STRUCT QCOM_SMD_CHANNEL(9)

💖 NAME 💖

struct qcom_smd_channel — the smd channel struct, bestie. it's the whole vibe of an SMD channel in one little struct 🎀

so this page lives in the Kernel API Manual, and yeah we're gonna go through literally every single member bc nothing gets skipped in this house ✨

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🌸 SYNOPSIS 🌸

like, here's what she looks like, no cap:

struct qcom_smd_channel {
    struct qcom_smd_edge *edge;
    struct qcom_smd_endpoint *qsept;
    bool registered;
    char *name;
    enum smd_channel_state state;
    enum smd_channel_state remote_state;
    wait_queue_head_t state_change_event;
    struct smd_channel_info_pair *info;
    struct smd_channel_info_word_pair *info_word;
    spinlock_t tx_lock;
    wait_queue_head_t fblockread_event;
    void *tx_fifo;
    void *rx_fifo;
    int fifo_size;
    void *bounce_buffer;
    spinlock_t recv_lock;
    int pkt_size;
    void *drvdata;
    struct list_head list;
 };

she's giving structured. she's giving fields. we love her 💅

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✨ MEMBERS ✨

okay so this is the part where we go member by member and I tell you what each one rly does 🫶

• edge — the qcom_smd_edge this channel is living on. like her home address fr 🏠
• qsept — reference to a associated smd endpoint 🔗
• registered — flag to indicate if the channel is registered ✅
• name — name of the channel 🏷️
• state — local state of the channel, yk, hers 💁‍♀️
• remote_state — remote state of the channel, the other side's whole situation 👀
• state_change_event — state change event ⚡
• info — byte aligned outgoing/incoming channel info 📬
• info_word — word aligned outgoing/incoming channel info 📨
• tx_lock — lock to make writes to the channel mutually exclusive. no two besties writing at once okay 🔒
• fblockread_event — wakeup event tied to tx fBLOCKREADINTR ⏰
• tx_fifo — pointer to the outgoing ring buffer 🚀
• rx_fifo — pointer to the incoming ring buffer 📥
• fifo_size — size of each ring buffer 📏
• bounce_buffer — bounce buffer for reading wrapped packets 🏀 (literally what it sounds like, she bounces)
• recv_lock — guard for rx info modifications and cb pointer 🛡️
• pkt_size — size of the currently handled packet 📦
• drvdata — driver private data 🤫 (private!! we don't ask)
• list — lite entry for channels in qcom_smd_edge 🔗

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👑 SEE ALSO 👑

go read the actual kernel file bestie, it's all there: Kernel file ./drivers/rpmsg/qcom_smd.c — and while you're at it, these icons too 💜

• struct qcom_smd_edge(9)
• struct qcom_smd_alloc_entry(9)
• __qcom_smd_send(9)
• qcom_smd_register_edge(9)
• qcom_smd_unregister_edge(9)

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ok that's the whole page, nothing skipped, nothing invented, we ate and left no crumbs 🔥

and that's a wrap on struct qcom_smd_channel(9) 🎀 this one came out of ./drivers/rpmsg, dated October 2026, and it's filed under struct qcom_smd_channel(9) — mwah, go read the source, ily, bye 💖✨🦋