handle_qman_data_on_err(9)

✨ handle_qman_data_on_err — extract QMAN data on error ✨

okay so bestie, welcome to page handle_qman_data_on_err(9) of the Kernel API Manual 💅 this one's a little diagnostic icon and you're gonna love her

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🌸 SYNOPSIS 🌸

void handle_qman_data_on_err (struct hl_device *hdev , u32 qid_base ,
       u32 stream , u64 qman_base , u64 event_mask );

returns nothing, takes five args, does so much

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🎀 ARGUMENTS 🎀

• hdev — pointer to the habanalabs device structure, like, the whole device's main character 💖
• qid_base — the first QID of the QMAN (out of 4 streams, yes 4, remember that number, she comes back later 👀)
• stream — the QMAN's stream, literally just which stream we're talking about
• qman_base — base address of the QMAN registers block, the coordinates of the vibe
• event_mask — mask of the last events that occurred, AKA the receipts 🧾

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🦋 DESCRIPTION 🦋

so this function's whole job? attempt to extract as much data as possible on QMAN error 🫶 like when stuff goes wrong she is not leaving quietly, she's grabbing everything she can on the way out. no cap.

here's the tea on what actually gets printed:

• on upper CP</> — print the SW config stream data and the last 8 PQEs ⭐
• on lower CP</> — print SW config data and the last PQEs of ALL 4 upper CPs 😭 (told you the 4 would come back)

so yeah, upper CP keeps it to its own stream, lower CP is out here collecting from all four. generous queen 👑

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👑 SEE ALSO 👑

• Kernel file ./drivers/accel/habanalabs/gaudi/gaudi.c
• gaudi_fetch_psoc_frequency(9)
• gaudi_handle_sw_config_stream_data(9)
• gaudi_handle_last_pqes_on_err(9)
• gaudi_set_asic_funcs(9)

these are her friends, go say hi 💜

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and that's the whole page bestie!! brought to you by the fine folks over at ./drivers/accel/habanalabs/gaudi, dated October 2026 🎀 mwah, go read the source, ily, bye 🦋✨