keystone2: net: add keystone ethernet driver

Ethernet driver configures the CPSW, SGMI and Phy and uses
the the Navigator APIs. The driver supports 4 Ethernet ports and
can work with only one port at a time.

Port configurations are defined in board.c.

Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: WingMan Kwok <w-kwok2@ti.com>

1 files changed, 240 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-keystone/emac_defs.h b/arch/arm/include/asm/arch-keystone/emac_defs.h
new file mode 100644
index 0000000000..0aa2f89d78
--- /dev/null
+++ b/arch/arm/include/asm/arch-keystone/emac_defs.h
@@ -0,0 +1,240 @@
+/*
+ * emac definitions for keystone2 devices
+ *
+ * (C) Copyright 2012-2014
+ *     Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _EMAC_DEFS_H_
+#define _EMAC_DEFS_H_
+
+#include <asm/arch/hardware.h>
+#include <asm/io.h>
+
+#define DEVICE_REG32_R(a)               readl(a)
+#define DEVICE_REG32_W(a, v)            writel(v, a)
+
+#define EMAC_EMACSL_BASE_ADDR           (KS2_PASS_BASE + 0x00090900)
+#define EMAC_MDIO_BASE_ADDR             (KS2_PASS_BASE + 0x00090300)
+#define EMAC_SGMII_BASE_ADDR            (KS2_PASS_BASE + 0x00090100)
+
+#define KEYSTONE2_EMAC_GIG_ENABLE
+
+#define MAC_ID_BASE_ADDR                (KS2_DEVICE_STATE_CTRL_BASE + 0x110)
+
+#ifdef CONFIG_SOC_K2HK
+/* MDIO module input frequency */
+#define EMAC_MDIO_BUS_FREQ              (clk_get_rate(pass_pll_clk))
+/* MDIO clock output frequency */
+#define EMAC_MDIO_CLOCK_FREQ            1000000		/* 1.0 MHz */
+#endif
+
+/* MII Status Register */
+#define MII_STATUS_REG                  1
+#define MII_STATUS_LINK_MASK            (0x4)
+
+/* Marvell 88E1111 PHY ID */
+#define PHY_MARVELL_88E1111             (0x01410cc0)
+
+#define MDIO_CONTROL_IDLE               (0x80000000)
+#define MDIO_CONTROL_ENABLE             (0x40000000)
+#define MDIO_CONTROL_FAULT_ENABLE       (0x40000)
+#define MDIO_CONTROL_FAULT              (0x80000)
+#define MDIO_USERACCESS0_GO             (0x80000000)
+#define MDIO_USERACCESS0_WRITE_READ     (0x0)
+#define MDIO_USERACCESS0_WRITE_WRITE    (0x40000000)
+#define MDIO_USERACCESS0_ACK            (0x20000000)
+
+#define EMAC_MACCONTROL_MIIEN_ENABLE       (0x20)
+#define EMAC_MACCONTROL_FULLDUPLEX_ENABLE  (0x1)
+#define EMAC_MACCONTROL_GIGABIT_ENABLE     (1 << 7)
+#define EMAC_MACCONTROL_GIGFORCE           (1 << 17)
+#define EMAC_MACCONTROL_RMIISPEED_100      (1 << 15)
+
+#define EMAC_MIN_ETHERNET_PKT_SIZE         60
+
+struct mac_sl_cfg {
+	u_int32_t max_rx_len;	/* Maximum receive packet length. */
+	u_int32_t ctl;		/* Control bitfield */
+};
+
+/*
+ * Definition: Control bitfields used in the ctl field of hwGmacSlCfg_t
+ */
+#define GMACSL_RX_ENABLE_RCV_CONTROL_FRAMES       (1 << 24)
+#define GMACSL_RX_ENABLE_RCV_SHORT_FRAMES         (1 << 23)
+#define GMACSL_RX_ENABLE_RCV_ERROR_FRAMES         (1 << 22)
+#define GMACSL_RX_ENABLE_EXT_CTL                  (1 << 18)
+#define GMACSL_RX_ENABLE_GIG_FORCE                (1 << 17)
