1 /*
2  * drivers/net/ethernet/rocker/rocker.h - Rocker switch device driver
3  * Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com>
4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  */
11 
12 #ifndef _ROCKER_H
13 #define _ROCKER_H
14 
15 #include <linux/kernel.h>
16 #include <linux/types.h>
17 #include <linux/netdevice.h>
18 #include <net/neighbour.h>
19 #include <net/switchdev.h>
20 
21 #include "rocker_hw.h"
22 
23 struct rocker_desc_info {
24 	char *data; /* mapped */
25 	size_t data_size;
26 	size_t tlv_size;
27 	struct rocker_desc *desc;
28 	dma_addr_t mapaddr;
29 };
30 
31 struct rocker_dma_ring_info {
32 	size_t size;
33 	u32 head;
34 	u32 tail;
35 	struct rocker_desc *desc; /* mapped */
36 	dma_addr_t mapaddr;
37 	struct rocker_desc_info *desc_info;
38 	unsigned int type;
39 };
40 
41 struct rocker;
42 
43 struct rocker_port {
44 	struct net_device *dev;
45 	struct rocker *rocker;
46 	void *wpriv;
47 	unsigned int port_number;
48 	u32 pport;
49 	struct napi_struct napi_tx;
50 	struct napi_struct napi_rx;
51 	struct rocker_dma_ring_info tx_ring;
52 	struct rocker_dma_ring_info rx_ring;
53 };
54 
55 struct rocker_world_ops;
56 
57 struct rocker {
58 	struct pci_dev *pdev;
59 	u8 __iomem *hw_addr;
60 	struct msix_entry *msix_entries;
61 	unsigned int port_count;
62 	struct rocker_port **ports;
63 	struct {
64 		u64 id;
65 	} hw;
66 	spinlock_t cmd_ring_lock;		/* for cmd ring accesses */
67 	struct rocker_dma_ring_info cmd_ring;
68 	struct rocker_dma_ring_info event_ring;
69 	struct rocker_world_ops *wops;
70 	void *wpriv;
71 };
72 
73 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
74 				    struct rocker_desc_info *desc_info,
75 				    void *priv);
76 
77 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
78 				    const struct rocker_desc_info *desc_info,
79 				    void *priv);
80 
81 int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait,
82 		    rocker_cmd_prep_cb_t prepare, void *prepare_priv,
83 		    rocker_cmd_proc_cb_t process, void *process_priv);
84 
85 int rocker_port_set_learning(struct rocker_port *rocker_port,
86 			     bool learning);
87 
88 struct rocker_world_ops {
89 	const char *kind;
90 	size_t priv_size;
91 	size_t port_priv_size;
92 	u8 mode;
93 	int (*init)(struct rocker *rocker);
94 	void (*fini)(struct rocker *rocker);
95 	int (*port_pre_init)(struct rocker_port *rocker_port);
96 	int (*port_init)(struct rocker_port *rocker_port);
97 	void (*port_fini)(struct rocker_port *rocker_port);
98 	void (*port_post_fini)(struct rocker_port *rocker_port);
99 	int (*port_open)(struct rocker_port *rocker_port);
100 	void (*port_stop)(struct rocker_port *rocker_port);
101 	int (*port_attr_stp_state_set)(struct rocker_port *rocker_port,
102 				       u8 state,
103 				       struct switchdev_trans *trans);
104 	int (*port_attr_bridge_flags_set)(struct rocker_port *rocker_port,
105 					  unsigned long brport_flags,
106 					  struct switchdev_trans *trans);
107 	int (*port_attr_bridge_flags_get)(const struct rocker_port *rocker_port,
108 					  unsigned long *p_brport_flags);
109 	int (*port_attr_bridge_ageing_time_set)(struct rocker_port *rocker_port,
110 						u32 ageing_time,
111 						struct switchdev_trans *trans);
112 	int (*port_obj_vlan_add)(struct rocker_port *rocker_port,
113 				 const struct switchdev_obj_port_vlan *vlan,
114 				 struct switchdev_trans *trans);
115 	int (*port_obj_vlan_del)(struct rocker_port *rocker_port,
116 				 const struct switchdev_obj_port_vlan *vlan);
117 	int (*port_obj_vlan_dump)(const struct rocker_port *rocker_port,
118 				  struct switchdev_obj_port_vlan *vlan,
119 				  switchdev_obj_dump_cb_t *cb);
120 	int (*port_obj_fib4_add)(struct rocker_port *rocker_port,
121 				 const struct switchdev_obj_ipv4_fib *fib4,
122 				 struct switchdev_trans *trans);
123 	int (*port_obj_fib4_del)(struct rocker_port *rocker_port,
124 				 const struct switchdev_obj_ipv4_fib *fib4);
125 	int (*port_obj_fdb_add)(struct rocker_port *rocker_port,
126 				const struct switchdev_obj_port_fdb *fdb,
127 				struct switchdev_trans *trans);
128 	int (*port_obj_fdb_del)(struct rocker_port *rocker_port,
129 				const struct switchdev_obj_port_fdb *fdb);
130 	int (*port_obj_fdb_dump)(const struct rocker_port *rocker_port,
131 				 struct switchdev_obj_port_fdb *fdb,
132 				 switchdev_obj_dump_cb_t *cb);
133 	int (*port_master_linked)(struct rocker_port *rocker_port,
134 				  struct net_device *master);
135 	int (*port_master_unlinked)(struct rocker_port *rocker_port,
136 				    struct net_device *master);
137 	int (*port_neigh_update)(struct rocker_port *rocker_port,
138 				 struct neighbour *n);
139 	int (*port_neigh_destroy)(struct rocker_port *rocker_port,
140 				  struct neighbour *n);
141 	int (*port_ev_mac_vlan_seen)(struct rocker_port *rocker_port,
142 				     const unsigned char *addr,
143 				     __be16 vlan_id);
144 };
145 
146 extern struct rocker_world_ops rocker_ofdpa_ops;
147 
148 #endif
149