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 <linux/notifier.h>
19 #include <net/neighbour.h>
20 #include <net/switchdev.h>
21 
22 #include "rocker_hw.h"
23 
24 struct rocker_desc_info {
25 	char *data; /* mapped */
26 	size_t data_size;
27 	size_t tlv_size;
28 	struct rocker_desc *desc;
29 	dma_addr_t mapaddr;
30 };
31 
32 struct rocker_dma_ring_info {
33 	size_t size;
34 	u32 head;
35 	u32 tail;
36 	struct rocker_desc *desc; /* mapped */
37 	dma_addr_t mapaddr;
38 	struct rocker_desc_info *desc_info;
39 	unsigned int type;
40 };
41 
42 struct rocker;
43 
44 struct rocker_port {
45 	struct net_device *dev;
46 	struct rocker *rocker;
47 	void *wpriv;
48 	unsigned int port_number;
49 	u32 pport;
50 	struct napi_struct napi_tx;
51 	struct napi_struct napi_rx;
52 	struct rocker_dma_ring_info tx_ring;
53 	struct rocker_dma_ring_info rx_ring;
54 };
55 
56 struct rocker_port *rocker_port_dev_lower_find(struct net_device *dev,
57 					       struct rocker *rocker);
58 
59 struct rocker_world_ops;
60 
61 struct rocker {
62 	struct pci_dev *pdev;
63 	u8 __iomem *hw_addr;
64 	struct msix_entry *msix_entries;
65 	unsigned int port_count;
66 	struct rocker_port **ports;
67 	struct {
68 		u64 id;
69 	} hw;
70 	spinlock_t cmd_ring_lock;		/* for cmd ring accesses */
71 	struct rocker_dma_ring_info cmd_ring;
72 	struct rocker_dma_ring_info event_ring;
73 	struct notifier_block fib_nb;
74 	struct rocker_world_ops *wops;
75 	struct workqueue_struct *rocker_owq;
76 	void *wpriv;
77 };
78 
79 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
80 				    struct rocker_desc_info *desc_info,
81 				    void *priv);
82 
83 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
84 				    const struct rocker_desc_info *desc_info,
85 				    void *priv);
86 
87 int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait,
88 		    rocker_cmd_prep_cb_t prepare, void *prepare_priv,
89 		    rocker_cmd_proc_cb_t process, void *process_priv);
90 
91 int rocker_port_set_learning(struct rocker_port *rocker_port,
92 			     bool learning);
93 
94 struct rocker_world_ops {
95 	const char *kind;
96 	size_t priv_size;
97 	size_t port_priv_size;
98 	u8 mode;
99 	int (*init)(struct rocker *rocker);
100 	void (*fini)(struct rocker *rocker);
101 	int (*port_pre_init)(struct rocker_port *rocker_port);
102 	int (*port_init)(struct rocker_port *rocker_port);
103 	void (*port_fini)(struct rocker_port *rocker_port);
104 	void (*port_post_fini)(struct rocker_port *rocker_port);
105 	int (*port_open)(struct rocker_port *rocker_port);
106 	void (*port_stop)(struct rocker_port *rocker_port);
107 	int (*port_attr_stp_state_set)(struct rocker_port *rocker_port,
108 				       u8 state,
109 				       struct switchdev_trans *trans);
110 	int (*port_attr_bridge_flags_set)(struct rocker_port *rocker_port,
111 					  unsigned long brport_flags,
112 					  struct switchdev_trans *trans);
113 	int (*port_attr_bridge_flags_get)(const struct rocker_port *rocker_port,
114 					  unsigned long *p_brport_flags);
115 	int (*port_attr_bridge_ageing_time_set)(struct rocker_port *rocker_port,
116 						u32 ageing_time,
117 						struct switchdev_trans *trans);
118 	int (*port_obj_vlan_add)(struct rocker_port *rocker_port,
119 				 const struct switchdev_obj_port_vlan *vlan,
120 				 struct switchdev_trans *trans);
121 	int (*port_obj_vlan_del)(struct rocker_port *rocker_port,
122 				 const struct switchdev_obj_port_vlan *vlan);
123 	int (*port_obj_vlan_dump)(const struct rocker_port *rocker_port,
124 				  struct switchdev_obj_port_vlan *vlan,
125 				  switchdev_obj_dump_cb_t *cb);
126 	int (*port_obj_fdb_add)(struct rocker_port *rocker_port,
127 				const struct switchdev_obj_port_fdb *fdb,
128 				struct switchdev_trans *trans);
129 	int (*port_obj_fdb_del)(struct rocker_port *rocker_port,
130 				const struct switchdev_obj_port_fdb *fdb);
131 	int (*port_obj_fdb_dump)(const struct rocker_port *rocker_port,
132 				 struct switchdev_obj_port_fdb *fdb,
133 				 switchdev_obj_dump_cb_t *cb);
134 	int (*port_master_linked)(struct rocker_port *rocker_port,
135 				  struct net_device *master);
136 	int (*port_master_unlinked)(struct rocker_port *rocker_port,
137 				    struct net_device *master);
138 	int (*port_neigh_update)(struct rocker_port *rocker_port,
139 				 struct neighbour *n);
140 	int (*port_neigh_destroy)(struct rocker_port *rocker_port,
141 				  struct neighbour *n);
142 	int (*port_ev_mac_vlan_seen)(struct rocker_port *rocker_port,
143 				     const unsigned char *addr,
144 				     __be16 vlan_id);
145 	int (*fib4_add)(struct rocker *rocker,
146 			const struct fib_entry_notifier_info *fen_info);
147 	int (*fib4_del)(struct rocker *rocker,
148 			const struct fib_entry_notifier_info *fen_info);
149 	void (*fib4_abort)(struct rocker *rocker);
150 };
151 
152 extern struct rocker_world_ops rocker_ofdpa_ops;
153 
154 #endif
155