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