35 size_t parport_ieee1284_write_compat (struct parport *port,  in parport_ieee1284_write_compat()  argument
43 	struct pardevice *dev = port->physport->cad;  in parport_ieee1284_write_compat()
47 	if (port->irq != PARPORT_IRQ_NONE) {  in parport_ieee1284_write_compat()
48 		parport_enable_irq (port);  in parport_ieee1284_write_compat()
52 	port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;  in parport_ieee1284_write_compat()
53 	parport_write_control (port, ctl);  in parport_ieee1284_write_compat()
54 	parport_data_forward (port);  in parport_ieee1284_write_compat()
66 			if (!parport_wait_peripheral (port, mask, val))  in parport_ieee1284_write_compat()
71 			if ((parport_read_status (port) &  in parport_ieee1284_write_compat()
99 				parport_wait_event (port, wait);  in parport_ieee1284_write_compat()
112 		pr_debug("%s: Timed out\n", port->name);  in parport_ieee1284_write_compat()
118 		parport_write_data (port, byte);  in parport_ieee1284_write_compat()
122 		parport_write_control (port, ctl | PARPORT_CONTROL_STROBE);  in parport_ieee1284_write_compat()
125 		parport_write_control (port, ctl);  in parport_ieee1284_write_compat()
138 	port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;  in parport_ieee1284_write_compat()
144 size_t parport_ieee1284_read_nibble (struct parport *port,   in parport_ieee1284_read_nibble()  argument
161 		    (parport_read_status(port) & PARPORT_STATUS_ERROR)) {  in parport_ieee1284_read_nibble()
166 		parport_frob_control (port,  in parport_ieee1284_read_nibble()
171 		port->ieee1284.phase = IEEE1284_PH_REV_DATA;  in parport_ieee1284_read_nibble()
172 		if (parport_wait_peripheral (port,  in parport_ieee1284_read_nibble()
176 				 port->name, i / 2);  in parport_ieee1284_read_nibble()
177 			parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);  in parport_ieee1284_read_nibble()
183 		nibble = parport_read_status (port) >> 3;  in parport_ieee1284_read_nibble()
190 		parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);  in parport_ieee1284_read_nibble()
193 		if (parport_wait_peripheral (port,  in parport_ieee1284_read_nibble()
198 				 port->name);  in parport_ieee1284_read_nibble()
212 		if (parport_read_status (port) & PARPORT_STATUS_ERROR) {  in parport_ieee1284_read_nibble()
215 				 port->name, i / 2);  in parport_ieee1284_read_nibble()
218 			parport_frob_control (port,  in parport_ieee1284_read_nibble()
221 			port->physport->ieee1284.phase = IEEE1284_PH_REV_IDLE;  in parport_ieee1284_read_nibble()
224 			port->physport->ieee1284.phase = IEEE1284_PH_HBUSY_DAVAIL;  in parport_ieee1284_read_nibble()
232 size_t parport_ieee1284_read_byte (struct parport *port,  in parport_ieee1284_read_byte()  argument
246 		if (parport_read_status (port) & PARPORT_STATUS_ERROR) {  in parport_ieee1284_read_byte()
251 		parport_data_reverse (port);  in parport_ieee1284_read_byte()
254 		parport_frob_control (port,  in parport_ieee1284_read_byte()
259 		port->physport->ieee1284.phase = IEEE1284_PH_REV_DATA;  in parport_ieee1284_read_byte()
260 		if (parport_wait_peripheral (port,  in parport_ieee1284_read_byte()
264 			parport_frob_control (port, PARPORT_CONTROL_AUTOFD,  in parport_ieee1284_read_byte()
266 			pr_debug("%s: Byte timeout at event 9\n", port->name);  in parport_ieee1284_read_byte()
270 		byte = parport_read_data (port);  in parport_ieee1284_read_byte()
274 		parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);  in parport_ieee1284_read_byte()
277 		if (parport_wait_peripheral (port,  in parport_ieee1284_read_byte()
281 			pr_debug("%s: Byte timeout at event 11\n", port->name);  in parport_ieee1284_read_byte()
