linux/drivers/dma/ti/k3-udma-private.c

// SPDX-License-Identifier: GPL-2.0
/*
 *  Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
 *  Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
 */
#include <linux/of.h>
#include <linux/of_platform.h>

int xudma_navss_psil_pair(struct udma_dev *ud, u32 src_thread, u32 dst_thread)
{
	return navss_psil_pair(ud, src_thread, dst_thread);
}
EXPORT_SYMBOL(xudma_navss_psil_pair);

int xudma_navss_psil_unpair(struct udma_dev *ud, u32 src_thread, u32 dst_thread)
{
	return navss_psil_unpair(ud, src_thread, dst_thread);
}
EXPORT_SYMBOL(xudma_navss_psil_unpair);

struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property)
{
	struct device_node *udma_node = np;
	struct platform_device *pdev;
	struct udma_dev *ud;

	if (property) {
		udma_node = of_parse_phandle(np, property, 0);
		if (!udma_node) {
			pr_err("UDMA node is not found\n");
			return ERR_PTR(-ENODEV);
		}
	}

	pdev = of_find_device_by_node(udma_node);
	if (np != udma_node)
		of_node_put(udma_node);

	if (!pdev) {
		pr_debug("UDMA device not found\n");
		return ERR_PTR(-EPROBE_DEFER);
	}

	ud = platform_get_drvdata(pdev);
	if (!ud) {
		pr_debug("UDMA has not been probed\n");
		put_device(&pdev->dev);
		return ERR_PTR(-EPROBE_DEFER);
	}

	return ud;
}
EXPORT_SYMBOL(of_xudma_dev_get);

struct device *xudma_get_device(struct udma_dev *ud)
{
	return ud->dev;
}
EXPORT_SYMBOL(xudma_get_device);

struct k3_ringacc *xudma_get_ringacc(struct udma_dev *ud)
{
	return ud->ringacc;
}
EXPORT_SYMBOL(xudma_get_ringacc);

u32 xudma_dev_get_psil_base(struct udma_dev *ud)
{
	return ud->psil_base;
}
EXPORT_SYMBOL(xudma_dev_get_psil_base);

struct udma_tisci_rm *xudma_dev_get_tisci_rm(struct udma_dev *ud)
{
	return &ud->tisci_rm;
}
EXPORT_SYMBOL(xudma_dev_get_tisci_rm);

int xudma_alloc_gp_rflow_range(struct udma_dev *ud, int from, int cnt)
{
	return __udma_alloc_gp_rflow_range(ud, from, cnt);
}
EXPORT_SYMBOL(xudma_alloc_gp_rflow_range);

int xudma_free_gp_rflow_range(struct udma_dev *ud, int from, int cnt)
{
	return __udma_free_gp_rflow_range(ud, from, cnt);
}
EXPORT_SYMBOL(xudma_free_gp_rflow_range);

bool xudma_rflow_is_gp(struct udma_dev *ud, int id)
{
	if (!ud->rflow_gp_map)
		return false;

	return !test_bit(id, ud->rflow_gp_map);
}
EXPORT_SYMBOL(xudma_rflow_is_gp);

#define XUDMA_GET_PUT_RESOURCE(res)					\
struct udma_##res *xudma_##res##_get(struct udma_dev *ud, int id)	\
{									\
	return __udma_reserve_##res(ud, UDMA_TP_NORMAL, id);		\
}									\
EXPORT_SYMBOL(xudma_##res##_get);					\
									\
void xudma_##res##_put(struct udma_dev *ud, struct udma_##res *p)	\
{									\
	clear_bit(p->id, ud->res##_map);				\
}									\
EXPORT_SYMBOL(xudma_##res##_put)
XUDMA_GET_PUT_RESOURCE(tchan);
XUDMA_GET_PUT_RESOURCE(rchan);

struct udma_rflow *xudma_rflow_get(struct udma_dev *ud, int id)
{
	return __udma_get_rflow(ud, id);
}
EXPORT_SYMBOL(xudma_rflow_get);

void xudma_rflow_put(struct udma_dev *ud, struct udma_rflow *p)
{
	__udma_put_rflow(ud, p);
}
EXPORT_SYMBOL(xudma_rflow_put);

int xudma_get_rflow_ring_offset(struct udma_dev *ud)
{
	return ud->tflow_cnt;
}
EXPORT_SYMBOL(xudma_get_rflow_ring_offset);

#define XUDMA_GET_RESOURCE_ID(res)					\
int xudma_##res##_get_id(struct udma_##res *p)				\
{									\
	return p->id;							\
}									\
EXPORT_SYMBOL(xudma_##res##_get_id)
XUDMA_GET_RESOURCE_ID(tchan);
XUDMA_GET_RESOURCE_ID(rchan);
XUDMA_GET_RESOURCE_ID(rflow);

/* Exported register access functions */
#define XUDMA_RT_IO_FUNCTIONS(res)					\
u32 xudma_##res##rt_read(struct udma_##res *p, int reg)			\
{									\
	if (!p)								\
		return 0;						\
	return udma_read(p->reg_rt, reg);				\
}									\
EXPORT_SYMBOL(xudma_##res##rt_read);					\
									\
void xudma_##res##rt_write(struct udma_##res *p, int reg, u32 val)	\
{									\
	if (!p)								\
		return;							\
	udma_write(p->reg_rt, reg, val);				\
}									\
EXPORT_SYMBOL(xudma_##res##rt_write)
XUDMA_RT_IO_FUNCTIONS(tchan);
XUDMA_RT_IO_FUNCTIONS(rchan);

int xudma_is_pktdma(struct udma_dev *ud)
{
	return ud->match_data->type == DMA_TYPE_PKTDMA;
}
EXPORT_SYMBOL(xudma_is_pktdma);

int xudma_pktdma_tflow_get_irq(struct udma_dev *ud, int udma_tflow_id)
{
	const struct udma_oes_offsets *oes = &ud->soc_data->oes;

	return msi_get_virq(ud->dev, udma_tflow_id + oes->pktdma_tchan_flow);
}
EXPORT_SYMBOL(xudma_pktdma_tflow_get_irq);

int xudma_pktdma_rflow_get_irq(struct udma_dev *ud, int udma_rflow_id)
{
	const struct udma_oes_offsets *oes = &ud->soc_data->oes;

	return msi_get_virq(ud->dev, udma_rflow_id + oes->pktdma_rchan_flow);
}
EXPORT_SYMBOL(xudma_pktdma_rflow_get_irq);