[linux-2.6-block.git] / drivers / dma / ti / k3-udma.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 *  Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
 */

#ifndef K3_UDMA_H_
#define K3_UDMA_H_

#include <linux/soc/ti/ti_sci_protocol.h>

/* Global registers */
#define UDMA_REV_REG			0x0
#define UDMA_PERF_CTL_REG		0x4
#define UDMA_EMU_CTL_REG		0x8
#define UDMA_PSIL_TO_REG		0x10
#define UDMA_UTC_CTL_REG		0x1c
#define UDMA_CAP_REG(i)			(0x20 + ((i) * 4))
#define UDMA_RX_FLOW_ID_FW_OES_REG	0x80
#define UDMA_RX_FLOW_ID_FW_STATUS_REG	0x88

/* BCHANRT/TCHANRT/RCHANRT registers */
#define UDMA_CHAN_RT_CTL_REG		0x0
#define UDMA_CHAN_RT_SWTRIG_REG		0x8
#define UDMA_CHAN_RT_STDATA_REG		0x80

#define UDMA_CHAN_RT_PEER_REG(i)	(0x200 + ((i) * 0x4))
#define UDMA_CHAN_RT_PEER_STATIC_TR_XY_REG	\
	UDMA_CHAN_RT_PEER_REG(0)	/* PSI-L: 0x400 */
#define UDMA_CHAN_RT_PEER_STATIC_TR_Z_REG	\
	UDMA_CHAN_RT_PEER_REG(1)	/* PSI-L: 0x401 */
#define UDMA_CHAN_RT_PEER_BCNT_REG		\
	UDMA_CHAN_RT_PEER_REG(4)	/* PSI-L: 0x404 */
#define UDMA_CHAN_RT_PEER_RT_EN_REG		\
	UDMA_CHAN_RT_PEER_REG(8)	/* PSI-L: 0x408 */

#define UDMA_CHAN_RT_PCNT_REG		0x400
#define UDMA_CHAN_RT_BCNT_REG		0x408
#define UDMA_CHAN_RT_SBCNT_REG		0x410

/* UDMA_CAP Registers */
#define UDMA_CAP2_TCHAN_CNT(val)	((val) & 0x1ff)
#define UDMA_CAP2_ECHAN_CNT(val)	(((val) >> 9) & 0x1ff)
#define UDMA_CAP2_RCHAN_CNT(val)	(((val) >> 18) & 0x1ff)
#define UDMA_CAP3_RFLOW_CNT(val)	((val) & 0x3fff)
#define UDMA_CAP3_HCHAN_CNT(val)	(((val) >> 14) & 0x1ff)
#define UDMA_CAP3_UCHAN_CNT(val)	(((val) >> 23) & 0x1ff)

#define BCDMA_CAP2_BCHAN_CNT(val)	((val) & 0x1ff)
#define BCDMA_CAP2_TCHAN_CNT(val)	(((val) >> 9) & 0x1ff)
#define BCDMA_CAP2_RCHAN_CNT(val)	(((val) >> 18) & 0x1ff)
#define BCDMA_CAP3_HBCHAN_CNT(val)	(((val) >> 14) & 0x1ff)
#define BCDMA_CAP3_UBCHAN_CNT(val)	(((val) >> 23) & 0x1ff)
#define BCDMA_CAP4_HRCHAN_CNT(val)	((val) & 0xff)
#define BCDMA_CAP4_URCHAN_CNT(val)	(((val) >> 8) & 0xff)
#define BCDMA_CAP4_HTCHAN_CNT(val)	(((val) >> 16) & 0xff)
#define BCDMA_CAP4_UTCHAN_CNT(val)	(((val) >> 24) & 0xff)

#define PKTDMA_CAP4_TFLOW_CNT(val)	((val) & 0x3fff)

/* UDMA_CHAN_RT_CTL_REG */
#define UDMA_CHAN_RT_CTL_EN		BIT(31)
#define UDMA_CHAN_RT_CTL_TDOWN		BIT(30)
#define UDMA_CHAN_RT_CTL_PAUSE		BIT(29)
#define UDMA_CHAN_RT_CTL_FTDOWN		BIT(28)
#define UDMA_CHAN_RT_CTL_ERROR		BIT(0)

/* UDMA_CHAN_RT_PEER_RT_EN_REG */
#define UDMA_PEER_RT_EN_ENABLE		BIT(31)
#define UDMA_PEER_RT_EN_TEARDOWN	BIT(30)
#define UDMA_PEER_RT_EN_PAUSE		BIT(29)
#define UDMA_PEER_RT_EN_FLUSH		BIT(28)
#define UDMA_PEER_RT_EN_IDLE		BIT(1)

