diff options
Diffstat (limited to 'include/linux/firmware/intel/stratix10-svc-client.h')
| -rw-r--r-- | include/linux/firmware/intel/stratix10-svc-client.h | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/include/linux/firmware/intel/stratix10-svc-client.h b/include/linux/firmware/intel/stratix10-svc-client.h new file mode 100644 index 000000000..60ed82112 --- /dev/null +++ b/include/linux/firmware/intel/stratix10-svc-client.h @@ -0,0 +1,288 @@ +/* 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" +#define SVC_CLIENT_FCS "fcs" + +/* + * 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 +#define SVC_STATUS_INVALID_PARAM 7 + +/* + * Flag bit for COMMAND_RECONFIG + * + * COMMAND_RECONFIG_FLAG_PARTIAL: + * Set to FPGA configuration type (full or partial). + */ +#define COMMAND_RECONFIG_FLAG_PARTIAL 0 + +/* + * 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 +#define SVC_FCS_REQUEST_TIMEOUT_MS 2000 +#define SVC_COMPLETED_TIMEOUT_MS 30000 + +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 + * + * @COMMAND_POLL_SERVICE_STATUS: poll if the service request is complete, + * return statis is SVC_STATUS_OK, SVC_STATUS_ERROR or SVC_STATUS_BUSY + * + * @COMMAND_FIRMWARE_VERSION: query running firmware version, return status + * is SVC_STATUS_OK or SVC_STATUS_ERROR + * + * @COMMAND_SMC_SVC_VERSION: Non-mailbox SMC SVC API Version, + * return status is SVC_STATUS_OK + * + * @COMMAND_MBOX_SEND_CMD: send generic mailbox command, return status is + * SVC_STATUS_OK or SVC_STATUS_ERROR + * + * @COMMAND_RSU_DCMF_STATUS: query firmware for the DCMF status + * return status is SVC_STATUS_OK or SVC_STATUS_ERROR + * + * @COMMAND_FCS_REQUEST_SERVICE: request validation of image from firmware, + * return status is SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM + * + * @COMMAND_FCS_SEND_CERTIFICATE: send a certificate, return status is + * SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR + * + * @COMMAND_FCS_GET_PROVISION_DATA: read the provisioning data, return status is + * SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR + * + * @COMMAND_FCS_DATA_ENCRYPTION: encrypt the data, return status is + * SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR + * + * @COMMAND_FCS_DATA_DECRYPTION: decrypt the data, return status is + * SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR + * + * @COMMAND_FCS_RANDOM_NUMBER_GEN: generate a random number, return status + * is SVC_STATUS_OK, SVC_STATUS_ERROR + */ +enum stratix10_svc_command_code { + /* for FPGA */ + COMMAND_NOOP = 0, + COMMAND_RECONFIG, + COMMAND_RECONFIG_DATA_SUBMIT, + COMMAND_RECONFIG_DATA_CLAIM, + COMMAND_RECONFIG_STATUS, + /* for RSU */ + COMMAND_RSU_STATUS = 10, + COMMAND_RSU_UPDATE, + COMMAND_RSU_NOTIFY, + COMMAND_RSU_RETRY, + COMMAND_RSU_MAX_RETRY, + COMMAND_RSU_DCMF_VERSION, + COMMAND_RSU_DCMF_STATUS, + COMMAND_FIRMWARE_VERSION, + /* for FCS */ + COMMAND_FCS_REQUEST_SERVICE = 20, + COMMAND_FCS_SEND_CERTIFICATE, + COMMAND_FCS_GET_PROVISION_DATA, + COMMAND_FCS_DATA_ENCRYPTION, + COMMAND_FCS_DATA_DECRYPTION, + COMMAND_FCS_RANDOM_NUMBER_GEN, + /* for general status poll */ + COMMAND_POLL_SERVICE_STATUS = 40, + /* for generic mailbox send command */ + COMMAND_MBOX_SEND_CMD = 100, + /* Non-mailbox SMC Call */ + COMMAND_SMC_SVC_VERSION = 200, +}; + +/** + * struct stratix10_svc_client_msg - message sent by client to service + * @payload: starting address of data need be processed + * @payload_length: to be processed data size in bytes + * @payload_output: starting address of processed data + * @payload_length_output: processed 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; + void *payload_output; + size_t payload_length_output; + 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 + |