1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Applied Micro X-Gene SoC Ethernet v2 Driver
4  *
5  * Copyright (c) 2017, Applied Micro Circuits Corporation
6  * Author(s): Iyappan Subramanian <isubramanian@apm.com>
7  *	      Keyur Chudgar <kchudgar@apm.com>
8  */
9 
10 #ifndef __XGENE_ENET_V2_MAC_H__
11 #define __XGENE_ENET_V2_MAC_H__
12 
13 /* Register offsets */
14 #define MAC_CONFIG_1		0xa000
15 #define MAC_CONFIG_2		0xa004
16 #define MII_MGMT_CONFIG		0xa020
17 #define MII_MGMT_COMMAND	0xa024
18 #define MII_MGMT_ADDRESS	0xa028
19 #define MII_MGMT_CONTROL	0xa02c
20 #define MII_MGMT_STATUS		0xa030
21 #define MII_MGMT_INDICATORS	0xa034
22 #define INTERFACE_CONTROL	0xa038
23 #define STATION_ADDR0		0xa040
24 #define STATION_ADDR1		0xa044
25 
26 #define RGMII_REG_0		0x27e0
27 #define ICM_CONFIG0_REG_0	0x2c00
28 #define ICM_CONFIG2_REG_0	0x2c08
29 #define ECM_CONFIG0_REG_0	0x2d00
30 
31 /* Register fields */
32 #define SOFT_RESET		BIT(31)
33 #define TX_EN			BIT(0)
34 #define RX_EN			BIT(2)
35 #define PAD_CRC			BIT(2)
36 #define CRC_EN			BIT(1)
37 #define FULL_DUPLEX		BIT(0)
38 
39 #define INTF_MODE_POS		8
40 #define INTF_MODE_LEN		2
41 #define HD_MODE_POS		25
42 #define HD_MODE_LEN		2
43 #define CFG_MACMODE_POS		18
44 #define CFG_MACMODE_LEN		2
45 #define CFG_WAITASYNCRD_POS	0
46 #define CFG_WAITASYNCRD_LEN	16
47 #define CFG_SPEED_125_POS	24
48 #define CFG_WFIFOFULLTHR_POS	0
49 #define CFG_WFIFOFULLTHR_LEN	7
50 #define MGMT_CLOCK_SEL_POS	0
51 #define MGMT_CLOCK_SEL_LEN	3
52 #define PHY_ADDR_POS		8
53 #define PHY_ADDR_LEN		5
54 #define REG_ADDR_POS		0
55 #define REG_ADDR_LEN		5
56 #define MII_MGMT_BUSY		BIT(0)
57 #define MII_READ_CYCLE		BIT(0)
58 #define CFG_WAITASYNCRD_EN	BIT(16)
59 
60 static inline void xgene_set_reg_bits(u32 *var, int pos, int len, u32 val)
61 {
62 	u32 mask = GENMASK(pos + len, pos);
63 
64 	*var &= ~mask;
65 	*var |= ((val << pos) & mask);
66 }
67 
68 static inline u32 xgene_get_reg_bits(u32 var, int pos, int len)
69 {
70 	u32 mask = GENMASK(pos + len, pos);
71 
72 	return (var & mask) >> pos;
73 }
74 
75 #define SET_REG_BITS(var, field, val)					\
76 	xgene_set_reg_bits(var, field ## _POS, field ## _LEN, val)
77 
78 #define SET_REG_BIT(var, field, val)					\
79 	xgene_set_reg_bits(var, field ## _POS, 1, val)
80 
81 #define GET_REG_BITS(var, field)					\
82 	xgene_get_reg_bits(var, field ## _POS, field ## _LEN)
83 
84 #define GET_REG_BIT(var, field)		((var) & (field))
85 
86 struct xge_pdata;
87 
88 void xge_mac_reset(struct xge_pdata *pdata);
89 void xge_mac_set_speed(struct xge_pdata *pdata);
90 void xge_mac_enable(struct xge_pdata *pdata);
91 void xge_mac_disable(struct xge_pdata *pdata);
92 void xge_mac_init(struct xge_pdata *pdata);
93 void xge_mac_set_station_addr(struct xge_pdata *pdata);
94 
95 #endif /* __XGENE_ENET_V2_MAC_H__ */
96