1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com |
4 | */ |
5 | |
6 | #ifndef K3_UDMA_GLUE_H_ |
7 | #define K3_UDMA_GLUE_H_ |
8 | |
9 | #include <linux/types.h> |
10 | #include <linux/soc/ti/k3-ringacc.h> |
11 | #include <linux/dma/ti-cppi5.h> |
12 | |
13 | struct k3_udma_glue_tx_channel_cfg { |
14 | struct k3_ring_cfg tx_cfg; |
15 | struct k3_ring_cfg txcq_cfg; |
16 | |
17 | bool tx_pause_on_err; |
18 | bool tx_filt_einfo; |
19 | bool tx_filt_pswords; |
20 | bool tx_supr_tdpkt; |
21 | u32 swdata_size; |
22 | }; |
23 | |
24 | struct k3_udma_glue_tx_channel; |
25 | |
26 | struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev, |
27 | const char *name, struct k3_udma_glue_tx_channel_cfg *cfg); |
28 | |
29 | void k3_udma_glue_release_tx_chn(struct k3_udma_glue_tx_channel *tx_chn); |
30 | int k3_udma_glue_push_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, |
31 | struct cppi5_host_desc_t *desc_tx, |
32 | dma_addr_t desc_dma); |
33 | int k3_udma_glue_pop_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, |
34 | dma_addr_t *desc_dma); |
35 | int k3_udma_glue_enable_tx_chn(struct k3_udma_glue_tx_channel *tx_chn); |
36 | void k3_udma_glue_disable_tx_chn(struct k3_udma_glue_tx_channel *tx_chn); |
37 | void k3_udma_glue_tdown_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, |
38 | bool sync); |
39 | void k3_udma_glue_reset_tx_chn(struct k3_udma_glue_tx_channel *tx_chn, |
40 | void *data, void (*cleanup)(void *data, dma_addr_t desc_dma)); |
41 | u32 k3_udma_glue_tx_get_hdesc_size(struct k3_udma_glue_tx_channel *tx_chn); |
42 | u32 k3_udma_glue_tx_get_txcq_id(struct k3_udma_glue_tx_channel *tx_chn); |
43 | int k3_udma_glue_tx_get_irq(struct k3_udma_glue_tx_channel *tx_chn); |
44 | struct device * |
45 | k3_udma_glue_tx_get_dma_device(struct k3_udma_glue_tx_channel *tx_chn); |
46 | void k3_udma_glue_tx_dma_to_cppi5_addr(struct k3_udma_glue_tx_channel *tx_chn, |
47 | dma_addr_t *addr); |
48 | void k3_udma_glue_tx_cppi5_to_dma_addr(struct k3_udma_glue_tx_channel *tx_chn, |
49 | dma_addr_t *addr); |
50 | |
51 | enum { |
52 | K3_UDMA_GLUE_SRC_TAG_LO_KEEP = 0, |
53 | K3_UDMA_GLUE_SRC_TAG_LO_USE_FLOW_REG = 1, |
54 | K3_UDMA_GLUE_SRC_TAG_LO_USE_REMOTE_FLOW_ID = 2, |
55 | K3_UDMA_GLUE_SRC_TAG_LO_USE_REMOTE_SRC_TAG = 4, |
56 | }; |
57 | |
58 | /** |
59 | * k3_udma_glue_rx_flow_cfg - UDMA RX flow cfg |
60 | * |
61 | * @rx_cfg: RX ring configuration |
62 | * @rxfdq_cfg: RX free Host PD ring configuration |
63 | * @ring_rxq_id: RX ring id (or -1 for any) |
64 | * @ring_rxfdq0_id: RX free Host PD ring (FDQ) if (or -1 for any) |
65 | * @rx_error_handling: Rx Error Handling Mode (0 - drop, 1 - re-try) |
66 | * @src_tag_lo_sel: Rx Source Tag Low Byte Selector in Host PD |
67 | */ |
68 | struct k3_udma_glue_rx_flow_cfg { |
69 | struct k3_ring_cfg rx_cfg; |
70 | struct k3_ring_cfg rxfdq_cfg; |
71 | int ring_rxq_id; |
72 | int ring_rxfdq0_id; |
73 | bool rx_error_handling; |
74 | int src_tag_lo_sel; |
75 | }; |
76 | |
77 | /** |
78 | * k3_udma_glue_rx_channel_cfg - UDMA RX channel cfg |
79 | * |
80 | * @psdata_size: SW Data is present in Host PD of @swdata_size bytes |
