1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2018 MediaTek Inc.
* Author: Weijie Gao <weijie.gao@mediatek.com>
*/
#ifndef _MT753X_H_
#define _MT753X_H_
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/netdevice.h>
#include <linux/of_mdio.h>
#include <linux/workqueue.h>
#include <linux/gpio/consumer.h>
#ifdef CONFIG_SWCONFIG
#include <linux/switch.h>
#endif
#include "mt753x_vlan.h"
#define MT753X_DFL_CPU_PORT 6
#define MT753X_NUM_PHYS 5
#define MT753X_DFL_SMI_ADDR 0x1f
#define MT753X_SMI_ADDR_MASK 0x1f
struct gsw_mt753x;
enum mt753x_model {
MT7530 = 0x7530,
MT7531 = 0x7531
};
struct mt753x_port_cfg {
struct device_node *np;
int phy_mode;
u32 enabled: 1;
u32 force_link: 1;
u32 speed: 2;
u32 duplex: 1;
};
struct mt753x_phy {
struct gsw_mt753x *gsw;
struct net_device netdev;
struct phy_device *phydev;
};
struct gsw_mt753x {
u32 id;
struct device *dev;
struct mii_bus *host_bus;
struct mii_bus *gphy_bus;
struct mutex mii_lock; /* MII access lock */
u32 smi_addr;
u32 phy_base;
int direct_phy_access;
enum mt753x_model model;
const char *name;
struct mt753x_port_cfg port5_cfg;
struct mt753x_port_cfg port6_cfg;
int phy_status_poll;
struct mt753x_phy phys[MT753X_NUM_PHYS];
int phy_link_sts;
int irq;
int reset_pin;
struct work_struct irq_worker;
#ifdef CONFIG_SWCONFIG
struct switch_dev swdev;
u32 cpu_port;
#endif
int global_vlan_enable;
struct mt753x_vlan_entry vlan_entries[MT753X_NUM_VLANS];
struct mt753x_port_entry port_entries[MT753X_NUM_PORTS];
int (*mii_read)(struct gsw_mt753x *gsw, int phy, int reg);
void (*mii_write)(struct gsw_mt753x *gsw, int phy, int reg, u16 val);
int (*mmd_read)(struct gsw_mt753x *gsw, int addr, int devad, u16 reg);
void (*mmd_write)(struct gsw_mt753x *gsw, int addr, int devad, u16 reg,
u16 val);
struct list_head list;
};
struct chip_rev {
const char *name;
u32 rev;
};
struct mt753x_sw_id {
enum mt753x_model model;
int (*detect)(struct gsw_mt753x *gsw, struct chip_rev *crev);
int (*init)(struct gsw_mt753x *gsw);
int (*post_init)(struct gsw_mt753x *gsw);
};
extern struct list_head mt753x_devs;
struct gsw_mt753x *mt753x_get_gsw(u32 id);
struct gsw_mt753x *mt753x_get_first_gsw(void);
void mt753x_put_gsw(void);
void mt753x_lock_gsw(void);
u32 mt753x_reg_read(struct gsw_mt753x *gsw, u32 reg);
void mt753x_reg_write(struct gsw_mt753x *gsw, u32 reg, u32 val);
int mt753x_mii_read(struct gsw_mt753x *gsw, int phy, int reg);
void mt753x_mii_write(struct gsw_mt753x *gsw, int phy, int reg, u16 val);
int mt753x_mmd_read(struct gsw_mt753x *gsw, int addr, int devad, u16 reg);
void mt753x_mmd_write(struct gsw_mt753x *gsw, int addr, int devad, u16 reg,
u16 val);
int mt753x_mmd_ind_read(struct gsw_mt753x *gsw, int addr, int devad, u16 reg);
void mt753x_mmd_ind_write(struct gsw_mt753x *gsw, int addr, int devad, u16 reg,
u16 val);
void mt753x_irq_worker(struct work_struct *work);
void mt753x_irq_enable(struct gsw_mt753x *gsw);
/* MDIO Indirect Access Registers */
#define MII_MMD_ACC_CTL_REG 0x0d
#define MMD_CMD_S 14
#define MMD_CMD_M 0xc000
#define MMD_DEVAD_S 0
#define MMD_DEVAD_M 0x1f
/* MMD_CMD: MMD commands */
#define MMD_ADDR 0
#define MMD_DATA 1
#define MII_MMD_ADDR_DATA_REG 0x0e
/* Procedure of MT753x Internal Register Access
*
* 1. Internal Register Address
*
* The MT753x has a 16-bit register address and each register is 32-bit.
* This means the lowest two bits are not used as the register address is
* 4-byte aligned.
*
* Rest of the valid bits are divided into two parts:
* Bit 15..6 is the Page address
* Bit 5..2 is the low address
*
* -------------------------------------------------------------------
* | 15 14 13 12 11 10 9 8 7 6 | 5 4 3 2 | 1 0 |
* |----------------------------------------|---------------|--------|
* | Page Address | Address | Unused |
* -------------------------------------------------------------------
*
* 2. MDIO access timing
*
* The MT753x uses the following MDIO timing for a single register read
*
* Phase 1: Write Page Address
* -------------------------------------------------------------------
* | ST | OP | PHY_ADDR | TYPE | RSVD | TA | RSVD | PAGE_ADDR |
* -------------------------------------------------------------------
* | 01 | 01 | 11111 | 1 | 1111 | xx | 00000 | REG_ADDR[15..6] |
* -------------------------------------------------------------------
*
* Phase 2: Write low Address & Read low word
* -------------------------------------------------------------------
* | ST | OP | PHY_ADDR | TYPE | LOW_ADDR | TA | DATA |
* -------------------------------------------------------------------
* | 01 | 10 | 11111 | 0 | REG_ADDR[5..2] | xx | DATA[15..0] |
* -------------------------------------------------------------------
*
* Phase 3: Read high word
* -------------------------------------------------------------------
* | ST | OP | PHY_ADDR | TYPE | RSVD | TA | DATA |
* -------------------------------------------------------------------
* | 01 | 10 | 11111 | 1 | 0000 | xx | DATA[31..16] |
* -------------------------------------------------------------------
*
* The MT753x uses the following MDIO timing for a single register write
*
* Phase 1: Write Page Address (The same as read)
*
* Phase 2: Write low Address and low word
* -------------------------------------------------------------------
* | ST | OP | PHY_ADDR | TYPE | LOW_ADDR | TA | DATA |
* -------------------------------------------------------------------
* | 01 | 01 | 11111 | 0 | REG_ADDR[5..2] | xx | DATA[15..0] |
* -------------------------------------------------------------------
*
* Phase 3: write high word
* -------------------------------------------------------------------
* | ST | OP | PHY_ADDR | TYPE | RSVD | TA | DATA |
* -------------------------------------------------------------------
* | 01 | 01 | 11111 | 1 | 0000 | xx | DATA[31..16] |
* -------------------------------------------------------------------
*
*/
/* Internal Register Address fields */
#define MT753X_REG_PAGE_ADDR_S 6
#define MT753X_REG_PAGE_ADDR_M 0xffc0
#define MT753X_REG_ADDR_S 2
#define MT753X_REG_ADDR_M 0x3c
#endif /* _MT753X_H_ */
|