286 		parport_frob_control (port,  in parport_ieee1284_read_byte()
292 		parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);  in parport_ieee1284_read_byte()
297 		if (parport_read_status (port) & PARPORT_STATUS_ERROR) {  in parport_ieee1284_read_byte()
300 				 port->name, count);  in parport_ieee1284_read_byte()
303 			parport_frob_control (port,  in parport_ieee1284_read_byte()
306 			port->physport->ieee1284.phase = IEEE1284_PH_REV_IDLE;  in parport_ieee1284_read_byte()
309 			port->physport->ieee1284.phase = IEEE1284_PH_HBUSY_DAVAIL;  in parport_ieee1284_read_byte()
323 int ecp_forward_to_reverse (struct parport *port)  in ecp_forward_to_reverse()  argument
328 	parport_frob_control (port,  in ecp_forward_to_reverse()
331 	parport_data_reverse (port);  in ecp_forward_to_reverse()
335 	parport_frob_control (port,  in ecp_forward_to_reverse()
340 	retval = parport_wait_peripheral (port,  in ecp_forward_to_reverse()
344 		pr_debug("%s: ECP direction: reverse\n", port->name);  in ecp_forward_to_reverse()
345 		port->ieee1284.phase = IEEE1284_PH_REV_IDLE;  in ecp_forward_to_reverse()
347 		pr_debug("%s: ECP direction: failed to reverse\n", port->name);  in ecp_forward_to_reverse()
348 		port->ieee1284.phase = IEEE1284_PH_ECP_DIR_UNKNOWN;  in ecp_forward_to_reverse()
355 int ecp_reverse_to_forward (struct parport *port)  in ecp_reverse_to_forward()  argument
360 	parport_frob_control (port,  in ecp_reverse_to_forward()
367 	retval = parport_wait_peripheral (port,  in ecp_reverse_to_forward()
372 		parport_data_forward (port);  in ecp_reverse_to_forward()
373 		pr_debug("%s: ECP direction: forward\n", port->name);  in ecp_reverse_to_forward()
374 		port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;  in ecp_reverse_to_forward()
377 			 port->name);  in ecp_reverse_to_forward()
378 		port->ieee1284.phase = IEEE1284_PH_ECP_DIR_UNKNOWN;  in ecp_reverse_to_forward()
388 size_t parport_ieee1284_ecp_write_data (struct parport *port,  in parport_ieee1284_ecp_write_data()  argument
399 	port = port->physport;  in parport_ieee1284_ecp_write_data()
401 	if (port->ieee1284.phase != IEEE1284_PH_FWD_IDLE)  in parport_ieee1284_ecp_write_data()
402 		if (ecp_reverse_to_forward (port))  in parport_ieee1284_ecp_write_data()
405 	port->ieee1284.phase = IEEE1284_PH_FWD_DATA;  in parport_ieee1284_ecp_write_data()
408 	parport_frob_control (port,  in parport_ieee1284_ecp_write_data()
414 		unsigned long expire = jiffies + port->cad->timeout;  in parport_ieee1284_ecp_write_data()
419 		parport_write_data (port, byte);  in parport_ieee1284_ecp_write_data()
420 		parport_frob_control (port, PARPORT_CONTROL_STROBE,  in parport_ieee1284_ecp_write_data()
424 			if (!parport_wait_peripheral (port,  in parport_ieee1284_ecp_write_data()
429 				parport_frob_control (port,  in parport_ieee1284_ecp_write_data()
437 		pr_debug("%s: ECP transfer stalled!\n", port->name);  in parport_ieee1284_ecp_write_data()
439 		parport_frob_control (port, PARPORT_CONTROL_INIT,  in parport_ieee1284_ecp_write_data()
442 		if (parport_read_status (port) & PARPORT_STATUS_PAPEROUT) {  in parport_ieee1284_ecp_write_data()
444 			parport_frob_control (port, PARPORT_CONTROL_INIT, 0);  in parport_ieee1284_ecp_write_data()
448 		parport_frob_control (port, PARPORT_CONTROL_INIT, 0);  in parport_ieee1284_ecp_write_data()
450 		if (!(parport_read_status (port) & PARPORT_STATUS_PAPEROUT))  in parport_ieee1284_ecp_write_data()
453 		pr_debug("%s: Host transfer recovered\n", port->name);  in parport_ieee1284_ecp_write_data()
458 		parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);  in parport_ieee1284_ecp_write_data()
