Commit d974e426 authored by Martin K. Petersen's avatar Martin K. Petersen Committed by James Bottomley

[SCSI] Disable DIF on Hitachi Ultrastar 15K300

Hitachi Ultrastar 15K300 is quirky. Disable T10 PI (DIF).
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: default avatarJames Bottomley <JBottomley@Parallels.com>
parent 8172499a
......@@ -172,6 +172,7 @@ static struct {
{"HITACHI", "DF400", "*", BLIST_REPORTLUN2},
{"HITACHI", "DF500", "*", BLIST_REPORTLUN2},
{"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},
{"HITACHI", "HUS1530", "*", BLIST_NO_DIF},
{"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2},
{"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
{"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
......
......@@ -911,6 +911,9 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
if (*bflags & BLIST_RETRY_HWERROR)
sdev->retry_hwerror = 1;
if (*bflags & BLIST_NO_DIF)
sdev->no_dif = 1;
transport_configure_device(&sdev->sdev_gendev);
if (sdev->host->hostt->slave_configure) {
......
......@@ -156,6 +156,7 @@ struct scsi_device {
unsigned is_visible:1; /* is the device visible in sysfs */
unsigned can_power_off:1; /* Device supports runtime power off */
unsigned wce_default_on:1; /* Cache is ON by default */
unsigned no_dif:1; /* T10 PI (DIF) should be disabled */
DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */
struct list_head event_list; /* asserted events */
......@@ -476,6 +477,9 @@ static inline int scsi_device_enclosure(struct scsi_device *sdev)
static inline int scsi_device_protection(struct scsi_device *sdev)
{
if (sdev->no_dif)
return 0;
return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0);
}
......
......@@ -30,4 +30,5 @@
#define BLIST_RETRY_HWERROR 0x400000 /* retry HARDWARE_ERROR */
#define BLIST_MAX_512 0x800000 /* maximum 512 sector cdb length */
#define BLIST_ATTACH_PQ3 0x1000000 /* Scan: Attach to PQ3 devices */
#define BLIST_NO_DIF 0x2000000 /* Disable T10 PI (DIF) */
#endif
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