Release 4.12 include/soc/tegra/bpmp-abi.h
/*
* Copyright (c) 2014-2016, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _ABI_BPMP_ABI_H_
#define _ABI_BPMP_ABI_H_
#ifdef LK
#include <stdint.h>
#endif
#ifndef __ABI_PACKED
#define __ABI_PACKED __attribute__((packed))
#endif
#ifdef NO_GCC_EXTENSIONS
#define EMPTY char empty;
#define EMPTY_ARRAY 1
#else
#define EMPTY
#define EMPTY_ARRAY 0
#endif
#ifndef __UNION_ANON
#define __UNION_ANON
#endif
/**
* @file
*/
/**
* @defgroup MRQ MRQ Messages
* @brief Messages sent to/from BPMP via IPC
* @{
* @defgroup MRQ_Format Message Format
* @defgroup MRQ_Codes Message Request (MRQ) Codes
* @defgroup MRQ_Payloads Message Payloads
* @defgroup Error_Codes Error Codes
* @}
*/
/**
* @addtogroup MRQ_Format Message 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
* @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.
*
* @todo document the flags
*/
struct mrq_request {
/** @brief MRQ number of the request */
uint32_t mrq;
/** @brief flags for the request */
uint32_t flags;
} __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
*
* @todo document the flags
*/
struct mrq_response {
/** @brief error code for the MRQ request itself */
int32_t err;
/** @brief flags for the response */
uint32_t flags;
} __ABI_PACKED;
/**
* @ingroup MRQ_Format
* Minimum needed size for an IPC message buffer
*/
#define MSG_MIN_SZ 128
/**
* @ingroup MRQ_Format
* Minimum size guaranteed for data in an IPC message buffer
*/
#define MSG_DATA_MIN_SZ 120
/**
* @ingroup MRQ_Codes
* @name Legal MRQ codes
* These are the legal values for mrq_request::mrq
* @{
*/
#define MRQ_PING 0
#define MRQ_QUERY_TAG 1
#define MRQ_MODULE_LOAD 4
#define MRQ_MODULE_UNLOAD 5
#define MRQ_TRACE_MODIFY 7
#define MRQ_WRITE_TRACE 8
#define MRQ_THREADED_PING 9
#define MRQ_MODULE_MAIL 11
#define MRQ_DEBUGFS 19
#define MRQ_RESET 20
#define MRQ_I2C 21
#define MRQ_CLK 22
#define MRQ_QUERY_ABI 23
#define MRQ_PG_READ_STATE 25
#define MRQ_PG_UPDATE_STATE 26
#define MRQ_THERMAL 27
#define MRQ_CPU_VHINT 28
#define MRQ_ABI_RATCHET 29
#define MRQ_EMC_DVFS_LATENCY 31
#define MRQ_TRACE_ITER 64
/** @} */
/**
* @ingroup MRQ_Codes
* @brief Maximum MRQ code to be sent by CPU software to
* BPMP. Subject to change in future
*/
#define MAX_CPU_MRQ_ID 64
/**
* @addtogroup MRQ_Payloads Message Payloads
* @{
* @defgroup Ping
* @defgroup Query_Tag Query Tag
* @defgroup Module Loadable Modules
* @defgroup Trace
* @defgroup Debugfs
* @defgroup Reset
* @defgroup I2C
* @defgroup Clocks
* @defgroup ABI_info ABI Info
* @defgroup MC_Flush MC Flush
* @defgroup Powergating
* @defgroup Thermal
* @defgroup Vhint CPU Voltage hint
* @defgroup MRQ_Deprecated Deprecated MRQ messages
* @defgroup EMC
* @}
*/
/**
* @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;
} __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;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_QUERY_TAG
* @brief Query BPMP firmware's tag (i.e. version information)
*
* * Platforms: All
* * Initiators: CCPLEX
* * Targets: BPMP
* * Request Payload: @ref mrq_query_tag_request
* * Response Payload: N/A
*
*/
/**
* @ingroup Query_Tag
* @brief request with #MRQ_QUERY_TAG
*
* Used by #MRQ_QUERY_TAG call to ask BPMP to fill in the memory
* pointed by #addr with BPMP firmware header.
