RDMA/hns: Rename CMDQ head/tail pointer to PI/CI

The same name represents opposite meanings in new/old driver, it is hard
to maintain, so rename them to PI/CI.

Link: https://lore.kernel.org/r/1621482876-35780-2-git-send-email-liweihang@huawei.comSigned-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/hns/hns_roce_common.h

@@ -373,8 +373,8 @@
 #define ROCEE_TX_CMQ_BASEADDR_L_REG		0x07000
 #define ROCEE_TX_CMQ_BASEADDR_H_REG		0x07004
 #define ROCEE_TX_CMQ_DEPTH_REG			0x07008
-#define ROCEE_TX_CMQ_HEAD_REG			0x07010
-#define ROCEE_TX_CMQ_TAIL_REG			0x07014
+#define ROCEE_TX_CMQ_PI_REG			0x07010
+#define ROCEE_TX_CMQ_CI_REG			0x07014
 
 #define ROCEE_RX_CMQ_BASEADDR_L_REG		0x07018
 #define ROCEE_RX_CMQ_BASEADDR_H_REG		0x0701c

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

@@ -1255,8 +1255,8 @@ static void hns_roce_cmq_init_regs(struct hns_roce_dev *hr_dev, bool ring_type)
 			   (u32)ring->desc_num >> HNS_ROCE_CMQ_DESC_NUM_S);
 
 		/* Make sure to write tail first and then head */
-		roce_write(hr_dev, ROCEE_TX_CMQ_TAIL_REG, 0);
-		roce_write(hr_dev, ROCEE_TX_CMQ_HEAD_REG, 0);
+		roce_write(hr_dev, ROCEE_TX_CMQ_CI_REG, 0);
+		roce_write(hr_dev, ROCEE_TX_CMQ_PI_REG, 0);
 	} else {
 		roce_write(hr_dev, ROCEE_RX_CMQ_BASEADDR_L_REG, (u32)dma);
 		roce_write(hr_dev, ROCEE_RX_CMQ_BASEADDR_H_REG,
@@ -1338,7 +1338,7 @@ static void hns_roce_cmq_setup_basic_desc(struct hns_roce_cmq_desc *desc,
 
 static int hns_roce_cmq_csq_done(struct hns_roce_dev *hr_dev)
 {
-	u32 tail = roce_read(hr_dev, ROCEE_TX_CMQ_TAIL_REG);
+	u32 tail = roce_read(hr_dev, ROCEE_TX_CMQ_CI_REG);
 	struct hns_roce_v2_priv *priv = hr_dev->priv;
 
 	return tail == priv->cmq.csq.head;
@@ -1366,7 +1366,7 @@ static int __hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
 	}
 
 	/* Write to hardware */
-	roce_write(hr_dev, ROCEE_TX_CMQ_HEAD_REG, csq->head);
+	roce_write(hr_dev, ROCEE_TX_CMQ_PI_REG, csq->head);
 
 	/* If the command is sync, wait for the firmware to write back,
 	 * if multi descriptors to be sent, use the first one to check
@@ -1397,7 +1397,7 @@ static int __hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
 		}
 	} else {
 		/* FW/HW reset or incorrect number of desc */
-		tail = roce_read(hr_dev, ROCEE_TX_CMQ_TAIL_REG);
+		tail = roce_read(hr_dev, ROCEE_TX_CMQ_CI_REG);
 		dev_warn(hr_dev->dev, "CMDQ move tail from %d to %d\n",
 			 csq->head, tail);
 		csq->head = tail;