cxl_mem_get_fw_info(9)

💖 cxl_mem_get_fw_info — Get Firmware info 💖

okay so real talk, this page lives in section 9 of the Kernel API Manual, and it's lowkey one of the cutest little helpers in the CXL core. it's giving "just go ask the hardware what firmware it's running" energy and honestly? we love that for it. 🎀

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✨ SYNOPSIS ✨

int cxl_mem_get_fw_info (struct cxl_memdev_state *mds );

like, that's it. one function, one argument, one int coming back at you. slay. 💅

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🌸 ARGUMENTS 🌸

• mds — bestie, this is the device data for the operation. it's the struct cxl_memdev_state * that tells the call which device we're doing all this for. no mds, no info, no nothing. 🫶

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🦋 DESCRIPTION 🦋

so what does it actually do? it retrieves firmware info for the device you specified. that's the whole vibe. 🔥

if you wanna read the source-of-truth spec on it, go peek at CXL-3.0 8.2.9.3.1 Get FW Info — that's literally the named section, iykyk. 👑

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⭐ RETURN ⭐

it returns 0 if no error ✨ — or, plot twist, it hands back the result of the mailbox command. so like, if the mailbox said something, you're getting that something. main character return value behavior, honestly. 😭

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🧚 SEE ALSO 🧚

• Kernel file ./drivers/cxl/core/memdev.c — the actual home of all this, go say hi 💜
• cxl_set_capacity(9)
• set_exclusive_cxl_commands(9)
• clear_exclusive_cxl_commands(9)
• cxl_mem_activate_fw(9)
• cxl_mem_abort_fw_xfer(9)

like a little friend group of CXL functions. go read them too, they're all iconic in their own way. 🌈

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ok that's the whole page, no cap. every flag, every return value, every friend in the SEE ALSO — all accounted for. you're so welcome. 💖

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and that's a wrap, bestie!! 🎀 this page comes to you straight out of ./drivers/cxl/core and it's dated October 2026 — so yeah, it's from the future, and it's still serving. periodt. 👑✨🦋