hl_fw_copy_msg_to_device(9)

💅 hl_fw_copy_msg_to_device (9) — Kernel API Manual 🎀

okay bestie, welcome to the glow-up edition of the hl_fw_copy_msg_to_device(9) page from the Kernel API Manual. this one's short and sweet — it's literally just the part that actually moves the bytes. no cap. 🦋

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✨ NAME ✨

hl_fw_copy_msg_to_device — copy message to device 🌸

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✨ SYNOPSIS ✨

int hl_fw_copy_msg_to_device (struct hl_device *hdev , struct
lkd_msg_comms *msg , void __iomem *dst , u32 src_offset , u32 size );

like… look at her. iconic signature. 👑

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✨ ARGUMENTS ✨

• hdev — pointer to hl_device structure. your device main character. 💖
• msg — message. the actual message in question, bestie. ✨
• dst — IO memory mapped address space to copy firmware to. yes, that's where the goods go. 🎀
• src_offset — offset in src message to copy from. so you don't have to start at the very beginning, iykyk. 🦋
• size — amount of bytes to copy (0 to copy the whole binary). zero means everything, periodt. 🔥

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✨ DESCRIPTION ✨

this is, like, the actual copy of message data to the device. the real one. not a setup step, not a check — this is the copying. it's giving "doing the thing" energy. 💅

ngl the whole function is one job: message data → device. don't overthink her. 🫶

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✨ SEE ALSO ✨

the whole friend group, fr fr — kernel file ./drivers/accel/habanalabs/common/firmware_if.c plus:

• hl_fw_version_cmp(9)
• extract_u32_until_given_char(9)
• hl_get_sw_major_minor_subminor(9)
• hl_get_preboot_major_minor(9)
• hl_release_firmware(9)
• hl_fw_copy_fw_to_device(9)
• hl_fw_load_fw_to_device(9)
• hl_fw_send_cpu_message(9)
• hl_fw_preboot_update_state(9)
• hl_fw_dynamic_report_error_status(9)
• hl_fw_dynamic_send_cmd(9)
• hl_fw_dynamic_extract_fw_response(9)
• hl_fw_dynamic_wait_for_status(9)
• hl_fw_dynamic_send_clear_cmd(9)
• hl_fw_dynamic_send_protocol_cmd(9)
• hl_fw_compat_crc32(9)
• hl_fw_dynamic_validate_memory_bound(9)
• hl_fw_dynamic_validate_descriptor(9)
• hl_fw_dynamic_read_and_validate_descriptor(9)
• hl_fw_dynamic_request_descriptor(9)
• hl_fw_dynamic_read_device_fw_version(9)
• hl_fw_dynamic_copy_image(9)
• hl_fw_dynamic_copy_msg(9)
• hl_fw_boot_fit_update_state(9)
• hl_fw_dynamic_load_image(9)
• hl_fw_linux_update_state(9)
• hl_fw_dynamic_send_msg(9)
• hl_fw_dynamic_init_cpu(9)
• hl_fw_static_init_cpu(9)
• hl_fw_init_cpu(9)

go read them too, you'll be obsessed. 🌈

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and that's the page, bestie!! 🧚💜 brought to you by the lovely humans of ./drivers/accel/habanalabs/common, dated October 2026 — mwah, catch you in the next manpage 💋⭐