Lines Matching refs:chan
143 #define ZYNQMP_DMA_DESC_SIZE(chan) (chan->desc_size) argument
145 #define to_chan(chan) container_of(chan, struct zynqmp_dma_chan, \ argument
253 struct zynqmp_dma_chan *chan; member
258 static inline void zynqmp_dma_writeq(struct zynqmp_dma_chan *chan, u32 reg, in zynqmp_dma_writeq() argument
261 lo_hi_writeq(value, chan->regs + reg); in zynqmp_dma_writeq()
269 static void zynqmp_dma_update_desc_to_ctrlr(struct zynqmp_dma_chan *chan, in zynqmp_dma_update_desc_to_ctrlr() argument
275 zynqmp_dma_writeq(chan, ZYNQMP_DMA_SRC_START_LSB, addr); in zynqmp_dma_update_desc_to_ctrlr()
277 zynqmp_dma_writeq(chan, ZYNQMP_DMA_DST_START_LSB, addr); in zynqmp_dma_update_desc_to_ctrlr()
285 static void zynqmp_dma_desc_config_eod(struct zynqmp_dma_chan *chan, in zynqmp_dma_desc_config_eod() argument
304 static void zynqmp_dma_config_sg_ll_desc(struct zynqmp_dma_chan *chan, in zynqmp_dma_config_sg_ll_desc() argument
316 if (chan->is_dmacoherent) { in zynqmp_dma_config_sg_ll_desc()
322 dma_addr_t addr = chan->desc_pool_p + in zynqmp_dma_config_sg_ll_desc()
323 ((uintptr_t)sdesc - (uintptr_t)chan->desc_pool_v); in zynqmp_dma_config_sg_ll_desc()
326 ddesc->nxtdscraddr = addr + ZYNQMP_DMA_DESC_SIZE(chan); in zynqmp_dma_config_sg_ll_desc()
334 static void zynqmp_dma_init(struct zynqmp_dma_chan *chan) in zynqmp_dma_init() argument
338 writel(ZYNQMP_DMA_IDS_DEFAULT_MASK, chan->regs + ZYNQMP_DMA_IDS); in zynqmp_dma_init()
339 val = readl(chan->regs + ZYNQMP_DMA_ISR); in zynqmp_dma_init()
340 writel(val, chan->regs + ZYNQMP_DMA_ISR); in zynqmp_dma_init()
342 if (chan->is_dmacoherent) { in zynqmp_dma_init()
346 writel(val, chan->regs + ZYNQMP_DMA_DSCR_ATTR); in zynqmp_dma_init()
349 val = readl(chan->regs + ZYNQMP_DMA_DATA_ATTR); in zynqmp_dma_init()
350 if (chan->is_dmacoherent) { in zynqmp_dma_init()
356 writel(val, chan->regs + ZYNQMP_DMA_DATA_ATTR); in zynqmp_dma_init()
359 val = readl(chan->regs + ZYNQMP_DMA_IRQ_SRC_ACCT); in zynqmp_dma_init()
360 val = readl(chan->regs + ZYNQMP_DMA_IRQ_DST_ACCT); in zynqmp_dma_init()
362 chan->idle = true; in zynqmp_dma_init()
373 struct zynqmp_dma_chan *chan = to_chan(tx->chan); in zynqmp_dma_tx_submit() local
379 spin_lock_irqsave(&chan->lock, irqflags); in zynqmp_dma_tx_submit()
382 if (!list_empty(&chan->pending_list)) { in zynqmp_dma_tx_submit()
383 desc = list_last_entry(&chan->pending_list, in zynqmp_dma_tx_submit()
394 list_add_tail(&new->node, &chan->pending_list); in zynqmp_dma_tx_submit()
395 spin_unlock_irqrestore(&chan->lock, irqflags); in zynqmp_dma_tx_submit()
407 zynqmp_dma_get_descriptor(struct zynqmp_dma_chan *chan) in zynqmp_dma_get_descriptor() argument
412 spin_lock_irqsave(&chan->lock, irqflags); in zynqmp_dma_get_descriptor()
413 desc = list_first_entry(&chan->free_list, in zynqmp_dma_get_descriptor()
416 spin_unlock_irqrestore(&chan->lock, irqflags); in zynqmp_dma_get_descriptor()
420 memset((void *)desc->src_v, 0, ZYNQMP_DMA_DESC_SIZE(chan)); in zynqmp_dma_get_descriptor()
421 memset((void *)desc->dst_v, 0, ZYNQMP_DMA_DESC_SIZE(chan)); in zynqmp_dma_get_descriptor()
431 static void zynqmp_dma_free_descriptor(struct zynqmp_dma_chan *chan, in zynqmp_dma_free_descriptor() argument
