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mv88e6xxx.h
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1 /*
2  * net/dsa/mv88e6xxx.h - Marvell 88e6xxx switch chip support
3  * Copyright (c) 2008 Marvell Semiconductor
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  */
10 
11 #ifndef __MV88E6XXX_H
12 #define __MV88E6XXX_H
13 
14 #define REG_PORT(p) (0x10 + (p))
15 #define REG_GLOBAL 0x1b
16 #define REG_GLOBAL2 0x1c
17 
18 struct mv88e6xxx_priv_state {
19  /*
20  * When using multi-chip addressing, this mutex protects
21  * access to the indirect access registers. (In single-chip
22  * mode, this mutex is effectively useless.)
23  */
24  struct mutex smi_mutex;
25 
26 #ifdef CONFIG_NET_DSA_MV88E6XXX_NEED_PPU
27  /*
28  * Handles automatic disabling and re-enabling of the PHY
29  * polling unit.
30  */
31  struct mutex ppu_mutex;
32  int ppu_disabled;
33  struct work_struct ppu_work;
34  struct timer_list ppu_timer;
35 #endif
36 
37  /*
38  * This mutex serialises access to the statistics unit.
39  * Hold this mutex over snapshot + dump sequences.
40  */
41  struct mutex stats_mutex;
42 
43  int id; /* switch product id */
44 };
45 
46 struct mv88e6xxx_hw_stat {
47  char string[ETH_GSTRING_LEN];
48  int sizeof_stat;
49  int reg;
50 };
51 
52 int __mv88e6xxx_reg_read(struct mii_bus *bus, int sw_addr, int addr, int reg);
53 int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg);
54 int __mv88e6xxx_reg_write(struct mii_bus *bus, int sw_addr, int addr,
55  int reg, u16 val);
56 int mv88e6xxx_reg_write(struct dsa_switch *ds, int addr, int reg, u16 val);
57 int mv88e6xxx_config_prio(struct dsa_switch *ds);
58 int mv88e6xxx_set_addr_direct(struct dsa_switch *ds, u8 *addr);
59 int mv88e6xxx_set_addr_indirect(struct dsa_switch *ds, u8 *addr);
60 int mv88e6xxx_phy_read(struct dsa_switch *ds, int addr, int regnum);
61 int mv88e6xxx_phy_write(struct dsa_switch *ds, int addr, int regnum, u16 val);
62 void mv88e6xxx_ppu_state_init(struct dsa_switch *ds);
63 int mv88e6xxx_phy_read_ppu(struct dsa_switch *ds, int addr, int regnum);
64 int mv88e6xxx_phy_write_ppu(struct dsa_switch *ds, int addr,
65  int regnum, u16 val);
66 void mv88e6xxx_poll_link(struct dsa_switch *ds);
67 void mv88e6xxx_get_strings(struct dsa_switch *ds,
68  int nr_stats, struct mv88e6xxx_hw_stat *stats,
69  int port, uint8_t *data);
70 void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds,
71  int nr_stats, struct mv88e6xxx_hw_stat *stats,
72  int port, uint64_t *data);
73 
74 extern struct dsa_switch_driver mv88e6131_switch_driver;
75 extern struct dsa_switch_driver mv88e6123_61_65_switch_driver;
76 
77 #define REG_READ(addr, reg) \
78  ({ \
79  int __ret; \
80  \
81  __ret = mv88e6xxx_reg_read(ds, addr, reg); \
82  if (__ret < 0) \
83  return __ret; \
84  __ret; \
85  })
86 
87 #define REG_WRITE(addr, reg, val) \
88  ({ \
89  int __ret; \
90  \
91  __ret = mv88e6xxx_reg_write(ds, addr, reg, val); \
92  if (__ret < 0) \
93  return __ret; \
94  })
95 
96 
97 
98 #endif
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