127 		  struct ioatdma_chan *ioat_chan, int idx);
412 	struct ioatdma_chan *ioat_chan;  in ioat_dma_setup_interrupts()  local
441 		ioat_chan = ioat_chan_by_index(ioat_dma, i);  in ioat_dma_setup_interrupts()
444 				       "ioat-msix", ioat_chan);  in ioat_dma_setup_interrupts()
448 				ioat_chan = ioat_chan_by_index(ioat_dma, j);  in ioat_dma_setup_interrupts()
449 				devm_free_irq(dev, msix->vector, ioat_chan);  in ioat_dma_setup_interrupts()
591 	struct ioatdma_chan *ioat_chan;  in ioat_enumerate_channels()  local
612 		ioat_chan = devm_kzalloc(dev, sizeof(*ioat_chan), GFP_KERNEL);  in ioat_enumerate_channels()
613 		if (!ioat_chan)  in ioat_enumerate_channels()
616 		ioat_init_channel(ioat_dma, ioat_chan, i);  in ioat_enumerate_channels()
617 		ioat_chan->xfercap_log = xfercap_log;  in ioat_enumerate_channels()
618 		spin_lock_init(&ioat_chan->prep_lock);  in ioat_enumerate_channels()
619 		if (ioat_reset_hw(ioat_chan)) {  in ioat_enumerate_channels()
634 	struct ioatdma_chan *ioat_chan = to_ioat_chan(c);  in ioat_free_chan_resources()  local
635 	struct ioatdma_device *ioat_dma = ioat_chan->ioat_dma;  in ioat_free_chan_resources()
637 	const int total_descs = 1 << ioat_chan->alloc_order;  in ioat_free_chan_resources()
644 	if (!ioat_chan->ring)  in ioat_free_chan_resources()
647 	ioat_stop(ioat_chan);  in ioat_free_chan_resources()
648 	ioat_reset_hw(ioat_chan);  in ioat_free_chan_resources()
650 	spin_lock_bh(&ioat_chan->cleanup_lock);  in ioat_free_chan_resources()
651 	spin_lock_bh(&ioat_chan->prep_lock);  in ioat_free_chan_resources()
652 	descs = ioat_ring_space(ioat_chan);  in ioat_free_chan_resources()
653 	dev_dbg(to_dev(ioat_chan), "freeing %d idle descriptors\n", descs);  in ioat_free_chan_resources()
655 		desc = ioat_get_ring_ent(ioat_chan, ioat_chan->head + i);  in ioat_free_chan_resources()
660 		dev_err(to_dev(ioat_chan), "Freeing %d in use descriptors!\n",  in ioat_free_chan_resources()
664 		desc = ioat_get_ring_ent(ioat_chan, ioat_chan->tail + i);  in ioat_free_chan_resources()
665 		dump_desc_dbg(ioat_chan, desc);  in ioat_free_chan_resources()
669 	kfree(ioat_chan->ring);  in ioat_free_chan_resources()
670 	ioat_chan->ring = NULL;  in ioat_free_chan_resources()
671 	ioat_chan->alloc_order = 0;  in ioat_free_chan_resources()
672 	pci_pool_free(ioat_dma->completion_pool, ioat_chan->completion,  in ioat_free_chan_resources()
673 		      ioat_chan->completion_dma);  in ioat_free_chan_resources()
674 	spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_free_chan_resources()
675 	spin_unlock_bh(&ioat_chan->cleanup_lock);  in ioat_free_chan_resources()
677 	ioat_chan->last_completion = 0;  in ioat_free_chan_resources()
678 	ioat_chan->completion_dma = 0;  in ioat_free_chan_resources()
679 	ioat_chan->dmacount = 0;  in ioat_free_chan_resources()
687 	struct ioatdma_chan *ioat_chan = to_ioat_chan(c);  in ioat_alloc_chan_resources()  local
695 	if (ioat_chan->ring)  in ioat_alloc_chan_resources()
696 		return 1 << ioat_chan->alloc_order;  in ioat_alloc_chan_resources()
699 	writew(IOAT_CHANCTRL_RUN, ioat_chan->reg_base + IOAT_CHANCTRL_OFFSET);  in ioat_alloc_chan_resources()
703 	ioat_chan->completion =  in ioat_alloc_chan_resources()
704 		pci_pool_alloc(ioat_chan->ioat_dma->completion_pool,  in ioat_alloc_chan_resources()
705 			       GFP_KERNEL, &ioat_chan->completion_dma);  in ioat_alloc_chan_resources()
706 	if (!ioat_chan->completion)  in ioat_alloc_chan_resources()
709 	memset(ioat_chan->completion, 0, sizeof(*ioat_chan->completion));  in ioat_alloc_chan_resources()
710 	writel(((u64)ioat_chan->completion_dma) & 0x00000000FFFFFFFF,  in ioat_alloc_chan_resources()
711 	       ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_LOW);  in ioat_alloc_chan_resources()
