hl_fw_dynami...e_descriptor(9)

🦋 NAME 🦋

okay bestie so this is the hl_fw_dynami...e_descriptor(9) page from the Kernel API Manual — yes the header truncates the name, that's just how it is, don't @ me 💅 — and it's about one very specific little function:

hl_fw_dynamic_read_and_validate_descriptor — read and validate FW descriptor ✨

That's it. That's the whole job. It reads the descriptor, it validates the descriptor, it minds its own business. Iconic behaviour honestly.

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🌸 SYNOPSIS 🌸

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

not me writing a whole function signature in int like it's no big deal 😭 she returns an int, she takes two pointers, she's booked and busy fr fr.

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🎀 ARGUMENTS 🎀

two (2) whole parameters, and bestie you WILL know what they are:

• hdev — pointer to the habanalabs device structure. aka the device. the main character. 👑
• fw_loader — managing structure for loading device's FW. she manages. she loads. she handles the FW situation so you don't have to 🫶

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✨ DESCRIPTION ✨

okay so the description is genuinely short and I respect the confidence:

return 0 on success, otherwise non-zero error code 💀

that's literally it. 0 = slay. non-zero = something went sideways and you should go look at the error code. no cap, no extra lore, no footnotes. periodt.

ngl this is one of those "the function name tells you everything" situations — read it, validate it, tell me if it worked. lowkey refreshing tbh 🌈

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💜 SEE ALSO 💜

the cross-reference section went OFF, like there are THIRTY links here, she's connected:

Kernel file: ./drivers/accel/habanalabs/common/firmware_if.c ⭐

• 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_copy_msg_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_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)

like okayyy miss thing with the entire friend group 😭 and yeah, the (9) on every single one means section 9, kernel API, you know how it is iykyk 🧚

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and that's the page!! 🍓💖

little sign-off moment: this whole thing lives in ./drivers/accel/habanalabs/common and the page is dated October 2026, so she's from the future, she's ahead of her time, we simply have to stan 🌸🦋✨

bye bestie, go read a descriptor responsibly 💅