drivers/scsi/mac53c94.h

Source file repositories/reference/linux-study-clean/drivers/scsi/mac53c94.h

File Facts

System
Linux kernel
Corpus path
drivers/scsi/mac53c94.h
Extension
.h
Size
5268 bytes
Lines
227
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 mac53c94_regs {
	unsigned char	count_lo;
	char pad0[15];
	unsigned char	count_mid;
	char pad1[15];
	unsigned char	fifo;
	char pad2[15];
	unsigned char	command;
	char pad3[15];
	unsigned char	status;
	char pad4[15];
	unsigned char	interrupt;
	char pad5[15];
	unsigned char	seqstep;
	char pad6[15];
	unsigned char	flags;
	char pad7[15];
	unsigned char	config1;
	char pad8[15];
	unsigned char	clk_factor;
	char pad9[15];
	unsigned char	test;
	char pad10[15];
	unsigned char	config2;
	char pad11[15];
	unsigned char	config3;
	char pad12[15];
	unsigned char	config4;
	char pad13[15];
	unsigned char	count_hi;
	char pad14[15];
	unsigned char	fifo_res;
	char pad15[15];
};

/*
 * Alternate functions for some registers.
 */
#define dest_id		status
#define sel_timeout	interrupt
#define sync_period	seqstep
#define sync_offset	flags

/*
 * Bits in command register.
 */
#define CMD_DMA_MODE	0x80
#define CMD_MODE_MASK	0x70
#define CMD_MODE_INIT	0x10
#define CMD_MODE_TARG	0x20
#define CMD_MODE_DISC	0x40

#define CMD_NOP		0
#define CMD_FLUSH	1
#define CMD_RESET	2
#define CMD_SCSI_RESET	3

#define CMD_XFER_DATA	0x10
#define CMD_I_COMPLETE	0x11
#define CMD_ACCEPT_MSG	0x12
#define CMD_XFER_PAD	0x18
#define CMD_SET_ATN	0x1a
#define CMD_CLR_ATN	0x1b

#define CMD_SEND_MSG	0x20
#define CMD_SEND_STATUS	0x21
#define CMD_SEND_DATA	0x22
#define CMD_DISC_SEQ	0x23
#define CMD_TERMINATE	0x24
#define CMD_T_COMPLETE	0x25
#define CMD_DISCONNECT	0x27
#define CMD_RECV_MSG	0x28
#define CMD_RECV_CDB	0x29
#define CMD_RECV_DATA	0x2a
#define CMD_RECV_CMD	0x2b
#define CMD_ABORT_DMA	0x04

#define CMD_RESELECT	0x40
#define CMD_SELECT	0x41
#define CMD_SELECT_ATN	0x42
#define CMD_SELATN_STOP	0x43
#define CMD_ENABLE_SEL	0x44
#define CMD_DISABLE_SEL	0x45
#define CMD_SEL_ATN3	0x46
#define CMD_RESEL_ATN3	0x47

/*
 * Bits in status register.
 */
#define STAT_IRQ	0x80

Annotation

Implementation Notes