hl_fw_dynami...nd_clear_cmd(9)

📦 version 7.3.1, in nixpkgs unstable

💅 hl_fw_dynamic_send_clear_cmd — like, the Kernel API Manual page you didn't know you needed 🎀

okay bestie, so this little icon is hl_fw_dynamic_send_clear_cmd(9) from the Kernel API Manual, and it's literally just here to send a clear command to the FW. no cap, that's the whole vibe. ✨

🌸 NAME 🌸

hl_fw_dynamic_send_clear_cmd — send clear command to FW 🫶

🦋 SYNOPSIS 🦋

int hl_fw_dynamic_send_clear_cmd (struct hl_device *hdev , struct
fw_load_mgr *fw_loader );

💖 ARGUMENTS 💖

  • hdev — pointer to the habanalabs device structure. iconic. the device itself, basically. 👑
  • fw_loader — managing structure for loading device's FW. it's giving "the handler for the firmware-loading situation." 💅

✨ DESCRIPTION ✨

so the return sitch is: return 0 on success, otherwise a non-zero error code. slay. that's the success/failure vibe check. ✅

and here's the actual tea, bestie: after a command cycle between LKD and the FW CPU — i.e. LKD got an expected status from FW — we need to clear the CPU status register so we don't get garbage between command cycles. not me being dramatic, it's literally a garbage-prevention moment. 🗑️✨

how do we do it? by sending the clear command and polling the CPU to LKD status register to hold the status NOOP. that's the whole move. periodt. 💅

lowkey important: this is all about keeping those command cycles clean so no stale garbage sticks around. LKD gets its expected status from FW, then clear the CPU status register, then the status holds NOOP. 🎀

🔥 SEE ALSO 🔥

the kernel file on deck is ./drivers/accel/habanalabs/common/firmware_if.c — go read it, iykyk. 📖

and here's the whole friend group, fr fr:

okay that's the whole page, bestie 💖✨

cute little sign-off: this one lives in ./drivers/accel/habanalabs/common, dated October 2026, and it's forever known as hl_fw_dynami...nd_clear_cmd(9). mwah. 💋🎀🦋

📦 where this page comes from