Merge branch 'xgene'

Iyappan Subramanian says:

====================
Adding SGMII based 1GbE basic support to APM X-Gene SoC ethernet driver.

v2: Address comments from v1
* Split the patchset into two, the first one being preparatory patch
* Added link_state function pointer to the xgene_mac_ops structure
* Added xgene_indirect_ctl structure for indirect read/write arguments

v1:
* Initial version
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/arm64/boot/dts/apm-mustang.dts

@@ -33,6 +33,10 @@ &menet {
 	status = "ok";
 };
 
+&sgenet0 {
+	status = "ok";
+};
+
 &xgenet {
 	status = "ok";
 };

arch/arm64/boot/dts/apm-storm.dtsi

@@ -176,6 +176,16 @@ menetclk: menetclk {
 				clock-output-names = "menetclk";
 			};
 
+			sge0clk: sge0clk@1f21c000 {
+				compatible = "apm,xgene-device-clock";
+				#clock-cells = <1>;
+				clocks = <&socplldiv2 0>;
+				reg = <0x0 0x1f21c000 0x0 0x1000>;
+				reg-names = "csr-reg";
+				csr-mask = <0x3>;
+				clock-output-names = "sge0clk";
+			};
+
 			xge0clk: xge0clk@1f61c000 {
 				compatible = "apm,xgene-device-clock";
 				#clock-cells = <1>;
@@ -446,6 +456,20 @@ menetphy: menetphy@3 {
 			};
 		};
 
+		sgenet0: ethernet@1f210000 {
+			compatible = "apm,xgene-enet";
+			status = "disabled";
+			reg = <0x0 0x1f210000 0x0 0x10000>,
+			      <0x0 0x1f200000 0x0 0X10000>,
+			      <0x0 0x1B000000 0x0 0X20000>;
+			reg-names = "enet_csr", "ring_csr", "ring_cmd";
+			interrupts = <0x0 0xA0 0x4>;
+			dma-coherent;
+			clocks = <&sge0clk 0>;
+			local-mac-address = [00 00 00 00 00 00];
+			phy-connection-type = "sgmii";
+		};
+
 		xgenet: ethernet@1f610000 {
 			compatible = "apm,xgene-enet";
 			status = "disabled";

drivers/net/ethernet/apm/xgene/Makefile

@@ -2,6 +2,6 @@
 # Makefile for APM X-Gene Ethernet Driver.
 #
 
-xgene-enet-objs := xgene_enet_hw.o xgene_enet_xgmac.o \
+xgene-enet-objs := xgene_enet_hw.o xgene_enet_sgmac.o xgene_enet_xgmac.o \
 		   xgene_enet_main.o xgene_enet_ethtool.o
 obj-$(CONFIG_NET_XGENE) += xgene-enet.o

drivers/net/ethernet/apm/xgene/xgene_enet_ethtool.c

@@ -64,15 +64,24 @@ static int xgene_get_settings(struct net_device *ndev, struct ethtool_cmd *cmd)
 			return -ENODEV;
 
 		return phy_ethtool_gset(phydev, cmd);
-	}
-
+	} else if (pdata->phy_mode == PHY_INTERFACE_MODE_SGMII) {
+		cmd->supported = SUPPORTED_1000baseT_Full |
+				 SUPPORTED_Autoneg | SUPPORTED_MII;
+		cmd->advertising = cmd->supported;
+		ethtool_cmd_speed_set(cmd, SPEED_1000);
+		cmd->duplex = DUPLEX_FULL;
+		cmd->port = PORT_MII;
+		cmd->transceiver = XCVR_INTERNAL;
+		cmd->autoneg = AUTONEG_ENABLE;
+	} else {
 		cmd->supported = SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE;
 		cmd->advertising = cmd->supported;
 		ethtool_cmd_speed_set(cmd, SPEED_10000);
 		cmd->duplex = DUPLEX_FULL;
 		cmd->port = PORT_FIBRE;
-	cmd->transceiver = XCVR_EXTERNAL;
+		cmd->transceiver = XCVR_INTERNAL;
 		cmd->autoneg = AUTONEG_DISABLE;
+	}
 
 	return 0;
 }

drivers/net/ethernet/apm/xgene/xgene_enet_hw.c

@@ -410,7 +410,6 @@ static void xgene_gmac_set_mac_addr(struct xgene_enet_pdata *pdata)
 	addr0 = (dev_addr[3] << 24) | (dev_addr[2] << 16) |
 		(dev_addr[1] << 8) | dev_addr[0];
 	addr1 = (dev_addr[5] << 24) | (dev_addr[4] << 16);
-	addr1 |= pdata->phy_addr & 0xFFFF;
 
 	xgene_enet_wr_mcx_mac(pdata, STATION_ADDR0_ADDR, addr0);
 	xgene_enet_wr_mcx_mac(pdata, STATION_ADDR1_ADDR, addr1);

drivers/net/ethernet/apm/xgene/xgene_enet_hw.h

@@ -44,6 +44,7 @@ static inline u32 xgene_get_bits(u32 val, u32 start, u32 end)
 
 enum xgene_enet_rm {
 	RM0,
+	RM1,
 	RM3 = 3
 };
 
