/** * @addtogroup MRQ_Format * @{ * The CPU requests the BPMP to perform a particular service by * sending it an IVC frame containing a single MRQ message. An MRQ * message consists of a @ref mrq_request followed by a payload whose * format depends on mrq_request::mrq. * * The BPMP processes the data and replies with an IVC frame (on the * same IVC channel) containing and MRQ response. An MRQ response * consists of a @ref mrq_response followed by a payload whose format * depends on the associated mrq_request::mrq. * * A well-defined subset of the MRQ messages that the CPU sends to the * BPMP can lead to BPMP eventually sending an MRQ message to the * CPU. For example, when the CPU uses an #MRQ_THERMAL message to set * a thermal trip point, the BPMP may eventually send a single * #MRQ_THERMAL message of its own to the CPU indicating that the trip * point has been crossed. * @}
*/
/** * @ingroup MRQ_Format * Request an answer from the peer. * This should be set in mrq_request::flags for all requests targetted * at BPMP. For requests originating in BPMP, this flag is optional except * for messages targeting MCE, for which the field must be set. * When this flag is not set, the remote peer must not send a response * back.
*/ #define BPMP_MAIL_DO_ACK (1U << 0U)
/** * @ingroup MRQ_Format * Ring the sender's doorbell when responding. This should be set unless * the sender wants to poll the underlying communications layer directly. * * An optional direction that can be specified in mrq_request::flags.
*/ #define BPMP_MAIL_RING_DB (1U << 1U)
/** * @ingroup MRQ_Format * @brief Header for an MRQ message * * Provides the MRQ number for the MRQ message: #mrq. The remainder of * the MRQ message is a payload (immediately following the * mrq_request) whose format depends on mrq.
*/ struct mrq_request { /** @brief MRQ number of the request */
uint32_t mrq;
/** * @brief 32bit word containing a number of fields as follows: * * struct { * uint8_t options:4; * uint8_t xid:4; * uint8_t payload_length; * uint16_t crc16; * }; * * **options** directions to the receiver and indicates CRC presence. * * #BPMP_MAIL_DO_ACK and #BPMP_MAIL_RING_DB see documentation of respective options. * #BPMP_MAIL_CRC_PRESENT is supported on T234 and later platforms. It indicates the * crc16, xid and length fields are present when set. * Some platform configurations, especially when targeted to applications requiring * functional safety, mandate this option being set or otherwise will respond with * -BPMP_EBADMSG and ignore the request. * * **xid** is a transaction ID. * * Only used when #BPMP_MAIL_CRC_PRESENT is set. * * **payload_length** of the message expressed in bytes without the size of this header. * See table below for minimum accepted payload lengths for each MRQ. * Note: For DMCE communication, this field expresses the length as a multiple of 4 bytes * rather than bytes. * * Only used when #BPMP_MAIL_CRC_PRESENT is set. * * | MRQ | CMD | minimum payload length * | -------------------- | ------------------------------------ | ------------------------------------------ | * | MRQ_PING | | 4 | * | MRQ_THREADED_PING | | 4 | * | MRQ_RESET | any | 8 | * | MRQ_I2C | | 12 + cmd_i2c_xfer_request.data_size | * | MRQ_CLK | CMD_CLK_GET_RATE | 4 | * | MRQ_CLK | CMD_CLK_SET_RATE | 16 | * | MRQ_CLK | CMD_CLK_ROUND_RATE | 16 | * | MRQ_CLK | CMD_CLK_GET_PARENT | 4 | * | MRQ_CLK | CMD_CLK_SET_PARENT | 8 | * | MRQ_CLK | CMD_CLK_ENABLE | 4 | * | MRQ_CLK | CMD_CLK_DISABLE | 4 | * | MRQ_CLK | CMD_CLK_IS_ENABLED | 4 | * | MRQ_CLK | CMD_CLK_GET_ALL_INFO | 4 | * | MRQ_CLK | CMD_CLK_GET_MAX_CLK_ID | 4 | * | MRQ_CLK | CMD_CLK_GET_FMAX_AT_VMIN | 4 | * | MRQ_QUERY_ABI | | 4 | * | MRQ_PG | CMD_PG_QUERY_ABI | 12 | * | MRQ_PG | CMD_PG_SET_STATE | 12 | * | MRQ_PG | CMD_PG_GET_STATE | 8 | * | MRQ_PG | CMD_PG_GET_NAME | 8 | * | MRQ_PG | CMD_PG_GET_MAX_ID | 8 | * | MRQ_THERMAL | CMD_THERMAL_QUERY_ABI | 8 | * | MRQ_THERMAL | CMD_THERMAL_GET_TEMP | 8 | * | MRQ_THERMAL | CMD_THERMAL_SET_TRIP | 20 | * | MRQ_THERMAL | CMD_THERMAL_GET_NUM_ZONES | 4 | * | MRQ_THERMAL | CMD_THERMAL_GET_THERMTRIP | 8 | * | MRQ_CPU_VHINT | | 8 | * | MRQ_ABI_RATCHET | | 2 | * | MRQ_EMC_DVFS_LATENCY | | 8 | * | MRQ_EMC_DVFS_EMCHUB | | 8 | * | MRQ_EMC_DISP_RFL | | 4 | * | MRQ_BWMGR | CMD_BWMGR_QUERY_ABI | 8 | * | MRQ_BWMGR | CMD_BWMGR_CALC_RATE | 8 + 8 * bwmgr_rate_req.num_iso_clients | * | MRQ_ISO_CLIENT | CMD_ISO_CLIENT_QUERY_ABI | 8 | * | MRQ_ISO_CLIENT | CMD_ISO_CLIENT_CALCULATE_LA | 16 | * | MRQ_ISO_CLIENT | CMD_ISO_CLIENT_SET_LA | 16 | * | MRQ_ISO_CLIENT | CMD_ISO_CLIENT_GET_MAX_BW | 8 | * | MRQ_CPU_NDIV_LIMITS | | 4 | * | MRQ_CPU_AUTO_CC3 | | 4 | * | MRQ_RINGBUF_CONSOLE | CMD_RINGBUF_CONSOLE_QUERY_ABI | 8 | * | MRQ_RINGBUF_CONSOLE | CMD_RINGBUF_CONSOLE_READ | 5 | * | MRQ_RINGBUF_CONSOLE | CMD_RINGBUF_CONSOLE_WRITE | 5 + cmd_ringbuf_console_write_req.len | * | MRQ_RINGBUF_CONSOLE | CMD_RINGBUF_CONSOLE_GET_FIFO | 4 | * | MRQ_STRAP | STRAP_SET | 12 | * | MRQ_UPHY | CMD_UPHY_PCIE_LANE_MARGIN_CONTROL | 24 | * | MRQ_UPHY | CMD_UPHY_PCIE_LANE_MARGIN_STATUS | 4 | * | MRQ_UPHY | CMD_UPHY_PCIE_EP_CONTROLLER_PLL_INIT | 5 | * | MRQ_UPHY | CMD_UPHY_PCIE_CONTROLLER_STATE | 6 | * | MRQ_UPHY | CMD_UPHY_PCIE_EP_CONTROLLER_PLL_OFF | 5 | * | MRQ_FMON | CMD_FMON_GEAR_CLAMP | 16 | * | MRQ_FMON | CMD_FMON_GEAR_FREE | 4 | * | MRQ_FMON | CMD_FMON_GEAR_GET | 4 | * | MRQ_FMON | CMD_FMON_FAULT_STS_GET | 8 | * | MRQ_EC | CMD_EC_STATUS_EX_GET | 12 | * | MRQ_QUERY_FW_TAG | | 0 | * | MRQ_DEBUG | CMD_DEBUG_OPEN_RO | 4 + length of cmd_debug_fopen_request.name | * | MRQ_DEBUG | CMD_DEBUG_OPEN_WO | 4 + length of cmd_debug_fopen_request.name | * | MRQ_DEBUG | CMD_DEBUG_READ | 8 | * | MRQ_DEBUG | CMD_DEBUG_WRITE | 12 + cmd_debug_fwrite_request.datalen | * | MRQ_DEBUG | CMD_DEBUG_CLOSE | 8 | * | MRQ_TELEMETRY | | 8 | * | MRQ_PWR_LIMIT | CMD_PWR_LIMIT_QUERY_ABI | 8 | * | MRQ_PWR_LIMIT | CMD_PWR_LIMIT_SET | 20 | * | MRQ_PWR_LIMIT | CMD_PWR_LIMIT_GET | 16 | * | MRQ_PWR_LIMIT | CMD_PWR_LIMIT_CURR_CAP | 8 | * | MRQ_GEARS | | 0 | * | MRQ_BWMGR_INT | CMD_BWMGR_INT_QUERY_ABI | 8 | * | MRQ_BWMGR_INT | CMD_BWMGR_INT_CALC_AND_SET | 16 | * | MRQ_BWMGR_INT | CMD_BWMGR_INT_CAP_SET | 8 | * | MRQ_OC_STATUS | | 0 | * * **crc16** * * CRC16 using polynomial x^16 + x^14 + x^12 + x^11 + x^8 + x^5 + x^4 + x^2 + 1 * and initialization value 0x4657. The CRC is calculated over all bytes of the message * including this header. However the crc16 field is considered to be set to 0 when * calculating the CRC. Only used when #BPMP_MAIL_CRC_PRESENT is set. If * #BPMP_MAIL_CRC_PRESENT is set and this field does not match the CRC as * calculated by BPMP, -BPMP_EBADMSG will be returned and the request will * be ignored. See code snippet below on how to calculate the CRC. * * @code * uint16_t calc_crc_digest(uint16_t crc, uint8_t *data, size_t size) * { * for (size_t i = 0; i < size; i++) { * crc ^= data[i] << 8; * for (size_t j = 0; j < 8; j++) { * if ((crc & 0x8000) == 0x8000) { * crc = (crc << 1) ^ 0xAC9A; * } else { * crc = (crc << 1); * } * } * } * return crc; * } * * uint16_t calc_crc(uint8_t *data, size_t size) * { * return calc_crc_digest(0x4657, data, size); * } * @endcode
*/
uint32_t flags;
} BPMP_ABI_PACKED;
/** * @ingroup MRQ_Format * @brief Header for an MRQ response * * Provides an error code for the associated MRQ message. The * remainder of the MRQ response is a payload (immediately following * the mrq_response) whose format depends on the associated * mrq_request::mrq
*/ struct mrq_response { /** @brief Error code for the MRQ request itself */
int32_t err;
/** * @brief 32bit word containing a number of fields as follows: * * struct { * uint8_t options:4; * uint8_t xid:4; * uint8_t payload_length; * uint16_t crc16; * }; * * **options** indicates CRC presence. * * #BPMP_MAIL_CRC_PRESENT is supported on T234 and later platforms and * indicates the crc16 related fields are present when set. * * **xid** is the transaction ID as sent by the requestor. * * **length** of the message expressed in bytes without the size of this header. * Note: For DMCE communication, this field expresses the length as a multiple of 4 bytes * rather than bytes. * * **crc16** * * CRC16 using polynomial x^16 + x^14 + x^12 + x^11 + x^8 + x^5 + x^4 + x^2 + 1 * and initialization value 0x4657. The CRC is calculated over all bytes of the message * including this header. However the crc16 field is considered to be set to 0 when * calculating the CRC. Only used when #BPMP_MAIL_CRC_PRESENT is set.
