[v2, PATCH] add some features in stmmac

[v2, PATCH] add some features in stmmac

[Biao Huang]

Changes in v2:                                                                  
        1. reverse Christmas tree order in dwmac4_set_filter                    
        2. remove clause 45 patch, waiting for cl45 patch from Boon Leong       
v1:                                                                             
This series add some features in stmmac driver.                                 
        1. add support for hash table size 128/256                              
        2. add mdio clause 45 access from mac device for dwmac4.                
                                                                                
Biao Huang (1):                                                                 
  net: stmmac: add support for hash table size 128/256 in dwmac4                
                                                                                
 drivers/net/ethernet/stmicro/stmmac/common.h      |    7 +--                   
 drivers/net/ethernet/stmicro/stmmac/dwmac4.h      |    4 +-                    
 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c |   50 ++++++++++++--------- 
 drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c  |    1 +                     
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |    4 ++                    
 5 files changed, 40 insertions(+), 26 deletions(-)                             
                                                                                
--                                                                              
1.7.9.5

[v2, PATCH] net: stmmac: add support for hash table size 128/256 in dwmac4

[Biao Huang]

1. get hash table size in hw feature reigster, and add support
for taller hash table(128/256) in dwmac4.
2. only clear PR/HMC/PM bits of GMAC_PACKET_FILTER, to avoid
side effect to functions of other bits.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
---
 drivers/net/ethernet/stmicro/stmmac/common.h      |    7 +--
 drivers/net/ethernet/stmicro/stmmac/dwmac4.h      |    4 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c |   50 ++++++++++++---------
 drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c  |    1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |    4 ++
 5 files changed, 40 insertions(+), 26 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 272b9ca6..709dcec 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -335,6 +335,7 @@ struct dma_features {
 	/* 802.3az - Energy-Efficient Ethernet (EEE) */
 	unsigned int eee;
 	unsigned int av;
+	unsigned int hash_tb_sz;
 	unsigned int tsoen;
 	/* TX and RX csum */
 	unsigned int tx_coe;
@@ -427,9 +428,9 @@ struct mac_device_info {
 	struct mii_regs mii;	/* MII register Addresses */
 	struct mac_link link;
 	void __iomem *pcsr;     /* vpointer to device CSRs */
-	int multicast_filter_bins;
-	int unicast_filter_entries;
-	int mcast_bits_log2;
+	unsigned int multicast_filter_bins;
+	unsigned int unicast_filter_entries;
+	unsigned int mcast_bits_log2;
 	unsigned int rx_csum;
 	unsigned int pcs;
 	unsigned int pmt;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
index eb013d5..a5eb7df 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
@@ -18,8 +18,7 @@
 /*  MAC registers */
 #define GMAC_CONFIG			0x00000000
 #define GMAC_PACKET_FILTER		0x00000008
-#define GMAC_HASH_TAB_0_31		0x00000010
-#define GMAC_HASH_TAB_32_63		0x00000014
+#define GMAC_HASH_TAB(x)		(0x10 + x * 4)
 #define GMAC_RX_FLOW_CTRL		0x00000090
 #define GMAC_QX_TX_FLOW_CTRL(x)		(0x70 + x * 4)
 #define GMAC_TXQ_PRTY_MAP0		0x98
@@ -181,6 +180,7 @@ enum power_event {
 #define GMAC_HW_FEAT_MIISEL		BIT(0)
 
 /* MAC HW features1 bitmap */
+#define GMAC_HW_HASH_TB_SZ		GENMASK(25, 24)
 #define GMAC_HW_FEAT_AVSEL		BIT(20)
 #define GMAC_HW_TSOEN			BIT(18)
 #define GMAC_HW_TXFIFOSIZE		GENMASK(10, 6)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index 7e5d5db..1f682ec 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -401,41 +401,49 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
 			      struct net_device *dev)
 {
 	void __iomem *ioaddr = (void __iomem *)dev->base_addr;
-	unsigned int value = 0;
+	unsigned int value;
+	int numhashregs = (hw->multicast_filter_bins >> 5);
+	int mcbitslog2 = hw->mcast_bits_log2;
+	int i;
+
+	value = readl(ioaddr + GMAC_PACKET_FILTER);
+	value &= ~GMAC_PACKET_FILTER_PR;
+	value &= ~GMAC_PACKET_FILTER_HMC;
+	value &= ~GMAC_PACKET_FILTER_PM;
 
