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 */