drivers/scsi/sym53c8xx_2/sym_nvram.h

Source file repositories/reference/linux-study-clean/drivers/scsi/sym53c8xx_2/sym_nvram.h

File Facts

System
Linux kernel
Corpus path
drivers/scsi/sym53c8xx_2/sym_nvram.h
Extension
.h
Size
5700 bytes
Lines
202
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct Symbios_nvram {
/* Header 6 bytes */
	u_short type;		/* 0x0000 */
	u_short byte_count;	/* excluding header/trailer */
	u_short checksum;

/* Controller set up 20 bytes */
	u_char	v_major;	/* 0x00 */
	u_char	v_minor;	/* 0x30 */
	u32	boot_crc;
	u_short	flags;
#define SYMBIOS_SCAM_ENABLE	(1)
#define SYMBIOS_PARITY_ENABLE	(1<<1)
#define SYMBIOS_VERBOSE_MSGS	(1<<2)
#define SYMBIOS_CHS_MAPPING	(1<<3)
#define SYMBIOS_NO_NVRAM	(1<<3)	/* ??? */
	u_short	flags1;
#define SYMBIOS_SCAN_HI_LO	(1)
	u_short	term_state;
#define SYMBIOS_TERM_CANT_PROGRAM	(0)
#define SYMBIOS_TERM_ENABLED		(1)
#define SYMBIOS_TERM_DISABLED		(2)
	u_short	rmvbl_flags;
#define SYMBIOS_RMVBL_NO_SUPPORT	(0)
#define SYMBIOS_RMVBL_BOOT_DEVICE	(1)
#define SYMBIOS_RMVBL_MEDIA_INSTALLED	(2)
	u_char	host_id;
	u_char	num_hba;	/* 0x04 */
	u_char	num_devices;	/* 0x10 */
	u_char	max_scam_devices;	/* 0x04 */
	u_char	num_valid_scam_devices;	/* 0x00 */
	u_char	flags2;
#define SYMBIOS_AVOID_BUS_RESET		(1<<2)

/* Boot order 14 bytes * 4 */
	struct Symbios_host{
		u_short	type;		/* 4:8xx / 0:nok */
		u_short	device_id;	/* PCI device id */
		u_short	vendor_id;	/* PCI vendor id */
		u_char	bus_nr;		/* PCI bus number */
		u_char	device_fn;	/* PCI device/function number << 3*/
		u_short	word8;
		u_short	flags;
#define	SYMBIOS_INIT_SCAN_AT_BOOT	(1)
		u_short	io_port;	/* PCI io_port address */
	} host[4];

/* Targets 8 bytes * 16 */
	struct Symbios_target {
		u_char	flags;
#define SYMBIOS_DISCONNECT_ENABLE	(1)
#define SYMBIOS_SCAN_AT_BOOT_TIME	(1<<1)
#define SYMBIOS_SCAN_LUNS		(1<<2)
#define SYMBIOS_QUEUE_TAGS_ENABLED	(1<<3)
		u_char	rsvd;
		u_char	bus_width;	/* 0x08/0x10 */
		u_char	sync_offset;
		u_short	sync_period;	/* 4*period factor */
		u_short	timeout;
	} target[16];
/* Scam table 8 bytes * 4 */
	struct Symbios_scam {
		u_short	id;
		u_short	method;
#define SYMBIOS_SCAM_DEFAULT_METHOD	(0)
#define SYMBIOS_SCAM_DONT_ASSIGN	(1)
#define SYMBIOS_SCAM_SET_SPECIFIC_ID	(2)
#define SYMBIOS_SCAM_USE_ORDER_GIVEN	(3)
		u_short status;
#define SYMBIOS_SCAM_UNKNOWN		(0)
#define SYMBIOS_SCAM_DEVICE_NOT_FOUND	(1)
#define SYMBIOS_SCAM_ID_NOT_SET		(2)
#define SYMBIOS_SCAM_ID_VALID		(3)
		u_char	target_id;
		u_char	rsvd;
	} scam[4];

	u_char	spare_devices[15*8];
	u_char	trailer[6];		/* 0xfe 0xfe 0x00 0x00 0x00 0x00 */
};
typedef struct Symbios_nvram	Symbios_nvram;
typedef struct Symbios_host	Symbios_host;
typedef struct Symbios_target	Symbios_target;
typedef struct Symbios_scam	Symbios_scam;

/*
 *	Tekram NvRAM data format.
 */
#define TEKRAM_NVRAM_SIZE 64
#define TEKRAM_93C46_NVRAM_ADDRESS 0

Annotation

Implementation Notes