+#define GMACSL_RX_ENABLE_IFCTL_B                  (1 << 16)
+#define GMACSL_RX_ENABLE_IFCTL_A                  (1 << 15)
+#define GMACSL_RX_ENABLE_CMD_IDLE                 (1 << 11)
+#define GMACSL_TX_ENABLE_SHORT_GAP                (1 << 10)
+#define GMACSL_ENABLE_GIG_MODE                    (1 <<  7)
+#define GMACSL_TX_ENABLE_PACE                     (1 <<  6)
+#define GMACSL_ENABLE                             (1 <<  5)
+#define GMACSL_TX_ENABLE_FLOW_CTL                 (1 <<  4)
+#define GMACSL_RX_ENABLE_FLOW_CTL                 (1 <<  3)
+#define GMACSL_ENABLE_LOOPBACK                    (1 <<  1)
+#define GMACSL_ENABLE_FULL_DUPLEX                 (1 <<  0)
+
+/*
+ * DEFINTITION: function return values
+ */
+#define GMACSL_RET_OK                        0
+#define GMACSL_RET_INVALID_PORT             -1
+#define GMACSL_RET_WARN_RESET_INCOMPLETE    -2
+#define GMACSL_RET_WARN_MAXLEN_TOO_BIG      -3
+#define GMACSL_RET_CONFIG_FAIL_RESET_ACTIVE -4
+
+/* Register offsets */
+#define CPGMACSL_REG_ID         0x00
+#define CPGMACSL_REG_CTL        0x04
+#define CPGMACSL_REG_STATUS     0x08
+#define CPGMACSL_REG_RESET      0x0c
+#define CPGMACSL_REG_MAXLEN     0x10
+#define CPGMACSL_REG_BOFF       0x14
+#define CPGMACSL_REG_RX_PAUSE   0x18
+#define CPGMACSL_REG_TX_PAURSE  0x1c
+#define CPGMACSL_REG_EM_CTL     0x20
+#define CPGMACSL_REG_PRI        0x24
+
+/* Soft reset register values */
+#define CPGMAC_REG_RESET_VAL_RESET_MASK      (1 << 0)
+#define CPGMAC_REG_RESET_VAL_RESET           (1 << 0)
+
+/* Maxlen register values */
+#define CPGMAC_REG_MAXLEN_LEN                0x3fff
+
+/* Control bitfields */
+#define CPSW_CTL_P2_PASS_PRI_TAGGED     (1 << 5)
+#define CPSW_CTL_P1_PASS_PRI_TAGGED     (1 << 4)
+#define CPSW_CTL_P0_PASS_PRI_TAGGED     (1 << 3)
+#define CPSW_CTL_P0_ENABLE              (1 << 2)
+#define CPSW_CTL_VLAN_AWARE             (1 << 1)
+#define CPSW_CTL_FIFO_LOOPBACK          (1 << 0)
+
+#define DEVICE_CPSW_NUM_PORTS       5                    /* 5 switch ports */
+#define DEVICE_CPSW_BASE            (0x02090800)
+#define target_get_switch_ctl()     CPSW_CTL_P0_ENABLE   /* Enable port 0 */
+#define SWITCH_MAX_PKT_SIZE         9000
+
+/* Register offsets */
+#define CPSW_REG_CTL                0x004
+#define CPSW_REG_STAT_PORT_EN       0x00c
+#define CPSW_REG_MAXLEN             0x040
+#define CPSW_REG_ALE_CONTROL        0x608
+#define CPSW_REG_ALE_PORTCTL(x)     (0x640 + (x)*4)
+
+/* Register values */
+#define CPSW_REG_VAL_STAT_ENABLE_ALL             0xf
+#define CPSW_REG_VAL_ALE_CTL_RESET_AND_ENABLE    ((u_int32_t)0xc0000000)
+#define CPSW_REG_VAL_ALE_CTL_BYPASS              ((u_int32_t)0x00000010)
+#define CPSW_REG_VAL_PORTCTL_FORWARD_MODE        0x3
+
+#define SGMII_REG_STATUS_LOCK           BIT(4)
+#define SGMII_REG_STATUS_LINK           BIT(0)
+#define SGMII_REG_STATUS_AUTONEG        BIT(2)
+#define SGMII_REG_CONTROL_AUTONEG       BIT(0)
+#define SGMII_REG_CONTROL_MASTER        BIT(5)
+#define	SGMII_REG_MR_ADV_ENABLE         BIT(0)
