42 #include <sys/bus.h>
59 do_1284_wait(device_t bus, uint8_t mask, uint8_t status)  in do_1284_wait()  argument
61 	return (ppb_poll_bus(bus, 4, mask, status, PPB_NOINTR | PPB_POLL));  in do_1284_wait()
65 do_peripheral_wait(device_t bus, uint8_t mask, uint8_t status)  in do_peripheral_wait()  argument
67 	return (ppb_poll_bus(bus, 100, mask, status, PPB_NOINTR | PPB_POLL));  in do_peripheral_wait()
78 ppb_1284_reset_error(device_t bus, int state)  in ppb_1284_reset_error()  argument
80 	struct ppb_data *ppb = DEVTOSOFTC(bus);  in ppb_1284_reset_error()
94 ppb_1284_get_state(device_t bus)  in ppb_1284_get_state()  argument
96 	struct ppb_data *ppb = DEVTOSOFTC(bus);  in ppb_1284_get_state()
108 ppb_1284_set_state(device_t bus, int state)  in ppb_1284_set_state()  argument
110 	struct ppb_data *ppb = DEVTOSOFTC(bus);  in ppb_1284_set_state()
125 ppb_1284_set_error(device_t bus, int error, int event)  in ppb_1284_set_error()  argument
127 	struct ppb_data *ppb = DEVTOSOFTC(bus);  in ppb_1284_set_error()
138 		ppb_rstr(bus) & 0xff, event);  in ppb_1284_set_error()
196 ppb_peripheral_negociate(device_t bus, int mode, int options)  in ppb_peripheral_negociate()  argument
201 	ppb_set_mode(bus, PPB_COMPATIBLE);  in ppb_peripheral_negociate()
202 	ppb_1284_set_state(bus, PPB_PERIPHERAL_NEGOCIATION);  in ppb_peripheral_negociate()
209 	while (spin-- && (ppb_rstr(bus) & nBUSY))  in ppb_peripheral_negociate()
213 	if (!(ppb_rstr(bus) & SELECT) || !spin) {  in ppb_peripheral_negociate()
219 	r = ppb_rdtr(bus);  in ppb_peripheral_negociate()
225 		ppb_wctr(bus, (STROBE | nINIT) & ~(SELECTIN));  in ppb_peripheral_negociate()
229 		ppb_wctr(bus, (nINIT) & ~(SELECTIN | STROBE));  in ppb_peripheral_negociate()
235 			ppb_1284_set_error(bus, PPB_MODE_UNSUPPORTED, 4);  in ppb_peripheral_negociate()
239 			ppb_1284_set_state(bus, PPB_PERIPHERAL_IDLE);  in ppb_peripheral_negociate()
242 				ppb_set_mode(bus, PPB_BYTE);  in ppb_peripheral_negociate()
254 		ppb_wctr(bus, SELECTIN);  in ppb_peripheral_negociate()
258 		ppb_wctr(bus, (SELECTIN) & ~(STROBE | nINIT));  in ppb_peripheral_negociate()
259 		ppb_1284_set_error(bus, PPB_MODE_UNSUPPORTED, 4);  in ppb_peripheral_negociate()
271 	ppb_peripheral_terminate(bus, PPB_WAIT);  in ppb_peripheral_negociate()
283 ppb_peripheral_terminate(device_t bus, int how)  in ppb_peripheral_terminate()  argument
291 	ppb_1284_set_state(bus, PPB_PERIPHERAL_TERMINATION);  in ppb_peripheral_terminate()
294 	if ((error = do_peripheral_wait(bus, SELECT | nBUSY, 0))) {  in ppb_peripheral_terminate()
295 		ppb_1284_set_error(bus, PPB_TIMEOUT, 22);  in ppb_peripheral_terminate()
300 	ppb_wctr(bus, (nINIT | STROBE) & ~(AUTOFEED | SELECTIN));  in ppb_peripheral_terminate()
303 	if ((error = do_peripheral_wait(bus, nBUSY, nBUSY))) {  in ppb_peripheral_terminate()
304 		ppb_1284_set_error(bus, PPB_TIMEOUT, 25);  in ppb_peripheral_terminate()
309 	ppb_wctr(bus, (SELECTIN | nINIT | STROBE) & ~(AUTOFEED));  in ppb_peripheral_terminate()
