20 #define XDMAC_CH_WIDTH		0x100
22 #define XDMAC_TFA		0x08
24 #define XDMAC_TFA_MASK		GENMASK(5, 0)
25 #define XDMAC_SADM		0x10
29 #define XDMAC_SADM_SAM_INC	0
30 #define XDMAC_DADM		0x14
35 #define XDMAC_EXSAD		0x18
36 #define XDMAC_EXDAD		0x1c
37 #define XDMAC_SAD		0x20
38 #define XDMAC_DAD		0x24
39 #define XDMAC_ITS		0x28
40 #define XDMAC_ITS_MASK		GENMASK(25, 0)
41 #define XDMAC_TNUM		0x2c
42 #define XDMAC_TNUM_MASK		GENMASK(15, 0)
43 #define XDMAC_TSS		0x30
44 #define XDMAC_TSS_REQ		BIT(0)
45 #define XDMAC_IEN		0x34
47 #define XDMAC_IEN_ENDIEN	BIT(0)
48 #define XDMAC_STAT		0x40
49 #define XDMAC_STAT_TENF		BIT(0)
50 #define XDMAC_IR		0x44
52 #define XDMAC_IR_ENDF		BIT(0)
53 #define XDMAC_ID		0x48
55 #define XDMAC_ID_ENDIDF		BIT(0)
62 #define XDMAC_MAX_WORD_SIZE	(XDMAC_ITS_MASK & ~GENMASK(3, 0))
89 	struct uniphier_xdmac_desc *xd;  member
132 				      struct uniphier_xdmac_desc *xd)  in uniphier_xdmac_chan_start()  argument
140 	src_addr = xd->nodes[xd->cur_node].src;  in uniphier_xdmac_chan_start()
141 	dst_addr = xd->nodes[xd->cur_node].dst;  in uniphier_xdmac_chan_start()
142 	its      = xd->nodes[xd->cur_node].burst_size;  in uniphier_xdmac_chan_start()
143 	tnum     = xd->nodes[xd->cur_node].nr_burst;  in uniphier_xdmac_chan_start()
149 	if (xd->dir == DMA_DEV_TO_MEM) {  in uniphier_xdmac_chan_start()
158 	if (xd->dir == DMA_MEM_TO_DEV) {  in uniphier_xdmac_chan_start()
210 	writel(0, xc->reg_ch_base + XDMAC_TSS);  in uniphier_xdmac_chan_stop()
220 	struct uniphier_xdmac_desc *xd;  in uniphier_xdmac_start()  local
222 	xd = uniphier_xdmac_next_desc(xc);  in uniphier_xdmac_start()
223 	if (xd)  in uniphier_xdmac_start()
224 		uniphier_xdmac_chan_start(xc, xd);  in uniphier_xdmac_start()
226 	/* set desc to chan regardless of xd is null */  in uniphier_xdmac_start()
227 	xc->xd = xd;  in uniphier_xdmac_start()
248 	} else if ((stat & XDMAC_ID_ENDIDF) && xc->xd) {  in uniphier_xdmac_chan_irq()
249 		xc->xd->cur_node++;  in uniphier_xdmac_chan_irq()
250 		if (xc->xd->cur_node >= xc->xd->nr_node) {  in uniphier_xdmac_chan_irq()
251 			vchan_cookie_complete(&xc->xd->vd);  in uniphier_xdmac_chan_irq()
254 			uniphier_xdmac_chan_start(xc, xc->xd);  in uniphier_xdmac_chan_irq()
269 	for (i = 0; i < xdev->nr_chans; i++)  in uniphier_xdmac_irq_handler()
285 	struct uniphier_xdmac_desc *xd;  in uniphier_xdmac_prep_dma_memcpy()  local
295 	xd = kzalloc(struct_size(xd, nodes, nr), GFP_NOWAIT);  in uniphier_xdmac_prep_dma_memcpy()
296 	if (!xd)  in uniphier_xdmac_prep_dma_memcpy()
299 	for (i = 0; i < nr; i++) {  in uniphier_xdmac_prep_dma_memcpy()
