mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 13:14:27 +00:00
71a2d1e7b8
This driver is used for the Ethernet switch integrated into LS1028A NXP. Felix on LS1028A has 4 front panel ports and two internal ports, I/O to/from the switch is done through an ENETC Ethernet interface. The 4 front panel ports are available as Ethernet interfaces and can be used with the typical network commands like tftp. Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com> Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
239 lines
6.5 KiB
C
239 lines
6.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* ENETC ethernet controller driver
|
|
* Copyright 2017-2019 NXP
|
|
*/
|
|
|
|
#ifndef _ENETC_H
|
|
#define _ENETC_H
|
|
|
|
#include <linux/bitops.h>
|
|
#define enetc_dbg(dev, fmt, args...) debug("%s:" fmt, dev->name, ##args)
|
|
|
|
/* PCI function IDs */
|
|
#define PCI_DEVICE_ID_ENETC_ETH 0xE100
|
|
#define PCI_DEVICE_ID_ENETC_MDIO 0xEE01
|
|
|
|
/* ENETC Ethernet controller registers */
|
|
/* Station interface register offsets */
|
|
#define ENETC_SIMR 0x000
|
|
#define ENETC_SIMR_EN BIT(31)
|
|
#define ENETC_SICAR0 0x040
|
|
/* write cache cfg: snoop, no allocate, data & BD coherent */
|
|
#define ENETC_SICAR_WR_CFG 0x6767
|
|
/* read cache cfg: coherent copy, look up, don't alloc in cache */
|
|
#define ENETC_SICAR_RD_CFG 0x27270000
|
|
#define ENETC_SIROCT 0x300
|
|
#define ENETC_SIRFRM 0x308
|
|
#define ENETC_SITOCT 0x320
|
|
#define ENETC_SITFRM 0x328
|
|
|
|
/* Rx/Tx Buffer Descriptor Ring registers */
|
|
enum enetc_bdr_type {TX, RX};
|
|
#define ENETC_BDR(type, n, off) (0x8000 + (type) * 0x100 + (n) * 0x200 + (off))
|
|
#define ENETC_BDR_IDX_MASK 0xffff
|
|
|
|
/* Rx BDR reg offsets */
|
|
#define ENETC_RBMR 0x00
|
|
#define ENETC_RBMR_EN BIT(31)
|
|
#define ENETC_RBBSR 0x08
|
|
/* initial consumer index for Rx BDR */
|
|
#define ENETC_RBCIR 0x0c
|
|
#define ENETC_RBBAR0 0x10
|
|
#define ENETC_RBBAR1 0x14
|
|
#define ENETC_RBPIR 0x18
|
|
#define ENETC_RBLENR 0x20
|
|
|
|
/* Tx BDR reg offsets */
|
|
#define ENETC_TBMR 0x00
|
|
#define ENETC_TBMR_EN BIT(31)
|
|
#define ENETC_TBBAR0 0x10
|
|
#define ENETC_TBBAR1 0x14
|
|
#define ENETC_TBPIR 0x18
|
|
#define ENETC_TBCIR 0x1c
|
|
#define ENETC_TBLENR 0x20
|
|
|
|
/* Port registers offset */
|
|
#define ENETC_PORT_REGS_OFF 0x10000
|
|
|
|
/* Port registers */
|
|
#define ENETC_PMR 0x0000
|
|
#define ENETC_PMR_SI0_EN BIT(16)
|
|
#define ENETC_PSIPMMR 0x0018
|
|
#define ENETC_PSIPMAR0 0x0100
|
|
#define ENETC_PSIPMAR1 0x0104
|
|
#define ENETC_PCAPR0 0x0900
|
|
#define ENETC_PCAPRO_MDIO BIT(11)
|
|
#define ENETC_PSICFGR(n) (0x0940 + (n) * 0x10)
