255 lines
11 KiB
Plaintext
255 lines
11 KiB
Plaintext
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What: /sys/kernel/debug/habanalabs/hl<n>/addr
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Sets the device address to be used for read or write through
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PCI bar, or the device VA of a host mapped memory to be read or
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written directly from the host. The latter option is allowed
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only when the IOMMU is disabled.
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The acceptable value is a string that starts with "0x"
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What: /sys/kernel/debug/habanalabs/hl<n>/clk_gate
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Date: May 2020
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KernelVersion: 5.8
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Contact: ogabbay@kernel.org
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Description: This setting is now deprecated as clock gating is handled solely by the f/w
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What: /sys/kernel/debug/habanalabs/hl<n>/command_buffers
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Displays a list with information about the currently allocated
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command buffers
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What: /sys/kernel/debug/habanalabs/hl<n>/command_submission
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Displays a list with information about the currently active
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command submissions
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What: /sys/kernel/debug/habanalabs/hl<n>/command_submission_jobs
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Displays a list with detailed information about each JOB (CB) of
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each active command submission
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What: /sys/kernel/debug/habanalabs/hl<n>/data32
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Allows the root user to read or write directly through the
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device's PCI bar. Writing to this file generates a write
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transaction while reading from the file generates a read
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transaction. This custom interface is needed (instead of using
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the generic Linux user-space PCI mapping) because the DDR bar
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is very small compared to the DDR memory and only the driver can
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move the bar before and after the transaction.
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If the IOMMU is disabled, it also allows the root user to read
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or write from the host a device VA of a host mapped memory
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What: /sys/kernel/debug/habanalabs/hl<n>/data64
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Date: Jan 2020
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KernelVersion: 5.6
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Contact: ogabbay@kernel.org
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Description: Allows the root user to read or write 64 bit data directly
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through the device's PCI bar. Writing to this file generates a
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write transaction while reading from the file generates a read
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transaction. This custom interface is needed (instead of using
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the generic Linux user-space PCI mapping) because the DDR bar
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is very small compared to the DDR memory and only the driver can
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move the bar before and after the transaction.
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If the IOMMU is disabled, it also allows the root user to read
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or write from the host a device VA of a host mapped memory
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What: /sys/kernel/debug/habanalabs/hl<n>/data_dma
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Date: Apr 2021
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KernelVersion: 5.13
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Contact: ogabbay@kernel.org
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Description: Allows the root user to read from the device's internal
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memory (DRAM/SRAM) through a DMA engine.
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This property is a binary blob that contains the result of the
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DMA transfer.
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This custom interface is needed (instead of using the generic
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Linux user-space PCI mapping) because the amount of internal
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memory is huge (>32GB) and reading it via the PCI bar will take
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a very long time.
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This interface doesn't support concurrency in the same device.
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In GAUDI and GOYA, this action can cause undefined behavior
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in case the it is done while the device is executing user
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workloads.
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Only supported on GAUDI at this stage.
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What: /sys/kernel/debug/habanalabs/hl<n>/device
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Enables the root user to set the device to specific state.
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Valid values are "disable", "enable", "suspend", "resume".
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User can read this property to see the valid values
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What: /sys/kernel/debug/habanalabs/hl<n>/dma_size
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Date: Apr 2021
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KernelVersion: 5.13
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Contact: ogabbay@kernel.org
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Description: Specify the size of the DMA transaction when using DMA to read
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from the device's internal memory. The value can not be larger
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than 128MB. Writing to this value initiates the DMA transfer.