312 	ppb_wctr(bus, (SELECTIN | nINIT) & ~(STROBE | AUTOFEED));  in ppb_peripheral_terminate()
315 	if ((error = do_peripheral_wait(bus, nBUSY, 0))) {  in ppb_peripheral_terminate()
316 		ppb_1284_set_error(bus, PPB_TIMEOUT, 28);  in ppb_peripheral_terminate()
321 	ppb_set_mode(bus, PPB_COMPATIBLE);  in ppb_peripheral_terminate()
322 	ppb_1284_set_state(bus, PPB_FORWARD_IDLE);  in ppb_peripheral_terminate()
333 byte_peripheral_outbyte(device_t bus, char *buffer, int last)  in byte_peripheral_outbyte()  argument
338 	if ((error = do_1284_wait(bus, nBUSY, nBUSY))) {  in byte_peripheral_outbyte()
339 		ppb_1284_set_error(bus, PPB_TIMEOUT, 7);  in byte_peripheral_outbyte()
344 	if (!(ppb_rstr(bus) & SELECT)) {  in byte_peripheral_outbyte()
345 		ppb_peripheral_terminate(bus, PPB_WAIT);  in byte_peripheral_outbyte()
353 	ppb_wdtr(bus, *buffer);  in byte_peripheral_outbyte()
356 	ppb_wctr(bus, (AUTOFEED | STROBE) & ~(nINIT | SELECTIN));  in byte_peripheral_outbyte()
359 	if ((error = do_peripheral_wait(bus, nBUSY, 0))) {  in byte_peripheral_outbyte()
360 		ppb_1284_set_error(bus, PPB_TIMEOUT, 16);  in byte_peripheral_outbyte()
366 		ppb_wctr(bus, (AUTOFEED) & ~(nINIT | STROBE | SELECTIN));  in byte_peripheral_outbyte()
368 		ppb_wctr(bus, (nINIT) & ~(STROBE | SELECTIN | AUTOFEED));  in byte_peripheral_outbyte()
373 	if ((error = do_peripheral_wait(bus, nACK | nBUSY, 0))) {  in byte_peripheral_outbyte()
374 		ppb_1284_set_error(bus, PPB_TIMEOUT, 16);  in byte_peripheral_outbyte()
380 	if (!(ppb_rstr(bus) & SELECT)) {  in byte_peripheral_outbyte()
381 		ppb_peripheral_terminate(bus, PPB_WAIT);  in byte_peripheral_outbyte()
395 byte_peripheral_write(device_t bus, char *buffer, int len, int *sent)  in byte_peripheral_write()  argument
400 	ppb_1284_set_state(bus, PPB_PERIPHERAL_TRANSFER);  in byte_peripheral_write()
409 		r = ppb_rctr(bus);  in byte_peripheral_write()
410 		ppb_wctr(bus, r & ~nINIT);  in byte_peripheral_write()
416 		error = ppb_poll_bus(bus, PPB_FOREVER, nBUSY, nBUSY,  in byte_peripheral_write()
425 		if ((error = byte_peripheral_outbyte(bus, buffer+i, (i == len-1))))  in byte_peripheral_write()
430 		ppb_1284_set_state(bus, PPB_PERIPHERAL_IDLE);  in byte_peripheral_write()
442 byte_1284_inbyte(device_t bus, char *buffer)  in byte_1284_inbyte()  argument
447 	ppb_wctr(bus, (PCD | nINIT | AUTOFEED) & ~(STROBE | SELECTIN));  in byte_1284_inbyte()
450 	if ((error = do_1284_wait(bus, nACK, 0))) {  in byte_1284_inbyte()
451 		ppb_1284_set_error(bus, PPB_TIMEOUT, 9);  in byte_1284_inbyte()
456 	*buffer = ppb_rdtr(bus);  in byte_1284_inbyte()
459 	ppb_wctr(bus, (nINIT) & ~(AUTOFEED | STROBE | SELECTIN));  in byte_1284_inbyte()
462 	if ((error = do_1284_wait(bus, nACK, nACK))) {  in byte_1284_inbyte()
463 		ppb_1284_set_error(bus, PPB_TIMEOUT, 11);  in byte_1284_inbyte()
468 	ppb_wctr(bus, (nINIT | STROBE) & ~(AUTOFEED | SELECTIN));  in byte_1284_inbyte()
