linux-kernel - [PATCH,v2] net: ethernet: mtk_wed: add wcid overwritten support for wed v1

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Date:   Wed, 23 Nov 2022 11:23:19 +0800
From:   Sujuan Chen <sujuan.chen@...iatek.com>
To:     <netdev@...r.kernel.org>
CC:     Felix Fietkau <nbd@....name>, <linux-kernel@...r.kernel.org>,
        Lorenzo Bianconi <lorenzo@...nel.org>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        Evelyn Tsai <evelyn.tsai@...iatek.com>,
        Bo Jiao <bo.jiao@...iatek.com>,
        linux-mediatek <linux-mediatek@...ts.infradead.org>,
        Sujuan Chen <sujuan.chen@...iatek.com>
Subject: [PATCH,v2] net: ethernet: mtk_wed: add wcid overwritten support for wed v1

All wed versions should enable the wcid overwritten feature,
since the wcid size is controlled by the wlan driver.

Tested-by: Sujuan Chen <sujuan.chen@...iatek.com>
Co-developed-by: Bo Jiao <bo.jiao@...iatek.com>
Signed-off-by: Bo Jiao <bo.jiao@...iatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen@...iatek.com>
---
v2: get rid of the unnecessary if condition
---
 drivers/net/ethernet/mediatek/mtk_wed.c      | 13 ++++++++-----
 drivers/net/ethernet/mediatek/mtk_wed_regs.h |  2 ++
 include/linux/soc/mediatek/mtk_wed.h         |  3 +++
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_wed.c b/drivers/net/ethernet/mediatek/mtk_wed.c
index 7d8842378c2b..a20093803e04 100644
--- a/drivers/net/ethernet/mediatek/mtk_wed.c
+++ b/drivers/net/ethernet/mediatek/mtk_wed.c
@@ -526,9 +526,9 @@ mtk_wed_dma_disable(struct mtk_wed_device *dev)
 			MTK_WED_WPDMA_RX_D_RX_DRV_EN);
 		wed_clr(dev, MTK_WED_WDMA_GLO_CFG,
 			MTK_WED_WDMA_GLO_CFG_TX_DDONE_CHK);
-
-		mtk_wed_set_512_support(dev, false);
 	}
+
+	mtk_wed_set_512_support(dev, false);
 }
 
 static void
@@ -1290,9 +1290,10 @@ mtk_wed_start(struct mtk_wed_device *dev, u32 irq_mask)
 		if (mtk_wed_rro_cfg(dev))
 			return;
 
-		mtk_wed_set_512_support(dev, dev->wlan.wcid_512);
 	}
 
+	mtk_wed_set_512_support(dev, dev->wlan.wcid_512);
+
 	mtk_wed_dma_enable(dev);
 	dev->running = true;
 }
@@ -1358,11 +1359,13 @@ mtk_wed_attach(struct mtk_wed_device *dev)
 	}
 
 	mtk_wed_hw_init_early(dev);
-	if (hw->version == 1)
+	if (hw->version == 1) {
 		regmap_update_bits(hw->hifsys, HIFSYS_DMA_AG_MAP,
 				   BIT(hw->index), 0);
-	else
+	} else {
+		dev->rev_id = wed_r32(dev, MTK_WED_REV_ID);
 		ret = mtk_wed_wo_init(hw);
+	}
 out:
 	if (ret)
 		mtk_wed_detach(dev);
diff --git a/drivers/net/ethernet/mediatek/mtk_wed_regs.h b/drivers/net/ethernet/mediatek/mtk_wed_regs.h
index 9e39dace95eb..873d50b9a6e6 100644
--- a/drivers/net/ethernet/mediatek/mtk_wed_regs.h
+++ b/drivers/net/ethernet/mediatek/mtk_wed_regs.h
@@ -20,6 +20,8 @@ struct mtk_wdma_desc {
 	__le32 info;
 } __packed __aligned(4);
 
+#define MTK_WED_REV_ID					0x004
+
 #define MTK_WED_RESET					0x008
 #define MTK_WED_RESET_TX_BM				BIT(0)
 #define MTK_WED_RESET_TX_FREE_AGENT			BIT(4)
diff --git a/include/linux/soc/mediatek/mtk_wed.h b/include/linux/soc/mediatek/mtk_wed.h
index 8294978f4bca..1b1ef57609f7 100644
--- a/include/linux/soc/mediatek/mtk_wed.h
+++ b/include/linux/soc/mediatek/mtk_wed.h
@@ -85,6 +85,9 @@ struct mtk_wed_device {
 	int irq;
 	u8 version;
 
+	/* used by wlan driver */
+	u32 rev_id;
+
 	struct mtk_wed_ring tx_ring[MTK_WED_TX_QUEUES];
 	struct mtk_wed_ring rx_ring[MTK_WED_RX_QUEUES];
 	struct mtk_wed_ring txfree_ring;
-- 
2.18.0