460 		if (parport_wait_peripheral (port,  in parport_ieee1284_ecp_write_data()
467 	port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;  in parport_ieee1284_ecp_write_data()
474 size_t parport_ieee1284_ecp_read_data (struct parport *port,  in parport_ieee1284_ecp_read_data()  argument
480 	struct pardevice *dev = port->cad;  in parport_ieee1284_ecp_read_data()
487 	port = port->physport;  in parport_ieee1284_ecp_read_data()
489 	if (port->ieee1284.phase != IEEE1284_PH_REV_IDLE)  in parport_ieee1284_ecp_read_data()
490 		if (ecp_forward_to_reverse (port))  in parport_ieee1284_ecp_read_data()
493 	port->ieee1284.phase = IEEE1284_PH_REV_DATA;  in parport_ieee1284_ecp_read_data()
496 	ctl = parport_read_control (port);  in parport_ieee1284_ecp_read_data()
499 	parport_write_control (port,  in parport_ieee1284_ecp_read_data()
508 		while (parport_wait_peripheral (port, PARPORT_STATUS_ACK, 0)) {  in parport_ieee1284_ecp_read_data()
521 			if (dev->port->irq != PARPORT_IRQ_NONE) {  in parport_ieee1284_ecp_read_data()
528 				parport_wait_event (port, msecs_to_jiffies(40));  in parport_ieee1284_ecp_read_data()
541 			command = (parport_read_status (port) &  in parport_ieee1284_ecp_read_data()
545 		byte = parport_read_data (port);  in parport_ieee1284_ecp_read_data()
552 					 port->name, byte);  in parport_ieee1284_ecp_read_data()
555 			else if (port->ieee1284.mode != IEEE1284_MODE_ECPRLE)  in parport_ieee1284_ecp_read_data()
557 					 port->name);  in parport_ieee1284_ecp_read_data()
564 					 port->name, rle_count);  in parport_ieee1284_ecp_read_data()
572 		parport_write_control (port, ctl);  in parport_ieee1284_ecp_read_data()
575 		if (parport_wait_peripheral (port, PARPORT_STATUS_ACK,  in parport_ieee1284_ecp_read_data()
583 					port->name, byte);  in parport_ieee1284_ecp_read_data()
589 		parport_write_control (port,  in parport_ieee1284_ecp_read_data()
603 				 port->name, rle_count);  in parport_ieee1284_ecp_read_data()
612 	port->ieee1284.phase = IEEE1284_PH_REV_IDLE;  in parport_ieee1284_ecp_read_data()
618 size_t parport_ieee1284_ecp_write_addr (struct parport *port,  in parport_ieee1284_ecp_write_addr()  argument
629 	port = port->physport;  in parport_ieee1284_ecp_write_addr()
631 	if (port->ieee1284.phase != IEEE1284_PH_FWD_IDLE)  in parport_ieee1284_ecp_write_addr()
632 		if (ecp_reverse_to_forward (port))  in parport_ieee1284_ecp_write_addr()
635 	port->ieee1284.phase = IEEE1284_PH_FWD_DATA;  in parport_ieee1284_ecp_write_addr()
638 	parport_frob_control (port,  in parport_ieee1284_ecp_write_addr()
645 		unsigned long expire = jiffies + port->cad->timeout;  in parport_ieee1284_ecp_write_addr()
650 		parport_write_data (port, byte);  in parport_ieee1284_ecp_write_addr()
651 		parport_frob_control (port, PARPORT_CONTROL_STROBE,  in parport_ieee1284_ecp_write_addr()
655 			if (!parport_wait_peripheral (port,  in parport_ieee1284_ecp_write_addr()
660 				parport_frob_control (port,  in parport_ieee1284_ecp_write_addr()
668 		pr_debug("%s: ECP transfer stalled!\n", port->name);  in parport_ieee1284_ecp_write_addr()
670 		parport_frob_control (port, PARPORT_CONTROL_INIT,  in parport_ieee1284_ecp_write_addr()
673 		if (parport_read_status (port) & PARPORT_STATUS_PAPEROUT) {  in parport_ieee1284_ecp_write_addr()
675 			parport_frob_control (port, PARPORT_CONTROL_INIT, 0);  in parport_ieee1284_ecp_write_addr()
679 		parport_frob_control (port, PARPORT_CONTROL_INIT, 0);  in parport_ieee1284_ecp_write_addr()
681 		if (!(parport_read_status (port) & PARPORT_STATUS_PAPEROUT))  in parport_ieee1284_ecp_write_addr()