 	if (dev->flags & IFF_PROMISC) {
-		value = GMAC_PACKET_FILTER_PR;
+		value |= GMAC_PACKET_FILTER_PR;
 	} else if ((dev->flags & IFF_ALLMULTI) ||
-			(netdev_mc_count(dev) > HASH_TABLE_SIZE)) {
+		   (netdev_mc_count(dev) > hw->multicast_filter_bins)) {
 		/* Pass all multi */
-		value = GMAC_PACKET_FILTER_PM;
-		/* Set the 64 bits of the HASH tab. To be updated if taller
-		 * hash table is used
-		 */
-		writel(0xffffffff, ioaddr + GMAC_HASH_TAB_0_31);
-		writel(0xffffffff, ioaddr + GMAC_HASH_TAB_32_63);
+		value |= GMAC_PACKET_FILTER_PM;
+		/* Set all the bits of the HASH tab */
+		for (i = 0; i < numhashregs; i++)
+			writel(0xffffffff, ioaddr + GMAC_HASH_TAB(i));
 	} else if (!netdev_mc_empty(dev)) {
-		u32 mc_filter[2];
+		u32 mc_filter[8];
 		struct netdev_hw_addr *ha;
 
 		/* Hash filter for multicast */
-		value = GMAC_PACKET_FILTER_HMC;
+		value |= GMAC_PACKET_FILTER_HMC;
 
 		memset(mc_filter, 0, sizeof(mc_filter));
 		netdev_for_each_mc_addr(ha, dev) {
-			/* The upper 6 bits of the calculated CRC are used to
-			 * index the content of the Hash Table Reg 0 and 1.
+			/* The upper n bits of the calculated CRC are used to
+			 * index the contents of the hash table. The number of
+			 * bits used depends on the hardware configuration
+			 * selected at core configuration time.
 			 */
-			int bit_nr =
-				(bitrev32(~crc32_le(~0, ha->addr, 6)) >> 26);
-			/* The most significant bit determines the register
-			 * to use while the other 5 bits determines the bit
-			 * within the selected register
+			int bit_nr = bitrev32(~crc32_le(~0, ha->addr,
+					ETH_ALEN)) >> (32 - mcbitslog2);
+			/* The most significant bit determines the register to
+			 * use (H/L) while the other 5 bits determine the bit
+			 * within the register.
 			 */
-			mc_filter[bit_nr >> 5] |= (1 << (bit_nr & 0x1F));
+			mc_filter[bit_nr >> 5] |= (1 << (bit_nr & 0x1f));
 		}
-		writel(mc_filter[0], ioaddr + GMAC_HASH_TAB_0_31);
-		writel(mc_filter[1], ioaddr + GMAC_HASH_TAB_32_63);
+		for (i = 0; i < numhashregs; i++)
+			writel(mc_filter[i], ioaddr + GMAC_HASH_TAB(i));
 	}
 
 	/* Handle multiple unicast addresses */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
index edb6053..59afb53 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
@@ -354,6 +354,7 @@ static void dwmac4_get_hw_feature(void __iomem *ioaddr,
 
 	/* MAC HW feature1 */
 	hw_cap = readl(ioaddr + GMAC_HW_FEATURE1);
+	dma_cap->hash_tb_sz = (hw_cap & GMAC_HW_HASH_TB_SZ) >> 24;
 	dma_cap->av = (hw_cap & GMAC_HW_FEAT_AVSEL) >> 20;
 	dma_cap->tsoen = (hw_cap & GMAC_HW_TSOEN) >> 18;
 	/* RX and TX FIFO sizes are encoded as log2(n / 128). Undo that by
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 97c5e1a..1971f9f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -4159,6 +4159,10 @@ static int stmmac_hw_init(struct stmmac_priv *priv)
 		priv->plat->enh_desc = priv->dma_cap.enh_desc;
 		priv->plat->pmt = priv->dma_cap.pmt_remote_wake_up;
 		priv->hw->pmt = priv->plat->pmt;
+		if (priv->dma_cap.hash_tb_sz) {
+			priv->hw->multicast_filter_bins = BIT(priv->dma_cap.hash_tb_sz) * 32;
+			priv->hw->mcast_bits_log2 = ilog2(priv->hw->multicast_filter_bins);
+		}
 
