drivers/misc/ibmasm/dot_command.h

File Facts

System

Linux kernel

Corpus path

drivers/misc/ibmasm/dot_command.h

Extension

.h

Size

1588 bytes

Lines

65

Domain

Driver Families

Bucket

drivers/misc

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

• No C-style include directives detected by the generator.

Detected Declarations

• struct dot_command_header
• function get_dot_command_size
• function get_dot_command_timeout

Annotated Snippet

struct dot_command_header {
	u8	type;
	u8	command_size;
	u16	data_size;
	u8	status;
	u8	reserved;
};
#pragma pack()

static inline size_t get_dot_command_size(void *buffer)
{
	struct dot_command_header *cmd = (struct dot_command_header *)buffer;
	return sizeof(struct dot_command_header) + cmd->command_size + cmd->data_size;
}

static inline unsigned int get_dot_command_timeout(void *buffer)
{
	struct dot_command_header *header = (struct dot_command_header *)buffer;
	unsigned char *cmd = buffer + sizeof(struct dot_command_header);

	/* dot commands 6.3.1, 7.1 and 8.x need a longer timeout */

	if (header->command_size == 3) {
		if ((cmd[0] == 6) && (cmd[1] == 3) && (cmd[2] == 1))
			return IBMASM_CMD_TIMEOUT_EXTRA;
	} else if (header->command_size == 2) {
		if ((cmd[0] == 7) && (cmd[1] == 1))
			return IBMASM_CMD_TIMEOUT_EXTRA;
		if (cmd[0] == 8)
			return IBMASM_CMD_TIMEOUT_EXTRA;
	}
	return IBMASM_CMD_TIMEOUT_NORMAL;
}

#endif /* __DOT_COMMAND_H__ */

Annotation

• Detected declarations: `struct dot_command_header`, `function get_dot_command_size`, `function get_dot_command_timeout`.
• Atlas domain: Driver Families / drivers/misc.
• 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.