drivers/bus/fslmc/mc/fsl_dpbp.h

   1 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
   2  *
   3  * Copyright 2013-2016 Freescale Semiconductor Inc.
   4  * Copyright 2016-2017 NXP
   5  *
   6  */
   7 #ifndef __FSL_DPBP_H
   8 #define __FSL_DPBP_H
   9
  10 /*
  11  * Data Path Buffer Pool API
  12  * Contains initialization APIs and runtime control APIs for DPBP
  13  */
  14
  15 struct fsl_mc_io;
  16
  17 int dpbp_open(struct fsl_mc_io *mc_io,
  18               uint32_t cmd_flags,
  19               int dpbp_id,
  20               uint16_t *token);
  21
  22 int dpbp_close(struct fsl_mc_io *mc_io,
  23                uint32_t cmd_flags,
  24                uint16_t token);
  25
  26 /**
  27  * struct dpbp_cfg - Structure representing DPBP configuration
  28  * @options:    place holder
  29  */
  30 struct dpbp_cfg {
  31         uint32_t options;
  32 };
  33
  34 int dpbp_create(struct fsl_mc_io *mc_io,
  35                 uint16_t dprc_token,
  36                 uint32_t cmd_flags,
  37                 const struct dpbp_cfg *cfg,
  38                 uint32_t *obj_id);
  39
  40 int dpbp_destroy(struct fsl_mc_io *mc_io,
  41                  uint16_t dprc_token,
  42                  uint32_t cmd_flags,
  43                  uint32_t obj_id);
  44
  45 int dpbp_enable(struct fsl_mc_io *mc_io,
  46                 uint32_t cmd_flags,
  47                 uint16_t token);
  48
  49 int dpbp_disable(struct fsl_mc_io *mc_io,
  50                  uint32_t cmd_flags,
  51                  uint16_t token);
  52
  53 int dpbp_is_enabled(struct fsl_mc_io *mc_io,
  54                     uint32_t cmd_flags,
  55                     uint16_t token,
  56                     int *en);
  57
  58 int dpbp_reset(struct fsl_mc_io *mc_io,
  59                uint32_t cmd_flags,
  60                uint16_t token);
  61
  62 /**
  63  * struct dpbp_attr - Structure representing DPBP attributes
  64  * @id:         DPBP object ID
  65  * @bpid:       Hardware buffer pool ID; should be used as an argument in
  66  *              acquire/release operations on buffers
  67  */
  68 struct dpbp_attr {
  69         int id;
  70         uint16_t bpid;
  71 };
  72
  73 int dpbp_get_attributes(struct fsl_mc_io *mc_io,
  74                         uint32_t cmd_flags,
  75                         uint16_t token,
  76                         struct dpbp_attr *attr);
  77
  78 /**
  79  *  DPBP notifications options
  80  */
  81
  82 /**
  83  * BPSCN write will attempt to allocate into a cache (coherent write)
  84  */
  85 int dpbp_get_api_version(struct fsl_mc_io *mc_io,
  86                          uint32_t cmd_flags,
  87                          uint16_t *major_ver,
  88                          uint16_t *minor_ver);
  89
  90 int dpbp_get_num_free_bufs(struct fsl_mc_io *mc_io,
  91                            uint32_t cmd_flags,
  92                            uint16_t token,
  93                            uint32_t *num_free_bufs);
  94
  95 #endif /* __FSL_DPBP_H */