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 	void *wpriv;
76 };
77 
78 typedef int (*rocker_cmd_prep_cb_t)(const struct rocker_port *rocker_port,
79 				    struct rocker_desc_info *desc_info,
80 				    void *priv);
81 
82 typedef int (*rocker_cmd_proc_cb_t)(const struct rocker_port *rocker_port,
83 				    const struct rocker_desc_info *desc_info,
84 				    void *priv);
85 
86 int rocker_cmd_exec(struct rocker_port *rocker_port, bool nowait,
87 		    rocker_cmd_prep_cb_t prepare, void *prepare_priv,
88 		    rocker_cmd_proc_cb_t process, void *process_priv);
89 
90 int rocker_port_set_learning(struct rocker_port *rocker_port,
91 			     bool learning);
92 
93 struct rocker_world_ops {
94 	const char *kind;
95 	size_t priv_size;
96 	size_t port_priv_size;
97 	u8 mode;
98 	int (*init)(struct rocker *rocker);
99 	void (*fini)(struct rocker *rocker);
100 	int (*port_pre_init)(struct rocker_port *rocker_port);
101 	int (*port_init)(struct rocker_port *rocker_port);
102 	void (*port_fini)(struct rocker_port *rocker_port);
103 	void (*port_post_fini)(struct rocker_port *rocker_port);
104 	int (*port_open)(struct rocker_port *rocker_port);
105 	void (*port_stop)(struct rocker_port *rocker_port);
106 	int (*port_attr_stp_state_set)(struct rocker_port *rocker_port,
107 				       u8 state,
108 				       struct switchdev_trans *trans);
109 	int (*port_attr_bridge_flags_set)(struct rocker_port *rocker_port,
110 					  unsigned long brport_flags,
111 					  struct switchdev_trans *trans);
112 	int (*port_attr_bridge_flags_get)(const struct rocker_port *rocker_port,
113 					  unsigned long *p_brport_flags);
114 	int (*port_attr_bridge_ageing_time_set)(struct rocker_port *rocker_port,
115 						u32 ageing_time,
116 						struct switchdev_trans *trans);
117 	int (*port_obj_vlan_add)(struct rocker_port *rocker_port,
118 				 const struct switchdev_obj_port_vlan *vlan,
119 				 struct switchdev_trans *trans);
120 	int (*port_obj_vlan_del)(struct rocker_port *rocker_port,
121 				 const struct switchdev_obj_port_vlan *vlan);
122 	int (*port_obj_vlan_dump)(const struct rocker_port *rocker_port,
123 				  struct switchdev_obj_port_vlan *vlan,
124 				  switchdev_obj_dump_cb_t *cb);
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 	int (*fib4_add)(struct rocker *rocker,
145 			const struct fib_entry_notifier_info *fen_info);
146 	int (*fib4_del)(struct rocker *rocker,
147 			const struct fib_entry_notifier_info *fen_info);
148 	void (*fib4_abort)(struct rocker *rocker);
149 };
150 
151 extern struct rocker_world_ops rocker_ofdpa_ops;
152 
153 #endif
154