drivers/scsi/qlogicpti.h

File Facts

System

Linux kernel

Corpus path

drivers/scsi/qlogicpti.h

Extension

.h

Size

19295 bytes

Lines

508

Domain

Driver Families

Bucket

drivers/scsi

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 Entry_header
• struct dataseg
• struct Command_Entry
• struct Ext_Command_Entry
• struct Continuation_Entry
• struct Marker_Entry
• struct Status_Entry
• struct host_param
• struct dev_param
• struct pti_queue_entry
• struct scsi_cmnd
• struct qlogicpti

Annotated Snippet

struct Entry_header {
#ifdef __BIG_ENDIAN
	u8	entry_cnt;
	u8	entry_type;
	u8	flags;
	u8	sys_def_1;
#else /* __LITTLE_ENDIAN */
	u8	entry_type;
	u8	entry_cnt;
	u8	sys_def_1;
	u8	flags;
#endif
};

/* entry header type commands */
#define ENTRY_COMMAND		1
#define ENTRY_CONTINUATION	2
#define ENTRY_STATUS		3
#define ENTRY_MARKER		4
#define ENTRY_EXTENDED_COMMAND	5

/* entry header flag definitions */
#define EFLAG_CONTINUATION	1
#define EFLAG_BUSY		2
#define EFLAG_BAD_HEADER	4
#define EFLAG_BAD_PAYLOAD	8

struct dataseg {
	u32	d_base;
	u32	d_count;
};

struct Command_Entry {
	struct Entry_header	hdr;
	u32			handle;
#ifdef __BIG_ENDIAN
	u8			target_id;
	u8			target_lun;
#else /* __LITTLE_ENDIAN */
	u8			target_lun;
	u8			target_id;
#endif
	u16			cdb_length;
	u16			control_flags;
	u16			rsvd;
	u16			time_out;
	u16			segment_cnt;
	u8			cdb[12];
	struct dataseg		dataseg[4];
};

/* command entry control flag definitions */
#define CFLAG_NODISC		0x01
#define CFLAG_HEAD_TAG		0x02
#define CFLAG_ORDERED_TAG	0x04
#define CFLAG_SIMPLE_TAG	0x08
#define CFLAG_TAR_RTN		0x10
#define CFLAG_READ		0x20
#define CFLAG_WRITE		0x40

struct Ext_Command_Entry {
	struct Entry_header	hdr;
	u32			handle;
#ifdef __BIG_ENDIAN
	u8			target_id;
	u8			target_lun;
#else /* __LITTLE_ENDIAN */
	u8			target_lun;
	u8			target_id;
#endif
	u16			cdb_length;
	u16			control_flags;
	u16			rsvd;
	u16			time_out;
	u16			segment_cnt;
	u8			cdb[44];
};

struct Continuation_Entry {
	struct Entry_header	hdr;
	u32			reserved;
	struct dataseg		dataseg[7];
};

struct Marker_Entry {
	struct Entry_header	hdr;
	u32			reserved;
#ifdef __BIG_ENDIAN
	u8			target_id;
	u8			target_lun;

Annotation

• Detected declarations: `struct Entry_header`, `struct dataseg`, `struct Command_Entry`, `struct Ext_Command_Entry`, `struct Continuation_Entry`, `struct Marker_Entry`, `struct Status_Entry`, `struct host_param`, `struct dev_param`, `struct pti_queue_entry`.
• Atlas domain: Driver Families / drivers/scsi.
• 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.