130 		  struct ioatdma_chan *ioat_chan, int idx);
414 	struct ioatdma_chan *ioat_chan;  in ioat_dma_setup_interrupts()  local
443 		ioat_chan = ioat_chan_by_index(ioat_dma, i);  in ioat_dma_setup_interrupts()
446 				       "ioat-msix", ioat_chan);  in ioat_dma_setup_interrupts()
450 				ioat_chan = ioat_chan_by_index(ioat_dma, j);  in ioat_dma_setup_interrupts()
451 				devm_free_irq(dev, msix->vector, ioat_chan);  in ioat_dma_setup_interrupts()
580 	struct ioatdma_chan *ioat_chan;  in ioat_enumerate_channels()  local
601 		ioat_chan = devm_kzalloc(dev, sizeof(*ioat_chan), GFP_KERNEL);  in ioat_enumerate_channels()
602 		if (!ioat_chan)  in ioat_enumerate_channels()
605 		ioat_init_channel(ioat_dma, ioat_chan, i);  in ioat_enumerate_channels()
606 		ioat_chan->xfercap_log = xfercap_log;  in ioat_enumerate_channels()
607 		spin_lock_init(&ioat_chan->prep_lock);  in ioat_enumerate_channels()
608 		if (ioat_reset_hw(ioat_chan)) {  in ioat_enumerate_channels()
623 	struct ioatdma_chan *ioat_chan = to_ioat_chan(c);  in ioat_free_chan_resources()  local
624 	struct ioatdma_device *ioat_dma = ioat_chan->ioat_dma;  in ioat_free_chan_resources()
626 	const int total_descs = 1 << ioat_chan->alloc_order;  in ioat_free_chan_resources()
633 	if (!ioat_chan->ring)  in ioat_free_chan_resources()
636 	ioat_stop(ioat_chan);  in ioat_free_chan_resources()
637 	ioat_reset_hw(ioat_chan);  in ioat_free_chan_resources()
639 	spin_lock_bh(&ioat_chan->cleanup_lock);  in ioat_free_chan_resources()
640 	spin_lock_bh(&ioat_chan->prep_lock);  in ioat_free_chan_resources()
641 	descs = ioat_ring_space(ioat_chan);  in ioat_free_chan_resources()
642 	dev_dbg(to_dev(ioat_chan), "freeing %d idle descriptors\n", descs);  in ioat_free_chan_resources()
644 		desc = ioat_get_ring_ent(ioat_chan, ioat_chan->head + i);  in ioat_free_chan_resources()
649 		dev_err(to_dev(ioat_chan), "Freeing %d in use descriptors!\n",  in ioat_free_chan_resources()
653 		desc = ioat_get_ring_ent(ioat_chan, ioat_chan->tail + i);  in ioat_free_chan_resources()
654 		dump_desc_dbg(ioat_chan, desc);  in ioat_free_chan_resources()
658 	for (i = 0; i < ioat_chan->desc_chunks; i++) {  in ioat_free_chan_resources()
659 		dma_free_coherent(to_dev(ioat_chan), SZ_2M,  in ioat_free_chan_resources()
660 				  ioat_chan->descs[i].virt,  in ioat_free_chan_resources()
661 				  ioat_chan->descs[i].hw);  in ioat_free_chan_resources()
662 		ioat_chan->descs[i].virt = NULL;  in ioat_free_chan_resources()
663 		ioat_chan->descs[i].hw = 0;  in ioat_free_chan_resources()
665 	ioat_chan->desc_chunks = 0;  in ioat_free_chan_resources()
667 	kfree(ioat_chan->ring);  in ioat_free_chan_resources()
668 	ioat_chan->ring = NULL;  in ioat_free_chan_resources()
669 	ioat_chan->alloc_order = 0;  in ioat_free_chan_resources()
670 	dma_pool_free(ioat_dma->completion_pool, ioat_chan->completion,  in ioat_free_chan_resources()
671 		      ioat_chan->completion_dma);  in ioat_free_chan_resources()
672 	spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_free_chan_resources()
673 	spin_unlock_bh(&ioat_chan->cleanup_lock);  in ioat_free_chan_resources()
675 	ioat_chan->last_completion = 0;  in ioat_free_chan_resources()
676 	ioat_chan->completion_dma = 0;  in ioat_free_chan_resources()
677 	ioat_chan->dmacount = 0;  in ioat_free_chan_resources()
685 	struct ioatdma_chan *ioat_chan = to_ioat_chan(c);  in ioat_alloc_chan_resources()  local
693 	if (ioat_chan->ring)  in ioat_alloc_chan_resources()
694 		return 1 << ioat_chan->alloc_order;  in ioat_alloc_chan_resources()
697 	writew(IOAT_CHANCTRL_RUN, ioat_chan->reg_base + IOAT_CHANCTRL_OFFSET);  in ioat_alloc_chan_resources()
701 	ioat_chan->completion =  in ioat_alloc_chan_resources()
702 		dma_pool_zalloc(ioat_chan->ioat_dma->completion_pool,  in ioat_alloc_chan_resources()
703 				GFP_NOWAIT, &ioat_chan->completion_dma);  in ioat_alloc_chan_resources()
