UNION AQMQ_DRBL(9)

💖 union aqmq_drbl(9) — Kernel API Manual 💖

🌸 NAME 🌸

okay bestie, welcome to the docs for union aqmq_drbl — the AQM Queue Doorbell Counter Registers. that's the whole name, and yes it's giving extremely specific register energy 💅✨

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🦋 SYNOPSIS 🦋

here's the exact shape, no cap — do not let the preprocessor lines scare you:

       union aqmq_drbl {
           u64 value;
           struct {
         #if (defined(__BIG_ENDIAN_BITFIELD));
             u64 raz_32_63 : 32;
             u64 dbell_count : 32;
         #else;
             u64 dbell_count : 32;
             u64 raz_32_63 : 32;
         #endif;
           };
        };

quick vibe check: there's a u64 value, plus an anonymous struct. inside that struct, under #if (defined(__BIG_ENDIAN_BITFIELD)); the order is raz_32_63 : 32 then dbell_count : 32; under the #else; branch it flips to dbell_count : 32 then raz_32_63 : 32. both branches close with #endif;. periodt 💫

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🎀 Members 🎀

these are the members the page lists, fr fr:

• {unnamed_struct} — anonymous
• dbell_count — Doorbell Counter
• dbell_count — Doorbell Counter

and yes, dbell_count shows up twice in the docs. I'm not duplicating it for fun — the page literally lists it twice 💀🫶

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🧚 SEE ALSO 🧚

go peek at these if you're in your research era 💜:

• Kernel file: ./drivers/crypto/cavium/nitrox/nitrox_csr.h
• union ucd_core_eid_ucode_block_num(9)
• union aqm_grp_execmsk_lo(9)
• union aqm_grp_execmsk_hi(9)
• union aqmq_qsz(9)
• union aqmq_cmp_thr(9)
• union aqmq_cmp_cnt(9)
• union aqmq_en(9)
• union aqmq_activity_stat(9)
• union emu_fuse_map(9)
• union emu_se_enable(9)
• union emu_ae_enable(9)
• union emu_wd_int_ena_w1s(9)
• union emu_ge_int_ena_w1s(9)
• union nps_pkt_slc_ctl(9)
• union nps_pkt_slc_cnts(9)
• union nps_pkt_slc_int_levels(9)
• union nps_pkt_in_done_cnts(9)
• union nps_pkt_in_instr_ctl(9)
• union nps_pkt_in_instr_rsize(9)
• union nps_pkt_in_instr_baoff_dbell(9)
• union nps_core_int_ena_w1s(9)
• union nps_core_gbl_vfcfg(9)
• union nps_core_int_active(9)
• union efl_core_int(9)
• union efl_core_int_ena_w1s(9)
• union efl_rnm_ctl_status(9)
• union bmi_ctl(9)
• union bmi_int_ena_w1s(9)
• union bmo_ctl2(9)
• union pom_int_ena_w1s(9)
• union lbc_inval_ctl(9)
• union lbc_int_ena_w1s(9)
• union lbc_int(9)
• union lbc_inval_status(9)
• union rst_boot(9)
• union fus_dat1(9)

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okay that's the whole manual page, bestie! source/version: ./drivers/crypto/cavium/nitrox · date: October 2026 🌈💖 slay 💖🌈