[SCSI] lpfc 8.3.36: Update DIF support for passthru/strip/insert

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

4 files changed, 29 insertions, 10 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hw4.h b/drivers/scsi/lpfc/lpfc_hw4.h
index 2cdeb5434fb7..a47cfbdd05f2 100644
--- a/drivers/scsi/lpfc/lpfc_hw4.h
+++ b/drivers/scsi/lpfc/lpfc_hw4.h
@@ -3219,6 +3219,9 @@ struct wqe_common {
 #define wqe_dif_SHIFT         0
 #define wqe_dif_MASK          0x00000003
 #define wqe_dif_WORD          word7
+#define LPFC_WQE_DIF_PASSTHRU   1
+#define LPFC_WQE_DIF_STRIP      2
+#define LPFC_WQE_DIF_INSERT     3
 #define wqe_ct_SHIFT          2
 #define wqe_ct_MASK           0x00000003
 #define wqe_ct_WORD           word7
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index fd2ff5a9e18c..60e5a177644c 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -3227,6 +3227,21 @@ lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
                 }
         }
 
+        switch (scsi_get_prot_op(scsi_cmnd)) {
+        case SCSI_PROT_WRITE_STRIP:
+        case SCSI_PROT_READ_STRIP:
+                lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP;
+                break;
+        case SCSI_PROT_WRITE_INSERT:
+        case SCSI_PROT_READ_INSERT:
+                lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT;
+                break;
+        case SCSI_PROT_WRITE_PASS:
+        case SCSI_PROT_READ_PASS:
+                lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS;
+                break;
+        }
+
         fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd);
 
         fcp_cmnd->fcpDl = be32_to_cpu(fcpdl);
@@ -3236,7 +3251,6 @@ lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba,
          * we need to set word 4 of IOCB here
          */
         iocb_cmd->un.fcpi.fcpi_parm = fcpdl;
-        lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF;
 
         return 0;
 err:
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index d7f3313ef886..624eab370396 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -8068,10 +8068,6 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
                        LPFC_WQE_LENLOC_WORD4);
                 bf_set(wqe_ebde_cnt, &wqe->fcp_iwrite.wqe_com, 0);
                 bf_set(wqe_pu, &wqe->fcp_iwrite.wqe_com, iocbq->iocb.ulpPU);
-                if (iocbq->iocb_flag & LPFC_IO_DIF) {
-                        iocbq->iocb_flag &= ~LPFC_IO_DIF;
-                        bf_set(wqe_dif, &wqe->generic.wqe_com, 1);
-                }
                 bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 1);
                 break;
         case CMD_FCP_IREAD64_CR:
@@ -8091,10 +8087,6 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
                        LPFC_WQE_LENLOC_WORD4);
                 bf_set(wqe_ebde_cnt, &wqe->fcp_iread.wqe_com, 0);
                 bf_set(wqe_pu, &wqe->fcp_iread.wqe_com, iocbq->iocb.ulpPU);
-                if (iocbq->iocb_flag & LPFC_IO_DIF) {
-                        iocbq->iocb_flag &= ~LPFC_IO_DIF;
-                        bf_set(wqe_dif, &wqe->generic.wqe_com, 1);
-                }
                 bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 1);
                 break;
         case CMD_FCP_ICMND64_CR:
@@ -8304,6 +8296,14 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
                 break;
         }
 
+        if (iocbq->iocb_flag & LPFC_IO_DIF_PASS)
+                bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_PASSTHRU);
+        else if (iocbq->iocb_flag & LPFC_IO_DIF_STRIP)
+                bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_STRIP);
+        else if (iocbq->iocb_flag & LPFC_IO_DIF_INSERT)
+                bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_INSERT);
+        iocbq->iocb_flag &= ~(LPFC_IO_DIF_PASS | LPFC_IO_DIF_STRIP |
+                              LPFC_IO_DIF_INSERT);
         bf_set(wqe_xri_tag, &wqe->generic.wqe_com, xritag);
         bf_set(wqe_reqtag, &wqe->generic.wqe_com, iocbq->iotag);
         wqe->generic.wqe_com.abort_tag = abort_tag;
diff --git a/drivers/scsi/lpfc/lpfc_sli.h b/drivers/scsi/lpfc/lpfc_sli.h
index 2f48d000a3b4..9d2e0c6fe334 100644
--- a/drivers/scsi/lpfc/lpfc_sli.h
+++ b/drivers/scsi/lpfc/lpfc_sli.h
@@ -69,7 +69,9 @@ struct lpfc_iocbq {
 #define LPFC_USE_FCPWQIDX       0x80    /* Submit to specified FCPWQ index */
 #define DSS_SECURITY_OP         0x100   /* security IO */
 #define LPFC_IO_ON_TXCMPLQ      0x200   /* The IO is still on the TXCMPLQ */
-#define LPFC_IO_DIF             0x400   /* T10 DIF IO */
+#define LPFC_IO_DIF_PASS        0x400   /* T10 DIF IO pass-thru prot */
+#define LPFC_IO_DIF_STRIP       0x800   /* T10 DIF IO strip prot */
+#define LPFC_IO_DIF_INSERT      0x1000  /* T10 DIF IO insert prot */
 
 #define LPFC_FIP_ELS_ID_MASK    0xc000  /* ELS_ID range 0-3, non-shifted mask */
 #define LPFC_FIP_ELS_ID_SHIFT   14