*
* The sender is reponsible for ensuring that #addr is mapped in to
* the recipient's address map.
*/
struct mrq_query_tag_request {
/** @brief base address to store the firmware header */
uint32_t addr;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_MODULE_LOAD
* @brief dynamically load a BPMP code module
*
* * Platforms: All
* * Initiators: CCPLEX
* * Targets: BPMP
* * Request Payload: @ref mrq_module_load_request
* * Response Payload: @ref mrq_module_load_response
*
* @note This MRQ is disabled on production systems
*
*/
/**
* @ingroup Module
* @brief request with #MRQ_MODULE_LOAD
*
* Used by #MRQ_MODULE_LOAD calls to ask the recipient to dynamically
* load the code located at #phys_addr and having size #size
* bytes. #phys_addr is treated as a void pointer.
*
* The recipient copies the code from #phys_addr to locally allocated
* memory prior to responding to this message.
*
* @todo document the module header format
*
* The sender is responsible for ensuring that the code is mapped in
* the recipient's address map.
*
*/
struct mrq_module_load_request {
/** @brief base address of the code to load. Treated as (void *) */
uint32_t phys_addr; /* (void *) */
/** @brief size in bytes of code to load */
uint32_t size;
} __ABI_PACKED;
/**
* @ingroup Module
* @brief response to #MRQ_MODULE_LOAD
*
* @todo document mrq_response::err
*/
struct mrq_module_load_response {
/** @brief handle to the loaded module */
uint32_t base;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_MODULE_UNLOAD
* @brief unload a previously loaded code module
*
* * Platforms: All
* * Initiators: CCPLEX
* * Targets: BPMP
* * Request Payload: @ref mrq_module_unload_request
* * Response Payload: N/A
*
* @note This MRQ is disabled on production systems
*/
/**
* @ingroup Module
* @brief request with #MRQ_MODULE_UNLOAD
*
* Used by #MRQ_MODULE_UNLOAD calls to request that a previously loaded
* module be unloaded.
*/
struct mrq_module_unload_request {
/** @brief handle of the module to unload */
uint32_t base;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_TRACE_MODIFY
* @brief modify the set of enabled trace events
*
* * Platforms: All
* * Initiators: CCPLEX
* * Targets: BPMP
* * Request Payload: @ref mrq_trace_modify_request
* * Response Payload: @ref mrq_trace_modify_response
*
* @note This MRQ is disabled on production systems
*/
/**
* @ingroup Trace
* @brief request with #MRQ_TRACE_MODIFY
*
* Used by %MRQ_TRACE_MODIFY calls to enable or disable specify trace
* events. #set takes precedence for any bit set in both #set and
* #clr.
*/
struct mrq_trace_modify_request {
/** @brief bit mask of trace events to disable */
uint32_t clr;
/** @brief bit mask of trace events to enable */
uint32_t set;
} __ABI_PACKED;
/**
* @ingroup Trace
* @brief response to #MRQ_TRACE_MODIFY
*
* Sent in repsonse to an #MRQ_TRACE_MODIFY message. #mask reflects the
* state of which events are enabled after the recipient acted on the
* message.
*
*/
struct mrq_trace_modify_response {
/** @brief bit mask of trace event enable states */
uint32_t mask;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_WRITE_TRACE
* @brief Write trace data to a buffer
*
* * Platforms: All
* * Initiators: CCPLEX
* * Targets: BPMP
* * Request Payload: @ref mrq_write_trace_request
* * Response Payload: @ref mrq_write_trace_response
*
* mrq_response::err depends on the @ref mrq_write_trace_request field
* values. err is -#BPMP_EINVAL if size is zero or area is NULL or
* area is in an illegal range. A positive value for err indicates the
* number of bytes written to area.
*
* @note This MRQ is disabled on production systems
*/
/**
* @ingroup Trace
* @brief request with #MRQ_WRITE_TRACE
*
* Used by MRQ_WRITE_TRACE calls to ask the recipient to copy trace
* data from the recipient's local buffer to the output buffer. #area
* is treated as a byte-aligned pointer in the recipient's address
* space.
*
* The sender is responsible for ensuring that the output
* buffer is mapped in the recipient's address map. The recipient is
* responsible for protecting its own code and data from accidental
* overwrites.