/*
 * UDMA_TCHAN_RT_PEER_STATIC_TR_XY_REG /
 * UDMA_RCHAN_RT_PEER_STATIC_TR_XY_REG
 */
#define PDMA_STATIC_TR_X_MASK		GENMASK(26, 24)
#define PDMA_STATIC_TR_X_SHIFT		(24)
#define PDMA_STATIC_TR_Y_MASK		GENMASK(11, 0)
#define PDMA_STATIC_TR_Y_SHIFT		(0)

#define PDMA_STATIC_TR_Y(x)	\
	(((x) << PDMA_STATIC_TR_Y_SHIFT) & PDMA_STATIC_TR_Y_MASK)
#define PDMA_STATIC_TR_X(x)	\
	(((x) << PDMA_STATIC_TR_X_SHIFT) & PDMA_STATIC_TR_X_MASK)

#define PDMA_STATIC_TR_XY_ACC32		BIT(30)
#define PDMA_STATIC_TR_XY_BURST		BIT(31)

/*
 * UDMA_TCHAN_RT_PEER_STATIC_TR_Z_REG /
 * UDMA_RCHAN_RT_PEER_STATIC_TR_Z_REG
 */
#define PDMA_STATIC_TR_Z(x, mask)	((x) & (mask))

/* Address Space Select */
#define K3_ADDRESS_ASEL_SHIFT		48

struct udma_dev;
struct udma_tchan;
struct udma_rchan;
struct udma_rflow;

enum udma_rm_range {
	RM_RANGE_BCHAN = 0,
	RM_RANGE_TCHAN,
	RM_RANGE_RCHAN,
	RM_RANGE_RFLOW,
	RM_RANGE_TFLOW,
	RM_RANGE_LAST,
};

struct udma_tisci_rm {
	const struct ti_sci_handle *tisci;
	const struct ti_sci_rm_udmap_ops *tisci_udmap_ops;
	u32  tisci_dev_id;

	/* tisci information for PSI-L thread pairing/unpairing */
	const struct ti_sci_rm_psil_ops *tisci_psil_ops;
	u32  tisci_navss_dev_id;

	struct ti_sci_resource *rm_ranges[RM_RANGE_LAST];
};

/* Direct access to UDMA low lever resources for the glue layer */
int xudma_navss_psil_pair(struct udma_dev *ud, u32 src_thread, u32 dst_thread);
int xudma_navss_psil_unpair(struct udma_dev *ud, u32 src_thread,
			    u32 dst_thread);

struct udma_dev *of_xudma_dev_get(struct device_node *np, const char *property);
struct device *xudma_get_device(struct udma_dev *ud);
struct k3_ringacc *xudma_get_ringacc(struct udma_dev *ud);
void xudma_dev_put(struct udma_dev *ud);
u32 xudma_dev_get_psil_base(struct udma_dev *ud);
struct udma_tisci_rm *xudma_dev_get_tisci_rm(struct udma_dev *ud);

int xudma_alloc_gp_rflow_range(struct udma_dev *ud, int from, int cnt);
int xudma_free_gp_rflow_range(struct udma_dev *ud, int from, int cnt);

struct udma_tchan *xudma_tchan_get(struct udma_dev *ud, int id);
struct udma_rchan *xudma_rchan_get(struct udma_dev *ud, int id);
struct udma_rflow *xudma_rflow_get(struct udma_dev *ud, int id);

void xudma_tchan_put(struct udma_dev *ud, struct udma_tchan *p);
void xudma_rchan_put(struct udma_dev *ud, struct udma_rchan *p);
void xudma_rflow_put(struct udma_dev *ud, struct udma_rflow *p);

int xudma_tchan_get_id(struct udma_tchan *p);
int xudma_rchan_get_id(struct udma_rchan *p);
int xudma_rflow_get_id(struct udma_rflow *p);

u32 xudma_tchanrt_read(struct udma_tchan *tchan, int reg);
void xudma_tchanrt_write(struct udma_tchan *tchan, int reg, u32 val);
u32 xudma_rchanrt_read(struct udma_rchan *rchan, int reg);
void xudma_rchanrt_write(struct udma_rchan *rchan, int reg, u32 val);
bool xudma_rflow_is_gp(struct udma_dev *ud, int id);
int xudma_get_rflow_ring_offset(struct udma_dev *ud);

int xudma_is_pktdma(struct udma_dev *ud);

