1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2 /* Copyright 2013-2016 Freescale Semiconductor Inc.
5 #include <linux/fsl/mc.h>
10 * dpmac_open() - Open a control session for the specified object.
11 * @mc_io: Pointer to MC portal's I/O object
12 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
13 * @dpmac_id: DPMAC unique ID
14 * @token: Returned token; use in subsequent API calls
16 * This function can be used to open a control session for an
17 * already created object; an object may have been declared in
18 * 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 MC
21 * portal; this token must be used in all subsequent commands for
22 * this specific object
24 * Return: '0' on Success; Error code otherwise.
26 int dpmac_open(struct fsl_mc_io *mc_io,
31 struct dpmac_cmd_open *cmd_params;
32 struct fsl_mc_command cmd = { 0 };
36 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_OPEN,
39 cmd_params = (struct dpmac_cmd_open *)cmd.params;
40 cmd_params->dpmac_id = cpu_to_le32(dpmac_id);
42 /* send command to mc*/
43 err = mc_send_command(mc_io, &cmd);
47 /* retrieve response parameters */
48 *token = mc_cmd_hdr_read_token(&cmd);
54 * dpmac_close() - Close the control session of the object
55 * @mc_io: Pointer to MC portal's I/O object
56 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
57 * @token: Token of DPMAC object
59 * After this function is called, no further operations are
60 * allowed on the object without opening a new control session.
62 * Return: '0' on Success; Error code otherwise.
64 int dpmac_close(struct fsl_mc_io *mc_io,
68 struct fsl_mc_command cmd = { 0 };
71 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_CLOSE, cmd_flags,
74 /* send command to mc*/
75 return mc_send_command(mc_io, &cmd);
79 * dpmac_get_attributes - Retrieve DPMAC attributes.
81 * @mc_io: Pointer to MC portal's I/O object
82 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
83 * @token: Token of DPMAC object
84 * @attr: Returned object's attributes
86 * Return: '0' on Success; Error code otherwise.
88 int dpmac_get_attributes(struct fsl_mc_io *mc_io,
91 struct dpmac_attr *attr)
93 struct dpmac_rsp_get_attributes *rsp_params;
94 struct fsl_mc_command cmd = { 0 };
98 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_ATTR,
102 /* send command to mc*/
103 err = mc_send_command(mc_io, &cmd);
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);
118 * dpmac_set_link_state() - Set the Ethernet link status
119 * @mc_io: Pointer to opaque I/O object
120 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
121 * @token: Token of DPMAC object
122 * @link_state: Link state configuration
124 * Return: '0' on Success; Error code otherwise.
126 int dpmac_set_link_state(struct fsl_mc_io *mc_io,
129 struct dpmac_link_state *link_state)
131 struct dpmac_cmd_set_link_state *cmd_params;
132 struct fsl_mc_command cmd = { 0 };
134 /* prepare command */
135 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_SET_LINK_STATE,
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);
147 /* send command to mc*/
148 return mc_send_command(mc_io, &cmd);
152 * dpmac_get_counter() - Read a specific DPMAC counter
153 * @mc_io: Pointer to opaque I/O object
154 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
155 * @token: Token of DPMAC object
156 * @id: The requested counter ID
157 * @value: Returned counter value
159 * Return: The requested counter; '0' otherwise.
161 int dpmac_get_counter(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
162 enum dpmac_counter_id id, u64 *value)
164 struct dpmac_cmd_get_counter *dpmac_cmd;
165 struct dpmac_rsp_get_counter *dpmac_rsp;
166 struct fsl_mc_command cmd = { 0 };
169 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_COUNTER,
172 dpmac_cmd = (struct dpmac_cmd_get_counter *)cmd.params;
175 err = mc_send_command(mc_io, &cmd);
179 dpmac_rsp = (struct dpmac_rsp_get_counter *)cmd.params;
180 *value = le64_to_cpu(dpmac_rsp->counter);
186 * dpmac_get_api_version() - Get Data Path MAC version
187 * @mc_io: Pointer to MC portal's I/O object
188 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
189 * @major_ver: Major version of data path mac API
190 * @minor_ver: Minor version of data path mac API
192 * Return: '0' on Success; Error code otherwise.
194 int dpmac_get_api_version(struct fsl_mc_io *mc_io, u32 cmd_flags,
195 u16 *major_ver, u16 *minor_ver)
197 struct dpmac_rsp_get_api_version *rsp_params;
198 struct fsl_mc_command cmd = { 0 };
201 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_GET_API_VERSION,
205 err = mc_send_command(mc_io, &cmd);
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);
217 * dpmac_set_protocol() - Reconfigure the DPMAC protocol
218 * @mc_io: Pointer to opaque I/O object
219 * @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
220 * @token: Token of DPMAC object
221 * @protocol: New protocol for the DPMAC to be reconfigured in.
223 * Return: '0' on Success; Error code otherwise.
225 int dpmac_set_protocol(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
226 enum dpmac_eth_if protocol)
228 struct dpmac_cmd_set_protocol *cmd_params;
229 struct fsl_mc_command cmd = { 0 };
231 cmd.header = mc_encode_cmd_header(DPMAC_CMDID_SET_PROTOCOL,
233 cmd_params = (struct dpmac_cmd_set_protocol *)cmd.params;
234 cmd_params->eth_if = protocol;
236 return mc_send_command(mc_io, &cmd);