64 static int snd_pmac_dbdma_alloc(struct snd_pmac *chip, struct pmac_dbdma *rec, int size)  in snd_pmac_dbdma_alloc()  argument
68 	rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,  in snd_pmac_dbdma_alloc()
69 					&rec->dma_base, GFP_KERNEL);  in snd_pmac_dbdma_alloc()
70 	if (rec->space == NULL)  in snd_pmac_dbdma_alloc()
72 	rec->size = size;  in snd_pmac_dbdma_alloc()
73 	memset(rec->space, 0, rsize);  in snd_pmac_dbdma_alloc()
74 	rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);  in snd_pmac_dbdma_alloc()
75 	rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);  in snd_pmac_dbdma_alloc()
80 static void snd_pmac_dbdma_free(struct snd_pmac *chip, struct pmac_dbdma *rec)  in snd_pmac_dbdma_free()  argument
82 	if (rec->space) {  in snd_pmac_dbdma_free()
83 		unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);  in snd_pmac_dbdma_free()
85 		dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);  in snd_pmac_dbdma_free()
98 unsigned int snd_pmac_rate_index(struct snd_pmac *chip, struct pmac_stream *rec, unsigned int rate)  in snd_pmac_rate_index()  argument
102 	ok = rec->cur_freqs;  in snd_pmac_rate_index()
162 snd_pmac_wait_ack(struct pmac_stream *rec)  in snd_pmac_wait_ack()  argument
165 	while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0)  in snd_pmac_wait_ack()
185 static inline void snd_pmac_dma_stop(struct pmac_stream *rec)  in snd_pmac_dma_stop()  argument
187 	out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16);  in snd_pmac_dma_stop()
188 	snd_pmac_wait_ack(rec);  in snd_pmac_dma_stop()
194 static inline void snd_pmac_dma_set_command(struct pmac_stream *rec, struct pmac_dbdma *cmd)  in snd_pmac_dma_set_command()  argument
196 	out_le32(&rec->dma->cmdptr, cmd->addr);  in snd_pmac_dma_set_command()
202 static inline void snd_pmac_dma_run(struct pmac_stream *rec, int status)  in snd_pmac_dma_run()  argument
204 	out_le32(&rec->dma->control, status | (status << 16));  in snd_pmac_dma_run()
211 static int snd_pmac_pcm_prepare(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_subs…  in snd_pmac_pcm_prepare()  argument
220 	rec->dma_size = snd_pcm_lib_buffer_bytes(subs);  in snd_pmac_pcm_prepare()
221 	rec->period_size = snd_pcm_lib_period_bytes(subs);  in snd_pmac_pcm_prepare()
222 	rec->nperiods = rec->dma_size / rec->period_size;  in snd_pmac_pcm_prepare()
223 	rec->cur_period = 0;  in snd_pmac_pcm_prepare()
224 	rate_index = snd_pmac_rate_index(chip, rec, runtime->rate);  in snd_pmac_pcm_prepare()
227 	astr = snd_pmac_get_stream(chip, another_stream(rec->stream));  in snd_pmac_pcm_prepare()
242 	snd_pmac_dma_stop(rec);  in snd_pmac_pcm_prepare()
244 	snd_pmac_dma_set_command(rec, &chip->extra_dma);  in snd_pmac_pcm_prepare()
245 	snd_pmac_dma_run(rec, RUN);  in snd_pmac_pcm_prepare()
253 	for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {  in snd_pmac_pcm_prepare()
255 		cp->req_count = cpu_to_le16(rec->period_size);  in snd_pmac_pcm_prepare()
258 		offset += rec->period_size;  in snd_pmac_pcm_prepare()
262 	cp->cmd_dep = cpu_to_le32(rec->cmd.addr);  in snd_pmac_pcm_prepare()
264 	snd_pmac_dma_stop(rec);  in snd_pmac_pcm_prepare()
265 	snd_pmac_dma_set_command(rec, &rec->cmd);  in snd_pmac_pcm_prepare()
275 static int snd_pmac_pcm_trigger(struct snd_pmac *chip, struct pmac_stream *rec,  in snd_pmac_pcm_trigger()  argument
284 		if (rec->running)  in snd_pmac_pcm_trigger()
291 		for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)  in snd_pmac_pcm_trigger()
