STRUCT CPPI5_TR_TYPE3_T(9)

💅 struct cppi5_tr_type3_t(9) — the Kernel API Manual tea 🎀

okay so bestie, welcome to the glow-up of struct cppi5_tr_type3_t(9) — it's a Type 3 (Four dimensional data move) TR (32 byte) and honestly? it's giving main character energy in the DMA world ✨ (this lil page lives in the Kernel API Manual, iykyk 🦋)

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✨ NAME ✨

struct cppi5_tr_type3_t — a Type 3 (Four dimensional data move) TR (32 byte). four whole dimensions of data-move realness, no cap 💅

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🌸 SYNOPSIS 🌸

struct cppi5_tr_type3_t {
    cppi5_tr_flags_t flags;
    u16 icnt0;
    u16 icnt1;
    u64 addr;
    s32 dim1;
    u16 icnt2;
    u16 icnt3;
    s32 dim2;
    s32 dim3;
 };

look at her 🫶 nine fields, perfectly stacked, absolutely iconic.

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👑 MEMBERS 👑

• flags — the TR flags, aka the whole personality: type, triggers, event, configuration 💖
• icnt0 — total loop iteration count for level 0 (the innermost one, the baby of the loop family 🙈)
• icnt1 — total loop iteration count for level 1
• addr — the starting address for the source data or the destination data 📍 (yes, either one — she's flexible)
• dim1 — signed dimension for loop level 1
• icnt2 — total loop iteration count for level 2
• icnt3 — total loop iteration count for level 3 (the outermost one, the big sis of the loop family 👑)
• dim2 — signed dimension for loop level 2
• dim3 — signed dimension for loop level 3

lowkey important: dim1, dim2, and dim3 are signed 🌈 — they're s32, not u32, so don't come for me when negative values show up. that's literally the point, bestie 💀

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🦋 SEE ALSO 🦋

the whole friend group fr fr, all chillin' in the kernel file ./include/linux/dma/ti-cppi5.h:

• struct cppi5_desc_hdr_t(9)
• struct cppi5_host_desc_t(9)
• struct cppi5_desc_epib_t(9)
• struct cppi5_monolithic_desc_t(9)
• cppi5_desc_is_tdcm(9)
• cppi5_desc_get_type(9)
• cppi5_desc_get_errflags(9)
• cppi5_desc_get_pktids(9)
• cppi5_desc_set_pktids(9)
• cppi5_desc_set_retpolicy(9)
• cppi5_desc_get_tags_ids(9)
• cppi5_desc_set_tags_ids(9)
• cppi5_hdesc_calc_size(9)
• cppi5_hdesc_init(9)
• cppi5_hdesc_update_flags(9)
• cppi5_hdesc_update_psdata_size(9)
• cppi5_hdesc_get_psdata_size(9)
• cppi5_hdesc_get_pktlen(9)
• cppi5_hdesc_set_pktlen(9)
• cppi5_hdesc_get_psflags(9)
• cppi5_hdesc_set_psflags(9)
• cppi5_hdesc_get_pkttype(9)
• cppi5_hdesc_set_pkttype(9)
• cppi5_hdesc_attach_buf(9)
• cppi5_hdesc_link_hbdesc(9)
• cppi5_hdesc_epib_present(9)
• cppi5_hdesc_get_psdata(9)
• cppi5_hdesc_get_swdata(9)
• enum cppi5_tr_types(9)
• enum cppi5_tr_event_size(9)
• enum cppi5_tr_trigger(9)
• enum cppi5_tr_trigger_type(9)
• struct cppi5_tr_type0_t(9)
• struct cppi5_tr_type1_t(9)
• struct cppi5_tr_type2_t(9)
• struct cppi5_tr_type15_t(9)
• struct cppi5_tr_resp_t(9)
• enum cppi5_tr_resp_status_type(9)
• enum cppi5_tr_resp_status_submission(9)
• enum cppi5_tr_resp_status_unsupported(9)
• cppi5_trdesc_calc_size(9)
• cppi5_trdesc_init(9)
• cppi5_tr_init(9)
• cppi5_tr_set_trigger(9)
• cppi5_tr_csf_set(9)

like, that's the entire group chat and every single one of them ate 🔥

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and that's the whole page babes, mwah 🫶 this came straight out of ./include/linux/dma, dated October 2026, and yes the page itself is literally named struct cppi5_tr_type3_t(9) — periodt 💅⭐