[PATCH net-next 00/26] net: stmmac: Misc improvements for XGMAC

[PATCH net-next 00/26] net: stmmac: Misc improvements for XGMAC

[Jose Abreu]

[ This series depend on 3caa61c20875 ("net: stmmac: Sync RX Buffer upon allocation")
which is already in -net but not -next ]

Misc improvements for -next which adds new features in XGMAC cores.

More info in commit logs.

---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---

Jose Abreu (26):
  net: stmmac: xgmac: Fix XGMAC selftests
  net: stmmac: xgmac: Implement MMC counters
  net: stmmac: Fix issues when number of Queues >= 4
  net: stmmac: xgmac: Implement set_mtl_tx_queue_weight()
  net: stmmac: xgmac: Implement tx_queue_prio()
  net: stmmac: Implement RSS and enable it in XGMAC core
  net: stmmac: selftests: Add RSS test
  net: stmmac: Implement VLAN Hash Filtering in XGMAC
  net: stmmac: selftests: Add test for VLAN and Double VLAN Filtering
  net: stmmac: Implement Safety Features in XGMAC core
  net: stmmac: Add Flexible RX Parser support in XGMAC
  net: stmmac: tc: Do not return a fragment entry
  net: stmmac: selftests: Add a selftest for Flexible RX Parser
  net: stmmac: Get correct timestamp values from XGMAC
  net: stmmac: Prepare to add Split Header support
  net: stmmac: xgmac: Correctly return that RX descriptor is not last
    one
  net: stmmac: Add Split Header support and enable it in XGMAC cores
  net: stmmac: dwxgmac: Add Flexible PPS support
  net: stmmac: Add ethtool register dump for XGMAC cores
  net: stmmac: Add a counter for Split Header packets
  net: stmmac: Add support for SA Insertion/Replacement in XGMAC cores
  net: stmmac: selftests: Add tests for SA Insertion/Replacement
  net: stmmac: xgmac: Add EEE support
  net: stmmac: Add support for VLAN Insertion Offload
  net: stmmac: selftests: Add selftest for VLAN TX Offload
  net: stmmac: selftests: Return proper error code to userspace

 drivers/net/ethernet/stmicro/stmmac/common.h       |  16 +
 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c  |   4 +
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     | 135 +++-
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 880 ++++++++++++++++++++-
 .../net/ethernet/stmicro/stmmac/dwxgmac2_descs.c   | 118 ++-
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c |  41 +-
 drivers/net/ethernet/stmicro/stmmac/hwif.c         |   4 +-
 drivers/net/ethernet/stmicro/stmmac/hwif.h         |  47 ++
 drivers/net/ethernet/stmicro/stmmac/mmc.h          |   9 +
 drivers/net/ethernet/stmicro/stmmac/mmc_core.c     | 192 +++++
 drivers/net/ethernet/stmicro/stmmac/stmmac.h       |  21 +
 .../net/ethernet/stmicro/stmmac/stmmac_ethtool.c   | 106 ++-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  | 380 +++++++--
 .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 513 +++++++++++-
 drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c    |   2 +-
 include/linux/stmmac.h                             |   1 +
 16 files changed, 2361 insertions(+), 108 deletions(-)

-- 
2.7.4

[PATCH net-next 01/26] net: stmmac: xgmac: Fix XGMAC selftests

[Jose Abreu]

Fixup the XGMAC selftests by correctly finishing the implementation of
set_filter callback.

Result:
$ ethtool -t enp4s0
The test result is PASS
The test extra info:
 1. MAC Loopback         	 0
 2. PHY Loopback         	 -95
 3. MMC Counters         	 -95
 4. EEE                  	 -95
 5. Hash Filter MC       	 0
 6. Perfect Filter UC    	 0
 7. MC Filter            	 0
 8. UC Filter            	 0
 9. Flow Control         	 0

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     |  7 +-
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 83 +++++++++++++++++++---
 2 files changed, 79 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 7f86dffb264d..3174b701aa90 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -44,11 +44,13 @@
 #define XGMAC_CORE_INIT_RX		0
 #define XGMAC_PACKET_FILTER		0x00000008
 #define XGMAC_FILTER_RA			BIT(31)
+#define XGMAC_FILTER_HPF		BIT(10)
 #define XGMAC_FILTER_PCF		BIT(7)
 #define XGMAC_FILTER_PM			BIT(4)
 #define XGMAC_FILTER_HMC		BIT(2)
 #define XGMAC_FILTER_PR			BIT(0)
 #define XGMAC_HASH_TABLE(x)		(0x00000010 + (x) * 4)
+#define XGMAC_MAX_HASH_TABLE		8
 #define XGMAC_RXQ_CTRL0			0x000000a0
 #define XGMAC_RXQEN(x)			GENMASK((x) * 2 + 1, (x) * 2)
 #define XGMAC_RXQEN_SHIFT(x)		((x) * 2)
@@ -99,11 +101,12 @@
 #define XGMAC_MDIO_ADDR			0x00000200
 #define XGMAC_MDIO_DATA			0x00000204
 #define XGMAC_MDIO_C22P			0x00000220
-#define XGMAC_ADDR0_HIGH		0x00000300
+#define XGMAC_ADDRx_HIGH(x)		(0x00000300 + (x) * 0x8)
+#define XGMAC_ADDR_MAX			32
 #define XGMAC_AE			BIT(31)
 #define XGMAC_DCS			GENMASK(19, 16)
 #define XGMAC_DCS_SHIFT			16
-#define XGMAC_ADDR0_LOW			0x00000304
+#define XGMAC_ADDRx_LOW(x)		(0x00000304 + (x) * 0x8)
 #define XGMAC_ARP_ADDR			0x00000c10
 #define XGMAC_TIMESTAMP_STATUS		0x00000d20
 #define XGMAC_TXTSC			BIT(15)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 0a32c96a7854..03a6a59650ca 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -4,6 +4,8 @@
  * stmmac XGMAC support.
  */
 
+#include <linux/bitrev.h>
+#include <linux/crc32.h>
 #include "stmmac.h"
 #include "dwxgmac2.h"
 
@@ -278,10 +280,10 @@ static void dwxgmac2_set_umac_addr(struct mac_device_info *hw,
 	u32 value;
 
 	value = (addr[5] << 8) | addr[4];
-	writel(value | XGMAC_AE, ioaddr + XGMAC_ADDR0_HIGH);
+	writel(value | XGMAC_AE, ioaddr + XGMAC_ADDRx_HIGH(reg_n));
 
 	value = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0];
-	writel(value, ioaddr + XGMAC_ADDR0_LOW);
+	writel(value, ioaddr + XGMAC_ADDRx_LOW(reg_n));
 }
 
 static void dwxgmac2_get_umac_addr(struct mac_device_info *hw,
@@ -291,8 +293,8 @@ static void dwxgmac2_get_umac_addr(struct mac_device_info *hw,
 	u32 hi_addr, lo_addr;
 
 	/* Read the MAC address from the hardware */
-	hi_addr = readl(ioaddr + XGMAC_ADDR0_HIGH);
-	lo_addr = readl(ioaddr + XGMAC_ADDR0_LOW);
+	hi_addr = readl(ioaddr + XGMAC_ADDRx_HIGH(reg_n));
+	lo_addr = readl(ioaddr + XGMAC_ADDRx_LOW(reg_n));
 
 	/* Extract the MAC address from the high and low words */
 	addr[0] = lo_addr & 0xff;
@@ -303,19 +305,82 @@ static void dwxgmac2_get_umac_addr(struct mac_device_info *hw,
 	addr[5] = (hi_addr >> 8) & 0xff;
 }
 
+static void dwxgmac2_set_mchash(void __iomem *ioaddr, u32 *mcfilterbits,
+				int mcbitslog2)
+{
+	int numhashregs, regs;
+
+	switch (mcbitslog2) {
+	case 6:
+		numhashregs = 2;
+		break;
+	case 7:
+		numhashregs = 4;
+		break;
+	case 8:
+		numhashregs = 8;
+		break;
+	default:
+		return;
+	}
+
+	for (regs = 0; regs < numhashregs; regs++)
+		writel(mcfilterbits[regs], ioaddr + XGMAC_HASH_TABLE(regs));
+}
+
 static void dwxgmac2_set_filter(struct mac_device_info *hw,
 				struct net_device *dev)
 {
 	void __iomem *ioaddr = (void __iomem *)dev->base_addr;
-	u32 value = XGMAC_FILTER_RA;
+	u32 value = readl(ioaddr + XGMAC_PACKET_FILTER);
+	int mcbitslog2 = hw->mcast_bits_log2;
+	u32 mc_filter[8];
+	int i;
+
+	value &= ~(XGMAC_FILTER_PR | XGMAC_FILTER_HMC | XGMAC_FILTER_PM);
+	value |= XGMAC_FILTER_HPF;
+
+	memset(mc_filter, 0, sizeof(mc_filter));
 
 	if (dev->flags & IFF_PROMISC) {
-		value |= XGMAC_FILTER_PR | XGMAC_FILTER_PCF;
+		value |= XGMAC_FILTER_PR;
+		value |= XGMAC_FILTER_PCF;
 	} else if ((dev->flags & IFF_ALLMULTI) ||
-		   (netdev_mc_count(dev) > HASH_TABLE_SIZE)) {
+		   (netdev_mc_count(dev) > hw->multicast_filter_bins)) {
 		value |= XGMAC_FILTER_PM;
-		writel(~0x0, ioaddr + XGMAC_HASH_TABLE(0));
-		writel(~0x0, ioaddr + XGMAC_HASH_TABLE(1));
+
+		for (i = 0; i < XGMAC_MAX_HASH_TABLE; i++)
+			writel(~0x0, ioaddr + XGMAC_HASH_TABLE(i));
+	} else if (!netdev_mc_empty(dev)) {
+		struct netdev_hw_addr *ha;
+
+		value |= XGMAC_FILTER_HMC;
+
+		netdev_for_each_mc_addr(ha, dev) {
+			int nr = (bitrev32(~crc32_le(~0, ha->addr, 6)) >>
+					(32 - mcbitslog2));
+			mc_filter[nr >> 5] |= (1 << (nr & 0x1F));
+		}
+	}
+
+	dwxgmac2_set_mchash(ioaddr, mc_filter, mcbitslog2);
+
+	/* Handle multiple unicast addresses */
+	if (netdev_uc_count(dev) > XGMAC_ADDR_MAX) {
+		value |= XGMAC_FILTER_PR;
+	} else {
+		struct netdev_hw_addr *ha;
+		int reg = 1;
+
+		netdev_for_each_uc_addr(ha, dev) {
+			dwxgmac2_set_umac_addr(hw, ha->addr, reg);
+			reg++;
+		}
+
+		for ( ; reg < XGMAC_ADDR_MAX; reg++) {
+			writel(0, ioaddr + XGMAC_ADDRx_HIGH(reg));
+			writel(0, ioaddr + XGMAC_ADDRx_LOW(reg));
+		}
 	}
 
 	writel(value, ioaddr + XGMAC_PACKET_FILTER);
-- 
2.7.4

[PATCH net-next 02/26] net: stmmac: xgmac: Implement MMC counters

[Jose Abreu]

Implement the MMC counters feature in XGMAC core.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     |   1 +
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c |   1 +
 drivers/net/ethernet/stmicro/stmmac/hwif.c         |   4 +-
 drivers/net/ethernet/stmicro/stmmac/hwif.h         |   1 +
 drivers/net/ethernet/stmicro/stmmac/mmc.h          |   9 +
 drivers/net/ethernet/stmicro/stmmac/mmc_core.c     | 192 +++++++++++++++++++++
 .../net/ethernet/stmicro/stmmac/stmmac_ethtool.c   |   6 +
 7 files changed, 212 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 3174b701aa90..86a42bc39d21 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -84,6 +84,7 @@
 #define XGMAC_HWFEAT_AVSEL		BIT(11)
 #define XGMAC_HWFEAT_RAVSEL		BIT(10)
 #define XGMAC_HWFEAT_ARPOFFSEL		BIT(9)
+#define XGMAC_HWFEAT_MMCSEL		BIT(8)
 #define XGMAC_HWFEAT_MGKSEL		BIT(7)
 #define XGMAC_HWFEAT_RWKSEL		BIT(6)
 #define XGMAC_HWFEAT_GMIISEL		BIT(1)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index a4f236e3593e..0f1c772e892a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -356,6 +356,7 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	dma_cap->atime_stamp = (hw_cap & XGMAC_HWFEAT_TSSEL) >> 12;
 	dma_cap->av = (hw_cap & XGMAC_HWFEAT_AVSEL) >> 11;
 	dma_cap->av &= (hw_cap & XGMAC_HWFEAT_RAVSEL) >> 10;
+	dma_cap->rmon = (hw_cap & XGMAC_HWFEAT_MMCSEL) >> 8;
 	dma_cap->pmt_magic_frame = (hw_cap & XGMAC_HWFEAT_MGKSEL) >> 7;
 	dma_cap->pmt_remote_wake_up = (hw_cap & XGMAC_HWFEAT_RWKSEL) >> 6;
 	dma_cap->mbps_1000 = (hw_cap & XGMAC_HWFEAT_GMIISEL) >> 1;
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.c b/drivers/net/ethernet/stmicro/stmmac/hwif.c
index 6c61b753b55e..3af2e5015245 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.c
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.c
@@ -201,7 +201,7 @@ static const struct stmmac_hwif_entry {
 		.min_id = DWXGMAC_CORE_2_10,
 		.regs = {
 			.ptp_off = PTP_XGMAC_OFFSET,
-			.mmc_off = 0,
+			.mmc_off = MMC_XGMAC_OFFSET,
 		},
 		.desc = &dwxgmac210_desc_ops,
 		.dma = &dwxgmac210_dma_ops,
@@ -209,7 +209,7 @@ static const struct stmmac_hwif_entry {
 		.hwtimestamp = &stmmac_ptp,
 		.mode = NULL,
 		.tc = &dwmac510_tc_ops,
-		.mmc = NULL,
+		.mmc = &dwxgmac_mmc_ops,
 		.setup = dwxgmac2_setup,
 		.quirks = NULL,
 	},
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 278c0dbec9d9..00539a09d1db 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -503,6 +503,7 @@ extern const struct stmmac_ops dwxgmac210_ops;
 extern const struct stmmac_dma_ops dwxgmac210_dma_ops;
 extern const struct stmmac_desc_ops dwxgmac210_desc_ops;
 extern const struct stmmac_mmc_ops dwmac_mmc_ops;
+extern const struct stmmac_mmc_ops dwxgmac_mmc_ops;
 
 #define GMAC_VERSION		0x00000020	/* GMAC CORE Version */
 #define GMAC4_VERSION		0x00000110	/* GMAC4+ CORE Version */
diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc.h b/drivers/net/ethernet/stmicro/stmmac/mmc.h
index 3587ceb9faf5..a0c05925883e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/mmc.h
+++ b/drivers/net/ethernet/stmicro/stmmac/mmc.h
@@ -24,6 +24,7 @@
 
 #define MMC_GMAC4_OFFSET		0x700
 #define MMC_GMAC3_X_OFFSET		0x100
+#define MMC_XGMAC_OFFSET		0x800
 
 struct stmmac_counters {
 	unsigned int mmc_tx_octetcount_gb;
@@ -116,6 +117,14 @@ struct stmmac_counters {
 	unsigned int mmc_rx_tcp_err_octets;
 	unsigned int mmc_rx_icmp_gd_octets;
 	unsigned int mmc_rx_icmp_err_octets;
+
+	/* FPE */
+	unsigned int mmc_tx_fpe_fragment_cntr;
+	unsigned int mmc_tx_hold_req_cntr;
+	unsigned int mmc_rx_packet_assembly_err_cntr;
+	unsigned int mmc_rx_packet_smd_err_cntr;
+	unsigned int mmc_rx_packet_assembly_ok_cntr;
+	unsigned int mmc_rx_fpe_fragment_cntr;
 };
 
 #endif /* __MMC_H__ */
diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
index a471db6d7b11..a223584f5f9a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
@@ -119,6 +119,64 @@
 #define MMC_RX_ICMP_GD_OCTETS		0x180
 #define MMC_RX_ICMP_ERR_OCTETS		0x184
 
+/* XGMAC MMC Registers */
+#define MMC_XGMAC_TX_OCTET_GB		0x14
+#define MMC_XGMAC_TX_PKT_GB		0x1c
+#define MMC_XGMAC_TX_BROAD_PKT_G	0x24
+#define MMC_XGMAC_TX_MULTI_PKT_G	0x2c
+#define MMC_XGMAC_TX_64OCT_GB		0x34
+#define MMC_XGMAC_TX_65OCT_GB		0x3c
+#define MMC_XGMAC_TX_128OCT_GB		0x44
+#define MMC_XGMAC_TX_256OCT_GB		0x4c
+#define MMC_XGMAC_TX_512OCT_GB		0x54
+#define MMC_XGMAC_TX_1024OCT_GB		0x5c
+#define MMC_XGMAC_TX_UNI_PKT_GB		0x64
+#define MMC_XGMAC_TX_MULTI_PKT_GB	0x6c
+#define MMC_XGMAC_TX_BROAD_PKT_GB	0x74
+#define MMC_XGMAC_TX_UNDER		0x7c
+#define MMC_XGMAC_TX_OCTET_G		0x84
+#define MMC_XGMAC_TX_PKT_G		0x8c
+#define MMC_XGMAC_TX_PAUSE		0x94
+#define MMC_XGMAC_TX_VLAN_PKT_G		0x9c
+#define MMC_XGMAC_TX_LPI_USEC		0xa4
+#define MMC_XGMAC_TX_LPI_TRAN		0xa8
+
+#define MMC_XGMAC_RX_PKT_GB		0x100
+#define MMC_XGMAC_RX_OCTET_GB		0x108
+#define MMC_XGMAC_RX_OCTET_G		0x110
+#define MMC_XGMAC_RX_BROAD_PKT_G	0x118
+#define MMC_XGMAC_RX_MULTI_PKT_G	0x120
+#define MMC_XGMAC_RX_CRC_ERR		0x128
+#define MMC_XGMAC_RX_RUNT_ERR		0x130
+#define MMC_XGMAC_RX_JABBER_ERR		0x134
+#define MMC_XGMAC_RX_UNDER		0x138
+#define MMC_XGMAC_RX_OVER		0x13c
+#define MMC_XGMAC_RX_64OCT_GB		0x140
+#define MMC_XGMAC_RX_65OCT_GB		0x148
+#define MMC_XGMAC_RX_128OCT_GB		0x150
+#define MMC_XGMAC_RX_256OCT_GB		0x158
+#define MMC_XGMAC_RX_512OCT_GB		0x160
+#define MMC_XGMAC_RX_1024OCT_GB		0x168
+#define MMC_XGMAC_RX_UNI_PKT_G		0x170
+#define MMC_XGMAC_RX_LENGTH_ERR		0x178
+#define MMC_XGMAC_RX_RANGE		0x180
+#define MMC_XGMAC_RX_PAUSE		0x188
+#define MMC_XGMAC_RX_FIFOOVER_PKT	0x190
+#define MMC_XGMAC_RX_VLAN_PKT_GB	0x198
+#define MMC_XGMAC_RX_WATCHDOG_ERR	0x1a0
+#define MMC_XGMAC_RX_LPI_USEC		0x1a4
+#define MMC_XGMAC_RX_LPI_TRAN		0x1a8
+#define MMC_XGMAC_RX_DISCARD_PKT_GB	0x1ac
+#define MMC_XGMAC_RX_DISCARD_OCT_GB	0x1b4
+#define MMC_XGMAC_RX_ALIGN_ERR_PKT	0x1bc
+
+#define MMC_XGMAC_TX_FPE_FRAG		0x208
+#define MMC_XGMAC_TX_HOLD_REQ		0x20c
+#define MMC_XGMAC_RX_PKT_ASSEMBLY_ERR	0x228
+#define MMC_XGMAC_RX_PKT_SMD_ERR	0x22c
+#define MMC_XGMAC_RX_PKT_ASSEMBLY_OK	0x230
+#define MMC_XGMAC_RX_FPE_FRAG		0x234
+
 static void dwmac_mmc_ctrl(void __iomem *mmcaddr, unsigned int mode)
 {
 	u32 value = readl(mmcaddr + MMC_CNTRL);
@@ -263,3 +321,137 @@ const struct stmmac_mmc_ops dwmac_mmc_ops = {
 	.intr_all_mask = dwmac_mmc_intr_all_mask,
 	.read = dwmac_mmc_read,
 };
+
+static void dwxgmac_mmc_ctrl(void __iomem *mmcaddr, unsigned int mode)
+{
+	u32 value = readl(mmcaddr + MMC_CNTRL);
+
+	value |= (mode & 0x3F);
+
+	writel(value, mmcaddr + MMC_CNTRL);
+}
+
+static void dwxgmac_mmc_intr_all_mask(void __iomem *mmcaddr)
+{
+	writel(MMC_DEFAULT_MASK, mmcaddr + MMC_RX_INTR_MASK);
+	writel(MMC_DEFAULT_MASK, mmcaddr + MMC_TX_INTR_MASK);
+}
+
+static void dwxgmac_read_mmc_reg(void __iomem *addr, u32 reg, u32 *dest)
+{
+	u64 tmp = 0;
+
+	tmp += readl(addr + reg);
+	tmp += ((u64 )readl(addr + reg + 0x4)) << 32;
+	if (tmp > GENMASK(31, 0))
+		*dest = ~0x0;
+	else
+		*dest = *dest + tmp;
+}
+
+/* This reads the MAC core counters (if actaully supported).
+ * by default the MMC core is programmed to reset each
+ * counter after a read. So all the field of the mmc struct
+ * have to be incremented.
+ */
+static void dwxgmac_mmc_read(void __iomem *mmcaddr, struct stmmac_counters *mmc)
+{
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_OCTET_GB,
+			     &mmc->mmc_tx_octetcount_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_PKT_GB,
+			     &mmc->mmc_tx_framecount_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_BROAD_PKT_G,
+			     &mmc->mmc_tx_broadcastframe_g);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_MULTI_PKT_G,
+			     &mmc->mmc_tx_multicastframe_g);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_64OCT_GB,
+			     &mmc->mmc_tx_64_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_65OCT_GB,
+			     &mmc->mmc_tx_65_to_127_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_128OCT_GB,
+			     &mmc->mmc_tx_128_to_255_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_256OCT_GB,
+			     &mmc->mmc_tx_256_to_511_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_512OCT_GB,
+			     &mmc->mmc_tx_512_to_1023_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_1024OCT_GB,
+			     &mmc->mmc_tx_1024_to_max_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_UNI_PKT_GB,
+			     &mmc->mmc_tx_unicast_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_MULTI_PKT_GB,
+			     &mmc->mmc_tx_multicast_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_BROAD_PKT_GB,
+			     &mmc->mmc_tx_broadcast_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_UNDER,
+			     &mmc->mmc_tx_underflow_error);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_OCTET_G,
+			     &mmc->mmc_tx_octetcount_g);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_PKT_G,
+			     &mmc->mmc_tx_framecount_g);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_PAUSE,
+			     &mmc->mmc_tx_pause_frame);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_TX_VLAN_PKT_G,
+			     &mmc->mmc_tx_vlan_frame_g);
+
+	/* MMC RX counter registers */
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_PKT_GB,
+			     &mmc->mmc_rx_framecount_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_OCTET_GB,
+			     &mmc->mmc_rx_octetcount_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_OCTET_G,
+			     &mmc->mmc_rx_octetcount_g);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_BROAD_PKT_G,
+			     &mmc->mmc_rx_broadcastframe_g);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_MULTI_PKT_G,
+			     &mmc->mmc_rx_multicastframe_g);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_CRC_ERR,
+			     &mmc->mmc_rx_crc_error);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_CRC_ERR,
+			     &mmc->mmc_rx_crc_error);
+	mmc->mmc_rx_run_error += readl(mmcaddr + MMC_XGMAC_RX_RUNT_ERR);
+	mmc->mmc_rx_jabber_error += readl(mmcaddr + MMC_XGMAC_RX_JABBER_ERR);
+	mmc->mmc_rx_undersize_g += readl(mmcaddr + MMC_XGMAC_RX_UNDER);
+	mmc->mmc_rx_oversize_g += readl(mmcaddr + MMC_XGMAC_RX_OVER);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_64OCT_GB,
+			     &mmc->mmc_rx_64_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_65OCT_GB,
+			     &mmc->mmc_rx_65_to_127_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_128OCT_GB,
+			     &mmc->mmc_rx_128_to_255_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_256OCT_GB,
+			     &mmc->mmc_rx_256_to_511_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_512OCT_GB,
+			     &mmc->mmc_rx_512_to_1023_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_1024OCT_GB,
+			     &mmc->mmc_rx_1024_to_max_octets_gb);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_UNI_PKT_G,
+			     &mmc->mmc_rx_unicast_g);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_LENGTH_ERR,
+			     &mmc->mmc_rx_length_error);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_RANGE,
+			     &mmc->mmc_rx_autofrangetype);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_PAUSE,
+			     &mmc->mmc_rx_pause_frames);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_FIFOOVER_PKT,
+			     &mmc->mmc_rx_fifo_overflow);
+	dwxgmac_read_mmc_reg(mmcaddr, MMC_XGMAC_RX_VLAN_PKT_GB,
+			     &mmc->mmc_rx_vlan_frames_gb);
+	mmc->mmc_rx_watchdog_error += readl(mmcaddr + MMC_XGMAC_RX_WATCHDOG_ERR);
+
+	mmc->mmc_tx_fpe_fragment_cntr += readl(mmcaddr + MMC_XGMAC_TX_FPE_FRAG);
+	mmc->mmc_tx_hold_req_cntr += readl(mmcaddr + MMC_XGMAC_TX_HOLD_REQ);
+	mmc->mmc_rx_packet_assembly_err_cntr +=
+		readl(mmcaddr + MMC_XGMAC_RX_PKT_ASSEMBLY_ERR);
+	mmc->mmc_rx_packet_smd_err_cntr +=
+		readl(mmcaddr + MMC_XGMAC_RX_PKT_SMD_ERR);
+	mmc->mmc_rx_packet_assembly_ok_cntr +=
+		readl(mmcaddr + MMC_XGMAC_RX_PKT_ASSEMBLY_OK);
+	mmc->mmc_rx_fpe_fragment_cntr +=
+		readl(mmcaddr + MMC_XGMAC_RX_FPE_FRAG);
+}
+
+const struct stmmac_mmc_ops dwxgmac_mmc_ops = {
+	.ctrl = dwxgmac_mmc_ctrl,
+	.intr_all_mask = dwxgmac_mmc_intr_all_mask,
+	.read = dwxgmac_mmc_read,
+};
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index 6efb66820d4c..d294590cba27 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -243,6 +243,12 @@ static const struct stmmac_stats stmmac_mmc[] = {
 	STMMAC_MMC_STAT(mmc_rx_tcp_err_octets),
 	STMMAC_MMC_STAT(mmc_rx_icmp_gd_octets),
 	STMMAC_MMC_STAT(mmc_rx_icmp_err_octets),
+	STMMAC_MMC_STAT(mmc_tx_fpe_fragment_cntr),
+	STMMAC_MMC_STAT(mmc_tx_hold_req_cntr),
+	STMMAC_MMC_STAT(mmc_rx_packet_assembly_err_cntr),
+	STMMAC_MMC_STAT(mmc_rx_packet_smd_err_cntr),
+	STMMAC_MMC_STAT(mmc_rx_packet_assembly_ok_cntr),
+	STMMAC_MMC_STAT(mmc_rx_fpe_fragment_cntr),
 };
 #define STMMAC_MMC_STATS_LEN ARRAY_SIZE(stmmac_mmc)
 