*/
struct mrq_write_trace_request {
/** @brief base address of output buffer */
uint32_t area;
/** @brief size in bytes of the output buffer */
uint32_t size;
} __ABI_PACKED;
/**
* @ingroup Trace
* @brief response to #MRQ_WRITE_TRACE
*
* Once this response is sent, the respondent will not access the
* output buffer further.
*/
struct mrq_write_trace_response {
/**
* @brief flag whether more data remains in local buffer
*
* Value is 1 if the entire local trace buffer has been
* drained to the outputbuffer. Value is 0 otherwise.
*/
uint32_t eof;
} __ABI_PACKED;
/** @private */
struct mrq_threaded_ping_request {
uint32_t challenge;
} __ABI_PACKED;
/** @private */
struct mrq_threaded_ping_response {
uint32_t reply;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_MODULE_MAIL
* @brief send a message to a loadable module
*
* * Platforms: All
* * Initiators: Any
* * Targets: BPMP
* * Request Payload: @ref mrq_module_mail_request
* * Response Payload: @ref mrq_module_mail_response
*
* @note This MRQ is disabled on production systems
*/
/**
* @ingroup Module
* @brief request with #MRQ_MODULE_MAIL
*/
struct mrq_module_mail_request {
/** @brief handle to the previously loaded module */
uint32_t base;
/** @brief module-specific mail payload
*
* The length of data[ ] is unknown to the BPMP core firmware
* but it is limited to the size of an IPC message.
*/
uint8_t data[EMPTY_ARRAY];
} __ABI_PACKED;
/**
* @ingroup Module
* @brief response to #MRQ_MODULE_MAIL
*/
struct mrq_module_mail_response {
/** @brief module-specific mail payload
*
* The length of data[ ] is unknown to the BPMP core firmware
* but it is limited to the size of an IPC message.
*/
uint8_t data[EMPTY_ARRAY];
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_DEBUGFS
* @brief Interact with BPMP's debugfs file nodes
*
* * Platforms: T186
* * Initiators: Any
* * Targets: BPMP
* * Request Payload: @ref mrq_debugfs_request
* * Response Payload: @ref mrq_debugfs_response
*/
/**
* @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 */
enum mrq_debugfs_commands {
CMD_DEBUGFS_READ = 1,
CMD_DEBUGFS_WRITE = 2,
CMD_DEBUGFS_DUMPDIR = 3,
CMD_DEBUGFS_MAX
};
/**
* @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;
} __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;
} __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;
} __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;
} __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 {
uint32_t cmd;
union {
struct cmd_debugfs_fileop_request fop;
struct cmd_debugfs_dumpdir_request dumpdir;
} __UNION_ANON;
} __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;
} __UNION_ANON;
} __ABI_PACKED;
/**
* @addtogroup Debugfs
* @{
*/
#define DEBUGFS_S_ISDIR (1 << 9)
#define DEBUGFS_S_IRUSR (1 << 8)
#define DEBUGFS_S_IWUSR (1 << 7)
/** @} */
/**
* @ingroup MRQ_Codes
* @def MRQ_RESET
* @brief reset an IP block
*
* * Platforms: T186
* * Initiators: Any
* * Targets: BPMP
* * Request Payload: @ref mrq_reset_request
* * Response Payload: N/A
*/
/**
* @ingroup Reset
*/
enum mrq_reset_commands {
CMD_RESET_ASSERT = 1,
CMD_RESET_DEASSERT = 2,
CMD_RESET_MODULE = 3,
CMD_RESET_MAX, /* not part of ABI and subject to change */
};
/**
* @ingroup Reset
* @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 (@enum mrq_reset_commands) */
uint32_t cmd;
/** @brief id of the reset to affected */
uint32_t reset_id;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_I2C
* @brief issue an i2c transaction
*
* * Platforms: T186
