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1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (c) 2018, Sensor-Technik Wiedemann GmbH
3  * Copyright (c) 2018-2019, Vladimir Oltean <[email protected]>
4  */
5 #ifndef _SJA1105_H
6 #define _SJA1105_H
7
8 #include <linux/ptp_clock_kernel.h>
9 #include <linux/timecounter.h>
10 #include <linux/dsa/sja1105.h>
11 #include <linux/dsa/8021q.h>
12 #include <net/dsa.h>
13 #include <linux/mutex.h>
14 #include "sja1105_static_config.h"
15
16 #define SJA1105ET_FDB_BIN_SIZE          4
17 /* The hardware value is in multiples of 10 ms.
18  * The passed parameter is in multiples of 1 ms.
19  */
20 #define SJA1105_AGEING_TIME_MS(ms)      ((ms) / 10)
21 #define SJA1105_NUM_L2_POLICERS         SJA1110_MAX_L2_POLICING_COUNT
22
23 /* Calculated assuming 1Gbps, where the clock has 125 MHz (8 ns period)
24  * To avoid floating point operations, we'll multiply the degrees by 10
25  * to get a "phase" and get 1 decimal point precision.
26  */
27 #define SJA1105_RGMII_DELAY_PS_TO_PHASE(ps) \
28         (((ps) * 360) / 800)
29 #define SJA1105_RGMII_DELAY_PHASE_TO_PS(phase) \
30         ((800 * (phase)) / 360)
31 #define SJA1105_RGMII_DELAY_PHASE_TO_HW(phase) \
32         (((phase) - 738) / 9)
33 #define SJA1105_RGMII_DELAY_PS_TO_HW(ps) \
34         SJA1105_RGMII_DELAY_PHASE_TO_HW(SJA1105_RGMII_DELAY_PS_TO_PHASE(ps))
35
36 /* Valid range in degrees is a value between 73.8 and 101.7
37  * in 0.9 degree increments
38  */
39 #define SJA1105_RGMII_DELAY_MIN_PS \
40         SJA1105_RGMII_DELAY_PHASE_TO_PS(738)
41 #define SJA1105_RGMII_DELAY_MAX_PS \
42         SJA1105_RGMII_DELAY_PHASE_TO_PS(1017)
43
44 typedef enum {
45         SPI_READ = 0,
46         SPI_WRITE = 1,
47 } sja1105_spi_rw_mode_t;
48
49 #include "sja1105_tas.h"
50 #include "sja1105_ptp.h"
51
52 enum sja1105_stats_area {
53         MAC,
54         HL1,
55         HL2,
56         ETHER,
57         __MAX_SJA1105_STATS_AREA,
58 };
59
60 /* Keeps the different addresses between E/T and P/Q/R/S */
61 struct sja1105_regs {
62         u64 device_id;
63         u64 prod_id;
64         u64 status;
65         u64 port_control;
66         u64 rgu;
67         u64 vl_status;
68         u64 config;
69         u64 rmii_pll1;
70         u64 ptppinst;
71         u64 ptppindur;
72         u64 ptp_control;
73         u64 ptpclkval;
74         u64 ptpclkrate;
75         u64 ptpclkcorp;
76         u64 ptpsyncts;
77         u64 ptpschtm;
78         u64 ptpegr_ts[SJA1105_MAX_NUM_PORTS];
79         u64 pad_mii_tx[SJA1105_MAX_NUM_PORTS];
80         u64 pad_mii_rx[SJA1105_MAX_NUM_PORTS];
81         u64 pad_mii_id[SJA1105_MAX_NUM_PORTS];
82         u64 cgu_idiv[SJA1105_MAX_NUM_PORTS];
83         u64 mii_tx_clk[SJA1105_MAX_NUM_PORTS];
84         u64 mii_rx_clk[SJA1105_MAX_NUM_PORTS];
85         u64 mii_ext_tx_clk[SJA1105_MAX_NUM_PORTS];
86         u64 mii_ext_rx_clk[SJA1105_MAX_NUM_PORTS];
87         u64 rgmii_tx_clk[SJA1105_MAX_NUM_PORTS];
88         u64 rmii_ref_clk[SJA1105_MAX_NUM_PORTS];
89         u64 rmii_ext_tx_clk[SJA1105_MAX_NUM_PORTS];
90         u64 stats[__MAX_SJA1105_STATS_AREA][SJA1105_MAX_NUM_PORTS];
91         u64 mdio_100base_tx;
92         u64 mdio_100base_t1;
93         u64 pcs_base[SJA1105_MAX_NUM_PORTS];