-- 
2.7.4

[PATCH net-next 03/26] net: stmmac: Fix issues when number of Queues >= 4

[Jose Abreu]

When queues >= 4 we use different registers but we were not subtracting
the offset of 4. Fix this.

Found out by Coverity.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c   | 4 ++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index 01c2e2d83e76..fc9954e4a772 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -85,6 +85,8 @@ static void dwmac4_rx_queue_priority(struct mac_device_info *hw,
 	u32 value;
 
 	base_register = (queue < 4) ? GMAC_RXQ_CTRL2 : GMAC_RXQ_CTRL3;
+	if (queue >= 4)
+		queue -= 4;
 
 	value = readl(ioaddr + base_register);
 
@@ -102,6 +104,8 @@ static void dwmac4_tx_queue_priority(struct mac_device_info *hw,
 	u32 value;
 
 	base_register = (queue < 4) ? GMAC_TXQ_PRTY_MAP0 : GMAC_TXQ_PRTY_MAP1;
+	if (queue >= 4)
+		queue -= 4;
 
 	value = readl(ioaddr + base_register);
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 03a6a59650ca..85c68b7ee8c6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -108,6 +108,8 @@ static void dwxgmac2_rx_queue_prio(struct mac_device_info *hw, u32 prio,
 	u32 value, reg;
 
 	reg = (queue < 4) ? XGMAC_RXQ_CTRL2 : XGMAC_RXQ_CTRL3;
+	if (queue >= 4)
+		queue -= 4;
 
 	value = readl(ioaddr + reg);
 	value &= ~XGMAC_PSRQ(queue);
@@ -171,6 +173,8 @@ static void dwxgmac2_map_mtl_to_dma(struct mac_device_info *hw, u32 queue,
 	u32 value, reg;
 
 	reg = (queue < 4) ? XGMAC_MTL_RXQ_DMA_MAP0 : XGMAC_MTL_RXQ_DMA_MAP1;
+	if (queue >= 4)
+		queue -= 4;
 
 	value = readl(ioaddr + reg);
 	value &= ~XGMAC_QxMDMACH(queue);
-- 
2.7.4

[PATCH net-next 04/26] net: stmmac: xgmac: Implement set_mtl_tx_queue_weight()

[Jose Abreu]

Implement the TX Queue Weight callback. In order for this to be active
we also need to set ETS algorithm when configuring Queue.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 85c68b7ee8c6..ce6503dfc86d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -144,7 +144,9 @@ static void dwxgmac2_prog_mtl_tx_algorithms(struct mac_device_info *hw,
 					    u32 tx_alg)
 {
 	void __iomem *ioaddr = hw->pcsr;
+	bool ets = true;
 	u32 value;
+	int i;
 
 	value = readl(ioaddr + XGMAC_MTL_OPMODE);
 	value &= ~XGMAC_ETSALG;
@@ -160,10 +162,28 @@ static void dwxgmac2_prog_mtl_tx_algorithms(struct mac_device_info *hw,
 		value |= XGMAC_DWRR;
 		break;
 	default:
+		ets = false;
 		break;
 	}
 
 	writel(value, ioaddr + XGMAC_MTL_OPMODE);
+
+	/* Set ETS if desired */
+	for (i = 0; i < MTL_MAX_TX_QUEUES; i++) {
+		value = readl(ioaddr + XGMAC_MTL_TCx_ETS_CONTROL(i));
+		value &= ~XGMAC_TSA;
+		if (ets)
+			value |= XGMAC_ETS;
+		writel(value, ioaddr + XGMAC_MTL_TCx_ETS_CONTROL(i));
+	}
+}
+
+static void dwxgmac2_set_mtl_tx_queue_weight(struct mac_device_info *hw,
+					     u32 weight, u32 queue)
+{
+	void __iomem *ioaddr = hw->pcsr;
+
+	writel(weight, ioaddr + XGMAC_MTL_TCx_QUANTUM_WEIGHT(queue));
 }
 
 static void dwxgmac2_map_mtl_to_dma(struct mac_device_info *hw, u32 queue,
@@ -412,7 +432,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.rx_queue_routing = NULL,
 	.prog_mtl_rx_algorithms = dwxgmac2_prog_mtl_rx_algorithms,
 	.prog_mtl_tx_algorithms = dwxgmac2_prog_mtl_tx_algorithms,
-	.set_mtl_tx_queue_weight = NULL,
+	.set_mtl_tx_queue_weight = dwxgmac2_set_mtl_tx_queue_weight,
 	.map_mtl_to_dma = dwxgmac2_map_mtl_to_dma,
 	.config_cbs = dwxgmac2_config_cbs,
 	.dump_regs = NULL,
-- 
2.7.4

[PATCH net-next 05/26] net: stmmac: xgmac: Implement tx_queue_prio()

[Jose Abreu]

Implement the TX Queue Priority callback in XGMAC core.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h      |  4 ++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c | 19 ++++++++++++++++++-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 86a42bc39d21..b77091161765 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -127,6 +127,10 @@
 #define XGMAC_MTL_RXQ_DMA_MAP1		0x00001034
 #define XGMAC_QxMDMACH(x)		GENMASK((x) * 8 + 3, (x) * 8)
 #define XGMAC_QxMDMACH_SHIFT(x)		((x) * 8)
+#define XGMAC_TC_PRTY_MAP0		0x00001040
+#define XGMAC_TC_PRTY_MAP1		0x00001044
+#define XGMAC_PSTC(x)			GENMASK((x) * 8 + 7, (x) * 8)
+#define XGMAC_PSTC_SHIFT(x)		((x) * 8)
 #define XGMAC_MTL_TXQ_OPMODE(x)		(0x00001100 + (0x80 * (x)))
 #define XGMAC_TQS			GENMASK(25, 16)
 #define XGMAC_TQS_SHIFT			16
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index ce6503dfc86d..bfbd5ae11540 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -118,6 +118,23 @@ static void dwxgmac2_rx_queue_prio(struct mac_device_info *hw, u32 prio,
 	writel(value, ioaddr + reg);
 }
 
+static void dwxgmac2_tx_queue_prio(struct mac_device_info *hw, u32 prio,
+				   u32 queue)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	u32 value, reg;
+
+	reg = (queue < 4) ? XGMAC_TC_PRTY_MAP0 : XGMAC_TC_PRTY_MAP1;
+	if (queue >= 4)
+		queue -= 4;
+
+	value = readl(ioaddr + reg);
+	value &= ~XGMAC_PSTC(queue);
+	value |= (prio << XGMAC_PSTC_SHIFT(queue)) & XGMAC_PSTC(queue);
+
+	writel(value, ioaddr + reg);
+}
+
 static void dwxgmac2_prog_mtl_rx_algorithms(struct mac_device_info *hw,
 					    u32 rx_alg)
 {
@@ -428,7 +445,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.rx_ipc = dwxgmac2_rx_ipc,
 	.rx_queue_enable = dwxgmac2_rx_queue_enable,
 	.rx_queue_prio = dwxgmac2_rx_queue_prio,
-	.tx_queue_prio = NULL,
+	.tx_queue_prio = dwxgmac2_tx_queue_prio,
 	.rx_queue_routing = NULL,
 	.prog_mtl_rx_algorithms = dwxgmac2_prog_mtl_rx_algorithms,
 	.prog_mtl_tx_algorithms = dwxgmac2_prog_mtl_tx_algorithms,
-- 
2.7.4

[PATCH net-next 06/26] net: stmmac: Implement RSS and enable it in XGMAC core

[Jose Abreu]

Implement the RSS functionality and add the corresponding callbacks in
XGMAC core.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/common.h       |  5 ++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     | 18 +++++-
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 52 +++++++++++++++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_descs.c   | 29 +++++++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c |  1 +
 drivers/net/ethernet/stmicro/stmmac/hwif.h         | 11 ++++
 drivers/net/ethernet/stmicro/stmmac/stmmac.h       |  9 +++
 .../net/ethernet/stmicro/stmmac/stmmac_ethtool.c   | 75 ++++++++++++++++++++++
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  | 38 ++++++++++-
 include/linux/stmmac.h                             |  1 +
 10 files changed, 236 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index ed872eed1cab..45a997fe571c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -354,6 +354,7 @@ struct dma_features {
 	unsigned int frpbs;
 	unsigned int frpes;
 	unsigned int addr64;
+	unsigned int rssen;
 };
 
 /* GMAC TX FIFO is 8K, Rx FIFO is 16K */
@@ -381,6 +382,10 @@ struct dma_features {
 
 #define JUMBO_LEN		9000
 
+/* Receive Side Scaling */
+#define STMMAC_RSS_HASH_KEY_SIZE	40
+#define STMMAC_RSS_MAX_TABLE_SIZE	256
+
 extern const struct stmmac_desc_ops enh_desc_ops;
 extern const struct stmmac_desc_ops ndesc_ops;
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index b77091161765..eb7c7726fcd6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -89,6 +89,7 @@
 #define XGMAC_HWFEAT_RWKSEL		BIT(6)
 #define XGMAC_HWFEAT_GMIISEL		BIT(1)
 #define XGMAC_HW_FEATURE1		0x00000120
+#define XGMAC_HWFEAT_RSSEN		BIT(20)
 #define XGMAC_HWFEAT_TSOEN		BIT(18)
 #define XGMAC_HWFEAT_ADDR64		GENMASK(15, 14)
 #define XGMAC_HWFEAT_TXFIFOSIZE		GENMASK(10, 6)
@@ -109,6 +110,17 @@
 #define XGMAC_DCS_SHIFT			16
 #define XGMAC_ADDRx_LOW(x)		(0x00000304 + (x) * 0x8)
 #define XGMAC_ARP_ADDR			0x00000c10
+#define XGMAC_RSS_CTRL			0x00000c80
+#define XGMAC_UDP4TE			BIT(3)
+#define XGMAC_TCP4TE			BIT(2)
+#define XGMAC_IP2TE			BIT(1)
+#define XGMAC_RSSE			BIT(0)
+#define XGMAC_RSS_ADDR			0x00000c88
+#define XGMAC_RSSIA_SHIFT		8
+#define XGMAC_ADDRT			BIT(2)
+#define XGMAC_CT			BIT(1)
+#define XGMAC_OB			BIT(0)
+#define XGMAC_RSS_DATA			0x00000c8c
 #define XGMAC_TIMESTAMP_STATUS		0x00000d20
 #define XGMAC_TXTSC			BIT(15)
 #define XGMAC_TXTIMESTAMP_NSEC		0x00000d30
@@ -125,8 +137,9 @@
 #define XGMAC_MTL_INT_STATUS		0x00001020
 #define XGMAC_MTL_RXQ_DMA_MAP0		0x00001030
 #define XGMAC_MTL_RXQ_DMA_MAP1		0x00001034
-#define XGMAC_QxMDMACH(x)		GENMASK((x) * 8 + 3, (x) * 8)
+#define XGMAC_QxMDMACH(x)		GENMASK((x) * 8 + 7, (x) * 8)
 #define XGMAC_QxMDMACH_SHIFT(x)		((x) * 8)
+#define XGMAC_QDDMACH			BIT(7)
 #define XGMAC_TC_PRTY_MAP0		0x00001040
 #define XGMAC_TC_PRTY_MAP1		0x00001044
 #define XGMAC_PSTC(x)			GENMASK((x) * 8 + 7, (x) * 8)
@@ -261,6 +274,9 @@
 #define XGMAC_RDES3_IOC			BIT(30)
 #define XGMAC_RDES3_LD			BIT(28)
 #define XGMAC_RDES3_CDA			BIT(27)
+#define XGMAC_RDES3_RSV			BIT(26)
+#define XGMAC_RDES3_L34T		GENMASK(23, 20)
+#define XGMAC_RDES3_L34T_SHIFT		20
 #define XGMAC_RDES3_ES			BIT(15)
 #define XGMAC_RDES3_PL			GENMASK(13, 0)
 #define XGMAC_RDES3_TSD			BIT(6)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index bfbd5ae11540..04eec85acc59 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -6,6 +6,7 @@
 
 #include <linux/bitrev.h>
 #include <linux/crc32.h>
+#include <linux/iopoll.h>
 #include "stmmac.h"
 #include "dwxgmac2.h"
 
@@ -439,6 +440,56 @@ static void dwxgmac2_set_mac_loopback(void __iomem *ioaddr, bool enable)
 	writel(value, ioaddr + XGMAC_RX_CONFIG);
 }
 
+static int dwxgmac2_rss_write_reg(void __iomem *ioaddr, bool is_key, int idx,
+				  u32 val)
+{
+	u32 ctrl = 0;
+
+	writel(val, ioaddr + XGMAC_RSS_DATA);
+	ctrl |= idx << XGMAC_RSSIA_SHIFT;
+	ctrl |= is_key ? XGMAC_ADDRT : 0x0;
+	ctrl |= XGMAC_OB;
+	writel(ctrl, ioaddr + XGMAC_RSS_ADDR);
+
+	return readl_poll_timeout(ioaddr + XGMAC_RSS_ADDR, ctrl,
+				  !(ctrl & XGMAC_OB), 100, 10000);
+}
+
+static int dwxgmac2_rss_configure(struct mac_device_info *hw,
+				  struct stmmac_rss *cfg, u32 num_rxq)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	u32 *key = (u32 *)cfg->key;
+	int i, ret;
+	u32 value;
+
+	value = readl(ioaddr + XGMAC_RSS_CTRL);
+	if (!cfg->enable) {
+		value &= ~XGMAC_RSSE;
+		writel(value, ioaddr + XGMAC_RSS_CTRL);
+		return 0;
+	}
+
+	for (i = 0; i < (sizeof(cfg->key) / sizeof(u32)); i++) {
+		ret = dwxgmac2_rss_write_reg(ioaddr, true, i, *key++);
+		if (ret)
+			return ret;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(cfg->table); i++) {
+		ret = dwxgmac2_rss_write_reg(ioaddr, false, i, cfg->table[i]);
+		if (ret)
+			return ret;
+	}
+
+	for (i = 0; i < num_rxq; i++)
+		dwxgmac2_map_mtl_to_dma(hw, i, XGMAC_QDDMACH);
+
+	value |= XGMAC_UDP4TE | XGMAC_TCP4TE | XGMAC_IP2TE | XGMAC_RSSE;
+	writel(value, ioaddr + XGMAC_RSS_CTRL);
+	return 0;
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
 	.core_init = dwxgmac2_core_init,
 	.set_mac = dwxgmac2_set_mac,
@@ -469,6 +520,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.debug = NULL,
 	.set_filter = dwxgmac2_set_filter,
 	.set_mac_loopback = dwxgmac2_set_mac_loopback,
+	.rss_configure = dwxgmac2_rss_configure,
 };
 
 int dwxgmac2_setup(struct stmmac_priv *priv)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
index c4c45402b8f8..9ff9d9ac1a50 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
@@ -254,6 +254,34 @@ static void dwxgmac2_clear(struct dma_desc *p)
 	p->des3 = 0;
 }
 
+static int dwxgmac2_get_rx_hash(struct dma_desc *p, u32 *hash,
+				enum pkt_hash_types *type)
+{
+	unsigned int rdes3 = le32_to_cpu(p->des3);
+	u32 ptype;
+
+	if (rdes3 & XGMAC_RDES3_RSV) {
+		ptype = (rdes3 & XGMAC_RDES3_L34T) >> XGMAC_RDES3_L34T_SHIFT;
+
+		switch (ptype) {
+		case 0x1:
+		case 0x2:
+		case 0x9:
+		case 0xA:
+			*type = PKT_HASH_TYPE_L4;
+			break;
+		default:
+			*type = PKT_HASH_TYPE_L3;
+			break;
+		}
+
+		*hash = le32_to_cpu(p->des1);
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
 const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.tx_status = dwxgmac2_get_tx_status,
 	.rx_status = dwxgmac2_get_rx_status,
@@ -277,4 +305,5 @@ const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.get_addr = dwxgmac2_get_addr,
 	.set_addr = dwxgmac2_set_addr,
 	.clear = dwxgmac2_clear,
+	.get_rx_hash = dwxgmac2_get_rx_hash,
 };
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 0f1c772e892a..45a6634ee397 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -363,6 +363,7 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 
 	/* MAC HW feature 1 */
 	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE1);
+	dma_cap->rssen = (hw_cap & XGMAC_HWFEAT_RSSEN) >> 20;
 	dma_cap->tsoen = (hw_cap & XGMAC_HWFEAT_TSOEN) >> 18;
 
 	dma_cap->addr64 = (hw_cap & XGMAC_HWFEAT_ADDR64) >> 14;
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 00539a09d1db..bfe7efee9481 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -86,6 +86,9 @@ struct stmmac_desc_ops {
 	void (*set_addr)(struct dma_desc *p, dma_addr_t addr);
 	/* clear descriptor */
 	void (*clear)(struct dma_desc *p);
+	/* RSS */
+	int (*get_rx_hash)(struct dma_desc *p, u32 *hash,
+			   enum pkt_hash_types *type);
 };
 
 #define stmmac_init_rx_desc(__priv, __args...) \
@@ -136,6 +139,8 @@ struct stmmac_desc_ops {
 	stmmac_do_void_callback(__priv, desc, set_addr, __args)
 #define stmmac_clear_desc(__priv, __args...) \
 	stmmac_do_void_callback(__priv, desc, clear, __args)
+#define stmmac_get_rx_hash(__priv, __args...) \
+	stmmac_do_callback(__priv, desc, get_rx_hash, __args)
 
 struct stmmac_dma_cfg;
 struct dma_features;
@@ -249,6 +254,7 @@ struct rgmii_adv;
 struct stmmac_safety_stats;
 struct stmmac_tc_entry;
 struct stmmac_pps_cfg;
+struct stmmac_rss;
 
 /* Helpers to program the MAC core */
 struct stmmac_ops {
@@ -327,6 +333,9 @@ struct stmmac_ops {
 			       u32 sub_second_inc, u32 systime_flags);
 	/* Loopback for selftests */
 	void (*set_mac_loopback)(void __iomem *ioaddr, bool enable);
+	/* RSS */
+	int (*rss_configure)(struct mac_device_info *hw,
+			     struct stmmac_rss *cfg, u32 num_rxq);
 };
 
 #define stmmac_core_init(__priv, __args...) \
@@ -397,6 +406,8 @@ struct stmmac_ops {
 	stmmac_do_callback(__priv, mac, flex_pps_config, __args)
 #define stmmac_set_mac_loopback(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, set_mac_loopback, __args)
+#define stmmac_rss_configure(__priv, __args...) \
+	stmmac_do_callback(__priv, mac, rss_configure, __args)
 
 /* PTP and HW Timer helpers */
 struct stmmac_hwtimestamp {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 5cd966c154f3..d2f6f56ae29c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -113,6 +113,12 @@ struct stmmac_pps_cfg {
 	struct timespec64 period;
 };
 
+struct stmmac_rss {
+	int enable;
+	u8 key[STMMAC_RSS_HASH_KEY_SIZE];
+	u32 table[STMMAC_RSS_MAX_TABLE_SIZE];
+};
+
 struct stmmac_priv {
 	/* Frequently used values are kept adjacent for cache effect */
 	u32 tx_coal_frames;
@@ -203,6 +209,9 @@ struct stmmac_priv {
 
 	/* Pulse Per Second output */
 	struct stmmac_pps_cfg pps[STMMAC_PPS_MAX];
+
+	/* Receive Side Scaling */
+	struct stmmac_rss rss;
 };
 
 enum stmmac_state {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index d294590cba27..2423160ab582 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -764,6 +764,76 @@ static int stmmac_set_coalesce(struct net_device *dev,
 	return 0;
 }
 
