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BSP 최초 추가
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#ifndef _SCSI_GENERIC_H
#define _SCSI_GENERIC_H
#include <linux/compiler.h>
#ifdef __KERNEL__
extern int sg_big_buff;
#endif
typedef struct sg_iovec
{
void __user *iov_base;
size_t iov_len;
} sg_iovec_t;
typedef struct sg_io_hdr
{
int interface_id;
int dxfer_direction;
unsigned char cmd_len;
unsigned char mx_sb_len;
unsigned short iovec_count;
unsigned int dxfer_len;
void __user *dxferp;
unsigned char __user *cmdp;
void __user *sbp;
unsigned int timeout;
unsigned int flags;
int pack_id;
void __user * usr_ptr;
unsigned char status;
unsigned char masked_status;
unsigned char msg_status;
unsigned char sb_len_wr;
unsigned short host_status;
unsigned short driver_status;
int resid;
unsigned int duration;
unsigned int info;
} sg_io_hdr_t;
#define SG_INTERFACE_ID_ORIG 'S'
#define SG_DXFER_NONE (-1) /* e.g. a SCSI Test Unit Ready command */
#define SG_DXFER_TO_DEV (-2) /* e.g. a SCSI WRITE command */
#define SG_DXFER_FROM_DEV (-3) /* e.g. a SCSI READ command */
#define SG_DXFER_TO_FROM_DEV (-4) /* treated like SG_DXFER_FROM_DEV with the
additional property than during indirect
IO the user buffer is copied into the
kernel buffers before the transfer */
#define SG_DXFER_UNKNOWN (-5) /* Unknown data direction */
#define SG_FLAG_DIRECT_IO 1 /* default is indirect IO */
#define SG_FLAG_UNUSED_LUN_INHIBIT 2 /* default is overwrite lun in SCSI */
#define SG_FLAG_MMAP_IO 4 /* request memory mapped IO */
#define SG_FLAG_NO_DXFER 0x10000 /* no transfer of kernel buffers to/from */
#define SG_INFO_OK_MASK 0x1
#define SG_INFO_OK 0x0 /* no sense, host nor driver "noise" */
#define SG_INFO_CHECK 0x1 /* something abnormal happened */
#define SG_INFO_DIRECT_IO_MASK 0x6
#define SG_INFO_INDIRECT_IO 0x0 /* data xfer via kernel buffers (or no xfer) */
#define SG_INFO_DIRECT_IO 0x2 /* direct IO requested and performed */
#define SG_INFO_MIXED_IO 0x4 /* part direct, part indirect IO */
typedef struct sg_scsi_id {
int host_no;
int channel;
int scsi_id;
int lun;
int scsi_type;
short h_cmd_per_lun;
short d_queue_depth;
int unused[2];
} sg_scsi_id_t;
typedef struct sg_req_info {
char req_state;
char orphan;
char sg_io_owned;
char problem;
int pack_id;
void __user *usr_ptr;
unsigned int duration;
int unused;
} sg_req_info_t;
#define SG_EMULATED_HOST 0x2203 /* true for emulated host adapter (ATAPI) */
#define SG_SET_TRANSFORM 0x2204 /* N.B. 3rd arg is not pointer but value: */
#define SG_GET_TRANSFORM 0x2205
#define SG_SET_RESERVED_SIZE 0x2275 /* request a new reserved buffer size */
#define SG_GET_RESERVED_SIZE 0x2272 /* actual size of reserved buffer */
#define SG_GET_SCSI_ID 0x2276 /* Yields fd's bus, chan, dev, lun + type */
#define SG_SET_FORCE_LOW_DMA 0x2279 /* 0-> use adapter setting, 1-> force */
#define SG_GET_LOW_DMA 0x227a /* 0-> use all ram for dma; 1-> low dma ram */
#define SG_SET_FORCE_PACK_ID 0x227b
#define SG_GET_PACK_ID 0x227c /* Yields oldest readable pack_id (or -1) */
#define SG_GET_NUM_WAITING 0x227d /* Number of commands awaiting read() */
#define SG_GET_SG_TABLESIZE 0x227F /* 0 implies can't do scatter gather */
#define SG_GET_VERSION_NUM 0x2282 /* Example: version 2.1.34 yields 20134 */
#define SG_SCSI_RESET 0x2284
#define SG_SCSI_RESET_NOTHING 0
#define SG_SCSI_RESET_DEVICE 1
#define SG_SCSI_RESET_BUS 2
#define SG_SCSI_RESET_HOST 3
#define SG_SCSI_RESET_TARGET 4
#define SG_IO 0x2285 /* similar effect as write() followed by read() */
#define SG_GET_REQUEST_TABLE 0x2286 /* yields table of active requests */
#define SG_SET_KEEP_ORPHAN 0x2287 /* 1 -> hold for read(), 0 -> drop (def) */
#define SG_GET_KEEP_ORPHAN 0x2288
#define SG_GET_ACCESS_COUNT 0x2289
#define SG_SCATTER_SZ (8 * 4096)
#define SG_DEFAULT_RETRIES 0
#define SG_DEF_FORCE_LOW_DMA 0 /* was 1 -> memory below 16MB on i386 */
#define SG_DEF_FORCE_PACK_ID 0
#define SG_DEF_KEEP_ORPHAN 0
#define SG_DEF_RESERVED_SIZE SG_SCATTER_SZ /* load time option */
#define SG_MAX_QUEUE 16
#define SG_BIG_BUFF SG_DEF_RESERVED_SIZE /* for backward compatibility */
typedef struct sg_io_hdr Sg_io_hdr;
typedef struct sg_io_vec Sg_io_vec;
typedef struct sg_scsi_id Sg_scsi_id;
typedef struct sg_req_info Sg_req_info;
#define SG_MAX_SENSE 16 /* this only applies to the sg_header interface */
struct sg_header
{
int pack_len;
int reply_len;
int pack_id;
int result;
unsigned int twelve_byte:1;
unsigned int target_status:5;
unsigned int host_status:8;
unsigned int driver_status:8;
unsigned int other_flags:10;
unsigned char sense_buffer[SG_MAX_SENSE];
};
#define SG_SET_TIMEOUT 0x2201 /* unit: jiffies (10ms on i386) */
#define SG_GET_TIMEOUT 0x2202 /* yield timeout as _return_ value */
#define SG_GET_COMMAND_Q 0x2270 /* Yields 0 (queuing off) or 1 (on) */
#define SG_SET_COMMAND_Q 0x2271 /* Change queuing state with 0 or 1 */
#define SG_SET_DEBUG 0x227e /* 0 -> turn off debug */
#define SG_NEXT_CMD_LEN 0x2283 /* override SCSI command length with given
number on the next write() on this file descriptor */
#ifdef __KERNEL__
#define SG_DEFAULT_TIMEOUT_USER (60*USER_HZ) /* HZ == 'jiffies in 1 second' */
#else
#define SG_DEFAULT_TIMEOUT (60*HZ) /* HZ == 'jiffies in 1 second' */
#endif
#define SG_DEF_COMMAND_Q 0 /* command queuing is always on when
the new interface is used */
#define SG_DEF_UNDERRUN_FLAG 0
#endif
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