drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.h
Extension
.h
Size
5610 bytes
Lines
148
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct dcn20_hubbub {
	struct hubbub base;
	const struct dcn_hubbub_registers *regs;
	const struct dcn_hubbub_shift *shifts;
	const struct dcn_hubbub_mask *masks;
	unsigned int debug_test_index_pstate;
	union dcn_watermark_set watermarks;
	int num_vmid;
	struct dcn20_vmid vmid[16];
	unsigned int detile_buf_size;
	unsigned int crb_size_segs;
	unsigned int compbuf_size_segments;
	unsigned int pixel_chunk_size;
	unsigned int det0_size;
	unsigned int det1_size;
	unsigned int det2_size;
	unsigned int det3_size;
	bool allow_sdpif_rate_limit_when_cstate_req;
};

void hubbub2_construct(struct dcn20_hubbub *hubbub,
	struct dc_context *ctx,
	const struct dcn_hubbub_registers *hubbub_regs,
	const struct dcn_hubbub_shift *hubbub_shift,
	const struct dcn_hubbub_mask *hubbub_mask);

bool hubbub2_dcc_support_swizzle(
		enum swizzle_mode_values swizzle,
		unsigned int bytes_per_element,
		enum segment_order *segment_order_horz,
		enum segment_order *segment_order_vert);

bool hubbub2_dcc_support_pixel_format(
		enum surface_pixel_format format,
		unsigned int *bytes_per_element);

bool hubbub2_get_dcc_compression_cap(struct hubbub *hubbub,
		const struct dc_dcc_surface_param *input,
		struct dc_surface_dcc_cap *output);

bool hubbub2_initialize_vmids(struct hubbub *hubbub,
		const struct dc_dcc_surface_param *input,
		struct dc_surface_dcc_cap *output);

int hubbub2_init_dchub_sys_ctx(struct hubbub *hubbub,
		struct dcn_hubbub_phys_addr_config *pa_config);
void hubbub2_init_vm_ctx(struct hubbub *hubbub,
		struct dcn_hubbub_virt_addr_config *va_config,
		int vmid);
void hubbub2_update_dchub(struct hubbub *hubbub,
		struct dchub_init_data *dh_data);

void hubbub2_get_dchub_ref_freq(struct hubbub *hubbub,
		unsigned int dccg_ref_freq_inKhz,
		unsigned int *dchub_ref_freq_inKhz);

void hubbub2_wm_read_state(struct hubbub *hubbub,
		struct dcn_hubbub_wm *wm);

void hubbub2_read_state(struct hubbub *hubbub,
		struct dcn_hubbub_state *hubbub_state);

/* Extract bits [47:24] of a physical address for hardware register fields */
#define ADDR_HI24(a)  ((uint32_t)((uint64_t)(a) >> 24))

#endif

Annotation

Implementation Notes