94 };
95
96 struct sja1105_mdio_private {
97         struct sja1105_private *priv;
98 };
99
100 enum {
101         SJA1105_SPEED_AUTO,
102         SJA1105_SPEED_10MBPS,
103         SJA1105_SPEED_100MBPS,
104         SJA1105_SPEED_1000MBPS,
105         SJA1105_SPEED_2500MBPS,
106         SJA1105_SPEED_MAX,
107 };
108
109 enum sja1105_internal_phy_t {
110         SJA1105_NO_PHY          = 0,
111         SJA1105_PHY_BASE_TX,
112         SJA1105_PHY_BASE_T1,
113 };
114
115 struct sja1105_info {
116         u64 device_id;
117         /* Needed for distinction between P and R, and between Q and S
118          * (since the parts with/without SGMII share the same
119          * switch core and device_id)
120          */
121         u64 part_no;
122         /* E/T and P/Q/R/S have partial timestamps of different sizes.
123          * They must be reconstructed on both families anyway to get the full
124          * 64-bit values back.
125          */
126         int ptp_ts_bits;
127         /* Also SPI commands are of different sizes to retrieve
128          * the egress timestamps.
129          */
130         int ptpegr_ts_bytes;
131         int num_cbs_shapers;
132         int max_frame_mem;
133         int num_ports;
134         bool multiple_cascade_ports;
135         /* Every {port, TXQ} has its own CBS shaper */
136         bool fixed_cbs_mapping;
137         enum dsa_tag_protocol tag_proto;
138         const struct sja1105_dynamic_table_ops *dyn_ops;
139         const struct sja1105_table_ops *static_ops;
140         const struct sja1105_regs *regs;
141         bool can_limit_mcast_flood;
142         int (*reset_cmd)(struct dsa_switch *ds);
143         int (*setup_rgmii_delay)(const void *ctx, int port);
144         /* Prototypes from include/net/dsa.h */
145         int (*fdb_add_cmd)(struct dsa_switch *ds, int port,
146                            const unsigned char *addr, u16 vid);
147         int (*fdb_del_cmd)(struct dsa_switch *ds, int port,
148                            const unsigned char *addr, u16 vid);
149         void (*ptp_cmd_packing)(u8 *buf, struct sja1105_ptp_cmd *cmd,
150                                 enum packing_op op);
151         bool (*rxtstamp)(struct dsa_switch *ds, int port, struct sk_buff *skb);
152         void (*txtstamp)(struct dsa_switch *ds, int port, struct sk_buff *skb);
153         int (*clocking_setup)(struct sja1105_private *priv);
154         int (*pcs_mdio_read_c45)(struct mii_bus *bus, int phy, int mmd,
155                                  int reg);
156         int (*pcs_mdio_write_c45)(struct mii_bus *bus, int phy, int mmd,
157                                   int reg, u16 val);
158         int (*disable_microcontroller)(struct sja1105_private *priv);
159         const char *name;
160         bool supports_mii[SJA1105_MAX_NUM_PORTS];
161         bool supports_rmii[SJA1105_MAX_NUM_PORTS];
162         bool supports_rgmii[SJA1105_MAX_NUM_PORTS];
163         bool supports_sgmii[SJA1105_MAX_NUM_PORTS];
164         bool supports_2500basex[SJA1105_MAX_NUM_PORTS];
165         enum sja1105_internal_phy_t internal_phy[SJA1105_MAX_NUM_PORTS];
166         const u64 port_speed[SJA1105_SPEED_MAX];
167 };
168
169 enum sja1105_key_type {
