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Diagnosing GENI SE-based driver (serial, SPI, I2C) failures currently requires reading each hardware register individually, either through ad hoc debug code or a debugger. This is slow, requires the state to remain stable across the multiple reads, and cannot be run non-intrusively during normal operation without adding printk-style noise to each driver. Add a new trace event header for the Qualcomm GENI Serial Engine (SE) framework providing a geni_se_regs tracepoint. This tracepoint captures a comprehensive snapshot of the GENI SE hardware state in a single trace record, making it possible to correlate register values at a precise point in time without multiple sequential reads. The trace event records the following register groups: - Main/secondary command and IRQ status (M_CMD0, S_CMD0, M/S_IRQ_STATUS) - Engine status, IOS, and command control/error registers - TX/RX FIFO status and watermark registers (including RFR watermark) - M/S GP length registers - DMA TX/RX IRQ, enable, length, pointer, attribute, and burst registers - DMA interface enable, general config, QSB trans config, and debug - M/S IRQ enable, GSI event enable, and top-level SE IRQ enable - Serial master/slave clock config, general config, output control, clock control RO, FIFO interface disable, and FW multilock MSA - Clock select register Having all these registers captured atomically in a single ftrace record allows drivers built on top of the GENI SE framework (serial, SPI, I2C) to invoke this tracepoint on error paths and reconstruct the full engine state during post-mortem analysis without instrumenting each driver separately. Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Praveen Talari <praveen.talari@oss.qualcomm.com> Link: https://patch.msgid.link/20260729-add-tracepoints-for-se-reg-dump-v4-1-08bbd63b0ed2@oss.qualcomm.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| .. | ||
| events | ||
| misc | ||
| stages | ||
| bpf_probe.h | ||
| define_custom_trace.h | ||
| define_remote_events.h | ||
| define_trace.h | ||
| perf.h | ||
| syscall.h | ||
| trace_custom_events.h | ||
| trace_events.h | ||