436 chan->desc_free_cnt++; in zynqmp_dma_free_descriptor()
438 list_add_tail(&sdesc->node, &chan->free_list); in zynqmp_dma_free_descriptor()
440 chan->desc_free_cnt++; in zynqmp_dma_free_descriptor()
441 list_move_tail(&child->node, &chan->free_list); in zynqmp_dma_free_descriptor()
450 static void zynqmp_dma_free_desc_list(struct zynqmp_dma_chan *chan, in zynqmp_dma_free_desc_list() argument
456 zynqmp_dma_free_descriptor(chan, desc); in zynqmp_dma_free_desc_list()
467 struct zynqmp_dma_chan *chan = to_chan(dchan); in zynqmp_dma_alloc_chan_resources() local
471 ret = pm_runtime_resume_and_get(chan->dev); in zynqmp_dma_alloc_chan_resources()
475 chan->sw_desc_pool = kcalloc(ZYNQMP_DMA_NUM_DESCS, sizeof(*desc), in zynqmp_dma_alloc_chan_resources()
477 if (!chan->sw_desc_pool) in zynqmp_dma_alloc_chan_resources()
480 chan->idle = true; in zynqmp_dma_alloc_chan_resources()
481 chan->desc_free_cnt = ZYNQMP_DMA_NUM_DESCS; in zynqmp_dma_alloc_chan_resources()
483 INIT_LIST_HEAD(&chan->free_list); in zynqmp_dma_alloc_chan_resources()
486 desc = chan->sw_desc_pool + i; in zynqmp_dma_alloc_chan_resources()
487 dma_async_tx_descriptor_init(&desc->async_tx, &chan->common); in zynqmp_dma_alloc_chan_resources()
489 list_add_tail(&desc->node, &chan->free_list); in zynqmp_dma_alloc_chan_resources()
492 chan->desc_pool_v = dma_alloc_coherent(chan->dev, in zynqmp_dma_alloc_chan_resources()
493 (2 * ZYNQMP_DMA_DESC_SIZE(chan) * in zynqmp_dma_alloc_chan_resources()
495 &chan->desc_pool_p, GFP_KERNEL); in zynqmp_dma_alloc_chan_resources()
496 if (!chan->desc_pool_v) in zynqmp_dma_alloc_chan_resources()
500 desc = chan->sw_desc_pool + i; in zynqmp_dma_alloc_chan_resources()
501 desc->src_v = (struct zynqmp_dma_desc_ll *) (chan->desc_pool_v + in zynqmp_dma_alloc_chan_resources()
502 (i * ZYNQMP_DMA_DESC_SIZE(chan) * 2)); in zynqmp_dma_alloc_chan_resources()
504 desc->src_p = chan->desc_pool_p + in zynqmp_dma_alloc_chan_resources()
505 (i * ZYNQMP_DMA_DESC_SIZE(chan) * 2); in zynqmp_dma_alloc_chan_resources()
506 desc->dst_p = desc->src_p + ZYNQMP_DMA_DESC_SIZE(chan); in zynqmp_dma_alloc_chan_resources()
516 static void zynqmp_dma_start(struct zynqmp_dma_chan *chan) in zynqmp_dma_start() argument
518 writel(ZYNQMP_DMA_INT_EN_DEFAULT_MASK, chan->regs + ZYNQMP_DMA_IER); in zynqmp_dma_start()
519 writel(0, chan->regs + ZYNQMP_DMA_TOTAL_BYTE); in zynqmp_dma_start()
520 chan->idle = false; in zynqmp_dma_start()
521 writel(ZYNQMP_DMA_ENABLE, chan->regs + ZYNQMP_DMA_CTRL2); in zynqmp_dma_start()
529 static void zynqmp_dma_handle_ovfl_int(struct zynqmp_dma_chan *chan, u32 status) in zynqmp_dma_handle_ovfl_int() argument
532 writel(0, chan->regs + ZYNQMP_DMA_TOTAL_BYTE); in zynqmp_dma_handle_ovfl_int()
534 readl(chan->regs + ZYNQMP_DMA_IRQ_DST_ACCT); in zynqmp_dma_handle_ovfl_int()
536 readl(chan->regs + ZYNQMP_DMA_IRQ_SRC_ACCT); in zynqmp_dma_handle_ovfl_int()
539 static void zynqmp_dma_config(struct zynqmp_dma_chan *chan) in zynqmp_dma_config() argument
543 val = readl(chan->regs + ZYNQMP_DMA_CTRL0); in zynqmp_dma_config()
545 writel(val, chan->regs + ZYNQMP_DMA_CTRL0); in zynqmp_dma_config()
547 val = readl(chan->regs + ZYNQMP_DMA_DATA_ATTR); in zynqmp_dma_config()