|
|
#define ENETC_PSICFGR_SET_TXBDR(val) ((val) & 0xff)
|
|
#define ENETC_PSICFGR_SET_RXBDR(val) (((val) & 0xff) << 16)
|
|
/* MAC configuration */
|
|
#define ENETC_PM_CC 0x8008
|
|
#define ENETC_PM_CC_DEFAULT 0x0810
|
|
#define ENETC_PM_CC_RX_TX_EN 0x8813
|
|
#define ENETC_PM_MAXFRM 0x8014
|
|
#define ENETC_RX_MAXFRM_SIZE PKTSIZE_ALIGN
|
|
#define ENETC_PM_IMDIO_BASE 0x8030
|
|
#define ENETC_PM_IF_MODE 0x8300
|
|
#define ENETC_PM_IF_MODE_RG BIT(2)
|
|
#define ENETC_PM_IF_MODE_AN_ENA BIT(15)
|
|
#define ENETC_PM_IF_IFMODE_MASK GENMASK(1, 0)
|
|
|
|
/* buffer descriptors count must be multiple of 8 and aligned to 128 bytes */
|
|
#define ENETC_BD_CNT CONFIG_SYS_RX_ETH_BUFFER
|
|
#define ENETC_BD_ALIGN 128
|
|
|
|
/* single pair of Rx/Tx rings */
|
|
#define ENETC_RX_BDR_CNT 1
|
|
#define ENETC_TX_BDR_CNT 1
|
|
#define ENETC_RX_BDR_ID 0
|
|
#define ENETC_TX_BDR_ID 0
|
|
|
|
/* Tx buffer descriptor */
|
|
struct enetc_tx_bd {
|
|
__le64 addr;
|
|
__le16 buf_len;
|
|
__le16 frm_len;
|
|
__le16 err_csum;
|
|
__le16 flags;
|
|
};
|
|
|
|
#define ENETC_TXBD_FLAGS_F BIT(15)
|
|
#define ENETC_POLL_TRIES 32000
|
|
|
|
/* Rx buffer descriptor */
|
|
union enetc_rx_bd {
|
|
/* SW provided BD format */
|
|
struct {
|
|
__le64 addr;
|
|
u8 reserved[8];
|
|
} w;
|
|
|
|
/* ENETC returned BD format */
|
|
struct {
|
|
__le16 inet_csum;
|
|
__le16 parse_summary;
|
|
__le32 rss_hash;
|
|
__le16 buf_len;
|
|
__le16 vlan_opt;
|
|
union {
|
|
struct {
|
|
__le16 flags;
|
|
__le16 error;
|
|
};
|
|
__le32 lstatus;
|
|
};
|
|
} r;
|
|
};
|
|
|
|
#define ENETC_RXBD_STATUS_R(status) (((status) >> 30) & 0x1)
|
|
#define ENETC_RXBD_STATUS_F(status) (((status) >> 31) & 0x1)
|
|
#define ENETC_RXBD_STATUS_ERRORS(status) (((status) >> 16) & 0xff)
|
|
#define ENETC_RXBD_STATUS(flags) ((flags) << 16)
|
|
|
|
/* Tx/Rx ring info */
|
|
struct bd_ring {
|
|
void *cons_idx;
|
|
void *prod_idx;
|
|
/* next BD index to use */
|
|
int next_prod_idx;
|
|
int next_cons_idx;
|
|
int bd_count;
|
|
};
|
|
|
|
/* ENETC private structure */
|
|
struct enetc_priv {
|
|
struct enetc_tx_bd *enetc_txbd;
|
|
union enetc_rx_bd *enetc_rxbd;
|
|
|
|
void *regs_base; /* base ENETC registers */
|
|
void *port_regs; /* base ENETC port registers */
|
|
|
|
/* Rx/Tx buffer descriptor rings info */
|
|
struct bd_ring tx_bdr;
|
|
struct bd_ring rx_bdr;
|
|
|
|
int if_type;
|
|
struct mii_dev imdio;
|
|
struct phy_device *phy;
|
|
};
|
|
|
|
/* register accessors */
|
|
#define enetc_read_reg(x) readl((x))
|
|
#define enetc_write_reg(x, val) writel((val), (x))
|
|
#define enetc_read(priv, off) enetc_read_reg((priv)->regs_base + (off))
|
|
