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https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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staging: fsl-mc: Move DPCON out of staging
Move the source files out of staging into their final locations: - dpcon.c goes to drivers/bus/fsl-mc/, next to the core infrastructure - dpcon-cmd.h gets merged into drivers/bus/fsl-mc/fsl-mc-private.h, next to the other internally used APIs - dpcon.h gets merged into include/linux/fsl/mc.h, exposing the public API Update references in the dpaa2-eth staging driver. DPCON stands for Data Path Concentrator - an interface between DPIO (Data Path IO) and its users (e.g. dpaa2-eth). You can read more about DPIO in Documentation/networking/dpaa2/overview.rst Signed-off-by: Bogdan Purcareata <[email protected]> Reviewed-by: Laurentiu Tudor <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Bogdan Purcareata
Greg Kroah-Hartman
parent
9c692d5ae7
commit
70ae9cf015
8 changed files with 117 additions and 136 deletions
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@ -10,6 +10,7 @@ mc-bus-driver-objs := fsl-mc-bus.o \
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mc-sys.o \
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mc-io.o \
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dpbp.o \
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dpcon.o \
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dprc.o \
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dprc-driver.o \
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fsl-mc-allocator.o \
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222
drivers/bus/fsl-mc/dpcon.c
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222
drivers/bus/fsl-mc/dpcon.c
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@ -0,0 +1,222 @@
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// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
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/*
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* Copyright 2013-2016 Freescale Semiconductor Inc.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/fsl/mc.h>
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#include <linux/fsl/mc.h>
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#include "fsl-mc-private.h"
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/**
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* dpcon_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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* @dpcon_id: DPCON 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 dpcon_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 dpcon_open(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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int dpcon_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 dpcon_cmd_open *dpcon_cmd;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPCON_CMDID_OPEN,
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cmd_flags,
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0);
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dpcon_cmd = (struct dpcon_cmd_open *)cmd.params;
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dpcon_cmd->dpcon_id = cpu_to_le32(dpcon_id);
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/* send command to mc*/
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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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EXPORT_SYMBOL_GPL(dpcon_open);
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/**
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* dpcon_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 DPCON 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 dpcon_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(DPCON_CMDID_CLOSE,
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cmd_flags,
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token);
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/* send command to mc*/
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return mc_send_command(mc_io, &cmd);
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}
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EXPORT_SYMBOL_GPL(dpcon_close);
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/**
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* dpcon_enable() - Enable the DPCON
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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 DPCON 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 dpcon_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(DPCON_CMDID_ENABLE,
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cmd_flags,
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token);
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/* send command to mc*/
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return mc_send_command(mc_io, &cmd);
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}
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EXPORT_SYMBOL_GPL(dpcon_enable);
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/**
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* dpcon_disable() - Disable the DPCON
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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 DPCON 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 dpcon_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(DPCON_CMDID_DISABLE,
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cmd_flags,
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token);
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/* send command to mc*/
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return mc_send_command(mc_io, &cmd);
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}
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EXPORT_SYMBOL_GPL(dpcon_disable);
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/**
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* dpcon_reset() - Reset the DPCON, 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 DPCON 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 dpcon_reset(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(DPCON_CMDID_RESET,
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cmd_flags, token);
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/* send command to mc*/
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return mc_send_command(mc_io, &cmd);
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}
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EXPORT_SYMBOL_GPL(dpcon_reset);
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/**
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* dpcon_get_attributes() - Retrieve DPCON 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 DPCON object
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* @attr: 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 dpcon_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 dpcon_attr *attr)
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{
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struct mc_command cmd = { 0 };
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struct dpcon_rsp_get_attr *dpcon_rsp;
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int err;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPCON_CMDID_GET_ATTR,
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cmd_flags,
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token);
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/* send command to mc*/
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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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dpcon_rsp = (struct dpcon_rsp_get_attr *)cmd.params;
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attr->id = le32_to_cpu(dpcon_rsp->id);
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attr->qbman_ch_id = le16_to_cpu(dpcon_rsp->qbman_ch_id);
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attr->num_priorities = dpcon_rsp->num_priorities;
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return 0;
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}
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EXPORT_SYMBOL_GPL(dpcon_get_attributes);
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/**
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* dpcon_set_notification() - Set DPCON notification destination
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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 DPCON object
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* @cfg: Notification parameters
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*
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* Return: '0' on Success; Error code otherwise
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*/
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int dpcon_set_notification(struct fsl_mc_io *mc_io,
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u32 cmd_flags,
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u16 token,
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struct dpcon_notification_cfg *cfg)
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{
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struct mc_command cmd = { 0 };
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struct dpcon_cmd_set_notification *dpcon_cmd;
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/* prepare command */
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cmd.header = mc_encode_cmd_header(DPCON_CMDID_SET_NOTIFICATION,
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cmd_flags,
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token);
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dpcon_cmd = (struct dpcon_cmd_set_notification *)cmd.params;
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dpcon_cmd->dpio_id = cpu_to_le32(cfg->dpio_id);
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dpcon_cmd->priority = cfg->priority;
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dpcon_cmd->user_ctx = cpu_to_le64(cfg->user_ctx);
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/* send command to mc*/
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return mc_send_command(mc_io, &cmd);
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}
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EXPORT_SYMBOL_GPL(dpcon_set_notification);
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@ -418,6 +418,54 @@ struct dpbp_rsp_get_attributes {
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__le16 version_minor;
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};
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/*
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* Data Path Concentrator (DPCON) API
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*/
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/* DPCON Version */
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#define DPCON_VER_MAJOR 3
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#define DPCON_VER_MINOR 2
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/* Command versioning */
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#define DPCON_CMD_BASE_VERSION 1
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#define DPCON_CMD_ID_OFFSET 4
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#define DPCON_CMD(id) (((id) << DPCON_CMD_ID_OFFSET) | DPCON_CMD_BASE_VERSION)
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/* Command IDs */
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#define DPCON_CMDID_CLOSE DPCON_CMD(0x800)
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#define DPCON_CMDID_OPEN DPCON_CMD(0x808)
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#define DPCON_CMDID_ENABLE DPCON_CMD(0x002)
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#define DPCON_CMDID_DISABLE DPCON_CMD(0x003)
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#define DPCON_CMDID_GET_ATTR DPCON_CMD(0x004)
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#define DPCON_CMDID_RESET DPCON_CMD(0x005)
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#define DPCON_CMDID_SET_NOTIFICATION DPCON_CMD(0x100)
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struct dpcon_cmd_open {
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__le32 dpcon_id;
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};
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#define DPCON_ENABLE 1
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struct dpcon_rsp_get_attr {
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/* response word 0 */
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__le32 id;
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__le16 qbman_ch_id;
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u8 num_priorities;
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u8 pad;
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};
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struct dpcon_cmd_set_notification {
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/* cmd word 0 */
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__le32 dpio_id;
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u8 priority;
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u8 pad[3];
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/* cmd word 1 */
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__le64 user_ctx;
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};
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/**
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* Maximum number of total IRQs that can be pre-allocated for an MC bus'
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* IRQ pool
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