STRUCT QCOM_SMP2P(9)

📦 version 7.3.1, in nixpkgs unstable

✨ struct qcom_smp2p(9) ✨

okay bestie, welcome to the Kernel API Manual — we're looking at struct qcom_smp2p, which is literally the device driver context. that's the whole vibe. it's giving "i hold all the state so you don't have to" 💅

🎀 NAME 🎀

struct qcom_smp2p — device driver context. that's it, that's the name, she's concise and she knows it ✨

🌸 SYNOPSIS 🌸

here's the whole glow-up, bestie — every single field, exactly as written, no edits no cap:

struct qcom_smp2p {
    struct device *dev;
    struct smp2p_smem_item *in;
    struct smp2p_smem_item *out;
    unsigned smem_items[SMP2P_OUTBOUND + 1];
    unsigned valid_entries;
    bool ssr_ack_enabled;
    bool ssr_ack;
    bool negotiation_done;
    unsigned local_pid;
    unsigned remote_pid;
    struct regmap *ipc_regmap;
    int ipc_offset;
    int ipc_bit;
    struct mbox_client mbox_client;
    struct mbox_chan *mbox_chan;
    struct list_head inbound;
    struct list_head outbound;
 };

👑 Members 👑

okay so now we go field by field, main character by main character 🫶

  • dev — the device driver handle. she's the anchor, the home base, the it girl of the struct 🏠✨
  • in — pointer to the inbound smem item. incoming messages, we love to see it 💌
  • out — pointer to the outbound smem item. outgoing, obviously, she's booked and busy 📤🔥
  • smem_items — the ids of the two smem items. just the ids, two of them, iconic 🌈
  • valid_entries — already scanned inbound entries. like, we've done the reading bestie, we're caught up 📚💅
  • ssr_ack_enabled — SMP2P_FEATURE_SSR_ACK feature is supported and was enabled. yes both things, supported and enabled, she's thorough ✅
  • ssr_ack — current cached state of the local ack bit. cached! so we don't have to go ask again 🙈
  • negotiation_done — whether negotiating finished. the will-they-won't-they is over, it's settled 🎬
  • local_pid — processor id of the inbound edge. local, as in me, as in this side 💁‍♀️
  • remote_pid — processor id of the outbound edge. the other side, the pen pal, the faraway friend 🦋
  • ipc_regmap — regmap for the outbound ipc. the map of the outbound vibes 🗺️
  • ipc_offset — offset within the regmap. how far in, like, positionally 📍
  • ipc_bit — bit in regmapoffset to kick to signal remote processor. you kick the bit, the remote processor gets the message, everybody slays 🦵⚡
  • mbox_client — mailbox client handle. her mailbox, her rules 📬
  • mbox_chan — apcs ipc mailbox channel handle. yes it's a whole specific channel, say it with your chest 📢
  • inbound — list of inbound entries. the whole inbound squad, in list form 🧚
  • outbound — list of outbound entries. and the outbound squad too, matching set fr fr 👯‍♀️

💜 SEE ALSO 💜

go read these next, bestie, i'm obsessed with this little cluster of cross-references:

  • Kernel file ./drivers/soc/qcom/smp2p.c
  • struct smp2p_smem_item(9)
  • struct smp2p_entry(9)
  • qcom_smp2p_intr(9)
ok tiny PSA from me to you: this page is literally just a struct definition + member explanations. no dangerous flags, no deprecated anything, no undefined behaviour lurking in the shadows. you're safe to read this one in bed 🌙

anyway that's the whole thing!! sourced from ./drivers/soc/qcom, dated October 2026, and once again we're signing off from struct qcom_smp2p(9). mwah 💋✨🎀

📦 where this page comes from