522 lines
17 KiB
C
522 lines
17 KiB
C
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/* Copyright 2013-2015 Freescale Semiconductor, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the above-listed copyright holders nor the
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* names of any contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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*
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* ALTERNATIVELY, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") as published by the Free Software
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* Foundation, either version 2 of that License or (at your option) any
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* later version.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __FSL_DPDMAI_H
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#define __FSL_DPDMAI_H
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struct fsl_mc_io;
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/* Data Path DMA Interface API
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* Contains initialization APIs and runtime control APIs for DPDMAI
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*/
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/* General DPDMAI macros */
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/**
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* Maximum number of Tx/Rx priorities per DPDMAI object
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*/
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#define DPDMAI_PRIO_NUM 2
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/**
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* All queues considered; see dpdmai_set_rx_queue()
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*/
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#define DPDMAI_ALL_QUEUES (uint8_t)(-1)
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/**
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* dpdmai_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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* @dpdmai_id: DPDMAI 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 dpdmai_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 dpdmai_open(struct fsl_mc_io *mc_io,
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uint32_t cmd_flags,
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int dpdmai_id,
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uint16_t *token);
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/**
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* dpdmai_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 DPDMAI 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 dpdmai_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 dpdmai_cfg - Structure representing DPDMAI configuration
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* @priorities: Priorities for the DMA hardware processing; valid priorities are
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* configured with values 1-8; the entry following last valid entry
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* should be configured with 0
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*/
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struct dpdmai_cfg {
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uint8_t priorities[DPDMAI_PRIO_NUM];
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};
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/**
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* dpdmai_create() - Create the DPDMAI 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 DPDMAI 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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*
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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 dpdmai_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 dpdmai_create(struct fsl_mc_io *mc_io,
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uint32_t cmd_flags,
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const struct dpdmai_cfg *cfg,
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uint16_t *token);
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/**
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* dpdmai_destroy() - Destroy the DPDMAI 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 DPDMAI 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 dpdmai_destroy(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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* dpdmai_enable() - Enable the DPDMAI, allow sending and receiving frames.
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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 DPDMAI 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 dpdmai_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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* dpdmai_disable() - Disable the DPDMAI, stop sending and receiving frames.
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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 DPDMAI 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 dpdmai_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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* dpdmai_is_enabled() - Check if the DPDMAI 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 DPDMAI 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 dpdmai_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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* dpdmai_reset() - Reset the DPDMAI, 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 DPDMAI 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 dpdmai_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 dpdmai_irq_cfg - IRQ configuration
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* @addr: Address that must be written to signal a message-based interrupt
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* @val: Value to write into irq_addr address
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* @irq_num: A user defined number associated with this IRQ
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*/
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struct dpdmai_irq_cfg {
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uint64_t addr;
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uint32_t val;
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int irq_num;
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};
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/**
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* dpdmai_set_irq() - Set IRQ information for the DPDMAI to trigger an interrupt.
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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 DPDMAI object
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* @irq_index: Identifies the interrupt index to configure
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* @irq_cfg: IRQ configuration
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpdmai_set_irq(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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uint8_t irq_index,
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struct dpdmai_irq_cfg *irq_cfg);
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/**
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* dpdmai_get_irq() - Get IRQ information from the DPDMAI
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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 DPDMAI object
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* @irq_index: The interrupt index to configure
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* @type: Interrupt type: 0 represents message interrupt
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* type (both irq_addr and irq_val are valid)
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* @irq_cfg: IRQ 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 dpdmai_get_irq(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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uint8_t irq_index,
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int *type,
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struct dpdmai_irq_cfg *irq_cfg);
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/**
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* dpdmai_set_irq_enable() - Set overall interrupt 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 DPDMAI object
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* @irq_index: The interrupt index to configure
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* @en: Interrupt state - enable = 1, disable = 0
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*
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* Allows GPP software to control when interrupts are generated.
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* Each interrupt can have up to 32 causes. The enable/disable control's the
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* overall interrupt state. if the interrupt is disabled no causes will cause
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* an interrupt
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpdmai_set_irq_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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uint8_t irq_index,
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uint8_t en);
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/**
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* dpdmai_get_irq_enable() - Get overall interrupt 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 DPDMAI object
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* @irq_index: The interrupt index to configure
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* @en: Returned Interrupt state - enable = 1, disable = 0
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpdmai_get_irq_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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uint8_t irq_index,
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uint8_t *en);
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/**
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* dpdmai_set_irq_mask() - Set interrupt mask.
