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nvidia-open-gpu-kernel-modules/kernel-open/nvidia/export_nvswitch.h

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/*
* SPDX-FileCopyrightText: Copyright (c) 2016-2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: MIT
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef _NVSWITCH_EXPORT_H_
#define _NVSWITCH_EXPORT_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "nv_stdarg.h"
#include "nvlink_common.h"
#include "ioctl_common_nvswitch.h"
#define NVSWITCH_DRIVER_NAME "nvidia-nvswitch"
#define NVSWITCH_MAX_BARS 1
#define NVSWITCH_DEVICE_INSTANCE_MAX 64
#define PCI_CLASS_BRIDGE_NVSWITCH 0x0680
#ifndef PCI_VENDOR_ID_NVIDIA
#define PCI_VENDOR_ID_NVIDIA 0x10DE
#endif
#define PCI_ADDR_OFFSET_VENDOR 0
#define PCI_ADDR_OFFSET_DEVID 2
#define NVSWITCH_NSEC_PER_SEC 1000000000ULL
#define NVSWITCH_DBG_LEVEL_MMIO 0x0
#define NVSWITCH_DBG_LEVEL_NOISY 0x1
#define NVSWITCH_DBG_LEVEL_INFO 0x2
#define NVSWITCH_DBG_LEVEL_SETUP 0x3
#define NVSWITCH_DBG_LEVEL_WARN 0x4
#define NVSWITCH_DBG_LEVEL_ERROR 0x5
#define NVSWITCH_LOG_BUFFER_SIZE 512
#define NVSWITCH_DMA_DIR_TO_SYSMEM 0
#define NVSWITCH_DMA_DIR_FROM_SYSMEM 1
#define NVSWITCH_DMA_DIR_BIDIRECTIONAL 2
#define NVSWITCH_I2C_CMD_READ 0
#define NVSWITCH_I2C_CMD_WRITE 1
#define NVSWITCH_I2C_CMD_SMBUS_READ 2
#define NVSWITCH_I2C_CMD_SMBUS_WRITE 3
#define NVSWITCH_I2C_CMD_SMBUS_QUICK_READ 4
#define NVSWITCH_I2C_CMD_SMBUS_QUICK_WRITE 5
typedef struct nvswitch_device nvswitch_device;
typedef struct NVSWITCH_CLIENT_EVENT NVSWITCH_CLIENT_EVENT;
/*
* @Brief : The interface will check if the client's version is supported by the
* driver.
*
* @param[in] user_version Version of the interface that the client is
* compiled with.
* @param[out] kernel_version Version of the interface that the kernel driver
* is compiled with. This information will be
* filled even if the CTRL call returns
* -NVL_ERR_NOT_SUPPORTED due to version mismatch.
* @param[in] length Version string buffer length
*
* @returns NVL_SUCCESS if the client is using compatible
* interface.
* -NVL_ERR_NOT_SUPPORTED if the client is using
* incompatible interface.
* Or, Other NVL_XXX status value.
*/
NvlStatus
nvswitch_lib_check_api_version
(
const char *user_version,
char *kernel_version,
NvU32 length
);
/*
* @Brief : Allocate a new nvswitch lib device instance.
*
* @Description : Creates and registers a new nvswitch device and registers
* with the nvlink library. This only initializes software state,
* it does not initialize the hardware state.
*
* @param[in] pci_domain pci domain of the device
* @param[in] pci_bus pci bus of the device
* @param[in] pci_device pci device of the device
* @param[in] pci_func pci function of the device
* @param[in] device_id pci device ID of the device
* @param[in] os_handle Device handle used to interact with OS layer
* @param[in] os_instance instance number of this device
* @param[out] device return device handle for interfacing with library
*
* @returns NVL_SUCCESS if the action succeeded
* an NVL error code otherwise
*/
NvlStatus
nvswitch_lib_register_device
(
NvU16 pci_domain,
NvU8 pci_bus,
NvU8 pci_device,
NvU8 pci_func,
NvU16 device_id,
void *os_handle,
NvU32 os_instance,
nvswitch_device **device
);
/*
* @Brief : Clean-up the software state for a nvswitch device.
*
* @Description :
*
* @param[in] device device handle to destroy
*
* @returns none
*/
void
nvswitch_lib_unregister_device
(
nvswitch_device *device
);
/*
* @Brief : Initialize the hardware for a nvswitch device.
