx
mov dx, bx
add dx, ATA_COMMAND
@ -127,20 +145,39 @@ ata_probe:
out dx, al
mov ax, bx
push ecx
call ata_wait
pop ecx
mov dx, bx
add dx, ATA_STATUS
in al, dx
and al, ATA_STATUS_ERR or ATA_STATUS_DRQ
jnz @f
jnz .skip
push ecx
cmp ecx, ATA_CHAN1_IO
jne @f
add ecx, 2
jmp .drive_found
@@:
cmp ecx, ATA_CHAN2_IO
jne @f
add ecx, 4
jmp .drive_found
@@:
cmp ecx, ATA_CHAN3_IO
jne @f
add ecx, 8
jmp .drive_found
@@:
.drive_found:
push ecx
mov esi, szMsgAtaFound
call klog
pop ecx
@@:
.skip:
inc cl
cmp cl, 2
jb .loop
@ -172,9 +209,9 @@ ata_device:
aAtaChans:
dw ATA_CHAN0_IO
; dw ATA_CHAN1_IO
; dw ATA_CHAN2_IO
; dw ATA_CHAN3_IO
dw ATA_CHAN1_IO
dw ATA_CHAN2_IO
dw ATA_CHAN3_IO
.end:
szMsgAtaFound db "ATA: hd%u found", 0