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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 DPDMAI object
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* @irq_index: The interrupt index to configure
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* @mask: event mask to trigger interrupt;
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* each bit:
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* 0 = ignore event
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* 1 = consider event for asserting IRQ
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*
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* Every interrupt can have up to 32 causes and the interrupt model supports
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* masking/unmasking each cause independently
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpdmai_set_irq_mask(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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uint8_t irq_index,
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uint32_t mask);
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/**
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* dpdmai_get_irq_mask() - Get interrupt mask.
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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 DPDMAI object
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* @irq_index: The interrupt index to configure
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* @mask: Returned event mask to trigger interrupt
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*
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* Every interrupt can have up to 32 causes and the interrupt model supports
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* masking/unmasking each cause independently
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpdmai_get_irq_mask(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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uint8_t irq_index,
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uint32_t *mask);
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/**
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* dpdmai_get_irq_status() - Get the current status of any pending interrupts
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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 DPDMAI object
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* @irq_index: The interrupt index to configure
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* @status: Returned interrupts status - one bit per cause:
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* 0 = no interrupt pending
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* 1 = interrupt pending
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpdmai_get_irq_status(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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uint8_t irq_index,
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uint32_t *status);
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/**
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* dpdmai_clear_irq_status() - Clear a pending interrupt's status
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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 DPDMAI object
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* @irq_index: The interrupt index to configure
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* @status: bits to clear (W1C) - one bit per cause:
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* 0 = don't change
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* 1 = clear status bit
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*
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* Return: '0' on Success; Error code otherwise.
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*/
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int dpdmai_clear_irq_status(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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uint8_t irq_index,
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uint32_t status);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct dpdmai_attr - Structure representing DPDMAI attributes
|
||
|
|
* @id: DPDMAI object ID
|
||
|
|
* @version: DPDMAI version
|
||
|
|
* @num_of_priorities: number of priorities
|
||
|
|
*/
|
||
|
|
struct dpdmai_attr {
|
||
|
|
int id;
|
||
|
|
/**
|
||
|
|
* struct version - DPDMAI version
|
||
|
|
* @major: DPDMAI major version
|
||
|
|
* @minor: DPDMAI minor version
|
||
|
|
*/
|
||
|
|
struct {
|
||
|
|
uint16_t major;
|
||
|
|
uint16_t minor;
|
||
|
|
} version;
|
||
|
|
uint8_t num_of_priorities;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* dpdmai_get_attributes() - Retrieve DPDMAI 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 DPDMAI object
|
||
|
|
* @attr: Returned object's attributes
|
||
|
|
*
|
||
|
|
* Return: '0' on Success; Error code otherwise.
|
||
|
|
*/
|
||
|
|
int dpdmai_get_attributes(struct fsl_mc_io *mc_io,
|
||
|
|
uint32_t cmd_flags,
|
||
|
|
uint16_t token,
|
||
|
|
struct dpdmai_attr *attr);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* enum dpdmai_dest - DPDMAI destination types
|
||
|
|