*/
uint32_t flags;
} BPMP_ABI_PACKED;
/** * @ingroup MRQ_Format * Minimum needed size for an IPC message buffer
*/ #define MSG_MIN_SZ 128U /** * @ingroup MRQ_Format * Minimum size guaranteed for data in an IPC message buffer
*/ #define MSG_DATA_MIN_SZ 120U
/** * @ingroup MRQ_Codes * @name Legal MRQ codes * These are the legal values for mrq_request::mrq * @{
*/
/** * @ingroup MRQ_Codes * @def MRQ_PING * @brief A simple ping * * * Platforms: All * * Initiators: Any * * Targets: Any * * Request Payload: @ref mrq_ping_request * * Response Payload: @ref mrq_ping_response * * @ingroup MRQ_Codes * @def MRQ_THREADED_PING * @brief A deeper ping * * * Platforms: All * * Initiators: Any * * Targets: BPMP * * Request Payload: @ref mrq_ping_request * * Response Payload: @ref mrq_ping_response * * Behavior is equivalent to a simple #MRQ_PING except that BPMP * responds from a thread context (providing a slightly more robust * sign of life). *
*/
/** * @ingroup Ping * @brief Request with #MRQ_PING * * Used by the sender of an #MRQ_PING message to request a pong from * recipient. The response from the recipient is computed based on * #challenge.
*/ struct mrq_ping_request { /** @brief Arbitrarily chosen value */
uint32_t challenge;
} BPMP_ABI_PACKED;
/** * @ingroup Ping * @brief Response to #MRQ_PING * * Sent in response to an #MRQ_PING message. #reply should be the * mrq_ping_request challenge left shifted by 1 with the carry-bit * dropped. *
*/ struct mrq_ping_response { /** @brief Response to the MRQ_PING challege */
uint32_t reply;
} BPMP_ABI_PACKED;
/** * @ingroup Query_Tag * @brief Request with #MRQ_QUERY_TAG * * @deprecated This structure will be removed in future version. * Use MRQ_QUERY_FW_TAG instead.
*/ struct mrq_query_tag_request { /** @brief Base address to store the firmware tag */
uint32_t addr;
} BPMP_ABI_PACKED;
/** * @ingroup Query_Tag * @brief Response to #MRQ_QUERY_FW_TAG * * Sent in response to #MRQ_QUERY_FW_TAG message. #tag contains the unique * identifier for the version of firmware issuing the reply. *
*/ struct mrq_query_fw_tag_response { /** @brief Array to store tag information */
uint8_t tag[32];
} BPMP_ABI_PACKED;
/** * @addtogroup Debugfs * @{ * * The BPMP firmware implements a pseudo-filesystem called * debugfs. Any driver within the firmware may register with debugfs * to expose an arbitrary set of "files" in the filesystem. When * software on the CPU writes to a debugfs file, debugfs passes the * written data to a callback provided by the driver. When software on * the CPU reads a debugfs file, debugfs queries the driver for the * data to return to the CPU. The intention of the debugfs filesystem * is to provide information useful for debugging the system at * runtime. * * @note The files exposed via debugfs are not part of the * BPMP firmware's ABI. debugfs files may be added or removed in any * given version of the firmware. Typically the semantics of a debugfs * file are consistent from version to version but even that is not * guaranteed. * * @}
*/
/** * @ingroup Debugfs * @brief Parameters for CMD_DEBUGFS_READ/WRITE command
*/ struct cmd_debugfs_fileop_request { /** @brief Physical address pointing at filename */
uint32_t fnameaddr; /** @brief Length in bytes of filename buffer */
uint32_t fnamelen; /** @brief Physical address pointing to data buffer */
uint32_t dataaddr; /** @brief Length in bytes of data buffer */
uint32_t datalen;
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Parameters for CMD_DEBUGFS_READ/WRITE command
*/ struct cmd_debugfs_dumpdir_request { /** @brief Physical address pointing to data buffer */
uint32_t dataaddr; /** @brief Length in bytes of data buffer */
uint32_t datalen;
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Response data for CMD_DEBUGFS_READ/WRITE command
*/ struct cmd_debugfs_fileop_response { /** @brief Always 0 */
uint32_t reserved; /** @brief Number of bytes read from or written to data buffer */
uint32_t nbytes;
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Response data for CMD_DEBUGFS_DUMPDIR command
*/ struct cmd_debugfs_dumpdir_response { /** @brief Always 0 */
uint32_t reserved; /** @brief Number of bytes read from or written to data buffer */
uint32_t nbytes;
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Request with #MRQ_DEBUGFS. * * The sender of an MRQ_DEBUGFS message uses #cmd to specify a debugfs * command to execute. Legal commands are the values of @ref * mrq_debugfs_commands. Each command requires a specific additional * payload of data. * * |command |payload| * |-------------------|-------| * |CMD_DEBUGFS_READ |fop | * |CMD_DEBUGFS_WRITE |fop | * |CMD_DEBUGFS_DUMPDIR|dumpdir|
*/ struct mrq_debugfs_request { /** @brief Sub-command (@ref mrq_debugfs_commands) */
uint32_t cmd; union { struct cmd_debugfs_fileop_request fop; struct cmd_debugfs_dumpdir_request dumpdir;
} BPMP_UNION_ANON;
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs
*/ struct mrq_debugfs_response { /** @brief Always 0 */
int32_t reserved; union { /** @brief Response data for CMD_DEBUGFS_READ OR * CMD_DEBUGFS_WRITE command
*/ struct cmd_debugfs_fileop_response fop; /** @brief Response data for CMD_DEBUGFS_DUMPDIR command */ struct cmd_debugfs_dumpdir_response dumpdir;
} BPMP_UNION_ANON;
} BPMP_ABI_PACKED;
/** * @ingroup MRQ_Codes * @def MRQ_DEBUG * @brief Interact with BPMP's debugfs file nodes. Use message payload * for exchanging data. This is functionally equivalent to * @ref MRQ_DEBUGFS. But the way in which data is exchanged is different. * When software running on CPU tries to read a debugfs file, * the file path and read data will be stored in message payload. * Since the message payload size is limited, a debugfs file * transaction might require multiple frames of data exchanged * between BPMP and CPU until the transaction completes. * * * Platforms: T194 * * Initiators: Any * * Targets: BPMP * * Request Payload: @ref mrq_debug_request * * Response Payload: @ref mrq_debug_response