@@ -143,6 +144,8 @@ enum xgene_enet_rm {
 #define CFG_CLE_FPSEL0_SET(dst, val)		xgene_set_bits(dst, val, 16, 4)
 #define CFG_MACMODE_SET(dst, val)		xgene_set_bits(dst, val, 18, 2)
 #define CFG_WAITASYNCRD_SET(dst, val)		xgene_set_bits(dst, val, 0, 16)
+#define CFG_CLE_DSTQID0(val)		(val & GENMASK(11, 0))
+#define CFG_CLE_FPSEL0(val)		((val << 16) & GENMASK(19, 16))
 #define ICM_CONFIG0_REG_0_ADDR		0x0400
 #define ICM_CONFIG2_REG_0_ADDR		0x0410
 #define RX_DV_GATE_REG_0_ADDR		0x05fc
@@ -179,7 +182,6 @@ enum xgene_enet_rm {
 #define TUND_ADDR			0x4a
 
 #define TSO_IPPROTO_TCP			1
-#define	FULL_DUPLEX			2
 
 #define USERINFO_POS			0
 #define USERINFO_LEN			32

drivers/net/ethernet/apm/xgene/xgene_enet_main.c

@@ -21,6 +21,7 @@
 
 #include "xgene_enet_main.h"
 #include "xgene_enet_hw.h"
+#include "xgene_enet_sgmac.h"
 #include "xgene_enet_xgmac.h"
 
 static void xgene_enet_init_bufpool(struct xgene_enet_desc_ring *buf_pool)
@@ -813,6 +814,7 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
 		return pdata->phy_mode;
 	}
 	if (pdata->phy_mode != PHY_INTERFACE_MODE_RGMII &&
+	    pdata->phy_mode != PHY_INTERFACE_MODE_SGMII &&
 	    pdata->phy_mode != PHY_INTERFACE_MODE_XGMII) {
 		dev_err(dev, "Incorrect phy-connection-type specified\n");
 		return -ENODEV;
@@ -830,14 +832,13 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata)
 	pdata->eth_csr_addr = base_addr + BLOCK_ETH_CSR_OFFSET;
 	pdata->eth_ring_if_addr = base_addr + BLOCK_ETH_RING_IF_OFFSET;
 	pdata->eth_diag_csr_addr = base_addr + BLOCK_ETH_DIAG_CSR_OFFSET;
-	if (pdata->phy_mode == PHY_INTERFACE_MODE_RGMII) {
+	if (pdata->phy_mode == PHY_INTERFACE_MODE_RGMII ||
+	    pdata->phy_mode == PHY_INTERFACE_MODE_SGMII) {
 		pdata->mcx_mac_addr = base_addr + BLOCK_ETH_MAC_OFFSET;
 		pdata->mcx_mac_csr_addr = base_addr + BLOCK_ETH_MAC_CSR_OFFSET;
-		pdata->rm = RM3;
 	} else {
 		pdata->mcx_mac_addr = base_addr + BLOCK_AXG_MAC_OFFSET;
 		pdata->mcx_mac_csr_addr = base_addr + BLOCK_AXG_MAC_CSR_OFFSET;
-		pdata->rm = RM0;
 	}
 	pdata->rx_buff_cnt = NUM_PKT_BUF;
 
@@ -881,10 +882,17 @@ static void xgene_enet_setup_ops(struct xgene_enet_pdata *pdata)
 	case PHY_INTERFACE_MODE_RGMII:
 		pdata->mac_ops = &xgene_gmac_ops;
 		pdata->port_ops = &xgene_gport_ops;
+		pdata->rm = RM3;
+		break;
+	case PHY_INTERFACE_MODE_SGMII:
+		pdata->mac_ops = &xgene_sgmac_ops;
+		pdata->port_ops = &xgene_sgport_ops;
+		pdata->rm = RM1;
 		break;
 	default:
 		pdata->mac_ops = &xgene_xgmac_ops;
 		pdata->port_ops = &xgene_xgport_ops;
+		pdata->rm = RM0;
 		break;
 	}
 }
@@ -895,6 +903,7 @@ static int xgene_enet_probe(struct platform_device *pdev)
 	struct xgene_enet_pdata *pdata;
 	struct device *dev = &pdev->dev;
 	struct napi_struct *napi;
+	struct xgene_mac_ops *mac_ops;
 	int ret;
 
 	ndev = alloc_etherdev(sizeof(struct xgene_enet_pdata));
@@ -937,10 +946,11 @@ static int xgene_enet_probe(struct platform_device *pdev)
 
