121 		  struct ioatdma_chan *ioat_chan, int idx);
405 	struct ioatdma_chan *ioat_chan;  in ioat_dma_setup_interrupts()  local
434 		ioat_chan = ioat_chan_by_index(ioat_dma, i);  in ioat_dma_setup_interrupts()
437 				       "ioat-msix", ioat_chan);  in ioat_dma_setup_interrupts()
441 				ioat_chan = ioat_chan_by_index(ioat_dma, j);  in ioat_dma_setup_interrupts()
442 				devm_free_irq(dev, msix->vector, ioat_chan);  in ioat_dma_setup_interrupts()
555 	struct ioatdma_chan *ioat_chan;  in ioat_enumerate_channels()  local
577 		ioat_chan = kzalloc(sizeof(*ioat_chan), GFP_KERNEL);  in ioat_enumerate_channels()
578 		if (!ioat_chan)  in ioat_enumerate_channels()
581 		ioat_init_channel(ioat_dma, ioat_chan, i);  in ioat_enumerate_channels()
582 		ioat_chan->xfercap_log = xfercap_log;  in ioat_enumerate_channels()
583 		spin_lock_init(&ioat_chan->prep_lock);  in ioat_enumerate_channels()
584 		if (ioat_reset_hw(ioat_chan)) {  in ioat_enumerate_channels()
598 	struct ioatdma_chan *ioat_chan = to_ioat_chan(c);  in ioat_free_chan_resources()  local
599 	struct ioatdma_device *ioat_dma = ioat_chan->ioat_dma;  in ioat_free_chan_resources()
601 	const int total_descs = 1 << ioat_chan->alloc_order;  in ioat_free_chan_resources()
608 	if (!ioat_chan->ring)  in ioat_free_chan_resources()
611 	ioat_stop(ioat_chan);  in ioat_free_chan_resources()
613 	if (!test_bit(IOAT_CHAN_DOWN, &ioat_chan->state)) {  in ioat_free_chan_resources()
614 		ioat_reset_hw(ioat_chan);  in ioat_free_chan_resources()
619 			       ioat_chan->reg_base +  in ioat_free_chan_resources()
623 	spin_lock_bh(&ioat_chan->cleanup_lock);  in ioat_free_chan_resources()
624 	spin_lock_bh(&ioat_chan->prep_lock);  in ioat_free_chan_resources()
625 	descs = ioat_ring_space(ioat_chan);  in ioat_free_chan_resources()
626 	dev_dbg(to_dev(ioat_chan), "freeing %d idle descriptors\n", descs);  in ioat_free_chan_resources()
628 		desc = ioat_get_ring_ent(ioat_chan, ioat_chan->head + i);  in ioat_free_chan_resources()
633 		dev_err(to_dev(ioat_chan), "Freeing %d in use descriptors!\n",  in ioat_free_chan_resources()
637 		desc = ioat_get_ring_ent(ioat_chan, ioat_chan->tail + i);  in ioat_free_chan_resources()
638 		dump_desc_dbg(ioat_chan, desc);  in ioat_free_chan_resources()
642 	for (i = 0; i < ioat_chan->desc_chunks; i++) {  in ioat_free_chan_resources()
643 		dma_free_coherent(to_dev(ioat_chan), IOAT_CHUNK_SIZE,  in ioat_free_chan_resources()
644 				  ioat_chan->descs[i].virt,  in ioat_free_chan_resources()
645 				  ioat_chan->descs[i].hw);  in ioat_free_chan_resources()
646 		ioat_chan->descs[i].virt = NULL;  in ioat_free_chan_resources()
647 		ioat_chan->descs[i].hw = 0;  in ioat_free_chan_resources()
649 	ioat_chan->desc_chunks = 0;  in ioat_free_chan_resources()
651 	kfree(ioat_chan->ring);  in ioat_free_chan_resources()
652 	ioat_chan->ring = NULL;  in ioat_free_chan_resources()
653 	ioat_chan->alloc_order = 0;  in ioat_free_chan_resources()
654 	dma_pool_free(ioat_dma->completion_pool, ioat_chan->completion,  in ioat_free_chan_resources()
655 		      ioat_chan->completion_dma);  in ioat_free_chan_resources()
656 	spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_free_chan_resources()
657 	spin_unlock_bh(&ioat_chan->cleanup_lock);  in ioat_free_chan_resources()
659 	ioat_chan->last_completion = 0;  in ioat_free_chan_resources()
660 	ioat_chan->completion_dma = 0;  in ioat_free_chan_resources()
661 	ioat_chan->dmacount = 0;  in ioat_free_chan_resources()
669 	struct ioatdma_chan *ioat_chan = to_ioat_chan(c);  in ioat_alloc_chan_resources()  local
677 	if (ioat_chan->ring)  in ioat_alloc_chan_resources()
678 		return 1 << ioat_chan->alloc_order;  in ioat_alloc_chan_resources()
681 	writew(IOAT_CHANCTRL_RUN, ioat_chan->reg_base + IOAT_CHANCTRL_OFFSET);  in ioat_alloc_chan_resources()
685 	ioat_chan->completion =  in ioat_alloc_chan_resources()
686 		dma_pool_zalloc(ioat_chan->ioat_dma->completion_pool,  in ioat_alloc_chan_resources()
687 				GFP_NOWAIT, &ioat_chan->completion_dma);  in ioat_alloc_chan_resources()