170         SJA1105_KEY_BCAST,
171         SJA1105_KEY_TC,
172         SJA1105_KEY_VLAN_UNAWARE_VL,
173         SJA1105_KEY_VLAN_AWARE_VL,
174 };
175
176 struct sja1105_key {
177         enum sja1105_key_type type;
178
179         union {
180                 /* SJA1105_KEY_TC */
181                 struct {
182                         int pcp;
183                 } tc;
184
185                 /* SJA1105_KEY_VLAN_UNAWARE_VL */
186                 /* SJA1105_KEY_VLAN_AWARE_VL */
187                 struct {
188                         u64 dmac;
189                         u16 vid;
190                         u16 pcp;
191                 } vl;
192         };
193 };
194
195 enum sja1105_rule_type {
196         SJA1105_RULE_BCAST_POLICER,
197         SJA1105_RULE_TC_POLICER,
198         SJA1105_RULE_VL,
199 };
200
201 enum sja1105_vl_type {
202         SJA1105_VL_NONCRITICAL,
203         SJA1105_VL_RATE_CONSTRAINED,
204         SJA1105_VL_TIME_TRIGGERED,
205 };
206
207 struct sja1105_rule {
208         struct list_head list;
209         unsigned long cookie;
210         unsigned long port_mask;
211         struct sja1105_key key;
212         enum sja1105_rule_type type;
213
214         /* Action */
215         union {
216                 /* SJA1105_RULE_BCAST_POLICER */
217                 struct {
218                         int sharindx;
219                 } bcast_pol;
220
221                 /* SJA1105_RULE_TC_POLICER */
222                 struct {
223                         int sharindx;
224                 } tc_pol;
225
226                 /* SJA1105_RULE_VL */
227                 struct {
228                         enum sja1105_vl_type type;
229                         unsigned long destports;
230                         int sharindx;
231                         int maxlen;
232                         int ipv;
233                         u64 base_time;
234                         u64 cycle_time;
235                         int num_entries;
236                         struct action_gate_entry *entries;
237                         struct flow_stats stats;
238                 } vl;
239         };
240 };
241
242 struct sja1105_flow_block {
243         struct list_head rules;
244         bool l2_policer_used[SJA1105_NUM_L2_POLICERS];
245         int num_virtual_links;
246 };
247
248 struct sja1105_private {
249         struct sja1105_static_config static_config;
250         int rgmii_rx_delay_ps[SJA1105_MAX_NUM_PORTS];
251         int rgmii_tx_delay_ps[SJA1105_MAX_NUM_PORTS];
252         phy_interface_t phy_mode[SJA1105_MAX_NUM_PORTS];
253         bool fixed_link[SJA1105_MAX_NUM_PORTS];
254         unsigned long ucast_egress_floods;
255         unsigned long bcast_egress_floods;
256         unsigned long hwts_tx_en;
257         unsigned long hwts_rx_en;
258         const struct sja1105_info *info;
259         size_t max_xfer_len;
260         struct spi_device *spidev;
261         struct dsa_switch *ds;
262         u16 bridge_pvid[SJA1105_MAX_NUM_PORTS];
263         u16 tag_8021q_pvid[SJA1105_MAX_NUM_PORTS];
264         struct sja1105_flow_block flow_block;
265         /* Serializes transmission of management frames so that
266          * the switch doesn't confuse them with one another.
