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
225
226
227
228
229
230
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2017-2018, Intel Corporation
*/
#ifndef __STRATIX10_SVC_CLIENT_H
#define __STRATIX10_SVC_CLIENT_H
/*
* Service layer driver supports client names
*
* fpga: for FPGA configuration
* rsu: for remote status update
*/
#define SVC_CLIENT_FPGA "fpga"
#define SVC_CLIENT_RSU "rsu"
/*
* Status of the sent command, in bit number
*
* SVC_STATUS_OK:
* Secure firmware accepts the request issued by one of service clients.
*
* SVC_STATUS_BUFFER_SUBMITTED:
* Service client successfully submits data buffer to secure firmware.
*
* SVC_STATUS_BUFFER_DONE:
* Secure firmware completes data process, ready to accept the
* next WRITE transaction.
*
* SVC_STATUS_COMPLETED:
* Secure firmware completes service request successfully. In case of
* FPGA configuration, FPGA should be in user mode.
*
* SVC_COMMAND_STATUS_BUSY:
* Service request is still in process.
*
* SVC_COMMAND_STATUS_ERROR:
* Error encountered during the process of the service request.
*
* SVC_STATUS_NO_SUPPORT:
* Secure firmware doesn't support requested features such as RSU retry
* or RSU notify.
*/
#define SVC_STATUS_OK 0
#define SVC_STATUS_BUFFER_SUBMITTED 1
#define SVC_STATUS_BUFFER_DONE 2
#define SVC_STATUS_COMPLETED 3
#define SVC_STATUS_BUSY 4
#define SVC_STATUS_ERROR 5
#define SVC_STATUS_NO_SUPPORT 6
/*
* Flag bit for COMMAND_RECONFIG
*
* COMMAND_RECONFIG_FLAG_PARTIAL:
* Set to FPGA configuration type (full or partial).
*/
#define COMMAND_RECONFIG_FLAG_PARTIAL 1
/*
* Timeout settings for service clients:
* timeout value used in Stratix10 FPGA manager driver.
* timeout value used in RSU driver
*/
#define SVC_RECONFIG_REQUEST_TIMEOUT_MS 300
#define SVC_RECONFIG_BUFFER_TIMEOUT_MS 720
#define SVC_RSU_REQUEST_TIMEOUT_MS 300
struct stratix10_svc_chan;
/**
* enum stratix10_svc_command_code - supported service commands
*
* @COMMAND_NOOP: do 'dummy' request for integration/debug/trouble-shooting
*
* @COMMAND_RECONFIG: ask for FPGA configuration preparation, return status
* is SVC_STATUS_OK
*
* @COMMAND_RECONFIG_DATA_SUBMIT: submit buffer(s) of bit-stream data for the
* FPGA configuration, return status is SVC_STATUS_SUBMITTED or SVC_STATUS_ERROR
*
* @COMMAND_RECONFIG_DATA_CLAIM: check the status of the configuration, return
* status is SVC_STATUS_COMPLETED, or SVC_STATUS_BUSY, or SVC_STATUS_ERROR
*
* @COMMAND_RECONFIG_STATUS: check the status of the configuration, return
* status is SVC_STATUS_COMPLETED, or SVC_STATUS_BUSY, or SVC_STATUS_ERROR
*
* @COMMAND_RSU_STATUS: request remote system update boot log, return status
* is log data or SVC_STATUS_RSU_ERROR
*
* @COMMAND_RSU_UPDATE: set the offset of the bitstream to boot after reboot,
* return status is SVC_STATUS_OK or SVC_STATUS_ERROR
*
* @COMMAND_RSU_NOTIFY: report the status of hard processor system
* software to firmware, return status is SVC_STATUS_OK or
* SVC_STATUS_ERROR
*
* @COMMAND_RSU_RETRY: query firmware for the current image's retry counter,
* return status is SVC_STATUS_OK or SVC_STATUS_ERROR
*
* @COMMAND_RSU_MAX_RETRY: query firmware for the max retry value,
* return status is SVC_STATUS_OK or SVC_STATUS_ERROR
*
* @COMMAND_RSU_DCMF_VERSION: query firmware for the DCMF version, return status
* is SVC_STATUS_OK or SVC_STATUS_ERROR
*/
enum stratix10_svc_command_code {
COMMAND_NOOP = 0,