+static int stmmac_get_rxnfc(struct net_device *dev,
+			    struct ethtool_rxnfc *rxnfc, u32 *rule_locs)
+{
+	struct stmmac_priv *priv = netdev_priv(dev);
+
+	switch (rxnfc->cmd) {
+	case ETHTOOL_GRXRINGS:
+		rxnfc->data = priv->plat->rx_queues_to_use;
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static u32 stmmac_get_rxfh_key_size(struct net_device *dev)
+{
+	struct stmmac_priv *priv = netdev_priv(dev);
+
+	return sizeof(priv->rss.key);
+}
+
+static u32 stmmac_get_rxfh_indir_size(struct net_device *dev)
+{
+	struct stmmac_priv *priv = netdev_priv(dev);
+
+	return ARRAY_SIZE(priv->rss.table);
+}
+
+static int stmmac_get_rxfh(struct net_device *dev, u32 *indir, u8 *key,
+			   u8 *hfunc)
+{
+	struct stmmac_priv *priv = netdev_priv(dev);
+	int i;
+
+	if (indir) {
+		for (i = 0; i < ARRAY_SIZE(priv->rss.table); i++)
+			indir[i] = priv->rss.table[i];
+	}
+
+	if (key)
+		memcpy(key, priv->rss.key, sizeof(priv->rss.key));
+	if (hfunc)
+		*hfunc = ETH_RSS_HASH_TOP;
+
+	return 0;
+}
+
+static int stmmac_set_rxfh(struct net_device *dev, const u32 *indir,
+			   const u8 *key, const u8 hfunc)
+{
+	struct stmmac_priv *priv = netdev_priv(dev);
+	int i;
+
+	if ((hfunc != ETH_RSS_HASH_NO_CHANGE) && (hfunc != ETH_RSS_HASH_TOP))
+		return -EOPNOTSUPP;
+
+	if (indir) {
+		for (i = 0; i < ARRAY_SIZE(priv->rss.table); i++)
+			priv->rss.table[i] = indir[i];
+	}
+
+	if (key)
+		memcpy(priv->rss.key, key, sizeof(priv->rss.key));
+
+	return stmmac_rss_configure(priv, priv->hw, &priv->rss,
+				    priv->plat->rx_queues_to_use);
+}
+
 static int stmmac_get_ts_info(struct net_device *dev,
 			      struct ethtool_ts_info *info)
 {
@@ -855,6 +925,11 @@ static const struct ethtool_ops stmmac_ethtool_ops = {
 	.get_eee = stmmac_ethtool_op_get_eee,
 	.set_eee = stmmac_ethtool_op_set_eee,
 	.get_sset_count	= stmmac_get_sset_count,
+	.get_rxnfc = stmmac_get_rxnfc,
+	.get_rxfh_key_size = stmmac_get_rxfh_key_size,
+	.get_rxfh_indir_size = stmmac_get_rxfh_indir_size,
+	.get_rxfh = stmmac_get_rxfh,
+	.set_rxfh = stmmac_set_rxfh,
 	.get_ts_info = stmmac_get_ts_info,
 	.get_coalesce = stmmac_get_coalesce,
 	.set_coalesce = stmmac_set_coalesce,
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 65bd92c403c1..0daca766615e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2423,6 +2423,22 @@ static void stmmac_mac_config_rx_queues_routing(struct stmmac_priv *priv)
 	}
 }
 
+static void stmmac_mac_config_rss(struct stmmac_priv *priv)
+{
+	if (!priv->dma_cap.rssen || !priv->plat->rss_en) {
+		priv->rss.enable = false;
+		return;
+	}
+
+	if (priv->dev->features & NETIF_F_RXHASH)
+		priv->rss.enable = true;
+	else
+		priv->rss.enable = false;
+
+	stmmac_rss_configure(priv, priv->hw, &priv->rss,
+			     priv->plat->rx_queues_to_use);
+}
+
 /**
  *  stmmac_mtl_configuration - Configure MTL
  *  @priv: driver private structure
@@ -2467,6 +2483,10 @@ static void stmmac_mtl_configuration(struct stmmac_priv *priv)
 	/* Set RX routing */
 	if (rx_queues_count > 1)
 		stmmac_mac_config_rx_queues_routing(priv);
+
+	/* Receive Side Scaling */
+	if (rx_queues_count > 1)
+		stmmac_mac_config_rss(priv);
 }
 
 static void stmmac_safety_feat_configuration(struct stmmac_priv *priv)
@@ -3391,9 +3411,11 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 			priv->dev->stats.rx_errors++;
 			buf->page = NULL;
 		} else {
+			enum pkt_hash_types hash_type;
 			struct sk_buff *skb;
-			int frame_len;
 			unsigned int des;
+			int frame_len;
+			u32 hash;
 
 			stmmac_get_desc_addr(priv, p, &des);
 			frame_len = stmmac_get_rx_frame_len(priv, p, coe);
@@ -3458,6 +3480,10 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 			else
 				skb->ip_summed = CHECKSUM_UNNECESSARY;
 
+			if (!stmmac_get_rx_hash(priv, p, &hash, &hash_type))
+				skb_set_hash(skb, hash, hash_type);
+
+			skb_record_rx_queue(skb, queue);
 			napi_gro_receive(&ch->rx_napi, skb);
 
 			/* Data payload copied into SKB, page ready for recycle */
@@ -4182,7 +4208,7 @@ int stmmac_dvr_probe(struct device *device,
 	struct net_device *ndev = NULL;
 	struct stmmac_priv *priv;
 	u32 queue, maxq;
-	int ret = 0;
+	int i, ret = 0;
 
 	ndev = devm_alloc_etherdev_mqs(device, sizeof(struct stmmac_priv),
 				       MTL_MAX_TX_QUEUES, MTL_MAX_RX_QUEUES);
@@ -4290,6 +4316,14 @@ int stmmac_dvr_probe(struct device *device,
 #endif
 	priv->msg_enable = netif_msg_init(debug, default_msg_level);
 
+	/* Initialize RSS */
+	netdev_rss_key_fill(priv->rss.key, sizeof(priv->rss.key));
+	for (i = 0; i < ARRAY_SIZE(priv->rss.table); i++)
+		priv->rss.table[i] = i % priv->plat->rx_queues_to_use;
+
+	if (priv->dma_cap.rssen && priv->plat->rss_en)
+		ndev->features |= NETIF_F_RXHASH;
+
 	/* MTU range: 46 - hw-specific max */
 	ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
 	if ((priv->plat->enh_desc) || (priv->synopsys_id >= DWMAC_CORE_4_00))
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 7b3e354bcd3c..5cc6b6faf359 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -173,6 +173,7 @@ struct plat_stmmacenet_data {
 	int has_gmac4;
 	bool has_sun8i;
 	bool tso_en;
+	int rss_en;
 	int mac_port_sel_speed;
 	bool en_tx_lpi_clockgating;
 	int has_xgmac;
-- 
2.7.4

[PATCH net-next 07/26] net: stmmac: selftests: Add RSS test

[Jose Abreu]

Add a test for RSS in the stmmac selftests.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 .../net/ethernet/stmicro/stmmac/stmmac_selftests.c    | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index a97b1ea76438..83b775a8cedc 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -700,6 +700,21 @@ static int stmmac_test_flowctrl(struct stmmac_priv *priv)
 	return ret;
 }
 
+static int stmmac_test_rss(struct stmmac_priv *priv)
+{
+	struct stmmac_packet_attrs attr = { };
+
+	if (!priv->dma_cap.rssen || !priv->rss.enable)
+		return -EOPNOTSUPP;
+
+	attr.dst = priv->dev->dev_addr;
+	attr.exp_hash = true;
+	attr.sport = 0x321;
+	attr.dport = 0x123;
+
+	return __stmmac_test_loopback(priv, &attr);
+}
+
 #define STMMAC_LOOPBACK_NONE	0
 #define STMMAC_LOOPBACK_MAC	1
 #define STMMAC_LOOPBACK_PHY	2
@@ -745,6 +760,10 @@ static const struct stmmac_test {
 		.name = "Flow Control         ",
 		.lb = STMMAC_LOOPBACK_PHY,
 		.fn = stmmac_test_flowctrl,
+	}, {
+		.name = "RSS                  ",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_rss,
 	},
 };
 
-- 
2.7.4

[PATCH net-next 08/26] net: stmmac: Implement VLAN Hash Filtering in XGMAC

[Jose Abreu]

Implement the VLAN Hash Filtering feature in XGMAC core.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/common.h       |  1 +
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     | 10 +++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 41 +++++++++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c |  1 +
 drivers/net/ethernet/stmicro/stmmac/hwif.h         |  5 ++
 drivers/net/ethernet/stmicro/stmmac/stmmac.h       |  2 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  | 79 ++++++++++++++++++++++
 7 files changed, 139 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 45a997fe571c..e1e6f67041ec 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -355,6 +355,7 @@ struct dma_features {
 	unsigned int frpes;
 	unsigned int addr64;
 	unsigned int rssen;
+	unsigned int vlhash;
 };
 
 /* GMAC TX FIFO is 8K, Rx FIFO is 16K */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index eb7c7726fcd6..29bbe8218600 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -44,6 +44,7 @@
 #define XGMAC_CORE_INIT_RX		0
 #define XGMAC_PACKET_FILTER		0x00000008
 #define XGMAC_FILTER_RA			BIT(31)
+#define XGMAC_FILTER_VTFE		BIT(16)
 #define XGMAC_FILTER_HPF		BIT(10)
 #define XGMAC_FILTER_PCF		BIT(7)
 #define XGMAC_FILTER_PM			BIT(4)
@@ -51,6 +52,14 @@
 #define XGMAC_FILTER_PR			BIT(0)
 #define XGMAC_HASH_TABLE(x)		(0x00000010 + (x) * 4)
 #define XGMAC_MAX_HASH_TABLE		8
+#define XGMAC_VLAN_TAG			0x00000050
+#define XGMAC_VLAN_EDVLP		BIT(26)
+#define XGMAC_VLAN_VTHM			BIT(25)
+#define XGMAC_VLAN_DOVLTC		BIT(20)
+#define XGMAC_VLAN_ESVL			BIT(18)
+#define XGMAC_VLAN_ETV			BIT(16)
+#define XGMAC_VLAN_VID			GENMASK(15, 0)
+#define XGMAC_VLAN_HASH_TABLE		0x00000058
 #define XGMAC_RXQ_CTRL0			0x000000a0
 #define XGMAC_RXQEN(x)			GENMASK((x) * 2 + 1, (x) * 2)
 #define XGMAC_RXQEN_SHIFT(x)		((x) * 2)
@@ -87,6 +96,7 @@
 #define XGMAC_HWFEAT_MMCSEL		BIT(8)
 #define XGMAC_HWFEAT_MGKSEL		BIT(7)
 #define XGMAC_HWFEAT_RWKSEL		BIT(6)
+#define XGMAC_HWFEAT_VLHASH		BIT(4)
 #define XGMAC_HWFEAT_GMIISEL		BIT(1)
 #define XGMAC_HW_FEATURE1		0x00000120
 #define XGMAC_HWFEAT_RSSEN		BIT(20)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 04eec85acc59..e2dbebeb59e9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -490,6 +490,46 @@ static int dwxgmac2_rss_configure(struct mac_device_info *hw,
 	return 0;
 }
 
+static void dwxgmac2_update_vlan_hash(struct mac_device_info *hw, u32 hash,
+				      bool is_double)
+{
+	void __iomem *ioaddr = hw->pcsr;
+
+	writel(hash, ioaddr + XGMAC_VLAN_HASH_TABLE);
+
+	if (hash) {
+		u32 value = readl(ioaddr + XGMAC_PACKET_FILTER);
+
+		value |= XGMAC_FILTER_VTFE;
+
+		writel(value, ioaddr + XGMAC_PACKET_FILTER);
+
+		value |= XGMAC_VLAN_VTHM | XGMAC_VLAN_ETV;
+		if (is_double) {
+			value |= XGMAC_VLAN_EDVLP;
+			value |= XGMAC_VLAN_ESVL;
+			value |= XGMAC_VLAN_DOVLTC;
+		}
+
+		writel(value, ioaddr + XGMAC_VLAN_TAG);
+	} else {
+		u32 value = readl(ioaddr + XGMAC_PACKET_FILTER);
+
+		value &= ~XGMAC_FILTER_VTFE;
+
+		writel(value, ioaddr + XGMAC_PACKET_FILTER);
+
+		value = readl(ioaddr + XGMAC_VLAN_TAG);
+
+		value &= ~(XGMAC_VLAN_VTHM | XGMAC_VLAN_ETV);
+		value &= ~(XGMAC_VLAN_EDVLP | XGMAC_VLAN_ESVL);
+		value &= ~XGMAC_VLAN_DOVLTC;
+		value &= ~XGMAC_VLAN_VID;
+
+		writel(value, ioaddr + XGMAC_VLAN_TAG);
+	}
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
 	.core_init = dwxgmac2_core_init,
 	.set_mac = dwxgmac2_set_mac,
@@ -521,6 +561,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.set_filter = dwxgmac2_set_filter,
 	.set_mac_loopback = dwxgmac2_set_mac_loopback,
 	.rss_configure = dwxgmac2_rss_configure,
+	.update_vlan_hash = dwxgmac2_update_vlan_hash,
 };
 
 int dwxgmac2_setup(struct stmmac_priv *priv)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 45a6634ee397..b50e275e76c2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -359,6 +359,7 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	dma_cap->rmon = (hw_cap & XGMAC_HWFEAT_MMCSEL) >> 8;
 	dma_cap->pmt_magic_frame = (hw_cap & XGMAC_HWFEAT_MGKSEL) >> 7;
 	dma_cap->pmt_remote_wake_up = (hw_cap & XGMAC_HWFEAT_RWKSEL) >> 6;
+	dma_cap->vlhash = (hw_cap & XGMAC_HWFEAT_VLHASH) >> 4;
 	dma_cap->mbps_1000 = (hw_cap & XGMAC_HWFEAT_GMIISEL) >> 1;
 
 	/* MAC HW feature 1 */
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index bfe7efee9481..52fc2344b066 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -336,6 +336,9 @@ struct stmmac_ops {
 	/* RSS */
 	int (*rss_configure)(struct mac_device_info *hw,
 			     struct stmmac_rss *cfg, u32 num_rxq);
+	/* VLAN */
+	void (*update_vlan_hash)(struct mac_device_info *hw, u32 hash,
+				 bool is_double);
 };
 
 #define stmmac_core_init(__priv, __args...) \
@@ -408,6 +411,8 @@ struct stmmac_ops {
 	stmmac_do_void_callback(__priv, mac, set_mac_loopback, __args)
 #define stmmac_rss_configure(__priv, __args...) \
 	stmmac_do_callback(__priv, mac, rss_configure, __args)
+#define stmmac_update_vlan_hash(__priv, __args...) \
+	stmmac_do_void_callback(__priv, mac, update_vlan_hash, __args)
 
 /* PTP and HW Timer helpers */
 struct stmmac_hwtimestamp {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index d2f6f56ae29c..4179559b11ad 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -13,6 +13,7 @@
 #define DRV_MODULE_VERSION	"Jan_2016"
 
 #include <linux/clk.h>
+#include <linux/if_vlan.h>
 #include <linux/stmmac.h>
 #include <linux/phylink.h>
 #include <linux/pci.h>
@@ -191,6 +192,7 @@ struct stmmac_priv {
 	spinlock_t ptp_lock;
 	void __iomem *mmcaddr;
 	void __iomem *ptpaddr;
+	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *dbgfs_dir;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 0daca766615e..5ac86d6a8e40 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -4043,6 +4043,79 @@ static void stmmac_exit_fs(struct net_device *dev)
 }
 #endif /* CONFIG_DEBUG_FS */
 
+static u32 stmmac_vid_crc32_le(__le16 vid_le)
+{
+	unsigned char *data = (unsigned char *)&vid_le;
+	unsigned char data_byte = 0;
+	u32 crc = ~0x0;
+	u32 temp = 0;
+	int i, bits;
+
+	bits = get_bitmask_order(VLAN_VID_MASK);
+	for (i = 0; i < bits; i++) {
+		if ((i % 8) == 0)
+			data_byte = data[i / 8];
+
+		temp = ((crc & 1) ^ data_byte) & 1;
+		crc >>= 1;
+		data_byte >>= 1;
+
+		if (temp)
+			crc ^= 0xedb88320;
+	}
+
+	return crc;
+}
+
+static int stmmac_vlan_update(struct stmmac_priv *priv, bool is_double)
+{
+	u32 crc, hash = 0;
+	u16 vid;
+
+	for_each_set_bit(vid, priv->active_vlans, VLAN_N_VID) {
+		__le16 vid_le = cpu_to_le16(vid);
+		crc = bitrev32(~stmmac_vid_crc32_le(vid_le)) >> 28;
+		hash |= (1 << crc);
+	}
+
+	return stmmac_update_vlan_hash(priv, priv->hw, hash, is_double);
+}
+
+static int stmmac_vlan_rx_add_vid(struct net_device *ndev, __be16 proto, u16 vid)
+{
+	struct stmmac_priv *priv = netdev_priv(ndev);
+	bool is_double = false;
+	int ret;
+
+	if (!priv->dma_cap.vlhash)
+		return -EOPNOTSUPP;
+	if (be16_to_cpu(proto) == ETH_P_8021AD)
+		is_double = true;
+
+	set_bit(vid, priv->active_vlans);
+	ret = stmmac_vlan_update(priv, is_double);
+	if (ret) {
+		clear_bit(vid, priv->active_vlans);
+		return ret;
+	}
+
+	return ret;
+}
+
+static int stmmac_vlan_rx_kill_vid(struct net_device *ndev, __be16 proto, u16 vid)
+{
+	struct stmmac_priv *priv = netdev_priv(ndev);
+	bool is_double = false;
+
+	if (!priv->dma_cap.vlhash)
+		return -EOPNOTSUPP;
+	if (be16_to_cpu(proto) == ETH_P_8021AD)
+		is_double = true;
+
+	clear_bit(vid, priv->active_vlans);
+	return stmmac_vlan_update(priv, is_double);
+}
+
 static const struct net_device_ops stmmac_netdev_ops = {
 	.ndo_open = stmmac_open,
 	.ndo_start_xmit = stmmac_xmit,
@@ -4059,6 +4132,8 @@ static const struct net_device_ops stmmac_netdev_ops = {
 	.ndo_poll_controller = stmmac_poll_controller,
 #endif
 	.ndo_set_mac_address = stmmac_set_mac_address,
+	.ndo_vlan_rx_add_vid = stmmac_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid = stmmac_vlan_rx_kill_vid,
 };
 
 static void stmmac_reset_subtask(struct stmmac_priv *priv)
@@ -4313,6 +4388,10 @@ int stmmac_dvr_probe(struct device *device,
 #ifdef STMMAC_VLAN_TAG_USED
 	/* Both mac100 and gmac support receive VLAN tag detection */
 	ndev->features |= NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX;
+	if (priv->dma_cap.vlhash) {
+		ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+		ndev->features |= NETIF_F_HW_VLAN_STAG_FILTER;
+	}
 #endif
 	priv->msg_enable = netif_msg_init(debug, default_msg_level);
 
-- 
2.7.4

[PATCH net-next 09/26] net: stmmac: selftests: Add test for VLAN and Double VLAN Filtering

[Jose Abreu]

Add a selftest for VLAN and Double VLAN Filtering in stmmac.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 205 +++++++++++++++++++++
 1 file changed, 205 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index 83b775a8cedc..6b08bb15af15 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -715,6 +715,203 @@ static int stmmac_test_rss(struct stmmac_priv *priv)
 	return __stmmac_test_loopback(priv, &attr);
 }
 
+static int stmmac_test_vlan_validate(struct sk_buff *skb,
+				     struct net_device *ndev,
+				     struct packet_type *pt,
+				     struct net_device *orig_ndev)
+{
+	struct stmmac_test_priv *tpriv = pt->af_packet_priv;
+	struct stmmachdr *shdr;
+	struct ethhdr *ehdr;
+	struct udphdr *uhdr;
+	struct iphdr *ihdr;
+
+	skb = skb_unshare(skb, GFP_ATOMIC);
+	if (!skb)
+		goto out;
+
+	if (skb_linearize(skb))
+		goto out;
+	if (skb_headlen(skb) < (STMMAC_TEST_PKT_SIZE - ETH_HLEN))
+		goto out;
+
+	ehdr = (struct ethhdr *)skb_mac_header(skb);
+	if (!ether_addr_equal(ehdr->h_dest, tpriv->packet->dst))
+		goto out;
+
+	ihdr = ip_hdr(skb);
+	if (tpriv->double_vlan)
+		ihdr = (struct iphdr *)(skb_network_header(skb) + 4);
+	if (ihdr->protocol != IPPROTO_UDP)
+		goto out;
+
+	uhdr = (struct udphdr *)((u8 *)ihdr + 4 * ihdr->ihl);
+	if (uhdr->dest != htons(tpriv->packet->dport))
+		goto out;
+
+	shdr = (struct stmmachdr *)((u8 *)uhdr + sizeof(*uhdr));
+	if (shdr->magic != cpu_to_be64(STMMAC_TEST_PKT_MAGIC))
+		goto out;
+
+	tpriv->ok = true;
+	complete(&tpriv->comp);
+
+out:
+	kfree_skb(skb);
+	return 0;
+}
+
+static int stmmac_test_vlanfilt(struct stmmac_priv *priv)
+{
+	struct stmmac_packet_attrs attr = { };
+	struct stmmac_test_priv *tpriv;
+	struct sk_buff *skb = NULL;
+	int ret = 0, i;
+
+	if (!priv->dma_cap.vlhash)
+		return -EOPNOTSUPP;
+
+	tpriv = kzalloc(sizeof(*tpriv), GFP_KERNEL);
+	if (!tpriv)
+		return -ENOMEM;
+
+	tpriv->ok = false;
+	init_completion(&tpriv->comp);
+
+	tpriv->pt.type = htons(ETH_P_IP);
+	tpriv->pt.func = stmmac_test_vlan_validate;
+	tpriv->pt.dev = priv->dev;
+	tpriv->pt.af_packet_priv = tpriv;
+	tpriv->packet = &attr;
+
+	/*
+	 * As we use HASH filtering, false positives may appear. This is a
+	 * specially chosen ID so that adjacent IDs (+4) have different
+	 * HASH values.
+	 */
+	tpriv->vlan_id = 0x123;
+	dev_add_pack(&tpriv->pt);
+
+	ret = vlan_vid_add(priv->dev, htons(ETH_P_8021Q), tpriv->vlan_id);
+	if (ret)
+		goto cleanup;
+
+	for (i = 0; i < 4; i++) {
+		attr.vlan = 1;
+		attr.vlan_id_out = tpriv->vlan_id + i;
+		attr.dst = priv->dev->dev_addr;
+		attr.sport = 9;
+		attr.dport = 9;
+
+		skb = stmmac_test_get_udp_skb(priv, &attr);
+		if (!skb) {
+			ret = -ENOMEM;
+			goto vlan_del;
+		}
+
+		skb_set_queue_mapping(skb, 0);
+		ret = dev_queue_xmit(skb);
+		if (ret)
+			goto vlan_del;
+
+		wait_for_completion_timeout(&tpriv->comp, STMMAC_LB_TIMEOUT);
+		ret = !tpriv->ok;
+		if (ret && !i) {
+			goto vlan_del;
+		} else if (!ret && i) {
+			ret = -1;
+			goto vlan_del;
+		} else {
+			ret = 0;
+		}
+
+		tpriv->ok = false;
+	}
+
+vlan_del:
+	vlan_vid_del(priv->dev, htons(ETH_P_8021Q), tpriv->vlan_id);
+cleanup:
+	dev_remove_pack(&tpriv->pt);
+	kfree(tpriv);
+	return ret;
+}
+
+static int stmmac_test_dvlanfilt(struct stmmac_priv *priv)
+{
+	struct stmmac_packet_attrs attr = { };
+	struct stmmac_test_priv *tpriv;
+	struct sk_buff *skb = NULL;
+	int ret = 0, i;
+
+	if (!priv->dma_cap.vlhash)
+		return -EOPNOTSUPP;
+
+	tpriv = kzalloc(sizeof(*tpriv), GFP_KERNEL);
+	if (!tpriv)
+		return -ENOMEM;
+
+	tpriv->ok = false;
+	tpriv->double_vlan = true;
+	init_completion(&tpriv->comp);
+
+	tpriv->pt.type = htons(ETH_P_8021Q);
+	tpriv->pt.func = stmmac_test_vlan_validate;
+	tpriv->pt.dev = priv->dev;
+	tpriv->pt.af_packet_priv = tpriv;
+	tpriv->packet = &attr;
+
+	/*
+	 * As we use HASH filtering, false positives may appear. This is a
+	 * specially chosen ID so that adjacent IDs (+4) have different
+	 * HASH values.
+	 */
+	tpriv->vlan_id = 0x123;
+	dev_add_pack(&tpriv->pt);
+
+	ret = vlan_vid_add(priv->dev, htons(ETH_P_8021AD), tpriv->vlan_id);
+	if (ret)
+		goto cleanup;
+
+	for (i = 0; i < 4; i++) {
+		attr.vlan = 2;
+		attr.vlan_id_out = tpriv->vlan_id + i;
+		attr.dst = priv->dev->dev_addr;
+		attr.sport = 9;
+		attr.dport = 9;
+
+		skb = stmmac_test_get_udp_skb(priv, &attr);
+		if (!skb) {
+			ret = -ENOMEM;
+			goto vlan_del;
+		}
+
+		skb_set_queue_mapping(skb, 0);
+		ret = dev_queue_xmit(skb);
+		if (ret)
+			goto vlan_del;
+
+		wait_for_completion_timeout(&tpriv->comp, STMMAC_LB_TIMEOUT);
+		ret = !tpriv->ok;
+		if (ret && !i) {
+			goto vlan_del;
+		} else if (!ret && i) {
+			ret = -1;
+			goto vlan_del;
+		} else {
+			ret = 0;
+		}
+
+		tpriv->ok = false;
+	}
+
+vlan_del:
+	vlan_vid_del(priv->dev, htons(ETH_P_8021AD), tpriv->vlan_id);
+cleanup:
+	dev_remove_pack(&tpriv->pt);
+	kfree(tpriv);
+	return ret;
+}
+
 #define STMMAC_LOOPBACK_NONE	0
 #define STMMAC_LOOPBACK_MAC	1
 #define STMMAC_LOOPBACK_PHY	2
@@ -764,6 +961,14 @@ static const struct stmmac_test {
 		.name = "RSS                  ",
 		.lb = STMMAC_LOOPBACK_PHY,
 		.fn = stmmac_test_rss,
+	}, {
+		.name = "VLAN Filtering       ",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_vlanfilt,
+	}, {
+		.name = "Double VLAN Filtering",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_dvlanfilt,
 	},
 };
 
