20 lines
1016 B
Plaintext
20 lines
1016 B
Plaintext
What: /sys/bus/pci/drivers/qaic/XXXX:XX:XX.X/accel/accel<minor_nr>/dbc<N>_state
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Date: October 2025
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KernelVersion: 6.19
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Contact: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
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Description: Represents the current state of DMA Bridge channel (DBC). Below are the possible
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states:
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=================== ==========================================================
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IDLE (0) DBC is free and can be activated
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ASSIGNED (1) DBC is activated and a workload is running on device
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BEFORE_SHUTDOWN (2) Sub-system associated with this workload has crashed and
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it will shutdown soon
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AFTER_SHUTDOWN (3) Sub-system associated with this workload has crashed and
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it has shutdown
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BEFORE_POWER_UP (4) Sub-system associated with this workload is shutdown and
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it will be powered up soon
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AFTER_POWER_UP (5) Sub-system associated with this workload is now powered up
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=================== ==========================================================
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Users: Any userspace application or clients interested in DBC state.
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