1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
2 /* Copyright (c) 2019-2020 Marvell International Ltd. All rights reserved. */
3
4 #ifndef _PRESTERA_H_
5 #define _PRESTERA_H_
6
7 #include <linux/notifier.h>
8 #include <linux/skbuff.h>
9 #include <linux/workqueue.h>
10 #include <net/devlink.h>
11 #include <uapi/linux/if_ether.h>
12
13 #define PRESTERA_DRV_NAME "prestera"
14
15 #define PRESTERA_DEFAULT_VID 1
16
17 struct prestera_fw_rev {
18 u16 maj;
19 u16 min;
20 u16 sub;
21 };
22
23 struct prestera_port_stats {
24 u64 good_octets_received;
25 u64 bad_octets_received;
26 u64 mac_trans_error;
27 u64 broadcast_frames_received;
28 u64 multicast_frames_received;
29 u64 frames_64_octets;
30 u64 frames_65_to_127_octets;
31 u64 frames_128_to_255_octets;
32 u64 frames_256_to_511_octets;
33 u64 frames_512_to_1023_octets;
34 u64 frames_1024_to_max_octets;
35 u64 excessive_collision;
36 u64 multicast_frames_sent;
37 u64 broadcast_frames_sent;
38 u64 fc_sent;
39 u64 fc_received;
40 u64 buffer_overrun;
41 u64 undersize;
42 u64 fragments;
43 u64 oversize;
44 u64 jabber;
45 u64 rx_error_frame_received;
46 u64 bad_crc;
47 u64 collisions;
48 u64 late_collision;
49 u64 unicast_frames_received;
50 u64 unicast_frames_sent;
51 u64 sent_multiple;
52 u64 sent_deferred;
53 u64 good_octets_sent;
54 };
55
56 struct prestera_port_caps {
57 u64 supp_link_modes;
58 u8 supp_fec;
59 u8 type;
60 u8 transceiver;
61 };
62
63 struct prestera_lag {
64 struct net_device *dev;
65 struct list_head members;
66 u16 member_count;
67 u16 lag_id;
68 };
69
70 struct prestera_flow_block;
71
72 struct prestera_port {
73 struct net_device *dev;
74 struct prestera_switch *sw;
75 struct prestera_flow_block *flow_block;
76 struct devlink_port dl_port;
77 struct list_head lag_member;
78 struct prestera_lag *lag;
79 u32 id;
80 u32 hw_id;
81 u32 dev_id;
82 u16 fp_id;
83 u16 pvid;
84 bool autoneg;
85 u64 adver_link_modes;
86 u8 adver_fec;
87 struct prestera_port_caps caps;
88 struct list_head list;
89 struct list_head vlans_list;
90 struct {
91 struct prestera_port_stats stats;
92 struct delayed_work caching_dw;
93 } cached_hw_stats;
94 };
95
96 struct prestera_device {
97 struct device *dev;
98 u8 __iomem *ctl_regs;
99 u8 __iomem *pp_regs;
100 struct prestera_fw_rev fw_rev;
101 void *priv;
102
103 /* called by device driver to handle received packets */
104 void (*recv_pkt)(struct prestera_device *dev);
105
106 /* called by device driver to pass event up to the higher layer */
107 int (*recv_msg)(struct prestera_device *dev, void *msg, size_t size);
108
109 /* called by higher layer to send request to the firmware */
110 int (*send_req)(struct prestera_device *dev, void *in_msg,
111 size_t in_size, void *out_msg, size_t out_size,
112 unsigned int wait);
113 };
114
115 enum prestera_event_type {
116 PRESTERA_EVENT_TYPE_UNSPEC,
117
118 PRESTERA_EVENT_TYPE_PORT,
119 PRESTERA_EVENT_TYPE_FDB,
120 PRESTERA_EVENT_TYPE_RXTX,
121
122 PRESTERA_EVENT_TYPE_MAX
123 };
124
125 enum prestera_rxtx_event_id {
126 PRESTERA_RXTX_EVENT_UNSPEC,
127 PRESTERA_RXTX_EVENT_RCV_PKT,
