scsi: lpfc: Refactor WQE structure definitions for common use

In preparation of reworking the driver to use a native SLI-4 WQE interface
for the SCSI and NVMe I/O paths, start by commonizing the WQE exchange type
and command type attributes.

While adjusting these options also noted the variance in the pbde field.
Fix this by setting templates to 0 and in NVMe, which explicitly uses this
option, setting the value.

Link: https://lore.kernel.org/r/20201115192646.12977-11-james.smart@broadcom.comCo-developed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_hw4.h

@@ -4386,9 +4386,11 @@ struct wqe_common {
 #define wqe_ebde_cnt_SHIFT    0
 #define wqe_ebde_cnt_MASK     0x0000000f
 #define wqe_ebde_cnt_WORD     word10
-#define wqe_nvme_SHIFT        4
-#define wqe_nvme_MASK         0x00000001
-#define wqe_nvme_WORD         word10
+#define wqe_xchg_SHIFT        4
+#define wqe_xchg_MASK         0x00000001
+#define wqe_xchg_WORD         word10
+#define LPFC_SCSI_XCHG	      0x0
+#define LPFC_NVME_XCHG	      0x1
 #define wqe_oas_SHIFT         6
 #define wqe_oas_MASK          0x00000001
 #define wqe_oas_WORD          word10
@@ -4886,6 +4888,8 @@ struct lpfc_grp_hdr {
 #define NVME_READ_CMD		0x0
 #define FCP_COMMAND_DATA_OUT	0x1
 #define NVME_WRITE_CMD		0x1
+#define COMMAND_DATA_IN		0x0
+#define COMMAND_DATA_OUT	0x1
 #define FCP_COMMAND_TRECEIVE	0x2
 #define FCP_COMMAND_TRSP	0x3
 #define FCP_COMMAND_TSEND	0x7

drivers/scsi/lpfc/lpfc_nvme.c

@@ -98,16 +98,16 @@ lpfc_nvme_cmd_template(void)
 
 	/* Word 10 - dbde, wqes is variable */
 	bf_set(wqe_qosd, &wqe->fcp_iread.wqe_com, 0);
-	bf_set(wqe_nvme, &wqe->fcp_iread.wqe_com, 1);
+	bf_set(wqe_xchg, &wqe->fcp_iread.wqe_com, LPFC_NVME_XCHG);
 	bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, LPFC_WQE_IOD_READ);
 	bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com, LPFC_WQE_LENLOC_WORD4);
 	bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 0);
 	bf_set(wqe_wqes, &wqe->fcp_iread.wqe_com, 1);
 
 	/* Word 11 - pbde is variable */
-	bf_set(wqe_cmd_type, &wqe->fcp_iread.wqe_com, NVME_READ_CMD);
+	bf_set(wqe_cmd_type, &wqe->fcp_iread.wqe_com, COMMAND_DATA_IN);
 	bf_set(wqe_cqid, &wqe->fcp_iread.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
-	bf_set(wqe_pbde, &wqe->fcp_iread.wqe_com, 1);
+	bf_set(wqe_pbde, &wqe->fcp_iread.wqe_com, 0);
 
 	/* Word 12 - is zero */
 
@@ -139,16 +139,16 @@ lpfc_nvme_cmd_template(void)
 
 	/* Word 10 - dbde, wqes is variable */
 	bf_set(wqe_qosd, &wqe->fcp_iwrite.wqe_com, 0);
-	bf_set(wqe_nvme, &wqe->fcp_iwrite.wqe_com, 1);
+	bf_set(wqe_xchg, &wqe->fcp_iwrite.wqe_com, LPFC_NVME_XCHG);
 	bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_IOD_WRITE);
 	bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_LENLOC_WORD4);
 	bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0);
 	bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1);
 
 	/* Word 11 - pbde is variable */
-	bf_set(wqe_cmd_type, &wqe->fcp_iwrite.wqe_com, NVME_WRITE_CMD);
+	bf_set(wqe_cmd_type, &wqe->fcp_iwrite.wqe_com, COMMAND_DATA_OUT);
 	bf_set(wqe_cqid, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
-	bf_set(wqe_pbde, &wqe->fcp_iwrite.wqe_com, 1);
+	bf_set(wqe_pbde, &wqe->fcp_iwrite.wqe_com, 0);
 
 	/* Word 12 - is zero */
 
@@ -178,14 +178,14 @@ lpfc_nvme_cmd_template(void)
 
 	/* Word 10 - dbde, wqes is variable */
 	bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1);
-	bf_set(wqe_nvme, &wqe->fcp_icmd.wqe_com, 1);
+	bf_set(wqe_xchg, &wqe->fcp_icmd.wqe_com, LPFC_NVME_XCHG);
 	bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_NONE);
 	bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com, LPFC_WQE_LENLOC_NONE);
 	bf_set(wqe_dbde, &wqe->fcp_icmd.wqe_com, 0);
 	bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1);
 
 	/* Word 11 */
-	bf_set(wqe_cmd_type, &wqe->fcp_icmd.wqe_com, FCP_COMMAND);
+	bf_set(wqe_cmd_type, &wqe->fcp_icmd.wqe_com, COMMAND_DATA_IN);
 	bf_set(wqe_cqid, &wqe->fcp_icmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
 	bf_set(wqe_pbde, &wqe->fcp_icmd.wqe_com, 0);
 
@@ -1567,7 +1567,9 @@ lpfc_nvme_prep_io_dma(struct lpfc_vport *vport,
 				le32_to_cpu(first_data_sgl->sge_len);
 			bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
 			bde->tus.w = cpu_to_le32(bde->tus.w);
-			/* wqe_pbde is 1 in template */
+
+			/* Word 11 */
+			bf_set(wqe_pbde, &wqe->generic.wqe_com, 1);
 		} else {
 			memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3));
 			bf_set(wqe_pbde, &wqe->generic.wqe_com, 0);

drivers/scsi/lpfc/lpfc_nvmet.c

@@ -105,7 +105,7 @@ lpfc_nvmet_cmd_template(void)
 	/* Word 9  - reqtag, rcvoxid is variable */
 
 	/* Word 10 - wqes, xc is variable */
-	bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
+	bf_set(wqe_xchg, &wqe->fcp_tsend.wqe_com, LPFC_NVME_XCHG);
 	bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1);
 	bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
 	bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1);
@@ -153,7 +153,7 @@ lpfc_nvmet_cmd_template(void)
 	/* Word 10 - xc is variable */
 	bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1);
 	bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0);
-	bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1);
+	bf_set(wqe_xchg, &wqe->fcp_treceive.wqe_com, LPFC_NVME_XCHG);
 	bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ);
 	bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com, LPFC_WQE_LENLOC_WORD12);
 	bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1);
@@ -195,7 +195,7 @@ lpfc_nvmet_cmd_template(void)
 
 	/* Word 10 wqes, xc is variable */
 	bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 1);
-	bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1);
+	bf_set(wqe_xchg, &wqe->fcp_trsp.wqe_com, LPFC_NVME_XCHG);
 	bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0);
 	bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 0);
 	bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_NONE);