81 | * @flow_id_base: first flow_id used by channel. |
82 | * if @flow_id_base = -1 - range of GP rflows will be |
83 | * allocated dynamically. |
84 | * @flow_id_num: number of RX flows used by channel |
85 | * @flow_id_use_rxchan_id: use RX channel id as flow id, |
86 | * used only if @flow_id_num = 1 |
87 | * @remote indication that RX channel is remote - some remote CPU |
88 | * core owns and control the RX channel. Linux Host only |
89 | * allowed to attach and configure RX Flow within RX |
90 | * channel. if set - not RX channel operation will be |
91 | * performed by K3 NAVSS DMA glue interface. |
92 | * @def_flow_cfg default RX flow configuration, |
93 | * used only if @flow_id_num = 1 |
94 | */ |
95 | struct k3_udma_glue_rx_channel_cfg { |
96 | u32 swdata_size; |
97 | int flow_id_base; |
98 | int flow_id_num; |
99 | bool flow_id_use_rxchan_id; |
100 | bool remote; |
101 | |
102 | struct k3_udma_glue_rx_flow_cfg *def_flow_cfg; |
103 | }; |
104 | |
105 | struct k3_udma_glue_rx_channel; |
106 | |
107 | struct k3_udma_glue_rx_channel *k3_udma_glue_request_rx_chn( |
108 | struct device *dev, |
109 | const char *name, |
110 | struct k3_udma_glue_rx_channel_cfg *cfg); |
111 | |
112 | void k3_udma_glue_release_rx_chn(struct k3_udma_glue_rx_channel *rx_chn); |
113 | int k3_udma_glue_enable_rx_chn(struct k3_udma_glue_rx_channel *rx_chn); |
114 | void k3_udma_glue_disable_rx_chn(struct k3_udma_glue_rx_channel *rx_chn); |
115 | void k3_udma_glue_tdown_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, |
116 | bool sync); |
117 | int k3_udma_glue_push_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, |
118 | u32 flow_num, struct cppi5_host_desc_t *desc_tx, |
119 | dma_addr_t desc_dma); |
120 | int k3_udma_glue_pop_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, |
121 | u32 flow_num, dma_addr_t *desc_dma); |
122 | int k3_udma_glue_rx_flow_init(struct k3_udma_glue_rx_channel *rx_chn, |
123 | u32 flow_idx, struct k3_udma_glue_rx_flow_cfg *flow_cfg); |
124 | u32 k3_udma_glue_rx_flow_get_fdq_id(struct k3_udma_glue_rx_channel *rx_chn, |
125 | u32 flow_idx); |
126 | u32 k3_udma_glue_rx_get_flow_id_base(struct k3_udma_glue_rx_channel *rx_chn); |
127 | int k3_udma_glue_rx_get_irq(struct k3_udma_glue_rx_channel *rx_chn, |
128 | u32 flow_num); |
129 | void k3_udma_glue_rx_put_irq(struct k3_udma_glue_rx_channel *rx_chn, |
130 | u32 flow_num); |
131 | void k3_udma_glue_reset_rx_chn(struct k3_udma_glue_rx_channel *rx_chn, |
132 | u32 flow_num, void *data, |
133 | void (*cleanup)(void *data, dma_addr_t desc_dma), |
134 | bool skip_fdq); |
135 | int k3_udma_glue_rx_flow_enable(struct k3_udma_glue_rx_channel *rx_chn, |
136 | u32 flow_idx); |
137 | int k3_udma_glue_rx_flow_disable(struct k3_udma_glue_rx_channel *rx_chn, |
138 | u32 flow_idx); |
139 | struct device * |
140 | k3_udma_glue_rx_get_dma_device(struct k3_udma_glue_rx_channel *rx_chn); |
141 | void k3_udma_glue_rx_dma_to_cppi5_addr(struct k3_udma_glue_rx_channel *rx_chn, |
142 | dma_addr_t *addr); |
143 | void k3_udma_glue_rx_cppi5_to_dma_addr(struct k3_udma_glue_rx_channel *rx_chn, |
144 | dma_addr_t *addr); |
145 | |
146 | #endif /* K3_UDMA_GLUE_H_ */ |
147 | |