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When the write is finished, the user can read the "data_dma"
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blob
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What: /sys/kernel/debug/habanalabs/hl<n>/dump_security_violations
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Date: Jan 2021
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KernelVersion: 5.12
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Contact: ogabbay@kernel.org
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Description: Dumps all security violations to dmesg. This will also ack
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all security violations meanings those violations will not be
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dumped next time user calls this API
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What: /sys/kernel/debug/habanalabs/hl<n>/engines
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Date: Jul 2019
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KernelVersion: 5.3
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Contact: ogabbay@kernel.org
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Description: Displays the status registers values of the device engines and
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their derived idle status
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What: /sys/kernel/debug/habanalabs/hl<n>/i2c_addr
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Sets I2C device address for I2C transaction that is generated
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by the device's CPU
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What: /sys/kernel/debug/habanalabs/hl<n>/i2c_bus
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Sets I2C bus address for I2C transaction that is generated by
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the device's CPU
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What: /sys/kernel/debug/habanalabs/hl<n>/i2c_data
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Triggers an I2C transaction that is generated by the device's
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CPU. Writing to this file generates a write transaction while
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reading from the file generates a read transaction
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What: /sys/kernel/debug/habanalabs/hl<n>/i2c_len
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Date: Dec 2021
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KernelVersion: 5.17
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Contact: obitton@habana.ai
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Description: Sets I2C length in bytes for I2C transaction that is generated by
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the device's CPU
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What: /sys/kernel/debug/habanalabs/hl<n>/i2c_reg
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Sets I2C register id for I2C transaction that is generated by
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the device's CPU
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What: /sys/kernel/debug/habanalabs/hl<n>/led0
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Sets the state of the first S/W led on the device
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What: /sys/kernel/debug/habanalabs/hl<n>/led1
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Sets the state of the second S/W led on the device
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What: /sys/kernel/debug/habanalabs/hl<n>/led2
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Sets the state of the third S/W led on the device
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What: /sys/kernel/debug/habanalabs/hl<n>/mmu
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Displays the hop values and physical address for a given ASID
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and virtual address. The user should write the ASID and VA into
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the file and then read the file to get the result.
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e.g. to display info about VA 0x1000 for ASID 1 you need to do:
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echo "1 0x1000" > /sys/kernel/debug/habanalabs/hl0/mmu
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What: /sys/kernel/debug/habanalabs/hl<n>/mmu_error
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Date: Mar 2021
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KernelVersion: 5.12
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Contact: fkassabri@habana.ai
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Description: Check and display page fault or access violation mmu errors for
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all MMUs specified in mmu_cap_mask.
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e.g. to display error info for MMU hw cap bit 9, you need to do:
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echo "0x200" > /sys/kernel/debug/habanalabs/hl0/mmu_error
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cat /sys/kernel/debug/habanalabs/hl0/mmu_error
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What: /sys/kernel/debug/habanalabs/hl<n>/set_power_state
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Sets the PCI power state. Valid values are "1" for D0 and "2"
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for D3Hot
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What: /sys/kernel/debug/habanalabs/hl<n>/skip_reset_on_timeout
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Date: Jun 2021
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KernelVersion: 5.13
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Contact: ynudelman@habana.ai
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Description: Sets the skip reset on timeout option for the device. Value of
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"0" means device will be reset in case some CS has timed out,
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otherwise it will not be reset.
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What: /sys/kernel/debug/habanalabs/hl<n>/state_dump
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Date: Oct 2021
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KernelVersion: 5.15
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Contact: ynudelman@habana.ai
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Description: Gets the state dump occurring on a CS timeout or failure.
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State dump is used for debug and is created each time in case of
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a problem in a CS execution, before reset.
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Reading from the node returns the newest state dump available.
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Writing an integer X discards X state dumps, so that the
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next read would return X+1-st newest state dump.
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What: /sys/kernel/debug/habanalabs/hl<n>/stop_on_err
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Date: Mar 2020
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KernelVersion: 5.6
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Contact: ogabbay@kernel.org
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Description: Sets the stop-on_error option for the device engines. Value of
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"0" is for disable, otherwise enable.
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Relevant only for GOYA and GAUDI.
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What: /sys/kernel/debug/habanalabs/hl<n>/timeout_locked
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Date: Sep 2021
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KernelVersion: 5.16
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Contact: obitton@habana.ai
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Description: Sets the command submission timeout value in seconds.
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What: /sys/kernel/debug/habanalabs/hl<n>/userptr
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Displays a list with information about the currently user
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pointers (user virtual addresses) that are pinned and mapped
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to DMA addresses
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What: /sys/kernel/debug/habanalabs/hl<n>/userptr_lookup
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Date: Aug 2021
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KernelVersion: 5.15
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Contact: ogabbay@kernel.org
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Description: Allows to search for specific user pointers (user virtual
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addresses) that are pinned and mapped to DMA addresses, and see
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their resolution to the specific dma address.
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What: /sys/kernel/debug/habanalabs/hl<n>/vm
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Date: Jan 2019
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KernelVersion: 5.1
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Contact: ogabbay@kernel.org
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Description: Displays a list with information about all the active virtual
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address mappings per ASID and all user mappings of HW blocks
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