1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 2017-2018, Intel Corporation 4 */ 5 6 #ifndef __STRATIX10_SVC_CLIENT_H 7 #define __STRATIX10_SVC_CLIENT_H 8 9 /* 10 * Service layer driver supports client names 11 * 12 * fpga: for FPGA configuration 13 * rsu: for remote status update 14 */ 15 #define SVC_CLIENT_FPGA "fpga" 16 #define SVC_CLIENT_RSU "rsu" 17 #define SVC_CLIENT_FCS "fcs" 18 19 /* 20 * Status of the sent command, in bit number 21 * 22 * SVC_STATUS_OK: 23 * Secure firmware accepts the request issued by one of service clients. 24 * 25 * SVC_STATUS_BUFFER_SUBMITTED: 26 * Service client successfully submits data buffer to secure firmware. 27 * 28 * SVC_STATUS_BUFFER_DONE: 29 * Secure firmware completes data process, ready to accept the 30 * next WRITE transaction. 31 * 32 * SVC_STATUS_COMPLETED: 33 * Secure firmware completes service request successfully. In case of 34 * FPGA configuration, FPGA should be in user mode. 35 * 36 * SVC_COMMAND_STATUS_BUSY: 37 * Service request is still in process. 38 * 39 * SVC_COMMAND_STATUS_ERROR: 40 * Error encountered during the process of the service request. 41 * 42 * SVC_STATUS_NO_SUPPORT: 43 * Secure firmware doesn't support requested features such as RSU retry 44 * or RSU notify. 45 */ 46 #define SVC_STATUS_OK 0 47 #define SVC_STATUS_BUFFER_SUBMITTED 1 48 #define SVC_STATUS_BUFFER_DONE 2 49 #define SVC_STATUS_COMPLETED 3 50 #define SVC_STATUS_BUSY 4 51 #define SVC_STATUS_ERROR 5 52 #define SVC_STATUS_NO_SUPPORT 6 53 #define SVC_STATUS_INVALID_PARAM 7 54 55 /* 56 * Flag bit for COMMAND_RECONFIG 57 * 58 * COMMAND_RECONFIG_FLAG_PARTIAL: 59 * Set to FPGA configuration type (full or partial). 60 */ 61 #define COMMAND_RECONFIG_FLAG_PARTIAL 0 62 63 /* 64 * Timeout settings for service clients: 65 * timeout value used in Stratix10 FPGA manager driver. 66 * timeout value used in RSU driver 67 */ 68 #define SVC_RECONFIG_REQUEST_TIMEOUT_MS 300 69 #define SVC_RECONFIG_BUFFER_TIMEOUT_MS 720 70 #define SVC_RSU_REQUEST_TIMEOUT_MS 300 71 #define SVC_FCS_REQUEST_TIMEOUT_MS 2000 72 #define SVC_COMPLETED_TIMEOUT_MS 30000 73 74 struct stratix10_svc_chan; 75 76 /** 77 * enum stratix10_svc_command_code - supported service commands 78 * 79 * @COMMAND_NOOP: do 'dummy' request for integration/debug/trouble-shooting 80 * 81 * @COMMAND_RECONFIG: ask for FPGA configuration preparation, return status 82 * is SVC_STATUS_OK 83 * 84 * @COMMAND_RECONFIG_DATA_SUBMIT: submit buffer(s) of bit-stream data for the 85 * FPGA configuration, return status is SVC_STATUS_SUBMITTED or SVC_STATUS_ERROR 86 * 87 * @COMMAND_RECONFIG_DATA_CLAIM: check the status of the configuration, return 88 * status is SVC_STATUS_COMPLETED, or SVC_STATUS_BUSY, or SVC_STATUS_ERROR 89 * 90 * @COMMAND_RECONFIG_STATUS: check the status of the configuration, return 91 * status is SVC_STATUS_COMPLETED, or SVC_STATUS_BUSY, or SVC_STATUS_ERROR 92 * 93 * @COMMAND_RSU_STATUS: request remote system update boot log, return status 94 * is log data or SVC_STATUS_RSU_ERROR 95 * 96 * @COMMAND_RSU_UPDATE: set the offset of the bitstream to boot after reboot, 97 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR 98 * 99 * @COMMAND_RSU_NOTIFY: report the status of hard processor system 100 * software to firmware, return status is SVC_STATUS_OK or 101 * SVC_STATUS_ERROR 102 * 103 * @COMMAND_RSU_RETRY: query firmware for the current image's retry counter, 104 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR 105 * 106 * @COMMAND_RSU_MAX_RETRY: query firmware for the max retry value, 107 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR 108 * 109 * @COMMAND_RSU_DCMF_VERSION: query firmware for the DCMF version, return status 110 * is SVC_STATUS_OK or SVC_STATUS_ERROR 111 * 112 * @COMMAND_POLL_SERVICE_STATUS: poll if the service request is complete, 113 * return statis is SVC_STATUS_OK, SVC_STATUS_ERROR or SVC_STATUS_BUSY 114 * 115 * @COMMAND_FIRMWARE_VERSION: query running firmware version, return status 116 * is SVC_STATUS_OK or SVC_STATUS_ERROR 117 * 118 * @COMMAND_SMC_SVC_VERSION: Non-mailbox SMC SVC API Version, 119 * return status is SVC_STATUS_OK 120 * 121 * @COMMAND_RSU_DCMF_STATUS: query firmware for the DCMF status 122 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR 123 * 124 * @COMMAND_FCS_REQUEST_SERVICE: request validation of image from firmware, 125 * return status is SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM 126 * 127 * @COMMAND_FCS_SEND_CERTIFICATE: send a certificate, return status is 128 * SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR 129 * 130 * @COMMAND_FCS_GET_PROVISION_DATA: read the provisioning data, return status is 131 * SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR 132 * 133 * @COMMAND_FCS_DATA_ENCRYPTION: encrypt the data, return status is 134 * SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR 135 * 136 * @COMMAND_FCS_DATA_DECRYPTION: decrypt the data, return status is 137 * SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR 138 * 139 * @COMMAND_FCS_RANDOM_NUMBER_GEN: generate a random number, return status 140 * is SVC_STATUS_OK, SVC_STATUS_ERROR 141 */ 142 enum stratix10_svc_command_code { 143 /* for FPGA */ 144 COMMAND_NOOP = 0, 145 COMMAND_RECONFIG, 146 COMMAND_RECONFIG_DATA_SUBMIT, 147 COMMAND_RECONFIG_DATA_CLAIM, 148 COMMAND_RECONFIG_STATUS, 149 /* for RSU */ 150 COMMAND_RSU_STATUS = 10, 151 COMMAND_RSU_UPDATE, 152 COMMAND_RSU_NOTIFY, 153 COMMAND_RSU_RETRY, 154 COMMAND_RSU_MAX_RETRY, 155 COMMAND_RSU_DCMF_VERSION, 156 COMMAND_RSU_DCMF_STATUS, 157 COMMAND_FIRMWARE_VERSION, 158 /* for FCS */ 159 COMMAND_FCS_REQUEST_SERVICE = 20, 160 COMMAND_FCS_SEND_CERTIFICATE, 161 COMMAND_FCS_GET_PROVISION_DATA, 162 COMMAND_FCS_DATA_ENCRYPTION, 163 COMMAND_FCS_DATA_DECRYPTION, 164 COMMAND_FCS_RANDOM_NUMBER_GEN, 165 /* for general status poll */ 166 COMMAND_POLL_SERVICE_STATUS = 40, 167 /* Non-mailbox SMC Call */ 168 COMMAND_SMC_SVC_VERSION = 200, 169 }; 170 171 /** 172 * struct stratix10_svc_client_msg - message sent by client to service 173 * @payload: starting address of data need be processed 174 * @payload_length: to be processed data size in bytes 175 * @payload_output: starting address of processed data 176 * @payload_length_output: processed data size in bytes 177 * @command: service command 178 * @arg: args to be passed via registers and not physically mapped buffers 179 */ 180 struct stratix10_svc_client_msg { 181 void *payload; 182 size_t payload_length; 183 void *payload_output; 184 size_t payload_length_output; 185 enum stratix10_svc_command_code command; 186 u64 arg[3]; 187 }; 188 189 /** 190 * struct stratix10_svc_command_config_type - config type 191 * @flags: flag bit for the type of FPGA configuration 192 */ 193 struct stratix10_svc_command_config_type { 194 u32 flags; 195 }; 196 197 /** 198 * struct stratix10_svc_cb_data - callback data structure from service layer 199 * @status: the status of sent command 200 * @kaddr1: address of 1st completed data block 201 * @kaddr2: address of 2nd completed data block 202 * @kaddr3: address of 3rd completed data block 203 */ 204 struct stratix10_svc_cb_data { 205 u32 status; 206 void *kaddr1; 207 void *kaddr2; 208 void *kaddr3; 209 }; 210 211 /** 212 * struct stratix10_svc_client - service client structure 213 * @dev: the client device 214 * @receive_cb: callback to provide service client the received data 215 * @priv: client private data 216 */ 217 struct stratix10_svc_client { 218 struct device *dev; 219 void (*receive_cb)(struct stratix10_svc_client *client, 220 struct stratix10_svc_cb_data *cb_data); 221 void *priv; 222 }; 223 224 /** 225 * stratix10_svc_request_channel_byname() - request service channel 226 * @client: identity of the client requesting the channel 227 * @name: supporting client name defined above 228 * 229 * Return: a pointer to channel assigned to the client on success, 230 * or ERR_PTR() on error. 231 */ 232 struct stratix10_svc_chan 233 *stratix10_svc_request_channel_byname(struct stratix10_svc_client *client, 234 const char *name); 235 236 /** 237 * stratix10_svc_free_channel() - free service channel. 238 * @chan: service channel to be freed 239 */ 240 void stratix10_svc_free_channel(struct stratix10_svc_chan *chan); 241 242 /** 243 * stratix10_svc_allocate_memory() - allocate the momory 244 * @chan: service channel assigned to the client 245 * @size: number of bytes client requests 246 * 247 * Service layer allocates the requested number of bytes from the memory 248 * pool for the client. 249 * 250 * Return: the starting address of allocated memory on success, or 251 * ERR_PTR() on error. 252 */ 253 void *stratix10_svc_allocate_memory(struct stratix10_svc_chan *chan, 254 size_t size); 255 256 /** 257 * stratix10_svc_free_memory() - free allocated memory 258 * @chan: service channel assigned to the client 259 * @kaddr: starting address of memory to be free back to pool 260 */ 261 void stratix10_svc_free_memory(struct stratix10_svc_chan *chan, void *kaddr); 262 263 /** 264 * stratix10_svc_send() - send a message to the remote 265 * @chan: service channel assigned to the client 266 * @msg: message data to be sent, in the format of 267 * struct stratix10_svc_client_msg 268 * 269 * Return: 0 for success, -ENOMEM or -ENOBUFS on error. 270 */ 271 int stratix10_svc_send(struct stratix10_svc_chan *chan, void *msg); 272 273 /** 274 * stratix10_svc_done() - complete service request 275 * @chan: service channel assigned to the client 276 * 277 * This function is used by service client to inform service layer that 278 * client's service requests are completed, or there is an error in the 279 * request process. 280 */ 281 void stratix10_svc_done(struct stratix10_svc_chan *chan); 282 #endif 283 284