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From:   Jiangfeng Xiao <xiaojiangfeng@huawei.com>
To:     <yisen.zhuang@huawei.com>, <salil.mehta@huawei.com>,
        <dingtianhong@huawei.com>, <xiaojiangfeng@huawei.com>
CC:     <davem@davemloft.net>, <robh+dt@kernel.org>,
        <mark.rutland@arm.com>, <netdev@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <leeyou.li@huawei.com>, <xiekunxun@huawei.com>,
        <jianping.liu@huawei.com>, <nixiaoming@huawei.com>
Subject: [PATCH] net: hisilicon: Add an tx_desc to adapt HI13X1_GMAC
Date:   Fri, 5 Jul 2019 14:10:03 +0800
Message-ID: <1562307003-103516-1-git-send-email-xiaojiangfeng@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

HI13X1 changed the offsets and bitmaps for tx_desc
registers in the same peripheral device on different
models of the hip04_eth.

Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
---
 drivers/net/ethernet/hisilicon/hip04_eth.c | 34 +++++++++++++++++++++++++++---
 1 file changed, 31 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hip04_eth.c b/drivers/net/ethernet/hisilicon/hip04_eth.c
index 780fc46..6256357 100644
--- a/drivers/net/ethernet/hisilicon/hip04_eth.c
+++ b/drivers/net/ethernet/hisilicon/hip04_eth.c
@@ -76,8 +76,15 @@
 /* TX descriptor config */
 #define TX_FREE_MEM			BIT(0)
 #define TX_READ_ALLOC_L3		BIT(1)
-#define TX_FINISH_CACHE_INV		BIT(2)
+#if defined(CONFIG_HI13X1_GMAC)
+#define TX_CLEAR_WB			BIT(7)
+#define TX_RELEASE_TO_PPE		BIT(4)
+#define TX_FINISH_CACHE_INV		BIT(6)
+#define TX_POOL_SHIFT			16
+#else
 #define TX_CLEAR_WB			BIT(4)
+#define TX_FINISH_CACHE_INV		BIT(2)
+#endif
 #define TX_L3_CHECKSUM			BIT(5)
 #define TX_LOOP_BACK			BIT(11)
 
@@ -124,6 +131,7 @@
 /* buf unit size is cache_line_size, which is 64, so the shift is 6 */
 #define PPE_BUF_SIZE_SHIFT		6
 #define PPE_TX_BUF_HOLD			BIT(31)
+#define CACHE_LINE_MASK			0x3F
 #else
 #define PPE_CFG_QOS_VMID_GRP_SHIFT	8
 #define PPE_CFG_RX_CTRL_ALIGN_SHIFT	11
@@ -163,11 +171,22 @@
 #define HIP04_MIN_TX_COALESCE_FRAMES	100
 
 struct tx_desc {
+#if defined(CONFIG_HI13X1_GMAC)
+	u32 reserved1[2];
+	u32 send_addr;
+	u16 send_size;
+	u16 data_offset;
+	u32 reserved2[7];
+	u32 cfg;
+	u32 wb_addr;
+	u32 reserved3[3];
+#else
 	u32 send_addr;
 	u32 send_size;
 	u32 next_addr;
 	u32 cfg;
 	u32 wb_addr;
+#endif
 } __aligned(64);
 
 struct rx_desc {
@@ -505,11 +524,20 @@ static void hip04_start_tx_timer(struct hip04_priv *priv)
 
 	priv->tx_skb[tx_head] = skb;
 	priv->tx_phys[tx_head] = phys;
-	desc->send_addr = (__force u32)cpu_to_be32(phys);
+
 	desc->send_size = (__force u32)cpu_to_be32(skb->len);
+#if defined(CONFIG_HI13X1_GMAC)
+	desc->cfg = (__force u32)cpu_to_be32(TX_CLEAR_WB | TX_FINISH_CACHE_INV
+		| TX_RELEASE_TO_PPE | priv->port << TX_POOL_SHIFT);
+	desc->data_offset = (__force u32)cpu_to_be32(phys & CACHE_LINE_MASK);
+	desc->send_addr =  (__force u32)cpu_to_be32(phys & ~CACHE_LINE_MASK);
+#else
 	desc->cfg = (__force u32)cpu_to_be32(TX_CLEAR_WB | TX_FINISH_CACHE_INV);
+	desc->send_addr = (__force u32)cpu_to_be32(phys);
+#endif
 	phys = priv->tx_desc_dma + tx_head * sizeof(struct tx_desc);
-	desc->wb_addr = (__force u32)cpu_to_be32(phys);
+	desc->wb_addr = (__force u32)cpu_to_be32(phys +
+		offsetof(struct tx_desc, send_addr));
 	skb_tx_timestamp(skb);
 
 	hip04_set_xmit_desc(priv, phys);
-- 
1.8.5.6