xref: /kernel/linux/linux-6.6/drivers/dma/ti/k3-udma.h (revision 62306a36) 
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 *  Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
4 */
5
6#ifndef K3_UDMA_H_
7#define K3_UDMA_H_
8
9#include <linux/soc/ti/ti_sci_protocol.h>
10
11/* Global registers */
12#define UDMA_REV_REG			0x0
13#define UDMA_PERF_CTL_REG		0x4
14#define UDMA_EMU_CTL_REG		0x8
15#define UDMA_PSIL_TO_REG		0x10
16#define UDMA_UTC_CTL_REG		0x1c
17#define UDMA_CAP_REG(i)			(0x20 + ((i) * 4))
18#define UDMA_RX_FLOW_ID_FW_OES_REG	0x80
19#define UDMA_RX_FLOW_ID_FW_STATUS_REG	0x88
20
21/* BCHANRT/TCHANRT/RCHANRT registers */
22#define UDMA_CHAN_RT_CTL_REG		0x0
23#define UDMA_CHAN_RT_SWTRIG_REG		0x8
24#define UDMA_CHAN_RT_STDATA_REG		0x80
25
26#define UDMA_CHAN_RT_PEER_REG(i)	(0x200 + ((i) * 0x4))
27#define UDMA_CHAN_RT_PEER_STATIC_TR_XY_REG	\
28	UDMA_CHAN_RT_PEER_REG(0)	/* PSI-L: 0x400 */
29#define UDMA_CHAN_RT_PEER_STATIC_TR_Z_REG	\
30	UDMA_CHAN_RT_PEER_REG(1)	/* PSI-L: 0x401 */
31#define UDMA_CHAN_RT_PEER_BCNT_REG		\
32	UDMA_CHAN_RT_PEER_REG(4)	/* PSI-L: 0x404 */
33#define UDMA_CHAN_RT_PEER_RT_EN_REG		\
34	UDMA_CHAN_RT_PEER_REG(8)	/* PSI-L: 0x408 */
35
36#define UDMA_CHAN_RT_PCNT_REG		0x400
37#define UDMA_CHAN_RT_BCNT_REG		0x408
38#define UDMA_CHAN_RT_SBCNT_REG		0x410
39
40/* UDMA_CAP Registers */
41#define UDMA_CAP2_TCHAN_CNT(val)	((val) & 0x1ff)
42#define UDMA_CAP2_ECHAN_CNT(val)	(((val) >> 9) & 0x1ff)
43#define UDMA_CAP2_RCHAN_CNT(val)	(((val) >> 18) & 0x1ff)
44#define UDMA_CAP3_RFLOW_CNT(val)	((val) & 0x3fff)
45#define UDMA_CAP3_HCHAN_CNT(val)	(((val) >> 14) & 0x1ff)
46#define UDMA_CAP3_UCHAN_CNT(val)	(((val) >> 23) & 0x1ff)
47
48#define BCDMA_CAP2_BCHAN_CNT(val)	((val) & 0x1ff)
49#define BCDMA_CAP2_TCHAN_CNT(val)	(((val) >> 9) & 0x1ff)
50#define BCDMA_CAP2_RCHAN_CNT(val)	(((val) >> 18) & 0x1ff)
51#define BCDMA_CAP3_HBCHAN_CNT(val)	(((val) >> 14) & 0x1ff)
52#define BCDMA_CAP3_UBCHAN_CNT(val)	(((val) >> 23) & 0x1ff)
53#define BCDMA_CAP4_HRCHAN_CNT(val)	((val) & 0xff)
54#define BCDMA_CAP4_URCHAN_CNT(val)	(((val) >> 8) & 0xff)
55#define BCDMA_CAP4_HTCHAN_CNT(val)	(((val) >> 16) & 0xff)
56#define BCDMA_CAP4_UTCHAN_CNT(val)	(((val) >> 24) & 0xff)
57
58#define PKTDMA_CAP4_TFLOW_CNT(val)	((val) & 0x3fff)
59
60/* UDMA_CHAN_RT_CTL_REG */
61#define UDMA_CHAN_RT_CTL_EN		BIT(31)
62#define UDMA_CHAN_RT_CTL_TDOWN		BIT(30)
63#define UDMA_CHAN_RT_CTL_PAUSE		BIT(29)
64#define UDMA_CHAN_RT_CTL_FTDOWN		BIT(28)
65#define UDMA_CHAN_RT_CTL_ERROR		BIT(0)
66
67/* UDMA_CHAN_RT_PEER_RT_EN_REG */
68#define UDMA_PEER_RT_EN_ENABLE		BIT(31)
69#define UDMA_PEER_RT_EN_TEARDOWN	BIT(30)
70#define UDMA_PEER_RT_EN_PAUSE		BIT(29)
71#define UDMA_PEER_RT_EN_FLUSH		BIT(28)
72#define UDMA_PEER_RT_EN_IDLE		BIT(1)
73
74/*
75 * UDMA_TCHAN_RT_PEER_STATIC_TR_XY_REG /
76 * UDMA_RCHAN_RT_PEER_STATIC_TR_XY_REG
77 */
78#define PDMA_STATIC_TR_X_MASK		GENMASK(26, 24)
79#define PDMA_STATIC_TR_X_SHIFT		(24)
80#define PDMA_STATIC_TR_Y_MASK		GENMASK(11, 0)
81#define PDMA_STATIC_TR_Y_SHIFT		(0)
82
83#define PDMA_STATIC_TR_Y(x)	\
