diff options
Diffstat (limited to 'drivers/net/fsl_enetc.h')
| -rw-r--r-- | drivers/net/fsl_enetc.h | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/drivers/net/fsl_enetc.h b/drivers/net/fsl_enetc.h new file mode 100644 index 0000000000..0bb4cdff47 --- /dev/null +++ b/drivers/net/fsl_enetc.h @@ -0,0 +1,229 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * ENETC ethernet controller driver + * Copyright 2017-2019 NXP + */ + +#ifndef _ENETC_H +#define _ENETC_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; +}; + +/* 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 + +/* 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); + +#endif /* _ENETC_H */ |