*/
/** @ingroup Debugfs */ enum mrq_debug_commands { /** @brief Open required file for read operation */
CMD_DEBUG_OPEN_RO = 0, /** @brief Open required file for write operation */
CMD_DEBUG_OPEN_WO = 1, /** @brief Perform read */
CMD_DEBUG_READ = 2, /** @brief Perform write */
CMD_DEBUG_WRITE = 3, /** @brief Close file */
CMD_DEBUG_CLOSE = 4, /** @brief Not a command */
CMD_DEBUG_MAX
};
/** * @ingroup Debugfs * @brief Maximum number of files that can be open at a given time
*/ #define DEBUG_MAX_OPEN_FILES 1
/** * @ingroup Debugfs * @brief Maximum size of null-terminated file name string in bytes. * Value is derived from memory available in message payload while * using @ref cmd_debug_fopen_request * Value 4 corresponds to size of @ref mrq_debug_commands * in @ref mrq_debug_request. * 120 - 4 dbg_cmd(32bit) = 116
*/ #define DEBUG_FNAME_MAX_SZ (MSG_DATA_MIN_SZ - 4)
/** * @ingroup Debugfs * @brief Parameters for CMD_DEBUG_OPEN command
*/ struct cmd_debug_fopen_request { /** @brief File name - Null-terminated string with maximum * length @ref DEBUG_FNAME_MAX_SZ
*/ char name[DEBUG_FNAME_MAX_SZ];
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Response data for CMD_DEBUG_OPEN_RO/WO command
*/ struct cmd_debug_fopen_response { /** @brief Identifier for file access */
uint32_t fd; /** @brief Data length. File data size for READ command. * Maximum allowed length for WRITE command
*/
uint32_t datalen;
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Parameters for CMD_DEBUG_READ command
*/ struct cmd_debug_fread_request { /** @brief File access identifier received in response * to CMD_DEBUG_OPEN_RO request
*/
uint32_t fd;
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Maximum size of read data in bytes. * Value is derived from memory available in message payload while * using @ref cmd_debug_fread_response.
*/ #define DEBUG_READ_MAX_SZ (MSG_DATA_MIN_SZ - 4)
/** * @ingroup Debugfs * @brief Response data for CMD_DEBUG_READ command
*/ struct cmd_debug_fread_response { /** @brief Size of data provided in this response in bytes */
uint32_t readlen; /** @brief File data from seek position */ char data[DEBUG_READ_MAX_SZ];
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Maximum size of write data in bytes. * Value is derived from memory available in message payload while * using @ref cmd_debug_fwrite_request.
*/ #define DEBUG_WRITE_MAX_SZ (MSG_DATA_MIN_SZ - 12)
/** * @ingroup Debugfs * @brief Parameters for CMD_DEBUG_WRITE command
*/ struct cmd_debug_fwrite_request { /** @brief File access identifier received in response * to CMD_DEBUG_OPEN_RO request
*/
uint32_t fd; /** @brief Size of write data in bytes */
uint32_t datalen; /** @brief Data to be written */ char data[DEBUG_WRITE_MAX_SZ];
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Parameters for CMD_DEBUG_CLOSE command
*/ struct cmd_debug_fclose_request { /** @brief File access identifier received in response * to CMD_DEBUG_OPEN_RO request
*/
uint32_t fd;
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs * @brief Request with #MRQ_DEBUG. * * The sender of an MRQ_DEBUG message uses #cmd to specify a debugfs * command to execute. Legal commands are the values of @ref * mrq_debug_commands. Each command requires a specific additional * payload of data. * * |command |payload| * |-------------------|-------| * |CMD_DEBUG_OPEN_RO |fop | * |CMD_DEBUG_OPEN_WO |fop | * |CMD_DEBUG_READ |frd | * |CMD_DEBUG_WRITE |fwr | * |CMD_DEBUG_CLOSE |fcl |
*/ struct mrq_debug_request { /** @brief Sub-command (@ref mrq_debug_commands) */
uint32_t cmd; union { /** @brief Request payload for CMD_DEBUG_OPEN_RO/WO command */ struct cmd_debug_fopen_request fop; /** @brief Request payload for CMD_DEBUG_READ command */ struct cmd_debug_fread_request frd; /** @brief Request payload for CMD_DEBUG_WRITE command */ struct cmd_debug_fwrite_request fwr; /** @brief Request payload for CMD_DEBUG_CLOSE command */ struct cmd_debug_fclose_request fcl;
} BPMP_UNION_ANON;
} BPMP_ABI_PACKED;
/** * @ingroup Debugfs
*/ struct mrq_debug_response { union { /** @brief Response data for CMD_DEBUG_OPEN_RO/WO command */ struct cmd_debug_fopen_response fop; /** @brief Response data for CMD_DEBUG_READ command */ struct cmd_debug_fread_response frd;
} BPMP_UNION_ANON;
} BPMP_ABI_PACKED;
enum mrq_reset_commands { /** * @brief Assert module reset * * mrq_response::err is 0 if the operation was successful, or @n * -#BPMP_EINVAL if mrq_reset_request::reset_id is invalid @n * -#BPMP_EACCES if mrq master is not an owner of target domain reset @n * -#BPMP_ENOTSUP if target domain h/w state does not allow reset
*/
CMD_RESET_ASSERT = 1, /** * @brief Deassert module reset * * mrq_response::err is 0 if the operation was successful, or @n * -#BPMP_EINVAL if mrq_reset_request::reset_id is invalid @n * -#BPMP_EACCES if mrq master is not an owner of target domain reset @n * -#BPMP_ENOTSUP if target domain h/w state does not allow reset
*/
CMD_RESET_DEASSERT = 2, /** * @brief Assert and deassert the module reset * * mrq_response::err is 0 if the operation was successful, or @n * -#BPMP_EINVAL if mrq_reset_request::reset_id is invalid @n * -#BPMP_EACCES if mrq master is not an owner of target domain reset @n * -#BPMP_ENOTSUP if target domain h/w state does not allow reset
*/
CMD_RESET_MODULE = 3, /** * @brief Get the highest reset ID * * mrq_response::err is 0 if the operation was successful, or @n * -#BPMP_ENODEV if no reset domains are supported (number of IDs is 0)
*/
CMD_RESET_GET_MAX_ID = 4,
/** @brief Not part of ABI and subject to change */
CMD_RESET_MAX,
};
/** * @brief Request with MRQ_RESET * * Used by the sender of an #MRQ_RESET message to request BPMP to * assert or or deassert a given reset line.
