sound/macio/aoa.c

71 aoa_dma_set_program(struct aoa_dma *dma)
76 	addr = (u_int32_t) sndbuf_getbufaddr(dma->buf);
77 	KASSERT(dma->bufsz == sndbuf_getsize(dma->buf), ("bad size"));
79 	dma->slots = dma->bufsz / dma->blksz;
81 	for (i = 0; i < dma->slots; ++i) {
82 		dbdma_insert_command(dma->channel,
87 		    dma->blksz, /* count */
91 		    dma->slots + 1 /* branch_slot */
94 		addr += dma->blksz;
98 	dbdma_insert_branch(dma->channel, dma->slots, 0);
101 	dbdma_insert_stop(dma->channel, dma->slots + 1);
104 	dbdma_set_branch_selector(dma->channel, 1 << 0, 1 << 0);
105 	dbdma_set_device_status(dma->channel, 1 << 0, 0);
107 	dbdma_sync_commands(dma->channel, BUS_DMASYNC_PREWRITE);
115 	struct aoa_dma *dma;
127 	dma = malloc(sizeof(*dma), M_DEVBUF, M_WAITOK | M_ZERO);
128 	dma->tag = tag;
129 	dma->bufsz = AOA_BUFFER_SIZE;
130 	dma->blksz = PAGE_SIZE; /* initial blocksize */
132 	mtx_init(&dma->mutex, "AOA", NULL, MTX_DEF);
134 	sc->sc_intrp = dma;
136 	return (dma);
140 aoa_dma_delete(struct aoa_dma *dma)
142 	bus_dma_tag_destroy(dma->tag);
143 	mtx_destroy(&dma->mutex);
144 	free(dma, M_DEVBUF);
150 	struct aoa_dma 		*dma = data;
153 	DPRINTF(("aoa_chan_setblocksize: blocksz = %u, dma->blksz = %u\n",
154 		blocksz, dma->blksz));
155 	KASSERT(!dma->running, ("dma is running"));
164 	if (blocksz > dma->bufsz)
165 		blocksz = dma->bufsz;
167 	err = sndbuf_resize(dma->buf, dma->bufsz / blocksz, blocksz);
173 	if (blocksz == dma->blksz)
174 		return (dma->blksz);
177 	err = dbdma_resize_channel(dma->channel, 2 + dma->bufsz / blocksz);
184 	dma->blksz = blocksz;
185 	aoa_dma_set_program(dma);
187 	return (dma->blksz);
212 	struct aoa_dma 	 *dma = data;
214 	if (!dma->running)
217 	return (dma->slot * dma->blksz);
225 	struct aoa_dma		*dma;
230 	dma = aoa_dma_create(sc);
231 	if (!dma)
233 	dma->pcm = c;
234 	dma->buf = b;
235 	dma->reg = sc->sc_odma;
238 	max_slots = 2 + dma->bufsz / dma->blksz;
239 	err = dbdma_allocate_channel(dma->reg, 0, bus_get_dma_tag(sc->sc_dev),
240 	    max_slots, &dma->channel );
242 		aoa_dma_delete(dma);
246 	if (sndbuf_alloc(dma->buf, dma->tag, 0, dma->bufsz) != 0) {
247 		dbdma_free_channel(dma->channel);
248 		aoa_dma_delete(dma);
252 	aoa_dma_set_program(dma);
254 	return (dma);
260 	struct aoa_dma 	*dma = data;
267 		dma->running = 1;
269 		dma->slot = 0;
270 		dbdma_set_current_cmd(dma->channel, dma->slot);
272 		dbdma_run(dma->channel);
279 		mtx_lock(&dma->mutex);
281 		dma->running = 0;
284 		dbdma_set_device_status(dma->channel, 1 << 0, 1 << 0);
290 		dbdma_stop(dma->channel);
291 		dbdma_set_device_status(dma->channel, 1 << 0, 0);
293 		for (i = 0; i < dma->slots; ++i)
294 			dbdma_clear_cmd_status(dma->channel, i);
296 		mtx_unlock(&dma->mutex);
307 	struct aoa_dma 	*dma = data;
309 	sndbuf_free(dma->buf);
310 	dbdma_free_channel(dma->channel);
311 	aoa_dma_delete(dma);
320 	struct aoa_dma		*dma;
322 	if (!(dma = sc->sc_intrp) || !dma->running)
325 	mtx_lock(&dma->mutex);
327 	while (dbdma_get_cmd_status(dma->channel, dma->slot)) {
329 		dbdma_clear_cmd_status(dma->channel, dma->slot);
330 		dma->slot = (dma->slot + 1) % dma->slots;
332 		mtx_unlock(&dma->mutex);
333 		chn_intr(dma->pcm);
334 		mtx_lock(&dma->mutex);
337 	mtx_unlock(&dma->mutex);