Linux 6.9-rc1
[linux-2.6-microblaze.git] / drivers / dma / fsl-dpaa2-qdma / dpdmai.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright 2019 NXP */
3
4 #ifndef __FSL_DPDMAI_H
5 #define __FSL_DPDMAI_H
6
7 /* DPDMAI Version */
8 #define DPDMAI_VER_MAJOR        2
9 #define DPDMAI_VER_MINOR        2
10
11 #define DPDMAI_CMD_BASE_VERSION 0
12 #define DPDMAI_CMD_ID_OFFSET    4
13
14 #define DPDMAI_CMDID_FORMAT(x)  (((x) << DPDMAI_CMD_ID_OFFSET) | \
15                                 DPDMAI_CMD_BASE_VERSION)
16
17 /* Command IDs */
18 #define DPDMAI_CMDID_CLOSE              DPDMAI_CMDID_FORMAT(0x800)
19 #define DPDMAI_CMDID_OPEN               DPDMAI_CMDID_FORMAT(0x80E)
20 #define DPDMAI_CMDID_CREATE             DPDMAI_CMDID_FORMAT(0x90E)
21 #define DPDMAI_CMDID_DESTROY            DPDMAI_CMDID_FORMAT(0x900)
22
23 #define DPDMAI_CMDID_ENABLE             DPDMAI_CMDID_FORMAT(0x002)
24 #define DPDMAI_CMDID_DISABLE            DPDMAI_CMDID_FORMAT(0x003)
25 #define DPDMAI_CMDID_GET_ATTR           DPDMAI_CMDID_FORMAT(0x004)
26 #define DPDMAI_CMDID_RESET              DPDMAI_CMDID_FORMAT(0x005)
27 #define DPDMAI_CMDID_IS_ENABLED         DPDMAI_CMDID_FORMAT(0x006)
28
29 #define DPDMAI_CMDID_SET_IRQ            DPDMAI_CMDID_FORMAT(0x010)
30 #define DPDMAI_CMDID_GET_IRQ            DPDMAI_CMDID_FORMAT(0x011)
31 #define DPDMAI_CMDID_SET_IRQ_ENABLE     DPDMAI_CMDID_FORMAT(0x012)
32 #define DPDMAI_CMDID_GET_IRQ_ENABLE     DPDMAI_CMDID_FORMAT(0x013)
33 #define DPDMAI_CMDID_SET_IRQ_MASK       DPDMAI_CMDID_FORMAT(0x014)
34 #define DPDMAI_CMDID_GET_IRQ_MASK       DPDMAI_CMDID_FORMAT(0x015)
35 #define DPDMAI_CMDID_GET_IRQ_STATUS     DPDMAI_CMDID_FORMAT(0x016)
36 #define DPDMAI_CMDID_CLEAR_IRQ_STATUS   DPDMAI_CMDID_FORMAT(0x017)
37
38 #define DPDMAI_CMDID_SET_RX_QUEUE       DPDMAI_CMDID_FORMAT(0x1A0)
39 #define DPDMAI_CMDID_GET_RX_QUEUE       DPDMAI_CMDID_FORMAT(0x1A1)
40 #define DPDMAI_CMDID_GET_TX_QUEUE       DPDMAI_CMDID_FORMAT(0x1A2)
41
42 #define MC_CMD_HDR_TOKEN_O 32  /* Token field offset */
43 #define MC_CMD_HDR_TOKEN_S 16  /* Token field size */
44
45 #define MAKE_UMASK64(_width) \
46         ((u64)((_width) < 64 ? ((u64)1 << (_width)) - 1 : (u64)-1))
47
48 /* Data Path DMA Interface API
49  * Contains initialization APIs and runtime control APIs for DPDMAI
50  */
51
52 /**
53  * Maximum number of Tx/Rx priorities per DPDMAI object
54  */
55 #define DPDMAI_PRIO_NUM         2
56
57 /* DPDMAI queue modification options */
58
59 /**
60  * Select to modify the user's context associated with the queue
61  */
62 #define DPDMAI_QUEUE_OPT_USER_CTX       0x1
63
64 /**
65  * Select to modify the queue's destination
66  */
67 #define DPDMAI_QUEUE_OPT_DEST           0x2
68
69 /**
70  * struct dpdmai_cfg - Structure representing DPDMAI configuration
71  * @priorities: Priorities for the DMA hardware processing; valid priorities are
72  *      configured with values 1-8; the entry following last valid entry
73  *      should be configured with 0
74  */
75 struct dpdmai_cfg {
76         u8 priorities[DPDMAI_PRIO_NUM];
77 };
78
79 /**
80  * struct dpdmai_attr - Structure representing DPDMAI attributes
81  * @id: DPDMAI object ID
82  * @version: DPDMAI version
83  * @num_of_priorities: number of priorities
84  */
85 struct dpdmai_attr {
86         int     id;
87         /**
88          * struct version - DPDMAI version
89          * @major: DPDMAI major version
90          * @minor: DPDMAI minor version
91          */
92         struct {
93                 u16 major;
94                 u16 minor;
95         } version;
96         u8 num_of_priorities;
97 };
98
99 /**
100  * enum dpdmai_dest - DPDMAI destination types
101  * @DPDMAI_DEST_NONE: Unassigned destination; The queue is set in parked mode
