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bus: fsl-mc: dpio: add APIs for DPIO objects
Add the command build/parse APIs for operating on DPIO objects through the DPAA2 Management Complex. Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> Signed-off-by: Roy Pledge <roy.pledge@nxp.com> Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ioana Radulescu
Greg Kroah-Hartman
parent
0e6437941e
commit
2704aedb5c
@ -15,3 +15,13 @@ config FSL_MC_BUS
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architecture. The fsl-mc bus driver handles discovery of
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DPAA2 objects (which are represented as Linux devices) and
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binding objects to drivers.
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config FSL_MC_DPIO
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tristate "QorIQ DPAA2 DPIO driver"
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depends on FSL_MC_BUS
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help
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Driver for the DPAA2 DPIO object. A DPIO provides queue and
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buffer management facilities for software to interact with
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other DPAA2 objects. This driver does not expose the DPIO
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objects individually, but groups them under a service layer
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API.
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@ -18,3 +18,6 @@ mc-bus-driver-objs := fsl-mc-bus.o \
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irq-gic-v3-its-fsl-mc-msi.o \
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dpmcp.o \
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dpbp.o
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# MC DPIO driver
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obj-$(CONFIG_FSL_MC_DPIO) += dpio/
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9
drivers/staging/fsl-mc/bus/dpio/Makefile
Normal file
9
drivers/staging/fsl-mc/bus/dpio/Makefile
Normal file
@ -0,0 +1,9 @@
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#
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# QorIQ DPAA2 DPIO driver
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#
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subdir-ccflags-y := -Werror
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obj-$(CONFIG_FSL_MC_DPIO) += fsl-mc-dpio.o
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fsl-mc-dpio-objs := dpio.o
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75
drivers/staging/fsl-mc/bus/dpio/dpio-cmd.h
Normal file
75
drivers/staging/fsl-mc/bus/dpio/dpio-cmd.h
Normal file
@ -0,0 +1,75 @@
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/*
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* Copyright 2013-2016 Freescale Semiconductor Inc.
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* Copyright 2016 NXP
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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
|
||||
* 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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* 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_DPIO_CMD_H
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#define _FSL_DPIO_CMD_H
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/* DPIO Version */
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#define DPIO_VER_MAJOR 4
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#define DPIO_VER_MINOR 2
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/* Command Versioning */
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#define DPIO_CMD_ID_OFFSET 4
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#define DPIO_CMD_BASE_VERSION 1
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#define DPIO_CMD(id) (((id) << DPIO_CMD_ID_OFFSET) | DPIO_CMD_BASE_VERSION)
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/* Command IDs */
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#define DPIO_CMDID_CLOSE DPIO_CMD(0x800)
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#define DPIO_CMDID_OPEN DPIO_CMD(0x803)
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#define DPIO_CMDID_GET_API_VERSION DPIO_CMD(0xa03)
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#define DPIO_CMDID_ENABLE DPIO_CMD(0x002)
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#define DPIO_CMDID_DISABLE DPIO_CMD(0x003)
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#define DPIO_CMDID_GET_ATTR DPIO_CMD(0x004)
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struct dpio_cmd_open {
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__le32 dpio_id;
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};
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#define DPIO_CHANNEL_MODE_MASK 0x3
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struct dpio_rsp_get_attr {
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/* cmd word 0 */
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__le32 id;
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__le16 qbman_portal_id;
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u8 num_priorities;
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u8 channel_mode;
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/* cmd word 1 */
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__le64 qbman_portal_ce_addr;
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/* cmd word 2 */
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__le64 qbman_portal_ci_addr;
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/* cmd word 3 */
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__le32 qbman_version;
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};
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#endif /* _FSL_DPIO_CMD_H */
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224
drivers/staging/fsl-mc/bus/dpio/dpio.c
Normal file
224
drivers/staging/fsl-mc/bus/dpio/dpio.c
Normal file
@ -0,0 +1,224 @@
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/*
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* Copyright 2013-2016 Freescale Semiconductor Inc.
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* Copyright 2016 NXP
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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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* 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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#include "../../include/mc-sys.h"
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#include "../../include/mc-cmd.h"
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#include "dpio.h"
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#include "dpio-cmd.h"
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/*
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* Data Path I/O Portal API
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* Contains initialization APIs and runtime control APIs for DPIO
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*/
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/**
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* dpio_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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* @dpio_id: DPIO 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 dpio_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 dpio_open(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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int dpio_id,
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u16 *token)
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{
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struct mc_command cmd = { 0 };
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struct dpio_cmd_open *dpio_cmd;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPIO_CMDID_OPEN,
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cmd_flags,
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0);
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dpio_cmd = (struct dpio_cmd_open *)cmd.params;
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dpio_cmd->dpio_id = cpu_to_le32(dpio_id);
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err = mc_send_command(mc_io, &cmd);
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if (err)
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return err;
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/* retrieve response parameters */
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*token = mc_cmd_hdr_read_token(&cmd);
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return 0;
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}
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/**
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* dpio_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 DPIO 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 dpio_close(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token)
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{
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struct mc_command cmd = { 0 };
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPIO_CMDID_CLOSE,
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cmd_flags,
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token);
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return mc_send_command(mc_io, &cmd);
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}
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/**
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* dpio_enable() - Enable the DPIO, allow I/O portal operations.