301 		xd->nodes[i].src = src;  in uniphier_xdmac_prep_dma_memcpy()
302 		xd->nodes[i].dst = dst;  in uniphier_xdmac_prep_dma_memcpy()
303 		xd->nodes[i].burst_size = burst_size;  in uniphier_xdmac_prep_dma_memcpy()
304 		xd->nodes[i].nr_burst = len / burst_size;  in uniphier_xdmac_prep_dma_memcpy()
311 	xd->dir = DMA_MEM_TO_MEM;  in uniphier_xdmac_prep_dma_memcpy()
312 	xd->nr_node = nr;  in uniphier_xdmac_prep_dma_memcpy()
313 	xd->cur_node = 0;  in uniphier_xdmac_prep_dma_memcpy()
315 	return vchan_tx_prep(vc, &xd->vd, flags);  in uniphier_xdmac_prep_dma_memcpy()
326 	struct uniphier_xdmac_desc *xd;  in uniphier_xdmac_prep_slave_sg()  local
351 	xd = kzalloc(struct_size(xd, nodes, sg_len), GFP_NOWAIT);  in uniphier_xdmac_prep_slave_sg()
352 	if (!xd)  in uniphier_xdmac_prep_slave_sg()
356 		xd->nodes[i].src = (direction == DMA_DEV_TO_MEM)  in uniphier_xdmac_prep_slave_sg()
358 		xd->nodes[i].dst = (direction == DMA_MEM_TO_DEV)  in uniphier_xdmac_prep_slave_sg()
360 		xd->nodes[i].burst_size = maxburst * buswidth;  in uniphier_xdmac_prep_slave_sg()
361 		xd->nodes[i].nr_burst =  in uniphier_xdmac_prep_slave_sg()
362 			sg_dma_len(sg) / xd->nodes[i].burst_size;  in uniphier_xdmac_prep_slave_sg()
372 		if (sg_dma_len(sg) % xd->nodes[i].burst_size) {  in uniphier_xdmac_prep_slave_sg()
375 			kfree(xd);  in uniphier_xdmac_prep_slave_sg()
379 		if (xd->nodes[i].nr_burst > XDMAC_MAX_WORDS) {  in uniphier_xdmac_prep_slave_sg()
382 			kfree(xd);  in uniphier_xdmac_prep_slave_sg()
387 	xd->dir = direction;  in uniphier_xdmac_prep_slave_sg()
388 	xd->nr_node = sg_len;  in uniphier_xdmac_prep_slave_sg()
389 	xd->cur_node = 0;  in uniphier_xdmac_prep_slave_sg()
391 	return vchan_tx_prep(vc, &xd->vd, flags);  in uniphier_xdmac_prep_slave_sg()
402 	return 0;  in uniphier_xdmac_slave_config()
410 	int ret = 0;  in uniphier_xdmac_terminate_all()
415 	if (xc->xd) {  in uniphier_xdmac_terminate_all()
416 		vchan_terminate_vdesc(&xc->xd->vd);  in uniphier_xdmac_terminate_all()
417 		xc->xd = NULL;  in uniphier_xdmac_terminate_all()
443 	if (vchan_issue_pending(vc) && !xc->xd)  in uniphier_xdmac_issue_pending()
470 	int chan_id = dma_spec->args[0];  in of_dma_uniphier_xlate()
501 	xdev->reg_base = devm_platform_ioremap_resource(pdev, 0);  in uniphier_xdmac_probe()
526 	for (i = 0; i < nr_chans; i++)  in uniphier_xdmac_probe()
529 	irq = platform_get_irq(pdev, 0);  in uniphier_xdmac_probe()
530 	if (irq < 0)  in uniphier_xdmac_probe()
558 	return 0;  in uniphier_xdmac_probe()
590 	return 0;  in uniphier_xdmac_remove()