dev/adlink/adlink.c

109 	struct page0		*p0;
141 	sc->sample += sc->p0->chunksize / 2;
147 		sc->p0->state = EIO;
149 	if (sc->p0->state != STATE_RUN) {
150 		printf("adlink: stopping %d\n", sc->p0->state);
158 	bus_write_4(sc->res[0], 0x28, sc->p0->chunksize);
176 		*paddr = vtophys(sc->p0);
182 		if (offset - o >= sc->p0->chunksize) {
183 			o += sc->p0->chunksize;
206 		if (sc->p0->state == STATE_RUN)
210 		sc->p0->divisor = u;
213 		if (sc->p0->state != STATE_RESET)
217 		if (sc->p0->ringsize != 0 && sc->p0->ringsize % u)
219 		sc->p0->chunksize = u;
222 		if (sc->p0->state != STATE_RESET)
226 		if (sc->p0->chunksize != 0 && u % sc->p0->chunksize)
228 		sc->p0->ringsize = u;
231 		if (sc->p0->state == STATE_RUN)
233 		if (sc->p0->state == STATE_RESET) {
235 			if (sc->p0->chunksize == 0)
236 				sc->p0->chunksize = 4 * PAGE_SIZE;
237 			if (sc->p0->ringsize == 0)
238 				sc->p0->ringsize = 16 * sc->p0->chunksize;
239 			if (sc->p0->divisor == 0)
240 				sc->p0->divisor = 4;
242 			sc->nchunks = sc->p0->ringsize / sc->p0->chunksize;
244 			    sizeof *sc->p0 > PAGE_SIZE)
246 			sc->p0->o_ring = PAGE_SIZE;
247 			sample = (uint64_t *)(sc->p0 + 1);
248 			sc->p0->o_sample =
249 			    (uintptr_t)sample - (uintptr_t)(sc->p0);
257 				pg->virt = contigmalloc(sc->p0->chunksize,
285 		bus_write_4(sc->res[1], 0x04, sc->p0->divisor);
303 		sc->p0->state = STATE_RUN;
309 		bus_write_4(sc->res[0], 0x28, sc->p0->chunksize);
318 		if (sc->p0->state == STATE_RESET)
320 		sc->p0->state = EINTR;
330 		if (sc->p0->state == STATE_RESET)
332 		sc->p0->state = EINTR;
392 	sc->p0 = malloc(PAGE_SIZE, M_DEVBUF, M_WAITOK | M_ZERO);
393 	sc->p0->version = PAGE0VERSION;
394 	sc->p0->state = STATE_RESET;