267          */
268         struct mutex mgmt_lock;
269         /* Serializes accesses to the FDB */
270         struct mutex fdb_lock;
271         /* PTP two-step TX timestamp ID, and its serialization lock */
272         spinlock_t ts_id_lock;
273         u8 ts_id;
274         /* Serializes access to the dynamic config interface */
275         struct mutex dynamic_config_lock;
276         struct devlink_region **regions;
277         struct sja1105_cbs_entry *cbs;
278         struct mii_bus *mdio_base_t1;
279         struct mii_bus *mdio_base_tx;
280         struct mii_bus *mdio_pcs;
281         struct phylink_pcs *pcs[SJA1105_MAX_NUM_PORTS];
282         struct sja1105_ptp_data ptp_data;
283         struct sja1105_tas_data tas_data;
284 };
285
286 #include "sja1105_dynamic_config.h"
287
288 struct sja1105_spi_message {
289         u64 access;
290         u64 read_count;
291         u64 address;
292 };
293
294 /* From sja1105_main.c */
295 enum sja1105_reset_reason {
296         SJA1105_VLAN_FILTERING = 0,
297         SJA1105_AGEING_TIME,
298         SJA1105_SCHEDULING,
299         SJA1105_BEST_EFFORT_POLICING,
300         SJA1105_VIRTUAL_LINKS,
301 };
302
303 int sja1105_static_config_reload(struct sja1105_private *priv,
304                                  enum sja1105_reset_reason reason);
305 int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
306                            struct netlink_ext_ack *extack);
307 void sja1105_frame_memory_partitioning(struct sja1105_private *priv);
308
309 /* From sja1105_mdio.c */
310 int sja1105_mdiobus_register(struct dsa_switch *ds);
311 void sja1105_mdiobus_unregister(struct dsa_switch *ds);
312 int sja1105_pcs_mdio_read_c45(struct mii_bus *bus, int phy, int mmd, int reg);
313 int sja1105_pcs_mdio_write_c45(struct mii_bus *bus, int phy, int mmd, int reg,
314                                u16 val);
315 int sja1110_pcs_mdio_read_c45(struct mii_bus *bus, int phy, int mmd, int reg);
316 int sja1110_pcs_mdio_write_c45(struct mii_bus *bus, int phy, int mmd, int reg,
317                                u16 val);
318
319 /* From sja1105_devlink.c */
320 int sja1105_devlink_setup(struct dsa_switch *ds);
321 void sja1105_devlink_teardown(struct dsa_switch *ds);
322 int sja1105_devlink_info_get(struct dsa_switch *ds,
323                              struct devlink_info_req *req,
324                              struct netlink_ext_ack *extack);
325
326 /* From sja1105_spi.c */
327 int sja1105_xfer_buf(const struct sja1105_private *priv,
328                      sja1105_spi_rw_mode_t rw, u64 reg_addr,
329                      u8 *buf, size_t len);
330 int sja1105_xfer_u32(const struct sja1105_private *priv,
331                      sja1105_spi_rw_mode_t rw, u64 reg_addr, u32 *value,
332                      struct ptp_system_timestamp *ptp_sts);
333 int sja1105_xfer_u64(const struct sja1105_private *priv,
334                      sja1105_spi_rw_mode_t rw, u64 reg_addr, u64 *value,
335                      struct ptp_system_timestamp *ptp_sts);
336 int static_config_buf_prepare_for_upload(struct sja1105_private *priv,
337                                          void *config_buf, int buf_len);
338 int sja1105_static_config_upload(struct sja1105_private *priv);
339 int sja1105_inhibit_tx(const struct sja1105_private *priv,
340                        unsigned long port_bitmap, bool tx_inhibited);
341
342 extern const struct sja1105_info sja1105e_info;
343 extern const struct sja1105_info sja1105t_info;
344 extern const struct sja1105_info sja1105p_info;
345 extern const struct sja1105_info sja1105q_info;
346 extern const struct sja1105_info sja1105r_info;