*/ struct mrq_reset_request { /** @brief Reset action to perform (@ref mrq_reset_commands) */
uint32_t cmd; /** @brief Id of the reset to affected */
uint32_t reset_id;
} BPMP_ABI_PACKED;
/** * @brief Response for MRQ_RESET sub-command CMD_RESET_GET_MAX_ID. When * this sub-command is not supported, firmware will return -BPMP_EBADCMD * in mrq_response::err.
*/ struct cmd_reset_get_max_id_response { /** @brief Max reset id */
uint32_t max_id;
} BPMP_ABI_PACKED;
/** * @brief Response with MRQ_RESET * * Each sub-command supported by @ref mrq_reset_request may return * sub-command-specific data. Some do and some do not as indicated * in the following table * * | sub-command | payload | * |----------------------|------------------| * | CMD_RESET_ASSERT | - | * | CMD_RESET_DEASSERT | - | * | CMD_RESET_MODULE | - | * | CMD_RESET_GET_MAX_ID | reset_get_max_id |
*/ struct mrq_reset_response { union { struct cmd_reset_get_max_id_response reset_get_max_id;
} BPMP_UNION_ANON;
} BPMP_ABI_PACKED;
/** * @brief Serializable i2c request * * Instances of this structure are packed (little-endian) into * cmd_i2c_xfer_request::data_buf. Each instance represents a single * transaction (or a portion of a transaction with repeated starts) on * an i2c bus. * * Because these structures are packed, some instances are likely to * be misaligned. Additionally because #data is variable length, it is * not possible to iterate through a serialized list of these * structures without inspecting #len in each instance. It may be * easier to serialize or deserialize cmd_i2c_xfer_request::data_buf * manually rather than using this structure definition.
*/ struct serial_i2c_request { /** @brief I2C slave address */
uint16_t addr; /** @brief Bitmask of SERIALI2C_ flags */
uint16_t flags; /** @brief Length of I2C transaction in bytes */
uint16_t len; /** @brief For write transactions only, #len bytes of data */
uint8_t data[];
} BPMP_ABI_PACKED;
/** * @brief Trigger one or more i2c transactions
*/ struct cmd_i2c_xfer_request { /** * @brief Tegra PWR_I2C bus identifier * * @cond (bpmp_t234 || bpmp_t239 || bpmp_t194) * Must be set to 5. * @endcond (bpmp_t234 || bpmp_t239 || bpmp_t194) * @cond bpmp_th500 * Must be set to 1. * @endcond bpmp_th500 *
*/
uint32_t bus_id;
/** @brief Count of valid bytes in #data_buf*/
uint32_t data_size;
/** * @brief Container for data read from the i2c bus * * Processing an cmd_i2c_xfer_request::data_buf causes BPMP to execute * zero or more I2C reads. The data read from the bus is serialized * into #data_buf.
*/ struct cmd_i2c_xfer_response { /** @brief Count of valid bytes in #data_buf*/
uint32_t data_size; /** @brief I2c read data */
uint8_t data_buf[TEGRA_I2C_IPC_MAX_OUT_BUF_SIZE];
} BPMP_ABI_PACKED;
/** * @brief Request with #MRQ_I2C
*/ struct mrq_i2c_request { /** @brief Always CMD_I2C_XFER (i.e. 1) */
uint32_t cmd; /** @brief Parameters of the transfer request */ struct cmd_i2c_xfer_request xfer;
} BPMP_ABI_PACKED;
/** * @brief Response to #MRQ_I2C * * mrq_response:err is * 0: Success * -#BPMP_EBADCMD: if mrq_i2c_request::cmd is other than 1 * -#BPMP_EINVAL: if cmd_i2c_xfer_request does not contain correctly formatted request * -#BPMP_ENODEV: if cmd_i2c_xfer_request::bus_id is not supported by BPMP * -#BPMP_EACCES: if i2c transaction is not allowed due to firewall rules * -#BPMP_ETIMEDOUT: if i2c transaction times out * -#BPMP_ENXIO: if i2c slave device does not reply with ACK to the transaction * -#BPMP_EAGAIN: if ARB_LOST condition is detected by the i2c controller * -#BPMP_EIO: any other i2c controller error code than NO_ACK or ARB_LOST
*/ struct mrq_i2c_response { struct cmd_i2c_xfer_response xfer;
} BPMP_ABI_PACKED;
/** * @brief Response data to #MRQ_CLK sub-command CMD_CLK_IS_ENABLED
*/ struct cmd_clk_is_enabled_response { /** * @brief The state of the clock that has been successfully * requested with CMD_CLK_ENABLE or CMD_CLK_DISABLE by the * master invoking the command earlier. * * The state may not reflect the physical state of the clock * if there are some other masters requesting it to be * enabled. * * Value 0 is disabled, all other values indicate enabled.
