2 * Freescale Layerscape MC I/O wrapper
4 * Copyright (C) 2013-2015 Freescale Semiconductor, Inc.
5 * Author: German Rivera <German.Rivera@freescale.com>
7 * SPDX-License-Identifier: GPL-2.0+
11 * @brief Data Path Buffer Pool API
17 #define DPBP_VER_MAJOR 2
18 #define DPBP_VER_MINOR 2
21 #define DPBP_CMDID_CLOSE 0x800
22 #define DPBP_CMDID_OPEN 0x804
23 #define DPBP_CMDID_CREATE 0x904
24 #define DPBP_CMDID_DESTROY 0x900
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
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)
35 /* cmd, param, offset, width, type, arg_name */
36 #define DPBP_RSP_GET_ATTRIBUTES(cmd, attr) \
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);\
44 /* Data Path Buffer Pool API
45 * Contains initialization APIs and runtime control APIs for DPBP
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
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
65 * Return: '0' on Success; Error code otherwise.
67 int dpbp_open(struct fsl_mc_io *mc_io,
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
78 * After this function is called, no further operations are
79 * allowed on the object without opening a new control session.
81 * Return: '0' on Success; Error code otherwise.
83 int dpbp_close(struct fsl_mc_io *mc_io,
88 * struct dpbp_cfg - Structure representing DPBP configuration
89 * @options: place holder
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
102 * Create the DPBP object, allocate required resources and
103 * perform required initialization.
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
114 * Return: '0' on Success; Error code otherwise.
116 int dpbp_create(struct fsl_mc_io *mc_io,
118 const struct dpbp_cfg *cfg,
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
127 * Return: '0' on Success; error code otherwise.
129 int dpbp_destroy(struct fsl_mc_io *mc_io,
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
139 * Return: '0' on Success; Error code otherwise.
141 int dpbp_enable(struct fsl_mc_io *mc_io,
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
151 * Return: '0' on Success; Error code otherwise.
153 int dpbp_disable(struct fsl_mc_io *mc_io,
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
164 * Return: '0' on Success; Error code otherwise.
166 int dpbp_is_enabled(struct fsl_mc_io *mc_io,
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
177 * Return: '0' on Success; Error code otherwise.
179 int dpbp_reset(struct fsl_mc_io *mc_io,
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
194 * struct version - Structure representing DPBP version
195 * @major: DPBP major version
196 * @minor: DPBP minor version
206 * dpbp_get_attributes - Retrieve DPBP attributes.
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
213 * Return: '0' on Success; Error code otherwise.
215 int dpbp_get_attributes(struct fsl_mc_io *mc_io,
218 struct dpbp_attr *attr);
222 #endif /* __FSL_DPBP_H */