* * Initiators: Any
* * Targets: BPMP
* * Request Payload: @ref mrq_i2c_request
* * Response Payload: @ref mrq_i2c_response
*/
/**
* @addtogroup I2C
* @{
*/
#define TEGRA_I2C_IPC_MAX_IN_BUF_SIZE (MSG_DATA_MIN_SZ - 12)
#define TEGRA_I2C_IPC_MAX_OUT_BUF_SIZE (MSG_DATA_MIN_SZ - 4)
/** @} */
/**
* @ingroup I2C
* @name Serial I2C flags
* Use these flags with serial_i2c_request::flags
* @{
*/
#define SERIALI2C_TEN 0x0010
#define SERIALI2C_RD 0x0001
#define SERIALI2C_STOP 0x8000
#define SERIALI2C_NOSTART 0x4000
#define SERIALI2C_REV_DIR_ADDR 0x2000
#define SERIALI2C_IGNORE_NAK 0x1000
#define SERIALI2C_NO_RD_ACK 0x0800
#define SERIALI2C_RECV_LEN 0x0400
/** @} */
/** @ingroup I2C */
enum {
CMD_I2C_XFER = 1
};
/**
* @ingroup I2C
* @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[];
} __ABI_PACKED;
/**
* @ingroup I2C
* @brief trigger one or more i2c transactions
*/
struct cmd_i2c_xfer_request {
/** @brief valid bus number from mach-t186/i2c-t186.h*/
uint32_t bus_id;
/** @brief count of valid bytes in #data_buf*/
uint32_t data_size;
/** @brief serialized packed instances of @ref serial_i2c_request*/
uint8_t data_buf[TEGRA_I2C_IPC_MAX_IN_BUF_SIZE];
} __ABI_PACKED;
/**
* @ingroup I2C
* @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];
} __ABI_PACKED;
/**
* @ingroup I2C
* @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;
} __ABI_PACKED;
/**
* @ingroup I2C
* @brief response to #MRQ_I2C
*/
struct mrq_i2c_response {
struct cmd_i2c_xfer_response xfer;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_CLK
*
* * Platforms: T186
* * Initiators: Any
* * Targets: BPMP
* * Request Payload: @ref mrq_clk_request
* * Response Payload: @ref mrq_clk_response
* @addtogroup Clocks
* @{
*/
/**
* @name MRQ_CLK sub-commands
* @{
*/
enum {
CMD_CLK_GET_RATE = 1,
CMD_CLK_SET_RATE = 2,
CMD_CLK_ROUND_RATE = 3,
CMD_CLK_GET_PARENT = 4,
CMD_CLK_SET_PARENT = 5,
CMD_CLK_IS_ENABLED = 6,
CMD_CLK_ENABLE = 7,
CMD_CLK_DISABLE = 8,
CMD_CLK_GET_ALL_INFO = 14,
CMD_CLK_GET_MAX_CLK_ID = 15,
CMD_CLK_MAX,
};
/** @} */
#define MRQ_CLK_NAME_MAXLEN 40
#define MRQ_CLK_MAX_PARENTS 16
/** @private */
struct cmd_clk_get_rate_request {
EMPTY
} __ABI_PACKED;
struct cmd_clk_get_rate_response {
int64_t rate;
} __ABI_PACKED;
struct cmd_clk_set_rate_request {
int32_t unused;
int64_t rate;
} __ABI_PACKED;
struct cmd_clk_set_rate_response {
int64_t rate;
} __ABI_PACKED;
struct cmd_clk_round_rate_request {
int32_t unused;
int64_t rate;
} __ABI_PACKED;
struct cmd_clk_round_rate_response {
int64_t rate;
} __ABI_PACKED;
/** @private */
struct cmd_clk_get_parent_request {
EMPTY
} __ABI_PACKED;
struct cmd_clk_get_parent_response {
uint32_t parent_id;
} __ABI_PACKED;
struct cmd_clk_set_parent_request {
uint32_t parent_id;
} __ABI_PACKED;
struct cmd_clk_set_parent_response {
uint32_t parent_id;
} __ABI_PACKED;
/** @private */
struct cmd_clk_is_enabled_request {
EMPTY
} __ABI_PACKED;
struct cmd_clk_is_enabled_response {
int32_t state;
} __ABI_PACKED;
/** @private */
struct cmd_clk_enable_request {
EMPTY
} __ABI_PACKED;
/** @private */
struct cmd_clk_enable_response {
EMPTY
} __ABI_PACKED;
/** @private */
struct cmd_clk_disable_request {
EMPTY
} __ABI_PACKED;
/** @private */
struct cmd_clk_disable_response {
EMPTY
} __ABI_PACKED;
/** @private */
struct cmd_clk_get_all_info_request {
EMPTY
} __ABI_PACKED;
struct cmd_clk_get_all_info_response {
uint32_t flags;
uint32_t parent;
uint32_t parents[MRQ_CLK_MAX_PARENTS];
uint8_t num_parents;
uint8_t name[MRQ_CLK_NAME_MAXLEN];