 		/* TXCOE doesn't work in thresh DMA mode */
 		if (priv->plat->force_thresh_dma_mode)
-- 
1.7.9.5

Re: [v2, PATCH] net: stmmac: add support for hash table size 128/256 in dwmac4

[biao huang]

Dear All,
any comments about this patch?
Thanks.
On Tue, 2019-05-14 at 11:00 +0800, Biao Huang wrote:
> 1. get hash table size in hw feature reigster, and add support
> for taller hash table(128/256) in dwmac4.
> 2. only clear PR/HMC/PM bits of GMAC_PACKET_FILTER, to avoid
> side effect to functions of other bits.
> 
> Signed-off-by: Biao Huang <biao.huang@mediatek.com>
> ---
>  drivers/net/ethernet/stmicro/stmmac/common.h      |    7 +--
>  drivers/net/ethernet/stmicro/stmmac/dwmac4.h      |    4 +-
>  drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c |   50 ++++++++++++---------
>  drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c  |    1 +
>  drivers/net/ethernet/stmicro/stmmac/stmmac_main.c |    4 ++
>  5 files changed, 40 insertions(+), 26 deletions(-)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
> index 272b9ca6..709dcec 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/common.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/common.h
> @@ -335,6 +335,7 @@ struct dma_features {
>  	/* 802.3az - Energy-Efficient Ethernet (EEE) */
>  	unsigned int eee;
>  	unsigned int av;
> +	unsigned int hash_tb_sz;
>  	unsigned int tsoen;
>  	/* TX and RX csum */
>  	unsigned int tx_coe;
> @@ -427,9 +428,9 @@ struct mac_device_info {
>  	struct mii_regs mii;	/* MII register Addresses */
>  	struct mac_link link;
>  	void __iomem *pcsr;     /* vpointer to device CSRs */
> -	int multicast_filter_bins;
> -	int unicast_filter_entries;
> -	int mcast_bits_log2;
> +	unsigned int multicast_filter_bins;
> +	unsigned int unicast_filter_entries;
> +	unsigned int mcast_bits_log2;
>  	unsigned int rx_csum;
>  	unsigned int pcs;
>  	unsigned int pmt;
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
> index eb013d5..a5eb7df 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
> @@ -18,8 +18,7 @@
>  /*  MAC registers */
>  #define GMAC_CONFIG			0x00000000
>  #define GMAC_PACKET_FILTER		0x00000008
> -#define GMAC_HASH_TAB_0_31		0x00000010
> -#define GMAC_HASH_TAB_32_63		0x00000014
> +#define GMAC_HASH_TAB(x)		(0x10 + x * 4)
>  #define GMAC_RX_FLOW_CTRL		0x00000090
>  #define GMAC_QX_TX_FLOW_CTRL(x)		(0x70 + x * 4)
>  #define GMAC_TXQ_PRTY_MAP0		0x98
> @@ -181,6 +180,7 @@ enum power_event {
>  #define GMAC_HW_FEAT_MIISEL		BIT(0)
>  
>  /* MAC HW features1 bitmap */
> +#define GMAC_HW_HASH_TB_SZ		GENMASK(25, 24)
>  #define GMAC_HW_FEAT_AVSEL		BIT(20)
>  #define GMAC_HW_TSOEN			BIT(18)
>  #define GMAC_HW_TXFIFOSIZE		GENMASK(10, 6)
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
> index 7e5d5db..1f682ec 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
> @@ -401,41 +401,49 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
>  			      struct net_device *dev)
>  {
>  	void __iomem *ioaddr = (void __iomem *)dev->base_addr;
> -	unsigned int value = 0;
> +	unsigned int value;
> +	int numhashregs = (hw->multicast_filter_bins >> 5);
> +	int mcbitslog2 = hw->mcast_bits_log2;
> +	int i;
> +
> +	value = readl(ioaddr + GMAC_PACKET_FILTER);
> +	value &= ~GMAC_PACKET_FILTER_PR;
> +	value &= ~GMAC_PACKET_FILTER_HMC;
> +	value &= ~GMAC_PACKET_FILTER_PM;
>  
>  	if (dev->flags & IFF_PROMISC) {
> -		value = GMAC_PACKET_FILTER_PR;
> +		value |= GMAC_PACKET_FILTER_PR;
>  	} else if ((dev->flags & IFF_ALLMULTI) ||