548 burst_val = __ilog2_u32(chan->src_burst_len); in zynqmp_dma_config()
551 burst_val = __ilog2_u32(chan->dst_burst_len); in zynqmp_dma_config()
554 writel(val, chan->regs + ZYNQMP_DMA_DATA_ATTR); in zynqmp_dma_config()
567 struct zynqmp_dma_chan *chan = to_chan(dchan); in zynqmp_dma_device_config() local
569 chan->src_burst_len = clamp(config->src_maxburst, 1U, in zynqmp_dma_device_config()
571 chan->dst_burst_len = clamp(config->dst_maxburst, 1U, in zynqmp_dma_device_config()
581 static void zynqmp_dma_start_transfer(struct zynqmp_dma_chan *chan) in zynqmp_dma_start_transfer() argument
585 if (!chan->idle) in zynqmp_dma_start_transfer()
588 zynqmp_dma_config(chan); in zynqmp_dma_start_transfer()
590 desc = list_first_entry_or_null(&chan->pending_list, in zynqmp_dma_start_transfer()
595 list_splice_tail_init(&chan->pending_list, &chan->active_list); in zynqmp_dma_start_transfer()
596 zynqmp_dma_update_desc_to_ctrlr(chan, desc); in zynqmp_dma_start_transfer()
597 zynqmp_dma_start(chan); in zynqmp_dma_start_transfer()
605 static void zynqmp_dma_chan_desc_cleanup(struct zynqmp_dma_chan *chan) in zynqmp_dma_chan_desc_cleanup() argument
609 list_for_each_entry_safe(desc, next, &chan->done_list, node) { in zynqmp_dma_chan_desc_cleanup()
616 spin_unlock(&chan->lock); in zynqmp_dma_chan_desc_cleanup()
618 spin_lock(&chan->lock); in zynqmp_dma_chan_desc_cleanup()
622 zynqmp_dma_free_descriptor(chan, desc); in zynqmp_dma_chan_desc_cleanup()
630 static void zynqmp_dma_complete_descriptor(struct zynqmp_dma_chan *chan) in zynqmp_dma_complete_descriptor() argument
634 desc = list_first_entry_or_null(&chan->active_list, in zynqmp_dma_complete_descriptor()
640 list_add_tail(&desc->node, &chan->done_list); in zynqmp_dma_complete_descriptor()
649 struct zynqmp_dma_chan *chan = to_chan(dchan); in zynqmp_dma_issue_pending() local
652 spin_lock_irqsave(&chan->lock, irqflags); in zynqmp_dma_issue_pending()
653 zynqmp_dma_start_transfer(chan); in zynqmp_dma_issue_pending()
654 spin_unlock_irqrestore(&chan->lock, irqflags); in zynqmp_dma_issue_pending()
661 static void zynqmp_dma_free_descriptors(struct zynqmp_dma_chan *chan) in zynqmp_dma_free_descriptors() argument
663 zynqmp_dma_free_desc_list(chan, &chan->active_list); in zynqmp_dma_free_descriptors()
664 zynqmp_dma_free_desc_list(chan, &chan->pending_list); in zynqmp_dma_free_descriptors()
665 zynqmp_dma_free_desc_list(chan, &chan->done_list); in zynqmp_dma_free_descriptors()
674 struct zynqmp_dma_chan *chan = to_chan(dchan); in zynqmp_dma_free_chan_resources() local
677 spin_lock_irqsave(&chan->lock, irqflags); in zynqmp_dma_free_chan_resources()
678 zynqmp_dma_free_descriptors(chan); in zynqmp_dma_free_chan_resources()
679 spin_unlock_irqrestore(&chan->lock, irqflags); in zynqmp_dma_free_chan_resources()
680 dma_free_coherent(chan->dev, in zynqmp_dma_free_chan_resources()
681 (2 * ZYNQMP_DMA_DESC_SIZE(chan) * ZYNQMP_DMA_NUM_DESCS), in zynqmp_dma_free_chan_resources()
682 chan->desc_pool_v, chan->desc_pool_p); in zynqmp_dma_free_chan_resources()
683 kfree(chan->sw_desc_pool); in zynqmp_dma_free_chan_resources()
684 pm_runtime_mark_last_busy(chan->dev); in zynqmp_dma_free_chan_resources()
