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// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/* Copyright 2013-2016 Freescale Semiconductor Inc.
* Copyright 2019 NXP
*/
#include <linux/fsl/mc.h>
#include "dpmac.h"
#include "dpmac-cmd.h"
/**
* dpmac_open() - Open a control session for the specified object.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @dpmac_id: DPMAC 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 dpmac_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 dpmac_open(struct fsl_mc_io *mc_io,
u32 cmd_flags,
int dpmac_id,
u16 *token)
{
struct dpmac_cmd_open *cmd_params;
struct fsl_mc_command cmd = { 0 };
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPMAC_CMDID_OPEN,
cmd_flags,
0);
cmd_params = (struct dpmac_cmd_open *)cmd.params;
cmd_params->dpmac_id = cpu_to_le32(dpmac_id);
/* send command to mc*/
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
/* retrieve response parameters */
*token = mc_cmd_hdr_read_token(&cmd);
return err;
}
/**
* dpmac_close() - Close the control session of the object
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPMAC 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 dpmac_close(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct fsl_mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPMAC_CMDID_CLOSE, cmd_flags,
token);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
/**
* dpmac_get_attributes - Retrieve DPMAC 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 DPMAC object
* @attr: Returned object's attributes
*
* Return: '0' on Success; Error code otherwise.
*/
int dpmac_get_attributes(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token,
struct dpmac_attr *attr)
{
struct dpmac_rsp_get_attributes *rsp_params;
struct fsl_mc_command cmd = { 0 };
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_ATTR,
cmd_flags,
token);
/* send command to mc*/
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
/* retrieve response parameters */
rsp_params = (struct dpmac_rsp_get_attributes *)cmd.params;
attr->eth_if = rsp_params->eth_if;
attr->link_type = rsp_params->link_type;
attr->id = le16_to_cpu(rsp_params->id);
attr->max_rate = le32_to_cpu(rsp_params->max_rate);
return 0;
}
/**
* dpmac_set_link_state() - Set the Ethernet link status
* @mc_io: Pointer to opaque I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPMAC object
* @link_state: Link state configuration
*
* Return: '0' on Success; Error code otherwise.
*/
int dpmac_set_link_state(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token,
struct dpmac_link_state *link_state)
{
struct dpmac_cmd_set_link_state *cmd_params;
struct fsl_mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPMAC_CMDID_SET_LINK_STATE,
cmd_flags,
token);
cmd_params = (struct dpmac_cmd_set_link_state *)cmd.params;
cmd_params->options = cpu_to_le64(link_state->options);
cmd_params->rate = cpu_to_le32(link_state->rate);
dpmac_set_field(cmd_params->state, STATE, link_state->up);
dpmac_set_field(cmd_params->state, STATE_VALID,
link_state->state_valid);
cmd_params->supported = cpu_to_le64(link_state->supported);
cmd_params->advertising = cpu_to_le64(link_state->advertising);
/* send command to mc*/
return mc_send_command(mc_io, &cmd);
}
/**
* dpmac_get_counter() - Read a specific DPMAC counter
* @mc_io: Pointer to opaque I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPMAC object
* @id: The requested counter ID
* @value: Returned counter value
*
* Return: The requested counter; '0' otherwise.
*/
int dpmac_get_counter(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
enum dpmac_counter_id id, u64 *value)
{
struct dpmac_cmd_get_counter *dpmac_cmd;
struct dpmac_rsp_get_counter *dpmac_rsp;
struct fsl_mc_command cmd = { 0 };
int err = 0;
cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_COUNTER,
cmd_flags,
token);
dpmac_cmd = (struct dpmac_cmd_get_counter *)cmd.params;
dpmac_cmd->id = id;
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
dpmac_rsp = (struct dpmac_rsp_get_counter *)cmd.params;
*value = le64_to_cpu(dpmac_rsp->counter);
return 0;
}
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