STRUCT QCOM_SMD_EDGE(9)

💖 struct qcom_smd_edge(9) 💖

okay so bestie, welcome to the Kernel API Manual, this one's all about struct qcom_smd_edge — the little struct that's literally representing a remote processor 🫶. it lives in ./drivers/rpmsg and it's giving main character energy for the whole SMD subsystem, ngl.

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✨ NAME ✨

struct qcom_smd_edge — representing a remote processor 💅

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🌸 SYNOPSIS 🌸

struct qcom_smd_edge {
    struct device dev;
    const char *name;
    struct device_node *of_node;
    unsigned edge_id;
    unsigned remote_pid;
    int irq;
    struct regmap *ipc_regmap;
    int ipc_offset;
    int ipc_bit;
    struct mbox_client mbox_client;
    struct mbox_chan *mbox_chan;
    struct list_head channels;
    spinlock_t channels_lock;
    unsigned long allocated[SMD_ALLOC_TBL_COUNT][BITS_TO_LONGS(
SMD_ALLOC_TBL_SIZE)];
    unsigned smem_available;
    wait_queue_head_t new_channel_event;
    struct work_struct scan_work;
    struct work_struct state_work;
 };

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🎀 Members 🎀

don't skip a single one of these, they ALL matter, periodt:

• dev — the device associated with this edge 🦋
• name — name of this edge ✨
• of_node — the of_node handle for info related to this edge 🌸
• edge_id — identifier of this edge 🔥
• remote_pid — identifier of remote processor 👑
• irq — the interrupt for signals on this edge ⭐
• ipc_regmap — regmap handle holding the outgoing ipc register 💜
• ipc_offset — offset within ipc_regmap of the register for ipc 💫
• ipc_bit — bit in the register at ipc_offset of ipc_regmap 🎀
• mbox_client — mailbox client handle 🧚
• mbox_chan — apcs ipc mailbox channel handle 📬
• channels — list of all channels detected on this edge 🌈
• channels_lock — guard for modifications of channels 🔒
• allocated — array of bitmaps representing already allocated channels 💅
• smem_available — last available amount of smem triggering a channel scan 😭
• new_channel_event — wait queue for new channel events 🫶
• scan_work — work item for discovering new channels 🔍
• state_work — work item for edge state changes 💀

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🦋 SEE ALSO 🦋

go check these out too, iykyk:

• Kernel file ./drivers/rpmsg/qcom_smd.c
• struct qcom_smd_channel(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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ngl if you made it this far you're lowkey a kernel girlie now. slay. 💅✨

mwah, that's the whole page babes — this beauty came from ./drivers/rpmsg, dated October 2026, and it's titled struct qcom_smd_edge(9). see u in the next manpage bestie 🎀💖