} __ABI_PACKED;
/** @private */
struct cmd_clk_get_max_clk_id_request {
EMPTY
} __ABI_PACKED;
struct cmd_clk_get_max_clk_id_response {
uint32_t max_id;
} __ABI_PACKED;
/** @} */
/**
* @ingroup Clocks
* @brief request with #MRQ_CLK
*
* Used by the sender of an #MRQ_CLK message to control clocks. The
* clk_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_CLK_GET_RATE |- |
* |CMD_CLK_SET_RATE |clk_set_rate |
* |CMD_CLK_ROUND_RATE |clk_round_rate |
* |CMD_CLK_GET_PARENT |- |
* |CMD_CLK_SET_PARENT |clk_set_parent |
* |CMD_CLK_IS_ENABLED |- |
* |CMD_CLK_ENABLE |- |
* |CMD_CLK_DISABLE |- |
* |CMD_CLK_GET_ALL_INFO |- |
* |CMD_CLK_GET_MAX_CLK_ID |- |
*
*/
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;
union {
/** @private */
struct cmd_clk_get_rate_request clk_get_rate;
struct cmd_clk_set_rate_request clk_set_rate;
struct cmd_clk_round_rate_request clk_round_rate;
/** @private */
struct cmd_clk_get_parent_request clk_get_parent;
struct cmd_clk_set_parent_request clk_set_parent;
/** @private */
struct cmd_clk_enable_request clk_enable;
/** @private */
struct cmd_clk_disable_request clk_disable;
/** @private */
struct cmd_clk_is_enabled_request clk_is_enabled;
/** @private */
struct cmd_clk_get_all_info_request clk_get_all_info;
/** @private */
struct cmd_clk_get_max_clk_id_request clk_get_max_clk_id;
} __UNION_ANON;
} __ABI_PACKED;
/**
* @ingroup Clocks
* @brief response to MRQ_CLK
*
* Each sub-command supported by @ref mrq_clk_request may return
* sub-command-specific data. Some do and some do not as indicated in
* the following table
*
* |sub-command |payload |
* |----------------------------|------------------------|
* |CMD_CLK_GET_RATE |clk_get_rate |
* |CMD_CLK_SET_RATE |clk_set_rate |
* |CMD_CLK_ROUND_RATE |clk_round_rate |
* |CMD_CLK_GET_PARENT |clk_get_parent |
* |CMD_CLK_SET_PARENT |clk_set_parent |
* |CMD_CLK_IS_ENABLED |clk_is_enabled |
* |CMD_CLK_ENABLE |- |
* |CMD_CLK_DISABLE |- |
* |CMD_CLK_GET_ALL_INFO |clk_get_all_info |
* |CMD_CLK_GET_MAX_CLK_ID |clk_get_max_id |
*
*/
struct mrq_clk_response {
union {
struct cmd_clk_get_rate_response clk_get_rate;
struct cmd_clk_set_rate_response clk_set_rate;
struct cmd_clk_round_rate_response clk_round_rate;
struct cmd_clk_get_parent_response clk_get_parent;
struct cmd_clk_set_parent_response clk_set_parent;
/** @private */
struct cmd_clk_enable_response clk_enable;
/** @private */
struct cmd_clk_disable_response clk_disable;
struct cmd_clk_is_enabled_response clk_is_enabled;
struct cmd_clk_get_all_info_response clk_get_all_info;
struct cmd_clk_get_max_clk_id_response clk_get_max_clk_id;
} __UNION_ANON;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_QUERY_ABI
* @brief check if an MRQ is implemented
*
* * Platforms: All
* * Initiators: Any
* * Targets: Any
* * 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;
} __ABI_PACKED;
/**
* @ingroup ABI_info
* @brief response to MRQ_QUERY_ABI
*/
struct mrq_query_abi_response {
/** @brief 0 if queried MRQ is supported. Else, -#BPMP_ENODEV */
int32_t status;
} __ABI_PACKED;
/**
* @ingroup MRQ_Codes
* @def MRQ_PG_READ_STATE
* @brief read the power-gating state of a partition
*
* * Platforms: T186
* * Initiators: Any
* * Targets: BPMP
* * Request Payload: @ref mrq_pg_read_state_request
* * Response Payload: @ref mrq_pg_read_state_response
* @addtogroup Powergating
* @{
*/
/**
* @brief request with #MRQ_PG_READ_STATE
*
* Used by MRQ_PG_READ_STATE call to read the current state of a
* partition.
