Lines Matching refs:channel
190 static void rz_dmac_ch_writel(struct rz_dmac_chan *channel, unsigned int val, in rz_dmac_ch_writel() argument
194 writel(val, channel->ch_base + offset); in rz_dmac_ch_writel()
196 writel(val, channel->ch_cmn_base + offset); in rz_dmac_ch_writel()
199 static u32 rz_dmac_ch_readl(struct rz_dmac_chan *channel, in rz_dmac_ch_readl() argument
203 return readl(channel->ch_base + offset); in rz_dmac_ch_readl()
205 return readl(channel->ch_cmn_base + offset); in rz_dmac_ch_readl()
213 static void rz_lmdesc_setup(struct rz_dmac_chan *channel, in rz_lmdesc_setup() argument
218 channel->lmdesc.base = lmdesc; in rz_lmdesc_setup()
219 channel->lmdesc.head = lmdesc; in rz_lmdesc_setup()
220 channel->lmdesc.tail = lmdesc; in rz_lmdesc_setup()
221 nxla = channel->lmdesc.base_dma; in rz_lmdesc_setup()
222 while (lmdesc < (channel->lmdesc.base + (DMAC_NR_LMDESC - 1))) { in rz_lmdesc_setup()
230 lmdesc->nxla = channel->lmdesc.base_dma; in rz_lmdesc_setup()
238 static void rz_dmac_lmdesc_recycle(struct rz_dmac_chan *channel) in rz_dmac_lmdesc_recycle() argument
240 struct rz_lmdesc *lmdesc = channel->lmdesc.head; in rz_dmac_lmdesc_recycle()
245 if (lmdesc >= (channel->lmdesc.base + DMAC_NR_LMDESC)) in rz_dmac_lmdesc_recycle()
246 lmdesc = channel->lmdesc.base; in rz_dmac_lmdesc_recycle()
248 channel->lmdesc.head = lmdesc; in rz_dmac_lmdesc_recycle()
251 static void rz_dmac_enable_hw(struct rz_dmac_chan *channel) in rz_dmac_enable_hw() argument
253 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_enable_hw()
260 dev_dbg(dmac->dev, "%s channel %d\n", __func__, channel->index); in rz_dmac_enable_hw()
264 rz_dmac_lmdesc_recycle(channel); in rz_dmac_enable_hw()
266 nxla = channel->lmdesc.base_dma + in rz_dmac_enable_hw()
267 (sizeof(struct rz_lmdesc) * (channel->lmdesc.head - in rz_dmac_enable_hw()
268 channel->lmdesc.base)); in rz_dmac_enable_hw()
270 chstat = rz_dmac_ch_readl(channel, CHSTAT, 1); in rz_dmac_enable_hw()
272 chctrl = (channel->chctrl | CHCTRL_SETEN); in rz_dmac_enable_hw()
273 rz_dmac_ch_writel(channel, nxla, NXLA, 1); in rz_dmac_enable_hw()
274 rz_dmac_ch_writel(channel, channel->chcfg, CHCFG, 1); in rz_dmac_enable_hw()
275 rz_dmac_ch_writel(channel, CHCTRL_SWRST, CHCTRL, 1); in rz_dmac_enable_hw()
276 rz_dmac_ch_writel(channel, chctrl, CHCTRL, 1); in rz_dmac_enable_hw()
282 static void rz_dmac_disable_hw(struct rz_dmac_chan *channel) in rz_dmac_disable_hw() argument
284 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_disable_hw()
288 dev_dbg(dmac->dev, "%s channel %d\n", __func__, channel->index); in rz_dmac_disable_hw()
291 rz_dmac_ch_writel(channel, CHCTRL_DEFAULT, CHCTRL, 1); in rz_dmac_disable_hw()
308 static void rz_dmac_prepare_desc_for_memcpy(struct rz_dmac_chan *channel) in rz_dmac_prepare_desc_for_memcpy() argument
310 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_prepare_desc_for_memcpy()
312 struct rz_lmdesc *lmdesc = channel->lmdesc.tail; in rz_dmac_prepare_desc_for_memcpy()
313 struct rz_dmac_desc *d = channel->desc; in rz_dmac_prepare_desc_for_memcpy()
325 rz_dmac_set_dmars_register(dmac, channel->index, 0); in rz_dmac_prepare_desc_for_memcpy()
327 channel->chcfg = chcfg; in rz_dmac_prepare_desc_for_memcpy()
328 channel->chctrl = CHCTRL_STG | CHCTRL_SETEN; in rz_dmac_prepare_desc_for_memcpy()