* @DPDMAI_DEST_NONE: Unassigned destination; The queue is set in parked mode
|
||
|
|
* and does not generate FQDAN notifications; user is expected to dequeue
|
||
|
|
* from the queue based on polling or other user-defined method
|
||
|
|
* @DPDMAI_DEST_DPIO: The queue is set in schedule mode and generates FQDAN
|
||
|
|
* notifications to the specified DPIO; user is expected to dequeue
|
||
|
|
* from the queue only after notification is received
|
||
|
|
* @DPDMAI_DEST_DPCON: The queue is set in schedule mode and does not generate
|
||
|
|
* FQDAN notifications, but is connected to the specified DPCON object;
|
||
|
|
* user is expected to dequeue from the DPCON channel
|
||
|
|
*/
|
||
|
|
enum dpdmai_dest {
|
||
|
|
DPDMAI_DEST_NONE = 0,
|
||
|
|
DPDMAI_DEST_DPIO = 1,
|
||
|
|
DPDMAI_DEST_DPCON = 2
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct dpdmai_dest_cfg - Structure representing DPDMAI destination parameters
|
||
|
|
* @dest_type: Destination type
|
||
|
|
* @dest_id: Either DPIO ID or DPCON ID, depending on the destination type
|
||
|
|
* @priority: Priority selection within the DPIO or DPCON channel; valid values
|
||
|
|
* are 0-1 or 0-7, depending on the number of priorities in that
|
||
|
|
* channel; not relevant for 'DPDMAI_DEST_NONE' option
|
||
|
|
*/
|
||
|
|
struct dpdmai_dest_cfg {
|
||
|
|
enum dpdmai_dest dest_type;
|
||
|
|
int dest_id;
|
||
|
|
uint8_t priority;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* DPDMAI queue modification options */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Select to modify the user's context associated with the queue
|
||
|
|
*/
|
||
|
|
#define DPDMAI_QUEUE_OPT_USER_CTX 0x00000001
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Select to modify the queue's destination
|
||
|
|
*/
|
||
|
|
#define DPDMAI_QUEUE_OPT_DEST 0x00000002
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct dpdmai_rx_queue_cfg - DPDMAI RX queue configuration
|
||
|
|
* @options: Flags representing the suggested modifications to the queue;
|
||
|
|
* Use any combination of 'DPDMAI_QUEUE_OPT_<X>' flags
|
||
|
|
* @user_ctx: User context value provided in the frame descriptor of each
|
||
|
|
* dequeued frame;
|
||
|
|
* valid only if 'DPDMAI_QUEUE_OPT_USER_CTX' is contained in 'options'
|
||
|
|
* @dest_cfg: Queue destination parameters;
|
||
|
|
* valid only if 'DPDMAI_QUEUE_OPT_DEST' is contained in 'options'
|
||
|
|
*/
|
||
|
|
struct dpdmai_rx_queue_cfg {
|
||
|
|
uint32_t options;
|
||
|
|
uint64_t user_ctx;
|
||
|
|
struct dpdmai_dest_cfg dest_cfg;
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* dpdmai_set_rx_queue() - Set Rx queue configuration
|
||
|
|
* @mc_io: Pointer to MC portal's I/O object
|
||
|
|
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
|
||
|
|
* @token: Token of DPDMAI object
|
||
|
|
* @priority: Select the queue relative to number of
|
||
|
|
* priorities configured at DPDMAI creation; use
|
||
|
|
* DPDMAI_ALL_QUEUES to configure all Rx queues
|
||
|
|
* identically.
|
||
|
|
* @cfg: Rx queue configuration
|
||
|
|
*
|
||
|
|
* Return: '0' on Success; Error code otherwise.
|
||
|
|
*/
|
||
|
|
int dpdmai_set_rx_queue(struct fsl_mc_io *mc_io,
|
||
|
|
uint32_t cmd_flags,
|
||
|
|
uint16_t token,
|
||
|
|
uint8_t priority,
|
||
|
|
const struct dpdmai_rx_queue_cfg *cfg);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct dpdmai_rx_queue_attr - Structure representing attributes of Rx queues
|
||
|
|
* @user_ctx: User context value provided in the frame descriptor of each
|
||
|
|
* dequeued frame
|
||
|
|
* @dest_cfg: Queue destination configuration
|
||
|
|
* @fqid: Virtual FQID value to be used for dequeue operations
|
||
|
|
*/
|
||
|
|
struct dpdmai_rx_queue_attr {
|
||
|
|
uint64_t user_ctx;
|
||
|
|
struct dpdmai_dest_cfg dest_cfg;
|
||
|
|
uint32_t fqid;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* dpdmai_get_rx_queue() - Retrieve Rx queue 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 DPDMAI object
|
||
|
|
* @priority: Select the queue relative to number of
|
||
|
|
* priorities configured at DPDMAI creation
|
||
|
|
* @attr: Returned Rx queue attributes
|
||
|
|
*
|
||
|
|
* Return: '0' on Success; Error code otherwise.
|
||
|
|
*/
|
||
|
|
int dpdmai_get_rx_queue(struct fsl_mc_io *mc_io,
|
||
|
|
uint32_t cmd_flags,
|
||
|
|
uint16_t token,
|
||
|
|
uint8_t priority,
|
||
|
|
struct dpdmai_rx_queue_attr *attr);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct dpdmai_tx_queue_attr - Structure representing attributes of Tx queues
|
||
|
|
* @fqid: Virtual FQID to be used for sending frames to DMA hardware
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct dpdmai_tx_queue_attr {
|
||
|
|
uint32_t fqid;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* dpdmai_get_tx_queue() - Retrieve Tx queue 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 DPDMAI object
|
||
|
|
* @priority: Select the queue relative to number of
|
||
|
|
* priorities configured at DPDMAI creation
|
||
|
|
* @attr: Returned Tx queue attributes
|
||
|
|
*
|
||
|
|
* Return: '0' on Success; Error code otherwise.
|
||
|
|
*/
|
||
|
|
int dpdmai_get_tx_queue(struct fsl_mc_io *mc_io,
|
||
|
|
uint32_t cmd_flags,
|
||
|
|
uint16_t token,
|
||
|
|
uint8_t priority,
|
||
|
|
struct dpdmai_tx_queue_attr *attr);
|
||
|
|
|
||
|
|
#endif /* __FSL_DPDMAI_H */
|