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In the current implementation, SVC client drivers such as socfpga-hwmon,
intel_fcs, stratix10-soc, stratix10-rsu each send an SMC command that
triggers a single thread in the stratix10-svc driver. Upon receiving a
callback, the initiating client driver sends a stratix10-svc-done signal,
terminating the thread without waiting for other pending SMC commands to
complete. This leads to a timeout issue in the firmware SVC mailbox service
when multiple client drivers send SMC commands concurrently.
To resolve this issue, a dedicated thread is now created per channel. The
stratix10-svc driver will support up to the number of channels defined by
SVC_NUM_CHANNEL. Thread synchronization is handled using a mutex to prevent
simultaneous issuance of SMC commands by multiple threads.
SVC_NUM_DATA_IN_FIFO is reduced from 32 to 8, since each channel now has
its own dedicated FIFO and the SDM processes commands one at a time.
8 entries per channel is sufficient while keeping the total aggregate
capacity the same (4 channels x 8 = 32 entries).
Additionally, a thread task is now validated before invoking kthread_stop
when the user aborts, ensuring safe termination.
Timeout values have also been adjusted to accommodate the increased load
from concurrent client driver activity.
Fixes:
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History
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|---|---|---|
| .. | ||
| broadcom | ||
| cirrus | ||
| imx | ||
| intel | ||
| mediatek | ||
| meson | ||
| qcom | ||
| samsung | ||
| thead | ||
| trusted_foundations.h | ||
| xlnx-event-manager.h | ||
| xlnx-zynqmp-crypto.h | ||
| xlnx-zynqmp-ufs.h | ||
| xlnx-zynqmp.h | ||