STRUCT PCI_MEM_REGION(9)

💅 struct pci_mem_region(9)

okay so bestie, welcome to the Kernel API Manual ✨ — we're talking about struct pci_mem_region, and no, it's not that deep, it's literally just the way we describe a memory region inside a PCI bar 🎀. Like, that's the whole vibe. it's giving "small struct, big purpose." 💖

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🌸 NAME

struct pci_mem_region — describe memory region in a PCI bar 🦋

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✨ SYNOPSIS

struct pci_mem_region {
    u64 region_base;
    u64 region_size;
    u64 bar_size;
    u64 offset_in_bar;
    u8 bar_id;
    u8 used;
 };

that's the whole thing, bestie. six fields. not me being obsessed with how tidy this is 😭💅

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👑 Members

• region_base — the region base address 🫶 like, where the region starts, that's it, that's the field
• region_size — the region size 🌸 how big the region is
• bar_size — size of the BAR ⭐ yes, the BAR, capital letters, iconic
• offset_in_bar — region offset into the bar 🎀 like where the region sits inside the bar, iykyk
• bar_id — bar ID of the region 💜 which bar it belongs to
• used — if used 1, otherwise 0 🦋 literally exactly that. 1 = used, 0 = not used. no in-between, periodt

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🔥 SEE ALSO

okay this is the part where the list goes feral 💀 but every single one of these matters, so buckle up bestie:

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

• 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_sync_stream_properties(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 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)

like I said. feral. 💀🔥 but we read all of them, bestie, we don't skip. 🫶

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ngl if you got this far you're lowkey a kernel girlie now 💅 the way that list just kept going and you stayed? main character energy fr fr 🌈

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okay bye bestie, go touch some PCI bars 💖 — this page came from ./drivers/accel/habanalabs/common, dated October 2026, and it's filed under struct pci_mem_region(9) if you ever need to find it again. slay 🎀✨🌸