scsiconf.h

MIPS处理器的bootloader,龙芯就是用的修改过的PMON2

struct scsi_xfer {
	LIST_ENTRY(scsi_xfer) free_list;
	int	flags;
	struct	scsi_link *sc_link;	/* all about our device and adapter */
	int	retries;		/* the number of times to retry */
	int	timeout;		/* in milliseconds */
	struct	scsi_generic *cmd;	/* The scsi command to execute */
	int	cmdlen;			/* how long it is */
	u_char	*data;			/* dma address OR a uio address */
	int	datalen;		/* data len (blank if uio)    */
	size_t	resid;			/* how much buffer was not touched */
	int	error;			/* an error value	*/
	struct	buf *bp;		/* If we need to associate with a buf */
	struct	scsi_sense_data	sense; /* 32 bytes*/
	/*
	 * Believe it or not, Some targets fall on the ground with
	 * anything but a certain sense length.
	 */
	int	req_sense_length;	/* Explicit request sense length */
	u_int8_t status;		/* SCSI status */
	struct	scsi_generic cmdstore;	/* stash the command in here */
};

/*
 * Per-request Flag values
 */
#define	SCSI_NOSLEEP	0x00001	/* don't sleep */
#define	SCSI_POLL	0x00002	/* poll for completion */
#define	SCSI_AUTOCONF	0x00003	/* shorthand for SCSI_POLL | SCSI_NOSLEEP */
#define	SCSI_USER	0x00004	/* Is a user cmd, call scsi_user_done	*/
#define	ITSDONE		0x00008	/* the transfer is as done as it gets	*/
#define	SCSI_SILENT	0x00020	/* don't announce NOT READY or MEDIA CHANGE */
#define	SCSI_IGNORE_NOT_READY		0x00040	/* ignore NOT READY */
#define	SCSI_IGNORE_MEDIA_CHANGE	0x00080	/* ignore MEDIA CHANGE */
#define	SCSI_IGNORE_ILLEGAL_REQUEST	0x00100	/* ignore ILLEGAL REQUEST */
#define	SCSI_RESET	0x00200	/* Reset the device in question		*/
#define	SCSI_DATA_UIO	0x00400	/* The data address refers to a UIO	*/
#define	SCSI_DATA_IN	0x00800	/* expect data to come INTO memory	*/
#define	SCSI_DATA_OUT	0x01000	/* expect data to flow OUT of memory	*/
#define	SCSI_TARGET	0x02000	/* This defines a TARGET mode op.	*/
#define	SCSI_ESCAPE	0x04000	/* Escape operation			*/
#define SCSI_URGENT	0x08000	/* Urgent operation (e.g., HTAG)	*/
#define	SCSI_PRIVATE	0xf0000	/* private to each HBA flags */

/*
 * Escape op codes.  This provides an extensible setup for operations
 * that are not scsi commands.  They are intended for modal operations.
 */

#define SCSI_OP_TARGET	0x0001
#define	SCSI_OP_RESET	0x0002
#define	SCSI_OP_BDINFO	0x0003

/*
 * Error values an adapter driver may return
 */
#define XS_NOERROR	0	/* there is no error, (sense is invalid)  */
#define XS_SENSE	1	/* Check the returned sense for the error */
#define	XS_DRIVER_STUFFUP 2	/* Driver failed to perform operation	  */
#define XS_SELTIMEOUT	3	/* The device timed out.. turned off?	  */
#define XS_TIMEOUT	4	/* The Timeout reported was caught by SW  */
#define XS_BUSY		5	/* The device busy, try again later?	  */
#define XS_SHORTSENSE   6	/* Check the ATAPI sense for the error */
#define XS_RESET	8	/* bus was reset; possible retry command  */

caddr_t scsi_inqmatch __P((struct scsi_inquiry_data *, caddr_t, int,
	    int, int *));

void	scsi_init __P((void));
struct scsi_xfer *
	scsi_get_xs __P((struct scsi_link *, int));
void	scsi_free_xs __P((struct scsi_xfer *, int));
int	scsi_execute_xs __P((struct scsi_xfer *));
u_long	scsi_size __P((struct scsi_link *, int));
int	scsi_test_unit_ready __P((struct scsi_link *, int));
int	scsi_change_def __P((struct scsi_link *, int));
int	scsi_inquire __P((struct scsi_link *, struct scsi_inquiry_data *, int));
int	scsi_prevent __P((struct scsi_link *, int, int));
int	scsi_start __P((struct scsi_link *, int, int));
void	scsi_done __P((struct scsi_xfer *));
void	scsi_user_done __P((struct scsi_xfer *));
int	scsi_scsi_cmd __P((struct scsi_link *, struct scsi_generic *,
	    int cmdlen, u_char *data_addr, int datalen, int retries,
	    int timeout, struct buf *bp, int flags));
int	scsi_do_ioctl __P((struct scsi_link *, dev_t, u_long, caddr_t,
	    int, struct proc *));
int	scsi_do_safeioctl __P((struct scsi_link *, dev_t, u_long, caddr_t,
	    int, struct proc *));
void	sc_print_addr __P((struct scsi_link *));

