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https://github.com/brain-hackers/u-boot-brain
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
230 lines
6.4 KiB
C
230 lines
6.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Freescale Layerscape MC I/O wrapper
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*
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* Copyright (C) 2013-2016 Freescale Semiconductor, Inc.
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* Copyright 2017 NXP
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*/
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/*!
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* @file fsl_dpbp.h
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* @brief Data Path Buffer Pool API
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*/
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#ifndef __FSL_DPBP_H
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#define __FSL_DPBP_H
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/* DPBP Version */
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#define DPBP_VER_MAJOR 3
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#define DPBP_VER_MINOR 3
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/* Command IDs */
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#define DPBP_CMDID_CLOSE 0x8001
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#define DPBP_CMDID_OPEN 0x8041
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#define DPBP_CMDID_CREATE 0x9041
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#define DPBP_CMDID_DESTROY 0x9841
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#define DPBP_CMDID_GET_API_VERSION 0xa041
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#define DPBP_CMDID_ENABLE 0x0021
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#define DPBP_CMDID_DISABLE 0x0031
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#define DPBP_CMDID_GET_ATTR 0x0041
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#define DPBP_CMDID_RESET 0x0051
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#define DPBP_CMDID_IS_ENABLED 0x0061
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/* cmd, param, offset, width, type, arg_name */
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#define DPBP_CMD_OPEN(cmd, dpbp_id) \
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MC_CMD_OP(cmd, 0, 0, 32, int, dpbp_id)
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/* cmd, param, offset, width, type, arg_name */
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#define DPBP_RSP_GET_ATTRIBUTES(cmd, attr) \
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do { \
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MC_RSP_OP(cmd, 0, 16, 16, uint16_t, attr->bpid); \
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MC_RSP_OP(cmd, 0, 32, 32, int, attr->id);\
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} while (0)
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/* Data Path Buffer Pool API
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* Contains initialization APIs and runtime control APIs for DPBP
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*/
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struct fsl_mc_io;
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/**
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* dpbp_open() - Open a control session for the specified object.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @dpbp_id: DPBP unique ID
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* @token: Returned token; use in subsequent API calls
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*
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* This function can be used to open a control session for an
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* already created object; an object may have been declared in
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* the DPL or by calling the dpbp_create function.
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* This function returns a unique authentication token,
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* associated with the specific object ID and the specific MC
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* portal; this token must be used in all subsequent commands for
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* this specific object
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_open(struct fsl_mc_io *mc_io,
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uint32_t cmd_flags,
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int dpbp_id,
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uint16_t *token);
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/**
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* dpbp_close() - Close the control session of the object
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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*
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* After this function is called, no further operations are
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* allowed on the object without opening a new control session.
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_close(struct fsl_mc_io *mc_io,
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uint32_t cmd_flags,
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uint16_t token);
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/**
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* struct dpbp_cfg - Structure representing DPBP configuration
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* @options: place holder
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*/
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struct dpbp_cfg {
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uint32_t options;
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};
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/**
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* dpbp_create() - Create the DPBP object.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @cfg: Configuration structure
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* @token: Returned token; use in subsequent API calls
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*
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* Create the DPBP object, allocate required resources and
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* perform required initialization.
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*
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* The object can be created either by declaring it in the
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* DPL file, or by calling this function.
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* This function returns a unique authentication token,
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* associated with the specific object ID and the specific MC
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* portal; this token must be used in all subsequent calls to
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* this specific object. For objects that are created using the
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* DPL file, call dpbp_open function to get an authentication
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* token first.
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_create(struct fsl_mc_io *mc_io,
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uint16_t dprc_token,
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uint32_t cmd_flags,
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const struct dpbp_cfg *cfg,
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uint32_t *obj_id);
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/**
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* dpbp_destroy() - Destroy the DPBP object and release all its resources.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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*
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* Return: '0' on Success; error code otherwise.
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*/
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int dpbp_destroy(struct fsl_mc_io *mc_io,
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uint16_t dprc_token,
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uint32_t cmd_flags,
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uint32_t obj_id);
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/**
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* dpbp_enable() - Enable the DPBP.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_enable(struct fsl_mc_io *mc_io,
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uint32_t cmd_flags,
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uint16_t token);
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/**
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* dpbp_disable() - Disable the DPBP.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_disable(struct fsl_mc_io *mc_io,
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uint32_t cmd_flags,
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uint16_t token);
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/**
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* dpbp_is_enabled() - Check if the DPBP is enabled.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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* @en: Returns '1' if object is enabled; '0' otherwise
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_is_enabled(struct fsl_mc_io *mc_io,
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uint32_t cmd_flags,
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uint16_t token,
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int *en);
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/**
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* dpbp_reset() - Reset the DPBP, returns the object to initial state.
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_reset(struct fsl_mc_io *mc_io,
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uint32_t cmd_flags,
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uint16_t token);
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/**
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* struct dpbp_attr - Structure representing DPBP attributes
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* @id: DPBP object ID
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* @version: DPBP version
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* @bpid: Hardware buffer pool ID; should be used as an argument in
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* acquire/release operations on buffers
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*/
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struct dpbp_attr {
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uint32_t id;
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uint16_t bpid;
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};
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/**
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* dpbp_get_attributes - Retrieve DPBP attributes.
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*
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @token: Token of DPBP object
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* @attr: Returned object's attributes
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_get_attributes(struct fsl_mc_io *mc_io,
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uint32_t cmd_flags,
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uint16_t token,
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struct dpbp_attr *attr);
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/**
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* dpbp_get_api_version - Retrieve DPBP Major and Minor version info.
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*
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* @mc_io: Pointer to MC portal's I/O object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @major_ver: DPBP major version
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* @minor_ver: DPBP minor version
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpbp_get_api_version(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 *major_ver,
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u16 *minor_ver);
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/** @} */
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#endif /* __FSL_DPBP_H */
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