cik_resume(9)

✨ cik_resume(9) ✨

okay so bestie, welcome to the cik_resume(9) page from the Kernel API Manual 🎀 this one's a lil function that wakes your AMD GPU (the CIK kind) back up, and honestly? she's the main character of the resume path 👑

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💖 NAME 💖

cik_resume — resume the asic to a functional state

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🌸 SYNOPSIS 🌸

int cik_resume (struct radeon_device *rdev );

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🦋 ARGUMENTS 🦋

• rdev — a radeon_device pointer 💅 that's the handle to the radeon device we're reviving, iykyk

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⭐ DESCRIPTION ⭐

So basically: cik_resume programs the asic to a functional state (CIK). 🫶 It gets called at resume, like when the GPU is coming back from its lil nap.

Returns 0 for success, error for failure — yes that's literally it, no cap 😭 so please, check the return value, bestie.

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🎀 SEE ALSO 🎀

The kernel file lives at ./drivers/gpu/drm/radeon/cik.c 🗂️ — and here's the whole girl squad of related calls:

• 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_rlc_resume(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_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)

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lowkey a serve that one manpage references this many friends fr fr 💀 go read them, they're all iconic 🌈

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and that's the page, bestie 🧚💜 this lil beauty comes from ./drivers/gpu/drm/radeon, dated October 2026, and yeah — it's still cik_resume(9) at the bottom too. slay 🍓✨