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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/*
* Copyright 2013-2016 Freescale Semiconductor Inc.
* Copyright 2016 NXP
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the above-listed copyright holders nor the
* names of any contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <linux/kernel.h>
#include "../../include/mc.h"
#include "dpio.h"
#include "dpio-cmd.h"
/*
* Data Path I/O Portal API
* Contains initialization APIs and runtime control APIs for DPIO
*/
/**
* dpio_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_'
* @dpio_id: DPIO 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 dpio_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 dpio_open(struct fsl_mc_io *mc_io,
u32 cmd_flags,
int dpio_id,
u16 *token)
{
struct mc_command cmd = { 0 };
struct dpio_cmd_open *dpio_cmd;
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_OPEN,
cmd_flags,
0);
dpio_cmd = (struct dpio_cmd_open *)cmd.params;
dpio_cmd->dpio_id = cpu_to_le32(dpio_id);
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
/* retrieve response parameters */
*token = mc_cmd_hdr_read_token(&cmd);
return 0;
}
/**
* dpio_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 DPIO object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpio_close(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_CLOSE,
cmd_flags,
token);
return mc_send_command(mc_io, &cmd);
}
/**
* dpio_enable() - Enable the DPIO, allow I/O portal operations.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPIO object
*
* Return: '0' on Success; Error code otherwise
*/
int dpio_enable(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_ENABLE,
cmd_flags,
token);
return mc_send_command(mc_io, &cmd);
}
/**
* dpio_disable() - Disable the DPIO, stop any I/O portal operation.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPIO object
*
* Return: '0' on Success; Error code otherwise
*/
int dpio_disable(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token)
{
struct mc_command cmd = { 0 };
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_DISABLE,
cmd_flags,
token);
return mc_send_command(mc_io, &cmd);
}
/**
* dpio_get_attributes() - Retrieve DPIO 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 DPIO object
* @attr: Returned object's attributes
*
* Return: '0' on Success; Error code otherwise
*/
int dpio_get_attributes(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 token,
struct dpio_attr *attr)
{
struct mc_command cmd = { 0 };
struct dpio_rsp_get_attr *dpio_rsp;
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_GET_ATTR,
cmd_flags,
token);
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
/* retrieve response parameters */
dpio_rsp = (struct dpio_rsp_get_attr *)cmd.params;
attr->id = le32_to_cpu(dpio_rsp->id);
attr->qbman_portal_id = le16_to_cpu(dpio_rsp->qbman_portal_id);
attr->num_priorities = dpio_rsp->num_priorities;
attr->channel_mode = dpio_rsp->channel_mode & DPIO_CHANNEL_MODE_MASK;
attr->qbman_portal_ce_offset =
le64_to_cpu(dpio_rsp->qbman_portal_ce_addr);
attr->qbman_portal_ci_offset =
le64_to_cpu(dpio_rsp->qbman_portal_ci_addr);
attr->qbman_version = le32_to_cpu(dpio_rsp->qbman_version);
return 0;
}
/**
* dpio_get_api_version - Get Data Path I/O API version
* @mc_io: Pointer to MC portal's DPIO object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @major_ver: Major version of DPIO API
* @minor_ver: Minor version of DPIO API
*
* Return: '0' on Success; Error code otherwise
*/
int dpio_get_api_version(struct fsl_mc_io *mc_io,
u32 cmd_flags,
u16 *major_ver,
u16 *minor_ver)
{
struct mc_command cmd = { 0 };
int err;
/* prepare command */
cmd.header = mc_encode_cmd_header(DPIO_CMDID_GET_API_VERSION,
cmd_flags, 0);
err = mc_send_command(mc_io, &cmd);
if (err)
return err;
/* retrieve response parameters */
mc_cmd_read_api_version(&cmd, major_ver, minor_ver);
return 0;
}
|
