diff mbox series

[net,v2,2/2] net: ethernet: mediatek: use ADMAv1 instead of ADMAv2.0 on MT7981 and MT7986

Message ID 9a694114ffbbf5f03384b0cbf0c27b9528c94576.1715084578.git.daniel@makrotopia.org (mailing list archive)
State New, archived
Headers show
Series [net,v2,1/2] net: ethernet: mediatek: split tx and rx fields in mtk_soc_data struct | expand

Commit Message

Daniel Golle May 7, 2024, 12:25 p.m. UTC
ADMAv2.0 is plagued by RX hangs which can't easily detected and happen upon
receival of a corrupted Ethernet frame.

Use ADMAv1 instead which is also still present and usable, and doesn't
suffer from that problem.

Fixes: 197c9e9b17b1 ("net: ethernet: mtk_eth_soc: introduce support for mt7986 chipset")
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
v2: improve commit message
 drivers/net/ethernet/mediatek/mtk_eth_soc.c | 46 ++++++++++-----------
 1 file changed, 23 insertions(+), 23 deletions(-)

Comments

Przemek Kitszel May 7, 2024, 3:54 p.m. UTC | #1
On 5/7/24 14:25, Daniel Golle wrote:
> ADMAv2.0 is plagued by RX hangs which can't easily detected and happen upon

nit: missing "be" after "can't",
but no need to respin just for that

> receival of a corrupted Ethernet frame.
> 
> Use ADMAv1 instead which is also still present and usable, and doesn't
> suffer from that problem.
> 
> Fixes: 197c9e9b17b1 ("net: ethernet: mtk_eth_soc: introduce support for mt7986 chipset")
> Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> Signed-off-by: Daniel Golle <daniel@makrotopia.org>
> ---
> v2: improve commit message
>   drivers/net/ethernet/mediatek/mtk_eth_soc.c | 46 ++++++++++-----------
>   1 file changed, 23 insertions(+), 23 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> index 3eefb735ce19..d7d73295f0dc 100644
> --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
> @@ -110,16 +110,16 @@ static const struct mtk_reg_map mt7986_reg_map = {

MT7981 uses the same regmap, so is covered too, fine

>   	.tx_irq_mask		= 0x461c,
>   	.tx_irq_status		= 0x4618,
>   	.pdma = {
> -		.rx_ptr		= 0x6100,
> -		.rx_cnt_cfg	= 0x6104,
> -		.pcrx_ptr	= 0x6108,
> -		.glo_cfg	= 0x6204,
> -		.rst_idx	= 0x6208,
> -		.delay_irq	= 0x620c,
> -		.irq_status	= 0x6220,
> -		.irq_mask	= 0x6228,
> -		.adma_rx_dbg0	= 0x6238,
> -		.int_grp	= 0x6250,
> +		.rx_ptr		= 0x4100,
> +		.rx_cnt_cfg	= 0x4104,
> +		.pcrx_ptr	= 0x4108,
> +		.glo_cfg	= 0x4204,
> +		.rst_idx	= 0x4208,
> +		.delay_irq	= 0x420c,
> +		.irq_status	= 0x4220,
> +		.irq_mask	= 0x4228,
> +		.adma_rx_dbg0	= 0x4238,
> +		.int_grp	= 0x4250,
>   	},
>   	.qdma = {
>   		.qtx_cfg	= 0x4400,

// ...