-- 
2.7.4

[PATCH net-next 10/26] net: stmmac: Implement Safety Features in XGMAC core

[Jose Abreu]

XGMAC also supports Safety Features. This patch implements the
configuration and handling of this feature in XGMAC core.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     |  26 ++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 281 +++++++++++++++++++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c |   4 +
 3 files changed, 311 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 29bbe8218600..3d8782f99f64 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -110,6 +110,12 @@
 #define XGMAC_HWFEAT_RXCHCNT		GENMASK(15, 12)
 #define XGMAC_HWFEAT_TXQCNT		GENMASK(9, 6)
 #define XGMAC_HWFEAT_RXQCNT		GENMASK(3, 0)
+#define XGMAC_HW_FEATURE3		0x00000128
+#define XGMAC_HWFEAT_ASP		GENMASK(15, 14)
+#define XGMAC_MAC_DPP_FSM_INT_STATUS	0x00000150
+#define XGMAC_MAC_FSM_CONTROL		0x00000158
+#define XGMAC_PRTYEN			BIT(1)
+#define XGMAC_TMOUTEN			BIT(0)
 #define XGMAC_MDIO_ADDR			0x00000200
 #define XGMAC_MDIO_DATA			0x00000204
 #define XGMAC_MDIO_C22P			0x00000220
@@ -154,6 +160,16 @@
 #define XGMAC_TC_PRTY_MAP1		0x00001044
 #define XGMAC_PSTC(x)			GENMASK((x) * 8 + 7, (x) * 8)
 #define XGMAC_PSTC_SHIFT(x)		((x) * 8)
+#define XGMAC_MTL_ECC_CONTROL		0x000010c0
+#define XGMAC_MTL_SAFETY_INT_STATUS	0x000010c4
+#define XGMAC_MEUIS			BIT(1)
+#define XGMAC_MECIS			BIT(0)
+#define XGMAC_MTL_ECC_INT_ENABLE	0x000010c8
+#define XGMAC_RPCEIE			BIT(12)
+#define XGMAC_ECEIE			BIT(8)
+#define XGMAC_RXCEIE			BIT(4)
+#define XGMAC_TXCEIE			BIT(0)
+#define XGMAC_MTL_ECC_INT_STATUS	0x000010cc
 #define XGMAC_MTL_TXQ_OPMODE(x)		(0x00001100 + (0x80 * (x)))
 #define XGMAC_TQS			GENMASK(25, 16)
 #define XGMAC_TQS_SHIFT			16
@@ -218,6 +234,16 @@
 #define XGMAC_TDPS			GENMASK(29, 0)
 #define XGMAC_RX_EDMA_CTRL		0x00003044
 #define XGMAC_RDPS			GENMASK(29, 0)
+#define XGMAC_DMA_SAFETY_INT_STATUS	0x00003064
+#define XGMAC_MCSIS			BIT(31)
+#define XGMAC_MSUIS			BIT(29)
+#define XGMAC_MSCIS			BIT(28)
+#define XGMAC_DEUIS			BIT(1)
+#define XGMAC_DECIS			BIT(0)
+#define XGMAC_DMA_ECC_INT_ENABLE	0x00003068
+#define XGMAC_DCEIE			BIT(1)
+#define XGMAC_TCEIE			BIT(0)
+#define XGMAC_DMA_ECC_INT_STATUS	0x0000306c
 #define XGMAC_DMA_CH_CONTROL(x)		(0x00003100 + (0x80 * (x)))
 #define XGMAC_PBLx8			BIT(16)
 #define XGMAC_DMA_CH_TX_CONTROL(x)	(0x00003104 + (0x80 * (x)))
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index e2dbebeb59e9..19dfb72cab11 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -530,6 +530,284 @@ static void dwxgmac2_update_vlan_hash(struct mac_device_info *hw, u32 hash,
 	}
 }
 
+struct dwxgmac3_error_desc {
+	bool valid;
+	const char *desc;
+	const char *detailed_desc;
+};
+
+#define STAT_OFF(field)		offsetof(struct stmmac_safety_stats, field)
+
+static void dwxgmac3_log_error(struct net_device *ndev, u32 value, bool corr,
+			       const char *module_name,
+			       const struct dwxgmac3_error_desc *desc,
+			       unsigned long field_offset,
+			       struct stmmac_safety_stats *stats)
+{
+	unsigned long loc, mask;
+	u8 *bptr = (u8 *)stats;
+	unsigned long *ptr;
+
+	ptr = (unsigned long *)(bptr + field_offset);
+
+	mask = value;
+	for_each_set_bit(loc, &mask, 32) {
+		netdev_err(ndev, "Found %s error in %s: '%s: %s'\n", corr ?
+				"correctable" : "uncorrectable", module_name,
+				desc[loc].desc, desc[loc].detailed_desc);
+
+		/* Update counters */
+		ptr[loc]++;
+	}
+}
+
+static const struct dwxgmac3_error_desc dwxgmac3_mac_errors[32]= {
+	{ true, "ATPES", "Application Transmit Interface Parity Check Error" },
+	{ true, "DPES", "Descriptor Cache Data Path Parity Check Error" },
+	{ true, "TPES", "TSO Data Path Parity Check Error" },
+	{ true, "TSOPES", "TSO Header Data Path Parity Check Error" },
+	{ true, "MTPES", "MTL Data Path Parity Check Error" },
+	{ true, "MTSPES", "MTL TX Status Data Path Parity Check Error" },
+	{ true, "MTBUPES", "MAC TBU Data Path Parity Check Error" },
+	{ true, "MTFCPES", "MAC TFC Data Path Parity Check Error" },
+	{ true, "ARPES", "Application Receive Interface Data Path Parity Check Error" },
+	{ true, "MRWCPES", "MTL RWC Data Path Parity Check Error" },
+	{ true, "MRRCPES", "MTL RCC Data Path Parity Check Error" },
+	{ true, "CWPES", "CSR Write Data Path Parity Check Error" },
+	{ true, "ASRPES", "AXI Slave Read Data Path Parity Check Error" },
+	{ true, "TTES", "TX FSM Timeout Error" },
+	{ true, "RTES", "RX FSM Timeout Error" },
+	{ true, "CTES", "CSR FSM Timeout Error" },
+	{ true, "ATES", "APP FSM Timeout Error" },
+	{ true, "PTES", "PTP FSM Timeout Error" },
+	{ false, "UNKNOWN", "Unknown Error" }, /* 18 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 19 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 20 */
+	{ true, "MSTTES", "Master Read/Write Timeout Error" },
+	{ true, "SLVTES", "Slave Read/Write Timeout Error" },
+	{ true, "ATITES", "Application Timeout on ATI Interface Error" },
+	{ true, "ARITES", "Application Timeout on ARI Interface Error" },
+	{ true, "FSMPES", "FSM State Parity Error" },
+	{ false, "UNKNOWN", "Unknown Error" }, /* 26 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 27 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 28 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 29 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 30 */
+	{ true, "CPI", "Control Register Parity Check Error" },
+};
+
+static void dwxgmac3_handle_mac_err(struct net_device *ndev,
+				    void __iomem *ioaddr, bool correctable,
+				    struct stmmac_safety_stats *stats)
+{
+	u32 value;
+
+	value = readl(ioaddr + XGMAC_MAC_DPP_FSM_INT_STATUS);
+	writel(value, ioaddr + XGMAC_MAC_DPP_FSM_INT_STATUS);
+
+	dwxgmac3_log_error(ndev, value, correctable, "MAC",
+			   dwxgmac3_mac_errors, STAT_OFF(mac_errors), stats);
+}
+
+static const struct dwxgmac3_error_desc dwxgmac3_mtl_errors[32]= {
+	{ true, "TXCES", "MTL TX Memory Error" },
+	{ true, "TXAMS", "MTL TX Memory Address Mismatch Error" },
+	{ true, "TXUES", "MTL TX Memory Error" },
+	{ false, "UNKNOWN", "Unknown Error" }, /* 3 */
+	{ true, "RXCES", "MTL RX Memory Error" },
+	{ true, "RXAMS", "MTL RX Memory Address Mismatch Error" },
+	{ true, "RXUES", "MTL RX Memory Error" },
+	{ false, "UNKNOWN", "Unknown Error" }, /* 7 */
+	{ true, "ECES", "MTL EST Memory Error" },
+	{ true, "EAMS", "MTL EST Memory Address Mismatch Error" },
+	{ true, "EUES", "MTL EST Memory Error" },
+	{ false, "UNKNOWN", "Unknown Error" }, /* 11 */
+	{ true, "RPCES", "MTL RX Parser Memory Error" },
+	{ true, "RPAMS", "MTL RX Parser Memory Address Mismatch Error" },
+	{ true, "RPUES", "MTL RX Parser Memory Error" },
+	{ false, "UNKNOWN", "Unknown Error" }, /* 15 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 16 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 17 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 18 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 19 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 20 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 21 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 22 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 23 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 24 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 25 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 26 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 27 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 28 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 29 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 30 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 31 */
+};
+
+static void dwxgmac3_handle_mtl_err(struct net_device *ndev,
+				    void __iomem *ioaddr, bool correctable,
+				    struct stmmac_safety_stats *stats)
+{
+	u32 value;
+
+	value = readl(ioaddr + XGMAC_MTL_ECC_INT_STATUS);
+	writel(value, ioaddr + XGMAC_MTL_ECC_INT_STATUS);
+
+	dwxgmac3_log_error(ndev, value, correctable, "MTL",
+			   dwxgmac3_mtl_errors, STAT_OFF(mtl_errors), stats);
+}
+
+static const struct dwxgmac3_error_desc dwxgmac3_dma_errors[32]= {
+	{ true, "TCES", "DMA TSO Memory Error" },
+	{ true, "TAMS", "DMA TSO Memory Address Mismatch Error" },
+	{ true, "TUES", "DMA TSO Memory Error" },
+	{ false, "UNKNOWN", "Unknown Error" }, /* 3 */
+	{ true, "DCES", "DMA DCACHE Memory Error" },
+	{ true, "DAMS", "DMA DCACHE Address Mismatch Error" },
+	{ true, "DUES", "DMA DCACHE Memory Error" },
+	{ false, "UNKNOWN", "Unknown Error" }, /* 7 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 8 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 9 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 10 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 11 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 12 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 13 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 14 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 15 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 16 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 17 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 18 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 19 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 20 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 21 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 22 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 23 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 24 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 25 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 26 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 27 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 28 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 29 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 30 */
+	{ false, "UNKNOWN", "Unknown Error" }, /* 31 */
+};
+
+static void dwxgmac3_handle_dma_err(struct net_device *ndev,
+				    void __iomem *ioaddr, bool correctable,
+				    struct stmmac_safety_stats *stats)
+{
+	u32 value;
+
+	value = readl(ioaddr + XGMAC_DMA_ECC_INT_STATUS);
+	writel(value, ioaddr + XGMAC_DMA_ECC_INT_STATUS);
+
+	dwxgmac3_log_error(ndev, value, correctable, "DMA",
+			   dwxgmac3_dma_errors, STAT_OFF(dma_errors), stats);
+}
+
+static int dwxgmac3_safety_feat_config(void __iomem *ioaddr, unsigned int asp)
+{
+	u32 value;
+
+	if (!asp)
+		return -EINVAL;
+
+	/* 1. Enable Safety Features */
+	writel(0x0, ioaddr + XGMAC_MTL_ECC_CONTROL);
+
+	/* 2. Enable MTL Safety Interrupts */
+	value = readl(ioaddr + XGMAC_MTL_ECC_INT_ENABLE);
+	value |= XGMAC_RPCEIE; /* RX Parser Memory Correctable Error */
+	value |= XGMAC_ECEIE; /* EST Memory Correctable Error */
+	value |= XGMAC_RXCEIE; /* RX Memory Correctable Error */
+	value |= XGMAC_TXCEIE; /* TX Memory Correctable Error */
+	writel(value, ioaddr + XGMAC_MTL_ECC_INT_ENABLE);
+
+	/* 3. Enable DMA Safety Interrupts */
+	value = readl(ioaddr + XGMAC_DMA_ECC_INT_ENABLE);
+	value |= XGMAC_DCEIE; /* Descriptor Cache Memory Correctable Error */
+	value |= XGMAC_TCEIE; /* TSO Memory Correctable Error */
+	writel(value, ioaddr + XGMAC_DMA_ECC_INT_ENABLE);
+
+	/* Only ECC Protection for External Memory feature is selected */
+	if (asp <= 0x1)
+		return 0;
+
+	/* 4. Enable Parity and Timeout for FSM */
+	value = readl(ioaddr + XGMAC_MAC_FSM_CONTROL);
+	value |= XGMAC_PRTYEN; /* FSM Parity Feature */
+	value |= XGMAC_TMOUTEN; /* FSM Timeout Feature */
+	writel(value, ioaddr + XGMAC_MAC_FSM_CONTROL);
+
+	return 0;
+}
+
+static int dwxgmac3_safety_feat_irq_status(struct net_device *ndev,
+					   void __iomem *ioaddr,
+					   unsigned int asp,
+					   struct stmmac_safety_stats *stats)
+{
+	bool err, corr;
+	u32 mtl, dma;
+	int ret = 0;
+
+	if (!asp)
+		return -EINVAL;
+
+	mtl = readl(ioaddr + XGMAC_MTL_SAFETY_INT_STATUS);
+	dma = readl(ioaddr + XGMAC_DMA_SAFETY_INT_STATUS);
+
+	err = (mtl & XGMAC_MCSIS) || (dma & XGMAC_MCSIS);
+	corr = false;
+	if (err) {
+		dwxgmac3_handle_mac_err(ndev, ioaddr, corr, stats);
+		ret |= !corr;
+	}
+
+	err = (mtl & (XGMAC_MEUIS | XGMAC_MECIS)) ||
+	      (dma & (XGMAC_MSUIS | XGMAC_MSCIS));
+	corr = (mtl & XGMAC_MECIS) || (dma & XGMAC_MSCIS);
+	if (err) {
+		dwxgmac3_handle_mtl_err(ndev, ioaddr, corr, stats);
+		ret |= !corr;
+	}
+
+	err = dma & (XGMAC_DEUIS | XGMAC_DECIS);
+	corr = dma & XGMAC_DECIS;
+	if (err) {
+		dwxgmac3_handle_dma_err(ndev, ioaddr, corr, stats);
+		ret |= !corr;
+	}
+
+	return ret;
+}
+
+static const struct dwxgmac3_error {
+	const struct dwxgmac3_error_desc *desc;
+} dwxgmac3_all_errors[] = {
+	{ dwxgmac3_mac_errors },
+	{ dwxgmac3_mtl_errors },
+	{ dwxgmac3_dma_errors },
+};
+
+static int dwxgmac3_safety_feat_dump(struct stmmac_safety_stats *stats,
+				     int index, unsigned long *count,
+				     const char **desc)
+{
+	int module = index / 32, offset = index % 32;
+	unsigned long *ptr = (unsigned long *)stats;
+
+	if (module >= ARRAY_SIZE(dwxgmac3_all_errors))
+		return -EINVAL;
+	if (!dwxgmac3_all_errors[module].desc[offset].valid)
+		return -EINVAL;
+	if (count)
+		*count = *(ptr + index);
+	if (desc)
+		*desc = dwxgmac3_all_errors[module].desc[offset].desc;
+	return 0;
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
 	.core_init = dwxgmac2_core_init,
 	.set_mac = dwxgmac2_set_mac,
@@ -559,6 +837,9 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.pcs_get_adv_lp = NULL,
 	.debug = NULL,
 	.set_filter = dwxgmac2_set_filter,
+	.safety_feat_config = dwxgmac3_safety_feat_config,
+	.safety_feat_irq_status = dwxgmac3_safety_feat_irq_status,
+	.safety_feat_dump = dwxgmac3_safety_feat_dump,
 	.set_mac_loopback = dwxgmac2_set_mac_loopback,
 	.rss_configure = dwxgmac2_rss_configure,
 	.update_vlan_hash = dwxgmac2_update_vlan_hash,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index b50e275e76c2..e4a1c877f2e1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -399,6 +399,10 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 		((hw_cap & XGMAC_HWFEAT_TXQCNT) >> 6) + 1;
 	dma_cap->number_rx_queues =
 		((hw_cap & XGMAC_HWFEAT_RXQCNT) >> 0) + 1;
+
+	/* MAC HW feature 3 */
+	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE3);
+	dma_cap->asp = (hw_cap & XGMAC_HWFEAT_ASP) >> 14;
 }
 
 static void dwxgmac2_rx_watchdog(void __iomem *ioaddr, u32 riwt, u32 nchan)
-- 
2.7.4

[PATCH net-next 11/26] net: stmmac: Add Flexible RX Parser support in XGMAC

[Jose Abreu]

XGMAC cores also support the Flexible RX Parser feature. Add the support
for it in the XGMAC core.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     |  13 ++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 190 +++++++++++++++++++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c |   3 +
 3 files changed, 206 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 3d8782f99f64..01bd20ab34a5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -112,6 +112,9 @@
 #define XGMAC_HWFEAT_RXQCNT		GENMASK(3, 0)
 #define XGMAC_HW_FEATURE3		0x00000128
 #define XGMAC_HWFEAT_ASP		GENMASK(15, 14)
+#define XGMAC_HWFEAT_FRPES		GENMASK(12, 11)
+#define XGMAC_HWFEAT_FRPPB		GENMASK(10, 9)
+#define XGMAC_HWFEAT_FRPSEL		BIT(3)
 #define XGMAC_MAC_DPP_FSM_INT_STATUS	0x00000150
 #define XGMAC_MAC_FSM_CONTROL		0x00000158
 #define XGMAC_PRTYEN			BIT(1)
@@ -145,6 +148,7 @@
 
 /* MTL Registers */
 #define XGMAC_MTL_OPMODE		0x00001000
+#define XGMAC_FRPE			BIT(15)
 #define XGMAC_ETSALG			GENMASK(6, 5)
 #define XGMAC_WRR			(0x0 << 5)
 #define XGMAC_WFQ			(0x1 << 5)
@@ -160,6 +164,15 @@
 #define XGMAC_TC_PRTY_MAP1		0x00001044
 #define XGMAC_PSTC(x)			GENMASK((x) * 8 + 7, (x) * 8)
 #define XGMAC_PSTC_SHIFT(x)		((x) * 8)
+#define XGMAC_MTL_RXP_CONTROL_STATUS	0x000010a0
+#define XGMAC_RXPI			BIT(31)
+#define XGMAC_NPE			GENMASK(23, 16)
+#define XGMAC_NVE			GENMASK(7, 0)
+#define XGMAC_MTL_RXP_IACC_CTRL_ST	0x000010b0
+#define XGMAC_STARTBUSY			BIT(31)
+#define XGMAC_WRRDN			BIT(16)
+#define XGMAC_ADDR			GENMASK(9, 0)
+#define XGMAC_MTL_RXP_IACC_DATA		0x000010b4
 #define XGMAC_MTL_ECC_CONTROL		0x000010c0
 #define XGMAC_MTL_SAFETY_INT_STATUS	0x000010c4
 #define XGMAC_MEUIS			BIT(1)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 19dfb72cab11..767f3fe5efaa 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -808,6 +808,195 @@ static int dwxgmac3_safety_feat_dump(struct stmmac_safety_stats *stats,
 	return 0;
 }
 
