1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
#ifndef _SCSI_SCSI_REQUEST_H
|
|
#define _SCSI_SCSI_REQUEST_H
|
|
|
|
#include <scsi/scsi_cmnd.h>
|
|
|
|
struct request;
|
|
struct scsi_cmnd;
|
|
struct scsi_device;
|
|
struct Scsi_Host;
|
|
|
|
|
|
/*
|
|
* This is essentially a slimmed down version of Scsi_Cmnd. The point of
|
|
* having this is that requests that are injected into the queue as result
|
|
* of things like ioctls and character devices shouldn't be using a
|
|
* Scsi_Cmnd until such a time that the command is actually at the head
|
|
* of the queue and being sent to the driver.
|
|
*/
|
|
struct scsi_request {
|
|
int sr_magic;
|
|
int sr_result; /* Status code from lower level driver */
|
|
unsigned char sr_sense_buffer[SCSI_SENSE_BUFFERSIZE]; /* obtained by REQUEST SENSE
|
|
* when CHECK CONDITION is
|
|
* received on original command
|
|
* (auto-sense) */
|
|
|
|
struct Scsi_Host *sr_host;
|
|
struct scsi_device *sr_device;
|
|
struct scsi_cmnd *sr_command;
|
|
struct request *sr_request; /* A copy of the command we are
|
|
working on */
|
|
unsigned sr_bufflen; /* Size of data buffer */
|
|
void *sr_buffer; /* Data buffer */
|
|
int sr_allowed;
|
|
enum dma_data_direction sr_data_direction;
|
|
unsigned char sr_cmd_len;
|
|
unsigned char sr_cmnd[MAX_COMMAND_SIZE];
|
|
void (*sr_done) (struct scsi_cmnd *); /* Mid-level done function */
|
|
int sr_timeout_per_command;
|
|
unsigned short sr_use_sg; /* Number of pieces of scatter-gather */
|
|
unsigned short sr_sglist_len; /* size of malloc'd scatter-gather list */
|
|
unsigned sr_underflow; /* Return error if less than
|
|
this amount is transferred */
|
|
void *upper_private_data; /* reserved for owner (usually upper
|
|
level driver) of this request */
|
|
};
|
|
|
|
extern struct scsi_request *scsi_allocate_request(struct scsi_device *, int);
|
|
extern void scsi_release_request(struct scsi_request *);
|
|
extern void scsi_wait_req(struct scsi_request *, const void *cmnd,
|
|
void *buffer, unsigned bufflen,
|
|
int timeout, int retries);
|
|
extern void scsi_do_req(struct scsi_request *, const void *cmnd,
|
|
void *buffer, unsigned bufflen,
|
|
void (*done) (struct scsi_cmnd *),
|
|
int timeout, int retries);
|
|
|
|
struct scsi_mode_data {
|
|
__u32 length;
|
|
__u16 block_descriptor_length;
|
|
__u8 medium_type;
|
|
__u8 device_specific;
|
|
__u8 header_length;
|
|
__u8 longlba:1;
|
|
};
|
|
|
|
extern int __scsi_mode_sense(struct scsi_request *SRpnt, int dbd,
|
|
int modepage, unsigned char *buffer, int len,
|
|
int timeout, int retries,
|
|
struct scsi_mode_data *data);
|
|
|
|
|
|
#endif /* _SCSI_SCSI_REQUEST_H */
|