libnvme(2)

💖 NAME 💖

okay bestie, gather round, because libnvme has a whole little enum for you and it's called enum nvme_csts — and what it is, is literally the field that indicates the controller status register. that's it, that's the vibe. the controller's status. right there in a register. iconic behavior honestly. 🎀

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✨ SYNOPSIS ✨

like, here's the whole shape of it, no cap:

enum nvme_csts {
    NVME_CSTS_RDY_SHIFT ,
    NVME_CSTS_CFS_SHIFT ,
    NVME_CSTS_SHST_SHIFT ,
    NVME_CSTS_NSSRO_SHIFT ,
    NVME_CSTS_PP_SHIFT ,
    NVME_CSTS_ST_SHIFT ,
    NVME_CSTS_RDY_MASK ,
    NVME_CSTS_CFS_MASK ,
    NVME_CSTS_SHST_MASK ,
    NVME_CSTS_NSSRO_MASK ,
    NVME_CSTS_PP_MASK ,
    NVME_CSTS_ST_MASK ,
    NVME_CSTS_SHST_NORMAL ,
    NVME_CSTS_SHST_OCCUR ,
    NVME_CSTS_SHST_CMPLT ,
    NVME_CSTS_SHN_MASK

};

sixteen constants, all lined up, all serving looks. 💅

🦋 Constants 🦋

okay so every single one of these, in order, and what it's giving:

• NVME_CSTS_RDY_SHIFT — the shift amount to get the ready. that's the whole job. shifting to find ready. slay.
• NVME_CSTS_CFS_SHIFT — the shift amount to get the controller fatal status. yes bestie, "fatal" is in the name, she's dramatic but she's legit. 😭
• NVME_CSTS_SHST_SHIFT — the shift amount to get the shutdown status.
• NVME_CSTS_NSSRO_SHIFT — the shift amount to get the NVM subsystem reset occurred. it happened. the subsystem reset. we're noting it.
• NVME_CSTS_PP_SHIFT — the shift amount to get the processing paused. paused, not cancelled, pausing is self-care. 🧚
• NVME_CSTS_ST_SHIFT — the shift amount to get the shutdown type.
• NVME_CSTS_RDY_MASK — the mask to get the ready.
• NVME_CSTS_CFS_MASK — the mask to get the controller fatal status.
• NVME_CSTS_SHST_MASK — the mask to get the shutdown status.
• NVME_CSTS_NSSRO_MASK — the mask to get the NVM subsystem reset occurred.
• NVME_CSTS_PP_MASK — the mask to get the processing paused.
• NVME_CSTS_ST_MASK — the mask to get the shutdown type.
• NVME_CSTS_SHST_NORMAL — normal operation. everything's fine, the vibe check passed, we love that for us. 💖
• NVME_CSTS_SHST_OCCUR — shutdown processing occurring. it's happening right now. mid-shutdown. main character moment. ✨
• NVME_CSTS_SHST_CMPLT — shutdown processing complete. finished. done. periodt. 👑
• NVME_CSTS_SHN_MASK — deprecated mask to get the shutdown status. yeah bestie, she's deprecated, still here, still doing the thing, but the codebase has moved on. use her knowing that. 🙈

heads up my love: NVME_CSTS_SHN_MASK is the deprecated one out of the bunch. that's a described-as-deprecated situation, not a me-worrying-about-it situation — the page says deprecated, so deprecated it is. 🫶

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and that's the whole page, you understood it, I'm so proud. this was enum nvme_csts, straight out of the libnvme manual, and the docs are dated July 2026, version libnvme(2) in the corner like the little timestamp girlies are. mwah. go mask some status bits. 🌈💜