688 	if (!ioat_chan->completion)  in ioat_alloc_chan_resources()
691 	writel(((u64)ioat_chan->completion_dma) & 0x00000000FFFFFFFF,  in ioat_alloc_chan_resources()
692 	       ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_LOW);  in ioat_alloc_chan_resources()
693 	writel(((u64)ioat_chan->completion_dma) >> 32,  in ioat_alloc_chan_resources()
694 	       ioat_chan->reg_base + IOAT_CHANCMP_OFFSET_HIGH);  in ioat_alloc_chan_resources()
701 	spin_lock_bh(&ioat_chan->cleanup_lock);  in ioat_alloc_chan_resources()
702 	spin_lock_bh(&ioat_chan->prep_lock);  in ioat_alloc_chan_resources()
703 	ioat_chan->ring = ring;  in ioat_alloc_chan_resources()
704 	ioat_chan->head = 0;  in ioat_alloc_chan_resources()
705 	ioat_chan->issued = 0;  in ioat_alloc_chan_resources()
706 	ioat_chan->tail = 0;  in ioat_alloc_chan_resources()
707 	ioat_chan->alloc_order = order;  in ioat_alloc_chan_resources()
708 	set_bit(IOAT_RUN, &ioat_chan->state);  in ioat_alloc_chan_resources()
709 	spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_alloc_chan_resources()
710 	spin_unlock_bh(&ioat_chan->cleanup_lock);  in ioat_alloc_chan_resources()
713 	if (ioat_chan->ioat_dma->version >= IOAT_VER_3_4) {  in ioat_alloc_chan_resources()
719 		writel(lat_val, ioat_chan->reg_base +  in ioat_alloc_chan_resources()
725 		writel(lat_val, ioat_chan->reg_base +  in ioat_alloc_chan_resources()
730 		       ioat_chan->reg_base +  in ioat_alloc_chan_resources()
734 	ioat_start_null_desc(ioat_chan);  in ioat_alloc_chan_resources()
739 		status = ioat_chansts(ioat_chan);  in ioat_alloc_chan_resources()
743 		return 1 << ioat_chan->alloc_order;  in ioat_alloc_chan_resources()
745 	chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET);  in ioat_alloc_chan_resources()
747 	dev_WARN(to_dev(ioat_chan),  in ioat_alloc_chan_resources()
756 		  struct ioatdma_chan *ioat_chan, int idx)  in ioat_init_channel()  argument
760 	ioat_chan->ioat_dma = ioat_dma;  in ioat_init_channel()
761 	ioat_chan->reg_base = ioat_dma->reg_base + (0x80 * (idx + 1));  in ioat_init_channel()
762 	spin_lock_init(&ioat_chan->cleanup_lock);  in ioat_init_channel()
763 	ioat_chan->dma_chan.device = dma;  in ioat_init_channel()
764 	dma_cookie_init(&ioat_chan->dma_chan);  in ioat_init_channel()
765 	list_add_tail(&ioat_chan->dma_chan.device_node, &dma->channels);  in ioat_init_channel()
766 	ioat_dma->idx[idx] = ioat_chan;  in ioat_init_channel()
767 	timer_setup(&ioat_chan->timer, ioat_timer_event, 0);  in ioat_init_channel()
768 	tasklet_setup(&ioat_chan->cleanup_task, ioat_cleanup_event);  in ioat_init_channel()
1054 	struct ioatdma_chan *ioat_chan;  in ioat_intr_quirk()  local
1065 			ioat_chan = to_ioat_chan(c);  in ioat_intr_quirk()
1066 			errmask = readl(ioat_chan->reg_base +  in ioat_intr_quirk()
1070 			writel(errmask, ioat_chan->reg_base +  in ioat_intr_quirk()
1082 	struct ioatdma_chan *ioat_chan;  in ioat3_dma_probe()  local
1168 		ioat_chan = to_ioat_chan(c);  in ioat3_dma_probe()
1170 		       ioat_chan->reg_base + IOAT_DCACTRL_OFFSET);  in ioat3_dma_probe()
1212 	struct ioatdma_chan *ioat_chan;  in ioat_shutdown()  local
1219 		ioat_chan = ioat_dma->idx[i];  in ioat_shutdown()
1220 		if (!ioat_chan)  in ioat_shutdown()
1223 		spin_lock_bh(&ioat_chan->prep_lock);  in ioat_shutdown()
1224 		set_bit(IOAT_CHAN_DOWN, &ioat_chan->state);  in ioat_shutdown()
1225 		spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_shutdown()
1232 		timer_delete_sync(&ioat_chan->timer);  in ioat_shutdown()
1235 		ioat_reset_hw(ioat_chan);  in ioat_shutdown()
1243 	struct ioatdma_chan *ioat_chan;  in ioat_resume()  local
1248 		ioat_chan = ioat_dma->idx[i];  in ioat_resume()
1249 		if (!ioat_chan)  in ioat_resume()
1252 		spin_lock_bh(&ioat_chan->prep_lock);  in ioat_resume()
1253 		clear_bit(IOAT_CHAN_DOWN, &ioat_chan->state);  in ioat_resume()
1254 		spin_unlock_bh(&ioat_chan->prep_lock);  in ioat_resume()
1256 		chanerr = readl(ioat_chan->reg_base + IOAT_CHANERR_OFFSET);  in ioat_resume()
1257 		writel(chanerr, ioat_chan->reg_base + IOAT_CHANERR_OFFSET);  in ioat_resume()