STRUCT HL_SYNC_STREAM_PROPERTIES(9)

✨ NAME ✨

okay bestie, you're looking at the Kernel API Manual page for struct hl_sync_stream_properties(9). This struct literally describes a H/W queue sync stream's properties — it's giving "I keep the queue sync lore organized" energy 💅.

🦋 SYNOPSIS 🦋

struct hl_sync_stream_properties {
    struct hl_hw_sob hw_sob[HL_RSVD_SOBS];
    u16 next_sob_val;
    u16 base_sob_id;
    u16 base_mon_id;
    u16 collective_mstr_mon_id[HL_COLLECTIVE_RSVD_MSTR_MONS];
    u16 collective_slave_mon_id;
    u16 collective_sob_id;
    u8 curr_sob_offset;
};

💖 Members 💖

• hw_sob — the array of H/W SOBs that this H/W queue is actually using. no cap, it's the SOB lineup for this queue 🫶
• next_sob_val — the next value to use for the SOB that's currently in use.
• base_sob_id — the base SOB id of the SOBs used by this queue.
• base_mon_id — the base MON id of the MONs used by this queue.
• collective_mstr_mon_id — the MON ids of the MONs used by this master queue so it can sync with all slave queues. it's the master queue's little group-chat roster ✨
• collective_slave_mon_id — the MON id used by this slave queue to sync with its master queue.
• collective_sob_id — the current SOB id used by this collective slave queue to signal its collective master queue when it's done. iconic completion behavior, honestly 👑
• curr_sob_offset — the id offset to the currently used SOB from the HL_RSVD_SOBS that are being used by this queue.

🌈 SEE ALSO 🌈

Kernel file: ./drivers/accel/habanalabs/common/habanalabs.h

bestie, the whole friend group is here:

• enum hl_mmu_page_table_location(9), struct iterate_module_ctx(9), struct hl_gen_wait_properties(9), struct pgt_info(9), enum hl_pci_match_mode(9)
• enum hl_fw_component(9), enum hl_fw_types(9), enum hl_queue_type(9), struct hw_queue_properties(9), enum vm_type(9)
• enum mmu_op_flags(9), enum hl_device_hw_state(9), struct hl_mmu_properties(9), struct hl_hints_range(9), struct asic_fixed_properties(9)
• struct hl_fence(9), struct hl_cs_compl(9), struct hl_ts_buff(9), struct hl_mem_mgr(9), struct hl_mem_mgr_fini_stats(9)
• struct hl_mmap_mem_buf_behavior(9), struct hl_mmap_mem_buf(9), struct hl_cb(9), struct hl_encaps_signals_mgr(9), struct hl_hw_queue(9)
• struct hl_cq(9), struct hl_ts_free_jobs(9), struct hl_user_interrupt(9), struct timestamp_reg_free_node(9), struct hl_user_pending_interrupt(9)
• struct hl_eq(9), struct hl_dec(9), enum hl_asic_type(9), enum hl_pm_mng_profile(9), enum hl_pll_frequency(9)
• struct pci_mem_region(9), struct static_fw_load_mgr(9), struct fw_response(9), struct dynamic_fw_load_mgr(9), struct pre_fw_load_props(9)
• struct fw_image_props(9), struct fw_load_mgr(9), struct engines_data(9), struct hl_asic_funcs(9), enum hl_va_range_type(9)
• struct hl_va_range(9), struct hl_cs_counters_atomic(9), struct hl_dmabuf_priv(9), struct hl_cs_outcome(9), struct hl_cs_outcome_store(9)
• struct hl_ctx(9), struct hl_ctx_mgr(9), struct hl_userptr(9), struct hl_cs(9), struct hl_cs_job(9)
• struct hl_cs_parser(9), struct hl_vm_hash_node(9), struct hl_vm_hw_block_list_node(9), struct hl_vm_phys_pg_pack(9), struct hl_vm_va_block(9)
• struct hl_vm(9), struct hl_debug_params(9), struct hl_notifier_event(9), struct hl_fpriv(9), struct hl_info_list(9)
• struct hl_debugfs_entry(9), struct hl_dbg_device_entry(9), struct hl_debugfs_cfg_access_entry(9), struct hl_debugfs_cfg_access(9), struct hl_hw_obj_name_entry(9)
• struct hl_mon_state_dump(9), struct hl_sync_to_engine_map_entry(9), struct hl_sync_to_engine_map(9), struct hl_state_dump_specs_funcs(9), struct hl_state_dump_specs(9)
• struct hl_device_reset_work(9), struct hl_mmu_priv(9), struct hl_mmu_per_hop_info(9), struct hl_mmu_hop_info(9), struct hl_hr_mmu_funcs(9)
• struct hl_mmu_funcs(9), struct hl_prefetch_work(9), struct multi_cs_completion(9), struct multi_cs_data(9), struct hl_clk_throttle_timestamp(9)
• struct hl_clk_throttle(9), struct user_mapped_block(9), struct cs_timeout_info(9), struct undefined_opcode_info(9), struct page_fault_info(9)
• struct razwi_info(9), struct hw_err_info(9), struct fw_err_info(9), struct engine_err_info(9), struct hl_error_info(9)
• struct hl_reset_info(9), struct eq_heartbeat_debug_info(9), struct hl_device(9), struct hl_cs_encaps_sig_handle(9), struct hl_info_fw_err_info(9)
• hl_ioctl_t(9), struct hl_ioctl_desc(9), hl_get_sg_info(9), hl_mem_area_inside_range(9), hl_mem_area_crosses_range(9)

mwah 💋 — this page's source/version is ./drivers/accel/habanalabs/common, and the date on it is October 2026. periodt 🎀