+static int dwxgmac3_rxp_disable(void __iomem *ioaddr)
+{
+	u32 val = readl(ioaddr + XGMAC_MTL_OPMODE);
+
+	val &= ~XGMAC_FRPE;
+	writel(val, ioaddr + XGMAC_MTL_OPMODE);
+
+	return 0;
+}
+
+static void dwxgmac3_rxp_enable(void __iomem *ioaddr)
+{
+	u32 val;
+
+	val = readl(ioaddr + XGMAC_MTL_OPMODE);
+	val |= XGMAC_FRPE;
+	writel(val, ioaddr + XGMAC_MTL_OPMODE);
+}
+
+static int dwxgmac3_rxp_update_single_entry(void __iomem *ioaddr,
+					    struct stmmac_tc_entry *entry,
+					    int pos)
+{
+	int ret, i;
+
+	for (i = 0; i < (sizeof(entry->val) / sizeof(u32)); i++) {
+		int real_pos = pos * (sizeof(entry->val) / sizeof(u32)) + i;
+		u32 val;
+
+		/* Wait for ready */
+		ret = readl_poll_timeout(ioaddr + XGMAC_MTL_RXP_IACC_CTRL_ST,
+					 val, !(val & XGMAC_STARTBUSY), 1, 10000);
+		if (ret)
+			return ret;
+
+		/* Write data */
+		val = *((u32 *)&entry->val + i);
+		writel(val, ioaddr + XGMAC_MTL_RXP_IACC_DATA);
+
+		/* Write pos */
+		val = real_pos & XGMAC_ADDR;
+		writel(val, ioaddr + XGMAC_MTL_RXP_IACC_CTRL_ST);
+
+		/* Write OP */
+		val |= XGMAC_WRRDN;
+		writel(val, ioaddr + XGMAC_MTL_RXP_IACC_CTRL_ST);
+
+		/* Start Write */
+		val |= XGMAC_STARTBUSY;
+		writel(val, ioaddr + XGMAC_MTL_RXP_IACC_CTRL_ST);
+
+		/* Wait for done */
+		ret = readl_poll_timeout(ioaddr + XGMAC_MTL_RXP_IACC_CTRL_ST,
+					 val, !(val & XGMAC_STARTBUSY), 1, 10000);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static struct stmmac_tc_entry *
+dwxgmac3_rxp_get_next_entry(struct stmmac_tc_entry *entries,
+			    unsigned int count, u32 curr_prio)
+{
+	struct stmmac_tc_entry *entry;
+	u32 min_prio = ~0x0;
+	int i, min_prio_idx;
+	bool found = false;
+
+	for (i = count - 1; i >= 0; i--) {
+		entry = &entries[i];
+
+		/* Do not update unused entries */
+		if (!entry->in_use)
+			continue;
+		/* Do not update already updated entries (i.e. fragments) */
+		if (entry->in_hw)
+			continue;
+		/* Let last entry be updated last */
+		if (entry->is_last)
+			continue;
+		/* Do not return fragments */
+		if (entry->is_frag)
+			continue;
+		/* Check if we already checked this prio */
+		if (entry->prio < curr_prio)
+			continue;
+		/* Check if this is the minimum prio */
+		if (entry->prio < min_prio) {
+			min_prio = entry->prio;
+			min_prio_idx = i;
+			found = true;
+		}
+	}
+
+	if (found)
+		return &entries[min_prio_idx];
+	return NULL;
+}
+
+static int dwxgmac3_rxp_config(void __iomem *ioaddr,
+			       struct stmmac_tc_entry *entries,
+			       unsigned int count)
+{
+	struct stmmac_tc_entry *entry, *frag;
+	int i, ret, nve = 0;
+	u32 curr_prio = 0;
+	u32 old_val, val;
+
+	/* Force disable RX */
+	old_val = readl(ioaddr + XGMAC_RX_CONFIG);
+	val = old_val & ~XGMAC_CONFIG_RE;
+	writel(val, ioaddr + XGMAC_RX_CONFIG);
+
+	/* Disable RX Parser */
+	ret = dwxgmac3_rxp_disable(ioaddr);
+	if (ret)
+		goto re_enable;
+
+	/* Set all entries as NOT in HW */
+	for (i = 0; i < count; i++) {
+		entry = &entries[i];
+		entry->in_hw = false;
+	}
+
+	/* Update entries by reverse order */
+	while (1) {
+		entry = dwxgmac3_rxp_get_next_entry(entries, count, curr_prio);
+		if (!entry)
+			break;
+
+		curr_prio = entry->prio;
+		frag = entry->frag_ptr;
+
+		/* Set special fragment requirements */
+		if (frag) {
+			entry->val.af = 0;
+			entry->val.rf = 0;
+			entry->val.nc = 1;
+			entry->val.ok_index = nve + 2;
+		}
+
+		ret = dwxgmac3_rxp_update_single_entry(ioaddr, entry, nve);
+		if (ret)
+			goto re_enable;
+
+		entry->table_pos = nve++;
+		entry->in_hw = true;
+
+		if (frag && !frag->in_hw) {
+			ret = dwxgmac3_rxp_update_single_entry(ioaddr, frag, nve);
+			if (ret)
+				goto re_enable;
+			frag->table_pos = nve++;
+			frag->in_hw = true;
+		}
+	}
+
+	if (!nve)
+		goto re_enable;
+
+	/* Update all pass entry */
+	for (i = 0; i < count; i++) {
+		entry = &entries[i];
+		if (!entry->is_last)
+			continue;
+
+		ret = dwxgmac3_rxp_update_single_entry(ioaddr, entry, nve);
+		if (ret)
+			goto re_enable;
+
+		entry->table_pos = nve++;
+	}
+
+	/* Assume n. of parsable entries == n. of valid entries */
+	val = (nve << 16) & XGMAC_NPE;
+	val |= nve & XGMAC_NVE;
+	writel(val, ioaddr + XGMAC_MTL_RXP_CONTROL_STATUS);
+
+	/* Enable RX Parser */
+	dwxgmac3_rxp_enable(ioaddr);
+
+re_enable:
+	/* Re-enable RX */
+	writel(old_val, ioaddr + XGMAC_RX_CONFIG);
+	return ret;
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
 	.core_init = dwxgmac2_core_init,
 	.set_mac = dwxgmac2_set_mac,
@@ -843,6 +1032,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.set_mac_loopback = dwxgmac2_set_mac_loopback,
 	.rss_configure = dwxgmac2_rss_configure,
 	.update_vlan_hash = dwxgmac2_update_vlan_hash,
+	.rxp_config = dwxgmac3_rxp_config,
 };
 
 int dwxgmac2_setup(struct stmmac_priv *priv)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index e4a1c877f2e1..18cbf4ab4ad2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -403,6 +403,9 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	/* MAC HW feature 3 */
 	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE3);
 	dma_cap->asp = (hw_cap & XGMAC_HWFEAT_ASP) >> 14;
+	dma_cap->frpes = (hw_cap & XGMAC_HWFEAT_FRPES) >> 11;
+	dma_cap->frpbs = (hw_cap & XGMAC_HWFEAT_FRPPB) >> 9;
+	dma_cap->frpsel = (hw_cap & XGMAC_HWFEAT_FRPSEL) >> 3;
 }
 
 static void dwxgmac2_rx_watchdog(void __iomem *ioaddr, u32 riwt, u32 nchan)
-- 
2.7.4

[PATCH net-next 12/26] net: stmmac: tc: Do not return a fragment entry

[Jose Abreu]

Do not try to return a fragment entry from TC list. Otherwise we may not
clean properly allocated entries.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 58ea18af9813..37c0bc699cd9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -37,7 +37,7 @@ static struct stmmac_tc_entry *tc_find_entry(struct stmmac_priv *priv,
 		entry = &priv->tc_entries[i];
 		if (!entry->in_use && !first && free)
 			first = entry;
-		if (entry->handle == loc && !free)
+		if ((entry->handle == loc) && !free && !entry->is_frag)
 			dup = entry;
 	}
 
-- 
2.7.4

[PATCH net-next 13/26] net: stmmac: selftests: Add a selftest for Flexible RX Parser

[Jose Abreu]

Add a selftest for the Flexible RX Parser feature.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 98 +++++++++++++++++++++-
 1 file changed, 97 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index 6b08bb15af15..abab84f2ef8b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -11,8 +11,10 @@
 #include <linux/ip.h>
 #include <linux/phy.h>
 #include <linux/udp.h>
+#include <net/pkt_cls.h>
 #include <net/tcp.h>
 #include <net/udp.h>
+#include <net/tc_act/tc_gact.h>
 #include "stmmac.h"
 
 struct stmmachdr {
@@ -229,7 +231,7 @@ static int stmmac_test_loopback_validate(struct sk_buff *skb,
 			goto out;
 	}
 	if (tpriv->packet->src) {
-		if (!ether_addr_equal(ehdr->h_source, orig_ndev->dev_addr))
+		if (!ether_addr_equal(ehdr->h_source, tpriv->packet->src))
 			goto out;
 	}
 
@@ -912,6 +914,96 @@ static int stmmac_test_dvlanfilt(struct stmmac_priv *priv)
 	return ret;
 }
 
+#ifdef CONFIG_NET_CLS_ACT
+static int stmmac_test_rxp(struct stmmac_priv *priv)
+{
+	unsigned char addr[ETH_ALEN] = {0xde, 0xad, 0xbe, 0xef, 0x00, 0x00};
+	struct tc_cls_u32_offload cls_u32 = { };
+	struct stmmac_packet_attrs attr = { };
+	struct tc_action **actions, *act;
+	struct tc_u32_sel *sel;
+	struct tcf_exts *exts;
+	int ret, i, nk = 1;
+
+	if (!tc_can_offload(priv->dev))
+		return -EOPNOTSUPP;
+	if (!priv->dma_cap.frpsel)
+		return -EOPNOTSUPP;
+
+	sel = kzalloc(sizeof(*sel) + nk * sizeof(struct tc_u32_key), GFP_KERNEL);
+	if (!sel)
+		return -ENOMEM;
+
+	exts = kzalloc(sizeof(*exts), GFP_KERNEL);
+	if (!exts) {
+		ret = -ENOMEM;
+		goto cleanup_sel;
+	}
+
+	actions = kzalloc(nk * sizeof(*actions), GFP_KERNEL);
+	if (!actions) {
+		ret = -ENOMEM;
+		goto cleanup_exts;
+	}
+
+	act = kzalloc(nk * sizeof(*act), GFP_KERNEL);
+	if (!act) {
+		ret = -ENOMEM;
+		goto cleanup_actions;
+	}
+
+	cls_u32.command = TC_CLSU32_NEW_KNODE;
+	cls_u32.common.chain_index = 0;
+	cls_u32.common.protocol = htons(ETH_P_ALL);
+	cls_u32.knode.exts = exts;
+	cls_u32.knode.sel = sel;
+	cls_u32.knode.handle = 0x123;
+
+	exts->nr_actions = nk;
+	exts->actions = actions;
+	for (i = 0; i < nk; i++) {
+		struct tcf_gact *gact = to_gact(&act[i]);
+
+		actions[i] = &act[i];
+		gact->tcf_action = TC_ACT_SHOT;
+	}
+
+	sel->nkeys = nk;
+	sel->offshift = 0;
+	sel->keys[0].off = 6;
+	sel->keys[0].val = htonl(0xdeadbeef);
+	sel->keys[0].mask = ~0x0;
+
+	ret = stmmac_tc_setup_cls_u32(priv, priv, &cls_u32);
+	if (ret)
+		goto cleanup_act;
+
+	attr.dst = priv->dev->dev_addr;
+	attr.src = addr;
+
+	ret = __stmmac_test_loopback(priv, &attr);
+	ret = !ret; /* Shall NOT receive packet */
+
+	cls_u32.command = TC_CLSU32_DELETE_KNODE;
+	stmmac_tc_setup_cls_u32(priv, priv, &cls_u32);
+
+cleanup_act:
+	kfree(act);
+cleanup_actions:
+	kfree(actions);
+cleanup_exts:
+	kfree(exts);
+cleanup_sel:
+	kfree(sel);
+	return ret;
+}
+#else
+static int stmmac_test_rxp(struct stmmac_priv *priv)
+{
+	return -EOPNOTSUPP;
+}
+#endif
+
 #define STMMAC_LOOPBACK_NONE	0
 #define STMMAC_LOOPBACK_MAC	1
 #define STMMAC_LOOPBACK_PHY	2
@@ -969,6 +1061,10 @@ static const struct stmmac_test {
 		.name = "Double VLAN Filtering",
 		.lb = STMMAC_LOOPBACK_PHY,
 		.fn = stmmac_test_dvlanfilt,
+	}, {
+		.name = "Flexible RX Parser   ",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_rxp,
 	},
 };
 
-- 
2.7.4

[PATCH net-next 14/26] net: stmmac: Get correct timestamp values from XGMAC

[Jose Abreu]

TX Timestamp in XGMAC comes from MAC instead of descriptors. Implement
this in a new callback.

Also, RX Timestamp in XGMAC must be cheked against corruption and we need
a barrier to make sure that descriptor fields are read correctly.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 22 ++++++++++++++++++++++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_descs.c   | 18 +++++++++++-------
 drivers/net/ethernet/stmicro/stmmac/hwif.h         |  4 ++++
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |  9 ++++++---
 4 files changed, 43 insertions(+), 10 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 767f3fe5efaa..1161287d3a62 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -997,6 +997,27 @@ static int dwxgmac3_rxp_config(void __iomem *ioaddr,
 	return ret;
 }
 
+static int dwxgmac2_get_mac_tx_timestamp(struct mac_device_info *hw, u64 *ts)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	int count = 0;
+	u32 value;
+
+	do {
+		if (readl_poll_timeout_atomic(ioaddr + XGMAC_TIMESTAMP_STATUS,
+					      value, value & XGMAC_TXTSC,
+					      100, 10000))
+			break;
+
+		*ts = readl(ioaddr + XGMAC_TXTIMESTAMP_NSEC) & XGMAC_TXTSSTSLO;
+		*ts += readl(ioaddr + XGMAC_TXTIMESTAMP_SEC) * 1000000000ULL;
+	} while (count++);
+
+	if (count)
+		return 0;
+	return -EBUSY;
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
 	.core_init = dwxgmac2_core_init,
 	.set_mac = dwxgmac2_set_mac,
@@ -1033,6 +1054,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.rss_configure = dwxgmac2_rss_configure,
 	.update_vlan_hash = dwxgmac2_update_vlan_hash,
 	.rxp_config = dwxgmac3_rxp_config,
+	.get_mac_tx_timestamp = dwxgmac2_get_mac_tx_timestamp,
 };
 
 int dwxgmac2_setup(struct stmmac_priv *priv)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
index 9ff9d9ac1a50..d70a90c12dbc 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
@@ -98,11 +98,17 @@ static int dwxgmac2_rx_check_timestamp(void *desc)
 	unsigned int rdes3 = le32_to_cpu(p->des3);
 	bool desc_valid, ts_valid;
 
+	dma_rmb();
+
 	desc_valid = !(rdes3 & XGMAC_RDES3_OWN) && (rdes3 & XGMAC_RDES3_CTXT);
 	ts_valid = !(rdes3 & XGMAC_RDES3_TSD) && (rdes3 & XGMAC_RDES3_TSA);
 
-	if (likely(desc_valid && ts_valid))
+	if (likely(desc_valid && ts_valid)) {
+		if ((p->des0 == 0xffffffff) && (p->des1 == 0xffffffff))
+			return -EINVAL;
 		return 0;
+	}
+
 	return -EINVAL;
 }
 
@@ -113,13 +119,11 @@ static int dwxgmac2_get_rx_timestamp_status(void *desc, void *next_desc,
 	unsigned int rdes3 = le32_to_cpu(p->des3);
 	int ret = -EBUSY;
 
-	if (likely(rdes3 & XGMAC_RDES3_CDA)) {
+	if (likely(rdes3 & XGMAC_RDES3_CDA))
 		ret = dwxgmac2_rx_check_timestamp(next_desc);
-		if (ret)
-			return ret;
-	}
-
-	return ret;
+	if (!ret)
+		return 1;
+	return 0;
 }
 
 static void dwxgmac2_init_rx_desc(struct dma_desc *p, int disable_rx_ic,
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 52fc2344b066..7e1523c6f456 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -339,6 +339,8 @@ struct stmmac_ops {
 	/* VLAN */
 	void (*update_vlan_hash)(struct mac_device_info *hw, u32 hash,
 				 bool is_double);
+	/* TX Timestamp */
+	int (*get_mac_tx_timestamp)(struct mac_device_info *hw, u64 *ts);
 };
 
 #define stmmac_core_init(__priv, __args...) \
@@ -413,6 +415,8 @@ struct stmmac_ops {
 	stmmac_do_callback(__priv, mac, rss_configure, __args)
 #define stmmac_update_vlan_hash(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, update_vlan_hash, __args)
+#define stmmac_get_mac_tx_timestamp(__priv, __args...) \
+	stmmac_do_callback(__priv, mac, get_mac_tx_timestamp, __args)
 
 /* PTP and HW Timer helpers */
 struct stmmac_hwtimestamp {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 5ac86d6a8e40..075de483ce7b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -432,6 +432,7 @@ static void stmmac_get_tx_hwtstamp(struct stmmac_priv *priv,
 				   struct dma_desc *p, struct sk_buff *skb)
 {
 	struct skb_shared_hwtstamps shhwtstamp;
+	bool found = false;
 	u64 ns = 0;
 
 	if (!priv->hwts_tx_en)
@@ -443,9 +444,13 @@ static void stmmac_get_tx_hwtstamp(struct stmmac_priv *priv,
 
 	/* check tx tstamp status */
 	if (stmmac_get_tx_timestamp_status(priv, p)) {
-		/* get the valid tstamp */
 		stmmac_get_timestamp(priv, p, priv->adv_ts, &ns);
+		found = true;
+	} else if (!stmmac_get_mac_tx_timestamp(priv, priv->hw, &ns)) {
+		found = true;
+	}
 
+	if (found) {
 		memset(&shhwtstamp, 0, sizeof(struct skb_shared_hwtstamps));
 		shhwtstamp.hwtstamp = ns_to_ktime(ns);
 
@@ -453,8 +458,6 @@ static void stmmac_get_tx_hwtstamp(struct stmmac_priv *priv,
 		/* pass tstamp to stack */
 		skb_tstamp_tx(skb, &shhwtstamp);
 	}
-
-	return;
 }
 
 /* stmmac_get_rx_hwtstamp - get HW RX timestamps
-- 
2.7.4

[PATCH net-next 15/26] net: stmmac: Prepare to add Split Header support

[Jose Abreu]

In order to add Split Header support, stmmac_rx() needs to take into
account that packet may be split accross multiple descriptors.

Refactor the logic of this function in order to support this scenario.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/stmmac.h      |   6 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 149 +++++++++++++---------
 2 files changed, 95 insertions(+), 60 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 4179559b11ad..be9ee3d7ec35 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -74,6 +74,12 @@ struct stmmac_rx_queue {
 	u32 rx_zeroc_thresh;
 	dma_addr_t dma_rx_phy;
 	u32 rx_tail_addr;
+	unsigned int state_saved;
+	struct {
+		struct sk_buff *skb;
+		unsigned int len;
+		unsigned int error;
+	} state;
 };
 
 struct stmmac_channel {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 075de483ce7b..e1ef8de952cc 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3359,9 +3359,10 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 {
 	struct stmmac_rx_queue *rx_q = &priv->rx_queue[queue];
 	struct stmmac_channel *ch = &priv->channel[queue];
+	unsigned int count = 0, error = 0, len = 0;
+	int status = 0, coe = priv->hw->rx_csum;
 	unsigned int next_entry = rx_q->cur_rx;
-	int coe = priv->hw->rx_csum;
-	unsigned int count = 0;
+	struct sk_buff *skb = NULL;
 
 	if (netif_msg_rx_status(priv)) {
 		void *rx_head;
@@ -3375,9 +3376,27 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 		stmmac_display_ring(priv, rx_head, DMA_RX_SIZE, true);
 	}
 	while (count < limit) {
+		enum pkt_hash_types hash_type;
 		struct stmmac_rx_buffer *buf;
+		unsigned int prev_len = 0;
 		struct dma_desc *np, *p;
-		int entry, status;
+		int entry;
+		u32 hash;
+
+		if (!count && rx_q->state_saved) {
+			skb = rx_q->state.skb;
+			error = rx_q->state.error;
+			len = rx_q->state.len;
+		} else {
+			rx_q->state_saved = false;
+			skb = NULL;
+			error = 0;
+			len = 0;
+		}
+
+read_again:
+		if (count >= limit)
+			break;
 
 		entry = next_entry;
 		buf = &rx_q->buf_pool[entry];
@@ -3413,28 +3432,24 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 			page_pool_recycle_direct(rx_q->page_pool, buf->page);
 			priv->dev->stats.rx_errors++;
 			buf->page = NULL;
+			error = 1;
+		}
+
+		if (unlikely(error & (status & rx_not_ls)))
+			goto read_again;
+		if (unlikely(error)) {
+			if (skb)
+				dev_kfree_skb(skb);
+			continue;
+		}
+
+		/* Buffer is good. Go on. */
+
+		if (likely(status & rx_not_ls)) {
+			len += priv->dma_buf_sz;
 		} else {
-			enum pkt_hash_types hash_type;
-			struct sk_buff *skb;
-			unsigned int des;
-			int frame_len;
-			u32 hash;
-
-			stmmac_get_desc_addr(priv, p, &des);
-			frame_len = stmmac_get_rx_frame_len(priv, p, coe);
-
-			/*  If frame length is greater than skb buffer size
-			 *  (preallocated during init) then the packet is
-			 *  ignored
-			 */
-			if (frame_len > priv->dma_buf_sz) {
-				if (net_ratelimit())
-					netdev_err(priv->dev,
-						   "len %d larger than size (%d)\n",
-						   frame_len, priv->dma_buf_sz);
-				priv->dev->stats.rx_length_errors++;
-				continue;
-			}
+			prev_len = len;
+			len = stmmac_get_rx_frame_len(priv, p, coe);
 
 			/* ACS is set; GMAC core strips PAD/FCS for IEEE 802.3
 			 * Type frames (LLC/LLC-SNAP)
@@ -3445,57 +3460,71 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 			 */
 			if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00) ||
 			    unlikely(status != llc_snap))
-				frame_len -= ETH_FCS_LEN;
-
-			if (netif_msg_rx_status(priv)) {
-				netdev_dbg(priv->dev, "\tdesc: %p [entry %d] buff=0x%x\n",
-					   p, entry, des);
-				netdev_dbg(priv->dev, "frame size %d, COE: %d\n",
-					   frame_len, status);
-			}
+				len -= ETH_FCS_LEN;
+		}
 
-			skb = netdev_alloc_skb_ip_align(priv->dev, frame_len);
-			if (unlikely(!skb)) {
+		if (!skb) {
+			skb = netdev_alloc_skb_ip_align(priv->dev, len);
+			if (!skb) {
 				priv->dev->stats.rx_dropped++;
 				continue;
 			}
 
-			dma_sync_single_for_cpu(priv->device, buf->addr,
-						frame_len, DMA_FROM_DEVICE);
+			dma_sync_single_for_cpu(priv->device, buf->addr, len,
+						DMA_FROM_DEVICE);
 			skb_copy_to_linear_data(skb, page_address(buf->page),
-						frame_len);
-			skb_put(skb, frame_len);
+						len);
+			skb_put(skb, len);
 
-			if (netif_msg_pktdata(priv)) {
-				netdev_dbg(priv->dev, "frame received (%dbytes)",
-					   frame_len);
-				print_pkt(skb->data, frame_len);
-			}
+			/* Data payload copied into SKB, page ready for recycle */
+			page_pool_recycle_direct(rx_q->page_pool, buf->page);
+			buf->page = NULL;
+		} else {
+			unsigned int buf_len = len - prev_len;
 
-			stmmac_get_rx_hwtstamp(priv, p, np, skb);
+			if (likely(status & rx_not_ls))
+				buf_len = priv->dma_buf_sz;
 
-			stmmac_rx_vlan(priv->dev, skb);
+			dma_sync_single_for_cpu(priv->device, buf->addr,
+						buf_len, DMA_FROM_DEVICE);
+			skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
+					buf->page, 0, buf_len,
+					priv->dma_buf_sz);
 
-			skb->protocol = eth_type_trans(skb, priv->dev);
+			/* Data payload appended into SKB */
+			page_pool_release_page(rx_q->page_pool, buf->page);
+			buf->page = NULL;
+		}
 
-			if (unlikely(!coe))
-				skb_checksum_none_assert(skb);
-			else
-				skb->ip_summed = CHECKSUM_UNNECESSARY;
+		if (likely(status & rx_not_ls))
+			goto read_again;
 
-			if (!stmmac_get_rx_hash(priv, p, &hash, &hash_type))
-				skb_set_hash(skb, hash, hash_type);
+		/* Got entire packet into SKB. Finish it. */
 
-			skb_record_rx_queue(skb, queue);
-			napi_gro_receive(&ch->rx_napi, skb);
+		stmmac_get_rx_hwtstamp(priv, p, np, skb);
+		stmmac_rx_vlan(priv->dev, skb);
+		skb->protocol = eth_type_trans(skb, priv->dev);
 
-			/* Data payload copied into SKB, page ready for recycle */
-			page_pool_recycle_direct(rx_q->page_pool, buf->page);
-			buf->page = NULL;
+		if (unlikely(!coe))
+			skb_checksum_none_assert(skb);
+		else
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
 
-			priv->dev->stats.rx_packets++;
-			priv->dev->stats.rx_bytes += frame_len;
-		}
+		if (!stmmac_get_rx_hash(priv, p, &hash, &hash_type))
+			skb_set_hash(skb, hash, hash_type);
+
+		skb_record_rx_queue(skb, queue);
+		napi_gro_receive(&ch->rx_napi, skb);
+
+		priv->dev->stats.rx_packets++;
+		priv->dev->stats.rx_bytes += len;
+	}
+
+	if (status & rx_not_ls) {
+		rx_q->state_saved = true;
+		rx_q->state.skb = skb;
+		rx_q->state.error = error;
+		rx_q->state.len = len;
 	}
 
 	stmmac_rx_refill(priv, queue);
-- 
2.7.4

[PATCH net-next 16/26] net: stmmac: xgmac: Correctly return that RX descriptor is not last one

[Jose Abreu]

Return the correct value when RX descriptor is not the last one.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
index d70a90c12dbc..bae8bd41a769 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
@@ -26,16 +26,15 @@ static int dwxgmac2_get_rx_status(void *data, struct stmmac_extra_stats *x,
 				  struct dma_desc *p)
 {
 	unsigned int rdes3 = le32_to_cpu(p->des3);
-	int ret = good_frame;
 
 	if (unlikely(rdes3 & XGMAC_RDES3_OWN))
 		return dma_own;
 	if (likely(!(rdes3 & XGMAC_RDES3_LD)))
+		return rx_not_ls;
+	if (unlikely((rdes3 & XGMAC_RDES3_ES) && (rdes3 & XGMAC_RDES3_LD)))
 		return discard_frame;
-	if (unlikely(rdes3 & XGMAC_RDES3_ES))
-		ret = discard_frame;
 
