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1 | /* |
2 | * net/dsa/dsa_priv.h - Hardware switch handling |
3 | * Copyright (c) 2008-2009 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 __DSA_PRIV_H |
12 | #define __DSA_PRIV_H |
13 | |
14 | #include <linux/list.h> |
15 | #include <linux/phy.h> |
16 | #include <linux/timer.h> |
17 | #include <linux/workqueue.h> |
18 | #include <net/dsa.h> |
19 | |
20 | struct dsa_switch { |
21 | /* |
22 | * Parent switch tree, and switch index. |
23 | */ |
24 | struct dsa_switch_tree *dst; |
25 | int index; |
26 | |
27 | /* |
28 | * Configuration data for this switch. |
29 | */ |
30 | struct dsa_chip_data *pd; |
31 | |
32 | /* |
33 | * The used switch driver. |
34 | */ |
35 | struct dsa_switch_driver *drv; |
36 | |
37 | /* |
38 | * Reference to mii bus to use. |
39 | */ |
40 | struct mii_bus *master_mii_bus; |
41 | |
42 | /* |
43 | * Slave mii_bus and devices for the individual ports. |
44 | */ |
45 | u32 dsa_port_mask; |
46 | u32 phys_port_mask; |
47 | struct mii_bus *slave_mii_bus; |
48 | struct net_device *ports[DSA_MAX_PORTS]; |
49 | }; |
50 | |
51 | struct dsa_switch_tree { |
52 | /* |
53 | * Configuration data for the platform device that owns |
54 | * this dsa switch tree instance. |
55 | */ |
56 | struct dsa_platform_data *pd; |
57 | |
58 | /* |
59 | * Reference to network device to use, and which tagging |
60 | * protocol to use. |
61 | */ |
62 | struct net_device *master_netdev; |
63 | __be16 tag_protocol; |
64 | |
65 | /* |
66 | * The switch and port to which the CPU is attached. |
67 | */ |
68 | s8 cpu_switch; |
69 | s8 cpu_port; |
70 | |
71 | /* |
72 | * Link state polling. |
73 | */ |
74 | int link_poll_needed; |
75 | struct work_struct link_poll_work; |
76 | struct timer_list link_poll_timer; |
77 | |
78 | /* |
79 | * Data for the individual switch chips. |
80 | */ |
81 | struct dsa_switch *ds[DSA_MAX_SWITCHES]; |
82 | }; |
83 | |
84 | static inline bool dsa_is_cpu_port(struct dsa_switch *ds, int p) |
85 | { |
86 | return !!(ds->index == ds->dst->cpu_switch && p == ds->dst->cpu_port); |
87 | } |
88 | |
89 | static inline u8 dsa_upstream_port(struct dsa_switch *ds) |
90 | { |
91 | struct dsa_switch_tree *dst = ds->dst; |
92 | |
93 | /* |
94 | * If this is the root switch (i.e. the switch that connects |
95 | * to the CPU), return the cpu port number on this switch. |
96 | * Else return the (DSA) port number that connects to the |
97 | * switch that is one hop closer to the cpu. |
98 | */ |
99 | if (dst->cpu_switch == ds->index) |
100 | return dst->cpu_port; |
101 | else |
102 | return ds->pd->rtable[dst->cpu_switch]; |
103 | } |
104 | |
105 | struct dsa_slave_priv { |
106 | /* |
107 | * The linux network interface corresponding to this |
108 | * switch port. |
109 | */ |
110 | struct net_device *dev; |
111 | |
112 | /* |
113 | * Which switch this port is a part of, and the port index |
114 | * for this port. |
115 | */ |
116 | struct dsa_switch *parent; |
117 | u8 port; |
118 | |
119 | /* |
120 | * The phylib phy_device pointer for the PHY connected |
121 | * to this port. |
122 | */ |
123 | struct phy_device *phy; |
124 | }; |
125 | |
126 | struct dsa_switch_driver { |
127 | struct list_head list; |
128 | |
129 | __be16 tag_protocol; |
130 | int priv_size; |
131 | |
132 | /* |
133 | * Probing and setup. |
134 | */ |
135 | char *(*probe)(struct mii_bus *bus, int sw_addr); |
136 | int (*setup)(struct dsa_switch *ds); |
137 | int (*set_addr)(struct dsa_switch *ds, u8 *addr); |
138 | |
139 | /* |
140 | * Access to the switch's PHY registers. |
141 | */ |
142 | int (*phy_read)(struct dsa_switch *ds, int port, int regnum); |
143 | int (*phy_write)(struct dsa_switch *ds, int port, |
144 | int regnum, u16 val); |
145 | |
146 | /* |
147 | * Link state polling and IRQ handling. |
148 | */ |
149 | void (*poll_link)(struct dsa_switch *ds); |
150 | |
151 | /* |
152 | * ethtool hardware statistics. |
153 | */ |
154 | void (*get_strings)(struct dsa_switch *ds, int port, uint8_t *data); |
155 | void (*get_ethtool_stats)(struct dsa_switch *ds, |
156 | int port, uint64_t *data); |
157 | int (*get_sset_count)(struct dsa_switch *ds); |
158 | }; |
159 | |
160 | /* dsa.c */ |
161 | extern char dsa_driver_version[]; |
162 | void register_switch_driver(struct dsa_switch_driver *type); |
163 | void unregister_switch_driver(struct dsa_switch_driver *type); |
164 | |
165 | /* slave.c */ |
166 | void dsa_slave_mii_bus_init(struct dsa_switch *ds); |
167 | struct net_device *dsa_slave_create(struct dsa_switch *ds, |
168 | struct device *parent, |
169 | int port, char *name); |
170 | |
171 | /* tag_dsa.c */ |
172 | netdev_tx_t dsa_xmit(struct sk_buff *skb, struct net_device *dev); |
173 | |
174 | /* tag_edsa.c */ |
175 | netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev); |
176 | |
177 | /* tag_trailer.c */ |
178 | netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev); |
179 | |
180 | |
181 | #endif |
182 |
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