summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/freescale/dpaa2/dpmac.c
blob: d5997b65456245910e8cd493e056239f26d3107c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
// 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;
}