1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2017-2018, Intel Corporation
6 #ifndef __STRATIX10_SVC_CLIENT_H
7 #define __STRATIX10_SVC_CLIENT_H
10 * Service layer driver supports client names
12 * fpga: for FPGA configuration
13 * rsu: for remote status update
15 #define SVC_CLIENT_FPGA "fpga"
16 #define SVC_CLIENT_RSU "rsu"
19 * Status of the sent command, in bit number
22 * Secure firmware accepts the request issued by one of service clients.
24 * SVC_STATUS_BUFFER_SUBMITTED:
25 * Service client successfully submits data buffer to secure firmware.
27 * SVC_STATUS_BUFFER_DONE:
28 * Secure firmware completes data process, ready to accept the
29 * next WRITE transaction.
31 * SVC_STATUS_COMPLETED:
32 * Secure firmware completes service request successfully. In case of
33 * FPGA configuration, FPGA should be in user mode.
35 * SVC_COMMAND_STATUS_BUSY:
36 * Service request is still in process.
38 * SVC_COMMAND_STATUS_ERROR:
39 * Error encountered during the process of the service request.
41 * SVC_STATUS_NO_SUPPORT:
42 * Secure firmware doesn't support requested features such as RSU retry
45 #define SVC_STATUS_OK 0
46 #define SVC_STATUS_BUFFER_SUBMITTED 1
47 #define SVC_STATUS_BUFFER_DONE 2
48 #define SVC_STATUS_COMPLETED 3
49 #define SVC_STATUS_BUSY 4
50 #define SVC_STATUS_ERROR 5
51 #define SVC_STATUS_NO_SUPPORT 6
54 * Flag bit for COMMAND_RECONFIG
56 * COMMAND_RECONFIG_FLAG_PARTIAL:
57 * Set to FPGA configuration type (full or partial).
59 #define COMMAND_RECONFIG_FLAG_PARTIAL 1
62 * Timeout settings for service clients:
63 * timeout value used in Stratix10 FPGA manager driver.
64 * timeout value used in RSU driver
66 #define SVC_RECONFIG_REQUEST_TIMEOUT_MS 300
67 #define SVC_RECONFIG_BUFFER_TIMEOUT_MS 720
68 #define SVC_RSU_REQUEST_TIMEOUT_MS 300
70 struct stratix10_svc_chan;
73 * enum stratix10_svc_command_code - supported service commands
75 * @COMMAND_NOOP: do 'dummy' request for integration/debug/trouble-shooting
77 * @COMMAND_RECONFIG: ask for FPGA configuration preparation, return status
80 * @COMMAND_RECONFIG_DATA_SUBMIT: submit buffer(s) of bit-stream data for the
81 * FPGA configuration, return status is SVC_STATUS_SUBMITTED or SVC_STATUS_ERROR
83 * @COMMAND_RECONFIG_DATA_CLAIM: check the status of the configuration, return
84 * status is SVC_STATUS_COMPLETED, or SVC_STATUS_BUSY, or SVC_STATUS_ERROR
86 * @COMMAND_RECONFIG_STATUS: check the status of the configuration, return
87 * status is SVC_STATUS_COMPLETED, or SVC_STATUS_BUSY, or SVC_STATUS_ERROR
89 * @COMMAND_RSU_STATUS: request remote system update boot log, return status
90 * is log data or SVC_STATUS_RSU_ERROR
92 * @COMMAND_RSU_UPDATE: set the offset of the bitstream to boot after reboot,
93 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR
95 * @COMMAND_RSU_NOTIFY: report the status of hard processor system
96 * software to firmware, return status is SVC_STATUS_OK or
99 * @COMMAND_RSU_RETRY: query firmware for the current image's retry counter,
100 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR
102 * @COMMAND_RSU_MAX_RETRY: query firmware for the max retry value,
103 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR
105 * @COMMAND_RSU_DCMF_VERSION: query firmware for the DCMF version, return status
106 * is SVC_STATUS_OK or SVC_STATUS_ERROR
108 enum stratix10_svc_command_code {
111 COMMAND_RECONFIG_DATA_SUBMIT,
112 COMMAND_RECONFIG_DATA_CLAIM,
113 COMMAND_RECONFIG_STATUS,
118 COMMAND_RSU_MAX_RETRY,
119 COMMAND_RSU_DCMF_VERSION,
123 * struct stratix10_svc_client_msg - message sent by client to service
124 * @payload: starting address of data need be processed
125 * @payload_length: data size in bytes
126 * @command: service command
127 * @arg: args to be passed via registers and not physically mapped buffers
129 struct stratix10_svc_client_msg {
131 size_t payload_length;
132 enum stratix10_svc_command_code command;
137 * struct stratix10_svc_command_config_type - config type
138 * @flags: flag bit for the type of FPGA configuration
140 struct stratix10_svc_command_config_type {
145 * struct stratix10_svc_cb_data - callback data structure from service layer
146 * @status: the status of sent command
147 * @kaddr1: address of 1st completed data block
148 * @kaddr2: address of 2nd completed data block
149 * @kaddr3: address of 3rd completed data block
151 struct stratix10_svc_cb_data {
159 * struct stratix10_svc_client - service client structure
160 * @dev: the client device
161 * @receive_cb: callback to provide service client the received data
162 * @priv: client private data
164 struct stratix10_svc_client {
166 void (*receive_cb)(struct stratix10_svc_client *client,
167 struct stratix10_svc_cb_data *cb_data);
172 * stratix10_svc_request_channel_byname() - request service channel
173 * @client: identity of the client requesting the channel
174 * @name: supporting client name defined above
176 * Return: a pointer to channel assigned to the client on success,
177 * or ERR_PTR() on error.
179 struct stratix10_svc_chan
180 *stratix10_svc_request_channel_byname(struct stratix10_svc_client *client,
184 * stratix10_svc_free_channel() - free service channel.
185 * @chan: service channel to be freed
187 void stratix10_svc_free_channel(struct stratix10_svc_chan *chan);
190 * stratix10_svc_allocate_memory() - allocate the momory
191 * @chan: service channel assigned to the client
192 * @size: number of bytes client requests
194 * Service layer allocates the requested number of bytes from the memory
195 * pool for the client.
197 * Return: the starting address of allocated memory on success, or
198 * ERR_PTR() on error.
200 void *stratix10_svc_allocate_memory(struct stratix10_svc_chan *chan,
204 * stratix10_svc_free_memory() - free allocated memory
205 * @chan: service channel assigned to the client
206 * @kaddr: starting address of memory to be free back to pool
208 void stratix10_svc_free_memory(struct stratix10_svc_chan *chan, void *kaddr);
211 * stratix10_svc_send() - send a message to the remote
212 * @chan: service channel assigned to the client
213 * @msg: message data to be sent, in the format of
214 * struct stratix10_svc_client_msg
216 * Return: 0 for success, -ENOMEM or -ENOBUFS on error.
218 int stratix10_svc_send(struct stratix10_svc_chan *chan, void *msg);
221 * stratix10_svc_done() - complete service request
222 * @chan: service channel assigned to the client
224 * This function is used by service client to inform service layer that
225 * client's service requests are completed, or there is an error in the
228 void stratix10_svc_done(struct stratix10_svc_chan *chan);