void	show_scsi_xs __P((struct scsi_xfer *));
void	scsi_print_sense __P((struct scsi_xfer *, int));
void	show_scsi_cmd __P((struct scsi_xfer *));
void	show_mem __P((u_char *, int));
int	scsi_probe_busses __P((int, int, int));
void	scsi_strvis __P((u_char *, u_char *, int));

static __inline void _lto2b __P((u_int32_t val, u_int8_t *bytes));
static __inline void _lto3b __P((u_int32_t val, u_int8_t *bytes));
static __inline void _lto4b __P((u_int32_t val, u_int8_t *bytes));
static __inline u_int32_t _2btol __P((u_int8_t *bytes));
static __inline u_int32_t _3btol __P((u_int8_t *bytes));
static __inline u_int32_t _4btol __P((u_int8_t *bytes));

static __inline void _lto2l __P((u_int32_t val, u_int8_t *bytes));
static __inline void _lto3l __P((u_int32_t val, u_int8_t *bytes));
static __inline void _lto4l __P((u_int32_t val, u_int8_t *bytes));
static __inline u_int32_t _2ltol __P((u_int8_t *bytes));
static __inline u_int32_t _3ltol __P((u_int8_t *bytes));
static __inline u_int32_t _4ltol __P((u_int8_t *bytes));

static __inline void
_lto2b(val, bytes)
	u_int32_t val;
	u_int8_t *bytes;
{

	bytes[0] = (val >> 8) & 0xff;
	bytes[1] = val & 0xff;
}

static __inline void
_lto3b(val, bytes)
	u_int32_t val;
	u_int8_t *bytes;
{

	bytes[0] = (val >> 16) & 0xff;
	bytes[1] = (val >> 8) & 0xff;
	bytes[2] = val & 0xff;
}

static __inline void
_lto4b(val, bytes)
	u_int32_t val;
	u_int8_t *bytes;
{

	bytes[0] = (val >> 24) & 0xff;
	bytes[1] = (val >> 16) & 0xff;
	bytes[2] = (val >> 8) & 0xff;
	bytes[3] = val & 0xff;
}

static __inline u_int32_t
_2btol(bytes)
	u_int8_t *bytes;
{
	register u_int32_t rv;

	rv = (bytes[0] << 8) | bytes[1];
	return (rv);
}

static __inline u_int32_t
_3btol(bytes)
	u_int8_t *bytes;
{
	register u_int32_t rv;

	rv = (bytes[0] << 16) | (bytes[1] << 8) | bytes[2];
	return (rv);
}

static __inline u_int32_t
_4btol(bytes)
	u_int8_t *bytes;
{
	register u_int32_t rv;

	rv = (bytes[0] << 24) | (bytes[1] << 16) |
	    (bytes[2] << 8) | bytes[3];
	return (rv);
}

static __inline void
_lto2l(val, bytes)
	u_int32_t val;
	u_int8_t *bytes;
{

	bytes[0] = val & 0xff;
	bytes[1] = (val >> 8) & 0xff;
}

static __inline void
_lto3l(val, bytes)
	u_int32_t val;
	u_int8_t *bytes;
{

	bytes[0] = val & 0xff;
	bytes[1] = (val >> 8) & 0xff;
	bytes[2] = (val >> 16) & 0xff;
}

static __inline void
_lto4l(val, bytes)
	u_int32_t val;
	u_int8_t *bytes;
{

	bytes[0] = val & 0xff;
	bytes[1] = (val >> 8) & 0xff;
	bytes[2] = (val >> 16) & 0xff;
	bytes[3] = (val >> 24) & 0xff;
}

static __inline u_int32_t
_2ltol(bytes)
	u_int8_t *bytes;
{
	register u_int32_t rv;

	rv = bytes[0] | (bytes[1] << 8);
	return (rv);
}

static __inline u_int32_t
_3ltol(bytes)
	u_int8_t *bytes;
{
	register u_int32_t rv;

	rv = bytes[0] | (bytes[1] << 8) | (bytes[2] << 16);
	return (rv);
}

static __inline u_int32_t
_4ltol(bytes)
	u_int8_t *bytes;
{
	register u_int32_t rv;

	rv = bytes[0] | (bytes[1] << 8) |
	    (bytes[2] << 16) | (bytes[3] << 24);
	return (rv);
}

#endif /* SCSI_SCSICONF_H */