Lines Matching refs:channel
192 static void rz_dmac_ch_writel(struct rz_dmac_chan *channel, unsigned int val, in rz_dmac_ch_writel() argument
196 writel(val, channel->ch_base + offset); in rz_dmac_ch_writel()
198 writel(val, channel->ch_cmn_base + offset); in rz_dmac_ch_writel()
201 static u32 rz_dmac_ch_readl(struct rz_dmac_chan *channel, in rz_dmac_ch_readl() argument
205 return readl(channel->ch_base + offset); in rz_dmac_ch_readl()
207 return readl(channel->ch_cmn_base + offset); in rz_dmac_ch_readl()
215 static void rz_lmdesc_setup(struct rz_dmac_chan *channel, in rz_lmdesc_setup() argument
220 channel->lmdesc.base = lmdesc; in rz_lmdesc_setup()
221 channel->lmdesc.head = lmdesc; in rz_lmdesc_setup()
222 channel->lmdesc.tail = lmdesc; in rz_lmdesc_setup()
223 nxla = channel->lmdesc.base_dma; in rz_lmdesc_setup()
224 while (lmdesc < (channel->lmdesc.base + (DMAC_NR_LMDESC - 1))) { in rz_lmdesc_setup()
232 lmdesc->nxla = channel->lmdesc.base_dma; in rz_lmdesc_setup()
240 static void rz_dmac_lmdesc_recycle(struct rz_dmac_chan *channel) in rz_dmac_lmdesc_recycle() argument
242 struct rz_lmdesc *lmdesc = channel->lmdesc.head; in rz_dmac_lmdesc_recycle()
247 if (lmdesc >= (channel->lmdesc.base + DMAC_NR_LMDESC)) in rz_dmac_lmdesc_recycle()
248 lmdesc = channel->lmdesc.base; in rz_dmac_lmdesc_recycle()
250 channel->lmdesc.head = lmdesc; in rz_dmac_lmdesc_recycle()
253 static void rz_dmac_enable_hw(struct rz_dmac_chan *channel) in rz_dmac_enable_hw() argument
255 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_enable_hw()
262 dev_dbg(dmac->dev, "%s channel %d\n", __func__, channel->index); in rz_dmac_enable_hw()
266 rz_dmac_lmdesc_recycle(channel); in rz_dmac_enable_hw()
268 nxla = channel->lmdesc.base_dma + in rz_dmac_enable_hw()
269 (sizeof(struct rz_lmdesc) * (channel->lmdesc.head - in rz_dmac_enable_hw()
270 channel->lmdesc.base)); in rz_dmac_enable_hw()
272 chstat = rz_dmac_ch_readl(channel, CHSTAT, 1); in rz_dmac_enable_hw()
274 chctrl = (channel->chctrl | CHCTRL_SETEN); in rz_dmac_enable_hw()
275 rz_dmac_ch_writel(channel, nxla, NXLA, 1); in rz_dmac_enable_hw()
276 rz_dmac_ch_writel(channel, channel->chcfg, CHCFG, 1); in rz_dmac_enable_hw()
277 rz_dmac_ch_writel(channel, CHCTRL_SWRST, CHCTRL, 1); in rz_dmac_enable_hw()
278 rz_dmac_ch_writel(channel, chctrl, CHCTRL, 1); in rz_dmac_enable_hw()
284 static void rz_dmac_disable_hw(struct rz_dmac_chan *channel) in rz_dmac_disable_hw() argument
286 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_disable_hw()
290 dev_dbg(dmac->dev, "%s channel %d\n", __func__, channel->index); in rz_dmac_disable_hw()
293 rz_dmac_ch_writel(channel, CHCTRL_DEFAULT, CHCTRL, 1); in rz_dmac_disable_hw()
310 static void rz_dmac_prepare_desc_for_memcpy(struct rz_dmac_chan *channel) in rz_dmac_prepare_desc_for_memcpy() argument
312 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_prepare_desc_for_memcpy()
314 struct rz_lmdesc *lmdesc = channel->lmdesc.tail; in rz_dmac_prepare_desc_for_memcpy()
315 struct rz_dmac_desc *d = channel->desc; in rz_dmac_prepare_desc_for_memcpy()
327 rz_dmac_set_dmars_register(dmac, channel->index, 0); in rz_dmac_prepare_desc_for_memcpy()
329 channel->chcfg = chcfg; in rz_dmac_prepare_desc_for_memcpy()
330 channel->chctrl = CHCTRL_STG | CHCTRL_SETEN; in rz_dmac_prepare_desc_for_memcpy()
