Commit 1609c15a authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Vinod Koul
Browse files

dmaengine: ti: k3-udma: Add support for second resource range from sysfw 



Resource allocation via sysfw can use up to two ranges per resource subtype
to support more complex resource assignment, mainly for DMA channels.

Take the second range also into consideration when setting up the maps for
available resources.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20201208090440.31792-4-peter.ujfalusi@ti.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 5e1cb1cb

drivers/dma/ti/k3-udma.c

+31 −24
Original line number Diff line number Diff line
@@ -3174,12 +3174,22 @@ static int udma_get_mmrs(struct platform_device *pdev, struct udma_dev *ud) 
	return 0;

}



static void udma_mark_resource_ranges(struct udma_dev *ud, unsigned long *map,

				      struct ti_sci_resource_desc *rm_desc,

				      char *name)

{

	bitmap_clear(map, rm_desc->start, rm_desc->num);

	bitmap_clear(map, rm_desc->start_sec, rm_desc->num_sec);

	dev_dbg(ud->dev, "ti_sci resource range for %s: %d:%d | %d:%d\n", name,

		rm_desc->start, rm_desc->num, rm_desc->start_sec,

		rm_desc->num_sec);

}



static int udma_setup_resources(struct udma_dev *ud)

{

	struct device *dev = ud->dev;

	int ch_count, ret, i, j;

	u32 cap2, cap3;

	struct ti_sci_resource_desc *rm_desc;

	struct ti_sci_resource *rm_res, irq_res;

	struct udma_tisci_rm *tisci_rm = &ud->tisci_rm;

	static const char * const range_names[] = { "ti,sci-rm-range-tchan",
@@ -3264,13 +3274,9 @@ static int udma_setup_resources(struct udma_dev *ud) 
		bitmap_zero(ud->tchan_map, ud->tchan_cnt);

	} else {

		bitmap_fill(ud->tchan_map, ud->tchan_cnt);

		for (i = 0; i < rm_res->sets; i++) {

			rm_desc = &rm_res->desc[i];

			bitmap_clear(ud->tchan_map, rm_desc->start,

				     rm_desc->num);

			dev_dbg(dev, "ti-sci-res: tchan: %d:%d\n",

				rm_desc->start, rm_desc->num);

		}

		for (i = 0; i < rm_res->sets; i++)

			udma_mark_resource_ranges(ud, ud->tchan_map,

						  &rm_res->desc[i], "tchan");

	}

	irq_res.sets = rm_res->sets;
@@ -3280,13 +3286,9 @@ static int udma_setup_resources(struct udma_dev *ud) 
		bitmap_zero(ud->rchan_map, ud->rchan_cnt);

	} else {

		bitmap_fill(ud->rchan_map, ud->rchan_cnt);

		for (i = 0; i < rm_res->sets; i++) {

			rm_desc = &rm_res->desc[i];

			bitmap_clear(ud->rchan_map, rm_desc->start,

				     rm_desc->num);

			dev_dbg(dev, "ti-sci-res: rchan: %d:%d\n",

				rm_desc->start, rm_desc->num);

		}

		for (i = 0; i < rm_res->sets; i++)

			udma_mark_resource_ranges(ud, ud->rchan_map,

						  &rm_res->desc[i], "rchan");

	}



	irq_res.sets += rm_res->sets;
@@ -3295,13 +3297,22 @@ static int udma_setup_resources(struct udma_dev *ud) 
	for (i = 0; i < rm_res->sets; i++) {

		irq_res.desc[i].start = rm_res->desc[i].start;

		irq_res.desc[i].num = rm_res->desc[i].num;

		irq_res.desc[i].start_sec = rm_res->desc[i].start_sec;

		irq_res.desc[i].num_sec = rm_res->desc[i].num_sec;

	}

	rm_res = tisci_rm->rm_ranges[RM_RANGE_RCHAN];

	for (j = 0; j < rm_res->sets; j++, i++) {

		if (rm_res->desc[j].num) {

			irq_res.desc[i].start = rm_res->desc[j].start +

					ud->soc_data->rchan_oes_offset;

			irq_res.desc[i].num = rm_res->desc[j].num;

		}

		if (rm_res->desc[j].num_sec) {

			irq_res.desc[i].start_sec = rm_res->desc[j].start_sec +

					ud->soc_data->rchan_oes_offset;

			irq_res.desc[i].num_sec = rm_res->desc[j].num_sec;

		}

	}

	ret = ti_sci_inta_msi_domain_alloc_irqs(ud->dev, &irq_res);

	kfree(irq_res.desc);

	if (ret) {
@@ -3316,13 +3327,9 @@ static int udma_setup_resources(struct udma_dev *ud) 
		bitmap_clear(ud->rflow_gp_map, ud->rchan_cnt,

			     ud->rflow_cnt - ud->rchan_cnt);

	} else {

		for (i = 0; i < rm_res->sets; i++) {

			rm_desc = &rm_res->desc[i];

			bitmap_clear(ud->rflow_gp_map, rm_desc->start,

				     rm_desc->num);

			dev_dbg(dev, "ti-sci-res: rflow: %d:%d\n",

				rm_desc->start, rm_desc->num);

		}

		for (i = 0; i < rm_res->sets; i++)

			udma_mark_resource_ranges(ud, ud->rflow_gp_map,

						  &rm_res->desc[i], "gp-rflow");

	}



	ch_count -= bitmap_weight(ud->tchan_map, ud->tchan_cnt);

CRA Git | Maintained and supported by SUSTech CRA and CCSE