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Diffstat (limited to 'product/n1sdp/module/n1sdp_smt/include/mod_smt.h')
| -rw-r--r-- | product/n1sdp/module/n1sdp_smt/include/mod_smt.h | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/product/n1sdp/module/n1sdp_smt/include/mod_smt.h b/product/n1sdp/module/n1sdp_smt/include/mod_smt.h new file mode 100644 index 00000000..c43e0118 --- /dev/null +++ b/product/n1sdp/module/n1sdp_smt/include/mod_smt.h @@ -0,0 +1,300 @@ +/* + * Arm SCP/MCP Software + * Copyright (c) 2015-2018, Arm Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef MOD_SMT_H +#define MOD_SMT_H + +#include <stddef.h> +#include <stdint.h> +#include <stdbool.h> +#include <fwk_id.h> + +/*! + * \name Channel policies + * + * \details These policies define attributes that affect how the channel is + * treated by the SMT component. + * + * @{ + */ + +/*! No policies */ +#define MOD_SMT_POLICY_NONE ((uint32_t)0) + +/*! This channel is secure */ +#define MOD_SMT_POLICY_SECURE ((uint32_t)(1 << 0)) + +/*! The mailbox for this channel requires initialization */ +#define MOD_SMT_POLICY_INIT_MAILBOX ((uint32_t)(1 << 1)) + +/*! + * @} + */ + +/*! + * \brief Channel type + * + * \details Defines the role of an entity in a channel + */ +enum mod_smt_channel_type { + /*! Master channel */ + MOD_SMT_CHANNEL_TYPE_MASTER, + + /*! Slave channel */ + MOD_SMT_CHANNEL_TYPE_SLAVE, + + /*! Channel type count */ + MOD_SMT_CHANNEL_TYPE_COUNT, +}; + +/*! + * \brief Channel config. + */ +struct mod_smt_channel_config { + /*! Channel role (slave or master) */ + enum mod_smt_channel_type type; + + /*! Channel policies */ + uint32_t policies; + + /*! Shared mailbox address */ + uintptr_t mailbox_address; + + /*! Shared mailbox size in bytes */ + size_t mailbox_size; + + /*! Identifier of the driver */ + fwk_id_t driver_id; + + /*! Identifier of the driver API to bind to */ + fwk_id_t driver_api_id; + + /*! Identifier of the power domain that this channel depends on */ + fwk_id_t pd_source_id; +}; + +/*! + * \brief SMT command configuration (used by SCMI agent). + */ +struct mod_smt_command_config { + /*! SCMI protocol ID of the command */ + unsigned int protocol_id; + + /*! SCMI message ID of the command */ + unsigned int message_id; + + /*! Pointer to SCMI payload data */ + void *payload; + + /*! SCMI payload size in bytes */ + size_t size; +}; + +/*! + * \brief Driver API + */ +struct mod_smt_driver_api { + /*! + * \brief Raise an interrupt on the receiver + * + * \param device_id Device identifier + * + * \retval FWK_SUCCESS The operation succeeded + * \retval FWK_E_PARAM The device_id parameter is invalid + * \return One of the standard error codes for implementation-defined + * errors + */ + int (*raise_interrupt)(fwk_id_t device_id); +}; + +/*! + * \brief Driver input API (Implemented by SMT) + * + * \details Interface used for driver -> SMT communication. + */ +struct mod_smt_driver_input_api { + /*! + * \brief Signal an incoming message in the mailbox + * + * \param device_id Channel identifier + * + * \retval FWK_SUCCESS The operation succeeded. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*signal_message)(fwk_id_t channel_id); +}; + +/*! + * \brief SCMI module to transport entity API. + */ +struct mod_scmi_to_transport_api { + /*! + * \brief Check whether a channel is secure or non-secure. + * + * \param channel_id Channel identifier. + * \param secure Pointer to storage for the channel security state. True + * if the channel is secure, or false if it is non-secure. + * + * \retval FWK_SUCCESS The operation succeeded. + * \retval FWK_E_PARAM The channel_id parameter is invalid. + * \retval FWK_E_PARAM The secure parameter is NULL. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*get_secure)(fwk_id_t channel_id, bool *secure); + + /*! + * \brief Get the maximum permitted payload size of a channel. + * + * \param channel_id Channel identifier. + * \param size Pointer to storage for the maximum payload size in bytes. + * + * \retval FWK_SUCCESS The operation succeeded. + * \retval FWK_E_PARAM The channel_id parameter is invalid. + * \retval FWK_E_PARAM The size parameter is NULL. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*get_max_payload_size)(fwk_id_t channel_id, size_t *size); + + /*! + * \brief Get the SCMI message header from a channel. + * + * \param channel_id Channel identifier. + * \param message_header Pointer to storage for the SCMI message header. + * + * \retval FWK_SUCCESS The operation succeeded. + * \retval FWK_E_PARAM The channel_id parameter is invalid. + * \retval FWK_E_PARAM The message_header parameter is NULL. + * \retval FWK_E_ACCESS No message is available to read. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*get_message_header)(fwk_id_t channel_id, uint32_t *message_header); + + /*! + * \brief Get the SCMI payload from a channel. + * + * \param channel_id Channel identifier. + * \param payload Pointer to storage for the pointer to the payload. + * \param size Pointer to storage for the payload size. May be NULL, in + * which case the parameter should be ignored. + * + * \retval FWK_SUCCESS The operation succeeded. + * \retval FWK_E_PARAM The channel_id parameter is invalid. + * \retval FWK_E_PARAM The payload parameter is NULL. + * \retval FWK_E_ACCESS No message is available to read. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*get_payload)(fwk_id_t channel_id, const void **payload, + size_t *size); + + /*! + * \brief Write part of a payload to a channel. + * + * \param channel_id Channel identifier. + * \param offset Offset to begin writing at. + * \param payload Payload data to write. + * \param size Size of the payload data. + * + * \retval FWK_SUCCESS The operation succeeded. + * \retval FWK_E_PARAM The payload parameter is NULL. + * \retval FWK_E_PARAM The offset and size provided are not within the + * bounds of the payload area. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*write_payload)(fwk_id_t channel_id, size_t offset, + const void *payload, size_t size); + + /*! + * \brief Respond to an SCMI message on a channel. + * + * \param channel_id Channel identifier. + * \param payload Payload data to write, or NULL if a payload has already + * been written. + * \param size Size of the payload source. + * + * \retval FWK_SUCCESS The operation succeeded. + * \retval FWK_E_PARAM The channel_id parameter is invalid. + * \retval FWK_E_PARAM The size parameter is less than the size of one + * payload entry. + * \retval FWK_E_ACCESS No message is available to respond to. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*respond)(fwk_id_t channel_id, const void *payload, size_t size); +}; + +/*! + * \brief SCMI Agent to Transport API + * + * \details Interface used for SCMI Agent -> SMT communication. + */ +struct mod_scmi_agent_to_transport_api { + /*! + * \brief Check if a channel is free to use or not. + * + * \param channel_id Channel identifier + * + * \retval true The channel is free and the mailbox can be written to. + * \return false The channel is busy and the mailbox cannot be written. + */ + bool (*is_channel_free)(fwk_id_t channel_id); + + /*! + * \brief Send an SCMI message to platform + * + * \param channel_id Channel identifier + * \param cmd Pointer to SMT command configuration + * + * \retval FWK_SUCCESS The operation succeeded. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*send)(fwk_id_t channel_id, struct mod_smt_command_config *cmd); + + /*! + * \brief Get the SCMI payload from a channel. + * + * \param channel_id Channel identifier. + * \param payload Pointer to storage for the pointer to the payload. + * \param size Pointer to storage for the payload size. May be NULL, in + * which case the parameter should be ignored. + * + * \retval FWK_SUCCESS The operation succeeded. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*get_payload)(fwk_id_t channel_id, const void **payload, + size_t *size); + + /*! + * \brief Release the SMT channel + * + * \param channel_id Channel identifier + * + * \retval FWK_SUCCESS The operation succeeded. + * \return One of the standard error codes for implementation-defined + * errors. + */ + int (*put_channel)(fwk_id_t channel_id); +}; + +/*! + * \brief Type of the interfaces exposed by the power domain module. + */ +enum mod_smt_api_idx { + MOD_SMT_API_IDX_DRIVER_INPUT, + MOD_SMT_API_IDX_SCMI_PLATFORM_TRANSPORT, + MOD_SMT_API_IDX_SCMI_AGENT_TRANSPORT, + MOD_SMT_API_IDX_COUNT, +}; + +#endif /* MOD_SMT_H */ |