289 lines
8.9 KiB
C
289 lines
8.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2017-2018, Intel Corporation
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*/
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#ifndef __STRATIX10_SVC_CLIENT_H
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#define __STRATIX10_SVC_CLIENT_H
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/*
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* Service layer driver supports client names
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*
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* fpga: for FPGA configuration
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* rsu: for remote status update
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*/
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#define SVC_CLIENT_FPGA "fpga"
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#define SVC_CLIENT_RSU "rsu"
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#define SVC_CLIENT_FCS "fcs"
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/*
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* Status of the sent command, in bit number
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*
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* SVC_STATUS_OK:
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* Secure firmware accepts the request issued by one of service clients.
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*
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* SVC_STATUS_BUFFER_SUBMITTED:
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* Service client successfully submits data buffer to secure firmware.
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*
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* SVC_STATUS_BUFFER_DONE:
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* Secure firmware completes data process, ready to accept the
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* next WRITE transaction.
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*
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* SVC_STATUS_COMPLETED:
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* Secure firmware completes service request successfully. In case of
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* FPGA configuration, FPGA should be in user mode.
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*
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* SVC_COMMAND_STATUS_BUSY:
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* Service request is still in process.
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*
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* SVC_COMMAND_STATUS_ERROR:
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* Error encountered during the process of the service request.
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*
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* SVC_STATUS_NO_SUPPORT:
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* Secure firmware doesn't support requested features such as RSU retry
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* or RSU notify.
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*/
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#define SVC_STATUS_OK 0
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#define SVC_STATUS_BUFFER_SUBMITTED 1
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#define SVC_STATUS_BUFFER_DONE 2
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#define SVC_STATUS_COMPLETED 3
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#define SVC_STATUS_BUSY 4
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#define SVC_STATUS_ERROR 5
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#define SVC_STATUS_NO_SUPPORT 6
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#define SVC_STATUS_INVALID_PARAM 7
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/*
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* Flag bit for COMMAND_RECONFIG
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*
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* COMMAND_RECONFIG_FLAG_PARTIAL:
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* Set to FPGA configuration type (full or partial).
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*/
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#define COMMAND_RECONFIG_FLAG_PARTIAL 0
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/*
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* Timeout settings for service clients:
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* timeout value used in Stratix10 FPGA manager driver.
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* timeout value used in RSU driver
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*/
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#define SVC_RECONFIG_REQUEST_TIMEOUT_MS 300
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#define SVC_RECONFIG_BUFFER_TIMEOUT_MS 720
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#define SVC_RSU_REQUEST_TIMEOUT_MS 300
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#define SVC_FCS_REQUEST_TIMEOUT_MS 2000
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#define SVC_COMPLETED_TIMEOUT_MS 30000
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struct stratix10_svc_chan;
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/**
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* enum stratix10_svc_command_code - supported service commands
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*
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* @COMMAND_NOOP: do 'dummy' request for integration/debug/trouble-shooting
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*
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* @COMMAND_RECONFIG: ask for FPGA configuration preparation, return status
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* is SVC_STATUS_OK
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*
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* @COMMAND_RECONFIG_DATA_SUBMIT: submit buffer(s) of bit-stream data for the
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* FPGA configuration, return status is SVC_STATUS_SUBMITTED or SVC_STATUS_ERROR
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*
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* @COMMAND_RECONFIG_DATA_CLAIM: check the status of the configuration, return
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* status is SVC_STATUS_COMPLETED, or SVC_STATUS_BUSY, or SVC_STATUS_ERROR
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*
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* @COMMAND_RECONFIG_STATUS: check the status of the configuration, return
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* status is SVC_STATUS_COMPLETED, or SVC_STATUS_BUSY, or SVC_STATUS_ERROR
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*
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* @COMMAND_RSU_STATUS: request remote system update boot log, return status
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* is log data or SVC_STATUS_RSU_ERROR
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*
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* @COMMAND_RSU_UPDATE: set the offset of the bitstream to boot after reboot,
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* return status is SVC_STATUS_OK or SVC_STATUS_ERROR
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*
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* @COMMAND_RSU_NOTIFY: report the status of hard processor system
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* software to firmware, return status is SVC_STATUS_OK or
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* SVC_STATUS_ERROR
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*
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* @COMMAND_RSU_RETRY: query firmware for the current image's retry counter,
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* return status is SVC_STATUS_OK or SVC_STATUS_ERROR
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*
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* @COMMAND_RSU_MAX_RETRY: query firmware for the max retry value,
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* return status is SVC_STATUS_OK or SVC_STATUS_ERROR
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*
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* @COMMAND_RSU_DCMF_VERSION: query firmware for the DCMF version, return status
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* is SVC_STATUS_OK or SVC_STATUS_ERROR
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*
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* @COMMAND_POLL_SERVICE_STATUS: poll if the service request is complete,
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* return statis is SVC_STATUS_OK, SVC_STATUS_ERROR or SVC_STATUS_BUSY
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*
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* @COMMAND_FIRMWARE_VERSION: query running firmware version, return status
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* is SVC_STATUS_OK or SVC_STATUS_ERROR
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*
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* @COMMAND_SMC_SVC_VERSION: Non-mailbox SMC SVC API Version,
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* return status is SVC_STATUS_OK
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*
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* @COMMAND_MBOX_SEND_CMD: send generic mailbox command, return status is
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* SVC_STATUS_OK or SVC_STATUS_ERROR
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*
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* @COMMAND_RSU_DCMF_STATUS: query firmware for the DCMF status
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* return status is SVC_STATUS_OK or SVC_STATUS_ERROR
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*
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* @COMMAND_FCS_REQUEST_SERVICE: request validation of image from firmware,
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* return status is SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM
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*
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* @COMMAND_FCS_SEND_CERTIFICATE: send a certificate, return status is
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* SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR
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*
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* @COMMAND_FCS_GET_PROVISION_DATA: read the provisioning data, return status is
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* SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR
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*
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* @COMMAND_FCS_DATA_ENCRYPTION: encrypt the data, return status is
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* SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR
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*
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* @COMMAND_FCS_DATA_DECRYPTION: decrypt the data, return status is
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* SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM, SVC_STATUS_ERROR
