include/fsl-mc/fsl_dpbp.h

   1 /*
   2  * Freescale Layerscape MC I/O wrapper
   3  *
   4  * Copyright (C) 2013-2015 Freescale Semiconductor, Inc.
   5  * Author: German Rivera <German.Rivera@freescale.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9 /*!
  10  *  @file    fsl_dpbp.h
  11  *  @brief   Data Path Buffer Pool API
  12  */
  13 #ifndef __FSL_DPBP_H
  14 #define __FSL_DPBP_H
  15
  16 /* DPBP Version */
  17 #define DPBP_VER_MAJOR                          2
  18 #define DPBP_VER_MINOR                          2
  19
  20 /* Command IDs */
  21 #define DPBP_CMDID_CLOSE                                0x800
  22 #define DPBP_CMDID_OPEN                                 0x804
  23 #define DPBP_CMDID_CREATE                               0x904
  24 #define DPBP_CMDID_DESTROY                              0x900
  25
  26 #define DPBP_CMDID_ENABLE                               0x002
  27 #define DPBP_CMDID_DISABLE                              0x003
  28 #define DPBP_CMDID_GET_ATTR                             0x004
  29 #define DPBP_CMDID_RESET                                0x005
  30
  31 /*                cmd, param, offset, width, type, arg_name */
  32 #define DPBP_CMD_OPEN(cmd, dpbp_id) \
  33         MC_CMD_OP(cmd, 0, 0,  32, int,      dpbp_id)
  34
  35 /*                cmd, param, offset, width, type, arg_name */
  36 #define DPBP_RSP_GET_ATTRIBUTES(cmd, attr) \
  37 do { \
  38         MC_RSP_OP(cmd, 0, 16, 16, uint16_t, attr->bpid); \
  39         MC_RSP_OP(cmd, 0, 32, 32, int,      attr->id);\
  40         MC_RSP_OP(cmd, 1, 0,  16, uint16_t, attr->version.major);\
  41         MC_RSP_OP(cmd, 1, 16, 16, uint16_t, attr->version.minor);\
  42 } while (0)
  43
  44 /* Data Path Buffer Pool API
  45  * Contains initialization APIs and runtime control APIs for DPBP
  46  */
  47
  48 struct fsl_mc_io;
  49
  50 /**
  51  * dpbp_open() - Open a control session for the specified object.
  52  * @mc_io:      Pointer to MC portal's I/O object
  53  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
  54  * @dpbp_id:    DPBP unique ID
  55  * @token:      Returned token; use in subsequent API calls
  56  *
  57  * This function can be used to open a control session for an
  58  * already created object; an object may have been declared in
  59  * the DPL or by calling the dpbp_create function.
  60  * This function returns a unique authentication token,
  61  * associated with the specific object ID and the specific MC
  62  * portal; this token must be used in all subsequent commands for
  63  * this specific object
  64  *
  65  * Return:      '0' on Success; Error code otherwise.
  66  */
  67 int dpbp_open(struct fsl_mc_io  *mc_io,
  68               uint32_t          cmd_flags,
  69               int               dpbp_id,
  70               uint16_t          *token);
  71
  72 /**
  73  * dpbp_close() - Close the control session of the object
  74  * @mc_io:      Pointer to MC portal's I/O object
  75  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
  76  * @token:      Token of DPBP object
  77  *
  78  * After this function is called, no further operations are
  79  * allowed on the object without opening a new control session.
  80  *
  81  * Return:      '0' on Success; Error code otherwise.
  82  */
  83 int dpbp_close(struct fsl_mc_io *mc_io,
  84                uint32_t         cmd_flags,
  85                uint16_t token);
  86
  87 /**
  88  * struct dpbp_cfg - Structure representing DPBP configuration
  89  * @options:    place holder
  90  */
  91 struct dpbp_cfg {
  92         uint32_t options;
  93 };
  94
  95 /**
  96  * dpbp_create() - Create the DPBP object.
  97  * @mc_io:      Pointer to MC portal's I/O object
  98  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
  99  * @cfg:        Configuration structure
 100  * @token:      Returned token; use in subsequent API calls
 101  *
 102  * Create the DPBP object, allocate required resources and
 103  * perform required initialization.
 104  *
 105  * The object can be created either by declaring it in the
 106  * DPL file, or by calling this function.