128 };
129
130 enum prestera_port_event_id {
131 PRESTERA_PORT_EVENT_UNSPEC,
132 PRESTERA_PORT_EVENT_STATE_CHANGED,
133 };
134
135 struct prestera_port_event {
136 u32 port_id;
137 union {
138 u32 oper_state;
139 } data;
140 };
141
142 enum prestera_fdb_entry_type {
143 PRESTERA_FDB_ENTRY_TYPE_REG_PORT,
144 PRESTERA_FDB_ENTRY_TYPE_LAG,
145 PRESTERA_FDB_ENTRY_TYPE_MAX
146 };
147
148 enum prestera_fdb_event_id {
149 PRESTERA_FDB_EVENT_UNSPEC,
150 PRESTERA_FDB_EVENT_LEARNED,
151 PRESTERA_FDB_EVENT_AGED,
152 };
153
154 struct prestera_fdb_event {
155 enum prestera_fdb_entry_type type;
156 union {
157 u32 port_id;
158 u16 lag_id;
159 } dest;
160 u32 vid;
161 union {
162 u8 mac[ETH_ALEN];
163 } data;
164 };
165
166 struct prestera_event {
167 u16 id;
168 union {
169 struct prestera_port_event port_evt;
170 struct prestera_fdb_event fdb_evt;
171 };
172 };
173
174 struct prestera_switchdev;
175 struct prestera_span;
176 struct prestera_rxtx;
177 struct prestera_trap_data;
178 struct prestera_acl;
179
180 struct prestera_switch {
181 struct prestera_device *dev;
182 struct prestera_switchdev *swdev;
183 struct prestera_rxtx *rxtx;
184 struct prestera_acl *acl;
185 struct prestera_span *span;
186 struct list_head event_handlers;
187 struct notifier_block netdev_nb;
188 struct prestera_trap_data *trap_data;
189 char base_mac[ETH_ALEN];
190 struct list_head port_list;
191 rwlock_t port_list_lock;
192 u32 port_count;
193 u32 mtu_min;
194 u32 mtu_max;
195 u8 id;
196 struct prestera_lag *lags;
197 u8 lag_member_max;
198 u8 lag_max;
199 };
200
201 struct prestera_rxtx_params {
202 bool use_sdma;
203 u32 map_addr;
204 };
205
206 #define prestera_dev(sw) ((sw)->dev->dev)
207
prestera_write(const struct prestera_switch * sw,unsigned int reg,u32 val)208 static inline void prestera_write(const struct prestera_switch *sw,
209 unsigned int reg, u32 val)
210 {
211 writel(val, sw->dev->pp_regs + reg);
212 }
213
prestera_read(const struct prestera_switch * sw,unsigned int reg)214 static inline u32 prestera_read(const struct prestera_switch *sw,
215 unsigned int reg)
216 {
217 return readl(sw->dev->pp_regs + reg);
218 }
219
220 int prestera_device_register(struct prestera_device *dev);
221 void prestera_device_unregister(struct prestera_device *dev);
222
223 struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw,
224 u32 dev_id, u32 hw_id);
225
226 int prestera_port_autoneg_set(struct prestera_port *port, bool enable,
227 u64 adver_link_modes, u8 adver_fec);
228
229 struct prestera_port *prestera_find_port(struct prestera_switch *sw, u32 id);
230
231 struct prestera_port *prestera_port_dev_lower_find(struct net_device *dev);
232
233 int prestera_port_pvid_set(struct prestera_port *port, u16 vid);
234
235 bool prestera_netdev_check(const struct net_device *dev);
236
237 bool prestera_port_is_lag_member(const struct prestera_port *port);
238
239 struct prestera_lag *prestera_lag_by_id(struct prestera_switch *sw, u16 id);
240
241 u16 prestera_port_lag_id(const struct prestera_port *port);
242
243 #endif /* _PRESTERA_H_ */
244
