diff options
| -rw-r--r-- | sys/cam/scsi/scsi_cd.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/cam/scsi/scsi_cd.c b/sys/cam/scsi/scsi_cd.c index 383d703..8eb3537 100644 --- a/sys/cam/scsi/scsi_cd.c +++ b/sys/cam/scsi/scsi_cd.c @@ -292,6 +292,9 @@ static struct periph_driver cddriver = PERIPHDRIVER_DECLARE(cd, cddriver); +#ifndef CD_DEFAULT_RETRY +#define CD_DEFAULT_RETRY 4 +#endif #ifndef CHANGER_MIN_BUSY_SECONDS #define CHANGER_MIN_BUSY_SECONDS 5 #endif @@ -299,11 +302,15 @@ PERIPHDRIVER_DECLARE(cd, cddriver); #define CHANGER_MAX_BUSY_SECONDS 15 #endif +static int cd_retry_count = CD_DEFAULT_RETRY; static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS; static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS; SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver"); SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer"); +SYSCTL_INT(_kern_cam_cd, OID_AUTO, retry_count, CTLFLAG_RW, + &cd_retry_count, 0, "Normal I/O retry count"); +TUNABLE_INT("kern.cam.cd.retry_count", &cd_retry_count); SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW, &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum"); TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds); @@ -1454,7 +1461,7 @@ cdstart(struct cam_periph *periph, union ccb *start_ccb) devstat_start_transaction_bio(softc->disk->d_devstat, bp); scsi_read_write(&start_ccb->csio, - /*retries*/4, + /*retries*/cd_retry_count, /* cbfcnp */ cddone, MSG_SIMPLE_Q_TAG, /* read */bp->bio_cmd == BIO_READ, |
