STRUCT CTI_CONFIG(9)

💜 struct cti_config(9) 💜

okay so bestie, welcome to the Kernel API Manual — this page is literally all about struct cti_config, and it's giving "configuration of the CTI device hardware" ✨ periodt.

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🌸 NAME 🌸

struct cti_config — the configuration of the CTI device hardware. that's it, that's the whole vibe 🫶

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🦋 SYNOPSIS 🦋

here's the struct in all its glory, no cap, every field exactly where it lives:

struct cti_config {
    int nr_ctm_channels;
    int nr_trig_max;
    bool asicctl_impl;
    int enable_req_count;
    u32 trig_in_use;
    u32 trig_out_use;
    u32 trig_out_filter;
    bool trig_filter_enable;
    u8 xtrig_rchan_sel;
    u32 ctiappset;
    u8 ctiinout_sel;
    u32 ctiinen[CTIINOUTEN_MAX];
    u32 ctiouten[CTIINOUTEN_MAX];
    u32 ctigate;
    u32 asicctl;
 };

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🎀 Members 🎀

like, one by one, let's go 👑

• nr_ctm_channels — how many CTM channels you've got available. it's pulled straight from the ID register, iykyk 🔥
• nr_trig_max — the max number of trigger signals implemented on the device. specifically it's the max of trig_in or trig_out — and yeah, also straight from the ID register 💅
• asicctl_impl — true if asicctl is implemented. love that for you 💖
• enable_req_count — CTI is enabled alongside >=1 associated devices. literally a counter of enabling 💀
• trig_in_use — bitfield of in triggers registered as in use. bits and bytes bestie 🌈
• trig_out_use — bitfield of out triggers registered as in use. same energy, different direction ⭐
• trig_out_filter — bitfield of out triggers that get blocked if the filter is enabled. typically this would be dbgreq / restart on a core CTI 👀
• trig_filter_enable — 1 if filtering is enabled. not 0, not maybe, just 1 ✨
• xtrig_rchan_sel — channel selection for the xtrigger connection show 🦋
• ctiappset — CTI Software application channel set 🎀
• ctiinout_sel — the register selector for the INEN and OUTEN regs 🧚
• ctiinen — enable input trigger to a channel 💜
• ctiouten — enable output trigger from a channel 💜
• ctigate — gate channel output from CTI to CTM. gatekeeping, but make it hardware 💅
• asicctl — asic control register. the asic of it all 🔥

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🫶 SEE ALSO 🫶

• the kernel file ./drivers/hwtracing/coresight/coresight-cti.h
• struct cti_device(9)
• struct cti_drvdata(9)

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ngl bestie, if you're digging around in here you're probably already deep in ./drivers/hwtracing/coresight — go read the friends above, they're iconic 👑

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okay that's the page!! huge shoutout to the source path ./drivers/hwtracing/coresight and the version stamp October 2026 — yeah, October 2026, she's from the future, main character energy fr fr 😭💖 slay, go configure some CTI hardware, mwah 🎀✨