cppi5_trdesc_init(9)

Hii bestie! Welcome to cppi5_trdesc_init(9) from the Kernel API Manual. This page is short and sweet, but it’s literally the “init the TR Descriptor” moment, so let’s do a vibe check and keep every detail intact 🫶✨

💖 NAME 💖

cppi5_trdesc_init — Init TR Descriptor

✨ SYNOPSIS ✨

void cppi5_trdesc_init (struct cppi5_desc_hdr_t *desc_hdr , u32 tr_count
, u32 tr_size , u32 reload_idx , u32 reload_count );

🎀 ARGUMENTS 🎀

• desc_hdr — TR Descriptor. That’s the descriptor, bestie, no cap 💅
• tr_count — number of TR records.
• tr_size — Nominal size of TR record (max) [16, 32, 64, 128]. It’s giving “pick your size from this exact list” ✨
• reload_idx — Absolute index to jump to on the 2nd and following passes through the TR packet.
• reload_count — Number of times to jump from last entry to reload_idx. 0x1ff indicates infinite looping. 👑

🌸 DESCRIPTION 🌸

Init TR Descriptor. That’s the whole description, bestie — the page is literally just confirming the init move, periodt 💖

🦋 SEE ALSO 🦋

• Kernel file ./include/linux/dma/ti-cppi5.h

The whole squad of related structs, enums, and functions:

• 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_type3_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_tr_init(9)
• cppi5_tr_set_trigger(9)
• cppi5_tr_csf_set(9)

That’s the page, bestie! It’s from the Kernel API Manual, page cppi5_trdesc_init(9), with source/version ./include/linux/dma and date October 2026. Stay iconic, keep your descriptors initialized, and slay the kernel 🌈💜