> -			(netdev_mc_count(dev) > HASH_TABLE_SIZE)) {
> +		   (netdev_mc_count(dev) > hw->multicast_filter_bins)) {
>  		/* Pass all multi */
> -		value = GMAC_PACKET_FILTER_PM;
> -		/* Set the 64 bits of the HASH tab. To be updated if taller
> -		 * hash table is used
> -		 */
> -		writel(0xffffffff, ioaddr + GMAC_HASH_TAB_0_31);
> -		writel(0xffffffff, ioaddr + GMAC_HASH_TAB_32_63);
> +		value |= GMAC_PACKET_FILTER_PM;
> +		/* Set all the bits of the HASH tab */
> +		for (i = 0; i < numhashregs; i++)
> +			writel(0xffffffff, ioaddr + GMAC_HASH_TAB(i));
>  	} else if (!netdev_mc_empty(dev)) {
> -		u32 mc_filter[2];
> +		u32 mc_filter[8];
>  		struct netdev_hw_addr *ha;
>  
>  		/* Hash filter for multicast */
> -		value = GMAC_PACKET_FILTER_HMC;
> +		value |= GMAC_PACKET_FILTER_HMC;
>  
>  		memset(mc_filter, 0, sizeof(mc_filter));
>  		netdev_for_each_mc_addr(ha, dev) {
> -			/* The upper 6 bits of the calculated CRC are used to
> -			 * index the content of the Hash Table Reg 0 and 1.
> +			/* The upper n bits of the calculated CRC are used to
> +			 * index the contents of the hash table. The number of
> +			 * bits used depends on the hardware configuration
> +			 * selected at core configuration time.
>  			 */
> -			int bit_nr =
> -				(bitrev32(~crc32_le(~0, ha->addr, 6)) >> 26);
> -			/* The most significant bit determines the register
> -			 * to use while the other 5 bits determines the bit
> -			 * within the selected register
> +			int bit_nr = bitrev32(~crc32_le(~0, ha->addr,
> +					ETH_ALEN)) >> (32 - mcbitslog2);
> +			/* The most significant bit determines the register to
> +			 * use (H/L) while the other 5 bits determine the bit
> +			 * within the register.
>  			 */
> -			mc_filter[bit_nr >> 5] |= (1 << (bit_nr & 0x1F));
> +			mc_filter[bit_nr >> 5] |= (1 << (bit_nr & 0x1f));
>  		}
> -		writel(mc_filter[0], ioaddr + GMAC_HASH_TAB_0_31);
> -		writel(mc_filter[1], ioaddr + GMAC_HASH_TAB_32_63);
> +		for (i = 0; i < numhashregs; i++)
> +			writel(mc_filter[i], ioaddr + GMAC_HASH_TAB(i));
>  	}
>  
>  	/* Handle multiple unicast addresses */
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
> index edb6053..59afb53 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
> @@ -354,6 +354,7 @@ static void dwmac4_get_hw_feature(void __iomem *ioaddr,
>  
>  	/* MAC HW feature1 */
>  	hw_cap = readl(ioaddr + GMAC_HW_FEATURE1);
> +	dma_cap->hash_tb_sz = (hw_cap & GMAC_HW_HASH_TB_SZ) >> 24;
>  	dma_cap->av = (hw_cap & GMAC_HW_FEAT_AVSEL) >> 20;
>  	dma_cap->tsoen = (hw_cap & GMAC_HW_TSOEN) >> 18;
>  	/* RX and TX FIFO sizes are encoded as log2(n / 128). Undo that by
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 97c5e1a..1971f9f 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -4159,6 +4159,10 @@ static int stmmac_hw_init(struct stmmac_priv *priv)
>  		priv->plat->enh_desc = priv->dma_cap.enh_desc;
>  		priv->plat->pmt = priv->dma_cap.pmt_remote_wake_up;
>  		priv->hw->pmt = priv->plat->pmt;
> +		if (priv->dma_cap.hash_tb_sz) {
> +			priv->hw->multicast_filter_bins = BIT(priv->dma_cap.hash_tb_sz) * 32;
> +			priv->hw->mcast_bits_log2 = ilog2(priv->hw->multicast_filter_bins);
> +		}
>  
>  		/* TXCOE doesn't work in thresh DMA mode */
>  		if (priv->plat->force_thresh_dma_mode)

RE: [v2, PATCH] net: stmmac: add support for hash table size 128/256 in dwmac4

[Jose Abreu]

From: biao huang <biao.huang@mediatek.com>
Date: Fri, May 24, 2019 at 07:33:37

> any comments about this patch?