704 	if (!ioat_chan->completion)  in ioat_alloc_chan_resources()
707 	writel(((u64)ioat_chan->completion_dma) & 0x00000000FFFFFFFF,  in ioat_alloc_chan_resources()
708 	       ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_LOW);  in ioat_alloc_chan_resources()
709 	writel(((u64)ioat_chan->completion_dma) >> 32,  in ioat_alloc_chan_resources()
710 	       ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_HIGH);  in ioat_alloc_chan_resources()
717 	spin_lock_bh(&ioat_chan->cleanup_lock);  in ioat_alloc_chan_resources()
718 	spin_lock_bh(&ioat_chan->prep_lock);  in ioat_alloc_chan_resources()
719 	ioat_chan->ring = ring;  in ioat_alloc_chan_resources()
720 	ioat_chan->head = 0;  in ioat_alloc_chan_resources()
721 	ioat_chan->issued = 0;  in ioat_alloc_chan_resources()
722 	ioat_chan->tail = 0;  in ioat_alloc_chan_resources()
723 	ioat_chan->alloc_order = order;  in ioat_alloc_chan_resources()
724 	set_bit(IOAT_RUN, &ioat_chan->state);  in ioat_alloc_chan_resources()
725 	spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_alloc_chan_resources()
726 	spin_unlock_bh(&ioat_chan->cleanup_lock);  in ioat_alloc_chan_resources()
728 	ioat_start_null_desc(ioat_chan);  in ioat_alloc_chan_resources()
733 		status = ioat_chansts(ioat_chan);  in ioat_alloc_chan_resources()
737 		return 1 << ioat_chan->alloc_order;  in ioat_alloc_chan_resources()
739 	chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET);  in ioat_alloc_chan_resources()
741 	dev_WARN(to_dev(ioat_chan),  in ioat_alloc_chan_resources()
750 		  struct ioatdma_chan *ioat_chan, int idx)  in ioat_init_channel()  argument
753 	struct dma_chan *c = &ioat_chan->dma_chan;  in ioat_init_channel()
756 	ioat_chan->ioat_dma = ioat_dma;  in ioat_init_channel()
757 	ioat_chan->reg_base = ioat_dma->reg_base + (0x80 * (idx + 1));  in ioat_init_channel()
758 	spin_lock_init(&ioat_chan->cleanup_lock);  in ioat_init_channel()
759 	ioat_chan->dma_chan.device = dma;  in ioat_init_channel()
760 	dma_cookie_init(&ioat_chan->dma_chan);  in ioat_init_channel()
761 	list_add_tail(&ioat_chan->dma_chan.device_node, &dma->channels);  in ioat_init_channel()
762 	ioat_dma->idx[idx] = ioat_chan;  in ioat_init_channel()
763 	timer_setup(&ioat_chan->timer, ioat_timer_event, 0);  in ioat_init_channel()
764 	tasklet_init(&ioat_chan->cleanup_task, ioat_cleanup_event, data);  in ioat_init_channel()
1050 	struct ioatdma_chan *ioat_chan;  in ioat_intr_quirk()  local
1061 			ioat_chan = to_ioat_chan(c);  in ioat_intr_quirk()
1062 			errmask = readl(ioat_chan->reg_base +  in ioat_intr_quirk()
1066 			writel(errmask, ioat_chan->reg_base +  in ioat_intr_quirk()
1078 	struct ioatdma_chan *ioat_chan;  in ioat3_dma_probe()  local
1164 		ioat_chan = to_ioat_chan(c);  in ioat3_dma_probe()
1166 		       ioat_chan->reg_base + IOAT_DCACTRL_OFFSET);  in ioat3_dma_probe()
1195 	struct ioatdma_chan *ioat_chan;  in ioat_shutdown()  local
1202 		ioat_chan = ioat_dma->idx[i];  in ioat_shutdown()
1203 		if (!ioat_chan)  in ioat_shutdown()
1206 		spin_lock_bh(&ioat_chan->prep_lock);  in ioat_shutdown()
1207 		set_bit(IOAT_CHAN_DOWN, &ioat_chan->state);  in ioat_shutdown()
1208 		del_timer_sync(&ioat_chan->timer);  in ioat_shutdown()
1209 		spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_shutdown()
1211 		ioat_reset_hw(ioat_chan);  in ioat_shutdown()
1219 	struct ioatdma_chan *ioat_chan;  in ioat_resume()  local
1224 		ioat_chan = ioat_dma->idx[i];  in ioat_resume()
1225 		if (!ioat_chan)  in ioat_resume()
1228 		spin_lock_bh(&ioat_chan->prep_lock);  in ioat_resume()
1229 		clear_bit(IOAT_CHAN_DOWN, &ioat_chan->state);  in ioat_resume()
1230 		spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_resume()
1232 		chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET);  in ioat_resume()
1233 		writel(chanerr, ioat_chan->reg_base + IOAT_CHANERR_OFFSET);  in ioat_resume()