333 static void rz_dmac_prepare_descs_for_slave_sg(struct rz_dmac_chan *channel) in rz_dmac_prepare_descs_for_slave_sg() argument
335 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_prepare_descs_for_slave_sg()
337 struct rz_dmac_desc *d = channel->desc; in rz_dmac_prepare_descs_for_slave_sg()
342 channel->chcfg |= CHCFG_SEL(channel->index) | CHCFG_DEM | CHCFG_DMS; in rz_dmac_prepare_descs_for_slave_sg()
345 channel->chcfg |= CHCFG_SAD; in rz_dmac_prepare_descs_for_slave_sg()
346 channel->chcfg &= ~CHCFG_REQD; in rz_dmac_prepare_descs_for_slave_sg()
348 channel->chcfg |= CHCFG_DAD | CHCFG_REQD; in rz_dmac_prepare_descs_for_slave_sg()
351 lmdesc = channel->lmdesc.tail; in rz_dmac_prepare_descs_for_slave_sg()
355 lmdesc->sa = channel->src_per_address; in rz_dmac_prepare_descs_for_slave_sg()
359 lmdesc->da = channel->dst_per_address; in rz_dmac_prepare_descs_for_slave_sg()
366 lmdesc->chcfg = (channel->chcfg & ~CHCFG_DEM); in rz_dmac_prepare_descs_for_slave_sg()
369 lmdesc->chcfg = channel->chcfg; in rz_dmac_prepare_descs_for_slave_sg()
372 if (++lmdesc >= (channel->lmdesc.base + DMAC_NR_LMDESC)) in rz_dmac_prepare_descs_for_slave_sg()
373 lmdesc = channel->lmdesc.base; in rz_dmac_prepare_descs_for_slave_sg()
376 channel->lmdesc.tail = lmdesc; in rz_dmac_prepare_descs_for_slave_sg()
378 rz_dmac_set_dmars_register(dmac, channel->index, channel->mid_rid); in rz_dmac_prepare_descs_for_slave_sg()
379 channel->chctrl = CHCTRL_SETEN; in rz_dmac_prepare_descs_for_slave_sg()
418 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_alloc_chan_resources() local
420 while (channel->descs_allocated < RZ_DMAC_MAX_CHAN_DESCRIPTORS) { in rz_dmac_alloc_chan_resources()
427 list_add_tail(&desc->node, &channel->ld_free); in rz_dmac_alloc_chan_resources()
428 channel->descs_allocated++; in rz_dmac_alloc_chan_resources()
431 if (!channel->descs_allocated) in rz_dmac_alloc_chan_resources()
434 return channel->descs_allocated; in rz_dmac_alloc_chan_resources()
439 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_free_chan_resources() local
441 struct rz_lmdesc *lmdesc = channel->lmdesc.base; in rz_dmac_free_chan_resources()
446 spin_lock_irqsave(&channel->vc.lock, flags); in rz_dmac_free_chan_resources()
451 rz_dmac_disable_hw(channel); in rz_dmac_free_chan_resources()
452 list_splice_tail_init(&channel->ld_active, &channel->ld_free); in rz_dmac_free_chan_resources()
453 list_splice_tail_init(&channel->ld_queue, &channel->ld_free); in rz_dmac_free_chan_resources()
455 if (channel->mid_rid >= 0) { in rz_dmac_free_chan_resources()
456 clear_bit(channel->mid_rid, dmac->modules); in rz_dmac_free_chan_resources()
457 channel->mid_rid = -EINVAL; in rz_dmac_free_chan_resources()
460 spin_unlock_irqrestore(&channel->vc.lock, flags); in rz_dmac_free_chan_resources()
462 list_for_each_entry_safe(desc, _desc, &channel->ld_free, node) { in rz_dmac_free_chan_resources()
464 channel->descs_allocated--; in rz_dmac_free_chan_resources()
467 INIT_LIST_HEAD(&channel->ld_free); in rz_dmac_free_chan_resources()
468 vchan_free_chan_resources(&channel->vc); in rz_dmac_free_chan_resources()
475 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_prep_dma_memcpy() local
480 __func__, channel->index, &src, &dest, len); in rz_dmac_prep_dma_memcpy()
482 if (list_empty(&channel->ld_free)) in rz_dmac_prep_dma_memcpy()
485 desc = list_first_entry(&channel->ld_free, struct rz_dmac_desc, node); in rz_dmac_prep_dma_memcpy()