+#define	SGMII_REG_MR_ADV_LINK           BIT(15)
+#define	SGMII_REG_MR_ADV_FULL_DUPLEX    BIT(12)
+#define SGMII_REG_MR_ADV_GIG_MODE       BIT(11)
+
+#define SGMII_LINK_MAC_MAC_AUTONEG      0
+#define SGMII_LINK_MAC_PHY              1
+#define SGMII_LINK_MAC_MAC_FORCED       2
+#define SGMII_LINK_MAC_FIBER            3
+#define SGMII_LINK_MAC_PHY_FORCED       4
+
+#define TARGET_SGMII_BASE              KS2_PASS_BASE + 0x00090100
+#define TARGET_SGMII_BASE_ADDRESSES    {KS2_PASS_BASE + 0x00090100, \
+					KS2_PASS_BASE + 0x00090200, \
+					KS2_PASS_BASE + 0x00090400, \
+					KS2_PASS_BASE + 0x00090500}
+
+#define SGMII_OFFSET(x)	((x <= 1) ? (x * 0x100) : ((x * 0x100) + 0x100))
+
+/*
+ * SGMII registers
+ */
+#define SGMII_IDVER_REG(x)    (TARGET_SGMII_BASE + SGMII_OFFSET(x) + 0x000)
+#define SGMII_SRESET_REG(x)   (TARGET_SGMII_BASE + SGMII_OFFSET(x) + 0x004)
+#define SGMII_CTL_REG(x)      (TARGET_SGMII_BASE + SGMII_OFFSET(x) + 0x010)
+#define SGMII_STATUS_REG(x)   (TARGET_SGMII_BASE + SGMII_OFFSET(x) + 0x014)
+#define SGMII_MRADV_REG(x)    (TARGET_SGMII_BASE + SGMII_OFFSET(x) + 0x018)
+#define SGMII_LPADV_REG(x)    (TARGET_SGMII_BASE + SGMII_OFFSET(x) + 0x020)
+#define SGMII_TXCFG_REG(x)    (TARGET_SGMII_BASE + SGMII_OFFSET(x) + 0x030)
+#define SGMII_RXCFG_REG(x)    (TARGET_SGMII_BASE + SGMII_OFFSET(x) + 0x034)
+#define SGMII_AUXCFG_REG(x)   (TARGET_SGMII_BASE + SGMII_OFFSET(x) + 0x038)
+
+#define DEVICE_EMACSL_BASE(x)      (KS2_PASS_BASE + 0x00090900 + (x) * 0x040)
+#define DEVICE_N_GMACSL_PORTS           4
+#define DEVICE_EMACSL_RESET_POLL_COUNT  100
+
+#define DEVICE_PSTREAM_CFG_REG_ADDR                 (KS2_PASS_BASE + 0x604)
+
+#ifdef CONFIG_SOC_K2HK
+#define DEVICE_PSTREAM_CFG_REG_VAL_ROUTE_CPPI      0x06060606
+#endif
+
+#define hw_config_streaming_switch() \
+	DEVICE_REG32_W(DEVICE_PSTREAM_CFG_REG_ADDR, \
+		       DEVICE_PSTREAM_CFG_REG_VAL_ROUTE_CPPI);
+
+/* EMAC MDIO Registers Structure */
+struct mdio_regs {
+	dv_reg		version;
+	dv_reg		control;
+	dv_reg		alive;
+	dv_reg		link;
+	dv_reg		linkintraw;
+	dv_reg		linkintmasked;
+	u_int8_t	rsvd0[8];
+	dv_reg		userintraw;
+	dv_reg		userintmasked;
+	dv_reg		userintmaskset;
+	dv_reg		userintmaskclear;
+	u_int8_t	rsvd1[80];
+	dv_reg		useraccess0;
+	dv_reg		userphysel0;
+	dv_reg		useraccess1;
+	dv_reg		userphysel1;
+};
+
+/* Ethernet MAC Registers Structure */
+struct emac_regs {
+	dv_reg		idver;
+	dv_reg		maccontrol;
+	dv_reg		macstatus;
+	dv_reg		soft_reset;
+	dv_reg		rx_maxlen;
+	u32		rsvd0;
+	dv_reg		rx_pause;
+	dv_reg		tx_pause;
+	dv_reg		emcontrol;
+	dv_reg		pri_map;
+	u32		rsvd1[6];
+};
+
+#define SGMII_ACCESS(port, reg) \
+	*((volatile unsigned int *)(sgmiis[port] + reg))
+
+struct eth_priv_t {
+	char	int_name[32];
+	int	rx_flow;
+	int	phy_addr;
+	int	slave_port;
+	int	sgmii_link_type;
+};
+
+extern struct eth_priv_t eth_priv_cfg[];
+
+int keystone2_emac_initialize(struct eth_priv_t *eth_priv);
+void sgmii_serdes_setup_156p25mhz(void);
+void sgmii_serdes_shutdown(void);
+
+#endif  /* _EMAC_DEFS_H_ */