Subversion Repositories Kolibri OS

;      check_tx_status

;      check_tx_status

;   Description

;   Description

;      Checks TxStatus queue.

;      Checks TxStatus queue.

;   Return value

;   Return value

;      al - 0 no error was found

;      al - 0 no error was found

;   Destroyed registers

;   Destroyed registers

;      eax, ecx, edx, ebp

;      eax, ecx, edx, ebp

;

;

;***************************************************************************

;***************************************************************************

  .tx_status_loop:

  .tx_status_loop:

	in	al, dx

	in	al, dx

	test	al, al

	test	al, al

	jz	.finish ; no error

	jz	.finish ; no error

	test	al, 0x3f

	test	al, 0x3f

  .no_error_found:

  .no_error_found:

; clear current TxStatus entry which advances the next one

; clear current TxStatus entry which advances the next one

	xor	al, al

	xor	al, al

	out	dx, al

	out	dx, al

	loop	.tx_status_loop

	loop	.tx_status_loop

  .finish:

  .finish:

	call	tx_reset

	ret

	ret

	cmp	dword [esp+8], MAX_ETH_FRAME_SIZE

	cmp	dword [esp+8], MAX_ETH_FRAME_SIZE

	ja	.finish ; packet is too long

	ja	.finish ; packet is too long

	test	al, al

	jnz	tx_reset

	call	check_tx_status

; switch to register window 7

; switch to register window 7

	cmp	dword [esp+8], MAX_ETH_FRAME_SIZE

	cmp	dword [esp+8], MAX_ETH_FRAME_SIZE

	jg	.fail

	jg	.fail

	jnz	tx_reset

	call	check_tx_status

; calculate descriptor address

; calculate descriptor address

	mov	esi, [device.prev_dpd]

	mov	esi, [device.prev_dpd]

	DEBUGF	1,"Previous DPD: %x\n", esi

	DEBUGF	1,"Previous DPD: %x\n", esi