102  *      and does not generate FQDAN notifications; user is expected to dequeue
103  *      from the queue based on polling or other user-defined method
104  * @DPDMAI_DEST_DPIO: The queue is set in schedule mode and generates FQDAN
105  *      notifications to the specified DPIO; user is expected to dequeue
106  *      from the queue only after notification is received
107  * @DPDMAI_DEST_DPCON: The queue is set in schedule mode and does not generate
108  *      FQDAN notifications, but is connected to the specified DPCON object;
109  *      user is expected to dequeue from the DPCON channel
110  */
111 enum dpdmai_dest {
112         DPDMAI_DEST_NONE = 0,
113         DPDMAI_DEST_DPIO = 1,
114         DPDMAI_DEST_DPCON = 2
115 };
116
117 /**
118  * struct dpdmai_dest_cfg - Structure representing DPDMAI destination parameters
119  * @dest_type: Destination type
120  * @dest_id: Either DPIO ID or DPCON ID, depending on the destination type
121  * @priority: Priority selection within the DPIO or DPCON channel; valid values
122  *      are 0-1 or 0-7, depending on the number of priorities in that
123  *      channel; not relevant for 'DPDMAI_DEST_NONE' option
124  */
125 struct dpdmai_dest_cfg {
126         enum dpdmai_dest dest_type;
127         int dest_id;
128         u8 priority;
129 };
130
131 /**
132  * struct dpdmai_rx_queue_cfg - DPDMAI RX queue configuration
133  * @options: Flags representing the suggested modifications to the queue;
134  *      Use any combination of 'DPDMAI_QUEUE_OPT_<X>' flags
135  * @user_ctx: User context value provided in the frame descriptor of each
136  *      dequeued frame;
137  *      valid only if 'DPDMAI_QUEUE_OPT_USER_CTX' is contained in 'options'
138  * @dest_cfg: Queue destination parameters;
139  *      valid only if 'DPDMAI_QUEUE_OPT_DEST' is contained in 'options'
140  */
141 struct dpdmai_rx_queue_cfg {
142         struct dpdmai_dest_cfg dest_cfg;
143         u32 options;
144         u64 user_ctx;
145
146 };
147
148 /**
149  * struct dpdmai_rx_queue_attr - Structure representing attributes of Rx queues
150  * @user_ctx:  User context value provided in the frame descriptor of each
151  *       dequeued frame
152  * @dest_cfg: Queue destination configuration
153  * @fqid: Virtual FQID value to be used for dequeue operations
154  */
155 struct dpdmai_rx_queue_attr {
156         struct dpdmai_dest_cfg  dest_cfg;
157         u64 user_ctx;
158         u32 fqid;
159 };
160
161 int dpdmai_open(struct fsl_mc_io *mc_io, u32 cmd_flags,
162                 int dpdmai_id, u16 *token);
163 int dpdmai_close(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token);
164 int dpdmai_destroy(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token);
165 int dpdmai_create(struct fsl_mc_io *mc_io, u32 cmd_flags,
166                   const struct dpdmai_cfg *cfg, u16 *token);
167 int dpdmai_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token);
168 int dpdmai_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token);
169 int dpdmai_reset(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token);
170 int dpdmai_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags,
171                           u16 token, struct dpdmai_attr *attr);
172 int dpdmai_set_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
173                         u8 priority, const struct dpdmai_rx_queue_cfg *cfg);
174 int dpdmai_get_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
175                         u8 priority, struct dpdmai_rx_queue_attr *attr);
176 int dpdmai_get_tx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags,
177                         u16 token, u8 priority, u32 *fqid);
178
179 #endif /* __FSL_DPDMAI_H */