685 pm_runtime_put_autosuspend(chan->dev); in zynqmp_dma_free_chan_resources()
692 static void zynqmp_dma_reset(struct zynqmp_dma_chan *chan) in zynqmp_dma_reset() argument
694 writel(ZYNQMP_DMA_IDS_DEFAULT_MASK, chan->regs + ZYNQMP_DMA_IDS); in zynqmp_dma_reset()
696 zynqmp_dma_complete_descriptor(chan); in zynqmp_dma_reset()
697 zynqmp_dma_chan_desc_cleanup(chan); in zynqmp_dma_reset()
698 zynqmp_dma_free_descriptors(chan); in zynqmp_dma_reset()
699 zynqmp_dma_init(chan); in zynqmp_dma_reset()
711 struct zynqmp_dma_chan *chan = (struct zynqmp_dma_chan *)data; in zynqmp_dma_irq_handler() local
715 isr = readl(chan->regs + ZYNQMP_DMA_ISR); in zynqmp_dma_irq_handler()
716 imr = readl(chan->regs + ZYNQMP_DMA_IMR); in zynqmp_dma_irq_handler()
719 writel(isr, chan->regs + ZYNQMP_DMA_ISR); in zynqmp_dma_irq_handler()
721 tasklet_schedule(&chan->tasklet); in zynqmp_dma_irq_handler()
726 chan->idle = true; in zynqmp_dma_irq_handler()
729 chan->err = true; in zynqmp_dma_irq_handler()
730 tasklet_schedule(&chan->tasklet); in zynqmp_dma_irq_handler()
731 dev_err(chan->dev, "Channel %p has errors\n", chan); in zynqmp_dma_irq_handler()
736 zynqmp_dma_handle_ovfl_int(chan, status); in zynqmp_dma_irq_handler()
737 dev_dbg(chan->dev, "Channel %p overflow interrupt\n", chan); in zynqmp_dma_irq_handler()
750 struct zynqmp_dma_chan *chan = from_tasklet(chan, t, tasklet); in zynqmp_dma_do_tasklet() local
754 spin_lock_irqsave(&chan->lock, irqflags); in zynqmp_dma_do_tasklet()
756 if (chan->err) { in zynqmp_dma_do_tasklet()
757 zynqmp_dma_reset(chan); in zynqmp_dma_do_tasklet()
758 chan->err = false; in zynqmp_dma_do_tasklet()
762 count = readl(chan->regs + ZYNQMP_DMA_IRQ_DST_ACCT); in zynqmp_dma_do_tasklet()
765 zynqmp_dma_complete_descriptor(chan); in zynqmp_dma_do_tasklet()
766 zynqmp_dma_chan_desc_cleanup(chan); in zynqmp_dma_do_tasklet()
770 if (chan->idle) in zynqmp_dma_do_tasklet()
771 zynqmp_dma_start_transfer(chan); in zynqmp_dma_do_tasklet()
774 spin_unlock_irqrestore(&chan->lock, irqflags); in zynqmp_dma_do_tasklet()
785 struct zynqmp_dma_chan *chan = to_chan(dchan); in zynqmp_dma_device_terminate_all() local
788 spin_lock_irqsave(&chan->lock, irqflags); in zynqmp_dma_device_terminate_all()
789 writel(ZYNQMP_DMA_IDS_DEFAULT_MASK, chan->regs + ZYNQMP_DMA_IDS); in zynqmp_dma_device_terminate_all()
790 zynqmp_dma_free_descriptors(chan); in zynqmp_dma_device_terminate_all()
791 spin_unlock_irqrestore(&chan->lock, irqflags); in zynqmp_dma_device_terminate_all()
810 struct zynqmp_dma_chan *chan; in zynqmp_dma_prep_memcpy() local
817 chan = to_chan(dchan); in zynqmp_dma_prep_memcpy()
821 spin_lock_irqsave(&chan->lock, irqflags); in zynqmp_dma_prep_memcpy()
822 if (desc_cnt > chan->desc_free_cnt) { in zynqmp_dma_prep_memcpy()
823 spin_unlock_irqrestore(&chan->lock, irqflags); in zynqmp_dma_prep_memcpy()
824 dev_dbg(chan->dev, "chan %p descs are not available\n", chan); in zynqmp_dma_prep_memcpy()
827 chan->desc_free_cnt = chan->desc_free_cnt - desc_cnt; in zynqmp_dma_prep_memcpy()
828 spin_unlock_irqrestore(&chan->lock, irqflags); in zynqmp_dma_prep_memcpy()
832 new = zynqmp_dma_get_descriptor(chan); in zynqmp_dma_prep_memcpy()