*/
int32_t state;
} BPMP_ABI_PACKED;
struct mrq_clk_request { /** @brief Sub-command and clock id concatenated to 32-bit word. * - bits[31..24] is the sub-cmd. * - bits[23..0] is the clock id
*/
uint32_t cmd_and_id;
/** * @ingroup MRQ_Codes * @def MRQ_QUERY_ABI * @brief Check if an MRQ is implemented * * * Platforms: All * * Initiators: Any * * Targets: Any except DMCE * * Request Payload: @ref mrq_query_abi_request * * Response Payload: @ref mrq_query_abi_response
*/
/** * @ingroup ABI_info * @brief Request with MRQ_QUERY_ABI * * Used by #MRQ_QUERY_ABI call to check if MRQ code #mrq is supported * by the recipient.
*/ struct mrq_query_abi_request { /** @brief MRQ code to query */
uint32_t mrq;
} BPMP_ABI_PACKED;
/** * @ingroup ABI_info * @brief Response to MRQ_QUERY_ABI * * @note mrq_response::err of 0 indicates that the query was * successful, not that the MRQ itself is supported!
*/ struct mrq_query_abi_response { /** @brief 0 if queried MRQ is supported. Else, -#BPMP_ENODEV */
int32_t status;
} BPMP_ABI_PACKED;
/** * * @ingroup MRQ_Codes * @def MRQ_PG * @brief Control power-gating state of a partition. In contrast to * MRQ_PG_UPDATE_STATE, operations that change the power partition * state are NOT reference counted * * @cond (bpmp_t194 || bpmp_t186) * @note On T194 and earlier BPMP-FW forcefully turns off some partitions as * part of SC7 entry because their state cannot be adequately restored on exit. * Therefore, it is recommended to power off all domains via MRQ_PG prior to SC7 * entry. * See @ref bpmp_pdomain_ids for further detail. * @endcond (bpmp_t194 || bpmp_t186) * * * Platforms: T186, T194 * * Initiators: Any * * Targets: BPMP * * Request Payload: @ref mrq_pg_request * * Response Payload: @ref mrq_pg_response * * @addtogroup Powergating * @{
*/ enum mrq_pg_cmd { /** * @brief Check whether the BPMP driver supports the specified * request type * * mrq_response::err is 0 if the specified request is * supported and -#BPMP_ENODEV otherwise.
*/
CMD_PG_QUERY_ABI = 0,
/** * @brief Set the current state of specified power domain. The * possible values for power domains are defined in enum * pg_states * * mrq_response:err is * 0: Success * -#BPMP_EINVAL: Invalid request parameters
*/
CMD_PG_SET_STATE = 1,
/** * @brief Get the current state of specified power domain. The * possible values for power domains are defined in enum * pg_states * * mrq_response:err is * 0: Success * -#BPMP_EINVAL: Invalid request parameters
*/
CMD_PG_GET_STATE = 2,
/** * @brief Get the name string of specified power domain id. * * mrq_response:err is * 0: Success * -#BPMP_EINVAL: Invalid request parameters
*/
CMD_PG_GET_NAME = 3,
/** * @brief Get the highest power domain id in the system. Not * all IDs between 0 and max_id are valid IDs. * * mrq_response:err is * 0: Success * -#BPMP_EINVAL: Invalid request parameters
*/
CMD_PG_GET_MAX_ID = 4,
};
#define MRQ_PG_NAME_MAXLEN 40
enum pg_states { /** @brief Power domain is OFF */
PG_STATE_OFF = 0, /** @brief Power domain is ON */
PG_STATE_ON = 1, /** * @brief a legacy state where power domain and the clock * associated to the domain are ON. * This state is only supported in T186, and the use of it is * deprecated.
*/
PG_STATE_RUNNING = 2,
};
/** * @brief Response data to #MRQ_PG sub command #CMD_PG_GET_STATE
*/ struct cmd_pg_get_state_response { /** * @brief The state of the power partition that has been * succesfuly requested by the master earlier using #MRQ_PG * command #CMD_PG_SET_STATE. * * The state may not reflect the physical state of the power * partition if there are some other masters requesting it to * be enabled. * * See @ref pg_states for possible values
*/
uint32_t state;
} BPMP_ABI_PACKED;
/** * @brief Request with #MRQ_PG * * Used by the sender of an #MRQ_PG message to control power * partitions. The pg_request is split into several sub-commands. Some * sub-commands require no additional data. Others have a sub-command * specific payload * * |sub-command |payload | * |----------------------------|-----------------------| * |CMD_PG_QUERY_ABI | query_abi | * |CMD_PG_SET_STATE | set_state | * |CMD_PG_GET_STATE | - | * |CMD_PG_GET_NAME | - | * |CMD_PG_GET_MAX_ID | - | *
*/ struct mrq_pg_request {
uint32_t cmd;
uint32_t id; union { struct cmd_pg_query_abi_request query_abi; struct cmd_pg_set_state_request set_state;
} BPMP_UNION_ANON;
} BPMP_ABI_PACKED;
/** * @brief Response to MRQ_PG * * Each sub-command supported by @ref mrq_pg_request may return * sub-command-specific data. Some do and some do not as indicated in * the following table * * |sub-command |payload | * |----------------------------|-----------------------| * |CMD_PG_QUERY_ABI | - | * |CMD_PG_SET_STATE | - | * |CMD_PG_GET_STATE | get_state | * |CMD_PG_GET_NAME | get_name | * |CMD_PG_GET_MAX_ID | get_max_id |
*/ struct mrq_pg_response { union { struct cmd_pg_get_state_response get_state; struct cmd_pg_get_name_response get_name; struct cmd_pg_get_max_id_response get_max_id;
} BPMP_UNION_ANON;
} BPMP_ABI_PACKED;
/** @} Powergating */
/** * @ingroup MRQ_Codes * @def MRQ_THERMAL * @brief Interact with BPMP thermal framework * * * Platforms: T186, T194 * * Initiators: Any * * Targets: Any * * Request Payload: TODO * * Response Payload: TODO * * @addtogroup Thermal * * The BPMP firmware includes a thermal framework. Drivers within the * bpmp firmware register with the framework to provide thermal * zones. Each thermal zone corresponds to an entity whose temperature * can be measured. The framework also has a notion of trip points. A * trip point consists of a thermal zone id, a temperature, and a * callback routine. The framework invokes the callback when the zone * hits the indicated temperature. The BPMP firmware uses this thermal * framework interally to implement various temperature-dependent * functions. * * Software on the CPU can use #MRQ_THERMAL (with payload @ref * mrq_thermal_host_to_bpmp_request) to interact with the BPMP thermal * framework. The CPU must It can query the number of supported zones, * query zone temperatures, and set trip points. * * When a trip point set by the CPU gets crossed, BPMP firmware issues * an IPC to the CPU having mrq_request::mrq = #MRQ_THERMAL and a * payload of @ref mrq_thermal_bpmp_to_host_request. * @{
*/ enum mrq_thermal_host_to_bpmp_cmd { /** * @brief Check whether the BPMP driver supports the specified * request type. * * Host needs to supply request parameters. * * mrq_response::err is 0 if the specified request is * supported and -#BPMP_ENODEV otherwise.
