Commit 8303b46e authored by Borislav Petkov's avatar Borislav Petkov Committed by Bartlomiej Zolnierkiewicz

ide: add generic packet command representation ide_atapi_pc

This new struct unifies ide{-floppy,-tape,-scsi}'s view of a packet command. For now,
it represents the common denominator between the three drivers while adding driver-
specific members at the end of the struct which will be merged/simplified into the
generic ATAPI handling code in later steps, or removed completely.

Bart:
- move struct ide_atapi_pc outside of #ifdef/#endif CONFIG_IDE_PROC_FS
Signed-off-by: default avatarBorislav Petkov <petkovbb@gmail.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent 346331f8
......@@ -595,6 +595,53 @@ int set_io_32bit(ide_drive_t *, int);
int set_pio_mode(ide_drive_t *, int);
int set_using_dma(ide_drive_t *, int);
struct ide_atapi_pc {
/* actual packet bytes */
u8 c[12];
/* incremented on each retry */
int retries;
int error;
/* bytes to transfer */
int req_xfer;
/* bytes actually transferred */
int xferred;
/* data buffer */
u8 *buf;
/* current buffer position */
u8 *cur_pos;
int buf_size;
/* missing/available data on the current buffer */
int b_count;
/* the corresponding request */
struct request *rq;
unsigned long flags;
/*
* those are more or less driver-specific and some of them are subject
* to change/removal later.
*/
u8 pc_buf[256];
void (*idefloppy_callback) (ide_drive_t *);
ide_startstop_t (*idetape_callback) (ide_drive_t *);
/* idetape only */
struct idetape_bh *bh;
char *b_data;
/* idescsi only for now */
struct scatterlist *sg;
unsigned int sg_cnt;
struct scsi_cmnd *scsi_cmd;
void (*done) (struct scsi_cmnd *);
unsigned long timeout;
};
#ifdef CONFIG_IDE_PROC_FS
/*
* configurable drive settings
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment