1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
4 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
5 */
6#include <linux/of.h>
7#include <linux/of_platform.h>
8
9int xudma_navss_psil_pair(struct udma_dev *ud, u32 src_thread, u32 dst_thread)
10{
11 return navss_psil_pair(ud, src_thread, dst_thread);
12}
13EXPORT_SYMBOL(xudma_navss_psil_pair);
14
15int xudma_navss_psil_unpair(struct udma_dev *ud, u32 src_thread, u32 dst_thread)
16{
17 return navss_psil_unpair(ud, src_thread, dst_thread);
18}
19EXPORT_SYMBOL(xudma_navss_psil_unpair);
20
21struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property)
22{
23 struct device_node *udma_node = np;
24 struct platform_device *pdev;
25 struct udma_dev *ud;
26
27 if (property) {
28 udma_node = of_parse_phandle(np, phandle_name: property, index: 0);
29 if (!udma_node) {
30 pr_err("UDMA node is not found\n");
31 return ERR_PTR(error: -ENODEV);
32 }
33 }
34
35 pdev = of_find_device_by_node(np: udma_node);
36 if (np != udma_node)
37 of_node_put(node: udma_node);
38
39 if (!pdev) {
40 pr_debug("UDMA device not found\n");
41 return ERR_PTR(error: -EPROBE_DEFER);
42 }
43
44 ud = platform_get_drvdata(pdev);
45 if (!ud) {
46 pr_debug("UDMA has not been probed\n");
47 put_device(&pdev->dev);
48 return ERR_PTR(error: -EPROBE_DEFER);
49 }
50
51 return ud;
52}
53EXPORT_SYMBOL(of_xudma_dev_get);
54
55struct device *xudma_get_device(struct udma_dev *ud)
56{
57 return ud->dev;
58}
59EXPORT_SYMBOL(xudma_get_device);
60
61struct k3_ringacc *xudma_get_ringacc(struct udma_dev *ud)
62{
63 return ud->ringacc;
64}
65EXPORT_SYMBOL(xudma_get_ringacc);
66
67u32 xudma_dev_get_psil_base(struct udma_dev *ud)
68{
69 return ud->psil_base;
70}
71EXPORT_SYMBOL(xudma_dev_get_psil_base);
72
73struct udma_tisci_rm *xudma_dev_get_tisci_rm(struct udma_dev *ud)
74{
75 return &ud->tisci_rm;
76}
77EXPORT_SYMBOL(xudma_dev_get_tisci_rm);
78
79int xudma_alloc_gp_rflow_range(struct udma_dev *ud, int from, int cnt)
80{
81 return __udma_alloc_gp_rflow_range(ud, from, cnt);
82}
83EXPORT_SYMBOL(xudma_alloc_gp_rflow_range);
84
85int xudma_free_gp_rflow_range(struct udma_dev *ud, int from, int cnt)
86{
87 return __udma_free_gp_rflow_range(ud, from, cnt);
88}
89EXPORT_SYMBOL(xudma_free_gp_rflow_range);
90
91bool xudma_rflow_is_gp(struct udma_dev *ud, int id)
92{
93 if (!ud->rflow_gp_map)
94 return false;
95
96 return !test_bit(id, ud->rflow_gp_map);
97}
98EXPORT_SYMBOL(xudma_rflow_is_gp);
99
100#define XUDMA_GET_PUT_RESOURCE(res) \
101struct udma_##res *xudma_##res##_get(struct udma_dev *ud, int id) \
102{ \
103 return __udma_reserve_##res(ud, UDMA_TP_NORMAL, id); \
104} \
105EXPORT_SYMBOL(xudma_##res##_get); \
106 \
107void xudma_##res##_put(struct udma_dev *ud, struct udma_##res *p) \
108{ \
109 clear_bit(p->id, ud->res##_map); \
110} \
111EXPORT_SYMBOL(xudma_##res##_put)
112XUDMA_GET_PUT_RESOURCE(tchan);
113XUDMA_GET_PUT_RESOURCE(rchan);
114
115struct udma_rflow *xudma_rflow_get(struct udma_dev *ud, int id)
116{
117 return __udma_get_rflow(ud, id);
118}
119EXPORT_SYMBOL(xudma_rflow_get);
120
121void xudma_rflow_put(struct udma_dev *ud, struct udma_rflow *p)
122{
123 __udma_put_rflow(ud, p);
124}
125EXPORT_SYMBOL(xudma_rflow_put);
126
127int xudma_get_rflow_ring_offset(struct udma_dev *ud)
128{
129 return ud->tflow_cnt;
130}
131EXPORT_SYMBOL(xudma_get_rflow_ring_offset);
132
133#define XUDMA_GET_RESOURCE_ID(res) \
134int xudma_##res##_get_id(struct udma_##res *p) \
135{ \
136 return p->id; \
137} \
138EXPORT_SYMBOL(xudma_##res##_get_id)
139XUDMA_GET_RESOURCE_ID(tchan);
140XUDMA_GET_RESOURCE_ID(rchan);
141XUDMA_GET_RESOURCE_ID(rflow);
142
143/* Exported register access functions */
144#define XUDMA_RT_IO_FUNCTIONS(res) \
145u32 xudma_##res##rt_read(struct udma_##res *p, int reg) \
146{ \
147 if (!p) \
148 return 0; \
149 return udma_read(p->reg_rt, reg); \
150} \
151EXPORT_SYMBOL(xudma_##res##rt_read); \
152 \
153void xudma_##res##rt_write(struct udma_##res *p, int reg, u32 val) \
154{ \
155 if (!p) \
156 return; \
157 udma_write(p->reg_rt, reg, val); \
158} \
159EXPORT_SYMBOL(xudma_##res##rt_write)
160XUDMA_RT_IO_FUNCTIONS(tchan);
161XUDMA_RT_IO_FUNCTIONS(rchan);
162
163int xudma_is_pktdma(struct udma_dev *ud)
164{
165 return ud->match_data->type == DMA_TYPE_PKTDMA;
166}
167EXPORT_SYMBOL(xudma_is_pktdma);
168
169int xudma_pktdma_tflow_get_irq(struct udma_dev *ud, int udma_tflow_id)
170{
171 const struct udma_oes_offsets *oes = &ud->soc_data->oes;
172
173 return msi_get_virq(ud->dev, udma_tflow_id + oes->pktdma_tchan_flow);
174}
175EXPORT_SYMBOL(xudma_pktdma_tflow_get_irq);
176
177int xudma_pktdma_rflow_get_irq(struct udma_dev *ud, int udma_rflow_id)
178{
179 const struct udma_oes_offsets *oes = &ud->soc_data->oes;
180
181 return msi_get_virq(ud->dev, udma_rflow_id + oes->pktdma_rchan_flow);
182}
183EXPORT_SYMBOL(xudma_pktdma_rflow_get_irq);
184

source code of linux/drivers/dma/ti/k3-udma-private.c