-	return ret;
+	return good_frame;
 }
 
 static int dwxgmac2_get_tx_len(struct dma_desc *p)
-- 
2.7.4

[PATCH net-next 17/26] net: stmmac: Add Split Header support and enable it in XGMAC cores

[Jose Abreu]

Add the support for Split Header feature in the RX path and enable it in
XGMAC cores.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/common.h       |  1 +
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     |  6 ++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_descs.c   | 18 +++++-
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 18 ++++++
 drivers/net/ethernet/stmicro/stmmac/hwif.h         |  9 +++
 drivers/net/ethernet/stmicro/stmmac/stmmac.h       |  3 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  | 68 +++++++++++++++++++++-
 7 files changed, 121 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index e1e6f67041ec..527f961579f4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -356,6 +356,7 @@ struct dma_features {
 	unsigned int addr64;
 	unsigned int rssen;
 	unsigned int vlhash;
+	unsigned int sphen;
 };
 
 /* GMAC TX FIFO is 8K, Rx FIFO is 16K */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 01bd20ab34a5..067cedb48706 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -32,6 +32,9 @@
 #define XGMAC_CONFIG_ARPEN		BIT(31)
 #define XGMAC_CONFIG_GPSL		GENMASK(29, 16)
 #define XGMAC_CONFIG_GPSL_SHIFT		16
+#define XGMAC_CONFIG_HDSMS		GENMASK(14, 12)
+#define XGMAC_CONFIG_HDSMS_SHIFT	12
+#define XGMAC_CONFIG_HDSMS_256		(0x2 << XGMAC_CONFIG_HDSMS_SHIFT)
 #define XGMAC_CONFIG_S2KP		BIT(11)
 #define XGMAC_CONFIG_LM			BIT(10)
 #define XGMAC_CONFIG_IPC		BIT(9)
@@ -101,6 +104,7 @@
 #define XGMAC_HW_FEATURE1		0x00000120
 #define XGMAC_HWFEAT_RSSEN		BIT(20)
 #define XGMAC_HWFEAT_TSOEN		BIT(18)
+#define XGMAC_HWFEAT_SPHEN		BIT(17)
 #define XGMAC_HWFEAT_ADDR64		GENMASK(15, 14)
 #define XGMAC_HWFEAT_TXFIFOSIZE		GENMASK(10, 6)
 #define XGMAC_HWFEAT_RXFIFOSIZE		GENMASK(4, 0)
@@ -258,6 +262,7 @@
 #define XGMAC_TCEIE			BIT(0)
 #define XGMAC_DMA_ECC_INT_STATUS	0x0000306c
 #define XGMAC_DMA_CH_CONTROL(x)		(0x00003100 + (0x80 * (x)))
+#define XGMAC_SPH			BIT(24)
 #define XGMAC_PBLx8			BIT(16)
 #define XGMAC_DMA_CH_TX_CONTROL(x)	(0x00003104 + (0x80 * (x)))
 #define XGMAC_TxPBL			GENMASK(21, 16)
@@ -318,6 +323,7 @@
 #define XGMAC_TDES3_CIC_SHIFT		16
 #define XGMAC_TDES3_TPL			GENMASK(17, 0)
 #define XGMAC_TDES3_FL			GENMASK(14, 0)
+#define XGMAC_RDES2_HL			GENMASK(9, 0)
 #define XGMAC_RDES3_OWN			BIT(31)
 #define XGMAC_RDES3_CTXT		BIT(30)
 #define XGMAC_RDES3_IOC			BIT(30)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
index bae8bd41a769..4cef7a3bf8df 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
@@ -29,6 +29,8 @@ static int dwxgmac2_get_rx_status(void *data, struct stmmac_extra_stats *x,
 
 	if (unlikely(rdes3 & XGMAC_RDES3_OWN))
 		return dma_own;
+	if (unlikely(rdes3 & XGMAC_RDES3_CTXT))
+		return discard_frame;
 	if (likely(!(rdes3 & XGMAC_RDES3_LD)))
 		return rx_not_ls;
 	if (unlikely((rdes3 & XGMAC_RDES3_ES) && (rdes3 & XGMAC_RDES3_LD)))
@@ -54,7 +56,7 @@ static void dwxgmac2_set_tx_owner(struct dma_desc *p)
 
 static void dwxgmac2_set_rx_owner(struct dma_desc *p, int disable_rx_ic)
 {
-	p->des3 = cpu_to_le32(XGMAC_RDES3_OWN);
+	p->des3 |= cpu_to_le32(XGMAC_RDES3_OWN);
 
 	if (!disable_rx_ic)
 		p->des3 |= cpu_to_le32(XGMAC_RDES3_IOC);
@@ -285,6 +287,18 @@ static int dwxgmac2_get_rx_hash(struct dma_desc *p, u32 *hash,
 	return -EINVAL;
 }
 
+static int dwxgmac2_get_rx_header_len(struct dma_desc *p, unsigned int *len)
+{
+	*len = le32_to_cpu(p->des2) & XGMAC_RDES2_HL;
+	return 0;
+}
+
+static void dwxgmac2_set_sec_addr(struct dma_desc *p, dma_addr_t addr)
+{
+	p->des2 = cpu_to_le32(lower_32_bits(addr));
+	p->des3 = cpu_to_le32(upper_32_bits(addr));
+}
+
 const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.tx_status = dwxgmac2_get_tx_status,
 	.rx_status = dwxgmac2_get_rx_status,
@@ -309,4 +323,6 @@ const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.set_addr = dwxgmac2_set_addr,
 	.clear = dwxgmac2_clear,
 	.get_rx_hash = dwxgmac2_get_rx_hash,
+	.get_rx_header_len = dwxgmac2_get_rx_header_len,
+	.set_sec_addr = dwxgmac2_set_sec_addr,
 };
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 18cbf4ab4ad2..0f3de4895cf7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -366,6 +366,7 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE1);
 	dma_cap->rssen = (hw_cap & XGMAC_HWFEAT_RSSEN) >> 20;
 	dma_cap->tsoen = (hw_cap & XGMAC_HWFEAT_TSOEN) >> 18;
+	dma_cap->sphen = (hw_cap & XGMAC_HWFEAT_SPHEN) >> 17;
 
 	dma_cap->addr64 = (hw_cap & XGMAC_HWFEAT_ADDR64) >> 14;
 	switch (dma_cap->addr64) {
@@ -472,6 +473,22 @@ static void dwxgmac2_set_bfsize(void __iomem *ioaddr, int bfsize, u32 chan)
 	writel(value, ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
 }
 
+static void dwxgmac2_enable_sph(void __iomem *ioaddr, bool en, u32 chan)
+{
+	u32 value = readl(ioaddr + XGMAC_RX_CONFIG);
+
+	value &= ~XGMAC_CONFIG_HDSMS;
+	value |= XGMAC_CONFIG_HDSMS_256; /* Segment max 256 bytes */
+	writel(value, ioaddr + XGMAC_RX_CONFIG);
+
+	value = readl(ioaddr + XGMAC_DMA_CH_CONTROL(chan));
+	if (en)
+		value |= XGMAC_SPH;
+	else
+		value &= ~XGMAC_SPH;
+	writel(value, ioaddr + XGMAC_DMA_CH_CONTROL(chan));
+}
+
 const struct stmmac_dma_ops dwxgmac210_dma_ops = {
 	.reset = dwxgmac2_dma_reset,
 	.init = dwxgmac2_dma_init,
@@ -498,4 +515,5 @@ const struct stmmac_dma_ops dwxgmac210_dma_ops = {
 	.enable_tso = dwxgmac2_enable_tso,
 	.qmode = dwxgmac2_qmode,
 	.set_bfsize = dwxgmac2_set_bfsize,
+	.enable_sph = dwxgmac2_enable_sph,
 };
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 7e1523c6f456..ed9fda50ee22 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -89,6 +89,8 @@ struct stmmac_desc_ops {
 	/* RSS */
 	int (*get_rx_hash)(struct dma_desc *p, u32 *hash,
 			   enum pkt_hash_types *type);
+	int (*get_rx_header_len)(struct dma_desc *p, unsigned int *len);
+	void (*set_sec_addr)(struct dma_desc *p, dma_addr_t addr);
 };
 
 #define stmmac_init_rx_desc(__priv, __args...) \
@@ -141,6 +143,10 @@ struct stmmac_desc_ops {
 	stmmac_do_void_callback(__priv, desc, clear, __args)
 #define stmmac_get_rx_hash(__priv, __args...) \
 	stmmac_do_callback(__priv, desc, get_rx_hash, __args)
+#define stmmac_get_rx_header_len(__priv, __args...) \
+	stmmac_do_callback(__priv, desc, get_rx_header_len, __args)
+#define stmmac_set_desc_sec_addr(__priv, __args...) \
+	stmmac_do_void_callback(__priv, desc, set_sec_addr, __args)
 
 struct stmmac_dma_cfg;
 struct dma_features;
@@ -191,6 +197,7 @@ struct stmmac_dma_ops {
 	void (*enable_tso)(void __iomem *ioaddr, bool en, u32 chan);
 	void (*qmode)(void __iomem *ioaddr, u32 channel, u8 qmode);
 	void (*set_bfsize)(void __iomem *ioaddr, int bfsize, u32 chan);
+	void (*enable_sph)(void __iomem *ioaddr, bool en, u32 chan);
 };
 
 #define stmmac_reset(__priv, __args...) \
@@ -247,6 +254,8 @@ struct stmmac_dma_ops {
 	stmmac_do_void_callback(__priv, dma, qmode, __args)
 #define stmmac_set_dma_bfsize(__priv, __args...) \
 	stmmac_do_void_callback(__priv, dma, set_bfsize, __args)
+#define stmmac_enable_sph(__priv, __args...) \
+	stmmac_do_void_callback(__priv, dma, enable_sph, __args)
 
 struct mac_device_info;
 struct net_device;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index be9ee3d7ec35..e91dcb5196f6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -58,7 +58,9 @@ struct stmmac_tx_queue {
 
 struct stmmac_rx_buffer {
 	struct page *page;
+	struct page *sec_page;
 	dma_addr_t addr;
+	dma_addr_t sec_addr;
 };
 
 struct stmmac_rx_queue {
@@ -136,6 +138,7 @@ struct stmmac_priv {
 	int hwts_tx_en;
 	bool tx_path_in_lpi_mode;
 	bool tso;
+	int sph;
 
 	unsigned int dma_buf_sz;
 	unsigned int rx_copybreak;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index e1ef8de952cc..fef64e415447 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1206,6 +1206,17 @@ static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
 	if (!buf->page)
 		return -ENOMEM;
 
+	if (priv->sph) {
+		buf->sec_page = page_pool_dev_alloc_pages(rx_q->page_pool);
+		if (!buf->sec_page)
+			return -ENOMEM;
+
+		buf->sec_addr = page_pool_get_dma_addr(buf->sec_page);
+		stmmac_set_desc_sec_addr(priv, p, buf->sec_addr);
+	} else {
+		buf->sec_page = NULL;
+	}
+
 	buf->addr = page_pool_get_dma_addr(buf->page);
 	stmmac_set_desc_addr(priv, p, buf->addr);
 	if (priv->dma_buf_sz == BUF_SIZE_16KiB)
@@ -1228,6 +1239,10 @@ static void stmmac_free_rx_buffer(struct stmmac_priv *priv, u32 queue, int i)
 	if (buf->page)
 		page_pool_put_page(rx_q->page_pool, buf->page, false);
 	buf->page = NULL;
+
+	if (buf->sec_page)
+		page_pool_put_page(rx_q->page_pool, buf->sec_page, false);
+	buf->sec_page = NULL;
 }
 
 /**
@@ -2602,6 +2617,12 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
 			stmmac_enable_tso(priv, priv->ioaddr, 1, chan);
 	}
 
+	/* Enable Split Header */
+	if (priv->sph && priv->hw->rx_csum) {
+		for (chan = 0; chan < rx_cnt; chan++)
+			stmmac_enable_sph(priv, priv->ioaddr, 1, chan);
+	}
+
 	/* Start the ball rolling... */
 	stmmac_start_all_dma(priv);
 
@@ -3321,6 +3342,14 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
 				break;
 		}
 
+		if (priv->sph && !buf->sec_page) {
+			buf->sec_page = page_pool_dev_alloc_pages(rx_q->page_pool);
+			if (!buf->sec_page)
+				break;
+
+			buf->sec_addr = page_pool_get_dma_addr(buf->sec_page);
+		}
+
 		buf->addr = page_pool_get_dma_addr(buf->page);
 
 		/* Sync whole allocation to device. This will invalidate old
@@ -3330,6 +3359,7 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue)
 					   DMA_FROM_DEVICE);
 
 		stmmac_set_desc_addr(priv, p, buf->addr);
+		stmmac_set_desc_sec_addr(priv, p, buf->sec_addr);
 		stmmac_refill_desc3(priv, rx_q, p);
 
 		rx_q->rx_count_frames++;
@@ -3376,10 +3406,11 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 		stmmac_display_ring(priv, rx_head, DMA_RX_SIZE, true);
 	}
 	while (count < limit) {
+		unsigned int hlen = 0, prev_len = 0;
 		enum pkt_hash_types hash_type;
 		struct stmmac_rx_buffer *buf;
-		unsigned int prev_len = 0;
 		struct dma_desc *np, *p;
+		unsigned int sec_len;
 		int entry;
 		u32 hash;
 
@@ -3395,6 +3426,8 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 		}
 
 read_again:
+		sec_len = 0;
+
 		if (count >= limit)
 			break;
 
@@ -3464,6 +3497,15 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 		}
 
 		if (!skb) {
+			int ret = stmmac_get_rx_header_len(priv, p, &hlen);
+
+			if (priv->sph && !ret && (hlen > 0)) {
+				sec_len = len;
+				if (!(status & rx_not_ls))
+					sec_len = sec_len - hlen;
+				len = hlen;
+			}
+
 			skb = netdev_alloc_skb_ip_align(priv->dev, len);
 			if (!skb) {
 				priv->dev->stats.rx_dropped++;
@@ -3496,6 +3538,18 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 			buf->page = NULL;
 		}
 
+		if (sec_len > 0) {
+			dma_sync_single_for_cpu(priv->device, buf->sec_addr,
+						sec_len, DMA_FROM_DEVICE);
+			skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
+					buf->sec_page, 0, sec_len,
+					priv->dma_buf_sz);
+
+			/* Data payload appended into SKB */
+			page_pool_release_page(rx_q->page_pool, buf->sec_page);
+			buf->sec_page = NULL;
+		}
+
 		if (likely(status & rx_not_ls))
 			goto read_again;
 
@@ -3670,6 +3724,8 @@ static int stmmac_set_features(struct net_device *netdev,
 			       netdev_features_t features)
 {
 	struct stmmac_priv *priv = netdev_priv(netdev);
+	bool sph_en;
+	u32 chan;
 
 	/* Keep the COE Type in case of csum is supporting */
 	if (features & NETIF_F_RXCSUM)
@@ -3681,6 +3737,10 @@ static int stmmac_set_features(struct net_device *netdev,
 	 */
 	stmmac_rx_ipc(priv, priv->hw);
 
+	sph_en = (priv->hw->rx_csum > 0) && priv->sph;
+	for (chan = 0; chan < priv->plat->rx_queues_to_use; chan++)
+		stmmac_enable_sph(priv, priv->ioaddr, sph_en, chan);
+
 	return 0;
 }
 
@@ -4398,6 +4458,12 @@ int stmmac_dvr_probe(struct device *device,
 		dev_info(priv->device, "TSO feature enabled\n");
 	}
 
+	if (priv->dma_cap.sphen) {
+		ndev->hw_features |= NETIF_F_GRO;
+		priv->sph = true;
+		dev_info(priv->device, "SPH feature enabled\n");
+	}
+
 	if (priv->dma_cap.addr64) {
 		ret = dma_set_mask_and_coherent(device,
 				DMA_BIT_MASK(priv->dma_cap.addr64));
-- 
2.7.4

[PATCH net-next 18/26] net: stmmac: dwxgmac: Add Flexible PPS support

[Jose Abreu]

Add the support for Flexible PPS in XGMAC cores.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     | 19 ++++++++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 56 ++++++++++++++++++++++
 2 files changed, 75 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 067cedb48706..473d66cbfc75 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -149,6 +149,25 @@
 #define XGMAC_TXTIMESTAMP_NSEC		0x00000d30
 #define XGMAC_TXTSSTSLO			GENMASK(30, 0)
 #define XGMAC_TXTIMESTAMP_SEC		0x00000d34
+#define XGMAC_PPS_CONTROL		0x00000d70
+#define XGMAC_PPS_MAXIDX(x)		((((x) + 1) * 8) - 1)
+#define XGMAC_PPS_MINIDX(x)		((x) * 8)
+#define XGMAC_PPSx_MASK(x)		\
+	GENMASK(XGMAC_PPS_MAXIDX(x), XGMAC_PPS_MINIDX(x))
+#define XGMAC_TRGTMODSELx(x, val)	\
+	GENMASK(XGMAC_PPS_MAXIDX(x) - 1, XGMAC_PPS_MAXIDX(x) - 2) & \
+	((val) << (XGMAC_PPS_MAXIDX(x) - 2))
+#define XGMAC_PPSCMDx(x, val)		\
+	GENMASK(XGMAC_PPS_MINIDX(x) + 3, XGMAC_PPS_MINIDX(x)) & \
+	((val) << XGMAC_PPS_MINIDX(x))
+#define XGMAC_PPSCMD_START		0x2
+#define XGMAC_PPSCMD_STOP		0x5
+#define XGMAC_PPSEN0			BIT(4)
+#define XGMAC_PPSx_TARGET_TIME_SEC(x)	(0x00000d80 + (x) * 0x10)
+#define XGMAC_PPSx_TARGET_TIME_NSEC(x)	(0x00000d84 + (x) * 0x10)
+#define XGMAC_TRGTBUSY0			BIT(31)
+#define XGMAC_PPSx_INTERVAL(x)		(0x00000d88 + (x) * 0x10)
+#define XGMAC_PPSx_WIDTH(x)		(0x00000d8c + (x) * 0x10)
 
 /* MTL Registers */
 #define XGMAC_MTL_OPMODE		0x00001000
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 1161287d3a62..3708cdb16ff7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -8,6 +8,7 @@
 #include <linux/crc32.h>
 #include <linux/iopoll.h>
 #include "stmmac.h"
+#include "stmmac_ptp.h"
 #include "dwxgmac2.h"
 
 static void dwxgmac2_core_init(struct mac_device_info *hw,
@@ -1018,6 +1019,60 @@ static int dwxgmac2_get_mac_tx_timestamp(struct mac_device_info *hw, u64 *ts)
 	return -EBUSY;
 }
 
+static int dwxgmac2_flex_pps_config(void __iomem *ioaddr, int index,
+				    struct stmmac_pps_cfg *cfg, bool enable,
+				    u32 sub_second_inc, u32 systime_flags)
+{
+	u32 tnsec = readl(ioaddr + XGMAC_PPSx_TARGET_TIME_NSEC(index));
+	u32 val = readl(ioaddr + XGMAC_PPS_CONTROL);
+	u64 period;
+
+	if (!cfg->available)
+		return -EINVAL;
+	if (tnsec & XGMAC_TRGTBUSY0)
+		return -EBUSY;
+	if (!sub_second_inc || !systime_flags)
+		return -EINVAL;
+
+	val &= ~XGMAC_PPSx_MASK(index);
+
+	if (!enable) {
+		val |= XGMAC_PPSCMDx(index, XGMAC_PPSCMD_STOP);
+		writel(val, ioaddr + XGMAC_PPS_CONTROL);
+		return 0;
+	}
+
+	val |= XGMAC_PPSCMDx(index, XGMAC_PPSCMD_START);
+	val |= XGMAC_TRGTMODSELx(index, XGMAC_PPSCMD_START);
+	val |= XGMAC_PPSEN0;
+
+	writel(cfg->start.tv_sec, ioaddr + XGMAC_PPSx_TARGET_TIME_SEC(index));
+
+	if (!(systime_flags & PTP_TCR_TSCTRLSSR))
+		cfg->start.tv_nsec = (cfg->start.tv_nsec * 1000) / 465;
+	writel(cfg->start.tv_nsec, ioaddr + XGMAC_PPSx_TARGET_TIME_NSEC(index));
+
+	period = cfg->period.tv_sec * 1000000000;
+	period += cfg->period.tv_nsec;
+
+	do_div(period, sub_second_inc);
+
+	if (period <= 1)
+		return -EINVAL;
+
+	writel(period - 1, ioaddr + XGMAC_PPSx_INTERVAL(index));
+
+	period >>= 1;
+	if (period <= 1)
+		return -EINVAL;
+
+	writel(period - 1, ioaddr + XGMAC_PPSx_WIDTH(index));
+
+	/* Finally, activate it */
+	writel(val, ioaddr + XGMAC_PPS_CONTROL);
+	return 0;
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
 	.core_init = dwxgmac2_core_init,
 	.set_mac = dwxgmac2_set_mac,
@@ -1055,6 +1110,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.update_vlan_hash = dwxgmac2_update_vlan_hash,
 	.rxp_config = dwxgmac3_rxp_config,
 	.get_mac_tx_timestamp = dwxgmac2_get_mac_tx_timestamp,
+	.flex_pps_config = dwxgmac2_flex_pps_config,
 };
 
 int dwxgmac2_setup(struct stmmac_priv *priv)
-- 
2.7.4

[PATCH net-next 19/26] net: stmmac: Add ethtool register dump for XGMAC cores

[Jose Abreu]

Add the ethtool interface to dump the register map in XGMAC cores.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     |  2 ++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 11 +++++++++-
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 10 ++++++++-
 .../net/ethernet/stmicro/stmmac/stmmac_ethtool.c   | 24 ++++++++++++++++------
 4 files changed, 39 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 473d66cbfc75..11fa3b601033 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -244,6 +244,7 @@
 #define XGMAC_RXOVFIS			BIT(16)
 #define XGMAC_ABPSIS			BIT(1)
 #define XGMAC_TXUNFIS			BIT(0)
+#define XGMAC_MAC_REGSIZE		(XGMAC_MTL_QINT_STATUS(15) / 4)
 
 /* DMA Registers */
 #define XGMAC_DMA_MODE			0x00003000
@@ -321,6 +322,7 @@
 #define XGMAC_TBU			BIT(2)
 #define XGMAC_TPS			BIT(1)
 #define XGMAC_TI			BIT(0)
+#define XGMAC_REGSIZE			((0x0000317c + (0x80 * 15)) / 4)
 
 /* Descriptors */
 #define XGMAC_TDES2_IOC			BIT(31)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 3708cdb16ff7..2093c996a090 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -239,6 +239,15 @@ static void dwxgmac2_config_cbs(struct mac_device_info *hw,
 	writel(value, ioaddr + XGMAC_MTL_TCx_ETS_CONTROL(queue));
 }
 
+static void dwxgmac2_dump_regs(struct mac_device_info *hw, u32 *reg_space)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	int i;
+
+	for (i = 0; i < XGMAC_MAC_REGSIZE; i++)
+		reg_space[i] = readl(ioaddr + i * 4);
+}
+
 static int dwxgmac2_host_irq_status(struct mac_device_info *hw,
 				    struct stmmac_extra_stats *x)
 {
@@ -1086,7 +1095,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.set_mtl_tx_queue_weight = dwxgmac2_set_mtl_tx_queue_weight,
 	.map_mtl_to_dma = dwxgmac2_map_mtl_to_dma,
 	.config_cbs = dwxgmac2_config_cbs,
-	.dump_regs = NULL,
+	.dump_regs = dwxgmac2_dump_regs,
 	.host_irq_status = dwxgmac2_host_irq_status,
 	.host_mtl_irq_status = dwxgmac2_host_mtl_irq_status,
 	.flow_ctrl = dwxgmac2_flow_ctrl,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 0f3de4895cf7..42c13d144203 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -128,6 +128,14 @@ static void dwxgmac2_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
 	writel(XGMAC_RDPS, ioaddr + XGMAC_RX_EDMA_CTRL);
 }
 