470 	ppb_wctr(bus, (nINIT) & ~(AUTOFEED | STROBE | SELECTIN));  in byte_1284_inbyte()
482 nibble_1284_inbyte(device_t bus, char *buffer)  in nibble_1284_inbyte()  argument
489 		ppb_wctr(bus, (nINIT | AUTOFEED) & ~(STROBE | SELECTIN));  in nibble_1284_inbyte()
494 		if ((error = do_1284_wait(bus, nACK, 0))) {  in nibble_1284_inbyte()
495 			ppb_1284_set_error(bus, PPB_TIMEOUT, 9);  in nibble_1284_inbyte()
500 		nibble[i] = ppb_rstr(bus);  in nibble_1284_inbyte()
503 		ppb_wctr(bus, nINIT & ~(AUTOFEED | STROBE | SELECTIN));  in nibble_1284_inbyte()
506 		if ((error = do_1284_wait(bus, nACK, nACK))) {  in nibble_1284_inbyte()
507 			ppb_1284_set_error(bus, PPB_TIMEOUT, 11);  in nibble_1284_inbyte()
525 spp_1284_read(device_t bus, int mode, char *buffer, int max, int *read)  in spp_1284_read()  argument
533 	state = ppb_1284_get_state(bus);  in spp_1284_read()
537 		if ((error = ppb_1284_negociate(bus, mode, 0)))  in spp_1284_read()
546 		ppb_1284_terminate(bus);  in spp_1284_read()
547 		if ((error = ppb_1284_negociate(bus, mode, 0)))  in spp_1284_read()
552 	while ((len < max) && !(ppb_rstr(bus) & (nFAULT))) {  in spp_1284_read()
553 		ppb_1284_set_state(bus, PPB_REVERSE_TRANSFER);  in spp_1284_read()
562 			if (nibble_1284_inbyte(bus, buffer+len))  in spp_1284_read()
566 			if (byte_1284_inbyte(bus, buffer+len))  in spp_1284_read()
578 		ppb_1284_set_state(bus, PPB_REVERSE_IDLE);  in spp_1284_read()
583 		ppb_1284_terminate(bus);  in spp_1284_read()
593 ppb_1284_read_id(device_t bus, int mode, char *buffer,  in ppb_1284_read_id()  argument
604 		if ((error = ppb_1284_negociate(bus, PPB_NIBBLE, PPB_REQUEST_ID)))  in ppb_1284_read_id()
606 		error = spp_1284_read(bus, PPB_NIBBLE, buffer, max, read);  in ppb_1284_read_id()
609 		if ((error = ppb_1284_negociate(bus, PPB_BYTE, PPB_REQUEST_ID)))  in ppb_1284_read_id()
611 		error = spp_1284_read(bus, PPB_BYTE, buffer, max, read);  in ppb_1284_read_id()
617 	ppb_1284_terminate(bus);  in ppb_1284_read_id()
627 ppb_1284_read(device_t bus, int mode, char *buffer,  in ppb_1284_read()  argument
635 		error = spp_1284_read(bus, mode, buffer, max, read);  in ppb_1284_read()
654 ppb_1284_negociate(device_t bus, int mode, int options)  in ppb_1284_negociate()  argument
663 	if (ppb_1284_get_state(bus) >= PPB_PERIPHERAL_NEGOCIATION)  in ppb_1284_negociate()
664 		ppb_peripheral_terminate(bus, PPB_WAIT);  in ppb_1284_negociate()
666 	if (ppb_1284_get_state(bus) != PPB_FORWARD_IDLE)  in ppb_1284_negociate()
667 		ppb_1284_terminate(bus);  in ppb_1284_negociate()
674 	ppb_set_mode(bus, PPB_COMPATIBLE);  in ppb_1284_negociate()
677 	ppb_1284_reset_error(bus, PPB_FORWARD_IDLE);  in ppb_1284_negociate()
683 	ppb_wctr(bus, (nINIT | SELECTIN) & ~(STROBE | AUTOFEED));  in ppb_1284_negociate()
687 	ppb_1284_set_state(bus, PPB_NEGOCIATION);  in ppb_1284_negociate()
690 	ppb_wdtr(bus, request_mode);  in ppb_1284_negociate()
694 	ppb_wctr(bus, (nINIT | STROBE) & ~(AUTOFEED | SELECTIN));  in ppb_1284_negociate()