Can you please test your series on top of this one [1] and let me know 
the output of :
# ethtool -t eth0

Just to make sure that this patch does not introduce any regressions. The 
remaining ones of the series look fine by me!

[1] 







































































































































































https://patchwork.ozlabs.org/project/netdev/list/?series=109699

Thanks,
Jose Miguel Abreu

RE: [v2, PATCH] net: stmmac: add support for hash table size 128/256 in dwmac4

[biao huang]

On Fri, 2019-05-24 at 08:24 +0000, Jose Abreu wrote:
> From: biao huang <biao.huang@mediatek.com>
> Date: Fri, May 24, 2019 at 07:33:37
> 
> > any comments about this patch?
> 
> Can you please test your series on top of this one [1] and let me know 
> the output of :
> # ethtool -t eth0
"ethtol -T eth0"? This patch only affect hash table filter, seems no
relation to timestamp.
> 
> Just to make sure that this patch does not introduce any regressions. The 
> remaining ones of the series look fine by me!
> 
> [1] 
which one? Did I miss anything here?
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> https://patchwork.ozlabs.org/project/netdev/list/?series=109699
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> Thanks,
> Jose Miguel Abreu

RE: [v2, PATCH] net: stmmac: add support for hash table size 128/256 in dwmac4

[Jose Abreu]

From: biao huang <biao.huang@mediatek.com>
Date: Fri, May 24, 2019 at 09:31:44

> On Fri, 2019-05-24 at 08:24 +0000, Jose Abreu wrote:
> > From: biao huang <biao.huang@mediatek.com>
> > Date: Fri, May 24, 2019 at 07:33:37
> > 
> > > any comments about this patch?
> > 
> > Can you please test your series on top of this one [1] and let me know 
> > the output of :
> > # ethtool -t eth0
> "ethtol -T eth0"? This patch only affect hash table filter, seems no
> relation to timestamp.
> > 
> > Just to make sure that this patch does not introduce any regressions. The 
> > remaining ones of the series look fine by me!
> > 
> > [1] 
> which one? Did I miss anything here?

Sorry, my mail client tried to wrap the long link and ended up in a 
loooong email.

[1] https://patchwork.ozlabs.org/project/netdev/list/?series=109699

Thanks,
Jose Miguel Abreu

RE: [v2, PATCH] net: stmmac: add support for hash table size 128/256 in dwmac4

[biao huang]

Seems I should modify this patch base on
"https://patchwork.ozlabs.org/project/netdev/list/?series=109699"

On Fri, 2019-05-24 at 09:24 +0000, Jose Abreu wrote:
> From: biao huang <biao.huang@mediatek.com>
> Date: Fri, May 24, 2019 at 09:31:44
> 
> > On Fri, 2019-05-24 at 08:24 +0000, Jose Abreu wrote:
> > > From: biao huang <biao.huang@mediatek.com>
> > > Date: Fri, May 24, 2019 at 07:33:37
> > > 
> > > > any comments about this patch?
> > > 
> > > Can you please test your series on top of this one [1] and let me know 
> > > the output of :
> > > # ethtool -t eth0
> > "ethtol -T eth0"? This patch only affect hash table filter, seems no
> > relation to timestamp.
> > > 
execute "ethtool -t eth0", then we got "Cannot test: Operation not
supported", is there any config should be enabled?
> > > Just to make sure that this patch does not introduce any regressions. The 
> > > remaining ones of the series look fine by me!
> > > 
> > > [1] 
> > which one? Did I miss anything here?
> 
> Sorry, my mail client tried to wrap the long link and ended up in a 
> loooong email.
> 
> [1] https://patchwork.ozlabs.org/project/netdev/list/?series=109699
> 
Got it.
> Thanks,
> Jose Miguel Abreu