--- /dev/null
+/* Copyright 2013-2015 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the above-listed copyright holders nor the
+ * names of any contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef __FSL_DPBP_H
+#define __FSL_DPBP_H
+
+/* 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
+ * @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, 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
+ * @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, 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
+ * @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,
+ 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
+ * @token: Token of DPBP object
+ *
+ * Return: '0' on Success; error code otherwise.
+ */
+int dpbp_destroy(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * dpbp_enable() - Enable the DPBP.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_enable(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * dpbp_disable() - Disable the DPBP.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_disable(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * dpbp_is_enabled() - Check if the DPBP is enabled.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @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, 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
+ * @token: Token of DPBP object
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_reset(struct fsl_mc_io *mc_io, uint16_t token);
+
+/**
+ * dpbp_set_irq() - Set IRQ information for the DPBP to trigger an interrupt.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: Identifies the interrupt index to configure
+ * @irq_addr: Address that must be written to
+ * signal a message-based interrupt
+ * @irq_val: Value to write into irq_addr address
+ * @user_irq_id: A user defined number associated with this IRQ
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_set_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint64_t irq_addr,
+ uint32_t irq_val,
+ int user_irq_id);
+
+/**
+ * dpbp_get_irq() - Get IRQ information from the DPBP.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @type: Interrupt type: 0 represents message interrupt
+ * type (both irq_addr and irq_val are valid)
+ * @irq_addr: Returned address that must be written to
+ * signal the message-based interrupt
+ * @irq_val: Value to write into irq_addr address
+ * @user_irq_id: A user defined number associated with this IRQ
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_irq(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ int *type,
+ uint64_t *irq_addr,
+ uint32_t *irq_val,
+ int *user_irq_id);
+
+/**
+ * dpbp_set_irq_enable() - Set overall interrupt state.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @en: Interrupt state - enable = 1, disable = 0
+ *
+ * Allows GPP software to control when interrupts are generated.
+ * Each interrupt can have up to 32 causes. The enable/disable control's the
+ * overall interrupt state. if the interrupt is disabled no causes will cause
+ * an interrupt.
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_set_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t en);
+
+/**
+ * dpbp_get_irq_enable() - Get overall interrupt state
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @en: Returned interrupt state - enable = 1, disable = 0
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_irq_enable(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint8_t *en);
+
+/**
+ * dpbp_set_irq_mask() - Set interrupt mask.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @mask: Event mask to trigger interrupt;
+ * each bit:
+ * 0 = ignore event
+ * 1 = consider event for asserting IRQ
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_set_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t mask);
+
+/**
+ * dpbp_get_irq_mask() - Get interrupt mask.
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @mask: Returned event mask to trigger interrupt
+ *
+ * Every interrupt can have up to 32 causes and the interrupt model supports
+ * masking/unmasking each cause independently
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_irq_mask(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *mask);
+
+/**
+ * dpbp_get_irq_status() - Get the current status of any pending interrupts.
+ *
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @status: Returned interrupts status - one bit per cause:
+ * 0 = no interrupt pending
+ * 1 = interrupt pending
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_get_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t *status);
+
+/**
+ * dpbp_clear_irq_status() - Clear a pending interrupt's status
+ *
+ * @mc_io: Pointer to MC portal's I/O object
+ * @token: Token of DPBP object
+ * @irq_index: The interrupt index to configure
+ * @status: Bits to clear (W1C) - one bit per cause:
+ * 0 = don't change
+ * 1 = clear status bit
+ *
+ * Return: '0' on Success; Error code otherwise.
+ */
+int dpbp_clear_irq_status(struct fsl_mc_io *mc_io,
+ uint16_t token,
+ uint8_t irq_index,
+ uint32_t status);
+
+/**
+ * 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
+ * @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,
+ uint16_t token,
+ struct dpbp_attr *attr);
+
+/** @} */
+
+#endif /* __FSL_DPBP_H */
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