drivers/gpu/drm/amd/amdgpu/atom.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/amdgpu/atom.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/amdgpu/atom.h
Extension
.h
Size
5129 bytes
Lines
176
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 card_info {
	struct drm_device *dev;
	void (*reg_write)(struct card_info *info,
			  u32 reg, uint32_t val);   /*  filled by driver */
	uint32_t (*reg_read)(struct card_info *info, uint32_t reg);          /*  filled by driver */
	void (*mc_write)(struct card_info *info,
			 u32 reg, uint32_t val);   /*  filled by driver */
	uint32_t (*mc_read)(struct card_info *info, uint32_t reg);          /*  filled by driver */
	void (*pll_write)(struct card_info *info,
			  u32 reg, uint32_t val);   /*  filled by driver */
	uint32_t (*pll_read)(struct card_info *info, uint32_t reg);          /*  filled by driver */
};

struct atom_context {
	struct card_info *card;
	struct mutex mutex;
	void *bios;
	uint32_t cmd_table, data_table;
	uint16_t *iio;

	uint16_t data_block;
	uint32_t fb_base;
	uint32_t divmul[2];
	uint16_t io_attr;
	uint16_t reg_block;
	uint8_t shift;
	int cs_equal, cs_above;
	int io_mode;
	uint32_t *scratch;
	int scratch_size_bytes;

	uint8_t name[STRLEN_LONG];
	uint8_t vbios_pn[STRLEN_LONG];
	uint32_t version;
	uint8_t vbios_ver_str[STRLEN_NORMAL];
	uint8_t date[STRLEN_NORMAL];
	uint8_t build_num[STRLEN_NORMAL];

	/* Nesting depth for ATOM_OP_CALLTABLE */
	unsigned int execute_depth;
};

extern int amdgpu_atom_debug;

struct atom_context *amdgpu_atom_parse(struct card_info *card, void *bios);
int amdgpu_atom_execute_table(struct atom_context *ctx, int index, uint32_t *params, int params_size);
int amdgpu_atom_asic_init(struct atom_context *ctx);
void amdgpu_atom_destroy(struct atom_context *ctx);
bool amdgpu_atom_parse_data_header(struct atom_context *ctx, int index, uint16_t *size,
			    uint8_t *frev, uint8_t *crev, uint16_t *data_start);
bool amdgpu_atom_parse_cmd_header(struct atom_context *ctx, int index,
			   uint8_t *frev, uint8_t *crev);
#include "atom-types.h"
#include "atombios.h"
#include "ObjectID.h"

#endif

Annotation

Implementation Notes