[SCSI] be2iscsi: Fix doorbell format for EQ/CQ/RQ s per SLI spec.

The doorbel format has been updated to support additonal functionalities
of SKH-R adapter. These changes are made such that older FW also works fine.

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

drivers/scsi/be2iscsi/be_cmds.c

@@ -432,18 +432,6 @@ void beiscsi_async_link_state_process(struct beiscsi_hba *phba,
 	}
 }
 
-static void beiscsi_cq_notify(struct beiscsi_hba *phba, u16 qid, bool arm,
-		       u16 num_popped)
-{
-	u32 val = 0;
-	val |= qid & DB_CQ_RING_ID_MASK;
-	if (arm)
-		val |= 1 << DB_CQ_REARM_SHIFT;
-	val |= num_popped << DB_CQ_NUM_POPPED_SHIFT;
-	iowrite32(val, phba->db_va + DB_CQ_OFFSET);
-}
-
-
 int beiscsi_process_mcc(struct beiscsi_hba *phba)
 {
 	struct be_mcc_compl *compl;
@@ -474,7 +462,7 @@ int beiscsi_process_mcc(struct beiscsi_hba *phba)
 	}
 
 	if (num)
-		beiscsi_cq_notify(phba, phba->ctrl.mcc_obj.cq.id, true, num);
+		hwi_ring_cq_db(phba, phba->ctrl.mcc_obj.cq.id, num, 1, 0);
 
 	spin_unlock_bh(&phba->ctrl.mcc_cq_lock);
 	return status;

drivers/scsi/be2iscsi/be_cmds.h

@@ -103,7 +103,7 @@ struct be_mcc_compl {
 
 /********** MCC door bell ************/
 #define DB_MCCQ_OFFSET 0x140
-#define DB_MCCQ_RING_ID_MASK 0x7FF		/* bits 0 - 10 */
+#define DB_MCCQ_RING_ID_MASK 0xFFFF		/* bits 0 - 15 */
 /* Number of entries posted */
 #define DB_MCCQ_NUM_POSTED_SHIFT 16		/* bits 16 - 29 */
 
@@ -1018,8 +1018,8 @@ struct be_mcc_wrb_context {
 	int *users_final_status;
 } __packed;
 
-#define DB_DEF_PDU_RING_ID_MASK		0x3FF	/* bits 0 - 9 */
+#define DB_DEF_PDU_RING_ID_MASK	0x3FFF	/* bits 0 - 13 */
-#define DB_DEF_PDU_CQPROC_MASK		0x3FFF	/* bits 0 - 9 */
+#define DB_DEF_PDU_CQPROC_MASK		0x3FFF	/* bits 16 - 29 */
 #define DB_DEF_PDU_REARM_SHIFT		14
 #define DB_DEF_PDU_EVENT_SHIFT		15
 #define DB_DEF_PDU_CQPROC_SHIFT		16

drivers/scsi/be2iscsi/be_main.c

@@ -809,14 +809,23 @@ static void hwi_ring_eq_db(struct beiscsi_hba *phba,
 			   unsigned char rearm, unsigned char event)
 {
 	u32 val = 0;
-	val |= id & DB_EQ_RING_ID_MASK;
+
 	if (rearm)
 		val |= 1 << DB_EQ_REARM_SHIFT;
 	if (clr_interrupt)
 		val |= 1 << DB_EQ_CLR_SHIFT;
 	if (event)
 		val |= 1 << DB_EQ_EVNT_SHIFT;
+
 	val |= num_processed << DB_EQ_NUM_POPPED_SHIFT;
+	/* Setting lower order EQ_ID Bits */
+	val |= (id & DB_EQ_RING_ID_LOW_MASK);
+
+	/* Setting Higher order EQ_ID Bits */
+	val |= (((id >> DB_EQ_HIGH_FEILD_SHIFT) &
+		  DB_EQ_RING_ID_HIGH_MASK)
+		  << DB_EQ_HIGH_SET_SHIFT);
+
 	iowrite32(val, phba->db_va + DB_EQ_OFFSET);
 }
 
