dev/ppbus/pps.c

33 #include <dev/ppbus/ppbconf.h>
35 #include <dev/ppbus/ppbio.h>
46 	device_t ppbus;
88 ppstry(device_t ppbus, int send, int expect)
92 	ppb_wdtr(ppbus, send);
93 	i = ppb_rdtr(ppbus);
110 	device_t ppbus = device_get_parent(dev);
134 	ppb_init_callout(ppbus, &sc->timeout, 0);
136 	sc->ppbus = ppbus;
137 	unit = device_get_unit(ppbus);
146 	ppb_lock(ppbus);
147 	if (ppb_request_bus(ppbus, dev, PPB_DONTWAIT)) {
148 		ppb_unlock(ppbus);
153 		i = ppb_set_mode(sc->ppbus, PPB_EPP);
154 		PRVERBOSE("EPP: %d %d\n", i, PPB_IN_EPP_MODE(sc->ppbus));
158 		ppb_wctr(ppbus, i);
159 		if (ppstry(ppbus, 0x00, 0x00))
161 		if (ppstry(ppbus, 0x55, 0x55))
163 		if (ppstry(ppbus, 0xaa, 0xaa))
165 		if (ppstry(ppbus, 0xff, 0xff))
169 		ppb_wctr(ppbus, i);
170 		PRVERBOSE("CTR = %02x (%02x)\n", ppb_rctr(ppbus), i);
171 		if (ppstry(ppbus, 0x00, 0x00))
173 		if (ppstry(ppbus, 0x55, 0x00))
175 		if (ppstry(ppbus, 0xaa, 0x00))
177 		if (ppstry(ppbus, 0xff, 0x00))
181 		ppb_wctr(ppbus, i);
182 		PRVERBOSE("CTR = %02x (%02x)\n", ppb_rctr(ppbus), i);
183 		ppstry(ppbus, 0x00, 0xff);
184 		ppstry(ppbus, 0x55, 0xff);
185 		ppstry(ppbus, 0xaa, 0xff);
186 		ppstry(ppbus, 0xff, 0xff);
187 		ppb_unlock(ppbus);
198 		ppb_lock(ppbus);
200 	i = ppb_set_mode(sc->ppbus, PPB_COMPATIBLE);
201 	ppb_release_bus(ppbus, dev);
202 	ppb_unlock(ppbus);
211 	device_t ppbus = sc->ppbus;
218 	 * ppbus.
221 	ppb_lock(ppbus);
225 		if (ppb_request_bus(ppbus, ppsdev, PPB_WAIT|PPB_INTR)) {
226 			ppb_unlock(ppbus);
231 		i = ppb_set_mode(sc->ppbus, PPB_PS2);
232 		PRVERBOSE("EPP: %d %d\n", i, PPB_IN_EPP_MODE(sc->ppbus));
235 		ppb_wctr(ppbus, i);
240 		sc->lastdata = ppb_rdtr(sc->ppbus);
243 	ppb_unlock(ppbus);
256 	ppb_lock(sc->ppbus);
262 		device_t ppbus = sc->ppbus;
264 		ppb_wdtr(ppbus, 0);
265 		ppb_wctr(ppbus, 0);
267 		ppb_set_mode(ppbus, PPB_COMPATIBLE);
268 		ppb_release_bus(ppbus, ppsdev);
270 	ppb_unlock(sc->ppbus);
282 	i = ppb_rdtr(sc->ppbus);
304 	ppb_assert_locked(sc->ppbus);
306 	if (!(ppb_rstr(sc->ppbus) & nACK))
310 		ppb_wctr(sc->ppbus, IRQENABLE | AUTOFEED);
313 		ppb_wctr(sc->ppbus, IRQENABLE);
323 	ppb_lock(sc->ppbus);
325 	ppb_unlock(sc->ppbus);
343 DRIVER_MODULE(pps, ppbus, pps_driver, pps_devclass, 0, 0);
344 MODULE_DEPEND(pps, ppbus, 1, 1, 1);