cik_rlc_resume(9)

💅 cik_rlc_resume(9) — like, the RLC setup era

okay so bestie, welcome to the Kernel API Manual page for cik_rlc_resume(9) — yes that's the whole title, she's a function in section 9, we love a kernel-space queen 👑

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✨ NAME ✨

cik_rlc_resume — sets up the RLC hw. that's it, that's the vibe. 🎀

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🌸 SYNOPSIS 🌸

int cik_rlc_resume (struct radeon_device *rdev );

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🦋 ARGUMENTS 🦋

• rdev — a radeon_device pointer. literally just the radeon device, that's her whole job 🫶

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💖 DESCRIPTION 💖

so what she actually does, no cap: she initializes the RLC registers, loads the ucode, and starts the RLC (CIK). the whole glow-up sequence ✨

and the receipts:

• returns 0 for success 💚
• returns -EINVAL if the ucode is not available 😭 (like, she can't start without her ucode, obviously)

ngl if you're seeing -EINVAL back, check that the ucode is actually around — she's not being dramatic, she just genuinely can't run without it.

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🔥 SEE ALSO 🔥

okay this list is LONG and honestly kind of iconic, so buckle up — first the kernel file:

• ./drivers/gpu/drm/radeon/cik.c

then the whole friend group, in order, exactly as they appear:

• cik_get_allowed_info_register(9), cik_get_xclk(9), cik_mm_rdoorbell(9), cik_mm_wdoorbell(9), cik_srbm_select(9), ci_mc_load_microcode(9), cik_init_microcode(9), cik_tiling_mode_table_init(9), cik_select_se_sh(9), cik_create_bitmask(9), cik_get_rb_disabled(9), cik_setup_rb(9), cik_gpu_init(9), cik_scratch_init(9), cik_ring_test(9), cik_hdp_flush_cp_ring_emit(9), cik_fence_gfx_ring_emit(9), cik_fence_compute_ring_emit(9), cik_semaphore_ring_emit(9), cik_copy_cpdma(9), cik_ring_ib_execute(9), cik_ib_test(9), cik_cp_gfx_enable(9), cik_cp_gfx_load_microcode(9), cik_cp_gfx_start(9), cik_cp_gfx_fini(9), cik_cp_gfx_resume(9), cik_cp_compute_enable(9), cik_cp_compute_load_microcode(9), cik_cp_compute_start(9), cik_cp_compute_fini(9), cik_cp_compute_resume(9), cik_gpu_check_soft_reset(9), cik_gpu_soft_reset(9), cik_asic_reset(9), cik_gfx_is_lockup(9), cik_mc_program(9), cik_mc_init(9), cik_pcie_gart_tlb_flush(9), cik_pcie_gart_enable(9), cik_pcie_gart_disable(9), cik_pcie_gart_fini(9), cik_ib_parse(9), cik_vm_init(9), cik_vm_fini(9), cik_vm_decode_fault(9), cik_rlc_stop(9), cik_rlc_start(9), cik_enable_interrupts(9), cik_disable_interrupts(9), cik_disable_interrupt_state(9), cik_irq_init(9), cik_irq_set(9), cik_irq_ack(9), cik_irq_disable(9), cik_irq_suspend(9), cik_irq_fini(9), cik_get_ih_wptr(9), cik_irq_process(9), cik_startup(9), cik_resume(9), cik_suspend(9), cik_init(9), cik_fini(9), dce8_line_buffer_adjust(9), cik_get_number_of_dram_channels(9), dce8_dram_bandwidth(9), dce8_dram_bandwidth_for_display(9), dce8_data_return_bandwidth(9), dce8_dmif_request_bandwidth(9), dce8_available_bandwidth(9), dce8_average_bandwidth(9), dce8_latency_watermark(9), dce8_average_bandwidth_vs_dram_bandwidth_for_display(9), dce8_average_bandwidth_vs_available_bandwidth(9), dce8_check_latency_hiding(9), dce8_program_watermarks(9), dce8_bandwidth_update(9), cik_get_gpu_clock_counter(9)

like… she knows everyone. main character energy fr fr 💅

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and that's the page bestie!! this lil masterpiece lives in ./drivers/gpu/drm/radeon, dated October 2026, and it's filed under cik_rlc_resume(9) — go forth and slay your RLC setup 🌈👑💜