STRUCT RM_TI_SCI_MSG_UDMAP_RX_FLOW_OPT_CFG(9)

🌸 struct rm_ti_sci_msg_udmap_rx_flow_opt_cfg(9) — Kernel API Manual 🌸

okay bestie, welcome to the Kernel API Manual, pull up a chair 🫶 this one's all about the parameters for UDMAP receive flow optional configuration. yes it's a mouthful, no you don't have to say it out loud 💅

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✨ NAME ✨

struct rm_ti_sci_msg_udmap_rx_flow_opt_cfg — the parameters for UDMAP receive flow optional configuration. that's it, that's the vibe 🎀

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🦋 SYNOPSIS 🦋

struct rm_ti_sci_msg_udmap_rx_flow_opt_cfg {
    struct ti_sci_msg_hdr hdr;
    u32 nav_id;
    u32 flow_index;
    u32 rx_ch_index;
    u16 rx_size_thresh0;
    u16 rx_size_thresh1;
    u16 rx_size_thresh2;
    u16 rx_fdq0_sz1_qnum;
    u16 rx_fdq0_sz2_qnum;
    u16 rx_fdq0_sz3_qnum;
 };

literally just look at it. gorgeous. no notes. 🔥

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👑 Members 👑

okay so this is the part where we meet the whole cast, main character energy for every single field 💖

• hdr — the Generic Header. every struct's little passport, iykyk 🌈
• nav_id — the SoC Navigator Subsystem device ID that the receive flow gets allocated from. it's giving "where do you even come from" 🧚
• flow_index — the UDMAP receive flow index for optional configuration. this is the one you're configuring, bestie, don't lose it 💀
• rx_ch_index — specifies the index of the receive channel that's using the flow_index. the way these two are linked... obsessed 🎀
• rx_size_thresh0 — UDMAP receive flow packet size threshold 0. yes, zero. the first one ⭐
• rx_size_thresh1 — UDMAP receive flow packet size threshold 1. the sequel 🌸
• rx_size_thresh2 — UDMAP receive flow packet size threshold 2. the trilogy, complete 💜
• rx_fdq0_sz1_qnum — UDMAP receive flow free descriptor queue for size threshold 1. matching set with the threshold above, slay ✨
• rx_fdq0_sz2_qnum — UDMAP receive flow free descriptor queue for size threshold 2. same energy, different number 🦋
• rx_fdq0_sz3_qnum — UDMAP receive flow free descriptor queue for size threshold 3. yes threshold 3 — look, I just report what the struct says 🙈

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💅 Description 💅

so for the detailed info on all these settings, go read the UDMAP section of the TRM. that's the whole assignment, no cap 📚 — I'm not out here inventing lore that isn't in the original, periodt.

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🎀 SEE ALSO 🎀

Kernel file ./drivers/firmware/ti_sci.h, plus this whole friend group right here (all (9) man pages, obviously) 🫶

• struct ti_sci_msg_hdr(9)
• struct ti_sci_msg_resp_version(9)
• struct ti_sci_msg_req_reboot(9)
• struct ti_sci_msg_resp_query_fw_caps(9)
• struct ti_sci_msg_req_set_device_state(9)
• struct ti_sci_msg_req_get_device_state(9)
• struct ti_sci_msg_resp_get_device_state(9)
• struct ti_sci_msg_req_set_device_resets(9)
• struct ti_sci_msg_req_set_clock_state(9)
• struct ti_sci_msg_req_get_clock_state(9)
• struct ti_sci_msg_resp_get_clock_state(9)
• struct ti_sci_msg_req_set_clock_parent(9)
• struct ti_sci_msg_req_get_clock_parent(9)
• struct ti_sci_msg_resp_get_clock_parent(9)
• struct ti_sci_msg_req_get_clock_num_parents(9)
• struct ti_sci_msg_resp_get_clock_num_parents(9)
• struct ti_sci_msg_req_query_clock_freq(9)
• struct ti_sci_msg_resp_query_clock_freq(9)
• struct ti_sci_msg_req_set_clock_freq(9)
• struct ti_sci_msg_req_get_clock_freq(9)
• struct ti_sci_msg_resp_get_clock_freq(9)
• struct ti_sci_msg_req_prepare_sleep(9)
• struct ti_sci_msg_req_set_io_isolation(9)
• struct ti_sci_msg_resp_lpm_wake_reason(9)
• struct ti_sci_msg_req_lpm_set_device_constraint(9)
• struct ti_sci_msg_req_lpm_set_latency_constraint(9)
• struct ti_sci_msg_req_get_resource_range(9)
• struct ti_sci_msg_resp_get_resource_range(9)
• struct ti_sci_msg_req_manage_irq(9)
• struct ti_sci_msg_rm_ring_cfg_req(9)
• struct ti_sci_msg_psil_pair(9)
• struct ti_sci_msg_psil_unpair(9)
• struct ti_sci_msg_udmap_rx_flow_cfg(9)
• struct ti_sci_msg_rm_udmap_tx_ch_cfg_req(9)
• struct ti_sci_msg_rm_udmap_rx_ch_cfg_req(9)
• struct ti_sci_msg_rm_udmap_flow_cfg_req(9)
• struct ti_sci_msg_req_proc_request(9)
• struct ti_sci_msg_req_proc_release(9)
• struct ti_sci_msg_req_proc_handover(9)
• struct ti_sci_msg_req_set_config(9)
• struct ti_sci_msg_req_set_ctrl(9)
• struct ti_sci_msg_req_get_status(9)
• struct ti_sci_msg_resp_get_status(9)

like, go read them, they're all right there in ./drivers/firmware 😭💖

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ngl this page is short but it ate. no flags, no exit statuses, no scary warnings — just a struct being its best self 🌟

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and that's the whole page, bestie!! this lil drop came from ./drivers/firmware, version dated October 2026, and the page itself is struct rm_ti...flow_opt_cfg(9) — mwah, go forth and configure those receive flows 💅🎀✨