331 static void rz_dmac_prepare_descs_for_slave_sg(struct rz_dmac_chan *channel) in rz_dmac_prepare_descs_for_slave_sg() argument
333 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_prepare_descs_for_slave_sg()
335 struct rz_dmac_desc *d = channel->desc; in rz_dmac_prepare_descs_for_slave_sg()
340 channel->chcfg |= CHCFG_SEL(channel->index) | CHCFG_DEM | CHCFG_DMS; in rz_dmac_prepare_descs_for_slave_sg()
343 channel->chcfg |= CHCFG_SAD; in rz_dmac_prepare_descs_for_slave_sg()
344 channel->chcfg &= ~CHCFG_REQD; in rz_dmac_prepare_descs_for_slave_sg()
346 channel->chcfg |= CHCFG_DAD | CHCFG_REQD; in rz_dmac_prepare_descs_for_slave_sg()
349 lmdesc = channel->lmdesc.tail; in rz_dmac_prepare_descs_for_slave_sg()
353 lmdesc->sa = channel->src_per_address; in rz_dmac_prepare_descs_for_slave_sg()
357 lmdesc->da = channel->dst_per_address; in rz_dmac_prepare_descs_for_slave_sg()
364 lmdesc->chcfg = (channel->chcfg & ~CHCFG_DEM); in rz_dmac_prepare_descs_for_slave_sg()
367 lmdesc->chcfg = channel->chcfg; in rz_dmac_prepare_descs_for_slave_sg()
370 if (++lmdesc >= (channel->lmdesc.base + DMAC_NR_LMDESC)) in rz_dmac_prepare_descs_for_slave_sg()
371 lmdesc = channel->lmdesc.base; in rz_dmac_prepare_descs_for_slave_sg()
374 channel->lmdesc.tail = lmdesc; in rz_dmac_prepare_descs_for_slave_sg()
376 rz_dmac_set_dmars_register(dmac, channel->index, channel->mid_rid); in rz_dmac_prepare_descs_for_slave_sg()
377 channel->chctrl = CHCTRL_SETEN; in rz_dmac_prepare_descs_for_slave_sg()
416 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_alloc_chan_resources() local
418 while (channel->descs_allocated < RZ_DMAC_MAX_CHAN_DESCRIPTORS) { in rz_dmac_alloc_chan_resources()
425 list_add_tail(&desc->node, &channel->ld_free); in rz_dmac_alloc_chan_resources()
426 channel->descs_allocated++; in rz_dmac_alloc_chan_resources()
429 if (!channel->descs_allocated) in rz_dmac_alloc_chan_resources()
432 return channel->descs_allocated; in rz_dmac_alloc_chan_resources()
437 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_free_chan_resources() local
439 struct rz_lmdesc *lmdesc = channel->lmdesc.base; in rz_dmac_free_chan_resources()
444 spin_lock_irqsave(&channel->vc.lock, flags); in rz_dmac_free_chan_resources()
449 rz_dmac_disable_hw(channel); in rz_dmac_free_chan_resources()
450 list_splice_tail_init(&channel->ld_active, &channel->ld_free); in rz_dmac_free_chan_resources()
451 list_splice_tail_init(&channel->ld_queue, &channel->ld_free); in rz_dmac_free_chan_resources()
453 if (channel->mid_rid >= 0) { in rz_dmac_free_chan_resources()
454 clear_bit(channel->mid_rid, dmac->modules); in rz_dmac_free_chan_resources()
455 channel->mid_rid = -EINVAL; in rz_dmac_free_chan_resources()
458 spin_unlock_irqrestore(&channel->vc.lock, flags); in rz_dmac_free_chan_resources()
460 list_for_each_entry_safe(desc, _desc, &channel->ld_free, node) { in rz_dmac_free_chan_resources()
462 channel->descs_allocated--; in rz_dmac_free_chan_resources()
465 INIT_LIST_HEAD(&channel->ld_free); in rz_dmac_free_chan_resources()
466 vchan_free_chan_resources(&channel->vc); in rz_dmac_free_chan_resources()
473 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_prep_dma_memcpy() local
478 __func__, channel->index, &src, &dest, len); in rz_dmac_prep_dma_memcpy()