712 	writel(((u64)ioat_chan->completion_dma) >> 32,  in ioat_alloc_chan_resources()
713 	       ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_HIGH);  in ioat_alloc_chan_resources()
720 	spin_lock_bh(&ioat_chan->cleanup_lock);  in ioat_alloc_chan_resources()
721 	spin_lock_bh(&ioat_chan->prep_lock);  in ioat_alloc_chan_resources()
722 	ioat_chan->ring = ring;  in ioat_alloc_chan_resources()
723 	ioat_chan->head = 0;  in ioat_alloc_chan_resources()
724 	ioat_chan->issued = 0;  in ioat_alloc_chan_resources()
725 	ioat_chan->tail = 0;  in ioat_alloc_chan_resources()
726 	ioat_chan->alloc_order = order;  in ioat_alloc_chan_resources()
727 	set_bit(IOAT_RUN, &ioat_chan->state);  in ioat_alloc_chan_resources()
728 	spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_alloc_chan_resources()
729 	spin_unlock_bh(&ioat_chan->cleanup_lock);  in ioat_alloc_chan_resources()
731 	ioat_start_null_desc(ioat_chan);  in ioat_alloc_chan_resources()
736 		status = ioat_chansts(ioat_chan);  in ioat_alloc_chan_resources()
740 		return 1 << ioat_chan->alloc_order;  in ioat_alloc_chan_resources()
742 	chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET);  in ioat_alloc_chan_resources()
744 	dev_WARN(to_dev(ioat_chan),  in ioat_alloc_chan_resources()
753 		  struct ioatdma_chan *ioat_chan, int idx)  in ioat_init_channel()  argument
756 	struct dma_chan *c = &ioat_chan->dma_chan;  in ioat_init_channel()
759 	ioat_chan->ioat_dma = ioat_dma;  in ioat_init_channel()
760 	ioat_chan->reg_base = ioat_dma->reg_base + (0x80 * (idx + 1));  in ioat_init_channel()
761 	spin_lock_init(&ioat_chan->cleanup_lock);  in ioat_init_channel()
762 	ioat_chan->dma_chan.device = dma;  in ioat_init_channel()
763 	dma_cookie_init(&ioat_chan->dma_chan);  in ioat_init_channel()
764 	list_add_tail(&ioat_chan->dma_chan.device_node, &dma->channels);  in ioat_init_channel()
765 	ioat_dma->idx[idx] = ioat_chan;  in ioat_init_channel()
766 	init_timer(&ioat_chan->timer);  in ioat_init_channel()
767 	ioat_chan->timer.function = ioat_timer_event;  in ioat_init_channel()
768 	ioat_chan->timer.data = data;  in ioat_init_channel()
769 	tasklet_init(&ioat_chan->cleanup_task, ioat_cleanup_event, data);  in ioat_init_channel()
1057 	struct ioatdma_chan *ioat_chan;  in ioat_intr_quirk()  local
1068 			ioat_chan = to_ioat_chan(c);  in ioat_intr_quirk()
1069 			errmask = readl(ioat_chan->reg_base +  in ioat_intr_quirk()
1073 			writel(errmask, ioat_chan->reg_base +  in ioat_intr_quirk()
1085 	struct ioatdma_chan *ioat_chan;  in ioat3_dma_probe()  local
1173 		ioat_chan = to_ioat_chan(c);  in ioat3_dma_probe()
1175 		       ioat_chan->reg_base + IOAT_DCACTRL_OFFSET);  in ioat3_dma_probe()
1193 	struct ioatdma_chan *ioat_chan;  in ioat_shutdown()  local
1200 		ioat_chan = ioat_dma->idx[i];  in ioat_shutdown()
1201 		if (!ioat_chan)  in ioat_shutdown()
1204 		spin_lock_bh(&ioat_chan->prep_lock);  in ioat_shutdown()
1205 		set_bit(IOAT_CHAN_DOWN, &ioat_chan->state);  in ioat_shutdown()
1206 		del_timer_sync(&ioat_chan->timer);  in ioat_shutdown()
1207 		spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_shutdown()
1209 		ioat_reset_hw(ioat_chan);  in ioat_shutdown()
1217 	struct ioatdma_chan *ioat_chan;  in ioat_resume()  local
1222 		ioat_chan = ioat_dma->idx[i];  in ioat_resume()
1223 		if (!ioat_chan)  in ioat_resume()
1226 		spin_lock_bh(&ioat_chan->prep_lock);  in ioat_resume()
1227 		clear_bit(IOAT_CHAN_DOWN, &ioat_chan->state);  in ioat_resume()
1228 		spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_resume()
1230 		chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET);  in ioat_resume()
1231 		writel(chanerr, ioat_chan->reg_base + IOAT_CHANERR_OFFSET);  in ioat_resume()