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 3eefb735ce19..d7d73295f0dc 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -110,16 +110,16 @@  static const struct mtk_reg_map mt7986_reg_map = {
 	.tx_irq_mask		= 0x461c,
 	.tx_irq_status		= 0x4618,
 	.pdma = {
-		.rx_ptr		= 0x6100,
-		.rx_cnt_cfg	= 0x6104,
-		.pcrx_ptr	= 0x6108,
-		.glo_cfg	= 0x6204,
-		.rst_idx	= 0x6208,
-		.delay_irq	= 0x620c,
-		.irq_status	= 0x6220,
-		.irq_mask	= 0x6228,
-		.adma_rx_dbg0	= 0x6238,
-		.int_grp	= 0x6250,
+		.rx_ptr		= 0x4100,
+		.rx_cnt_cfg	= 0x4104,
+		.pcrx_ptr	= 0x4108,
+		.glo_cfg	= 0x4204,
+		.rst_idx	= 0x4208,
+		.delay_irq	= 0x420c,
+		.irq_status	= 0x4220,
+		.irq_mask	= 0x4228,
+		.adma_rx_dbg0	= 0x4238,
+		.int_grp	= 0x4250,
 	},
 	.qdma = {
 		.qtx_cfg	= 0x4400,
@@ -1107,7 +1107,7 @@  static bool mtk_rx_get_desc(struct mtk_eth *eth, struct mtk_rx_dma_v2 *rxd,
 	rxd->rxd1 = READ_ONCE(dma_rxd->rxd1);
 	rxd->rxd3 = READ_ONCE(dma_rxd->rxd3);
 	rxd->rxd4 = READ_ONCE(dma_rxd->rxd4);
-	if (mtk_is_netsys_v2_or_greater(eth)) {
+	if (mtk_is_netsys_v3_or_greater(eth)) {
 		rxd->rxd5 = READ_ONCE(dma_rxd->rxd5);
 		rxd->rxd6 = READ_ONCE(dma_rxd->rxd6);
 	}
@@ -2028,7 +2028,7 @@  static int mtk_poll_rx(struct napi_struct *napi, int budget,
 			break;
 
 		/* find out which mac the packet come from. values start at 1 */
-		if (mtk_is_netsys_v2_or_greater(eth)) {
+		if (mtk_is_netsys_v3_or_greater(eth)) {
 			u32 val = RX_DMA_GET_SPORT_V2(trxd.rxd5);
 
 			switch (val) {
@@ -2140,7 +2140,7 @@  static int mtk_poll_rx(struct napi_struct *napi, int budget,
 		skb->dev = netdev;
 		bytes += skb->len;
 
-		if (mtk_is_netsys_v2_or_greater(eth)) {
+		if (mtk_is_netsys_v3_or_greater(eth)) {
 			reason = FIELD_GET(MTK_RXD5_PPE_CPU_REASON, trxd.rxd5);
 			hash = trxd.rxd5 & MTK_RXD5_FOE_ENTRY;
 			if (hash != MTK_RXD5_FOE_ENTRY)
@@ -2690,7 +2690,7 @@  static int mtk_rx_alloc(struct mtk_eth *eth, int ring_no, int rx_flag)
 
 		rxd->rxd3 = 0;
 		rxd->rxd4 = 0;
-		if (mtk_is_netsys_v2_or_greater(eth)) {
+		if (mtk_is_netsys_v3_or_greater(eth)) {
 			rxd->rxd5 = 0;
 			rxd->rxd6 = 0;
 			rxd->rxd7 = 0;
@@ -3893,7 +3893,7 @@  static int mtk_hw_init(struct mtk_eth *eth, bool reset)
 	else
 		mtk_hw_reset(eth);
 
-	if (mtk_is_netsys_v2_or_greater(eth)) {
+	if (mtk_is_netsys_v3_or_greater(eth)) {
 		/* Set FE to PDMAv2 if necessary */
 		val = mtk_r32(eth, MTK_FE_GLO_MISC);
 		mtk_w32(eth,  val | BIT(4), MTK_FE_GLO_MISC);
@@ -5169,11 +5169,11 @@  static const struct mtk_soc_data mt7981_data = {
 		.dma_len_offset = 8,
 	},
 	.rx = {
-		.desc_size = sizeof(struct mtk_rx_dma_v2),
-		.irq_done_mask = MTK_RX_DONE_INT_V2,
+		.desc_size = sizeof(struct mtk_rx_dma),
+		.irq_done_mask = MTK_RX_DONE_INT,
 		.dma_l4_valid = RX_DMA_L4_VALID_V2,
-		.dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
-		.dma_len_offset = 8,
+		.dma_max_len = MTK_TX_DMA_BUF_LEN,
+		.dma_len_offset = 16,
 	},
 };
 
@@ -5195,11 +5195,11 @@  static const struct mtk_soc_data mt7986_data = {
 		.dma_len_offset = 8,
 	},
 	.rx = {
-		.desc_size = sizeof(struct mtk_rx_dma_v2),
-		.irq_done_mask = MTK_RX_DONE_INT_V2,
+		.desc_size = sizeof(struct mtk_rx_dma),
+		.irq_done_mask = MTK_RX_DONE_INT,
 		.dma_l4_valid = RX_DMA_L4_VALID_V2,
-		.dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
-		.dma_len_offset = 8,
+		.dma_max_len = MTK_TX_DMA_BUF_LEN,
+		.dma_len_offset = 16,
 	},
 };