/* * Freescale Layerscape MC I/O wrapper * * Copyright (C) 2013-2015 Freescale Semiconductor, Inc. * Author: German Rivera <German.Rivera@freescale.com> * * SPDX-License-Identifier: GPL-2.0+ */ /*! * @file fsl_dpbp.h * @brief Data Path Buffer Pool API */ #ifndef __FSL_DPBP_H #define __FSL_DPBP_H /* DPBP Version */ #define DPBP_VER_MAJOR 2 #define DPBP_VER_MINOR 2 /* Command IDs */ #define DPBP_CMDID_CLOSE 0x800 #define DPBP_CMDID_OPEN 0x804 #define DPBP_CMDID_CREATE 0x904 #define DPBP_CMDID_DESTROY 0x900 #define DPBP_CMDID_ENABLE 0x002 #define DPBP_CMDID_DISABLE 0x003 #define DPBP_CMDID_GET_ATTR 0x004 #define DPBP_CMDID_RESET 0x005 /* cmd, param, offset, width, type, arg_name */ #define DPBP_CMD_OPEN(cmd, dpbp_id) \ MC_CMD_OP(cmd, 0, 0, 32, int, dpbp_id) /* cmd, param, offset, width, type, arg_name */ #define DPBP_RSP_GET_ATTRIBUTES(cmd, attr) \ do { \ MC_RSP_OP(cmd, 0, 16, 16, uint16_t, attr->bpid); \ MC_RSP_OP(cmd, 0, 32, 32, int, attr->id);\ MC_RSP_OP(cmd, 1, 0, 16, uint16_t, attr->version.major);\ MC_RSP_OP(cmd, 1, 16, 16, uint16_t, attr->version.minor);\ } while (0) /* Data Path Buffer Pool API * Contains initialization APIs and runtime control APIs for DPBP */ struct fsl_mc_io; /** * dpbp_open() - Open a control session for the specified object. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @dpbp_id: DPBP unique ID * @token: Returned token; use in subsequent API calls * * This function can be used to open a control session for an * already created object; an object may have been declared in * the DPL or by calling the dpbp_create function. * This function returns a unique authentication token, * associated with the specific object ID and the specific MC * portal; this token must be used in all subsequent commands for * this specific object * * Return: '0' on Success; Error code otherwise. */ int dpbp_open(struct fsl_mc_io *mc_io, uint32_t cmd_flags, int dpbp_id, uint16_t *token); /** * dpbp_close() - Close the control session of the object * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPBP object * * After this function is called, no further operations are * allowed on the object without opening a new control session. * * Return: '0' on Success; Error code otherwise. */ int dpbp_close(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token); /** * struct dpbp_cfg - Structure representing DPBP configuration * @options: place holder */ struct dpbp_cfg { uint32_t options; }; /** * dpbp_create() - Create the DPBP object. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @cfg: Configuration structure * @token: Returned token; use in subsequent API calls * * Create the DPBP object, allocate required resources and * perform required initialization. * * The object can be created either by declaring it in the * DPL file, or by calling this function. * This function returns a unique authentication token, * associated with the specific object ID and the specific MC * portal; this token must be used in all subsequent calls to * this specific object. For objects that are created using the * DPL file, call dpbp_open function to get an authentication * token first. * * Return: '0' on Success; Error code otherwise. */ int dpbp_create(struct fsl_mc_io *mc_io, uint32_t cmd_flags, const struct dpbp_cfg *cfg, uint16_t *token); /** * dpbp_destroy() - Destroy the DPBP object and release all its resources. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPBP object * * Return: '0' on Success; error code otherwise. */ int dpbp_destroy(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token); /** * dpbp_enable() - Enable the DPBP. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPBP object * * Return: '0' on Success; Error code otherwise. */ int dpbp_enable(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token); /** * dpbp_disable() - Disable the DPBP. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPBP object * * Return: '0' on Success; Error code otherwise. */ int dpbp_disable(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token); /** * dpbp_is_enabled() - Check if the DPBP is enabled. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPBP object * @en: Returns '1' if object is enabled; '0' otherwise * * Return: '0' on Success; Error code otherwise. */ int dpbp_is_enabled(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, int *en); /** * dpbp_reset() - Reset the DPBP, returns the object to initial state. * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPBP object * * Return: '0' on Success; Error code otherwise. */ int dpbp_reset(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token); /** * struct dpbp_attr - Structure representing DPBP attributes * @id: DPBP object ID * @version: DPBP version * @bpid: Hardware buffer pool ID; should be used as an argument in * acquire/release operations on buffers */ struct dpbp_attr { int id; /** * struct version - Structure representing DPBP version * @major: DPBP major version * @minor: DPBP minor version */ struct { uint16_t major; uint16_t minor; } version; uint16_t bpid; }; /** * dpbp_get_attributes - Retrieve DPBP attributes. * * @mc_io: Pointer to MC portal's I/O object * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_' * @token: Token of DPBP object * @attr: Returned object's attributes * * Return: '0' on Success; Error code otherwise. */ int dpbp_get_attributes(struct fsl_mc_io *mc_io, uint32_t cmd_flags, uint16_t token, struct dpbp_attr *attr); /** @} */ #endif /* __FSL_DPBP_H */