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| author | James Bottomley <James.Bottomley@steeleye.com> | 2006-03-31 20:07:45 -0600 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-04-13 10:13:31 -0500 |
| commit | 4d7db04a7a69099accd84984a78c64d2178252f1 (patch) | |
| tree | 4b447d05c77290bffe88339915da1186910234a3 /drivers/scsi/scsi_scan.c | |
| parent | d637c4543fdc86cbef5805c679d24bb665172a7d (diff) | |
| download | linux-4d7db04a7a69099accd84984a78c64d2178252f1.tar.gz linux-4d7db04a7a69099accd84984a78c64d2178252f1.tar.bz2 linux-4d7db04a7a69099accd84984a78c64d2178252f1.zip | |
[SCSI] add SCSI_UNKNOWN and LUN transfer limit restrictions
Original From: Ingo Flaschberger <if@xip.at>
To support the RA4100 array from Compaq.
This patch now correctly handles SCSI_UNKNOWN types with regard to
BLIST_REPORTLUNS2 (allow it) and cdb[1] LUN inclusion (don't).
It also allows a BLIST_MAX_512 flag to restrict the maximum transfer
length to 512 blocks (apparently this is an RA4100 problem).
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index f14945996ede..1a5474bd11a1 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -673,6 +673,7 @@ static int scsi_add_lun(struct scsi_device *sdev, char *inq_result, int *bflags) case TYPE_MEDIUM_CHANGER: case TYPE_ENCLOSURE: case TYPE_COMM: + case TYPE_RAID: case TYPE_RBC: sdev->writeable = 1; break; @@ -738,6 +739,13 @@ static int scsi_add_lun(struct scsi_device *sdev, char *inq_result, int *bflags) sdev->select_no_atn = 1; /* + * Maximum 512 sector transfer length + * broken RA4x00 Compaq Disk Array + */ + if (*bflags & BLIST_MAX_512) + blk_queue_max_sectors(sdev->request_queue, 512); + + /* * Some devices may not want to have a start command automatically * issued when a device is added. */ @@ -1123,10 +1131,13 @@ static int scsi_report_lun_scan(struct scsi_target *starget, int bflags, * Also allow SCSI-2 if BLIST_REPORTLUN2 is set and host adapter does * support more than 8 LUNs. */ - if ((bflags & BLIST_NOREPORTLUN) || - starget->scsi_level < SCSI_2 || - (starget->scsi_level < SCSI_3 && - (!(bflags & BLIST_REPORTLUN2) || shost->max_lun <= 8)) ) + if (bflags & BLIST_NOREPORTLUN) + return 1; + if (starget->scsi_level < SCSI_2 && + starget->scsi_level != SCSI_UNKNOWN) + return 1; + if (starget->scsi_level < SCSI_3 && + (!(bflags & BLIST_REPORTLUN2) || shost->max_lun <= 8)) return 1; if (bflags & BLIST_NOLUN) return 0; |