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 18 /** 19 * Status of the sent command, in bit number 20 * 21 * SVC_STATUS_OK: 22 * Secure firmware accepts the request issued by one of service clients. 23 * 24 * SVC_STATUS_BUFFER_SUBMITTED: 25 * Service client successfully submits data buffer to secure firmware. 26 * 27 * SVC_STATUS_BUFFER_DONE: 28 * Secure firmware completes data process, ready to accept the 29 * next WRITE transaction. 30 * 31 * SVC_STATUS_COMPLETED: 32 * Secure firmware completes service request successfully. In case of 33 * FPGA configuration, FPGA should be in user mode. 34 * 35 * SVC_COMMAND_STATUS_BUSY: 36 * Service request is still in process. 37 * 38 * SVC_COMMAND_STATUS_ERROR: 39 * Error encountered during the process of the service request. 40 * 41 * SVC_STATUS_NO_SUPPORT: 42 * Secure firmware doesn't support requested features such as RSU retry 43 * or RSU notify. 44 */ 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 52 53 /** 54 * Flag bit for COMMAND_RECONFIG 55 * 56 * COMMAND_RECONFIG_FLAG_PARTIAL: 57 * Set to FPGA configuration type (full or partial). 58 */ 59 #define COMMAND_RECONFIG_FLAG_PARTIAL 0 60 61 /** 62 * Timeout settings for service clients: 63 * timeout value used in Stratix10 FPGA manager driver. 64 * timeout value used in RSU driver 65 */ 66 #define SVC_RECONFIG_REQUEST_TIMEOUT_MS 300 67 #define SVC_RECONFIG_BUFFER_TIMEOUT_MS 720 68 #define SVC_RSU_REQUEST_TIMEOUT_MS 300 69 70 struct stratix10_svc_chan; 71 72 /** 73 * enum stratix10_svc_command_code - supported service commands 74 * 75 * @COMMAND_NOOP: do 'dummy' request for integration/debug/trouble-shooting 76 * 77 * @COMMAND_RECONFIG: ask for FPGA configuration preparation, return status 78 * is SVC_STATUS_OK 79 * 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 82 * 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 85 * 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 88 * 89 * @COMMAND_RSU_STATUS: request remote system update boot log, return status 90 * is log data or SVC_STATUS_RSU_ERROR 91 * 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 94 * 95 * @COMMAND_RSU_NOTIFY: report the status of hard processor system 96 * software to firmware, return status is SVC_STATUS_OK or 97 * SVC_STATUS_ERROR 98 * 99 * @COMMAND_RSU_RETRY: query firmware for the current image's retry counter, 100 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR 101 * 102 * @COMMAND_RSU_MAX_RETRY: query firmware for the max retry value, 103 * return status is SVC_STATUS_OK or SVC_STATUS_ERROR 104 * 105 * @COMMAND_RSU_DCMF_VERSION: query firmware for the DCMF version, return status 106 * is SVC_STATUS_OK or SVC_STATUS_ERROR 107 */ 108 enum stratix10_svc_command_code { 109 COMMAND_NOOP = 0, 110 COMMAND_RECONFIG, 111 COMMAND_RECONFIG_DATA_SUBMIT, 112 COMMAND_RECONFIG_DATA_CLAIM, 113 COMMAND_RECONFIG_STATUS, 114 COMMAND_RSU_STATUS, 115 COMMAND_RSU_UPDATE, 116 COMMAND_RSU_NOTIFY, 117 COMMAND_RSU_RETRY, 118 COMMAND_RSU_MAX_RETRY, 119 COMMAND_RSU_DCMF_VERSION, 120 }; 121 122 /** 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 128 */ 129 struct stratix10_svc_client_msg { 130 void *payload; 131 size_t payload_length; 132 enum stratix10_svc_command_code command; 133 u64 arg[3]; 134 }; 135 136 /** 137 * struct stratix10_svc_command_config_type - config type 138 * @flags: flag bit for the type of FPGA configuration 139 */ 140 struct stratix10_svc_command_config_type { 141 u32 flags; 142 }; 143 144 /** 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 150 */ 151 struct stratix10_svc_cb_data { 152 u32 status; 153 void *kaddr1; 154 void *kaddr2; 155 void *kaddr3; 156 }; 157 158 /** 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 163 */ 164 struct stratix10_svc_client { 165 struct device *dev; 166 void (*receive_cb)(struct stratix10_svc_client *client, 167 struct stratix10_svc_cb_data *cb_data); 168 void *priv; 169 }; 170 171 /** 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 175 * 176 * Return: a pointer to channel assigned to the client on success, 177 * or ERR_PTR() on error. 178 */ 179 struct stratix10_svc_chan 180 *stratix10_svc_request_channel_byname(struct stratix10_svc_client *client, 181 const char *name); 182 183 /** 184 * stratix10_svc_free_channel() - free service channel. 185 * @chan: service channel to be freed 186 */ 187 void stratix10_svc_free_channel(struct stratix10_svc_chan *chan); 188 189 /** 190 * stratix10_svc_allocate_memory() - allocate the momory 191 * @chan: service channel assigned to the client 192 * @size: number of bytes client requests 193 * 194 * Service layer allocates the requested number of bytes from the memory 195 * pool for the client. 196 * 197 * Return: the starting address of allocated memory on success, or 198 * ERR_PTR() on error. 199 */ 200 void *stratix10_svc_allocate_memory(struct stratix10_svc_chan *chan, 201 size_t size); 202 203 /** 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 207 */ 208 void stratix10_svc_free_memory(struct stratix10_svc_chan *chan, void *kaddr); 209 210 /** 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 215 * 216 * Return: 0 for success, -ENOMEM or -ENOBUFS on error. 217 */ 218 int stratix10_svc_send(struct stratix10_svc_chan *chan, void *msg); 219 220 /** 221 * intel_svc_done() - complete service request 222 * @chan: service channel assigned to the client 223 * 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 226 * request process. 227 */ 228 void stratix10_svc_done(struct stratix10_svc_chan *chan); 229 #endif 230 231