493 list_move_tail(channel->ld_free.next, &channel->ld_queue); in rz_dmac_prep_dma_memcpy()
494 return vchan_tx_prep(&channel->vc, &desc->vd, flags); in rz_dmac_prep_dma_memcpy()
503 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_prep_slave_sg() local
509 if (list_empty(&channel->ld_free)) in rz_dmac_prep_slave_sg()
512 desc = list_first_entry(&channel->ld_free, struct rz_dmac_desc, node); in rz_dmac_prep_slave_sg()
525 desc->src = channel->src_per_address; in rz_dmac_prep_slave_sg()
527 desc->dest = channel->dst_per_address; in rz_dmac_prep_slave_sg()
529 list_move_tail(channel->ld_free.next, &channel->ld_queue); in rz_dmac_prep_slave_sg()
530 return vchan_tx_prep(&channel->vc, &desc->vd, flags); in rz_dmac_prep_slave_sg()
535 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_terminate_all() local
539 rz_dmac_disable_hw(channel); in rz_dmac_terminate_all()
540 spin_lock_irqsave(&channel->vc.lock, flags); in rz_dmac_terminate_all()
541 list_splice_tail_init(&channel->ld_active, &channel->ld_free); in rz_dmac_terminate_all()
542 list_splice_tail_init(&channel->ld_queue, &channel->ld_free); in rz_dmac_terminate_all()
543 spin_unlock_irqrestore(&channel->vc.lock, flags); in rz_dmac_terminate_all()
544 vchan_get_all_descriptors(&channel->vc, &head); in rz_dmac_terminate_all()
545 vchan_dma_desc_free_list(&channel->vc, &head); in rz_dmac_terminate_all()
552 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_issue_pending() local
557 spin_lock_irqsave(&channel->vc.lock, flags); in rz_dmac_issue_pending()
559 if (!list_empty(&channel->ld_queue)) { in rz_dmac_issue_pending()
560 desc = list_first_entry(&channel->ld_queue, in rz_dmac_issue_pending()
562 channel->desc = desc; in rz_dmac_issue_pending()
563 if (vchan_issue_pending(&channel->vc)) { in rz_dmac_issue_pending()
564 if (rz_dmac_xfer_desc(channel) < 0) in rz_dmac_issue_pending()
566 channel->index); in rz_dmac_issue_pending()
568 list_move_tail(channel->ld_queue.next, in rz_dmac_issue_pending()
569 &channel->ld_active); in rz_dmac_issue_pending()
573 spin_unlock_irqrestore(&channel->vc.lock, flags); in rz_dmac_issue_pending()
601 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_config() local
604 channel->src_per_address = config->src_addr; in rz_dmac_config()
605 channel->dst_per_address = config->dst_addr; in rz_dmac_config()
611 channel->chcfg &= ~CHCFG_FILL_DDS_MASK; in rz_dmac_config()
612 channel->chcfg |= FIELD_PREP(CHCFG_FILL_DDS_MASK, val); in rz_dmac_config()
618 channel->chcfg &= ~CHCFG_FILL_SDS_MASK; in rz_dmac_config()
619 channel->chcfg |= FIELD_PREP(CHCFG_FILL_SDS_MASK, val); in rz_dmac_config()
637 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_device_synchronize() local
643 100, 100000, false, channel, CHSTAT, 1); in rz_dmac_device_synchronize()
647 rz_dmac_set_dmars_register(dmac, channel->index, 0); in rz_dmac_device_synchronize()
655 static void rz_dmac_irq_handle_channel(struct rz_dmac_chan *channel) in rz_dmac_irq_handle_channel() argument
657 struct dma_chan *chan = &channel->vc.chan; in rz_dmac_irq_handle_channel()
661 chstat = rz_dmac_ch_readl(channel, CHSTAT, 1); in rz_dmac_irq_handle_channel()
664 channel->index, chstat); in rz_dmac_irq_handle_channel()
665 rz_dmac_ch_writel(channel, CHCTRL_DEFAULT, CHCTRL, 1); in rz_dmac_irq_handle_channel()
669 chctrl = rz_dmac_ch_readl(channel, CHCTRL, 1); in rz_dmac_irq_handle_channel()