*
* @Description :
*
* @param[in] device a reference to the device to initialize
*
* @returns NVL_SUCCESS if the action succeeded
* -NVL_BAD_ARGS if bad arguments provided
* -NVL_PCI_ERROR if bar info unable to be retrieved
*/
NvlStatus
nvswitch_lib_initialize_device
(
nvswitch_device *device
);
/*
* @Brief : Shutdown the hardware for a nvswitch device.
*
* @Description :
*
* @param[in] device a reference to the device to initialize
*
* @returns NVL_SUCCESS if the action succeeded
* -NVL_BAD_ARGS if bad arguments provided
* -NVL_PCI_ERROR if bar info unable to be retrieved
*/
NvlStatus
nvswitch_lib_shutdown_device
(
nvswitch_device *device
);
/*
* @Brief Control call (ioctl) interface.
*
* @param[in] device device to operate on
* @param[in] cmd Enumerated command to execute.
* @param[in] params Params structure to pass to the command.
* @param[in] params_size Size of the parameter structure.
* @param[in] osPrivate The private data structure for OS.
*
* @return NVL_SUCCESS on a successful command
* -NVL_NOT_FOUND if target device unable to be found
* -NVL_BAD_ARGS if an invalid cmd is provided
* -NVL_BAD_ARGS if a null arg is provided
* -NVL_ERR_GENERIC otherwise
*/
NvlStatus nvswitch_lib_ctrl
(
nvswitch_device *device,
NvU32 cmd,
void *params,
NvU64 size,
void *osPrivate
);
/*
* @Brief: Retrieve PCI information for a switch based from device instance
*
* @Description :
*
* @param[in] lib_handle device to query
* @param[out] pciInfo return pointer to nvswitch lib copy of device info
*/
void nvswitch_lib_get_device_info
(
nvswitch_device *lib_handle,
struct nvlink_pci_info **pciInfo
);
/*
* @Brief: Retrieve BIOS version for an nvswitch device
*
* @Description: For devices with a BIOS, this retrieves the BIOS version.
*
* @param[in] device device to query
* @param[out] version BIOS version is stored here
*
* @returns NVL_SUCCESS BIOS version was retrieved successfully
* -NVL_BAD_ARGS an invalid device is provided
* -NVL_ERR_INVALID_STATE an error occurred reading BIOS info
* -NVL_ERR_NOT_SUPPORTED device doesn't support this feature
*/
NvlStatus
nvswitch_lib_get_bios_version
(
nvswitch_device *device,
NvU64 *version
);
/*
* @Brief: Retrieve whether the device supports PCI pin interrupts
*
* @Description: Returns whether the device can use PCI pin IRQs
*
*
* @returns NV_TRUE device can use PCI pin IRQs
* NV_FALSE device cannot use PCI pin IRQs
*/
NvlStatus
nvswitch_lib_use_pin_irq
(
nvswitch_device *device
);
/*
* @Brief: Load platform information (emulation, simulation etc.).
*
* @param[in] lib_handle device
*
* @return NVL_SUCCESS on a successful command
* -NVL_BAD_ARGS if an invalid device is provided
*/
NvlStatus nvswitch_lib_load_platform_info
(
nvswitch_device *lib_handle
);
/*
* @Brief : Enable interrupts for this device
*
* @Description :
*
* @param[in] device device to enable
*
* @returns NVL_SUCCESS
* -NVL_PCI_ERROR if there was a register access error
*/
void
nvswitch_lib_enable_interrupts
(
nvswitch_device *device
);
/*
* @Brief : Disable interrupts for this device
*
* @Description :
*
* @param[in] device device to enable
*
* @returns NVL_SUCCESS
* -NVL_PCI_ERROR if there was a register access error
*/
void
nvswitch_lib_disable_interrupts
(
nvswitch_device *device
);
/*
* @Brief : Check if interrupts are pending on this device
*
* @Description :
*
* @param[in] device device to check
*
* @returns NVL_SUCCESS if there were no errors and interrupts were handled
* -NVL_BAD_ARGS if bad arguments provided
* -NVL_PCI_ERROR if there was a register access error
* -NVL_MORE_PROCESSING_REQUIRED no interrupts were found for this device
*/
NvlStatus
nvswitch_lib_check_interrupts
(
nvswitch_device *device
);
/*
* @Brief : Services interrupts for this device
*
* @Description :
*
* @param[in] device device to service
*
* @returns NVL_SUCCESS if there were no errors and interrupts were handled
* -NVL_BAD_ARGS if bad arguments provided
* -NVL_PCI_ERROR if there was a register access error
* -NVL_MORE_PROCESSING_REQUIRED no interrupts were found for this device
*/
NvlStatus
nvswitch_lib_service_interrupts
(
nvswitch_device *device
);
/*
* @Brief : Get depth of error logs and port event log
*
* @Description :
*
* @param[in] device device to check
*
* @param[out] fatal Count of fatal errors
* @param[out] nonfatal Count of non-fatal errors
* @param[out] portEvent Count of port events
*
* @returns NVL_SUCCESS if there were no errors and interrupts were handled
* -NVL_NOT_FOUND if bad arguments provided
*/
NvlStatus
nvswitch_lib_get_log_count
(
nvswitch_device *device,
NvU32 *fatal, NvU32 *nonfatal, NvU32 *portEvent
);
/*
* @Brief : Periodic thread-based dispatcher for kernel functions
*
* @Description : Its purpose is to do any background subtasks (data collection, thermal
* monitoring, etc. These subtasks may need to run at varying intervals, and
* may even wish to adjust their execution period based on other factors.
