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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2012-08-28 14:29:37 -0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-09-24 12:11:00 +0400 |
| commit | 5e95e731115c391d36868cd36f499a8ce16c7959 (patch) | |
| tree | 3cb6e78ecb0c1ba2c14d8038fdc7cfc1ccce4a3b /drivers/scsi/mpt2sas | |
| parent | 9b5cd13249af3eb023ee7ba9ff63c16c25488d03 (diff) | |
| download | linux-5e95e731115c391d36868cd36f499a8ce16c7959.tar.gz linux-5e95e731115c391d36868cd36f499a8ce16c7959.tar.bz2 linux-5e95e731115c391d36868cd36f499a8ce16c7959.zip | |
[SCSI] mpt2sas: Add a module parameter that permits overriding protection capabilities
Add a parameter that allows the host protection capabilities mask to be
provided at module load time.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: "Sreekanth Reddy" <Sreekanth.reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/mpt2sas')
| -rw-r--r-- | drivers/scsi/mpt2sas/mpt2sas_scsih.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index bfda0ecd960d..96f4d1f1cf5e 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -123,6 +123,11 @@ static int disable_discovery = -1; module_param(disable_discovery, int, 0); MODULE_PARM_DESC(disable_discovery, " disable discovery "); +/* permit overriding the host protection capabilities mask (EEDP/T10 PI) */ +static int prot_mask = 0; +module_param(prot_mask, int, 0); +MODULE_PARM_DESC(prot_mask, " host protection capabilities mask, def=7 "); + /** * struct sense_info - common structure for obtaining sense keys * @skey: sense key @@ -8088,8 +8093,14 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto out_add_shost_fail; } - scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION - | SHOST_DIF_TYPE2_PROTECTION | SHOST_DIF_TYPE3_PROTECTION); + /* register EEDP capabilities with SCSI layer */ + if (prot_mask) + scsi_host_set_prot(shost, prot_mask); + else + scsi_host_set_prot(shost, SHOST_DIF_TYPE1_PROTECTION + | SHOST_DIF_TYPE2_PROTECTION + | SHOST_DIF_TYPE3_PROTECTION); + scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); /* event thread */ |