480 if (list_empty(&channel->ld_free)) in rz_dmac_prep_dma_memcpy()
483 desc = list_first_entry(&channel->ld_free, struct rz_dmac_desc, node); in rz_dmac_prep_dma_memcpy()
491 list_move_tail(channel->ld_free.next, &channel->ld_queue); in rz_dmac_prep_dma_memcpy()
492 return vchan_tx_prep(&channel->vc, &desc->vd, flags); in rz_dmac_prep_dma_memcpy()
501 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_prep_slave_sg() local
507 if (list_empty(&channel->ld_free)) in rz_dmac_prep_slave_sg()
510 desc = list_first_entry(&channel->ld_free, struct rz_dmac_desc, node); in rz_dmac_prep_slave_sg()
523 desc->src = channel->src_per_address; in rz_dmac_prep_slave_sg()
525 desc->dest = channel->dst_per_address; in rz_dmac_prep_slave_sg()
527 list_move_tail(channel->ld_free.next, &channel->ld_queue); in rz_dmac_prep_slave_sg()
528 return vchan_tx_prep(&channel->vc, &desc->vd, flags); in rz_dmac_prep_slave_sg()
533 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_terminate_all() local
537 rz_dmac_disable_hw(channel); in rz_dmac_terminate_all()
538 spin_lock_irqsave(&channel->vc.lock, flags); in rz_dmac_terminate_all()
539 list_splice_tail_init(&channel->ld_active, &channel->ld_free); in rz_dmac_terminate_all()
540 list_splice_tail_init(&channel->ld_queue, &channel->ld_free); in rz_dmac_terminate_all()
541 spin_unlock_irqrestore(&channel->vc.lock, flags); in rz_dmac_terminate_all()
542 vchan_get_all_descriptors(&channel->vc, &head); in rz_dmac_terminate_all()
543 vchan_dma_desc_free_list(&channel->vc, &head); in rz_dmac_terminate_all()
550 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_issue_pending() local
555 spin_lock_irqsave(&channel->vc.lock, flags); in rz_dmac_issue_pending()
557 if (!list_empty(&channel->ld_queue)) { in rz_dmac_issue_pending()
558 desc = list_first_entry(&channel->ld_queue, in rz_dmac_issue_pending()
560 channel->desc = desc; in rz_dmac_issue_pending()
561 if (vchan_issue_pending(&channel->vc)) { in rz_dmac_issue_pending()
562 if (rz_dmac_xfer_desc(channel) < 0) in rz_dmac_issue_pending()
564 channel->index); in rz_dmac_issue_pending()
566 list_move_tail(channel->ld_queue.next, in rz_dmac_issue_pending()
567 &channel->ld_active); in rz_dmac_issue_pending()
571 spin_unlock_irqrestore(&channel->vc.lock, flags); in rz_dmac_issue_pending()
599 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_config() local
602 channel->src_per_address = config->src_addr; in rz_dmac_config()
603 channel->src_word_size = config->src_addr_width; in rz_dmac_config()
604 channel->dst_per_address = config->dst_addr; in rz_dmac_config()
605 channel->dst_word_size = config->dst_addr_width; in rz_dmac_config()
611 channel->chcfg |= CHCFG_FILL_DDS(val); in rz_dmac_config()
617 channel->chcfg |= CHCFG_FILL_SDS(val); in rz_dmac_config()
638 static void rz_dmac_irq_handle_channel(struct rz_dmac_chan *channel) in rz_dmac_irq_handle_channel() argument
640 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_irq_handle_channel()
644 chstat = rz_dmac_ch_readl(channel, CHSTAT, 1); in rz_dmac_irq_handle_channel()
647 channel->index, chstat); in rz_dmac_irq_handle_channel()
648 rz_dmac_ch_writel(channel, CHCTRL_DEFAULT, CHCTRL, 1); in rz_dmac_irq_handle_channel()
652 chctrl = rz_dmac_ch_readl(channel, CHCTRL, 1); in rz_dmac_irq_handle_channel()
653 rz_dmac_ch_writel(channel, chctrl | CHCTRL_CLREND, CHCTRL, 1); in rz_dmac_irq_handle_channel()
660 struct rz_dmac_chan *channel = dev_id; in rz_dmac_irq_handler() local
662 if (channel) { in rz_dmac_irq_handler()
663 rz_dmac_irq_handle_channel(channel); in rz_dmac_irq_handler()
672 struct rz_dmac_chan *channel = dev_id; in rz_dmac_irq_handler_thread() local
676 spin_lock_irqsave(&channel->vc.lock, flags); in rz_dmac_irq_handler_thread()
678 if (list_empty(&channel->ld_active)) { in rz_dmac_irq_handler_thread()
683 desc = list_first_entry(&channel->ld_active, struct rz_dmac_desc, node); in rz_dmac_irq_handler_thread()
685 list_move_tail(channel->ld_active.next, &channel->ld_free); in rz_dmac_irq_handler_thread()
686 if (!list_empty(&channel->ld_queue)) { in rz_dmac_irq_handler_thread()
687 desc = list_first_entry(&channel->ld_queue, struct rz_dmac_desc, in rz_dmac_irq_handler_thread()
689 channel->desc = desc; in rz_dmac_irq_handler_thread()
690 if (rz_dmac_xfer_desc(channel) == 0) in rz_dmac_irq_handler_thread()
691 list_move_tail(channel->ld_queue.next, &channel->ld_active); in rz_dmac_irq_handler_thread()
694 spin_unlock_irqrestore(&channel->vc.lock, flags); in rz_dmac_irq_handler_thread()
706 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_chan_filter() local
711 channel->mid_rid = dma_spec->args[0] & MID_RID_MASK; in rz_dmac_chan_filter()
713 channel->chcfg = CHCFG_FILL_TM(ch_cfg) | CHCFG_FILL_AM(ch_cfg) | in rz_dmac_chan_filter()
716 return !test_and_set_bit(channel->mid_rid, dmac->modules); in rz_dmac_chan_filter()
740 struct rz_dmac_chan *channel, in rz_dmac_chan_probe() argument
749 channel->index = index; in rz_dmac_chan_probe()
750 channel->mid_rid = -EINVAL; in rz_dmac_chan_probe()
754 channel->irq = platform_get_irq_byname(pdev, pdev_irqname); in rz_dmac_chan_probe()
755 if (channel->irq < 0) in rz_dmac_chan_probe()
756 return channel->irq; in rz_dmac_chan_probe()
763 ret = devm_request_threaded_irq(dmac->dev, channel->irq, in rz_dmac_chan_probe()
766 irqname, channel); in rz_dmac_chan_probe()
769 channel->irq, ret); in rz_dmac_chan_probe()
775 channel->ch_base = dmac->base + CHANNEL_0_7_OFFSET + in rz_dmac_chan_probe()
777 channel->ch_cmn_base = dmac->base + CHANNEL_0_7_COMMON_BASE; in rz_dmac_chan_probe()
779 channel->ch_base = dmac->base + CHANNEL_8_15_OFFSET + in rz_dmac_chan_probe()
781 channel->ch_cmn_base = dmac->base + CHANNEL_8_15_COMMON_BASE; in rz_dmac_chan_probe()
787 &channel->lmdesc.base_dma, GFP_KERNEL); in rz_dmac_chan_probe()
792 rz_lmdesc_setup(channel, lmdesc); in rz_dmac_chan_probe()
795 rz_dmac_ch_writel(channel, CHCTRL_DEFAULT, CHCTRL, 1); in rz_dmac_chan_probe()
797 channel->vc.desc_free = rz_dmac_virt_desc_free; in rz_dmac_chan_probe()
798 vchan_init(&channel->vc, &dmac->engine); in rz_dmac_chan_probe()
799 INIT_LIST_HEAD(&channel->ld_queue); in rz_dmac_chan_probe()
800 INIT_LIST_HEAD(&channel->ld_free); in rz_dmac_chan_probe()
801 INIT_LIST_HEAD(&channel->ld_active); in rz_dmac_chan_probe()
928 struct rz_dmac_chan *channel = &dmac->channels[i]; in rz_dmac_probe() local
932 channel->lmdesc.base, in rz_dmac_probe()
933 channel->lmdesc.base_dma); in rz_dmac_probe()
949 struct rz_dmac_chan *channel = &dmac->channels[i]; in rz_dmac_remove() local
953 channel->lmdesc.base, in rz_dmac_remove()
954 channel->lmdesc.base_dma); in rz_dmac_remove()