*/
CMD_THERMAL_QUERY_ABI = 0,
/** * @brief Get the current temperature of the specified zone. * * Host needs to supply request parameters. * * mrq_response::err is * * 0: Temperature query succeeded. * * -#BPMP_EINVAL: Invalid request parameters. * * -#BPMP_ENOENT: No driver registered for thermal zone.. * * -#BPMP_EFAULT: Problem reading temperature measurement.
*/
CMD_THERMAL_GET_TEMP = 1,
/** * @brief Enable or disable and set the lower and upper * thermal limits for a thermal trip point. Each zone has * one trip point. * * Host needs to supply request parameters. Once the * temperature hits a trip point, the BPMP will send a message * to the CPU having MRQ=MRQ_THERMAL and * type=CMD_THERMAL_HOST_TRIP_REACHED * * mrq_response::err is * * 0: Trip successfully set. * * -#BPMP_EINVAL: Invalid request parameters. * * -#BPMP_ENOENT: No driver registered for thermal zone. * * -#BPMP_EFAULT: Problem setting trip point.
*/
CMD_THERMAL_SET_TRIP = 2,
/** * @brief Get the number of supported thermal zones. * * No request parameters required. * * mrq_response::err is always 0, indicating success.
*/
CMD_THERMAL_GET_NUM_ZONES = 3,
/** * @brief Get the thermtrip of the specified zone. * * Host needs to supply request parameters. * * mrq_response::err is * * 0: Valid zone information returned. * * -#BPMP_EINVAL: Invalid request parameters. * * -#BPMP_ENOENT: No driver registered for thermal zone. * * -#BPMP_ERANGE if thermtrip is invalid or disabled. * * -#BPMP_EFAULT: Problem reading zone information.
*/
CMD_THERMAL_GET_THERMTRIP = 4,
/** @brief: number of supported host-to-bpmp commands. May * increase in future
*/
CMD_THERMAL_HOST_TO_BPMP_NUM
};
enum mrq_thermal_bpmp_to_host_cmd { /** * @brief Indication that the temperature for a zone has * exceeded the range indicated in the thermal trip point * for the zone. * * BPMP needs to supply request parameters. Host only needs to * acknowledge.
*/
CMD_THERMAL_HOST_TRIP_REACHED = 100,
/** @brief: number of supported bpmp-to-host commands. May * increase in future
*/
CMD_THERMAL_BPMP_TO_HOST_NUM
};
/* * Host->BPMP request data for request type CMD_THERMAL_QUERY_ABI * * zone: Request type for which to check existence.
*/ struct cmd_thermal_query_abi_request {
uint32_t type;
} BPMP_ABI_PACKED;
/* * Host->BPMP request data for request type CMD_THERMAL_GET_TEMP * * zone: Number of thermal zone.
*/ struct cmd_thermal_get_temp_request {
uint32_t zone;
} BPMP_ABI_PACKED;
/* * BPMP->Host reply data for request CMD_THERMAL_GET_TEMP * * error: 0 if request succeeded. * -BPMP_EINVAL if request parameters were invalid. * -BPMP_ENOENT if no driver was registered for the specified thermal zone. * -BPMP_EFAULT for other thermal zone driver errors. * temp: Current temperature in millicelsius.
*/ struct cmd_thermal_get_temp_response {
int32_t temp;
} BPMP_ABI_PACKED;
/* * Host->BPMP request data for request type CMD_THERMAL_SET_TRIP * * zone: Number of thermal zone. * low: Temperature of lower trip point in millicelsius * high: Temperature of upper trip point in millicelsius * enabled: 1 to enable trip point, 0 to disable trip point
*/ struct cmd_thermal_set_trip_request {
uint32_t zone;
int32_t low;
int32_t high;
uint32_t enabled;
} BPMP_ABI_PACKED;
/* * BPMP->Host request data for request type CMD_THERMAL_HOST_TRIP_REACHED * * zone: Number of thermal zone where trip point was reached.
*/ struct cmd_thermal_host_trip_reached_request {
uint32_t zone;
} BPMP_ABI_PACKED;
/* * BPMP->Host reply data for request type CMD_THERMAL_GET_NUM_ZONES * * num: Number of supported thermal zones. The thermal zones are indexed * starting from zero.