 	napi = &pdata->rx_ring->napi;
 	netif_napi_add(ndev, napi, xgene_enet_napi, NAPI_POLL_WEIGHT);
+	mac_ops = pdata->mac_ops;
 	if (pdata->phy_mode == PHY_INTERFACE_MODE_RGMII)
 		ret = xgene_enet_mdio_config(pdata);
 	else
-		INIT_DELAYED_WORK(&pdata->link_work, xgene_enet_link_state);
+		INIT_DELAYED_WORK(&pdata->link_work, mac_ops->link_state);
 
 	return ret;
 err:

drivers/net/ethernet/apm/xgene/xgene_enet_main.h

@@ -39,6 +39,9 @@
 #define NUM_PKT_BUF	64
 #define NUM_BUFPOOL	32
 
+#define PHY_POLL_LINK_ON	(10 * HZ)
+#define PHY_POLL_LINK_OFF	(PHY_POLL_LINK_ON / 5)
+
 /* software context of a descriptor ring */
 struct xgene_enet_desc_ring {
 	struct net_device *ndev;
@@ -76,6 +79,7 @@ struct xgene_mac_ops {
 	void (*tx_disable)(struct xgene_enet_pdata *pdata);
 	void (*rx_disable)(struct xgene_enet_pdata *pdata);
 	void (*set_mac_addr)(struct xgene_enet_pdata *pdata);
+	void (*link_state)(struct work_struct *work);
 };
 
 struct xgene_port_ops {
@@ -109,7 +113,6 @@ struct xgene_enet_pdata {
 	void __iomem *base_addr;
 	void __iomem *ring_csr_addr;
 	void __iomem *ring_cmd_addr;
-	u32 phy_addr;
 	int phy_mode;
 	enum xgene_enet_rm rm;
 	struct rtnl_link_stats64 stats;
@@ -118,6 +121,13 @@ struct xgene_enet_pdata {
 	struct delayed_work link_work;
 };
 
+struct xgene_indirect_ctl {
+	void __iomem *addr;
+	void __iomem *ctl;
+	void __iomem *cmd;
+	void __iomem *cmd_done;
+};
+
 /* Set the specified value into a bit-field defined by its starting position
  * and length within a single u64.
  */

drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.h

+/* Applied Micro X-Gene SoC Ethernet Driver
+ *
+ * Copyright (c) 2014, Applied Micro Circuits Corporation
+ * Authors: Iyappan Subramanian <isubramanian@apm.com>
+ *	    Keyur Chudgar <kchudgar@apm.com>
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __XGENE_ENET_SGMAC_H__
+#define __XGENE_ENET_SGMAC_H__
+
+#define PHY_ADDR(src)		(((src)<<8) & GENMASK(12, 8))
+#define REG_ADDR(src)		((src) & GENMASK(4, 0))
+#define PHY_CONTROL(src)	((src) & GENMASK(15, 0))
+#define INT_PHY_ADDR			0x1e
+#define SGMII_TBI_CONTROL_ADDR		0x44
+#define SGMII_CONTROL_ADDR		0x00
+#define SGMII_STATUS_ADDR		0x04
+#define SGMII_BASE_PAGE_ABILITY_ADDR	0x14
+#define AUTO_NEG_COMPLETE		BIT(5)
+#define LINK_STATUS			BIT(2)
+#define LINK_UP				BIT(15)
+#define MPA_IDLE_WITH_QMI_EMPTY		BIT(12)
+#define SG_RX_DV_GATE_REG_0_ADDR	0x0dfc
+
+extern struct xgene_mac_ops xgene_sgmac_ops;
+extern struct xgene_port_ops xgene_sgport_ops;
+
+#endif  /* __XGENE_ENET_SGMAC_H__ */

drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c

@@ -284,7 +284,7 @@ static void xgene_enet_shutdown(struct xgene_enet_pdata *pdata)
 	clk_disable_unprepare(pdata->clk);
 }
 
-void xgene_enet_link_state(struct work_struct *work)
+static void xgene_enet_link_state(struct work_struct *work)
 {
 	struct xgene_enet_pdata *pdata = container_of(to_delayed_work(work),
 					 struct xgene_enet_pdata, link_work);
@@ -322,6 +322,7 @@ struct xgene_mac_ops xgene_xgmac_ops = {
 	.rx_disable = xgene_xgmac_rx_disable,
 	.tx_disable = xgene_xgmac_tx_disable,
 	.set_mac_addr = xgene_xgmac_set_mac_addr,
+	.link_state = xgene_enet_link_state
 };
 
 struct xgene_port_ops xgene_xgport_ops = {

drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.h

@@ -47,10 +47,6 @@
 #define XG_ENET_SPARE_CFG_REG_1_ADDR	0x0410
 #define XGENET_RX_DV_GATE_REG_0_ADDR	0x0804
 
-#define PHY_POLL_LINK_ON	(10 * HZ)
-#define PHY_POLL_LINK_OFF	(PHY_POLL_LINK_ON / 5)
-
-void xgene_enet_link_state(struct work_struct *work);
 extern struct xgene_mac_ops xgene_xgmac_ops;
 extern struct xgene_port_ops xgene_xgport_ops;