347 extern const struct sja1105_info sja1105s_info;
348 extern const struct sja1105_info sja1110a_info;
349 extern const struct sja1105_info sja1110b_info;
350 extern const struct sja1105_info sja1110c_info;
351 extern const struct sja1105_info sja1110d_info;
352
353 /* From sja1105_clocking.c */
354
355 typedef enum {
356         XMII_MAC = 0,
357         XMII_PHY = 1,
358 } sja1105_mii_role_t;
359
360 typedef enum {
361         XMII_MODE_MII           = 0,
362         XMII_MODE_RMII          = 1,
363         XMII_MODE_RGMII         = 2,
364         XMII_MODE_SGMII         = 3,
365 } sja1105_phy_interface_t;
366
367 int sja1105pqrs_setup_rgmii_delay(const void *ctx, int port);
368 int sja1110_setup_rgmii_delay(const void *ctx, int port);
369 int sja1105_clocking_setup_port(struct sja1105_private *priv, int port);
370 int sja1105_clocking_setup(struct sja1105_private *priv);
371 int sja1110_disable_microcontroller(struct sja1105_private *priv);
372
373 /* From sja1105_ethtool.c */
374 void sja1105_get_ethtool_stats(struct dsa_switch *ds, int port, u64 *data);
375 void sja1105_get_strings(struct dsa_switch *ds, int port,
376                          u32 stringset, u8 *data);
377 int sja1105_get_sset_count(struct dsa_switch *ds, int port, int sset);
378
379 /* From sja1105_dynamic_config.c */
380 int sja1105_dynamic_config_read(struct sja1105_private *priv,
381                                 enum sja1105_blk_idx blk_idx,
382                                 int index, void *entry);
383 int sja1105_dynamic_config_write(struct sja1105_private *priv,
384                                  enum sja1105_blk_idx blk_idx,
385                                  int index, void *entry, bool keep);
386
387 enum sja1105_iotag {
388         SJA1105_C_TAG = 0, /* Inner VLAN header */
389         SJA1105_S_TAG = 1, /* Outer VLAN header */
390 };
391
392 enum sja1110_vlan_type {
393         SJA1110_VLAN_INVALID = 0,
394         SJA1110_VLAN_C_TAG = 1, /* Single inner VLAN tag */
395         SJA1110_VLAN_S_TAG = 2, /* Single outer VLAN tag */
396         SJA1110_VLAN_D_TAG = 3, /* Double tagged, use outer tag for lookup */
397 };
398
399 enum sja1110_shaper_type {
400         SJA1110_LEAKY_BUCKET_SHAPER = 0,
401         SJA1110_CBS_SHAPER = 1,
402 };
403
404 u8 sja1105et_fdb_hash(struct sja1105_private *priv, const u8 *addr, u16 vid);
405 int sja1105et_fdb_add(struct dsa_switch *ds, int port,
406                       const unsigned char *addr, u16 vid);
407 int sja1105et_fdb_del(struct dsa_switch *ds, int port,
408                       const unsigned char *addr, u16 vid);
409 int sja1105pqrs_fdb_add(struct dsa_switch *ds, int port,
410                         const unsigned char *addr, u16 vid);
411 int sja1105pqrs_fdb_del(struct dsa_switch *ds, int port,
412                         const unsigned char *addr, u16 vid);
413
414 /* From sja1105_flower.c */
415 int sja1105_cls_flower_del(struct dsa_switch *ds, int port,
416                            struct flow_cls_offload *cls, bool ingress);
417 int sja1105_cls_flower_add(struct dsa_switch *ds, int port,
418                            struct flow_cls_offload *cls, bool ingress);
419 int sja1105_cls_flower_stats(struct dsa_switch *ds, int port,
420                              struct flow_cls_offload *cls, bool ingress);
421 void sja1105_flower_setup(struct dsa_switch *ds);
422 void sja1105_flower_teardown(struct dsa_switch *ds);
423 struct sja1105_rule *sja1105_rule_find(struct sja1105_private *priv,
424                                        unsigned long cookie);
425
426 #endif
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