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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 DPIO 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 dpio_enable(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token)
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{
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struct mc_command cmd = { 0 };
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPIO_CMDID_ENABLE,
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cmd_flags,
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token);
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return mc_send_command(mc_io, &cmd);
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}
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/**
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* dpio_disable() - Disable the DPIO, stop any I/O portal operation.
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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 DPIO 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 dpio_disable(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token)
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{
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struct mc_command cmd = { 0 };
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPIO_CMDID_DISABLE,
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cmd_flags,
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token);
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return mc_send_command(mc_io, &cmd);
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}
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/**
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* dpio_get_attributes() - Retrieve DPIO attributes
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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 DPIO 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 dpio_get_attributes(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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struct dpio_attr *attr)
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{
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struct mc_command cmd = { 0 };
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struct dpio_rsp_get_attr *dpio_rsp;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPIO_CMDID_GET_ATTR,
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cmd_flags,
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token);
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err = mc_send_command(mc_io, &cmd);
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if (err)
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return err;
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/* retrieve response parameters */
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dpio_rsp = (struct dpio_rsp_get_attr *)cmd.params;
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attr->id = le32_to_cpu(dpio_rsp->id);
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attr->qbman_portal_id = le16_to_cpu(dpio_rsp->qbman_portal_id);
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attr->num_priorities = dpio_rsp->num_priorities;
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attr->channel_mode = dpio_rsp->channel_mode & DPIO_CHANNEL_MODE_MASK;
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attr->qbman_portal_ce_offset =
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le64_to_cpu(dpio_rsp->qbman_portal_ce_addr);
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attr->qbman_portal_ci_offset =
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le64_to_cpu(dpio_rsp->qbman_portal_ci_addr);
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attr->qbman_version = le32_to_cpu(dpio_rsp->qbman_version);
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return 0;
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}
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/**
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* dpio_get_api_version - Get Data Path I/O API version
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* @mc_io: Pointer to MC portal's DPIO object
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* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
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* @major_ver: Major version of DPIO API
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* @minor_ver: Minor version of DPIO API
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*
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* Return: '0' on Success; Error code otherwise
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*/
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int dpio_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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struct mc_command cmd = { 0 };
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPIO_CMDID_GET_API_VERSION,
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cmd_flags, 0);
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err = mc_send_command(mc_io, &cmd);
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if (err)
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return err;
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/* retrieve response parameters */
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mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
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return 0;
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}
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109
drivers/staging/fsl-mc/bus/dpio/dpio.h
Normal file
109
drivers/staging/fsl-mc/bus/dpio/dpio.h
Normal file
@ -0,0 +1,109 @@
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/*
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* Copyright 2013-2016 Freescale Semiconductor Inc.
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* Copyright 2016 NXP
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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:
|
||||
* * 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
|
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* 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
|
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* POSSIBILITY OF SUCH DAMAGE.
|
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*/
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#ifndef __FSL_DPIO_H
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#define __FSL_DPIO_H
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struct fsl_mc_io;
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int dpio_open(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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int dpio_id,
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u16 *token);
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int dpio_close(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token);
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/**
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* enum dpio_channel_mode - DPIO notification channel mode
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* @DPIO_NO_CHANNEL: No support for notification channel
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* @DPIO_LOCAL_CHANNEL: Notifications on data availability can be received by a
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* dedicated channel in the DPIO; user should point the queue's
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* destination in the relevant interface to this DPIO
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*/
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enum dpio_channel_mode {
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DPIO_NO_CHANNEL = 0,
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DPIO_LOCAL_CHANNEL = 1,
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};
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/**
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* struct dpio_cfg - Structure representing DPIO configuration
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* @channel_mode: Notification channel mode
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* @num_priorities: Number of priorities for the notification channel (1-8);
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* relevant only if 'channel_mode = DPIO_LOCAL_CHANNEL'
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*/
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struct dpio_cfg {
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enum dpio_channel_mode channel_mode;
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u8 num_priorities;
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};
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int dpio_enable(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token);
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int dpio_disable(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token);
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/**
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* struct dpio_attr - Structure representing DPIO attributes
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* @id: DPIO object ID
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* @qbman_portal_ce_offset: offset of the software portal cache-enabled area
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* @qbman_portal_ci_offset: offset of the software portal cache-inhibited area
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* @qbman_portal_id: Software portal ID
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* @channel_mode: Notification channel mode
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* @num_priorities: Number of priorities for the notification channel (1-8);
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* relevant only if 'channel_mode = DPIO_LOCAL_CHANNEL'
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* @qbman_version: QBMAN version
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*/
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struct dpio_attr {
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int id;
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u64 qbman_portal_ce_offset;
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u64 qbman_portal_ci_offset;
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u16 qbman_portal_id;
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enum dpio_channel_mode channel_mode;
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u8 num_priorities;
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u32 qbman_version;
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};
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int dpio_get_attributes(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
|
||||
u16 token,
|
||||
struct dpio_attr *attr);
|
||||
|
||||
int dpio_get_api_version(struct fsl_mc_io *mc_io,
|
||||
u32 cmd_flags,
|
||||
u16 *major_ver,
|
||||
u16 *minor_ver);
|
||||
|
||||
#endif /* __FSL_DPIO_H */
|
||||
Loading…
Reference in New Issue
Block a user