+static void dwxgmac2_dma_dump_regs(void __iomem *ioaddr, u32 *reg_space)
+{
+	int i;
+
+	for (i = (XGMAC_DMA_MODE / 4); i < XGMAC_REGSIZE; i++)
+		reg_space[i] = readl(ioaddr + i * 4);
+}
+
 static void dwxgmac2_dma_rx_mode(void __iomem *ioaddr, int mode,
 				 u32 channel, int fifosz, u8 qmode)
 {
@@ -496,7 +504,7 @@ const struct stmmac_dma_ops dwxgmac210_dma_ops = {
 	.init_rx_chan = dwxgmac2_dma_init_rx_chan,
 	.init_tx_chan = dwxgmac2_dma_init_tx_chan,
 	.axi = dwxgmac2_dma_axi,
-	.dump_regs = NULL,
+	.dump_regs = dwxgmac2_dma_dump_regs,
 	.dma_rx_mode = dwxgmac2_dma_rx_mode,
 	.dma_tx_mode = dwxgmac2_dma_tx_mode,
 	.enable_dma_irq = dwxgmac2_enable_dma_irq,
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index 2423160ab582..0ea3844ae329 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -18,10 +18,12 @@
 
 #include "stmmac.h"
 #include "dwmac_dma.h"
+#include "dwxgmac2.h"
 
 #define REG_SPACE_SIZE	0x1060
 #define MAC100_ETHTOOL_NAME	"st_mac100"
 #define GMAC_ETHTOOL_NAME	"st_gmac"
+#define XGMAC_ETHTOOL_NAME	"st_xgmac"
 
 #define ETHTOOL_DMA_OFFSET	55
 
@@ -259,6 +261,8 @@ static void stmmac_ethtool_getdrvinfo(struct net_device *dev,
 
 	if (priv->plat->has_gmac || priv->plat->has_gmac4)
 		strlcpy(info->driver, GMAC_ETHTOOL_NAME, sizeof(info->driver));
+	else if (priv->plat->has_xgmac)
+		strlcpy(info->driver, XGMAC_ETHTOOL_NAME, sizeof(info->driver));
 	else
 		strlcpy(info->driver, MAC100_ETHTOOL_NAME,
 			sizeof(info->driver));
@@ -404,23 +408,31 @@ static int stmmac_check_if_running(struct net_device *dev)
 
 static int stmmac_ethtool_get_regs_len(struct net_device *dev)
 {
+	struct stmmac_priv *priv = netdev_priv(dev);
+
+	if (priv->plat->has_xgmac)
+		return XGMAC_REGSIZE * 4;
 	return REG_SPACE_SIZE;
 }
 
 static void stmmac_ethtool_gregs(struct net_device *dev,
 			  struct ethtool_regs *regs, void *space)
 {
-	u32 *reg_space = (u32 *) space;
-
 	struct stmmac_priv *priv = netdev_priv(dev);
+	int size = stmmac_ethtool_get_regs_len(dev);
+	u32 *reg_space = (u32 *) space;
 
-	memset(reg_space, 0x0, REG_SPACE_SIZE);
+	memset(reg_space, 0x0, size);
 
 	stmmac_dump_mac_regs(priv, priv->hw, reg_space);
 	stmmac_dump_dma_regs(priv, priv->ioaddr, reg_space);
-	/* Copy DMA registers to where ethtool expects them */
-	memcpy(&reg_space[ETHTOOL_DMA_OFFSET], &reg_space[DMA_BUS_MODE / 4],
-	       NUM_DWMAC1000_DMA_REGS * 4);
+
+	if (!priv->plat->has_xgmac) {
+		/* Copy DMA registers to where ethtool expects them */
+		memcpy(&reg_space[ETHTOOL_DMA_OFFSET],
+		       &reg_space[DMA_BUS_MODE / 4],
+		       NUM_DWMAC1000_DMA_REGS * 4);
+	}
 }
 
 static int stmmac_nway_reset(struct net_device *dev)
-- 
2.7.4

[PATCH net-next 20/26] net: stmmac: Add a counter for Split Header packets

[Jose Abreu]

Add a counter that increments each time a packet with split header is
received.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/common.h         | 1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c    | 2 ++
 3 files changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 527f961579f4..1303ec81fd3d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -75,6 +75,7 @@ struct stmmac_extra_stats {
 	unsigned long rx_missed_cntr;
 	unsigned long rx_overflow_cntr;
 	unsigned long rx_vlan;
+	unsigned long rx_split_hdr_pkt_n;
 	/* Tx/Rx IRQ error info */
 	unsigned long tx_undeflow_irq;
 	unsigned long tx_process_stopped_irq;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index 0ea3844ae329..8828a5481f61 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -67,6 +67,7 @@ static const struct stmmac_stats stmmac_gstrings_stats[] = {
 	STMMAC_STAT(rx_missed_cntr),
 	STMMAC_STAT(rx_overflow_cntr),
 	STMMAC_STAT(rx_vlan),
+	STMMAC_STAT(rx_split_hdr_pkt_n),
 	/* Tx/Rx IRQ error info */
 	STMMAC_STAT(tx_undeflow_irq),
 	STMMAC_STAT(tx_process_stopped_irq),
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index fef64e415447..34b6b8227b92 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3504,6 +3504,8 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
 				if (!(status & rx_not_ls))
 					sec_len = sec_len - hlen;
 				len = hlen;
+
+				priv->xstats.rx_split_hdr_pkt_n++;
 			}
 
 			skb = netdev_alloc_skb_ip_align(priv->dev, len);
-- 
2.7.4

[PATCH net-next 21/26] net: stmmac: Add support for SA Insertion/Replacement in XGMAC cores

[Jose Abreu]

Add the support for Source Address Insertion and Replacement in XGMAC
cores. Two methods are supported: Descriptor based and register based.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h       |  2 ++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c  | 11 +++++++++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c | 10 +++++++++-
 drivers/net/ethernet/stmicro/stmmac/hwif.h           |  7 +++++++
 drivers/net/ethernet/stmicro/stmmac/stmmac.h         |  1 +
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c    |  6 ++++++
 6 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 11fa3b601033..5a7763be0b17 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -337,6 +337,8 @@
 #define XGMAC_TDES3_CPC			GENMASK(27, 26)
 #define XGMAC_TDES3_CPC_SHIFT		26
 #define XGMAC_TDES3_TCMSSV		BIT(26)
+#define XGMAC_TDES3_SAIC		GENMASK(25, 23)
+#define XGMAC_TDES3_SAIC_SHIFT		23
 #define XGMAC_TDES3_THL			GENMASK(22, 19)
 #define XGMAC_TDES3_THL_SHIFT		19
 #define XGMAC_TDES3_TSE			BIT(18)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 2093c996a090..16e3a0a0c826 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -1082,6 +1082,16 @@ static int dwxgmac2_flex_pps_config(void __iomem *ioaddr, int index,
 	return 0;
 }
 
+static void dwxgmac2_sarc_configure(void __iomem *ioaddr, int val)
+{
+	u32 value = readl(ioaddr + XGMAC_TX_CONFIG);
+
+	value &= ~XGMAC_CONFIG_SARC;
+	value |= val << XGMAC_CONFIG_SARC_SHIFT;
+
+	writel(value, ioaddr + XGMAC_TX_CONFIG);
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
 	.core_init = dwxgmac2_core_init,
 	.set_mac = dwxgmac2_set_mac,
@@ -1120,6 +1130,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.rxp_config = dwxgmac3_rxp_config,
 	.get_mac_tx_timestamp = dwxgmac2_get_mac_tx_timestamp,
 	.flex_pps_config = dwxgmac2_flex_pps_config,
+	.sarc_configure = dwxgmac2_sarc_configure,
 };
 
 int dwxgmac2_setup(struct stmmac_priv *priv)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
index 4cef7a3bf8df..3c2abfb12820 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
@@ -149,7 +149,7 @@ static void dwxgmac2_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 
 	p->des2 |= cpu_to_le32(len & XGMAC_TDES2_B1L);
 
-	tdes3 = tot_pkt_len & XGMAC_TDES3_FL;
+	tdes3 |= tot_pkt_len & XGMAC_TDES3_FL;
 	if (is_fs)
 		tdes3 |= XGMAC_TDES3_FD;
 	else
@@ -299,6 +299,13 @@ static void dwxgmac2_set_sec_addr(struct dma_desc *p, dma_addr_t addr)
 	p->des3 = cpu_to_le32(upper_32_bits(addr));
 }
 
+static void dwxgmac2_set_sarc(struct dma_desc *p, u32 sarc_type)
+{
+	sarc_type <<= XGMAC_TDES3_SAIC_SHIFT;
+
+	p->des3 |= cpu_to_le32(sarc_type & XGMAC_TDES3_SAIC);
+}
+
 const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.tx_status = dwxgmac2_get_tx_status,
 	.rx_status = dwxgmac2_get_rx_status,
@@ -325,4 +332,5 @@ const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.get_rx_hash = dwxgmac2_get_rx_hash,
 	.get_rx_header_len = dwxgmac2_get_rx_header_len,
 	.set_sec_addr = dwxgmac2_set_sec_addr,
+	.set_sarc = dwxgmac2_set_sarc,
 };
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index ed9fda50ee22..e54864cde01b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -91,6 +91,7 @@ struct stmmac_desc_ops {
 			   enum pkt_hash_types *type);
 	int (*get_rx_header_len)(struct dma_desc *p, unsigned int *len);
 	void (*set_sec_addr)(struct dma_desc *p, dma_addr_t addr);
+	void (*set_sarc)(struct dma_desc *p, u32 sarc_type);
 };
 
 #define stmmac_init_rx_desc(__priv, __args...) \
@@ -147,6 +148,8 @@ struct stmmac_desc_ops {
 	stmmac_do_callback(__priv, desc, get_rx_header_len, __args)
 #define stmmac_set_desc_sec_addr(__priv, __args...) \
 	stmmac_do_void_callback(__priv, desc, set_sec_addr, __args)
+#define stmmac_set_desc_sarc(__priv, __args...) \
+	stmmac_do_void_callback(__priv, desc, set_sarc, __args)
 
 struct stmmac_dma_cfg;
 struct dma_features;
@@ -350,6 +353,8 @@ struct stmmac_ops {
 				 bool is_double);
 	/* TX Timestamp */
 	int (*get_mac_tx_timestamp)(struct mac_device_info *hw, u64 *ts);
+	/* Source Address Insertion / Replacement */
+	void (*sarc_configure)(void __iomem *ioaddr, int val);
 };
 
 #define stmmac_core_init(__priv, __args...) \
@@ -426,6 +431,8 @@ struct stmmac_ops {
 	stmmac_do_void_callback(__priv, mac, update_vlan_hash, __args)
 #define stmmac_get_mac_tx_timestamp(__priv, __args...) \
 	stmmac_do_callback(__priv, mac, get_mac_tx_timestamp, __args)
+#define stmmac_sarc_configure(__priv, __args...) \
+	stmmac_do_void_callback(__priv, mac, sarc_configure, __args)
 
 /* PTP and HW Timer helpers */
 struct stmmac_hwtimestamp {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index e91dcb5196f6..39911c8e90c1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -139,6 +139,7 @@ struct stmmac_priv {
 	bool tx_path_in_lpi_mode;
 	bool tso;
 	int sph;
+	u32 sarc_type;
 
 	unsigned int dma_buf_sz;
 	unsigned int rx_copybreak;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 34b6b8227b92..62d206ea7e7a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3010,6 +3010,9 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
 		priv->xstats.tx_set_ic_bit++;
 	}
 
+	if (priv->sarc_type)
+		stmmac_set_desc_sarc(priv, first, priv->sarc_type);
+
 	skb_tx_timestamp(skb);
 
 	if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
@@ -3223,6 +3226,9 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
 		priv->xstats.tx_set_ic_bit++;
 	}
 
+	if (priv->sarc_type)
+		stmmac_set_desc_sarc(priv, first, priv->sarc_type);
+
 	skb_tx_timestamp(skb);
 
 	/* Ready to fill the first descriptor and set the OWN bit w/o any
-- 
2.7.4

[PATCH net-next 22/26] net: stmmac: selftests: Add tests for SA Insertion/Replacement

[Jose Abreu]

Add 4 new tests:
	- SA Insertion (register based)
	- SA Insertion (descriptor based)
	- SA Replacament (register based)
	- SA Replacement (descriptor based)

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 98 +++++++++++++++++++++-
 1 file changed, 97 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index abab84f2ef8b..acfab86431b1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -45,6 +45,7 @@ struct stmmac_packet_attrs {
 	int size;
 	int remove_sa;
 	u8 id;
+	int sarc;
 };
 
 static u8 stmmac_test_next_id;
@@ -230,7 +231,10 @@ static int stmmac_test_loopback_validate(struct sk_buff *skb,
 		if (!ether_addr_equal(ehdr->h_dest, tpriv->packet->dst))
 			goto out;
 	}
-	if (tpriv->packet->src) {
+	if (tpriv->packet->sarc) {
+		if (!ether_addr_equal(ehdr->h_source, ehdr->h_dest))
+			goto out;
+	} else if (tpriv->packet->src) {
 		if (!ether_addr_equal(ehdr->h_source, tpriv->packet->src))
 			goto out;
 	}
@@ -1004,6 +1008,82 @@ static int stmmac_test_rxp(struct stmmac_priv *priv)
 }
 #endif
 
+static int stmmac_test_desc_sai(struct stmmac_priv *priv)
+{
+	unsigned char src[ETH_ALEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	struct stmmac_packet_attrs attr = { };
+	int ret;
+
+	attr.remove_sa = true;
+	attr.sarc = true;
+	attr.src = src;
+	attr.dst = priv->dev->dev_addr;
+
+	priv->sarc_type = 0x1;
+
+	ret = __stmmac_test_loopback(priv, &attr);
+
+	priv->sarc_type = 0x0;
+	return ret;
+}
+
+static int stmmac_test_desc_sar(struct stmmac_priv *priv)
+{
+	unsigned char src[ETH_ALEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	struct stmmac_packet_attrs attr = { };
+	int ret;
+
+	attr.sarc = true;
+	attr.src = src;
+	attr.dst = priv->dev->dev_addr;
+
+	priv->sarc_type = 0x2;
+
+	ret = __stmmac_test_loopback(priv, &attr);
+
+	priv->sarc_type = 0x0;
+	return ret;
+}
+
+static int stmmac_test_reg_sai(struct stmmac_priv *priv)
+{
+	unsigned char src[ETH_ALEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	struct stmmac_packet_attrs attr = { };
+	int ret;
+
+	attr.remove_sa = true;
+	attr.sarc = true;
+	attr.src = src;
+	attr.dst = priv->dev->dev_addr;
+
+	if (stmmac_sarc_configure(priv, priv->ioaddr, 0x2))
+		return -EOPNOTSUPP;
+
+	ret = __stmmac_test_loopback(priv, &attr);
+
+	stmmac_sarc_configure(priv, priv->ioaddr, 0x0);
+	return ret;
+}
+
+static int stmmac_test_reg_sar(struct stmmac_priv *priv)
+{
+	unsigned char src[ETH_ALEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	struct stmmac_packet_attrs attr = { };
+	int ret;
+
+	attr.sarc = true;
+	attr.src = src;
+	attr.dst = priv->dev->dev_addr;
+
+	if (stmmac_sarc_configure(priv, priv->ioaddr, 0x3))
+		return -EOPNOTSUPP;
+
+	ret = __stmmac_test_loopback(priv, &attr);
+
+	stmmac_sarc_configure(priv, priv->ioaddr, 0x0);
+	return ret;
+}
+
 #define STMMAC_LOOPBACK_NONE	0
 #define STMMAC_LOOPBACK_MAC	1
 #define STMMAC_LOOPBACK_PHY	2
@@ -1065,6 +1145,22 @@ static const struct stmmac_test {
 		.name = "Flexible RX Parser   ",
 		.lb = STMMAC_LOOPBACK_PHY,
 		.fn = stmmac_test_rxp,
+	}, {
+		.name = "SA Insertion (desc)  ",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_desc_sai,
+	}, {
+		.name = "SA Replacement (desc)",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_desc_sar,
+	}, {
+		.name = "SA Insertion (reg)  ",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_reg_sai,
+	}, {
+		.name = "SA Replacement (reg)",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_reg_sar,
 	},
 };
 
-- 
2.7.4

[PATCH net-next 23/26] net: stmmac: xgmac: Add EEE support

[Jose Abreu]

Add support for EEE in XGMAC cores by implementing the necessary
callbacks.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     | 12 ++++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 75 ++++++++++++++++++++--
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c |  1 +
 3 files changed, 83 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 5a7763be0b17..75e5374c4161 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -71,6 +71,7 @@
 #define XGMAC_PSRQ(x)			GENMASK((x) * 8 + 7, (x) * 8)
 #define XGMAC_PSRQ_SHIFT(x)		((x) * 8)
 #define XGMAC_INT_STATUS		0x000000b0
+#define XGMAC_LPIIS			BIT(5)
 #define XGMAC_PMTIS			BIT(4)
 #define XGMAC_INT_EN			0x000000b4
 #define XGMAC_TSIE			BIT(12)
@@ -88,10 +89,21 @@
 #define XGMAC_RWKPKTEN			BIT(2)
 #define XGMAC_MGKPKTEN			BIT(1)
 #define XGMAC_PWRDWN			BIT(0)
+#define XGMAC_LPI_CTRL			0x000000d0
+#define XGMAC_TXCGE			BIT(21)
+#define XGMAC_LPITXA			BIT(19)
+#define XGMAC_PLS			BIT(17)
+#define XGMAC_LPITXEN			BIT(16)
+#define XGMAC_RLPIEX			BIT(3)
+#define XGMAC_RLPIEN			BIT(2)
+#define XGMAC_TLPIEX			BIT(1)
+#define XGMAC_TLPIEN			BIT(0)
+#define XGMAC_LPI_TIMER_CTRL		0x000000d4
 #define XGMAC_HW_FEATURE0		0x0000011c
 #define XGMAC_HWFEAT_SAVLANINS		BIT(27)
 #define XGMAC_HWFEAT_RXCOESEL		BIT(16)
 #define XGMAC_HWFEAT_TXCOESEL		BIT(14)
+#define XGMAC_HWFEAT_EEESEL		BIT(13)
 #define XGMAC_HWFEAT_TSSEL		BIT(12)
 #define XGMAC_HWFEAT_AVSEL		BIT(11)
 #define XGMAC_HWFEAT_RAVSEL		BIT(10)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 16e3a0a0c826..353dca543672 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -253,6 +253,7 @@ static int dwxgmac2_host_irq_status(struct mac_device_info *hw,
 {
 	void __iomem *ioaddr = hw->pcsr;
 	u32 stat, en;
+	int ret = 0;
 
 	en = readl(ioaddr + XGMAC_INT_EN);
 	stat = readl(ioaddr + XGMAC_INT_STATUS);
@@ -264,7 +265,24 @@ static int dwxgmac2_host_irq_status(struct mac_device_info *hw,
 		readl(ioaddr + XGMAC_PMT);
 	}
 
-	return 0;
+	if (stat & XGMAC_LPIIS) {
+		u32 lpi = readl(ioaddr + XGMAC_LPI_CTRL);
+
+		if (lpi & XGMAC_TLPIEN) {
+			ret |= CORE_IRQ_TX_PATH_IN_LPI_MODE;
+			x->irq_tx_path_in_lpi_mode_n++;
+		}
+		if (lpi & XGMAC_TLPIEX) {
+			ret |= CORE_IRQ_TX_PATH_EXIT_LPI_MODE;
+			x->irq_tx_path_exit_lpi_mode_n++;
+		}
+		if (lpi & XGMAC_RLPIEN)
+			x->irq_rx_path_in_lpi_mode_n++;
+		if (lpi & XGMAC_RLPIEX)
+			x->irq_rx_path_exit_lpi_mode_n++;
+	}
+
+	return ret;
 }
 
 static int dwxgmac2_host_mtl_irq_status(struct mac_device_info *hw, u32 chan)
@@ -357,6 +375,53 @@ static void dwxgmac2_get_umac_addr(struct mac_device_info *hw,
 	addr[5] = (hi_addr >> 8) & 0xff;
 }
 
+static void dwxgmac2_set_eee_mode(struct mac_device_info *hw,
+				  bool en_tx_lpi_clockgating)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	u32 value;
+
+	value = readl(ioaddr + XGMAC_LPI_CTRL);
+
+	value |= XGMAC_LPITXEN | XGMAC_LPITXA;
+	if (en_tx_lpi_clockgating)
+		value |= XGMAC_TXCGE;
+
+	writel(value, ioaddr + XGMAC_LPI_CTRL);
+}
+
+static void dwxgmac2_reset_eee_mode(struct mac_device_info *hw)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	u32 value;
+
+	value = readl(ioaddr + XGMAC_LPI_CTRL);
+	value &= ~(XGMAC_LPITXEN | XGMAC_LPITXA | XGMAC_TXCGE);
+	writel(value, ioaddr + XGMAC_LPI_CTRL);
+}
+
+static void dwxgmac2_set_eee_pls(struct mac_device_info *hw, int link)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	u32 value;
+
+	value = readl(ioaddr + XGMAC_LPI_CTRL);
+	if (link)
+		value |= XGMAC_PLS;
+	else
+		value &= ~XGMAC_PLS;
+	writel(value, ioaddr + XGMAC_LPI_CTRL);
+}
+
+static void dwxgmac2_set_eee_timer(struct mac_device_info *hw, int ls, int tw)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	u32 value;
+
+	value = (tw & 0xffff) | ((ls & 0x3ff) << 16);
+	writel(value, ioaddr + XGMAC_LPI_TIMER_CTRL);
+}
+
 static void dwxgmac2_set_mchash(void __iomem *ioaddr, u32 *mcfilterbits,
 				int mcbitslog2)
 {
@@ -1112,10 +1177,10 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.pmt = dwxgmac2_pmt,
 	.set_umac_addr = dwxgmac2_set_umac_addr,
 	.get_umac_addr = dwxgmac2_get_umac_addr,
-	.set_eee_mode = NULL,
-	.reset_eee_mode = NULL,
-	.set_eee_timer = NULL,
-	.set_eee_pls = NULL,
+	.set_eee_mode = dwxgmac2_set_eee_mode,
+	.reset_eee_mode = dwxgmac2_reset_eee_mode,
+	.set_eee_timer = dwxgmac2_set_eee_timer,
+	.set_eee_pls = dwxgmac2_set_eee_pls,
 	.pcs_ctrl_ane = NULL,
 	.pcs_rane = NULL,
 	.pcs_get_adv_lp = NULL,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 42c13d144203..f2d5901fbaff 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -361,6 +361,7 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE0);
 	dma_cap->rx_coe = (hw_cap & XGMAC_HWFEAT_RXCOESEL) >> 16;
 	dma_cap->tx_coe = (hw_cap & XGMAC_HWFEAT_TXCOESEL) >> 14;
+	dma_cap->eee = (hw_cap & XGMAC_HWFEAT_EEESEL) >> 13;
 	dma_cap->atime_stamp = (hw_cap & XGMAC_HWFEAT_TSSEL) >> 12;
 	dma_cap->av = (hw_cap & XGMAC_HWFEAT_AVSEL) >> 11;
 	dma_cap->av &= (hw_cap & XGMAC_HWFEAT_RAVSEL) >> 10;
-- 
2.7.4

[PATCH net-next 24/26] net: stmmac: Add support for VLAN Insertion Offload

[Jose Abreu]

Adds the logic to insert a given VLAN ID in a packet. This is offloaded
to HW and its descriptor based. For now, only XGMAC implements the
necessary callbacks.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/common.h       |  8 ++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     | 15 +++++++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_core.c    | 13 ++++++
 .../net/ethernet/stmicro/stmmac/dwxgmac2_descs.c   | 36 ++++++++++++++++
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c |  2 +
 drivers/net/ethernet/stmicro/stmmac/hwif.h         | 10 +++++
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  | 49 +++++++++++++++++++++-
 7 files changed, 132 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 1303ec81fd3d..49aa56ca09cc 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -358,6 +358,8 @@ struct dma_features {
 	unsigned int rssen;
 	unsigned int vlhash;
 	unsigned int sphen;
+	unsigned int vlins;
+	unsigned int dvlan;
 };
 
