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_port {
64 struct net_device *dev;
65 struct prestera_switch *sw;
66 struct devlink_port dl_port;
67 u32 id;
68 u32 hw_id;
69 u32 dev_id;
70 u16 fp_id;
71 u16 pvid;
72 bool autoneg;
73 u64 adver_link_modes;
74 u8 adver_fec;
75 struct prestera_port_caps caps;
76 struct list_head list;
77 struct list_head vlans_list;
78 struct {
79 struct prestera_port_stats stats;
80 struct delayed_work caching_dw;
81 } cached_hw_stats;
82 };
83
84 struct prestera_device {
85 struct device *dev;
86 u8 __iomem *ctl_regs;
87 u8 __iomem *pp_regs;
88 struct prestera_fw_rev fw_rev;
89 void *priv;
90
91 /* called by device driver to handle received packets */
92 void (*recv_pkt)(struct prestera_device *dev);
93
94 /* called by device driver to pass event up to the higher layer */
95 int (*recv_msg)(struct prestera_device *dev, void *msg, size_t size);
96
97 /* called by higher layer to send request to the firmware */
98 int (*send_req)(struct prestera_device *dev, void *in_msg,
99 size_t in_size, void *out_msg, size_t out_size,
100 unsigned int wait);
101 };
102
103 enum prestera_event_type {
104 PRESTERA_EVENT_TYPE_UNSPEC,
105
106 PRESTERA_EVENT_TYPE_PORT,
107 PRESTERA_EVENT_TYPE_FDB,
108 PRESTERA_EVENT_TYPE_RXTX,
109
110 PRESTERA_EVENT_TYPE_MAX
111 };
112
113 enum prestera_rxtx_event_id {
114 PRESTERA_RXTX_EVENT_UNSPEC,
115 PRESTERA_RXTX_EVENT_RCV_PKT,
116 };
117
118 enum prestera_port_event_id {
119 PRESTERA_PORT_EVENT_UNSPEC,
120 PRESTERA_PORT_EVENT_STATE_CHANGED,
121 };
122
123 struct prestera_port_event {
124 u32 port_id;
125 union {
126 u32 oper_state;
127 } data;
128 };
129
130 enum prestera_fdb_event_id {
131 PRESTERA_FDB_EVENT_UNSPEC,
132 PRESTERA_FDB_EVENT_LEARNED,
133 PRESTERA_FDB_EVENT_AGED,
134 };
135
136 struct prestera_fdb_event {
137 u32 port_id;
138 u32 vid;
139 union {
140 u8 mac[ETH_ALEN];
141 } data;
142 };
143
144 struct prestera_event {
145 u16 id;
146 union {
147 struct prestera_port_event port_evt;
148 struct prestera_fdb_event fdb_evt;
149 };
150 };
151
152 struct prestera_switchdev;
153 struct prestera_rxtx;
154
155 struct prestera_switch {
156 struct prestera_device *dev;
157 struct prestera_switchdev *swdev;
158 struct prestera_rxtx *rxtx;
159 struct list_head event_handlers;
160 struct notifier_block netdev_nb;
161 char base_mac[ETH_ALEN];
162 struct list_head port_list;
163 rwlock_t port_list_lock;
164 u32 port_count;
165 u32 mtu_min;
166 u32 mtu_max;
167 u8 id;
168 };
169
170 struct prestera_rxtx_params {
171 bool use_sdma;
172 u32 map_addr;
173 };
174
175 #define prestera_dev(sw) ((sw)->dev->dev)
176
prestera_write(const struct prestera_switch * sw,unsigned int reg,u32 val)177 static inline void prestera_write(const struct prestera_switch *sw,
178 unsigned int reg, u32 val)
179 {
180 writel(val, sw->dev->pp_regs + reg);
181 }
182
prestera_read(const struct prestera_switch * sw,unsigned int reg)183 static inline u32 prestera_read(const struct prestera_switch *sw,
184 unsigned int reg)
185 {
186 return readl(sw->dev->pp_regs + reg);
187 }
188
189 int prestera_device_register(struct prestera_device *dev);
190 void prestera_device_unregister(struct prestera_device *dev);
191
192 struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw,
193 u32 dev_id, u32 hw_id);
194
195 int prestera_port_autoneg_set(struct prestera_port *port, bool enable,
196 u64 adver_link_modes, u8 adver_fec);
197
198 struct prestera_port *prestera_find_port(struct prestera_switch *sw, u32 id);
199
200 struct prestera_port *prestera_port_dev_lower_find(struct net_device *dev);
201
202 int prestera_port_pvid_set(struct prestera_port *port, u16 vid);
203
204 bool prestera_netdev_check(const struct net_device *dev);
205
206 #endif /* _PRESTERA_H_ */
207