836 zynqmp_dma_config_sg_ll_desc(chan, desc, dma_src, in zynqmp_dma_prep_memcpy()
848 zynqmp_dma_desc_config_eod(chan, desc); in zynqmp_dma_prep_memcpy()
858 static void zynqmp_dma_chan_remove(struct zynqmp_dma_chan *chan) in zynqmp_dma_chan_remove() argument
860 if (!chan) in zynqmp_dma_chan_remove()
863 if (chan->irq) in zynqmp_dma_chan_remove()
864 devm_free_irq(chan->zdev->dev, chan->irq, chan); in zynqmp_dma_chan_remove()
865 tasklet_kill(&chan->tasklet); in zynqmp_dma_chan_remove()
866 list_del(&chan->common.device_node); in zynqmp_dma_chan_remove()
879 struct zynqmp_dma_chan *chan; in zynqmp_dma_chan_probe() local
884 chan = devm_kzalloc(zdev->dev, sizeof(*chan), GFP_KERNEL); in zynqmp_dma_chan_probe()
885 if (!chan) in zynqmp_dma_chan_probe()
887 chan->dev = zdev->dev; in zynqmp_dma_chan_probe()
888 chan->zdev = zdev; in zynqmp_dma_chan_probe()
891 chan->regs = devm_ioremap_resource(&pdev->dev, res); in zynqmp_dma_chan_probe()
892 if (IS_ERR(chan->regs)) in zynqmp_dma_chan_probe()
893 return PTR_ERR(chan->regs); in zynqmp_dma_chan_probe()
895 chan->bus_width = ZYNQMP_DMA_BUS_WIDTH_64; in zynqmp_dma_chan_probe()
896 chan->dst_burst_len = ZYNQMP_DMA_MAX_DST_BURST_LEN; in zynqmp_dma_chan_probe()
897 chan->src_burst_len = ZYNQMP_DMA_MAX_SRC_BURST_LEN; in zynqmp_dma_chan_probe()
898 err = of_property_read_u32(node, "xlnx,bus-width", &chan->bus_width); in zynqmp_dma_chan_probe()
904 if (chan->bus_width != ZYNQMP_DMA_BUS_WIDTH_64 && in zynqmp_dma_chan_probe()
905 chan->bus_width != ZYNQMP_DMA_BUS_WIDTH_128) { in zynqmp_dma_chan_probe()
910 chan->is_dmacoherent = of_property_read_bool(node, "dma-coherent"); in zynqmp_dma_chan_probe()
911 zdev->chan = chan; in zynqmp_dma_chan_probe()
912 tasklet_setup(&chan->tasklet, zynqmp_dma_do_tasklet); in zynqmp_dma_chan_probe()
913 spin_lock_init(&chan->lock); in zynqmp_dma_chan_probe()
914 INIT_LIST_HEAD(&chan->active_list); in zynqmp_dma_chan_probe()
915 INIT_LIST_HEAD(&chan->pending_list); in zynqmp_dma_chan_probe()
916 INIT_LIST_HEAD(&chan->done_list); in zynqmp_dma_chan_probe()
917 INIT_LIST_HEAD(&chan->free_list); in zynqmp_dma_chan_probe()
919 dma_cookie_init(&chan->common); in zynqmp_dma_chan_probe()
920 chan->common.device = &zdev->common; in zynqmp_dma_chan_probe()
921 list_add_tail(&chan->common.device_node, &zdev->common.channels); in zynqmp_dma_chan_probe()
923 zynqmp_dma_init(chan); in zynqmp_dma_chan_probe()
924 chan->irq = platform_get_irq(pdev, 0); in zynqmp_dma_chan_probe()
925 if (chan->irq < 0) in zynqmp_dma_chan_probe()
927 err = devm_request_irq(&pdev->dev, chan->irq, zynqmp_dma_irq_handler, 0, in zynqmp_dma_chan_probe()
928 "zynqmp-dma", chan); in zynqmp_dma_chan_probe()
932 chan->desc_size = sizeof(struct zynqmp_dma_desc_ll); in zynqmp_dma_chan_probe()
933 chan->idle = true; in zynqmp_dma_chan_probe()
949 return dma_get_slave_channel(&zdev->chan->common); in of_zynqmp_dma_xlate()
1094 p->dst_addr_widths = BIT(zdev->chan->bus_width / 8); in zynqmp_dma_probe()
1095 p->src_addr_widths = BIT(zdev->chan->bus_width / 8); in zynqmp_dma_probe()
1115 zynqmp_dma_chan_remove(zdev->chan); in zynqmp_dma_probe()
1136 zynqmp_dma_chan_remove(zdev->chan); in zynqmp_dma_remove()