670 rz_dmac_ch_writel(channel, chctrl | CHCTRL_CLREND, CHCTRL, 1); in rz_dmac_irq_handle_channel()
677 struct rz_dmac_chan *channel = dev_id; in rz_dmac_irq_handler() local
679 if (channel) { in rz_dmac_irq_handler()
680 rz_dmac_irq_handle_channel(channel); in rz_dmac_irq_handler()
689 struct rz_dmac_chan *channel = dev_id; in rz_dmac_irq_handler_thread() local
693 spin_lock_irqsave(&channel->vc.lock, flags); in rz_dmac_irq_handler_thread()
695 if (list_empty(&channel->ld_active)) { in rz_dmac_irq_handler_thread()
700 desc = list_first_entry(&channel->ld_active, struct rz_dmac_desc, node); in rz_dmac_irq_handler_thread()
702 list_move_tail(channel->ld_active.next, &channel->ld_free); in rz_dmac_irq_handler_thread()
703 if (!list_empty(&channel->ld_queue)) { in rz_dmac_irq_handler_thread()
704 desc = list_first_entry(&channel->ld_queue, struct rz_dmac_desc, in rz_dmac_irq_handler_thread()
706 channel->desc = desc; in rz_dmac_irq_handler_thread()
707 if (rz_dmac_xfer_desc(channel) == 0) in rz_dmac_irq_handler_thread()
708 list_move_tail(channel->ld_queue.next, &channel->ld_active); in rz_dmac_irq_handler_thread()
711 spin_unlock_irqrestore(&channel->vc.lock, flags); in rz_dmac_irq_handler_thread()
723 struct rz_dmac_chan *channel = to_rz_dmac_chan(chan); in rz_dmac_chan_filter() local
728 channel->mid_rid = dma_spec->args[0] & MID_RID_MASK; in rz_dmac_chan_filter()
730 channel->chcfg = CHCFG_FILL_TM(ch_cfg) | CHCFG_FILL_AM(ch_cfg) | in rz_dmac_chan_filter()
733 return !test_and_set_bit(channel->mid_rid, dmac->modules); in rz_dmac_chan_filter()
757 struct rz_dmac_chan *channel, in rz_dmac_chan_probe() argument
766 channel->index = index; in rz_dmac_chan_probe()
767 channel->mid_rid = -EINVAL; in rz_dmac_chan_probe()
771 channel->irq = platform_get_irq_byname(pdev, pdev_irqname); in rz_dmac_chan_probe()
772 if (channel->irq < 0) in rz_dmac_chan_probe()
773 return channel->irq; in rz_dmac_chan_probe()
780 ret = devm_request_threaded_irq(dmac->dev, channel->irq, in rz_dmac_chan_probe()
783 irqname, channel); in rz_dmac_chan_probe()
786 channel->irq, ret); in rz_dmac_chan_probe()
792 channel->ch_base = dmac->base + CHANNEL_0_7_OFFSET + in rz_dmac_chan_probe()
794 channel->ch_cmn_base = dmac->base + CHANNEL_0_7_COMMON_BASE; in rz_dmac_chan_probe()
796 channel->ch_base = dmac->base + CHANNEL_8_15_OFFSET + in rz_dmac_chan_probe()
798 channel->ch_cmn_base = dmac->base + CHANNEL_8_15_COMMON_BASE; in rz_dmac_chan_probe()
804 &channel->lmdesc.base_dma, GFP_KERNEL); in rz_dmac_chan_probe()
809 rz_lmdesc_setup(channel, lmdesc); in rz_dmac_chan_probe()
812 rz_dmac_ch_writel(channel, CHCTRL_DEFAULT, CHCTRL, 1); in rz_dmac_chan_probe()
814 channel->vc.desc_free = rz_dmac_virt_desc_free; in rz_dmac_chan_probe()
815 vchan_init(&channel->vc, &dmac->engine); in rz_dmac_chan_probe()
816 INIT_LIST_HEAD(&channel->ld_queue); in rz_dmac_chan_probe()
817 INIT_LIST_HEAD(&channel->ld_free); in rz_dmac_chan_probe()
818 INIT_LIST_HEAD(&channel->ld_active); in rz_dmac_chan_probe()
955 struct rz_dmac_chan *channel = &dmac->channels[i]; in rz_dmac_probe() local
959 channel->lmdesc.base, in rz_dmac_probe()
960 channel->lmdesc.base_dma); in rz_dmac_probe()
980 struct rz_dmac_chan *channel = &dmac->channels[i]; in rz_dmac_remove() local
984 channel->lmdesc.base, in rz_dmac_remove()
985 channel->lmdesc.base_dma); in rz_dmac_remove()