STRUCT SCMI_OPTEE_CHANNEL(9)

✨ NAME ✨

okay so bestie, welcome to the Kernel API Manual (section 9, we're fancy 💅) — this page is all about struct scmi_optee_channel, which is literally the description of an OP-TEE SCMI channel. that's it, that's the vibe 🎀

🌸 SYNOPSIS 🌸

here's the whole struct, character for character, no cap:

struct scmi_optee_channel {
    u32 channel_id;
    u32 tee_session;
    u32 caps;
    u32 rx_len;
    struct mutex mu;
    struct scmi_chan_info *cinfo;
    union {
      struct scmi_shared_mem __iomem *shmem;
      struct scmi_msg_payld *msg;
    } req;
    struct scmi_shmem_io_ops *io_ops;
    struct tee_shm *tee_shm;
    struct list_head link;
 };

like, look at her. main character struct energy fr fr 👑

🦋 MEMBERS 🦋

okay now let's go field by field, because every single one of these matters and i'm not skipping a single one 💖

• channel_id — the OP-TEE channel ID that this transport is using. her personal little id badge 🪪
• tee_session — the TEE session identifier. yep, the session, the whole session 🫶
• caps — the OP-TEE SCMI channel capabilities. all the things she's capable of ✨
• rx_len — the response size. how big the reply is gonna be 📏
• mu — a mutex protecting access to the channel. no two people in this dressing room at once, periodt 🔒
• cinfo — the SCMI channel information. the whole info situation 💫
• req — a union for the SCMI interface. choose your fighter 🥊
• req.shmem — the virtual base address of the shared memory. where the shared memory actually lives 📍
• req.msg — the shared memory protocol handle for the SCMI request and the synchronous response. request in, response out, matched set 💌
• io_ops — the transport-specific I/O operations. the I/O operations, but make them specific to the transport 🧚
• tee_shm — the TEE shared memory handle req, or NULL if it's using IOMEM shmem. yes, either/or, don't come for me 🙈
• link — a reference in the agent's channel list. she's on the list, obviously 📋

⭐ SEE ALSO ⭐

• the kernel file ./drivers/firmware/arm_scmi/transports/optee.c — go read it, i'll wait 🍓
• struct scmi_optee_agent(9) — her bestie, go say hi 🫶

lowkey reminder: this whole page is from the Kernel API Manual, source/version is ./drivers/firmware/arm_scmi/tr... and it's stamped October 2026. mwah, love u, go read your kernel source 💜🌈

struct scmi_optee_channel(9) — she ate and left no crumbs 👑💅