* Each subtask's entry notes the last time it was executed and its desired
* execution period. This function returns back to the dispatcher the desired
* time interval before it should be called again.
*
* @param[in] device The device to run background tasks on
*
* @returns nsec interval to wait before the next call.
*/
NvU64
nvswitch_lib_deferred_task_dispatcher
(
nvswitch_device *device
);
/*
* @Brief : Perform post init tasks
*
* @Description : Any device initialization/tests which need the device to be
* initialized to a sane state go here.
*
* @param[in] device The device to run the post-init on
*
* @returns returns NvlStatus code, see nvlink_errors.h
*/
NvlStatus
nvswitch_lib_post_init_device
(
nvswitch_device *device
);
/*
* @Brief : Perform post init tasks for a blacklisted device
*
* @Description : Any initialization tasks that should be run after a
* blacklisted item should go here.
*
* @param[in] device The device to run the post-init-blacklist on
*
* @returns void
*/
void
nvswitch_lib_post_init_blacklist_device
(
nvswitch_device *device
);
/*
* @Brief : Get the UUID of the device
*
* @Description : Copies out the device's UUID into the uuid field
*
* @param[in] device The device to get the UUID from
*
* @param[out] uuid A pointer to a uuid struct in which the UUID is written to
*
* @returns void
*/
void
nvswitch_lib_get_uuid
(
nvswitch_device *device,
NvUuid *uuid
);
/*
* @Brief : Get the Physical ID of the device
*
* @Description : Copies out the device's Physical ID into the phys_id field
*
* @param[in] device The device to get the UUID from
*
* @param[out] phys_id A pointer to a NvU32 which the physical ID is written to
*
* @returns NVL_SUCCESS if successful
* -NVL_BAD_ARGS if bad arguments provided
*/
NvlStatus
nvswitch_lib_get_physid
(
nvswitch_device *device,
NvU32 *phys_id
);
/*
* @Brief : Read the Fabric State for a nvswitch device.
*
* @Description : Returns the Fabric State for the device
*
* @param[in] device a reference to the device
* @param[in] *ptrs references to the fabric state
*
* @returns NVL_SUCCESS if the action succeeded
* -NVL_BAD_ARGS if bad arguments provided
*/
NvlStatus
nvswitch_lib_read_fabric_state
(
nvswitch_device *device,
NVSWITCH_DEVICE_FABRIC_STATE *device_fabric_state,
NVSWITCH_DEVICE_BLACKLIST_REASON *device_blacklist_reason,
NVSWITCH_DRIVER_FABRIC_STATE *driver_fabric_state
);
/*
* @Brief : Validates PCI device id
*
* @Description : Validates PCI device id
*
* @param[in] device The device id to be validated
*
* @returns True if device id is valid
*/
NvBool
nvswitch_lib_validate_device_id
(
NvU32 device_id
);
/*
* @Brief : Gets an event if it exists in the Event list
*
* @Description : Gets an event if it is in the Device's Client
* Event list
*
* @param[in] device Device to operate on
* @param[in] osPrivate The private data structure for the OS
* @param[out] ppClientEvent Double pointer to client event
*
* @returns NVL_SUCCESS if client event found
* -NVL_BAD_ARGS if bad arguments provided
* -NVL_NOT_FOUND if no client event found
*/
NvlStatus
nvswitch_lib_get_client_event
(
nvswitch_device *device,
void *osPrivate,
NVSWITCH_CLIENT_EVENT **ppClientEvent
);
/*
* @Brief : Adds a single entry into the Event list
*
* @Description : Adds an entry into the front of the Device's
* Client Event List
*
* @param[in] device Device to operate on