 /* GMAC TX FIFO is 8K, Rx FIFO is 16K */
@@ -389,6 +391,12 @@ struct dma_features {
 #define STMMAC_RSS_HASH_KEY_SIZE	40
 #define STMMAC_RSS_MAX_TABLE_SIZE	256
 
+/* VLAN */
+#define STMMAC_VLAN_NONE	0x0
+#define STMMAC_VLAN_REMOVE	0x1
+#define STMMAC_VLAN_INSERT	0x2
+#define STMMAC_VLAN_REPLACE	0x3
+
 extern const struct stmmac_desc_ops enh_desc_ops;
 extern const struct stmmac_desc_ops ndesc_ops;
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 75e5374c4161..07372ac3bc2e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -63,6 +63,11 @@
 #define XGMAC_VLAN_ETV			BIT(16)
 #define XGMAC_VLAN_VID			GENMASK(15, 0)
 #define XGMAC_VLAN_HASH_TABLE		0x00000058
+#define XGMAC_VLAN_INCL			0x00000060
+#define XGMAC_VLAN_VLTI			BIT(20)
+#define XGMAC_VLAN_CSVL			BIT(19)
+#define XGMAC_VLAN_VLC			GENMASK(17, 16)
+#define XGMAC_VLAN_VLC_SHIFT		16
 #define XGMAC_RXQ_CTRL0			0x000000a0
 #define XGMAC_RXQEN(x)			GENMASK((x) * 2 + 1, (x) * 2)
 #define XGMAC_RXQEN_SHIFT(x)		((x) * 2)
@@ -128,6 +133,7 @@
 #define XGMAC_HWFEAT_RXQCNT		GENMASK(3, 0)
 #define XGMAC_HW_FEATURE3		0x00000128
 #define XGMAC_HWFEAT_ASP		GENMASK(15, 14)
+#define XGMAC_HWFEAT_DVLAN		BIT(13)
 #define XGMAC_HWFEAT_FRPES		GENMASK(12, 11)
 #define XGMAC_HWFEAT_FRPPB		GENMASK(10, 9)
 #define XGMAC_HWFEAT_FRPSEL		BIT(3)
@@ -337,10 +343,14 @@
 #define XGMAC_REGSIZE			((0x0000317c + (0x80 * 15)) / 4)
 
 /* Descriptors */
+#define XGMAC_TDES2_IVT			GENMASK(31, 16)
+#define XGMAC_TDES2_IVT_SHIFT		16
 #define XGMAC_TDES2_IOC			BIT(31)
 #define XGMAC_TDES2_TTSE		BIT(30)
 #define XGMAC_TDES2_B2L			GENMASK(29, 16)
 #define XGMAC_TDES2_B2L_SHIFT		16
+#define XGMAC_TDES2_VTIR		GENMASK(15, 14)
+#define XGMAC_TDES2_VTIR_SHIFT		14
 #define XGMAC_TDES2_B1L			GENMASK(13, 0)
 #define XGMAC_TDES3_OWN			BIT(31)
 #define XGMAC_TDES3_CTXT		BIT(30)
@@ -353,10 +363,15 @@
 #define XGMAC_TDES3_SAIC_SHIFT		23
 #define XGMAC_TDES3_THL			GENMASK(22, 19)
 #define XGMAC_TDES3_THL_SHIFT		19
+#define XGMAC_TDES3_IVTIR		GENMASK(19, 18)
+#define XGMAC_TDES3_IVTIR_SHIFT		18
 #define XGMAC_TDES3_TSE			BIT(18)
+#define XGMAC_TDES3_IVLTV		BIT(17)
 #define XGMAC_TDES3_CIC			GENMASK(17, 16)
 #define XGMAC_TDES3_CIC_SHIFT		16
 #define XGMAC_TDES3_TPL			GENMASK(17, 0)
+#define XGMAC_TDES3_VLTV		BIT(16)
+#define XGMAC_TDES3_VT			GENMASK(15, 0)
 #define XGMAC_TDES3_FL			GENMASK(14, 0)
 #define XGMAC_RDES2_HL			GENMASK(9, 0)
 #define XGMAC_RDES3_OWN			BIT(31)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
index 353dca543672..2cc9c3a1ae29 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c
@@ -1157,6 +1157,18 @@ static void dwxgmac2_sarc_configure(void __iomem *ioaddr, int val)
 	writel(value, ioaddr + XGMAC_TX_CONFIG);
 }
 
+static void dwxgmac2_enable_vlan(struct mac_device_info *hw, u32 type)
+{
+	void __iomem *ioaddr = hw->pcsr;
+	u32 value;
+
+	value = readl(ioaddr + XGMAC_VLAN_INCL);
+	value |= XGMAC_VLAN_VLTI;
+	value &= ~XGMAC_VLAN_VLC;
+	value |= (type << XGMAC_VLAN_VLC_SHIFT) & XGMAC_VLAN_VLC;
+	writel(value, ioaddr + XGMAC_VLAN_INCL);
+}
+
 const struct stmmac_ops dwxgmac210_ops = {
 	.core_init = dwxgmac2_core_init,
 	.set_mac = dwxgmac2_set_mac,
@@ -1196,6 +1208,7 @@ const struct stmmac_ops dwxgmac210_ops = {
 	.get_mac_tx_timestamp = dwxgmac2_get_mac_tx_timestamp,
 	.flex_pps_config = dwxgmac2_flex_pps_config,
 	.sarc_configure = dwxgmac2_sarc_configure,
+	.enable_vlan = dwxgmac2_enable_vlan,
 };
 
 int dwxgmac2_setup(struct stmmac_priv *priv)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
index 3c2abfb12820..0e34463eb2fa 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
@@ -306,6 +306,40 @@ static void dwxgmac2_set_sarc(struct dma_desc *p, u32 sarc_type)
 	p->des3 |= cpu_to_le32(sarc_type & XGMAC_TDES3_SAIC);
 }
 
+static void dwxgmac2_set_vlan_tag(struct dma_desc *p, u16 tag, u16 inner_tag,
+				  u32 inner_type)
+{
+	p->des0 = 0;
+	p->des1 = 0;
+	if (inner_tag) {
+		u32 des = inner_tag << XGMAC_TDES2_IVT_SHIFT;
+
+		des &= XGMAC_TDES2_IVT;
+		p->des2 = cpu_to_le32(des);
+
+		des = inner_type << XGMAC_TDES3_IVTIR_SHIFT;
+		des &= XGMAC_TDES3_IVTIR;
+		p->des3 = cpu_to_le32(des | XGMAC_TDES3_IVLTV);
+	} else {
+		p->des2 = 0;
+		p->des3 = 0;
+	}
+
+	if (tag) {
+		p->des3 = cpu_to_le32((tag & XGMAC_TDES3_VT) | XGMAC_TDES3_VLTV);
+	} else {
+		p->des3 = 0;
+	}
+
+	p->des3 |= cpu_to_le32(XGMAC_TDES3_CTXT);
+}
+
+static void dwxgmac2_set_vlan(struct dma_desc *p, u32 type)
+{
+	type <<= XGMAC_TDES2_VTIR_SHIFT;
+	p->des2 |= cpu_to_le32(type & XGMAC_TDES2_VTIR);
+}
+
 const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.tx_status = dwxgmac2_get_tx_status,
 	.rx_status = dwxgmac2_get_rx_status,
@@ -333,4 +367,6 @@ const struct stmmac_desc_ops dwxgmac210_desc_ops = {
 	.get_rx_header_len = dwxgmac2_get_rx_header_len,
 	.set_sec_addr = dwxgmac2_set_sec_addr,
 	.set_sarc = dwxgmac2_set_sarc,
+	.set_vlan_tag = dwxgmac2_set_vlan_tag,
+	.set_vlan = dwxgmac2_set_vlan,
 };
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index f2d5901fbaff..64956465c030 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -359,6 +359,7 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 
 	/*  MAC HW feature 0 */
 	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE0);
+	dma_cap->vlins = (hw_cap & XGMAC_HWFEAT_SAVLANINS) >> 27;
 	dma_cap->rx_coe = (hw_cap & XGMAC_HWFEAT_RXCOESEL) >> 16;
 	dma_cap->tx_coe = (hw_cap & XGMAC_HWFEAT_TXCOESEL) >> 14;
 	dma_cap->eee = (hw_cap & XGMAC_HWFEAT_EEESEL) >> 13;
@@ -413,6 +414,7 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	/* MAC HW feature 3 */
 	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE3);
 	dma_cap->asp = (hw_cap & XGMAC_HWFEAT_ASP) >> 14;
+	dma_cap->dvlan = (hw_cap & XGMAC_HWFEAT_DVLAN) >> 13;
 	dma_cap->frpes = (hw_cap & XGMAC_HWFEAT_FRPES) >> 11;
 	dma_cap->frpbs = (hw_cap & XGMAC_HWFEAT_FRPPB) >> 9;
 	dma_cap->frpsel = (hw_cap & XGMAC_HWFEAT_FRPSEL) >> 3;
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index e54864cde01b..9435b312495d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -92,6 +92,9 @@ struct stmmac_desc_ops {
 	int (*get_rx_header_len)(struct dma_desc *p, unsigned int *len);
 	void (*set_sec_addr)(struct dma_desc *p, dma_addr_t addr);
 	void (*set_sarc)(struct dma_desc *p, u32 sarc_type);
+	void (*set_vlan_tag)(struct dma_desc *p, u16 tag, u16 inner_tag,
+			     u32 inner_type);
+	void (*set_vlan)(struct dma_desc *p, u32 type);
 };
 
 #define stmmac_init_rx_desc(__priv, __args...) \
@@ -150,6 +153,10 @@ struct stmmac_desc_ops {
 	stmmac_do_void_callback(__priv, desc, set_sec_addr, __args)
 #define stmmac_set_desc_sarc(__priv, __args...) \
 	stmmac_do_void_callback(__priv, desc, set_sarc, __args)
+#define stmmac_set_desc_vlan_tag(__priv, __args...) \
+	stmmac_do_void_callback(__priv, desc, set_vlan_tag, __args)
+#define stmmac_set_desc_vlan(__priv, __args...) \
+	stmmac_do_void_callback(__priv, desc, set_vlan, __args)
 
 struct stmmac_dma_cfg;
 struct dma_features;
@@ -351,6 +358,7 @@ struct stmmac_ops {
 	/* VLAN */
 	void (*update_vlan_hash)(struct mac_device_info *hw, u32 hash,
 				 bool is_double);
+	void (*enable_vlan)(struct mac_device_info *hw, u32 type);
 	/* TX Timestamp */
 	int (*get_mac_tx_timestamp)(struct mac_device_info *hw, u64 *ts);
 	/* Source Address Insertion / Replacement */
@@ -429,6 +437,8 @@ struct stmmac_ops {
 	stmmac_do_callback(__priv, mac, rss_configure, __args)
 #define stmmac_update_vlan_hash(__priv, __args...) \
 	stmmac_do_void_callback(__priv, mac, update_vlan_hash, __args)
+#define stmmac_enable_vlan(__priv, __args...) \
+	stmmac_do_void_callback(__priv, mac, enable_vlan, __args)
 #define stmmac_get_mac_tx_timestamp(__priv, __args...) \
 	stmmac_do_callback(__priv, mac, get_mac_tx_timestamp, __args)
 #define stmmac_sarc_configure(__priv, __args...) \
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 62d206ea7e7a..dca44ee905e8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2800,6 +2800,33 @@ static int stmmac_release(struct net_device *dev)
 	return 0;
 }
 
+static bool stmmac_vlan_insert(struct stmmac_priv *priv, struct sk_buff *skb,
+			       struct stmmac_tx_queue *tx_q)
+{
+	u16 tag = 0x0, inner_tag = 0x0;
+	u32 inner_type = 0x0;
+	struct dma_desc *p;
+
+	if (!priv->dma_cap.vlins)
+		return false;
+	if (!skb_vlan_tag_present(skb))
+		return false;
+	if (skb->vlan_proto == htons(ETH_P_8021AD)) {
+		inner_tag = skb_vlan_tag_get(skb);
+		inner_type = STMMAC_VLAN_INSERT;
+	} else {
+		tag = skb_vlan_tag_get(skb);
+	}
+
+	p = tx_q->dma_tx + tx_q->cur_tx;
+	if (stmmac_set_desc_vlan_tag(priv, p, tag, inner_tag, inner_type))
+		return false;
+
+	stmmac_set_tx_owner(priv, p);
+	tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE);
+	return true;
+}
+
 /**
  *  stmmac_tso_allocator - close entry point of the driver
  *  @priv: driver private structure
@@ -2879,12 +2906,13 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
 	struct stmmac_priv *priv = netdev_priv(dev);
 	int nfrags = skb_shinfo(skb)->nr_frags;
 	u32 queue = skb_get_queue_mapping(skb);
-	unsigned int first_entry;
 	struct stmmac_tx_queue *tx_q;
+	unsigned int first_entry;
 	int tmp_pay_len = 0;
 	u32 pay_len, mss;
 	u8 proto_hdr_len;
 	dma_addr_t des;
+	bool has_vlan;
 	int i;
 
 	tx_q = &priv->tx_queue[queue];
@@ -2926,12 +2954,18 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
 			skb->data_len);
 	}
 
+	/* Check if VLAN can be inserted by HW */
+	has_vlan = stmmac_vlan_insert(priv, skb, tx_q);
+
 	first_entry = tx_q->cur_tx;
 	WARN_ON(tx_q->tx_skbuff[first_entry]);
 
 	desc = tx_q->dma_tx + first_entry;
 	first = desc;
 
+	if (has_vlan)
+		stmmac_set_desc_vlan(priv, first, STMMAC_VLAN_INSERT);
+
 	/* first descriptor: fill Headers on Buf1 */
 	des = dma_map_single(priv->device, skb->data, skb_headlen(skb),
 			     DMA_TO_DEVICE);
@@ -3091,6 +3125,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
 	unsigned int first_entry;
 	unsigned int enh_desc;
 	dma_addr_t des;
+	bool has_vlan;
 	int entry;
 
 	tx_q = &priv->tx_queue[queue];
@@ -3116,6 +3151,9 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
 		return NETDEV_TX_BUSY;
 	}
 
+	/* Check if VLAN can be inserted by HW */
+	has_vlan = stmmac_vlan_insert(priv, skb, tx_q);
+
 	entry = tx_q->cur_tx;
 	first_entry = entry;
 	WARN_ON(tx_q->tx_skbuff[first_entry]);
@@ -3129,6 +3167,9 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	first = desc;
 
+	if (has_vlan)
+		stmmac_set_desc_vlan(priv, first, STMMAC_VLAN_INSERT);
+
 	enh_desc = priv->plat->enh_desc;
 	/* To program the descriptors according to the size of the frame */
 	if (enh_desc)
@@ -4498,6 +4539,12 @@ int stmmac_dvr_probe(struct device *device,
 		ndev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
 		ndev->features |= NETIF_F_HW_VLAN_STAG_FILTER;
 	}
+	if (priv->dma_cap.vlins) {
+		stmmac_enable_vlan(priv, priv->hw, STMMAC_VLAN_INSERT);
+		ndev->features |= NETIF_F_HW_VLAN_CTAG_TX;
+		if (priv->dma_cap.dvlan)
+			ndev->features |= NETIF_F_HW_VLAN_STAG_TX;
+	}
 #endif
 	priv->msg_enable = netif_msg_init(debug, default_msg_level);
 
-- 
2.7.4

[PATCH net-next 25/26] net: stmmac: selftests: Add selftest for VLAN TX Offload

[Jose Abreu]

Add 2 new selftests for VLAN Insertion offloading. Tests are for inner
and outer VLAN offloading.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 81 ++++++++++++++++++++++
 1 file changed, 81 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index acfab86431b1..a0da35b2b4c2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -731,6 +731,9 @@ static int stmmac_test_vlan_validate(struct sk_buff *skb,
 	struct ethhdr *ehdr;
 	struct udphdr *uhdr;
 	struct iphdr *ihdr;
+	u16 proto;
+
+	proto = tpriv->double_vlan ? ETH_P_8021AD : ETH_P_8021Q;
 
 	skb = skb_unshare(skb, GFP_ATOMIC);
 	if (!skb)
@@ -740,6 +743,12 @@ static int stmmac_test_vlan_validate(struct sk_buff *skb,
 		goto out;
 	if (skb_headlen(skb) < (STMMAC_TEST_PKT_SIZE - ETH_HLEN))
 		goto out;
+	if (tpriv->vlan_id) {
+		if (skb->vlan_proto != htons(proto))
+			goto out;
+		if (skb->vlan_tci != tpriv->vlan_id)
+			goto out;
+	}
 
 	ehdr = (struct ethhdr *)skb_mac_header(skb);
 	if (!ether_addr_equal(ehdr->h_dest, tpriv->packet->dst))
@@ -1084,6 +1093,70 @@ static int stmmac_test_reg_sar(struct stmmac_priv *priv)
 	return ret;
 }
 
+static int stmmac_test_vlanoff_common(struct stmmac_priv *priv, bool svlan)
+{
+	struct stmmac_packet_attrs attr = { };
+	struct stmmac_test_priv *tpriv;
+	struct sk_buff *skb = NULL;
+	int ret = 0;
+	u16 proto;
+
+	if (!priv->dma_cap.vlins)
+		return -EOPNOTSUPP;
+
+	tpriv = kzalloc(sizeof(*tpriv), GFP_KERNEL);
+	if (!tpriv)
+		return -ENOMEM;
+
+	proto = svlan ? ETH_P_8021AD : ETH_P_8021Q;
+
+	tpriv->ok = false;
+	tpriv->double_vlan = svlan;
+	init_completion(&tpriv->comp);
+
+	tpriv->pt.type = htons(ETH_P_IP);
+	tpriv->pt.func = stmmac_test_vlan_validate;
+	tpriv->pt.dev = priv->dev;
+	tpriv->pt.af_packet_priv = tpriv;
+	tpriv->packet = &attr;
+	tpriv->vlan_id = 0x123;
+	dev_add_pack(&tpriv->pt);
+
+	ret = vlan_vid_add(priv->dev, htons(proto), tpriv->vlan_id);
+	if (ret)
+		goto cleanup;
+
+	attr.dst = priv->dev->dev_addr;
+
+	skb = stmmac_test_get_udp_skb(priv, &attr);
+	if (!skb) {
+		ret = -ENOMEM;
+		goto vlan_del;
+	}
+
+	__vlan_hwaccel_put_tag(skb, htons(proto), tpriv->vlan_id);
+	ret = __stmmac_test_loopback(priv, &attr);
+
+vlan_del:
+	vlan_vid_del(priv->dev, htons(proto), tpriv->vlan_id);
+cleanup:
+	dev_remove_pack(&tpriv->pt);
+	kfree(tpriv);
+	return ret;
+}
+
+static int stmmac_test_vlanoff(struct stmmac_priv *priv)
+{
+	return stmmac_test_vlanoff_common(priv, false);
+}
+
+static int stmmac_test_svlanoff(struct stmmac_priv *priv)
+{
+	if (!priv->dma_cap.dvlan)
+		return -EOPNOTSUPP;
+	return stmmac_test_vlanoff_common(priv, true);
+}
+
 #define STMMAC_LOOPBACK_NONE	0
 #define STMMAC_LOOPBACK_MAC	1
 #define STMMAC_LOOPBACK_PHY	2
@@ -1161,6 +1234,14 @@ static const struct stmmac_test {
 		.name = "SA Replacement (reg)",
 		.lb = STMMAC_LOOPBACK_PHY,
 		.fn = stmmac_test_reg_sar,
+	}, {
+		.name = "VLAN TX Insertion   ",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_vlanoff,
+	}, {
+		.name = "SVLAN TX Insertion  ",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_svlanoff,
 	},
 };
 
-- 
2.7.4

[PATCH net-next 26/26] net: stmmac: selftests: Return proper error code to userspace

[Jose Abreu]

We can do better than just return 1 to userspace. Lets return a proper
Linux error code.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 .../net/ethernet/stmicro/stmmac/stmmac_selftests.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
index a0da35b2b4c2..d40f6a109633 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
@@ -316,7 +316,7 @@ static int __stmmac_test_loopback(struct stmmac_priv *priv,
 		attr->timeout = STMMAC_LB_TIMEOUT;
 
 	wait_for_completion_timeout(&tpriv->comp, attr->timeout);
-	ret = !tpriv->ok;
+	ret = tpriv->ok ? 0 : -ETIMEDOUT;
 
 cleanup:
 	dev_remove_pack(&tpriv->pt);
@@ -477,7 +477,7 @@ static int stmmac_test_hfilt(struct stmmac_priv *priv)
 
 	/* Shall NOT receive packet */
 	ret = __stmmac_test_loopback(priv, &attr);
-	ret = !ret;
+	ret = ret ? 0 : -EINVAL;
 
 cleanup:
 	dev_mc_del(priv->dev, gd_addr);
@@ -509,7 +509,7 @@ static int stmmac_test_pfilt(struct stmmac_priv *priv)
 
 	/* Shall NOT receive packet */
 	ret = __stmmac_test_loopback(priv, &attr);
-	ret = !ret;
+	ret = ret ? 0 : -EINVAL;
 
 cleanup:
 	dev_uc_del(priv->dev, gd_addr);
@@ -559,7 +559,7 @@ static int stmmac_test_mcfilt(struct stmmac_priv *priv)
 
 	/* Shall NOT receive packet */
 	ret = __stmmac_test_loopback(priv, &attr);
-	ret = !ret;
+	ret = ret ? 0 : -EINVAL;
 
 cleanup:
 	dev_uc_del(priv->dev, uc_addr);
@@ -597,7 +597,7 @@ static int stmmac_test_ucfilt(struct stmmac_priv *priv)
 
 	/* Shall NOT receive packet */
 	ret = __stmmac_test_loopback(priv, &attr);
-	ret = !ret;
+	ret = ret ? 0 : -EINVAL;
 
 cleanup:
 	dev_mc_del(priv->dev, mc_addr);
@@ -696,7 +696,7 @@ static int stmmac_test_flowctrl(struct stmmac_priv *priv)
 	}
 
 	wait_for_completion_timeout(&tpriv->comp, STMMAC_LB_TIMEOUT);
-	ret = !tpriv->ok;
+	ret = tpriv->ok ? 0 : -ETIMEDOUT;
 
 cleanup:
 	dev_mc_del(priv->dev, paddr);
@@ -830,11 +830,11 @@ static int stmmac_test_vlanfilt(struct stmmac_priv *priv)
 			goto vlan_del;
 
 		wait_for_completion_timeout(&tpriv->comp, STMMAC_LB_TIMEOUT);
-		ret = !tpriv->ok;
+		ret = tpriv->ok ? 0 : -ETIMEDOUT;
 		if (ret && !i) {
 			goto vlan_del;
 		} else if (!ret && i) {
-			ret = -1;
+			ret = -EINVAL;
 			goto vlan_del;
 		} else {
 			ret = 0;
@@ -906,11 +906,11 @@ static int stmmac_test_dvlanfilt(struct stmmac_priv *priv)
 			goto vlan_del;
 
 		wait_for_completion_timeout(&tpriv->comp, STMMAC_LB_TIMEOUT);
-		ret = !tpriv->ok;
+		ret = tpriv->ok ? 0 : -ETIMEDOUT;
 		if (ret && !i) {
 			goto vlan_del;
 		} else if (!ret && i) {
-			ret = -1;
+			ret = -EINVAL;
 			goto vlan_del;
 		} else {
 			ret = 0;
@@ -995,7 +995,7 @@ static int stmmac_test_rxp(struct stmmac_priv *priv)
 	attr.src = addr;
 
 	ret = __stmmac_test_loopback(priv, &attr);
-	ret = !ret; /* Shall NOT receive packet */
+	ret = ret ? 0 : -EINVAL; /* Shall NOT receive packet */
 
 	cls_u32.command = TC_CLSU32_DELETE_KNODE;
 	stmmac_tc_setup_cls_u32(priv, priv, &cls_u32);
-- 
2.7.4

Re: [PATCH net-next 00/26] net: stmmac: Misc improvements for XGMAC

[David Miller]

This patch series is way too large.

Break it down into smaller collections of changes, say a dozen at a time or so.

Thank you.