summaryrefslogtreecommitdiffstats
path: root/drivers/bus/fsl-mc/dpcon.c
blob: 760555d7946e16bd130a11bfe686f0d66edca0e9 (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
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
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/*
 * Copyright 2013-2016 Freescale Semiconductor Inc.
 *
 */
#include <linux/kernel.h>
#include <linux/fsl/mc.h>
#include <linux/fsl/mc.h>

#include "fsl-mc-private.h"

/**
 * dpcon_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_'
 * @dpcon_id:	DPCON 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 dpcon_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 dpcon_open(struct fsl_mc_io *mc_io,
	       u32 cmd_flags,
	       int dpcon_id,
	       u16 *token)
{
	struct fsl_mc_command cmd = { 0 };
	struct dpcon_cmd_open *dpcon_cmd;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPCON_CMDID_OPEN,
					  cmd_flags,
					  0);
	dpcon_cmd = (struct dpcon_cmd_open *)cmd.params;
	dpcon_cmd->dpcon_id = cpu_to_le32(dpcon_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 0;
}
EXPORT_SYMBOL_GPL(dpcon_open);

/**
 * dpcon_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 DPCON 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 dpcon_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(DPCON_CMDID_CLOSE,
					  cmd_flags,
					  token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpcon_close);

/**
 * dpcon_enable() - Enable the DPCON
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPCON object
 *
 * Return:	'0' on Success; Error code otherwise
 */
int dpcon_enable(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(DPCON_CMDID_ENABLE,
					  cmd_flags,
					  token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpcon_enable);

/**
 * dpcon_disable() - Disable the DPCON
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPCON object
 *
 * Return:	'0' on Success; Error code otherwise
 */
int dpcon_disable(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(DPCON_CMDID_DISABLE,
					  cmd_flags,
					  token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpcon_disable);

/**
 * dpcon_reset() - Reset the DPCON, returns the object to initial state.
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPCON object
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpcon_reset(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(DPCON_CMDID_RESET,
					  cmd_flags, token);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpcon_reset);

/**
 * dpcon_get_attributes() - Retrieve DPCON 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 DPCON object
 * @attr:	Object's attributes
 *
 * Return:	'0' on Success; Error code otherwise.
 */
int dpcon_get_attributes(struct fsl_mc_io *mc_io,
			 u32 cmd_flags,
			 u16 token,
			 struct dpcon_attr *attr)
{
	struct fsl_mc_command cmd = { 0 };
	struct dpcon_rsp_get_attr *dpcon_rsp;
	int err;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPCON_CMDID_GET_ATTR,
					  cmd_flags,
					  token);

	/* send command to mc*/
	err = mc_send_command(mc_io, &cmd);
	if (err)
		return err;

	/* retrieve response parameters */
	dpcon_rsp = (struct dpcon_rsp_get_attr *)cmd.params;
	attr->id = le32_to_cpu(dpcon_rsp->id);
	attr->qbman_ch_id = le16_to_cpu(dpcon_rsp->qbman_ch_id);
	attr->num_priorities = dpcon_rsp->num_priorities;

	return 0;
}
EXPORT_SYMBOL_GPL(dpcon_get_attributes);

/**
 * dpcon_set_notification() - Set DPCON notification destination
 * @mc_io:	Pointer to MC portal's I/O object
 * @cmd_flags:	Command flags; one or more of 'MC_CMD_FLAG_'
 * @token:	Token of DPCON object
 * @cfg:	Notification parameters
 *
 * Return:	'0' on Success; Error code otherwise
 */
int dpcon_set_notification(struct fsl_mc_io *mc_io,
			   u32 cmd_flags,
			   u16 token,
			   struct dpcon_notification_cfg *cfg)
{
	struct fsl_mc_command cmd = { 0 };
	struct dpcon_cmd_set_notification *dpcon_cmd;

	/* prepare command */
	cmd.header = mc_encode_cmd_header(DPCON_CMDID_SET_NOTIFICATION,
					  cmd_flags,
					  token);
	dpcon_cmd = (struct dpcon_cmd_set_notification *)cmd.params;
	dpcon_cmd->dpio_id = cpu_to_le32(cfg->dpio_id);
	dpcon_cmd->priority = cfg->priority;
	dpcon_cmd->user_ctx = cpu_to_le64(cfg->user_ctx);

	/* send command to mc*/
	return mc_send_command(mc_io, &cmd);
}
EXPORT_SYMBOL_GPL(dpcon_set_notification);
OpenPOWER on IntegriCloud