int xudma_pktdma_tflow_get_irq(struct udma_dev *ud, int udma_tflow_id);
int xudma_pktdma_rflow_get_irq(struct udma_dev *ud, int udma_rflow_id);
#endif /* K3_UDMA_H_ */
Commit	Line	Data
25dcb5dd PU	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
01779473	21	/* BCHANRT/TCHANRT/RCHANRT registers */
bc7e5523 PU	22	#define UDMA_CHAN_RT_CTL_REG 0x0
	23	#define UDMA_CHAN_RT_SWTRIG_REG 0x8
	24	#define UDMA_CHAN_RT_STDATA_REG 0x80
25dcb5dd	25
bc7e5523 PU	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 */
25dcb5dd	35
bc7e5523 PU	36	#define UDMA_CHAN_RT_PCNT_REG 0x400
	37	#define UDMA_CHAN_RT_BCNT_REG 0x408
	38	#define UDMA_CHAN_RT_SBCNT_REG 0x410
25dcb5dd	39
44385c41 PU	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)
daf4ad04 PU	45	#define UDMA_CAP3_HCHAN_CNT(val) (((val) >> 14) & 0x1ff)
daf4ad04 PU	46	#define UDMA_CAP3_UCHAN_CNT(val) (((val) >> 23) & 0x1ff)
44385c41	47
01779473 PU	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)
88448980 PU	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)
01779473	57
d2abc982 PU	58	#define PKTDMA_CAP4_TFLOW_CNT(val) ((val) & 0x3fff)
d2abc982 PU	59
bc7e5523	60	/* UDMA_CHAN_RT_CTL_REG */
25dcb5dd PU	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
bc7e5523	67	/* UDMA_CHAN_RT_PEER_RT_EN_REG */
25dcb5dd PU	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
01779473 PU	97	/* Address Space Select */
	98	#define K3_ADDRESS_ASEL_SHIFT 48
	99
25dcb5dd PU	100	struct udma_dev;
	101	struct udma_tchan;
	102	struct udma_rchan;
	103	struct udma_rflow;
	104
	105	enum udma_rm_range {
01779473 PU	106	RM_RANGE_BCHAN = 0,
01779473 PU	107	RM_RANGE_TCHAN,
25dcb5dd PU	108	RM_RANGE_RCHAN,
25dcb5dd PU	109	RM_RANGE_RFLOW,
d2abc982	110	RM_RANGE_TFLOW,
25dcb5dd PU	111	RM_RANGE_LAST,
	112	};
	113
	114	struct 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
d7024191 GS	126	/* Direct access to UDMA low lever resources for the glue layer */
	127	int xudma_navss_psil_pair(struct udma_dev *ud, u32 src_thread, u32 dst_thread);
	128	int xudma_navss_psil_unpair(struct udma_dev *ud, u32 src_thread,
	129	u32 dst_thread);
	130
	131	struct udma_dev of_xudma_dev_get(struct device_node np, const char *property);
426506a7	132	struct device xudma_get_device(struct udma_dev ud);
aa8a4c4e	133	struct k3_ringacc xudma_get_ringacc(struct udma_dev ud);
d7024191 GS	134	void xudma_dev_put(struct udma_dev *ud);
	135	u32 xudma_dev_get_psil_base(struct udma_dev *ud);
	136	struct udma_tisci_rm xudma_dev_get_tisci_rm(struct udma_dev ud);
	137
	138	int xudma_alloc_gp_rflow_range(struct udma_dev *ud, int from, int cnt);
	139	int xudma_free_gp_rflow_range(struct udma_dev *ud, int from, int cnt);
	140
	141	struct udma_tchan xudma_tchan_get(struct udma_dev ud, int id);
	142	struct udma_rchan xudma_rchan_get(struct udma_dev ud, int id);
	143	struct udma_rflow xudma_rflow_get(struct udma_dev ud, int id);
	144
	145	void xudma_tchan_put(struct udma_dev ud, struct udma_tchan p);
	146	void xudma_rchan_put(struct udma_dev ud, struct udma_rchan p);
	147	void xudma_rflow_put(struct udma_dev ud, struct udma_rflow p);
	148
	149	int xudma_tchan_get_id(struct udma_tchan *p);
	150	int xudma_rchan_get_id(struct udma_rchan *p);
	151	int xudma_rflow_get_id(struct udma_rflow *p);
	152
	153	u32 xudma_tchanrt_read(struct udma_tchan *tchan, int reg);
	154	void xudma_tchanrt_write(struct udma_tchan *tchan, int reg, u32 val);
	155	u32 xudma_rchanrt_read(struct udma_rchan *rchan, int reg);
	156	void xudma_rchanrt_write(struct udma_rchan *rchan, int reg, u32 val);
	157	bool xudma_rflow_is_gp(struct udma_dev *ud, int id);
d2abc982	158	int xudma_get_rflow_ring_offset(struct udma_dev *ud);
d7024191	159
5b65781d VR	160	int xudma_is_pktdma(struct udma_dev *ud);
	161
	162	int xudma_pktdma_tflow_get_irq(struct udma_dev *ud, int udma_tflow_id);
	163	int xudma_pktdma_rflow_get_irq(struct udma_dev *ud, int udma_rflow_id);
25dcb5dd	164	#endif /* K3_UDMA_H_ */