#define enetc_write(priv, off, v) \
|
|
enetc_write_reg((priv)->regs_base + (off), v)
|
|
|
|
/* port register accessors */
|
|
#define enetc_port_regs(priv, off) ((priv)->port_regs + (off))
|
|
#define enetc_read_port(priv, off) \
|
|
enetc_read_reg(enetc_port_regs((priv), (off)))
|
|
#define enetc_write_port(priv, off, v) \
|
|
enetc_write_reg(enetc_port_regs((priv), (off)), v)
|
|
|
|
/* BDR register accessors, see ENETC_BDR() */
|
|
#define enetc_bdr_read(priv, t, n, off) \
|
|
enetc_read(priv, ENETC_BDR(t, n, off))
|
|
#define enetc_bdr_write(priv, t, n, off, val) \
|
|
enetc_write(priv, ENETC_BDR(t, n, off), val)
|
|
|
|
/* PCS / internal SoC PHY ID, it defaults to 0 on all interfaces */
|
|
#define ENETC_PCS_PHY_ADDR 0
|
|
|
|
/* PCS registers */
|
|
#define ENETC_PCS_CR 0x00
|
|
#define ENETC_PCS_CR_RESET_AN 0x1200
|
|
#define ENETC_PCS_CR_DEF_VAL 0x0140
|
|
#define ENETC_PCS_CR_RST BIT(15)
|
|
#define ENETC_PCS_DEV_ABILITY 0x04
|
|
#define ENETC_PCS_DEV_ABILITY_SGMII 0x4001
|
|
#define ENETC_PCS_DEV_ABILITY_SXGMII 0x5001
|
|
#define ENETC_PCS_LINK_TIMER1 0x12
|
|
#define ENETC_PCS_LINK_TIMER1_VAL 0x06a0
|
|
#define ENETC_PCS_LINK_TIMER2 0x13
|
|
#define ENETC_PCS_LINK_TIMER2_VAL 0x0003
|
|
#define ENETC_PCS_IF_MODE 0x14
|
|
#define ENETC_PCS_IF_MODE_SGMII BIT(0)
|
|
#define ENETC_PCS_IF_MODE_SGMII_AN BIT(1)
|
|
#define ENETC_PCS_IF_MODE_SPEED_1G BIT(3)
|
|
|
|
/* PCS replicator block for USXGMII */
|
|
#define ENETC_PCS_DEVAD_REPL 0x1f
|
|
|
|
#define ENETC_PCS_REPL_LINK_TIMER_1 0x12
|
|
#define ENETC_PCS_REPL_LINK_TIMER_1_DEF 0x0003
|
|
#define ENETC_PCS_REPL_LINK_TIMER_2 0x13
|
|
#define ENETC_PCS_REPL_LINK_TIMER_2_DEF 0x06a0
|
|
|
|
/* ENETC external MDIO registers */
|
|
#define ENETC_MDIO_BASE 0x1c00
|
|
#define ENETC_MDIO_CFG 0x00
|
|
#define ENETC_EMDIO_CFG_C22 0x00809508
|
|
#define ENETC_EMDIO_CFG_C45 0x00809548
|
|
#define ENETC_EMDIO_CFG_RD_ER BIT(1)
|
|
#define ENETC_EMDIO_CFG_BSY BIT(0)
|
|
#define ENETC_MDIO_CTL 0x04
|
|
#define ENETC_MDIO_CTL_READ BIT(15)
|
|
#define ENETC_MDIO_DATA 0x08
|
|
#define ENETC_MDIO_STAT 0x0c
|
|
|
|
#define ENETC_MDIO_READ_ERR 0xffff
|
|
|
|
struct enetc_mdio_priv {
|
|
void *regs_base;
|
|
};
|
|
|
|
/*
|
|
* these functions are implemented by ENETC_MDIO and are re-used by ENETC driver
|
|
* to drive serdes / internal SoC PHYs
|
|
*/
|
|
int enetc_mdio_read_priv(struct enetc_mdio_priv *priv, int addr, int devad,
|
|
int reg);
|
|
int enetc_mdio_write_priv(struct enetc_mdio_priv *priv, int addr, int devad,
|
|
int reg, u16 val);
|
|
|
|
/* sets up primary MAC addresses in DT/IERB */
|
|
void fdt_fixup_enetc_mac(void *blob);
|
|
|
|
#endif /* _ENETC_H */
|