*/ struct cmd_thermal_get_num_zones_response {
uint32_t num;
} BPMP_ABI_PACKED;
/* * Host->BPMP request data for request type CMD_THERMAL_GET_THERMTRIP * * zone: Number of thermal zone.
*/ struct cmd_thermal_get_thermtrip_request {
uint32_t zone;
} BPMP_ABI_PACKED;
/* * BPMP->Host reply data for request CMD_THERMAL_GET_THERMTRIP * * thermtrip: HW shutdown temperature in millicelsius.
*/ struct cmd_thermal_get_thermtrip_response {
int32_t thermtrip;
} BPMP_ABI_PACKED;
/* * Host->BPMP request data. * * Reply type is union mrq_thermal_bpmp_to_host_response. * * type: Type of request. Values listed in enum mrq_thermal_type. * data: Request type specific parameters.
*/ struct mrq_thermal_host_to_bpmp_request {
uint32_t type; union { struct cmd_thermal_query_abi_request query_abi; struct cmd_thermal_get_temp_request get_temp; struct cmd_thermal_set_trip_request set_trip; struct cmd_thermal_get_thermtrip_request get_thermtrip;
} BPMP_UNION_ANON;
} BPMP_ABI_PACKED;
/* * BPMP->Host request data. * * type: Type of request. Values listed in enum mrq_thermal_type. * data: Request type specific parameters.
*/ struct mrq_thermal_bpmp_to_host_request {
uint32_t type; union { struct cmd_thermal_host_trip_reached_request host_trip_reached;
} BPMP_UNION_ANON;
} BPMP_ABI_PACKED;
/* * Data in reply to a Host->BPMP request.
*/ union mrq_thermal_bpmp_to_host_response { struct cmd_thermal_get_temp_response get_temp; struct cmd_thermal_get_thermtrip_response get_thermtrip; struct cmd_thermal_get_num_zones_response get_num_zones;
} BPMP_ABI_PACKED;
/* * @brief Response to #MRQ_OC_STATUS * * throt_en: Value for each OC alarm where zero signifies throttle is * disabled, and non-zero throttle is enabled. * event_cnt: Total number of OC events for each OC alarm. * * mrq_response::err is 0 if the operation was successful and * -#BPMP_ENODEV otherwise.
*/ struct mrq_oc_status_response {
uint8_t throt_en[OC_STATUS_MAX_SIZE];
uint32_t event_cnt[OC_STATUS_MAX_SIZE];
} BPMP_ABI_PACKED;
/** * @brief Request with #MRQ_CPU_VHINT * * Used by #MRQ_CPU_VHINT call by CCPLEX to retrieve voltage hint data * from BPMP to memory space pointed by #addr. CCPLEX is responsible * to allocate sizeof(cpu_vhint_data) sized block of memory and * appropriately map it for BPMP before sending the request.
*/ struct mrq_cpu_vhint_request { /** @brief IOVA address for the #cpu_vhint_data */
uint32_t addr; /** @brief ID of the cluster whose data is requested */
uint32_t cluster_id;
} BPMP_ABI_PACKED;
/** * @brief Description of the CPU v/f relation * * Used by #MRQ_CPU_VHINT call to carry data pointed by * #mrq_cpu_vhint_request::addr
*/ struct cpu_vhint_data {
uint32_t ref_clk_hz; /**< reference frequency in Hz */
uint16_t pdiv; /**< post divider value */
uint16_t mdiv; /**< input divider value */
uint16_t ndiv_max; /**< fMAX expressed with max NDIV value */ /** table of ndiv values as a function of vINDEX (voltage index) */
uint16_t ndiv[80]; /** minimum allowed NDIV value */
uint16_t ndiv_min; /** minimum allowed voltage hint value (as in vINDEX) */
uint16_t vfloor; /** maximum allowed voltage hint value (as in vINDEX) */
uint16_t vceil; /** post-multiplier for vindex value */
uint16_t vindex_mult; /** post-divider for vindex value */
uint16_t vindex_div; /** reserved for future use */
uint16_t reserved[328];
} BPMP_ABI_PACKED;
/** * @brief An ABI compatibility mechanism * * BPMP_ABI_RATCHET_VALUE may increase for various reasons in a future * revision of this header file. * 1. That future revision deprecates some MRQ * 2. That future revision introduces a breaking change to an existing * MRQ or * 3. A bug is discovered in an existing implementation of the BPMP-FW * (or possibly one of its clients) which warrants deprecating that * implementation.
*/ #define BPMP_ABI_RATCHET_VALUE 3
/** * @brief Request with #MRQ_ABI_RATCHET. * * #ratchet should be #BPMP_ABI_RATCHET_VALUE from the ABI header * against which the requester was compiled. * * If ratchet is less than BPMP's #BPMP_ABI_RATCHET_VALUE, BPMP may * reply with mrq_response::err = -#BPMP_ERANGE to indicate that * BPMP-FW cannot interoperate correctly with the requester. Requester * should cease further communication with BPMP. * * Otherwise, err shall be 0.
*/ struct mrq_abi_ratchet_request { /** @brief Requester's ratchet value */
uint16_t ratchet;
};
/** * @brief Response to #MRQ_ABI_RATCHET * * #ratchet shall be #BPMP_ABI_RATCHET_VALUE from the ABI header * against which BPMP firwmare was compiled. * * If #ratchet is less than the requester's #BPMP_ABI_RATCHET_VALUE, * the requster must either interoperate with BPMP according to an ABI * header version with BPMP_ABI_RATCHET_VALUE = ratchet or cease * communication with BPMP. * * If mrq_response::err is 0 and ratchet is greater than or equal to the * requester's BPMP_ABI_RATCHET_VALUE, the requester should continue * normal operation.
*/ struct mrq_abi_ratchet_response { /** @brief BPMP's ratchet value */
uint16_t ratchet;
};
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