drivers/gpu/drm/qxl/qxl_dev.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/qxl/qxl_dev.h

Extension

.h

Size

18125 bytes

Lines

877

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.

• 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h

Detected Declarations

• struct qxl_point_fix
• struct qxl_point
• struct qxl_point_1_6
• struct qxl_rect
• struct qxl_urect
• struct qxl_rom
• struct qxl_mode
• struct qxl_modes
• struct qxl_command
• struct qxl_command_ext
• struct qxl_mem_slot
• struct qxl_surface_create
• struct qxl_ring_header
• struct qxl_ram_header
• struct qxl_release_info_ext
• struct qxl_data_chunk
• struct qxl_message
• struct qxl_compat_update_cmd
• struct qxl_update_cmd
• struct qxl_cursor_header
• struct qxl_cursor
• struct qxl_cursor_cmd
• struct qxl_raster_glyph
• struct qxl_string
• struct qxl_copy_bits
• struct qxl_pattern
• struct qxl_brush
• struct qxl_q_mask
• struct qxl_fill
• struct qxl_opaque
• struct qxl_copy
• struct qxl_transparent
• struct qxl_alpha_blend
• struct qxl_compat_alpha_blend
• struct qxl_rop_3
• struct qxl_line_attr
• struct qxl_stroke
• struct qxl_text
• struct qxl_mask
• struct qxl_clip
• struct qxl_transform
• struct qxl_composite
• struct qxl_compat_drawable
• struct qxl_drawable
• struct qxl_surface
• struct qxl_surface_cmd
• struct qxl_clip_rects
• struct qxl_path_seg

Annotated Snippet

struct qxl_point_fix {
	QXLFIXED x;
	QXLFIXED y;
};

struct qxl_point {
	int32_t x;
	int32_t y;
};

struct qxl_point_1_6 {
	int16_t x;
	int16_t y;
};

struct qxl_rect {
	int32_t top;
	int32_t left;
	int32_t bottom;
	int32_t right;
};

struct qxl_urect {
	uint32_t top;
	uint32_t left;
	uint32_t bottom;
	uint32_t right;
};

/* qxl-1 compat: append only */
struct qxl_rom {
	uint32_t magic;
	uint32_t id;
	uint32_t update_id;
	uint32_t compression_level;
	uint32_t log_level;
	uint32_t mode;			  /* qxl-1 */
	uint32_t modes_offset;
	uint32_t num_io_pages;
	uint32_t pages_offset;		  /* qxl-1 */
	uint32_t draw_area_offset;	  /* qxl-1 */
	uint32_t surface0_area_size;	  /* qxl-1 name: draw_area_size */
	uint32_t ram_header_offset;
	uint32_t mm_clock;
	/* appended for qxl-2 */
	uint32_t n_surfaces;
	uint64_t flags;
	uint8_t slots_start;
	uint8_t slots_end;
	uint8_t slot_gen_bits;
	uint8_t slot_id_bits;
	uint8_t slot_generation;
	/* appended for qxl-4 */
	uint8_t client_present;
	uint8_t client_capabilities[58];
	uint32_t client_monitors_config_crc;
	struct {
		uint16_t count;
	uint16_t padding;
		struct qxl_urect heads[64];
	} client_monitors_config;
};

/* qxl-1 compat: fixed */
struct qxl_mode {
	uint32_t id;
	uint32_t x_res;
	uint32_t y_res;
	uint32_t bits;
	uint32_t stride;
	uint32_t x_mili;
	uint32_t y_mili;
	uint32_t orientation;
};

/* qxl-1 compat: fixed */
struct qxl_modes {
	uint32_t n_modes;
	struct qxl_mode modes[];
};

/* qxl-1 compat: append only */
enum qxl_cmd_type {
	QXL_CMD_NOP,
	QXL_CMD_DRAW,
	QXL_CMD_UPDATE,
	QXL_CMD_CURSOR,
	QXL_CMD_MESSAGE,
	QXL_CMD_SURFACE,
};

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct qxl_point_fix`, `struct qxl_point`, `struct qxl_point_1_6`, `struct qxl_rect`, `struct qxl_urect`, `struct qxl_rom`, `struct qxl_mode`, `struct qxl_modes`, `struct qxl_command`, `struct qxl_command_ext`.
• Atlas domain: Driver Families / drivers/gpu.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.