cik_cp_gfx_start(9)

💅 cik_cp_gfx_start(9) — like, the Kernel API Manual page, bestie 🎀

okay so real talk: this is a page straight out of the Kernel API Manual, section 9, and the star of the show is cik_cp_gfx_start. it's a tiny little function with a big job and i'm obsessed. let's go ✨

---

🌸 NAME

cik_cp_gfx_start — start the gfx ring 🌀

---

🦋 SYNOPSIS

int cik_cp_gfx_start (struct radeon_device *rdev );

---

💖 ARGUMENTS

• rdev — a radeon_device pointer. that's it. that's the whole argument list. she's low maintenance, she's iconic 💅

---

👑 DESCRIPTION

so what does she do? she enables the ring, and she loads the clear state context plus all the other packets you need to init the ring. like she's setting up the whole vibe before the party starts 🎉 returns 0 for success, and an error for failure. no cap, that's genuinely the whole deal.

---

🌈 SEE ALSO

• Kernel file ./drivers/gpu/drm/radeon/cik.c
• 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_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_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, that's a lot of cross-references and yes i listed every single one, because leaving them out would be a crime fr fr 🫶

---

and that's the whole page, bestie!! 🧚✨ it lives over in ./drivers/gpu/drm/radeon and the page itself is dated October 2026 — go off, calendar queen 💜🎀⭐