COMMAND_RECONFIG,
COMMAND_RECONFIG_DATA_SUBMIT,
COMMAND_RECONFIG_DATA_CLAIM,
COMMAND_RECONFIG_STATUS,
COMMAND_RSU_STATUS,
COMMAND_RSU_UPDATE,
COMMAND_RSU_NOTIFY,
COMMAND_RSU_RETRY,
COMMAND_RSU_MAX_RETRY,
COMMAND_RSU_DCMF_VERSION,
};
/**
* struct stratix10_svc_client_msg - message sent by client to service
* @payload: starting address of data need be processed
* @payload_length: data size in bytes
* @command: service command
* @arg: args to be passed via registers and not physically mapped buffers
*/
struct stratix10_svc_client_msg {
void *payload;
size_t payload_length;
enum stratix10_svc_command_code command;
u64 arg[3];
};
/**
* struct stratix10_svc_command_config_type - config type
* @flags: flag bit for the type of FPGA configuration
*/
struct stratix10_svc_command_config_type {
u32 flags;
};
/**
* struct stratix10_svc_cb_data - callback data structure from service layer
* @status: the status of sent command
* @kaddr1: address of 1st completed data block
* @kaddr2: address of 2nd completed data block
* @kaddr3: address of 3rd completed data block
*/
struct stratix10_svc_cb_data {
u32 status;
void *kaddr1;
void *kaddr2;
void *kaddr3;
};
/**
* struct stratix10_svc_client - service client structure
* @dev: the client device
* @receive_cb: callback to provide service client the received data
* @priv: client private data
*/
struct stratix10_svc_client {
struct device *dev;
void (*receive_cb)(struct stratix10_svc_client *client,
struct stratix10_svc_cb_data *cb_data);
void *priv;
};
/**
* stratix10_svc_request_channel_byname() - request service channel
* @client: identity of the client requesting the channel
* @name: supporting client name defined above
*
* Return: a pointer to channel assigned to the client on success,
* or ERR_PTR() on error.
*/
struct stratix10_svc_chan
*stratix10_svc_request_channel_byname(struct stratix10_svc_client *client,
const char *name);
/**
* stratix10_svc_free_channel() - free service channel.
* @chan: service channel to be freed
*/
void stratix10_svc_free_channel(struct stratix10_svc_chan *chan);
/**
* stratix10_svc_allocate_memory() - allocate the momory
* @chan: service channel assigned to the client
* @size: number of bytes client requests
*
* Service layer allocates the requested number of bytes from the memory
* pool for the client.
*
* Return: the starting address of allocated memory on success, or
* ERR_PTR() on error.
*/
void *stratix10_svc_allocate_memory(struct stratix10_svc_chan *chan,
size_t size);
/**
* stratix10_svc_free_memory() - free allocated memory
* @chan: service channel assigned to the client
* @kaddr: starting address of memory to be free back to pool
*/
void stratix10_svc_free_memory(struct stratix10_svc_chan *chan, void *kaddr);
/**
* stratix10_svc_send() - send a message to the remote
* @chan: service channel assigned to the client
* @msg: message data to be sent, in the format of
* struct stratix10_svc_client_msg
*
* Return: 0 for success, -ENOMEM or -ENOBUFS on error.
*/
int stratix10_svc_send(struct stratix10_svc_chan *chan, void *msg);
/**
* stratix10_svc_done() - complete service request
* @chan: service channel assigned to the client
*
* This function is used by service client to inform service layer that
* client's service requests are completed, or there is an error in the
* request process.
*/
void stratix10_svc_done(struct stratix10_svc_chan *chan);
#endif
|
