fw_core_add_address_handler(9)

💖 fw_core_add_address_handler(9) 💖

okay so this one is straight from the Kernel API Manual, bestie, and it’s all about registering for incoming requests. slay. 💅

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🌸 NAME 🌸

fw_core_add_address_handler — register for incoming requests ✨

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🎀 SYNOPSIS 🎀

int fw_core_add_address_handler (struct fw_address_handler *handler ,
const struct fw_address_region *region );

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🦋 ARGUMENTS 🦋

• handler — callback 💖
• region — region in the IEEE 1212 node space address range 🌈

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✨ DESCRIPTION ✨

okay so first thing: region->start, ->end, and handler->length have to be quadlet-aligned. no cap, that’s the rule. 🎯

When a request is received that falls within the specified address range, the specified callback is invoked. The parameters passed to the callback give the details of the particular request. The callback is invoked in the workqueue context in most cases. However, if the request is initiated by the local node, the callback is invoked in the initiator's context. 👀

To be called in process context. Return value: 0 on success, non-zero otherwise. periodt. 💅

The start offset of the handler's address region is determined by fw_core_add_address_handler and is returned in handler->offset. 🫶

Address allocations are exclusive, except for the FCP registers. that’s the vibe check, and it passed. ✅

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🔥 SEE ALSO 🔥

the SEE ALSO squad is giving linked-list energy, fr fr:

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

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that’s the whole vibe, bestie 🫶 source/version: ./drivers/firewire; date: October 2026; page: fw_core_add_address_handler(9) 💅🎀