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Alex Marginean120b5ef2019-07-03 12:11:40 +03001/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * ENETC ethernet controller driver
4 * Copyright 2017-2019 NXP
5 */
6
7#ifndef _ENETC_H
8#define _ENETC_H
9
10#define enetc_dbg(dev, fmt, args...) debug("%s:" fmt, dev->name, ##args)
11
12/* PCI function IDs */
13#define PCI_DEVICE_ID_ENETC_ETH 0xE100
Alex Marginean1d995342019-07-03 12:11:41 +030014#define PCI_DEVICE_ID_ENETC_MDIO 0xEE01
Alex Marginean120b5ef2019-07-03 12:11:40 +030015
16/* ENETC Ethernet controller registers */
17/* Station interface register offsets */
18#define ENETC_SIMR 0x000
19#define ENETC_SIMR_EN BIT(31)
20#define ENETC_SICAR0 0x040
21/* write cache cfg: snoop, no allocate, data & BD coherent */
22#define ENETC_SICAR_WR_CFG 0x6767
23/* read cache cfg: coherent copy, look up, don't alloc in cache */
24#define ENETC_SICAR_RD_CFG 0x27270000
25#define ENETC_SIROCT 0x300
26#define ENETC_SIRFRM 0x308
27#define ENETC_SITOCT 0x320
28#define ENETC_SITFRM 0x328
29
30/* Rx/Tx Buffer Descriptor Ring registers */
31enum enetc_bdr_type {TX, RX};
32#define ENETC_BDR(type, n, off) (0x8000 + (type) * 0x100 + (n) * 0x200 + (off))
33#define ENETC_BDR_IDX_MASK 0xffff
34
35/* Rx BDR reg offsets */
36#define ENETC_RBMR 0x00
37#define ENETC_RBMR_EN BIT(31)
38#define ENETC_RBBSR 0x08
39/* initial consumer index for Rx BDR */
40#define ENETC_RBCIR 0x0c
41#define ENETC_RBBAR0 0x10
42#define ENETC_RBBAR1 0x14
43#define ENETC_RBPIR 0x18
44#define ENETC_RBLENR 0x20
45
46/* Tx BDR reg offsets */
47#define ENETC_TBMR 0x00
48#define ENETC_TBMR_EN BIT(31)
49#define ENETC_TBBAR0 0x10
50#define ENETC_TBBAR1 0x14
51#define ENETC_TBPIR 0x18
52#define ENETC_TBCIR 0x1c
53#define ENETC_TBLENR 0x20
54
55/* Port registers offset */
56#define ENETC_PORT_REGS_OFF 0x10000
57
58/* Port registers */
59#define ENETC_PMR 0x0000
60#define ENETC_PMR_SI0_EN BIT(16)
61#define ENETC_PSIPMMR 0x0018
62#define ENETC_PSIPMAR0 0x0100
63#define ENETC_PSIPMAR1 0x0104
Alex Margineane4aafd52019-07-03 12:11:42 +030064#define ENETC_PCAPR0 0x0900
65#define ENETC_PCAPRO_MDIO BIT(11)
Alex Marginean120b5ef2019-07-03 12:11:40 +030066#define ENETC_PSICFGR(n) (0x0940 + (n) * 0x10)
67#define ENETC_PSICFGR_SET_TXBDR(val) ((val) & 0xff)
68#define ENETC_PSICFGR_SET_RXBDR(val) (((val) & 0xff) << 16)
69/* MAC configuration */
70#define ENETC_PM_CC 0x8008
71#define ENETC_PM_CC_DEFAULT 0x0810
72#define ENETC_PM_CC_RX_TX_EN 0x8813
73#define ENETC_PM_MAXFRM 0x8014
74#define ENETC_RX_MAXFRM_SIZE PKTSIZE_ALIGN
Alex Margineane4aafd52019-07-03 12:11:42 +030075#define ENETC_PM_IMDIO_BASE 0x8030
76#define ENETC_PM_IF_MODE 0x8300
77#define ENETC_PM_IF_MODE_RG BIT(2)
78#define ENETC_PM_IF_MODE_AN_ENA BIT(15)
79#define ENETC_PM_IF_IFMODE_MASK GENMASK(1, 0)
Alex Marginean120b5ef2019-07-03 12:11:40 +030080
81/* buffer descriptors count must be multiple of 8 and aligned to 128 bytes */
82#define ENETC_BD_CNT CONFIG_SYS_RX_ETH_BUFFER
83#define ENETC_BD_ALIGN 128
84
85/* single pair of Rx/Tx rings */
86#define ENETC_RX_BDR_CNT 1
87#define ENETC_TX_BDR_CNT 1
88#define ENETC_RX_BDR_ID 0
89#define ENETC_TX_BDR_ID 0
90
91/* Tx buffer descriptor */
92struct enetc_tx_bd {
93 __le64 addr;
94 __le16 buf_len;
95 __le16 frm_len;
96 __le16 err_csum;
97 __le16 flags;
98};
99
100#define ENETC_TXBD_FLAGS_F BIT(15)
101#define ENETC_POLL_TRIES 32000
102
103/* Rx buffer descriptor */
104union enetc_rx_bd {
105 /* SW provided BD format */
106 struct {
107 __le64 addr;
108 u8 reserved[8];
109 } w;
110
111 /* ENETC returned BD format */
112 struct {
113 __le16 inet_csum;
114 __le16 parse_summary;
115 __le32 rss_hash;
116 __le16 buf_len;
117 __le16 vlan_opt;
118 union {
119 struct {
120 __le16 flags;
121 __le16 error;
122 };
123 __le32 lstatus;
124 };
125 } r;
126};
127