293 		snd_pmac_dma_set_command(rec, &rec->cmd);  in snd_pmac_pcm_trigger()
294 		(void)in_le32(&rec->dma->status);  in snd_pmac_pcm_trigger()
295 		snd_pmac_dma_run(rec, RUN|WAKE);  in snd_pmac_pcm_trigger()
296 		rec->running = 1;  in snd_pmac_pcm_trigger()
303 		rec->running = 0;  in snd_pmac_pcm_trigger()
305 		snd_pmac_dma_stop(rec);  in snd_pmac_pcm_trigger()
306 		for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++)  in snd_pmac_pcm_trigger()
323 					      struct pmac_stream *rec,  in snd_pmac_pcm_pointer()  argument
330 	volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period];  in snd_pmac_pcm_pointer()
335 			count = rec->period_size - count;  in snd_pmac_pcm_pointer()
338 	count += rec->cur_period * rec->period_size;  in snd_pmac_pcm_pointer()
413 static inline void snd_pmac_pcm_dead_xfer(struct pmac_stream *rec,  in snd_pmac_pcm_dead_xfer()  argument
423 	(void)in_le32(&rec->dma->status);  in snd_pmac_pcm_dead_xfer()
424 	out_le32(&rec->dma->control, (RUN|PAUSE|FLUSH|WAKE) << 16);  in snd_pmac_pcm_dead_xfer()
431 		cp->req_count = cpu_to_le16(rec->period_size);  in snd_pmac_pcm_dead_xfer()
446 	cp->cmd_dep = cpu_to_le32(rec->cmd.addr  in snd_pmac_pcm_dead_xfer()
447 		+ sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods));  in snd_pmac_pcm_dead_xfer()
452 	out_le32(&rec->dma->cmdptr, emergency_dbdma.addr);  in snd_pmac_pcm_dead_xfer()
455 	(void)in_le32(&rec->dma->status);  in snd_pmac_pcm_dead_xfer()
457 	out_le32(&rec->dma->control, ((RUN|WAKE) << 16) + (RUN|WAKE));  in snd_pmac_pcm_dead_xfer()
463 static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec)  in snd_pmac_pcm_update()  argument
470 	if (rec->running) {  in snd_pmac_pcm_update()
471 		for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */  in snd_pmac_pcm_update()
476 				cp = &rec->cmd.cmds[rec->cur_period];  in snd_pmac_pcm_update()
481 				snd_pmac_pcm_dead_xfer(rec, cp);  in snd_pmac_pcm_update()
493 			cp->req_count = cpu_to_le16(rec->period_size);  in snd_pmac_pcm_update()
495 			rec->cur_period++;  in snd_pmac_pcm_update()
496 			if (rec->cur_period >= rec->nperiods) {  in snd_pmac_pcm_update()
497 				rec->cur_period = 0;  in snd_pmac_pcm_update()
501 			snd_pcm_period_elapsed(rec->substream);  in snd_pmac_pcm_update()
557 	struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
560 	if (! rec)
564 		if (rec->cur_freqs & (1 << i))
576 	struct pmac_stream *rec = snd_pmac_get_stream(chip, rule->deps[0]);
578 	if (! rec)
581 				   rec->cur_formats);
585 static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec,  in snd_pmac_pcm_open()  argument
617 	runtime->private_data = rec;  in snd_pmac_pcm_open()
618 	rec->substream = subs;  in snd_pmac_pcm_open()
622 			    snd_pmac_hw_rule_rate, chip, rec->stream, -1);  in snd_pmac_pcm_open()
624 			    snd_pmac_hw_rule_format, chip, rec->stream, -1);  in snd_pmac_pcm_open()
627 	runtime->hw.periods_max = rec->cmd.size - 1;  in snd_pmac_pcm_open()
634 static int snd_pmac_pcm_close(struct snd_pmac *chip, struct pmac_stream *rec,  in snd_pmac_pcm_close()  argument
639 	snd_pmac_dma_stop(rec);  in snd_pmac_pcm_close()
641 	astr = snd_pmac_get_stream(chip, another_stream(rec->stream));  in snd_pmac_pcm_close()
760 	struct pmac_stream *rec = &chip->playback;  in snd_pmac_beep_dma_start()  local
762 	snd_pmac_dma_stop(rec);  in snd_pmac_beep_dma_start()
772 	snd_pmac_dma_set_command(rec, &chip->extra_dma);  in snd_pmac_beep_dma_start()
773 	snd_pmac_dma_run(rec, RUN);  in snd_pmac_beep_dma_start()