684 		pr_debug("%s: Host transfer recovered\n", port->name);  in parport_ieee1284_ecp_write_addr()
689 		parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);  in parport_ieee1284_ecp_write_addr()
691 		if (parport_wait_peripheral (port,  in parport_ieee1284_ecp_write_addr()
698 	port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;  in parport_ieee1284_ecp_write_addr()
709 size_t parport_ieee1284_epp_write_data (struct parport *port,  in parport_ieee1284_epp_write_data()  argument
717 	parport_frob_control (port,  in parport_ieee1284_epp_write_data()
724 	port->ops->data_forward (port);  in parport_ieee1284_epp_write_data()
727 		parport_write_data (port, *bp);  in parport_ieee1284_epp_write_data()
728 		parport_frob_control (port, PARPORT_CONTROL_AUTOFD,  in parport_ieee1284_epp_write_data()
732 		if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY, 0, 10))  in parport_ieee1284_epp_write_data()
736 		parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);  in parport_ieee1284_epp_write_data()
739 		if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY,  in parport_ieee1284_epp_write_data()
747 	parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);  in parport_ieee1284_epp_write_data()
753 size_t parport_ieee1284_epp_read_data (struct parport *port,  in parport_ieee1284_epp_read_data()  argument
761 	parport_frob_control (port,  in parport_ieee1284_epp_read_data()
767 	port->ops->data_reverse (port);  in parport_ieee1284_epp_read_data()
770 		parport_frob_control (port,  in parport_ieee1284_epp_read_data()
774 		if (parport_wait_peripheral (port, PARPORT_STATUS_BUSY, 0)) {  in parport_ieee1284_epp_read_data()
778 		*bp = parport_read_data (port);  in parport_ieee1284_epp_read_data()
781 		parport_frob_control (port, PARPORT_CONTROL_AUTOFD, 0);  in parport_ieee1284_epp_read_data()
784 		if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY,  in parport_ieee1284_epp_read_data()
791 	port->ops->data_forward (port);  in parport_ieee1284_epp_read_data()
797 size_t parport_ieee1284_epp_write_addr (struct parport *port,  in parport_ieee1284_epp_write_addr()  argument
805 	parport_frob_control (port,  in parport_ieee1284_epp_write_addr()
812 	port->ops->data_forward (port);  in parport_ieee1284_epp_write_addr()
815 		parport_write_data (port, *bp);  in parport_ieee1284_epp_write_addr()
816 		parport_frob_control (port, PARPORT_CONTROL_SELECT,  in parport_ieee1284_epp_write_addr()
820 		if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY, 0, 10))  in parport_ieee1284_epp_write_addr()
824 		parport_frob_control (port, PARPORT_CONTROL_SELECT, 0);  in parport_ieee1284_epp_write_addr()
827 		if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY,  in parport_ieee1284_epp_write_addr()
835 	parport_frob_control (port, PARPORT_CONTROL_STROBE, 0);  in parport_ieee1284_epp_write_addr()
841 size_t parport_ieee1284_epp_read_addr (struct parport *port,  in parport_ieee1284_epp_read_addr()  argument
849 	parport_frob_control (port,  in parport_ieee1284_epp_read_addr()
855 	port->ops->data_reverse (port);  in parport_ieee1284_epp_read_addr()
858 		parport_frob_control (port, PARPORT_CONTROL_SELECT,  in parport_ieee1284_epp_read_addr()
862 		if (parport_wait_peripheral (port, PARPORT_STATUS_BUSY, 0)) {  in parport_ieee1284_epp_read_addr()
866 		*bp = parport_read_data (port);  in parport_ieee1284_epp_read_addr()
869 		parport_frob_control (port, PARPORT_CONTROL_SELECT,  in parport_ieee1284_epp_read_addr()
873 		if (parport_poll_peripheral (port, PARPORT_STATUS_BUSY,   in parport_ieee1284_epp_read_addr()
879 	port->ops->data_forward (port);  in parport_ieee1284_epp_read_addr()