84	(((x) << PDMA_STATIC_TR_Y_SHIFT) & PDMA_STATIC_TR_Y_MASK)
85#define PDMA_STATIC_TR_X(x)	\
86	(((x) << PDMA_STATIC_TR_X_SHIFT) & PDMA_STATIC_TR_X_MASK)
87
88#define PDMA_STATIC_TR_XY_ACC32		BIT(30)
89#define PDMA_STATIC_TR_XY_BURST		BIT(31)
90
91/*
92 * UDMA_TCHAN_RT_PEER_STATIC_TR_Z_REG /
93 * UDMA_RCHAN_RT_PEER_STATIC_TR_Z_REG
94 */
95#define PDMA_STATIC_TR_Z(x, mask)	((x) & (mask))
96
97/* Address Space Select */
98#define K3_ADDRESS_ASEL_SHIFT		48
99
100struct udma_dev;
101struct udma_tchan;
102struct udma_rchan;
103struct udma_rflow;
104
105enum udma_rm_range {
106	RM_RANGE_BCHAN = 0,
107	RM_RANGE_TCHAN,
108	RM_RANGE_RCHAN,
109	RM_RANGE_RFLOW,
110	RM_RANGE_TFLOW,
111	RM_RANGE_LAST,
112};
113
114struct udma_tisci_rm {
115	const struct ti_sci_handle *tisci;
116	const struct ti_sci_rm_udmap_ops *tisci_udmap_ops;
117	u32  tisci_dev_id;
118
119	/* tisci information for PSI-L thread pairing/unpairing */
120	const struct ti_sci_rm_psil_ops *tisci_psil_ops;
121	u32  tisci_navss_dev_id;
122
123	struct ti_sci_resource *rm_ranges[RM_RANGE_LAST];
124};
125
126/* Direct access to UDMA low lever resources for the glue layer */
127int xudma_navss_psil_pair(struct udma_dev *ud, u32 src_thread, u32 dst_thread);
128int xudma_navss_psil_unpair(struct udma_dev *ud, u32 src_thread,
129			    u32 dst_thread);
130
131struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property);
132struct device *xudma_get_device(struct udma_dev *ud);
133struct k3_ringacc *xudma_get_ringacc(struct udma_dev *ud);
134void xudma_dev_put(struct udma_dev *ud);
135u32 xudma_dev_get_psil_base(struct udma_dev *ud);
136struct udma_tisci_rm *xudma_dev_get_tisci_rm(struct udma_dev *ud);
137
138int xudma_alloc_gp_rflow_range(struct udma_dev *ud, int from, int cnt);
139int xudma_free_gp_rflow_range(struct udma_dev *ud, int from, int cnt);
140
141struct udma_tchan *xudma_tchan_get(struct udma_dev *ud, int id);
142struct udma_rchan *xudma_rchan_get(struct udma_dev *ud, int id);
143struct udma_rflow *xudma_rflow_get(struct udma_dev *ud, int id);
144
145void xudma_tchan_put(struct udma_dev *ud, struct udma_tchan *p);
146void xudma_rchan_put(struct udma_dev *ud, struct udma_rchan *p);
147void xudma_rflow_put(struct udma_dev *ud, struct udma_rflow *p);
148
149int xudma_tchan_get_id(struct udma_tchan *p);
150int xudma_rchan_get_id(struct udma_rchan *p);
151int xudma_rflow_get_id(struct udma_rflow *p);
152
153u32 xudma_tchanrt_read(struct udma_tchan *tchan, int reg);
154void xudma_tchanrt_write(struct udma_tchan *tchan, int reg, u32 val);
155u32 xudma_rchanrt_read(struct udma_rchan *rchan, int reg);
156void xudma_rchanrt_write(struct udma_rchan *rchan, int reg, u32 val);
157bool xudma_rflow_is_gp(struct udma_dev *ud, int id);
158int xudma_get_rflow_ring_offset(struct udma_dev *ud);
159
160int xudma_is_pktdma(struct udma_dev *ud);
161
162int xudma_pktdma_tflow_get_irq(struct udma_dev *ud, int udma_tflow_id);
163int xudma_pktdma_rflow_get_irq(struct udma_dev *ud, int udma_rflow_id);
164#endif /* K3_UDMA_H_ */
165