@@ -1098,15 +1107,25 @@ static int beiscsi_init_irqs(struct beiscsi_hba *phba)
 	return ret;
 }
 
-static void hwi_ring_cq_db(struct beiscsi_hba *phba,
+void hwi_ring_cq_db(struct beiscsi_hba *phba,
 			   unsigned int id, unsigned int num_processed,
 			   unsigned char rearm, unsigned char event)
 {
 	u32 val = 0;
-	val |= id & DB_CQ_RING_ID_MASK;
+
 	if (rearm)
 		val |= 1 << DB_CQ_REARM_SHIFT;
+
 	val |= num_processed << DB_CQ_NUM_POPPED_SHIFT;
+
+	/* Setting lower order CQ_ID Bits */
+	val |= (id & DB_CQ_RING_ID_LOW_MASK);
+
+	/* Setting Higher order CQ_ID Bits */
+	val |= (((id >> DB_CQ_HIGH_FEILD_SHIFT) &
+		  DB_CQ_RING_ID_HIGH_MASK)
+		  << DB_CQ_HIGH_SET_SHIFT);
+
 	iowrite32(val, phba->db_va + DB_CQ_OFFSET);
 }
 

drivers/scsi/be2iscsi/be_main.h

@@ -135,11 +135,15 @@
 #define DB_RXULP0_OFFSET 0xA0
 /********* Event Q door bell *************/
 #define DB_EQ_OFFSET			DB_CQ_OFFSET
-#define DB_EQ_RING_ID_MASK		0x1FF	/* bits 0 - 8 */
+#define DB_EQ_RING_ID_LOW_MASK		0x1FF	/* bits 0 - 8 */
 /* Clear the interrupt for this eq */
 #define DB_EQ_CLR_SHIFT			(9)	/* bit 9 */
 /* Must be 1 */
 #define DB_EQ_EVNT_SHIFT		(10)	/* bit 10 */
+/* Higher Order EQ_ID bit */
+#define DB_EQ_RING_ID_HIGH_MASK	0x1F /* bits 11 - 15 */
+#define DB_EQ_HIGH_SET_SHIFT	11
+#define DB_EQ_HIGH_FEILD_SHIFT	9
 /* Number of event entries processed */
 #define DB_EQ_NUM_POPPED_SHIFT		(16)	/* bits 16 - 28 */
 /* Rearm bit */
@@ -147,7 +151,12 @@
 
 /********* Compl Q door bell *************/
 #define DB_CQ_OFFSET			0x120
-#define DB_CQ_RING_ID_MASK		0x3FF	/* bits 0 - 9 */
+#define DB_CQ_RING_ID_LOW_MASK		0x3FF	/* bits 0 - 9 */
+/* Higher Order CQ_ID bit */
+#define DB_CQ_RING_ID_HIGH_MASK	0x1F /* bits 11 - 15 */
+#define DB_CQ_HIGH_SET_SHIFT	11
+#define DB_CQ_HIGH_FEILD_SHIFT	10
+
 /* Number of event entries processed */
 #define DB_CQ_NUM_POPPED_SHIFT		(16)	/* bits 16 - 28 */
 /* Rearm bit */
@@ -821,6 +830,9 @@ void beiscsi_process_all_cqs(struct work_struct *work);
 void beiscsi_free_mgmt_task_handles(struct beiscsi_conn *beiscsi_conn,
 				     struct iscsi_task *task);
 
+void hwi_ring_cq_db(struct beiscsi_hba *phba,
+		     unsigned int id, unsigned int num_processed,
+		     unsigned char rearm, unsigned char event);
 static inline bool beiscsi_error(struct beiscsi_hba *phba)
 {
 	return phba->ue_detected || phba->fw_timeout;