* @param[in] osPrivate The private data structure for OS
* @param[in] pParams The parameters for the client event
*
* @returns NVL_SUCCESS if event added
* -NVL_BAD_ARGS if bad arguments provided
* -NVL_NO_MEM if allocation fails
*/
NvlStatus
nvswitch_lib_add_client_event
(
nvswitch_device *device,
void *osPrivate,
NvU32 eventId
);
/*
* @Brief : Removes entries from the Event list
*
* @Description : Removes the entries associated with osPrivate
* from the Device's Client Event List
*
* @param[in] device Device to operate on
* @param[in] osPrivate The private data structure for OS
*
* @returns NVL_SUCCESS if event removed
*/
NvlStatus
nvswitch_lib_remove_client_events
(
nvswitch_device *device,
void *osPrivate
);
/*
* @Brief : Notifies all events with a matching event Id in the Client Event list
*
* @Description : Notifies all events with a matching event Id in the Client Event list
*
* @param[in] device Device to operate on
* @param[in] eventId The event ID to notify
*
* @returns NVL_SUCCESS if arguments are valid
* -NVL_BAD_ARGS if bad arguments provided
*/
NvlStatus
nvswitch_lib_notify_client_events
(
nvswitch_device *device,
NvU32 eventId
);
/*
* @Brief : Gets a mask of valid I2C ports for the device
*
* @Description : Gets a mask of valid I2C ports for the device
*
* @param[in] device Device to operate on
* @param[out] validPortsMask A pointer to a mask of valid ports
*
* @returns NVL_SUCCESS if successfuly
* -NVL_BAD_ARGS if bad arguments provided
*/
NvlStatus
nvswitch_lib_get_valid_ports_mask
(
nvswitch_device *device,
NvU32 *validPortsMask
);
/*
* @Brief : Returns a boolean if the I2C interface is supported for the device
*
* @Description : Returns a boolean if the I2C interface is supported for the device
*
* @param[in] device Device to operate on
*
* @returns NV_TRUE device can use the I2C interface
* NV_FALSE device cannot use the I2C interface
*/
NvBool
nvswitch_lib_is_i2c_supported
(
nvswitch_device *device
);
/*
* @Brief : Performs an I2C transaction
*
* @Description : Performs an I2C transaction
*
* @param[in] device Device to operate on
* @param[in] port Port to issue I2C transaction
* @param[in] type Type of I2C transaction
* @param[in] addr Device address to perform I2C transaction on
* @param[in] command I2C command to perform on
* @param[in] len Length of the I2C transaction message
* @param[in/out] pData A pointer to the buffer containing the input/output data
*
* @returns NVL_SUCCESS if I2C transaction completes
* -NVL_BAD_ARGS if bad arguments provided
* -NVL_ERR_INVALID_STATE if something internal went wrong
*/
NvlStatus
nvswitch_lib_i2c_transfer
(
nvswitch_device *device,
NvU32 port,
NvU8 type,
NvU8 addr,
NvU8 command,
NvU32 len,
NvU8 *pData
);
/*
* Returns count of registered NvSwitch devices.
*/
NvU32
nvswitch_os_get_device_count
(
void
);
/*
* Get current time in nanoseconds
* The time is since epoch time (midnight UTC of January 1, 1970)
*/
NvU64
nvswitch_os_get_platform_time
(
void
);
NvU64
nvswitch_os_get_platform_time_epoch
(
void
);
#if (defined(_WIN32) || defined(_WIN64))
#define NVSWITCH_PRINT_ATTRIB(str, arg1)
#else
#define NVSWITCH_PRINT_ATTRIB(str, arg1) \
__attribute__ ((format (printf, (str), (arg1))))
#endif // (defined(_WIN32) || defined(_WIN64))
/*
* printf wrapper
*/
void
NVSWITCH_PRINT_ATTRIB(2, 3)
nvswitch_os_print
(
int log_level,
const char *pFormat,
...
