#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 */