*/
struct mrq_pg_read_state_request {
/** @brief ID of partition */
uint32_t partition_id;
} __ABI_PACKED;
/**
* @brief response to MRQ_PG_READ_STATE
* @todo define possible errors.
*/
struct mrq_pg_read_state_response {
/** @brief read as don't care */
uint32_t sram_state;
/** @brief state of power partition
* * 0 : off
* * 1 : on
*/
uint32_t logic_state;
} __ABI_PACKED;
/** @} */
/**
* @ingroup MRQ_Codes
* @def MRQ_PG_UPDATE_STATE
* @brief modify the power-gating state of a partition
*
* * Platforms: T186
* * Initiators: Any
* * Targets: BPMP
* * Request Payload: @ref mrq_pg_update_state_request
* * Response Payload: N/A
* @addtogroup Powergating
* @{
*/
/**
* @brief request with mrq_pg_update_state_request
*
* Used by #MRQ_PG_UPDATE_STATE call to request BPMP to change the
* state of a power partition #partition_id.
*/
struct mrq_pg_update_state_request {
/** @brief ID of partition */
uint32_t partition_id;
/** @brief secondary control of power partition
* @details Ignored by many versions of the BPMP
* firmware. For maximum compatibility, set the value
* according to @logic_state
* * 0x1: power ON partition (@ref logic_state == 0x3)
* * 0x3: power OFF partition (@ref logic_state == 0x1)
*/
uint32_t sram_state;
/** @brief controls state of power partition, legal values are
* * 0x1 : power OFF partition
* * 0x3 : power ON partition
*/
uint32_t logic_state;
/** @brief change state of clocks of the power partition, legal values
* * 0x0 : do not change clock state
* * 0x1 : disable partition clocks (only applicable when
* @ref logic_state == 0x1)
* * 0x3 : enable partition clocks (only applicable when
* @ref logic_state == 0x3)
*/
uint32_t clock_state;
} __ABI_PACKED;
/** @} */
/**
* @ingroup MRQ_Codes
* @def MRQ_THERMAL
* @brief interact with BPMP thermal framework
*
* * Platforms: T186
* * 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: 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;
} __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;
} __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;
} __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;
} __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;
} __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;
} __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;
} __UNION_ANON;
} __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;
} __UNION_ANON;
} __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_num_zones_response get_num_zones;
} __ABI_PACKED;
/** @} */
/**
* @ingroup MRQ_Codes
* @def MRQ_CPU_VHINT
* @brief Query CPU voltage hint data
*
* * Platforms: T186
* * Initiators: CCPLEX
* * Targets: BPMP
* * Request Payload: @ref mrq_cpu_vhint_request
* * Response Payload: N/A
*
* @addtogroup Vhint CPU Voltage hint
* @{
*/
/**
* @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; /* struct cpu_vhint_data * */
/** @brief ID of the cluster whose data is requested */
uint32_t cluster_id; /* enum cluster_id */
} __ABI_PACKED;
/**
* @brief description of the CPU v/f relation
*
* Used by #MRQ_CPU_VHINT call to carry data pointed by #addr of
* struct mrq_cpu_vhint_request
*/
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];
} __ABI_PACKED;
/** @} */
/**
* @ingroup MRQ_Codes
* @def MRQ_ABI_RATCHET
* @brief ABI ratchet value query
