[SCSI] sd: Detach DIF from block integrity infrastructure

So far we have only issued DIF commands if CONFIG_BLK_DEV_INTEGRITY is
enabled.  However, communication between initiator and target should be
independent of protection information DMA.  There are DIF-only host
adapters coming out that will be able to take advantage of this.

Move the relevant DIF bits to sd.c.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 0 insertions, 53 deletions

diff --git a/drivers/scsi/sd_dif.c b/drivers/scsi/sd_dif.c
index 84224dd21acf..88da97745710 100644
--- a/drivers/scsi/sd_dif.c
+++ b/drivers/scsi/sd_dif.c
@@ -320,15 +320,6 @@ void sd_dif_config_host(struct scsi_disk *sdkp)
                 dif = 0; dix = 1;
         }
 
-        if (type) {
-                if (dif)
-                        sd_printk(KERN_NOTICE, sdkp,
-                                  "Enabling DIF Type %d protection\n", type);
-                else
-                        sd_printk(KERN_NOTICE, sdkp,
-                                  "Disabling DIF Type %d protection\n", type);
-        }
-
         if (!dix)
                 return;
 
@@ -360,50 +351,6 @@ void sd_dif_config_host(struct scsi_disk *sdkp)
 }
 
 /*
- * DIF DMA operation magic decoder ring.
- */
-void sd_dif_op(struct scsi_cmnd *scmd, unsigned int dif, unsigned int dix, unsigned int type)
-{
-        int prot_op;
-
-        prot_op = SCSI_PROT_NORMAL;
-
-        BUG_ON(dif && (scmd->cmnd[0] == READ_6 || scmd->cmnd[0] == WRITE_6));
-
-        switch (scmd->cmnd[0]) {
-        case READ_6:
-        case READ_10:
-        case READ_12:
-        case READ_16:
-                if (dif && dix)
-                        prot_op = SCSI_PROT_READ_PASS;
-                else if (dif && !dix)
-                        prot_op = SCSI_PROT_READ_STRIP;
-                else if (!dif && dix)
-                        prot_op = SCSI_PROT_READ_INSERT;
-
-                break;
-
-        case WRITE_6:
-        case WRITE_10:
-        case WRITE_12:
-        case WRITE_16:
-                if (dif && dix)
-                        prot_op = SCSI_PROT_WRITE_PASS;
-                else if (dif && !dix)
-                        prot_op = SCSI_PROT_WRITE_INSERT;
-                else if (!dif && dix)
-                        prot_op = SCSI_PROT_WRITE_STRIP;
-
-                break;
-        }
-
-        scsi_set_prot_op(scmd, prot_op);
-        if (dif)
-                scsi_set_prot_type(scmd, type);
-}
-
-/*
  * The virtual start sector is the one that was originally submitted
  * by the block layer.  Due to partitioning, MD/DM cloning, etc. the
  * actual physical start sector is likely to be different.  Remap