fw_request_get_timestamp(9)

🎀 fw_request_get_timestamp(9) 🎀

okay bestie, welcome to the Kernel API Manual ✨ this one is short, sweet, and very firewire-coded 💅

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✨ NAME ✨

fw_request_get_timestamp — get the timestamp of the request, periodt 💖

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🌸 SYNOPSIS 🌸

u32 fw_request_get_timestamp (const struct fw_request *request );

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🦋 ARGUMENTS 🦋

• request — the opaque pointer to the request structure. it's giving mysterious, it's giving "don't peek inside" 🙈

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💫 DESCRIPTION 💫

so this function gets the timestamp for when the 1394 OHCI controller receives the asynchronous request subaction ✨

the timestamp is made of two lil pieces:

• the low order 3 bits of the second field
• the full 13 bits of the count field

both of those come from the isochronous cycle time register 🎀 that's the whole vibe check, no cap.

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🔥 RETURN 🔥

returns the timestamp of the request 💅 literally what it says on the tin.

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/firewire/core-transaction.c
• __fw_send_request(9)
• fw_run_transaction(9)
• fw_core_add_address_handler(9)
• fw_core_remove_address_handler(9)
• fw_send_response(9)
• fw_get_request_speed(9)
• fw_rcode_string(9)

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source/version: ./drivers/firewire · date: October 2026 🫶 stay timestamped, bestie 💖👑