*
* * Platforms: T186
* * Initiators: Any
* * Targets: BPMP
* * Request Payload: @ref mrq_abi_ratchet_request
* * Response Payload: @ref mrq_abi_ratchet_response
* @addtogroup ABI_info
* @{
*/
/**
* @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;
};
/** @} */
/**
* @ingroup MRQ_Codes
* @def MRQ_EMC_DVFS_LATENCY
* @brief query frequency dependent EMC DVFS latency
*
* * Platforms: T186
* * Initiators: CCPLEX
* * Targets: BPMP
* * Request Payload: N/A
* * Response Payload: @ref mrq_emc_dvfs_latency_response
* @addtogroup EMC
* @{
*/
/**
* @brief used by @ref mrq_emc_dvfs_latency_response
*/
struct emc_dvfs_latency {
/** @brief EMC frequency in kHz */
uint32_t freq;
/** @brief EMC DVFS latency in nanoseconds */
uint32_t latency;
} __ABI_PACKED;
#define EMC_DVFS_LATENCY_MAX_SIZE 14
/**
* @brief response to #MRQ_EMC_DVFS_LATENCY
*/
struct mrq_emc_dvfs_latency_response {
/** @brief the number valid entries in #pairs */
uint32_t num_pairs;
/** @brief EMC <frequency, latency> information */
struct emc_dvfs_latency pairs[EMC_DVFS_LATENCY_MAX_SIZE];
} __ABI_PACKED;
/** @} */
/**
* @ingroup MRQ_Codes
* @def MRQ_TRACE_ITER
* @brief manage the trace iterator
*
* * Platforms: All
* * Initiators: CCPLEX
* * Targets: BPMP
* * Request Payload: N/A
* * Response Payload: @ref mrq_trace_iter_request
* @addtogroup Trace
* @{
*/
enum {
/** @brief (re)start the tracing now. Ignore older events */
TRACE_ITER_INIT = 0,
/** @brief clobber all events in the trace buffer */
TRACE_ITER_CLEAN = 1
};
/**
* @brief request with #MRQ_TRACE_ITER
*/
struct mrq_trace_iter_request {
/** @brief TRACE_ITER_INIT or TRACE_ITER_CLEAN */
uint32_t cmd;
} __ABI_PACKED;
/** @} */
/*
* 4. Enumerations
*/
/*
* 4.1 CPU enumerations
*
* See <mach-t186/system-t186.h>
*
* 4.2 CPU Cluster enumerations
*
* See <mach-t186/system-t186.h>
*
* 4.3 System low power state enumerations
*
* See <mach-t186/system-t186.h>
*/
/*
* 4.4 Clock enumerations
*
* For clock enumerations, see <mach-t186/clk-t186.h>
*/
/*
* 4.5 Reset enumerations
*
* For reset enumerations, see <mach-t186/reset-t186.h>
*/
/*
* 4.6 Thermal sensor enumerations
*
* For thermal sensor enumerations, see <mach-t186/thermal-t186.h>
*/
/**
* @defgroup Error_Codes
* Negative values for mrq_response::err generally indicate some
* error. The ABI defines the following error codes. Negating these
* defines is an exercise left to the user.
* @{
*/
/** @brief No such file or directory */
#define BPMP_ENOENT 2
/** @brief No MRQ handler */
#define BPMP_ENOHANDLER 3
/** @brief I/O error */
#define BPMP_EIO 5
/** @brief Bad sub-MRQ command */
#define BPMP_EBADCMD 6
/** @brief Not enough memory */
#define BPMP_ENOMEM 12
/** @brief Permission denied */
#define BPMP_EACCES 13
/** @brief Bad address */
#define BPMP_EFAULT 14
/** @brief No such device */
#define BPMP_ENODEV 19
/** @brief Argument is a directory */
#define BPMP_EISDIR 21
/** @brief Invalid argument */
#define BPMP_EINVAL 22
/** @brief Timeout during operation */
#define BPMP_ETIMEDOUT 23
/** @brief Out of range */
#define BPMP_ERANGE 34
/** @} */
/** @} */
#endif
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Thierry Reding | 1555 | 100.00% | 1 | 100.00% |
| Total | 1555 | 100.00% | 1 | 100.00% |
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.