128#define ENETC_RXBD_STATUS_R(status) (((status) >> 30) & 0x1)
129#define ENETC_RXBD_STATUS_F(status) (((status) >> 31) & 0x1)
130#define ENETC_RXBD_STATUS_ERRORS(status) (((status) >> 16) & 0xff)
131#define ENETC_RXBD_STATUS(flags) ((flags) << 16)
132
133/* Tx/Rx ring info */
134struct bd_ring {
135 void *cons_idx;
136 void *prod_idx;
137 /* next BD index to use */
138 int next_prod_idx;
139 int next_cons_idx;
140 int bd_count;
141};
142
143/* ENETC private structure */
144struct enetc_priv {
145 struct enetc_tx_bd *enetc_txbd;
146 union enetc_rx_bd *enetc_rxbd;
147
148 void *regs_base; /* base ENETC registers */
149 void *port_regs; /* base ENETC port registers */
150
151 /* Rx/Tx buffer descriptor rings info */
152 struct bd_ring tx_bdr;
153 struct bd_ring rx_bdr;
Alex Marginean1d995342019-07-03 12:11:41 +0300154
155 int if_type;
Alex Margineane4aafd52019-07-03 12:11:42 +0300156 struct mii_dev imdio;
Alex Marginean120b5ef2019-07-03 12:11:40 +0300157};
158
159/* register accessors */
160#define enetc_read_reg(x) readl((x))
161#define enetc_write_reg(x, val) writel((val), (x))
162#define enetc_read(priv, off) enetc_read_reg((priv)->regs_base + (off))
163#define enetc_write(priv, off, v) \
164 enetc_write_reg((priv)->regs_base + (off), v)
165
166/* port register accessors */
167#define enetc_port_regs(priv, off) ((priv)->port_regs + (off))
168#define enetc_read_port(priv, off) \
169 enetc_read_reg(enetc_port_regs((priv), (off)))
170#define enetc_write_port(priv, off, v) \
171 enetc_write_reg(enetc_port_regs((priv), (off)), v)
172
173/* BDR register accessors, see ENETC_BDR() */
174#define enetc_bdr_read(priv, t, n, off) \
175 enetc_read(priv, ENETC_BDR(t, n, off))
176#define enetc_bdr_write(priv, t, n, off, val) \
177 enetc_write(priv, ENETC_BDR(t, n, off), val)
178
Alex Margineane4aafd52019-07-03 12:11:42 +0300179/* PCS / internal SoC PHY ID, it defaults to 0 on all interfaces */
180#define ENETC_PCS_PHY_ADDR 0
181
182/* PCS registers */
183#define ENETC_PCS_CR 0x00
184#define ENETC_PCS_CR_RESET_AN 0x1200
185#define ENETC_PCS_CR_DEF_VAL 0x0140
Alex Marginean9bc07e812019-07-15 11:48:47 +0300186#define ENETC_PCS_CR_RST BIT(15)
Alex Margineane4aafd52019-07-03 12:11:42 +0300187#define ENETC_PCS_DEV_ABILITY 0x04
188#define ENETC_PCS_DEV_ABILITY_SGMII 0x4001
189#define ENETC_PCS_DEV_ABILITY_SXGMII 0x5001
190#define ENETC_PCS_LINK_TIMER1 0x12
191#define ENETC_PCS_LINK_TIMER1_VAL 0x06a0
192#define ENETC_PCS_LINK_TIMER2 0x13
193#define ENETC_PCS_LINK_TIMER2_VAL 0x0003
194#define ENETC_PCS_IF_MODE 0x14
Alex Marginean9bc07e812019-07-15 11:48:47 +0300195#define ENETC_PCS_IF_MODE_SGMII BIT(0)
196#define ENETC_PCS_IF_MODE_SGMII_AN BIT(1)
197#define ENETC_PCS_IF_MODE_SPEED_1G BIT(3)
Alex Margineane4aafd52019-07-03 12:11:42 +0300198
199/* PCS replicator block for USXGMII */
200#define ENETC_PCS_DEVAD_REPL 0x1f
201
Alex Marginean1d995342019-07-03 12:11:41 +0300202/* ENETC external MDIO registers */
203#define ENETC_MDIO_BASE 0x1c00
204#define ENETC_MDIO_CFG 0x00
205#define ENETC_EMDIO_CFG_C22 0x00809508
206#define ENETC_EMDIO_CFG_C45 0x00809548
207#define ENETC_EMDIO_CFG_RD_ER BIT(1)
208#define ENETC_EMDIO_CFG_BSY BIT(0)
209#define ENETC_MDIO_CTL 0x04
210#define ENETC_MDIO_CTL_READ BIT(15)
211#define ENETC_MDIO_DATA 0x08
212#define ENETC_MDIO_STAT 0x0c
213
214#define ENETC_MDIO_READ_ERR 0xffff
215
216struct enetc_mdio_priv {
217 void *regs_base;
218};
219
Alex Margineane4aafd52019-07-03 12:11:42 +0300220/*
221 * these functions are implemented by ENETC_MDIO and are re-used by ENETC driver
222 * to drive serdes / internal SoC PHYs
223 */
224int enetc_mdio_read_priv(struct enetc_mdio_priv *priv, int addr, int devad,
225 int reg);
226int enetc_mdio_write_priv(struct enetc_mdio_priv *priv, int addr, int devad,
227 int reg, u16 val);
228
Alex Marginean120b5ef2019-07-03 12:11:40 +0300229#endif /* _ENETC_H */