);
/*
* "Registry" interface for dword
*/
NvlStatus
nvswitch_os_read_registry_dword
(
void *os_handle,
const char *name,
NvU32 *data
);
/*
* "Registry" interface for binary data
*/
NvlStatus
nvswitch_os_read_registery_binary
(
void *os_handle,
const char *name,
NvU8 *data,
NvU32 length
);
NvBool
nvswitch_os_is_uuid_in_blacklist
(
NvUuid *uuid
);
/*
* Override platform/simulation settings for cases
*/
void
nvswitch_os_override_platform
(
void *os_handle,
NvBool *rtlsim
);
/*
* Memory management interface
*/
NvlStatus
nvswitch_os_alloc_contig_memory
(
void *os_handle,
void **virt_addr,
NvU32 size,
NvBool force_dma32
);
void
nvswitch_os_free_contig_memory
(
void *os_handle,
void *virt_addr,
NvU32 size
);
NvlStatus
nvswitch_os_map_dma_region
(
void *os_handle,
void *cpu_addr,
NvU64 *dma_handle,
NvU32 size,
NvU32 direction
);
NvlStatus
nvswitch_os_unmap_dma_region
(
void *os_handle,
void *cpu_addr,
NvU64 dma_handle,
NvU32 size,
NvU32 direction
);
NvlStatus
nvswitch_os_set_dma_mask
(
void *os_handle,
NvU32 dma_addr_width
);
NvlStatus
nvswitch_os_sync_dma_region_for_cpu
(
void *os_handle,
NvU64 dma_handle,
NvU32 size,
NvU32 direction
);
NvlStatus
nvswitch_os_sync_dma_region_for_device
(
void *os_handle,
NvU64 dma_handle,
NvU32 size,
NvU32 direction
);
void *
nvswitch_os_malloc_trace
(
NvLength size,
const char *file,
NvU32 line
);
void
nvswitch_os_free
(
void *pMem
);
NvLength
nvswitch_os_strlen
(
const char *str
);
char*
nvswitch_os_strncpy
(
char *pDest,
const char *pSrc,
NvLength length
);
int
nvswitch_os_strncmp
(
const char *s1,
const char *s2,
NvLength length
);
char*
nvswitch_os_strncat
(
char *s1,
const char *s2,
NvLength length
);
void *
nvswitch_os_memset
(
void *pDest,
int value,
NvLength size
);
void *
nvswitch_os_memcpy
(
void *pDest,
const void *pSrc,
NvLength size
);
int
nvswitch_os_memcmp
(
const void *s1,
const void *s2,
NvLength size
);
/*
* Memory read / write interface
*/
NvU32
nvswitch_os_mem_read32
(
const volatile void * pAddress
);
void
nvswitch_os_mem_write32
(
volatile void *pAddress,
NvU32 data
);
NvU64
nvswitch_os_mem_read64
(
const volatile void *pAddress
);
void
nvswitch_os_mem_write64
(
volatile void *pAddress,
NvU64 data
);
/*
* Interface to write formatted output to sized buffer
*/
int
nvswitch_os_snprintf
(
char *pString,
NvLength size,
const char *pFormat,
...
);
/*
* Interface to write formatted output to sized buffer
*/
int
nvswitch_os_vsnprintf
(
char *buf,
NvLength size,
const char *fmt,
va_list arglist
);
/*
* Debug assert and log interface
*/
void
nvswitch_os_assert_log
(
const char *pFormat,
...
);
/*
* Interface to sleep for specified milliseconds. Yields the CPU to scheduler.
*/
void
nvswitch_os_sleep
(
unsigned int ms
);
NvlStatus
nvswitch_os_acquire_fabric_mgmt_cap
(
void *osPrivate,
NvU64 capDescriptor
);
int
nvswitch_os_is_fabric_manager
(
void *osPrivate
);
int
nvswitch_os_is_admin
(
void
);
NvlStatus
nvswitch_os_get_os_version
(
NvU32 *pMajorVer,
NvU32 *pMinorVer,
NvU32 *pBuildNum
);
NvlStatus
nvswitch_os_get_pid
(
NvU32 *pPid
);
void
nvswitch_lib_smbpbi_log_sxid
(
nvswitch_device *device,
NvU32 sxid,
const char *pFormat,
...
);
/*!
* @brief: OS Specific handling to add an event.
*/
NvlStatus
nvswitch_os_add_client_event
(
void *osHandle,
void *osPrivate,
NvU32 eventId
);
/*!
* @brief: OS specific handling to remove all events corresponding to osPrivate.
*/
NvlStatus
nvswitch_os_remove_client_event
(
void *osHandle,
void *osPrivate
);
/*!
* @brief: OS specific handling to notify an event.
*/
NvlStatus
nvswitch_os_notify_client_event
(
void *osHandle,
void *osPrivate,
NvU32 eventId
);
/*!
* @brief: Gets OS specific support for the REGISTER_EVENTS ioctl
*/
NvlStatus
nvswitch_os_get_supported_register_events_params
(
NvBool *bSupportsManyEvents,
NvBool *bUserSuppliesOsData
);
#ifdef __cplusplus
}
#endif
#endif //_NVSWITCH_EXPORT_H_