696 	ppb_wctr(bus, (nINIT) & ~(STROBE | AUTOFEED | SELECTIN));  in ppb_1284_negociate()
703 	ppb_wctr(bus, (nINIT | AUTOFEED) & ~(STROBE | SELECTIN));  in ppb_1284_negociate()
708 	if (ppb_poll_bus(bus, 40, nACK | SELECT | nFAULT,  in ppb_1284_negociate()
710 		ppb_1284_set_error(bus, PPB_NOT_IEEE1284, 2);  in ppb_1284_negociate()
716 	if (do_1284_wait(bus, nACK | PERROR | SELECT | nFAULT,  in ppb_1284_negociate()
718 		ppb_1284_set_error(bus, PPB_NOT_IEEE1284, 2);  in ppb_1284_negociate()
725 	ppb_wctr(bus, (nINIT | STROBE | AUTOFEED) & ~SELECTIN);  in ppb_1284_negociate()
729 	ppb_wctr(bus, nINIT & ~(SELECTIN | AUTOFEED | STROBE));  in ppb_1284_negociate()
732 	if (do_1284_wait(bus, nACK, nACK)) {  in ppb_1284_negociate()
733 		ppb_1284_set_error(bus, PPB_TIMEOUT, 6);  in ppb_1284_negociate()
742 		ppb_1284_terminate(bus);  in ppb_1284_negociate()
746 		if (do_1284_wait(bus, nACK | SELECT, nACK)) {  in ppb_1284_negociate()
747 			ppb_1284_set_error(bus, PPB_MODE_UNSUPPORTED, 7);  in ppb_1284_negociate()
752 		if (do_1284_wait(bus, nACK | SELECT, SELECT | nACK)) {  in ppb_1284_negociate()
753 			ppb_1284_set_error(bus, PPB_MODE_UNSUPPORTED, 7);  in ppb_1284_negociate()
763 		ppb_1284_set_state(bus, PPB_REVERSE_IDLE);  in ppb_1284_negociate()
767 		ppb_1284_set_state(bus, PPB_SETUP);  in ppb_1284_negociate()
768 		ppb_wctr(bus, (nINIT | AUTOFEED) & ~(SELECTIN | STROBE));  in ppb_1284_negociate()
772 		if (do_1284_wait(bus, nACK | SELECT | nBUSY,  in ppb_1284_negociate()
774 			ppb_1284_set_error(bus, PPB_TIMEOUT, 30);  in ppb_1284_negociate()
779 		if (do_1284_wait(bus, nACK | SELECT | PERROR | nBUSY,  in ppb_1284_negociate()
781 			ppb_1284_set_error(bus, PPB_TIMEOUT, 30);  in ppb_1284_negociate()
788 		ppb_1284_set_state(bus, PPB_ECP_FORWARD_IDLE);  in ppb_1284_negociate()
791 		ppb_1284_set_state(bus, PPB_EPP_IDLE);  in ppb_1284_negociate()
797 	ppb_set_mode(bus, mode);  in ppb_1284_negociate()
802 	ppb_1284_terminate(bus);  in ppb_1284_negociate()
814 ppb_1284_terminate(device_t bus)  in ppb_1284_terminate()  argument
823 	ppb_1284_set_state(bus, PPB_TERMINATION);  in ppb_1284_terminate()
827 	ppb_wctr(bus, (nINIT | STROBE | SELECTIN) & ~(AUTOFEED));  in ppb_1284_terminate()
832 	ppb_wctr(bus, (nINIT | SELECTIN) & ~(STROBE | AUTOFEED));  in ppb_1284_terminate()
835 	if (do_1284_wait(bus, nACK | nBUSY | nFAULT, nFAULT)) {  in ppb_1284_terminate()
836 		ppb_1284_set_error(bus, PPB_TIMEOUT, 24);  in ppb_1284_terminate()
841 	ppb_wctr(bus, (nINIT | SELECTIN | AUTOFEED) & ~STROBE);  in ppb_1284_terminate()
846 	if (do_1284_wait(bus, nACK, nACK)) {  in ppb_1284_terminate()
847 		ppb_1284_set_error(bus, PPB_TIMEOUT, 27);  in ppb_1284_terminate()
851 	ppb_wctr(bus, (nINIT | SELECTIN) & ~(STROBE | AUTOFEED));  in ppb_1284_terminate()
855 	ppb_set_mode(bus, PPB_COMPATIBLE);  in ppb_1284_terminate()
856 	ppb_1284_set_state(bus, PPB_FORWARD_IDLE);  in ppb_1284_terminate()