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1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)2/* Copyright 2013-2016 Freescale Semiconductor Inc.3 * Copyright 2019 NXP4 */5#include <linux/fsl/mc.h>6#include "dpmac.h"7#include "dpmac-cmd.h"8 9/**10 * dpmac_open() - Open a control session for the specified object.11 * @mc_io: Pointer to MC portal's I/O object12 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'13 * @dpmac_id: DPMAC unique ID14 * @token: Returned token; use in subsequent API calls15 *16 * This function can be used to open a control session for an17 * already created object; an object may have been declared in18 * the DPL or by calling the dpmac_create function.19 * This function returns a unique authentication token,20 * associated with the specific object ID and the specific MC21 * portal; this token must be used in all subsequent commands for22 * this specific object23 *24 * Return: '0' on Success; Error code otherwise.25 */26int dpmac_open(struct fsl_mc_io *mc_io,27 u32 cmd_flags,28 int dpmac_id,29 u16 *token)30{31 struct dpmac_cmd_open *cmd_params;32 struct fsl_mc_command cmd = { 0 };33 int err;34 35 /* prepare command */36 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_OPEN,37 cmd_flags,38 0);39 cmd_params = (struct dpmac_cmd_open *)cmd.params;40 cmd_params->dpmac_id = cpu_to_le32(dpmac_id);41 42 /* send command to mc*/43 err = mc_send_command(mc_io, &cmd);44 if (err)45 return err;46 47 /* retrieve response parameters */48 *token = mc_cmd_hdr_read_token(&cmd);49 50 return err;51}52 53/**54 * dpmac_close() - Close the control session of the object55 * @mc_io: Pointer to MC portal's I/O object56 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'57 * @token: Token of DPMAC object58 *59 * After this function is called, no further operations are60 * allowed on the object without opening a new control session.61 *62 * Return: '0' on Success; Error code otherwise.63 */64int dpmac_close(struct fsl_mc_io *mc_io,65 u32 cmd_flags,66 u16 token)67{68 struct fsl_mc_command cmd = { 0 };69 70 /* prepare command */71 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_CLOSE, cmd_flags,72 token);73 74 /* send command to mc*/75 return mc_send_command(mc_io, &cmd);76}77 78/**79 * dpmac_get_attributes - Retrieve DPMAC attributes.80 *81 * @mc_io: Pointer to MC portal's I/O object82 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'83 * @token: Token of DPMAC object84 * @attr: Returned object's attributes85 *86 * Return: '0' on Success; Error code otherwise.87 */88int dpmac_get_attributes(struct fsl_mc_io *mc_io,89 u32 cmd_flags,90 u16 token,91 struct dpmac_attr *attr)92{93 struct dpmac_rsp_get_attributes *rsp_params;94 struct fsl_mc_command cmd = { 0 };95 int err;96 97 /* prepare command */98 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_ATTR,99 cmd_flags,100 token);101 102 /* send command to mc*/103 err = mc_send_command(mc_io, &cmd);104 if (err)105 return err;106 107 /* retrieve response parameters */108 rsp_params = (struct dpmac_rsp_get_attributes *)cmd.params;109 attr->eth_if = rsp_params->eth_if;110 attr->link_type = rsp_params->link_type;111 attr->id = le16_to_cpu(rsp_params->id);112 attr->max_rate = le32_to_cpu(rsp_params->max_rate);113 114 return 0;115}116 117/**118 * dpmac_set_link_state() - Set the Ethernet link status119 * @mc_io: Pointer to opaque I/O object120 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'121 * @token: Token of DPMAC object122 * @link_state: Link state configuration123 *124 * Return: '0' on Success; Error code otherwise.125 */126int dpmac_set_link_state(struct fsl_mc_io *mc_io,127 u32 cmd_flags,128 u16 token,129 struct dpmac_link_state *link_state)130{131 struct dpmac_cmd_set_link_state *cmd_params;132 struct fsl_mc_command cmd = { 0 };133 134 /* prepare command */135 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_SET_LINK_STATE,136 cmd_flags,137 token);138 cmd_params = (struct dpmac_cmd_set_link_state *)cmd.params;139 cmd_params->options = cpu_to_le64(link_state->options);140 cmd_params->rate = cpu_to_le32(link_state->rate);141 dpmac_set_field(cmd_params->state, STATE, link_state->up);142 dpmac_set_field(cmd_params->state, STATE_VALID,143 link_state->state_valid);144 cmd_params->supported = cpu_to_le64(link_state->supported);145 cmd_params->advertising = cpu_to_le64(link_state->advertising);146 147 /* send command to mc*/148 return mc_send_command(mc_io, &cmd);149}150 151/**152 * dpmac_get_counter() - Read a specific DPMAC counter153 * @mc_io: Pointer to opaque I/O object154 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'155 * @token: Token of DPMAC object156 * @id: The requested counter ID157 * @value: Returned counter value158 *159 * Return: The requested counter; '0' otherwise.160 */161int dpmac_get_counter(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,162 enum dpmac_counter_id id, u64 *value)163{164 struct dpmac_cmd_get_counter *dpmac_cmd;165 struct dpmac_rsp_get_counter *dpmac_rsp;166 struct fsl_mc_command cmd = { 0 };167 int err = 0;168 169 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_COUNTER,170 cmd_flags,171 token);172 dpmac_cmd = (struct dpmac_cmd_get_counter *)cmd.params;173 dpmac_cmd->id = id;174 175 err = mc_send_command(mc_io, &cmd);176 if (err)177 return err;178 179 dpmac_rsp = (struct dpmac_rsp_get_counter *)cmd.params;180 *value = le64_to_cpu(dpmac_rsp->counter);181 182 return 0;183}184 185/**186 * dpmac_get_api_version() - Get Data Path MAC version187 * @mc_io: Pointer to MC portal's I/O object188 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'189 * @major_ver: Major version of data path mac API190 * @minor_ver: Minor version of data path mac API191 *192 * Return: '0' on Success; Error code otherwise.193 */194int dpmac_get_api_version(struct fsl_mc_io *mc_io, u32 cmd_flags,195 u16 *major_ver, u16 *minor_ver)196{197 struct dpmac_rsp_get_api_version *rsp_params;198 struct fsl_mc_command cmd = { 0 };199 int err;200 201 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_API_VERSION,202 cmd_flags,203 0);204 205 err = mc_send_command(mc_io, &cmd);206 if (err)207 return err;208 209 rsp_params = (struct dpmac_rsp_get_api_version *)cmd.params;210 *major_ver = le16_to_cpu(rsp_params->major);211 *minor_ver = le16_to_cpu(rsp_params->minor);212 213 return 0;214}215 216/**217 * dpmac_set_protocol() - Reconfigure the DPMAC protocol218 * @mc_io: Pointer to opaque I/O object219 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'220 * @token: Token of DPMAC object221 * @protocol: New protocol for the DPMAC to be reconfigured in.222 *223 * Return: '0' on Success; Error code otherwise.224 */225int dpmac_set_protocol(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,226 enum dpmac_eth_if protocol)227{228 struct dpmac_cmd_set_protocol *cmd_params;229 struct fsl_mc_command cmd = { 0 };230 231 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_SET_PROTOCOL,232 cmd_flags, token);233 cmd_params = (struct dpmac_cmd_set_protocol *)cmd.params;234 cmd_params->eth_if = protocol;235 236 return mc_send_command(mc_io, &cmd);237}238