drivers/gpu/drm/amd/display/dc/inc/hw/mem_input.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/display/dc/inc/hw/mem_input.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/display/dc/inc/hw/mem_input.h
Extension
.h
Size
5648 bytes
Lines
195
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 cstate_pstate_watermarks_st {
	uint32_t cstate_exit_ns;
	uint32_t cstate_exit_z8_ns;
	uint32_t cstate_enter_plus_exit_z8_ns;
	uint32_t cstate_enter_plus_exit_ns;
	uint32_t pstate_change_ns;
	uint32_t fclk_pstate_change_ns;
};

struct dcn_watermarks {
	uint32_t pte_meta_urgent_ns;
	uint32_t urgent_ns;
	uint32_t frac_urg_bw_nom;
	uint32_t frac_urg_bw_flip;
	uint32_t urgent_latency_ns;
	struct cstate_pstate_watermarks_st cstate_pstate;
	uint32_t usr_retraining_ns;
};

union dcn_watermark_set {
	struct {
		struct dcn_watermarks a;
		struct dcn_watermarks b;
		struct dcn_watermarks c;
		struct dcn_watermarks d;
	}; // legacy
	struct {
		struct dml2_dchub_watermark_regs a;
		struct dml2_dchub_watermark_regs b;
		struct dml2_dchub_watermark_regs c;
		struct dml2_dchub_watermark_regs d;
	} dcn4x; //dcn4+
};

struct dce_watermarks {
	int a_mark;
	int b_mark;
	int c_mark;
	int d_mark;
};

struct stutter_modes {
	bool enhanced;
	bool quad_dmif_buffer;
	bool watermark_nb_pstate;
};

struct mem_input {
	const struct mem_input_funcs *funcs;
	struct dc_context *ctx;
	struct dc_plane_address request_address;
	struct dc_plane_address current_address;
	int inst;
	struct stutter_modes stutter_mode;
};

struct vm_system_aperture_param {
	PHYSICAL_ADDRESS_LOC sys_default;
	PHYSICAL_ADDRESS_LOC sys_low;
	PHYSICAL_ADDRESS_LOC sys_high;
};

struct vm_context0_param {
	PHYSICAL_ADDRESS_LOC pte_base;
	PHYSICAL_ADDRESS_LOC pte_start;
	PHYSICAL_ADDRESS_LOC pte_end;
	PHYSICAL_ADDRESS_LOC fault_default;
};

struct mem_input_funcs {
	void (*mem_input_setup)(
			struct mem_input *mem_input,
			struct _vcs_dpi_display_dlg_regs_st *dlg_regs,
			struct _vcs_dpi_display_ttu_regs_st *ttu_regs,
			struct _vcs_dpi_display_rq_regs_st *rq_regs,
			struct _vcs_dpi_display_pipe_dest_params_st *pipe_dest);

	void (*dcc_control)(struct mem_input *mem_input, bool enable,
			bool independent_64b_blks);
	void (*mem_program_viewport)(
			struct mem_input *mem_input,
			const struct rect *viewport,
			const struct rect *viewport_c);

	void (*mem_input_program_display_marks)(
		struct mem_input *mem_input,
		struct dce_watermarks nbp,
		struct dce_watermarks stutter,
		struct dce_watermarks stutter_enter,
		struct dce_watermarks urgent,

Annotation

Implementation Notes