 107  * This function returns a unique authentication token,
 108  * associated with the specific object ID and the specific MC
 109  * portal; this token must be used in all subsequent calls to
 110  * this specific object. For objects that are created using the
 111  * DPL file, call dpbp_open function to get an authentication
 112  * token first.
 113  *
 114  * Return:      '0' on Success; Error code otherwise.
 115  */
 116 int dpbp_create(struct fsl_mc_io        *mc_io,
 117                 uint32_t                cmd_flags,
 118                 const struct dpbp_cfg   *cfg,
 119                 uint16_t                *token);
 120
 121 /**
 122  * dpbp_destroy() - Destroy the DPBP object and release all its resources.
 123  * @mc_io:      Pointer to MC portal's I/O object
 124  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 125  * @token:      Token of DPBP object
 126  *
 127  * Return:      '0' on Success; error code otherwise.
 128  */
 129 int dpbp_destroy(struct fsl_mc_io       *mc_io,
 130                  uint32_t               cmd_flags,
 131                  uint16_t               token);
 132
 133 /**
 134  * dpbp_enable() - Enable the DPBP.
 135  * @mc_io:      Pointer to MC portal's I/O object
 136  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 137  * @token:      Token of DPBP object
 138  *
 139  * Return:      '0' on Success; Error code otherwise.
 140  */
 141 int dpbp_enable(struct fsl_mc_io        *mc_io,
 142                 uint32_t                cmd_flags,
 143                 uint16_t                token);
 144
 145 /**
 146  * dpbp_disable() - Disable the DPBP.
 147  * @mc_io:      Pointer to MC portal's I/O object
 148  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 149  * @token:      Token of DPBP object
 150  *
 151  * Return:      '0' on Success; Error code otherwise.
 152  */
 153 int dpbp_disable(struct fsl_mc_io       *mc_io,
 154                  uint32_t               cmd_flags,
 155                  uint16_t               token);
 156
 157 /**
 158  * dpbp_is_enabled() - Check if the DPBP is enabled.
 159  * @mc_io:      Pointer to MC portal's I/O object
 160  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 161  * @token:      Token of DPBP object
 162  * @en:         Returns '1' if object is enabled; '0' otherwise
 163  *
 164  * Return:      '0' on Success; Error code otherwise.
 165  */
 166 int dpbp_is_enabled(struct fsl_mc_io    *mc_io,
 167                     uint32_t            cmd_flags,
 168                     uint16_t            token,
 169                     int         *en);
 170
 171 /**
 172  * dpbp_reset() - Reset the DPBP, returns the object to initial state.
 173  * @mc_io:      Pointer to MC portal's I/O object
 174  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 175  * @token:      Token of DPBP object
 176  *
 177  * Return:      '0' on Success; Error code otherwise.
 178  */
 179 int dpbp_reset(struct fsl_mc_io *mc_io,
 180                uint32_t         cmd_flags,
 181                uint16_t token);
 182
 183
 184 /**
 185  * struct dpbp_attr - Structure representing DPBP attributes
 186  * @id:         DPBP object ID
 187  * @version:    DPBP version
 188  * @bpid:       Hardware buffer pool ID; should be used as an argument in
 189  *              acquire/release operations on buffers
 190  */
 191 struct dpbp_attr {
 192         int id;
 193         /**
 194          * struct version - Structure representing DPBP version
 195          * @major:      DPBP major version
 196          * @minor:      DPBP minor version
 197          */
 198         struct {
 199                 uint16_t major;
 200                 uint16_t minor;
 201         } version;
 202         uint16_t bpid;
 203 };
 204
 205 /**
 206  * dpbp_get_attributes - Retrieve DPBP attributes.
 207  *
 208  * @mc_io:      Pointer to MC portal's I/O object
 209  * @cmd_flags:  Command flags; one or more of 'MC_CMD_FLAG_'
 210  * @token:      Token of DPBP object
 211  * @attr:       Returned object's attributes
 212  *
 213  * Return:      '0' on Success; Error code otherwise.
 214  */
 215 int dpbp_get_attributes(struct fsl_mc_io        *mc_io,
 216                         uint32_t        cmd_flags,
 217                         uint16_t                token,
 218                         struct dpbp_attr        *attr);
 219
 220 /** @} */
 221
 222 #endif /* __FSL_DPBP_H */