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*
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* @COMMAND_FCS_RANDOM_NUMBER_GEN: generate a random number, return status
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* is SVC_STATUS_OK, SVC_STATUS_ERROR
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*/
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enum stratix10_svc_command_code {
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/* for FPGA */
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COMMAND_NOOP = 0,
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COMMAND_RECONFIG,
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COMMAND_RECONFIG_DATA_SUBMIT,
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COMMAND_RECONFIG_DATA_CLAIM,
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COMMAND_RECONFIG_STATUS,
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/* for RSU */
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COMMAND_RSU_STATUS = 10,
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COMMAND_RSU_UPDATE,
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COMMAND_RSU_NOTIFY,
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COMMAND_RSU_RETRY,
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COMMAND_RSU_MAX_RETRY,
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COMMAND_RSU_DCMF_VERSION,
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COMMAND_RSU_DCMF_STATUS,
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COMMAND_FIRMWARE_VERSION,
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/* for FCS */
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COMMAND_FCS_REQUEST_SERVICE = 20,
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COMMAND_FCS_SEND_CERTIFICATE,
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COMMAND_FCS_GET_PROVISION_DATA,
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COMMAND_FCS_DATA_ENCRYPTION,
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COMMAND_FCS_DATA_DECRYPTION,
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COMMAND_FCS_RANDOM_NUMBER_GEN,
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/* for general status poll */
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COMMAND_POLL_SERVICE_STATUS = 40,
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/* for generic mailbox send command */
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COMMAND_MBOX_SEND_CMD = 100,
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/* Non-mailbox SMC Call */
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COMMAND_SMC_SVC_VERSION = 200,
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};
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/**
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* struct stratix10_svc_client_msg - message sent by client to service
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* @payload: starting address of data need be processed
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* @payload_length: to be processed data size in bytes
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* @payload_output: starting address of processed data
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* @payload_length_output: processed data size in bytes
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* @command: service command
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* @arg: args to be passed via registers and not physically mapped buffers
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*/
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struct stratix10_svc_client_msg {
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void *payload;
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size_t payload_length;
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void *payload_output;
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size_t payload_length_output;
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enum stratix10_svc_command_code command;
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u64 arg[3];
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};
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/**
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* struct stratix10_svc_command_config_type - config type
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* @flags: flag bit for the type of FPGA configuration
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*/
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struct stratix10_svc_command_config_type {
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u32 flags;
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};
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/**
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* struct stratix10_svc_cb_data - callback data structure from service layer
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* @status: the status of sent command
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* @kaddr1: address of 1st completed data block
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* @kaddr2: address of 2nd completed data block
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* @kaddr3: address of 3rd completed data block
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*/
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struct stratix10_svc_cb_data {
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u32 status;
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void *kaddr1;
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void *kaddr2;
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void *kaddr3;
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};
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/**
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* struct stratix10_svc_client - service client structure
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* @dev: the client device
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* @receive_cb: callback to provide service client the received data
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* @priv: client private data
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*/
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struct stratix10_svc_client {
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struct device *dev;
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void (*receive_cb)(struct stratix10_svc_client *client,
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struct stratix10_svc_cb_data *cb_data);
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void *priv;
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};
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/**
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* stratix10_svc_request_channel_byname() - request service channel
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* @client: identity of the client requesting the channel
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* @name: supporting client name defined above
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*
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* Return: a pointer to channel assigned to the client on success,
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* or ERR_PTR() on error.
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*/
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struct stratix10_svc_chan
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*stratix10_svc_request_channel_byname(struct stratix10_svc_client *client,
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const char *name);
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/**
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* stratix10_svc_free_channel() - free service channel.
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* @chan: service channel to be freed
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*/
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void stratix10_svc_free_channel(struct stratix10_svc_chan *chan);
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/**
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* stratix10_svc_allocate_memory() - allocate the momory
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* @chan: service channel assigned to the client
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* @size: number of bytes client requests
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*
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* Service layer allocates the requested number of bytes from the memory
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* pool for the client.
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*
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* Return: the starting address of allocated memory on success, or
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* ERR_PTR() on error.
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*/
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void *stratix10_svc_allocate_memory(struct stratix10_svc_chan *chan,
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size_t size);
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/**
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* stratix10_svc_free_memory() - free allocated memory
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* @chan: service channel assigned to the client
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* @kaddr: starting address of memory to be free back to pool
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*/
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void stratix10_svc_free_memory(struct stratix10_svc_chan *chan, void *kaddr);
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/**
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* stratix10_svc_send() - send a message to the remote
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* @chan: service channel assigned to the client
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* @msg: message data to be sent, in the format of
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* struct stratix10_svc_client_msg
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*
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* Return: 0 for success, -ENOMEM or -ENOBUFS on error.
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*/
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int stratix10_svc_send(struct stratix10_svc_chan *chan, void *msg);
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/**
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* stratix10_svc_done() - complete service request
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* @chan: service channel assigned to the client
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*
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* This function is used by service client to inform service layer that
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* client's service requests are completed, or there is an error in the
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* request process.
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*/
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void stratix10_svc_done(struct stratix10_svc_chan *chan);
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#endif
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