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What: /sys/class/firmware/.../data
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Date: July 2022
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KernelVersion: 5.19
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- Contact: Russ Weight <russell.h. weight@intel.com >
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+ Contact: Russ Weight <russ. weight@linux.dev >
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Description: The data sysfs file is used for firmware-fallback and for
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firmware uploads. Cat a firmware image to this sysfs file
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after you echo 1 to the loading sysfs file. When the firmware
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What: /sys/class/firmware/.../cancel
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Date: July 2022
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KernelVersion: 5.19
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- Contact: Russ Weight <russell.h. weight@intel.com >
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+ Contact: Russ Weight <russ. weight@linux.dev >
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Description: Write-only. For firmware uploads, write a "1" to this file to
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request that the transfer of firmware data to the lower-level
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device be canceled. This request will be rejected (EBUSY) if
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What: /sys/class/firmware/.../error
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Date: July 2022
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KernelVersion: 5.19
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- Contact: Russ Weight <russell.h. weight@intel.com >
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+ Contact: Russ Weight <russ. weight@linux.dev >
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Description: Read-only. Returns a string describing a failed firmware
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upload. This string will be in the form of <STATUS>:<ERROR>,
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where <STATUS> will be one of the status strings described
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What: /sys/class/firmware/.../loading
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Date: July 2022
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KernelVersion: 5.19
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- Contact: Russ Weight <russell.h. weight@intel.com >
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+ Contact: Russ Weight <russ. weight@linux.dev >
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Description: The loading sysfs file is used for both firmware-fallback and
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for firmware uploads. Echo 1 onto the loading file to indicate
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you are writing a firmware file to the data sysfs node. Echo
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What: /sys/class/firmware/.../remaining_size
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Date: July 2022
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KernelVersion: 5.19
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- Contact: Russ Weight <russell.h. weight@intel.com >
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+ Contact: Russ Weight <russ. weight@linux.dev >
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Description: Read-only. For firmware upload, this file contains the size
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of the firmware data that remains to be transferred to the
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lower-level device driver. The size value is initialized to
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What: /sys/class/firmware/.../status
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Date: July 2022
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KernelVersion: 5.19
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- Contact: Russ Weight <russell.h. weight@intel.com >
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+ Contact: Russ Weight <russ. weight@linux.dev >
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Description: Read-only. Returns a string describing the current status of
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a firmware upload. The string will be one of the following:
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idle, "receiving", "preparing", "transferring", "programming".
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What: /sys/class/firmware/.../timeout
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Date: July 2022
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KernelVersion: 5.19
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- Contact: Russ Weight <russell.h. weight@intel.com >
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+ Contact: Russ Weight <russ. weight@linux.dev >
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Description: This file supports the timeout mechanism for firmware
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fallback. This file has no affect on firmware uploads. For
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more information on timeouts please see the documentation
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